Title:
MULTI-STAGE DIFFUSER PUMP
Document Type and Number:
Japanese Patent JP2009156097
Kind Code:
A
Abstract:
To reduce vibration noises of an entire pump by reducing vibrations noises to a discharging nozzle in a multi-stage diffuser pump.
This multi-stage diffuser pump comprises a multi-stage impeller 5 mounted to a rotary shaft 6, a guide vane 4, a return vane 2, an inner casing 3 covering them, and an outer casing 1 mounted on an outer circumferential side of the inner casing 3 and having an intake nozzle 8 and a discharging nozzle 7. The discharging nozzle 7 is mounted to the outer casing 1 in its axial direction on an upstream of an impeller 5a, a guide vane 4a, and a return vane 2a at the final stage, and mounted in a direction lateral to a circumferential direction.
Inventors:
WATABE MASANORI
SHIMIZU ISATO
CHIBA YOSHIMASA
YOSHIDA TETSUYA
TANAKA TEIJI
SHIMIZU ISATO
CHIBA YOSHIMASA
YOSHIDA TETSUYA
TANAKA TEIJI
Application Number:
JP2007332942A
Publication Date:
July 16, 2009
Filing Date:
December 25, 2007
Export Citation:
Assignee:
HITACHI PLANT TECHNOLOGIES LTD
International Classes:
F04D1/08; F04D29/44; F04D29/66
Attorney, Agent or Firm:
Yusuke Hiraki
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