CN202580335U - Direct-buried thermal insulation pipe with inner anti-corrosion layer - Google Patents
Direct-buried thermal insulation pipe with inner anti-corrosion layer Download PDFInfo
- Publication number
- CN202580335U CN202580335U CN 201220239790 CN201220239790U CN202580335U CN 202580335 U CN202580335 U CN 202580335U CN 201220239790 CN201220239790 CN 201220239790 CN 201220239790 U CN201220239790 U CN 201220239790U CN 202580335 U CN202580335 U CN 202580335U
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- thermal insulation
- corrosion
- pipe
- resistant coating
- interior
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Abstract
The utility model provides a direct-buried thermal insulation pipe with an inner anti-corrosion layer, and the direct-buried thermal insulation pipe comprises an outer pipe, a thermal insulation layer, an inner pipe and the anti-corrosion layer, wherein the inner pipe is sheathed in the outer pipe; the thermal insulation layer is arranged between the outer pipe and the inner pipe; and the anti-corrosion layer is arranged between the thermal insulation layer and the inner pipe and attached to the outer wall of the inner pipe. According to the utility model, the inner anti-corrosion layer is capable of effectively protecting the pipe from corrosion, so that the anti-corrosion capability is strengthened, the service life of the pipe is prolonged and the practicability is better.
Description
Technical field
The utility model relates to directly-buried thermal insulation pipes, particularly a kind of directly-buried thermal insulation pipes with interior corrosion-resistant coating.
Background technique
At present, directly-buried thermal insulation pipes is extensively applied to every field, as is used for the insulation and the cold insulation engineering of industrial pipelines such as central heating pipe, central air-conditioner pipeline, chemical industry, medicine, carries the pipework of liquids and gases.But in use, there is following problem in direct-buried insulated pipe big city: when directly-buried thermal insulation pipes when carrying liquid, gas or other medium, after long-term the use, the steel pipe in the pipeline receives the corrosion of liquid or gas easily; Because the self-defect of jointing welding procedure makes the jointing of pipeline also be corroded easily; Simultaneously, have certain sewage below the face of land and infilter pipe interior, equally also can cause pipeline to be corroded from pipe joint; And the As time goes on evaporation of moisture in the sewage; The hot effect of guarantor in conjunction with directly-buried thermal insulation pipes just had originally makes concentration of wastewater further improve, and aggravates sewage more to Corrosion of Pipeline; Have a strong impact on the quality of pipeline, reduced the working life of pipeline.In addition, after pipeline was etched to a certain degree, fluids such as the liquid of conveying or gas will ooze out outside the pipe, in the damnous while, also soil were produced certain destruction, caused environment to be polluted.
The model utility content
The purpose of the utility model is the deficiency that solves above-mentioned technology, and the direct-buried insulated pipe of corrosion-resistant coating in a kind of having is provided.The interior corrosion-resistant coating that the utility model provides, it can effectively protect pipeline not to be corroded, and has strengthened the ability of opposing corrosion, and then has prolonged the working life of pipeline, has improved practicability.
For solving the problems of the technologies described above, the technological scheme that the utility model provided is: a kind of directly-buried thermal insulation pipes with interior corrosion-resistant coating, comprise outer tube, thermal insulation layer and interior pipe, and it also comprises corrosion-resistant coating; Pipe box is contained in the outer tube in said, and said thermal insulation layer is arranged between outer tube and the interior pipe; Said corrosion-resistant coating is arranged between thermal insulation layer and the interior pipe, and attached on the outer wall of inner tube.
Further, said outer tube material is a polyethylene.
Further, said outer external diameter of pipe is DN50～DN1400.
Further, said thermal insulation layer material is a polyurethane.
Further, said corrosion-resistant coating material is an anticorrosive paint.
Further, said outer tube thickness is 5mm---20mm.
Further, said insulation layer thickness is 30mm---70mm.
Further, said corrosion-resistant coating thickness is 0.2mm---0.4mm.
The technique effect of the utility model has: the directly-buried thermal insulation pipes that has interior corrosion-resistant coating that the utility model provides; Set up one deck corrosion-resistant coating on the tube wall of pipe in it; Can prevent effectively that sewage that pipeline is outer etc. from getting into pipe joint and corrosion pipeline; And can avoid the fluid in the pipeline to ooze out outside the body, improve the working life of pipeline, also protect environment simultaneously.
Description of drawings
Fig. 1 is the structural representation of the utility model direct-buried insulated pipe;
Wherein: 1 outer tube, 2 thermal insulation layers, 3 corrosion-resistant coatings, 4 interior pipes.
Embodiment
Embodiment below in conjunction with description of drawings the utility model.
