Driving mechanism support structure and control rod driving wire

Abstract

The invention provides a driving mechanism support structure and a control rod driving wire. The driving mechanism support structure comprises a bearing piece, a supporting ring, a ring supporting piece and a lower end hole shrinkage piece, a supporting part is arranged on the inner wall of the annular supporting piece, the lower side of the supporting ring abuts against the supporting part, the upper side of the supporting ring abuts against the bearing piece, the lower portion of the bearing piece penetrates through a center hole of the supporting ring and is detachably connected with the upper end of the driving mechanism, and the upper end of the bearing piece abuts against a component which is arranged in the guide cylinder and is axially fixed, the upper end of the lower-end hole shrinkage piece is fixedly connected with the guide cylinder, the lower end is mounted on the reactor core supporting plate, the lower-end hole shrinkage piece sleeves the outer side of the lower end ofthe driving mechanism, and a gap is formed between the lower-end hole shrinkage piece and the lower end of the driving mechanism. Enough space is reserved for operation of the water pressure cylinderand the pin claw mechanism, the problem that the water pressure cylinder and the pin claw mechanism are unreasonable in stress in the working state is solved, a water diversion pipe of the driving mechanism is not interfered, and the performance and reliability of the driving mechanism are improved.

Description

technical field [0001] The invention relates to the technical field of nuclear reactor engineering, in particular to a driving mechanism support structure and a control rod driving line. Background technique [0002] Built-in control rod drive technology, the drive mechanism is placed in the high temperature, high pressure and irradiation environment in the reactor pressure vessel, and three hydraulic cylinders are used to drive, transfer, and clamp in sequence to move the two sets of pin claw mechanisms , to realize the step-up, step-down and drop functions of the control rod. [0003] Based on the working principle of the driving mechanism, the rationality of its supporting structure directly affects the working performance, service life and reliability of the driving mechanism. The support of the driving mechanism needs to meet the following requirements: in the process of work, the force is reasonable, and no additional force will be generated on the hydraulic cylinder ...

AI Technical Summary

Problems solved by technology

[0004] The embodiment of the present invention provides a driving mechanism support structure and a control rod driving wire to solve the problem of unreasonable force on the hydraulic cylinder and the pin claw mechanism in the prior art when the driving mechanism is working

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