新型立井防爆门冲击力学响应与泄压复位行为

Impact mechanical response and pressure relief-reset behavior of innovative shaft explosion-proof door

针对传统防爆门在应急启用过程中无法复位及多次使用的问题,本文开展防爆门冲击力学响应特性与泄压、复位性能的建模研究.基于羊场湾2号井智能通风示范建设中新型防爆门的关键技术及其优化设计,采用非线性有限元方法研究了爆炸波工况下防爆门泄压、复位全过程的冲击动力学现象,分析了防爆盖体力学响应分布的瞬态变化规律,模拟了冲击载荷下防爆门的运动学行为.论证结果表明:在最大0.9 MPa冲击载荷下,新型防爆门可满足抗冲击力学性能,具有重复使用的能力;通过限位机构约束防爆门平稳运行,可保证其泄压、复位动作可靠;结合自控设计可实现新型防爆门的快速连续有效复位.

Aiming at the problem that the traditional explosion-proof door can not be reset and reused in the process of emergency opening,this paper carried out the modeling research on the impact mechanical response characteristics,pressure relief and reset performance of explosion-proof door.Based on the key technology and optimization design of the new explosion-proof door in the intelligent ventilation demonstration construction of Yangchangwan No.2 well,the shock dynamics of the explosion-proof door in the whole process of pressure relief and reset under the condition of explosion wave was studied by using the nonlinear finite element method,the transient change law of the mechanical response distribution of the explosion-proof cover was analyzed,and the kinematics behavior of the explosion-proof door under the impact load was simulated.The results show that,under the maximum impact load of 0.9 MPa,the new explosion-proof door can meet the impact resistance mechanical properties and has the ability of reuse.The stable operation of the explosion-proof door is restrained by the limiting mechanism,which can ensure the reliable pressure relief and reset action.Combined with the automatic control design,the new explosion-proof door can be reset quickly,continuously and effectively.