MXPA97001393A - Camera orifice adjustment do - Google Patents

Abstract

An orifice plate assembly for use with a dual chamber orifice adjustment, comprising an orifice plate conveyor, the orifice plate conveyor being formed with a hole therethrough and having an integrally formed collar portion with the orifice plate conveyor, the collar portion surrounding the through hole, the collar portion having an inner circumferential portion, an orifice plate seal adapted to be received by the collar portion, formed of an elastic material, the orifice plate seal having at least one planar portion dimensioned for splicing the orifice plate conveyor within the collar portion, a bed extending within the through hole formed through the orifice plate conveyor, and an outer circumferential wall, at least a part of the outer circumferential wall being located in an obtuse angle has In the plane of the orifice plate conveyor, the inner circumferential portion of the collar portion having an angle that is substantially complementary to the obtuse angle, the outer circumferential wall being dimensioned to maintain contact with the inner circumferential wall of the collar portion so as to that the inner circumferential portion traps the outer circumferential portion, and an orifice plate mounted on and retained by the orifice plate seal within the through hole formed in the orifice plate conveyor.

Description

DOUBLE CAMERA HOLE ADJUSTMENT BACKGROUND OF THE INVENTION This invention relates generally to a flow measurement device and more particularly to a dual chamber orifice adjustment comprising a flow measurement device which is an orifice plate which measures and uses differential pressure as a measurement base of flow. While such orifice and orifice plate settings have taken various forms, they have encountered a number of problems, including a high maintenance requirement, the possibility of operator error and complicated individual devices to perform the required function. Generally, pipelines are used to transport fluids, including but not limited to oil and gas from wells. In order to measure the flow velocity of those fluids in the pipe, the orifice plates are installed in special settings, or orifice plate conveyor and are then installed in line within the pipe sections. When placed inside the pipe and in the fluid flow path, the orifice plates somehow restrict the flow. Subsequently, a differential flow pressure is developed between the flow on the upstream and downstream side of the orifice plate. Based on this measurement and, the comparison of the cross-sectional area of the pipe to the cross-sectional area of the through hole smaller formed in the orifice plate, the flow rate of the fluid can be determined In many pipes that must have their flow measured, it is very expensive and time-consuming to close the pipe to change the orifice plate or, make other required repairs To the same As the orifice plate must be placed inside the pipe in order to measure the flow of the fluid, it has been found to be beneficial to allow the removal and placement of such orifice plates without depressurizing the fluid flow and, emptying The pipe Therefore, while the first orifice plates have been placed inside the pipes and, have required the closing of the pipe in order to change the orifice plates, more recently, systems have been designed to allow the insertion and removal of orifice plates in the pipe without interrupting the flow of the fluid through it. In order to properly employ such a system that allows the insertion and removal of of the orifice plate without interrupting the flow of fluid, a number of features are required in the system. First, it is necessary to have a first chamber comprising the flow path of the fluid through the pipe and a second chamber, selectively separated from the first chamber which does not span the path of fluid flow through the pipeline. These chambers must be selectively maintained either in fluid communication with each other or sealed from each other and must be maintained in a fluid-tight state even under high pressure as applied by the fluid flow in a pipe The The system must allow the movement of the orifice plate from the pipe and the first chamber, inside the second chamber which can be subsequently separated from the first chamber by a fluid-tight seal and subsequently opened so that the orifice plate it can be replaced, repaired or simply removed. Such systems have been well known in the art and are shown in U.S. Patent No. 5,318,073 (Kendrick et al.) And any number of "larger" orifice settings (higher referring to a dual chamber system) such as produced by Daniel, Perry Equipment Corporation and several other manufacturers. As noted above, each of these apparatuses works with the requirement of a fluid-tight seal between a first chamber, which is in fluid communication with the pipe and covers the fluid flow path of the pipe and, a second chamber that can be selectively placed inside and outside the fluid communication with it. In order to achieve such a seal before the double chamber orifice adjustments are supported on a slidable valve that requires the addition of grease or other sealing fluid therein to ensure that the valve slides properly and forms a watertight seal. fluid when closed The sealing member is shown as a shut-off valve V in U.S. Patent No. 4,014,366 (Critendon) This patent discloses a slidable valve fit as used in the prior art, by means of which a Valve plug portion Sliding has teeth on a portion thereof, which are interdented with a gear and rotary handle or other automatic rotation device. By rotating this handle or device, the user moves the slide valve plug portion against the passage between the first and second chambers and therefore seals the second chamber of the first chamber. However, devices using such a sliding mechanism have suffered a number of defects. First, the time required to move such valve portion in position is great. Additionally, said device uses a plurality of gears, grids and pinions that complicate the device and require the regular insertion of grease or other sealing fluid into the apparatus in order to preserve a fluid tight seal between the slidable valve plug mechanism and the cover that forms the passage between the first and second chambers. Finally, since such a sliding valve plug device requires the determination of an operator whether or not the fluid-tight seal required has been formed and, if the plug portion of the slide valve has been moved to its proper position, it is possible that the fluid flow could be released before the seal has formed, thus allowing the fluid under pressure from the pipe to escape and therefore not be contained within the pipe or the fit causing a situation potentially harmful. Therefore, it would be beneficial to provide a valve mechanism for sealing between a first and second cameras of a double-chamber orifice adjustment that could move to its place quickly, which does not require any insertion of grease or other lubricating substance and, which is of simple design and is automatically placed in the proper position to seal the chamber so that the fluid can not escape Additionally, it would be beneficial to provide a secure locking mechanism so that the valve mechanism could not be moved from its accidentally sealed position. The accuracy of the measurement given by the double chamber orifice adjustment depends on a large number of factors, including, as mentioned above, the ratio of the cross-sectional area of the through hole formed in the orifice plate to the cross-sectional area of the pipe through which the fluid is flowing and, additionally, the centering of the through-hole formed in the orifice plate with the fluid flow path and the spillage of any fluid around the orifice of the plate that does not flow through the orifice formed in the orifice plate Therefore, to ensure that the orifice plate adequately