CN104048124A - Redundant seal pipeline connector - Google Patents
Redundant seal pipeline connector Download PDFInfo
- Publication number
- CN104048124A CN104048124A CN201410228114.1A CN201410228114A CN104048124A CN 104048124 A CN104048124 A CN 104048124A CN 201410228114 A CN201410228114 A CN 201410228114A CN 104048124 A CN104048124 A CN 104048124A
- Authority
- CN
- China
- Prior art keywords
- sealing
- collar flange
- seal
- pipeline connector
- ring
- 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.)
- Granted
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
- F16L23/00—Flanged joints
- F16L23/02—Flanged joints the flanges being connected by members tensioned axially
- F16L23/032—Flanged joints the flanges being connected by members tensioned axially characterised by the shape or composition of the flanges
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- 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
- F16L23/00—Flanged joints
- F16L23/16—Flanged joints characterised by the sealing means
- F16L23/18—Flanged joints characterised by the sealing means the sealing means being rings
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17D—PIPE-LINE SYSTEMS; PIPE-LINES
- F17D5/00—Protection or supervision of installations
- F17D5/02—Preventing, monitoring, or locating loss
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M3/00—Investigating fluid-tightness of structures
- G01M3/02—Investigating fluid-tightness of structures by using fluid or vacuum
- G01M3/04—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point
- G01M3/06—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point by observing bubbles in a liquid pool
- G01M3/08—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point by observing bubbles in a liquid pool for pipes, cables or tubes; for pipe joints or seals; for valves; for welds
- G01M3/085—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point by observing bubbles in a liquid pool for pipes, cables or tubes; for pipe joints or seals; for valves; for welds for pipe joints or seals
-
- 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
- F16L2201/00—Special arrangements for pipe couplings
- F16L2201/30—Detecting leaks
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Joints With Pressure Members (AREA)
- Examining Or Testing Airtightness (AREA)
Abstract
The invention relates to a pipeline connector used for a filling system with higher sealing requirements, and aims to provide a redundant seal pipeline connector which has a simple structure, is reliable to seal, simple and convenient to operate, and can carry out the on-line detection on the sealing effect of the pipeline connector at the same time. The redundant seal pipeline connector comprises a seal receptacle, a seal cone, end surface sealing pieces, radial sealing pieces and fastening pieces, wherein the seal receptacle comprises a first axial bulge, a first annular flange and a first welding end, which are manufactured integrally; the seal cone comprises a second axial bulge, a second annular flange and a second welding end, which are manufactured integrally; the end surface of the second axial bulge is in butt joint with the end surface of the first annular flange; the end surface sealing pieces are positioned on the butt-joint matched surfaces; the front end of the second axial bulge is sleeved with the first annular flange; the radial sealing pieces are positioned in the radial matched surfaces; the fastening pieces are used for fixedly connecting the seal receptacle with the seal cone; a pressure measuring channel is arranged on the first annular flange; an air outlet end port of the pressure measuring channel is connected with a seal cap.
Description
Technical field
The present invention relates to a kind of pipe sealing structure, particularly relate to a kind of for the pipe joint to the higher loading system of seal request.
Background technique
The loading system of the inflammable and explosive or toxic gas of some cryogenic loading systems such as Vehicle Fueling Station and some normal temperature, sealing requirements for pipe interface place is all higher, in some cryogenic loading systems, cryogenic media is because its boiling temperature is lower, make its metallic material contacting and nonmetallic material easily produce larger shrinkage, the in the situation that of the shrinkage of piping material low temperature, cause the seal action of existing pipe sealing structure greatly to reduce and even can cause seal failure; In addition, in prior art, in the time that the sealing configuration place in sealing system produces leakage, adopt existing seal-leak detection arrangement, it is convenient not and rapid to detect, and also more complicated of the program of detection device of the prior art and detection, cannot detect online seal leakage.In addition, in confined space, small space, personnel cannot carry out or be inconvenient to carry out pipe joint sealing hunting leak.
Summary of the invention
The technical problem to be solved in the present invention be to provide a kind of simple in structure, seal reliable, easy and simple to handlely, simultaneously can carry out the online redundancy sealing pipeline connector detecting to the sealing effect of pipe joint.
