离心式高温热油泵预热的探讨

The Research of the Centrifugal High Temperature Oil Pump Preheating

针对某石化炼油厂常压渣油泵在泵大修后预热过程中,出现叶轮口环和壳体口环局部咬死,泵二次检修的案例,分析高温热油泵发生咬死或抱轴故障的原因,探讨高温热油泵合理设置暖泵线、正确控制暖泵流量和温升速率的方法。

During once pump preheating period after maintenance at Refinery Plant, partial seizure occurred between the impeller ring and the casing ring, which caused the trouble of pump repeat service. This dissertation is aiming at this accident, trying to analyze the reason and to research the proper pump preheating method with regard to preheating pipeline layout, preheating flow rate control and preheating rate.