measures the fluid flowing in the pipe, it is necessary to ensure that all the fluid flowing through the pipe is directed through the through hole formed in the orifice plate and that nothing is allowed to flow through the pipe without passing through this through hole in the p Orifice lacquer It is also necessary to ensure that the seal that holds the orifice plate remains fluid-tight, without allowing in this way that no fluid flows through another pipeline other than the through hole formed in the orifice plate. The seal member for an orifice plate is shown in U.S. Patent No. 5,318,073 issued to Kendrick et al., Wherein a seal member extending over the upper and lower surface of an orifice plate is shown. , in order to ensure that the orifice plate remains in contact with the solid portions of the pipe to ensure that the fluid does not flow between them. While such a design has been satisfactory in some way, the design is more effective at properly positioning the seal within the chamber in the pipeline. However, during the insertion of the orifice plate while the fluid is flowing through the pipeline, it is possible that the seal member could deform improperly due to the downward movement of the orifice plate and the seal member through the fluid moving laterally in the pipe. If it deforms improperly, it is possible that the seal is not seated properly and will therefore allow water to pass between the seal and the orifice plate and not direct all of the fluid through the through hole formed in the plate orifice thus affecting the accuracy of any fluid measurement Therefore, it would be beneficial to provide a seal member for an orifice plate that does not deform inadequately when the orifice plate is inserted into a pipe under conditions of fluid presupposed and that therefore seals properly the orifice plate to the pipe and increase the accuracy of the fluid flow measurement Finally, an additional requirement of the proper fluid measurement is that the through hole formed in the orifice plate through which the fluid is directed It must remain centered in the pipe and in the fluid flow path. However, since the orifice plate is inserted into the pipe and the fluid flow path under pressure, it is possible that the orifice plate may not be centered Precisely within the fluid flow path This off-center positioning can result in inaccurate measurement of fluid flow rates. It would therefore be desirable to also provide an orifice plate whose position can be easily adjusted while the plate of hole remains inside the conveyor plate In the double chamber orifice settings of the prior art, the second One or more chamber is formed with two valves that open selectively. The first one is an equalizing valve. The use of this valve allows the equalization of the pressure between the first and the second chamber, thus allowing the fluid inside the second chamber. , without removing the seal between the first and second chambers The second is an extraction or evacuation valve where after the plate moves from the first chamber to the second chamber and the seal between the first chamber and the second chamber is replaced , the fluid maintained inside the second chamber is evacuated in order to reduce the pressure in the same. While the prior art devices use two valves for that purpose, it is possible, by an operator error, to open both valves at the same time, thereby allowing the material to flow under high pressure from the first chamber inwardly. the second chamber and that the evacuation valve is forced, thus causing a potentially harmful situation. Therefore, it would be desirable to provide a system in which it is not possible for there to be communication between the first and second chambers and between the second chamber and the external atmosphere at the same time BRIEF DESCRIPTION OF THE INVENTION Generally speaking, according to the invention, a double chamber orifice adjustment is provided to measure the fluid flow in a pipe and that allows the change of the orifice plate employed therein which measures the fluid flow without the depressurization of the pipe and without the closing of the flow of fluid therein First, an apparatus is provided in which an eccentric plug valve is provided to seal between a first and a second chamber in the apparatus The eccentric plug is selectively movable from the first position where the plug seals the passage between the first and second chambers, to a second position where the first and second chambers are placed in fluid communication with each other. plug from the first to the second position is achieved by the rotation, either mechanical or automatic, of a rotating positioning arm that is driven by gears to execute this movement. In a preferred embodiment, a safety locking mechanism is provided on the arm. of rotating positioning to ensure that the movement of the seal from the first position to the second position does not start by mistake. Specifically, this will ensure that the second chamber is not open to the oue when the seal between the first and second chambers is open Specifically, a circular passage orifice is formed in an orifice plate conveyor having a raised collar portion A seal Orifice plate has an upper portion having an upper diameter and a lower portion having a smaller diameter, the lower diameter being slightly larger than that of the upper diameter. Therefore the orifice plate seals form an outer circumferential edge at an angle where the larger lower diameter meets the smaller upper diameter This angle is imitated by a similar angle on the inner edge of the raised collar portion of the conveyor of orifice plate and the raised collar portion thereof Therefore, the orifice plate seal is slightly compressed and placed inside the orifice plate, the angled circumferential edge engaging the angled inner edge of the raised collar portion of the orifice plate conveyor.

Orifice plate is positioned within the hole that sees upstream of the fluid flow within the pipe so that fluid flowing in the pipe will further ensure contact between the orifice plate conveyor and the orifice plate seal, and any upstream or downstream movement of the orifice plate conveyor will not cause the orifice plate seal to separate from the orifice plate conveyor or the orifice plate due to the angled outer circumferential portion of the plate seal member. orifice. Additionally, adjustment pins are provided in the lower chamber body and are designed to maintain contact with the raised collar portion of the orifice plate conveyor when the orifice plate conveyor is inserted into the pipe and the path of the orifice plate. fluid flow. Those adjustment pins allow the movement of the orifice plate conveyor and the orifice plate so that the orifice plate can be properly centered in the fluid flow path. This centering can be executed as long as the orifice plate is maintained within the pipe and, under conditions of high pressure fluid flow. Two or three pins may be provided, depending on the desired degree of flexibility in determining the current position of the orifice plate. In another embodiment, an L-port valve was provided to selectively enclose the first chamber of the second chamber, while an individual valve is selectively placeable in three positions. The valve is formed having an L-shape and is seated in a T-shaped valve seat, the valve seat separating the first chamber from the second chamber and the second chamber from the ambient air When the port is in the first position of the first and second chambers are placed in fluid communication, thereby equalizing the pressure within the first and second chambers. In the second position, the evacuation position, the fluid is evacuated from the second chamber, after the seal is replaced between the first and second chambers. Finally, in the third position, the stall position, both the passage between the first and second chambers. and second chamber, and the