CA2198311C - Compressible tube fluid flow device - Google Patents
Compressible tube fluid flow device Download PDFInfo
- Publication number
- CA2198311C CA2198311C CA 2198311 CA2198311A CA2198311C CA 2198311 C CA2198311 C CA 2198311C CA 2198311 CA2198311 CA 2198311 CA 2198311 A CA2198311 A CA 2198311A CA 2198311 C CA2198311 C CA 2198311C
- Authority
- CA
- Canada
- Prior art keywords
- outer cylinder
- tube
- shaft
- fluid
- roller
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 239000012530 fluid Substances 0.000 title claims abstract description 119
- 230000006835 compression Effects 0.000 claims description 45
- 238000007906 compression Methods 0.000 claims description 45
- 230000002572 peristaltic effect Effects 0.000 abstract description 6
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000005086 pumping Methods 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
Landscapes
- Reciprocating Pumps (AREA)
Abstract
The invention is a compressible tube fluid flow device useful as a peristaltic pump or a motor. A first embodiment includes an outer cylinder, having a first end, a second end and a side wall, and at least one compressible tube arranged helically therein. Each tube includes a flow entrance portion associated with the first end and a flow exit portion associated with the secondend such that the fluid passes through at least one of the ends, preferably generally axially, and not through the side wall. A second embodiment has a multiple of compressible tubes arranged circumferentially within the outer cylinder. Each tube has a first and second end connected to a flow entrance and exit portion respectively, preferably aligned such that the fluid is directed generally axially. Both embodiments include means for compressing the tube and a rotatable shaft drivingly connected thereto.
Description
COMPRESSIBLE TUBE FLUID FLOW DEVICE
IEIELD OF INVENTION
The invention relates to a compressible tube fluid flow device useful as both a pump and a motor. More specifically, the invention relates to a device wherein one or more rollers compress one or more compressible tubes arranged helically or circumferentially within an outer cylinder of the device such that the device may operate as either a motor or a pump.
There are many peristaltic devices, useful as fluid pumps and/or motors, available. Some of these devices utilize single tubes and some utilize multiple tubes.
(conventionally, these devices. transmit the fluid to and from the device perpendicularly relative to a longitudinal axis of a housing or casing of the device, ~~uch that the fluid is transmitted through the housing side wall. This manner of, or mechanism for, fluid transmission may be impractical in confined spaces or other circumstances in which a flow of the fluid to and from the device through the tube in a generally axial direction relative to the longitudinal axis of the housing is desirable or preferable.
Two such conventional devices are described in Canadian Patent No. 320,994 to ~Narner and Canadian Patent No. 2,123,695 to Minarik. Warner describes a peristaltic pump including a single tube helically arranged within an outer cylinder. The inlet and outlet of the tube are oriented perpendicularly to the shaft and the longitudinal axis of the outer cylinder. Minarik describes a multiple tube pump with the tubes arranged circumferentially to the rotating shaft axis. The inlet and outlet of the tube are oriented perpendicularly to the shaft and pass through the side wall of the housing of the pump.
Further, U.S. Patent No. 2,898,624 issued December 27, 1956 to a olsk is directed at a rotary pump containing a first tubing for conducting the fluids through the pump and a second tubing for supporting the first tubing. Both tubings are contained within a hollow cylindrical outer casing. The first tubing is maintained a substantial distance from, and out of direct contact with, the ends of the outer casing and is not permitted to p~~ss out of the outer casing either immediately adjacent to, or ?19331 1 ithrough the ends of the outer casing. Rather, the ends of the first tubing enter and lLeave the casing through i:he side wall of the outer casing and perpendicularly relative ~:o the longitudinal axis of the outer casing.
U.S. Patent No. 3,3!x7,739 issued August 20, 1968 to Miller for a "heat exchange apparatus", U.S. Patent Info. 4,99;x,349 issued March 5, 1991 to Roos for a "peristaltic motor" and U.S. Patent 110. 2,987,004 issued July 29, 1955 to Murrar for a "fluid pressure device" useful as a pump or a motor similarly disclose devices in which the ends of the compressible tubes pass through the side wall of the pump housing and perpendicularly relative to the longitudinal axis of the housing.
Thus, there is a need in the industry for a compressible tube fluid flow device, useful as a pump or a motor, which may be used in confined spaces. Further, there is a need for a device which permits or directs the fluid to pass through one or both of the Ends of the housing or casing of the device and not through the side wall of the housing. As well, there is a need for a device which permits the flow of the fluid into and/or out of the device i~:n a generally axial direction relative to the longitudinal axis of the housing.
SUMMARY OF INVENTION
The invention relai:es to a compressible tube fluid flow device or peristaltic device useful as a pump or a motor. The device may be relatively compact as compared to conventional devices such that the device may be useful in confined ;paces. Further, the invention relates to an embodiment of the device which permits or directs the fluid to pass through one or both of the ends of an outer cylinder of the device and not through a side wall of the outer cylinder. As well, the invention relates to a device which preferably permits or directs the flow of the fluid into and/or out of the device through a connpressible tube in a generally axial direction relative to a longitudinal axis of the outer cylinder.
Specifically, a first embod.irnent of the invention is comprised of a device which includes one or more tubes arranged helically within an outer cylinder having a first end, a second end, a side wall and a longitudinal axis extending therethrough.
In this first embodiment, a flow entrance portion at one end of each tube is associated with the first end of the outer cylinder, and a flow exit portion at the other end of each tube is associated with the second end of the outer cylinder. Preferably, the association is 219~31i such that at least one of the flc,~w entrance and exit portions, and preferably both, permits or directs the fluid to pass out of the tube through its respective end of the outer cylinder and not through the side wall. Further, the association is preferably such that fluid passes into and/or out of the tube through the flow entrance and exit portions in a generally axial direction relative to the longitudinal axis of the outer cylinder. Thus, the flow entrance and exit portions are preferably aligned in a ~~enerally axial direction.
Further, the flow entrance and exit portions may be associated with at least one of a first end surface and. second end surface respectively such that the fluid passes i:hrough the respective end surface. Preferably, the association is such that the flow entrance portion passes through the first end surface and the flow exit portion passes through the second end surface. The first and second end surfaces may be comprised of a bearing, seal, gasket or any other suitable end surface permitting the passage of the tube therethrough.
A second embodiment of the invention is comprised of a device which includes one or more tubes arranged circumferentially within an outer cylinder having a longitudinal axis extending therethrough. In this second embodiment, a flow entrance portion, associated with the outer cylinder, is connected to one end of the tubes for directing the fluid into the tubes and a flow exit portion, associated with the outer cylinder, is connected to the other ends of the tubes for directing the fluid out of the tubes. Preferably the fluid passes into and out of the tube through the flow entrance and exit portions in a generally axial direction relative to the longitudinal axis of the outer cylinder.
More particularly; the first embodiment of the invention comprises a compressible tube fluid flc>w device comprising:
(a) an outer cylinder having a first end, a second end, a side wall and a longitudinal axis extending therethrough;
(b) at least one compressible tube, for containing the fluid, arranged helically within the outer cylinder, wherein the tube has a flow entrance portion associated with the first end of the outer cylinder and a flow exit portion associated with the second end of the outer cylinder and wherein at least one of the flow entrance and exit portions is associated with its respective 21v~5i 1 end such that the fluid passes out of the tube through the end of the outer cylinder and not through the wall;
(c) means, contained within the outer cylinder, for compressing the tube to form at least one location of compression, wherein the location of compression is moveable along the length of the tube; and (d) a rotatable shaft, having an axis of rotation, drivingly connected to the compressing means.
In the preferred first embodiment, the flow entrance portion is associated with i:he first end of the outer cylinder such that the fluid passes into the tube through the first end and not through the wall and the flow exit portion is associated with the ~~econd end of the outer cylinder such that the fluid passes out of the tube through the ~~econd end and not through the wall. As well, the fluid preferably passes into and out of the outer cylinder in a generally axial direction relative to the longitudinal axis of the outer cylinder. Further, although any number of compressible tubes may be used in the device, the device is preferably comprised of two or more. or a multiple, of the compressible tubes.
The compressing means may be comprised of any conventional structure, device or mechanism capable of compressing the tube to form at least one location of compression, which location of compression is moveable along the length of the tube.
However, in the preferred first embodiment, the compressing means is comprised of at least one roller drivingly connected to the shaft. Preferably, the device includes two or more, or a multiple, of thE~ rollers. Each roller may have a longitudinal axis extending therethrough and may be~ rotatably mounted to the shaft such that the longitudinal axis of the roller is substantially parallel to the axis of rotation of the shaft.
Further, in the preferred first embodiment, the tube is arranged within the outer cylinder such that the tube is compressed between the roller and the side wall of the outer cylinder. However, the tube may alternately be arranged within the outer cylinder such that the tube may be compressed between the roller and the shaft.
Further, the shaft and the roller are preferably removable from the outer cylinder.
Where the device is used as a motor, the flow entrance portion of the tube may be associated with a supply of pressurized fluid such that the pressurized fluid at the x'.198:51 i flow entrance portion acts at the location of compression to cause the roller to move.
'The roller is then drivingly connected to the shaft such that the movement of the Droller drives the shaft to cause the shaft to rotate. Where the device is used as a pump, ~'.he flow entrance portion of the tube may be associated with a supply of fluid. The roller is then drivingly connected to the shaft such that rotation of the shaft drives the roller and moves the location of compression along the tube so that the fluid is drawn into the flow entrance portion and expelled out of the flow exit portion.
In a first aspect of a second embodiment of the invention, the invention comprises a compressible tube fluid flow device comprising an outer cylinder containing a multiple of compressible tubes in contact with a means for compressing t:he tubes that is operably connected to a rotatably mounted shaft with said tubes being arranged circumferentially within said outer cylinder and having one end of each said compressible tube connected to a flow entrance portion associated with the outer cylinder and the other end of each said compressible tube connected to a flow exit portion associated with the outer cylinder.
In this first aspect of the second embodiment of the invention, the flow entrance and exit portions are preferably oriented generally axially. Further, the means for compressing may be comprised of a multiple of rollers.
