CN202360956U - High-temperature pipeline sealing structure allowing axial expansion - Google Patents
High-temperature pipeline sealing structure allowing axial expansion Download PDFInfo
- Publication number
- CN202360956U CN202360956U CN 201120463265 CN201120463265U CN202360956U CN 202360956 U CN202360956 U CN 202360956U CN 201120463265 CN201120463265 CN 201120463265 CN 201120463265 U CN201120463265 U CN 201120463265U CN 202360956 U CN202360956 U CN 202360956U
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- pipeline
- pipe nipple
- pipe
- pipe joint
- safety cover
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Abstract
The utility model discloses a high-temperature pipeline sealing structure allowing axial expansion, which is characterized by comprising a pipeline, a protective cover, a pipe joint, a C-shaped metal sealing ring, a pipe nipple and another pipeline, wherein the pipeline and the pipe joint are welded into a whole; the pipeline and the pipe nipple are welded into a whole; the pipe joint is in small clearance fit with the pipe nipple; the pipe nipple is in large clearance fit with the protective cover; a sealed maze is formed between the pipe nipple and the protective cover; a stop structure and an external check lug boss are formed between the pipe joint and the pipe nipple; and the protective cover is arranged outside the pipe joint, the C-shaped metal sealing ring and the pipe nipple. The high-temperature pipeline sealing structure has the advantages that the sealing structure can reliably work for a long time at the temperature of 200 to 600 DEG C, the sealing reliability is improved, the sealing effect is better if the pressure difference is higher, the requirement of machining accuracy of the pipeline along the axial direction of the pipeline is reduced, and a complex pipeline shape brought about by compensation of thermal expansion can be canceled by allowing the axial movement of the joint.
Description
Technical field
The utility model relates to line seal structure field, particularly a kind of high temperature conduit sealing configuration that allows axial expansion.
Background technique
Conventional engines air system diameter is at the pipeline of Φ 20 ~ Φ 60, and working medium is the air of 200 ℃ ~ 600 ℃ of temperature, can't adopt rubber as sealing material.Therefore, engine high-temperature air system pipeline adopts flange connection, Quick Release Hoop to connect and be connected with sphere with the metal conical surface more.These pipeline jointing construction sealings are reliable, tolerable temperature is high, but do not possess thermal compensation and compensation ability is installed, and are very high to the pipeline requirement on machining accuracy.High temperature conduit must be carried out thermal compensation through the pipeline shape in order to possess the thermal compensation ability, and structure weight increases greatly.
Need to realize simplifying the pipeline shape, realize that seal request possesses thermal compensation and the line seal structure that compensation ability is installed simultaneously.
The model utility content
The purpose of the utility model is to possess thermal compensation and compensation ability is installed in order to realize, the spy provides a kind of high temperature conduit sealing configuration that allows axial expansion.
The utility model provides a kind of high temperature conduit sealing configuration that allows axial expansion, it is characterized in that: include pipeline 1, safety cover 2, pipe joint 3, C type metal o-ring 4, pipe nipple 5, pipeline 6;
Wherein: pipeline 1 is integrally welded with pipe joint 3, and pipeline 6 is integrally welded with pipe nipple 5, is little Spielpassung between pipe joint 3 and the pipe nipple 5; Be specially below 0.1 millimeter; Big Spielpassung is specially more than 0.5 millimeter between pipe nipple 5 and the safety cover 2, forms the sealing labyrinth between pipe nipple 5 and the safety cover 2; Be provided with chocking construction and visual examination boss between pipe joint 3 and the pipe nipple 5, safety cover 2 is installed in the outside of pipe joint 3, C type metal o-ring 4, pipe nipple 5.
Safety cover 2 and pipe joint 3 little Spielpassung are specially below 0.1 millimeter, and leave straightway.
Have the gap of 3 ~ 4 0.5mm on the safety cover 2, be used for safety cover 2 and install.
The high temperature conduit sealing configuration of the permission axial expansion that the utility model provides is provided with chocking construction and visual examination boss between pipe joint 3 and the pipe nipple 5, assurance C type metal o-ring 4 does not drop and is convenient to fit-up inspection.
