近日，齐鲁石化炼油厂连续重整车间加氢裂化高速泵成功改用国产二级机械密封，改造后运行状况良好。

Recently, the CCR of Qilu Petrochemical refinery hydrocracking workshop successful switch to domestically produced high-speed secondary pump mechanical seals, modified to run in good condition.

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本文介绍了炼油厂机泵常用碳化钨动环过盈配合机械密封合理过盈值的计算方法及计算图表。

This article presents a method and monograms for calculating the rational interference values for fitting the tungsten carbide floating rings in mechanical seals.

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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。

Mechanical seal of cantalever centrifugal pumps in an aromatic complex in Jilin Petrochemical Company experienced frequent failures.

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