CN203731006U - Repairing composite sheet for buried steel pipeline welds - Google Patents
Repairing composite sheet for buried steel pipeline welds Download PDFInfo
- Publication number
- CN203731006U CN203731006U CN201320464779.3U CN201320464779U CN203731006U CN 203731006 U CN203731006 U CN 203731006U CN 201320464779 U CN201320464779 U CN 201320464779U CN 203731006 U CN203731006 U CN 203731006U
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- CN
- China
- Prior art keywords
- composite sheet
- repaired mouth
- steel pipeline
- buried steel
- adhesive layer
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- 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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- Protection Of Pipes Against Damage, Friction, And Corrosion (AREA)
Abstract
A repairing composite sheet for buried steel pipeline welds is composed of a polyethylene layer and an adhesive layer; the adhesive layer and the polyethylene layer are integrated by adhering. The polyethylene layer is 2.2mm-3.3mm in thickness. The adhesive layer is 300 micrometers to 400 micrometers in thickness. The width W of the repairing composite sheet is (a+30-50) mm; the length L thereof is (phi*3.14+30-50) mm; a is the length of a steel pipeline weld; phi is the outside diameter of the steel pipeline covered with the anti-corrosion layer. The repairing composite sheet has excellent strength and adhesion, and the repairing composite sheet can be completely fitted to steel pipeline anti-corrosion material.
Description
Technical field
The utility model belongs to steel pipe preventing corrosion of repaired mouth field, particularly a kind of buried steel pipeline weld bond repaired mouth sheet.
Background technique
Along with the fast development of China's oil, petrochemical industry, buried steel pipeline is more and more, but the repaired mouth problem at buried steel pipeline weld bond place fails effectively to be solved all the time.The weld bond of buried steel pipeline adopts binding tape, shrink belt etc. to carry out repaired mouth conventionally at present, but because the factors such as insufficient strength often cause the anticorrosion inefficacy at repaired mouth place.Since anticorrosion from domestic and international large-scale popularization polyethylene in 1997 carries out buried steel pipeline, the preventing corrosion of repaired mouth at buried steel pipeline weld bond place is processed because the polyethylene anticorrosive coating lap-joint of repaired mouth composite material and steel pipe cannot merge completely, easily produce and stick up skin phenomenon, causes the Difficulty of polyethylene anticorrosion repaired mouth.
Model utility content
The purpose of this utility model is to overcome the deficiencies in the prior art, and a kind of buried steel pipeline weld bond repaired mouth composite sheet is provided, and this repaired mouth composite sheet has good intensity, bonding force, can realize the fusion completely of repaired mouth composite sheet and steel pipeline anti-corrision material.
Buried steel pipeline weld bond repaired mouth composite sheet described in the utility model, is comprised of polyethylene layer and adhesive layer, and adhesive layer and polyethylene layer are integral by adhesive bond.
The thickness of described polyethylene layer is 2.2mm ~ 3.3mm, and the thickness of described adhesive layer is 300 μ m ~ 400 μ m.
According to take structure and the size of the steel pipe weld bond that polyethylene is anticorrosive coat, the width W of repaired mouth composite sheet described in the utility model=(a+30 ~ 50) mm, length L=(Φ * 3.14+30 ~ 50) mm, wherein, a is the length of steel pipe repaired mouth, and Φ is the external diameter after the coated anticorrosive coat of steel pipe.
The performance index of polyethylene layer described in the utility model, adhesive are shown in following table 1, table 2.
The performance index of table 1 polyethylene layer
The performance index of table 2 adhesive
The preparation method of repaired mouth composite sheet described in the utility model: prepare respectively polyethylene layer, adhesive layer by extruder, then polyethylene layer, adhesive layer are combined into one by hot pressing.
The utlity model has following beneficial effect:
1, the preventing corrosion of repaired mouth that the utility model is buried steel pipeline weld bond place provides a kind of novel repaired mouth composite sheet.
2, the polyethylene layer of repaired mouth composite sheet described in the utility model is identical with the material of buried steel pipeline anticorrosive coat, adhesive layer function admirable, and size design is reasonable, thereby can merge completely with the lap-joint of buried steel pipeline anticorrosive coat, solve lap-joint and easily produced the problem of sticking up skin.
3, repaired mouth composite sheet described in the utility model can realize the winding of steel pipe fast, easy to use, with low cost, is easy to promote the use of.
Accompanying drawing explanation
Fig. 1 is the structural representation of repaired mouth composite sheet described in the utility model.
Fig. 2 is the A-A sectional drawing of Fig. 1.
Fig. 3 is the structural representation of buried steel pipeline and weld bond thereof.
In figure, 1-repaired mouth composite sheet, 1-1-polyethylene layer, 1-2-adhesive layer, 2-steel pipe, 3-pipeline anticorrosion coating, 4-weld bond, 5-repaired mouth, the length of a-steel pipe repaired mouth, the length of L-repaired mouth composite sheet, the width of W-repaired mouth composite sheet, the external diameter after the coated anticorrosive coat of Φ-steel pipe.
Embodiment
The utility model is described in further detail by the following examples and by reference to the accompanying drawings.
