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    Balance bar for a coriolis flowmeter
    1.
    发明授权
    Balance bar for a coriolis flowmeter 有权
    科里奥利流量计的平衡杆

    公开(公告)号：US06354154B1

    公开(公告)日：2002-03-12

    申请号：US09345078

    申请日：1999-06-30

    申请人： Craig Brainerd Van Cleve ,  Gregory Treat Lanham ,  Robert Barclay Garnett ,  Curtis John Ollila ,  Rachael Esther Cohen

    发明人： Craig Brainerd Van Cleve ,  Gregory Treat Lanham ,  Robert Barclay Garnett ,  Curtis John Ollila ,  Rachael Esther Cohen

    IPC分类号： G01F184

    CPC分类号： G01F1/84 ,  G01F1/8409 ,  G01F1/8413 ,  G01F1/8418 ,  G01F1/849 ,  Y10T29/49288

    摘要： A balance bar for a straight tube Coriolis flowmeter. The balance bar is preferably manufactured by process that provides an increased number of flowmeter elements integral to the balance bar. These integral elements comprise: brace bars at each end of the balance bar, rib elements on each side of the balance bar to raise the horizontal vibration frequency, a surface to facilitate the mounting of a driver to the balance bar and to a flow tube surrounded by the balance bar, surfaces to facilitate the mounting of sensors to the balance bar and flow tube, voids that lower the resonant frequency of the balance bar in a drive plane, and a cavity that makes the vibration amplitude of the balance bar less than that of the flow tube. These elements lower the resonant frequency of the balance bar to make the flowmeter calibration factor independent of density. The balance bar is ideally made by a casting process. The balance bar may be also fabricated by other processes including machining.

    摘要翻译： 直管科里奥利流量计的平衡杆。 平衡杆优选地通过提供增加数量的与平衡杆成一体的流量计元件的方法来制造。 这些整体元件包括：在平衡杆的每一端处的支撑杆，平衡杆的每一侧上的肋元件以提高水平振动频率，一个表面，以便于将驾驶员安装到平衡杆和流动管周围 通过平衡杆，表面便于将传感器安装到平衡杆和流动管，降低驱动平面中的平衡杆的共振频率的空隙以及使平衡杆的振幅低于该平衡杆的空腔小于 的流管。 这些元件降低了平衡杆的共振频率，使流量计校准系数与密度无关。 平衡杆理想地由铸造工艺制成。 平衡杆也可以通过包括加工在内的其它工艺来制造。

    Balance bar for a coriolis flowmeter
    2.
    发明授权
    Balance bar for a coriolis flowmeter 有权
    科里奥利流量计的平衡杆

    公开(公告)号：US06386048B2

    公开(公告)日：2002-05-14

    申请号：US09916793

    申请日：2001-07-27

    申请人： Craig Brainerd Van Cleve ,  Gregory Treat Lanham ,  Robert Barclay Garnett ,  Curtis John Ollila ,  Rachael Esther Cohen

    发明人： Craig Brainerd Van Cleve ,  Gregory Treat Lanham ,  Robert Barclay Garnett ,  Curtis John Ollila ,  Rachael Esther Cohen

    IPC分类号： G01F166

    CPC分类号： G01F1/84 ,  G01F1/8409 ,  G01F1/8413 ,  G01F1/8418 ,  G01F1/849 ,  Y10T29/49288

    摘要： A balance bar for a straight tube Coriolis flowmeter. The balance bar is preferably manufactured by process that provides an increased number of flowmeter elements integral to the balance bar. These integral elements comprise: brace bars at each end of the balance bar, rib elements on each side of the balance bar to raise the horizontal vibration frequency, a surface to facilitate the mounting of a driver to the balance bar and to a flow tube surrounded by the balance bar, surfaces to facilitate the mounting of sensors to the balance bar and flow tube, voids that lower the resonant frequency of the balance bar in a drive plane, and a cavity that makes the vibration amplitude of the balance bar less than that of the flow tube. These elements lower the resonant frequency of the balance bar to make the flowmeter calibration factor independent of density. The balance bar is ideally made by a casting process. The balance bar may also be fabricated by other processes including machining.