In a second aspect of the second embodiment of the invention, the invention comprises a compressible tube fluid flow device comprising:
(a) an outer cylinder having a first end, a second end and a longitudinal axis extending therethrough;
(b) a multiple of compressible tubes, for containing the fluid, arranged circumferentially within the outer cylinder, wherein each tube has a first end and a second end;
(c) means, contained within the outer cylinder, for compressing the tubes to form at least one location of compression in each tube, wherein the location of compression is moveable along the length of each tube;
(d) a rotatable shaft, having an axis of rotation, drivingly connected to the compressing means;
IEIELD OF INVENTION
The invention relates to a compressible tube fluid flow device useful as both a pump and a motor. More specifically, the invention relates to a device wherein one or more rollers compress one or more compressible tubes arranged helically or circumferentially within an outer cylinder of the device such that the device may operate as either a motor or a pump.
There are many peristaltic devices, useful as fluid pumps and/or motors, available. Some of these devices utilize single tubes and some utilize multiple tubes.
(conventionally, these devices. transmit the fluid to and from the device perpendicularly relative to a longitudinal axis of a housing or casing of the device, ~~uch that the fluid is transmitted through the housing side wall. This manner of, or mechanism for, fluid transmission may be impractical in confined spaces or other circumstances in which a flow of the fluid to and from the device through the tube in a generally axial direction relative to the longitudinal axis of the housing is desirable or preferable.
Two such conventional devices are described in Canadian Patent No. 320,994 to ~Narner and Canadian Patent No. 2,123,695 to Minarik. Warner describes a peristaltic pump including a single tube helically arranged within an outer cylinder. The inlet and outlet of the tube are oriented perpendicularly to the shaft and the longitudinal axis of the outer cylinder. Minarik describes a multiple tube pump with the tubes arranged circumferentially to the rotating shaft axis. The inlet and outlet of the tube are oriented perpendicularly to the shaft and pass through the side wall of the housing of the pump.
Further, U.S. Patent No. 2,898,624 issued December 27, 1956 to a olsk is directed at a rotary pump containing a first tubing for conducting the fluids through the pump and a second tubing for supporting the first tubing. Both tubings are contained within a hollow cylindrical outer casing. The first tubing is maintained a substantial distance from, and out of direct contact with, the ends of the outer casing and is not permitted to p~~ss out of the outer casing either immediately adjacent to, or ?19331 1 ithrough the ends of the outer casing. Rather, the ends of the first tubing enter and lLeave the casing through i:he side wall of the outer casing and perpendicularly relative ~:o the longitudinal axis of the outer casing.
U.S. Patent No. 3,3!x7,739 issued August 20, 1968 to Miller for a "heat exchange apparatus", U.S. Patent Info. 4,99;x,349 issued March 5, 1991 to Roos for a "peristaltic motor" and U.S. Patent 110. 2,987,004 issued July 29, 1955 to Murrar for a "fluid pressure device" useful as a pump or a motor similarly disclose devices in which the ends of the compressible tubes pass through the side wall of the pump housing and perpendicularly relative to the longitudinal axis of the housing.
Thus, there is a need in the industry for a compressible tube fluid flow device, useful as a pump or a motor, which may be used in confined spaces. Further, there is a need for a device which permits or directs the fluid to pass through one or both of the Ends of the housing or casing of the device and not through the side wall of the housing. As well, there is a need for a device which permits the flow of the fluid into and/or out of the device i~:n a generally axial direction relative to the longitudinal axis of the housing.
SUMMARY OF INVENTION
The invention relai:es to a compressible tube fluid flow device or peristaltic device useful as a pump or a motor. The device may be relatively compact as compared to conventional devices such that the device may be useful in confined ;paces. Further, the invention relates to an embodiment of the device which permits or directs the fluid to pass through one or both of the ends of an outer cylinder of the device and not through a side wall of the outer cylinder. As well, the invention relates to a device which preferably permits or directs the flow of the fluid into and/or out of the device through a connpressible tube in a generally axial direction relative to a longitudinal axis of the outer cylinder.
Specifically, a first embod.irnent of the invention is comprised of a device which includes one or more tubes arranged helically within an outer cylinder having a first end, a second end, a side wall and a longitudinal axis extending therethrough.
In this first embodiment, a flow entrance portion at one end of each tube is associated with the first end of the outer cylinder, and a flow exit portion at the other end of each tube is associated with the second end of the outer cylinder. Preferably, the association is 219~31i such that at least one of the flc,~w entrance and exit portions, and preferably both, permits or directs the fluid to pass out of the tube through its respective end of the outer cylinder and not through the side wall. Further, the association is preferably such that fluid passes into and/or out of the tube through the flow entrance and exit portions in a generally axial direction relative to the longitudinal axis of the outer cylinder. Thus, the flow entrance and exit portions are preferably aligned in a ~~enerally axial direction.
Further, the flow entrance and exit portions may be associated with at least one of a first end surface and. second end surface respectively such that the fluid passes i:hrough the respective end surface. Preferably, the association is such that the flow entrance portion passes through the first end surface and the flow exit portion passes through the second end surface. The first and second end surfaces may be comprised of a bearing, seal, gasket or any other suitable end surface permitting the passage of the tube therethrough.
A second embodiment of the invention is comprised of a device which includes one or more tubes arranged circumferentially within an outer cylinder having a longitudinal axis extending therethrough. In this second embodiment, a flow entrance portion, associated with the outer cylinder, is connected to one end of the tubes for directing the fluid into the tubes and a flow exit portion, associated with the outer cylinder, is connected to the other ends of the tubes for directing the fluid out of the tubes. Preferably the fluid passes into and out of the tube through the flow entrance and exit portions in a generally axial direction relative to the longitudinal axis of the outer cylinder.
More particularly; the first embodiment of the invention comprises a compressible tube fluid flc>w device comprising:
(a) an outer cylinder having a first end, a second end, a side wall and a longitudinal axis extending therethrough;
(b) at least one compressible tube, for containing the fluid, arranged helically within the outer cylinder, wherein the tube has a flow entrance portion associated with the first end of the outer cylinder and a flow exit portion associated with the second end of the outer cylinder and wherein at least one of the flow entrance and exit portions is associated with its respective 21v~5i 1 end such that the fluid passes out of the tube through the end of the outer cylinder and not through the wall;
(c) means, contained within the outer cylinder, for compressing the tube to form at least one location of compression, wherein the location of compression is moveable along the length of the tube; and (d) a rotatable shaft, having an axis of rotation, drivingly connected to the compressing means.
In the preferred first embodiment, the flow entrance portion is associated with i:he first end of the outer cylinder such that the fluid passes into the tube through the first end and not through the wall and the flow exit portion is associated with the ~~econd end of the outer cylinder such that the fluid passes out of the tube through the ~~econd end and not through the wall. As well, the fluid preferably passes into and out of the outer cylinder in a generally axial direction relative to the longitudinal axis of the outer cylinder. Further, although any number of compressible tubes may be used in the device, the device is preferably comprised of two or more. or a multiple, of the compressible tubes.
The compressing means may be comprised of any conventional structure, device or mechanism capable of compressing the tube to form at least one location of compression, which location of compression is moveable along the length of the tube.
However, in the preferred first embodiment, the compressing means is comprised of at least one roller drivingly connected to the shaft. Preferably, the device includes two or more, or a multiple, of thE~ rollers. Each roller may have a longitudinal axis extending therethrough and may be~ rotatably mounted to the shaft such that the longitudinal axis of the roller is substantially parallel to the axis of rotation of the shaft.
Further, in the preferred first embodiment, the tube is arranged within the outer cylinder such that the tube is compressed between the roller and the side wall of the outer cylinder. However, the tube may alternately be arranged within the outer cylinder such that the tube may be compressed between the roller and the shaft.
Further, the shaft and the roller are preferably removable from the outer cylinder.
Where the device is used as a motor, the flow entrance portion of the tube may be associated with a supply of pressurized fluid such that the pressurized fluid at the x'.198:51 i flow entrance portion acts at the location of compression to cause the roller to move.
'The roller is then drivingly connected to the shaft such that the movement of the Droller drives the shaft to cause the shaft to rotate. Where the device is used as a pump, ~'.he flow entrance portion of the tube may be associated with a supply of fluid. The roller is then drivingly connected to the shaft such that rotation of the shaft drives the roller and moves the location of compression along the tube so that the fluid is drawn into the flow entrance portion and expelled out of the flow exit portion.
In a first aspect of a second embodiment of the invention, the invention comprises a compressible tube fluid flow device comprising an outer cylinder containing a multiple of compressible tubes in contact with a means for compressing t:he tubes that is operably connected to a rotatably mounted shaft with said tubes being arranged circumferentially within said outer cylinder and having one end of each said compressible tube connected to a flow entrance portion associated with the outer cylinder and the other end of each said compressible tube connected to a flow exit portion associated with the outer cylinder.
In this first aspect of the second embodiment of the invention, the flow entrance and exit portions are preferably oriented generally axially. Further, the means for compressing may be comprised of a multiple of rollers.
In a second aspect of the second embodiment of the invention, the invention comprises a compressible tube fluid flow device comprising:
(a) an outer cylinder having a first end, a second end and a longitudinal axis extending therethrough;
(b) a multiple of compressible tubes, for containing the fluid, arranged circumferentially within the outer cylinder, wherein each tube has a first end and a second end;
(c) means, contained within the outer cylinder, for compressing the tubes to form at least one location of compression in each tube, wherein the location of compression is moveable along the length of each tube;
(d) a rotatable shaft, having an axis of rotation, drivingly connected to the compressing means;
21 i~831 1 (e) a flow entrance portion associated with the outer cylinder and connected to the first ends of the tubes for directing the fluid into the tubes; and (f) a flow exit portion associated with the outer cylinder and connected to the second ends of the tubes for directing the fluid out of the tubes.
In the second aspect of tile second embodiment, the flow exit and entrance portions are aligned such that the fluid is directed into and out of the tubes in a generally axial direction relative to the longitudinal axis of the outer cylinder. Further, each of the flow entrance and exit portions defines a longitudinal axis and the longitudinal axes are preferably substantially parallel to the axis of rotation of the shaft.
