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对防爆柴油机阻火器的相关标准、最大安全间隙和使用现状进行了阐述,并对典型的栅栏板式阻火器结构进行分析,采用压力损失理论建立气体输运数学模型,设计防爆格栅压力损失模型,同时利用Fluent进行数值模拟,以防爆格栅前、后连接管中的平均压差为标准,模拟了平板间隙对防爆格栅压力损失的影响,从防爆格栅内部速度矢量和湍动能云图进行分析。在此基础上分别相邻两栅栏板间隙分别为0.7、0.8、0.9、1.0、1.1、1.2 mm的阻火器进行了隔爆性能试验研究,得出了防爆柴油机阻火器特定条件的最大安全间隙。
The relevant standards, the maximum safety clearance and the current situation of flame arrester for explosion-proof diesel engine are expounded. The structure of a typical fender flame arrester is analyzed. The mathematical model of gas transport is established by pressure loss theory, the pressure loss model of explosion grille is designed, At the same time, the numerical simulation with Fluent was carried out. The average pressure drop in the front and rear connecting pipes of the blasting grille was taken as the standard to simulate the influence of the slab clearance on the pressure loss of the blasting grille. The internal velocity vector and turbulent kinetic energy cloud image . On the basis of this, the flameproof performance of flame arresters with clearances of 0.7,0.8,0.9,1.0,1.1,1.2 mm respectively adjacent to the two fence plates were tested and the maximum safety clearance of flame arrester for explosion-proof diesel engine was obtained.