Anti-disengagement protection clamp for nuclear detection detector and anti-disengagement method thereof

Abstract

The invention belongs to the technical field of maintenance in the disassembly process of a reactor of a nuclear power station, and particularly relates to an anti-disengagement protection clamp for a nuclear detection detector and an anti-disengagement method thereof. The anti-disengagement protection clamp comprises an L-shaped structural member, an anti-disengagement gear lever, a return spring, a limiting gear lever, a spring fixing hole A, a spring fixing hole B, a rotating shaft, a clamping hole and a plurality of through holes; the L-shaped structural part is of an integrally-formed L-shaped plate-shaped structure, and the clamping hole is formed in the center of the surface of one end of the L-shaped structural part; and the plurality of through holes are symmetrically formed in the surface of the other end of the L-shaped structural part. According to the anti-disengagement protection clamp for the nuclear detection detector and the anti-disengagement method thereof, when the nuclear detection detector is lifted to a standard transportation position in the main line overhaul work of the nuclear power station, the anti-disengagement protection clamp can be rapidly installed and clamped on the nuclear detection detector and can effectively play a role in protection when the nuclear detection detector is disengaged from a lifting appliance accidentally.

Description

technical field [0001] The invention belongs to the technical field of maintenance during the disintegration process of a nuclear power plant reactor, and in particular relates to an anti-slip protective clamp for a nuclear test detector and an anti-slip method thereof. Background technique [0002] The VVER pressurized water reactor nuclear power plant is equipped with 54 core nuclear detection detectors distributed in the reactor core. Each nuclear detection detector is about 13 meters long and inserted from top to bottom from the reactor protection tube assembly to the active area of ​​the core fuel. , which is used to monitor the neutron flux density of the reactor, so as to realize the monitoring of the reactor power, and at the same time, the monitoring calculation value participates in the shutdown protection logic of the unit. [0003] During the refueling overhaul, in order to remove the seal of the reactor for core refueling, the main line of important overhaul wor...

AI Technical Summary

Problems solved by technology

[0005] Aiming at the prior art, the present invention proposes an anti-slip protection fixture for nuclear test detectors and its anti-slip method, which is used to solve the problem of using the prior art to activate nuclear test detectors from the reactor core in the overhaul main line work of nuclear power plants. When the area is lifted to the standard transportation position, it is easy to cause technical problems such as slippage and bending, low efficiency, and high exposure dose to the staff due to the failure of the connection between the nuclear detector and the existing spreader during the lifting process.

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