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Multi-type core block mixed loading metal cooling reactor and management method

A metal cooling and multi-type technology, applied in the field of nuclear reactors, can solve the problems of low utilization rate and large fuel loading, and achieve the effects of enhancing competitiveness, ensuring safety, and improving average unloading fuel consumption

Active Publication Date: 2020-03-06
NUCLEAR POWER INSTITUTE OF CHINA
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Problems solved by technology

[0003] The purpose of the present invention is to provide a multi-type pellet mixed-loaded metal cooling reactor, solve the key problems of the existing liquid metal cooling reactor core uranium-plutonium mixed oxide (MOX) fuel loading capacity, low utilization rate, etc., and improve the liquid metal cooling. Reactor fuel economy

Method used

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  • Multi-type core block mixed loading metal cooling reactor and management method
  • Multi-type core block mixed loading metal cooling reactor and management method
  • Multi-type core block mixed loading metal cooling reactor and management method

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Embodiment 1

[0038] like Figure 1 to Figure 7As shown, a metal-cooled reactor is mixed with multiple types of pellets, and the reactor core is surrounded by a moderator assembly 11, a breeding type fuel assembly 12 is arranged on the sub-periphery, and a power type fuel assembly 13 is arranged in the inner area of ​​the core. The moderating component 11 is composed of several moderating elements 6 arranged in a regular triangular grid, the moderating elements 6 include a cladding 3, and a zirconium hydride metal block 4 is arranged inside the cladding 3 of the moderating element 6, The moderator element 6 has a rod diameter of 9.0 mm, a cladding made of stainless steel, a thickness of 0.65 mm, and a pellet diameter of 7.5 mm. This type of element is fully loaded with zirconium hydride metal blocks 4, and the total height is 1000 mm; the multiplication type fuel The assembly 12 is composed of a number of multiplication fuel elements 7 arranged in a regular triangular grid. The multiplicati...

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Abstract

The invention discloses a multi-type core block mixed loading metal cooling reactor and a management method. Moderation type assemblies are arranged on the periphery of a reactor core of the reactor;proliferation type fuel assemblies are arranged on the sub-periphery of the reactor core of the reactor; power type fuel assemblies are arranged in the inner region of the reactor core of the reactor;each moderation type assembly consists of a plurality of moderation type elements; each moderation type element comprises a cladding shell; zirconium hydride metal blocks are arranged in the claddingshell; each proliferation type fuel assembly consists of a plurality of proliferation type fuel elements; each proliferation type fuel element comprises a cladding shell; beryllium oxide ceramic coreblocks are arranged at two ends in the cladding shell; natural uranium dioxide fuel core blocks are arranged in the middle of the cladding shell; and each power type fuel assembly consists of a plurality of power type fuel elements; each power type fuel element comprises a cladding shell; beryllium oxide ceramic core blocks are arranged at two ends in the cladding shell; and plutonium-uranium mixed oxide fuel core blocks are arranged in the middle of the cladding shell. The multi-type core block mixed loading metal cooling reactor and the management method provided by the invention solve theproblems of great fuel loading capacity, low utilization rate and the like of the existing metal cooling reactor.

Description

technical field [0001] The invention relates to the technical field of nuclear reactors, in particular to a multi-type core block mixed loading metal cooling reactor and a management method. Background technique [0002] Various types of fast neutron spectrum liquid metal cooling reactors have good development potential in nuclear fuel transmutation and multiplication, and are also the main reactor type of the international fourth-generation advanced nuclear energy system. At present, countries around the world have developed a large number of liquid metal-cooled fast neutron reactor designs, some of which have entered the stage of engineering verification, such as: American sodium-cooled fast reactor SMFR and PRISM, Japanese sodium-cooled fast reactor JSFR, Russian sodium-cooled fast reactor BN600 , Chinese sodium-cooled fast reactor CFR600, Russian lead-bismuth fast reactor SVBR-75 / 100, etc. The operating pressure of the liquid metal cooled fast neutron spectrum reactor s...

Claims

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Application Information

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IPC IPC(8): G21C3/322G21C3/326G21C3/60G21C3/62
CPCG21C3/322G21C3/60G21C3/623G21C3/3267Y02E30/30
Inventor 夏榜样孙伟严明宇余红星柴晓明李松蔚李文杰
Owner NUCLEAR POWER INSTITUTE OF CHINA
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