Redundancy sealing pipeline connector of the present invention, comprise sealing seat, sealing cone, edge face sealing member, radial seal and fastening piece, described sealing seat comprises the first axial projection, the first collar flange and the first welding ends, described the first axial projection, described the first collar flange and described the first welding ends are integrated to be made, described sealing cone comprises the second axial projection, the second collar flange and the second welding ends, described the second axial projection, described the second collar flange and described the second welding ends are integrated to be made, described fastening piece is arranged on described the first collar flange and described the second collar flange, described sealing seat and described sealing cone achieve a fixed connection by described fastening piece, described the first welding ends is connected with one end of pipeline, described the second welding ends is connected with the other end of pipeline,
Described the second axial projection is divided into first step, second step, the 3rd step and the 4th step, the end face of described first step docks with the exterior edge face of described the first collar flange, described edge face sealing member is positioned at docking on fitting surface of described first step and described the first collar flange, described second step, the 3rd step and the 4th step are all socketed in described the first collar flange and described the first axial projection, described radial seal is between described the 3rd step and the radial fit face of described the first collar flange, described edge face sealing member, described radial seal, between described sealing seat and described sealing cone, form sealed cavity,
On described the first collar flange, be provided with measuring pressure passage, the inlet end of described measuring pressure passage is connected with described sealed cavity, the outlet side of described measuring pressure passage is positioned on the outer circumferential face of described the first collar flange, the outlet side of described measuring pressure passage is connected with sealed cap, and the lower end of described sealed cap extend in described measuring pressure passage.
Redundancy sealing pipeline connector of the present invention, offers the first ring-type seal groove on the end face of wherein said first step, described edge face sealing member is positioned at described the first ring-type seal groove.
Redundancy sealing pipeline connector of the present invention, wherein said edge face sealing member is T-shaped seal ring.
Redundancy sealing pipeline connector of the present invention, offers semi-spherical grooves on the outer circumferential face of wherein said the 4th step.
Redundancy sealing pipeline connector of the present invention, wherein on the right side of described radial seal and the fitting surface place that is positioned at described the 4th step and described the first collar flange be provided with the spacing back-up ring of the first radial seal.
Redundancy sealing pipeline connector of the present invention, wherein on the right side of the spacing back-up ring of described the first radial seal and the fitting surface place that is positioned at the 4th step and described the first collar flange be provided with the second spacing back-up ring, described the second spacing back-up ring is positioned at described semi-spherical grooves.
Redundancy sealing pipeline connector of the present invention, wherein said radial seal is spring tension seal ring.
Redundancy sealing pipeline connector of the present invention, wherein said sealed cap with described measuring pressure passage for being threaded.
Redundancy sealing pipeline connector difference from prior art of the present invention is that redundancy sealing pipeline connector of the present invention comprises sealing seat, sealing cone, edge face sealing member, radial seal and fastening piece, on the fitting surface of described sealing seat and described sealing cone, be provided with edge face sealing member and radial seal, owing to being also provided with edge face sealing member, when radial seal because shrinkage or unexpected the generation while leakage such as damaged, thereby prevent from causing due to radial seal the problem of seal failure by the redundancy seal action of edge face sealing member, described edge face sealing member, described radial seal, described the first axial raised inner peripheral surface and described the second axial raised outer circumferential face surround sealed cavity, in the time that end face seal place produces Leakage Gas, the gas leaking enters in sealed cavity, in sealed cavity, form certain air pressure, air pressure in sealed cavity will rise, because sealed cavity is connected with measuring pressure passage, the gas leaking will enter in measuring pressure passage, gas flows to the outlet side of measuring pressure passage by the inlet end of measuring pressure passage, the outlet side of measuring pressure passage is connected with sealed cap, in the time carrying out there is media flow in airtight test or measuring pressure passage in pipeline, the sealed cap of slowly dismantling, in the process of unscrewing sealed cap, notice checking whether detect interface has gas ejection, if cannot determine whether that by detecting interface leakage maybe cannot determine the effect of sealing, sealed cap all can be screwed down, then connect some external detection equipment, thereby can realize the online detection of the sealability to pipe joint.Redundancy sealing pipeline connector of the present invention can be applied in ultralow temperature loading system, and in the higher inflammable and explosive system of normal temperature or toxic gas loading system of some seal requests, the joint sealing that can be applied to individual layer pipeline, foam in adiabatic pipeline or the huge pipe line of vacuum multilayer, whole sealing device structure is simple, reliability is strong, simple to operate, be easy to realize commercialization.
The spacing back-up ring of the first radial seal described in redundancy sealing pipeline connector of the present invention is spacing for radial seal spring tension seal ring, described the second spacing back-up ring is fixed in described semi-spherical grooves, be used for the spacing of the spacing back-up ring of the first radial seal, thereby form effective radial seal effect.
Below in conjunction with accompanying drawing, redundancy sealing pipeline connector of the present invention is described further.
