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一、前言输油站8#输油泵机组已运行6万7千多小时,大修时发现泵两端密封腔安装的卸压套内径已被冲刷磨损成喇叭口状,驱动端与非驱动端卸压套内径正常值Φ91mm,磨损后驱动端卸压套内径Φ94mm,增大3mm,非驱动端卸压套内径Φ94.5mm,增大3.5mm。与卸压套部位对应的轴正常值是Φ89mm,磨损后驱动端轴径Φ88.5 mm,减小0.5mm。非驱动
I. Introduction Oil pump 8 # transmission unit has been running more than 67,000 hours overhaul found that the seal chamber at both ends of the pump installed pressure relief sleeve diameter has been scoured and worn into a bell-shaped mouth, driven end and non-driven end discharge Pressure sleeve diameter normal Φ91mm, wear-resistant drive pressure relief sleeve diameter Φ94mm, an increase of 3mm, non-driven end pressure relief sleeve diameter Φ94.5mm, an increase of 3.5mm. The normal value of the shaft corresponding to the part of the pressure relief sleeve is Φ89mm, and the shaft diameter of the driven end is Φ88.5 mm after the wear, decreasing by 0.5mm. Non-driven