Method of protecting a turbocompressor from surging by blowing o

Details Method of protecting a turbocompressor from surging by blowing o Method of protecting a turbocompressor from surging by blowing o

1989-03-09

1990-06-26

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 26, F04D 2702

Patent

active

049367404

ABSTRACT:
An arrangement for protecting a turbocompressor against surges by blowing off through a blow-off valve, in which at least the flow-through of the compressor and the compressor outlet pressure are measured. A regulating parameter is determined from the measured results, as well as from predetermined reference values. A blow-off valve is adjusted dependent on the regulating parameter, by a surge-limit regulator through activating device with a downstream state regulator and a compressed medium. The blow-off valve is shifted in opening direction at a maximum rate of adjustment by safety controls when the regulating parameter exceeds a safe threshold. The compressed medium that activates the blow-off valve bypasses the state regulator and escapes directly when the safety controls engage. The compressed medium is prevented from escaping, on the other hand, when the safety controls disengage, and regulation is resumed only by the surge-limit regulator and the downstream state regulator.

REFERENCES:
patent: 4139328 (1979-02-01), Kuper et al.
patent: 4781524 (1988-11-01), Blotenberg
patent: 4789298 (1988-12-01), Blotenberg
patent: 4796213 (1989-01-01), Blotenberg
patent: 4831534 (1989-05-01), Blotenberg
patent: 4831535 (1989-05-01), Blotenberg

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