The utility model relates to the technical field of
alcohol hydrogen leakage detection of a filling
station, in particular to a leakage detection device of an
alcohol hydrogen filling
station. The
alcohol hydrogen filling
station leakage detection device comprises a
hydrogen storage tank, the
hydrogen storage tank is provided with a
butt joint pipe used for the
hydrogen storage tank to store or
discharge alcohol hydrogen, and the top of the hydrogen
storage tank is fixedly provided with a protective cover used for covering the
butt joint pipe; a detection cylinder is installed on the top of the protective cover, and a monitoring
assembly is arranged in the detection cylinder. According to the leakage detection device for the alcohol hydrogen filling station, the monitoring
assembly is combined with the
piston driven by air pressure and the contact piece type switch, the audible and visual alarm is triggered through the abutting column, the sensitivity is high, the anti-interference capacity is high, meanwhile, the spring and the limiting ring act synergistically, it is ensured that the
piston is reset in the non-leakage state, and the leakage detection efficiency is improved. Meanwhile, the pressure relief hole can balance the
internal pressure of the detection cylinder, the stability of the
system is improved, leaked alcohol
hydrogen fuel can be directionally conveyed to a standby
storage tank through the design of the dump
pipe and the control valve, and fuel
diffusion and secondary
pollution are avoided.