CN201521723U - Low-temperature high-strength anti-corrosion heat insulation composite pipeline - Google Patents
Low-temperature high-strength anti-corrosion heat insulation composite pipeline Download PDFInfo
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- CN201521723U CN201521723U CN2009201009760U CN200920100976U CN201521723U CN 201521723 U CN201521723 U CN 201521723U CN 2009201009760 U CN2009201009760 U CN 2009201009760U CN 200920100976 U CN200920100976 U CN 200920100976U CN 201521723 U CN201521723 U CN 201521723U
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- pipe
- corrosion
- heat insulation
- pipeline
- anticorrosive
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Abstract
The utility model relates to a low-temperature high-strength anti-corrosion heat insulation composite pipeline. A matrix is a steel pipe (1) with the surface coated with epoxy powders; the steel pipe (1) is externally and sequentially provided with an anti-corrosion layer (2), a heat insulation layer (3) and a protection layer (4), wherein the anti-corrosion layer (2) is an anti-corrosion pipe made by adhering special modified polyethylene material to the external wall of the steel pipe (1) by using adhesive; the protection layer (4) is a protection pipe prefabricated by using high intensity polyethylene; the center lines of the protection pipe and the anti-corrosion pipe are overlapped after being sleeved; and the heat insulation layer (3) is an insulation pipe made by filling hard polyurethane foam between the anticorrosion pipe and the protection pipe. The composite pipeline simultaneously has the 3PE anti-corrosion layers and hard polyurethane foam heat insulation layer, and provides an anti-corrosion heat insulation long conveying pipeline for alpine regions.
Description
Technical field:
The utility model relates to buried steel pipeline, the anticorrosive heat insulating compound pipeline of particularly a kind of low temperature or permafrost oil transportation, water delivery.
Background technique:
Anticorrosion, 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.The main effect of anti-corrosion pipeline is to prevent steel pipe because extraneous corrosion causes the pipeline perforation.The main effect of insulation pipe is that pipeline internal medium is incubated.Long distance pipeline commonly used has: three-decker polyethylene (3PE), urethane foam thermal insulation pipe etc.Material and process engineering be seriation, standardization all.Characteristics are: normal temperature material, normal temperature technology, normal temperature use.Because permafrost geographical conditions complexity, particularly the soil alkalinity is big, the hot insulated line in be laid in low-lying, grassy marsh and high water level district, and being easy to influences pipeline allomeric function and working life because of the pipeline outer wall corrosion causes insulation failure.Pipeline will pass through the permafrost soil layer, guarantee that frozen soil does not subside, pipeline does not have distortion, need prefabricated, winter construction in winter and winter repaired mouth, particularly because the raising of environmental requirement, using effect to insulation pipe is had higher requirement, not only should possess heat insulation function, will prevent that more outer wall corrosion from causing pipe perforation, leak of liquid, bring influence and loss to oil field production and environment.
The model utility content:
In order to solve existing technical problem in the background technique, the utility model provides a kind of have insulation and anticorrosion dual functions, and whole service life is long, and can be applicable to the long distance pipeline of geographical conditions complex areas such as low temperature, frozen soil.
For solving the problems of the technologies described above, the technical solution of the utility model is: the matrix of the utility model low-temperature high-strength anticorrosive heat insulating compound pipeline is the steel pipe that the epoxy powder coating is used on the surface, steel pipe is followed successively by anticorrosive coat outward, thermal insulation layer, protective coating, wherein anticorrosive coat is that the modified poly ethylene PP Pipe Compound is used the coated anti-corrosion pipe of making on the outer wall of steel pipe that bonds to of adhesive, protective coating is to use the prefabricated protecting tube of high density polyethylene (HDPE), protecting tube is sleeved on anti-corrosion pipe, the central lines of two pipes, thermal insulation layer are to annotate to fill the thermal insulation pipe that hard polyurethane foams is made between anti-corrosion pipe and protecting tube.
