CN2742256Y - Composite heat insulation directly buried pipeline - Google Patents
Composite heat insulation directly buried pipeline Download PDFInfo
- Publication number
- CN2742256Y CN2742256Y CN 200420029626 CN200420029626U CN2742256Y CN 2742256 Y CN2742256 Y CN 2742256Y CN 200420029626 CN200420029626 CN 200420029626 CN 200420029626 U CN200420029626 U CN 200420029626U CN 2742256 Y CN2742256 Y CN 2742256Y
- Authority
- CN
- China
- Prior art keywords
- pipe
- buried pipeline
- directly buried
- heat insulation
- density polyethylene
- 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.)
- Expired - Fee Related
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Abstract
The utility model relates to a composite heat insulation directly buried pipeline, which is characterized in that the composite heat insulation directly buried pipeline is combined by an inner pipe, a polyurethane heat-insulating layer and an outer pipe. The polyurethane heat-insulating layer is made via the foaming technology of the polyurethane, the polyurethane heat-insulating layer is positioned between the inner pipe and the outer pipe, and the polyurethane heat-insulating layer is tightly combined with the inner pipe and the outer pipe. The inner pipe is the circular pipe made of the fiber reinforcement glass epoxy, the outer pipe is the circular pipe made of the high-density polyethylene, and the outer layer pipe is the circular pipe made of the high-density polyethylene. The high-density polyethylene can be modified by adding inorganic dust, and then, the composite heat insulation directly buried pipeline has the advantages of low cost, small engineering quantity, convenient operation, and short installation time.
Description
Technical field
The utility model relates to a kind of underground fluid-transporting tubing that directly is laid in, and has performances such as heat-resisting, anticorrosion, that the spreadable life is long, is applicable to oil, chemical field, is specially adapted to the conveying of geothermal water,
Background technique
In the prior art, it is underground that length adopts steel pipe to be laid in apart from fluid-transporting tubing more, steel pipe is than great, transportation and lay the comparison difficulty, thermal conductivity, the thermal expansion coefficient of steel pipe are bigger, need additional thermal insulation to realize during heat-insulation and heat-preservation, and the thermal insulation layer fitness for purpose is thicker, the steel pipe corrosion-resistant especially when geothermal water conveying, is rich in cl, Fe in the hot water in addition
2+Reduced its service life greatly, and it is little to adopt in the glass fibre reinforced plastics that glass fibre strengthens pipe to have in light weight, heat-resisting a, corrosion resistant, thermal conductivity, thermal expansion coefficient, the characteristics that service life is long, the bonding strength of pipe is better than the bonding strength of the steel pipe of thermal insulation layer in this external thermal insulation and the glass fibre reinforced plastics, prevents to come off and influences heat insulation effect
Summary of the invention
The purpose of this utility model is to solve the technical problem that exists in the above-mentioned background technology, and a kind of complex heat-preservation directly buried pipeline is provided.
For realizing above-mentioned technical purpose, the utility model adopts following technological scheme: a kind of complex heat-preservation directly buried pipeline, it is characterized in that by interior pipe, polyurethane insulation coating and outer tube are composited, polyurethane insulation coating is made by polyurethane foam technology, between inner and outer pipes, and it is compound closely with inner and outer pipes, pipe is the fiber reinforcement glass cylindrical steel tube in described, outer tube is the high density polyethylene (HDPE) pipe, external pipe is the high density polyethylene (HDPE) pipe, high density polyethylene (HDPE) adds inorganic particle and carries out modification, the utility model is rational in infrastructure, light weight, the intensity height, manufacturing, the transportation and bury underground all very convenient, the good heat insulating of the compound directly buried pipeline of glass fibre reinforced plastics and corrosion-resistant was 50 years working life.
The thermal insulation layer that adopts polyurethane foam technology to make, heat-transfer coefficient is little, and foaming has prevented heat transfer, has heat insulation function, and effect obviously is better than pipe insulation materials such as common rock wool, perlite,
Among existing patent CN 2234029 Y, it is that outer tube is similarly Glass Steel Tube outside the polyurethane foam that interior pipe adopts the glass fibre reinforced plastics thermal insulation layer, it is outer tube that the utility model adopts high density polyethylene (HDPE), makes insulation pipe have toughness, is difficult for broken, anti-drawing stretched, and anti-cracking adds mineral filler in high density polyethylene (HDPE), as calcium carbonate, silica etc., can obviously strengthen above-mentioned performance, add 2% carbon black simultaneously, have ageing-resistant, characteristics such as UV resistant during open-air the placement
Adopt method for directly burying to lay this pipeline, its engineering work load is little, and engineering cost is low, and the purpose of this utility model promptly is to obtain a kind of high insulating effect, corrosion-resistant, heat-resisting, difficult broken, easy to use direct-burried conveyance conduit.
Description of drawings:
Accompanying drawing 1 is the structural representation of the utility model complex heat-preservation directly buried pipeline;
Accompanying drawing 2 is the sectional view of composite thermal pipeline.
Embodiment:
Be further described below in conjunction with the technical characteristics of specific embodiment the utility model glass fibre reinforced plastics complex heat-preservation directly buried pipeline,
With reference to the accompanying drawings 1,2, the utility model complex heat-preservation directly buried pipeline is composited by interior pipe, outer tube and thermal insulation layer, interior pipe 1 is the glass fibre reinforced plastics pipe, and its winding angle is 0-90 °, is evenly distributed with micro-recesses 2 on its outer wall, the groove radius R is 0.1-0.25mm, flute pitch is 10-50mm, and outer tube 3 is the high density polyethylene (HDPE) pipe, and thermal insulation layer 4 is a polyurethane material, be sandwiched between the inner and outer pipe, and compound closely with outer tube.
Claims (2)
1. a complex heat-preservation directly buried pipeline is characterized in that being composited by interior pipe, polyurethane insulation coating and outer tube, and polyurethane insulation coating is between inner and outer pipes, and it is compound closely with inner and outer pipes, pipe is the fiber reinforcement glass cylindrical steel tube in described, and outer tube is the high density polyethylene (HDPE) pipe
2. complex heat-preservation directly buried pipeline as claimed in claim 1 is characterized in that: pipe in the described fiber reinforcement glass steel, and its glass fibre winding angle is 0-90 °, being evenly distributed with the micro-recesses spacing on its outer wall is 10-50mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420029626 CN2742256Y (en) | 2004-08-27 | 2004-08-27 | Composite heat insulation directly buried pipeline |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420029626 CN2742256Y (en) | 2004-08-27 | 2004-08-27 | Composite heat insulation directly buried pipeline |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2742256Y true CN2742256Y (en) | 2005-11-23 |
Family
ID=35477725
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200420029626 Expired - Fee Related CN2742256Y (en) | 2004-08-27 | 2004-08-27 | Composite heat insulation directly buried pipeline |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2742256Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113097943A (en) * | 2021-03-24 | 2021-07-09 | 来安县友鹏交通设备有限公司 | Cable protection pipe with multilayer structure and production method thereof |
-
2004
- 2004-08-27 CN CN 200420029626 patent/CN2742256Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113097943A (en) * | 2021-03-24 | 2021-07-09 | 来安县友鹏交通设备有限公司 | Cable protection pipe with multilayer structure and production method thereof |
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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 |