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Low-temp nuclear reactor with hypofuel for nuclear power station

A nuclear reactor and spent fuel technology, applied in the field of nuclear reactors, can solve problems such as economics and safety that are not widely accepted, and achieve the effects of improving utilization value, reducing investment and operating costs, and simplifying loading and unloading processes and equipment

Inactive Publication Date: 2003-02-12
李玉仑 +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although there are many conceptual designs of low-temperature heating nuclear reactors at home and abroad, they have not been widely accepted due to economic and safety constraints. Therefore, it is necessary to seek a low-cost, safe and reliable reactor type, which is the decision to promote nuclear heating reactors. key

Method used

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  • Low-temp nuclear reactor with hypofuel for nuclear power station
  • Low-temp nuclear reactor with hypofuel for nuclear power station
  • Low-temp nuclear reactor with hypofuel for nuclear power station

Examples

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Embodiment 1

[0031] The present invention takes a heating stack with a thermal power of 200MW as an example, its structure is as follows figure 1 shown. The core pool 8 and the spent fuel storage pool 15 are surrounded by the concrete biological shielding layer 7. The upper part of the core pool 8 is provided with a coolant inlet pipe 9 and a coolant outlet pipe 10. The side of the core pool 8 is provided with an underwater The loading and unloading channel 14 communicates with the spent fuel storage pool 15, which is sealed by a sealing plug during the operation of the reactor to ensure the isolation between the core pool and the spent fuel storage pool. The spent fuel storage pool 15 can place spent fuel transportation containers and spent fuel storage The compartment is equipped with a discharge trolley 16, and the tunnel is opened during discharge to realize the transfer of spent fuel assemblies. The concrete biological shielding layer 7 is covered with stainless steel to ensure that ...

Embodiment 2

[0033] The difference from Example 1 is that another core structure is to inflate the water pool, and the outlet pressure of the core is formed by using the air pressure, and its structure is shown in FIG. 2 . A gas sealing cover 11 in the shape of a cap is provided on the upper part of the core pool 8 to form a pressurized air cavity 17 filled with air or nitrogen or helium at a certain pressure, and the lower part is the water level fluctuation area of ​​the pool to form a primary gas Seal the barrier. Similarly, an airtight barrier 12 is also provided on the top of the core pool 8 to form a secondary gas barrier, and the area between the gas-tight cover 11 and the airtight barrier 12 on the top of the core pool 8 draws negative pressure to ensure radioactivity Gas does not escape to the environment.

[0034] In order to eliminate the hydrogen and oxygen gas produced by water decomposition and the gaseous iodine and radioactive inert gas produced by fuel fission in the seal...

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Abstract

A low-temp. nuclear reactor using the deleted fuel of nuclear power station has a reactor core in its water pool with a sealing cover. The gas with a certain pressure is aerated in the water pool via the sealing cover. At the side of the water pool, there is a fuel loading-unloading channel communicated with the water pool where the deleted fuel is stored. Its advantages are low cost, high utilization rate of U-resource, and no radioactivity pollution.

Description

Technical field: [0001] The invention relates to a nuclear reactor technology, in particular to a low-temperature nuclear reactor using nuclear power plant spent fuel as the nuclear fuel of the reactor. Background technique: [0002] Nuclear power plant spent fuel is the fuel that has been unloaded because the burnup has reached the expected value and cannot meet the operating requirements of the nuclear power plant. [0003] Generally, about 0.9%-1.1% of uranium-235 remains in the spent fuel assembly unloaded from the pressurized water reactor of a nuclear power plant, and about 0.6% of plutonium-239 and 0.15% of plutonium-241 and other fissionable substances are newly generated, which are available resource. [0004] At present, there are two basic policies for the management of nuclear power plant spent fuel in the world. One is the "one-time" approval policy. The spent fuel of nuclear power plants is not reprocessed, but is directly disposed of after intermediate storag...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G21C1/14
CPCG21C1/14G21Y2004/60G21Y2002/601Y02E30/40Y02E30/30
Inventor 李玉仑马福邦吴英华
Owner 李玉仑
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