Preassembled unit or cartridge for multi-stage barrel type centr

Details Preassembled unit or cartridge for multi-stage barrel type centr Preassembled unit or cartridge for multi-stage barrel type centr

1976-08-23

1978-07-04

Freeh, William L.

Rotary kinetic fluid motors or pumps

Working fluid passage or distributing means associated with...

Plural rigidly related blade sets

415DIG3, F01D 106, F04D 106, F04D 2944

Patent

active

040985580

ABSTRACT:
A preassembled unit or inner cartridge for a multi-stage barrel type centrifugal pump including bearings, seals, balancing device, impellers and diffusers is aligned, balanced and pressed together into assembled position by a resilient means for stressing the parts against a pair of spaced handling clamps at opposite ends of the preassembled unit which permits the shaft to act as an elongated tie bolt to hold the preassembled unit or cartridge so that it can be installed or removed easily from the fixed outer casing of the multi-stage barrel type centrifugal pump.
The unit or cartridge is preassembled and aligned in a special supporting frame which duplicates the engagement shoulder and end face on the pump casing so that all adjustments can be made easily and precisely at a point away from the pump.
A movable fixture can also be provided and positioned so as to permit the aligned, adjusted and preassembled unit or cartridge to be installed, removed or reinstalled in the fixed outer casing for the multi-stage barrel type centrifugal pump.

REFERENCES:
patent: 3000543 (1961-09-01), Paul
patent: 3150820 (1964-09-01), Jekat et al.
patent: 3801217 (1974-04-01), Ryall et al.
patent: 3844675 (1974-10-01), Remberg
patent: 3927763 (1975-12-01), Strub et al.

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