CN110107756A - Connector and pipe connecting structure - Google Patents
Connector and pipe connecting structure Download PDFInfo
- Publication number
- CN110107756A CN110107756A CN201910468753.8A CN201910468753A CN110107756A CN 110107756 A CN110107756 A CN 110107756A CN 201910468753 A CN201910468753 A CN 201910468753A CN 110107756 A CN110107756 A CN 110107756A
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- China
- Prior art keywords
- pipe
- pipe connections
- section
- section pipe
- connector
- 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.)
- Pending
Links
- 239000012212 insulator Substances 0.000 claims abstract description 17
- 238000007789 sealing Methods 0.000 claims abstract description 4
- 239000011248 coating agent Substances 0.000 claims description 5
- 238000000576 coating method Methods 0.000 claims description 5
- 238000009413 insulation Methods 0.000 abstract description 14
- 230000008646 thermal stress Effects 0.000 abstract description 6
- 238000004519 manufacturing process Methods 0.000 abstract description 5
- 238000009434 installation Methods 0.000 abstract description 4
- 238000000034 method Methods 0.000 description 12
- 238000012546 transfer Methods 0.000 description 11
- 229910000831 Steel Inorganic materials 0.000 description 8
- 239000010959 steel Substances 0.000 description 8
- 238000010276 construction Methods 0.000 description 7
- 239000000463 material Substances 0.000 description 6
- 239000007789 gas Substances 0.000 description 4
- 230000035882 stress Effects 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- 238000004321 preservation Methods 0.000 description 3
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000005855 radiation Effects 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 229910001220 stainless steel Inorganic materials 0.000 description 2
- 239000010935 stainless steel Substances 0.000 description 2
- 241000233855 Orchidaceae Species 0.000 description 1
- 229910052786 argon Inorganic materials 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000011261 inert gas Substances 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
Classifications
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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
- F16L23/02—Flanged joints the flanges being connected by members tensioned axially
-
- 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
- F16L27/12—Adjustable joints, Joints allowing movement allowing substantial longitudinal adjustment or movement
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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
- F16L51/00—Expansion-compensation arrangements for pipe-lines
- F16L51/02—Expansion-compensation arrangements for pipe-lines making use of bellows or an expansible folded or corrugated tube
- F16L51/03—Expansion-compensation arrangements for pipe-lines making use of bellows or an expansible folded or corrugated tube comprising two or more bellows
-
- 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
- F16L59/00—Thermal insulation in general
- F16L59/06—Arrangements using an air layer or vacuum
- F16L59/065—Arrangements using an air layer or vacuum using vacuum
-
- 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
- F16L59/00—Thermal insulation in general
- F16L59/08—Means for preventing radiation, e.g. with metal foil
-
- 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
- F16L59/00—Thermal insulation in general
- F16L59/14—Arrangements for the insulation of pipes or pipe systems
- F16L59/16—Arrangements specially adapted to local requirements at flanges, junctions, valves or the like
- F16L59/168—Flexible insulating material or covers for flanges, junctions, valves or the like
Abstract
The present invention provides a kind of connector, including two section pipe connections, the two section pipe connections are fixedly connected, and the first thermal insulator is equipped between the two section pipe connections, and the two section pipe connections, which are offered, protrudes into the through-hole being connected with corresponding section pipe connections for the inner tube for saving pipe.The present invention also provides a kind of pipe connecting structures, it is managed including two sections, it further include above-mentioned connector, the two section pipes are connected by the connector, the outside of the two section pipe connections is equipped with the thermal sleeve of the two section pipe connections of sealing, the thermal sleeve, which is offered, protrudes into the aperture being connected with corresponding section pipe connections for the two section pipes, Guan Xianglian is saved with one of respectively in the both ends of the thermal sleeve, is equipped with evacuation passageway between the corresponding section pipe in wherein one end of the thermal sleeve.The present invention has the characteristics that structure is simple, is convenient for manufacture and installation, solves the problems, such as the insulation and thermal stress issues of high steam pipeline junction.
