Pump isolation valve

Details Pump isolation valve Pump isolation valve

1980-12-24

1983-08-02

Freeh, William L.

Rotary kinetic fluid motors or pumps

Selectively adjustable vane or working fluid control means

Runner, shaft, or separate motor operated

F03B 318, F03B 300

Patent

active

043963501

ABSTRACT:
The pump isolation valve provides a means by which the pump may be selectively isolated from the remainder of the coolant system while being compatible with the internal hydraulic arrangement of the pump during normal operation of the pump. The valve comprises a valve cylinder disposed around the pump and adjacent to the last pump diffuser with a turning vane attached to the lower end of the valve cylinder in a manner so as to hydraulically match with the discharge diffuser. The valve cylinder is connected to a drive means for sliding the valve cylinder relative to the diffuser support cylinder so as to block flow in either direction through the discharge diffuser when the valve is in the closed position and to aid in the flow of the coolant from the discharge diffuser by means of the turning vane when the valve is in the open position.

REFERENCES:
patent: 3404631 (1968-10-01), Nixon
patent: 3433145 (1969-03-01), Daly et al.
patent: 4036561 (1977-07-01), Harand et al.
patent: 4188173 (1980-02-01), Lindsay
patent: 4224363 (1980-09-01), Vernonesi et al.
patent: 4298088 (1981-11-01), Keller
patent: 4302296 (1981-11-01), Sharbaugh et al.

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