Control rod guide cylinder hoisting device and control rod guide cylinder hoisting method

Abstract

The invention discloses a control rod guide cylinder hoisting device and a control rod guide cylinder hoisting method. The control rod guide cylinder hoisting device includes a hoisting assembly for connecting with lifting equipment, a gripper actuator for picking and placing the guide cylinder, And at least one set of connecting rod assemblies connected between the suspension assembly and the gripper actuator; the gripper actuator includes a guide rod for extending into the guide cylinder, passing through the guide rod and A moving rod that can move back and forth along the axial direction of the guide rod, an umbrella-shaped support that is connected between the guide rod and the moving rod and that opens and closes with the movement of the moving rod; the umbrella-shaped support is open state, its top is used to abut against the support surface below the guide plate in the guide cylinder; when the umbrella-type support is in the closed state, it extends along the axial direction of the guide rod and fits on the guide rod superior. The invention realizes the safe, accurate and reliable hoisting operation of the control rod guide cylinder.

Description

technical field [0001] The invention relates to the technical field of reactor component assembly, in particular to a control rod guide cylinder hoisting device and a control rod guide cylinder hoisting method. Background technique [0002] The control rod guide cylinder of the nuclear power plant reactor is a key part of the upper reactor internals, which provides positioning, guidance and protection for the movement of the control rods. Due to the long-term relative sliding wear and corrosion of the guide cylinder in the high temperature and high pressure environment, the control rod will lose its guidance and the rod drop time will be exceeded, and even the rod will be stuck. Once this situation occurs, it is necessary to replace the new control rod guide cylinder in time to ensure the normal operation of the power station in subsequent cycles. [0003] Due to the particularity of the nuclear power plant, the replacement of the guide cylinder assembly can only be carried...

AI Technical Summary

Problems solved by technology

[0003] Due to the particularity of the nuclear power plant, the replacement of the guide cylinder assembly must be carried out when the nuclear power plant is shut down, and the effect of hoisting and replacing the guide cylinder located at a depth of more than ten meters in the reactor pool is poor, so for the guide cylinder There are multiple unfavorable factors such as tight time requirements for replacement operations, high safety requirements, and difficult underwater operations

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