In the preferred second embodiment, the compressing means may be comprised of any conventional structure, mechanism, device or apparatus suitable for, and capable of, compressing the tubes to form at least one location of compression in each tube, which location is moveable along the length of each tube. However, in the preferred second embodiment, the compressing means is comprised of at least one roller drivingly connected to the shaft. Preferably, the device is comprised of two or more, or a multiple, of rollers. Further, each roller may have a longitudinal axis extending therethrough and may be rotatably mounted to the shaft such that the longitudinal axis is substantially parallel to the axis of rotation of the shaft.
Further, in the preferred second embodiment, the tube is arranged within the outer cylinder such that the tube is compressed between the roller and the outer cylinder. However, alternately, the tube may be arranged within the outer cylinder ~;uch that the tube is compressed between the roller and the shaft. Further, the shaft and the roller may be removable from the outer cylinder.
When using the second embodiment of the invention as a motor, the entrance cavity is preferably associated with a supply of pressurized fluid such that the pressurized fluid enters the entrance cavity and acts at the location of compression to cause the roller to move. The roller is drivingly connected to the shaft such that the movement of the roller drives the shaft to cause the shaft to rotate. When using the ~,econd embodiment of the invention as a pump, the entrance cavity is preferably associated with a supply of fluid. The roller is drivingly connected to the shaft such that rotation of the shaft drives the roller and moves the location of compression ;long the tubes so that the fluid is drawn into the entrance cavity and expelled out of ithe exit cavity.
SUMMARY OF DRAWII'dGS
Embodiments of the invention will now be described with reference to the <~ccompanying drawings, i.n which:
Figure 1 is a side view of a first embodiment of the device shown in partial ;section and showing the u.se of one compressible tube therein;
Figure 2 is a second end view of the first embodiment of the device shown in higure 1;
Figure 3 is a first end view of the first embodiment of the device shown in higure 1;
Figure 4 is a cross-section of the first embodiment of the device taken along line ~E-4 of Figure 1;
Figure 5 is the side view of the first embodiment shown in Figure 1, in partial ~;ection showing the helical arrangement of the compressible tube;
Figure 6 is a side view of the first embodiment of the device shown in partial ~;ection and showing the use of multiple compressible tubes therein;
Figure 7 is a second end view of the first embodiment of the device shown in Figure 6;
Figure 8 is a first .end view of the first embodiment of the device shown in Figure 6;
Figure 9 is a cross-section of the first embodiment of the device taken along line ~~-9 of Figure 6;
Figure 10 is the side view of the first embodiment of the device shown in Figure E>, in partial section showing the helical arrangement of the compressible tubes;
Figure 11 is the side view of the first embodiment of the device shown in Figure n, in partial section and showing the absence of bearings at the ends of the outer ~~ylinder of the device;
Figure 12 is a second end view of the first embodiment of the device shown in :Figure 11;
Figure 13 is a first end view of the first embodiment of the device shown in JFigure 11;
Figure 14 is a side view of a second embodiment of the device shown in partial :section;
Figure 15 is a cross-section of the second embodiment of the device taken along line 15-15 of Figure 14;
Figure 16 is a second end view of the second embodiment of the device shown in Figure 14; and Figure 17 is a first end view of the second embodiment of the device shown in Figure 14.
DETAILED DESCRIPTIOI\f The within invention is comprised of a device (10) which may be used as either a motor or a pump, as described further below. As the device (10) is designed to be relatively compact, the cLevice (10) is particularly useful in confined spaces. For instance, the device (10) is particularly useful in the production of oil from an underground well bore such that the device (10) is located downhole within the well bore.
Referring to Figures 1 through 13, in a first embodiment of the device (10), the device (10) is comprised of an outer cylinder (12), a first end (16), a second end (18) and a side wall (19). Further, the outer cylinder (12) has a longitudinal axis extending therethrough defined by a line extending centrally through the outer cylinder (12) between the first and second ends (16, 18). As well, in the preferred first embodiment, _g_ the first end (16) i.s associated with a first end surface (20) while the second end (18) is associated with a second end surface (22).
However, the outer cylinder (12) need nor include the end surfaces (20,22) such that the ends (16,18) of the outer cylinder (12) are open. Any hollow enclosure and any shape of such enclosure suitable for, and compatible' with, the intended use of the device may be used. However, preferably the outer cylinder (12) is cylindrical in shape.
In the first embodiment, the device (10) is further comprised of at least one compressible tube (24) for containing the fluid.
However, preferably, a multiple of the compressible tubes (24), being two or more, as shown in Figures 6 through 13, comprises the device (10) in order to permit higher rates of flow of fluid through the device ( 10 ) . Each tube ( 24 ) may be comprised of any material compatible with the: particular use of the tube (24) as described herein. Specifically, the tube (24) must be compressible, to permit compression of the tube (24), and resilient in order to permit the tube (24) to rebound or return to its original form following its compression. Further, the tube (24) must be comprised of a material which is compatible with the type of fluid contained therein, as well as capable of withstanding the pressure of the fluid contained therein.
In the first embodiment, the compressible tube (24) is arranged helically within th~=_ outer cylinder (12). Preferably, as described further below, the tube (24) is in contact with an inner surface (14) of the side wall (19) of the outer cylinder (12). The tube (24) preferably extends ;substantially between the first and second ends (16, 18) of the outer cylinder (12) cylinder (12), but may terminate a spaced distance from the faces of ends (16, 18) within the outer cylinder (12) such that the tube (24) is not located at or adjacent each of the ends (1G, 18) of the outer cylinder (12).
Further , the tube (:?4) is comprised of a flow entrance portion (26) and a flow exit portion (28). Each of these portions (26, 28) is located at an opposing end of the tube immediately adjacent the end of the tube. ThE: flow entrance and exit portions (26, 28) may be of any desired length.
At least one of. the flow entrance and exit portions (26, 28) is preferably associated with its respective end (16, 18) such that the fluid passes through the end (16, 18) of the outer cylinder (12) and not through the side wall (19). For instance, the flow entrance portion (26) may be associated with the first end (16) of the outer cylinder (12) such t=hat the fluid passes into the tube (24) through the f first end ( 16 ) . Simi larly, the f low exit portion ( 28 ) may be associated with the second end (18) of the outer cylinder (12) such that the fluid passes out of the tube (24) through the second end (18). In the preferred first embodiment, both the flow entrance and exit portions (26, 28) a.re associated in this manner with their respective ends (16, 18). More particularly, the flow entrance and exit portions (26, a?8) are preferably aligned in the outer cylinder (12) such that the portions (26, 28) are generally parallel to the longitudinal axis o:E the outer cylinder (12).
In the preferred embodiment, each of the flow entrance and exit portions (26, 28) is located at or adjacent its respective end (16, 18), which ends constitute the exposed end faces of the outer cylinder (12); i.e. the end portions of the tubes themselves pass through these end faces. Thus, the fluid flows into the device (10) directly into the f7.ow entrance portion (26) and flows out of the flow exit portion (28) directly out of the device (10).
Alternately, as indicated above, the flow entrance and exit portions (26, 28) may be a spaced distance from their respective ends (16, 18) within the side wall (19) of the outer cylinder (12).
In this case, the f=Luid flows through the first end (16) of the outer cylinder and is directed by the side wall (19) into the flow entrance portion (26) of the tube (24). Similarly, fluid flows out of the flow exit portion (28) and is directed out of the outer cylinder (12) by the side wall (19).
In the preferred first embodiment, in which the outer cylinder (12) includes the first a.nd second end surfaces (20, 22), the end surfaces (20, 22) a:re associated with the respective ends (16, 18) in a manner compat_Lble with the intended function of the device (10) as described he=_rein and in a manner permitting the passage of l0 the fluid into and out of the ends (16, 18). The end surfaces (20, 22) may be located within the side wall (19) of the outer cylinder (12) a spaced distance from the ends (16, 18) . However, preferably, the end surfaces (20, 2.2) are located at or adjacent to the respective ends (16, 18) of the outer cylinder (12). Further, the flow entrance and exit portions (26, 28) of the tube (24) preferably pass through t:he end surfaces (20, 22) in a generally axial direction re7_ative to the longitudinal axis of the outer cylinder (12) . Where desiz-able, a suitable end surface (20, 22) may be chosen that inhibits or minimizes the flow of fluid into the outer cylinder (12), at either of the ends 916, 18) of the outer cylinder (12), other than through the tube (24). For instance, the second end surface (22) preferably provides a seal about the tube (24) such that the fluid is inhibited from flowing out of the flow exit portion (28) and back towards the first end (16) within the outer cylinder (12).
10~, -. 298311 The end surfaces (20, 22) may be comprised of any structure, device or apparatus .capable of providing an end surface for the outer cylinder (12) which permits the passage of the fluid therethrough,, such as suitable bearings, seals or gaskets. However, in the preferred first embodiment, the first and second end surfaces (20, 22) are ~~omprised of bearings (32) as described below.
The first embodiment of the device (10) is Further comprised of means for compressing the tube (24) and a rotatable shaft (30). The rotatable shaft (30) is at least ~~artially contained within the outer cylinder (12) and has an axis of rotation.
lPreferably, the axis of rot~~tion of the shaft (30) is aligned such that it extends through i:he first and second ends (16, 18), and thus, the end surfaces (20, 22). The shaft (30) itself need not extend through the ends (16, 18), however, in the preferred embodiment, the shaft (30) does extend through at least one of the first and second ends (16, 18).
As indicated, the shaft (30) is rotatably mounted within the device (10), and is preferably rotatably mounted to the outer cylinder (12). Further, the shaft (30) is preferably centrally located within the outer cylinder (12) in that it passes approximately through tree centre of the outer cylinder (12). The shaft (30) may be rotatably mounted within. the outer cylinder (12) in any suitable manner permitting the rotation of the shaft (~30) within the outer cylinder (12) and permitting the fluid to pass through the ends (16, 18). For instance, the shaft (30) may be rotatably mounted by the bearings, gaskets or seals comprising the end surfaces (20, 22).
