發(fā)布時間：2019-01-12 20:12

【摘要】：石油鉆機扭矩實時測量對保障工作安全和提高經(jīng)濟效益具有重要意義。針對應變式扭矩測力儀使用一段時間后精度降低問題,設(shè)計了一種壓電式扭矩測力儀。其具有體積小、量程大和穩(wěn)定性好等優(yōu)點。首先構(gòu)建了測力儀的三維模型,論述了測力儀的測量原理;然后推導了電荷放大電路輸出電壓與輸入電荷之間的關(guān)系式,設(shè)計了高輸入阻抗的電荷轉(zhuǎn)換核心電路,使輸入阻抗達到1014Ω,并給出了無線傳輸電路的具體實施方案;最后對測力儀進行了靜態(tài)標定,其非線性為1.17%,重復性為0.46%。該壓電式扭矩測力儀性能指標達到了鉆機扭矩實時監(jiān)控的要求。
[Abstract]:Real-time torque measurement of oil drilling rig is of great significance to guarantee safety and improve economic benefit. A piezoelectric torque dynamometer is designed to reduce the precision of strain torque dynamometer after a period of time. It has the advantages of small volume, large measuring range and good stability. Firstly, the three-dimensional model of the dynamometer is constructed, and the measuring principle of the dynamometer is discussed. Then the relation between the output voltage and the input charge of the charge amplifier circuit is deduced, and the charge conversion core circuit with high input impedance is designed, which makes the input impedance reach 1014 惟, and the concrete implementation scheme of the wireless transmission circuit is given. Finally, the static calibration of the dynamometer is carried out. The nonlinearity is 1.17 and the repeatability is 0.46. The performance index of the piezoelectric torque dynamometer meets the requirement of real-time torque monitoring of drilling rig.
【作者單位】： 大連理工大學機械工程學院;
【基金】：國家自然科學基金資助項目(51675084,51475078)
【分類號】：TE927

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1 周立輝;測量井下振動優(yōu)化鉆井的測力儀[J];國外石油機械;1994年02期

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本文編號：2408148