A device for water level control and waste heat removal of passive spent fuel storage pool

A technology of waste heat discharge and water level control, applied in power plant safety devices, nuclear power generation, nuclear power plant auxiliary equipment, etc., can solve the problems of radioactive diffusion and accident deterioration, and achieve the effect of reducing radioactive water spillover

Inactive Publication Date: 2011-12-14
NORTH CHINA ELECTRIC POWER UNIV (BAODING)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

If not handled properly, it may cause radioactive spread, which will further aggravate the accident

Method used

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  • A device for water level control and waste heat removal of passive spent fuel storage pool
  • A device for water level control and waste heat removal of passive spent fuel storage pool

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Embodiment Construction

[0010] The present invention will be further described below through the accompanying drawings and specific embodiments.

[0011] A passive spent fuel storage pool water level control and waste heat discharge device, including two rows A and B, each row has a pump, a heat exchanger, an ion exchanger and a filter, and the two rows share the inlet and outlet headers , also includes a float filling and draining circuit and a natural circulation cooling circuit.

[0012] The schematic diagram of the float filling and draining circuit and the natural circulation cooling circuit in this embodiment is as follows figure 1 As shown, the float filling and draining circuit is composed of a boron-containing water pool 1, a rubber valve 2, a hinge 3, a lever 4, a one-way valve 5, a float 6, a spent fuel storage pool 9, a water filling valve 11, and an exhaust valve 12; The pool 1 is placed above the spent fuel storage pool 9, the float 6 is placed in the spent fuel storage pool 9, the rub...

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PUM

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Abstract

The invention discloses a water level control and waste heat discharge device of a passive spent fuel storage pool, which belongs to the technical field of nuclear power plant safety equipment. The device of the present invention includes two loops of float filling and draining and natural circulation cooling. The water level of the spent fuel pool is controlled by the float, and at the same time, the cooling function of the water in the spent fuel storage pool can be completed by passive natural circulation. The two loops complement each other. Together, they guarantee the water level control and cooling process of the spent fuel pool. There are many passive modes such as natural circulation, gravity action and pressure action in the device, which are convenient to implement, simple to control, high in reliability, safe and stable.

Description

technical field [0001] The invention belongs to the technical field of nuclear power plant safety equipment, and in particular relates to a water level control and waste heat discharge device of a passive spent fuel storage pool. Background technique [0002] In the event of an accident in a nuclear power plant, especially when the power supply of the plant is lost, the water level in the spent fuel storage pool is too high or too low, which may cause the radioactive water in the spent fuel storage pool to overflow or the spent fuel to be exposed. As a result, the temperature of the spent fuel pool is too high and the spent fuel melts. If it is not handled properly, it may cause the spread of radioactivity, which will further aggravate the accident. At present, in nuclear power plants, the main treatment method for spent fuel is to store the spent fuel in the spent fuel storage pool for at least 300 days before entering the spent fuel reprocessing process. The filling and ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G21D3/06G21D1/02
CPCY02E30/40Y02E30/00
Inventor 周涛李精精洪德训段军
Owner NORTH CHINA ELECTRIC POWER UNIV (BAODING)
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