In order to reach good corrosion-resistant thermal insulation effect, the FBE thickness of preferred steel tube surface coating is 70-100 μ m; Bonding anticorrosive coat is 170～250 μ m with the thickness of adhesive; Polyethylene anticorrosive coating is a three-decker, and the thickness of anticorrosive coat is not all 2.5mm～3.7mm according to outer diameter of steel pipes.
The utlity model has following beneficial effect: because outer surface of steel tube has with it in conjunction with firm 3PE layer, even if external protection breakage, thermal insulation layer water inlet, also can not produce corrosion, thereby improve pipeline working life, satisfy the technical requirements of long distance pipeline outer surface of steel tube; Again because this pipeline has the hard polyurethane foams thermal insulation layer, because of the hard polyurethane foams thermal insulation layer has shock resistance, anticorrosive, characteristics such as adhesion strength is high, high insulating effect, can guarantee that pipeline uses under cryogenic conditions, this product satisfies of the specific (special) requirements of permafrost area, so can be widely used in extremely frigid zones oil transportation, water delivery engineering to pipeline corrosion protection and heat insulation function.
Description of drawings:
Fig. 1 is the utility model shaft section structural representation;
Fig. 2 is the structural representation in cross section, the utility model footpath;
Among the figure: steel pipe 1, polyethylene anticorrosive coating 2, hard polyurethane foams thermal insulation layer 3, the high density polyethylene (HDPE) protective coating 4 of epoxy powder coating used on the surface.
Embodiment:
The utility model is described in further detail below in conjunction with accompanying drawing:
By Fig. 1 in conjunction with shown in Figure 2, the matrix of the utility model low-temperature high-strength anticorrosive heat insulating compound pipeline is the steel pipe 1 that the epoxy powder coating is used on the surface, the steel pipe 1 outer polyethylene anticorrosive coating 2 that is followed successively by, hard polyurethane foams thermal insulation layer 3, high density polyethylene (HDPE) protective coating 4, wherein polyethylene anticorrosive coating 2 uses on the coated outer wall that bonds to steel pipe 1 of adhesive for the modified poly ethylene PP Pipe Compound and forms, annotate between polyethylene anticorrosive coating 2 and high density polyethylene (HDPE) protective coating 4 and fill hard polyurethane foams formation thermal insulation layer 3, high density polyethylene (HDPE) protective coating 4 is for using the prefabricated protecting tube of high density polyethylene (HDPE).
The making method of this multiple tube is: at first to steel pipe 1 outer surface impeller blasting, reach the degree of finish and the depth of abrasion pattern of generally held standard regulation, electrostatic spraying epoxy powder, thickness 70-100 μ m; Extrude coated adhesive, thickness is 170～250 μ m; Coated modified poly ethylene PP Pipe Compound is made three-decker polyethylene anti-corrosion pipe, promptly forms polyethylene anticorrosive coating 2, and outer surface is implemented the electric polarization processing simultaneously; Size is according to the rules produced high density polyethylene (HDPE) protecting tube 4 in advance with extrusion by melting then, simultaneously protecting tube 4 internal surfaces is implemented electric polarization and handles; Outer protecting tube 4 is covered with prefabricated three-decker polyethylene anti-corrosion pipe 2, guarantee that two tube hub axles overlap, the pipe end length 150mm～200mm that lets the hair grow injects the high strength hard polyurethane raw material with high-pressure foam, and foaming and setting unloads card, clears up end face; Outer pillar 4 thickness of foam heat-insulation layer 3 and polyethylene can be determined arbitrarily according to user's request.
Claimant actual field has made the low-temperature high-strength anticorrosive heat insulating compound pipeline of following two kinds of specifications, and concrete line size is as follows:
Above-mentioned pipeline is design employing in the unconcerned big line of Sino-Russian pipeline, this structure also once was applied in Daqing oil field production capacity and old liberated area improvement project, the oil field carries the effect of thermal medium also very good, is the anticorrosive new structure pipeline of insulation again for extremely frigid zones provides a kind of.
