| 摘要 |
Control apparatus for controlling the operation of a compressor station comprising at least two compressor plants connected to operate in parallel, includes means providing "raise" and "lower" signals responsive to the discharge pressure of the station being lower or higher respectively than a desired discharge pressure, control means providing for each compressor plant a control signal that is responsive to the differences between the actual and desired flows of the compressor plant, control means for each compressor plant that control the plant to raise or lower the discharge pressure of the station, means that supply the "raise" or "lower" signals to the control means, and means responsive to the control signals for gating the supplying means on and off to permit or block delivery of "raise" and "lower" signals to the control means.
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