Force balanced impeller flow meter for mass flow rate control
    91.
    发明公开
    Force balanced impeller flow meter for mass flow rate control 审中-公开
    KraftausgeglichenesFlügelraddurchflussmessgerätzur Massenflussratenregelung

    公开(公告)号:EP2028455A2

    公开(公告)日:2009-02-25

    申请号:EP08012769.9

    申请日:2008-07-15

    IPC分类号: G01F1/28 G01F1/78

    CPC分类号: G01F1/28 G01F1/78

    摘要: A force balanced mass flow meter is disclosed that includes a cylindrical sensor housing having an interior bore, an impeller body supported for axial rotation within the interior bore of the sensor housing , and including structure for converting fluid inertia into flow induced torque when fluid flows relative to the impeller body, a proximity sensor for measuring a rotation angle of the impeller body relative to the sensor housing, an electromagnet for generating a magnetic field about the sensor housing to prevent rotation of the impeller body, electronics for determining electrical values from the proximity sensor when fluid flows relative to the impeller body and a controller for controlling current supplied to the electromagnet in response to electrical values determined from the proximity sensor, to generate a magnetic field sufficient to prevent impeller rotation.

    摘要翻译: 公开了一种力平衡质量流量计,其包括具有内孔的圆柱形传感器壳体,被支撑用于在传感器壳体的内孔内轴向旋转的叶轮体,并且包括当流体相对流动时将流体惯性转换为流动感应扭矩的结构 到叶轮本体,用于测量叶轮本体相对于传感器壳体的旋转角度的接近传感器,用于在传感器壳体周围产生磁场以防止叶轮本体旋转的电磁体,用于确定来自接近的电气值的电子装置 当流体相对于叶轮本体流动时,传感器和控制器,用于响应于从接近传感器确定的电值来控制供应给电磁体的电流,以产生足以防止叶轮旋转的磁场。

    Method and device for determining the hydraulic flow rate in a pump
    92.
    发明授权
    Method and device for determining the hydraulic flow rate in a pump 有权
    的方法和装置,用于确定在泵液压流量

    公开(公告)号:EP1512949B1

    公开(公告)日:2007-01-03

    申请号:EP03425571.1

    申请日:2003-09-04

    发明人: Marioni, Elio

    IPC分类号: G01F1/78 F04D15/00 G01D5/14

    摘要: The present invention relates to a method and relevant electronic device (10) for determining the hydraulic flow rate in a pump driven by a synchronous electric motor (12), said motor (12) being of the type comprising a rotor (14), equipped with a permanent magnet, which is rotation-driven by the electromagnetic field generated by a stator (16) equipped with pole pieces (18) with relevant windings. The method comprises an indirect measuring of the flow rate through the following steps of: acquiring at least one pump operation variable; comparing the value of said variable with a predetermined correlation table to hydraulic flow rate values and determining a corresponding flow rate value.

    FLOW METER
    93.
    发明公开
    FLOW METER 审中-公开
    DURCHFLUSSMESSER

    公开(公告)号:EP1281049A4

    公开(公告)日:2006-10-25

    申请号:EP01928185

    申请日:2001-05-07

    申请人: NMF LTD

    发明人: NATAPOV VLADIMIR

    CPC分类号: G01F1/28 G01F1/24

    摘要: Magnetic flow meters is suggested, which employs a floating member, made of magnetically responsive material and residing within a tubular conduit, through which the fluid flows. The flow meter is provided with a means for producing magnetic field in the conduit and generating a response signal upon displacement of the float member caused by the flowing fluid. Flow rate value is obtained by processing the response signal and comparing it with a calibration curve.