Brief description of the drawings
Fig. 1 is the erection drawing of redundancy sealing pipeline connector of the present invention;
Fig. 2 is the sectional drawing of redundancy sealing pipeline connector of the present invention;
Fig. 3 is the stereogram of sealing seat in redundancy sealing pipeline connector of the present invention;
Fig. 4 is the plan view of sealing cone in redundancy sealing pipeline connector of the present invention.
Embodiment
As Fig. 1, Fig. 2, shown in Fig. 3 and Fig. 4, redundancy sealing pipeline connector of the present invention comprises sealing seat 1, sealing cone 2, edge face sealing member 3, radial seal 4 and fastening piece 5, sealing seat 1 comprises the first axial projection 11, the first collar flange 12 and the first welding ends 13, the first axial projection 11, the first collar flange 12 and the first welding ends 13 are integrated to be made, sealing cone 2 comprises the second axial projection 21, the second collar flange 22 and the second welding ends 23, the second axial projection 21, the second collar flange 22 and the second welding ends 23 are integrated to be made, fastening piece 5 is arranged on the first collar flange 12 and the second collar flange 22, sealing seat 1 achieves a fixed connection by fastening piece 5 with sealing cone 2, fastening piece 5 has several, fastening piece 5 is arranged on the first collar flange 12 and the second collar flange 22, sealing seat 1 achieves a fixed connection by fastening piece 5 with sealing cone 2, fastening piece 5 is matching used bolt and nut, the quantity of matching used bolt and nut is eight groups, eight groups of matching used bolt and nuts are uniformly distributed, the quantity of matching used bolt and nut can regulate according to the size of connecting pipeline latus rectum, the first welding ends 13 is connected with one end of pipeline, the second welding ends 23 is connected with the other end of pipeline,
The second axial projection 21 is divided into first step 211, second step 212, the 3rd step 213 and the 4th step 214, the end face of first step 211 docks with the exterior edge face of the first collar flange 12, on the end face of first step 211, offer the first ring-type seal groove 2111, edge face sealing member 3 is positioned at the first ring-type seal groove 2111, and edge face sealing member 3 is T-shaped seal ring.In the time that sealing seat 1 is connected by fastening piece with sealing cone 2, T-shaped seal ring is subject to the effect of axial compression power, thereby the end contact with the first collar flange 12, thereby form effective end face seal, also radial seal is played to certain dustproof effect simultaneously, also can prevent the ice formation issues that sealing seat 1 causes with the condensed water causing due to cryogenic media on sealing cone 2 sagittal planes that match in filling process, in second step 212 is socketed on the first collar flange 12 and the first axial projection 11, radial seal 4 is positioned at the radial fit face of the 3rd step 213 and the first collar flange 12, radial seal 4 is spring tension seal ring.On the right side of radial seal 4 and be positioned at the 4th step 214 and the fitting surface place of the first collar flange 12 is provided with the spacing back-up ring 9 of the first radial seal.On the outer circumferential face of the 4th step 214, offer semi-spherical grooves 2141.On the right side of the spacing back-up ring 9 of the first radial seal and be positioned at the 4th step 214 and the fitting surface place of the first collar flange 12 is provided with the spacing back-up ring 10 of the second spacing back-up ring 10, the second and is positioned at semi-spherical grooves 2141.
Between edge face sealing member, radial seal, sealing seat and sealing cone, form sealed cavity 8, on the first collar flange 12, be provided with measuring pressure passage 6, the inlet end of measuring pressure passage 6 is connected with sealed cavity 8, the outlet side of measuring pressure passage 6 is positioned on the outer circumferential face of the first collar flange 12, the outlet side of measuring pressure passage 6 offers internal thread, and measuring pressure passage 6 has been threaded connection sealed cap 7.When end face seal goes wrong while causing Leakage Gas, the gas leaking will enter in sealed cavity 8, air pressure in sealed cavity 8 will rise, because sealed cavity 8 is connected with measuring pressure passage 6, the gas leaking will enter in measuring pressure passage 6, and gas flows to the outlet side of measuring pressure passage 6 by the inlet end of measuring pressure passage 6.
