Research on the Attenuation Effect of Isolation Walls on Overpressure from Hydrogen Explosion

Due to the inherent flammability and explosive potential of hydrogen, hydrogen-related scenarios are susceptible to leakage and explosion hazards. To assess the consequences of explosion accidents in such environments, this study performed hydrogen leakage and explosion experiments within an enclosed space, examining the destructive effects of blast shock waves on surrounding structures. Experimental results demonstrate that ignition triggered an explosion when the hydrogen concentration in the enclosed space reached 12%. by volume. Under these conditions, the peak overpressures recorded at the top of isolation walls positioned at 5 m, 10 m, and 15 m were 10.8 kPa, 2.8 kPa, and 1.6 kPa, respectively, while those at the center measured 7.5 kPa, 1.2 kPa, and 0.1 kPa, respectively. These study demonstrated that the installation of isolation walls effectively attenuates shock wave overpressure and mitigates blast hazards from hydrogen explosions, thereby offering a foundational basis for the design of safety protection in hydrogen-related scenarios.