As shown in Figure 1, the direct-buried insulated pipe of corrosion-resistant coating comprises outer tube 1, thermal insulation layer 2 and interior pipe 4 in a kind of having, and thermal insulation layer 2 is arranged between outer tube 1 and the interior pipe 4, plays the insulation effect to tube fluid; Also comprise corrosion-resistant coating 3, said corrosion-resistant coating 3 is arranged between thermal insulation layer 2 and the interior pipe 4, and on the outer wall attached to interior pipe 4, to have improved the corrosion resistance of interior pipe 4; Wherein, The material of outer tube 1 preferably is set to polyethylene; The thermal insulation layer material preferably is set to polyurethane, and corrosion-resistant coating 3 materials preferably are set to anticorrosive paint, and the thickness of outer tube 1 preferably is set to 5mm---20mm; The thickness of thermal insulation layer 2 preferably is set to 30mm---70mm, and the thickness of corrosion-resistant coating 3 preferably is set to 0.2mm---0.4mm.
The utility model is owing to adhered to one deck corrosion-resistant coating 3 on the outer wall of interior pipe 4, the decay resistance of pipe 4 significantly improves in making, even mouth of pipe place is because welding procedure defective etc. are former thereby cause managing outer sewage infiltration jointing; Also can be under the protection of corrosion-resistant coating 3; Make sewage manage 4 in can't directly touching, and then effectively avoided the corrosion of sewage, improved its working life for interior pipe 4; And; After directly-buried thermal insulation pipes has used certain time limit, when interior pipe 4 erodes to a certain degree, under the corrosion-resistant coating effect that interior pipe 4 outer walls are provided with; Can prevent effectively that tube fluid from oozing out outside the pipe, and then avoid to the corrosion of managing outer thermal insulation layer etc. with to managing the destruction of outer soil.
The above; Preferable case study on implementation for the utility model; It is not any restriction that the utility model is made; Every any simple modification, change and equivalent structure of above case study on implementation being done according to the utility model technical spirit changes, and all still belongs in the protection domain of the utility model technological scheme.
Claims (7)
1. the directly-buried thermal insulation pipes of the interior corrosion-resistant coating of band comprises outer tube (1), thermal insulation layer (2) and interior pipe (4), and it is characterized in that: it also comprises corrosion-resistant coating (3); Pipe box is contained in the outer tube (1) in said, and said thermal insulation layer (2) is arranged between outer tube (1) and the interior pipe (4); Said corrosion-resistant coating (3) is arranged between thermal insulation layer (2) and the interior pipe (4), and attached on the outer wall of inner tube.
2. the directly-buried thermal insulation pipes of corrosion-resistant coating in according to claim 1 having, it is characterized in that: the material of said outer tube (1) is a polyethylene.
3. according to the described directly-buried thermal insulation pipes that has interior corrosion-resistant coating of claim, it is characterized in that: the material of said thermal insulation layer (2) is a polyurethane.
4. according to the described directly-buried thermal insulation pipes that has interior corrosion-resistant coating of claim, it is characterized in that: the material of said corrosion-resistant coating (3) is an anticorrosive paint.
5. according to the described directly-buried thermal insulation pipes that has interior corrosion-resistant coating of claim, it is characterized in that: the thickness of said outer tube (1) is set to 5mm---20mm.
6. according to the described directly-buried thermal insulation pipes that has interior corrosion-resistant coating of claim, it is characterized in that: the thickness of said thermal insulation layer (2) is set to 30mm---70mm.
7. according to the described directly-buried thermal insulation pipes that has interior corrosion-resistant coating of claim, it is characterized in that: the thickness of said corrosion-resistant coating (3) is set to 0.2mm---0.4mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220239790 CN202580335U (en) | 2012-05-25 | 2012-05-25 | Direct-buried thermal insulation pipe with inner anti-corrosion layer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220239790 CN202580335U (en) | 2012-05-25 | 2012-05-25 | Direct-buried thermal insulation pipe with inner anti-corrosion layer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202580335U true CN202580335U (en) | 2012-12-05 |
Family
ID=47249745
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220239790 Expired - Lifetime CN202580335U (en) | 2012-05-25 | 2012-05-25 | Direct-buried thermal insulation pipe with inner anti-corrosion layer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202580335U (en) |
-
2012
- 2012-05-25 CN CN 201220239790 patent/CN202580335U/en not_active Expired - Lifetime
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 100081 Beijing City, Haidian District Zhongguancun South Street No. 12, building 2, 1026 day International Center Patentee after: Beijing China Electric Power Group Co., Ltd. Address before: 100081 Beijing City, Haidian District Zhongguancun South Street No. 12, building 2, 1026 day International Center Patentee before: Beijing Zhongdian Lianzhong Power Technology Co., Ltd. |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20121205 |