Technology used for assembling and welding irradiating supervision pipe

Abstract

The invention discloses a technology used for assembling and welding an irradiating supervision pipe. The technology comprises the steps that a, a weld part is prepared and cleaned in an acetone or alcohol solution for 30 min or more ultrasonically; b, assembling is carried out; c, end weld joints of the plane where the truncated edge of one semi-groove shell is located are welded, and then end weld joints of the plane where the truncated edge of the other semi-groove shell is located are welded; d, the long and straight weld joints on the two semi-groove shells are welded, wherein the two weld joints are symmetrically welded at a time in a full-length mode to form the long and straight weld joints; e, end weld joints of two rest side faces of the irradiating supervision pipe are welded. Weld deformation in the length direction and internal concave type deformation of the two sides of a pipe body are effectively controlled, and the weld joints of the intersecting parts of the straight joints of the two ends and circular joints due to welding deformation is avoided. Welding is carried out according to the welding sequence from the step c to the step e, weld penetration is controlled between 1.1 mm and 1.5 mm accurately, and the overall length of the irradiating supervision pipe is 1532 mm, and straightness can be controlled within 0.8 mm.

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...

AI Technical Summary

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

Images