evacuation passage are blocked, thus ensuring the fluid-tight seal of both the first and second chambers and also, the seal between the first and second chambers since the individual valve is used, not it is possible the passage between the first and second chambers and the evacuation chamber are opened at the same time and, in this way a potentially harmful situation is prevented. Accordingly, it is an object of the invention to provide a double chamber orifice adjustment capable of measuring the flow of a fluid through a pipe in a highly accurate manner Another object of the invention is to provide a double chamber orifice adjustment improved that allows the simple and safe sealing and opening of a passage between a first and second chamber in the orifice adjustment A further object of the invention is to provide an improved double chamber orifice adjustment in which an eccentric valve plug is used to seal the passage between the first and second chambers in the orifice adjustment so that the fluid is maintained within the chamber. the suitable chamber and in the pipe Another object of the invention is to provide an orifice plate conveyor, the orifice plate which ensures that the fluid flows in a pipe is directed through the through hole formed in the orifice plate An object It is more of the present invention to provide an orifice plate seal with an angulated outer circumference such that during upstream and downstream movement of the plate seal member through a fluid flowing laterally in a pipe, the member Orifice plate seal does not deform, and no fluid passes around the outside of the orifice seal member. Yet another object of the invention is to provide adjustment pins for adjusting the placement of the orifice plate. Yet another object of the invention is to provide an improved double chamber orifice adjustment. , which has an orifice plate with pins to adjust the placement of the through hole formed in the orifice plate, the adjusting pins being adjustable while the orifice plate is in the proper placement within the pipe, and under high pressure fluid flow Another object of the invention is to provide an improved double chamber orifice adjustment employing a valve that is selectively disposable between at least a first position that provides fluid communication between the first and second chamber, a second position that provides evacuation of the second chamber and, a third position sealing the first and second chambers one of the other. Even other objects and advantages of the invention will be apparent from the specification and the drawings. Accordingly the invention comprises the construction features, combinations of elements, a provision of parts that will be exemplified in the constructions set forth in the following and the scope of the invention will be indicated in the claims BRIEF DESCRIPTION OF THE DRAWINGS For a more complete understanding of the invention, reference has been made to the following description taken in connection with the accompanying drawings, in which Fig. 1 is a front perspective view of a double chamber orifice adjustment constructed in accordance with with a first embodiment of the present invention Fig. 2 is a rear perspective view of the double chamber orifice adjustment constructed in accordance with the invention, Fig. 3 is an exploded perspective view of the double chamber orifice adjustment constructed in accordance with the invention; Fig. 4 is a cross-sectional view taken along line 4-4 of Fig. 1; Fig. 5 is a cross-sectional view taken along line 5-5 of Fig.1; Fig. 6 is a top plan view of the double chamber orifice constructed in accordance with the invention; FIG. 7 is a top plan view of an orifice plate seal member and an orifice plate constructed in accordance with the invention; Fig. 8 is a cross-sectional view taken along line 8-8 of Fig. 7; Fig. 9 is a side elevational view of the orifice plate seal member constructed in accordance with the invention; Fig. 10 is a perspective view of a plug fitting for seating an eccentric plug member constructed in accordance with the invention; Fig. 11 is a cross-sectional view taken along line 11-11 of Fig. 10; Fig. 12 is a side elevational view of an eccentric plug member constructed in accordance with the present invention; The Fig. 13 is a top plan view of the eccentric plug member constructed in accordance with the invention; Fig. 14 is a cross-sectional view taken along line 14-14 of Fig. 12; Fig. 15 is a perspective view of an L-port valve constructed in accordance with a second embodiment of the invention; Figs. 16A, 16B and 16C are schematic representations of the fluid flow when the port-L valve is positioned in each of the three positions; Fig. 17 is a perspective view of an orifice plate conveyor constructed in accordance with the present invention; Fig. 18 is a top plan view of the orifice plate conveyor constructed in accordance with the invention; Fig. 19 is a sectional view of the orifice plate adjusting pins constructed in accordance with the invention; Fig. 20 is a perspective view showing adjustment pins and orifice plate conveyor constructed in accordance with an alternative embodiment of the invention; Fig. 21 is a top plan view of the adjustment pins and orifice plate conveyor constructed in accordance with the alternative embodiment of the invention; Fig. 22 is a top plan view showing the adjustment pins constructed in accordance with another embodiment of the invention, Fig. 23 is an exploded perspective view of a safety locking mechanism constructed in accordance with the invention; Fig. 24 is a side elevational view of a spring loaded safety locking mechanism constructed in accordance with the invention in the unlocked position; Fig. 25 is a side elevation view of the spring loaded mechanism in the locked position; and Fig. 26 is a cross-sectional view of an orifice plate conveyor constructed in accordance with a second embodiment of the invention.

DETAILED DESCRIPTION OF THE INVENTION Reference is first made to Figs. 1 and 2 which illustrate a double chamber orifice adjustment 10 constructed in accordance with a first embodiment of the invention. The double chamber orifice adjustment 10 includes an inlet 21 for receiving fluid flow from a pipe. A flange 22 formed on a front side of the orifice fitting 10 around the inlet 21 is used to bolt the orifice fitting 10 to a section of the pipe, which is not shown. The flange 22 is further formed with bolt holes 23 that are included for that purpose. Alternatively, the flange 22 may include welded bezels (not shown) thus allowing the flange to be welded directly to the pipe. Additionally, a combination of weld and bolt holes using bolts (not shown) can also be employed to secure the fit to the pipe. An outlet 24 is positioned on a rear side of the double chamber orifice adjustment 10 opposite the flange 22, to which the pipe is attached and, which allows fluid to flow through the pipe and the orifice adjustment to exit of the adjustment, thus retaining the fluid towards the pipe. The double chamber orifice adjustment 10 is further formed with a first lower chamber 20 and a second upper chamber 40. As is known in the art the upper chamber 40 is fixed to the lower chamber by bolts 42, or the like. As will be further described below, the first lower chamber 20 comprises a portion of the double chamber orifice adjustment 10 which operates as part of the pipe and in which an orifice plate 65 (described below) is retained during use. , the second upper chamber 40 is a portion of the double chamber orifice adjustment toward which the orifice plate 65 moves when it is to be changed or repaired, thereby separating the orifice plate 65 from the fluid flow. The first lower chamber 20 is further formed with a bar positioning sleeve 25 which allows the double chamber orifice adjustment 10 to be supported by a bar or the like passed through and retained by the bar positioning sleeve 25.

