CN111299767A - Internal filling type argon filling welding device and welding method for butt welding of pipelines - Google Patents
Internal filling type argon filling welding device and welding method for butt welding of pipelines Download PDFInfo
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- CN111299767A CN111299767A CN202010187157.5A CN202010187157A CN111299767A CN 111299767 A CN111299767 A CN 111299767A CN 202010187157 A CN202010187157 A CN 202010187157A CN 111299767 A CN111299767 A CN 111299767A
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- 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
- B23K9/00—Arc welding or cutting
- B23K9/16—Arc welding or cutting making use of shielding gas
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- 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
- B23K9/00—Arc welding or cutting
- B23K9/32—Accessories
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- Plasma & Fusion (AREA)
- Mechanical Engineering (AREA)
- Arc Welding In General (AREA)
- Butt Welding And Welding Of Specific Article (AREA)
Abstract
The invention discloses an internal filling type argon filling welding device and a welding method for butt welding of pipelines, and belongs to the technical field of pipeline welding. This internal filling formula argon filling welding set is including two pipelines of butt joint, the butt joint of the end of treating of two pipelines and formation welding seam, and the end that every pipeline is close to the welding seam sets up the argon filling and separates the fender structure, and the argon filling of two pipelines separates and forms the argon gas filling chamber that carries out argon gas protection to the welding seam between the fender structure, and every argon filling separates the fender structure including setting up at the inside fender piece that separates of pipeline, separates the periphery that keeps off the piece and is equipped with the inflation formula gasbag that can contact with pipeline inner wall pressure when aerifing, it is equipped with the inlet channel and the outlet channel of switch-on inflation formula gasbag to separate the piece, it is equipped with the air inlet that fills inlet channel with argon gas to separate the piece, it still is equipped with the gas outlet that. The invention has the advantages of providing the sealing baffle which can be adapted to pipelines with different sizes, simple structure, convenient operation and long service life.
Description
Technical Field
The invention relates to the technical field of pipeline welding, in particular to an internal filling type argon filling welding device and method for butt welding of pipelines.
Background
In the welding process, argon gas with the filling flow rate of 10-15L/MIN in the stainless steel pipe is 10-15L/MIN to protect a molten pool, so that the joint of a welding seam and air is avoided, the high-temperature molten pool is prevented from being oxidized, and the phenomenon that the welding seam is blackened and blued is avoided.
The conventional welding method is: after the two stainless steel pipes to be butted are assembled, one end of each pipe is plugged, and the other end of each pipe is connected with an argon pipe; and (3) filling 15-30 minutes of argon (removing air in the pipe), then starting argon arc welding, and after the welding is finished, maintaining the flow velocity of the argon for 15-30 minutes until the welding seam is cooled. The longer the tubes at the two ends of the joint in the process, the longer the time for air exhaust and cooling, the greater the argon consumption, and the longer the time for workers to wait.
Therefore, the prior art discloses an inflation tool for welding a pipeline by argon gas welding and a welding method for welding the pipeline by argon gas welding, which are published under the application numbers CN109500475A and 20190322, and although the prior art solves the defects of the conventional welding method, the following problems still exist:
1. the tool is only suitable for butt welding of pipelines with single size, when the size of the pipeline changes greatly, the sealing material of the tool is not matched with the pipeline, the isolation effect cannot be achieved, the argon consumption is high, and the waiting time of workers is long;
2. the operation is troublesome, firstly, the pipeline needs to be pulled in through a chain, then the sealing material is clamped by adjusting the nut, after the pipeline is subjected to butt welding, the pipeline is pulled out through the chain, and the steps are complicated;
3. in the process of pulling the sealing material, the sealing material has large clamping force and large friction force between the sealing material and the pipeline, is easy to wear after long-term use and needs to be replaced regularly.
Disclosure of Invention
The invention aims to provide an internal filling type argon filling welding device and a welding method which can adapt to butt welding of pipelines with different sizes, and the internal filling type argon filling welding device and the welding method have the advantages of simple structure, convenience in operation and long service life.
In order to achieve the purpose, the internal filling type argon filling welding device and the welding method for the butt welding of the pipelines adopt the following technical scheme:
the utility model provides a pipeline butt welding's internal filling formula argon filling welding set, includes two pipelines that dock mutually, the butt joint of the end of waiting to weld of two pipelines and form the welding seam, the end that every pipeline is close to the welding seam sets up the argon and separates and keep off the structure, the argon that fills of two pipelines separates and to form between the fender structure and carry out argon protection to the welding seam argon gas filling chamber, every argon fills and keeps off the structure including setting up at the inside fender piece that separates of pipeline, the periphery that separates the piece is equipped with the inflation formula gasbag that can contact with pipeline inner wall pressure when aerifing, it is equipped with the inlet channel and the outlet channel of switch-on inflation formula gasbag to separate the piece, it is equipped with the air inlet that fills inlet channel with argon gas to separate the piece, it still is equipped with the gas.