    摘要翻译: 建议使用磁性流量计,该磁性流量计采用由磁性响应材料制成并位于管状导管内的浮动构件,流体流过该管状导管。 流量计设置有用于在导管中产生磁场并且在由流动的流体引起的浮子部件的位移时产生响应信号的装置。 通过处理响应信号并将其与校准曲线进行比较来获得流量值。

    Method and device for determining the hydraulic flow rate in a pump
    94.
    发明公开
    Method and device for determining the hydraulic flow rate in a pump 有权
    埃菲尔和Vorrichtung zur Bestimmung des hydraulischen Durchflusses在einer Pumpe

    公开(公告)号:EP1512949A1

    公开(公告)日:2005-03-09

    申请号:EP03425571.1

    申请日:2003-09-04

    发明人: Marioni, Elio

    IPC分类号: G01F1/78 F04D15/00 G01D5/14

    摘要: The present invention relates to a method and relevant electronic device (10) for determining the hydraulic flow rate in a pump driven by a synchronous electric motor (12), said motor (12) being of the type comprising a rotor (14), equipped with a permanent magnet, which is rotation-driven by the electromagnetic field generated by a stator (16) equipped with pole pieces (18) with relevant windings. The method comprises an indirect measuring of the flow rate through the following steps of:

    acquiring at least one pump operation variable;
    comparing the value of said variable with a predetermined correlation table to hydraulic flow rate values and determining a corresponding flow rate value.

    摘要翻译: 本发明涉及一种用于确定由同步电动机(12)驱动的泵中的液压流量的方法和相关的电子装置(10),所述电机(12)是包括转子(14)的类型,所述转子装备有 具有由配备有相关绕组的极片(18)的定子(16)产生的电磁场旋转驱动的永磁体。 该方法包括通过以下步骤间接测量流量:获取至少一个泵操作变量; 将所述变量的值与预定的相关性表进行比较,以确定相应的流量值。

    Vorrichtung zur Bestimmung des Luftmassenstromes
    95.
    发明公开
    Vorrichtung zur Bestimmung des Luftmassenstromes 失效
    一种用于确定空气质量流

    公开(公告)号:EP0751378A2

    公开(公告)日:1997-01-02

    申请号:EP96102870.1

    申请日:1996-02-27

    IPC分类号: G01F1/78

    CPC分类号: G01F1/698 G01F1/684 G01F1/69

    摘要: 2.1
    Bei einer derartigen Vorrichtung tritt ein Fehler auf, der darauf beruht, daß die Vorrichtung auch die Masse der infolge der Pulsation zurückströmenden Luft ermittelt.
    2.2
    Hiergegen weist die neue Vorrichtung die Merkmale auf, daß auf dem Träger (2) ein zweiter Massenstromsensor (4) in Luftströmungsrichtung hinter dem ersten angeordnet ist, wobei jeder Massenstromsensor (3, 4) in einer Brückenschaltung mit dem Ausgangsstrom eines Regelverstärkers (14, 15) beaufschlagt ist und in jeweils einem Brückenzweig Temperatursensoren (9, 10) angeordnet sind, die auf einem weiteren Träger (8) angeordnet und der Luftströmung ausgesetzt sind, der mit Abstand zum ersten Träger (2) angeordnet ist, daß die an den Eingangsanschlüssen (6) der beiden Massenstromsensoren (3, 4) anliegenden Spannungen U M1 , U M2 einer elektronischen Schaltung (16) zugeführt werden und in dieser nach der Formel U A = U M1 + K (U M1 - U M2 ) U M2 umgeformt werden, wobei der Wert U A das Ausgangssignal der Vorrichtung für den Luftmassendurchsatz und K ein Anpassungsfaktor ist.
    2.3
    Hierdurch wird bei verringertem Bauteileaufwand eine Kompensation des durch Pulsation verursachten Meßfehlers erreicht.
    Damit ist die Vorrichtung für eine Verwendung bei Brennkraftmaschinen geeignet.

