A kind of annular embedded structure of dry protection equipment of nuclear power plant

Abstract

The invention provides a ring-shaped embedded part structure for nuclear power plant dry protection equipment, which includes a ring plate body and anchor bars. The ring plate body includes two semicircular first ring plates and second ring plates fixed by welding, and the anchor bars are welded at the The first ring plate and the second ring plate; after being hoisted in place on site, the first ring plate and the second ring plate are set horizontally, concrete is poured below, and the embedded parts of the equipment and the core are formed into a stable whole through anchor bars; The installation method of the annular embedded part structure of the dry protection equipment of the nuclear power plant is provided. The invention solves the problems of small welding operation space, large welding deformation, long construction time when intersecting with the internal structure, high risk of construction safety operation, and long construction period of the key path occupied by the embedded parts installed on site. The plate and the anchor bar are assembled and welded into two semicircular components. The tower crane is used to hoist the two semicircular components into place, and the two semicircular components are adjusted, reinforced, assembled and welded into complete equipment embedded parts, which can effectively shorten the construction period and improve construction efficiency.

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 in the internal structure of nuclear islands, in particular to a ring-shaped embedded part structure for dry protection equipment in 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 with the core. Dry...

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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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