Electric switch gauge for screw compressors

Details Electric switch gauge for screw compressors Electric switch gauge for screw compressors

1998-01-21

2000-10-31

Denion, Thomas

Pumps

Condition responsive control of pump drive motor

With condition responsive control of pump fluid valve

4182012, 417310, 417280, 184 64, 184 616, 184 611, 184 61, F04B 4900

Patent

active

061392804

ABSTRACT:
A control apparatus, for measuring pressure in relation to a rotary screw compressor with capacity control means and a prime mover, including a pressure sensor to monitor the prime mover manifold pressure, and a series of relays which when tripped by the pressure sensor will engage a pressure mechanism to engage the capacity control means on the compressor. The pressure mechanism may be a hydraulic or a pneumatic pressure mechanism and the apparatus may further include a second pressure sensor to monitor the inlet gas pressure to the compressor and a third pressure sensor to monitor discharge pressure of the gas compressor.

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