CN203404562U - Polyurethane foaming plastic thermal insulation pipeline - Google Patents
Polyurethane foaming plastic thermal insulation pipeline Download PDFInfo
- Publication number
- CN203404562U CN203404562U CN201320484885.8U CN201320484885U CN203404562U CN 203404562 U CN203404562 U CN 203404562U CN 201320484885 U CN201320484885 U CN 201320484885U CN 203404562 U CN203404562 U CN 203404562U
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- CN
- China
- Prior art keywords
- thermal insulation
- pipe
- polyurethane foaming
- foaming plastic
- plastic thermal
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Abstract
The utility model discloses a polyurethane foaming plastic thermal insulation pipeline, and belongs to the technical field of pipelines for petroleum and petrochemicals or pipelines for urban heating construction. The polyurethane foaming plastic thermal insulation pipeline comprises a steel pipe, an anti-corrosion layer, a polyurethane foaming plastic thermal insulation layer, a low-temperature-resistant cracking-resistant high-density polyethylene outer protective tube and reserved welding sections, wherein the outer periphery of the steel tube is wrapped by the anti-corrosion layer, the outer periphery of the anti-corrosion layer is wrapped by the polyurethane foaming plastic thermal insulation layer, the outer periphery of the polyurethane foaming plastic thermal insulation layer is wrapped by the low-temperature-resistant cracking-resistant high-density polyethylene outer protective tube, and the reserved welding sections are arranged at the two ends of the steel tube respectively. The polyurethane foaming plastic thermal insulation pipeline has the advantages that the polyurethane foaming plastic thermal insulation pipeline with the low-temperature-resistant cracking-resistant high-density polyethylene outer protective tube has the good low-temperature resistance under the temperature about 40 DEG C below zero, the cracking rate of the thermal insulation pipe is within 5%, the cost of the polyurethane foaming plastic thermal insulation pipeline is the same as the cost of an existing conventional product, and the construction requirements are met under the low temperature cold environment.
Description
Technical field
The utility model relates to a kind of urethane foam insulation pipe, belongs to petroleum and petrochemical industry or pipe technology field is used in urban heating construction.
Background technique
In the northern area of China, along with the fast development of Oil/Gas Pipe and urban heating pipe-line construction, all to lay the urethane foam thermal insulation pipe that a large amount of employing high density polyethylene (HDPE)s protect every year outward.Because execution conditions (as marshland) are limit, high density polyethylene (HDPE) protects thermal insulation pipe outward needs cold conditions in the winter time to carry out burial and construction, under-20 ℃ of even-40 ℃ of low-temperature cold conditions, there is high density polyethylene (HDPE) outer protective layer and thermal insulation dehiscence phenomenon in thermal insulation pipe, not only repair difficulty large, cost is high, and has a strong impact on quality and the progress of construction.Therefore need a kind of urethane foam insulation pipe with low temperature resistant cracking resistance polyethylene outer protective pipe to meet the need of market.
Summary of the invention
In order to overcome the deficiencies in the prior art, the utility model provides a kind of urethane foam insulation pipe, the low temperature resistant cracking resistance polyethylene outer protective pipe using is by after meeting polyethylene special-purpose material PE80 level that GB requires and above resin and evenly mixing with a certain amount of low temperature toughening modifying material, through extruder, extrude and form, be applicable to ripe at present Prefabrication technique completely, the high density polyethylene (HDPE) of producing protects polyurethane thermal pipe outward and has good low temperature resistant anti-cracking performance, under-40 ℃ of conditions, cracking rate can be dropped in 5%, effectively improve winter low temperature application property and the construction quality that high density polyethylene (HDPE) protects polyurethane thermal pipe outward.
A kind of urethane foam insulation pipe, comprise steel pipe, anticorrosive coat, urethane foam thermal insulation layer, low temperature resistant cracking resistance high-density polyethylene external protective pipe, reserved welding section, the excircle parcel anticorrosive coat of steel pipe, the excircle parcel urethane foam thermal insulation layer of anticorrosive coat, the excircle of urethane foam thermal insulation layer wraps up low temperature resistant cracking resistance high-density polyethylene external protective pipe; There is respectively reserved welding section at the two ends of steel pipe.
The beneficial effects of the utility model:
1, the urethane foam insulation pipe that has a low temperature resistant cracking resistance polyethylene outer protective pipe has good low temperature resistivity energy under-40 ℃ of left and right environment, the cracking rate of thermal insulation pipe is in 5%, cost, with conventional products cost is suitable at present, meets the construction requirement under low-temperature cold environment.
2, adopt ripe at present Prefabrication technique, without existing production technology is improved, there is good applicability.
Accompanying drawing explanation
When considered in conjunction with the accompanying drawings, by the detailed description with reference to below, can more completely understand better the utility model and easily learn wherein many advantages of following, but accompanying drawing described herein is used to provide further understanding of the present utility model, form a part of the present utility model, schematic description and description of the present utility model is used for explaining the utility model, do not form improper restriction of the present utility model, as schemed wherein:
Fig. 1 is structural representation of the present utility model.
Below in conjunction with drawings and Examples, the utility model is further illustrated.
Embodiment
Obviously, the many modifications and variations that those skilled in the art do based on aim of the present utility model belong to protection domain of the present utility model.
