为了满足安全及长周期生产的需要，济南炼油厂丙烷脱沥青装置在1993年进行技术改造时，引进了两台增压泵，投运后发现泵的扬程及流量过大，造成泵出口压力偏高、电机输出功率偏大，导致不必要的消耗。为此，增设了一台变频调速器。该调速器1996年3月投用后运行情况良好，未出现 In order to meet the needs of safety and long-period production, propane deasphalting unit of Jinan refinery introduced two booster pumps when it retrofitted in 1993. When put into operation, it found that the pump head and flow rate were too large, causing the pump outlet pressure to be partial High, the motor output power is too large, resulting in unnecessary consumption. To this end, an additional frequency converter. The governor after running in March 1996 in good condition, did not appear