Compressor surge control method

Details Compressor surge control method Compressor surge control method

1989-03-16

1990-02-13

Casaregola, Louis J.

Pumps

Processes

417201, F04B 2702

Patent

active

049002325

ABSTRACT:
A surge control system (16) is provided for a compressor (14) which anticipates the actual surge condition and initiates anti-surge protection in proportion to the magnitude of the anticipated surge condition. This is done by providing a feed forward signal (20) to a summing station (48) along with a normally generated surge control line point (44) to offset this point (44) by an amount determined by the feed forward signal (20). This offset point (50) is used as an input to a controller for controlling the bypass valve (28) in a bypass loop (30) around the compressor (14).

REFERENCES:
patent: 4139328 (1979-02-01), Kuper et al.
patent: 4203701 (1980-05-01), Abbey
patent: 4380893 (1983-04-01), Stokes et al.
patent: 4464720 (1984-08-01), Agarwal
patent: 4627788 (1986-12-01), Keyes et al.
Staroselsky et al., "Improved Surge Control For Centrifugal Compressors"; Chemical Engineering; May, 1979.

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