CN2839783Y - Equal diameter double-metal welding joint with base pipe steel pipe - Google Patents
Equal diameter double-metal welding joint with base pipe steel pipe Download PDFInfo
- Publication number
- CN2839783Y CN2839783Y CN 200520079800 CN200520079800U CN2839783Y CN 2839783 Y CN2839783 Y CN 2839783Y CN 200520079800 CN200520079800 CN 200520079800 CN 200520079800 U CN200520079800 U CN 200520079800U CN 2839783 Y CN2839783 Y CN 2839783Y
- Authority
- CN
- China
- Prior art keywords
- steel pipe
- pipe
- joint
- resistant alloy
- alloy layer
- 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 - Lifetime
Links
- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 49
- 239000010959 steel Substances 0.000 title claims abstract description 49
- 238000004021 metal welding Methods 0.000 title description 2
- 230000007797 corrosion Effects 0.000 claims abstract description 19
- 238000005260 corrosion Methods 0.000 claims abstract description 19
- 238000003466 welding Methods 0.000 claims abstract description 18
- 229910045601 alloy Inorganic materials 0.000 claims abstract description 12
- 239000000956 alloy Substances 0.000 claims abstract description 12
- 238000007789 sealing Methods 0.000 claims abstract description 8
- 230000007704 transition Effects 0.000 claims abstract description 8
- 238000005476 soldering Methods 0.000 claims description 6
- 239000002131 composite material Substances 0.000 abstract description 11
- 238000006243 chemical reaction Methods 0.000 abstract description 3
- 238000009434 installation Methods 0.000 abstract description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- 239000001997 corrosion-resisting alloy Substances 0.000 description 5
- 239000010935 stainless steel Substances 0.000 description 4
- 229910001220 stainless steel Inorganic materials 0.000 description 4
- 239000011347 resin Substances 0.000 description 3
- 229920005989 resin Polymers 0.000 description 3
- 229920002430 Fibre-reinforced plastic Polymers 0.000 description 2
- 239000003365 glass fiber Substances 0.000 description 2
- 210000001503 joint Anatomy 0.000 description 2
- 239000011159 matrix material Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 229910000851 Alloy steel Inorganic materials 0.000 description 1
- 229910000975 Carbon steel Inorganic materials 0.000 description 1
- 241000755729 Clivia Species 0.000 description 1
- 208000037656 Respiratory Sounds Diseases 0.000 description 1
- 230000003260 anti-sepsis Effects 0.000 description 1
- 239000010962 carbon steel Substances 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 201000010099 disease Diseases 0.000 description 1
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
Images
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- Arc Welding In General (AREA)
Abstract
The utility model discloses a bimetal welding joint whose diameter is equal to that of a base pipe steel pipe. The utility model comprises a joint main body, wherein the joint main body is composed of a base pipe steel pipe and a corrosion resistant alloy layer on the inner wall of the base pipe steel pipe; a transition layer is arranged between the base pipe steel pipe and the corrosion resistant alloy layer. Sealing welding grooves at the transition layers of both ends of the base pipe steel pipe are provided with sealing welding layers which can be used for integrally sticking the corrosion resistant alloy layer and the base pipe steel pipe together. Both ends of the joint are provided with a finished edge for weld. The utility model realizes the conversion weld of a composite steel pipe, ensures the pipe integrity, and reduces the manufacturing cost and the installation cost of the composite steel pipe, so that the composite steel pipe is popularized and applied.
Description
Technical field
The utility model relates to a kind of composite steel tube crossover sub, particularly relate to a kind of conversion welding that is used for composite steel tube with the isometrical bimetal welded joint of parent tube steel pipe.
Background technique
The installation of conveying steel pipe generally adopts butt joint to be welded to connect.When the frp lining butt welding of steel tube connect, the matrix resin of high temperature meeting scaling loss glass fibre reinforced plastics made the resin charing, and the steel pipe under it comes out, and forms the big negative electrode of primary anode, accelerated corrosion.The corrosion resisting alloy liner or in cover steel pipe welding belong to dissimilar metal welding, the welding difficulty pierces through multiple layer easily when the multiple layer of corrosion resisting alloy wall thickness is thin, steel pipe is appeared, form the big negative electrode of primary anode, accelerated corrosion, and cause that easily near the multiple layer distortion the weld seam peel off.So, frp lining steel pipe, corrosion resisting alloy liner or in cover steel pipe welded joint be one and seem the simple problem of difficulty actually.
In order to solve this difficult problem, existing stainless steel inner lining steel pipe adopts the welding of stainless steel crossover sub.It is rare and cost an arm and a leg to make the Stainless Steel Tube source of this joint, and intergranular corrosion and stress corrosion easily take place welded joint, and fracture mode is complete fragility.Any other macroscopical disease do not occur in the slow stretching process of crackle, in case reach the fracture fast immediately of hit cross section, often cause catastrophic failure, it is very harmful.For the frp lining steel pipe, so far the conversion welded joint that does not also have to be suitable for occurs, a kind of joint that is Protected from Heat is arranged, the problem of existence, the one, welded and installed can't realize the structure that designs, the 2nd, composite steel tube is welding not, butt joint ring and spill seal ring can not seal, and fed sheet of a media can arrive the joint annular space that is Protected from Heat, and does not have antisepsis, the joint that is Protected from Heat becomes weak link in whole pipeline, broken the integrity of pipeline.
