芳烃联合装置锅炉给水泵密封失效分析及对策

FAILURE OF MECHANICAL SEAL IN BOILER FEED WATER PUMPS IN AROMATIC COMPLEX AND COUNTERMEASURES

中国石油吉林石化分公司炼油厂芳烃装置悬臂离心泵密封频繁失效。针对主要失效形式,通过数据分析计算,改进了密封设计。改造后,密封的使用寿命大大延长,最长使用寿命1～1.5a,取得了比较满意的效果。

Mechanical seal of cantalever centrifugal pumps in an aromatic complex in Jilin Petrochemical Company experienced frequent failures. The improvement was made in the design of seal through analysis of major failure forms and relative data. When the mechanical seal of improved design was applied in the pump, seal service life has been greatly extended （as long as 1 to 1. 5 years） and good results have been achieved.