Ⅳ型瓶变温度变流量快速充注分析研究

Rapid Filling Analysis of IV Bottle with Variable Temperature and Flow Rate

针对气瓶快充易超温问题,本文以35 MPa IV型60 L瓶为研究对象,借助CFD方法研究不同工况气瓶各层温度分布,并对充装率进行评估,结果表明:试验与仿真结果保持一致;加注过程压力近线性增加,加注初期温度迅速增加,随后斜率降低;流量较大时,压力上升较快,加注时间明显缩短,加注完成时温度相差不大,但充装率明显降低。综上,变温度变流量加注是一种提高充装率和减少加注时间的有效措施,对快速加注具有一定的参考意义。

Taking 35 MPaⅣ60 L vehicle bottle as the research object,this paper studies the temperature distribution of each layer of bottle under different working conditions by CFD method,and evaluates the filling rate.The results show that:the experimental results are consistent with the simulation results.During the filling process,the pressure increases linearly,the temperature increases rapidly at the initial stage,and then the slope decreases.When the flow rate is larger,the pressure rises faster,the filling time is shortened obviously,the temperature difference at the end of filling is not much,but the filling rate is reduced significantly.In conclusion,variable temperature and variable flow filling is an effective measure to improve the filling rate and reduce the filling time,which has certain reference significance for rapid filling.