    摘要翻译： 直管科里奥利流量计的平衡杆。 平衡杆优选地通过提供增加数量的与平衡杆成一体的流量计元件的方法来制造。 这些整体元件包括：在平衡杆的每一端处的支撑杆，平衡杆的每一侧上的肋元件以提高水平振动频率，一个表面，以便于将驾驶员安装到平衡杆和流动管周围 通过平衡杆，表面便于将传感器安装到平衡杆和流动管，降低驱动平面中的平衡杆的共振频率的空隙以及使平衡杆的振幅低于该平衡杆的空腔小于 的流管。 这些元件降低了平衡杆的共振频率，使流量计校准系数与密度无关。 平衡杆理想地由铸造工艺制成。 平衡杆也可以通过包括加工在内的其它工艺来制造。

    Apparatus for connecting a coriolis flowmeter flow tube to a flowmeter case
    3.
    发明授权
    Apparatus for connecting a coriolis flowmeter flow tube to a flowmeter case 有权
    用于将科里奥利流量计流量管连接到流量计箱的装置

    公开(公告)号：US06343517B1

    公开(公告)日：2002-02-05

    申请号：US09345075

    申请日：1999-06-30

    申请人： Craig Brainerd Van Cleve ,  Gregory Treat Lanham ,  Curtis John Ollila ,  Ernest Dale Lister

    发明人： Craig Brainerd Van Cleve ,  Gregory Treat Lanham ,  Curtis John Ollila ,  Ernest Dale Lister

    IPC分类号： G01F184

    CPC分类号： G01F1/8409 ,  G01F1/8413 ,  G01F1/8418 ,  G01F1/849 ,  Y10T29/49002 ,  Y10T29/4902 ,  Y10T29/494 ,  Y10T29/49401 ,  Y10T29/49428

    摘要： A flowmeter having a case enclosing a single straight tube surrounded by a balance bar. The balance bar ends are coupled by means of a brace bar to the flow tube as well as by case connect links to the inner wall of the case. The flow tube ends are coupled to end flanges by means of a raised element having a center opening for sealably receiving the flow tube terminus. The flow tube projects beyond the case end and is sealably coupled to a cone connect element in the case end. A void is defined by the space between the flow tube outer surface and the inner surface of the cone connect element and the end flanges to minimize the surface area of the flow tube that is affected by the weld between the case end and raised element of the end flanges. The case connect links contain out of plane bends to accommodate a change in the effective diameter of the case and the balance bar with respect to each other due to changing thermal conditions. Another embodiment of the invention includes a flowmeter without the end flanges. The flow tube ends project beyond the case ends while being sealably coupled to the cone connect element in the case ends. The flowmeter may be manufactured, tested, and balanced and stored without a flange. The flowmeter is stored in this condition until its commercial use is imminent at which time it is fitted with the appropriate end flange required by the end user.

    摘要翻译： 一种流量计，其具有包围由平衡杆包围的单个直管的壳体。 平衡杆端部通过支撑杆连接到流动管以及通过壳体连接到壳体的内壁的情况。 流管端部通过具有中心开口的凸起元件联接到端部凸缘，用于密封地接收流动管末端。 流动管突出超过壳体端部并且在壳体端部中可密封地联接到锥形连接元件。 通过流管外表面和锥形连接元件和端部凸缘的内表面之间的空间来限定空隙，以使流管的表面积最小化，其受到壳体端部和凸起元件之间的焊接的影响 端部法兰。 壳体连接链路包含超出平面弯曲以适应壳体和平衡杆相对于彼此的有效直径的变化，这是由于热条件的变化。 本发明的另一个实施例包括没有端部凸缘的流量计。 流动管端部突出超过壳体端部，同时在壳体端部中可密封地联接到锥形连接元件。 流量计可以被制造，测试和平衡，并没有法兰存储。 流量计以这种状态存储，直到其商业使用即将到来，在那时它装配有终端用户所需的适当的端部法兰。

    Method of forming a coriolis flowmeter
    4.
    发明授权
    Method of forming a coriolis flowmeter 有权
    形成科里奥利流量计的方法

