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发明授权
CN101589236B 多级高压泵 有权

多级高压泵
摘要：
本发明提供一种多级高压泵，具有：旋转轴(1)，固定在旋转轴上的多个叶轮(3)，收容多个叶轮的壳体(2)，机械密封(20)，收容机械密封(20)的密封室(25)，储存油的油存储部(30)，使油存储部(30)和密封室(25)连通的供油管道(26)，将油存储部(30)内的油加压并提供给密封室(25)的油泵(31)，保持密封室(25)内的油的压力的压力保持机构(32、34、35)，以及，从密封室(25)排出油的排油管道(27)。密封室(25)内的油的压力设定为比流体的压力高。
摘要（英）：

A multi-stage high-pressure pump having a rotating shaft (1), impellers (3) fixed to the rotating shaft, a casing (2) for receiving the impellers, a mechanical seal (20), a seal chamber (25) for receiving the mechanical seal (20), an oil containing section (30) for containing oil, an oil supply line (26) for interconnecting the oil containing section (30) and the seal chamber (25), an oil pump (31) for pressurizing oil in the oil containing section (30) and supplying the pressurized oil to the seal chamber (25), pressure retention mechanisms (32, 34, 35) for retaining the pressure of oil in the seal chamber (25), and an oil discharge line (27) for discharging the oil from the seal chamber (25). The pressure of the oil in the seal chamber (25) is set higher than the pressure of fluid.

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