In following embodiment, it is the polyethylene making (manufacturing enterprise: Mianyang Orient Company and Deyang peace Fael S.A.) of EMA or SYFF-01 that polyethylene layer is selected model, and it is the adhesive making (manufacturing enterprise: Guangzhou Lu Shan company) of L-5R that adhesive layer is selected model.
Embodiment 1
In the present embodiment, the structure of buried steel pipeline weld bond use repaired mouth composite sheet as shown in Figure 1 and Figure 2, is comprised of polyethylene layer 1-1 and adhesive layer 1-2, and adhesive layer and polyethylene layer are integral by adhesive bond.The thickness of described polyethylene layer is 3mm, and the thickness of described adhesive layer is 300 μ m.
The present embodiment repaired mouth composite sheet is anticorrosion for weld bond 4 places of the buried steel pipeline 2 shown in Fig. 3, external diameter Φ after the coated anticorrosive coat 3 of described steel pipe is 219 mm, the length a of repaired mouth 5 is 220mm, therefore length L=(219 * 3.14+40) mm=728 mm of repaired mouth composite sheet, the mm=260 mm of the width W of repaired mouth composite sheet=(220+40).
Embodiment 2
In the present embodiment, the structure of buried steel pipeline weld bond use repaired mouth composite sheet as shown in Figure 1 and Figure 2, is comprised of polyethylene layer 1-1 and adhesive layer 1-2, and adhesive layer and polyethylene layer are integral by adhesive bond.The thickness of described polyethylene layer is 2.2mm, and the thickness of described adhesive layer is 320 μ m.
The present embodiment repaired mouth composite sheet is anticorrosion for weld bond 4 places of the buried steel pipeline 2 shown in Fig. 3, external diameter Φ after the coated anticorrosive coat 3 of described steel pipe is 159 mm, the length a of repaired mouth 5 is 220mm, therefore length L=(159 * 3.14+30) mm=530 mm of repaired mouth composite sheet, mm=250 mm of the width W of repaired mouth composite sheet=(220+30).
Embodiment 3
In the present embodiment, the structure of buried steel pipeline weld bond use repaired mouth composite sheet as shown in Figure 1 and Figure 2, is comprised of polyethylene layer 1-1 and adhesive layer 1-2, and adhesive layer and polyethylene layer are integral by adhesive bond.The thickness of described polyethylene layer is 3.3mm, and the thickness of described adhesive layer is 400 μ m.
The present embodiment repaired mouth composite sheet is anticorrosion for weld bond 4 places of the buried steel pipeline 2 shown in Fig. 3, external diameter Φ after the coated anticorrosive coat 3 of described steel pipe is 426 mm, the length a of repaired mouth 5 is 260 mm, therefore length L=(426 * 3.14+50) mm=1388 mm of repaired mouth composite sheet, the mm=310 mm of the width W of repaired mouth composite sheet=(260+50).
Claims (3)
1. buried steel pipeline weld bond repaired mouth composite sheet, it is characterized in that this repaired mouth composite sheet (1) is comprised of polyethylene layer (1-1) and adhesive layer (1-2), adhesive layer and polyethylene layer are integral by adhesive bond, the thickness of described polyethylene layer is 2.2mm～3.3mm, and the thickness of described adhesive layer is 300 μ m～400 μ m.
2. buried steel pipeline weld bond repaired mouth composite sheet according to claim 1, is characterized in that width (W)=(a+30～50) mm of described repaired mouth composite sheet, and wherein, a is the length of steel pipe repaired mouth.
3. according to buried steel pipeline weld bond repaired mouth composite sheet described in claim 1 or 2, it is characterized in that length (L)=(Φ * 3.14+30～50) mm of described repaired mouth composite sheet, wherein, Φ is the external diameter after the coated anticorrosive coat of steel pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320464779.3U CN203731006U (en) | 2013-07-31 | 2013-07-31 | Repairing composite sheet for buried steel pipeline welds |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320464779.3U CN203731006U (en) | 2013-07-31 | 2013-07-31 | Repairing composite sheet for buried steel pipeline welds |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203731006U true CN203731006U (en) | 2014-07-23 |
Family
ID=51201081
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320464779.3U Expired - Fee Related CN203731006U (en) | 2013-07-31 | 2013-07-31 | Repairing composite sheet for buried steel pipeline welds |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203731006U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104500919A (en) * | 2014-12-17 | 2015-04-08 | 四川金发科技发展有限公司 | Novel joint coated structure |
| WO2016095766A1 (en) * | 2014-12-17 | 2016-06-23 | 四川金发科技发展有限公司 | Pipeline-joint coating machine, construction method and novel pipeline-joint coating structure |
-
2013
- 2013-07-31 CN CN201320464779.3U patent/CN203731006U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104500919A (en) * | 2014-12-17 | 2015-04-08 | 四川金发科技发展有限公司 | Novel joint coated structure |
| WO2016095766A1 (en) * | 2014-12-17 | 2016-06-23 | 四川金发科技发展有限公司 | Pipeline-joint coating machine, construction method and novel pipeline-joint coating structure |
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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: 20140723 Termination date: 20210731 |