Nuclear power station underwater foreign matter suction apparatus

Abstract

The invention provides a nuclear power station underwater foreign matter suction apparatus. The apparatus comprises a water pump with a motor, a water inlet pipe, a water outlet pipe and a filter barrel connected with the inlet of the water pump and placed over the water pump, the filter barrel comprises a shell, a barrel-shaped filter screen placed in the shell and a top cover hinged to the shell and used for sealing the top of the shell, one end of the water inlet pipe stretches into the filter barrel, the other end of the water inlet pipe is connected with a foreign matter suction pipe, and the water outlet pipe is connected with the outlet of the water pump. The water pump is adopted to form a negative pressure in the filter barrel, so water in a reactor pool goes through the water inlet pipe, enters the filter barrel and is filtered, foreign matters enter the filter barrel with water flow, and above processes are repeated in order to suck the foreign matters in water. The suction apparatus has the advantages of simple structure, small size, easy placement in water by an operator, easy operation, realization of the rapid catching of the foreign matters in water without accurate positioning, and time saving.

Description

technical field [0001] The invention relates to an underwater foreign matter suction device for a nuclear power plant. Background technique [0002] During the operation of nuclear power plants, foreign matter is easily produced in the reactor vessel, such as damaged fuel assembly grid fragments, fallen bolts and nuts, oxide layers, and impurity deposits such as graphite carbon rod powder and metal powder generated during maintenance. These foreign objects must be cleaned up during overhaul, otherwise the water quality of the primary circuit will be reduced, and the fuel assembly, primary circuit equipment, and even the pressure boundary of the primary circuit will be damaged. [0003] Existing foreign body salvage devices can be divided into two types: underwater filtering devices and underwater manipulator grabbing devices. The former is mainly used for water filtration, and can also absorb small and light foreign matter, but the device itself is large in size and weight,...

AI Technical Summary

Problems solved by technology

[0005] In view of the above-mentioned shortcomings of the prior art, the object of the present invention is to provide an underwater foreign matter suction device for nuclear power plants, which is used to solve the problem in the prior art that the small foreign matter in the reactor pool is not easily and easily removed

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