CN206246840U - A kind of LNG Pipeline Crossing Programs tunnel headwall sealing section - Google Patents
A kind of LNG Pipeline Crossing Programs tunnel headwall sealing section Download PDFInfo
- Publication number
- CN206246840U CN206246840U CN201621393659.9U CN201621393659U CN206246840U CN 206246840 U CN206246840 U CN 206246840U CN 201621393659 U CN201621393659 U CN 201621393659U CN 206246840 U CN206246840 U CN 206246840U
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- CN
- China
- Prior art keywords
- connection ring
- tunnel
- flange
- cold
- pipeline
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- 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.)
- Expired - Fee Related
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Abstract
The utility model discloses a kind of LNG Pipeline Crossing Programs tunnel headwall sealing section, mainly it is made up of pipeline, connection ring, Cold-keeping Layer, axial direction pad, bolt, flange, gasket ring, expansion joint, built-in fitting and tunnel headwall, it is characterised in that：Cold-keeping Layer is provided with the surface of the pipeline；The connection ring is semi-circular cylindrical, and two pieces connection ring is bolted and compresses Cold-keeping Layer, and axial pad is provided with the junction of two pieces connection ring；The end of the connection ring is bolted with flange, and gasket ring is provided between the end of connection ring and flange；The two ends of the expansion joint are connected with flange and built-in fitting with welding manner respectively；The built-in fitting is fixed in tunnel headwall；The axially pad is in strip, and the material of expansion joint is stainless steel, and the material of Cold-keeping Layer is poly- isocyanuric acid fat.The utility model simple structure, it is easy to operate, can effectively realize the sealing to LNG pipelines and tunnel headwall junction.
Description
Technical field
The utility model is related to a kind of pipeline sealing device, particularly a kind of LNG Pipeline Crossing Programs tunnel headwall sealing section, category
In mechanical engineering technical field.
Background technology
Liquefied natural gas (LNG) refers to the liquid for condensing the gaseous natural gas cooling under normal pressure, is a kind of efficient
The energy of cleaning, consumption is huge.Pipeline is the main tool for conveying LNG, is largely used at home at present.Just because of the country
To the wilderness demand of natural gas, LNG pipelines spread all over the country, and these pipelines may need to pass through village, cities and towns, river, mountain range etc..
When LNG Pipeline Crossing Program mountain ranges, it is a kind of reliable method to build LNG techniques tunnel.Part LNG techniques tunnel is additionally operable to connection
Harbour and receiving station, it is generally long up to hundreds of meters, it is wide up to 11 meters up to 8 meters, generally it is disposed with discharging pipeline, muffler in tunnel
The utility line such as process pipelines and electricity, gas, fire-fighting such as line, cold insulation pipeloop.Because LNG techniques tunnel is one huge
Space, when LNG pipelines pass through tunnel, due to technique the need for generally build tunnel headwall and in tunnel at tunnel two ends
Inject the nitrogen of pressure-fired.
Often there is larger space and need encapsulation process in LNG pipelines with the junction of tunnel headwall.May use
Sealing technology is for example by junction joints cement, or welded seal part etc..Due to being filled with LNG's (- 162 degrees Celsius) in the duct
Starting stage, pipeline occurs shrinkage phenomenon, and when conveying LNG is stopped, line temperature is gradually risen to normal temperature, and pipeline will have again
Certain expansion, said process will cause the axial displacement of pipeline.In order to prevent rigid displacement to the damage of sealing structure, it is necessary to
Existing LNG pipeline through-walls sealing device is optimized or structure innovation.Therefore, one kind how is designed not expanded with heat and contract with cold by pipeline
It is current content and difficult point that the sealing section of influence becomes.
Utility model content
The purpose of this utility model is that, in order to overcome above-mentioned difficult point, spy proposes that a kind of LNG Pipeline Crossing Programs tunnel headwall is close
Feng Jie, realizes to the sealing at LNG pipelines and tunnel headwall.
To reach above-mentioned purpose, the technical scheme that the utility model solves the use of this technical problem is：A kind of LNG pipelines are worn
More tunnel headwall sealing section, mainly by pipeline, connection ring, axially Cold-keeping Layer, pad, bolt, flange, gasket ring, expansion joint, built-in fitting
Constituted with tunnel headwall, it is characterised in that：Cold-keeping Layer is provided with the surface of the pipeline；The connection ring is semi-circular cylindrical, two
Part connection ring is bolted and compresses Cold-keeping Layer, and axial pad is provided with the junction of two pieces connection ring；The connection ring
End be bolted with flange, be provided with gasket ring between the end of connection ring and flange；The two ends difference of the expansion joint
It is connected with welding manner with flange and built-in fitting；The built-in fitting is fixed in tunnel headwall.
A kind of described LNG Pipeline Crossing Programs tunnel headwall sealing section, it is characterised in that：The axially pad is in strip；Institute
The material for stating expansion joint is stainless steel；The material of the Cold-keeping Layer is poly- isocyanuric acid fat.
Compared with prior art, the utility model has an advantageous effect in that：(1) expansion joint is provided with the utility model,
The phenomenon for causing sealing device to fail so as to avoid forming larger stress during pipeline contract on cooling；(2) master of the present utility model
Want part to be connected by screw bolts or weld, install and convenient disassembly；(3) simple structure, without electronic component, it is adaptable to various
Field working conditions.
