综采工作面供液系统负载流阻理论分析及试验
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摘要
通过理论分析推导了环形供液模式下综采工作面供液系统负载流阻损失计算公式,并以黄陵煤矿1号工作面供液系统为例,得出了工作面不同液压支架处负载流阻损失分布;在工作面每隔20架支架安装1个压力传感器来测试供液系统管路压力,得到的压差与理论计算结果接近,验证了负载流阻损失计算公式的正确性;分别在采煤机速度为8,12m/min,单泵供液及双泵供液模式下,通过试验得出了供液系统泵站出口压力分布,并统计了系统卸载时间比与加载时间比,为后续跟机自动化过程中供液系统智能控制和优化提供了参考。
Computational formulas of load flow resistance loss of fluid supply system in fully mechanized mining face under circular fluid supply mode were derived through theoretical analysis.Taking fluid supply system of No.1 working face in Huangling Coal Mine as an example,load flow resistance loss distribution at different hydraulic support position in working face was obtained.Pipeline pressure in the fluid supply system was tested through installing one pressure sensor every twenty supports in the working face.Pressure difference approaches the theoretically calculated value,which verifies correctness of the computational formulas of load flow resistance loss.Pump outlet pressure distribution in the fluid supply system was obtained through test under shearer speed of 8 m/min or 12 m/min with single pump or double pumps fluid supply mode separately.Meanwhile,unloading time ratios and loading time ratios of the fluid supply system were counted so as to provide a reference for intelligent control and optimization of fluid supply system during automatic following control.
Computational formulas of load flow resistance loss of fluid supply system in fully mechanized mining face under circular fluid supply mode were derived through theoretical analysis.Taking fluid supply system of No.1 working face in Huangling Coal Mine as an example,load flow resistance loss distribution at different hydraulic support position in working face was obtained.Pipeline pressure in the fluid supply system was tested through installing one pressure sensor every twenty supports in the working face.Pressure difference approaches the theoretically calculated value,which verifies correctness of the computational formulas of load flow resistance loss.Pump outlet pressure distribution in the fluid supply system was obtained through test under shearer speed of 8 m/min or 12 m/min with single pump or double pumps fluid supply mode separately.Meanwhile,unloading time ratios and loading time ratios of the fluid supply system were counted so as to provide a reference for intelligent control and optimization of fluid supply system during automatic following control.
引文
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[17]王喜贵.液压支架供回液系统的阻力损失分析[J].煤矿机械,2011,32(5):87-88.WANG Xigui.Analysis on resistance loss of hydraulic support's liquid pipeline system[J].Coal Mine Machinery,2011,32(5):87-88.
[18]符大利,袁建平.国产综采装备在黄陵矿业的无人化开采应用[J].煤矿机电,2015(1):125-126.
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[20]赵宗峰,周守军,李海明.管段阻力数计算方法对热网水力计算的影响[J].煤气与热力,2015,35(4):16-20.ZHAO Zongfeng,ZHOU Shoujun,LI Haiming.Effect of calculation method of pipe resistance coefficient on hydraulic calculation of heat-supply network[J].Gas&Heat,2015,35(4):16-20.
[2]徐建军.智能化开采控制系统设计[J].煤矿机电,2017(5):33-38.XU Jianjun.Design of intelligent mining control system[J].Colliery Mechanical&Electrical Technology,2017(5):33-38.
[3]牛剑峰.综采液压支架跟机自动化智能化控制系统研究[J].煤炭科学技术,2015,43(12):85-91.NIU Jianfeng.Study on automatic and intelligent following control system of hydraulic powered support in fully-mechanized coal mining face[J].Coal Science and Technology,2015,43(12):85-91.
[4]杨成,刘玮瑶.液压支架电液控制系统在黄陵一号煤矿无人化综采工作面项目中的应用[J].价值工程,2015,34(21):122-124.YANG Cheng,LIU Weiyao.Application of hydraulic support electro-hydraulic control system in the unmanned comprehensive mechanized coal mining face project in the 1st Mine of Huangling[J].Value Engineering,2015,34(21):122-124.
[5]陈养才.推进两化融合提升煤炭工业科学化水平[J].煤炭经济研究,2012,32(4):5-9.CHEN Yangcai.Promoting integration of coal industrial informationization and industrialization and to improve scientific level of coal industry[J].Coal Economic Research,2012,32(4):5-9.
[6]石勇,林江,崔志芳,等.综采工作面中部跟机自动化控制的数学模型[J].工矿自动化,2016,42(11):14-19.SHI Yong,LIN Jiang,CUI Zhifang,et al.Mathematical model of automatic following control in the middle of fully mechanized mining face[J].Industry and Mine Automation,2016,42(11):14-19.
