In order to explore the influence of different pumping ring parameters on the temperature rise and pumping performance of sealing chamber.Based on the optimization model of the pumping ring used by the company before,considering the viscous dissipation effect,the commercial FLUENT software was used to simulate two kinds of spiral pump effect rings with different structural parameters,and the effects of rotational speed,viscosity,the gap between the outer diameter of the pumping ring and the inner diameter of the stationary part and the thread length on the dissipative temperature rise and pumping performance were compared and analyzed.The results show that the increase of speed,viscosity and thread length is beneficial to improve the pumping performance,but the pumping performance decreases with the increasing of the clearance between the outer diameter of the pumping ring and the inner diameter of the stationary part.The dissipative temperature rise increases gradually with the increase of the rotational speed and thread length,and increases first and then decreases with the increase of the clearance between the outer diameter of the pumping ring and the inner diameter of the stationary part.The dissipative temperature rise of the pumping ring increases gradually with the increase of the viscosity before optimization,but decreases gradually after optimization.The research results provide a theoretical basis for the study and design of the flow law of spiral pumping ring based on viscous dissipation.
mechanical sealspiral pumping ringpump headdissipation of viscosity
维普
万方数据
