CAJ | 학술논문

针对铝电解槽电磁场的基本原理，提出一种阳极电流非接触式测试方法即多传感器测试方法。该方法是在每个阳极导杆附近，布置多个测试磁场的传感器，通过调节传感器的组合方式，得到测试点准确的磁场，进而反推得到各阳极导杆的电流分布。建立了铝电解槽的骨架模型，对多传感器测试方法进行验证并优化。结果表明：采用3个传感器的布置方案，阳极电流的测试误差减小，误差分布范围为0.35%~0.90%；在传感器1、2的间距为13 mm，传感器1、4的间距为5 mm的特定布置方案中，阳极电流的测试误差达到最小值，平均误差不超过±0.3%；并且该方法具有安装简单、操作方便、精度高以及可实现在线连续测量等特点。
침대려전해조전자장적기본원리，제출일충양겁전류비접촉식측시방법즉다전감기측시방법。해방법시재매개양겁도간부근，포치다개측시자장적전감기，통과조절전감기적조합방식，득도측시점준학적자장，진이반추득도각양겁도간적전류분포。건립료려전해조적골가모형，대다전감기측시방법진행험증병우화。결과표명：채용3개전감기적포치방안，양겁전류적측시오차감소，오차분포범위위0.35%~0.90%；재전감기1、2적간거위13 mm，전감기1、4적간거위5 mm적특정포치방안중，양겁전류적측시오차체도최소치，평균오차불초과±0.3%；병차해방법구유안장간단、조작방편、정도고이급가실현재선련속측량등특점。
Based on the principle of electromagnetic field in aluminum reduction cell, a new non-contacting measurement of individual anode current, i.e., multi-sensor method, was put forward, which was established by placing many magnetic field sensors near each anode rod to achieve the accurate individual anode current by means of adjusting the combination mode of these sensors. Thereby, the individual anode current or anode current distribution could be obtained from the measured magnetic field values. In addition, the skeleton structure model of aluminum reduction cell was also established, which was used for verification and optimization of the method. The results show that the relative errors of the combination mode of three sensors are reduced effectively and distribute between 0.35%and 0.90%. The relative errors of the combination mode of the 13 mm spacing between sensor 1 and sensor 2 and the 5 mm spacing between sensor 1 and sensor 4 are reduced significantly and evaluated to be within ±0.3%. The test method has characteristics of simple structure, easy operation, high precision and online continuous measurement.