WO2015044586A1 - Dispositif de raccord hydraulique et système de transfert de fluide utilisant ce dispositif - Google Patents
Dispositif de raccord hydraulique et système de transfert de fluide utilisant ce dispositif Download PDFInfo
- Publication number
- WO2015044586A1 WO2015044586A1 PCT/FR2014/052390 FR2014052390W WO2015044586A1 WO 2015044586 A1 WO2015044586 A1 WO 2015044586A1 FR 2014052390 W FR2014052390 W FR 2014052390W WO 2015044586 A1 WO2015044586 A1 WO 2015044586A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- seal
- rod
- fluid
- hydraulic
- transfer system
- Prior art date
Links
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
- F16L27/06—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 with special sealing means between the engaging surfaces
Definitions
- the present invention relates to the field of hydraulic connections between a part having a fluid distribution orifice and a tubular element traversed by the fluid. It also relates to the application of connections in a hydraulic fluid transfer device between a fixed reference system and a mobile reference system in translation relative to it, such that, inside a turbomachine, between a housing part of the machine and the moving part of a hydraulic actuator actuating an organ of the turbomachine.
- the problem of the invention lies in the context of the supply of a linear actuator in hydraulic fluid but is not limited to this application.
- a stationary housing element 1 of a machine such as a turbomachine, comprises a frustoconical IV ferrule and an axial extension 1C on which is mounted a linear actuator or hydraulic actuator 3.
- This is formed of a static portion 31, forming a piston, integral with the axial extension of the housing and a portion 32, forming a cylinder, movable in translation along the axis of the housing.
- the static and mobile parts delimit between them two chambers, A and B respectively, which are fed, one through an opening 35A of the chamber A, located on the side of the shell, and an opening 35B of the opposite chamber B.
- the movable portion of the jack is connected to a member, not shown, of the machine whose position is to be adjusted.
- the ferrule 1 comprises an opening 7A of selective fluid distribution connected by a hydraulic fluid supply duct to the opening 35A of the chamber A of the jack and an opening 7B of selective fluid distribution connected by a supply duct. hydraulic fluid at the opening of the chamber B of the cylinder.
- the distance between the fluid distribution openings of the shell and that of the cylinder chambers varies according to the position of the movable part 32, along the axis of the casing extension 1C.
- a way to adapt the length of Fluid supply ducts at the distance between the openings is to have telescopic tubular rods, 8A and 8B.
- the ends of the telescopic rods are connected, for example, to the respective apertures by means of nipple and nozzle type connection means known per se.
- Such a connection means or hydraulic connection 10 of the prior art is shown in Figure 2; It comprises a nozzle 12 at the end of a tubular rod which bears against an axially open nipple 14.
- the nipple is secured, by being screwed for example, a tubular housing arranged in the axis of the opening, not shown, and which is located on the shell or on the movable part of the cylinder. This accommodation is not shown here.
- the two elements of the connector, nozzle and nipple 12 and 14, are held together by a nut, not shown, taken between the normal axis bearing surface 12P, present on the nozzle and the threaded thread 14V on the nipple. 14. This method of assembly allows no angular movement between the part by which the fluid is distributed and the tubular rod which is connected thereto. He is rigid.
- the bracing phenomenon occurs in a mechanical system when the configuration thereof is such that the adhesion prevents any movement, regardless of the intensity of external mechanical actions.
- the applicant has set a goal of limiting or even eliminating the risk of blocking of the tubular rods during the displacement in translation of the movable part of the actuator or jack.
- the Applicant has set itself the more general objective of developing a hydraulic coupling allowing an angular deflection without the sealing of the circuit. be affected.
- the hydraulic coupling comprises a part with a hydraulic fluid passage and a tubular shaft with a nozzle, the tip of the rod being connected hydraulically to the orifice of the fluid passage, is characterized in that the orifice and the tip of the rod each comprise a surface portion shaped so as to allow an angular displacement between the workpiece and the rod, a seal being interposed between said two surface portions.
- one of said two surface portions comprises an annular groove, and said seal is housed in the annular groove.
- the seal advantageously comprises a contact ring, which is preferably made of rigid material, bearing against the other of said two surface portions and a resilient element is interposed between the bottom of the groove and the ring of rigid material.
