Characteristicanalysis of spraying system of intelligent mine sprinklers based on Fluent

doi:10.16265/j.cnki.issn1003-3033.2023.S2.0034

Abstract

Abstract:

In view of the ″blind spot″ of underground automatic dust prevention and the low intelligence of the mine sprinklers, a variable spraying system of intelligent mine sprinklers was developed. Firstly, the spraying model was established by using SolidWorks software and ANSYS Fluent simulation software. Secondly, the influence of wind velocity on the spraying range of the sprinkler under different working conditions was analyzed. Finally, the spraying range of the sprinkler under four wind velocity conditions of 0.9, 3.45, 4.4 m/s, and 6.7 m/s was simulated and verified. The results show that when the nozzle diameter is constant, the output of water mist particles of the nozzle is affected by the water velocity of the nozzle, and with the increase in water flow, the output of dust particles increases, and the spraying amount of the spraying system increases. At the same water velocity, with the increase in wind velocity, the fog droplet particles are affected by the wind, and the captured particles falling to the ground decrease, or in other words, the spraying range decreases. Therefore, when the dust reduction area is fixed, with the strengthening of the environmental wind field, the water flow should be appropriately increased to improve the spraying uniformity and effective dust reduction effect.

Key words: Fluent, mine sprinkler, spraying system, simulation, dust reduction

CLC Number:

X964工业防尘

YU Jingbin, RONG Bao, ZHAO Ziwei, BAO Weiwei, SHI Yinfang. Characteristicanalysis of spraying system of intelligent mine sprinklers based on Fluent[J]. China Safety Science Journal, 2023, 33(S2): 164-169.

Figures/Tables 13

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水压力/MPa		1.5	2	3	4
喷嘴口径/ mm	1.0	150	120	98	78
	1.2	187	153	121	98
	1.5	230	196	168	131
	2.0	285	245	208	179

水压力/MPa		1.5	2	3	4
喷嘴口径/ mm	1.0	3.2	3.4	3.8	4.2
	1.2	2.6	2.9	3.2	3.6
	1.5	1.8	2.2	2.7	3.1
	2.0	1.1	1.4	1.8	2.2

风等级	名称	风速/ (m·s^-1)	陆地地面物体征象
0	无风	0~0.2	静
1	软风	0.3~1.5	雾状气体可显示风向
2	轻风	1.6~3.3	人可感受有风,风向标可转动
3	微风	3.4~5.4	植物会受风轻微晃动
4	和风	5.5~7.9	地面灰尘与纸张会被吹起
5	清风	8.0~10.7	存在叶树木会摇摆
6	强风	10.8~13.8	树枝动,电线摇摆
7	疾风	13.9~17.1	整树产生摇动,迎风而行受阻
8	大风	17.2~20.7	树枝折断,迎风阻力加大
9	烈风	20.8~24.4	建筑物产生轻微损坏
10	狂风	24.5~28.4	树被吹毁,建筑物损坏加大
11	暴风	28.5~32.6	较少见,破坏加大
12	飓风	32.6	极少见,摧毁力极大

水速/ (m·s^-1)	风速/ (m·s^-1)	有效洒布距离/m	被捕捉粒子数
12	0.9	6.37	149
	3.45	4.94	131
	4.4	4.45	109
	6.7	3.78	92
16	0.9	6.54	216
	3.45	5.29	209
	4.4	4.75	180
	6.7	3.97	165
20	0.9	6.87	256
	3.45	5.51	239
	4.4	5.05	227
	6.7	4.17	210

水速/ (m·s^-1)	风速/ (m·s^-1)	有效洒布距离/m	误差/%
12	0.9	6.86	7.69
	3.45	5.22	5.67
	4.4	4.79	7.64
	6.7	4.25	12.43
16	0.9	7.03	7.49
	3.45	5.77	9.07
	4.4	5.26	10.74
	6.7	4.46	12.34
20	0.9	7.34	6.84
	3.45	6.33	14.88
	4.4	5.71	13.06
	6.7	4.65	9.35