高温高压屏蔽电泵静态阻力系数模拟与试验分析

Simulation and Test Analysis of Static Resistance Coefficient of High-Temperature and High-Pressure Canned Motor Pump

静态阻力系数是高温高压屏蔽电泵内流体经过泵时,叶轮、导叶、蜗室等水力部件对流体的阻碍程度。通过软件对某高温高压屏蔽电泵的水力模型进行建模,模拟分析其静态阻力系数,得出该泵内典型界面的总压、速度流线分布规律。模拟计算后对产品进行水阻试验。通过对比发现试验结果和计算结果相近,变化趋势相似,因此本次计算是合理的。采用基于Reynolds(雷诺)时均Navier-Stockes(N-S)方程和RNG k-ε湍流模型及多重参考坐标系法模拟流场及水力分析,模拟结果对屏蔽电泵水力模型的设计或改进优化具有重要的指导意义。

The static resistant coefficient is the degree of fluid passing by impeller, guide vane, volute and other hydraulic components of the pump. By modeling the hydraulic model of a high-temperature high-pressure canned motor pump with the software, the static resistance co- efficient was simulated and analyzed, the regularities of distribution for the total pressure and speed flow of typical interface of the motor were obtained. After simulation calculation, water resistance test was conducted to the product. It can be found by comparison that the test result and calculation resuh is similar and variation trend is approximate, so this calculation is reasonable. Based on Reynolds time average Navier- Stockes（NS）equation and RNGturbulence model, the flow field simulation and hydraulic analysis were carried out by multiple reference frame method. The simulation result has important guidance significant for design or modification optimization of hydraulic model of canned motor pump.