In the time detecting, the sealed cap 7 of slowly dismantling, unscrewing in the process of sealed cap 7, notice whether the outlet side that checks measuring pressure passage 6 has gas ejection, if cannot determine whether that by measuring pressure passage 6 leakage maybe cannot determine bubble-tight effect, sealed cap all can be screwed down, then on measuring pressure passage 6, connect detection device, for example rubber hose or other flexible pipes are connected with measuring pressure passage 6, the outlet of rubber hose or other flexible pipes is placed on to certain depth in water-soluble device, the mouth of pipe of observing flexible pipe has bubble-free generation, thereby realize the bubble-tight online detection to pipeline, can also be measuring pressure passage 6 Bonding pressure sensors, gather data by cable leading to control room, force value size that can the each pipe joint of remote centralized displaying, carries out acoustooptic alarm while reaching certain pressure value, thereby the performance of primary seal is radially monitored, in addition, also can connect gas concentration detector by measuring pressure passage 6, the data of collection to control room, are carried out acoustooptic alarm by cable leading while reaching normality, can remote centralized be monitored by the performance of each pipe interface sealing, and can realize more long-range monitoring to monitored data online, or measuring pressure passage 6 connecting pipelines, the pipeline of the measuring pressure passage of different pipe joints 6 is gathered, the gas leaking is concentrated discharge, processed, ensure the safety at pipe joint scene.
Above-described embodiment is described the preferred embodiment of the present invention; not scope of the present invention is limited; design under the prerequisite of spirit not departing from the present invention; various distortion and improvement that those of ordinary skill in the art make technological scheme of the present invention, all should fall in the definite protection domain of the claims in the present invention book.
Claims (8)
1. a redundancy sealing pipeline connector, it is characterized in that: comprise sealing seat (1), sealing cone (2), edge face sealing member (3), radial seal (4) and fastening piece (5), described sealing seat (1) comprises the first axial projection (11), the first collar flange (12) and the first welding ends (13), described the first axial projection (11), described the first collar flange (12) and described the first welding ends (13) are integrated to be made, described sealing cone (2) comprises the second axial projection (21), the second collar flange (22) and the second welding ends (23), described the second axial projection (21), described the second collar flange (22) and described the second welding ends (23) are integrated to be made, described fastening piece (5) is arranged on described the first collar flange (12) and described the second collar flange (22), described sealing seat (1) achieves a fixed connection by described fastening piece (5) with described sealing cone (2), described the first welding ends (13) is connected with one end of pipeline, described the second welding ends (23) is connected with the other end of pipeline,
Described the second axial projection (21) is divided into first step (211), second step (212), the 3rd step (213) and the 4th step (214), the end face of described first step (211) docks with the exterior edge face of described the first collar flange (12), described edge face sealing member (3) is positioned at docking on fitting surface of described first step (211) and described the first collar flange (12), described second step (212), the 3rd step (213) and the 4th step (214) are all socketed in described the first collar flange (12) and described the first axial projection (11), described radial seal (4) is positioned between described the 3rd step (213) and the radial fit face of described the first collar flange (12), described edge face sealing member (3), described radial seal (4), between described sealing seat (1) and described sealing cone (2), form sealed cavity (8),
On described the first collar flange (12), be provided with measuring pressure passage (6), the inlet end of described measuring pressure passage (6) is connected with described sealed cavity (8), the outlet side of described measuring pressure passage (6) is positioned on the outer circumferential face of described the first collar flange (12), the outlet side of described measuring pressure passage (6) is connected with sealed cap (7), and the lower end of described sealed cap (7) extend in described measuring pressure passage (6).
2. redundancy sealing pipeline connector according to claim 1, it is characterized in that: on the end face of described first step (211), offer the first ring-type seal groove (2111), described edge face sealing member (3) is positioned at described the first ring-type seal groove (2111).
3. redundancy sealing pipeline connector according to claim 2, is characterized in that: described edge face sealing member (3) is T-shaped seal ring.
4. redundancy sealing pipeline connector according to claim 3, is characterized in that: described the 4th step (214) outer circumferential face on offer semi-spherical grooves (2141).
5. redundancy sealing pipeline connector according to claim 4, is characterized in that: on the right side of described radial seal (4) and be positioned at described the 4th step (214) and be provided with the spacing back-up ring of the first radial seal (9) with the fitting surface place of described the first collar flange (12).
6. redundancy sealing pipeline connector according to claim 5, it is characterized in that: on the right side of the spacing back-up ring of described the first radial seal (9) and be positioned at the 4th step (214) and be provided with the second spacing back-up ring (10) with the fitting surface place of described the first collar flange (12), described the second spacing back-up ring (10) is positioned at described semi-spherical grooves (2141).
7. redundancy sealing pipeline connector according to claim 6, is characterized in that: described radial seal (4) is spring tension seal ring.
