摘要
针对离心泵输出的压力脉动问题,借鉴孔板消除气体脉动的原理,设计了一种带有缝隙的栅板式压力脉动衰减器,并运用Fluent软件对其进行流场仿真,对缝隙宽度和缝隙数两个参数进行优化设计。通过计算发现,栅板式脉动衰减器可以对压力脉动进行衰减。此外,缝隙宽度和缝隙条数均是影响脉动衰减效果和插入压力损失的关键因素,因此,应考虑插入压力损失的同时获得最佳衰减效果。经过对管路通径为DN150的栅板进行计算发现,当缝隙宽度为5 mm、缝隙数为14时,压力脉动率最低,且其压力损失最小。
Focusing on the pressure pulsation of centrifugal pump, a pressure impulses pulsation attenuator with grating is designed, which draws on the experience of gas pulsation elimination by the way of orifice plate. The flow field simulation is done by the software Fluent. Two parameters of the slit width and the slot number are optimized. Through the calculation, it is found that pulsation can be attenuated by grating pressure pulsation attenuator. In addition, the crack width and crack number are the key factors influencing the attenuation effect and insertion loss of pressure pulsation. Therefore, the time when obtaining the best attenuation effect, the insert pressure loss shouM be lower. Through the optimized calculation, when the gap width is 5 mm, the number of cracks is 14, the pressure pulsation rate is the lowest and the pressure loss is minimal.
出处
《船舶工程》
北大核心
2016年第9期67-70,共4页
Ship Engineering
