CN2856665Y - Single-layer thermal insulation tube - Google Patents
Single-layer thermal insulation tube Download PDFInfo
- Publication number
- CN2856665Y CN2856665Y CN 200520026467 CN200520026467U CN2856665Y CN 2856665 Y CN2856665 Y CN 2856665Y CN 200520026467 CN200520026467 CN 200520026467 CN 200520026467 U CN200520026467 U CN 200520026467U CN 2856665 Y CN2856665 Y CN 2856665Y
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- Prior art keywords
- layer
- thermal insulation
- coating
- utility
- pipe
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- Expired - Lifetime
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Abstract
The utility model discloses a single-layer thermal insulation tube comprising a pipeline, a thermal insulation layer, a weighted coating layer, an anticorrosion layer and a protecting layer. The anticorrosion layer, thermal insulation layer, protecting layer and weighted coating layer are orderly coated on the outer layer surface of the pipe, a reinforcing layer is provided in the weighted coating layer. The utility model structure cancels steel sleeve of original structure with greatly reduced raw materials cost, reduced pipe welding and inspecting quantity as well as reduced installing time of marine pipe laying.
Description
Technical field
The utility model relates to a kind of individual layer insulating structure, adapts to be used for submarine pipeline corrosion-resistant thermal insulation counterweight technology field.
Background technique
For the pipeline in the seabed that is laid in certain depth, rivers, lake and the marshland, the conventional way of the corrosion-resistant thermal insulation counterweight structure that adopts is at present: " steel bushing steel " insulation counterweight structure, i.e. " internal layer working steel tube+polyurethane insulation coating+heavy wall Steel Sleeve+outer three-layer polyethylene/polypropylene is anticorrosion ".
" steel bushing steel " structure has been used very long history on the corrosion-resistant thermal insulation pipeline of ocean, but there is following shortcoming in it:
(1) cost of tubing waste-steel pipe is higher, and outer Steel Sleeve only plays protection and the effect of part counterweight;
(2) welding and the check of the time waste-inside and outside two-layer steel pipe in the marine installation process, complex procedures expends man-hour, and expense is very high.
Summary of the invention
The purpose of this utility model is to provide a kind of cost that saves material, and shortens the marine installation time, the monolayer heat-insulating pipe of reliable performance.
The utility model is achieved by the following technical programs.
Monolayer heat-insulating pipe, it comprises pipeline, thermal insulation layer, weight coating, anticorrosive coat, and it also comprises protective coating, and described anticorrosive coat, thermal insulation layer, protective coating and weight coating are coated on the superficies of described pipeline successively, are provided with back-up coat in described weight coating.
The utility model structure has been cancelled the Steel Sleeve of original structure, has greatly reduced the cost of raw material, and has reduced the welding and the amount of inspection of steel pipe, has shortened the installation time of marine pipe-laying.
Description of drawings
Fig. 1 is the cross sectional representation of the utility model monolayer heat-insulating pipe;
The end structure schematic representation of Fig. 2 the utility model monolayer heat-insulating pipe.
Embodiment
Below in conjunction with accompanying drawing the utility model is further described.
Shown in accompanying drawing 1,2, monolayer heat-insulating pipe is formed:
(1) the steel pipe layer 1, and outer surface adopts derusting by sandblasting;
(2) anticorrosive coat 2, and it is anticorrosion to adopt clinkery epoxy powder to carry out bottom;
(3) thermal insulation layer 3, adopt the hard polyurethane foam insulation;
(4) heat preservation protective layer 4, adopt high density polyethylene (HDPE) or polypropylene jacket tube;
(5) concrete weighted coating 6, concrete is coated to the outside of high density polyethylene (HDPE) or polypropylene jacket insulation outer protective layer by injection or fashion of extrusion, form a kind of concrete layer with certain intensity and severe, wherein, in described concrete weighted coating 6, be provided with back-up coat 5, adopt steel net structure to reinforce;
(6) in steel pipe 1 termination tarpaulin 7 is installed, prevents thermal insulation layer water inlet inefficacy.