Referring now to FIG. 3, the lower chamber 20 includes a support surface 26 having an opening 34 formed therein to support the upper chamber 40 in a meeting relationship. The bolt holes 27 are formed in the support surface 26 to receive the retaining bolts 42. A cavity 28 is formed in the lower chamber 20 and a groove 29 is formed to provide a passage between the cavity 28 and a flow passage 30 (Fig. 4) formed between the inlet 21 and the outlet 24. The opening 31b and the symmetrical outlet 31a (not shown) are positioned coaxially with each other on the sides of the lower chamber 20. A cover 32 is mounted towards the chamber lower 20 in the opening 31a and a collar retainer 33 is mounted towards the lower chamber 20 in the opening 31b Reference is again made to Fig. 3, which illustrates an exploded view of the double chamber orifice adjustment 10, wherein the first lower chamber 20 and the second upper chamber 40 have been separated one from the other. The first lower chamber 20 is provided with an eccentric plug member 80, a rotary movement bar 62 and adjusting pins 75, in addition to the previously described elements, each of which will be described in detail below. As shown in Figs. 4 and 6, the second upper chamber 40 is formed independent of the first lower chamber 20, although during use it is kept in close contact with it through the fixing of the second upper chamber on the first lower chamber by the use of adjusting bolts 42 Those chambers are positioned in relation to one another so that the communication path 35 is aligned in the two chambers and, a continuous communication path 35 is formed therethrough. With reference to FIGS. 4 and 6, the second upper chamber 40 is further formed of a body portion 48, the upper portion of which is sealed by a member of upper retention 46 and retention fit 46a, both of which are retained against body portion 48 by retaining bolts 47 to seal cavity 56 in the upper portion thereof Retaining bolts 47, upper retaining member 46 and the retention fit 46a are selectively removable to allow access to the cavity 56 of the second upper chamber 40 A plate movement bar 44 having gears 45 therein is rotatably mounted within the cavity 56 The movement bar of plate 44 can be rotated after coupling of the engagement stop 63 with parallel engagement grids 66 and 67 (Fig 2) of the orifice plate 60 (described in the following). sivo) in order to further move the orifice plate 60 in the vertical direction and also to move the orifice plate 60 out of the body portion 48 of the second upper chamber 40 when required, after the pins have been removed of retention 47, retention member 46 and retention setting 46a As shown in Figs. 2 and 3 and more specifically in Fig. 4, the second upper chamber 40 is formed with a cavity 56 therethrough. A pressure equalization channel 53 provides a fluid path between the cavity 56. and the exterior of the chamber 40. A channel 57 provides a path between the cavity 28 and the outside of the upper chamber 40. A third channel 58 also extends from the cavity 56 to the outside of the upper chamber 40 The equalizing valve of pressure 52 positioned within the channel 53 and is positionable between a first position in which the channel 53 and the channel 57 are closed towards each other to prevent the formation of a path of equalization between the first lower chamber 20 and the second chamber upper 40 are placed in fluid communication with each other through a pressure equalization path formed by channel 53 and channel 57 A sleeve 59 is seated in the channel sleeve The sleeve 59 is formed with an opening 61, an inlet 78 and a pressure evacuation path 55 A pressure evacuation valve 54 seated within the sleeve 59 is movable between a first position, wherein the pressure evacuation path 55 communicates with the inlet 78 which places the cavity 56 in fluid communication with the ambient air or other evacuation apparatus and a second inlet position of the block 78 where the pressure evacuation path 55 and the cavity 56 are not in communication with each other. fluid with the, ambient air or similar The eccentric plug member 80 is rotatably mounted within the cavity 28 between the cover 32 and the collar retainer 33. The eccentric plug member 80 is specifically designed to form a fluid-tight seal between the first lower chamber 20 and the second upper chamber 40 when placed in its sealing position. The eccentric plug member 80 includes a substantially C-shaped portion 84 having an inner face 83 and the outer circumferential face 81. The offset pivoted support bars 82a, 82b extend from the plug portion 84 from the end thereof. and allow eccentric rotation of the eccentric plug member 80 within the cavity 28 The support bars 82a, 82b are rotatably supported by the cover 32 and the collar retainer 33, respectively The eccentric plug member 80 is selectively rotatable from a first position, in which the eccentric plug member 80 forms a fluid-tight seal between the first lower chamber 20 and the second upper chamber 40 and, a second position in which the first chamber 20 and the second upper chamber 40 are placed in communication of fluid through a communication path 35 (see Fig. 4) In a preferred embodiment, the plug member Eccentric 80 is formed of a rubber-impermeabilized material to ensure a proper seal between the outer circumferential face 81 thereof and the radially engaging face 86 of the plug fitting 85 and, which does not require the use of grease or other lubricant to allow the proper movement of the same. Additionally, the grease or other sealing fluid is not required to ensure a fluid-tight seal. In order to ensure that the eccentric plug member 80 forms a fluid-tight seal, a plug adjustment 85 is mounted to the upper chamber 40 around of the communication path 35 for coupling the eccentric plug member 80 when the eccentric plug member 80 is in the first position As shown more specifically in FIGS. 10 and 11, the plug adjustment 85 includes a radial engagement face 86 formed around a groove 89 that is dimensioned to engage the outer circumferential face 81 of the eccentric plug member 80 as more explicitly shown in Figs. 12-14. Therefore, when the eccentric plug member is retained in its first position or sealing, the outer circumferential face 81 thereof is kept in contact with the radial coupling face 86 of the plug fitting 85, thereby forming a fluid tight seal therebetween The pressure from the fluid flowing through the first lower chamber 20 imparts a force on the inner face 83 of the eccentric plug member 80, further assisting in the maintenance of a fluid-tight seal The double chamber orifice plug 10 also includes an orifice plate conveyor 60 U na Orifice plate 63 is fixed to the orifice plate conveyor 60 through an orifice plate seal 70, which are shown in FIG. 3 as shown in FIG. further shows in Fig. 5, the orifice plate conveyor 60 further comprises parallel gear grids 66 and 67 that extend vertically along the outer edge of a surface of the orifice plate conveyor 60. During use, as shown in Fig. 6, the orifice plate conveyor 60 is positioned within the flow passage 30. The orifice plate conveyor 60 can be raised and lowered within the double chamber orifice adjustment 10 by the arrow 62 and the sprockets 63 which mesh with the parallel meshing grids 66 and 67 to vertically move the orifice plate conveyor 60 between a first position in the flow passage 30 and a second position in the cavity 56. The rotation of the arrow 62 in a first direction moves the orifice plate conveyor 60 through the communication path 35. After a predetermined amount of movement in the vertical direction, the gears 45, mounted in the second upper chamber 40, come into contact with the parallel gear grids 66 and 67 and rotate to continue e! upward movement of the orifice plate conveyor 60 and its associated components within the second upper chamber 40 so that the orifice plate conveyor 60 is completely positioned within the cavity 56. The orifice plate conveyor 60 is formed with a opening 71 through! same for receiving the orifice plate 65 and the orifice plate seal member 70 positioned between the orifice plate 65 and the orifice plate conveyor 60. As shown in FIG. further shows in Figs. 7-9, the orifice plate seal 70 engages the outer circumferential edge of the orifice plate 65. The orifice plate seal 70 is formed with a flat portion 74 that is held in contact with the orifice plate conveyor 60. The flat portion 74 extends toward a bed portion 79 to form a shoulder 79 therebetween. An angled outer circumferential edge 73 of the orifice plate seal 70 forms an obtuse angle? with