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可以利用脉冲式通风方式提高瓦斯量大的独头掘进巷道的风流紊流程度和改善沼气空气混合的风流的质量。实现脉冲式通风的方法就是在风筒的近工作面一端加装一个风流断续器。所谓风流断续器,就是一个能在挠性风筒内流动的风流的作用下旋转的可回转闸片。闸片旋转,定期地遮断风筒的风道,使空气在余压下泄入近工作面区的大气中.这种通风方式可保证在被通风巷道的一定长度上空气的流动具有脉冲特性。决定脉冲式遇风是否有效的一个重要条件是,风流断续器的工况能保持最佳的脉冲
Pulsed ventilation can be used to improve the degree of turbulence of the flow of single-head roadway with high gas volume and improve the air quality of the biogas-air mixture. To achieve pulsed ventilation is the wind near the face of the installation of a flow interrupter. The so-called air flow interrupter, is a can rotate in the flexible air duct under the effect of rotating rotary gate. The blades rotate to cut off the air duct of the air duct periodically to make the air leak into the atmosphere near the working face under the residual pressure.This ventilation ensures that the air flow has a pulse characteristic over a certain length of the ventilated roadway. An important condition for determining whether pulsating wind is effective is that the condition of the flow interrupter maintains the best pulse