Description
Technical field
The present invention relates to utilidor more particularly to a kind of connectors and pipe connecting structure.
Background technique
High-temperature gas, liquid are transmitted very common in engineering using utilidor.Vacuum heat-insulated pipe is using very
The good thermo-insulation properties of rarefied air under empty condition, increase the thermal resistance of entire transmission pipeline insulation construction, to reduce high warm
The heat loss of hydraulic piping guarantees the thermal performance of conveyed high-temperature gas, liquid.
China started to introduce the product in steel jacket vacuum complex heat-preservation prefabricated direct-buried thermal insulation pipe road in 2000.Such as 2000
Year Tianjin Sang Laite energy-saving material Co., Ltd equipment Imported From German EMH Company FW- operation conveying technology limited liability company " is slided outside steel sleeve steel
Dynamic (roll type)-vacuumizes " insulation construction technology, and small-scale engineering test is carried out in Guangzhou.Beijing Hao Tenai, which is concentrated, to be supplied
Hot equipment Co., Ltd in December, 2001 and Hanoverian, Germany engineering consulting office sign technical collaboration agreement, introduce and protect outside steel
The prefabricated direct-buried duct products of pipe vacuum complex heat-preservation." the compound prefabricated direct-buried thermal insulation pipe of steel jacket vacuum of in March, 2006 publication
Road technical regulation ", standardize the technical parameter and production work of the prefabricated direct-buried duct products of China's steel jacket vacuum complex heat-preservation
Skill, the specification are concentrated by Chinese cities and towns heat supply association and Chinese Engineering Standardization urban heating committee orgaization, Beijing Hao Tenai
The participation of the associated specialist of heating equipment Co., Ltd and Harbin Institute of Technology is write.
Heat transfer research achievement is concentrated mainly on cryogenic technique under vacuum in domestic and foreign literature at present and high vacuum combines
The research achievement published in field, heat-transfer mechanism and thermal property for high-temperature pipe is less.In terms of patent application, phase
Pass field has some patents of invention and utility model patent, such as: CN2564837Y vacuum thermal-insulating pipeline, CN2643136Y vacuum
Vacuum thermal-insulating pipeline, CN102261542A vacuum heat insulation method and the argon gas that utilidor, CN102003596A inert gas are filled
The non-maintaining vacuum insulation hot fluids conveyance conduit of thermal-insulating method, CN103090156A, a kind of vacuum heat-preserving tube of CN202647073U
Road etc..The focus of these patents is concentrated mainly in the structure design of pipeline, does not give foot for the connecting portion of pipeline
Enough concerns.In fact, the heat loss of pipe connection portion position is far longer than pipeline itself, on the other hand, due to the band that expands with heat and contract with cold
The temperature stress effect come, the connecting portion of pipeline often become weak part of the pipeline in engineering is answered.
Summary of the invention
It is an object of the invention to overcome the defect of the prior art, a kind of connector and pipe connecting structure are provided, with
Solve the problems, such as the temperature stress problem of the insulation and pipeline junction of Petrochemical Pipe Joints under high temperature difference.
The present invention is implemented as follows:
The present invention provides a kind of connector, including two section pipe connections, the two section pipe connections are fixedly connected, two institutes
State section pipe connections between be equipped with the first thermal insulator, the two section pipe connections offer for save pipe inner tube protrude into it is corresponding
Save the connected through-hole of pipe connections.
Preferably, the connector further includes second heat-insulated between the two section pipe connections and the outer tube of corresponding section pipe
Part.
Preferably, the section pipe connections are flange.
Preferably, the two section pipe connections are bolted.
Preferably, first thermal insulator is heat insulating washer.
The present invention also provides a kind of pipe connecting structures, including two section pipes, further include above-mentioned connector, two sections
Pipe is connected by the connector, and the outside of the two section pipe connections is equipped with the collet of the two section pipe connections of sealing
Pipe, the thermal sleeve, which is offered, protrudes into the aperture being connected with corresponding section pipe connections, the collet for the two section pipes
Guan Xianglian is saved with one of respectively in the both ends of pipe, is equipped with and is taken out very between the corresponding section pipe in wherein one end of the thermal sleeve
Empty channel.
