Verification device for in-pile refueling system in liquid-state heavy metal reactor

Abstract

The invention discloses a verification device for an in-pile refueling system in a liquid-state heavy metal reactor. The device mainly comprises a container tank, a reactor top cover, a cock and a drive mechanism, a refueling machine, an out-of-pile translation mechanism, a lifting machine, a simulated fuel assembly and a grid plate. The cock and the drive mechanism are concentrically arranged and supported on the reactor top cover, and mainly comprise a large cock, a large cock drive motor, a small cock, a small cock drive motor and a center measurement column; the small cock is eccentrically arranged on the large cock. The device is capable of simulating a refueling function of the refueling system in the liquid-state heavy metal reactor under a cold-state air environment, realizing replacement of a reactor core fuel assembly, and providing a verifying platform for design and parameter correction of the refueling system in the ADS liquid-state heavy metal reactor. The device is good in running performance, and verifies the feasibility of the refueling system in a double-cock split type central measurement cylinder reactor.

Description

technical field [0001] The invention belongs to the technical field of refueling of an accelerator-driven subcritical nuclear reactor (ADS reactor for short), and in particular relates to a verification device for an internal refueling system of a lead-bismuth cooled nuclear reactor. Background technique [0002] Accelerator Driven subcritical system (Accelerator Driven subcritical System, ADS) is composed of proton accelerator, liquid heavy metal spallation target and transmutation nuclear waste subcritical reactor. It is a new type of nuclear waste transmutation, nuclear fuel proliferation and energy generation system. Its basic The principle is to use the protons produced by the accelerator to bombard the heavy metal spallation target to generate spallation neutrons, which drive the nuclear fuel in the reactor to undergo a nuclear reaction, and realize the functions of transmutation treatment of nuclear waste, multiplication of nuclear fuel, and energy production. During ...

AI Technical Summary

Problems solved by technology

[0004] At present, the relevant verification devices of reactor refueling systems at home and abroad have been investigated. In China, only the China Experimental Fast Reactor has built a bench for the key equipment of refueling in the reactor, but the fast reactor verification device is only for two of the key refueling systems in the reactor. The relevant performance of the equipment itself is inspected, but there is no verification of the refueling positioning system, the fixed structure of the components, and the verification of the entire cycle refueling process. There is no relevant verification device in foreign countries.

In addition, there is no in-pile refueling system that can be used in the environment of lead and bismuth at home and abroad, and the design of the in-pile refueling system adopts the innovative design scheme of the double-cock split central measuring column, and a special verification device is urgently needed. Not only It is used to verify the performance of each key component of refueling in the reactor, and it is used to test the overall performance and characteristics of the designed ADS refueling system, to verify the rationality and safety of the design, and to provide support for the refueling construction of lead-bismuth cooled nuclear reactors. Experimental parameters

Images