| Study on hydraulic performance and anti\|clogging performance of pressure compensating emitters |
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| DOI：10.7606/j.issn.1000-7601.2022.06.14 |
| Key Words: pressure compensating emitter hydraulic performance anti\|clogging sediment particle size irrigation times |
| Author Name | Affiliation | | ZHANG Guilin | College of Modern Agricultural Engineering, Kunming University of Technology, Kunming, Yunnan 650500, China | | YU Liming | College of Modern Agricultural Engineering, Kunming University of Technology, Kunming, Yunnan 650500, China | | LI Shasha | YCIC Ecological Environment Engineering Co., Ltd, Kunming, Yunnan 650500, China | | SU Qian | YCIC Ecological Environment Engineering Co., Ltd, Kunming, Yunnan 650500, China | | ZHOU Bin | YCIC Ecological Environment Engineering Co., Ltd, Kunming, Yunnan 650500, China | | CUI Ningbo | State Key Laboratory of Hydraulics and Mountain River Engineering, College of Water Resource and Hydropower, Sichuan University, Chengdu, Sichuan 610065, China | | YU Xingjiao | College of Modern Agricultural Engineering, Kunming University of Technology, Kunming, Yunnan 650500, China |
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| Abstract: |
| To explore the hydraulic performance and anti\|clog performance of pressure compensating emitters, the hydraulic performance of 11 types of inlet pressures (50~350 kPa) and the anti\|clog performance of three different concentrations of muddy water (3, 5 g·L-1 and 7 g·L-1) were tested with the pressure compensated emitters produced by Huawei Water Saving Irrigation Corp., Ltd. The results showed that under the combined action of pressure compensation shrapnel structure and circular labyrinth runner structure, the uniformity was high pressure compensation, the flow rate index was 0.006, the compensation interval was 110~350 kPa, and the starting pressure was 50 kPa. The relative flow rate decreased with the increase of irrigation times. The clogging rate of the filler increased with the increase in the number of irrigations. After 40 irrigations, 3, 5, 7 g·L-1 under the condition of muddy water, the blockage rate of the filler reached 20.8%, 29.2% and 52.1%, respectively. The anti\|blocking performance of the filler gradually decreased with the increase of the muddy water concentration. When the sediment concentration was 5 g·L-1 and 7 g·L-1, the clogging rate increased significantly. When the sediment concentration was 3 g·L-1, the anti\|clogging performance was good, and the effective use time was extended by 29.73% to 41.89%. The research results provide a meaningful reference for application of pressure compensation fillers in practical engineering. |
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