the orifice plate conveyor 60. The orifice plate collar 64 includes an angled outer circumferential edge 88 that forms an acute angle with the orifice plate conveyor 60 that is complementary to the. angle? As shown more fully in Fig. 8, the orifice plate seal 70 is inserted into! orifice plate conveyor 60 after it has been inserted from the orifice plate 65 inside! Orifice plate seal 70. The circumference edge! Angled outer 73 of the orifice plate 70 engages the inner circumferential edge 88 of a collar portion 64 of the orifice plate conveyor 60, as shown in Figs. 17 and 18, anchoring the seal member 70 between shoulder 84 and e! outer circumferential edge 73 to form a substantially hermetic seal to! fluid between seal 70 and collar 64. As shown in Fig. 8, e! fluid flows in the direction of the arrow F through a pipe into which the double chamber orifice adjustment and indeed the plate conveyor have been inserted. orifice 60, the orifice plate 65 and the orifice seal 70. The orifice plate conveyor 60 transports the orifice plate 65 on the upstream side thereof. Thus, the fluid pressure against the orifice plate seal 70 compresses the seal 70 against the inner circumference of the collar 64 and assists in securing the fluid tight seal between the orifice plate seal 70 and the orifice plate 65, facilitating in this way all the fluid passes through the pipe to pass through the orifice plate 65. The angled outer circumferential edge 73 of the orifice plate seal 70 traps the angled outer circumferential edge 88 of the collar portion 64 so that the engagement of the orifice plate seal 70 with the collar portion 64 of the orifice plate conveyor 60 ensures that during insertion or removal of the orifice plate conveyor 60, a fluid-tight seal is maintained between the orifice plate 65 and the orifice plate conveyor 60, thereby ensuring that fluid does not spill around the edges of the orifice plate seal 70. The first lower chamber 20 it is further provided with adjusting pins 75 for adjusting the position of the orifice plate conveyor 60, the orifice plate 65, when in position within the first lower chamber 20 and under fluid flow conditions. As shown in Fig. 17, in a first embodiment, the adjustment pins 75 are placed against the outer edge of the collar portion 64 which is integrally formed with e! orifice plate conveyor 60. In this In the embodiment, two adjustment pins are provided. A ball plunger 77 positioned on top of the orifice plate conveyor 60 is also provided to impart a downward force therein. As shown in FIG 18, each of the pins 75 and the plunger 77 imparts a force on the orifice plate conveyor 60, those forces permitting good placement of the orifice plate conveyor 60 by fitting those pins 75, the collar portion 64 and the orifice plate conveyor 60 , together with the orifice plate 65 and the orifice plate seal 70 can move relative to the first lower chamber 20 This relative movement towards the first lower chamber 20 allows for good adjustment of the placement of! orifice plate conveyor 60, and thus allows an operator to properly center the orifice plate 65 within the fluid flow path As shown in FIG. 3 and FIG. 9, the adjustment pins 75 are retained within of the outer wall 120 of the first lower chamber 20 When the plugs 76, placed inside the internal wall 120 are removed from the first lower chamber 20, access can be had to the adjustment pins 75 from the outside of the chamber orifice adjustment double 10 while the orifice plate conveyor 60 and the associated equipment is within the fluid flow path. Therefore, those adjustments to ensure the centering of the opening formed in the orifice plate and, therefore, the proper functioning of the apparatus they can be made while the apparatus and the orifice plate 65 are in operation. The adjustment pins 75 are adjusted to move the collar portion 64 relative to the first lower chamber 20 and therefore the orifice plate conveyor 60 to the left, right and vertically. Therefore, those two adjustment pins 75, together with the downward force imparted by the ball plunger 77 allow adjustment of the placement of the orifice plate relative to the fluid flow as required. The use of the orifice plate conveyor 60, the orifice plate seal 70 and the orifice plate 65, the adjustment pins and any other associated equipment can also be used with an individual chamber orifice adjustment When it is desired that the first lower chamber 20 and second upper chamber 40 are placed in fluid communication with each other, eccentric plug member 80 can be rotated in the direction of arrow A (Fig. 6) towards a second position in which the outer circumferential face 81 is removed from contact with the radial coupling face 86 thereby opening the communication path 35 and placing the two chambers in fluid communication with each other, and thereby allowing the fluid to flow from the first lower chamber 20 into the second upper chamber 40. When in the second position, the eccentric plug member 80 also allows movement of the orifice plate conveyor. 60 through the communication path 35, as described below Fig. 23 illustrates a locking device to ensure that a plug member does not open inadvertently. Specifically, a tag 98 is attached to one side of the first lower chamber 20 adjacent to the deck 32 by means of bolts 100. is formed with at least two holes 102, 104 therein. A positioning catch 99 is fixed to a rotating support bar portion 82 that extends through the cover 32 and rotates therewith. The detent 99 is formed with a hole 106 therein. As shown, the rotatable support bar 82a can be rotated between a position in which the hole 106 of the detent 99 is aligned with the hole 104 of the bracket 98 and a second one. position in which e! orifice 106 of the gusset 99 is aligned with the hole 107 of the gusset 99 To secure the position of the plug 80, a padlock or the like could be passed through the hole 106 when it is aligned with the holes 102 or 104, thereby ensuring that the plug is not inadvertently rotated. Reference is now made to Figs. 24 and 25, where a automatic locking mechanism in accordance with another embodiment of the invention Similar numbers were used to indicate the similar structure A positioning arm 94 is mounted on the rotating support bar 82a to rotate therewith A positioning pin 96 is slidably disposed within a hole 108 through! A positioning pin retainer plate 93 is mounted on the positioning pin 96. A positioning spring 97 is placed around! pin 96 between the arm 94 and the retainer plate 93. The positioning pin 96 is biased downwardly as shown in Fig. 25 by the positioning spring 97. A positioning bracket 95, the positioning bracket, similar to the gusset 98, being provided with a first hole 110 and a second hole (not shown) formed therethrough. When the positioning arm 94 is placed in the closed position and the eccentric plug member 80 is positioned to seal the first and second chambers together, placing the pin 96 will be aligned with the first hole formed through the positioning grouser. The positioning pin 96 that is biased downward is automatically moved within the first hole 110 formed in the positioning gusset 95 by the positioning spring 97, thereby ensuring that the eccentric plug member 80 is in the proper place and, also ensuring that the eccentric plug member 80 is not inadvertently moved from this sealed position When the operator wishes to open the eccentric plug 80 and move it towards its second position, whereby the first lower chamber 20 and the second upper chamber 40 are placed in fluid communication, e! positioning pin 96 is raised from its place in the first hole 110 formed in the positioning bracket 95 against the biasing force of the positioning spring 97 and subsequently, the positioning arm is moved to a position so that the positioning pin 96 is aligned with the second hole formed in the positioning bracket 95. The positioning pin 96 is again bent downwards by the positioning spring 97 and moves automatically into the second hole formed in the positioning bracket 95, thereby locking the positioning arm 94 and also, the eccentric plug member 80 within its second open position. Since the movement of the positioning arm 94 requires an operator to move the positioning pin 96 against the deflecting force of the diverting spring 97, the positioning arm 94 will not move inadvertently. Additionally, since the positioning pin 96 is automatically deflected into the appropriate hole in the positioning bracket 95, there is no possibility that an operator does not employ the locking mechanism. In an alternative embodiment illustrated in Figs. 20 and 