Numerical simulation study on nitrogen explosion suppression in limited space of hydrogen refueling station
A nitrogen explosion suppression method under hydrogen leakage in a limited space of a hydrogen refueling station is proposed,and a numerical model of hydrogen leakage is established to simulate the hydrogen leakage state in a limited space;Simulate and study nitrogen nozzles with different injection angles to find suitable injection angles;A nitrogen explosion suppression device was designed,and simulation was conducted under two conditions:natural diffusion of hydrogen and activation of the nitrogen explosion suppression device after hydrogen leakage.A full-scale test platform was built for on-site verification.The experimental results show that the intervention of nitrogen explosion suppression system can accelerate the reduction rate of hydrogen concentration in a confined space by more than 50%,effectively shortening the duration of hydrogen concentration alarm in the space.The research results can provide some reference for the intrinsic safety protection of hydrogen refueling stations.
hydrogen refueling stationhydrogen gas leakagenitrogen explosion suppressionnumerical simulation
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