Preferably, the two blocking pieces are communicated with each other through a communicating pipe, an argon pipe communicated with the air inlet channel is arranged at the position of an air inlet of one of the blocking pieces, the argon pipe is communicated with the argon bottle, a communicating port communicated with the air inlet channel is further arranged on the blocking piece, a first communicating joint is arranged at the position of the communicating port, a second communicating joint is arranged at the position of an air inlet of the other blocking piece, and the first communicating joint and the second communicating joint are arranged oppositely and communicated through the communicating pipe. Two argon filling blocking structures are communicated through a communicating pipe, so that the two argon filling blocking structures are inflated while the argon pipe is inflated, and finally, the argon filling cavity is filled from the air outlet of the air outlet channel, and the argon filling structure is ingenious in structural design and simple in operation.
Preferably, the inflatable balloon leaves a gap with the inner wall of the conduit when not inflated. When not aerifing after the welding is accomplished, the inflation formula gasbag can contract automatically, and sealed inefficacy forms the clearance between inflation formula gasbag and the pipeline inner wall, at this moment, conveniently emptys and takes out the argon filling and separate the fender structure, has avoided dragging among the prior art in-process and has caused the problem of wearing and tearing because of great frictional force to increase of service life.
A welding method for butt welding of pipelines comprises two pipelines which are butted, and further comprises an internal filling type argon filling welding device for butt welding of the pipelines, wherein the welding method for butt welding of the pipelines comprises the following steps:
(1) placing the internal filling type argon filling welding device in two pipelines, wherein the ends to be welded of the two pipelines are butted to form a welding line, and each argon filling baffle structure is placed close to the welding line;
(2) inflating an argon pipe through an argon bottle, and flushing argon into the inflatable air bag to enable the inflatable air bag to be inflated and to be pressed against the inner wall of the pipeline;
(3) argon gas discharged by the expansion type air bag is filled into the argon gas filling cavity, and argon arc welding is started;
(4) and after welding is finished, stopping filling argon until a welding seam is cooled, inclining the welded pipeline after the expansion type air bag contracts, and sliding the filled type argon filling welding device out of the pipeline.
Preferably, the distance between the argon-filled barrier structure and the weld is 200 mm.
Compared with the prior art, the invention has the beneficial effects that:
1. the expansion type air bag is arranged to compress the inner wall of the pipeline to separate the pipeline from the pipeline, the expansion type air bag is inflated to realize expansion, the expansion size of the expansion type air bag is realized according to the inner diameter of the pipeline within a certain range, and the change range is large, so that the expansion type air bag is suitable for the grids of the pipelines with different specifications, has a wide application range and improves the practicability;
2. according to the invention, the expansion type air bag is inflated while the argon filling cavity is inflated, the argon is inflated into the expansion type air bag and then expanded, and then enters the argon filling cavity formed by the expansion type air bag sealing barrier, so that the weld joint is protected, the sealing is convenient, the integral structure design is ingenious, and the operation steps are simplified; meanwhile, after welding is finished, argon gas filling is stopped, at the moment, the expansion type air bag can automatically contract, sealing fails, the expansion type air bag only needs to be directly poured out and taken out, and the operation is simple;
3. according to the invention, the expansion type air bag is arranged, when the welding is carried out by inflating, the expansion type air bag is inflated and expanded, the inner wall of the pipeline is sealed and compressed, the blocking effect is realized, when the welding is finished and the pipeline is not inflated, the expansion type air bag can automatically contract, the sealing is realized at the moment, a gap is formed between the expansion type air bag and the inner wall of the pipeline, at the moment, the argon filling blocking structure is conveniently poured and taken out, the problem of abrasion caused by large friction force in the pulling process in the prior art is avoided, and the service life is prolonged.
Drawings
FIG. 1 is a schematic structural diagram of the present invention.
The device comprises an argon gas pipe 1, a pipeline 2, a gas inlet 3, a gas inlet channel 4, a blocking part 5, an expansion type air bag 6, a gas outlet channel 7, a gas outlet 8, an argon gas filling cavity 9, a welding seam 10, a second communicating joint 11, a communicating pipe 12, a first communicating joint 13 and a communicating port 14.
Detailed Description
The present invention is further illustrated by the following detailed description, which is to be construed as merely illustrative and not limitative of the remainder of the disclosure, and modifications and variations such as those ordinarily skilled in the art are intended to be included within the scope of the present invention as defined in the appended claims.