21, like elements indicated by the similar structure, the adjustment pins 75 are designed to pass through the slots 69 of a collar portion 68. The collar portion 68 operates similarly to the collar portion 64 before described, except for the slots 69 that allow the adjustment pins to come into contact with the orifice plate seal 70. In this embodiment, the adjustment pins 75 would displace the orifice plate seal 70 and, therefore, the plate. orifice 65 relative to the slotted collar portion 68 and the orifice plate conveyor 60. As shown in Fig. 21, the centering of the plate hole 65 would run as before, although only the orifice plate 65 and the orifice plate seal would move position. Although two adjustment pins are used, as described above, in the alternative embodiments, as shown in FIG. 22, it is possible to provide the first lower chamber with three adjustment pins 75 instead of the two provided above. Those three adjustment pins would interface with the collar portion 64 of the orifice plate conveyor 60 in the three positions as shown in Fig. 22 The ball piston 77 would still be provided to impart a downward force therein and, the Placement of the orifice plate 65 would be obtained through the use of the three pins 75. Additionally, as before, it would be possible to provide a slotted collar 68 with three slots 69 to accommodate the three set pins 75. Those pins would make contact with the stamp of orifice plate 70 and would operate as of annotation before. It is noted that the pressure equalization valve 52 and the pressure evacuation valve 55 are formed as separate entities., in. the alternative mode, it is possible to use an individual L-port valve 90 to control equalization and pressure evacuation. Port-L valve is shown in Fig 15 mounted in a second upper chamber 40 'as in Fig 26 If such a valve will be used, the valve includes three fluid passages substantially forming a T as shown in Figs 16A 16C A first passage 112 would extend from the first lower chamber 20 towards the valve position, a second passage 114 would extend from the second upper chamber 40 towards the valve position and, a third passage 116 would extend from the valve position towards the ambient air or from the evacuation area itself as shown in Figs. 16A, 16B and 16C and Fig. 26 by way of example. Specifically, as shown in Figs. 16A-16C, the trunk of the T would lead towards the first lower chamber 20, one of the two arms of the T would lead towards the second upper chamber 40 and the other of the arms of the T would lead towards the appropriate evacuation point. However, any formulation of the directions of the passages could be used. Therefore, the port-L valve 90 (Fig. 15) would be movable by means of use of a handle 92 or other mechanical means, between a first position in which the first lower chamber 20 was placed in communication. of fluid with the second upper chamber 40, thereby equalizing the pressure between the two chambers, a second position in which the second upper chamber 40 would be placed in fluid communication with the ambient air or the appropriate evacuation means forming from this a pressure evacuation path and a third position in which the first lower chamber 20 and the second upper chamber 40 would be sealed fluid-tight from each other and from the ambient air, thereby constituting a block position. It is further noted with reference to Figs. 15-16C, that the precise direction of each of the passages depends specifically the placement of the valve in the second upper chamber 40. The actual direction of any of those paths or where those paths lead can be altered without altering the effectiveness of this L-valve valve apparatus while all three positions are running. The three functions required by providing the appropriate trajectories During use, the double chamber orifice adjustment 10 would be inserted in line in the pipeline before the beginning of fluid flow through it. Therefore, as noted above, the entry 21 is connected to the pipe by means of the bolts inserted through the bolt holes 23 of the flange 22. In addition, the outlet 24 would be connected to the outlet pipe, thereby forming a continuous path from the pipe, through of the double chamber orifice adjustment 10 and then back to the pipe through the outlet 24 When it is assembling an Before the flow of fluid through the pipe is initiated, the orifice plate conveyor 60, which conveys the orifice plate 65 and the orifice plate seal 70, is placed within the lower chamber 20 and in FIG. the possible fluid flow path through the pipe, this position being shown in Fig. 4 and Fig. 5 Subsequently, at the beginning of! fluid flow through the pipe, the orifice plate 65 will already be in place, and can start the measurement of! fluid Note that it may be necessary, after the fluid flow starts, whether the orifice plate 65, or the orifice plate conveyor 60 were for shifting its position, to use the adjustment pins 75 in order to center the orifice plate 65 within the pipe as described above, and as will be described below. After the flow of fluid through the pipe has begun. , operations may be necessary while fluid flow continues These consist of the removal of the orifice plate to change the orifice plate, perform any other maintenance or, for some other reason To remove the orifice plate 60, it is necessary to move the eccentric plug member 80 from its first position, in which it forms a fluid-tight seal between the first chamber 20 and the second chamber 40 to its second position in which the first lower chamber 20 and the second upper chamber 40 are placed in fluid communication between them however, before the eccentric plug member is moved, it is necessary to open the pressure equalizing valve 52 to place the two chambers in fluid communication, thereby allowing the second upper chamber 40 to fill with the fluid and reach a pressure equal to that of the first lower chamber 20 After the pressure between the two chambers is equalized, the equalizing valve 52 is closed. Subsequently, the movement of the excentric plug member 80 is achieved through the rotation of the positioning arm 94 by removing the positioning pin 96 from the first hole in the positioning bracket 95, turning the positioning arm 90 °, or any other amount of rotation required based on the gear mechanisms and releasing the positioning pin within the second through hole in the positioning bracket 95 It should be noted that this procedure could also be executed without the positioning bracket, simply by moving the positioning arm 94 from a first position to a second position The movement of the plug 80 can be achieved without the positioning arm 94 by directly rotating the rotation support bar 82a. The movement of the positioning arm 94 in turn rotates the rotation support bar 82a to which the eccentric plug member is fixed. As shown in FIG. 4, the outer circumferential face 81 of the eccentric plug member 80 moves away from the radial coupling face 86 of the plug fitting 81, thereby opening the communication path 35 between the first chamber. lower 20 and second upper chamber 40, placing those chambers in fluid communication with each other. It should be noted that if the The apparatus is operated with the communication path 35 open, it is not necessary to execute those first two stages, since the cameras will be in fluid communication through the communication path 35 and, therefore, at the same pressure. Eccentric plug 80 will be in its second position Movement of the eccentric plug member 80 from its position to its second position also opens the communication path 35 to allow the orifice plate conveyor 60 and its components to pass through the same After the communication path 35 has been opened, the next required step is to move the orifice plate conveyor 60 vertically out of the fluid flow paths in the pipe. Because the eccentric plug 80 is eccentric and substantially in shape. of C, is positioned outside the travel path of the orifice plate conveyor 60 By rotating the rotational movement bar 62 in a predetermined direction, the gears 63, interdetermined with the grids 66 and 67 move the conveyor orifice plate 60 towards the communication path 35 The gear 63 mounted on the rotational movement bar 62 remains interconnected with the mesh grids 66 and 67 mounted on the orifice plate conveyor 60 When the rotational movement bar 62 is turned in the right direction, the gears 63 move the orifice plate conveyor 60 upwards by me contact with the meshing grids 66 and 67 This rotation is continued until the lower edge of the orifice plate conveyor 60 reaches the level of the rotational movement bars 62.

