Reactor core shroud assembly welding clamping device and clamping and welding method

Abstract

The invention belongs to the technical field of manufacturing and machining of internal components of nuclear power reactors, and discloses a reactor core shroud assembly welding clamping device. The device comprises an inner supporting assembly, an outer hoop assembly and a roller assembly, wherein the inner supporting assembly comprises a plurality of inner supports connected together; each inner support is provided with a positioning layer and jacking layers; the supporting assembly is arranged inside a reactor core shroud assembly; the outer hoop assembly comprises a plurality of outer hoops; universal jacking pieces are arranged on each outer hoop; the outer hoop assembly is arranged on the periphery of the reactor core shroud assembly; the jacking layers of the inner supporting assembly and the universal jacking pieces of the outer hoop assembly are used for fixing a reactor core shroud into an integral part; the roller assembly comprises rollers and a roller frame; the rollers are arranged at the two ends of the reactor core shroud; and the roller assembly enables the reactor core shroud to rotate and change positions on the roller frame. The invention further discloses a clamping and welding method. According to the reactor core shroud assembly welding clamping device and the clamping and welding method, repeated welding can be carried out on the reactor core shroud through one-time clamping, and enough rigid support is provided for deformation after welding.

Description

technical field [0001] The invention belongs to the technical field of manufacturing and processing of nuclear power reactor internal components, in particular to a welding clamping device and a clamping welding method for a reactor core shroud assembly. Background technique [0002] The butt joint of the longitudinal seam is completed by laser welding in the final assembly of the reactor core shroud assembly. Due to the large volume and thick material of the reactor core shroud, the welding process must be supported by effective fixtures. [0003] In the prior art, several ring-shaped support weldments are used as the support body, and the ring-shaped supports are simply connected to form a whole, and multi-point adjustment supports are performed on each ring section. [0004] The support device in the existing weldment structure has only a single support function, and it is difficult to adjust and measure, and the overall structure is not rigid enough, lacks a reliable pos...

AI Technical Summary

Problems solved by technology

[0004] The support device in the existing weldment structure has only a single support function, and it is difficult to adjust and measure, and the overall structure is not rigid enough, lacks a reliable positioning reference, and the overall rigidity cannot completely resist the welding of the workpiece after laser welding stress deformation

Since there are 8 welds in the core shroud, the existing support device cannot be clamped and welded multiple times at one time, resulting in repeated clamping and a lot of useless work

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