CN202561276U - Oil and gas conveying pipeline - Google Patents
Oil and gas conveying pipeline Download PDFInfo
- Publication number
- CN202561276U CN202561276U CN2012200538222U CN201220053822U CN202561276U CN 202561276 U CN202561276 U CN 202561276U CN 2012200538222 U CN2012200538222 U CN 2012200538222U CN 201220053822 U CN201220053822 U CN 201220053822U CN 202561276 U CN202561276 U CN 202561276U
- Authority
- CN
- China
- Prior art keywords
- resistant alloy
- welding
- oil
- corrosion resistant
- pipe body
- Prior art date
- 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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Abstract
The utility model discloses an oil and gas conveying pipeline, which comprises a pipe body, wherein inner holes of the two ends of the pipe body are provided with corrosion resistant alloy layers through a build up welding mode, and the lengths of the corrosion resistant alloy layers are from 130mm to 140mm. Because the inner walls of the two ends of the pipe body are provided with the corrosion resistant alloy layers through the build up welding mode in advance, pipes are arranged through a butt welding mode when mounting, and performance of organic coating is not affected by welding waste heat, thereby leading anticorrosive ability of welded regions not to be affected, guaranteeing normal conveying of medium after pipelines are mounted, and obviously reducing maintenance frequency of the pipelines.
Description
Technical field
The utility model relates to a kind of pipeline, particularly a kind of Oil and Natural Gas Transportation Pipeline.
Background technique
The existing pipeline that is used for the transfer oil natural gas comprises body, is coated with organic coating at the internal surface of body, forms the anticorrosive paint layer, is used for anticorrosion to body.Tube and tube butt welding during installation; In the welding region vicinity; Because receive the influence of welding thermal cycle, the anticorrosive paint layer of this place's internal surface suffers destruction to a certain degree, has reduced preset coating antiseptic performance; This zone is the corrosion-resistant weakness in the fed sheet of a media process, and about 80% body leaks and occurs in here.
Summary of the invention
The purpose of the utility model provides surface, a kind of pipe end endoporus place and does not receive tube and tube when butt joint welding heat affected, and good, the pipe joint of antiseptic property is difficult for taking place the oil natural gas conveyance conduit that leaks near the welding region, has solved the deficiency of existing technology.
The Oil and Natural Gas Transportation Pipeline of the utility model comprises body, and the built-up welding of endoporus place has corrosion-resistant alloy layer at the two ends of body, and the length of described corrosion-resistant alloy layer is 130 millimeters～140 millimeters.
The Oil and Natural Gas Transportation Pipeline of the utility model; Because inwall built-up welding corrosion-resistant alloy layer in advance at the body two ends; Pipe butt welding during installation, the welding waste heat does not influence the organic coating performance, makes the antiseptic power of welding region unaffected; Thereby guaranteed after the piping erection the normal conveying of medium has significantly been reduced the maintenance frequency of pipeline.
Description of drawings
Fig. 1 is the structural representation of the utility model embodiment.
Embodiment
As shown in Figure 1: 1 is the body of transfer oil natural gas, and the built-up welding of endoporus place has corrosion-resistant alloy layer 2 at the two ends of body 1, on the inwall of body 1, sprays organic coating, forms the anticorrosive paint layer, is used for anticorrosion to body 1.To the built-up welding length A, the waste heat that when pipe butt welding, produces does not exert an influence to the organic coating beyond the corrosion-resistant alloy layer 2 and is advisable the corrosion-resistant alloy layer 2 of pipe end inwall, can between 130 millimeters～140 millimeters, select along tubular axis.Said corrosion resistant alloy can be stainless steel or nickel-base alloy.Need do surface finish after the built-up welding handles.In order to keep the intact of anticorrosive paint layer, must weld and polishing treatment by advanced windrow, and then carry out spraying treatmen.
Before built-up welding, can process seam to body 1 two ends inner surface is the platform valency, with corrosion-resistant alloy layer 2 built-up welding at this stop portion.
Tube and tube butt joint during installation, welding waste heat do not influence that corrosion resistant alloy in it closes and the antiseptic property of neighbour's organic coating, thereby have guaranteed after the piping erection the normal conveying of medium is greatly reduced the maintenance frequency of pipeline.
Claims (1)
1. an Oil and Natural Gas Transportation Pipeline comprises body (1), it is characterized in that: in the endoporus place built-up welding of the two ends of body (1) corrosion-resistant alloy layer (2) is arranged, the length of described corrosion-resistant alloy layer (2) is 130 millimeters～140 millimeters.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200538222U CN202561276U (en) | 2012-02-20 | 2012-02-20 | Oil and gas conveying pipeline |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200538222U CN202561276U (en) | 2012-02-20 | 2012-02-20 | Oil and gas conveying pipeline |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202561276U true CN202561276U (en) | 2012-11-28 |
Family
ID=47210935
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012200538222U Expired - Fee Related CN202561276U (en) | 2012-02-20 | 2012-02-20 | Oil and gas conveying pipeline |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202561276U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106270949A (en) * | 2015-06-23 | 2017-01-04 | 胜利油田金岛工程安装有限责任公司 | A kind of submerged pipeline anticorrosion built-up welding internal joint patch method |
-
2012
- 2012-02-20 CN CN2012200538222U patent/CN202561276U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106270949A (en) * | 2015-06-23 | 2017-01-04 | 胜利油田金岛工程安装有限责任公司 | A kind of submerged pipeline anticorrosion built-up welding internal joint patch method |
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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: 20121128 Termination date: 20150220 |
|
| EXPY | Termination of patent right or utility model |