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| DOI：10.13522/j.cnki.ggps.2022046 |
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| A New Ultrasonic Water Meter with Adjustable Core Pipe Angle and Short Plastic Pipe |
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ZHAN Guolong, JIA Junxi, WANG Qiangxue, NIU Shaoqing
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1.Dayu Water-saving (Tianjin) Co. Ltd., Tianjin Key Laboratory of Water-saving Irrigation Equipment Company,
Tianjin 301712, China; 2.Tianjin City Dayu Water-saving Irrigation Technology Research Institute, Tianjin 301712, China
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| Abstract: |
| 【Objective】This paper presents a new ultrasonic water meter for use in farmland irrigation management. It is waterproof, efficient and weather resistance. 【Method】We study the modified materials of ultrasonic water meter transducer and the sealing structure by combining material modification with new water meter structure design.【Result】①Using the adjustable angle transducer structure and the smooth inner cavity, the flow is stable. It reduces the impact of scaling at the bottom of the meter on the accuracy of the ultrasonic water meter and adapts to different installation conditions. ②A mechanical sealing structure is designed to resolve the problem that data measured from the traditional glue-sealed water meter is less repeatable for maintenance and utilization. It improves the service life, pressure stability and sealing performance of the water meter. ③The length of the ultrasonic water meter is significantly reduced by using the 80 mm short tube. Glass fiber plus nylon 66 process formula plasticizing production can greatly reduce the weight of the water meter, improve its weathering-resistance and production efficiency. 【Conclusion】A new type of ultrasonic water meter with improved structure and material was developed. According to the “Drinking cold water Meter and hot Water Meter” standard (GB/T 778.4—2018), the accuracy of the water meter reached Level 1. It improves the reliability, weathering-resistance, installation convenience, while reducing production costs, both at significant level. |
| Key words: ultrasonic water meter; adjustable angle transducer; mechanical seal |
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