To provide a fire sensing system for a railway carriage with improved sensing accuracy, the system sensing a fire in heat-generating devices installed in a box body mounted on the railway carriage. In a state that a storage battery 14 causes a fire, due to the fire in the storage battery 14, an auxiliary feeder circuit 22 arranged parallel to a primary feeder circuit 20 is electrified (indicated by a bold line). Specifically, the coating layer of a short-circuit induction wiring 26 in the auxiliary feeder circuit 22 is melted by heat, so that a pair of parallel lead wires 26a, 26b are short-circuited so as to electrify the auxiliary feeder circuit 22. Upon the electrification of the auxiliary feeder circuit 22, in a switch part 24, a primary normally opened contact 28 and an auxiliary normally opened contact 30 are to be switched to a circuit break position by a first circuit breaker 32 arranged in series with the auxiliary feeder circuit 22. As a result, the primary feeder circuit 20 and the auxiliary feeder circuit 22 are both turned off. Upon the deactivation of the primary feeder circuit 20 as a trigger, a fire alarm circuit 34 of a fire alarm portion 18 is electrified so as to activate the fire alarm portion 18.


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    Title :

    FIRE SENSING SYSTEM FOR RAILWAY CARRIAGE


    Additional title:

    BRANDMELDESYSTEM FÜR EISENBAHNWAGEN
    SYSTÈME DE DÉTECTION D'INCENDIE POUR VÉHICULE FERROVIAIRE


    Contributors:

    Publication date :

    2021-08-11


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    English


    Classification :

    IPC:    G08B SIGNALLING OR CALLING SYSTEMS , Signalisier- oder Rufsysteme / B61D Einzelheiten oder Arten des Wagenaufbaus von Eisenbahnfahrzeugen , BODY DETAILS OR KINDS OF RAILWAY VEHICLES / B61L Leiten des Eisenbahnverkehrs , GUIDING RAILWAY TRAFFIC / H01M Verfahren oder Mittel, z.B. Batterien, für die direkte Umwandlung von chemischer in elektrische Energie , PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY



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