CN104358943A - Anti-corrosion thermal insulation pipe - Google Patents
Anti-corrosion thermal insulation pipe Download PDFInfo
- Publication number
- CN104358943A CN104358943A CN201410591957.8A CN201410591957A CN104358943A CN 104358943 A CN104358943 A CN 104358943A CN 201410591957 A CN201410591957 A CN 201410591957A CN 104358943 A CN104358943 A CN 104358943A
- Authority
- CN
- China
- Prior art keywords
- layer
- thermal insulation
- corrosion
- resistance
- insulation pipe
- 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
- 238000009413 insulation Methods 0.000 title claims abstract description 26
- 238000005260 corrosion Methods 0.000 title claims abstract description 15
- 239000004698 Polyethylene Substances 0.000 claims abstract description 7
- 229920005830 Polyurethane Foam Polymers 0.000 claims abstract description 7
- -1 polyethylene Polymers 0.000 claims abstract description 7
- 229920000573 polyethylene Polymers 0.000 claims abstract description 7
- 239000011496 polyurethane foam Substances 0.000 claims abstract description 7
- 239000011253 protective coating Substances 0.000 claims description 12
- 230000032683 aging Effects 0.000 abstract description 6
- 238000005336 cracking Methods 0.000 abstract description 3
- 230000007613 environmental effect Effects 0.000 abstract description 3
- 229920003023 plastic Polymers 0.000 abstract description 3
- 239000004033 plastic Substances 0.000 abstract description 3
- 230000035882 stress Effects 0.000 abstract description 3
- 239000000126 substance Substances 0.000 abstract description 3
- 239000010426 asphalt Substances 0.000 abstract 2
- 230000007797 corrosion Effects 0.000 abstract 1
- 239000004745 nonwoven fabric Substances 0.000 abstract 1
- 239000010410 layer Substances 0.000 description 16
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- BPQQTUXANYXVAA-UHFFFAOYSA-N Orthosilicate Chemical compound [O-][Si]([O-])([O-])[O-] BPQQTUXANYXVAA-UHFFFAOYSA-N 0.000 description 2
- 230000003712 anti-aging effect Effects 0.000 description 2
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 239000010779 crude oil Substances 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000011490 mineral wool Substances 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
- 239000011241 protective layer Substances 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
Classifications
-
- 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
- F16L9/00—Rigid pipes
- F16L9/14—Compound tubes, i.e. made of materials not wholly covered by any one of the preceding groups
-
- 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
- F16L58/00—Protection of pipes or pipe fittings against corrosion or incrustation
- F16L58/02—Protection of pipes or pipe fittings against corrosion or incrustation by means of internal or external coatings
- F16L58/04—Coatings characterised by the materials used
- F16L58/10—Coatings characterised by the materials used by rubber or plastics
- F16L58/1054—Coatings characterised by the materials used by rubber or plastics the coating being placed outside the pipe
-
- 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
- F16L59/02—Shape or form of insulating materials, with or without coverings integral with the insulating materials
- F16L59/029—Shape or form of insulating materials, with or without coverings integral with the insulating materials layered
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Thermal Insulation (AREA)
- Laminated Bodies (AREA)
Abstract
The invention discloses an anti-corrosion thermal insulation pipe which comprises a pipe body. An insulating layer, a protection layer and an anti-corrosion layer are fixedly arranged on the outer wall of the pipe body; the protection layer is positioned between the insulating layer and the anti-corrosion layer; the insulating layer is made of asphalt-based polyurethane foam; the protection layer comprises a polyethylene layer and a non-woven fabric layer. The asphalt-based polyurethane foam layer of the anti-corrosion thermal insulation pipe has thermal insulation performance, watertightness, chemical corrosion resistance and aging resistance; the protection layer has excellent mechanical intensity, resistance to environmental aging stress cracking and specific plastic elongation, has excellent waterproofness, compressive strength and resistance to ultraviolet rays and can be used permanently in the sunshine so as to prolong the service life of a pipeline.
Description
Technical field
The present invention relates to a kind of pipeline, particularly relate to a kind of anti-corrosion heat insulation pipe.
Background technique
Northern China most area, when the pipeline such as crude oil, heating employing surface variant laying and station field pipeline network construction, all needs to take anticorrosion and Insulation.General ground anti-corrosion heat insulation pipe anticorrosive coat adopts coating to brush, and thermal insulation layer adopts rock wool or the fibre pipe such as silicate, alumina silicate shell product, also needs galvanized wire to carry out colligation, and protective layer adopts galvanized sheet iron and reinforces with rivet.Above-mentioned processing mode compressive strength is low, anti-aging and water-proof performance is poor, and product comprehensive quality can not get ensureing, in addition, because oil field geographical conditions are complicated, particularly soil alkalinity is large, be easy to make pipeline outer wall corrode and cause insulation failure, affect pipeline allomeric function and working life.
Summary of the invention
The present invention is intended to overcome the deficiencies in the prior art part and provide a kind of mechanical strength high, anti-aging and water-proof performance good, the anti-corrosion heat insulation pipe of long service life.
Technological scheme of the present invention is: a kind of anti-corrosion heat insulation pipe, comprises body, is fixed with thermal insulation layer, protective coating and anticorrosive coat at described tube wall; Described protective coating is between thermal insulation layer and anticorrosive coat; Described thermal insulation layer adopts asphalt-base polyurethane foam; Described protective coating comprises polyethylene layer and nonwoven layer.
