Special spreader for nuclear power plant containment cooling water storage tank and its lifting method

Abstract

The invention provides a special lifting device for a cooling water storage tank of a nuclear power station containment and a lifting method of the lifting device. The special lifting device for the cooling water storage tank of the nuclear power station containment is used for lifting the cooling water storage tank. The cooling water storage tank is provided with inner and outer turns of lifting points on lifting sides. The special lifting device comprises a transition beam, pulling devices, ropes, adjustable pull rods and force meters; the transition beam is provided with a lifting tool connection part and a plurality of rope connection parts, the lifting tool connection part is arranged on the upper side, and the plurality of rope connection parts are arranged on the lower side and are distributed on the circumference at intervals; each rope connection part is articulated with the upper end of each pulling device, and the lower end of each pulling device is connected with the one rope in a hanging manner; one end, namely the outer end, of each rope is connected with the outer turn of lifting points for lifting the cooling water storage tank, and the other end, namely the inner end, of each rope is connected with the inner turn of lifting points for lifting the cooling water storage tank; the ropes are connected with the adjustable pull rods and the force meters, the adjustable pull rods are used for adjusting the lengths of the ropes, and the force meters are used for metering tensile loads born by the inner and outer turns of lifting points.

Description

technical field [0001] The invention relates to a sling for the construction of a containment shell of a nuclear power plant and a hoisting method thereof. Background technique [0002] Traditional pressurized water reactor nuclear power plants usually implement the containment cooling function by the containment spray system. After the accident, the spray pump arranged in the auxiliary building outside the containment is used to realize active cooling. The hoisting of the cooling water storage tank of the traditional PWR is carried out by the crane inside the plant. The hoisting weight of the equipment is small, the height is low, and it is relatively simple. [0003] A new type of nuclear power plant containment cooling water storage tank is constructed using the AP1000 nuclear power technology of Westinghouse Corporation of the United States, and it is an important component of the passive containment cooling system of the AP1000 nuclear power plant. The containment cool...

AI Technical Summary

Problems solved by technology

As a water tank container, the interior is empty, and it is made of a single wall panel structure material, so if the force is unbalanced during the hoisting process, it will easily cause deformation, which will have a great impact on the installation

[0007] In addition, the position of the module is high, and the lifting operation of the module needs to go over the conical steel roof of the factory building. The lifting height is 101m, and the lifting risk and difficulty are great.

Images