Pumps – Condition responsive control of pump drive motor – With condition responsive control of pump fluid valve
Patent
1975-12-01
1977-09-06
Croyle, Carlton R.
Pumps
Condition responsive control of pump drive motor
With condition responsive control of pump fluid valve
417 47, 415 1, 415 11, 415 17, 415 27, F04B 4900, F03B 1500
Patent
active
040464903
ABSTRACT:
A method and apparatus for protecting a dynamic compressor from surge. The method includes a first step for providing a simultaneous control of a smaller relief means and a main control member of a dynamic compressor or the driver thereof for changing the performance of the compressor. This combined action provides for the protection from surge and at the same time insures the invariability of the main control parameters of pressure, mass flow rate to the user, or the speed of rotation. The second step provides for controlling a larger relief means and provides for antisurge protection in those cases when the first step is not sufficient to protect the compressor from surge. Apparatus is also provided for automatically implementing the method.
REFERENCES:
patent: 3009631 (1961-11-01), Dimrock
patent: 3362626 (1968-01-01), Schlirf
patent: 3473727 (1969-10-01), Eastman
patent: 3574474 (1971-04-01), Lukacs
patent: 3737252 (1973-06-01), Pilarczyk et al.
patent: 3876326 (1975-04-01), Weitz
Rutshtein A1exander
Staroselsky Naum
Compressor Controls Corporation
Croyle Carlton R.
LaPointe Gregory P.
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