A test system and test method for a nuclear reactor passive shutdown device

Abstract

The invention provides a testing system for a nuclear reactor passive shutdown device and a testing method thereof. The system comprises a hydraulic loop system composed of a pump pre-regulation monitoring module, a main circulation loop module, a bypass loop module, a testing system discharging module and a related pipeline, and an instrument, a passive shutdown device testing body composed of a supporting steel platform, a control rod sleeve, a passive control rod model and a hoisting mechanism thereof, and a measurement control system composed of a rod position measurement module, an information monitoring and acquisition module, a remote control module and a related lead wire, and a cable; a working medium which is heated to a testing temperature value starts from a centrifuge pump and is subjected to flow regulation, and then enters a test section; the working medium is used for keeping the passive control rod model suspended in the control rod sleeve through hydraulic power, flows out from the testing body and then returns back to a water tank to form closed circulation; the invention provides the testing method of the system; and the testing system provided by the invention has the advantages that a whole structure is simple and easy to operate, the cost of materials and the working medium is low, and key parts and equipment of the testing section adopt detachable designs so that the testing system is convenient to upgrade and modify.

Description

technical field [0001] The invention belongs to the technical field of verification test research on equipment performance of a protection system of a nuclear power plant, and in particular relates to a dynamic characteristic test system and a test method for a passive shutdown device of a hydraulic suspension nuclear reactor. technical background [0002] It is an important prerequisite to protect the safety of nuclear reactors to be able to shut down the reactor in an abnormal situation. The conventional shutdown system relies on the operator to achieve the purpose of safe shutdown by regulating the equipment when the reactor is abnormal or an accident occurs. However, these active shutdown systems rely on external power supply and correct operation of personnel, and require a certain response time. and may fail. In order to further reduce the probability of accidents and improve the inherent safety of the reactor system, a variety of passive emergency shutdown devices fo...

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Problems solved by technology

[0006] The purpose of the present invention is to provide a passive shutdown device for a simulated hydraulic suspension nuclear reactor in view of the fact that the above-mentioned test device or test system is not applicable or does not meet the requirements of the nuclear engineering field for the experimental research of the hydraulic suspension passive shutdown device The test system of dynamic characteristics, the system of the present invention can realize the reasonable simulation of the lifting process of the passive shutdown components, the steady state operation process, the rod drop process of the loss of flow accident, and the dynamic response characteristics of the components when the flow fluctuates, and then study different structures The influence of design parameters and different test parameters on the action characteristics of passive shutdown components, repeated tests are carried out to verify the reliability of passive shutdown devices, and at the same time, the system parameters can be easily and quickly adjusted, and the control rods in the test section Carry out visual research on the movement situation, obtain a large number of test parameters such as rod position, pressure, pressure drop, flow rate, temperature, etc., in order to conduct in-depth research on the characteristics of the hydraulic suspension passive shutdown device Provide a theoretical basis for the design, construction and operation of

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