Passive emergency cooling system for severe accident in reactor

A serious accident and emergency cooling technology, applied in reactors, cooling devices, nuclear power generation, etc., can solve problems such as destruction, failure of the core pressure vessel, containment cooling system, and difficulty in long-term cooling of the water injection tank, and achieve a reasonable valve arrangement. Effect

Inactive Publication Date: 2012-04-25
WINJET HIGH TECH INVESTMENT BEIJING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] 1) Peripheral power sources fail under the influence of natural disasters and serious accidents beyond the design basis, safety-level diesel generators and other power sources are destroyed, and the core pressure vessel and containment cooling system also fail;
[0004] 2) A large number of electronically controlled and driven equipment, instruments, valves, etc. fail in the event of natural disasters and serious accidents exceeding the design criteria, high temperature, high pressure, high h

Method used

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  • Passive emergency cooling system for severe accident in reactor
  • Passive emergency cooling system for severe accident in reactor
  • Passive emergency cooling system for severe accident in reactor

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0025] Example 1:

[0026] Such as image 3 As shown, the present invention consists of the following equipment:

[0027] 1- High-level pool water supply pump; 2a-2g- passive control valve group, except for 2C for high-temperature and high-pressure shuttle welding check valves, the others are shuttle-type micro-return valves and 3- mobile pump interface; 4- high-level pool water supply Pipe; 5-High-position pool; 6-core pressure vessel cooling; 7-containment outer roof truss; 8-steel containment shell cooling; 9a-9c-contaminated pool cover; 10a-10c-contaminated pool suction device; 11 -Light pollution treatment device; 12- Moderate pollution treatment device; 13- Heavy pollution treatment device; 14a-14c- Boost pump; 15- Passive containment outer sprinkler; 16- Passive booster; H 1 -The submerged water level in the containment is 1; H 2 -Submerged water level 2 in the containment; 90, 90a-passive main water supply pipe; 100-return pipe after water treatment

[0028] The cooling inje...

Example Embodiment

[0077] Example 2:

[0078] The connection between the present invention and the prior art 2 is as Figure 5 As shown, including the following equipment:

[0079] 1-core pressure vessel; 2-core coolant system; 3-core coolant pump; 4-evaporator; 5-stabilizer; 6-passive waste heat exhaust exchanger; 7-refueling water tank; 8 -Core makeup water tank; 9-safety water injection tank; 10-steel containment vessel; 11- deflector; 12-external cooling air inlet; 13-water film evaporation; 14-PCS gravity water tank; 15-natural convection air Export, 16-Newly added passive containment outer sprinkler

[0080] Parts 63, 73, 67, 77, 91 are passive shuttle micro-resistance or shuttle check valves, and parts 83, 85 are high temperature and high pressure shuttle welding check valves.

[0081] Parts 61, 71, 81, 66, 76, 88, 88a are electric, manual, robotic, remote, on-site control shut-off valves, and the reactor is normally closed during normal operation.

[0082] Parts 62, 72, 82, 89 are passive, manu...

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Abstract

The present invention relates to a passive emergency cooling system for a severe accident in a reactor. The purpose of the present invention is to solve the reactor cooling problem after the failure of the cooling system by the disaster and the severe accident. According to the system, a high position pool, a heavy pollution pool, a moderate pollution pool and a light pollution pool are arranged outside the reactor; a first branch of a high position pool water supply pipe is connected with a reactor core pressure container by a shuttle type check valve; a second branch is connected with a safety housing by a shuttle type check valve; a third branch is connected with a spraying device on an outer room ventilation hole by a shuttle type check valve; a first water outlet pipe on the safety housing is connected with a repeat pollution pool by a shuttle type check valve; a second water outlet pipe on the safety housing is connected with the moderate pollution pool by a shuttle type check valve; a third water outlet pipe of the outer room is connected with the light pollution pool by a shuttle type check valve; all the position pools are provided with cover plates; each position pool is provided with a boosting pump, wherein the polluted water is pumped from the pools by water aspirators, and reflows to the high position pool after passing through the shuttle type check valves and pollution water treatment devices.

Description

Technical field: [0001] The present invention relates to nuclear power plant core cooling, depressurization waste heat removal system, especially related to the passive emergency hydraulic cooling system in which the power source is destroyed due to earthquake and tsunami, and the above system cannot work. Background technique: [0002] The existing reactor injects water into the core pressure vessel through the water cooling system of the external power source to cool the cooling water. The cooling system is composed of a water injection pump, an electric drive valve and a pipeline. Inject water. The cooling water drainage system of the core and containment is also composed of drainage pump electric drive valves and pipelines. The existing cooling system has the following disadvantages: [0003] 1) Peripheral power sources fail under the influence of natural disasters and serious accidents beyond the design basis, safety-level diesel generators and other power sources are...

Claims

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Application Information

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IPC IPC(8): G21C15/18
CPCY02E30/40Y02E30/30
Inventor 曾祥炜
Owner WINJET HIGH TECH INVESTMENT BEIJING
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