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    • 2. 发明授权
    • Apparatus for controlling a mass flow rate of liquid in a chemical process
    • 用于控制化学过程中液体的质量流量的装置
    • US3692048A
    • 1972-09-19
    • US3692048D
    • 1971-03-31
    • MITSUO UCHIDATADANAO IKETANINAOYUKI MITANI
    • UCHIDA MITSUOIKETANI TADANAOMITANI NAOYUKI
    • G05D11/13D06F39/00
    • G05D11/134Y10T137/7339
    • An improved apparatus for controlling a mass flow rate of liquid in a chemical process, wherein a control system for regulating a mass flow rate of liquid in a liquid passage of the process is automatically controlled in accordance with a deviation between a reference input of mass flow rate of liquid, and an average mass flow rate of liquid measured by a particularly designed measuring device. The measuring device is provided with a liquid container which is disposed in a liquid passage of the process and supported by a weighing mechanism. An opening or closing means and an automatic means for regulating the mass flow rate of liquid are mounted separately on the liquid passage at both opposed sides of the liquid container respectively, and the automatic regulating means is actuated as mentioned above. After opening or closing the opening or closing means, a weight difference Delta W of liquid contained in the liquid container is measured at two measuring instances which are separated by a time interval Delta T, then the average mass flow rate of the liquid is integrally calculated by an equation ( Delta W/ Delta T). The measuring of the liquid weight is carried out together with measuring the net weight of the liquid container by way of the weighing mechanism.
    • 一种用于控制化学过程中的液体的质量流量的改进的装置,其中用于调节该过程的液体通道中的液体的质量流量的控制系统根据质量流的参考输入之间的偏差自动控制 液体速率,以及由特别设计的测量装置测量的液体的平均质量流量。 测量装置设置有液体容器,该液体容器设置在该过程的液体通道中并由称重机构支撑。 分别在液体容器的两侧的液体通道上单独地安装有用于调节液体的质量流量的打开或关闭装置和自动装置,并且如上所述致动自动调节装置。 在打开或关闭打开或关闭装置之后,在分离了时间间隔DELTA T的两个测量实例处测量容纳在液体容器中的液体的重量差ΔTAW,然后将液体的平均质量流量整体计算 通过等式(DELTA W / DELTA T)。 液体重量的测量与通过称重机构测量液体容器的净重一起进行。