GB2045376A - Screw-threaded pipe connector device - Google Patents
Screw-threaded pipe connector device Download PDFInfo
- Publication number
- GB2045376A GB2045376A GB8010227A GB8010227A GB2045376A GB 2045376 A GB2045376 A GB 2045376A GB 8010227 A GB8010227 A GB 8010227A GB 8010227 A GB8010227 A GB 8010227A GB 2045376 A GB2045376 A GB 2045376A
- Authority
- GB
- United Kingdom
- Prior art keywords
- pipe
- screw
- intermediate body
- spherical
- sleeve
- 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.)
- Withdrawn
Links
- 230000037431 insertion Effects 0.000 claims description 10
- 238000003780 insertion Methods 0.000 claims description 10
- 238000007789 sealing Methods 0.000 abstract description 4
- 230000008878 coupling Effects 0.000 abstract 1
- 238000010168 coupling process Methods 0.000 abstract 1
- 238000005859 coupling reaction Methods 0.000 abstract 1
- 239000012530 fluid Substances 0.000 abstract 1
- 230000013011 mating Effects 0.000 abstract 1
- 238000004519 manufacturing process Methods 0.000 description 4
- 239000000853 adhesive Substances 0.000 description 2
- 230000001070 adhesive effect Effects 0.000 description 2
- 239000000446 fuel Substances 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 208000010392 Bone Fractures Diseases 0.000 description 1
- 206010017076 Fracture Diseases 0.000 description 1
- 238000004026 adhesive bonding Methods 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 230000000644 propagated effect Effects 0.000 description 1
- 229910000679 solder Inorganic materials 0.000 description 1
- 238000005476 soldering Methods 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L27/00—Adjustable joints; Joints allowing movement
- F16L27/02—Universal joints, i.e. with mechanical connection allowing angular movement or adjustment of the axes of the parts in any direction
- F16L27/04—Universal joints, i.e. with mechanical connection allowing angular movement or adjustment of the axes of the parts in any direction with partly-spherical engaging surfaces
- F16L27/047—Universal joints, i.e. with mechanical connection allowing angular movement or adjustment of the axes of the parts in any direction with partly-spherical engaging surfaces held in place by a screwed member having an internal spherical surface
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Joints With Pressure Members (AREA)
- Joints Allowing Movement (AREA)
Abstract
A screw-threaded pipe connector device comprises two mating, screw- threaded members (13, 17), each of which has an internal frustoconical joint surface (22, 24) tapering away from each other, preferably having the same cone angle. A spherical intermediate body (25) is located inside the two members (13, 17) and between the two frustoconical surfaces (22, 24) a pipe (11) to be connected by the device passing into one of the members (13) through an aperture (23) and being inserted into or through the intermediate body (25) in a fluid tight manner. The spherical intermediate body allows for a fluid- tight coupling with minimum assembly torques and also compensates for mis-alignment of the pipe (11) with the connector device. In another embodiment, the pipe may be slidable in the intermediate body and sealing is obtained by a separate sealing member accommodated in the intermediate body. <IMAGE>
Description
SPECIFICATION
Screw-threaded pipe connection device
The invention relates to a screw-threaded pipe connecting device for jointing a pipe to a connection or to another pipe or pipe element.
Such a connector consists of a screw-threaded sleeve member which is retainable on a similarly screw-threaded connector member by means of a screw-threaded collar and which has a sleeve neck portion through which the end of a pipe to be connected by the device passes.
