微喷带激光打孔质量评价及对喷孔流量的影响  

Quality evaluation of laser drilling of micro-sprinkling hose and its influence on orifice flow rate

作　　者：汪小珊 徐云成[1,2,3] 周凌九 檀海斌[4] 惠鑫 严海军 WANG Xiaoshan;XU Yuncheng;ZHOU Lingjiu;TAN Haibin;HUI Xin;YAN Haijun(College of Water Resources and Civil Engineering,China Agricultural University,Beijing 100083,China;Research Center of Safety and Energy Saving Technology for Water Supply Network System,Beijing 100083,China;Engineering Research Center for Agricultural Water-saving and Water Resources,Ministry of Education,Beijing 100083,China;Hebei Science and Technology Innovation Service Center,Shijiazhuang,Hebei 050051,China)

机构地区：[1]中国农业大学水利与土木工程学院,北京100083 [2]北京市供水管网系统安全与节能工程技术研究中心,北京100083 [3]农业节水与水资源教育部工程研究中心,北京100083 [4]河北省科技创新服务中心,河北石家庄050051

出　　处：《排灌机械工程学报》2024年第7期749-756,共8页Journal of Drainage and Irrigation Machinery Engineering

基　　金：河北省重点研发计划项目(20327003D,21327002D)。

摘　　要：喷孔参数和流量是研究微喷带水力性能的基础.为探究微喷带喷孔结构与喷洒特性,选取了国内外2种激光打孔的加强压边型微喷带,每组组孔包含12个喷孔,利用图像处理进行了喷孔参数测量与加工质量评价,并进行了喷孔流量试验.结果表明,2种微喷带从喷孔内侧和外侧测得的面积误差均小于10%;进口微喷带和国产微喷带喷孔的平均圆度分别为0.82~0.88和0.82~0.91,进口微喷带不同组孔内相同位置喷孔的圆度偏差系数低于0.040、流量偏差系数小于0.120,而国产微喷带喷孔的圆度偏差系数和流量偏差系数的波动较大,其值分别为0.009~0.069和0.057~0.475.因此以喷孔面积和圆度为指标,可对不同激光打孔的微喷带喷孔进行评价,当喷孔面积的波动范围和圆度偏差系数较小时,微喷带不同组孔内相同位置的喷孔流量差异性较小.The structural parameters and flow rate of an individual orifice are important to the perfor-mance of a micro-sprinkling hose.To investigate orifice structure and spray characteristics of micro-sprinkling hoses,two kinds of strengthened edge rolling micro-sprinkling hoses using by laser drilling technique from domestic and abroad were selected.Each group of which has an orifice group of 12 orifices.The methods of orifice parameter measurement and machining quality evaluation were proposed based on image processing technology,and the test of orifice flow rate was carried out.The results indicate that the relative error of the orifice area measured from the inside and the outside is less than 10%for two micro-sprinkling hoses.Both the average roundness of individual orifices for the imported and domestic micro-sprinkling hoses ranges from 0.82 to 0.88,and from 0.82 to 0.91,respectively.The roundness deviation coefficient of the individual orifice at the same position of different samples is less than 0.040,and the flow rate deviation coefficient is less than 0.120 for the imported micro-sprinkling hose.Both the deviation coefficients for the roundness and orifice flow rate of the domestic micro-sprinkling hose display a remarkable difference among different samples,with values of 0.009 to 0.069 and 0.057 to 0.475,respectively.Therefore,the area and roundness can be used as indexes to evaluate the individual orifice of different laser drilling micro-sprinkling hoses.The difference of flow rate is small for the individual orifice at the same position in different orifice groups of the micro-sprinkling hose,when the fluctuation of orifice area and the deviation coefficient of roundness is relatively small.

关 键 词：微喷带 喷孔 圆度 偏差系数 评价指标 激光打孔 

分 类 号：S275.5[农业科学—农业水土工程]