Underwater fuel conveying trolley and tipping-over device for pressurized water reactor

Abstract

The invention relates to an underwater fuel conveying system for a pressurized water reactor, in particular to an underwater fuel conveying trolley and tipping-over device for a pressurized water reactor. The underwater fuel conveying trolley comprises a trolley capable of running stably inside a fuel conveying pipeline, the trolley is provided with a fuel basket capable of rotating along a fixed shaft alternatively in a horizontal direction and a vertical direction, two sides of the frame of the trolley are provided with steel wire rope leading sheaves, the fuel basket is provided with tipping-over leading sheaves capable of swinging around a pivot, a tipping-over steel wire rope rounds the tipping-over leading sheaves on the fuel basket and the tipping-over leading sheaves on two sides of the trolley, one end of each tipping-over steel wire rope is connected with a winding drum, and the other end of each tipping-over steel wire rope is connected with a counter weight. The underwater fuel conveying trolley has the advantages of simple structure, convenience for debugging and long service life.

Description

technical field [0001] The invention relates to a pressurized water reactor fuel underwater transportation system, in particular to a pressurized water reactor fuel underwater transportation trolley and a tipping device. Background technique [0002] The PWR fuel underwater transport system is a system to realize the underwater transport of fuel components in the reactor building and fuel plant rooms. It includes: fuel transportation pipeline, transportation trolley and tipping device. [0003] When the reactor is loaded for the first time and shut down for refueling, the transport trolley can horizontally transport new fuel from the fuel building to the reactor building or horizontally transport the spent fuel from the reactor building to the fuel building through the underwater transportation pipeline equipment. Since the fuel grabber and the loading and unloading machine operate the fuel assembly in a vertical state, the fuel basket on the transport trolley can use the t...

AI Technical Summary

Problems solved by technology

[0004] Since the transport piping is the pressure boundary of the steel containment of the reactor building, the diameter of its piping equipment is limited

In order to realize the tipping of the fuel assembly from the horizontal (or vertical) state to the vertical (or horizontal) state, and to ensure the structure of the trolley is simple, the existing design is to set up the tilting machine controlled by the hydraulic system in the reactor building and the fuel building respectively. , because each of the two workshops requires a set of hydraulic tipping devices, which leads to complex design and difficulties in installation, commissioning and maintenance. Replace regularly

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