In the preferred embodiment, the shaft (30) is rotatably mounted to the inner wall (14) of the outer cylinder (12) by one or more bearings (32) located adjacent each of the first and second ends (16, 18) of the outer cylinder (12). In this case, the bearings (32) comprise the end surfaces (20, 22) of the outer cylinder (12). In order that the flow Entrance and exit portions (26, 28) may pass through the first and second end surfaces (20, 22) respectively, the bearings (32) at each end (16, 18) define one or more openings (34). An opening (34) wiil be defined in the bearings (32) at the first end (16) of the outer cylinder (12) for each flow entrance portion (26) of each tube (24) passing through the first end surface (20). 'similarly, an opening (34) will be defined by the bearings (32) at the second end (18) of the outer cylinder (12) for the flow exit portion (28) of each tube (24) passing through. the second end surface (22). Accordingly, the number of tubes (24) that may be contained within the outer cylinder (12) may be limited by the manner in which the entrance and exit portions (26, 28) are permitted to pass through 219831 ~
the bearings (32). For in stance, an excessive number of openings (34) in the bearings (32) located at either of the first or second ends (16, 18) may weaken the structure of the ~~evice (10) or inadequately support the shaft (30) within the outer cylinder (12).
The shaft (30) is drivingly connected to the compressing means of the device ~;10). Due to this connection, during use of the device (30) as a pump, rotation of the shaft (30) operates the compressing means to cause the compressing means to move rthe fluid through the tube (24), as described further below. When using the device (10) ;~s a motor, as a result of the connection, operation of the compressing means causes rotation of the shaft (30), as described further below.
The means for compressing the tube (24) are preferably contained within the outer cylinder (12). The compressing means compress the tube (24) to form at least one location of compression along th.e tube (12). Further, the location of compression is movable along the leng-th of the tube (24). The compressing means preferably ;substantially collapse the tube (24) at the location of compression such that fluid in the i:ube (24) would tend not to pass through the location of compression. As a result, ~Nhen the location of compression moves along the length of the tube (24), a peristaltic action results in which tile fluid. in front of each location of compression is forced i:hrough the tube (24).
The compressing means :may be comprised of any conventional structure, device, mechanism or apparatus capable of, and suitable for, compressing the tube (24) in the manner described herein. The compressing means may move in any manner or direction which causes the location of compression to move along the tube (24). For instance, the compressing means may move substantially circumferentially within the outer cylinder (12), longitlzdinally within the outer cylinder (12) or in a combination of these movements. However, in the preferred first embodiment, the compressing means is comprised of at least one roller (36) movable substantially circumferentially within the outer cylinder y12) and drivingly connected to the shaft (30). Any shape or ~;ize of roller (36) suitable for, and compatible with, performing the function of the roller (36) as described herein may be used. However, the roller (36) is preferably ~;ubstantially circular on cross-section. Further, the roller (36) has a longitudinal axis extending therethrough such that the roller (36) rotates about its longitudinal axis. In the preferred first embodiment, t:he roller (36) is rotatably mounted to the shaft (30) ~;uch that its longitudinal axis is ~>referably substantially parallel to the axis of rotation of the shaft (30).
L1983ii Further, the diameter of the roller (36) is preferably such that the roller (36) extends between the shaft (30) and the inner wall (14) of the outer cylinder (12). In the preferred embodiment, the tube (24) is preferably arranged within the outer cylinder (12) such that the tube (24) is compressed between the roller (36) and the side wall (19) of the outer cylinder (12). Thus, in the preferred first embodiment, the roller (36) is in close proximity to the shaft (30) and in contact with the tube (24) such that the tube (24) i.s compressed in the manner described above between the roller (36) and the inner ,wall (14) of the outer cylinder (12). However, conversely, the tube (24) may be arranged 'within the outer cylinder (12) such that the tube (24) is compressed between the roller x;36) and the shaft (30).
The roller (36) may be drivingly connected to the shaft (30) in any suitable manner and by any suitable mechanism, apparatus or structure which permits the rotation of the roller (36) about i.ts longitudinal axis and which preferably aligns the longitudinal axis of the roller (3~) such that it is substantially parallel to the axis of rotation of the shaft (30). As a result, when the roller (36) is in contact with the tube 1;24), which is compressed between the roller (36) and the inner wall (14) of the outer cylinder (12), rotation of the shaft (30) about its axis of rotation causes rotation of the roller (36) about its longitudinal axis. Conversely, rotation of the roller (36) about its longitudinal axis causes rotation of the shaft (30) about its axis of rotation.
In the preferred first embodiment, the roller (36) is rotatably mounted to the :haft (30), and thus, the roller (36) is drivingly connected to the shaft (30), by a pair of protrusions (38) from the shaft (30). The protrusions (38) extend from the shaft (30) towards the inner wall (14) of the outer cylinder (12), but are preferably of a size such that the protrusions (38) do not contact the tube (24). The protrusions (38) are a spaced distance apart along the length of the shaft (30) such that the roller (36) may be mounted therebetween. Preferably, one protrusion (38) is located adjacent the bearing (32) at each of the first and second ends (16, 18) of the outer cylinder (12).
Each of the Ends of the roller (36) is rotatably mounted to the adjacent protrusion (38).
The roller (36) may be rotatably mounted to the protrusion (38) in any suitable manner which permits the roller (36) to function in the manner described herein. However, in the preferred first embodiment, the roller (36) is rotatably mounted to the protrusions (38) by a bearing (40).
,~?1983~ 1 Where the compressing means are comprised of a roller (36) as described above, the roller (36) forms greater than one location of compression of the tube (24).
;specifically, a line of compression is formed by each roller (36), which then contacts the tube (24) at greater than one location along its length.
Further, the device (10) is preferably comprised of greater than one roller (36), ~~nd more preferably, a multiple of rollers (36), being two or more.
Specifically, in the ~~referred first embodiment, the device (10) is comprised of three rollers (36). Where ;greater than one roller (3E~) is used, the rollers (36) are evenly or equally spaced about i:he shaft (30) in order to .assist in the centralizing of the shaft (30) and the rollers (36) ~;vithin the outer cylinder (12) and with respect to the inner wall (14) of the outer cylinder (12).
Finally, the device (10) is designed so that the shaft (30) and the rollers (36) are removable from the outer cylinder (12) for maintenance and other purposes.
Specifically, in the preferred first embodiment, the bearings (32) are removable to permit the removal of the shaft (30) and the rollers (36).
In the operation of the first embodiment of the device (10) as a pump, operation of the device (10) is achieved by rotation of the shaft (30). Specifically, any suitable motor (not shown) is preferably operably connected to the shaft (30) for driving the ~~haft (30). Further, the flow entrance portion (26) is associated with a supply of fluid.
For instance, when the device (10) is used downhole in a well bore for production of the well, the flow entrance portion (26) is in contact with the oil or other downhole fluids such that the fluid: may freely flow into the flow entrance portion (26) of the device (10). Operation of the motor, or any other suitable means for rotating the shaft (30), causes the shaft (30) i:o rotate. Rotation of the shaft (30) drives the rollers (36) and moves the location of compression along the length of the tube (24).
More particularly, the fluid enters the tube (24) at the flow entrance portion (26).
Each roller (36) is positioned on the shaft (30) such that the tube (24) is compressed to the point where the fluid would. tend not to move within the tube (24) past the line of compression formed by tree roller (36). The line of compression moves along the tube (24) by rotation of the sha:Et (30). Thus, the fluid is forced through the tube (24) due to the moving line of compression and finally exits the tube (24) at the flow exit portion (28). Continued rotation of the shaft (30) results in a continuous pumping of the fluid by the device (10).
_. 21 831 1 Operation of the preferred first embodiment of the device (10) as a motor is ~~chieved primarily by rotation of the roller (36) about its longitudinal axis. Specifically, ~:he flow entrance portion (26) of the tube (24) is associated with a supply of pressurized fluid. The pressurized fluid at the flow entrance portion (26) enters the tube (24) and e=ontacts the nearest location of compression of the tube (24). The pressure of the fluid acts at the location of compression to cause the roller (36) to rotate about its longitudinal axis. Movement of the roller (36) about the circumference of the inner wall (14) of the outer cylinder (12;) results in rotation of the shaft (30).
The fluid is then expelled from the flow exit portion (28).
Referring to Figures 14 through 17, the invention is further comprised of a ;second embodiment of the device (10). Except as specifically set out below, the second embodiment of the devic~° (10) is similar to the first embodiment of the device (10).
Specifically, where parts are similar and have the same structure and function, the <.~ame number will be used. for the second embodiment as in the first embodiment.
In the preferred second embodiment, the device (10) is comprised of two or more compressible tubes (24) for containing the fluid, and preferably a multiple of tubes (24) in order to permit higher rates of flow of the fluid in the tubes (24). Each of the tubes (24) is arranged circumferentially within the inner wall (14) of the outer cylinder (12). Thus, in the preferred second embodiment, each tube (24) is substantially perpendicular to the axis of rotation of the shaft (30) of the device (10).
Further, the tubes (24) are preferably in contact with the inner wall (14) of the outer cylinder (12).
Each tube (24) has a. first end (42) and a second end (44) located at opposite ends of the tube (24). Each of the first and second ends (42, 44) of the tube (24) passes into, and preferably through, the wall (19) of the outer cylinder (12). Thus, in the preferred ~;econd embodiment, the fluid enters the tubes (24) through the first end (42) of each tube (24) and the fluid exita the tubes (24) through the second end (44) of each tube (24) by passing through the outer cylinder (12). The first and second ends (42, 44) of the tubes (24) may pass through the outer cylinder (12) at any location about the circumference of the outer cylinder (12). However, in the preferred embodiment, the first and second ends (42,, 44) are located adjacent each other. Further, the first and ~;econd ends (42, 44) of each tube (24) pass through the outer cylinder (12) such that a line connecting the first ends (42) of each tube (24) is substantially parallel to the axis of - 2.196311 :rotation of the shaft (30) and a line connecting the ~cortd e~tds (44) of each tube (24) is ~~lso substantially parallel to the axis of rotation of the shaft (30).
