Pump modification for matching performance

Details Pump modification for matching performance Pump modification for matching performance

1976-06-21

1980-09-02

Crane, Daniel C.

Metal working

Means to assemble or disassemble

Puller or pusher means, contained force multiplying operator

291568R, 415DIG3, B23P 1300, B23P 1502

Patent

active

042199174

ABSTRACT:
The operating characteristics and the nominal, best operating point of a multi-stage centrifugal pump are shifted to lower flow rates without loss of nominal head and without substantial loss of efficiency by machining or otherwise shortening the trailing edge of all or some of the stationary guide vanes of the diffusers between impeller stages. By so doing, a single pump size can be adapted to a range of flow requirements, as desired. Thus, it is possible to reduce the number of pump sizes manufactured, and yet supply the needs of customers.

REFERENCES:
patent: 931636 (1909-08-01), Neumann
patent: 1127997 (1915-02-01), Jennings
patent: 1670065 (1928-05-01), Eisenwinter
patent: 2273420 (1942-02-01), Schott
patent: 2474077 (1949-06-01), Trumpler
patent: 2854926 (1958-10-01), Haight et al.
patent: 3543368 (1970-12-01), Marlow
patent: 3664001 (1972-05-01), Pilarczyk

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