Special sling for hoisting extra-large structural modules for nuclear power plants

Abstract

The invention discloses a special sling for the hoisting extra-large structural modules for nuclear power plants, which belongs to the field of mechanical engineering. The special sling comprises a distributor, multiple steel tube beams and multiple connecting nodes, wherein the steel tube beams are connected in pairs by the connecting nodes so as to form balancing beam frames, and the balancing beam frames are respectively connected with the distributor and a hoisting module; and the length of an upper hoist cable can be adjusted according to the position of the center of gravity of a lower hoisting module, so that the distributor is aligned at the center of gravity of the lower hoisting module in the up-and-down direction. According to the special sling, a hydraulic oil cylinder is adopted to be connected with a hanging bracket and hoisted objects, the appearance of the hydraulic oil cylinder is exquisite, the self weight of the hydraulic oil cylinder is reduced, but the hydraulic oil cylinder can bear a large force, and the hydraulic oil cylinder is made of 45# high-quality carbon steel, so that the hydraulic oil cylinder has the characteristics of fatigue resistance, impact resistance, non-magnetism, and the like; and the working temperature of the hydraulic oil cylinder can be minus 60-200 DEG C, so that after running for 6000 hours, the hydraulic oil cylinder with super-long service life has no fault. Therefore, the hanging bracket and the hoisted objects connected simply and conveniently, errors are easy to control, and the service life is long.

Description

technical field [0001] The invention relates to special equipment for nuclear power plants in the field of mechanical engineering, in particular to a special hoisting tool for the super large structural module CA20 / CA01 of the nuclear power plant. Background technique [0002] The largest structural modules in the AP1000 nuclear power plant adopting the third-generation nuclear power technology are CA20 and CA01, among which CA20 has the functions of nuclear fuel storage, transmission, heat exchange and nuclear waste collection, and is composed of 18 rooms composed of walls and floors. Box box plate steel structure structure. The module size is about 21m×14m×21m, and the designed total weight is about 845 tons (excluding the concrete poured in the box). The CA01 module is a nuclear island evaporator and refueling pool module, with a total of 47 sub-modules, with an overall size of about 25m×29m×26m and a total weight of about 450 tons. CA20 and CA01 structural modules have...

AI Technical Summary

Problems solved by technology

However, the connection between the fixed pulley and the movable pulley system of this technology is complicated, the sling is very long, and the connection with the movable pulley shaft is prone to deviation;

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