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Stack core of water-cooling double-section breeding nuclear reactor as well as nuclear reactor using the same

A technology for nuclear reactors and cores, applied in reactors, moderator/core structures, nuclear engineering, etc., can solve problems such as dense water grid thermal neutron spectrum cores without rod-shaped elements, and achieve good inclusiveness, Effect of high outlet temperature

Inactive Publication Date: 2008-11-05
张育曼 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Japan, Russia, the United States, the European Union, Canada and other countries have proposed supercritical water-cooled fast reactors with rod-shaped elements, all of which are single cores, but have not proposed a dense water grid thermal neutron spectrum core with rod-shaped elements coupled with it.

Method used

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  • Stack core of water-cooling double-section breeding nuclear reactor as well as nuclear reactor using the same
  • Stack core of water-cooling double-section breeding nuclear reactor as well as nuclear reactor using the same
  • Stack core of water-cooling double-section breeding nuclear reactor as well as nuclear reactor using the same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0050] Such as figure 1 As shown, a water-cooled dual-zone breeder nuclear reactor core includes a fast neutron spectrum zone 2 and a thermal neutron spectrum zone 1 sequentially from the inside to the outside, and the fast neutron spectrum zone 2 is composed of several sleeved fuel assemblies, The structure of the casing fuel assembly is as follows figure 2 As shown, each casing fuel assembly includes an upper nozzle seat 21 at the upper end, a middle coaxial middle casing pipe 22 and a center pipe 24 and a lower nozzle socket 25 at the lower end, and the annular space between the middle casing pipe 22 and the center pipe 24 The coating particle fuel 23 coated with multi-layer pyrolytic carbon and silicon carbide with a diameter of 3mm is installed inside, and the middle casing 22 and the central tube 24 are provided with oval small holes on the tube wall; the structure of the coating particle fuel 23 is similar to that of common The high-temperature gas-cooled reactor has ...

Embodiment 2

[0064] Such as Figure 6 As shown, a water-cooled dual-zone breeder nuclear reactor includes a pressure vessel 608 and a core inside the pressure vessel 608 and a control rod bundle mechanism 601. The upper part of the pressure vessel 608 is provided with a coolant inlet pipe 607 and a coolant outlet pipe 603. The core for Figure 5 The shown water-cooled dual-zone breeder nuclear reactor core with an intermediate buffer zone has been described in Embodiment 1, which is divided into fast neutron energy spectrum zone 2, buffer zone 3, and thermal neutron zone 2. Energy spectrum area 1, thermal neutron energy spectrum area 1 adopts dense rod-bundle fuel assemblies, the distance between rods is 1.2mm, and the top of the fuel assembly in the outermost circle of the fast neutron energy spectrum area and the innermost circle of the adjacent buffer zone passes through The elbows are connected in groups of two, and the connection method is the same as that of the fuel assembly in the...

Embodiment 3

[0069] Such as Figure 8 or Figure 9 As shown, a water-cooled dual-zone breeder nuclear reactor includes a pressure vessel 801 and a core and a control rod bundle mechanism placed in the pressure vessel 801. The upper part of the pressure vessel 801 is provided with a coolant inlet nozzle, and the core is the first embodiment and the first embodiment. Embodiment two described Figure 5 The shown water-cooled dual-zone breeder nuclear reactor core with a buffer zone 3 includes a thermal neutron spectrum zone 1, a buffer zone 3 and a fast neutron spectrum zone 2; the upper space of the core has a centrally concave steam-water separation plate 802 There are some small holes (not shown in the figure) on the periphery of the steam-water separation plate 802, and a conduit 803 is connected to the center; an annular core coaming 807 is arranged on the periphery of the core, and the lower end of the core coaming 807 is fixed under the core On the grid plate 808, the upper end of th...

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PUM

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Abstract

The invention belongs to the technical field of the nuclear reactor engineering, particularly to the water-cooling two-region multiplication nuclear reactor core and the nuclear reactor adopting the same, wherein the water-cooling two-region multiplication nuclear reactor core includes a fast neutron energy spectrum area adopting the coating grain sheath fuel assembly and a thermal neutron energy spectrum area adopting the dense rod bundle fuel assembly or the coating grain sheath fuel assembly. The water-cooling two-region multiplication nuclear reactor core of the invention adopts the coating grain sheath fuel assembly, which breaks through the restrain of the stainless steel shell to the outlet scream temperature, realizes the higher coolant outlet temperature, meanwhile the fast neutron core is leaked to the thermal neutron energy spectrum core constituted by the rod bundle fuel assembly dense boom at the subcritical to be multiplied.

Description

technical field [0001] The invention belongs to the technical field of nuclear reactor engineering, and in particular relates to a water-cooled double-zone breeder nuclear reactor core capable of breeding nuclear fuel and a nuclear reactor using the core. Background technique [0002] The research and development of fast breeder reactors with high efficiency (short "doubling period"), high safety and good economy of breeder plutonium or uranium-233 nuclear fuel is the only way to realize the self-sustainability of nuclear power fuel supply and ensure the sustainable development of nuclear power. [0003] The research and development history of fast neutron breeder reactors has been more than 50 years. Except for the successful construction of marine lead (bismuth) cooled fast neutron breeder reactors in the former Soviet Union, it is mainly concentrated in sodium-cooled reactors. The completion and operation of the sub-breeder reactor nuclear power plant has verified that it...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G21C5/18G21C1/00
CPCY02E30/34Y02E30/30
Inventor 张育曼李玉崙
Owner 张育曼
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