卷盘式喷灌机用斜击式和切击式水涡轮外特性试验与对比分析

侯新月; 汤玲迪; 李浩; 郎景波; 邱志鹏

引用本文:	侯新月,汤玲迪,李浩,等.卷盘式喷灌机用斜击式和切击式水涡轮外特性试验与对比分析[J].灌溉排水学报,2019,(8):-.
	Hou Xinyue,Tang Lingdi,Li Hao,et al.卷盘式喷灌机用斜击式和切击式水涡轮外特性试验与对比分析[J].灌溉排水学报,2019,(8):-.

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卷盘式喷灌机用斜击式和切击式水涡轮外特性试验与对比分析
侯新月¹, 汤玲迪², 李浩³, 郎景波¹, 邱志鹏⁴
1.黑龙江省水利科学研究院;2.江苏大学国家水泵及系统工程技术研究中心;3.中国农业科学院农田灌溉研究所;4.江苏华源节水股份有限公司

摘要:

【目的】掌握目前国内现有斜击式和切击式两种卷盘式喷灌机水涡轮的外特性。【方法】构建了水涡轮外特性试验装置，测试了一定转速下2种型式水涡轮的流量、进出口压力、扭矩、转速等外特性数据，获得了2种型式水涡轮流量-水头、流量-轴功率和流量-效率特性曲线以及一定水头下两种型式水涡轮的转速特性，即转速-效率、转速-功率曲线。【结果】斜击式水涡轮的最优运行转速在300r/min左右，最高效率仅为13.8%，而切击式水涡轮的最优运行转速在600r/min左右，效率为33.7%。在2种型式水涡轮效率最高时，切击式水涡轮的轴功率增加了34.3%，运行流量减少了约29.7%，效率提高了19.9%。【结论】因此，切击式水涡轮总体性能高于斜击式水涡轮。

关键词: 卷盘式喷灌机;斜击式水涡轮;切击式水涡轮;外特性

DOI：

分类号:TK737;S277.9

基金项目:国家重点研发计划项目(2016YFC 0400202,2016YFC0400109)

Experimental and Comparative Analysis on the Hydraulic Performance of Inclined-jet and Tangential Water Turbines for Hose Reel Irrigators

Hou Xinyue¹, Tang Lingdi², Li Hao³, Lang Jingbo¹, Qiu Zhipeng⁴

1.Heilongjiang Province Hydraulic Research Institute;2.National Research Center of Pumps，Jiangsu University;3.Farmland Irrigation Research Institute, Chinese Academy of Agricultural Sciences;4.Jiangsu Huayuan Water-saving Co., LTD.

Abstract:

【Objective】In order to grasp the hydraulic characteristics of the existing water turbines for hose reel irrigators in China including inclined-jet type and tangential type, the water turbine hydraulic characteristic test device is built. 【Method】The hydraulic characteristic data of flow rate, inlet pressure, outlet pressure, torque and rotational speed of the two water turbines at a certain speed were tested, and flow-head, flow-power and flow-efficiency characteristic curves for two water turbines were obtained. In addition, the rotational speed characteristics of the two water turbines under a certain head, namely the rotational speed-efficiency and the rotational speed-power curves can be calculated. 【Result】The test data shows that the optimal operating rotational speed of the inclined-jet water turbine is about 300r/min, the highest efficiency is only 13.8%, while the optimal operating speed of the tangential water turbine is about 600r/min, and the efficiency is 33.7%. Further comparative analysis shows that compared with the performance of the inclined-jet water turbine, the shaft power of the tangential water turbine increased 34.3%, the operating flow rate decreased about 29.7%, and the efficiency increased 19.9 percentage points, when two water turbines operating at the most efficient work point. 【Conclusion】Therefore, the overall performance of the tangential water turbine is better than that of the inclined-jet water turbine, which provides reference data for further improving the performance of the water turbine of the hose reel irrigator.

Key words: hose reel irrigator; inclined-jet water turbine; tangential water turbine; hydraulic performance