CN201535411U - Ever frozen soil anti-corrosion heat-insulating pipeline joint coating - Google Patents
Ever frozen soil anti-corrosion heat-insulating pipeline joint coating Download PDFInfo
- Publication number
- CN201535411U CN201535411U CN2009202162645U CN200920216264U CN201535411U CN 201535411 U CN201535411 U CN 201535411U CN 2009202162645 U CN2009202162645 U CN 2009202162645U CN 200920216264 U CN200920216264 U CN 200920216264U CN 201535411 U CN201535411 U CN 201535411U
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- heat
- joint coating
- frozen soil
- pipeline joint
- insulating pipeline
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Abstract
The utility model relates to an ever frozen soil anti-corrosion heat-insulating pipeline joint coating used for oil gas delivery in severe cold districts. The joint coating is characterized in that an anti-corrosion layer (2), a polyurethane heat-insulating casing (3) and a sleeve (4) are circularly arranged on the outer walls of end heads (1) of two butted pipelines from inside to outside; and thermal shrinkage sacrifice sleeves (5) are arranged at the joints at two ends of the sleeve (4). The pipeline joint coating can ensure that the anti-corrosion layer is continuous and complete under the condition that the pipeline is operated at low temperature and prolongs the service life of the whole pipeline.
Description
Technical field
The utility model relates to the butt joint repaired mouth structure of oil field conveyance conduit, specifically a kind of Ever frozen soil anti-corrosion heat-insulating pipeline joint coating.
Background technique
Corrosion-resistanting insulation pipe follows human society to utilize the development of petroleum resources, and its product category, product structure are ripe day by day.The long distance pipeline both at home and abroad product type is divided into anticorrosion and insulation, and service condition is divided into low temperature and middle high temperature, and system of laying has built on stilts and buries ground.Long distance pipeline material commonly used has: three-decker polyethylene (3PE), urethane foam thermal insulation pipe etc.Material and process engineering be seriation, standardization all.Be characterized in: use the normal temperature material, repaired mouth under the normal temperature process conditions, and in normal temperature environment, use; External existing low temperature repaired mouth structure also is to be higher than more than-20 ℃ to use.Yet at the low construction area of ambient temperature, corrosion-resistanting insulation pipe will pass through the permafrost soil layer when ambient temperature is-45 ℃, guarantee that frozen soil does not subside, pipeline does not have distortion, and the repaired mouth structure under the existing normal temperature condition is difficult to meet the needs of.
The model utility content
The technical problems to be solved in the utility model provides a kind of Ever frozen soil anti-corrosion heat-insulating pipeline joint coating that can meet the demands of corrosion-resistant thermal insulation under low temperature environment, this joint coating on pipeline can guarantee that pipeline is under the cold operation condition, the anticorrosion insulating layer continuous whole improves the pipeline whole service life.
For achieving the above object, technical solution adopted in the utility model is: a kind of Ever frozen soil anti-corrosion heat-insulating pipeline joint coating, comprise two insulation pipe terminations, and apply anticorrosive coat, polyurethane heat-insulation shell, oversleeve at described butt joint two pipe head outer walls from the lining to outer shroud; Twine pyrocondensation at oversleeve two ends seam crossing and sacrifice cover.
The end structure of described insulation pipe is the composite structure that anticorrosive coat, thermal insulation layer and protective coating are formed; Anticorrosive coat is that epoxy primer twines pyrocondensation belt outward and forms; The heat-preservating shell material is a polyurethane; It is polyethylene that the cover material is sacrificed in oversleeve and pyrocondensation.
The beneficial effects of the utility model are: owing to adopt above-mentioned technical pattern, ring applies anticorrosive coat, heat-preservating shell, oversleeve and the pyrocondensation sacrifice cover made from cryogenic material on the insulation pipe wall that composite material is made, make the benefit button identical with the composite pipe body, have effects such as anti-low temperature shrinkage, high temperature heat expansion, anticorrosion and insulation, be applicable to the requirement of composite corrosionproof thermal insulating pipeline road, permafrost area repaired mouth, have the characteristics of features simple structure, easy construction, reliable performance simultaneously.
Description of drawings
Fig. 1 is the Ever frozen soil anti-corrosion heat-insulating pipeline joint coating structural representation.
