基于Fluent的上游泵送机械密封性能正交试验研究

提出一种斜线槽上游泵送机械密封,运用正交试验法设计上游泵送机械密封试验方案,基于Fluent软件进行数值模拟试验,分析各个试验参数对密封端面开启力和泄漏量的影响。结果表明:在试验参数的取值范围内,对开启力有显著影响的因素是槽数、径向夹角、槽深、液膜厚度、转速和压差,具体表现为开启力随着径向夹角、槽深、液膜厚度、转速和进出口压差的增大呈上升趋势,随着槽数的增多呈下降趋势;对泄漏量有显著影响的因素是槽深、槽宽比、液膜厚度、转速和压差,具体表现为泄漏量槽宽比、液膜厚度、转速和进出口压差的增大呈上升趋势,随着槽数的增多而呈下降趋势。依据正交试验分析结果,提出初步优化的密封端面结构参数。

Orthogonal Experimental Study on Sealing Performance of Upstream Pumping Mechanical Seal

A upstream pumping mechanical seal with a slant groove was proposed.The experimental scheme of upstream pumping mechanical seal was designed by orthogonal test method,and the effect of each test parameter on the opening force and leakage of the sealing end face was analyzed by the numerical simulation of Fluent software.The results show that within the range of test parameters,the factors that have a significant influence on the opening force of the end face are the groove number,the angle of radial direction,the groove depth,the liquid film thickness in non-groove area,the rotational speed and pressure difference.The opening force is increased with the increasing of the angle of radial direction,the groove depth,the liquid film thickness in non-groove area,the rotational speed and pressure difference,and decreased with the increasing of the groove number.The factors that have a significant influence on the leakage are the groove depth,the groove width ratio,the liquid film thickness in non-groove area,the rotation speed and pressure difference.The leakage is increased with the increasing of the groove width ratio,the liquid film thickness in non-groove area,the rotation speed and pressure difference,and decreased with the increasing of the groove number.According to the results of orthogonal test,the preliminary optimized structural parameters were proposed.