    摘要翻译: 2.1在这样的装置中,发生错误时,这是​​基于该装置还确定的回流的质量由于空气的脉动。 2.2在此,新的设备具有这样的载体(2)上,第二质量流量传感器(4)被所述第一后面布置在空气流动方向上的特点,各质量流量传感器(3,4)(在与伺服放大器14的输出电流的电桥电路, 15)被施加,并且(在一个相应的桥接分支,温度传感器9,10)被布置,设置(另一个载波8)上并暴露于空气流中,距离(对于第一载体2)被布置为使得在输入端子 (6)在两个质量流量传感器(3,4)施加的电压UM1,UM2被馈送到电子电路(16),并且在根据式UA = UM1 + K(UM1 - UM2)UM2被变换,其中,所述值UA,输出信号 用于空气质量产出和K的设备是一个适应因子。 2.3这是在减少元件数量达到引起脉动的测定误差的补偿。 因此,用于在内燃机中使用的装置是合适的。

    FLOW METER
    96.
    发明授权
    FLOW METER 失效
    流量计。

    公开(公告)号:EP0292570B1

    公开(公告)日:1995-05-10

    申请号:EP87907987.9

    申请日:1987-12-08

    IPC分类号: G01F1/78

    摘要: In this flow meter, a detector (5) is fitted slidably in a cylindrical chamber (3a) in a meter body (2), and a fluid is introduced at a predermined angle from introduction passages (17) into the interior of this detector (5), the fluid introduced into the detector (5) being discharged at a predetermined angle to the interior of the meter body (2) through discharge passages (13). A force generated by a variation in momentum of the fluid is applied to the detector (5), and this force is detected by a load measuring instrument (6) and thereby momentarily determines a mass flow rate of the fluid. Thus, a variation in momentum is generated in the fluid by the introduction passages (17) and discharge passages (13), and the force produced by the momentum variation is applied to the detector (5), the force applied to the detector (5) being detected by the load measuring instrument (6). Accordingly, the mass flow rate of a cavitation-generating fluid and a bubble-containing fluid can be measured accurately without being influenced by variations in viscosity thereof resulting from variations in temperature.

    Mass flow sensor having wide dynamic range
    100.
    发明公开
    Mass flow sensor having wide dynamic range 失效
    Massen-Strömungssensormit breitem dynamischen Bereich。

    公开(公告)号:EP0453720A2

    公开(公告)日:1991-10-30

    申请号:EP91102040.2

    申请日:1991-02-13

    IPC分类号: G01F1/68 G01F1/78 G01F1/74

    CPC分类号: G01F1/6847 G01N2030/324

    摘要: A method and apparatus for sensing the mass flow of a fluid and for generating an output signal representative of the sensed mass flow are shown to include a conduit formed from resistive material, a voltage source connected to a first point on the conduit, for providing a voltage to the first point in response to a control signal, a differential amplifier wherein the output of the amplifier is representative of the difference in voltage between a second point on the conduit and a third point on the conduit, and a controller for generating the control signal so that the voltage provided to the first point is regulated in relation to the flow of fluid through the conduit. In an especially preferred embodiment the resistive material is Nickel-52. In a further embodiment, the controller generates the control signal so that the voltage applied to the first point is regulated to maintain the average resistance of the conduit at a desired value. In one embodiment, the desired value is a constant value. In another embodiment, the controller generates the control signal so that the voltage applied to the first point is maintained at a desired value. In this last embodiment, it is preferred to compensate the output signal to account for the cooling of the conduit as the fluid passes therethrough.

    摘要翻译: 用于感测流体的质量流量和用于产生表示感测质量流量的输出信号的方法和装置被示出为包括由电阻材料形成的导管,电压源连接到导管上的第一点,用于提供 响应于控制信号的第一点的电压;差分放大器,其中放大器的输出代表导管上的第二点和导管上的第三点之间的电压差,以及用于产生控制的控制器 信号,使得提供给第一点的电压相对于通过导管的流体流量被调节。 在特别优选的实施例中,电阻材料为镍-52。 在另一实施例中,控制器产生控制信号,使得施加到第一点的电压被调节以将导管的平均电阻保持在期望值。 在一个实施例中,期望值是恒定值。 在另一个实施例中,控制器产生控制信号,使得施加到第一点的电压保持在期望值。 在该最后一个实施例中,优选的是补偿输出信号以解释当流体通过其时管道的冷却。