CN108080771B - Argon chamber establishment tool and method - Google Patents
Argon chamber establishment tool and method Download PDFInfo
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- CN108080771B CN108080771B CN201711415958.7A CN201711415958A CN108080771B CN 108080771 B CN108080771 B CN 108080771B CN 201711415958 A CN201711415958 A CN 201711415958A CN 108080771 B CN108080771 B CN 108080771B
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- argon
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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
- B23K9/0026—Arc welding or cutting specially adapted for particular articles or work
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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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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Plasma & Fusion (AREA)
- Mechanical Engineering (AREA)
- Arc Welding In General (AREA)
- Pipe Accessories (AREA)
Abstract
The invention belongs toThe technical field of maintenance of nuclear power plants, in particular to an electric argon chamber building tool and method. The device comprises a hand-held bidirectional electric rotating gun, a flexible chain, a rubber sleeve and a high-temperature-resistant flexible material; the high-temperature-resistant flexible material is used as a plugging material when the argon chamber is built; the flexible chain is connected with the handheld bidirectional electric rotating gun and the high-temperature-resistant flexible material; the handheld bidirectional electrokinetic transfer gun is used as driving equipment, and the high-temperature-resistant flexible material is driven by a flexible chain; the flexible chain is provided with a rubber sleeve outside, and the valve sealing surfaces for establishing the argon chamber are protected by friction reduction. The argon chamber establishing tool is suitable for welding pipelines with the diameter larger than 30mm or other small opening (the opening area is larger than 9 cm) 2 ) Nor is the degree of bending of the pipe limited by the equipment pipe welding. The method is basically suitable for establishing the argon chamber in the pipeline welding work under various working conditions.
Description
Technical Field
The invention belongs to the technical field of maintenance of nuclear power plants, and particularly relates to an argon chamber building tool and method.
Background
The overhaul work in the nuclear power field relates to a large number of welding works, and for welding materials such as stainless steel, high alloy steel and the like, particularly for welding important equipment structures and system pipeline welds, a full manual argon arc welding or argon-electric combined welding process is generally adopted. The welding mode relates to the back protection of the weld joint root, the problem of back oxidization is prevented, and the effective protection of the weld joint back is realized by establishing an argon chamber. The traditional argon chamber establishing method comprises a paper dissolving argon chamber argon filling method, a sponge rubber plate argon chamber argon filling method, a balloon argon chamber argon filling method, a towing cover argon filling method, a valve core pulling argon filling method and the like, and because the construction modes of shutdown maintenance and construction and installation stages are different, equipment and pipelines have no large openings, the pipelines are bent in a tortuous way, the pipelines cannot be disassembled for welding, and the argon chamber establishing method has an unsatisfactory effect in the welding work practice of the valves and the pipelines. How to effectively build an argon chamber becomes a technical difficulty for such welding work.
The argon gas chamber is established by using water-soluble paper, the pipeline is plugged by using the water-soluble paper, the pipeline is washed by water after welding, the water-soluble paper can be completely dissolved in the water, and the water-soluble paper is discharged out of the pipeline along with a medium. However, this method requires a certain distance between the water-soluble paper and the weld joint, and the nuclear power plant system requires extremely high medium cleanliness, which would bring about huge economic loss and unsafe factors if the water-soluble paper was carbonized and cleaned cleanly during the welding process. In the reconstruction work of the Fuqing nuclear power 101 overhaul valve, the furthest position where the water-soluble paper can reach in the pipeline is still too close to the welding line due to the influence of factors such as pipeline bending, and the water-soluble paper is carbonized and deteriorated due to high temperature generated in the welding implementation process and cannot be dissolved in water, so that foreign matters are caused, the overhaul period is influenced, and huge economic loss is caused. How to build an argon chamber in the reconstruction work of the 201 overhaul valve becomes a technical problem.
Disclosure of Invention
The invention aims to provide an argon chamber establishment tool and an argon chamber establishment method.
In order to achieve the purpose, the invention adopts the following technical scheme:
an argon chamber establishing tool comprises a handheld bidirectional electric rotating gun, a flexible chain, a rubber sleeve and a high-temperature-resistant flexible material;
the high-temperature-resistant flexible material is used as a plugging material when the argon chamber is built;
the flexible chain is connected with the handheld bidirectional electric rotating gun and the high-temperature-resistant flexible material;
the handheld bidirectional electrokinetic transfer gun is used as driving equipment, and the high-temperature-resistant flexible material is driven by a flexible chain;
the flexible chain is provided with a rubber sleeve outside, and the valve sealing surfaces for establishing the argon chamber are protected by friction reduction.