The high temperature conduit sealing configuration of the permission axial expansion that the utility model provides, safety cover 2 are installed in the outside of pipe joint 3, C type metal o-ring 4, pipe nipple 5, prevent that when air leakage secondary from destroying.
The advantage of the utility model:
Through the radial fit structure between design pipe joint and the pipe nipple, formed and guaranteed to be used for the required annular space of radial seal C shape metal o-ring.Adopt the metallic material seal element to seal, can satisfy 200 ℃ ~ 600 ℃ conditions and work reliably and with long-term.Adopt C shape metal o-ring, be out of shape under certain pressure reduction condition through C shape metal o-ring, improved sealing reliability, the pressure reduction effect of obturaging more greatly is good more.In the exterior design of pipe joint and pipe nipple safety cover and labyrinth structure, prevent the secondary that brings under the accidental release situation and destroy.Axial cooperating structure through between design pipe joint and the pipe nipple can guarantee with pipe nipple axial interference not to take place in the C shape metal o-ring working procedure.Guaranteeing under the sealing situation that joint can move axially, and has reduced pipeline along the axial requirement on machining accuracy of pipeline in the allowed band of design, bringing the complicated pipelines shape for compensate for heat expansion through allowing joint to move axially to cancel.
Description of drawings
Fig. 1 is for allowing the high temperature conduit sealing configuration sectional view of axial expansion.
Embodiment
Embodiment 1
Present embodiment provides a kind of high temperature conduit sealing configuration that allows axial expansion, it is characterized in that: include pipeline 1, safety cover 2, pipe joint 3, C type metal o-ring 4, pipe nipple 5, pipeline 6;
Wherein: pipeline 1 is integrally welded with pipe joint 3, and pipeline 6 is integrally welded with pipe nipple 5, is little Spielpassung between pipe joint 3 and the pipe nipple 5; Be specially below 0.1 millimeter; Big Spielpassung is specially more than 0.5 millimeter between pipe nipple 5 and the safety cover 2, forms the sealing labyrinth between pipe nipple 5 and the safety cover 2; Be provided with chocking construction and visual examination boss between pipe joint 3 and the pipe nipple 5, safety cover 2 is installed in the outside of pipe joint 3, C type metal o-ring 4, pipe nipple 5.
Safety cover 2 and pipe joint 3 little Spielpassung are specially below 0.1 millimeter, and leave straightway.
Have the gap of 3 0.5mm on the safety cover 2, be used for safety cover 2 and install.
The high temperature conduit sealing configuration of the permission axial expansion that present embodiment provides is provided with chocking construction and visual examination boss between pipe joint 3 and the pipe nipple 5, assurance C type metal o-ring 4 does not drop and is convenient to fit-up inspection.
The high temperature conduit sealing configuration of the permission axial expansion that present embodiment provides, safety cover 2 are installed in the outside of pipe joint 3, C type metal o-ring 4, pipe nipple 5, prevent that when air leakage secondary from destroying.
Embodiment 2
Present embodiment provides a kind of high temperature conduit sealing configuration that allows axial expansion, it is characterized in that: include pipeline 1, safety cover 2, pipe joint 3, C type metal o-ring 4, pipe nipple 5, pipeline 6;
Wherein: pipeline 1 is integrally welded with pipe joint 3, and pipeline 6 is integrally welded with pipe nipple 5, is little Spielpassung between pipe joint 3 and the pipe nipple 5; Be specially below 0.1 millimeter; Big Spielpassung is specially more than 0.5 millimeter between pipe nipple 5 and the safety cover 2, forms the sealing labyrinth between pipe nipple 5 and the safety cover 2; Be provided with chocking construction and visual examination boss between pipe joint 3 and the pipe nipple 5, safety cover 2 is installed in the outside of pipe joint 3, C type metal o-ring 4, pipe nipple 5.
Safety cover 2 and pipe joint 3 little Spielpassung are specially below 0.1 millimeter, and leave straightway.
Have the gap of 4 0.5mm on the safety cover 2, be used for safety cover 2 and install.
The high temperature conduit sealing configuration of the permission axial expansion that present embodiment provides is provided with chocking construction and visual examination boss between pipe joint 3 and the pipe nipple 5, assurance C type metal o-ring 4 does not drop and is convenient to fit-up inspection.
