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A process for assembling and welding of radiation supervisory tube

A technology of radiation supervision tube and radiation supervision, which is applied in the field of assembly and welding of radiation supervision tube, to achieve the effect of improving the efficiency of assembly and welding

Active Publication Date: 2017-04-19
NUCLEAR POWER INSTITUTE OF CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The purpose of the present invention is to provide a process for assembling and welding of radiation supervision tubes, to solve the problem that there is no manufacturing process of radiation supervision tubes in China at present, and to achieve the purpose of independent innovation and mastery of core processes

Method used

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  • A process for assembling and welding of radiation supervisory tube
  • A process for assembling and welding of radiation supervisory tube

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Experimental program
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Effect test

Embodiment

[0029] Such as figure 1 As shown, a process for assembling and welding the irradiation supervisory tube in the present invention is carried out on the welding tool. The tooling includes a base made of cast iron with an I-shaped cross section. A connecting piece with a groove is provided in the middle of the connecting piece, and a supporting seat is provided in the connecting piece, and two slopes are arranged on the supporting seat to form a V-shaped groove. Two neck support blocks on a straight line are also provided with a limit reference block between the support base and the neck support block. Formed with an integrated structure, it also includes a four-petal centering member that wraps the irradiation supervision tube. After the four-petal centering member is wrapped on the outside of the irradiation supervision tube, one end is a bottom plug fixed in the rolling assembly on the support seat, and the other end is For the top plug to be placed on the limit reference blo...

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Abstract

The invention discloses a process for assembling and welding an irradiation supervisory tube, which includes (a) preparing welding parts and ultrasonically cleaning them in acetone or alcohol solution for more than 30 minutes; (b) assembling: (c) welding one and a half grooves The end weld of the shell with the blunt side in the plane, followed by the end weld of the other half-slotted shell in the plane with the blunt side; (d) welding of long straight welds on two half-slotted shells: The two welds are welded symmetrically over the entire length at one time to form a long straight weld; (e) Weld the end welds on the remaining two sides of the irradiation supervisory tube. The invention effectively controls the welding deformation in the length direction and the concave deformation on both sides of the pipe body, and at the same time avoids the welding seam collapse at the intersection of the straight seam and the circular seam at both ends caused by the welding deformation, and adopts steps (c) to ( e) Welding is carried out in the welding sequence, the weld penetration depth is accurately controlled between 1.1mm and 1.5mm, and the overall length of the irradiation supervision tube is 1532mm, and the straightness can be controlled within 0.8mm.

Description

technical field [0001] The invention relates to the field of assembling and welding of radiation supervision tubes, in particular to a process for assembling and welding of radiation supervision tubes. Background technique [0002] The radiation monitoring tube is an important part for monitoring the radiation effect of materials on the reactor pressure vessel during the life of the nuclear reactor. It is necessary to obtain the radiation environment data of the reactor pressure vessel, the degree of embrittlement of the material and its development trend, and to evaluate the integrity of the reactor pressure vessel. It is of great significance to revise the operating parameters of the reactor and finally ensure the safe operation of the reactor. Each irradiation supervision tube is mainly composed of a top plug, a bottom plug, two half-slot shells, several temperature detectors and dose detectors, various tensile and impact mechanical samples. The radiation supervision tub...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23K26/24B23K26/60
CPCB23K26/24
Inventor 王泽明王世忠俞德怀陶海燕何祖娟兰光友范永明
Owner NUCLEAR POWER INSTITUTE OF CHINA
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