As shown in fig. 1, an internal filling type argon filling welding device for pipe butt welding comprises two pipes 2 which are butted, wherein ends to be welded of the two pipes 2 are butted to form a welding seam 10, an argon filling blocking structure is arranged at the end part, close to the welding seam 10, of each pipe 2, an argon filling cavity 9 for argon protection of the welding seam 10 is formed between the argon filling blocking structures of the two pipes 2, each argon filling blocking structure comprises a blocking piece 5 arranged inside the pipe 2, an expansion type air bag 6 capable of being in pressure contact with the inner wall of the pipe 2 when being inflated is arranged on the periphery of the blocking piece 5, a gap is reserved between the expansion type air bag 6 and the inner wall of the pipe 2 when not being inflated, the blocking piece 5 is provided with an air inlet channel 4 and an air outlet channel 7 which are communicated with the expansion type air bag 6, the blocking piece 5 is provided with an air inlet 3 for filling argon into the air inlet channel 4, and the blocking piece 5 is further provided with an; the two blocking pieces 5 are communicated through a communicating pipe 12, an argon pipe 1 communicated with the air inlet channel 4 is arranged at the position of an air inlet 3 of one of the blocking pieces 5, the argon pipe 1 is communicated with the argon bottle, the blocking piece 5 is also provided with a communicating port 14 communicated with the air inlet channel 4, a first communicating joint 13 is arranged at the position of the communicating port 14, a second communicating joint 11 is arranged at the position of the air inlet 3 of the other blocking piece 5, and the first communicating joint 13 is opposite to the second communicating joint 11 and is communicated through the communicating pipe 12.
The welding method for the butt welding of the pipelines comprises two pipelines 2 which are butted, and also comprises an internal filling type argon filling welding device for the butt welding of the pipelines, and comprises the following steps:
(1) placing the internal filling type argon filling welding device in the two pipelines 2, butting the ends to be welded of the two pipelines 2 to form a welding seam 10, placing each argon filling blocking structure close to the welding seam 10, and enabling the distance between each argon filling blocking structure and the welding seam 10 to be 200 mm;
(2) the argon gas tube 1 is inflated through an argon gas bottle, and argon gas rushes into the inflatable air bag 6 to be inflated and is pressed against the inner wall of the pipeline 2;
(3) argon gas discharged by the expansion type air bag 6 is filled into the argon gas filling cavity 9, and argon arc welding is started;
(4) and after welding, stopping filling argon until the welding seam 10 is cooled, inclining the welded pipeline 2 after the expansion type air bag 6 contracts, and sliding the filled type argon filling welding device out of the pipeline 2.
The specific working process and principle of the invention are as follows: before the two pipelines 2 are assembled, the argon pipe 1 is connected with the argon filling blocking structure; after connection, the argon filling blocking structure is placed at a position 200mm away from a welding line, then the two pipelines 2 are assembled, the two pipelines 2 are in butt joint, argon gas is filled, the expansion type air bag is filled with the argon gas to be expanded, then the argon gas enters an argon gas filling cavity formed by the expansion type air bag sealing blocking, argon arc welding is started when the argon gas reaches a preset concentration, and after welding is completed, the inclined pipeline 2 is toppled and taken out to form the argon filling blocking structure.
According to the invention, by using the argon filling barrier structure, the expansion type air bag 6 is attached to the inner wall of the pipeline 2, oxygen is continuously discharged by argon flow, an oxygen-free space required by welding the pipeline 2 is formed, the argon only fills the volume between the two barriers, and the whole butt joint pipeline is prevented from being filled with argon, so that the evacuation time is shortened, the use amount of the argon is reduced, and finally the cost reduction and the efficiency improvement are realized.
In the description of the present invention, it is to be understood that the terms "coaxial", "bottom", "one end", "top", "middle", "other end", "upper", "one side", "top", "inner", "front", "center", "both ends", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention.
In the present invention, unless otherwise expressly specified or limited, the terms "mounted," "disposed," "connected," "secured," "screwed" and the like are to be construed broadly, e.g., as meaning fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; the terms may be directly connected or indirectly connected through an intermediate, and may be communication between two elements or interaction relationship between two elements, unless otherwise specifically limited, and the specific meaning of the terms in the present invention will be understood by those skilled in the art according to specific situations.