Take anti-slip processing between thermal insulation layer in this structure, heat preservation protective layer and the weight coating, its principle is: handle especially at the heat preservation protective layer internal surface, make it to reach usage requirement with the cohesive force of polyurethane foam; Adopt the surface roughening processing technology at the heat preservation protective layer outer surface, improved the anti-shearing force between two-layer, solved heat preservation protective layer effectively and produced the problem of relative slippage with concrete weighted coating.
Through monolayer heat-insulating pipe is tested, its shear strength has surpassed the 0.1N/mm of designing requirement
2In the pipelaying work process at sea, do not find to produce between a routine steel pipe and thermal insulation layer, thermal insulation layer and outer protective layer and outer protective layer and the concrete weighted coating phenomenon of relative slippage.This project cost-saved about 12%～15%.
Claims (3)
1. monolayer heat-insulating pipe, it comprises pipeline, thermal insulation layer, weight coating, anticorrosive coat, it is characterized in that: it also comprises protective coating, and described anticorrosive coat, thermal insulation layer, protective coating and weight coating are coated on the superficies of described pipeline successively, are provided with back-up coat in described weight coating.
2. monolayer heat-insulating pipe according to claim 1 is characterized in that: be intermolecular fixedly bonding between described thermal insulation layer and the described protective coating.
3. monolayer heat-insulating pipe according to claim 1 is characterized in that: the outer surface of described protective coating is a roughened surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520026467 CN2856665Y (en) | 2005-06-30 | 2005-06-30 | Single-layer thermal insulation tube |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520026467 CN2856665Y (en) | 2005-06-30 | 2005-06-30 | Single-layer thermal insulation tube |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2856665Y true CN2856665Y (en) | 2007-01-10 |
Family
ID=37599972
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200520026467 Expired - Lifetime CN2856665Y (en) | 2005-06-30 | 2005-06-30 | Single-layer thermal insulation tube |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2856665Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101776195A (en) * | 2010-03-12 | 2010-07-14 | 中国海洋石油总公司 | Polyurea elastomer waterproof sealing structure used for benthal single-layer heat-insulation pipe |
| CN101684880B (en) * | 2008-09-27 | 2011-07-06 | 中国海洋石油总公司 | Sealing structure of seabed single-layer insulating pipe joint |
| CN106439254A (en) * | 2016-11-21 | 2017-02-22 | 无锡金顶石油管材配件制造有限公司 | Petroleum heat insulation pipeline |
-
2005
- 2005-06-30 CN CN 200520026467 patent/CN2856665Y/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101684880B (en) * | 2008-09-27 | 2011-07-06 | 中国海洋石油总公司 | Sealing structure of seabed single-layer insulating pipe joint |
| CN101776195A (en) * | 2010-03-12 | 2010-07-14 | 中国海洋石油总公司 | Polyurea elastomer waterproof sealing structure used for benthal single-layer heat-insulation pipe |
| CN106439254A (en) * | 2016-11-21 | 2017-02-22 | 无锡金顶石油管材配件制造有限公司 | Petroleum heat insulation pipeline |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: CNOOC ENERGY TECHNOLOGY + SERVICES LIMITED Free format text: FORMER OWNER: OILFIELD CONSTRUCTION ENGINEERING BRANCH COMPANY OF CHINA NATIONAL OFFSHORE OIL BASE CO., LTD. |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: 100027 DONGCHENG, BEIJING TO: 100016 DONGCHENG, BEIJING |
|
| TR01 | Transfer of patent right |
Effective date of registration: 20110929 Address after: 100016, CNOOC building, No. 25 North Main Street, Dongcheng District, Beijing, Chaoyangmen Co-patentee after: CNOOC Energy Development Co., Ltd. Patentee after: China National Offshore Oil Corporation Address before: 100027 Beijing city Dongcheng District Dongzhimen Street No. 6 Co-patentee before: CNOOC Oilfield Co., Ltd. Patentee before: China National Offshore Oil Corporation |
|
| CX01 | Expiry of patent term |
Expiration termination date: 20150630 Granted publication date: 20070110 |
|
| EXPY | Termination of patent right or utility model |