基于正交试验的双风机并联机站结构参数优化
Structural Parameter Optimization of Dual Fan Parallel Station Based on Orthogonal Test
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摘要: 为了提高矿井机站的通风效率,以机站局部阻力系数最小为目标,选取机站扩散角、进风段巷道长度、收缩角和出风段巷道长度4个影响因素并设置合理水平进行了正交数值模拟试验。研究结果表明:在风机间距、粗糙度等因素一定的情况下,影响机站局部阻力系数因素的主次顺序为扩散角、收缩角、进风段巷道长度和出风段巷道长度;随着巷道风速的变化,机站最优结构参数是不同的;当巷道风速为1.2~1.5 m/s时结构最优组合为扩散角60°、收缩角30°、进风段巷道长度9 m、出风段巷道长度6 m;在风速为1.5~2 m/s时出风段巷道长度选择10 m机站局部阻力系数较小。Abstract: To improve the ventilation efficiency of mine engine station, aiming at the minimum local resistance coefficient of engine station, the orthogonal numerical simulation test was carried out by selecting four influencing factors including diffusion angle of engine station, roadway length in air inlet, contraction angle and roadway length in air outlet and setting reasonable levels. The results show that the main and the secondary factors affecting the local resistance coefficient of the machine station are diffusion angle, contraction angle, tunnel length in the inlet and the tunnel length in the outlet. With the change of roadway wind speed, the optimal structural parameters of the station are different. When the roadway wind speed is 1.2 m/s to 1.5 m/s, the optimal combination of the structure is 60° diffusion angle, 30° contraction angle, 9 m of roadway length in the inlet section and 6 m of roadway length in the outlet section. When the wind speed is 1.5 m/s to 2 m/s, the local resistance coefficient of 10 m station is selected as the roadway length in the wind outlet section.
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Keywords:
- fan station /
- diffusion angle /
- roadway length /
- contraction angle /
- coefficient of local resistance
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