8. redundancy sealing pipeline connector according to claim 7, is characterized in that: described sealed cap (7) with described measuring pressure passage (6) for being threaded.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410228114.1A CN104048124B (en) | 2014-05-27 | 2014-05-27 | Redundant seal pipe joint |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410228114.1A CN104048124B (en) | 2014-05-27 | 2014-05-27 | Redundant seal pipe joint |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104048124A true CN104048124A (en) | 2014-09-17 |
| CN104048124B CN104048124B (en) | 2017-06-16 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410228114.1A Active CN104048124B (en) | 2014-05-27 | 2014-05-27 | Redundant seal pipe joint |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104048124B (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106499893A (en) * | 2016-12-28 | 2017-03-15 | 核动力运行研究所 | A kind of multiple-sealed flange with leakage monitoring function |
| CN106706226A (en) * | 2015-07-20 | 2017-05-24 | 深圳先进技术研究院 | Sealing performance detection system |
| CN107061891A (en) * | 2017-04-14 | 2017-08-18 | 常熟市海鑫船舶机械制造有限公司 | Steam pipework connecting flange device |
| CN109466805A (en) * | 2018-11-13 | 2019-03-15 | 北京宇航***工程研究所 | A kind of low impact space articulation sealing device of spacecraft |
| CN110006745A (en) * | 2019-04-29 | 2019-07-12 | 徐州鼎元机械有限公司 | A kind of pipeline testing pressure rapid sealing mechanism |
| CN110030166A (en) * | 2018-01-08 | 2019-07-19 | 弗兰德有限公司 | Housing member with micro-structural flange |
| CN110332393A (en) * | 2019-07-03 | 2019-10-15 | 北京航天发射技术研究所 | A kind of pipeline connector |
| CN111022645A (en) * | 2019-11-29 | 2020-04-17 | 西安航天动力研究所 | Static sealing structure suitable for high-pressure medium |
| CN112728249A (en) * | 2020-12-29 | 2021-04-30 | 中国航空工业集团公司西安飞机设计研究所 | Sleeve sealing structure |
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| EP1050699B1 (en) * | 1999-05-06 | 2005-05-25 | Borsig GmbH | Flange connection for tanks comprising at least two parts and protecting against leakage |
| US20070267868A1 (en) * | 2003-10-23 | 2007-11-22 | Peter Holzheu | Flanged Joint |
| CN200943788Y (en) * | 2006-08-28 | 2007-09-05 | 刘星海 | Impact-resistant high temperature-resistant elastic sealing member and flange matched with same |
| CN103363221A (en) * | 2012-03-31 | 2013-10-23 | 贵州森瑞管业有限公司 | Socket pipe allowing rapid detection on water leakage of bell socket |
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Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106706226A (en) * | 2015-07-20 | 2017-05-24 | 深圳先进技术研究院 | Sealing performance detection system |
| CN106499893A (en) * | 2016-12-28 | 2017-03-15 | 核动力运行研究所 | A kind of multiple-sealed flange with leakage monitoring function |
| CN107061891A (en) * | 2017-04-14 | 2017-08-18 | 常熟市海鑫船舶机械制造有限公司 | Steam pipework connecting flange device |
| CN110030166B (en) * | 2018-01-08 | 2021-03-09 | 弗兰德有限公司 | Housing component with microstructured flange |
| US11204090B2 (en) | 2018-01-08 | 2021-12-21 | Flender Gmbh | Housing component having a flange with microstructure |
| CN110030166A (en) * | 2018-01-08 | 2019-07-19 | 弗兰德有限公司 | Housing member with micro-structural flange |
| CN109466805A (en) * | 2018-11-13 | 2019-03-15 | 北京宇航***工程研究所 | A kind of low impact space articulation sealing device of spacecraft |
| CN110006745A (en) * | 2019-04-29 | 2019-07-12 | 徐州鼎元机械有限公司 | A kind of pipeline testing pressure rapid sealing mechanism |
| CN110006745B (en) * | 2019-04-29 | 2024-06-07 | 河南伯爵液压科技发展有限公司 | Quick sealing mechanism for pipeline pressure measurement |
| CN110332393B (en) * | 2019-07-03 | 2021-02-26 | 北京航天发射技术研究所 | Pipeline connector |
| CN110332393A (en) * | 2019-07-03 | 2019-10-15 | 北京航天发射技术研究所 | A kind of pipeline connector |
| CN111022645A (en) * | 2019-11-29 | 2020-04-17 | 西安航天动力研究所 | Static sealing structure suitable for high-pressure medium |
| CN111022645B (en) * | 2019-11-29 | 2021-10-19 | 西安航天动力研究所 | Static sealing structure suitable for high-pressure medium |
| CN112728249A (en) * | 2020-12-29 | 2021-04-30 | 中国航空工业集团公司西安飞机设计研究所 | Sleeve sealing structure |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104048124B (en) | 2017-06-16 |
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