Embodiment 1: as shown in Figure 1, a kind of urethane foam insulation pipe, comprises steel pipe 1, anticorrosive coat 2, urethane foam thermal insulation layer 3, low temperature resistant cracking resistance high-density polyethylene external protective pipe 4, reserved welding section 5,
The excircle parcel anticorrosive coat 2 of steel pipe 1, the excircle parcel urethane foam thermal insulation layer 3 of anticorrosive coat 2, the excircle of urethane foam thermal insulation layer 3 wraps up low temperature resistant cracking resistance high-density polyethylene external protective pipe 4; There is respectively reserved welding section 5 at the two ends of steel pipe 1;
Wherein steel pipe 1 length 8～12m, pipe external diameter 50～1700mm, wall thickness 3～30mm, each long 150～200mm of reserved welding section 5 two ends, when anticorrosive coat 2 is 3 layers of polyethylene anticorrosive coat, its thickness is 1.8～6.0mm, anticorrosive coat 2 thickness are 200～800mm, and the thickness of urethane foam thermal insulation layer 3 is 30～150mm.
Embodiment 2: as shown in Figure 1, a kind of urethane foam insulation pipe, comprise steel pipe 1, anticorrosive coat 2, urethane foam thermal insulation layer 3, low temperature resistant cracking resistance high-density polyethylene external protective pipe, 4, reserved welding section 5, steel pipe 1 length 8～12m wherein, pipe external diameter 50～1700mm, wall thickness 3～30mm, each long 150～200mm of reserved welding section 4 two ends, when anticorrosive coat 2 is 3 layers of polyethylene anticorrosive coat, its thickness is 1.8～6.0mm, when anticorrosive coat 2 is liquid coating, its thickness is 200～800mm, clinkery epoxy powder coating thickness is 80～600mm, the thickness of urethane foam thermal insulation layer 3 is 30～150mm.
Steel pipe 1 length 12m, pipe external diameter 273mm, wall thickness 6mm, reserved welding section each long 200mm of 5 two ends, the thickness of clinkery epoxy powder coating is 300mm, the thickness of urethane foam thermal insulation layer 3 is 50mm.
A kind of urethane foam insulation pipe manufacture process with low temperature resistant cracking resistance polyethylene outer protective pipe is as follows:
The first step: be by after meeting PE80 level that GB requires and above polyethylene special-purpose material and evenly mixing with low temperature toughening modifying material by low temperature resistant cracking resistance polyethylene outer protective pipe, extrude the low temperature resistant cracking resistance high-density polyethylene external protective pipe 4 of formation;
Second step: by the outer surface derusting by sandblasting of steel pipe 1, at the outer surface anticorrosive coating 2 of steel pipe 1, then low temperature resistant cracking resistance high-density polyethylene external protective pipe 4 is enclosed within on the steel pipe 1 of finishing anticorrosive coat 2, reserves reserved welding section 5;
The 3rd step: cast polyurethane foam insulation 3 in the annular space of steel pipe 1 and 4 formation of low temperature resistant cracking resistance high-density polyethylene external protective pipe, through slaking, become after the assay was approved finished product thermal insulation pipe, tarpaulin can also be installed in two of thermal insulation pipe terminations as required.
As mentioned above, embodiment of the present utility model is explained, but as long as not departing from fact inventive point of the present utility model and effect can have a lot of distortion, this will be readily apparent to persons skilled in the art.Therefore, within such variation is also all included in protection domain of the present utility model.
Claims (2)
1. a urethane foam insulation pipe, it is characterized in that comprising steel pipe, anticorrosive coat, urethane foam thermal insulation layer, low temperature resistant cracking resistance high-density polyethylene external protective pipe, reserved welding section, the excircle parcel anticorrosive coat of steel pipe, the excircle parcel urethane foam thermal insulation layer of anticorrosive coat, the excircle of urethane foam thermal insulation layer wraps up low temperature resistant cracking resistance high-density polyethylene external protective pipe; There is respectively reserved welding section at the two ends of steel pipe.
2. a kind of urethane foam insulation pipe according to claim 1, it is characterized in that steel pipe length 8～12m, pipe external diameter 50～1700mm, wall thickness 3～30mm, each long 150～200mm of reserved welding section two ends, anticorrosive coat is 3 layers of polyethylene anticorrosive coats, 3 layers of polyethylene anticorrosive coat thickness are 1.8～6.0mm, and the thickness of urethane foam thermal insulation layer is 30～150mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320484885.8U CN203404562U (en) | 2013-08-09 | 2013-08-09 | Polyurethane foaming plastic thermal insulation pipeline |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320484885.8U CN203404562U (en) | 2013-08-09 | 2013-08-09 | Polyurethane foaming plastic thermal insulation pipeline |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203404562U true CN203404562U (en) | 2014-01-22 |
Family
ID=49940499
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320484885.8U Expired - Fee Related CN203404562U (en) | 2013-08-09 | 2013-08-09 | Polyurethane foaming plastic thermal insulation pipeline |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203404562U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN104448513A (en) * | 2014-10-28 | 2015-03-25 | 中国石油天然气集团公司 | Low-temperature resistant toughening modifier, outer protective material, thermal insulation pipe and preparation method |
| WO2024017360A1 (en) * | 2022-07-21 | 2024-01-25 | 上海科华热力管道有限公司 | Directly buried hot and cold water thermal insulation pipeline |
-
2013
- 2013-08-09 CN CN201320484885.8U patent/CN203404562U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN104448513A (en) * | 2014-10-28 | 2015-03-25 | 中国石油天然气集团公司 | Low-temperature resistant toughening modifier, outer protective material, thermal insulation pipe and preparation method |
| WO2024017360A1 (en) * | 2022-07-21 | 2024-01-25 | 上海科华热力管道有限公司 | Directly buried hot and cold water thermal insulation pipeline |
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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: 20140122 Termination date: 20210809 |