Apparatus to achieve passive damping of flow disturbances in a c

Details Apparatus to achieve passive damping of flow disturbances in a c Apparatus to achieve passive damping of flow disturbances in a c

1995-05-30

1997-03-18

Look, Edward K.

Rotary kinetic fluid motors or pumps

Including working fluid force responsive vane or flow control

415147, 137514, 251 64, F04D 2700

Patent

active

056116640

ABSTRACT:
An apparatus achieves passive damping of flow disturbances to control centrifugal compressor surge. The apparatus includes a centrifugal compressor for compressing a low pressure fluid. The centrifugal compressor has an impeller, an inlet which communicates with an atmosphere and a discharge through which compressed air is supplied to a compressed air system. A fluid flow control is flow connected with the inlet for controlling the flow of a low pressure fluid to the compressor. A check valve is flow connected with the discharge for preventing high pressure fluid from back flowing to the compressor. A vane diffuser assembly fluidly communicates with the impeller. A spring-mass-damper system is coupled to any one or all of the fluid flow control, check valve or vane diffuser to dampen low amplitude flow disturbances of the compressible fluid.

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Dynamic Control of Centrifugal Compressor Surge Using Tailored Structures, by:D. Gysling, J. Dugundju, E. Greitzer and A. Epstein Transactions of the ASME 710/vol. 113, Oct. 1991.
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