The high temperature conduit sealing configuration of the permission axial expansion that present embodiment provides, safety cover 2 are installed in the outside of pipe joint 3, C type metal o-ring 4, pipe nipple 5, prevent that when air leakage secondary from destroying.
Claims (3)
1. a high temperature conduit sealing configuration that allows axial expansion is characterized in that: include pipeline (1), safety cover (2), pipe joint (3), C type metal o-ring (4), pipe nipple (5), pipeline (6);
Wherein: pipeline (1) is integrally welded with pipe joint (3); Pipeline (6) is integrally welded with pipe nipple (5); Between pipe joint (3) and the pipe nipple (5) is little Spielpassung, is specially below 0.1 millimeter big Spielpassung between pipe nipple (5) and the safety cover (2); Be specially more than 0.5 millimeter; Form the sealing labyrinth between pipe nipple (5) and the safety cover (2), be provided with chocking construction and visual examination boss between pipe joint (3) and the pipe nipple (5), safety cover (2) is installed in the outside of pipe joint (3), C type metal o-ring (4), pipe nipple (5).
2. according to the high temperature conduit sealing configuration of the said permission axial expansion of claim 1, it is characterized in that: safety cover (2) and the little Spielpassung of pipe joint (3) are specially below 0.1 millimeter, and leave straightway.
3. according to the high temperature conduit sealing configuration of the said permission axial expansion of claim 1, it is characterized in that: have the gap of 3 ~ 4 0.5mm on the safety cover (2), be used for safety cover (2) and install.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120463265 CN202360956U (en) | 2011-11-21 | 2011-11-21 | High-temperature pipeline sealing structure allowing axial expansion |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120463265 CN202360956U (en) | 2011-11-21 | 2011-11-21 | High-temperature pipeline sealing structure allowing axial expansion |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202360956U true CN202360956U (en) | 2012-08-01 |
Family
ID=46572142
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201120463265 Expired - Fee Related CN202360956U (en) | 2011-11-21 | 2011-11-21 | High-temperature pipeline sealing structure allowing axial expansion |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202360956U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103123025A (en) * | 2011-11-21 | 2013-05-29 | 中国航空工业集团公司沈阳发动机设计研究所 | High-temperature pipeline sealing structure capable of axial expansion |
| CN103557389A (en) * | 2013-11-14 | 2014-02-05 | 航天晨光股份有限公司 | Rotary joint |
| CN107990061A (en) * | 2017-11-22 | 2018-05-04 | 宜宾三江机械有限责任公司 | A kind of catheter flexibility connector |
| CN110758779A (en) * | 2019-09-27 | 2020-02-07 | 上海空间推进研究所 | Protection device suitable for spacecraft screwed pipe connecting nozzle component |
| CN113864562A (en) * | 2021-11-16 | 2021-12-31 | 北京美联桥科技集团有限公司 | Novel EGR bellows that has composite bed blast pipe structure suitable for high temperature |
-
2011
- 2011-11-21 CN CN 201120463265 patent/CN202360956U/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103123025A (en) * | 2011-11-21 | 2013-05-29 | 中国航空工业集团公司沈阳发动机设计研究所 | High-temperature pipeline sealing structure capable of axial expansion |
| CN103123025B (en) * | 2011-11-21 | 2016-04-06 | 中国航空工业集团公司沈阳发动机设计研究所 | A kind of high temperature conduit sealing configuration allowing axial expansion |
| CN103557389A (en) * | 2013-11-14 | 2014-02-05 | 航天晨光股份有限公司 | Rotary joint |
| CN103557389B (en) * | 2013-11-14 | 2015-07-01 | 航天晨光股份有限公司 | Rotary joint |
| CN107990061A (en) * | 2017-11-22 | 2018-05-04 | 宜宾三江机械有限责任公司 | A kind of catheter flexibility connector |
| CN110758779A (en) * | 2019-09-27 | 2020-02-07 | 上海空间推进研究所 | Protection device suitable for spacecraft screwed pipe connecting nozzle component |
| CN113864562A (en) * | 2021-11-16 | 2021-12-31 | 北京美联桥科技集团有限公司 | Novel EGR bellows that has composite bed blast pipe structure suitable for high temperature |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120801 Termination date: 20161121 |