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Multi-type Pellet Mixed Loading Metal Cooling Reactor and Management Method

A metal cooling, multi-type technology, applied in the field of nuclear reactors, which can solve the problems of low utilization rate and large fuel loading

Active Publication Date: 2021-07-06
NUCLEAR POWER INSTITUTE OF CHINA
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  • Abstract
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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 Pellet Mixed Loading Metal Cooling Reactor and Management Method
  • Multi-type Pellet Mixed Loading Metal Cooling Reactor and Management Method
  • Multi-type Pellet Mixed Loading Metal Cooling Reactor and Management Method

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Embodiment 1

[0038] Such as 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 multiplic...

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Abstract

The invention discloses a multi-type pellet mixed-loaded metal-cooled reactor and a management method. The reactor core is surrounded by a moderation type component, the sub-periphery is a multiplication type fuel assembly, and the inner area of ​​the core is arranged with a power type fuel assembly. The moderating component is composed of several moderating elements, the moderating element includes a cladding, and a zirconium hydride metal block is arranged in the cladding; the multiplication fuel assembly is composed of several multiplication fuel elements, and the multiplication fuel The element includes a cladding, and beryllium oxide ceramic pellets are arranged at both ends of the cladding, and natural uranium dioxide fuel pellets are arranged in the middle; the power type fuel assembly is composed of several power type fuel elements, and the power type fuel element includes a cladding , beryllium oxide ceramic pellets are arranged at both ends of the cladding, and plutonium-uranium mixed oxide fuel pellets are arranged in the middle. The invention solves the problems of large fuel loading and low utilization rate 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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Patent Type & Authority Patents(China)
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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