Surge control in compressor

Details Surge control in compressor Surge control in compressor

1982-12-27

1985-01-15

Powell, Jr., Everette A.

Rotary kinetic fluid motors or pumps

With pump recirculation passage control responsive to...

415 1, 415 47, 415 17, 415 51, F04D 2702

Patent

active

044936087

ABSTRACT:
A steam generation system employing a flash tank feeding low-pressure steam to a compressor controls surges in the compressor by calculating the amount of steam generated based on the temperature change and flow of water passing through the flash tank and modulates the flow rate in order to maintain the steam flow above a surge limit. If increasing the water flow rate is incapable of producing enough steam to avoid surges, a recycle control recycles steam from the output of the compressor back to the flash tank. A further embodiment of the invention permits using an auxiliary source of low-pressure steam to augment the steam produced in the flash tank while maintaining the total steam flow at a level sufficient to avoid surges. The steam flow may alternatively be derived from the differential pressure between outlet and inlet of the compressor.

REFERENCES:
patent: Re30329 (1980-07-01), Rutshtein et al.
patent: 3292846 (1966-12-01), Harper et al.
patent: 3940058 (1976-02-01), Norris
patent: 4156578 (1979-05-01), Agar et al.
patent: 4203701 (1980-05-01), Abbey
patent: 4230437 (1980-10-01), Bellinger et al.
patent: 4265589 (1981-05-01), Watson et al.
patent: 4298310 (1981-11-01), Blotenberg
patent: 4363596 (1982-12-01), Watson et al.
patent: 4384818 (1983-05-01), Blotenberg

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