High-pressure multistage pump

Details High-pressure multistage pump High-pressure multistage pump

1996-09-24

1998-12-08

Kwon, John T.

Rotary kinetic fluid motors or pumps

Working fluid passage or distributing means associated with...

F04D 2942

Patent

active

058460527

ABSTRACT:
A high-pressure multistage pump is used for supplying liquid to facilities such as boilers under a high discharge pressure. The high-pressure multistage pump has a barrel-shaped outer casing, an inner casing housed in the barrel-shaped outer casing, a cover sealingly closing an axial end of the outer casing, a pump shaft rotatably supported in the inner casing and the cover, and an array of impellers mounted on the pump shaft. One of the impellers has a suction chamber positioned most closely to the cover and held in communication with an inner space which is jointly defined by the outer casing, the inner casing and the cover.

REFERENCES:
patent: 2058017 (1936-10-01), Hollander
patent: 2678606 (1954-05-01), Watson
patent: 3801217 (1974-04-01), Ryall et al.
patent: 3861825 (1975-01-01), Blom
patent: 4715778 (1987-12-01), Katayama et al.
patent: 5452987 (1995-09-01), Bleger et al.
Nobuyasu Yokoi et al.; "Development of Advanced Type Boiler Feedwater Pump"; The Hitachi Hyoron; vol. 62, No. 6; pp. 63-65; 1980.
Dr. Dusan Florjancic et al.; "Injection Pumps: State of the Art and Development Trends"; Sulzer Technical Review; Feb. 1989; pp. 19-26.

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