螺旋槽干气密封气膜特性的近似计算及试验研究  

Approximate Calculation and Test Research on Gas Film Property in the Spiral Grooved Gas Seals

作　　者：张伟政[1] 俞树荣[1] 朱丽[1] 丁雪兴[1,2] 

机构地区：[1]兰州理工大学石油化工学院,甘肃兰州730050 [2]兰州理工大学温州泵阀工程研究院,浙江温州325105

出　　处：《润滑与密封》2010年第9期44-46,共3页Lubrication Engineering

基　　金：国家自然科学基金资助项目(50965010);高等学校博士学科点专项科研基金项目(20096201110001);浙江省科技计划项目(2008C21131);温州市对外科技合作交流项目(H20080018)

摘　　要：从N-S方程出发,推导螺旋槽内稳态微尺度流动场的非线性雷诺方程。应用PH线性化方法,并采用小参数迭代法进行求解,近似求得螺旋槽内气体动压分布的解析解,继而求出泄漏量以及功耗。结果表明:试验测出数值与计算结果较为吻合,表明所建立的螺旋槽干气密封端面间气体流动过程力学和数学模型是正确的,所编制的近似计算程序是可行的。Based on the N-S equation , a nonlinear Reynolds equation for a steady-state and micro-scale flow field was derived . Using PH linearization and small parameter iterative method , the approximate function expression of gas dynamic pressure in the spiral groove was obtained , and the solution of spillage and power lose were found out. The results showthat the established dynamical and mathematical model of the gas flow between seal faces is validated correctly, and the developed program of approximate analysis method is practicable.

关 键 词：螺旋槽 干气密封 雷诺方程 近似计算 

分 类 号：TH113.1[机械工程—机械设计及理论]