CN203023674U - Composite pipe without coating layer at joint - Google Patents
Composite pipe without coating layer at joint Download PDFInfo
- Publication number
- CN203023674U CN203023674U CN 201320052143 CN201320052143U CN203023674U CN 203023674 U CN203023674 U CN 203023674U CN 201320052143 CN201320052143 CN 201320052143 CN 201320052143 U CN201320052143 U CN 201320052143U CN 203023674 U CN203023674 U CN 203023674U
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- corrosion
- short tube
- resistant short
- resistant
- pipe
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Abstract
The utility model relates to the technical field of steel pipelines, and discloses a composite pipe without a coating layer at a joint. The composite pipe comprises a conveying steel pipe, wherein a left annular mounting groove is formed in the inner wall of the left end of the conveying steel pipe; a left corrosion-resistant short pipe is fixedly arranged in the left annular mounting groove; a left annular groove is formed in the inner wall of the middle part of the left corrosion-resistant short pipe; a right annular mounting groove is formed in the inner wall of the right end of the conveying steel pipe; a right corrosion-resistant short pipe is fixedly arranged in the right annular mounting groove; and a right annular groove is formed in the inner wall of the middle part of the right corrosion-resistant short pipe. The composite pipe has a reasonable and compact structure and is convenient to use; and the left corrosion-resistant short pipe, the right corrosion-resistant short pipe and the conveying steel pipe are used in a matching mode, so that the aims of eliminating rust removal and lacquering at a welding port of the conveying steel pipe are fulfilled. The composite pipe has the characteristics of corrosion resistance and difficulty in edge wrapping of an anti-corrosion coating layer on the edge of the inner wall of the conveying steel pipe, the production cost is reduced, and the working efficiency is improved.
Description
Technical field
The utility model relates to the steel pipe technical field, is that a kind of interface is exempted from the coating composite pipe.
Background technique
In welding process between conveying steel pipe, the temperatures involved of the corrosion-inhibiting coating in heat-affected zone, weld seam both sides owing to being subject to welding heat destroyed, thereby loses antiseptic property.Usually need butt welding mouth again eliminate rust and paint at conveying steel pipe weld (weld bond left and right Ge Yue 100mm wide scope in), so not only reduced work efficiency, also be difficult for guaranteeing the corrosion-inhibiting coating quality at weld bond place.Main cause be pipe welding port soldered after, the space of weld bond inwall is seriously limited.
The model utility content
The utility model provides a kind of interface to exempt from the coating composite pipe, has overcome the deficiency of above-mentioned prior art, and it can effectively solve the problem that needs butt welding mouth again to eliminate rust and paint after conveying steel pipe welding to cause the low and difficult assurance corrosion-inhibiting coating quality of efficient.
The technical solution of the utility model realizes by following measures: a kind of interface is exempted from the coating composite pipe, comprises conveying steel pipe; On the left end inwall of conveying steel pipe, left annular mounting groove is arranged, be installed with left corrosion-resistant short tube in left annular mounting groove, on the inwall of the middle part of the corrosion-resistant short tube in a left side, left annular groove is arranged; On the right-hand member inwall of conveying steel pipe, right annular mounting groove is arranged, be installed with right corrosion-resistant short tube in right annular mounting groove, on the inwall of the middle part of the corrosion-resistant short tube in the right side, right annular groove is arranged.
The below is the further optimization and/or improvements to above-mentioned model utility technological scheme:
Above-mentioned on the left part inwall of the corrosion-resistant short tube in a left side one be fixed with left corrosion-resistant annular boss; One is fixed with right corrosion-resistant annular boss on the right part inwall of the corrosion-resistant short tube in the right side.
Fixedly be coated with respectively mutually concordant corrosion-inhibiting coating on the inwall of above-mentioned left corrosion-resistant short tube, conveying steel pipe and right corrosion-resistant short tube in left annular groove, in right annular groove, between left annular groove and right annular groove.
The right-hand member of the corrosion-resistant short tube in an above-mentioned left side is the wide conical surface in the left narrow right side, and the right-hand member of left annular mounting groove is the conical surface that matches with the right-hand member of the corrosion-resistant short tube in a left side; The left end of right corrosion-resistant short tube is the narrow conical surface in the left wide right side, and the left end of right annular mounting groove is the conical surface that matches with the left end of the corrosion-resistant short tube in the right side.
The corrosion-resistant short tube in an above-mentioned left side is stainless steel short tube or nickel-base alloy short tube; Right corrosion-resistant short tube is stainless steel short tube or nickel-base alloy short tube.
The left end of the corrosion-resistant short tube in an above-mentioned left side is fixed by welding on conveying steel pipe; The right-hand member of right corrosion-resistant short tube is fixed by welding on conveying steel pipe.
