煤矿井下气水喷雾雾化效果实验研究及应用
Experimental research and application of atomization effect of gas-water spray in underground coal mine
-
摘要: 为了研究气水喷嘴内部结构参数对雾化性能的影响，基于自行搭建的试验平台，以及多普勒激光雾粒测数仪来分析不同结构参数喷嘴的雾化特性，并进行现场试验验证。研究得出：在水压一定时，随着供气压力的增加，喷嘴的3个关键内部结构参数尺寸与耗气量、射程成逐渐增加；压气喷嘴空气帽直径直径越大，喷雾雾化后粒径尺寸越大，粒径分布范围越广，小尺寸粒径占比越小；同时，在空气帽直径一定时，适当增加气道和水道直径能优化雾化效果。将试验结果中雾化效果最好的喷嘴4进行煤矿井下现场试验，得出在顺逆风割煤时，下风侧司机处与采煤机下风侧15~20 m处降尘效率分别为61%、62%、62%、63%，表现出较好的降尘效果。Abstract: In order to study the influence of the internal structural parameters of the gas-water nozzle on the atomization performance, the atomization characteristics of the nozzles with different structural parameters were analyzed based on the self-built test platform and the Doppler laser fog particle counter, and field test verification was carried out. The research shows that when the water pressure is constant, with the increase of the air supply pressure, the size of the three key internal structural parameters of the nozzle and the air consumption, and the range of the nozzle gradually increase; the larger the diameter, the wider the range of particle size distribution, and the smaller the proportion of small-sized particles. At the same time, when the diameter of the air cap is constant, appropriately increasing the diameter of the air passage and water passage can optimize the atomization effect; the 4# nozzle with the best atomization effect in the test results is carried out in the underground coal mine field test, and it is concluded that the dust reduction efficiency at the side of the driver and 15 m to 20 m on the downwind side of the shearer is 61%, 62%, 62%, and 63% respectively, showing good dust reduction effects.
-
-
[1] 刘峰，曹文君，张建明，等.我国煤炭工业科技创新进展及“十四五”发展方向[J].煤炭学报，2021，46（1）：1-15. LIU Feng, CAO Wenjun, ZHANG Jianming, et al. Current technological innovation and development direction of the 14th Five-Year Plan period in China coal industry[J]. Journal of China Coal Society, 2021, 46（1）: 1.
[2] 袁亮.我国煤炭工业高质量发展面临的挑战与对策[J].中国煤炭，2020，46（1）：6-12. YUAN Liang. Challenges and countermeasures for high quality development of China’s coal industry[J]. China Coal, 2020, 46（1）: 6-12.
[3] 袁亮.煤矿粉尘防控与职业安全健康科学构想[J].煤炭学报，2020，45（1）：1-7. YUAN Liang. Scientific conception of coal mine dust control and occupational safety[J]. Journal of China Coal Society, 2020, 45（1）: 1-7.
[4] 李德文，隋金君，刘国庆，等.中国煤矿粉尘危害防治技术现状及发展方向[J].矿业安全与环保，2019，46（6）：1-7. LI Dewen, SUI Jinjun, LIU Guoqing, et al. Technical status and development direction of coal mine dust hazard prevention and control technology in China[J]. Mining Safety & Environmental Protection, 2019, 46（6）: 1-7.
[5] 程卫民，周刚，陈连军，等.我国煤矿粉尘防治理论与技术20年研究进展及展望[J].煤炭科学技术，2020， 48（2）：1-20. CHENG Weimin, ZHOU Gang, CHEN Lianjun, et al. Research progress and prospect of dust control theory and technology in China’s coal mines in the past 20 years[J]. Coal Science and Technology, 2020, 48（2）: 1-20.
[6] 王鹏飞，刘荣华，汤梦，等.煤矿井下高压喷雾雾化特性及其降尘效果实验研究[J].煤炭学报，2015，40（9）：2124-2130. WANG Pengfei, LIU Ronghua, TANG Meng, et al. Experimental study on atomization characteristics and dust suppression efficiency of high pressure spray in underground coal mine[J]. Journal of China Coal Society, 2015, 40（9）: 2124-2130.
