Control rod built-in water pressure driving loop and control rod driving device

Abstract

The invention relates to the technical field of nuclear reactor engineering, in particular to a control rod built-in water pressure driving loop and a control rod driving device, the control rod built-in water pressure driving loop comprises a circulating pump, a water conduit, a water supply pipe and a combination valve, the circulating pump is fixed on a pressure vessel, and a water inlet and awater outlet of the circulating pump are located in the pressure vessel; a water inlet of the water supply pipe is used for introducing cooling water in the pressure container through a water diversion pipe and is arranged at a primary side outlet of a heat exchanger in the pressure container, and the water supply pipe is connected with a water outlet of the circulating pump and penetrates throughthe pressure container to be connected with a water inlet of the combination valve; the combination valve is used for supplying water to the hydraulic cylinder of a control rod drive line and discharging water flowing out of the hydraulic cylinder of the control rod drive line back into the pressure container. The device has the advantages of simple driving process and composition equipment and capability of saving arrangement space and equipment cost. Not only is engineering application of a control rod built-in water pressure driving technology satisfied, but also reference is provided forengineering design of built-in driving loops in other industrial fields.

Description

technical field [0001] The invention relates to the technical field of nuclear reactor engineering, in particular to a control rod built-in hydraulic drive circuit and a control rod drive device. Background technique [0002] The built-in control rod driving technology in the prior art, its driving mechanism is placed in the high temperature, high pressure and irradiation environment in the reactor pressure vessel, and three hydraulic cylinders for lifting, transferring and clamping are used to sequentially drive the transmission and clamp two hydraulic cylinders. The movement of the pin claw mechanism realizes the functions of step-up, step-down and drop of the control rod. [0003] Based on the working principle of the drive mechanism and the characteristics and operating experience of the advanced integrated small water reactor built-in control rod drive line, it is necessary to provide the matching differential pressure and flow rate for the built-in control rod drive li...

AI Technical Summary

Problems solved by technology

[0004] The embodiment of the present invention provides a control rod built-in hydraulic drive circuit and a control rod drive device to solve the problem that the existing control rod drive circuit is arranged outside the pressure vessel of the control rod drive line in the prior art and occupies a relatively large space. Large, high installation cost defect

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