Tail gas purification and fire retardance device for workover rig

The invention provides a workover rig tail gas purification and fire retardance device, and belongs to the technical field of diesel engine tail gas purification. The device comprises a damping steel wire pipe, a front cooling working cavity, a rear cooling working cavity, a smoke dust filtering and purifying fire-retardant system and a purging recovery and safety pressure relief system. The internal structure is compact, the aerodynamic principle is fully considered in all the filtering and purifying subareas, it is ensured that tail gas is discharged smoothly, the exhaust back pressure is reduced, and meanwhile the requirement for smoke intensity and spark control in tail gas emission is met. 本发明提供一种修井机尾气净化阻火装置，属于柴油机尾气净化技术领域。本发明包括减震钢丝管、前置降温工作腔、后置降温工作腔、烟尘过滤及净化阻火系统、吹扫回收及安全泄压系统。本发明内部结构紧凑，各过滤净化分区充分考虑空气动力学原理，确保尾气排放顺畅，减少排气背压，同时满足对尾气排放中的烟度和火花控制。