The device (10) is further comprised of a flow entrance portion (46) and a flow exit portion (48) associated with the outer cylinder (12). Each of the flow entrance and exit portions (46, 48) may be comprised of any suitable structure such as a cavity defined by the side wall (19) of the outer cylinder (12). However, in the preferred :second embodiment, the flow entrance and exit portions (46, 48) are each comprised of a pipe, conduit or other suitable structure capable of directing the fluid therethrough, located adjacent the outer surface of the side wall (19) of the outer cylinder (12).
In the preferred second embodiment, the first end (42) of each tube (24) is connected to the flow en~:rance portion (46) such that the flow entrance portion (46) directs the fluid into the tubes (24). The second end (44) of each tube (24) is connected to the flow exit portion (48) such that the flow exit portion (48) directs the fluid out of the tubes (24). Preferably, each of the flow entrance and exit portions (46, 48) is aligned such that the fluid is directed into and out of the tubes (24) in a generally axial direction relative to the longitudinal axis of the outer cylinder (12).
Further, each of the flow entrance and e;cit portions (46, 48) defines a longitudinal axis extending therethrough and the longitudinal axes are preferably substantially parallel to the axis of rotation of the shaft (30). As well, in the preferred second embodiment, each of the flow entrance and exit portions (46, 48) is adjacent to, and preferably in contact with, the outer wall of the outer cylinder (12). As the fluid is directed into and out of the device (10) through the flow entrance and exit portions (46, 48), the end surfaces (20, 22) of the outer cylinder (12) need not permit the passage of the fluid therethrough.
Further, where desirable, i:he end surfaces may completely seal the ends (16, 18) of the outer cylinder (12).
In the preferred second embodiment, the shaft (30) is rotatably mounted within the outer cylinder (12) by bearings (32). However, as stated, the bearings (32) need not <:ontain any openings (34), as the tubes (24) do not pass through the first and second end surfaces (20, 22) of the outer cylinder (12). Further, the compressing means, and in particular, each roller (36), compresses each tube (24) to form a location of compression in each tube (24). Further, the entire roller (36) contacts each tube (24) of the device (10) to form a line of compression. 'This line of compression is then movable along the length of each tube (24) about the circumference of the outer cylinder (12).
Thus, in the preferred second embodiment, the fluid enters the device (10) ~:hrough the flow entrance portion (46) and into the first end (42) of each tube (24).
nnce passing through each tube (24), the fluid exits the tube (24) through the second end (44) of the tube (24) and enters the flow exit portion (48). As stated, in the preferred ;second embodiment, the fluid enters and exits the device (10) through the flow entrance and exit portions (46, 48) generally axially relative to the longitudinal axis of i:he outer cylinder (12).
When using the second embodiment of the device (10) as a pump, the operation of the device (10) is achieved by rotation of the shaft (30) as described above for the first embodiment. Thus, the d'~evice (10) is operably connected to a motor (not shown), or other mechanism or structure for operating the device (10). Specifically, the motor is operably connected to the shaft (30) for rotating the shaft. Further, the flow entrance portion (46) is associated with a supply of fluid. Thus, upon operation of the device (10), the shaft (30) is rotated in order to drive each roller (36) and move the line of compression along the length of the tubes (24) such that the fluid is drawn into the flow entrance portion (46) and expelled out of the flow exit portion (48). The fluid flows from the entrance cavity (4~) into the tubes (24) and is forced through the tubes (24) due to the moving lines of compression. The fluid then flows into the flow exit portion (48) and finally exits t:he pump axially from the flow exit portion (48).
(continuous rotation of the shaft (30) results in a continuous pumping of the fluid by the device (10).
When operating the second embodiment of the device (10) as a motor, operation of the device (10) is achieved by rotation of each roller (36) about its longitudinal axis. Further,, the flow entrance portion (46) is associated with a supply of pressurized fluid such that the pressurized fluid may enter the flow entrance portion (46). The pressurized fluid then flows into the first ends (42) of the tubes (24) and contacts the first location of compression along the length of the tube (24).
The pressure of the fluid acts apt the location of compression to cause the roller (36) to move about the circumference of the outer cylinder (12). Due to the connection between each roller (36) and the shaft (~0) of the device (10), movement of the roller (36) causes the ;haft (30) to rotate to operate as a motor. A continuous supply of pressurized fluid at the flow entrance portion (46) results in a continuous rotation of the shaft (30).
In the second aspect of tile second embodiment, the flow exit and entrance portions are aligned such that the fluid is directed into and out of the tubes in a generally axial direction relative to the longitudinal axis of the outer cylinder. Further, each of the flow entrance and exit portions defines a longitudinal axis and the longitudinal axes are preferably substantially parallel to the axis of rotation of the shaft.
In the preferred second embodiment, the compressing means may be comprised of any conventional structure, mechanism, device or apparatus suitable for, and capable of, compressing the tubes to form at least one location of compression in each tube, which location is moveable along the length of each tube. However, in the preferred second embodiment, the compressing means is comprised of at least one roller drivingly connected to the shaft. Preferably, the device is comprised of two or more, or a multiple, of rollers. Further, each roller may have a longitudinal axis extending therethrough and may be rotatably mounted to the shaft such that the longitudinal axis is substantially parallel to the axis of rotation of the shaft.
Further, in the preferred second embodiment, the tube is arranged within the outer cylinder such that the tube is compressed between the roller and the outer cylinder. However, alternately, the tube may be arranged within the outer cylinder ~;uch that the tube is compressed between the roller and the shaft. Further, the shaft and the roller may be removable from the outer cylinder.
When using the second embodiment of the invention as a motor, the entrance cavity is preferably associated with a supply of pressurized fluid such that the pressurized fluid enters the entrance cavity and acts at the location of compression to cause the roller to move. The roller is drivingly connected to the shaft such that the movement of the roller drives the shaft to cause the shaft to rotate. When using the ~,econd embodiment of the invention as a pump, the entrance cavity is preferably associated with a supply of fluid. The roller is drivingly connected to the shaft such that rotation of the shaft drives the roller and moves the location of compression ;long the tubes so that the fluid is drawn into the entrance cavity and expelled out of ithe exit cavity.
SUMMARY OF DRAWII'dGS
Embodiments of the invention will now be described with reference to the <~ccompanying drawings, i.n which:
Figure 1 is a side view of a first embodiment of the device shown in partial ;section and showing the u.se of one compressible tube therein;
Figure 2 is a second end view of the first embodiment of the device shown in higure 1;
Figure 3 is a first end view of the first embodiment of the device shown in higure 1;
Figure 4 is a cross-section of the first embodiment of the device taken along line ~E-4 of Figure 1;
Figure 5 is the side view of the first embodiment shown in Figure 1, in partial ~;ection showing the helical arrangement of the compressible tube;
Figure 6 is a side view of the first embodiment of the device shown in partial ~;ection and showing the use of multiple compressible tubes therein;
Figure 7 is a second end view of the first embodiment of the device shown in Figure 6;
Figure 8 is a first .end view of the first embodiment of the device shown in Figure 6;
Figure 9 is a cross-section of the first embodiment of the device taken along line ~~-9 of Figure 6;
Figure 10 is the side view of the first embodiment of the device shown in Figure E>, in partial section showing the helical arrangement of the compressible tubes;
Figure 11 is the side view of the first embodiment of the device shown in Figure n, in partial section and showing the absence of bearings at the ends of the outer ~~ylinder of the device;
Figure 12 is a second end view of the first embodiment of the device shown in :Figure 11;
Figure 13 is a first end view of the first embodiment of the device shown in JFigure 11;
Figure 14 is a side view of a second embodiment of the device shown in partial :section;
Figure 15 is a cross-section of the second embodiment of the device taken along line 15-15 of Figure 14;
Figure 16 is a second end view of the second embodiment of the device shown in Figure 14; and Figure 17 is a first end view of the second embodiment of the device shown in Figure 14.
DETAILED DESCRIPTIOI\f The within invention is comprised of a device (10) which may be used as either a motor or a pump, as described further below. As the device (10) is designed to be relatively compact, the cLevice (10) is particularly useful in confined spaces. For instance, the device (10) is particularly useful in the production of oil from an underground well bore such that the device (10) is located downhole within the well bore.
Referring to Figures 1 through 13, in a first embodiment of the device (10), the device (10) is comprised of an outer cylinder (12), a first end (16), a second end (18) and a side wall (19). Further, the outer cylinder (12) has a longitudinal axis extending therethrough defined by a line extending centrally through the outer cylinder (12) between the first and second ends (16, 18). As well, in the preferred first embodiment, _g_ the first end (16) i.s associated with a first end surface (20) while the second end (18) is associated with a second end surface (22).
However, the outer cylinder (12) need nor include the end surfaces (20,22) such that the ends (16,18) of the outer cylinder (12) are open. Any hollow enclosure and any shape of such enclosure suitable for, and compatible' with, the intended use of the device may be used. However, preferably the outer cylinder (12) is cylindrical in shape.
In the first embodiment, the device (10) is further comprised of at least one compressible tube (24) for containing the fluid.
However, preferably, a multiple of the compressible tubes (24), being two or more, as shown in Figures 6 through 13, comprises the device (10) in order to permit higher rates of flow of fluid through the device ( 10 ) . Each tube ( 24 ) may be comprised of any material compatible with the: particular use of the tube (24) as described herein. Specifically, the tube (24) must be compressible, to permit compression of the tube (24), and resilient in order to permit the tube (24) to rebound or return to its original form following its compression. Further, the tube (24) must be comprised of a material which is compatible with the type of fluid contained therein, as well as capable of withstanding the pressure of the fluid contained therein.
In the first embodiment, the compressible tube (24) is arranged helically within th~=_ outer cylinder (12). Preferably, as described further below, the tube (24) is in contact with an inner surface (14) of the side wall (19) of the outer cylinder (12). The tube (24) preferably extends ;substantially between the first and second ends (16, 18) of the outer cylinder (12) cylinder (12), but may terminate a spaced distance from the faces of ends (16, 18) within the outer cylinder (12) such that the tube (24) is not located at or adjacent each of the ends (1G, 18) of the outer cylinder (12).
