CN114378467A - Welding scheme of two welding openings of branch pipe connecting branch pipe of branch pipe table - Google Patents
Welding scheme of two welding openings of branch pipe connecting branch pipe of branch pipe table Download PDFInfo
- Publication number
- CN114378467A CN114378467A CN202111522996.9A CN202111522996A CN114378467A CN 114378467 A CN114378467 A CN 114378467A CN 202111522996 A CN202111522996 A CN 202111522996A CN 114378467 A CN114378467 A CN 114378467A
- Authority
- CN
- China
- Prior art keywords
- branch pipe
- pipe
- welding
- branch
- platform
- 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.)
- Pending
Links
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K31/00—Processes relevant to this subclass, specially adapted for particular articles or purposes, but not covered by only one of the preceding main groups
- B23K31/02—Processes relevant to this subclass, specially adapted for particular articles or purposes, but not covered by only one of the preceding main groups relating to soldering or welding
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K37/00—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups
Abstract
The invention discloses a welding scheme of two welding openings of a branch pipe platform connecting branch pipe, which comprises the following steps: the welded junctions of the branch pipe table and the main pipe are prefabricated, the welded junctions of the branch pipe table and the branch pipe are welded on site, and the branch pipe and the main pipe are divided into two groups of single pipes for prefabrication; because the nozzle of branch pipe platform and person in charge is prefabricated mouthful, this way nozzle welding can develop the inspection of inside welding bead after finishing, and the inspection is qualified after, and this single tube can pass, no longer carries out the secondary group of subsequent bleeder to right: because the welded junction of the branch pipe platform and the branch pipe is an on-site opening, the pipeline and the pipe fitting behind the branch pipe platform are prefabricated as a single pipe, and the single pipe is transported and installed as an independent single pipe. The welding scheme of the two welding openings of the branch pipe platform connecting branch pipe can solve the problem of secondary assembly and the problem of deformation of the branch pipe, improves the working efficiency and reduces the cost.
Description
Technical Field
The invention relates to the technical field of offshore oil engineering, in particular to a welding scheme of two welded junctions of a branch pipe platform connecting branch pipe.
Background
In the fields of block construction at the upper part of an offshore oil platform, LNG modular factory construction and the like, in the process of pipeline prefabrication and installation, the size of a branch pipe is greatly different from that of a main pipe, a branch pipe table (pipe seat) is generally designed to replace a tee joint to lead out a branch pipe, for the branch pipe with small length, at present, welding openings at two sides of the branch pipe table are mostly prefabricated openings, the branch pipe and the main pipe are prefabricated together, and the branch pipe and the main pipe are prefabricated as a single pipe, so that two problems often occur, namely, the prefabricated branch pipe is often collided and deformed in the subsequent transportation and installation processes; and secondly, prefabricating the branch pipe and the main pipe together, prefabricating the branch pipe step by step, prefabricating a welding opening of the branch pipe table connected with the main pipe, then checking the internal welding quality of the welding opening, and welding the welding opening of the branch pipe table connected with the branch pipe after the welding opening is qualified to form secondary assembly work and cause discontinuity in work.
Disclosure of Invention
The invention aims to provide a welding scheme of two weld craters of a branch pipe connecting branch pipe of a branch pipe table aiming at the defects in the prior art so as to solve the problems in the background art.
In order to achieve the purpose, the invention provides the following technical scheme: the welding scheme is as follows:
the method comprises the following steps: the welded junctions of the branch pipe table and the main pipe are prefabricated, the welded junctions of the branch pipe table and the branch pipe are welded on site, and the branch pipe and the main pipe are divided into two groups of single pipes for prefabrication;
step two: because the welding openings of the branch pipe table and the main pipe are prefabricated openings, the inspection of an inner welding bead can be carried out after the welding of the welding opening is finished, and the single pipe can be released after the inspection is qualified, so that the subsequent secondary assembly of the branch pipe is not carried out;
step three: because the welded junction of the branch pipe platform and the branch pipe is an on-site opening, the pipeline and the pipe fitting behind the branch pipe platform are prefabricated as a single pipe, and the single pipe is transported and installed as an independent single pipe.
Furthermore, the branch pipe is connected with the main pipe, and subsequent secondary pairing of the branch pipe is not needed.
Furthermore, the branch pipe table and the branch pipes are welded on site, and the branch pipes are not influenced by the main pipe and cannot be collided and deformed due to the transportation of the main pipe.
