FIRE- AND EXPLOSION-PROOF CURRENT COLLECTOR OF TROLLEY SYSTEM FOR VEHICLES POWER SUPPLY Russian patent published in 2014 - IPC A62C2/00 B60L5/00 

FIELD: electricity.

SUBSTANCE: invention is related to the area of fire- and explosion-proof arrangements for vehicles equipped with power supply trolley systems and intended for movement of vehicles filled by combustible and oxidizing components of rocket fuels, etc. The current collector is a potential source of fire development as far as electric discharges are generated permanently between trolleys during its usage. Fire- and explosion-proof protection of current collector for the trolley system is arranged by the following engineering measures. Current-carrying trolleys are placed in grooves of non-flammable or fire-retardant material in conditions of potential emergency emission into the environment of vapours of combustible or oxidizing substances. To the conditionally closed space of the protective enclosure for a current-collecting carriage a line is entered to feed inert gas to the closed space of the protective enclosure. The device includes a unit delaying power supply to current-carrying trolleys for the period till inert gas is fed to the protective enclosure of the current-collecting carriage before the vehicle start-up.

EFFECT: provision of the protective enclosure for a current-collecting device for the whole period of current-carrying trolleys staying under voltage.

5 dwg