Quality evaluation of laser drilling of micro-sprinkling hose and its influence on orifice flow rate
WANG Xiaoshan1,XU Yuncheng1,2,3,ZHOU Lingjiu1,2,TAN Haibin4,HUI Xin1,YAN Haijun1,2,3*
1. College of Water Resources and Civil Engineering, China Agricultural University, Beijing 100083, China; 2. Research Center of Safety and Energy Saving Technology for Water Supply Network System, Beijing 100083, China; 3. Engineering Research Center for Agricultural Water-Saving and Water Resources, Ministry of Education, Beijing 100083, China; 4. Hebei Science and Technology Innovation Service Center, Shijiazhuang, Hebei 050051, China
Abstract：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 indicated that the relative error of the orifice area measured from the inside and the outside was less than 10% for two micro-sprinkling hoses. Both the average roundness of individual orifices for the imported and domestic micro-sprinkling hoses ranged 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 was less than 0.040, and the flow rate deviation coefficient was 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 displayed 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 could 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.
收稿日期: 2022-11-18
基金资助:河北省重点研发计划项目(20327003D,21327002D)
引用本文:
汪小珊,徐云成,周凌九,檀海斌,惠鑫,严海军,*. 微喷带激光打孔质量评价及对喷孔流量的影响[J]. 排灌机械工程学报, 2024, 42(7): 749-756.
WANG Xiaoshan,XU Yuncheng,ZHOU Lingjiu,TAN Haibin,HUI Xin,YAN Haijun,*. Quality evaluation of laser drilling of micro-sprinkling hose and its influence on orifice flow rate. Journal of Drainage and Irrigation Machinery Engin, 2024, 42(7): 749-756.
