Fluid-solid coupling method for opening process of pressure release valve of pressure stabilizer

A technology of fluid-solid coupling and pressure relief valve, which is applied in the direction of instruments, special data processing applications, electrical digital data processing, etc., and can solve problems such as hidden dangers, safety and stability of nuclear power systems that generate severe tremors

Active Publication Date: 2020-10-30
XI AN JIAOTONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] When the regulator pressure relief valve is opened, the working fluid is high-temperature and high-pressure gas, which will cause severe tremors during the opening process, which will bring hidden dangers to the safety and stability of the nuclear power system

Method used

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  • Fluid-solid coupling method for opening process of pressure release valve of pressure stabilizer
  • Fluid-solid coupling method for opening process of pressure release valve of pressure stabilizer
  • Fluid-solid coupling method for opening process of pressure release valve of pressure stabilizer

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Embodiment Construction

[0033] Combine the following image 3 The flow chart shown in the figure takes the dynamic starting process of the pressure relief valve of a typical pressure regulator as an example to further describe the present invention in detail. In addition, the structure of the pressure relief valve of a typical pressure regulator is as follows: figure 1 shown. The regulator pressure relief valve opening process, such as figure 2 As shown, the black thick solid line is the solid domain of the pressure regulator pressure relief valve, the black thin solid line is the fluid domain of the pressure regulator pressure relief valve, the black thin dotted line is the closed state of the solid domain of the pressure regulator pressure relief valve, and the black The thick dotted line is the open state of the moving part of the solid domain of the regulator pressure relief valve.

[0034] The present invention relates to a fluid-solid coupling method for the opening process of a pressure rel...

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Abstract

The invention discloses a fluid-solid coupling method for the opening process of a pressure release valve of a pressure stabilizer. The fluid-solid coupling method comprises the following steps: establishing a simplified geometric model of a safety valve of the pressure stabilizer; respectively carrying out mesh generation on the solid region and the fluid region of the safety valve of the voltagestabilizer to obtain a mesh model of each part; controlling the stress state of the valve to be changed from a closed state to an open state through a user-defined function; carrying out steam flow characteristic calculation in the pressure stabilizer pressure release valve fluid domain grid model range, and carrying out solid mechanical vibration behavior calculation in the solid domain grid model range; achieving bidirectional coupling calculation of the same time step length of the mechanical behavior and the grid displacement through a fluid-solid coupling platform; and adopting a fluid-solid coupling platform is adopted to achieve dynamic flow field analysis inside the pressure release valve of the pressure stabilizer and mechanical behavior analysis of a solid region.

Description

technical field [0001] The invention belongs to the technical field of thermal hydraulic calculation of nuclear reactors, and in particular relates to a fluid-solid coupling method in the opening process of a pressure relief valve of a pressurizer. Background technique [0002] The primary circuit system of the pressurized water reactor nuclear power plant is a closed system. When the temperature of the coolant in the system changes and the volume fluctuates, it will cause a corresponding change in the system pressure. If the system pressure rises or exceeds the design pressure, it will cause the equipment to Damaged by overpressure. The safety valve of the voltage stabilizer is an important device in the primary circuit system. When the system pressure rises to a certain value, the safety valve of the voltage stabilizer opens to relieve the pressure of the system, thereby protecting the system from overpressure. [0003] When the pressure regulator pressure relief valve is...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F30/28G06F30/23G06F119/14
CPCG06F30/28G06F30/23G06F2119/14
Inventor 王明军王嘉诚王莹杰田文喜秋穗正苏光辉
Owner XI AN JIAOTONG UNIV
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