Further , the tube (:?4) is comprised of a flow entrance portion (26) and a flow exit portion (28). Each of these portions (26, 28) is located at an opposing end of the tube immediately adjacent the end of the tube. ThE: flow entrance and exit portions (26, 28) may be of any desired length.
At least one of. the flow entrance and exit portions (26, 28) is preferably associated with its respective end (16, 18) such that the fluid passes through the end (16, 18) of the outer cylinder (12) and not through the side wall (19). For instance, the flow entrance portion (26) may be associated with the first end (16) of the outer cylinder (12) such t=hat the fluid passes into the tube (24) through the f first end ( 16 ) . Simi larly, the f low exit portion ( 28 ) may be associated with the second end (18) of the outer cylinder (12) such that the fluid passes out of the tube (24) through the second end (18). In the preferred first embodiment, both the flow entrance and exit portions (26, 28) a.re associated in this manner with their respective ends (16, 18). More particularly, the flow entrance and exit portions (26, a?8) are preferably aligned in the outer cylinder (12) such that the portions (26, 28) are generally parallel to the longitudinal axis o:E the outer cylinder (12).
In the preferred embodiment, each of the flow entrance and exit portions (26, 28) is located at or adjacent its respective end (16, 18), which ends constitute the exposed end faces of the outer cylinder (12); i.e. the end portions of the tubes themselves pass through these end faces. Thus, the fluid flows into the device (10) directly into the f7.ow entrance portion (26) and flows out of the flow exit portion (28) directly out of the device (10).
Alternately, as indicated above, the flow entrance and exit portions (26, 28) may be a spaced distance from their respective ends (16, 18) within the side wall (19) of the outer cylinder (12).
In this case, the f=Luid flows through the first end (16) of the outer cylinder and is directed by the side wall (19) into the flow entrance portion (26) of the tube (24). Similarly, fluid flows out of the flow exit portion (28) and is directed out of the outer cylinder (12) by the side wall (19).
In the preferred first embodiment, in which the outer cylinder (12) includes the first a.nd second end surfaces (20, 22), the end surfaces (20, 22) a:re associated with the respective ends (16, 18) in a manner compat_Lble with the intended function of the device (10) as described he=_rein and in a manner permitting the passage of l0 the fluid into and out of the ends (16, 18). The end surfaces (20, 22) may be located within the side wall (19) of the outer cylinder (12) a spaced distance from the ends (16, 18) . However, preferably, the end surfaces (20, 2.2) are located at or adjacent to the respective ends (16, 18) of the outer cylinder (12). Further, the flow entrance and exit portions (26, 28) of the tube (24) preferably pass through t:he end surfaces (20, 22) in a generally axial direction re7_ative to the longitudinal axis of the outer cylinder (12) . Where desiz-able, a suitable end surface (20, 22) may be chosen that inhibits or minimizes the flow of fluid into the outer cylinder (12), at either of the ends 916, 18) of the outer cylinder (12), other than through the tube (24). For instance, the second end surface (22) preferably provides a seal about the tube (24) such that the fluid is inhibited from flowing out of the flow exit portion (28) and back towards the first end (16) within the outer cylinder (12).
10~, -. 298311 The end surfaces (20, 22) may be comprised of any structure, device or apparatus .capable of providing an end surface for the outer cylinder (12) which permits the passage of the fluid therethrough,, such as suitable bearings, seals or gaskets. However, in the preferred first embodiment, the first and second end surfaces (20, 22) are ~~omprised of bearings (32) as described below.
The first embodiment of the device (10) is Further comprised of means for compressing the tube (24) and a rotatable shaft (30). The rotatable shaft (30) is at least ~~artially contained within the outer cylinder (12) and has an axis of rotation.
lPreferably, the axis of rot~~tion of the shaft (30) is aligned such that it extends through i:he first and second ends (16, 18), and thus, the end surfaces (20, 22). The shaft (30) itself need not extend through the ends (16, 18), however, in the preferred embodiment, the shaft (30) does extend through at least one of the first and second ends (16, 18).
As indicated, the shaft (30) is rotatably mounted within the device (10), and is preferably rotatably mounted to the outer cylinder (12). Further, the shaft (30) is preferably centrally located within the outer cylinder (12) in that it passes approximately through tree centre of the outer cylinder (12). The shaft (30) may be rotatably mounted within. the outer cylinder (12) in any suitable manner permitting the rotation of the shaft (~30) within the outer cylinder (12) and permitting the fluid to pass through the ends (16, 18). For instance, the shaft (30) may be rotatably mounted by the bearings, gaskets or seals comprising the end surfaces (20, 22).
In the preferred embodiment, the shaft (30) is rotatably mounted to the inner wall (14) of the outer cylinder (12) by one or more bearings (32) located adjacent each of the first and second ends (16, 18) of the outer cylinder (12). In this case, the bearings (32) comprise the end surfaces (20, 22) of the outer cylinder (12). In order that the flow Entrance and exit portions (26, 28) may pass through the first and second end surfaces (20, 22) respectively, the bearings (32) at each end (16, 18) define one or more openings (34). An opening (34) wiil be defined in the bearings (32) at the first end (16) of the outer cylinder (12) for each flow entrance portion (26) of each tube (24) passing through the first end surface (20). 'similarly, an opening (34) will be defined by the bearings (32) at the second end (18) of the outer cylinder (12) for the flow exit portion (28) of each tube (24) passing through. the second end surface (22). Accordingly, the number of tubes (24) that may be contained within the outer cylinder (12) may be limited by the manner in which the entrance and exit portions (26, 28) are permitted to pass through 219831 ~
the bearings (32). For in stance, an excessive number of openings (34) in the bearings (32) located at either of the first or second ends (16, 18) may weaken the structure of the ~~evice (10) or inadequately support the shaft (30) within the outer cylinder (12).
The shaft (30) is drivingly connected to the compressing means of the device ~;10). Due to this connection, during use of the device (30) as a pump, rotation of the shaft (30) operates the compressing means to cause the compressing means to move rthe fluid through the tube (24), as described further below. When using the device (10) ;~s a motor, as a result of the connection, operation of the compressing means causes rotation of the shaft (30), as described further below.
The means for compressing the tube (24) are preferably contained within the outer cylinder (12). The compressing means compress the tube (24) to form at least one location of compression along th.e tube (12). Further, the location of compression is movable along the leng-th of the tube (24). The compressing means preferably ;substantially collapse the tube (24) at the location of compression such that fluid in the i:ube (24) would tend not to pass through the location of compression. As a result, ~Nhen the location of compression moves along the length of the tube (24), a peristaltic action results in which tile fluid. in front of each location of compression is forced i:hrough the tube (24).
The compressing means :may be comprised of any conventional structure, device, mechanism or apparatus capable of, and suitable for, compressing the tube (24) in the manner described herein. The compressing means may move in any manner or direction which causes the location of compression to move along the tube (24). For instance, the compressing means may move substantially circumferentially within the outer cylinder (12), longitlzdinally within the outer cylinder (12) or in a combination of these movements. However, in the preferred first embodiment, the compressing means is comprised of at least one roller (36) movable substantially circumferentially within the outer cylinder y12) and drivingly connected to the shaft (30). Any shape or ~;ize of roller (36) suitable for, and compatible with, performing the function of the roller (36) as described herein may be used. However, the roller (36) is preferably ~;ubstantially circular on cross-section. Further, the roller (36) has a longitudinal axis extending therethrough such that the roller (36) rotates about its longitudinal axis. In the preferred first embodiment, t:he roller (36) is rotatably mounted to the shaft (30) ~;uch that its longitudinal axis is ~>referably substantially parallel to the axis of rotation of the shaft (30).
L1983ii Further, the diameter of the roller (36) is preferably such that the roller (36) extends between the shaft (30) and the inner wall (14) of the outer cylinder (12). In the preferred embodiment, the tube (24) is preferably arranged within the outer cylinder (12) such that the tube (24) is compressed between the roller (36) and the side wall (19) of the outer cylinder (12). Thus, in the preferred first embodiment, the roller (36) is in close proximity to the shaft (30) and in contact with the tube (24) such that the tube (24) i.s compressed in the manner described above between the roller (36) and the inner ,wall (14) of the outer cylinder (12). However, conversely, the tube (24) may be arranged 'within the outer cylinder (12) such that the tube (24) is compressed between the roller x;36) and the shaft (30).
The roller (36) may be drivingly connected to the shaft (30) in any suitable manner and by any suitable mechanism, apparatus or structure which permits the rotation of the roller (36) about i.ts longitudinal axis and which preferably aligns the longitudinal axis of the roller (3~) such that it is substantially parallel to the axis of rotation of the shaft (30). As a result, when the roller (36) is in contact with the tube 1;24), which is compressed between the roller (36) and the inner wall (14) of the outer cylinder (12), rotation of the shaft (30) about its axis of rotation causes rotation of the roller (36) about its longitudinal axis. Conversely, rotation of the roller (36) about its longitudinal axis causes rotation of the shaft (30) about its axis of rotation.
In the preferred first embodiment, the roller (36) is rotatably mounted to the :haft (30), and thus, the roller (36) is drivingly connected to the shaft (30), by a pair of protrusions (38) from the shaft (30). The protrusions (38) extend from the shaft (30) towards the inner wall (14) of the outer cylinder (12), but are preferably of a size such that the protrusions (38) do not contact the tube (24). The protrusions (38) are a spaced distance apart along the length of the shaft (30) such that the roller (36) may be mounted therebetween. Preferably, one protrusion (38) is located adjacent the bearing (32) at each of the first and second ends (16, 18) of the outer cylinder (12).
Each of the Ends of the roller (36) is rotatably mounted to the adjacent protrusion (38).
The roller (36) may be rotatably mounted to the protrusion (38) in any suitable manner which permits the roller (36) to function in the manner described herein. However, in the preferred first embodiment, the roller (36) is rotatably mounted to the protrusions (38) by a bearing (40).
,~?1983~ 1 Where the compressing means are comprised of a roller (36) as described above, the roller (36) forms greater than one location of compression of the tube (24).