Screw connector devices of this type are known, in which the screw-threaded sleeve is provided as a continuous cylindrical sleeve with female screw-threads at both ends, this screwthreaded sleeve being screwable by one screwthread in the region of its screw neck onto a male screw thread of a connector, e.g., a pipe, and the end of the pipe to be connected being screwable by a male screw-thread into the other female screw-thread of the screw-threaded sleeve present in the region of the sleeve neck. In this case the screw-threaded sleeve acts as an axial connector which has simultaneously to absort flexural moments and which centres and aligns the end of the pipe firmly with reference to the connector.For tension-free assembly, such screw connector devices necessitate the accurate observance of production tolerances, because it is only possible to compensate for mis-alignment or other inaccuracies by an intense stress loading of the screwthreaded sleeve and of the parts attached to it. Such stresses may be propagated in the system and also produce the disadvantage that the pipe may crack or the screw connection becomes leaky in the region of the joint.
It is the underlying aim of the invention to develop a screw connector device of the type outlined above, which enables tension-free assembly and permits an angular offset in the region of the screw connection. This angular offset allows a compensation of production tolerances, and which also ensures fluid-tightness of the pipe screw joint to a high degree even with small tightening torques.
According to the invention there is provided a screw-threaded pipe connector device, comprising a screw-threaded sleeve member which is retainable on a screw-threaded connector member by means of a screw threaded collar and which has a sleeve neck portion through which the end of a pipe to be connected by the device passes, wherein the sleeve neck portion has an internal, substantially frustoconical tensioning surface tapering towards an insertion aperture in the sleeve neck portion, the connector member having an internal, substantially frustoconical stop surface tapering axially in the direction opposite to the direction of taper of the internal tensioning surface of the sleeve neck portion and a centrally, axially hollow spherical intermediate body disposed in the space defined by the opposing internal surfaces of the sleeve member and of the connector member, the spherical intermediate
body abutting against the stop surface of the
connector member and against the axially
opposite tensioning surface of the sleeve neck
portion, the spherical intermediate body engaging
the end of the pipe to be connected by the device.
It is to be understood that in this context the
spherical intermediate body may be in an
independent component with reference to the end
of the pipe to be connected, or elide instead may
be connected to the pipe end from the outset or
even be integral therewith. In the case of a pipe
end inserted into or passed through the
intermediate body, a firm, and fluid-tight joint with the spherical intermediate body may be achieved for example by gluing or soldering. Instead of this, the pipe may also be inserted or passed through with a sliding fit, but not be firmly attached to the
spherical intermediate body, being slidable
relatively for the longitudinal adjustment. The
sealing is then effected for example by an O-ring
located between the pipe and the spherical intermediate body.
By the screw connector device according to the invention, a spherical part is obtained in the form of spherical intermediate body accommodating the pipe end, which is engaged on each side, by a part-spherical portion in each case, in the form of the screw-threaded sleeve with internal tensioning surface on the one hand and of the connector with
internal stop surface on the other hand. This screw joint presents the advantage compared to known screw connector devices, that an angular offset with tension-free assembly, and hence a compensation of production tolerances is possible.
To the same degree, of course, a compensation of
assembly inaccuracies is made possible, still with tension-free fixing. The pipe to be connected need
not necessarily be aligned or oriented with its pipe
axis in alignment with the connector. A further advantage is a high degree of fluid-tightness of the
pipe joint which is obtained even for small tightening torques. An integral, e.g., upset, configuration of the spherical intermediate body and pipe end is particularly suitable for fuel
injection lines of "Diesel" engines. High pressures can be sealed with only small screw forces and the
risk of fracture which hitherto existed is reduced.
An embodiment of the invention will now be
described more fully herein-below and with
reference to the accompanying drawings, in
which:
Figure 1 shows a side elevation, partly in axial
longitudinal section, of a screw connector device
with a part of a connecting member and of a pipe
attached thereto, and
Figure 2 shows a longitudinal section of the
separated individual components of the screw
connector device.
