CN2926727Y - Anticorrosive balance-weight pipe with epoxy-polyurea double-layer composite structure - Google Patents
Anticorrosive balance-weight pipe with epoxy-polyurea double-layer composite structure Download PDFInfo
- Publication number
- CN2926727Y CN2926727Y CN 200620025958 CN200620025958U CN2926727Y CN 2926727 Y CN2926727 Y CN 2926727Y CN 200620025958 CN200620025958 CN 200620025958 CN 200620025958 U CN200620025958 U CN 200620025958U CN 2926727 Y CN2926727 Y CN 2926727Y
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- layer
- antisepsis
- epoxy
- polyurea
- layers
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Abstract
The utility model relates to an antisepsis weight tube with a compound structure of two layers of epoxy and polyurea that is comprised of a tube and an antisepses layer and a concrete weight layer that wrap the tube; wherein, the antisepsis layer is comprised of two layers which are a welding epoxy antisepsis bottom layer and a polyurea flexible antisepsis surface layer. The utility model replaces the previous antisepsis structure layer of three layers with a compound structure with two layers of epoxy and polyurea, thereby enhancing the performance of antisepsis construction and shortening the finishing time. As the structure of antisepsis layer is made of material with active functional groups, the peeling-proof performance of the antisepsis layer is greatly enhanced, and the combination performance of the concrete weight layer can be also increased, thus the tube can be prevented from dropping during the tube installation. Besides, the utilization of cementing compound in the antisepsis structure of three layers is avoided. The utilization of an epoxy coat at the bottom layers is also beneficial for increasing the entire performance of high temperature resistance of the coat, meanwhile, the impact resistance capacity of the coat is improved due to the utilization of the polyurea flexible antisepsis layer.
Description
Technical field
The utility model relates to a kind of epoxy-polyurea two-layer composite anti-corrosion pipe, relates in particular to the anticorrosion counterweight pipe of a kind of epoxy-polyurea two-layer composite, adapts to be used for the anticorrosion counterweight technology of submarine pipeline 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 anticorrosion counterweight structure that adopts is at present: anticorrosion counterweight structure, i.e. " internal layer working steel tube+outer three-layer polyethylene/polypropylene anticorrosive coat+concrete weighted coating ".
This structure has had long history on the corrosion-resistant thermal insulation pipeline of ocean, but three stratas second/propylene class anticorrosive coat is not very good with combining of concrete weighted coating.
Summary of the invention
The purpose of this utility model is to provide a kind of anticorrosion counterweight pipe of epoxy-polyurea two-layer composite that improves the whole antiseptic property of pipeline, adopts this anticorrosion counterweight pipe can strengthen the anticorrosion construction ability, has shortened being coated with ETL estimated time of loading.
The utility model is achieved by the following technical programs.
The anticorrosion counterweight pipe of epoxy-polyurea two-layer composite, it comprises pipeline, is coated on anticorrosive coat and concrete weighted coating on the described pipeline successively, and described anticorrosive coat is two-layer, is made up of anticorrosion bottom of fusion bonded epoxy and the anticorrosion surface layer of SPUA.
The utility model structure has replaced former three layers of anticorrosion structure with epoxy-polyurea two-layer composite anticorrosive coat, has strengthened the anticorrosion construction ability, has shortened being coated with ETL estimated time of loading.Because this anti-corrosion layer structure all is made up of the material that contains active function groups, therefore strong raising the anti-sled of anticorrosive coat shell property, also improved binding ability with concrete weighted coating and helped resisting slippage in the piping erection process.And cancel the use of three layers of adhesive in the anticorrosion structure.The use of bottom epoxy coating also helps improving the whole resistance to high temperature of coating, has also improved the shock-resistant ability of coating simultaneously because of the use of SPUA anticorrosive coat.
Description of drawings
Fig. 1 is the anticorrosion counterweight pipe of an epoxy-polyurea two-layer composite of the present utility model cross sectional representation;
Fig. 2 is the anticorrosion counterweight pipe end of an epoxy-polyurea two-layer composite of the present utility model structural representation.
Embodiment
Below in conjunction with accompanying drawing the utility model is further described.
As shown in Figure 1, 2:
(1) the steel pipe layer 1, and outer surface adopts derusting by sandblasting;
(2) be coated on steel pipe layer 1 anticorrosion bottom 2 outward, anticorrosion bottom 2 is the fusion bonded epoxy coating;
(3) anticorrosion surface layer 3 is coated in anticorrosion bottom 2 surfaces, and anticorrosion surface layer 3 is a polyurea elastomer coating;
(4) concrete weighted coating 5, by spraying or fashion of extrusion is coated to the outside of SPUA protective layer with concrete, form a kind of concrete layer, wherein with certain intensity and severe, in described concrete weighted coating 5, preferably be provided with back-up coat 4, adopt steel net structure to reinforce;
Through the testing property to anticorrosion counterweight pipe, the shear strength between each layer has all surpassed the 0.1N/mm of designing requirement
2
Claims (2)
1. the anticorrosion counterweight pipe of epoxy-polyurea two-layer composite, it comprises pipeline, is coated on anticorrosive coat and concrete weighted coating on the described pipeline successively, it is characterized in that: described anticorrosive coat is two-layer, is made up of anticorrosion bottom of fusion bonded epoxy and the anticorrosion surface layer of SPUA.
2. anticorrosion counterweight pipe according to claim 1 is characterized in that: be provided with back-up coat in described concrete weighted coating.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620025958 CN2926727Y (en) | 2006-04-29 | 2006-04-29 | Anticorrosive balance-weight pipe with epoxy-polyurea double-layer composite structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620025958 CN2926727Y (en) | 2006-04-29 | 2006-04-29 | Anticorrosive balance-weight pipe with epoxy-polyurea double-layer composite structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2926727Y true CN2926727Y (en) | 2007-07-25 |
Family
ID=38280972
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200620025958 Expired - Lifetime CN2926727Y (en) | 2006-04-29 | 2006-04-29 | Anticorrosive balance-weight pipe with epoxy-polyurea double-layer composite structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2926727Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106269446A (en) * | 2016-10-07 | 2017-01-04 | 柳州欧维姆机械股份有限公司 | High anticorrosion major diameter high-strength screw-thread steel rod and preparation method thereof |
| CN112210066A (en) * | 2019-07-10 | 2021-01-12 | 天津大学 | Composite polyurea material, preparation method thereof and double-layer anti-corrosion structure based on composite polyurea material |
-
2006
- 2006-04-29 CN CN 200620025958 patent/CN2926727Y/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106269446A (en) * | 2016-10-07 | 2017-01-04 | 柳州欧维姆机械股份有限公司 | High anticorrosion major diameter high-strength screw-thread steel rod and preparation method thereof |
| CN112210066A (en) * | 2019-07-10 | 2021-01-12 | 天津大学 | Composite polyurea material, preparation method thereof and double-layer anti-corrosion structure based on composite polyurea material |
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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 | ||
| CP03 | Change of name, title or address |
Address after: 6, Xiaozhi street, Dongzhi gate, Dongcheng District, Beijing, zip code: 100027 Co-patentee after: CNOOC Energy Development Co., Ltd. Patentee after: China National Offshore Oil Corporation Address before: 6, Xiaozhi street, Dongzhi gate, Dongcheng District, Beijing, zip code: 100027 Co-patentee before: CNOOC Oil Base Group Co., Ltd. Patentee before: China National Offshore Oil Corporation |
|
| CX01 | Expiry of patent term |
Granted publication date: 20070725 |
|
| EXPY | Termination of patent right or utility model |