Preferably, the thickness of described polyethylene layer is 1.5mm-2.0mm.
Beneficial effect of the present invention: asphalt-base polyurethane foam layer of the present invention has heat-insulating property, impermeability, resistance to chemical attack, ageing-resistant performance, and protective coating has good mechanical strength, the stress cracking performance of resistance to environmental aging and distinctive plastic elongation, and there is good waterproof, compressive strength, anti-ultraviolet property, forever can use in the sun, thus improve the working life of pipeline.
Accompanying drawing explanation
Fig. 1 is the structure sectional view of anti-corrosion heat insulation pipe of the present invention;
In figure: 1 body, 2 thermal insulation layers, 3 protective coatings, 4 anticorrosive coats.
Embodiment
By reference to the accompanying drawings mode of execution provided by the invention is described in further detail:
As shown in Figure 1, a kind of anti-corrosion heat insulation pipe, comprises body 1, is fixed with thermal insulation layer 2, protective coating 3 and anticorrosive coat 4 at described body 1 outer wall; Described protective coating 3 is between thermal insulation layer 2 and anticorrosive coat 4; Described thermal insulation layer 2 adopts asphalt-base polyurethane foam; Described protective coating 3 comprises polyethylene layer and nonwoven layer.
Preferably, the thickness of described polyethylene layer is 1.5mm-2.0mm.
Asphalt-base polyurethane foam layer of the present invention has heat-insulating property, impermeability, resistance to chemical attack, ageing-resistant performance, and protective coating has good mechanical strength, the stress cracking performance of resistance to environmental aging and distinctive plastic elongation, and there is good waterproof, compressive strength, anti-ultraviolet property, forever can use in the sun, thus improve the working life of pipeline.
In this description, the present invention is described with reference to its specific embodiment.But, still can make various amendment and conversion obviously and not deviate from the spirit and scope of the present invention.Therefore, specification and accompanying drawing are regarded in an illustrative, rather than a restrictive.
Claims (2)
1. an anti-corrosion heat insulation pipe, is characterized in that, comprises body, is fixed with thermal insulation layer, protective coating and anticorrosive coat at described tube wall; Described protective coating is between thermal insulation layer and anticorrosive coat; Described thermal insulation layer adopts asphalt-base polyurethane foam; Described protective coating comprises polyethylene layer and nonwoven layer.
2. according to the anti-corrosion heat insulation pipe described in claim 1, it is characterized in that: the thickness of described polyethylene layer is 1.5mm-2.0mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410591957.8A CN104358943A (en) | 2014-10-30 | 2014-10-30 | Anti-corrosion thermal insulation pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410591957.8A CN104358943A (en) | 2014-10-30 | 2014-10-30 | Anti-corrosion thermal insulation pipe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104358943A true CN104358943A (en) | 2015-02-18 |
Family
ID=52526234
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410591957.8A Pending CN104358943A (en) | 2014-10-30 | 2014-10-30 | Anti-corrosion thermal insulation pipe |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104358943A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2391076Y (en) * | 1999-10-12 | 2000-08-09 | 辽河石油勘探局油田建设工程二公司 | High-temperature resistance buried thermal insulation pipeline |
| CN2690704Y (en) * | 2004-04-23 | 2005-04-06 | 付忠昌 | Modified polyurethane foam anti-corrosion thermal insulation pipe |
| US20080072988A1 (en) * | 2006-08-22 | 2008-03-27 | Perma-Pipe, Inc. | Glass Syntactic Polyurethane Insulated Product |
| CN201155653Y (en) * | 2007-11-12 | 2008-11-26 | 大庆油田建设集团有限责任公司建材公司防腐管道厂 | Bituminous polyurethane foam insulation pipe |
| CN203730935U (en) * | 2014-01-21 | 2014-07-23 | 天津市滨海新区塘沽建通防腐保温有限公司 | Novel composite heat preservation pipe |
| CN204358277U (en) * | 2014-10-30 | 2015-05-27 | 无锡同心塑料制品有限公司 | A kind of anti-corrosion heat insulation pipe |
-
2014
- 2014-10-30 CN CN201410591957.8A patent/CN104358943A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2391076Y (en) * | 1999-10-12 | 2000-08-09 | 辽河石油勘探局油田建设工程二公司 | High-temperature resistance buried thermal insulation pipeline |
| CN2690704Y (en) * | 2004-04-23 | 2005-04-06 | 付忠昌 | Modified polyurethane foam anti-corrosion thermal insulation pipe |
| US20080072988A1 (en) * | 2006-08-22 | 2008-03-27 | Perma-Pipe, Inc. | Glass Syntactic Polyurethane Insulated Product |
| CN201155653Y (en) * | 2007-11-12 | 2008-11-26 | 大庆油田建设集团有限责任公司建材公司防腐管道厂 | Bituminous polyurethane foam insulation pipe |
| CN203730935U (en) * | 2014-01-21 | 2014-07-23 | 天津市滨海新区塘沽建通防腐保温有限公司 | Novel composite heat preservation pipe |
| CN204358277U (en) * | 2014-10-30 | 2015-05-27 | 无锡同心塑料制品有限公司 | A kind of anti-corrosion heat insulation pipe |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20150218 |
|
| RJ01 | Rejection of invention patent application after publication |