滚筒结构参数对粉尘爆炸率的影响

Effect of drum structure parameters on dust explosion rate

通过假设与简化,建立了采煤工作面粉尘爆炸率与采煤机滚筒设计参数间关系的数学模型。以国产某型滚筒式采煤机为例,采用计算机模拟的方法得到了采煤机滚筒直径、螺旋叶片头数与粉尘爆炸率之间的关系曲线。通过分析,确定了各参数对粉尘爆炸率的影响,为预测不同结构滚筒参数的采煤机对粉尘爆炸率的影响,完善采煤机工作性能的评价体系,改进滚筒设计,减小采煤机的截割粉尘,降低粉尘爆炸率,提高煤炭生产的安全性提供理论依据。

A mathematical model of relation between dust explosion rate on a coal face and design parameters of a shearer drum is set up by supposing and simplification in the paper. With a drum shearer made in china as an example, relative curves of drum diameter, number of spiral vane on a drum and duct explosion rate on a coalface are given by means of computer simulation with the mathematical model and effects of each parameter on duct explosion rate are determined by analysis, which provides a theoretic basis for forecasting effects of different structure parameter shearer on duct explosion rate, perfecting a appraising system of shearer working performances, improving the drum design, reducing cutting dust of a shearer, lowering duct explosion rate and increasing safety of coal production.