综采工作面供液系统负载流阻理论分析及试验
Theoretical analysis and test of load flow resistance of fluid supply system in fully mechanized mining face
【索引】周如林.综采工作面供液系统负载流阻理论分析及试验[J].工矿千亿国际app下载,2019,45(4):30-34.
【Reference】ZHOU Rulin.Theoretical analysis and test of load flow resistance of fluid supply system in fully mechanized mining face[J].Industry and Mine Automation,2019,45(4):30-34.
【DOI】10.13272/j.issn.1671-251x.2018120023
【作者】周如林
【Author】 ZHOU Rulin
【作者机构】北京天地玛珂电液控制系统有限公司, 北京100013
【Unit】Beijing Tiandi-Marco Electronic-Hydraulic Control System Company Ltd., Beijing 100013, China
【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8,12 m/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,为后续跟机千亿国际app下载过程中供液系统智能控制和优化提供了参考。
【Abstract】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.
【关键词】 综采工作面; 液压支架电液控制; 跟机自动控制; 供液系统; 负载流阻; 负载流阻损失; 泵站出口压力; 卸载时间比
【Keywords】fully mechanized mining face; electrohydraulic control of hydraulic support; automatic following control; liquid supply system; load flow resistance; load flow resistance loss; pump outlet pressure; unloading time ratio
【文献出处】工矿千亿国际app下载,2019年4期
【基金】
【分类号】TD355
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