Novel ring-cavity multifunctional nuclear system

Abstract

The invention discloses a novel ring-cavity multifunctional nuclear system, comprising a neutron source and a reactor; the neutron source is of cylindrical pipe structure, the center of the reactor is of ring cavity structure, the neutron source is extended through the center ring cavity of the reactor and fixed outside the reactor, a core is arranged in the reactor and around the wall of the center ring cavity of the neutron source, the core is radially supported by inner and outer barrels, the reactor is provided with an internal member, a diversion passage is formed between the internal member and the wall of the ring cavity, and the reactor has an independent reactor-target coupling boundary and is able to be compatible with various neutron source systems; the neutron source and the reactor do not share a common coolant boundary, and the requirement of structural materials for the compatibility of coolants is lowered; no liquid environment is provided outside the neutron source, and structural replacement reliability of the neutron source system is improved. By designing the inner and outer barrels for the reactor and using the coolant diversion scheme, the ring-cavity structure core fixation problem and the coolant stagnation problem are solved, and the safety of the reactor is improved.

Description

technical field [0001] The invention relates to a novel annular cavity multifunctional nuclear energy system. Background technique [0002] Accelerator-driven subcritical system (ADS, hereinafter ADS is the abbreviation of subcritical system) is composed of proton accelerator, spallation target and subcritical reactor. The proton beam produced by the accelerator bombards the heavy metal nucleus to cause a spallation reaction, and a large number of exogenous neutrons are generated during the reaction to drive the reactor. Compared with critical reactors, ADS has more neutron balance for transmutation of minor actinides, harder neutron energy spectrum, higher transmutation support ratio, and stronger transmutation ability. At the same time, the subcritical system itself has good inherent safety. Therefore, ADS is considered to be one of the most possible technical routes to solve the nuclear waste problem. [0003] The neutron source is an important part of the ADS system t...

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Problems solved by technology

[0006] The purpose of the present invention is to overcome the difficulty of replacement of the neutron source and the compatibility of structural materials in the existing common boundary reactor, and provide a simple structure, which can meet the experimental requirements of different types of neutron sources, has higher safety, and is easy to replace A new ring-cavity multifunctional nuclear energy system

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