    公开(公告)号：US06718615B2

    公开(公告)日：2004-04-13

    申请号：US09947810

    申请日：2001-09-05

    申请人： Craig Brainerd Van Cleve ,  Gregory Treat Lanham ,  Curtis John Ollila ,  Ernest Dale Lister

    发明人： Craig Brainerd Van Cleve ,  Gregory Treat Lanham ,  Curtis John Ollila ,  Ernest Dale Lister

    IPC分类号： H01S400

    CPC分类号： G01F1/8409 ,  G01F1/8413 ,  G01F1/8418 ,  G01F1/849 ,  Y10T29/49002 ,  Y10T29/4902 ,  Y10T29/494 ,  Y10T29/49401 ,  Y10T29/49428

    摘要： A method of forming a flowmeter having a case enclosing a single straight tube surrounded by a balance bar. The balance bar ends are coupled by means of a brace bar to the flow tube as well as by case connect links to the inner wall of the case. The flow tube projects beyond the case end and is sealably coupled to a cone connect element in the case end. A void is defined by the space between the flow tube outer surface and the inner surface of the cone connect element and the end flanges. The case connect links contain out of plane bends to accommodate a change in the effective diameter of the case and the balance bar with respect to each other due to changing thermal conditions.

    摘要翻译： 一种形成具有包围由平衡杆包围的单个直管的壳体的流量计的方法。 平衡杆端部通过支撑杆连接到流动管以及通过壳体连接到壳体的内壁的情况。 流动管突出超过壳体端部并且在壳体端部中可密封地联接到锥形连接元件。 空隙由流管外表面和锥形连接元件的内表面与端部凸缘之间的空间限定。 壳体连接链路包含超出平面弯曲以适应壳体和平衡杆相对于彼此的有效直径的变化，这是由于热条件的变化。

    Spring rate balancing of the flow tube and a balance bar in a straight tube Coriolis flowmeter
    5.
    发明授权
    Spring rate balancing of the flow tube and a balance bar in a straight tube Coriolis flowmeter 失效
    流量管的弹簧平衡和直管科里奥利流量计中的平衡杆

    公开(公告)号：US5979246A

    公开(公告)日：1999-11-09

    申请号：US20704

    申请日：1998-02-09

    申请人： Craig Brainerd Van Cleve ,  Gregory Treat Lanham

    发明人： Craig Brainerd Van Cleve ,  Gregory Treat Lanham

    IPC分类号： G01F1/84

    CPC分类号： G01F1/8409 ,  G01F1/8413 ,  G01F1/8418 ,  G01F1/849

    摘要： A Coriolis flowmeter having a single straight flow tube, a balance bar parallel to said flow tube, a brace bar connecting ends of the balance bar to the flow tube and to a surrounding case. Improved dynamic balance of the flowmeter is maintained in response to changes in density of the flowing material by reducing the spring function of the balance bar and/or the flow tube. This concentrates the spring function of the flowmeter in the brace bar structure. A vibrational node in the brace bar structure separates the effective spring function of the balance bar from the effective spring function of the flow tube. The vibrational node moves within the brace bar in response to materials of different densities in the flow tube at different times. This nodal movement changes the ratio of the effective balance bar spring function to that of the effective flow tube spring function to maintain improved dynamic vibrational balance of the flowmeter without involving the case mass.

    摘要翻译： 科里奥利流量计具有单个直流管，与所述流动管平行的平衡杆，将平衡杆的端部连接到流管和支撑杆的支杆。 通过减小平衡杆和/或流管的弹簧功能，可以响应于流动材料的密度变化而保持流量计的改进的动态平衡。 这将流量计的弹簧功能集中在支撑杆结构中。 支撑杆结构中的振动节点将平衡杆的有效弹簧功能与流量管的有效弹簧功能分开。 响应于流管中不同密度的材料，振动节点在支撑杆内移动。 该节点运动改变了有效平衡杆弹簧功能与有效流量管弹簧功能的比例，以保持流量计的动态振动平衡，而不涉及壳体质量。

    Straight tube Coriolis flowmeter
    6.
    发明授权
    Straight tube Coriolis flowmeter 有权
    直管科里奥利流量计

