Surge control and recovery for a centrifugal compressor

Details Surge control and recovery for a centrifugal compressor Surge control and recovery for a centrifugal compressor

1993-03-10

1994-04-26

Look, Edward K.

Rotary kinetic fluid motors or pumps

With control means responsive to non-cyclic condition...

Responsive to moving member developed fluid force, current...

415 17, 36443102, F04D 2702

Patent

active

053061160

ABSTRACT:
A method and apparatus for controlling working fluid surge in a centrifugal compressor include preventing surge by using a variable-speed prime-mover to achieve a minimum desired surge margin. Surge prevention is also accomplished by continuously modulating a blowoff valve to maintain an actual compressor pressure ratio at a predetermined target maximum value. Surge detection is accomplished by monitoring the time rate of change of the final stage discharge pressure.

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