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Passive residual heat removal system under accident of boiling-water reactor based on characteristics of nanometer fluid

A passive waste heat, nano-fluid technology, applied in the direction of reactor, nuclear power generation, reduction of greenhouse gases, etc., can solve the problems of heat transfer capacity of heat transfer medium and system power limitation, and achieve reliable performance, efficient heat removal, and convenient installation. Effect

Inactive Publication Date: 2014-01-22
NORTH CHINA ELECTRIC POWER UNIV (BAODING)
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Problems solved by technology

[0003] The traditional enhanced heat transfer design method by extending the surface such as microchannels and fins is limited by the heat transfer capacity of the heat transfer medium and the system power

Method used

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  • Passive residual heat removal system under accident of boiling-water reactor based on characteristics of nanometer fluid

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Embodiment Construction

[0010] The invention provides a boiling water reactor passive residual heat derivation system based on the characteristics of nanometer fluid. Below in conjunction with accompanying drawing, concrete structure, working process of the present invention will be further described. figure 1 In the cooling system, a water tank 5 is installed on the top of the reactor containment 15, and the water tank 5 is respectively connected with the inlet pipe 7 and the outlet pipe 8 of the reactor core 6 pressure vessel through the second three-way valve 4 and the first three-way valve 3, The second three-way valve 4 and the first three-way valve 3 are connected to the factory power supply 1 through the valve controller 2; wherein the inlet pipe 7 and the outlet pipe 8 are connected to the steam valve through the second two-way valve 13, the first two-way valve 12 and the steam pipe respectively. The turbine generator 14 is connected; a safety valve 10 is set on the top of the water tank 5, a...

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Abstract

The invention discloses a passive heat removal system of a boiling-water reactor based on the characteristics of a nanometer fluid and belongs to the technical field of equipment and safety of nuclear power stations. The system consists of a valve controller, a water tank, a circulating pipeline, a valve and the like. In the case of unavailability of a station power supply, the quick removal of heat in the boiling-water reactor is realized by using the higher heat transfer characteristic and lower viscosity coefficients of the nanometer fluid and higher natural circulation capacity. The aims of preventing radioactive materials from being discharged and protecting the public and environments are fulfilled. When a severe accident occurs, a safety assurance function is executed and realized. The system is good in backup safety, simple in flow, stable in performance, high in reliability, convenient for implementation and simple to control.

Description

technical field [0001] The invention belongs to the technical field of nuclear power plant equipment safety, and in particular relates to a passive residual heat derivation system under a boiling water reactor accident based on nanofluid characteristics. Specifically, when the BWR loses the off-site power source and the core cannot be cooled in time, the nanofluid with enhanced heat transfer characteristics is used as the coolant to realize the passive operation of the BWR core through the natural circulation loop system. Natural heat removal function. When the off-site power supply is lost, the operation of the system performs the function of cooling the core, and the use of nanofluids can effectively enhance the cooling effect, prevent the discharge of radioactive substances, delay the timing of core melting, and achieve the purpose of protecting the public and the environment. Background technique [0002] The reactors of the Fukushima nuclear power plant in Japan automa...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G21C15/18
CPCY02E30/31Y02E30/30
Inventor 周涛刘平洪德训
Owner NORTH CHINA ELECTRIC POWER UNIV (BAODING)
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