进风巷空冷器的位置对工作面的降温效果和降温效率的高低有重要影响。论文提出了空冷长度的概念,确定了空冷长度的计算方法,根据工作面允许的进风温度,确定了工作面进风巷空冷器的有效位置。采用有限元分析方法,建立了空冷器在进风巷不同安装位置下的采煤工作面热力学模型,并对其进行了模拟。根据计算和有限元分析的结果,对某矿采煤工作面进风巷空冷器不同位置时的风流热力参数进行了测定,现场测定结果与模拟效果表明:进风巷空冷器有效位置的确定方法合理,模型结果能够满足模拟要求,可以用来对工作面进风巷空冷器有效位置进行设计。
The air-cooler position in intake alley has the important affect to the working face cooling effect and cooling efficiency. The paper brings forward the conception of air cooling down length, and determines the calculation methods of air cooling down length. Based on the allowable inlet air temperature, the effective position of air-cooler in working face intake alley is determined. Applying finite element analysis method, working face thermodynamics models are established when the air-cooler is at different positions in intake alley, and the cooling effects are simulated. Based on the calculation and finite element analysis result, the different point temperature under the condition of the air-cooler different position in working face intake alley is measured. Compare the local measurement result with simulation result, it shows that the determination mothod of air-cooler in intake alley is reasonable, the thermodynamics model can be satisfied with the require of simulation, it can be applied to the design of the effective position in intake alley of high temperature working face.