Preferably, the thermal sleeve is vacuum structure.
Preferably, the section pipe is telescopic joint.
Preferably, the telescopic joint is vacuum structure, and including inner corrugated pipe and outward corrugated tube, the two of the thermal sleeve
End is connected with one of outward corrugated tube respectively, is equipped with and takes out between the corresponding outward corrugated tube in wherein one end of the thermal sleeve
The inner wall of vacuum passage, the inner corrugated pipe and the corresponding section pipe connections connects, the outward corrugated tube and corresponding institute
It states and is connected between saving pipe connections by the second thermal insulator.
Preferably, being equipped with coating on the inner corrugated pipe and outward corrugated tube.
The invention has the following advantages:
Connector and pipe connecting structure provided by the invention solve the problems, such as high steam pipeline junction insulation and
Thermal stress issues, the present invention are thermally shielded using the method for extracting vacuum inside double-ply bellows, and pipeline is because expand with heat and contract with cold production
Raw thermal stress issues are eliminated using the big feature of bellows deformability, and flanged joint, flange are used between telescopic joint
Connecting portion is thermally shielded using the method for addition of vacuum thermal sleeve, between outward corrugated tube and flange, flange method adjacent thereto
Your beautiful writings is all made of low Heat Conduction Material and blocks heat bridge, and the present invention has the characteristics that structure is simple, is convenient for manufacture and installation.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
Some embodiments of invention for those of ordinary skill in the art without creative efforts, can be with
Other attached drawings are obtained according to these attached drawings.
Fig. 1 is telescopic joint vertical section schematic diagram provided in an embodiment of the present invention；
Fig. 2 is pipe connecting structure schematic diagram provided in an embodiment of the present invention.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts all other
Embodiment shall fall within the protection scope of the present invention.
Such as Fig. 1-Fig. 2, the embodiment of the present invention provides a kind of connector, including two section pipe connections 1, the two section Guan Lian
Fitting 1 is fixedly connected, and the first thermal insulator 8 is equipped between the two section pipe connections 1, and the two section pipe connections 1 offer confession
The inner tube of section pipe protrudes into the through-hole being connected with corresponding section pipe connections.Preferably, the connector further includes two sections
The second thermal insulator 9 between pipe connections 1 and the outer tube of corresponding section pipe.Preferably, the section pipe connections are flange, facilitate two
The installation between pipe is saved, convenient for construction.Connector and pipe connecting structure provided by the invention solve the connection of high steam pipeline
The insulation problem and thermal stress issues at place, section pipe of the invention using the method that vacuum is extracted inside double-ply bellows carry out every
Heat, pipeline is because the thermal stress issues for generation of expanding with heat and contract with cold are eliminated using the big feature of bellows deformability, telescopic joint
Between use flanged joint, flanged joint position is thermally shielded using the method for addition of vacuum thermal sleeve, outward corrugated tube and method
It is all made of low Heat Conduction Material between orchid, between flange flange adjacent thereto and blocks heat bridge.The present invention is simple with structure, is convenient for manufacture
The characteristics of with installation.
Preferably, the two section pipe connections are bolted at screw hole 2.
Preferably, first thermal insulator 8 and the second thermal insulator 9 are heat insulating washer, heat insulating washer is low heat conduction material
Material, can effectively block thermally conductive heat bridge.
The embodiment of the present invention also provides a kind of pipe connecting structure, including two sections pipes, further includes above-mentioned connector, and two
The section pipe is connected by the connector, the outsides of the two section pipe connections be equipped with the two section pipe connections of sealing every
Thermal sleeve 10, the thermal sleeve, which is offered, protrudes into the aperture being connected with corresponding section pipe connections 1 for the two section pipes, described
Guan Xianglian, the corresponding section pipe in wherein one end of the thermal sleeve 10 are saved with one of respectively in the both ends of thermal sleeve 10
Between be equipped with evacuation passageway 12.
