Rotary kinetic fluid motors or pumps – With control means responsive to non-cyclic condition... – Responsive to moving member developed fluid force – current...
Patent
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
Fogiel Max
Kwon John T.
Look Edward K.
MAN Gutehoffnungshutte GmbH
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