基于摩擦纳米发电机的耐高温井下振动传感器研制  

Development of a high temperature resistant downhole vibration sensor based on the triboelectric nanogenerator

作　　者：张德龙 郭强 吴川[2] 周清 杨鹏 ZHANG Delong;GUO Qiang;WU Chuan;ZHOU Qing;YANG Peng(Beijing Institute of Exploration Engineering,Beijing 100083,China;Faculty of Mechanical and Electronic Information,China University of Geosciences(Wuhan),Wuhan Hubei 430074,China;Faculty of Engineering and Technology,China University of Geosciences(Beijing),Beijing 100083,China)

机构地区：[1]北京探矿工程研究所,北京100083 [2]中国地质大学(武汉)机械与电子信息学院,湖北武汉430074 [3]中国地质大学(北京)工程技术学院,北京100083

出　　处：《钻探工程》2022年第1期120-127,共8页Drilling Engineering

基　　金：国家自然科学基金项目“涡轮取心钻进钻具径向振动特征研究”(编号:41802197);自然资源部深部地质钻探技术重点实验室开放基金资助(编号:KF202103)。

摘　　要：过激的振动频率将损坏钻具、影响效率、甚至造成井下事故,因此有必要对井下钻具的振动频率进行实时测量。本文基于摩擦纳米发电机提出了一种耐高温的井下振动传感器,该传感器不仅具有振动测量功能,也具有发电功能。当该传感器测量振动频率时,试验显示其测量范围为0~8 Hz,测量误差<4%,信噪比高,抗干扰能力强,且输出信号幅值与传感器和振动源的距离成反比。当该传感器用于发电时,试验显示振动频率越高其发电量越大,其在8 Hz工况下的输出电压、输出电流和输出功率分别为70 V、12×10^(-7) A和4.2×10^(-5) W,展示出了其作为井下分布式发电机的潜能。此外,该传感器可在温度<180℃以及相对湿度<90%的环境下正常使用,具有很强的适应性。Excessive vibration frequency will damage drilling tools,affect efficiency and even cause downhole accidents,so it is necessary to measure the vibration frequency of downhole drilling tools in real time.In this paper,a high temperature resistant downhole vibration sensor based on the triboelectric nanogenerator is proposed.The sensor has not only vibration measurement function,but also power generation function.When the sensor measured the vibration frequency,the test showed that the measurement range was 0~8Hz,the measurement error was less than 4%,the signal/noise ratio was high,the anti‑interference ability was strong,and the output signal amplitude was inversely proportional to the distance between the sensor and the vibration source.When the sensor was used for power generation,the test showed that the higher the vibration frequency,the greater the power generation.Its output voltage,output current and output power at 8Hz were 70V,12×10^(-7)A and 4.2×10^(-5)W,respectively,demonstrating its potential as a downhole distributed generator.In addition,the sensor can be used at temperature less than 180℃and relative humidity less than 90%,exhibiting strong adaptability.

关 键 词：振动传感器 摩擦纳米发电机 高温井 振动频率 自供电 

分 类 号：P634[天文地球—地质矿产勘探]