Preferably, the thermal sleeve 10 is vacuum structure, thermal sleeve vacuum layer 11 be can effectively insulate heat.
Preferably, the section pipe is telescopic joint, common heat-insulating pipeline is replaced using telescopic joint in the junction of pipeline,
It can effectively solve the problems, such as the temperature stress of pipeline junction.
Preferably, the telescopic joint is vacuum structure, including inner corrugated pipe 3 and outward corrugated tube 5, inner corrugated pipe 3 and outer
Be pipeline vacuum layer 7 between bellows 5, the both ends of the thermal sleeve 10 are connected with one of outward corrugated tube 5 respectively, it is described every
Between the corresponding outward corrugated tube 5 in wherein one end of thermal sleeve 10 be equipped with evacuation passageway 12, by evacuation passageway 12 to every
The inner space that thermal sleeve 10 is formed with flange vacuumizes, the inner wall of the inner corrugated pipe 3 and the corresponding section pipe connections 1
Connection is connected between the outward corrugated tube 5 and the corresponding section pipe connections 1 by the second thermal insulator 9.
Preferably, the inner corrugated pipe is equipped with inner corrugated pipe coating 4, the outward corrugated tube is plated equipped with outward corrugated tube
Layer 6, can effectively radiation protection heat transfer.
The reason of causing heat transfer can be divided into three kinds: thermally conductive, convective heat transfer, radiant heat transfer.Pertain only to heat transfer or convection current
Diabatic process be simplest situation, and be related to buoyancy-driven flowing or the diabatic process of free convection, radiation compares
It is more complex.Since the thermal coefficient of steel is higher, the present invention has blocked steel by the first thermal insulator 8 and the second thermal insulator 9
All thermally conductive heat bridges, reduce conduction heat transfer；And it will be vacuumized between inner corrugated pipe 3 and outward corrugated tube 5, effectively reduce and stretch
The convective heat transfer of casing coupling duct section；Inner corrugated pipe coating 4 and outward corrugated tube coating 6, effectively reduce radiant heat transfer.Pass through vacuum
Thermal sleeve 10, and the inner space formed to thermal sleeve 10 with flange vacuumizes, the heat that jointing position is formed
Bridge is also separated, and heat insulation effect is expected preferable.
In the present invention, telescopic joint uses inside and outside two layers of corrugated stainless steel tubing, and bellows deformability is stronger, can effectively solve
Certainly pipeline expands with heat and contract with cold bring temperature stress problem.
A kind of connector and pipe connecting structure provided by the invention, utilidor telescopic joint use double-layer stainless steel ripple
Pipe construction, inside vacuumizes design.2-section pipe is by flanged joint, convenient for construction.Thermodynamic loss is larger at jointing
The shortcomings that, it devises the construction for separating heat bridge at three: 1) being blocked between two flanges using the first thermal insulator 8 made of high thermal resistance material
Heat bridge；2) junction of outward corrugated tube 5 and flange blocks heat bridge using the second thermal insulator 9 made of high heat rejection hot material；3)
Thermal sleeve 10 is arranged in flanged joint integral outer.Simple structure of the present invention, it is easy for construction.The thermal sleeve of telescopic joint and vacuum
10 can be prefabricated in the factory.Site operation mainly divides three steps: secondly the bolt of mounting flange connection first welds thermal sleeve
10, finally the inner space that thermal sleeve 10 is formed with flange is evacuated using reserved channel 12.
The present invention solves the problems, such as two: first is that vacuum good thermo-insulation properties solve high steam pipeline connection section
The insulation problem of point, second is that the thermal stress issues of high steam pipeline connecting node are solved using the telescopicing performance of bellows, this
Invention is suitable for high pressures, high-speed transfer channel and the connections such as high-temperature gas, liquid.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all in essence of the invention
Within mind and principle, any modification, equivalent replacement, improvement and so on be should all be included in the protection scope of the present invention.
