Pump isolation valve

Patent · 02 August 1983

OSTI ID:864642

Kinney, Calvin L ^[1]; Wetherill, Todd M ^[2]

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1. Penn Hills, PA
2. Lower Burrell, PA

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.

• Assignee: Kinney; Calvin L. (Penn Hills, PA); Wetherill; Todd M. (Lower Burrell, PA)
• Patent Number(s): US 4396350
• Application Number: 06/219,719
• OSTI ID: 864642
• Country of Publication: United States
• Language: English

Related Subjects

/415/376/976/
adjacent
arrangement
attached
block
block flow
closed
closed position
compatible
comprises
connected
coolant
cylinder
diffuser
direction
discharge
disposed
drive
drive means
flow
hydraulic
hydraulically
internal
isolated
isolation
isolation valve
manner
match
means
normal
normal operation
operation
position
provides
pump
pump diffuser
pump isolation
relative
remainder
selectively
sliding
support
valve
valve comprises
valve cylinder
valve provides
vane