At this point, the orifice plate conveyor 60 will be contained within the communication path 35 and will be located between the first lower chamber 20 and the second upper chamber 40. In that moment, the gears 45 mounted on the movement bar of the plate 44 will contact the parallel grids 66 and 67 mounted on the orifice plate conveyor 60 The rotation of the bar of movement of the plate 44 moves the orifice plate conveyor 60 in the vertical position when the gears 45 interdeterate with the parallel engaging grids 66 and 67 to continue the movement of the orifice plate conveyor 60 within the cavity 56, the movement bar of the plate is rotated in the predetermined direction and, the gears 45 move the orifice plate conveyor 60 within the cavity 56 by interdental parallel meshing grids 66 and 67 This movement is continued until the entire Orifice plate conveyor 60 is contained within the second upper chamber 40 At that time, it is necessary to seal the second upper chamber 40 and remove the orifice plate conveyor 60 This is achieved by movement of the eccentric plug member 80 from its second position, wherein the communication path 35 is open and the first lower chamber 20 and the second upper chamber 40 are in fluid communication with each other, towards their first position, wherein the first lower chamber 20 and the second upper chamber 40 are sealed one of the other This movement is achieved by the opposite step required to move the eccentric plug member 80 from its first position to its second position, specifically by moving the pin from the second through hole in the positioning bracket 95, rotating the arm of placement in the opposite direction to that previously used and, replace the positioning pin 96 in the first orifice of the positioning bracket 95. This movement rotates the rotational support bar 82a in the proper direction, thereby replacing the outer circumferential face 81 of the eccentric plug member 80 against the radial engagement face 86 of the plug adjustment 85. It should be noted that at this time inserting grease or additional sealant material into the mechanism is not required to ensure an adequate seal. Due to the use of the eccentric plug member 80, and the specific shape thereof, the coupling between the outer circumferential face 81 and the radially engaging phase 86 is airtight and aided by the fluid pressure in the first lower chamber. against the internal face 83 of eccentric plug member 80. After the eccentric plug member 80 has been replaced, the first lower chamber 20 and the second upper chamber 40 will be sealed from each other, thus sealing the second chamber Top 40 of! Fluid flow through the pipe. However, at this time, the fluid pressure inside the second upper chamber 40 is greater than the atmospheric pressure and would be somewhat similar to the pressure imparted by the fluid flow through the pipe. Therefore, it is necessary to release the pressure in the second upper chamber 40 before opening the second upper chamber 40. Therefore, the pressure evacuation valve 54 is opened to allow the fluid to be evacuated from the second upper chamber 40. through the evacuation trajectory 55. It is observed that this trajectory of pressure evacuation through the pressure evacuation valve 54 can evacuate fluid within the second upper chamber 40 to the ambient air or, to another suitable waste facility, depending on the type of fluid that is transported in the pipe. After the opening of the pressure evacuation valve, the pressure inside the second upper chamber 40 will descend to the ambient pressure and, subsequently, the pressure evacuation valve 54 can be closed. At this time, it is possible to open the second chamber upper 40, because the chamber is no longer pressurized and subsequently removes the orifice plate conveyor 60. This opening is achieved as shown in Fig. 3 and Fig. 4, by removing the retaining bolts 47 from the upper retention member 46 and the retention fit 46a. After these bolts are removed, the upper retention member 46 and the retention fit 46a can be removed from the upper portion of the second upper chamber 40. Subsequently, to allow removal of the orifice plate conveyor 60, it is necessary rotate the plate moving bar 44 in the proper direction to urge the orifice plate conveyor 60 in the vertical direction and therefore out of the upper portion of the second upper chamber 40. After the orifice plate conveyor 60 is removed from the second upper chamber 40, it is possible to remove the orifice plate 65 and the orifice plate seal 70, in order to insert a new orifice plate seal 65, or to execute any required repairs on any of the parties. Therefore, by removing the orifice plate using the double chamber orifice adjustment 10, it is possible to remove such a plate without the requirement to interrupt the flow of fluid through the pipe. Then, after the repairs or replacement have been executed, the orifice plate 65 and the orifice plate seal 70 would be replaced in the orifice plate conveyor 60, to form a unit as described above. Subsequently, it is necessary to reinsert the orifice plate conveyor 60 into the path of fluid flow through the pipe. Therefore, the orifice plate conveyor 60, which contains the orifice plate 65 and the orifice plate seal 70 is inserted into the upper portion of the second upper chamber 40 until the parallel engaging grids 66 and 67 they come into contact with the gears 45 of the plate movement bar 44. Subsequently, the plate movement bar 44 is rotated in the proper direction, opposite to the predetermined direction described above, to move the orifice plate conveyor downwardly into the second upper chamber 40. This direction will be opposite to that previously used for move the orifice plate conveyor upwards. The movement will be achieved through the gears 45 which engage the parallel meshing grids 66 and 67 and drive the orifice plate conveyor 60 downwards in the vertical direction This movement is continued until the entire orifice plate conveyor 60 is contained within the second upper chamber 40. Subsequently, the upper retaining member 46 and the retention fit 46a are placed in their proper positions within the second upper chamber 40, and retaining bolts 47 are inserted and adjusted to secure upper retainer member 46 and retainer 46a within second upper chamber 40, thereby forming a fluid tight seal and sealing the second Upper chamber 40 of ambient air or the like Next, it is necessary to close the pressure evacuation valve 54 and then equalize the pressure between the second upper chamber 40 and the first lower chamber 20 before the communication path is opened 35 both, the pressure equalizing valve 52 must be opened, thereby placing the first lower chamber 20 and the second upper chamber 40 in fluid communication with each other through the pressure equalization path 35. The opening of this pressure equalization path allows fluid from the first lower chamber 20 to enter the second chamber by 40, matching this It should be noted that if the L-port valve of Fig 15 is used, the steps described with respect to the pressure evacuation valve 54 and the pressure equalization valve 52 would be operated in some way. differently, when the two chambers are to be sealed from each other, the port-L valve will be would place in a block position, as shown in Fig 16C. During the pressure evacuation stage, port L would be placed in an evacuation position as shown in Fig. 16B. This would allow the second upper chamber 40 to be in fluid communication with ambient air or other evacuation mechanisms. Finally, when the equalization step between the first lower chamber 20 and the second upper chamber 40 is executed, the port-L valve would be placed in an equalization position as shown in Fig 16A, thereby placing the first lower chamber 20 in fluid communication with second upper chamber 40. As noted above, e! The use of this port-L valve allows easy choice between the three positions and also ensures that the pressure equalization valve and the pressure equalization valve do not open at the same time, thus reducing the danger involved in the removal of the orifice plate conveyor 60 from the fluid flow of the pipe After the pressure between the two chambers has been equalized, the eccentric plug member 80 is opened, thereby opening the communication path 35 between the camera lower 20 and second upper chamber 40 The eccentric plug member 80 is opened through the same procedure as the one followed before to move the eccentric plug member 80 from its first position to its second position.

