Disassembling and assembling tool for reactor top cable connector in nuclear island and using method of disassembling and assembling tool

Abstract

The invention belongs to the technical field of nuclear island reactor maintenance, and provides a nuclear island reactor top cable joint dismounting and mounting tool and a use method thereof, the nuclear island reactor top cable joint dismounting and mounting tool comprises a power operation control mechanism comprising a control device, and a power motor and an acquisition device which are respectively connected with the control device; the power conversion output mechanism is connected to one side of the power operation control mechanism through the power motor; comprising a motor gear, a second transmission gear, a first transmission gear, a clamping jaw gear and a first transition gear, wherein the first transmission gear is meshed with the motor gear and the second transmission gear respectively; an opening is formed in one side of the clamping jaw gear; the second transition gear is respectively meshed with the second transmission gear and the clamping jaw gear; and one end of the automatic clamping jaw mechanism is fixedly arranged in the clamping jaw gear, and the automatic clamping jaw mechanism and the power operation control mechanism are arranged on the two sides of the power conversion output mechanism correspondingly.

Description

technical field [0001] The present disclosure belongs to the technical field of overhaul of nuclear island reactors, and in particular relates to a disassembly and assembly tool for a reactor top cable joint in a nuclear island and a method for using the same. Background technique [0002] The statements in this section merely provide background information related to the present disclosure and do not necessarily constitute prior art. [0003] Due to the large number of equipment in the nuclear reactor control and protection system of the nuclear power plant, during each unit overhaul, as the key path of the overhaul, the main work includes the removal and installation of the reactor top instrument control cable and the communication cable of the neutron measurement system, as well as pulling out the neutron temperature measurement channel. At present, it can only be carried out by manpower, which mainly covers the disassembly and assembly of hundreds of multi-specification ...

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Problems solved by technology

[0003] Due to the large number of nuclear reactor control and protection system equipment in nuclear power plants, during each unit overhaul, as the critical path of overhaul, the main work includes removing and installing the reactor top instrument control cable and the communication cable of the neutron measurement system, and pulling out the neutron temperature measurement channel. At present, it can only be done by manpower, mainly covering the disassembly and assembly of hundreds of multi-specification I&C cable threaded end connectors on the cement wall side of the reactor shaft, and the disassembly and assembly of hundreds of I&C cable threaded end connectors on the control rod drive mechanism side. installation and dismantling of dozens of neutron measurement channels, with a total of more than 500 work objects. This work needs to be carried out for a long time in a relatively harsh environment such as narrow space, high ambient temperature, and high ambient radiation dose. Since it can only be completed by manpower , the number of staff required is large, and the above work can only be completed under the condition of multiple rotations of staff. According to previous work statistics, the disassembly and assembly of cables takes a long time on the critical path of overhaul, and the collective dose of personnel is large. At the same time, due to the long continuous operation time , there is a risk of heat stroke for personnel; in view of this, the work efficiency of disassembly and assembly is extremely low

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