The screw connector device illustrated is
suitable for example for connecting the end 10 of
a pipe 1 1 to a relatively fixed connecting member
12 of any desired type. The member 12 may for
example be a flange, a pipe spigot, a housing
projection or the like, provided with a female
screw-thread 9. A constituent of the screw connector device is on the one hand somewhat check-nut-like screwthreaded sleeve member 13 with a screw neck 14 which is provided internally with a female screw-thread 15 and is screwable onto a male screwthread 16 of a somewhat spigot-like connector member 1 7. The connector member 17 carries, at its right-hand end as seen in Figures 1 and 2, a pipe spigot 18 which is provided with a male screwthread 1 9, by which it is screwable into the female screwthread 9 of the connecting member 12.Instead of this configuration, the parts 12 and 17 may be a soldered joint, e.g., with a pipe. The screwthreaded sleeve 15 further has a sleeve neck portion 20 penetrated internally by the end 10 of the pipe 11 to be connected and having an external tool engagement surface 21, which is constituted typically by a hexagon.
The sleeve neck portion 20 has an internal tensioning surface 22 which is substantially frustoconical and tapers towards the insertion orifice 23 of the sleeve neck portion 20.
In corresponding association, the connector 17 also has an internal stop surface 24 which is likewise substantially frustoconical and abuts axially oppositely to the internal tensioning surface 22 of the sleeve neck 20 with preferably substantially the same cone angle. The cone angle of the tensioning surface 22 and of the stop surface 24 is designated.
Axially between the screw threaded sleeve member 13 on the one hand and the connector member 17 on the other hand, within the interior space surrounded by the two, there is arranged spherical intermediate body 25, axially hollow in the centre, in the form of an intermediate sleeve.
The diameter of the spherical intermediate piece 25 is designated d. In the assembled state as shown by Figure 1 , the spherical intermediate body 25 abuts against the right-hand stop surface 24 of the connector member 27 on the one hand and against the axially opposite tensioning surface 22 of the sleeve neck portion 20 on the other hand. The spherical intermediate piece 25 contains an internal insertion aperture 26 for the end 10 of the pipe 11 to be connected and to be inserted in or passed through the intermediate body.The insertion aperture 26 is adjoined axially, by means of a radial annular collar or shoulder 27, which serves as an insertion stop for the end 10 of the pipe 11 to be inserted, by a passage bore 28 of somewhat smaller diameter, which is substantially equal to the inside diameter of the pipe 11 and the diameter of the axially aligned bore 29 in the connector member 17. The annular collar 27 may also be omitted. It is, however, useful in the case of a soldered or adhesive attachment of the spherical intermediate body 25 to the pipe 11, because in that case the solder or adhesive can be inserted axially between pipe end and annular collar 27. If the annular collar 27 is omitted, then the insertion aperture 26 continues smoothly as a through bore.
As may be seen particularly from Figure 2, the spherical intermediate body 25 is not constructed as an entire sphere, but is partly sleeve-like. At both axial terminal regions, to the left and right as seen in Figure 2, part-spherical zones 30 and 31 are provided on its external surface which have a common spherical radius d/2, whilst the annular centre region 32 lies at the mid-length and on the median axis 33 of the spherical intermediate body 25. The spherical intermediate body 25 is therefore produced, starting from a sphere of diameter d, by annular turning of the central portion between the spherical zones 30 and 31 at both ends. This is of course not obligatory. It is also possible to use, in relation to the exterior surface, a fully spherical component which is merely cut away in the region of the planes 34 and 35 at its two axial ends by the internal bore or passage.The spherical intermediate body 25 abuts by one past-spherical zone 31 against the confronting stop surface 24 of the connector member 17, and by the other past-spherical zone 30 against the axially opposite tensioning surface 22 of the sleeve neck 20.
The spherical intermediate body 25 in the illustrated embodiment is a fixed component of the pipe 11, to which it is soldered or glued. An integral conformation of the spherical intermediate piece 25 and of the pipe 11 is also possible, thus, a spherical intermediate body 25 may be upset on the pipe 11, which is particularly advantageous for fuel injection lines.