[7] 聂文，程卫民，周刚.综掘工作面压风气幕形成机理与阻尘效果分析[J].煤炭学报，2015，40（3）：609-615. NIE Wen, CHENG Weimin, ZHOU Gang. Formation mechanism of pressure air curtain and analysis of dust suppression’s effects in mechanized excavation face[J]. Journal of China Coal Society, 2015, 40（3）: 609-615.
[8] 艾吉文，高智雪，张丽，等.内混式空气雾化喷嘴雾化性能的实验及模拟研究[J].计算机与应用化学，2019，36（6）：645-651. AI Jiwen, GAO Zhixue, ZHANG Li, et al. Experimental and simulation study on atomization performance of internal mixing air atomizing nozzle[J]. Computers and Applied Chemistry, 2019, 36（6）: 645-651.
[9] 曹建明，朱辉，郭广祥，等.空气助力改善液滴雾化质量的研究[J].实验流体力学，2013，27（1）：56-60. CAO Jianming, ZHU Hui, GUO Guangxiang, et al. Study on air assistant to improve quality of droplet atomization[J]. Journal of Experiments in Fluid Mechanics, 2013, 27（1）: 56-60.
[10] 侯腾彦，高贵军，刘邱祖.矿用风水雾化器液滴破碎机理及其降尘效率研究[J].矿山机械，2014（7）：132-135. HOU Tengyan, GAO Guijun, LIU Qiuzu. Study on droplet breakup mechanism and dust-fall efficiency of mine wind-water atomizer[J]. Mine Machinery, 2014（7）: 132-135.
[11] 蒋仲安，王明，陈举师，等.气水喷嘴雾化特征与降尘效果分析[J].哈尔滨工业大学学报，2017，49（2）：151-157. JIANG Zhong’an, WANG Ming, CHEN Jushi, et al. Atomization characteristics and dust suppression mechanism of a gas-water nozzle[J]. Journal of Harbin Inetitute of Technology, 2017, 49（2）: 151-157.
[12] 王鹏飞，刘荣华，桂哲，等.煤矿井下气水喷雾雾化特性及降尘效率理论研究[J].煤炭学报，2016，41（9）：2256-2262. WANG Pengfei, LIU Ronghua, GUI Zhe, et al. Theoretical research on atomization characteristics and dust suppression efficiency of air-water spray in underground coal mine[J]. Journal of China Coal Society, 2016, 41（9）: 2256-2262.
[13] 王鹏飞，李泳俊，刘荣华，等.内混式空气雾化喷嘴雾化特性及降尘效率研究[J].煤炭学报，2019，44（5）：1570-1579. WANG Pengfei, LI Yongjun, LIU Ronghua, et al. Spray characteristics and dust removal efficiency of internal-mixing air atomizing nozzle[J]. Journal of China Coal Society, 2019, 44（5）:1570-1579.
[14] 蒋仲安，王亚朋，许峰.金属矿山气-水喷头雾化特性及降尘能力实验研究[J]．中南大学学报（自然科学版），2020，51（1）：184-192. JIANG Zhongan, WANG Yapeng, XU Feng. Experimental study on atomization characteristics and dust reduction capacity of gas-water nozzles in metal mines[J]. Journal of Central South University（Science and Technology), 2020, 51（1）: 184-192.
[15] 汲银凤，陈举师，张波，等.气水喷嘴雾化特性实验研究[J].中国安全生产科学技术，2017，13(12)：27-32. JI Yinfeng, CHEN Jushi, ZHANG Bo. Experimental research on atomization characteristics of air-water nozzle[J]. Journal of Safety Science and Technology, 2017, 13（12）: 27-32.
[16] 陈聪，刘振.基于多普勒技术的气水喷嘴雾场粒度速度实验研究[J].煤矿安全，2017，48（12）：33-36. CHEN Cong, LIU Zhen. Experimental study on particle size velocity of air-water nozzle fog field based on doppler technology[J]. Safety in Coal Mines, 2017, 48（12）: 33-36.
[17] 贾卫东，李成，薛飞，等.背负式静电喷雾器设计与试验[J].高电压技术，2012，38（5）：1078-1083. JIA Weidong, LI Cheng, XUE Fei, et al. Design and experiment of knapsack electrostatic sprayer[J]. High Voltage Engineering, 2012, 38（5）: 1078-1083.
计量
- 文章访问数: 101
- HTML全文浏览量: 1
- PDF下载量: 48
下载:
