CN2690704Y - Modified polyurethane foam anti-corrosion thermal insulation pipe - Google Patents
Modified polyurethane foam anti-corrosion thermal insulation pipe Download PDFInfo
- Publication number
- CN2690704Y CN2690704Y CN 200420051070 CN200420051070U CN2690704Y CN 2690704 Y CN2690704 Y CN 2690704Y CN 200420051070 CN200420051070 CN 200420051070 CN 200420051070 U CN200420051070 U CN 200420051070U CN 2690704 Y CN2690704 Y CN 2690704Y
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- polyurethane foam
- layer
- pipeline
- thermal insulation
- pipe
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Abstract
The utility model relates to a modified polyurethane foam anti-corrosion thermal insulation pipe with anti-corrosion and thermal insulation properties, which is used as an oil field gathering oil pipe and a town embedded heat distribution pipeline, mainly solving the problem that when the jacket skin of the outer layer is broken, the existing polyurethane foam jacket pipe once encounters the acidic material in the water polyurethane foam, and the acidic material can corrode the pipeline in an accelerative way. The utility model is characterized in that the modified polyurethane foam anti-corrosion thermal insulation pipe is composed of a three-layered structure, wherein a steel pipe (1) is arranged at the inner layer, an asphalt polyurethane foam layer (2) is arranged at the middle layer, and a polyethylene jacket skin protective layer (3) is arranged at the outer layer. The utility model has the advantages that the pipeline is not corroded, the service life of the anti-corrosion thermal insulation pipeline is prolonged, and the processing cost of the pipeline is reduced.
Description
Technical field:
The utility model relates to a kind of tubing that the ground heat distribution pipeline is buried in oil field gathering and transportation oil pipe and cities and towns that can be used as, and especially relates to a kind of modified polyurethane foam anti-corrosion heat insulation pipe with strong anticorrosion and thermal insulation property.
Background technique:
In fields such as the thermal insulation of burying thermal insulation outside ground heat distribution pipeline insulation and the basin, industrial thermal insulation and building of oil field gathering and transportation oil pipe and cities and towns central heat supply, waterproof, sound insulation and noise reduction, conventional polyurethanes foamed plastics jacket tube is used in a large number.The General Construction of this tubing is a five-layer structure, promptly each layer is followed successively by from inside to outside: steel pipe, prime coat, the polyethylene tape anticorrosive coat, conventional polyurethanes foam layer and yellow jacket cortex, this urethane foam jacket tube in use is found and has following shortcoming: because contain a large amount of acidic materials in the conventional polyurethanes foamed plastics, in case outer jacket skin breaks because of the various factors in the construction causes, infiltration, acidic materials in the urethane foam will rush down outward, consequently aggravated the speed that pipeline is corroded, is greatly diminished the working life of this kind pipeline.
The model utility content:
Have the deficiency that the acidic materials in the urethane foam jacket tube aggravate corroded pipeline easily now in order to overcome, the utility model provides a kind of modified polyurethane foam anti-corrosion heat insulation pipe, the characteristics that this kind modified polyurethane foam anti-corrosion heat insulation pipe has can be improved corrosion-resistanting insulation pipe working life, reduce the pipeline processing cost.
The technical solution of the utility model is: this kind modified polyurethane foam anti-corrosion heat insulation pipe, mainly constitute by three-decker, and wherein steel pipe is positioned at innermost layer, and the asphalt polyurethane foam layer is positioned at the mesosphere, and hot melt twines the jacket skin protective layer and is positioned at outermost surface.
In the technical program, described asphalt polyurethane foam layer is a bitumen polyurethane hard foamed plastics, and it is by making up material and poly isocyanate by a certain percentage through chemical blowing, adopting cast or spraying coating process to make.Described combination material is made through mixing to stir by coal coke asphalt liquid, polyether polyol, fire retardant, foam stabilizing compound, crosslinking agent, catalyzer, stabilizer.
The utlity model has following beneficial effect: owing to take its mesosphere of modified polyurethane foam anti-corrosion heat insulation pipe of such scheme to adopt bitumen polyurethane hard foamed plastics, this kind material is than common urethane foam, have identical thermal insulation property and but do not contain acidic materials, make when outer jacket skin is damaged, do not have acidic materials meeting corroded pipeline, and then prolonged the working life of pipeline; In addition, bitumen polyurethane hard foamed plastics can form bitum protective film together at the external layer of steel pipe, can directly play antisepsis, thereby than common urethane foam jacket tube, can save break off the base enamelled coating and adhesive tape layer, therefore the manufacture cost of having saved the jacket pipeline.
Description of drawings:
Accompanying drawing 1 is a structure sectional view of the present utility model;
Accompanying drawing 2 is structure sectional views of existing urethane foam jacket tube.
1-steel pipe among the figure, 2-asphalt polyurethane foam layer, 3-polyethylene jacket skin protective layer, 4-prime coat, 5-polyethylene tape anticorrosive coat, 6-polyurethane foam layer, the yellow jacket skin protective layer of 7-.