- the contact ring of rigid material of the seal comprises a bearing surface on said other surface portion, which is of frustoconical shape.
- the groove is made in the surface portion of said fluid passage orifice.
- the device comprises a nut or other equivalent means for holding the tubular rod in the opening.
- This nut or other means holds the tip of the rod in the axis of the orifice when no stress is applied to the rod.
- an elastic means is disposed between ⁇ nut and the tip of the tubular shaft. More particularly, the elastic means is an O-ring forming a seal and is housed in an annular groove formed in the end of the tubular rod or in the surface portion of the nut vis-à-vis the endpiece . Both seals are pressurized by being crushed during assembly.
- the invention finds an advantageous application in a fluid transfer system between a fixed casing and a movable member in translation relative to the fixed casing.
- the system comprises a tubular rod with a fluidic connection device to one or the other of the housing and the movable member.
- the tubular shaft is an element of a telescopic device and the fluid transfer system comprises a hydraulic connection between the housing and a tubular shaft of the device on the one hand and between another tubular shaft of the device and the body mobile on the other hand.
- the invention finds an advantageous application when the mobile member in translation belongs to a linear actuator.
- the present application is directed to a turbomachine comprising at least one fluidic coupling device and / or a fluid transfer system according to the invention.
- the oil transfer function between a fixed reference carrying the feed and the movable part in translation of the actuator is achieved by means of telescopic tubes sliding one inside the other at the mercy of the fluctuation of the axial position of the the moving part of the actuator.
- the advantage of such a system is to ensure the transfer of hydraulic fluid irrespective of the axial position of the actuator.
- the system would be extremely sensitive to any misalignment between the fluid supply housing and the actuator housing which is avoided with hydraulic connections of the hydraulic system. 'invention.
- FIG. 1 shows in axial section a linear actuator mounted on a cylindrical housing element
- - Figure 2 shows a connection means of a tubular rod, according to the prior art with a nipple and a nozzle;
- - Figure 3 shows in axial section the hydraulic connection of the invention;
- FIG. 5 shows a variant of tubular rod with a tip added
- Figure 6 shows in axial section the linear actuator of Figure 1 with telescopic rods.
- a connector according to the invention is shown in axial section.
- the elements to be connected are a housing element IV and a tubular rod 13.
- the housing element is pierced with an orifice through which a hydraulic fluid is distributed from a pipe not visible on the figure and located upstream of the housing.
- a connecting member piece 111 is mounted on the housing so as to be integral therewith and has a channel terminated by a hole 111a, circular and of axis XX, in the extension of the housing opening.
- the rod 13, of which only the end is shown, has at this end a tip 131 which is housed in the part forming the connecting member 111, right of the orifice 111a.
- a nut 24 holds the end piece in its seat on the coupling element while being screwed here, it can however be made integral by any other means.
- the nut 24 surrounds the rod 13 by providing around it, as shown in the figure, an annular space forming a game whose maximum value is determined by the desired angular deflection for the rod.
- the coupling element in which the housing is formed is preferably provided with a threading made on a cylindrical extension around the bottom.
- the nut can be replaced for example by a ring also having a spherical internal bearing and locked with an elastic ring or cir-clip.
- the bottom of the housing around the orifice 111a of the connecting element 111 comprises a curved wall 111b, such as spherical, centered on the axis XX.
- An annular groove 111c centered on the axis XX is machined in this wall 11b.
- the groove 111c houses an O-ring seal 15 which is preferably of composite structure being formed of a contact ring 15a with a contact surface 15al.
- This contact surface is for example conical and its axis coincides with the axis XX, when the seal is in place.
- the contact ring 15a is for example of polygonal section in an axial plane.
- the seal comprises an elastic ring 15b made of elastomeric material. It exerts a restoring force against the contact ring 15a when it is compressed in the bottom of the groove.
- the contact ring is made of a more rigid material than the elastomeric material of the elastic ring 15b. This material is likely to provide a seal when the ring bears against its counterpart on the tip 131.
- the end piece 131 which can be integrally formed with the tubular rod, is generally spherical in shape with, on the side of the free end of the rod, a bearing surface 131a, coordinated with the contact surface 15a the sealing ring 15.
- This bearing surface here is frustoconical.
- the tip On the side of the rod, the tip has an annular groove 131b of axis coinciding with that of the rod for accommodating a resilient means 132 of elastomeric material forming an O-ring. This part of the surface of the nozzle cooperates with a bearing surface 24a of nut 24 which is preferably spherical like that of the tip.
- the tip 131 of the rod is introduced into the housing of the connecting element 111 on the part until it bears against the bearing surface 15al of the sealing ring.
- the nut surrounding the rod is then screwed onto the connecting element 111 so as to bear against the O-ring 132 disposed in the groove 131b of the nozzle.
- the two elastic elements, 15b and 132 are compressed by the nut 24 to a sufficient extent to ensure sealing of the fluid circuit, without however blocking any rotational movement of the rod relative to the workpiece. This Rotational movement is limited by the clearance around the rod by the nut, as indicated above and the pressure exerted by the nut.
- a seal To operate optimally and avoid premature damage, a seal must be compressed within a given range, depending on the type of seal used. During the design of the device, the position of the axial abutment of the nut is thus calculated so that the two joints are compressed in their operating range.
- the solution of the invention thus allows, as a function of the maximum compression ratio of the seal 15, an adjustment of the angular position of the rod relative to the part to which it is connected, without loss of sealing of the connected fluid circuit. .
- Figure 5 shows an exemplary embodiment of the embodiment of the tip.
- the latter 13 is made separately and bored and is attached to the rod 13 at its end. This comprises an axial abutment 13a 'against which bears the end piece which has been slid on the rod 13'.
- the tip is immobilized axially by a resilient ring 13'b or any other suitable means.
- the tip 13 as in the previous embodiment comprises a bearing surface 13 has conformed to receive the contact surface of the seal 15 sealing ring with the bottom of the opening and an annular groove 131'b for the seal 132 with the nut.
- FIG. 6 shows an example of application of the solution of the invention with a linear actuator 3 mounted on the axial extension 1C of the casing shell IV.
- the actuator is supplied with hydraulic fluid from the ferrule which comprises fluid distribution means 111.
- a single supply circuit has been shown.
- a system of telescopic rods 13 is mounted between a fluid distribution port 11a on the ferrule and one of the drive chambers of the actuator.
- the telescopic rods 13 are connected, one to the fluid distribution means 111 of the ferrule the other to one of the chambers by connectors of the invention that allow some angular displacement.
- the extension 1C of the shell undergoes angular deformation relative to the ferrule IV, its angular displacement is followed by the system of telescopic rods.
- the rods follow it without being subjected to a transverse force and do not undergo distortion.
- the angular travel does not affect the tightness of the supply circuit, thanks to the seals provided in the hydraulic connection.
- the invention makes it possible to compensate for the misalignment and to prevent the blockage and the ruin of the telescopic injection rod system, to transfer the high pressure oil (or not) from the fixed reference system to the mobile reference system in translation and to to be sealed under a predetermined maximum pressure.
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Actuator (AREA)
- Joints Allowing Movement (AREA)
Abstract
Description
Claims
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB1604749.0A GB2535896B (en) | 2013-09-24 | 2014-09-24 | Hydraulic connection device and fluid transfer system using said device |
US15/023,596 US10253910B2 (en) | 2013-09-24 | 2014-09-24 | Hydraulic connection device and fluid transfer system using said device |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR1359182A FR3011059B1 (fr) | 2013-09-24 | 2013-09-24 | Dispositif de raccord hydraulique et systeme de transfert de fluide utilisant ce dispositif |
