Rotating stall prevention system for compressor

Details Rotating stall prevention system for compressor Rotating stall prevention system for compressor

1995-06-30

1996-12-24

Look, Edward K.

Rotary kinetic fluid motors or pumps

With control means responsive to non-cyclic condition...

Responsive to working fluid discharge angle from blade or vane

415 13, 415 17, F01D 1700

Patent

active

055868576

ABSTRACT:
A compressor has inlet guide vanes, rotor blades and stator blades. To prevent rotating stall, baffle vanes 5 capable of having their angles varied are installed upstream of the inlet guide vanes, actuators to vary the angles of baffle vanes are coupled to the baffle vanes, sensors installed upstream of the baffle vanes detect a rotating stall condition inside the flow passage of the compressor, and a control unit is responsive to signals from the sensors to output control signals to the actuators to vary the angles of the baffle vanes so as to prevent the rotating stall condition. Instead of the baffle vanes, fluid jets may be provided upstream of the inlet guide vanes for the same purposes.

REFERENCES:
patent: 2950857 (1960-08-01), Williams et al.
patent: 3156437 (1964-11-01), Mercier
patent: 3327933 (1967-06-01), Baumann et al.
patent: 3367565 (1968-02-01), Urban
patent: 3677000 (1972-07-01), Thomson
patent: 4205941 (1980-06-01), Fradin
patent: 5165844 (1992-11-01), Khalid
patent: 5346359 (1994-09-01), Propst
Active Control of Rotating Stall in a Low Speed Axial Compressor by J. Paduano, et al.-The American Society of Mechanical Engineers, 1991; pp. 1-10.
Patent Abstract of JP 58-202399 published Feb. 3, 1984, vol. 8, No. 47 (M-280) [1484] Mar. 2, 1984.

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