Embodiment:
The utility model is described in further detail below in conjunction with accompanying drawing:
Shown in Fig. 2 is in the prior art, the structure sectional view of conventional polyurethanes foamed plastics jacket tube, by among this figure as can be known, the General Construction of this tubing is a five-layer structure, promptly each layer is followed successively by from inside to outside: steel pipe 1, prime coat 4, polyethylene tape anticorrosive coat 5, conventional polyurethanes foam layer 6 and yellow jacket cortex 7, this urethane foam jacket tube is because contain acidic materials in the conventional polyurethanes foam layer 6 wherein, in case outer jacket skin breaks because of the various factors in the construction causes, infiltration, acidic materials in the urethane foam will aggravate the speed that pipeline is corroded, and is greatly diminished the working life of this kind pipeline.
At the shortcoming that exists in the existing conventional polyurethanes foamed plastics jacket tube technology.The technical program is made improvement as shown in Figure 1; this kind modified polyurethane foam anti-corrosion heat insulation pipe mainly is made of three-decker, and wherein steel pipe 1 is positioned at innermost layer; asphalt polyurethane foam layer 2 is positioned at the mesosphere, and polyethylene jacket skin protective layer 3 is positioned at outermost surface.
In the technical program, described asphalt polyurethane foam layer is a bitumen polyurethane hard foamed plastics, and it is by making up material and poly isocyanate by a certain percentage through chemical blowing, adopting cast or spraying coating process to make.Described combination material is made through mixing to stir by coal coke asphalt liquid, polyether polyol, fire retardant, foam stabilizing compound, crosslinking agent, catalyzer, stabilizer.
When making this kind modified polyurethane foam anti-corrosion heat insulation pipe, after steel pipe 1 directly can being eliminated rust, utilize a step foam production method will add the outer surface that a series of modified material asphalt polyurethane foamed plastics such as Synthesis of polymers agent, pitch and polyethylene jacket skin protective layer 3 are fixed in steel pipe 1 successively; In addition, also can utilize two step foam production methods, promptly by the fixing asphalt polyurethane foam layer 2 of foam production method, the method for utilizing the hot melt winding is polyethylene jacket skin protective layer 3 fixedly.Because the asphalt polyurethane foamed plastics can form bitum protective film together at the external layer of steel pipe 1; this layer protective film can directly play antisepsis; therefore can cancel and be used for corrosion-resistant prime coat 4, polyethylene tape anticorrosive coat 5 and outermost yellow jacket cortex 7 in the conventional polyurethanes foamed plastics jacket tube, only select for use polyethylene jacket skin protective layer 3 to be positioned at outermost surface and get final product.So the modified polyurethane foam anti-corrosion heat insulation pipe described in application the utility model is more much lower than the cost of the yellow jacket tube of conventional polyurethanes foamed plastics.
In addition, because the color of asphalt polyurethane foamed plastics is a black, so for easy construction, the technical program should preferably be twined by hot melt with black polyethylene jacket skin and be formed polyethylene jacket skin protective layer 3.
In sum, adopt the utility model, the maintain and replace expense that can save steel pipe greatly improves pipeline service life, and then obtains better social benefit, economic benefit.
Claims (2)
1, a kind of modified polyurethane foam anti-corrosion heat insulation pipe; comprise steel pipe (1); it is characterized in that: described modified polyurethane foam anti-corrosion heat insulation pipe is made of three-decker; wherein steel pipe (1) is positioned at internal layer; asphalt polyurethane foam layer (2) is positioned at the mesosphere, and polyethylene jacket skin protective layer (3) is positioned at skin.
2, modified polyurethane foam anti-corrosion heat insulation pipe according to claim 1 is characterized in that: described polyethylene jacket skin protective layer (3) adopts black jacket skin protective layer to be fastened in asphalt polyurethane foam layer (2) outer surface through hot melt.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420051070 CN2690704Y (en) | 2004-04-23 | 2004-04-23 | Modified polyurethane foam anti-corrosion thermal insulation pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420051070 CN2690704Y (en) | 2004-04-23 | 2004-04-23 | Modified polyurethane foam anti-corrosion thermal insulation pipe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2690704Y true CN2690704Y (en) | 2005-04-06 |
Family
ID=34672358
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200420051070 Expired - Fee Related CN2690704Y (en) | 2004-04-23 | 2004-04-23 | Modified polyurethane foam anti-corrosion thermal insulation pipe |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2690704Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104100209A (en) * | 2014-04-03 | 2014-10-15 | 刘兴仁 | Heat-insulation layer coated tubing |
| CN104358943A (en) * | 2014-10-30 | 2015-02-18 | 无锡同心塑料制品有限公司 | Anti-corrosion thermal insulation pipe |
-
2004
- 2004-04-23 CN CN 200420051070 patent/CN2690704Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104100209A (en) * | 2014-04-03 | 2014-10-15 | 刘兴仁 | Heat-insulation layer coated tubing |
| CN104533306A (en) * | 2014-04-03 | 2015-04-22 | 刘兴仁 | Outside-wrapped heat insulation oil pipe |
| CN104100209B (en) * | 2014-04-03 | 2016-08-31 | 刘兴仁 | Insulated tubing is wrapped up in outside a kind of |
| CN104358943A (en) * | 2014-10-30 | 2015-02-18 | 无锡同心塑料制品有限公司 | Anti-corrosion thermal insulation pipe |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |