利索-全球专利检索

  1. 登录
  2. 注册

搜索结果

4 条记录 (耗时 0.02 秒)

    Gaseous fluid flow meter utilizing karman vortex street
    1.
    发明授权
    Gaseous fluid flow meter utilizing karman vortex street 失效
    采用卡曼涡街的气体流量计

    公开(公告)号：US4380934A

    公开(公告)日：1983-04-26

    申请号：US218743

    申请日：1980-12-22

    申请人： Kuniteru Okuda ,  Teruki Fukami ,  Yoshiaki Asayama ,  Shunichi Wada ,  Masami Kabuto

    发明人： Kuniteru Okuda ,  Teruki Fukami ,  Yoshiaki Asayama ,  Shunichi Wada ,  Masami Kabuto

    IPC分类号： G01F1/32 ,  G01P5/01

    CPC分类号： G01F1/3281 ,  G01P5/01

    摘要： A gaseous fluid flow meter utilizing a Karman vortex street has a conduit having opposed flat walls and through which a gaseous fluid to be measured flows, a vortex generating member disposed perpendicularly to the direction of flow of the fluid to generate the Karman vortex street downstream thereof, a vortex detector disposed on the conduit and having a transmitter in one flat wall for transmitting a continuous ultrasonic wave across the Karman vortex street and a receiver in the other flat wall positioned opposite the ultrasonic wave transmitter in a direction perpendicular to the direction of the flow of the gaseous fluid through the conduit for receiving the continuous ultrasonic wave to detect the changes in phase of the ultrasonic wave indicating the number of vortices of the Karman vortex street generated in a unit time, and a sound absorbing material on only the portion of the inner surfaces of the flat walls of the conduit around the transmitter and around the receiver and extending sufficiently far along the walls from the transmitter and receiver for preventing the generation of standing waves in front of the walls due to the reflection of the ultrasonic wave.

    摘要翻译： 利用Karman涡街的气体流体流量计具有一对具有相对平坦壁的导管，待测量的气态流体流过该涡流产生件，垂直于流体流动方向设置的涡流产生件，以在其下游产生卡曼涡街 ，设置在导管上的涡流检测器，并且在一个平坦壁中具有发射器，用于在Karman涡街上传输连续的超声波，并且在与超声波发射器相对的方向上的接收器在垂直于 气体流体通过管道流动，用于接收连续超声波，以检测表示在单位时间内产生的卡门涡街的旋涡数量的超声波的相位变化，以及仅在 发射机周围的导管的平面的内表面和接收器周围的例如 由于超声波的反射，从发射器和接收器的壁向前倾斜足够远，以防止在墙前产生驻波。

    Flow meter utilizing Karman vortex street
    2.
    发明授权
    Flow meter utilizing Karman vortex street 失效
    流量计利用卡曼涡街

    公开(公告)号：US4392385A

    公开(公告)日：1983-07-12

    申请号：US185387

    申请日：1980-09-08

    申请人： Kuniteru Okuda ,  Teruki Fukami ,  Yoshiaki Asayama ,  Shunichi Wada ,  Masami Kabuto

    发明人： Kuniteru Okuda ,  Teruki Fukami ,  Yoshiaki Asayama ,  Shunichi Wada ,  Masami Kabuto

    IPC分类号： G01F1/32 ,  G01P5/01

    CPC分类号： G01F1/3281 ,  G01P5/01

    摘要： A fluid conduit with a rectangular cross-section is divided into two parallel conduits. A vortex generating rod is disposed perpendicularly to the flow direction in one of the conduits. An ultrasonic wave is directed perpendicularly across the conduit to detect the Karman vortex streets. A sound absorbing material is located along the portion of the conduit wall where the ultrasonic waves exist for preventing the formation of standing waves.

    摘要翻译： 具有矩形横截面的流体导管分成两个平行的导管。 在一个管道中垂直于流动方向设置涡流产生杆。 超声波垂直穿过导管，以检测卡门涡街。 吸音材料位于导管壁的存在超声波的部分，以防止形成驻波。