;specifically, a line of compression is formed by each roller (36), which then contacts the tube (24) at greater than one location along its length.
Further, the device (10) is preferably comprised of greater than one roller (36), ~~nd more preferably, a multiple of rollers (36), being two or more.
Specifically, in the ~~referred first embodiment, the device (10) is comprised of three rollers (36). Where ;greater than one roller (3E~) is used, the rollers (36) are evenly or equally spaced about i:he shaft (30) in order to .assist in the centralizing of the shaft (30) and the rollers (36) ~;vithin the outer cylinder (12) and with respect to the inner wall (14) of the outer cylinder (12).
Finally, the device (10) is designed so that the shaft (30) and the rollers (36) are removable from the outer cylinder (12) for maintenance and other purposes.
Specifically, in the preferred first embodiment, the bearings (32) are removable to permit the removal of the shaft (30) and the rollers (36).
In the operation of the first embodiment of the device (10) as a pump, operation of the device (10) is achieved by rotation of the shaft (30). Specifically, any suitable motor (not shown) is preferably operably connected to the shaft (30) for driving the ~~haft (30). Further, the flow entrance portion (26) is associated with a supply of fluid.
For instance, when the device (10) is used downhole in a well bore for production of the well, the flow entrance portion (26) is in contact with the oil or other downhole fluids such that the fluid: may freely flow into the flow entrance portion (26) of the device (10). Operation of the motor, or any other suitable means for rotating the shaft (30), causes the shaft (30) i:o rotate. Rotation of the shaft (30) drives the rollers (36) and moves the location of compression along the length of the tube (24).
More particularly, the fluid enters the tube (24) at the flow entrance portion (26).
Each roller (36) is positioned on the shaft (30) such that the tube (24) is compressed to the point where the fluid would. tend not to move within the tube (24) past the line of compression formed by tree roller (36). The line of compression moves along the tube (24) by rotation of the sha:Et (30). Thus, the fluid is forced through the tube (24) due to the moving line of compression and finally exits the tube (24) at the flow exit portion (28). Continued rotation of the shaft (30) results in a continuous pumping of the fluid by the device (10).
_. 21 831 1 Operation of the preferred first embodiment of the device (10) as a motor is ~~chieved primarily by rotation of the roller (36) about its longitudinal axis. Specifically, ~:he flow entrance portion (26) of the tube (24) is associated with a supply of pressurized fluid. The pressurized fluid at the flow entrance portion (26) enters the tube (24) and e=ontacts the nearest location of compression of the tube (24). The pressure of the fluid acts at the location of compression to cause the roller (36) to rotate about its longitudinal axis. Movement of the roller (36) about the circumference of the inner wall (14) of the outer cylinder (12;) results in rotation of the shaft (30).
The fluid is then expelled from the flow exit portion (28).
Referring to Figures 14 through 17, the invention is further comprised of a ;second embodiment of the device (10). Except as specifically set out below, the second embodiment of the devic~° (10) is similar to the first embodiment of the device (10).
Specifically, where parts are similar and have the same structure and function, the <.~ame number will be used. for the second embodiment as in the first embodiment.
In the preferred second embodiment, the device (10) is comprised of two or more compressible tubes (24) for containing the fluid, and preferably a multiple of tubes (24) in order to permit higher rates of flow of the fluid in the tubes (24). Each of the tubes (24) is arranged circumferentially within the inner wall (14) of the outer cylinder (12). Thus, in the preferred second embodiment, each tube (24) is substantially perpendicular to the axis of rotation of the shaft (30) of the device (10).
Further, the tubes (24) are preferably in contact with the inner wall (14) of the outer cylinder (12).
Each tube (24) has a. first end (42) and a second end (44) located at opposite ends of the tube (24). Each of the first and second ends (42, 44) of the tube (24) passes into, and preferably through, the wall (19) of the outer cylinder (12). Thus, in the preferred ~;econd embodiment, the fluid enters the tubes (24) through the first end (42) of each tube (24) and the fluid exita the tubes (24) through the second end (44) of each tube (24) by passing through the outer cylinder (12). The first and second ends (42, 44) of the tubes (24) may pass through the outer cylinder (12) at any location about the circumference of the outer cylinder (12). However, in the preferred embodiment, the first and second ends (42,, 44) are located adjacent each other. Further, the first and ~;econd ends (42, 44) of each tube (24) pass through the outer cylinder (12) such that a line connecting the first ends (42) of each tube (24) is substantially parallel to the axis of - 2.196311 :rotation of the shaft (30) and a line connecting the ~cortd e~tds (44) of each tube (24) is ~~lso substantially parallel to the axis of rotation of the shaft (30).
The device (10) is further comprised of a flow entrance portion (46) and a flow exit portion (48) associated with the outer cylinder (12). Each of the flow entrance and exit portions (46, 48) may be comprised of any suitable structure such as a cavity defined by the side wall (19) of the outer cylinder (12). However, in the preferred :second embodiment, the flow entrance and exit portions (46, 48) are each comprised of a pipe, conduit or other suitable structure capable of directing the fluid therethrough, located adjacent the outer surface of the side wall (19) of the outer cylinder (12).
In the preferred second embodiment, the first end (42) of each tube (24) is connected to the flow en~:rance portion (46) such that the flow entrance portion (46) directs the fluid into the tubes (24). The second end (44) of each tube (24) is connected to the flow exit portion (48) such that the flow exit portion (48) directs the fluid out of the tubes (24). Preferably, each of the flow entrance and exit portions (46, 48) is aligned such that the fluid is directed into and out of the tubes (24) in a generally axial direction relative to the longitudinal axis of the outer cylinder (12).
Further, each of the flow entrance and e;cit portions (46, 48) defines a longitudinal axis extending therethrough and the longitudinal axes are preferably substantially parallel to the axis of rotation of the shaft (30). As well, in the preferred second embodiment, each of the flow entrance and exit portions (46, 48) is adjacent to, and preferably in contact with, the outer wall of the outer cylinder (12). As the fluid is directed into and out of the device (10) through the flow entrance and exit portions (46, 48), the end surfaces (20, 22) of the outer cylinder (12) need not permit the passage of the fluid therethrough.
Further, where desirable, i:he end surfaces may completely seal the ends (16, 18) of the outer cylinder (12).
In the preferred second embodiment, the shaft (30) is rotatably mounted within the outer cylinder (12) by bearings (32). However, as stated, the bearings (32) need not <:ontain any openings (34), as the tubes (24) do not pass through the first and second end surfaces (20, 22) of the outer cylinder (12). Further, the compressing means, and in particular, each roller (36), compresses each tube (24) to form a location of compression in each tube (24). Further, the entire roller (36) contacts each tube (24) of the device (10) to form a line of compression. 'This line of compression is then movable along the length of each tube (24) about the circumference of the outer cylinder (12).
Thus, in the preferred second embodiment, the fluid enters the device (10) ~:hrough the flow entrance portion (46) and into the first end (42) of each tube (24).
nnce passing through each tube (24), the fluid exits the tube (24) through the second end (44) of the tube (24) and enters the flow exit portion (48). As stated, in the preferred ;second embodiment, the fluid enters and exits the device (10) through the flow entrance and exit portions (46, 48) generally axially relative to the longitudinal axis of i:he outer cylinder (12).
When using the second embodiment of the device (10) as a pump, the operation of the device (10) is achieved by rotation of the shaft (30) as described above for the first embodiment. Thus, the d'~evice (10) is operably connected to a motor (not shown), or other mechanism or structure for operating the device (10). Specifically, the motor is operably connected to the shaft (30) for rotating the shaft. Further, the flow entrance portion (46) is associated with a supply of fluid. Thus, upon operation of the device (10), the shaft (30) is rotated in order to drive each roller (36) and move the line of compression along the length of the tubes (24) such that the fluid is drawn into the flow entrance portion (46) and expelled out of the flow exit portion (48). The fluid flows from the entrance cavity (4~) into the tubes (24) and is forced through the tubes (24) due to the moving lines of compression. The fluid then flows into the flow exit portion (48) and finally exits t:he pump axially from the flow exit portion (48).
(continuous rotation of the shaft (30) results in a continuous pumping of the fluid by the device (10).
When operating the second embodiment of the device (10) as a motor, operation of the device (10) is achieved by rotation of each roller (36) about its longitudinal axis. Further,, the flow entrance portion (46) is associated with a supply of pressurized fluid such that the pressurized fluid may enter the flow entrance portion (46). The pressurized fluid then flows into the first ends (42) of the tubes (24) and contacts the first location of compression along the length of the tube (24).
The pressure of the fluid acts apt the location of compression to cause the roller (36) to move about the circumference of the outer cylinder (12). Due to the connection between each roller (36) and the shaft (~0) of the device (10), movement of the roller (36) causes the ;haft (30) to rotate to operate as a motor. A continuous supply of pressurized fluid at the flow entrance portion (46) results in a continuous rotation of the shaft (30).
Claims (23)
1. A compressible tube fluid flow device comprising:
(a) an outer cylinder having a first end, a second end, a side wall and a longitudinal axis extending therethrough;
(b) at least one compressible tube, for containing the fluid, arranged helically within the outer cylinder, wherein the tube has a flow entrance portion associated with the first end of the outer cylinder and a flow exit portion associated with the second end of the outer cylinder and wherein at least one of the flow entrance and exit portions is associated with its respective end such that the fluid passes out of the tube through the end of the outer cylinder and not through the wall;
(c) means, contained within the outer cylinder, for compressing the tube to farm at least one location of compression, wherein the location of compression is movable along the length of the tube; and (d) a rotatable shaft, having an axis of rotation, drivingly connected to the compressing means and operable to rotate said compressing means.
(a) an outer cylinder having a first end, a second end, a side wall and a longitudinal axis extending therethrough;
(b) at least one compressible tube, for containing the fluid, arranged helically within the outer cylinder, wherein the tube has a flow entrance portion associated with the first end of the outer cylinder and a flow exit portion associated with the second end of the outer cylinder and wherein at least one of the flow entrance and exit portions is associated with its respective end such that the fluid passes out of the tube through the end of the outer cylinder and not through the wall;
(c) means, contained within the outer cylinder, for compressing the tube to farm at least one location of compression, wherein the location of compression is movable along the length of the tube; and (d) a rotatable shaft, having an axis of rotation, drivingly connected to the compressing means and operable to rotate said compressing means.
