Analysis and Improvement of Auxiliary Feedwater System Excessive Flow Based on 1D-3D Models

Zeng Chang; Lai Jianyong; Duan Yongqiang

Feb. 2025

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Article Navigation > Nuclear Power Engineering > 2014 > 35(S1): 93-96

Zeng Chang, Lai Jianyong, Duan Yongqiang. Analysis and Improvement of Auxiliary Feedwater System Excessive Flow Based on 1D-3D Models[J]. Nuclear Power Engineering, 2014, 35(S1): 93-96.

Citation:

Zeng Chang, Lai Jianyong, Duan Yongqiang. Analysis and Improvement of Auxiliary Feedwater System Excessive Flow Based on 1D-3D Models[J]. Nuclear Power Engineering, 2014, 35(S1): 93-96.

Zeng Chang, Lai Jianyong, Duan Yongqiang. Analysis and Improvement of Auxiliary Feedwater System Excessive Flow Based on 1D-3D Models[J]. Nuclear Power Engineering, 2014, 35(S1): 93-96.

Citation:

Zeng Chang, Lai Jianyong, Duan Yongqiang. Analysis and Improvement of Auxiliary Feedwater System Excessive Flow Based on 1D-3D Models[J]. Nuclear Power Engineering, 2014, 35(S1): 93-96.

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Analysis and Improvement of Auxiliary Feedwater System Excessive Flow Based on 1D-3D Models

Science and Technology on Reactor System Design Technology Laboratory, Nuclear Power Institute of China, Chengdu, 610041, China

Received Date: 2013-12-25
Rev Recd Date: 2014-03-02

Available Online: 2025-02-15

Abstract

Abstract

This paper uses the k-εturbulence model to simulate the three-dimensional flow condition of auxiliary feedwater system（ASG） orifice,and obtains the characteristics of the velocity,pressure distribution and the relationship between flowrate and pressure drop.Subsequently,combined with the calculated orifice characteristics,the one-dimensional simulate model of ASG is established to analyze the alarm problem caused by the gas stripper excessive flow during the pre-service test,whereafter an improvement method for alarm signal delay is presented.The presented method can solve the problems effectively.
- Auxiliary feedwater system,
- Orifice,
- Gas stripper,
- Simulation