System and methods for controlling rotary screw compressors

Details System and methods for controlling rotary screw compressors System and methods for controlling rotary screw compressors

1994-11-23

1998-02-03

Thorpe, Timothy

Pumps

Processes

417279, 4182012, F04B 4922

Patent

active

057137242

ABSTRACT:
An electronic control system dynamically varies the output capacity of a compressor by controlling plural valves associated with the compressor to provide pressurized air to a distribution system at an appropriate rate. The control system operates in any of three modes for standalone operation, including continuous run, auto/dual pressure band, and target pressure modes. In the first two modes, pressure bands are dynamically calculated based on load and unload values entered by an operator. These electronic control systems can also be connected in a peer-to-peer network to coordinate control of up to 16 compressors feeding the same distribution system, so as to maintain a desired target pressure in the system. A modem connected to the system supports remote diagnostics, monitoring, and control. Specialized startup, operating, and shutdown diagnostic algorithms prevent damage to the compressor and avert unsafe operating conditions.

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