A High Breeder Ratio Reactor Core
A reactor and breeder ratio technology, applied in the field of nuclear reactors, can solve the problem that the nuclear fuel breeder ratio is not very high, and achieve the effects of increasing the capture and absorption cross-section, reducing neutron irradiation damage, and increasing the fission rate.
Active Publication Date: 2019-11-12
HEFEI INSTITUTES OF PHYSICAL SCIENCE - CHINESE ACAD OF SCI
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Problems solved by technology
Therefore, the breeding process of nuclear fuel is accompanied by the consumption of fissile nuclides, and the nuclear fuel breeding ratio of the reactor is not very high.
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[0021] The present invention will be described in detail below with reference to the accompanying drawings and examples.
[0022] The invention provides a reactor core with a high breeding ratio. The design principles are as follows: one is to reduce the consumption of fissile nuclides, and the other is to increase the number of secondary neutrons. Centered from the inside to the outside, it is the outer neutron source area 1, the amplification area 2, the functional area 3 and the shielding area 4, the outer neutron source area 1, the amplification area 2, the functional area 3 and the shielding area 4 are coaxial, such as figure 1 shown.
[0023] The outer neutron source area 1 uses fusion neutrons or spallation neutrons as the neutron source, both of which have relatively high energy and can provide fast neutrons with energy up to MeV to the amplification area 2.
[0024] The amplification area 2 is set on the periphery of the outer neutron source area 1 and between the ou...
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The invention discloses a high breeding ratio reactor core. The reactor core is an external neutron source area centered continuous area, and the continuous area successively includes, from the insideout, an amplification zone, a functional zone and a shielding zone. Mixed fuel of MA nuclide and depleted uranium is placed in the amplification zone, and high-energy neutrons produced by the external neutron source area are utilized to initiate neutron multiplication of MA nuclide and depleted uranium. A convertible material is placed in the functional zone, and neutrons leaked from the amplification zone are employed for fuel breeding. The shielding zone is used for shielding neutrons leaked from a functional component. The high breeding ratio reactor core provided by the invention can realize production of fissile nucleus in a reactor and high consumption ratio of fissile nucleus, i.e. under the circumstance of generating the same fissile nucleus, fewer fissile nucleus is consumed, andthe reactor breeding ratio is high.
Description
technical field [0001] The invention relates to the field of nuclear reactors, in particular to a high breeding ratio reactor core. Background technique [0002] The practice of foreign nuclear energy utilization for half a century has proved that nuclear energy can be used as the main energy or important energy for a country's electric power production. However, the natural uranium resources are close to depletion and are expensive, so the development of high-breeder fast reactors can support the huge demand for nuclear power. [0003] The six reactor types recommended by the Fourth Generation Nuclear Energy Forum advocated by the U.S. Department of Energy are medium-sodium-cooled fast reactors, helium-cooled fast reactors, and lead (bismuth)-cooled fast reactors, all of which are fast breeder reactors with relatively hard neutron energy. The neutron economy is obtained through the spectrum, and the system has a high nuclear fuel multiplication capability. [0004] The br...
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IPC IPC(8): G21C5/12G21C5/02G21C5/20G21C3/60G21G4/02
CPCG21C3/60G21C5/02G21C5/12G21C5/20G21G4/02Y02E30/30
Inventor 吴宜灿杨琪刘超柏云清孙燕婷
Owner HEFEI INSTITUTES OF PHYSICAL SCIENCE - CHINESE ACAD OF SCI