Annular embedded part structure of nuclear power station dry protection equipment and mounting method

Abstract

The invention provides an annular embedded part structure of nuclear power station dry protection equipment. The annular embedded part structure comprises an annular plate body and anchor bars, wherein the annular plate body comprises a first semicircular annular plate and a second semicircular annular plate which are welded and fixed; the anchor bars are welded on the first annular plate and thesecond annular plate; after the annular embedded part structure is hoisted in place on site, the first annular plate and the second annular plate are horizontally arranged; concrete is poured below the first annular plate and the second annular plate; and an equipment embedded part and a reactor core form a stable whole through the anchor bars. The invention further provides a mounting method of the annular embedded part structure of the nuclear power station dry protection equipment. According to the annular embedded part structure and the mounting method thereof, the problems that the anchorbars mounted on the embedded part site are small in welding operation space, large in welding deformation, long in cross construction time with an internal structure, high in construction safety operation risk, long in construction period of occupying a key path and the like are solved; and by adopting the annular embedded part structure and the mounting method thereof, the annular plates and theanchor bars are spliced and assembled and welded into two semicircular components in a workshop, the annular plates and the anchor bars are hoisted in place on site by utilizing a tower crane, and the two semicircular components are adjusted, reinforced and assembled and welded into the complete equipment embedded part, so that the construction period can be effectively shortened, and the construction efficiency is improved.

Description

technical field [0001] The invention belongs to the technical field of building construction, and relates to the assembly, hoisting and on-site installation of ring-shaped embedded parts for dry protection equipment of nuclear island internal structures, in particular to a ring-shaped embedded part structure and installation method for dry protection equipment of nuclear power plants. Background technique [0002] Units 3 and 4 of Tianwan Nuclear Power Plant adopt Russian WWER-1000 nuclear power technology and meet the international third-generation nuclear power safety requirements. It is the largest nuclear energy cooperation project between China and Russia. The core of the nuclear reactor building (1UJA) is equipped with dry protection equipment, which is used as a barrier to shield the neutron radiation generated by the pressure vessel. The strength anchoring steel bar (hereinafter referred to as "anchor bar") is anchored in the core concrete and forms a stable whole wi...

AI Technical Summary

Problems solved by technology

[0004] The first purpose of the present invention is to solve the problems of narrow welding operation space, large welding deformation, long construction time intersecting with the internal structure, high risk of construction safety operation, and long construction period of occupying the critical path for the on-site installation of the existing nuclear power plant dry protection equipment annular embedded parts. , providing an annular embedded part structure for nuclear power plant dry protection equipment;

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