FR1359182 | 2013-09-24 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2015044586A1 true WO2015044586A1 (fr) | 2015-04-02 |
Family
ID=49667414
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/FR2014/052390 WO2015044586A1 (fr) | 2013-09-24 | 2014-09-24 | Dispositif de raccord hydraulique et système de transfert de fluide utilisant ce dispositif |
Country Status (4)
Country | Link |
---|---|
US (1) | US10253910B2 (fr) |
FR (1) | FR3011059B1 (fr) |
GB (1) | GB2535896B (fr) |
WO (1) | WO2015044586A1 (fr) |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3874706A (en) * | 1971-10-15 | 1975-04-01 | Hydrotech Int Inc | Fluid actuated pipe connection |
EP0870965A1 (fr) * | 1997-04-08 | 1998-10-14 | Waterworks Technology Development Organization Co., Ltd. | Connexion téléscopique et pivotante de tuyaux |
US20040245777A1 (en) * | 2003-06-06 | 2004-12-09 | Smail Vila | Flexible coupling for gas conduits |
Family Cites Families (19)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2421691A (en) * | 1943-09-04 | 1947-06-03 | Lockheed Aircraft Corp | Universal joint |
US2931672A (en) * | 1956-06-05 | 1960-04-05 | George W Merritt | Flexible duct mounting |
US3454288A (en) * | 1967-12-22 | 1969-07-08 | Joseph J Mancusi Jr | Pressure-balanced swivel pipe coupling |
US3477748A (en) * | 1968-12-09 | 1969-11-11 | William B Tinsley | Swivel joint for wells being pumped |
US3663043A (en) * | 1970-01-02 | 1972-05-16 | George W Walton | Ball and socket joint for pipelines |
US4482171A (en) * | 1979-01-25 | 1984-11-13 | Campbell Joseph K | Pipe stress/strain neutralizers |
DE2923924C2 (de) * | 1979-06-13 | 1984-04-12 | Schott Glaswerke, 6500 Mainz | Auswinkelbare Dichtung |
US4556227A (en) * | 1984-10-01 | 1985-12-03 | Kabushiki Kaisha Suiken | Universal pipe joint assembly |
US4840409A (en) * | 1988-05-05 | 1989-06-20 | Taper-Lok Corporation | Swivel flow line connector |
US6752434B2 (en) * | 1999-06-15 | 2004-06-22 | Richard D. Cummins | Tube expansion joint |
US6237965B1 (en) * | 1999-07-27 | 2001-05-29 | Hsien-Wen Kuo | Leak-free flexible conduit |
US6905144B2 (en) * | 2003-07-02 | 2005-06-14 | Delaware Capital Formation | Spring-loaded ‘L’-shaped seal ring |
WO2007112533A1 (fr) * | 2006-04-05 | 2007-10-11 | Donald George Stewart | Colonne reglable pour tete d'arroseur |
GB0623480D0 (en) * | 2006-11-24 | 2007-01-03 | Airbus Uk Ltd | Aircraft fuel pipe coupling |
US8157295B2 (en) * | 2008-03-05 | 2012-04-17 | Hiltap Fittings, Ltd. | Articulating joint with injector port |
DE102008002926B3 (de) * | 2008-07-01 | 2010-05-20 | Weinhold, Karl, Dipl.-Ing. (FH) | Vorrichtung zum Verbinden von axialen Längenänderungen unterworfenen Rohrleitungen |
US20150285418A1 (en) * | 2014-04-02 | 2015-10-08 | Caterpillar Inc. | Joint for tube |
JP6438681B2 (ja) * | 2014-05-23 | 2018-12-19 | 株式会社水道技術開発機構 | 伸縮可撓継手 |
US20160298798A1 (en) * | 2015-04-07 | 2016-10-13 | Caterpillar Inc. | Assembly for Connecting a Tube |
-
2013
- 2013-09-24 FR FR1359182A patent/FR3011059B1/fr active Active
-
2014
- 2014-09-24 US US15/023,596 patent/US10253910B2/en active Active
- 2014-09-24 GB GB1604749.0A patent/GB2535896B/en active Active
- 2014-09-24 WO PCT/FR2014/052390 patent/WO2015044586A1/fr active Application Filing
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3874706A (en) * | 1971-10-15 | 1975-04-01 | Hydrotech Int Inc | Fluid actuated pipe connection |
EP0870965A1 (fr) * | 1997-04-08 | 1998-10-14 | Waterworks Technology Development Organization Co., Ltd. | Connexion téléscopique et pivotante de tuyaux |
US20040245777A1 (en) * | 2003-06-06 | 2004-12-09 | Smail Vila | Flexible coupling for gas conduits |
Also Published As
Publication number | Publication date |
---|---|
FR3011059B1 (fr) | 2016-05-27 |
GB2535896A (en) | 2016-08-31 |
GB201604749D0 (en) | 2016-05-04 |
US20160208970A1 (en) | 2016-07-21 |
FR3011059A1 (fr) | 2015-03-27 |
US10253910B2 (en) | 2019-04-09 |
GB2535896B (en) | 2020-05-20 |
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