Surge recurrence prevention control system for dynamic compresso

Details Surge recurrence prevention control system for dynamic compresso Surge recurrence prevention control system for dynamic compresso

1996-01-02

1998-01-20

Verdier, Christopher

Rotary kinetic fluid motors or pumps

Method of operation

415 11, 415 17, 415 27, 36443102, F04D 2702

Patent

active

057095264

ABSTRACT:
A control system prevents recurrence of surge in a dynamic compressor. An anti-surge valve bypasses flow and is operated by the control system between a low limit and a full open position. The low limit is initially established to be zero, or a fully closed anti-surge valve. In the event of a compressor surge, the system detects a position of the anti-surge valve at the onset of surge, and stores a position related to the detected position as a new low limit. The stored position is preferably the detected position plus a small increment in order to prevent recurrence of the surge event.

REFERENCES:
patent: 4142838 (1979-03-01), Staroselsky
patent: 4486142 (1984-12-01), Staroselsky
patent: 4697980 (1987-10-01), Keyes, IV et al.
patent: 4831534 (1989-05-01), Blotenberg
patent: 4949276 (1990-08-01), Staroselsky et al.
patent: 5306116 (1994-04-01), Gunn et al.
P.p. 1 and 13-16 of"Compressor Antisurge Control" manual of Tri-Sen Co., Sep. 1993.
Excerpts from "Anti-Surge Control" manual of Dresser-Rand Control Systems. (no date).
"How to Cope with the High Speed of Approaching Surge", P. 5, Turbomachinery Maintenance, Jul., 1988.
"Basic TurboCompressor Control and Protection", Turbomachinery International, Jul./Aug. 1995.
"Benefits of the Series 3 Control System" from Series 3 Antisurge Controller Manual No. IM31 of Woodward Governor Co. (no date).
"Compressor Surge Prevention" by Larry McLeister in Turbonmachinery Control Conference, Aug. 7 to Aug. 10, 1995.

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