Method and apparatus for surge detection and control in centrifu

Details Method and apparatus for surge detection and control in centrifu Method and apparatus for surge detection and control in centrifu

1979-06-18

1981-05-05

Casaregola, Louis J.

Rotary kinetic fluid motors or pumps

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

Temperature or fluid force responsive member

415118, F01D 2112

Patent

active

042655897

ABSTRACT:
A centrifugal gas compressor having a shrouded rotatable impeller 14 in an impeller chamber 40, and provided with capacity control vanes 30 and a diffuser passage 18 throttle plate 38, is provided with surge control means including a thermistor 50 which senses a temperature rise beyond a predetermined value in the impeller chamber and exterior of the gas flow path through the impeller, and through relay means such as 52, 58 electrically connected to the thermistor 50 operates to change the compressor operation to a nonsurging condition.

REFERENCES:
patent: 2442049 (1948-05-01), Lee
patent: 2470565 (1949-05-01), Loss
patent: 2696345 (1954-12-01), Hopper
patent: 2970435 (1961-02-01), Winters et al.
patent: 2985107 (1961-05-01), Anderson
patent: 3006145 (1961-10-01), Sobey
patent: 3362624 (1968-01-01), Endress
patent: 3555844 (1971-01-01), Fleckenstein et al.

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