According to the preferred technical scheme, the welding scheme comprises a branch pipe table, a main pipe is arranged on one side of the branch pipe table, a branch pipe is arranged on the other side of the branch pipe table, a pipeline is fixedly connected inside the main pipe, an elbow is fixedly connected to one side of the main pipe, flanges are connected to two ends of the main pipe, a prefabricated opening is formed in the joint of the main pipe and the branch pipe table, a site opening is formed in the joint of the branch pipe table and the branch pipe, an elbow is connected to one end of the branch pipe, and one end of the elbow is connected with the flanges.
As a preferable technical scheme of the invention, the main pipe, the branch pipes and the joints of the elbows and the flanges are all provided with prefabricated openings.
Compared with the prior art, the invention provides a welding scheme of two welding openings of a branch pipe connecting branch pipe of a branch pipe table, which has the following beneficial effects:
the welded junction of the branch pipe platform and the main pipe is a prefabricated opening, and the welded junction of the branch pipe platform and the branch pipe is a field opening; thus, a single pipe with branches is changed into two single pipes which are not affected mutually, and the inspection and the release can be reported after the prefabricated opening welded by the branch pipe table and the main pipe is welded; after the branch pipe is independently formed into a single pipe, the branch pipe is convenient to prefabricate and transport, and cannot be damaged by collision deformation due to connection with the main pipe. The scheme can solve the problem of secondary assembly and the problem of deformation of the branch pipes, improve the work efficiency and reduce the cost.
Drawings
FIG. 1 is a schematic view of the structural connection of the present invention; .
In the figure: 1. a pipe branch table; 2. a pipeline; 3. a flange; 4. bending the pipe; 5. prefabricating a port; 6. a field port; 7. a main pipe; 8. a branch pipe.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1, in the present embodiment: the welding scheme is as follows
The method comprises the following steps: the weld joints of the branch pipe table 1 and the main pipe 7 are prefabricated, the weld joints of the branch pipe table 1 and the branch pipe 8 are welded on site, and the branch pipe and the main pipe 7 are divided into two groups of single pipes for prefabrication;
step two: because the welding openings of the branch pipe table 1 and the main pipe 7 are the prefabricated openings 5, the inspection of an inner welding bead can be carried out after the welding of the welding openings is finished, and after the inspection is qualified, the single pipe can be released, and the subsequent secondary pairing of the branch pipes 8 is not carried out;
step three: because the welded junction of the branch pipe table 1 and the branch pipe 8 is the field opening 6, the pipeline 2 and the pipe fittings behind the branch pipe table 1 are prefabricated as a single pipe, and therefore the single pipe is taken as an independent single pipe for transportation and installation.
In conclusion, the branch pipes are connected with the main pipe 7, and subsequent secondary pairing of the branch pipes 8 is not needed, so that the work efficiency is improved, and the secondary pairing cost is reduced; the branch pipe platform 1 and the branch pipe 8 are welded on site, the branch pipe is not influenced by the main pipe 7, and the branch pipe cannot be collided and deformed due to the transportation of the main pipe 7, so that the correction cost is reduced.
Specifically, the welding scheme includes that the pipeline connection comprises a branch pipe table 1, a main pipe 7 is arranged on one side of the branch pipe table 1, a branch pipe 8 is arranged on the other side of the branch pipe table 1, a pipeline 2 is fixedly connected inside the main pipe 7, an elbow 4 is fixedly connected on one side of the main pipe 7, flanges 3 are connected to two ends of the main pipe 7, a prefabricated opening 5 is arranged at the connection position of the main pipe 7 and the branch pipe table 1, a site opening 6 is arranged at the connection position of the branch pipe table 1 and the branch pipe 8, one end of the branch pipe 8 is connected with the elbow 4, and one end of the elbow 4 is connected with the flange 3; the main pipe 7, the branch pipe 8 and the joint of the elbow 4 and the flange 3 are all provided with prefabricated openings 5.
