摘要
针对基于工业物联网的管道流量实时监测存在供电困难的问题,提出了一种具有能量采集和无线通信能力的锥形转子叶片式管道流量计。首先,所提流量计的关键部件为一个四叶片转子,通过外围嵌入永磁体的转子旋转,将水流势能转换为电能,并给出了工作原理分析和发电效率计算方法;然后,为了进一步提高发电性能,在转子前端安装一个锥体(锥形转子),以产生高速水流并导向附近的叶片,并通过流体模拟分析了锥体的影响。其次,设计了对应的物联网控制单元,利用转子旋转产生的电能来检测转子的转速,并与互联网服务器进行无线通信。最后,通过实验对该流量计发电性能和测量精度进行了评估。研究结果表明,装有锥体的转子叶片前后的压力差明显大于没有锥体的转子。随着锥体直径的增大,转子产生的功率和压力差都会增大,且最高发电效率为0.074。通过测量的转速可获得流量,且满量程精度为1.2%。当流量大于0.6×10-3 m 3/s时,流量计的输出功率大于10 mW,足以实现长期的无线流量监测。
Aiming at the difficulty of power supply in real-time monitoring of pipeline flow based on industrial internet of things,a conical rotor vane pipeline flowmeter with energy collection and wireless communication capability was proposed.Firstly,the key component of the proposed flowmeter was a four-blade rotor,and the potential energy of water flow was converted into electric energy by the rotation of the rotor with permanent magnets embedded in the periphery,and the working principle analysis and power generation efficiency calculation method were given.Then,in order to further improve the power generation performance,a cone(conical rotor)was installed at the front end of the rotor to generate high-speed water flow and guide it to the nearby blades,and the influence of the cone was analyzed by fluid simulation.Secondly,the corresponding control unit of internet of things was designed,which used the electric energy generated by the rotor rotation to detect the rotor speed and communicate wirelessly with the internet server.Finally,the power generation performance and measurement accuracy were evaluated through experi-ments.The results show that the pressure difference before and after the rotor blade with cone is obviously greater than that without cone.With the increase of cone diameter,the power and pressure difference generated by the rotor will increase,and the highest power generation efficiency is 0.074.The flow rate can be obtained by measuring the rotational speed,and the full-scale accuracy is 1.2%.When the flow rate is greater than 0.6×10-3 m 3/s,the output power of the flowmeter is greater than 10 mW,which is enough to realize long-term wireless flow monitoring.
作者
孔佐君
杨金锋
KONG Zuojun;YANG Jinfeng(Department of Automotive Engineering,Qiannan Polytechnic for Nationalities,Duyun 558000,China;School of Mechanical Engineering,Guizhou Institute of Technology,Guiyang 550003,China)
出处
《现代制造工程》
CSCD
北大核心
2024年第5期153-160,共8页
Modern Manufacturing Engineering
基金
贵州省基础研究计划项目(黔科合基础-ZK[2022]一般781)
黔南民族职业技术学院科研项目(qnzyky-2020-15)。
关键词
工业物联网
叶片式管道流量计
能量采集
锥形转子
发电效率
internet of things
vane pipeline flowmeter
energy collection
conical rotor
generating efficiency
作者简介
孔佐君,硕士,讲师,主要从事机电工程、物联网技术方面的研究工作。E-mail:uq0385@163.com。
