Special hoisting sling and hoisting method for nuclear power station CR10 and reinforcing steel bar composite module

Abstract

The invention relates to a special hoisting sling and a hoisting method for a nuclear power station CR10 and reinforcing steel bar composite module. The special hoisting sling comprises a transition beam, main slings, sling distributors, outside auxiliary slings, inside auxiliary slings and adjustable pull rods. According to the special hoisting sling and the hoisting method for the nuclear power station CR10 and reinforcing steel bar composite module provided by the invention, the special hoisting sling is adopted as connection between a hoist and the CR10 and reinforcing steel bar composite module, the special hoisting sling is connected before hoisting, the transition beam is connected with the hoist, and the adjustable pull rods are connected with inside and outside lifting lugs on the CR10 and reinforcing steel bar composite module. A center-of-gravity position of the CR10 and reinforcing steel bar composite module is adjusted through applying balance weight and adjusting the adjustable pull rods, so that the level degree of a lower port is ensured. The CR10 and reinforcing steel bar composite module is in position through hook-lifting, rotating, walking and hook-dropping of normal hoisting. According to the special hoisting sling and the hoisting method provided by the invention, the deformation of the CR10 and reinforcing steel bar composite module during a hoisting process can be effectively reduced, the level degree of the lower port of the CR10 and reinforcing steel bar composite module is ensured, and the construction safety is ensured.

Description

technical field [0001] The invention relates to the technical field of nuclear power construction and construction, in particular to a special sling and a hoisting method for a combined module of CR10 and steel bars in a nuclear power plant. Background technique [0002] The CAP1000 pressurized water reactor nuclear power plant is a large-scale advanced pressurized water reactor nuclear power unit with my country's independent intellectual property rights developed through re-innovation on the basis of digesting, absorbing, and fully mastering the AP1000 reactor type introduced by my country from the Westinghouse Company of the United States. The CR10 and reinforcement composite module of CAP1000 stack type is composed of CR10 steel frame, external foundation multi-layer reinforcement and reinforcement support, which are used to support the steel containment vessel (CV). Among them, the CR10 steel frame is a circular truss structure composed of 32 sub-units assembled. It is ...

AI Technical Summary

Problems solved by technology

[0004] Aiming at the problem that the existing sling cannot meet the hoisting requirements of the combined module of CR10 and steel bars in the nuclear power plant, the present invention provides a special sling for the combined module of CR10 and steel bars in the nuclear power plant, which can effectively reduce the combined module of CR10 and steel bars in the hoisting process deformation, to ensure the horizontality of the lower mouth of the CR10 and steel bar combination module, and to ensure the safety of construction

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