While the foregoing description shows and describes the preferred embodiments of the present invention, it is to be understood that the invention is not limited to the forms disclosed herein, but is not to be construed as excluding other embodiments and is capable of use in various other combinations, modifications, and environments and is capable of changes within the scope of the inventive concept as described herein, commensurate with the above teachings, or the skill or knowledge of the relevant art. And that modifications and variations may be effected by those skilled in the art without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (5)
1. The utility model provides a pipeline butt welding's interior filled type argon filling welding set, includes two pipelines of butt joint, the butt joint of the end of waiting to weld of two pipelines and form the welding seam, and the tip that every pipeline is close to the welding seam sets up the argon filling and separates the fender structure, and the argon filling of two pipelines separates and forms the argon gas filling chamber that carries out argon protection to the welding seam between the fender structure, its characterized in that: each argon filling blocking structure comprises a blocking piece arranged in the pipeline, an expansion type air bag capable of being in pressure contact with the inner wall of the pipeline when the blocking piece is inflated is arranged on the periphery of the blocking piece, the blocking piece is provided with an air inlet channel and an air outlet channel communicated with the expansion type air bag, the blocking piece is provided with an air inlet for filling argon into the air inlet channel, and the blocking piece is further provided with an air outlet for communicating the air outlet channel with the argon filling cavity.
2. The filled argon-filled welding device for butt welding of pipes according to claim 1, characterized in that: the two blocking pieces are communicated through a communicating pipe, an argon pipe communicated with the air inlet channel is arranged at the air inlet position of one of the blocking pieces, the argon pipe is communicated with the argon bottle, a communicating port communicated with the air inlet channel is further arranged on the blocking piece, a first communicating joint is arranged at the communicating port, a second communicating joint is arranged at the air inlet position of the other blocking piece, and the first communicating joint and the second communicating joint are arranged oppositely and communicated through the communicating pipe.
3. The filled argon-filled welding device for butt welding of pipes according to claim 1, characterized in that: and a gap is reserved between the inflatable air bag and the inner wall of the pipeline when the inflatable air bag is not inflated.
4. A welding method for butt welding of pipes, comprising two pipes to be butt welded, and further comprising an inner filling type argon filling welding device for butt welding of pipes according to any one of claims 1 to 3, wherein the welding method for butt welding of pipes comprises the following steps:
(1) placing the internal filling type argon filling welding device in two pipelines, wherein the ends to be welded of the two pipelines are butted to form a welding line, and each argon filling baffle structure is placed close to the welding line;
(2) inflating an argon pipe through an argon bottle, and flushing argon into the inflatable air bag to enable the inflatable air bag to be inflated and to be pressed against the inner wall of the pipeline;
(3) argon gas discharged by the expansion type air bag is filled into the argon gas filling cavity, and argon arc welding is started;
(4) and after welding is finished, stopping filling argon until a welding seam is cooled, inclining the welded pipeline after the expansion type air bag contracts, and sliding the filled type argon filling welding device out of the pipeline.
5. The welding method of pipe butt welding according to claim 4, characterized in that: the distance between the argon filling baffle structure and the welding line is 200 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010187157.5A CN111299767A (en) | 2020-03-17 | 2020-03-17 | Internal filling type argon filling welding device and welding method for butt welding of pipelines |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010187157.5A CN111299767A (en) | 2020-03-17 | 2020-03-17 | Internal filling type argon filling welding device and welding method for butt welding of pipelines |
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| CN111299767A true CN111299767A (en) | 2020-06-19 |
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| CN202010187157.5A Pending CN111299767A (en) | 2020-03-17 | 2020-03-17 | Internal filling type argon filling welding device and welding method for butt welding of pipelines |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112388115A (en) * | 2020-11-18 | 2021-02-23 | 武汉轻工大学 | Tail pipe welding protection system of hydrogen production reformer |
| CN113770496A (en) * | 2021-09-01 | 2021-12-10 | 沪东中华造船(集团)有限公司 | Ship fuel pipe welding inflation device and use method thereof |
| CN114131554A (en) * | 2021-12-01 | 2022-03-04 | 中船澄西扬州船舶有限公司 | Detachable mounting relay tool for stern shaft and using method |
| CN115095724A (en) * | 2022-06-01 | 2022-09-23 | 中建八局浙江建设有限公司 | Large-scale pipeline butt joint device and method |
| CN116275424A (en) * | 2023-05-06 | 2023-06-23 | 湖北迪峰换热器股份有限公司 | Welding device for ultrathin aluminum strip heat exchanger forming process |
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| CN116275424A (en) * | 2023-05-06 | 2023-06-23 | 湖北迪峰换热器股份有限公司 | Welding device for ultrathin aluminum strip heat exchanger forming process |
| CN116275424B (en) * | 2023-05-06 | 2023-10-03 | 湖北迪峰换热器股份有限公司 | Welding device for ultrathin aluminum strip heat exchanger forming process |
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Application publication date: 20200619 |