After the communication path 35 is opened, the plate movement bar 44 is rotated in the direction in which orifice plate conveyor 60 moves within the first lower chamber 20 This movement is continued until Parallel gear 66 and 67 are no longer interconnected with the gears 45 of the plate movement bar 44. After the orifice plate conveyor 60 moves in the communication path 35, the gears 63 interdeterate with the lower edge of the orifice plate conveyor 60 and parallel mesh gratings 66 and 67 Subsequently, the rotational movement bar 62 is moved in the proper direction to continue and complete the movement of the orifice plate conveyor 60 within the first lower chamber 20 and within the path of the fluid flow in the pipe After the downward movement of the orifice plate conveyor has been completed 60 by means of the rotational movement bar 62, the orifice plate conveyor 60 will be properly positioned within the fluid flow within the pipe. Subsequently, the eccentric plug member 80 is closed to seal the first lower chamber 20 and the second upper chamber 40 from each other. of this eccentric plug member 80 from its second position to its first position is executed as noted above when e! Orifice Plate Conveyor 60 Additionally, the pressure in the second chamber above must be released through! use of the valve pressure evacuation 54 as described above If the double chamber orifice adjustment 10 is operated with the eccentric plug member 80 in the second or open position, the last two stages of movement of the eccentric plug member 80 and the releasing the pressure in the second upper chamber 40 After the orifice plate conveyor 60 has been replaced in the fluid flow path of the fluid in the pipe, if necessary, the adjusting pins 75 can be employed to ensure that The orifice plate and the hole through it is centered inside the pipe As noted above during the description of those adjustment pins can provide either two or three adjustment pins These adjustment pins can be adjusted from the outside of the double chamber orifice adjustment 10 and, can be used to ensure that the orifice plate is properly centered on the tray fluid flow path as fluid continues to flow After the orifice plate has been properly centered, measurement of fluid flow in the pipeline can be continued Therefore, an improved double chamber orifice adjustment has been described, where an improved plug member is used, adjustment pins may be used to ensure proper centering of the orifice plate, an individual valve may be used for pressure equalization and evacuation and, provides an improved seal member on the orifice plates to ensure adequate measurement. Each of these improvements is beneficial for the general operation of the double chamber orifice plate, and ensures the most accurate measurement of fluid flow in a pipe measured with this medium. Due to its shape, the pressure of the fluid against the eccentric plug helps maintain the fluid-tight seal between the first and second chambers, and does not require additional grease or seal fluid to maintain a fluid-tight seal. Additionally, since the eccentric plug moves rotationally, as opposed to the lateral movement that is employed in the prior art, it is possible to easily move the plug to and from the first and second positions and the rotation can be engaged in any way to provide any additional mechanical advantage necessary to overcome the fluid pressure against the eccentric plug. An orifice plate is provided that specifically maintains its seal and is in fact aided by the pressure of the fluid flowing in the pipe. During the upward or downward movement of the orifice plate when it is being inserted inside or removed from the pipe, the seal is maintained airtight! fluid around the outer edge of the seal and, therefore, all the fluid flowing through the pipe is directed through the through hole formed in the orifice plate. It will therefore be noted that the objects previously established and those that become apparent from the previous description, they are efficiently achieved and, since certain changes can be made in the previous construction without departing from the spirit and scope of the invention, it is intended that all the material contained in the previous description or shown in the accompanying drawings be interpreted as illustrative and not in a limiting sense. It is also understood that the following claims are intended to cover all of the generic and specific features of the invention described herein and all the statements of the scope of the invention which, as a matter of the invention, are intended to be understood by the invention. language, can be said to be among these.

Claims (10)

1. CLAIMS 1 An orifice plate assembly for use with a double chamber orifice adjustment, comprising an orifice plate conveyor, the orifice plate conveyor being formed with a hole therethrough and having a formed collar portion integrally with the orifice plate conveyor, the collar portion surrounding the through hole, the collar portion having an inner circumferential portion, an orifice plate seal adapted to be received by the collar portion, formed of an elastic material , the orifice plate seal having at least one planar portion dimensioned for splicing the orifice plate conveyor within the collar portion, a bed extending within the through hole formed through the orifice plate conveyor, and an outer circumferential wall, at least a part of the outer circumferential wall being located at an angle obtained or towards the plane of the orifice plate conveyor, the circumference portion! Within the collar portion having an angle that is substantially complementary to the obtuse angle, the outer circumferential wall is dimensioned to maintain contact with the inner circumferential wall of the collar portion so that the inner circumferential portion catches the outer circumferential portion. , Y an orifice plate mounted on and retained by the orifice plate seal within the through hole formed in the orifice plate conveyor.
2. The assembly of claim 1, wherein the orifice plate is formed with a through hole formed therein.
3. The assembly of claim 1, wherein the collar portion is formed on a first side of the orifice plate conveyor, the orifice plate conveyor further comprises first and second parallel mesh grids formed on a second side of the conveyor of orifice plate.
4. The assembly of claim 1, further comprising a plurality of adjustment pins that contact an outer wall of the collar portion.
5. The assembly of claim 4, wherein the movement of the orifice plate conveyor, the orifice plate seal and the orifice plate can be achieved by adjusting the adjustment pins.
6. The assembly of claim 5, further comprising a ball plunger exerting a force towards the orifice plate.
7. 7. E! assembly of claim 1, further comprising a plurality of grooves formed in the collar portion.
8. The assembly of claim 7, further comprising a plurality of adjustment pins extending through the slots formed in the collar portion, the adjustment pins making contact with the orifice pin seal.
9. 9. The assembly of claim 8, wherein the movement of the orifice plate seal and the orifice plate can be achieved by adjusting the adjustment pins. The assembly of claim 9, further comprising a ball plunger exerting a force towards the orifice plate. SUMMARY An orifice plate assembly for use with a dual chamber orifice adjustment, comprising an orifice plate conveyor, the orifice plate conveyor being formed with a hole therethrough and having an integrally formed collar portion with the orifice plate conveyor, the collar portion surrounding the through hole, the collar portion having an inner circumferential portion; an orifice plate seal adapted to be received by the collar portion, formed of an elastic material, the orifice plate seal having at least one planar portion dimensioned for splicing the orifice plate conveyor within the collar portion, a bed extending within the through hole formed through the orifice plate conveyor, and an outer circumferential wall, at least a portion of the outer circumferential wall being located at an obtuse angle towards the plane of the plate conveyor orifice, the inner circumferential portion of the collar portion having an angle that is substantially complementary to the obtuse angle, the outer circumferential wall being dimensioned to maintain contact with the circumferential wall! internal of the collar portion so that the inner circumferential portion catches the outer circumferential portion; and an orifice plate mounted on and retained by the orifice plate seal within the through hole formed in the orifice plate conveyor.