By the described configuration of the screw connector device, the possibility of an angular offset between the pipe 11 on the one hand and the remaining part of the screw connector device on the other hand is possible, with tension-free assembly. This permits the compensation of production tolerances. Moreover, even for a small tightening torque of the screwthreaded sleeve member 13, a reliably fluid-tight pipe joint is achieved. The outlay for this device is nevertheless relatively small. It is self-evident that when the screwthreaded sleeve member 13 is tightened on the connector member 17, the inner tensioning surface 22 of the screwthreaded sleeve member 13 firmly clamps the spherical intermediate body 25 and urges it firmly by its past-spherical zone 31 against the inner stop surface 24 of the connector member 17. Thus a secure and reliable seal is obtained in the region of the mutually contacting surfaces 22, 30 on the one hand and 31,24 on the other hand. Due to the soldered or glued joint, a firm and fluid-tight connection is also obtained in the region of the insertion aperture 26 between the end 10 of the pipe 11 and the spherical intermediate body 25.
In another embodiment of the invention, not shown, the pipe 11 is slidable relatively to the spherical intermediate body 25 for the purpose of length compensation. The sealing is then effected by an O-ring on the end 11 of the pipe 10, which is accommodated in an interior groove in the spherical intermediate body 25.
Claims (9)
1. A screw-threaded pipe connector device, comprising a screw-threaded sleeve member which is retainable on a screw-threaded connector member by means of a screw-threaded collar and which has a sleeve neck portion through with the end of a pipe to be connected by the device passes, wherein the sleeve neck portion has an internal, substantially frustoconical tensioning surface tapering towards an insertion aperture in the sleeve neck portion, the connector member having an internal, substantially frustoconical stop surface tapering axially in a direction opposite to the direction of taper of the internal tensioning surface of the sleeve neck portions and a centrally, axially hollow spherical intermediate body disposed in the space defined by the opposing internal surfaces of the sleeve member and of the connector member, the spherical intermediate body abutting against the stop surface of the connector member and against the axially opposite tensioning surface of the sleeve neck portion, the spherical intermediate body engaging the end of the pipe to be connected by the device.
2. A device according to Claim 1, wherein the spherical intermediate body has an internal insertion aperture for the end of the pipe to be connected and the pipe is inserted in or passes through said insertion aperture.
3. A device according to Claim 1, wherein the spherical intermediate body is formed on the end of the pipe to be connected.
4. A device according to any one of Claims 1 to 3, wherein the spherical intermediate body is
constructed as an intermediate sleeve member
with a central axially extending passage and
consists of two axial terminal regions in the form
of past-spherical zones with a common spherical
radius and an annular centre region located at the
mid-length and on the media axis of the intermediate sleeve member, one spherical zone
abutting against the stop surface of the connector
member and the other spherical zone abutting against the axially opposite tensioning surface of the sleeve neck portion.
5. A device according to any one of Claims 1 to 4, wherein the spherical intermediate body has an internal annular collar surface serving as a stop for the end of the pipe to be inserted.
6. A device according to any one of Claims 1 to 5, wherein the screwthreaded sleeve member is provided with an external tool engagement surface.
7. A device according to any one of Claims 1 to 6, wherein the exterior of the sleeve neck portion of the screw-threaded sleeve member is provided with a female screwthread and is screwable onto a male screwthread on the connector member.
8. A device according to any one of Claims 1 to 7, wherein the frustoconical surfaces of the sleeve neck portion and the connector member have the same cone angle.
