管道矿浆密度计的在线检测原理及其在尾砂充填中的应用

On-Line Detection Principle of Pipeline Liquid Density Meter and Its Application in Tailings Filling

针对现有管道式矿浆在线检测浓度计存在放射性或抗干扰性能差等问题,研制了一种新型谐振式管道矿浆密度计。密度计测量以流体流经管道时的振动数学模型为基础,利用仪器固有振动频率与流体流经仪器时产生的频率差异来测量流经浆液体的浓度。该矿浆密度计主要构成有:供液流过的振动管,在振动管腔体内壁上呈环绕分布的电感线圈;与电感线圈两引线端相连接的电阻和电容;电感线圈、电阻和电容构成的RLC串联谐振电路等。开发的MIMR-XZ6管道矿浆密度计用于矿浆物料密度的在线检测,其精度能满足工业应用的需要。

In view of the problems of existing radioactive or poor anti-interference performance of the pipeline slurry online detection densimeter,a new resonant pipeline slurry densimeter was developed.Based on the vibration mathematical model of fluid pipeline,this densimeter measured the difference between the vibration frequency of the instrument and the frequency of fluid flowing through the instrument to judge the concentration of the slurry liquid.The pulp densimeter is mainly composed of a vibrating tube with liquid,an inductance coil distributed around the inner wall of the vibrating tube cavity,a resistor and capacitor connected with the two lead-outs of the inductance coil,and a RLC series resonance circuit with inductance coil,resistor and capacitor,etc.The MIMR-XZ6 pipeline slurry densimeter can be used as on-line density detector of pulp materials,and its detection accuracy can meet the needs of industrial.