华中科技大学学报（自然科学版）2024，Vol.52Issue(7)：99-105,7.DOI:10.13245/j.hust.240353
基于泄漏率预测模型的蝶阀密封性能研究
Research on sealing performance of butterfly valves based on leakage rate prediction model
摘要
Abstract
In order to improve the sealing performance of containment isolation valves under accident conditions,a leakage rate prediction method was proposed for a DN250 butterfly valve.Combining numerical simulation of the contact interface gap flow of the sealing pair at the micro scale and simulation of the mechanical deformation characteristics of the sealing pair at the macro scale,a quantitative relationship between the leakage rate and various factors was established.By comparing the results with experimental measurements,the effectiveness of the model was verified.The model was applied to the analysis of factors affecting sealing performance,and the results show that reducing the roughness of the sealing surface,increasing the interference amount of the sealing pair,and strictly preventing the negative angle displacement of the valve plate can effectively control the leakage rate of the butterfly valve.However,the influence of material hardness on the leakage rate is not significant.Based on the analysis,a method was proposed to determine the minimum interference amount of the valve sealing pair using the leakage rate as a direct indicator,which can effectively guide the design and maintenance of valve sealing pairs.关键词
蝶阀/泄漏率/预测模型/粗糙度/过盈量Key words
butterfly valve/leakage rate/predictive model/roughness/interference分类
通用工业技术引用本文复制引用
熊江帆,卜玉兵,张国军,许国良..基于泄漏率预测模型的蝶阀密封性能研究[J].华中科技大学学报（自然科学版）,2024,52(7):99-105,7.基金项目
国家重点研发计划资助项目(2020YFB1901402) （2020YFB1901402）
核电安全监控技术与装备国家重点实验室资助项目(K-A2021.420). （K-A2021.420）