Claims (3)
1. low-temperature high-strength anticorrosive heat insulating compound pipeline, it is characterized in that: the pipeline matrix is the steel pipe (1) that the epoxy powder coating is used on the surface, the outer anticorrosive coat (2) that is followed successively by of steel pipe (1), thermal insulation layer (3), protective coating (4), wherein anticorrosive coat (2) is that the modified poly ethylene PP Pipe Compound is used the coated anti-corrosion pipe of making on the outer wall of steel pipe (1) that bonds to of adhesive, protective coating (4) is to use the prefabricated protecting tube of high density polyethylene (HDPE), protecting tube is sleeved on anti-corrosion pipe, the central lines of two pipes, thermal insulation layer (3) are to annotate to fill the thermal insulation pipe that hard polyurethane foams is made between anti-corrosion pipe and protecting tube.
2. according to the described low-temperature high-strength anticorrosive heat insulating compound pipeline of claim 1, it is characterized in that: polyethylene anticorrosive coating is a three-decker.
3. according to the described low-temperature high-strength anticorrosive heat insulating compound pipeline of claim 1, it is characterized in that: the FBE thickness of steel tube surface coating is 70-100 μ m, and bonding anticorrosive coat (2) is 170～250 μ m with the thickness of adhesive; The thickness of anticorrosive coat (2) is not all 2.5mm～3.7mm according to outer diameter of steel pipes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201009760U CN201521723U (en) | 2009-09-28 | 2009-09-28 | Low-temperature high-strength anti-corrosion heat insulation composite pipeline |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201009760U CN201521723U (en) | 2009-09-28 | 2009-09-28 | Low-temperature high-strength anti-corrosion heat insulation composite pipeline |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201521723U true CN201521723U (en) | 2010-07-07 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009201009760U Expired - Fee Related CN201521723U (en) | 2009-09-28 | 2009-09-28 | Low-temperature high-strength anti-corrosion heat insulation composite pipeline |
Country Status (1)
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| CN (1) | CN201521723U (en) |
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102705633A (en) * | 2012-05-31 | 2012-10-03 | 山东胜利钢管有限公司 | High shearing force three-layered polyolefin anti-corrosive thermal insulation steel pipe and manufacturing process thereof |
| CN102720898A (en) * | 2012-07-02 | 2012-10-10 | 江苏京元节能环保有限公司 | Preparation process of polyethylene sheath polyurethane heat-preserving pipe used under coal mine well |
| CN102922651A (en) * | 2012-10-04 | 2013-02-13 | 河北昊天管业股份有限公司 | Processing method of anti-shearing and high temperature-resisting composite water-polyurethane heat-insulation pipe |
| CN103016851A (en) * | 2012-12-06 | 2013-04-03 | 同济大学 | Smart pipeline with optical fiber sensing function and manufacturing method for smart pipeline |
| 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 controlling thaw settlement of pipes in permafrost regions by foam material |
| CN103982712A (en) * | 2014-05-28 | 2014-08-13 | 宁夏华泰塑料管业有限公司 | Polyurethane rigid foam PP-R (Polypropylene) thermal insulation anticorrosion pipeline |
| CN104075068A (en) * | 2014-07-17 | 2014-10-01 | 梅晓萌 | Fuel oil conveying pipeline with muffling device |
| CN107387889A (en) * | 2016-05-17 | 2017-11-24 | 高金龙 | The durable body of multi-purpose type corrosion-resistant thermal insulation |