The length of the corrosion-resistant short tube in an above-mentioned left side is 100 millimeters to 200 millimeters; The length of right corrosion-resistant short tube is 100 millimeters to 200 millimeters.
The utility model reasonable and compact in structure, easy to use, by being used in conjunction with of the corrosion-resistant short tube in a left side and right corrosion-resistant short tube and conveying steel pipe, realize the purpose of conveying steel pipe soldering opening place's release rust and japanning, have the advantages that corrosion protection and conveying steel pipe inner wall edge corrosion-inhibiting coating are difficult for alice, reduce cost of production, improved working efficiency.
Description of drawings
Accompanying drawing 1 is looked the sectional structure schematic diagram for master of the present utility model.
Coding in accompanying drawing is respectively: 1 is conveying steel pipe, and 2 is left corrosion-resistant short tube, and 3 is left annular groove, and 4 is right corrosion-resistant short tube, and 5 is right annular groove, and 6 is left corrosion-resistant annular boss, and 7 is right corrosion-resistant annular boss.
Embodiment
The utility model is not subjected to following embodiment's restriction, can determine concrete mode of execution according to the technical solution of the utility model and actual conditions.
In the utility model, for convenience of description, the description of the relative position relation of each parts is all that the Butut mode according to specification 1 is described, as: the position relationship of forward and backward, upper and lower, left and right etc. is to determine according to the Butut direction of Figure of description.
Below in conjunction with embodiment and accompanying drawing, the utility model is further described:
As shown in Figure 1, this interface is exempted from the coating composite pipe and is comprised conveying steel pipe 1; On the left end inwall of conveying steel pipe 1, left annular mounting groove is arranged, be installed with left corrosion-resistant short tube 2 in left annular mounting groove, left annular groove 3 is arranged on the middle part inwall of the corrosion-resistant short tube 2 in a left side; On the right-hand member inwall of conveying steel pipe 1, right annular mounting groove is arranged, be installed with right corrosion-resistant short tube 4 in right annular mounting groove, right annular groove 5 is arranged on the middle part inwall of the corrosion-resistant short tube 4 in the right side.Like this, only needing respectively two interfaces to be exempted from the left corrosion-resistant short tube 2 that conveying steel pipe 1 welds together, one of them interface is exempted from the coating composite pipe of coating composite pipe and right corrosion-resistant short tube 4 that another interface is exempted from the coating composite pipe during use is fixed and welded together, welding capacity has reduced to original 50%, saved cost, having reached does not need the purpose that again eliminates rust and paint after corrosion protection and welding yet.
Can according to actual needs, above-mentioned interface be exempted from the coating composite pipe make further optimization and/or improvements:
As shown in Figure 1, one is fixed with left corrosion-resistant annular boss 6 on the left part inwall of the corrosion-resistant short tube 2 in a left side; One is fixed with right corrosion-resistant annular boss 7 on the right part inwall of the corrosion-resistant short tube 4 in the right side.
As required, fixedly be coated with respectively mutually concordant corrosion-inhibiting coating on the inwall of left corrosion-resistant short tube 2, conveying steel pipe 1 and the right corrosion-resistant short tube 4 in left annular groove 3, in right annular groove 5, between left annular groove 3 and right annular groove 5.The internal diameter of left corrosion-resistant short tube 2 and the internal diameter of conveying steel pipe 1 equate; The internal diameter of right corrosion-resistant short tube 4 and the internal diameter of conveying steel pipe 1 equate.Like this, prevented that the corrosion-inhibiting coating edge is difficult for the alice phenomenon, thereby guaranteed the quality of corrosion-inhibiting coating, extended the working life of conveying steel pipe 1.
As shown in Figure 1, the right-hand member of left corrosion-resistant short tube 2 is the wide conical surface in the left narrow right side, and the right-hand member of left annular mounting groove is the conical surface that matches with the right-hand member of the corrosion-resistant short tube 2 in a left side; The left end of right corrosion-resistant short tube 4 is the narrow conical surface in the left wide right side, and the left end of right annular mounting groove is the conical surface that matches with the left end of the corrosion-resistant short tube 4 in the right side.
As required, left corrosion-resistant short tube 2 is stainless steel short tube or nickel-base alloy short tube; Right corrosion-resistant short tube 4 is stainless steel short tube or nickel-base alloy short tube.
As required, the left end of left corrosion-resistant short tube 2 is fixed by welding on conveying steel pipe 1; The right-hand member of right corrosion-resistant short tube 4 is fixed by welding on conveying steel pipe 1.
As required, the length of left corrosion-resistant short tube 2 is 100 millimeters to 200 millimeters; The length of right corrosion-resistant short tube 4 is 100 millimeters to 200 millimeters.