Further, an argon chamber establishing tool as described above, the high temperature resistant flexible material is a folded structure.
Further, an argon chamber building tool as described above, the high temperature resistant flexible material is a folded fire-resistant white cloth.
An argon chamber establishing method, comprising the steps of:
(1) Preparing argon chamber establishing tool
The argon gas chamber building tool comprises a 1 hand-held bidirectional electrokinetic transfer gun, a 2 flexible chain, a 3 rubber sleeve and a 4 high-temperature-resistant flexible material;
the high-temperature-resistant flexible material is used as a plugging material when the argon chamber is built;
the flexible chain is connected with the handheld bidirectional electric rotating gun and the high-temperature-resistant flexible material;
the handheld bidirectional electric rotating gun is used as driving equipment, and the high-temperature-resistant flexible material is driven by a flexible chain
The rubber sleeve is arranged outside the flexible chain, so that the protection effect of reducing friction is achieved on each sealing surface of the valve for establishing the argon chamber;
(2) Assembling the valve welding point and the pipeline;
(3) After the assembly, a pair of valve seats are plugged by a special plugging plate matched with the specification of the pipeline;
(4) Conveying the high-temperature-resistant flexible material into a pipeline by utilizing a handheld bidirectional electric rotating gun;
(5) Reversely rotating the handheld bidirectional electric rotating gun to draw out the high-temperature-resistant flexible material towards the welding line direction, so that the flexible material is completely unfolded and attached to the inner wall of the pipeline, and the tightness of the argon gas chamber is ensured;
(6) The valve body is blocked by a special blocking plate II, so that the argon chamber is built;
(8) Argon is filled into the argon chamber from the argon filling pipe, and welding is carried out;
(9) After the welding is finished, the welding mouth is cooled to normal temperature, the hand-held bidirectional electric rotating gun is reversely rotated, and the high-temperature-resistant flexible material is extracted towards the welding seam.
Further, according to the argon chamber establishing method, in the step (4), the high-temperature-resistant flexible material is conveyed to a position, which is more than 350mm away from the welding line position, in the pipeline by using the handheld bidirectional electrokinetic transfer gun.
Further, according to the argon chamber establishing method, in the step (5), the handheld bidirectional electrokinetic transfer gun is reversely rotated, and the high-temperature-resistant flexible material is pulled out 30-50mm towards the welding line direction, so that the flexible material is completely unfolded.
The technical scheme of the invention has the beneficial effects that:
the tool has the advantages of simple operation, good sealing effect, short argon chamber establishment time, easy removal of the plugging material, wide application range and the like;
the tool avoids the defects that the traditional argon chamber establishment mode can cause foreign matters, the argon purity is low, the weld quality cannot be ensured and the like;
the high-temperature-resistant flexible material is used as a flexible plugging material, is not limited by the internal shapes of the pipeline and the equipment, is suitable for internal structures with various shapes, and has good sealing property;
the flexible chain can be bent at any angle, and chains with different lengths and specifications and rubber sleeves can be used according to the field conditions, so that the flexible chain is basically not limited by the bending degree of a pipeline;
the rubber sleeve on the surface of the flexible chain is beneficial to protecting the internal structures of equipment and pipelines, and cannot cause any damage; the flexible blocking material has high bonding strength with the chain, and is safe and reliable without falling off in the extraction process;
the tool is simple in composition, low in cost, not easy to damage, shortens the argon chamber building time, and greatly reduces the maintenance cost.
Drawings
FIG. 1 is a schematic view of an argon chamber establishing tool according to the present invention;
FIG. 2 is a schematic view showing the operation effect of an argon chamber setting tool according to the present invention.
In the figure: 1 hand-held bidirectional electric rotating gun, 2 flexible chain, 3 rubber sleeve, 4 high temperature resistant flexible material, 5 argon chamber establishing tool, 6 welded junction position, 7 system pipeline, 8 special plugging plate I, 9 special plugging plate II, 10 argon gas filling pipe and 11 valve seat.
Detailed Description
The technical scheme of the invention is described in detail below with reference to the accompanying drawings and specific embodiments.