    公开(公告)号：US06327915B1

    公开(公告)日：2001-12-11

    申请号：US09343836

    申请日：1999-06-30

    申请人： Craig Brainerd Van Cleve ,  Charles Paul Stack ,  Gregory Treat Lanham

    发明人： Craig Brainerd Van Cleve ,  Charles Paul Stack ,  Gregory Treat Lanham

    IPC分类号： G01F184

    CPC分类号： G01F1/8409 ,  G01F1/8413 ,  G01F1/8418 ,  G01F1/8436 ,  G01F1/849 ,  G01N9/002

    摘要： Method and apparatus for providing compensation of mass flow rate and density for the flow tube of a single straight flow tube Coriolis flowmeter. Thermal stress compensation is provided by the use of a plurality of sensors on various portions of the flowmeter. A first sensor is coupled to the flow tube and provides information regarding the flow tube temperature. A plurality of additional sensors are connected to form a network having a two wire output. The additional sensors apply a composite signal over the two wire output of the network to meter electronics. The network signal represents the composite temperature of the flowmeter elements that can cause thermal stress on the flow tube when a temperature differential exists between the flow tube and the temperature of these plurality of elements. The additional elements include the balance bar and the flowmeter case. Sensitivity compensation is provided by the use of a novel algorithm. Density is measured in a single tube flowmeter that is calibrated using two materials of different densities by the use of density equation that has non linear components representing the deviation of the meter calibration from linear.

    摘要翻译： 用于提供单流直管科里奥利流量计的流量管的质量流量和密度补偿的方法和装置。 通过在流量计的各个部分上使用多个传感器来提供热应力补偿。 第一传感器耦合到流管并提供关于流管温度的信息。 连接多个附加传感器以形成具有双线输出的网络。 附加传感器通过网络的两线输出将复合信号应用于仪表电子设备。 网络信号表示当流量管与这些多个元件的温度之间存在温差时，流量计元件的复合温度可导致流管上的热应力。 附加元件包括平衡杆和流量计表壳。 通过使用新颖的算法提供灵敏度补偿。 密度在单管流量计中测量，该单管流量计通过使用具有表示仪表校准与线性偏差的非线性分量的密度方程式，使用两种不同密度的材料进行校准。

    Low thermal stress balance bar for a coriolis flowmeter
    7.
    发明授权
    Low thermal stress balance bar for a coriolis flowmeter 有权
    科里奥利流量计低热应力平衡棒

    公开(公告)号：US06487917B1

    公开(公告)日：2002-12-03

    申请号：US09563026

    申请日：2000-05-02

    申请人： Craig Brainerd Van Cleve ,  Gregory Treat Lanham

    发明人： Craig Brainerd Van Cleve ,  Gregory Treat Lanham

    IPC分类号： G01F184

    CPC分类号： G01F1/8409 ,  G01F1/8418 ,  G01F1/8422 ,  G01F1/849

    摘要： A Coriolis flowmeter that uses a balance bar to allow stress in the active and inactive portions of the flow tube to be as low as possible for any thermal condition. The balance bar has a middle segment that is compliant in the axial direction so that changes in length of the balance bar ends do not impose a significant axial force on the flow lube. This ensures that the thermal stresses on the active and inactive portions of the flow tube are always equal. This state of stress equality is the lowest possible stress state for the flow lube. As a result of the axially compliant balance bar, the remaining stress in the flow tube is only a function of the differential expansion between the flow tube and the case. Balance bar expansion and contraction is eliminated and has no impact on the flow tube stress.

    摘要翻译： 科里奥利流量计使用平衡杆来允许流管的主动和非活动部分的应力尽可能低的任何热条件。 平衡杆具有沿轴向顺应的中间段，使得平衡杆端部的长度变化不会在流动润滑剂上施加显着的轴向力。 这确保了流管的主动和非活动部分的热应力总是相等的。 这种压力平衡状态是流动润滑油的最低应力状态。 作为轴向顺应平衡杆的结果，流动管中的剩余应力仅是流动管和壳体之间的差动膨胀的函数。 平衡杆膨胀和收缩被消除，并且对流管应力没有影响。