Compressor surge control system

Details Compressor surge control system Compressor surge control system

1988-05-11

1989-08-29

Casaregola, Louis J.

Pumps

Diverse pumps

Including rotary nonexpansible chamber type

417282, 415 27, F04B 2702

Patent

active

048612332

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 foward 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"; in Chemical Engineering, May, 1979.

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