The model utility content
The purpose of this utility model is at above-mentioned the deficiencies in the prior art, provide a kind of cost low, prevent weld decay and stress corrosion and can guarantee pipeline integrity with the isometrical bimetal welded joint of parent tube steel pipe.
For achieving the above object, the technological scheme that the utility model adopted is: a kind of and isometrical bimetal welded joint of parent tube steel pipe, comprise adapter body 1, adapter body 1 by parent tube steel pipe 2 and liner the corrosion-resistant alloy layer 3 on parent tube steel pipe 2 inwalls form, be transition layer 4 between parent tube steel pipe 2 and the corrosion-resistant alloy layer 3, it is characterized in that: be provided with in the soldering and sealing groove at described parent tube steel pipe 2 two ends transition layers 4 places corrosion-resistant alloy layer 3 and parent tube steel pipe 2 are bonded as holistic soldering and sealing layer 5, the joint two ends are provided with the finished edge 6,8 that promising welding is reserved.
The utility model compared with prior art has the following advantages: the utility model cooperates with field welding technology, and the matrix resin of guaranteeing joint field welding heat affected zone glass fibre reinforced plastics in addition is not by scaling loss, and the corrosion resisting alloy layer is not pierced carbon steel is appeared; The structure of bimetal joint has prevented to take place the tendency of intergranular corrosion and stress corrosion, has guaranteed the integrity of pipeline; The liner of bimetal joint has solved the Stainless Steel Tube rare problem of originating, thereby has reduced the manufacture cost and the installation cost of composite steel tube, and applying of composite steel tube become a reality.
Description of drawings
Fig. 1 is a sectional drawing of the present utility model.
Embodiment
Below in conjunction with accompanying drawing the utility model is elaborated.
As shown in Figure 1, the utility model comprises adapter body 1, adapter body 1 by parent tube steel pipe 2 and liner the corrosion-resistant alloy layer 3 on parent tube steel pipe 2 inwalls form, be transition layer 4 between parent tube steel pipe 2 and the corrosion-resistant alloy layer 3, be provided with in the soldering and sealing groove at described parent tube steel pipe 2 two ends transition layers 4 places corrosion-resistant alloy layer 3 and parent tube steel pipe 2 are bonded as holistic soldering and sealing layer 5, the joint two ends are provided with the finished edge 6,8 that promising welding is reserved; Big groove 6 groove angles one end 7 is to be used for and the parent tube steel pipe welding of making composite steel tube, and clivia mouth 8 groove angles one end 9 gives at the scene and welds with the isometrical bimetal welded joint welding of composite steel tube or with the composite steel tube welding or with the steel pipe welding or with the corrosion resisting alloy steel pipe.
Claims (1)
1, the isometrical bimetal welded joint of a kind of and parent tube steel pipe, comprise adapter body (1), adapter body (1) by parent tube steel pipe (2) and liner the corrosion-resistant alloy layer (3) on parent tube steel pipe (2) inwall form, be transition layer (4) between parent tube steel pipe (2) and the corrosion-resistant alloy layer (3), it is characterized in that: be provided with in the soldering and sealing groove that described parent tube steel pipe (2) two ends transition layers (4) are located corrosion-resistant alloy layer (3) and parent tube steel pipe (2) are bonded as holistic soldering and sealing layer (5), the joint two ends are provided with the finished edge (6,8) that promising welding is reserved.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520079800 CN2839783Y (en) | 2005-12-01 | 2005-12-01 | Equal diameter double-metal welding joint with base pipe steel pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520079800 CN2839783Y (en) | 2005-12-01 | 2005-12-01 | Equal diameter double-metal welding joint with base pipe steel pipe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2839783Y true CN2839783Y (en) | 2006-11-22 |
Family
ID=37427765
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200520079800 Expired - Lifetime CN2839783Y (en) | 2005-12-01 | 2005-12-01 | Equal diameter double-metal welding joint with base pipe steel pipe |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2839783Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102506246A (en) * | 2011-10-21 | 2012-06-20 | 中国石油天然气集团公司 | Compound pipeline joint with base pipe as long as a liner pipe and manufacturing method thereof |
| CN105983755A (en) * | 2015-01-28 | 2016-10-05 | 胜利油田金岛工程安装有限责任公司 | Surfacing welding method for enclosed connection of long-distance pipeline without mending |
-
2005
- 2005-12-01 CN CN 200520079800 patent/CN2839783Y/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102506246A (en) * | 2011-10-21 | 2012-06-20 | 中国石油天然气集团公司 | Compound pipeline joint with base pipe as long as a liner pipe and manufacturing method thereof |
| CN105983755A (en) * | 2015-01-28 | 2016-10-05 | 胜利油田金岛工程安装有限责任公司 | Surfacing welding method for enclosed connection of long-distance pipeline without mending |
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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: SHANGHAI HILONG ANTI-CORROSION TECHNOLOGY ENGINEER Free format text: FORMER OWNER: GUO HENGGANG Effective date: 20130523 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: 710065 XI AN, SHAANXI PROVINCE TO: 201900 BAOSHAN, SHANGHAI |
|
| TR01 | Transfer of patent right |
Effective date of registration: 20130523 Address after: 201900 No. 1825 East Luo Road, Baoshan Industrial Park, Shanghai Patentee after: Shanghai Hilong Anti-Corrosion Technology Engineering Co., Ltd. Address before: 710065, No. two, No. 32, Xi'an, Shaanxi Patentee before: Guo Henggang |
|
| CX01 | Expiry of patent term |
Granted publication date: 20061122 |
|
| EXPY | Termination of patent right or utility model |