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首页> 外文会议>The 6th international conference on mining science amp; technology (ICMST2009) >Theoretical model of air curtain with serials-parallel fans and experimental study
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Theoretical model of air curtain with serials-parallel fans and experimental study

机译：串并联风机风幕理论模型及实验研究

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摘要

Based on effective pressure theory without air partition and jet flow theory, the theoretical model of airflow being ejected by serials-parallel air curtain was set up and analyzed the influencing factors through numerical simulation. Meanwhile, according to the condition that inverted air current and insufficient air volume in transportation laneway in some iron mines, the experiment on air flow being ejected by serials-parallel air curtain was carried out through contrast experiment. The results show: (1) The serials-parallel air curtain can effectively eject air flow and the air volume can reach 24.3 m3/s～36.8 m3/s, which enhances the driving visibility in laneway and thus facilitating safety driving of trackless diesel vehicle and workers' health underground; (2) The influence degree of air curtain on air volume of main fans is about 0.6%, by which the air flow being ejected is favorable for order flow in the laneway. (3) The running noise of serials-parallel air curtain was 76~92 dB (A), which is less interfered with the working environment near by 300 m. Moreover, the time of workers being exposed to the noise is short, so the damage degree is low. (4) The serials-parallel air curtain is installed in chambers on the two sides of laneway, which does not affect the pedestrian and the traveling of trackless diesel vehicle.
机译：基于没有空气分配的有效压力理论和射流理论，建立了串并联风幕喷射气流的理论模型，并通过数值模拟分析了影响因素。同时，在一些铁矿山，根据气流反向和输送巷道风量不足的情况，通过对比实验对串并联风幕喷射的气流进行了实验。结果表明：（1）串并联风幕能有效地排出气流，风量达到24.3 m3 / s〜36.8 m3 / s，增强了巷道的驾驶视野，有利于无轨柴油机的安全驾驶。以及地下工人的健康； （2）气幕对主风扇风量的影响程度约为0.6％，由此排出的气流有利于巷道中的有序气流。 （3）串并联风幕的运行噪声为76〜92 dB（A），对300 m附近的工作环境干扰较小。而且，工人暴露于噪音的时间短，因此损害程度低。 （4）串并联风幕安装在巷道两侧的室内，不影响行人和无轨柴油机的行驶。

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