通风口位置对蓄电池充电间氢气分布的影响

Influence of the Vent Positions on the Distribution of Hydrogen Concentration in the Charging Room of Lead-acid Battery

铅酸蓄电池在充电过程中会因为电解水副反应的存在而释放氢气,使得其充电间的火灾爆炸危险性大大增加。建立了在不同通风条件下铅酸蓄电池充电间内氢气扩散的数值计算模型,得到了不同通风条件下氢气的扩散特性和浓度分布规律。对比数值模拟结果,认为铅酸蓄电池充电间产生的氢气扩散后形成的危险区与通风口的位置相关。通过数值分析,得到了双通风系统条件下三种设计工况中通风效果最佳的通风口布置。该结果可为铅酸蓄电池充电间的通风设计提供参考。

During the charging process,the lead-acid battery will release hydrogen due to the water electrolysis side reaction,so that the risk of fire and explosion in the charging room is greatly increased.In this paper,the numerical simulation of hydrogen diffusion in the charging compartment of lead-acid batteries under different ventilation conditions is established,and the diffusion characteristics and concentration distribution of hydrogen under different ventilation conditions are obtained.Comparing the numerical simulation results,it is believed that the dangerous zone formed by the diffusion of hydrogen generated in the charging of the lead-acid battery is related to the position of the vent.Through numerical analysis,the venting arrangement with the best ventilation effect in the three design conditions under the double ventilation system is obtained,the results of which can provide reference for the ventilation design of the lead-acid battery charging room.