The working principle and the using process of the invention are as follows: the method comprises the following steps that a worker prefabricates a main pipe 7 according to a drawing, a prefabricated opening 5 is arranged at the joint of a branch pipe table 1 and the main pipe 7, after prefabrication of the prefabricated opening 5 is finished, inspection of the inner side of the welded opening can be simultaneously carried out with inspection of other welded openings on the main pipe 7, and after the inspection is finished and all the welded openings are qualified, follow-up work can be carried out; and then prefabricating the branch pipe 8 according to a drawing, wherein a welding opening between the branch pipe 8 and the main pipe 7 is an on-site opening 6, the branch pipe 8 is prefabricated as an independent single pipe, the branch pipe 8 is not influenced by the main pipe 7, the deformation caused by the collision of the branch pipe 8 due to the placement or rolling of the main pipe 7 when the main pipe 7 is transported backwards is avoided, and the cost for deformation correction of the branch pipe 8 is saved.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that changes may be made in the embodiments and/or equivalents thereof without departing from the spirit and scope of the invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (5)
1. A welding scheme of two welding openings of a branch pipe connecting branch pipe of a branch pipe table comprises the following steps:
the method comprises the following steps: the welded junctions of the branch pipe table (1) and the main pipe (7) are prefabricated, the welded junctions of the branch pipe table (1) and the branch pipe (8) are welded on site, and the branch pipe and the main pipe (7) are divided into two groups of single pipes for prefabrication;
step two: because the welding openings of the branch pipe table (1) and the main pipe (7) are prefabricated openings, the inspection of an internal welding bead can be carried out after the welding of the welding opening is finished, and the single pipe can be released after the inspection is qualified, so that the subsequent secondary assembly of the branch pipe (8) is not carried out;
step three: as the welding opening for connecting the branch pipe platform (1) and the branch pipe (8) is an on-site opening, the pipeline (2) and the pipe fitting behind the branch pipe platform (1) are prefabricated as a single pipe, and the single pipe is transported and installed as an independent single pipe.
2. A welding scheme of two weld craters about a branch table connecting branch pipes according to the second step of claim 1, characterized in that: the branch pipe (8) is connected with the main pipe (7), and subsequent secondary pairing of the branch pipe (8) is not needed.
3. The welding scheme of the two-pass weld craters of the connecting branch pipe of the branch pipe table according to the step three of the claim 1, characterized in that: the branch pipe platform (1) and the branch pipe (8) are welded on site, the branch pipe is not influenced by the main pipe (7), and the branch pipe cannot be collided and deformed due to the transportation of the main pipe (7).
4. A welding solution for two-pass craters of a branch pipe connected to a branch pipe station according to claim 1, characterized in that: the welding scheme, its pipe connection include the branch pipe platform (1), branch pipe platform (1) one side is provided with and is responsible for (7), branch pipe platform (1) opposite side is equipped with bleeder (8), be responsible for (7) inside fixedly connected with pipeline (2), be responsible for (7) one side fixedly connected with elbow (4), be responsible for (7) both ends and all be connected with flange (3), be responsible for (7) and branch pipe platform (1) junction and be equipped with prefabricated mouth (5), branch pipe platform (1) is equipped with on-the-spot mouth (6) with bleeder (8) junction, bleeder (8) one end is connected with elbow (4), elbow (4) one end is connected with flange (3).
5. A two-weld joint scheme for connecting branch pipes of a branch pipe station according to claim 4, wherein: the main pipe (7), the branch pipe (8) and the joint of the elbow (4) and the flange (3) are all provided with prefabricated openings (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111522996.9A CN114378467A (en) | 2021-12-13 | 2021-12-13 | Welding scheme of two welding openings of branch pipe connecting branch pipe of branch pipe table |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111522996.9A CN114378467A (en) | 2021-12-13 | 2021-12-13 | Welding scheme of two welding openings of branch pipe connecting branch pipe of branch pipe table |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114378467A true CN114378467A (en) | 2022-04-22 |
Family
ID=81195743
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111522996.9A Pending CN114378467A (en) | 2021-12-13 | 2021-12-13 | Welding scheme of two welding openings of branch pipe connecting branch pipe of branch pipe table |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114378467A (en) |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2601344Y (en) * | 2003-02-27 | 2004-01-28 | 姚铭文 | Saddle |
| TWM271901U (en) * | 2005-01-13 | 2005-08-01 | He-Yuan Shie | End sealing apparatus for ventilating tube |
