System and method for stability control in a centrifugal compressor

A stability control algorithm is provided for a centrifugal compressor (108). The stability control algorithm is used to control a variable geometry diffuser (119) and a hot gas bypass valve (134) (when provided) in response to the detection of compressor instabilities. The stability control algorit...

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Bibliographische Detailangaben
Hauptverfasser:	BODELL MARK ROBINSON II, STABLEY ROBERT EDWARD, MILLER WANDA JEAN
Format:	Patent
Sprache:	chi ; eng
Schlagworte:	BLASTING COMBINED HEATING AND REFRIGERATION SYSTEMS HEAT PUMP SYSTEMS HEATING INDEXING SCHEME FOR ASPECTS RELATING TONON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES ORJET-PROPULSION PLANTS INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUSSUBCLASSES OF CLASSES F01-F04 LIGHTING LIQUEFACTION SOLIDIFICATION OF GASES MANUFACTURE OR STORAGE OF ICE MECHANICAL ENGINEERING NON-POSITIVE DISPLACEMENT PUMPS POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC FLUIDS REFRIGERATION MACHINES, PLANTS OR SYSTEMS REFRIGERATION OR COOLING WEAPONS
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Beschreibung
Zusammenfassung:	A stability control algorithm is provided for a centrifugal compressor (108). The stability control algorithm is used to control a variable geometry diffuser (119) and a hot gas bypass valve (134) (when provided) in response to the detection of compressor instabilities. The stability control algorithm can adjust the position of a diffuser ring (210) in the variable geometry diffuser (119) in response to the detection of a surge condition or a stall condition. In addition, the diffuser ring (210) in the variable geometry diffuser (119) can be adjusted to determine an optimal position of the diffuser ring (210). The stability control algorithm can also be used to open a hot gas bypass valve (134) in response to the detection of continued surge conditions.