Above technical characteristics has consisted of most preferred embodiment of the present utility model, and it has stronger adaptability and best implementation result, can increase and decrease according to actual needs non-essential technical characteristics, satisfies the demand of different situations.
Claims (10)
1. an interface is exempted from the coating composite pipe, it is characterized in that comprising conveying steel pipe; On the left end inwall of conveying steel pipe, left annular mounting groove is arranged, be installed with left corrosion-resistant short tube in left annular mounting groove, on the inwall of the middle part of the corrosion-resistant short tube in a left side, left annular groove is arranged; On the right-hand member inwall of conveying steel pipe, right annular mounting groove is arranged, be installed with right corrosion-resistant short tube in right annular mounting groove, on the inwall of the middle part of the corrosion-resistant short tube in the right side, right annular groove is arranged.
2. interface according to claim 1 is exempted from the coating composite pipe, it is characterized in that on the left part inwall of left corrosion-resistant short tube, one is fixed with left corrosion-resistant annular boss; One is fixed with right corrosion-resistant annular boss on the right part inwall of the corrosion-resistant short tube in the right side.
3. interface according to claim 1 and 2 is exempted from the coating composite pipe, it is characterized in that in left annular groove, fixedly is coated with respectively mutually concordant corrosion-inhibiting coating on the inwall of left corrosion-resistant short tube, conveying steel pipe and right corrosion-resistant short tube in right annular groove, between left annular groove and right annular groove.
4. interface according to claim 1 and 2 is exempted from the coating composite pipe, it is characterized in that the right-hand member of left corrosion-resistant short tube is the wide conical surface in the left narrow right side, and the right-hand member of left annular mounting groove is the conical surface that matches with the right-hand member of the corrosion-resistant short tube in a left side; The left end of right corrosion-resistant short tube is the narrow conical surface in the left wide right side, and the left end of right annular mounting groove is the conical surface that matches with the left end of the corrosion-resistant short tube in the right side.
5. interface according to claim 3 is exempted from the coating composite pipe, it is characterized in that the right-hand member of left corrosion-resistant short tube is the wide conical surface in the left narrow right side, and the right-hand member of left annular mounting groove is the conical surface that matches with the right-hand member of the corrosion-resistant short tube in a left side; The left end of right corrosion-resistant short tube is the narrow conical surface in the left wide right side, and the left end of right annular mounting groove is the conical surface that matches with the left end of the corrosion-resistant short tube in the right side.
6. interface according to claim 1 and 2 is exempted from the coating composite pipe, it is characterized in that left corrosion-resistant short tube is stainless steel short tube or nickel-base alloy short tube; Right corrosion-resistant short tube is stainless steel short tube or nickel-base alloy short tube.
7. interface according to claim 5 is exempted from the coating composite pipe, it is characterized in that left corrosion-resistant short tube is stainless steel short tube or nickel-base alloy short tube; Right corrosion-resistant short tube is stainless steel short tube or nickel-base alloy short tube.
8. interface according to claim 1 and 2 is exempted from the coating composite pipe, it is characterized in that the left end of left corrosion-resistant short tube is fixed by welding on conveying steel pipe; The right-hand member of right corrosion-resistant short tube is fixed by welding on conveying steel pipe.
9. interface according to claim 7 is exempted from the coating composite pipe, it is characterized in that the left end of left corrosion-resistant short tube is fixed by welding on conveying steel pipe; The right-hand member of right corrosion-resistant short tube is fixed by welding on conveying steel pipe.
10. interface according to claim 9 is exempted from the coating composite pipe, and the length that it is characterized in that left corrosion-resistant short tube is 100 millimeters to 200 millimeters; The length of right corrosion-resistant short tube is 100 millimeters to 200 millimeters.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320052143 CN203023674U (en) | 2013-01-30 | 2013-01-30 | Composite pipe without coating layer at joint |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320052143 CN203023674U (en) | 2013-01-30 | 2013-01-30 | Composite pipe without coating layer at joint |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203023674U true CN203023674U (en) | 2013-06-26 |
Family
ID=48647659
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320052143 Expired - Fee Related CN203023674U (en) | 2013-01-30 | 2013-01-30 | Composite pipe without coating layer at joint |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203023674U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104214439A (en) * | 2014-08-28 | 2014-12-17 | 中国海洋石油总公司 | Insulating device for dissimilar metal submarine pipelines |
-
2013
- 2013-01-30 CN CN 201320052143 patent/CN203023674U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104214439A (en) * | 2014-08-28 | 2014-12-17 | 中国海洋石油总公司 | Insulating device for dissimilar metal submarine pipelines |
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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 |
Granted publication date: 20130626 Termination date: 20220130 |
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| CF01 | Termination of patent right due to non-payment of annual fee |