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    Movable venturi type tube flow meter
    3.
    发明授权
    Movable venturi type tube flow meter 失效
    可移动的VENTURI型管式流量计

    公开(公告)号：US3693437A

    公开(公告)日：1972-09-26

    申请号：US3693437D

    申请日：1971-01-26

    申请人： KAMEKICHI SHIBA

    发明人： SHIBA KAMEKICHI

    IPC分类号： G01F1/38 ,  G01F1/44 ,  G01F1/00

    CPC分类号： G01F1/383 ,  G01F1/44

    摘要： A flow meter for measuring the rate of flow of a liquid regardless of the viscosity losses. The flow meter includes an axially movable Venturi tube arranged between a pair of stationary tubes coaxial with the Venturi tube and respectively feeding liquid to be measured in and out of the Venturi tube, first actuator means connected to the Venturi tube for movement therewith in axial direction during flow of liquid through the latter, second actuator means actuated by the pressure in the liquid at the inlet and outlet end of the Venturi tube, and means for determining the actual flow of liquid through the Venturi tube, which means is actuated by the first and second actuator means.

    摘要翻译： 用于测量液体流速的流量计，不管粘度损失如何。 流量计包括一个轴向可移动的文丘里管，其布置在与文丘里管同轴的一对固定管之间，并分别将待测量的待测量液体输入和输出文丘里管，第一致动器装置连接到文丘里管，用于沿轴向移动 在液体通过后者的过程中，由文丘里管入口和出口端处的液体压力致动的第二致动器装置，以及用于确定通过文丘里管的液体的实际流动的装置，该装置由第一 和第二致动器装置。

    Flow meter
    4.
    发明授权
    Flow meter 失效

    公开(公告)号：US3584508A

    公开(公告)日：1971-06-15

    申请号：US3584508D

    申请日：1968-07-08

    申请人： KAMEKICHI SHIBA

    发明人： SHIBA KAMEKICHI

    IPC分类号： G01F1/20 ,  G01J1/00

    CPC分类号： G01F1/80 ,  G01F1/206

    摘要： The flow meter of the present invention, viz, a movable U-tube flow meter of the present invention is a hydrodynamical one not based on the Bernouilli''s theorem and hence it enables the measurement of a flow rate regardless of viscosity losses. The main movable U-tube is connected to fixed inlet and outlet tubes by suitable joints and all of these parts are preferably enclosed in a sealed housing. The pressure of the fluid outside of the main movable tube is so regulated that the tube is kept in its position of zero flow rate. The flow rate is calculated from the measured values of the difference of pressure at the inlet end and the outside of the main movable tube together with the difference of pressure at the outlet end and the outside of the main movable tube, provided the sectional areas of the inlet and outlet ends and the effective areas of the joints are known.