[7]张守祥,王汝琳,刘芳.综采跟机自动化系统分析与建模[J].工矿自动化,2006,32(4):4-7.ZHANG Shouxiang,WANG Rulin,LIU Fang.The analysis and modeling of automatic system of machinery-tracked of fully mechanized coal mining[J].Industry and Mine Automation,2006,32(4):4-7.
[8]郑春章.薄煤层综采工作面自动化移架技术与三机配置联动技术研究[J].黑龙江科学,2018,9(5):64-65.ZHENG Chunzhang.Thin coal seam fully mechanized face moving technology and three-machine configuration technology[J].Heilongjiang Science,2018,9(5):64-65.
[9]高卫勇,张敏娟.综采工作面液压支架跟机自动化工艺研究[J].工矿自动化,2018,44(11):14-17.GAO Weiyong,ZHANG Minjuan.Research on following automation technology of hydraulic support on fully-mechanized coal mining face[J].Industry and Mine Automation,2018,44(11):14-17.
[10]张良,李首滨,黄曾华,等.煤矿综采工作面无人化开采的内涵与实现[J].煤炭科学技术,2014,42(9):26-29.ZHANG Liang,LI Shoubin,HUANG Zenghua,et al.Definition and realization of unmanned mining in fullymechanized coal mining face[J].Coal Science and Technology,2014,42(9):26-29.
[11]索智文.煤矿综采工作面无人化开采技术研究[J].工矿自动化,2017,43(1):22-26.SUO Zhiwen.Study on unmanned mining technology of fully mechanized coal mining face[J].Industry and Mine Automation,2017,43(1):22-26.
[12]于亚运,宋建成,田慕琴,等.液压支架跟机自动控制系统的开发及应用[J].煤矿机械,2015,36(8):235-239.YU Yayun,SONG Jiancheng,TIAN Muqin,et al.Development and application of automatic control system of hydraulic supports tracking for shearer[J].Coal Mine Machinery,2015,36(8):235-239.
[13]陶显,林福严,张晓青,等.液压支架电液控制系统跟机自动化技术研究[J].煤炭科学技术,2012,40(12):84-87.TAO Xian,LIN Fuyan,ZHANG Xiaoqing,et al.Study on automatic following technology of electric and hydraulic control system applied in hydraulic powered support[J].Coal Science and Technology,2012,40(12):84-87.
[14]付翔,王然风,赵阳升.工作面支架液压系统仿真与稳压供液技术[J].煤炭学报,2018,43(5):1471-1478.FU Xiang,WANG Ranfeng,ZHAO Yangsheng.Investigation of hydraulic system simulation and fluid feeding technology with steady pressure of working face supports[J].Journal of China Coal Society,2018,43(5):1471-1478.
[15]王然风,付翔,赵阳升,等.适应液压支架动作的稳压供液技术研究[J].工矿自动化,2018,44(2):32-38.WANG Ranfeng,FU Xiang,ZHAO Yangsheng,et al.Research on stabilized pressure hydraulic fluid supply technology adapted to hydraulic support action[J].Industry and Mine Automation,2018,44(2):32-38.
[16]车鹏,吴勇,赵玉贝,等.液压支架供液方式压力损失分析[J].液压气动与密封,2013,33(7):69-72.CHE Peng,WU Yong,ZHAO Yubei,et al.Pressure loss analysis of hydraulic support different feed liquid manner[J].Hydraulics Pneumatics&Seals,2013,33(7):69-72.
[17]王喜贵.液压支架供回液系统的阻力损失分析[J].煤矿机械,2011,32(5):87-88.WANG Xigui.Analysis on resistance loss of hydraulic support's liquid pipeline system[J].Coal Mine Machinery,2011,32(5):87-88.
[18]符大利,袁建平.国产综采装备在黄陵矿业的无人化开采应用[J].煤矿机电,2015(1):125-126.
[19]吴根茂,邱敏秀,王庆丰,等.新编实用电液比例技术[M].杭州:浙江大学出版社,2010:1-50.
[20]赵宗峰,周守军,李海明.管段阻力数计算方法对热网水力计算的影响[J].煤气与热力,2015,35(4):16-20.ZHAO Zongfeng,ZHOU Shoujun,LI Haiming.Effect of calculation method of pipe resistance coefficient on hydraulic calculation of heat-supply network[J].Gas&Heat,2015,35(4):16-20.