基于Fluent的智能矿用洒水车喷洒系统特性分析

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

摘要/Abstract

摘要：

为解决井下自动防尘盲区及矿用洒水车智能化不高的问题,研发一种智能矿用洒水车变量喷洒系统。首先,利用SolidWorks软件和ANSYS Fluent仿真软件建立喷洒模型;其次,分析喷洒系统不同工况下,风速对洒水车喷洒范围的影响;最后,分别模拟仿真洒水车在0.9、3.45、4.4、6.7 m/s共4种风速条件的洒布范围并验证。结果表明:喷嘴口径一定时,喷雾喷头的水雾粒子输出量受喷头水速的影响,随着水流量的增加,降尘粒子的输出量增多,喷洒系统的洒布量增加。相同水速条件下,随风速的增加,雾滴粒子受风力影响,降落至地面的被捕捉粒子减少,即洒布范围减小。降尘区域一定时,随着环境风场的加强,应当适当提升水流量,以提升洒水均匀度和有效降尘效果。

关键词: Fluent, 矿用洒水车, 喷洒系统, 模拟仿真, 降尘

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

中图分类号:

X964工业防尘

于景斌, 荣宝, 赵子未, 包玮玮, 史印方. 基于Fluent的智能矿用洒水车喷洒系统特性分析[J]. 中国安全科学学报, 2023, 33(S2): 164-169.

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.

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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