发明名称 |
High performance centrifugal pump having an open-faced impeller |
摘要 |
The centrifugal pump with an open-faced impeller comprises at least one open-faced impeller having blades placed inside a casing defining both a delivery pipe and a suction pipe facing the base of the blades situated in the vicinity of a central shaft for driving the impeller. An active axial balancing system for the rotary assembly is integrated in the impeller and comprises a balancing chamber interposed between the rear face of the body of the impeller and an outer rear portion of the casing, the impeller itself acting as the balancing turntable. A shroud-forming intermediate part is prevented from rotating relative to the casing and is interposed between an outer front portion of the casing and the impeller, a cavity is formed between the outer front portion of the casing and the intermediate part to receive a back pressure of predetermined value serving, in operation, to maintain small clearance without contact between the intermediate part that is prevented from rotating and the blades of the impeller.
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申请公布号 |
US5427498(A) |
申请公布日期 |
1995.06.27 |
申请号 |
US19930157746 |
申请日期 |
1993.11.24 |
申请人 |
SOCIETE EUROPEENNE DE PROPULSION |
发明人 |
LEHE, JEAN-ROBERT;BEAURAIN, ANDRE;BOSSON, RENE;TIRET, ETIENNE |
分类号 |
F04D29/04;F04D29/16;F04D29/22;(IPC1-7):F04D29/40 |
主分类号 |
F04D29/04 |
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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