Reinstallation wrench for reactor driving rod

Abstract

The invention belongs to the technical field of reactor maintenance, and particularly relates to a reactor driving rod reinstallation wrench. Comprising an inner-layer wrench and an outer-layer wrench, and the inner-layer wrench is sleeved with the outer-layer wrench which is used for connecting and disconnecting the inner-layer wrench and the driving rod. The inner-layer wrench comprises an inner-layer wrench sleeve, the upper portion of a connecting column is connected with the bottom of the inner-layer wrench sleeve in a socket welding mode, the lower portion of the connecting column is connected with a cross universal joint, the lower portion of the cross universal joint is connected with a connecting rod, an external thread section is arranged on the connecting rod, and a locking nut is meshed with the external thread section and installed on the connecting rod. The pin shaft is installed in a through hole in the lower end of the connecting rod, matched with a J-shaped key groove in the head of the driving rod and used for connecting the wrench with the driving rod. The outer-layer wrench comprises an outer-layer wrench sleeve, an outer-layer wrench handle and a fan-shaped key. According to the invention, the efficiency of driving rod reassembling work is improved, and industrial safety and human error events in the operation process are avoided.

Description

technical field [0001] The invention belongs to the technical field of reactor maintenance, and in particular relates to a return wrench for a driving rod of a reactor. Background technique [0002] The ШЭМ-3 control rod driving mechanism is used to move the control rod up and down and fix it at the top, bottom or middle position. The position information of the control rod can be known through the position indicator. The core is inserted or withdrawn for power start-up, power control, and shutdown. During an emergency shutdown of the reactor, the drive mechanism is de-energized and the control rods fall to the bottom. The control rod driving mechanism consists of five parts: electromagnet assembly, pressure-resistant shell, moving assembly, driving rod and position indicator. As an important part of the control rod driving mechanism, the driving rod is installed in the moving assembly, and its lower part is reliably connected with the control rod assembly through a lockin...

AI Technical Summary

Problems solved by technology

[0006] The object of the present invention is that the present invention provides a reactor drive rod reinstallation wrench, which solves the problems and potential safety hazards existing in the use of the existing Russian drive rod wrench, improves the efficiency of the drive rod reinstallation work, and reduces the suffering of workers. According to the dose, to avoid industrial safety and human error incidents during the operation

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