Claims (10)
1. a kind of connector, including two section pipe connections, the two section pipe connections are fixedly connected, it is characterised in that: two institutes
State section pipe connections between be equipped with the first thermal insulator, the two section pipe connections offer for save pipe inner tube protrude into it is corresponding
Save the connected through-hole of pipe connections.
2. connector as described in claim 1, it is characterised in that: further include the two section pipe connections outer with corresponding section pipe
The second thermal insulator between pipe.
3. connector as described in claim 1, it is characterised in that: the section pipe connections are flange.
4. connector as described in claim 1, it is characterised in that: the two section pipe connections are bolted.
5. connector as described in claim 1, it is characterised in that: first thermal insulator is heat insulating washer.
6. a kind of pipe connecting structure, including two section pipes, it is characterised in that: further include as described in claim any one of 1-5
Connector, the two section pipes are connected by the connector, and the outsides of the two section pipe connections is equipped with two sections of sealing
The thermal sleeve of pipe connections, the thermal sleeve offer for the two section pipes protrude into corresponding section pipe connections be connected
Guan Xianglian is saved with one of respectively in aperture, the both ends of the thermal sleeve, and wherein one end of the thermal sleeve is corresponding
Section pipe between be equipped with evacuation passageway.
7. pipe connecting structure as claimed in claim 6, it is characterised in that: the thermal sleeve is vacuum structure.
8. pipe connecting structure as claimed in claim 6, it is characterised in that: the section pipe is telescopic joint.
9. pipe connecting structure as claimed in claim 8, it is characterised in that: the telescopic joint is vacuum structure, including interior wave
Line pipe and outward corrugated tube, the both ends of the thermal sleeve are connected with one of outward corrugated tube respectively, the thermal sleeve its
Evacuation passageway, the inner corrugated pipe and the corresponding section pipe connections are equipped between the corresponding outward corrugated tube in middle one end
Inner wall connection, is connected between the outward corrugated tube and the corresponding section pipe connections by the second thermal insulator.
10. pipe connecting structure as claimed in claim 9, it is characterised in that: be all provided on the inner corrugated pipe and outward corrugated tube
There is coating.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910468753.8A CN110107756A (en) | 2019-05-31 | 2019-05-31 | Connector and pipe connecting structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910468753.8A CN110107756A (en) | 2019-05-31 | 2019-05-31 | Connector and pipe connecting structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110107756A true CN110107756A (en) | 2019-08-09 |
Family
ID=67493315
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910468753.8A Pending CN110107756A (en) | 2019-05-31 | 2019-05-31 | Connector and pipe connecting structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110107756A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113931582A (en) * | 2021-09-16 | 2022-01-14 | 建湖县永维阀门钻件有限公司 | Riser joint protection device |
| GB2614885A (en) * | 2022-01-19 | 2023-07-26 | Airbus Operations Ltd | Coupling for insulated piping |
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| KR20180071457A (en) * | 2016-12-19 | 2018-06-28 | 대주이엔티 주식회사 | Vacuum insulation pipe, assembly and manufacturing method thereof |
| CN206487952U (en) * | 2017-01-16 | 2017-09-12 | 安徽恒达管业有限责任公司 | A kind of cryogenic delivery pipe road |
| CN210484909U (en) * | 2019-05-31 | 2020-05-08 | 中铁第四勘察设计院集团有限公司 | Connector and pipeline connecting structure |
| CN214305741U (en) * | 2021-01-08 | 2021-09-28 | 中国舰船研究设计中心 | Marine high-temperature high-pressure steam vacuum heat insulation pipeline connecting structure |
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| CN113931582A (en) * | 2021-09-16 | 2022-01-14 | 建湖县永维阀门钻件有限公司 | Riser joint protection device |
| GB2614885A (en) * | 2022-01-19 | 2023-07-26 | Airbus Operations Ltd | Coupling for insulated piping |
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