A method for coupling thermal hydraulic response and mass energy release of a containment vessel
A technology of thermal hydraulics and containment, applied in data processing applications, special data processing applications, instruments, etc., can solve problems such as multiple equipment, reduced power plant economy, and high containment pressure
Pending Publication Date: 2021-07-30
CHINA NUCLEAR POWER ENG CO LTD
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Problems solved by technology
[0004] Newly built nuclear power plants need to carry out accident analysis of design extension conditions. If a conservative calculation method is used, the calculated containment pressure may be higher than the design pressure, which will lead to the need for more equipment and reduce the economic efficiency of the power plant.
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[0026] In order to make the object, technical solution and advantages of the present invention more clear, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.
[0027] The present invention is a calculation method that adopts system analysis software and containment analysis software to couple, that is, uses system analysis software to calculate the mass-energy release of high-energy pipeline breaches, and uses containment analysis software to calculate the thermal-hydraulic response of containment , a more realistic simulation of the system is carried out through coupled calculations.
[0028] The method for coupling thermal-hydraulic response and mass-energy release of containment of the present invention includes the following steps:
[0029] (S01) ...
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The invention relates to a method for coupling thermal hydraulic response and mass energy release of a containment vessel, which comprises the following steps: calculating the mass energy release of a high-energy pipeline crevasse by using system analysis software, calculating the thermal hydraulic response of the containment vessel by using containment vessel analysis software, coupling the thermal hydraulic response of the containment vessel with the mass energy release, taking the calculation results of the two kinds of software as input boundaries of each other, and obtaining a practical simulation result finally through multiple iterations. According to the nuclear power plant accident analysis method, the problem that part of accident sequence calculation is too conservative is solved, new mitigation measures are avoided, the safety requirement is met, and therefore the economical efficiency of a nuclear power plant is improved.
Description
technical field [0001] The invention belongs to the design technology of nuclear power plants, and in particular relates to a method for coupling thermal-hydraulic response and mass-energy release of containment shells. Background technique [0002] All pressurized water reactor nuclear power plants are equipped with containment, and the design of the containment and its related systems must ensure that the nuclear power plant achieves radioactivity containment, protection against external and internal hazards, and biological shielding. Containment design features include maintaining pressure and temperature within acceptable limits. Once a high-energy pipeline rupture accident occurs in the containment, the pressure and temperature of the containment will rise due to the high-temperature and high-pressure water and steam mixture entering the containment space, and will reach a stable state after a period of time. During this accident, the free volume of the space inside th...
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IPC IPC(8): G06F30/20G06F30/17G06Q50/26G06F119/08G06F119/14G06F119/18
CPCG06Q50/265G06F30/17G06F30/20G06F2119/08G06F2119/14G06F2119/18
Inventor 孙燕宇郑云涛杨长江詹经祥周蓝宇韩硕
Owner CHINA NUCLEAR POWER ENG CO LTD