| CN108980523A (en) * | 2018-09-27 | 2018-12-11 | 江苏清源管道技术有限公司 | A kind of high and cold pipeline composite anti-corrosive structure and preparation method |
| CN109000021A (en) * | 2018-07-10 | 2018-12-14 | 广东创新科技职业学院 | A kind of instant outlet controlling system of hot water automatic cycle |
| CN109114360A (en) * | 2018-09-27 | 2019-01-01 | 江苏清源管道技术有限公司 | A kind of high and cold Pipeline joint anticorrosion structure and method |
| CN116284652A (en) * | 2023-03-10 | 2023-06-23 | 河北乾海管道制造有限公司 | Steel sleeve steel polyurethane heat-insulating pipe and preparation method thereof |
-
2009
- 2009-09-28 CN CN2009201009760U patent/CN201521723U/en not_active Expired - Fee Related
Cited By (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102705633B (en) * | 2012-05-31 | 2014-12-10 | 山东胜利钢管有限公司 | High shearing force three-layered polyolefin anti-corrosive thermal insulation steel pipe and manufacturing process thereof |
| CN102705633A (en) * | 2012-05-31 | 2012-10-03 | 山东胜利钢管有限公司 | High shearing force three-layered polyolefin anti-corrosive thermal insulation steel pipe and manufacturing process thereof |
| CN102720898A (en) * | 2012-07-02 | 2012-10-10 | 江苏京元节能环保有限公司 | Preparation process of polyethylene sheath polyurethane heat-preserving pipe used under coal mine well |
| CN102720898B (en) * | 2012-07-02 | 2015-04-22 | 江苏京元节能环保有限公司 | Preparation process of polyethylene sheath polyurethane heat-preserving pipe used under coal mine well |
| CN102922651A (en) * | 2012-10-04 | 2013-02-13 | 河北昊天管业股份有限公司 | Processing method of anti-shearing and high temperature-resisting composite water-polyurethane heat-insulation pipe |
| CN102922651B (en) * | 2012-10-04 | 2015-11-25 | 河北昊天能源投资集团有限公司 | The processing method of anti-shearing high-temperature resistant water polyurethane composite thermal insulation pipe |
| CN103016851A (en) * | 2012-12-06 | 2013-04-03 | 同济大学 | Smart pipeline with optical fiber sensing function and manufacturing method for smart pipeline |
| 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 controlling thaw settlement of pipes in permafrost regions by foam material |
| CN103899839B (en) * | 2012-12-28 | 2015-12-02 | 中国石油天然气股份有限公司 | A kind of method and device utilizing foam material control Permafrost Area body thaw collapse |
| CN103982712A (en) * | 2014-05-28 | 2014-08-13 | 宁夏华泰塑料管业有限公司 | Polyurethane rigid foam PP-R (Polypropylene) thermal insulation anticorrosion pipeline |
| CN104075068A (en) * | 2014-07-17 | 2014-10-01 | 梅晓萌 | Fuel oil conveying pipeline with muffling device |
| CN107387889A (en) * | 2016-05-17 | 2017-11-24 | 高金龙 | The durable body of multi-purpose type corrosion-resistant thermal insulation |
| CN109000021A (en) * | 2018-07-10 | 2018-12-14 | 广东创新科技职业学院 | A kind of instant outlet controlling system of hot water automatic cycle |
| CN108980523A (en) * | 2018-09-27 | 2018-12-11 | 江苏清源管道技术有限公司 | A kind of high and cold pipeline composite anti-corrosive structure and preparation method |
| CN109114360A (en) * | 2018-09-27 | 2019-01-01 | 江苏清源管道技术有限公司 | A kind of high and cold Pipeline joint anticorrosion structure and method |
| CN116284652A (en) * | 2023-03-10 | 2023-06-23 | 河北乾海管道制造有限公司 | Steel sleeve steel polyurethane heat-insulating pipe and preparation method thereof |
| CN116284652B (en) * | 2023-03-10 | 2023-08-08 | 河北乾海管道制造有限公司 | Steel sleeve steel polyurethane heat-insulating pipe and preparation method thereof |
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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 |
Granted publication date: 20100707 Termination date: 20180928 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |