Integral reactor passive reactor cavity runner system and application method thereof

A reactor cavity and reactor technology, applied in the direction of reactors, nuclear power generation, reduction of greenhouse gases, etc., can solve the problems of non-integrated reactors, etc., and achieve the effects of improving safety performance, reducing pressure, and maintaining integrity

Active Publication Date: 2013-11-13
NUCLEAR POWER INSTITUTE OF CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

PWR nuclear power plants currently in service and under construction in the world do n

Method used

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  • Integral reactor passive reactor cavity runner system and application method thereof
  • Integral reactor passive reactor cavity runner system and application method thereof

Examples

Experimental program
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Effect test

Example Embodiment

[0026] Example 1

[0027] like figure 1 , 2 shown.

[0028] The integrated reactor passive reactor cavity flow channel system includes reactor cavity 3 and reactor pit 5, and an annular main shielding wall between the reactor cavity 3 and the reactor pit 5, the reactor pit 5 is located below the main shielding wall, and the reactor The cavity 3 is located above the main shielding wall; the reactor cavity 3 and the reactor pit 5 are communicated through the flow channel 4, the end of the flow channel 4 close to the reactor pit 5 is provided with a windshield 7, and the top of the reactor cavity 3 is provided with a gas release hole 8, like figure 2 As shown, the reactor pressure vessel is installed in the annular space of the main shield wall.

[0029] The conventional reactor has no flow channel 4, and the flow channel of the present invention is connected with the cooling water source outside or inside the reactor building. When an accident occurs, the cooling water sou...

Example Embodiment

[0043] Embodiment 2

[0044] like figure 1 , 2 shown.

[0045] The integrated reactor passive reactor cavity flow channel system of the present invention includes an isolation valve 2, an L-shaped flow channel, a circular or square reactor cavity 3, a circular or square reactor pit 5, and a gas release hole 8. The reactor cavity area about 150m 2 , the headroom is about 6m.

[0046] When a LOCA accident occurs, the reactor cavity is filled with a large amount of steam. After the high-pressure and medium-pressure safety injections into the reactor are completed, the isolation valve 2 is opened, and the water volume is about 1200m. 3 After the internal displacement tank 1 injects water into the reactor cavity 3 by gravity, the water flows into the reactor cavity 5 through two flow channels 4 with a flow cross-section of 400mm×400mm. With the accumulation of the injected water, the submerged water level gradually rises, gradually submerging the reactor pit and the reactor ca...

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PUM

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Abstract

The invention discloses an integral reactor passive reactor cavity runner system and an application method thereof. The integral reactor passive reactor cavity runner system comprises a reactor cavity and a reactor pit as well as an annular main shield wall positioned between the reactor cavity and the reactor pit, wherein the reactor pit is formed below the main shield wall, and the reactor cavity is positioned above the main shield wall; the reactor cavity and the reactor pit are communicated through an L-type runner; one end, close to a reactor pit, of the runner is provided with a wind shield, and the top of the reactor cavity is provided with two gas releasing holes. The integral reactor passive reactor cavity runner system and the application method thereof provided by the invention have the advantages that a passive reactor cavity runner structure can submerge the reactor cavity and the reactor pit of an integral reactor in a passive manner, cool a reactor pressure vessel, maintain the integrity of the reactor pressure vessel, prevent the reactor pressure vessel from being melted out through a reactor core melt, provide the injection flow for cooling a reactor core of the reactor for a long time, and prevent risks of the overpressure and hydrogen gathering explosive of the reactor cavity of the integral reactor.

Description

technical field [0001] The invention relates to an integrated reactor. As an innovative reactor type, the integrated reactor has high safety, creates conditions for multi-purpose nuclear energy, and can be used for nuclear energy power generation, nuclear energy urban district heating, nuclear energy industrial process heat supply, and nuclear energy seawater desalination, etc. . The present invention provides an integrated reactor passive reactor cavity flow channel structure scheme, as a part of special safety facilities, it can provide water flow channel for reactor cavity submerged cooling reactor pressure vessel in a passive way after LOCA accident, and provide steam diffusion Provide a release channel and provide an effective hydrogen diffusion flow channel for preventing hydrogen gas accumulation and explosion after a severe accident. Background technique [0002] When a reactor loses water accident, a large amount of mass energy is released into the containment vess...

Claims

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Application Information

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IPC IPC(8): G21C15/18G21C9/004G21C9/06
CPCY02E30/40Y02E30/30
Inventor 秦忠宋丹戎李庆
Owner NUCLEAR POWER INSTITUTE OF CHINA
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