瓦斯-细水雾输送管道90°弯管处压降研究

Research on 90 ° Elbow Pressure Drop in Gas-water Mist Transportation Pipeline

摘要: 随着研究的不断深入，低浓度瓦斯-细水雾两相流体管道安全输送技术在煤矿中开始应用。为了弄清瓦斯气体管道输送时局部管件处的压力损失情况，对瓦斯-细水雾输送管道90°弯管处压降情况进行数值模拟和试验研究。结果表明：90°弯管处两相流体的压降随速度的增加而增大；随管径的增大而减小；随弯径比的增大而先减小后增大，最佳弯径比为2.8～3.2。90°弯管处的压降试验验证了数值模拟的结果。
- 瓦斯 /
- 细水雾 /
- 90°弯管 /
- 压降 /
- 数值模拟 /
- 弯径比
Abstract: With the deepening of research, the low concentration gas - water mist two-phase fluid in the pipeline transportation technology are safely applied in coal mine. To detect pressure loss of the local pipe fittings in gas pipeline, numerical simulation and experiment research for gas - water mist pipeline at 90 ° elbow drop case was carried out. Numerical analysis shows that the two-phase fluid pressure drop increases with the increase of the speed at 90°elbow and decreases with increasing diameter of pipe and first decreases and then increases with the increase of bending moment ratio, the best bending moment ratio is from 2.8 to 3.2. 90°elbow pressure drop test verifies the effectiveness of the numerical simulation results.
- gas /
- water mist /
- 90 °elbow /
- pressure drop /
- numerical simulation /
- bending diameter ratio

[1]	崔洪庆，张振安，李德军．基于一元非线性回归理论的矿井深部瓦斯含量预测[J]．河南理工大学学报：自然科学版，2012，16(3)：637-640．
[2]	李润之，张延松，李新建．低浓度瓦斯安全输送成套技术开发与装备研制的发展趋势[J]．矿业安全与环保，2008，35(增刊)：97-101．
[3]	何卫红，李胜利．煤矿瓦斯发电实践与探索[J]．煤炭加工与综合利用，2008（5）：50-52．
[4]	刘志超，郝晶晶，齐博．细水雾在低浓度瓦斯输送管道中沉降规律的研究[J]．煤炭工程，2013，40(2)：91．
[5]	阎昌琪．气液两相流[M]．哈尔滨：哈尔滨工程大学出版社，2007．
[6]	桑钱锋．水煤浆局部管件内流动的阻力特性试验研究[D]．南京：东南大学，2010．
[7]	林宗虎，王树众，王栋．气液两相流和沸腾传热[M]．西安：西安交通大学出版社，2003．