Welding device for large weak-rigidity thin-wall component of nuclear reactor coolant pump

A coolant pump and thin-walled component technology, which is applied to the field of large-scale weak-stiffness thin-walled component welding devices for nuclear reactor coolant pumps, can solve problems such as aggravating the welding difficulties of thin-walled components, and achieves avoiding quality problems in assembly and welding. Guaranteed effect of manufacturing quality

Active Publication Date: 2021-08-06
HARBIN ELECTRIC POWER EQUIP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, the characteristics of long-dimension welds of large components further exacerbate the welding difficulties of thin-walled components

Method used

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  • Welding device for large weak-rigidity thin-wall component of nuclear reactor coolant pump
  • Welding device for large weak-rigidity thin-wall component of nuclear reactor coolant pump
  • Welding device for large weak-rigidity thin-wall component of nuclear reactor coolant pump

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Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0019] Such as figure 1 Shown is a schematic diagram of a laser welding device for a large weakly rigid thin-walled component of a nuclear reactor coolant pump. The upper part of the rigid bed 1 is the bed workbench 2. The beam 4 is fixed on the bed workbench through the column 3, and the rail is installed on the beam 4. 16. The track 16 is a rack structure, and the gear of the traveling trolley 5 meshes with the rack to realize walking on the beam 4 . The laser head 6 and the wire feeding assembly 7 are assembled on the traveling trolley 5 through bolts. The seam tracker 8 is assembled on the laser head 6 through the L-shaped bracket 17, and the seam tracker 8 is located on the front side of the laser head 6 in the welding direction, so as to realize the real-time positioning function during the welding process.

[0020] Such as image 3 As shown, the mobile trolley 10 is located below the mandrel 9, and the working surface of the mobile trolley 10 is in a semi-arc shape, a...

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Abstract

The invention relates to a welding device for a large weak-rigidity thin-wall component of a nuclear reactor coolant pump. A lathe bed workbench (2) is arranged at the upper part of a rigid lathe bed (1), a cross beam (4) is fixed on the lathe bed workbench through a stand column (3), a track (16) is arranged on the cross beam (4) and is of a rack structure, a gear of a walking trolley (5) is meshed with a rack, a laser head (6) and a wire feeding assembly (7) are assembled on the walking trolley (5) through bolts, a welding seam tracker (8) is assembled on the laser head (6) through an L-shaped support (17), a mandrel (9) is assembled on the rigid lathe bed (1) through bolts, and a movable trolley (10) is located below the mandrel (9). By means of the device provided by the invention, manpower input can be reduced, human errors are avoided, and the welding quality problem easily caused by manual operation is avoided; and at present, the device is put into the product manufacturing process, the use process is good, the income effect is remarkable, and the manufacturing quality of large weak-rigidity thin-wall components is effectively guaranteed while the operation difficulty is reduced.

Description

Technical field: [0001] The invention relates to a welding device for a large weak rigidity thin-walled member of a nuclear reactor coolant pump. Background technique: [0002] The nuclear reactor coolant pump is one of the key equipment of the nuclear island of the nuclear power plant. Its function is to transfer the heat generated in the reactor to the steam generator, thereby generating steam to drive the steam turbine to do work. The reactor coolant pump is the only rotating mechanical device in the reactor cooling system, so the reliability of the nuclear reactor coolant pump is the key to the safe and stable operation of the nuclear power plant. The nuclear reactor coolant pump involves welded parts of various thicknesses and structures. Among them, the welding of large weak-rigidity thin-walled components is the most difficult. In addition to the difficulty of developing process parameters, it is also necessary to have a suitable welding device. Another challenge. L...

Claims

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Application Information

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IPC IPC(8): B23K26/24B23K26/02B23K26/70
CPCB23K26/24B23K26/02B23K26/702Y02E30/30
Inventor 宋丹刘大为李雅范张晨光杜雷王晓文张锁瑶赵志伟黄秀波郑维赵环宇于勇王向春
Owner HARBIN ELECTRIC POWER EQUIP
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