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High-temperature test device and test method for simulating coolant loss process of spent fuel pool

A technology for spent fuel pool and high temperature test, which is applied in the field of high temperature test devices simulating the loss of cooling process of spent fuel pool, can solve the problems of deviation, lack of circulating water collection device, inability to simulate the storage state and working conditions of spent fuel pool, etc. The effect of improving safety

Active Publication Date: 2016-08-03
CHINA NUCLEAR POWER ENG CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The existing test device has the following disadvantages: 1) A single container is used to hold the heat-conducting rod bundle, and there is no compensation container connected to the holding container, which cannot simulate different storage states and working conditions of the spent fuel pool; 2) There is no circulating water collection device , when the evaporation test is carried out, the water entrained in the gas-liquid two-phase flow stage in the initial stage cannot return to the holding container, resulting in a large deviation between the test and the simulated working conditions

Method used

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Embodiment Construction

[0023] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0024] Such as figure 1 As stated above, the present invention provides a high-temperature test device for simulating the cooling process of a spent fuel pool, which is characterized in that the high-temperature test device includes a heat-conducting rod bundle 2 (used as a simulated spent fuel rod) The storage container 1, the compensation container 3 communicated with the bottom of the storage container 1 through the connecting pipe I4 with the regulating valve 5, and the circulating water collection device 6 arranged on the upper part of the storage container 1 and communicated with the storage container 1, circulate The lower part of the water collection device 6 is also communicated with the upper part of the compensation container 3 through the connecting pipe II9 located at the bottom; The shower cooling device 7; the compensation conta...

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Abstract

The invention relates to a high-temperature test device and a test method for simulating the coolant loss process of a spent fuel pool. The high-temperature test device comprises a container (1), a compensation container (3) and a circulated water collecting device (6), wherein the container (1) is used for containing a heat conduction rod bundle (2); the compensation container (3) is communicated with the bottom of the container (1); the circulated water collecting device (6) is arranged at the upper part of the container (1) and is communicated with the container (1); the lower part of the circulated water collecting device (6) is also communicated with the upper part of the compensation container (3); the outer surfaces of the container (1) and the compensation container (3) are coated with a heat-preservation material; a spraying cooling device (7) is further arranged at the upper part inside the container (1); the compensation container (3) is configured with a plurality of water squeezing rods (8) with different cross section areas. By adopting the high-temperature test device and the test method provided by the invention, simulation on the process of coolant loss, evaporation to dryness, dry burning and spray cooling of the spent fuel pool can be achieved, and moreover, the high-temperature test device is simple in structure, convenient to operate and low in cost and is safe and reliable.

Description

technical field [0001] The invention belongs to the technical field of cooling loss simulation of a spent fuel pool, and in particular relates to a high-temperature test device and a test method for simulating the cooling loss process of a spent fuel pool. Background technique [0002] Nuclear power plant spent fuel pools are used to store spent fuel assemblies discharged from the reactor core and provide cooling functions. After the accident, when the spent fuel pool loses cooling for a long time or leaks water from a breach in the spent fuel pool (referred to as "loss of cooling in the spent fuel pool"), the spent fuel will experience a process of evaporation and exposure, and the temperature of the spent fuel cladding will rise and may be damaged. After the Fukushima nuclear power plant accident in Japan, more attention has been paid to the safety of spent fuel pools. [0003] The spent fuel assemblies stored in the spent fuel pool are unloaded from the core in time and ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G21C17/06G21C17/07G21C17/02
CPCG21C17/02G21C17/06G21C17/07Y02E30/30
Inventor 杨长江贺楷张慧敏周喆郑云涛李汉辰孙燕宇王辉杨伟江小川
Owner CHINA NUCLEAR POWER ENG CO LTD
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