Modeling and simulating method for parameter distribution of condenser of nuclear power plant in the flowing direction of working medium

Abstract

The invention provides a modeling and simulating method for parameter distribution of a condenser of a nuclear power plant in the flowing direction of a working medium. The method comprises the following steps of determining input parameters of the condenser in a working medium flowing direction according to actual condenser structure parameters and initial parameters; according to the actual condenser structure, the internal flow heat exchange process and the actual physical boundary, conducting region division on a condenser simulation model; carrying out simulation calculation through an average parameter simulation calculation model and an integral processing calculation model of the condenser of the nuclear power plant in the working medium flowing direction; establishing a parameterdistribution simulation calculation model of the condenser along the direction of the working medium, and performing simulation calculation; calculating parameters are output, and any parameter distribution of the condenser in the flowing direction of the working medium and the dynamic change of the condenser along with time are obtained. The invention does not depend on specific types, equipmentforms and parameter values of any specific nuclear power plant condenser and can be used for modeling and simulating nuclear power plant condenser equipment under general conditions. The invention hasa good application range and universality.

Description

technical field [0001] The invention relates to a method capable of modeling and simulating a nuclear power plant condenser. Background technique [0002] The nuclear power plant condenser is an important part of the secondary loop steam-water circulation system. The condenser is used to receive the exhaust steam from the steam turbine, cool and condense the exhaust steam, and enter the steam generator after being heated by the feed water heater and deaerator for many times. As the cold source of the secondary circuit system, the condenser of a nuclear power plant plays an important role in the operation of the nuclear power plant. The operating state of the condenser will significantly affect the power generation efficiency of the nuclear power plant. The internal physical process of the condenser of the nuclear power plant is relatively complicated. Generally, the simulation modeling research of the condenser of the nuclear power plant is often carried out by using the lu...

AI Technical Summary

Problems solved by technology

The internal physical process of the condenser of the nuclear power plant is relatively complicated. Generally, the simulation modeling research of the condenser of the nuclear power plant is often carried out by using the lumped parameter method or the division of the control body for calculation and research. These positions and the division of the control body are often fixed. , making it sometimes difficult to get the desired position or the parameters of any internal position

At the same time, in these simulation models, due to the fixed position and division form of the control body, only the parameters of the specific position of the condenser can be calculated, which cannot reflect the distribution characteristics of the overall parameters inside the condenser

For nuclear power plant condensers with different models and possible changes in parameters, generally speaking, the established simulation models have poor versatility and cannot be used for different condenser equipment after simple modifications, and often require re-modeling and Simulation, which will affect the efficiency of modeling and simulation, prolong the cycle of modeling and simulation, and also affect the overall system modeling and simulation of nuclear power plants

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