As shown in FIG. 1, the argon chamber establishing tool comprises a handheld bidirectional electrokinetic transfer gun, a flexible chain, a rubber sleeve and a high-temperature-resistant flexible material;
the high temperature resistant flexible material is used as a blocking material when the argon chamber is established, and in the embodiment, the high temperature resistant flexible material is folding fireproof white cloth.
The flexible chain is connected with the handheld bidirectional electric rotating gun and the high-temperature-resistant flexible material;
the handheld bidirectional electrokinetic transfer gun is used as driving equipment, and the high-temperature-resistant flexible material is driven by a flexible chain;
the flexible chain is provided with a rubber sleeve outside, and the valve sealing surfaces for establishing the argon chamber are protected by friction reduction.
As shown in fig. 2, an argon chamber establishing method includes the steps of:
(1) Preparing an argon chamber establishing tool as described above;
(2) Assembling the valve welding point and the pipeline;
(3) After the assembly, a pair of valve seats are plugged by a special plugging plate matched with the specification of the pipeline;
(4) Conveying the high-temperature-resistant flexible material to a position, which is more than 350mm away from the welding line position, in the pipeline by utilizing a handheld bidirectional electric rotating gun;
(5) Reversely rotating the handheld bidirectional electric rotating gun, extracting the high-temperature-resistant flexible material for 30-50mm towards the welding line direction, so that the flexible material is completely unfolded and attached to the inner wall of the pipeline, and the tightness of the argon gas chamber is ensured;
(6) The valve body is blocked by a special blocking plate II, so that the argon chamber is built;
(8) Argon is filled into the argon chamber from the argon filling pipe, and welding is carried out;
(9) After the welding is finished, the welding mouth is cooled to normal temperature, the hand-held bidirectional electric rotating gun is reversely rotated, and the high-temperature-resistant flexible material is extracted towards the welding seam.
The technical scheme is verified through workshop simulation part welding experiments, compared with the prior scheme, the novel argon chamber building tool not only greatly shortens the argon chamber building time and improves the efficiency, but also is wider in application range. Because the folding type high-temperature-resistant flexible plugging material is not limited by the internal shapes of the pipeline and the equipment, flexible materials with the specification and the size can be used according to the field condition, meanwhile, the flexible chain can be bent at any angle, and chains with different lengths and specifications can be used according to the field condition, the tool is basically not limited by the bending degree of the pipeline, is suitable for internal structures with various shapes, and has good sealing property. Therefore, the argon chamber establishing tool is suitable for welding pipelines with the diameter larger than 30mm or other small opening (the opening area is larger than 9 cm) 2 ) Nor is the degree of bending of the pipe limited by the equipment pipe welding. The method is basically suitable for establishing the argon chamber in the pipeline welding work under various working conditions. By combining the practical conditions of welding work implementation in China, the argon chamber establishing tool can break through some bottleneck which restricts the difficult establishment of the argon chamber in the welding industry and has poor effect.
The argon gas chamber establishing tool is used in the modification work of the Fuqing nuclear power 201 overhaul valve (the replacement of 28 system welding valves), and the scheme of establishing a compression chamber by using the original water-soluble paper is abandoned. Practical work verification shows that the argon chamber established by the tool has high purity, ensures the quality of welding seams, and saves the construction period of a main line by about 3 days (compared with the work of 101 major repair and the project). Therefore, the method has wide application prospect and application value, can be popularized and applied to various nuclear power plants at home and abroad and other industries related to welding work, has profound influence and help on the improvement of welding quality and efficiency, and solves the technical difficulty of difficult establishment of an argon gas chamber.