9. A screw-threaded pipe connecting device, substantially as hereinbefore described and with reference to the accompanying drawings.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19792911919 DE2911919A1 (en) | 1979-03-27 | 1979-03-27 | SCREW CONNECTION DEVICE FOR IN PARTICULAR TUBES |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB2045376A true GB2045376A (en) | 1980-10-29 |
Family
ID=6066503
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB8010227A Withdrawn GB2045376A (en) | 1979-03-27 | 1980-03-26 | Screw-threaded pipe connector device |
Country Status (4)
| Country | Link |
|---|---|
| JP (1) | JPS55132483A (en) |
| DE (1) | DE2911919A1 (en) |
| FR (1) | FR2452654A1 (en) |
| GB (1) | GB2045376A (en) |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0053420A1 (en) * | 1980-12-01 | 1982-06-09 | SKF Industrial Trading & Development Co, B.V. | Method of attaching the sealing member of a threaded coupling to one end of high-pressure pipe |
| US4679828A (en) * | 1981-02-11 | 1987-07-14 | Permaswage S.A. | Connecting device for pipings, pipes and conduits |
| US5172939A (en) * | 1989-10-14 | 1992-12-22 | Usui Kokusai Sangyo Kaisha Ltd. | Connection structure for branch pipe in high-pressure fuel rail |
| US5328211A (en) * | 1992-11-12 | 1994-07-12 | Carrier Cororation | Crush tube fluid connection |
| US5350200A (en) * | 1994-01-10 | 1994-09-27 | General Electric Company | Tube coupling assembly |
| WO2009091793A1 (en) * | 2008-01-14 | 2009-07-23 | Millennium Industries, Inc. | Apparatus for coupling components of a fuel delivery system |
| US7837236B2 (en) * | 2006-05-18 | 2010-11-23 | Eifeler Maschinenbau Gmbh | Pipe connection having a reshaped pipe |
| CN1880824B (en) * | 2005-06-15 | 2011-11-16 | 通用汽车环球科技运作公司 | High-pressure fuel line end fitting and method |
| GB2521432A (en) * | 2013-12-19 | 2015-06-24 | Polypipe Plc | Pipe joint incorporating an insert |
| CN107482545A (en) * | 2016-06-08 | 2017-12-15 | 阿特克雷钢部件股份有限公司 | The pipeline body of super adaptation |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3511056A1 (en) * | 1985-03-27 | 1986-10-16 | Deere & Co European Office, 6800 Mannheim | Coupling endpiece of a pressure-medium carrier |
| DE4407306C1 (en) * | 1994-03-04 | 1995-09-07 | Guido Juergen Dipl Ing | Pressure pipe connection for fuel injection system |
| DE19927145A1 (en) * | 1999-06-15 | 2000-12-28 | Bosch Gmbh Robert | High pressure connection for a fuel injection system for internal combustion engines |
| DE10143740B4 (en) * | 2001-09-06 | 2005-07-21 | Siemens Ag | Pressure pipe connection |
| DE102005003519A1 (en) * | 2005-01-25 | 2006-08-03 | Benteler Automobiltechnik Gmbh | Connecting arrangement for pipes |
| DE102005045731B4 (en) * | 2005-09-23 | 2010-09-23 | Benteler Automobiltechnik Gmbh | Connecting arrangement for pipes |
| CH713200A1 (en) * | 2016-12-05 | 2018-06-15 | Liebherr Machines Bulle Sa | Internal combustion engine with common rail. |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB102345A (en) * | 1916-07-06 | 1916-11-30 | Arthur Ernest Lockley | Improvements in or relating to Pipe Joints. |
-
1979
- 1979-03-27 DE DE19792911919 patent/DE2911919A1/en not_active Withdrawn
-
1980
- 1980-03-25 FR FR8006622A patent/FR2452654A1/en active Pending
- 1980-03-26 JP JP3767480A patent/JPS55132483A/en active Pending
- 1980-03-26 GB GB8010227A patent/GB2045376A/en not_active Withdrawn
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0053420A1 (en) * | 1980-12-01 | 1982-06-09 | SKF Industrial Trading & Development Co, B.V. | Method of attaching the sealing member of a threaded coupling to one end of high-pressure pipe |
