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对煤矿井下避难硐室内部实际的排风情况进行理论分析,确定了影响硐室排风速度大小的因素,得出排风速度不仅与外接压风供风量、内外压差有关,而且和排风管道直径有关。由于排风速度受到这些因素的影响,在硐室内外压差控制在一定范围内的条件下,保证内部空气质量,提出了设计硐室快速排气装置的要求,从装置的作用、能源节约、操作简便等方面进行设计,满足煤矿井下紧急避险系统无大功率、大容量电源,无安全隐患,易维护、经济实用等要求。
The theoretical analysis of the actual exhaust conditions inside the evacuation chamber in coal mine and the factors influencing the evacuation velocity of the chamber are determined. The conclusion is drawn that the evacuation speed is not only related to the supply pressure of external pressure air supply and the pressure difference between inside and outside, Pipe diameter related. As the exhaust velocity is affected by these factors, the internal air quality is guaranteed under the condition that the pressure difference between the inside and outside of the chamber is controlled within a certain range, and the requirements for designing a rapid exhaust chamber for a chamber are proposed. From the functions of the device, energy conservation, Easy operation and other aspects of design to meet the coal mine emergency hedging system without high-power, high-capacity power supply, no security risks, easy to maintain, economical and practical requirements.