发明名称 |
Submersible motor pump, motor pump, and tandem mechanical seal |
摘要 |
A submersible motor pump includes a water jacket having a circulation passage of a coolant, a centrifugal impeller for circulating the coolant, a suction passage configured to provide fluid communication between the circulation passage and a fluid inlet of the centrifugal impeller, and a discharge passage configured to provide fluid communication between a fluid outlet of the centrifugal impeller and the circulation passage. The discharge passage includes a heat-exchange passage formed by two wall surfaces, one of which is constituted by a member which contacts a liquid conveyed by a main impeller. The heat-exchange passage has a circular shape extending radially outwardly from the fluid outlet of the centrifugal impeller. The heat-exchange passage includes at least one axial passage section having a length component in an axial direction of the rotational shaft.
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申请公布号 |
US8491277(B2) |
申请公布日期 |
2013.07.23 |
申请号 |
US20100859915 |
申请日期 |
2010.08.20 |
申请人 |
KAWABATA JUNYA;MAKINO CHIKARA;AIYOSHIZAWA SHUNICHI;EBARA CORPORATION |
发明人 |
KAWABATA JUNYA;MAKINO CHIKARA;AIYOSHIZAWA SHUNICHI |
分类号 |
F04B39/06;H02K5/12;H02K9/00 |
主分类号 |
F04B39/06 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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