摘要
密封端面液膜压力分布情况是阻止密封泄漏的关键因素。采用Pro/E wildfire软件建立上游泵送机械密封几何模型,使用Fluent软件进行三维数值模拟,得到压力分布规律,利用Muijderman无限窄槽理论对动静环端面膜压分布规律进行求解,并与数值模拟结果进行比对,两种方法得到的结论一致,螺旋槽外槽根处存在最大静压,内外径存在一定压差,会产生动压效应,迫使流体被泵送至上游端,有效实现密封。
The pressure distribution of liquid film on the seal face is the key factor to prevent seal leakage.The geometric model of upstream pumping mechanical seal was made by Pro/E wildfire,Three-dimensional numerical simulation was based on Fluent.pressure distribution was obtained.The numerical results were compared with the theoretical calculation which deduced by Muijderman infinite narrow groove theory,and they agree well with each other.The results indicate that the most static pressure locates in the out root of spiral groove,and the pressure difference between the inner and outer diameter will produce the dynamic pressure effect,forcing the fluid to be pumped to the upstream end,thus effectively realizing the sealing.
作者
贺鹏程
HE Peng-cheng(Colleys of Mechanical Engineering,Hunan University ot Arts and Scienco,Changda 415000,China)
出处
《液压气动与密封》
2021年第7期80-83,共4页
Hydraulics Pneumatics & Seals
基金
湖南文理学院科研项目(18YB30)。
关键词
上游泵送
机械密封
理论计算
三维数值模拟
upstream pumping
mechanical seal
theoretical calculation
3-D numerical simulation
