AUTOMATIC CONTROL SYSTEM FOR FIXED FIRE-EXTINGUISHING PLANT WITH PRESSURE MAINTAINING UNITS USED IN SMALL SHIP Russian patent published in 2005 - IPC

FIELD: fire-fighting, particularly control systems for fire-fighting equipment.

SUBSTANCE: system is provided with signaling unit and signal-forming unit including the first and the second AND elements. Direct outlet of OR element is linked to direct inputs of AND elements, wherein OR element is connected directly to one AND element and is connected to another AND element by time-delay element. OR element is used for main fire-extinguishing plant triggering. Linked to the second, inverting input of the second AND element is output of working fire pipeline condition indicator. Output of the second AND element is connected to the second, inverting, input of the first AND element. Outputs of the first and the second AND elements are linked to OR inputs in signal-forming unit, wherein output of the first AND element is directly connected thereto, output of the second AND element is linked through signal modulation means. Signal-forming unit also comprises two memory elements. The first memory element is connected to output of the second element by recording input and to sound alarm by output thereof. The first memory element is connected to output of the second memory element by clear input. Recording input of the second memory element is linked to command acknowledgement means. Clear input thereof is connected to command memory cleaning means. Signaling unit comprises light signal indicating working condition of fire pipeline and connected to working fire pipeline condition indicator; light signals indicating actuation of executive fire-extinguishing plant devices connected to command performance indicators. Signaling unit also includes light signal indicating actuation of the main fire-extinguishing plant and linked to output of OR element of signal-forming unit; light signal indicating actuation of standby fire-extinguishing plant connected to output of memory element controlling standby fire-extinguishing plant. Linked to recording inputs of above memory element are OR element and AND element seriously connected one to another. Linked to direct inputs of said AND element are input of disjunction means and command circuit for triggering standby fire-extinguishing plant. Connected to inverting input of said AND element is working fire pipeline condition indicator. Signaling unit has light signal indicating connection of standby fire-extinguishing plant to fire pipeline and linked to AND member output of signaling unit to direct inputs of which command signal for standby fire-extinguishing plant actuation and signal indicating standby fire-extinguishing plant actuation and working fire pipeline condition indicator are linked. Connected to inverting input thereof is signal indicating actuation of the main fire-extinguishing plant.

EFFECT: increased reliability and self-descriptiveness.

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