doi:10.16186/j.cnki.1673-9787.2020100003

Received:2020/10/05

Revised:2021/01/22

Published:2022/07/15

Study on stress distribution and dynamic response characteristics of explosion-proof door under the action of gas explosion impact

MA Shangzhen1, WEN Xiaoping2

1.Shaanxi Fuyuan Coal Industry Co.，Ltd.，Hebi Coal Company of Henan Energy and Chemical Industry Group，Yanan，727502，Shaanxi China;2.School of Mechanical and Power Engineering， Henan Polytechnic University，Jiaozuo  454000,Henan,China

Abstract: 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 were analyzed, and the stress distribution and dynamic response law of explosion-proof door at different times were obtained. The numerical simulation results showed that when the volume concentration of CH₄ was 9.5% , the blast door started to open when the blast shock wave pressure was 26 kPa，and the pressure reached the peak value of 782 kPa when the blast door opening was 12℃. The pressure at different times was introduced into ANSYS stress analysis software, 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. Based on this，the door structure was optimized， and the material strength check results showed that the optimization effect was better.

Key words:air shaft;explosion-proof door;gas explosion;stress distribution;dynamic response;structure optimization

瓦斯爆炸冲击波作用下防爆门应力分布及动态响应特性研究_马尚祯.pdf