发明申请
- 专利标题: MULTISTAGE HIGH-PRESSURE PUMP
- 专利标题(中): 多级高压泵
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申请号: US12523773申请日: 2008-01-21
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公开(公告)号: US20100080686A1公开(公告)日: 2010-04-01
- 发明人: Akio Teragaki
- 申请人: Akio Teragaki
- 申请人地址: JP Tokyo
- 专利权人: EBARA CORPORATION
- 当前专利权人: EBARA CORPORATION
- 当前专利权人地址: JP Tokyo
- 优先权: JP2007-011315 20070122
- 国际申请: PCT/JP2008/051133 WO 20080121
- 主分类号: F04D29/12
- IPC分类号: F04D29/12 ; F04D1/06 ; F16J15/34
摘要:
A multistage high-pressure pump according to the present invention includes a rotational shaft (1), impellers (3) secured to the rotational shaft, a casing (2) configured to house the impellers therein, a mechanical seal (20), a seal chamber (25) that houses the mechanical seal therein, an oil reservoir (30) configured to store oil therein, an oil supply line (26) providing fluid communication between the oil reservoir (30) and the seal chamber (25), an oil pump (31) configured to pressurize the oil from the oil reservoir (30) and supply the oil to the seal chamber (25), a pressure retaining mechanism (32, 34, 35) configured to retain pressure of the oil in the seal chamber (25), and an oil outlet line (27) for discharging the oil from the seal chamber (25). The pressure of the oil in the seal chamber (25) is higher than pressure of the fluid.
公开/授权文献
- US08540478B2 Multistage high-pressure pump 公开/授权日:2013-09-24
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