Tube plate welding protection device and tube plate welding method
A tube-sheet welding and protection device technology, which is applied in the direction of welding protection devices, devices for providing/removing protective gas, welding equipment, etc., can solve the problems of large environmental impact, and achieve the effects of avoiding oxidation reactions, improving quality, and ensuring quality
Active Publication Date: 2021-06-18
CHINA 19TH METALLURGICAL CORP
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Problems solved by technology
[0004]
The purpose of the present invention is to solve the problem that the traditional tube-sheet welding is greatly affected by the environment, and provide a tube-sheet welding protection device and a tube-sheet welding method to reduce the influence of the environment on the welding quality and improve the welding quality
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[0031] Below in conjunction with accompanying drawing and embodiment the present invention is described further as follows:
[0032] Tube sheet welding protection devices, such as figure 1 , figure 2 with image 3 As shown, it includes a back protective cover 2 for covering the back side of the tube sheet welding groove, a transparent front protective cover 1 for covering the front side of the tube sheet welding groove, and an air inlet pipeline 4 for transporting welding shielding gas;
[0033] The front protective cover 1 includes a cover body 1A through which two ends pass through and a movable cover plate 1B arranged on the outer end of the cover body 1A to close the opening of the outer end of the cover body 1A. 1A is movably connected; the movable cover plate 1B is provided with an accommodating hole 1B1 for the passage of the welded pipe 7, and a welding hole 1B2 is provided beside the accommodating hole 1B1;
[0034] The gas filling chamber 3 is formed by covering ...
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The invention discloses a tube plate welding protection device and a tube plate welding method, belongs to the field of tube plate welding, and aims to improve the welding quality. The tube plate welding protection device comprises a back protection cover, a transparent front protection cover and a gas inlet pipeline. The front protection cover comprises a cover body and a movable cover plate for sealing an opening in the outer end of the cover body, and the movable cover plate is movably connected with the cover body. An accommodating hole and a welding hole are formed in the movable cover plate. A gas filling cavity is defined by the back protection cover covering the back side of the tube plate welding groove and the front protection cover covering the front side of the tube plate welding groove, and the gas inlet pipeline communicates with the gas filling cavity. According to the tube plate welding protection device, the back of the welding seam is protected through the back protection cover, and the front of the welding seam is protected through the front protection cover, so that the front and back of the welding seam which is just welded are prevented from being in contact with air to generate oxidation reaction, and the quality of the welding seam is ensured. And a good protective gas environment is provided, the influence of ambient air flow on welding is eliminated, the continuous stability of an electric arc and a molten pool is guaranteed, and the device adapts to different welding environments.
Description
technical field [0001] The invention belongs to the technical field of tube-sheet welding, in particular to a tube-sheet welding protection device and a tube-sheet welding method. Background technique [0002] Welding is one of the important steps in the manufacture of pressure-bearing equipment. Welding quality has a direct impact on the quality of equipment, and poor welding quality of pressure-bearing equipment will threaten the life safety of equipment workers and cause serious safety accidents. Therefore, ensure that The welding quality of pressure-bearing equipment is the prerequisite for the safe use of pressure-bearing equipment. Especially the welding quality of the tube sheet in the pressure equipment plays a decisive role. [0003] In the tube-sheet welding of pressure-bearing equipment, the conventional welding method is to use traditional manual argon tungsten arc welding for welding. The inert gas flowing out of the welding torch head protects the welding arc ...
Claims
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IPC IPC(8): B23K9/02B23K9/16B23K9/32B23K101/04
CPCB23K9/02B23K9/16B23K9/321B23K9/325B23K2101/04
Inventor 陈晓川冯朝辉涂林立徐帮学曾祥勇
Owner CHINA 19TH METALLURGICAL CORP