Preliminary Study on the Effect of the Seal Gap on Auto Cooling Pump
For vehicle engine cooling pumps,to investigate the widely existed performance decline,even failure under high-load operating conditions,the CFD simulation is adopted to investigate the effects of the seal gap size on the pump performance.Com-pletely sealed,Gap size 0.2 mm,0.3mm,no seal,four different sealing conditions are investigated respectively.The results show that,with seal failure,the pump performance is dropped to 60% of the design performance.While even with 0.2mm gap,the pump performance is decreased by 10%.Considering that the cooling pump is always operating under vibration environment,and it is difficult for the commonly used mechanical seal to guarantee safety.Subsequently,a canned cooling pump structure is proposed, and is investigated preliminarily.
国家科技期刊平台
NSTL
万方数据
维普