Brief description of the drawings
Fig. 1 is a kind of structural representation of LNG Pipeline Crossing Programs tunnel headwall sealing section of the utility model；
Fig. 2 is the side view of Fig. 1；
In figure：1. pipeline, 2. connection ring, 3. Cold-keeping Layer, 4. axial pad, 5. bolt, 6. flange, 7. gasket ring, 8. expansion joint,
9. built-in fitting, 10. tunnel headwall.
Specific embodiment
The utility model is described further below in conjunction with the accompanying drawings.
As depicted in figs. 1 and 2, a kind of LNG Pipeline Crossing Programs tunnel headwall sealing section, mainly by pipeline 1, connection ring 2, cold insulation
Layer 3, axial pad 4, bolt 5, flange 6, gasket ring 7, expansion joint 8, built-in fitting 9 and tunnel headwall 10 are constituted, it is characterised in that：Institute
The surface for stating pipeline 1 is provided with Cold-keeping Layer 3；The connection ring 2 is semi-circular cylindrical, and two pieces connection ring 2 is connected by bolt 5 and will protected
Cooling layer 3 is compressed, and axial pad 4 is provided with the junction of two pieces connection ring 2；The end of the connection ring 2 passes through bolt 5 with flange 6
Connection, is provided with gasket ring 7 between the end of connection ring 2 and flange 6；The two ends of the expansion joint 8 respectively with flange 6 and built-in fitting 9
Connected with welding manner；The built-in fitting 9 is fixed in tunnel headwall 10.
A kind of described LNG Pipeline Crossing Programs tunnel headwall sealing section, it is characterised in that：The axial pad 4 is in strip；Institute
The material for stating expansion joint 8 is stainless steel；The material of the Cold-keeping Layer 3 is poly- isocyanuric acid fat.
Claims (2)
1. a kind of LNG Pipeline Crossing Programs tunnel headwall sealing section, is mainly padded by pipeline (1), connection ring (2), Cold-keeping Layer (3), axial direction
(4), bolt (5), flange (6), gasket ring (7), expansion joint (8), built-in fitting (9) and tunnel headwall (10) composition, it is characterised in that：
Cold-keeping Layer (3) is provided with the surface of the pipeline (1)；The connection ring (2) is semi-circular cylindrical, and two pieces connection ring (2) is by spiral shell
Bolt (5) is connected and compresses Cold-keeping Layer (3), and axial pad (4) is provided with the junction of two pieces connection ring (2)；The connection ring (2)
End be connected by bolt (5) with flange (6), gasket ring (7) is provided between the end of connection ring (2) and flange (6)；It is described swollen
The two ends of swollen section (8) are connected with flange (6) and built-in fitting (9) with welding manner respectively；The built-in fitting (9) is fixed on tunnel end
In wall (10).
2. a kind of LNG Pipeline Crossing Programs tunnel headwall sealing section according to claim 1, it is characterised in that：The axially pad
(4) in strip；The material of the expansion joint (8) is stainless steel；The material of the Cold-keeping Layer (3) is poly- isocyanuric acid fat.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621393659.9U CN206246840U (en) | 2016-12-16 | 2016-12-16 | A kind of LNG Pipeline Crossing Programs tunnel headwall sealing section |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621393659.9U CN206246840U (en) | 2016-12-16 | 2016-12-16 | A kind of LNG Pipeline Crossing Programs tunnel headwall sealing section |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206246840U true CN206246840U (en) | 2017-06-13 |
Family
ID=59008434
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621393659.9U Expired - Fee Related CN206246840U (en) | 2016-12-16 | 2016-12-16 | A kind of LNG Pipeline Crossing Programs tunnel headwall sealing section |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206246840U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2018119725A1 (en) * | 2016-12-28 | 2018-07-05 | 乔治洛德方法研究和开发液化空气有限公司 | Sealing and rainproof device installed on pipeline and used for protecting through hole of pipeline |
| CN110953406A (en) * | 2019-12-31 | 2020-04-03 | 北京凯盛建材工程有限公司 | Maintenance and transformation method for existing waterproof sealing structure of wall bushing |
| CN112588207A (en) * | 2020-12-04 | 2021-04-02 | 中国成达工程有限公司 | Vertical radial flow reactor |
| CN113007452A (en) * | 2021-04-27 | 2021-06-22 | 招商局邮轮研究院(上海)有限公司 | LNG dual fuel pipeline heat-insulating watertight flexible cabin penetrating device |
-
2016
- 2016-12-16 CN CN201621393659.9U patent/CN206246840U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2018119725A1 (en) * | 2016-12-28 | 2018-07-05 | 乔治洛德方法研究和开发液化空气有限公司 | Sealing and rainproof device installed on pipeline and used for protecting through hole of pipeline |
| CN110953406A (en) * | 2019-12-31 | 2020-04-03 | 北京凯盛建材工程有限公司 | Maintenance and transformation method for existing waterproof sealing structure of wall bushing |
| CN112588207A (en) * | 2020-12-04 | 2021-04-02 | 中国成达工程有限公司 | Vertical radial flow reactor |
| CN112588207B (en) * | 2020-12-04 | 2022-09-16 | 中国成达工程有限公司 | Vertical radial flow reactor |
| CN113007452A (en) * | 2021-04-27 | 2021-06-22 | 招商局邮轮研究院(上海)有限公司 | LNG dual fuel pipeline heat-insulating watertight flexible cabin penetrating device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| 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: 20170613 Termination date: 20171216 |