Cover is sacrificed in 1-insulation pipe termination 2-anticorrosive coat 3-heat-preservating shell 4-oversleeve 5-pyrocondensation among the figure
Embodiment
The utility model is described in further detail below in conjunction with accompanying drawing:
Shown in accompanying drawing 1, this Ever frozen soil anti-corrosion heat-insulating pipeline joint coating comprises two insulation pipe terminations 1, anticorrosive coat 2, heat-preservating shell 3, oversleeve 4 and pyrocondensation sacrifice cover 5, wherein the structure of Dui Jie two pipe heads 1 is the composite structure that anticorrosive coat 2, heat-preservating shell 3 and protective coating are formed, its outer wall is around twined the anticorrosive coat 2 that pyrocondensation belt forms outward by epoxy primer, the skin of anticorrosive coat 2 is a polyurethane heat-insulation shell 3, the skin of heat-preservating shell 3 be the oversleeve 4 of polyethylene material as protective coating, twine the polyethylene pyrocondensations at oversleeve 4 two ends seam crossings and sacrifice cover 5.When this Ever frozen soil anti-corrosion heat-insulating pipeline joint coating is made at first to the 1 position derusting by sandblasting of insulation pipe termination, remove surface corrosion, be coated with epoxy primer, twine with pyrocondensation belt, baking, make anticorrosive coat 2, detain the polyurethane heat-insulation shell of making in advance 3 again, and smear binder at seam crossing, overlap polyethylene oversleeve 4 then, merge with the thermal insulation pipe calor innatus, twine the polyethylene pyrocondensation at seam crossing at last and sacrifice cover 5, the baking back is bonding with thermal insulation pipe body and polyethylene oversleeve 4.This joint coating on pipeline is that ring applies anticorrosive coat 2, heat-preservating shell 3, oversleeve 4 and the pyrocondensation sacrifice cover made from cryogenic material 5 on the insulation pipe wall that composite material is made, make repaired mouth identical with the composite pipe body, have effects such as anti-low temperature shrinkage, high temperature heat expansion, anticorrosion and insulation, be applicable to the requirement of composite corrosionproof thermal insulating pipeline road, permafrost area repaired mouth, have the characteristics of features simple structure, easy construction, reliable performance simultaneously.
Claims (5)
1. an Ever frozen soil anti-corrosion heat-insulating pipeline joint coating comprises two insulation pipe terminations (1), it is characterized in that: two pipe heads (1) outer wall of butt joint applies anticorrosive coat (2), polyurethane heat-insulation shell (3), oversleeve (4) from the lining to outer shroud; Twine pyrocondensation at oversleeve (4) two ends seam crossing and sacrifice cover (5).
2. Ever frozen soil anti-corrosion heat-insulating pipeline joint coating according to claim 1 is characterized in that: the structure of insulation pipe termination (1) is the composite structure that anticorrosive coat, heat-preservating shell and protective coating are formed.
3. Ever frozen soil anti-corrosion heat-insulating pipeline joint coating according to claim 1 is characterized in that: anticorrosive coat (2) forms for epoxy primer twines pyrocondensation belt outward.
4. Ever frozen soil anti-corrosion heat-insulating pipeline joint coating according to claim 1 is characterized in that: heat-preservating shell (3) material is a polyurethane.
5. Ever frozen soil anti-corrosion heat-insulating pipeline joint coating according to claim 1 is characterized in that: it is polyethylene that cover (5) material is sacrificed in oversleeve (4) and pyrocondensation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202162645U CN201535411U (en) | 2009-09-21 | 2009-09-21 | Ever frozen soil anti-corrosion heat-insulating pipeline joint coating |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202162645U CN201535411U (en) | 2009-09-21 | 2009-09-21 | Ever frozen soil anti-corrosion heat-insulating pipeline joint coating |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201535411U true CN201535411U (en) | 2010-07-28 |
Family
ID=42535190
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009202162645U Expired - Fee Related CN201535411U (en) | 2009-09-21 | 2009-09-21 | Ever frozen soil anti-corrosion heat-insulating pipeline joint coating |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201535411U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103062575A (en) * | 2013-01-24 | 2013-04-24 | 林泊成 | Heat-insulation joint coating process for underground oil and gas pipelines in high and cold regions |
| CN103604026A (en) * | 2013-11-06 | 2014-02-26 | 北京豪特耐管道设备有限公司 | Novel construction method for heat insulation of heat-insulating pipeline joints |
| CN103899839A (en) * | 2012-12-28 | 2014-07-02 | 中国石油天然气股份有限公司 | Method and device for preventing pipe body from melting and sinking in permafrost region by using foaming material |
-
2009
- 2009-09-21 CN CN2009202162645U patent/CN201535411U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103899839A (en) * | 2012-12-28 | 2014-07-02 | 中国石油天然气股份有限公司 | Method and device for preventing pipe body from melting and sinking in permafrost region by using foaming material |
| CN103899839B (en) * | 2012-12-28 | 2015-12-02 | 中国石油天然气股份有限公司 | Method and device for preventing pipe body from melting and sinking in permafrost region by using foaming material |
| CN103062575A (en) * | 2013-01-24 | 2013-04-24 | 林泊成 | Heat-insulation joint coating process for underground oil and gas pipelines in high and cold regions |
| CN103604026A (en) * | 2013-11-06 | 2014-02-26 | 北京豪特耐管道设备有限公司 | Novel construction method for heat insulation of heat-insulating pipeline joints |
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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: 20100728 Termination date: 20180921 |