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.
FIRE SENSING SYSTEM FOR RAILWAY CARRIAGE
BRANDMELDESYSTEM FÜR EISENBAHNWAGEN
SYSTÈME DE DÉTECTION D'INCENDIE POUR VÉHICULE FERROVIAIRE
2021-08-11
Patent
Elektronische Ressource
Englisch
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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