| US4679828A (en) * | 1981-02-11 | 1987-07-14 | Permaswage S.A. | Connecting device for pipings, pipes and conduits |
| US5172939A (en) * | 1989-10-14 | 1992-12-22 | Usui Kokusai Sangyo Kaisha Ltd. | Connection structure for branch pipe in high-pressure fuel rail |
| US5328211A (en) * | 1992-11-12 | 1994-07-12 | Carrier Cororation | Crush tube fluid connection |
| US5350200A (en) * | 1994-01-10 | 1994-09-27 | General Electric Company | Tube coupling assembly |
| CN1880824B (en) * | 2005-06-15 | 2011-11-16 | 通用汽车环球科技运作公司 | High-pressure fuel line end fitting and method |
| US7837236B2 (en) * | 2006-05-18 | 2010-11-23 | Eifeler Maschinenbau Gmbh | Pipe connection having a reshaped pipe |
| WO2009091793A1 (en) * | 2008-01-14 | 2009-07-23 | Millennium Industries, Inc. | Apparatus for coupling components of a fuel delivery system |
| US9157401B2 (en) | 2008-01-14 | 2015-10-13 | Millennium Industries | Apparatus for coupling components of a fuel delivery system |
| GB2521432A (en) * | 2013-12-19 | 2015-06-24 | Polypipe Plc | Pipe joint incorporating an insert |
| GB2521432B (en) * | 2013-12-19 | 2020-07-15 | Polypipe Ltd | Pipe joint incorporating an insert |
| CN107482545A (en) * | 2016-06-08 | 2017-12-15 | 阿特克雷钢部件股份有限公司 | The pipeline body of super adaptation |
| US10295094B2 (en) * | 2016-06-08 | 2019-05-21 | Atkore Steel Components, Inc. | Conduit body with super fitting |
| CN107482545B (en) * | 2016-06-08 | 2020-07-07 | 阿特克雷钢部件股份有限公司 | Super fit pipe body |
Also Published As
| Publication number | Publication date |
|---|---|
| DE2911919A1 (en) | 1980-10-02 |
| JPS55132483A (en) | 1980-10-15 |
| FR2452654A1 (en) | 1980-10-24 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| GB2045376A (en) | Screw-threaded pipe connector device | |
| US7032934B2 (en) | Hydraulic fitting | |
| CA2165634A1 (en) | Quick connect tube couplings | |
| US4252346A (en) | Connection for transition from a cutting ring joint or similar to a flange joint | |
| US5156421A (en) | Fluid-tight connectors for fluid-carrying pipe-lines | |
| US5380019A (en) | Spring seal | |
| US3848905A (en) | High pressure fitting | |
| US20110169261A1 (en) | Double-pipe Joint | |
| US4805944A (en) | Beaded tube coupling with end seal ring | |
| ES2055954T3 (en) | JOINT SYSTEM FOR THREADED JOINTS OF TUBES RESISTANT TO VERY HIGH PRESSURES. | |
| US7195283B2 (en) | Self-centering tubular connection | |
| US20070158942A1 (en) | Self-setting high pressure fitting | |
| US6991268B2 (en) | Pipe fitting having over-sized strengthened starter threads | |
| US4621843A (en) | Tube coupling | |
| US5573285A (en) | High-temperature, double-bead, tube-fitting assembly | |
| US3866958A (en) | Fluid tight conduit fastening system | |
| EP0195140B1 (en) | Improvements in or relating to tube couplings | |
| US4614370A (en) | Apparatus providing a weld-free joint for intersecting pipes or tubes within a conduit system | |
| US20080048440A1 (en) | Direct port connection for tubes | |
| US10704721B2 (en) | Coupler assembly that compensates for misalignment | |
| US4618170A (en) | Coupled pipes and sealed unions therefor | |
| GB2091364A (en) | Fluid-tight seal | |
| GB2032035A (en) | Pipes having a connecting end formation | |
| GB2581359A (en) | Common rail for gasoline engine | |
| GB2085992A (en) | Improvements in or relating to releasable tube couplings |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| WAP | Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1) |