2. The device as claimed in claim 1 wherein the flow entrance portion is associated with the first end of the outer cylinder such that the fluid passes into the tube through the first end of the outer cylinder and not through the wall and wherein the flow exit portion is associated with the second end of the outer cylinder such that the fluid passes out of the tube through the second end of the outer cylinder and not through the wall.
3. The device as claimed in claim 2 wherein the fluid passes into and out of the outer cylinder in a direction generally parallel to the longitudinal axis of the outer cylinder.
4. The device as claimed in claim 3 wherein the device is comprised of a multiple of the compressible tubes.
5. The device as claimed in claim 4 wherein the compressing means is comprised of at least one roller drivingly connected to the shaft.
6. The device as claimed in claim 5 wherein each roller has a longitudinal axis extending therethrough and is rotatably mounted to the shaft such that the longitudinal axis is substantially parallel to the axis of rotation of the shaft.
7. The device as claimed in claim 6 wherein the tube is arranged within the outer cylinder such that the tube is compressed between the roller and the wall of the outer cylinder.
8. The device as claimed in claim 6 wherein the device is comprised of a multiple of the rollers.
9. The device as claimed in claim 6 wherein the shaft and roller are removable from the outer cylinder.
10. The device as claimed in claim 6 wherein the flow entrance portion of the tube is associated with a supply of pressurized fluid such that the pressurized fluid at the flow entrance portion acts at the location of compression to cause the roller to move and wherein the roller is drivingly connected to the shaft such that the movement of the roller drives the shaft to cause the shaft to rotate.
11. The device as claimed in claim 6 wherein the flow entrance portion of the tube is associated with a supply of fluid and wherein the roller is drivingly connected to the shaft such that rotation of the shaft drives the roller and moves the location of compression along the tube so that the fluid is drawn into the flow entrance portion and expelled out of the flow exit portion.
12. A compressible tube fluid flow device comprising:
(a) an outer cylinder having a first end face, a second end face, a side wall and a longitudinal axis extending therethrough, said end faces being exposed at ends of the device;
(b) at least one compressible tube for containing the fluid arranged helically within said outer cylinder, wherein the tube has a flow entrance portion located at said first end face of the outer cylinder and a flow exit portion located at the second end face of the outer cylinder and wherein at least one of the flow entrance and exit portions is associated with its respective end face such that the fluid passes out of the tube through the exposed end face of the outer cylinder and not through the wall;
(c) means, contained within the outer cylinder, for compressing the tube to form at least one location of compression, wherein the location of compression is movable along the length of the tube; and (d) a rotatable shaft, having an axis of rotation, drivingly connected to the compressing means and operable to rotate said compressing means.
(a) an outer cylinder having a first end face, a second end face, a side wall and a longitudinal axis extending therethrough, said end faces being exposed at ends of the device;
(b) at least one compressible tube for containing the fluid arranged helically within said outer cylinder, wherein the tube has a flow entrance portion located at said first end face of the outer cylinder and a flow exit portion located at the second end face of the outer cylinder and wherein at least one of the flow entrance and exit portions is associated with its respective end face such that the fluid passes out of the tube through the exposed end face of the outer cylinder and not through the wall;
(c) means, contained within the outer cylinder, for compressing the tube to form at least one location of compression, wherein the location of compression is movable along the length of the tube; and (d) a rotatable shaft, having an axis of rotation, drivingly connected to the compressing means and operable to rotate said compressing means.
13. A compressible tube fluid flow device according to claim 12, wherein end portions of the tube pass through the end faces.
14. A compressible tube fluid flow device comprising:
(a) an outer cylinder having a first end, a second end and a longitudinal axis extending therethrough;
(b) a multiple of compressible tubes, for containing the fluid, arranged circumferentially within the outer cylinder, wherein each tube has a first end and a second end;
(c) means, contained within the outer cylinder, for compressing the tubes to form at least one location of compression in each tube, wherein the location of compression is movable along the length fo each tube;
(d) a rotatable shaft, having an axis of rotation, drivingly connected to the compressing means;
(e) a flow entrance manifold associated with the outer cylinder and connected to the first ends of the tubes for directing the fluid into the tubes; and (f) a flow exit manifold associated with the outer cylinder and connected to tree second ends of the tubes for directing the fluid out of the tubes.
(a) an outer cylinder having a first end, a second end and a longitudinal axis extending therethrough;
(b) a multiple of compressible tubes, for containing the fluid, arranged circumferentially within the outer cylinder, wherein each tube has a first end and a second end;
(c) means, contained within the outer cylinder, for compressing the tubes to form at least one location of compression in each tube, wherein the location of compression is movable along the length fo each tube;
(d) a rotatable shaft, having an axis of rotation, drivingly connected to the compressing means;
(e) a flow entrance manifold associated with the outer cylinder and connected to the first ends of the tubes for directing the fluid into the tubes; and (f) a flow exit manifold associated with the outer cylinder and connected to tree second ends of the tubes for directing the fluid out of the tubes.
15. The device as claimed in claim 14 wherein the flow entrance and exit manifolds are aligned such that the fluid is directed into and out of the tubes in a generally axial direction relative to the longitudinal axis of the outer cylinder.
16. The device as claimed in claim 15 wherein each of the flow entrance and exit manifolds defines a longitudinal axis and wherein the longitudinal axes are substantially parallel to the axis of rotation of the shaft.
17. The device as claimed in claim 16 wherein the compressing means is comprised of at least one roller drivingly connected to the shaft.
18. The device as claimed in claim 17 wherein each roller has a longitudinal axis extending therethrough and is rotatably mounted to the shaft such that the longitudinal axis is substantially parallel to the axis of rotation of the shaft.
19. The device as claimed in claim 18 wherein the tube is arranged within the outer cylinder such that the tube is compressed between the roller and the outer cylinder.
20. The device as claimed in claim 18 wherein the device is comprised of a multiple of the rollers.
21. The device as claimed in claim 18 wherein the shaft and the roller are removable from the outer cylinder.
22~
22. The device as claimed in claim 18 wherein the entrance cavity is associated with a supply of pressurized fluid such that the pressurized fluid enters the entrance cavity and acts at the location of compression to cause the roller to move and wherein the roller is drivingly connected to the shaft such that the movement of the roller drives the shaft to cause the shaft to rotate.
22. The device as claimed in claim 18 wherein the entrance cavity is associated with a supply of pressurized fluid such that the pressurized fluid enters the entrance cavity and acts at the location of compression to cause the roller to move and wherein the roller is drivingly connected to the shaft such that the movement of the roller drives the shaft to cause the shaft to rotate.
23. The device as claimed in claim 18 wherein the entrance cavity is associated with a supply of fluid and wherein the roller is drivingly connected to the shaft such that the rotation of the shaft drives the roller and moves the location of compression along the tubes so that the fluid is drawn into the entrance cavity and expelled out of the exit cavity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA 2198311 CA2198311C (en) | 1996-02-22 | 1997-02-24 | Compressible tube fluid flow device |
Applications Claiming Priority (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US08/605,678 | 1996-02-22 | ||
| US08/605,678 US5688112A (en) | 1996-02-22 | 1996-02-22 | Rotor axis aligned tube and outlet for a peristaltic pump system |
| CA2,170,917 | 1996-03-04 | ||
| CA002170917A CA2170917A1 (en) | 1996-02-22 | 1996-03-04 | Multiple tube peristaltic pump |
| CA 2198311 CA2198311C (en) | 1996-02-22 | 1997-02-24 | Compressible tube fluid flow device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CA2198311A1 CA2198311A1 (en) | 1997-08-22 |
| CA2198311C true CA2198311C (en) | 2001-06-19 |
Family
ID=27170129
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA 2198311 Expired - Fee Related CA2198311C (en) | 1996-02-22 | 1997-02-24 | Compressible tube fluid flow device |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA2198311C (en) |
-
1997
- 1997-02-24 CA CA 2198311 patent/CA2198311C/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CA2198311A1 (en) | 1997-08-22 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US4997347A (en) | Peristaltic motor | |
| US5295810A (en) | Apparatus for compressing a fluid | |
| US5417281A (en) | Reverse Moineau motor and pump assembly for producing fluids from a well | |
| US6561777B2 (en) | Downhole roller vane motor and roller vane pump | |
| EP0460202A1 (en) | DEVICE FOR PROGRESSIVE BORE WITH FLOW RESTRICTION SYSTEM. | |
| US5688112A (en) | Rotor axis aligned tube and outlet for a peristaltic pump system | |
| US5857842A (en) | Seamless pump with coaxial magnetic coupling including stator and rotor | |
| CN86101407A (en) | Face seal | |
| CA2196250A1 (en) | Progressing cavity pumps with split extension tubes | |
| CA2198311C (en) | Compressible tube fluid flow device | |
| CA2486277C (en) | Down-hole vane motor | |
| US20050129545A1 (en) | Peristaltic pumping mechanism with geared occlusion rollers | |
| EP0168366B1 (en) | A device for pumping oil | |
| CA1301546C (en) | Compact twin piston pump | |
| US5030071A (en) | Roller van motor with fluid biassed roller | |
| WO2008131846A1 (en) | Delivery pump | |
| CN111734602B (en) | Self-priming centrifugal pump capable of treating gas-liquid mixed medium | |
| US5871341A (en) | Peristaltic pump driven pump roller apparatus and methodology | |
| CN111237196B (en) | A double-suction rotary shell pump supported at both ends, low-vibration and high-efficiency | |
| US2887958A (en) | Pump | |
| US3544243A (en) | Rotary fluid pump mechanism and the like | |
| GB764494A (en) | Improvements in or relating to rotary pumps | |
| US4541781A (en) | Piston pump having inertial rollers mounted for radial movement | |
| RU2221934C2 (en) | Peristaltic pump | |
| GB2211557A (en) | Low drag peristaltic pump |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EEER | Examination request | ||
| MKLA | Lapsed |