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    • 3. 发明授权
    • Acoustic liquid dispensing apparatus
    • 声液分配装置
    • US08171798B2
    • 2012-05-08
    • US12197985
    • 2008-08-25
    • Michael R. Van TuylJames Chiao
    • Michael R. Van TuylJames Chiao
    • G01H5/00
    • G01N29/343G01N9/24G01N11/10G01N29/024G01N29/028G01N29/032G01N29/221G01N29/222G01N2291/02809G01N2291/02818G01N2291/02836G01N2291/02881G01N2291/044
    • A liquid dispensing apparatus for dispensing droplets of a liquid, and methods for measuring various fluid parameters of the liquid are described. The liquid dispensing apparatus comprises a container having a chamber for holding a liquid. An orifice is positioned at an end of the chamber for dispensing droplets of the liquid, the orifice being configured to retain the liquid in the container if the container is positioned with the orifice facing in a downward direction. An acoustic transducer means is at least partially positioned in the chamber for periodically propagating a focused acoustic beam toward the orifice and through at least some of the liquid while the liquid is contained in the chamber, with the focused acoustic beam being capable of causing a droplet of the liquid to be ejected from the orifice when a free surface of the liquid is within the depth of field of the acoustic transducer means. Fluid parameters that can be measured include the sound velocity in the liquid, liquid level and liquid concentration, liquid acoustic impedance, liquid density ultrasonic attenuation and ultrasonic viscosity.
    • 描述了用于分配液体的液滴的液体分配装置以及用于测量液体的各种流体参数的方法。 液体分配装置包括具有用于保持液体的室的容器。 孔口位于腔室的端部,用于分配液体的液滴,如果容器定位成孔口朝向下方的方向,孔口被配置成将液体保持在容器中。 声学换能器装置至少部分地定位在腔室中,用于在聚焦的声束能够引起液滴时,将聚焦的声束周期性地传播到孔口并通过至少一些液体,同时液体被容纳在腔室中 当液体的自由表面在声换能器装置的深度范围内时,从喷嘴喷射的液体。 可以测量的流体参数包括液体中的声速,液位和液体浓度,液体声阻抗,液体密度超声衰减和超声波粘度。
    • 7. 发明申请
    • WIDE BEAM CLAMP-ON ULTRASONIC DENSITOMETER
    • 宽光束钳超声波传感器
    • US20040149013A1
    • 2004-08-05
    • US10356194
    • 2003-01-31
    • Joseph BaumoelDouglas Baumoel
    • G01N009/00
    • G01N9/24G01N29/024G01N29/028G01N29/30G01N2291/02818
    • A method for determining the density of a fluid in a pipe. The method includes determining a first, second, and third reference reading of a pipe using a transmitter transducer, a receiver transducer, and a primary receiver transducer. The first reference reading is determined when the pipe is empty. The second reference reading is determined when the pipe contains a reference liquid of known sonic impedance. The third reference reading is determined when the pipe contains an unknown liquid. The liquid sonic propagation velocity of the unknown liquid is measured. The relationship of an impedance of the unknown liquid in relation to the impedance of the reference liquid is determined. Finally, the density of the unknown liquid is determined using the determined relationship of the unknown impedance to the known impedance of the reference liquid divided by the measured liquid sonic propagation velocity of the unknown liquid.
    • 一种用于确定管道中的流体密度的方法。 该方法包括使用发射器换能器,接收器换能器和主接收换能器来确定管道的第一,第二和第三参考读数。 当管道为空时,确定第一个参考读数。 当管道包含已知声音阻抗的参考液体时,确定第二参考读数。 当管道含有未知液体时,确定第三个参考读数。 测量未知液体的液体声速传播速度。 确定未知液体的阻抗相对于参考液体的阻抗的关系。 最后,使用未知阻抗与参考液体已知阻抗的确定关系除以未知液体的测量液体声速传播速度来确定未知液体的密度。