煤矿风井防爆门动态响应特性及结构优化分析

Dynamic Response Characteristics and Structure Optimization Analysis of Explosion-proof Door in Air Shaft of Coal Mine

煤矿风井防爆门是保护煤矿主通风机安全的重要设备,但目前中国的煤矿风井防爆门存在严重的缺陷和安全隐患,影响了煤矿的安全生产及人员安全。针对煤矿风井防爆门在爆炸压力冲击波作用下容易变形的问题,设计了双开式防爆门,利用FLUENT软件对瓦斯爆炸流场进行数值模拟,分析防爆门在瓦斯爆炸冲击波作用下的安全可靠性,获得了不同时刻防爆门上的压力分布及其动态响应规律,并将不同时刻压力载荷导入ANSYS受力分析软件,进而对防爆门进行动态非线性压力作用下的应力及变形计算,得到了防爆门应力分布,在此基础上进行了结构优化,材料强度校核结果显示优化效果较好。

Coal mine air shaft explosion-proof door is an important equipment to protect the safety of coal mine main ventilator. However,at present,there are serious defects and potential safety hazards in coal mine air shaft explosion-proof door in China,which affect the safety of coal mine production and personnel safety. In order to solve the problem that the explosion-proof door of air shaft in coal mine is easy to deform under the shock wave of explosion pressure,a double opening explosion-proof door was designed. The flow field of gas explosion was simulated by FLUENT software,the safety and reliability of explosion-proof door under the shock wave of gas explosion was analyzed,the pressure distribution and dynamic response law of explosion-proof door at different times were obtained,and the pressure at different times was loaded. The load was imported into ANSYS stress analysis software,and then the stress and deformation of the explosion-proof door were calculated under the dynamic non-linear pressure,and the stress distribution of the explosion-proof door was obtained. On this basis,the structure was optimized,and the material strength check results show that the optimization effect was good.