Surge control for centrifugal compressors

Details Surge control for centrifugal compressors Surge control for centrifugal compressors

1978-08-22

1980-05-20

Powell, Jr., Everette A.

Rotary kinetic fluid motors or pumps

Method of operation

415 11, F04D 2702

Patent

active

042037018

ABSTRACT:
A surge control system for a centrifugal compressor having a recycle line between the discharge and suction, modulates flow in the line in accordance with molecular weight and temperature of the gas being compressed, pressure drop across the inlet orifice, and pressure drop across and power input to the compressor. The system is based on the standard relation that the product of the gas constant times the pressure drop across the inlet orifice divided by the suction temperature equals the pressure drop across the compressor.

REFERENCES:
patent: 3292845 (1966-12-01), Hens et al.
patent: 3292846 (1966-12-01), Harper et al.
patent: 3876326 (1975-04-01), Weitz
patent: 4139328 (1979-02-01), Kuper
patent: 4156578 (1979-05-01), Agar et al.

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