| CN101352747A (en) * | 2008-09-04 | 2009-01-28 | 天津市大港区顺力汽车零部件厂 | Technique for molding inclined connector saddle between main pipe and branch pipe as well as welding method |
| CN103084775A (en) * | 2013-01-15 | 2013-05-08 | 中国核工业二三建设有限公司 | Method of assembling main pipe and branch pipe of welded pipeline and tooling used for assembling and welding |
| CN207364665U (en) * | 2017-09-22 | 2018-05-15 | 海洋石油工程（青岛）有限公司 | The cleaning of pipeline and low pressure gas check |
| CN108105971A (en) * | 2017-12-19 | 2018-06-01 | 关新华 | The installation method of multi-gang air-conditioner coolant piping system |
| CN208507205U (en) * | 2018-06-22 | 2019-02-15 | 中核核电运行管理有限公司 | A kind of heavy water reactor main pipeline branch pipe connection connection structure for alleviating stress corrosion cracking |
| CN109909631A (en) * | 2019-03-20 | 2019-06-21 | 海洋石油工程（青岛）有限公司 | The building technology of super large wall thickness overlength multiple tube manifold |
| CN112348973A (en) * | 2020-11-06 | 2021-02-09 | 江南造船(集团)有限责任公司 | Ship pipe section assembly information calculation method, system, medium and device |
| CN214019018U (en) * | 2020-11-30 | 2021-08-24 | 速安云科技有限责任公司 | Fire-fighting pipeline installation system |
-
2021
- 2021-12-13 CN CN202111522996.9A patent/CN114378467A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2601344Y (en) * | 2003-02-27 | 2004-01-28 | 姚铭文 | Saddle |
| TWM271901U (en) * | 2005-01-13 | 2005-08-01 | He-Yuan Shie | End sealing apparatus for ventilating tube |
| CN101352747A (en) * | 2008-09-04 | 2009-01-28 | 天津市大港区顺力汽车零部件厂 | Technique for molding inclined connector saddle between main pipe and branch pipe as well as welding method |
| CN103084775A (en) * | 2013-01-15 | 2013-05-08 | 中国核工业二三建设有限公司 | Method of assembling main pipe and branch pipe of welded pipeline and tooling used for assembling and welding |
| CN207364665U (en) * | 2017-09-22 | 2018-05-15 | 海洋石油工程（青岛）有限公司 | The cleaning of pipeline and low pressure gas check |
| CN108105971A (en) * | 2017-12-19 | 2018-06-01 | 关新华 | The installation method of multi-gang air-conditioner coolant piping system |
| CN208507205U (en) * | 2018-06-22 | 2019-02-15 | 中核核电运行管理有限公司 | A kind of heavy water reactor main pipeline branch pipe connection connection structure for alleviating stress corrosion cracking |
| CN109909631A (en) * | 2019-03-20 | 2019-06-21 | 海洋石油工程（青岛）有限公司 | The building technology of super large wall thickness overlength multiple tube manifold |
| CN112348973A (en) * | 2020-11-06 | 2021-02-09 | 江南造船(集团)有限责任公司 | Ship pipe section assembly information calculation method, system, medium and device |
| CN214019018U (en) * | 2020-11-30 | 2021-08-24 | 速安云科技有限责任公司 | Fire-fighting pipeline installation system |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CZ215795A3 (en) | Set of unit-construction elements for composition of a connecting part of liquid line and connection method of lines | |
| CN110566720A (en) | construction method of arc corridor pipeline | |
| CN107503333A (en) | A kind of super large caliber penstock installation method | |
| CN113199201B (en) | Sleeve for repairing butt-joint girth weld defects of tee main pipe and machining and repairing method | |
| CN101392518B (en) | Diversion conduit rapid construction method of large hydraulic turbines | |
| CN114378467A (en) | Welding scheme of two welding openings of branch pipe connecting branch pipe of branch pipe table | |
| CN102493347B (en) | Method for machining and mounting flanges between sections of steel pipe arch | |
| CN109909631B (en) | Construction process of super-thick-wall super-long composite pipe manifold | |
| CN1316327A (en) | Method for in-situ repairing used pipeline by inserting high-density polyethylene pipe | |
| CN110814640A (en) | Stainless steel welding air pipe product production management system based on BIM | |
| CN211540102U (en) | Tool clamp for rapid steel pipe assembly | |
| CN113199202A (en) | Sleeve for repairing weld defects of connecting ring of three-way branch pipe and machining and repairing method | |
| CN112453744B (en) | Method for prefabricating and installing pipeline of converter oxygen lance valve station | |
| CN112780876B (en) | In-service repair sleeve and method for cracks of three-way pipe fitting and girth weld | |
| RU2086846C1 (en) | Insertion pipe and method of erection of pipe line | |
| CN218378105U (en) | Vacuum pipeline connecting piece of multi-split absorption heat pump | |
| CN111531363A (en) | Intelligent control 'welding-before-bending' process method for pipe | |
| CN216326459U (en) | Layout structure of prefabricated pipeline production line | |
| CN218914142U (en) | Electric welding joint for steel braided tube pipeline system | |
| CN218032005U (en) | Branching pipe | |
| CN217701744U (en) | Plate splicing and welding device of spiral welding machine for manufacturing PCCP steel cylinder | |
| CN117508504A (en) | Method for breaking mail wheel pipe system and construction method | |
| CN201661805U (en) | Plastic steel winding pipe three-way valve | |
| CN212977309U (en) | A prefabricated mould of pipe valve group for job site | |
| CN111891313A (en) | Pipe installation structure and method for preventing main pipe in ship from being bent due to pipe fouling |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |