| 引用本文: | 战国隆,贾俊喜,王强学,等.可调芯管角度全塑短管超声波水表研制[J].灌溉排水学报,2022,41(7):51-56. |
| ZHAN Guolong,JIA Junxi,WANG Qiangxue,et al.可调芯管角度全塑短管超声波水表研制[J].灌溉排水学报,2022,41(7):51-56. |
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| 摘要: |
| 【目的】提高农田灌溉和供水超声波水表密封性、生产效率、耐候性等问题。【方法】采用材料改性与新型水表结构设计相结合的方法，开展了超声波水表换能器与密封结构、配方改性材料等方面的研究。【结果】①采用可调角换能器结构和平滑内腔，流场稳定，减少水表底部结垢对超声波水表精度的影响，适应不同安装条件；②设计了机械密封结构，解决了传统灌胶密封水表不可重复维修利用的难题，提高了水表使用寿命及耐压稳定性和密封性能；③采用80 mm短管型式显著减小了超声波水表长度；玻纤加尼龙66工艺配方塑化生产大幅度降低水表质量，提高了耐候性和生产效率。【结论】研制的一种新型结构和材质的超声波水表，依据《饮用冷水水表和热水水表》（GB/T 778.4—2018）进行测试，水表达到1级精度；可靠性、耐候性、安装方便程度显著提高，生产成本大幅降低。 |
| 关键词: 超声波水表；可调角换能器；机械密封 |
| 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 |
