基于Fluent的供电单元氢气泄漏数值模拟研究  

Numerical Simulation of Hydrogen Leakage in Power Supply Units Based on Fluent

作　　者：徐文英 杨侠[1] 曹吉胤 张刚 罗燕[1] 王新宇 XU Wen-ying;YANG Xia;CAO Ji-yin;ZHANG Gang;LUO Yan;WANG Xin-yu(School of Mechanical&Electrical Engineering,Wuhan Institute of Technology,Wuhan 430205,China)

机构地区：[1]武汉工程大学机电工程学院,湖北武汉430205

出　　处：《机械工程与自动化》2024年第1期27-28,32,共3页Mechanical Engineering & Automation

摘　　要：针对供电单元中容易发生氢气泄漏的问题,利用流体计算软件Fluent并选取合适的气体扩散模型对比分析了不同通风位置和不同送风速度下氢气在耐压壳内的泄漏扩散情况。分析结果表明:耐压壳顶部是氢气聚集浓度最高的地方,是安装氢气探测仪的最佳位置;采用强制通风的方式,通风口设置在反应釜两侧对降低氢气浓度的效果最佳;最佳送风速度为6 m/s,此时可将耐压壳内氢气平均体积分数控制在4%的安全浓度以下。In response to the characteristics of hydrogen leakage in the power supply unit system,a suitable gas diffusion model was selected using the fluid calculation software Fluent.A comparative analysis was conducted on the leakage and diffusion of hydrogen in the pressure shell at different ventilation positions and supply speeds.The results show that the top of the pressure shell is the place with the highest concentration of hydrogen gas,which is the best location for installing a hydrogen detector.Adopting a forced ventilation method,with ventilation openings located on both sides of the reactor,has the best effect on reducing hydrogen concentration.The optimal air supply speed is 6 m/s,and at this time,the average volume fraction of hydrogen in the pressure resistant shell can be controlled below a safe concentration of 4%.

关 键 词：氢气 泄漏与扩散 数值模拟 供电单元 

分 类 号：TM911.42[电气工程—电力电子与电力传动] TP391.7[自动化与计算机技术—计算机应用技术]