Claims (3)
1. An argon chamber establishing method, characterized by comprising the following steps:
(1) Preparing argon chamber establishing tool
The argon gas chamber building tool comprises a 1 hand-held bidirectional electrokinetic transfer gun, a 2 flexible chain, a 3 rubber sleeve and a 4 high-temperature-resistant flexible material;
the high-temperature-resistant flexible material is used as a plugging material when the argon chamber is built;
the flexible chain is connected with the handheld bidirectional electric rotating gun and the high-temperature-resistant flexible material;
the handheld bidirectional electrokinetic transfer gun is used as driving equipment, and the high-temperature-resistant flexible material is driven by a flexible chain;
the rubber sleeve is arranged outside the flexible chain, so that the protection effect of reducing friction is achieved on each sealing surface of the valve for establishing the argon chamber;
(2) Assembling the valve welding point and the pipeline;
(3) After the assembly, a pair of valve seats are plugged by a special plugging plate matched with the specification of the pipeline;
(4) Conveying the high-temperature-resistant flexible material into a pipeline by utilizing a handheld bidirectional electric rotating gun;
(5) Reversely rotating the handheld bidirectional electric rotating gun to draw out the high-temperature-resistant flexible material towards the welding line direction, so that the flexible material is completely unfolded and attached to the inner wall of the pipeline, and the tightness of the argon gas chamber is ensured;
(6) The valve body is blocked by a special blocking plate II, so that the argon chamber is built;
(8) Argon is filled into the argon chamber from the argon filling pipe, and welding is carried out;
(9) After the welding is finished, the welding mouth is cooled to normal temperature, the hand-held bidirectional electric rotating gun is reversely rotated, and the high-temperature-resistant flexible material is extracted towards the welding seam.
2. An argon gas chamber establishing method as defined in claim 1, wherein: in the step (4), the high-temperature-resistant flexible material is conveyed to a position, which is more than 350mm away from the welding line position, in the pipeline by utilizing the handheld bidirectional electrokinetic transfer gun.
3. An argon gas chamber establishing method as defined in claim 2, wherein: in the step (5), the hand-held bidirectional electrokinetic rotating gun is reversely rotated, and the high-temperature-resistant flexible material is pulled out for 30-50mm towards the welding line direction, so that the flexible material is completely unfolded.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711415958.7A CN108080771B (en) | 2017-12-25 | 2017-12-25 | Argon chamber establishment tool and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711415958.7A CN108080771B (en) | 2017-12-25 | 2017-12-25 | Argon chamber establishment tool and method |
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| Publication Number | Publication Date |
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| CN108080771A CN108080771A (en) | 2018-05-29 |
| CN108080771B true CN108080771B (en) | 2023-10-20 |
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| CN201711415958.7A Active CN108080771B (en) | 2017-12-25 | 2017-12-25 | Argon chamber establishment tool and method |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110355448A (en) * | 2019-07-09 | 2019-10-22 | 福建福清核电有限公司 | Stainless steel or dissimilar steel branch pipe welding back side argon-filled protection device |
Citations (5)
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|---|---|---|---|---|
| CN201728482U (en) * | 2010-04-15 | 2011-02-02 | 江苏伟业安装集团有限公司 | Local argon filled gas-filling and tracking protective box in large-size pipeline |
| CN203649620U (en) * | 2014-01-06 | 2014-06-18 | 中国化学工程第十三建设有限公司 | Argon arc welding connecting pipe |
| CN204366249U (en) * | 2014-12-09 | 2015-06-03 | 中国海洋石油总公司 | For the pipe plugging of argon protection welding |
| CN107414357A (en) * | 2017-08-25 | 2017-12-01 | 中国海洋石油总公司 | The argon filling closure air bag of stainless steel tube wire bonding weld bond under the conditions of restricted clearance |
| CN208099566U (en) * | 2017-12-25 | 2018-11-16 | 福建福清核电有限公司 | Tool is established in a kind of argon gas room |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2481065B (en) * | 2010-06-11 | 2012-09-05 | Subsea 7 Contracting Uk Ltd | Techniques for joining lined pipelines |
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- 2017-12-25 CN CN201711415958.7A patent/CN108080771B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201728482U (en) * | 2010-04-15 | 2011-02-02 | 江苏伟业安装集团有限公司 | Local argon filled gas-filling and tracking protective box in large-size pipeline |
| CN203649620U (en) * | 2014-01-06 | 2014-06-18 | 中国化学工程第十三建设有限公司 | Argon arc welding connecting pipe |
| CN204366249U (en) * | 2014-12-09 | 2015-06-03 | 中国海洋石油总公司 | For the pipe plugging of argon protection welding |
| CN107414357A (en) * | 2017-08-25 | 2017-12-01 | 中国海洋石油总公司 | The argon filling closure air bag of stainless steel tube wire bonding weld bond under the conditions of restricted clearance |
| CN208099566U (en) * | 2017-12-25 | 2018-11-16 | 福建福清核电有限公司 | Tool is established in a kind of argon gas room |
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| CN108080771A (en) | 2018-05-29 |
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