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公开(公告)号：US5540106A
公开(公告)日：1996-07-30
申请号：US14708
申请日：1993-02-08
申请人： Hyok S. Lew , Yon S. Lew
发明人： Hyok S. Lew , Yon S. Lew
CPC分类号： G01F1/8495 , G01F1/8413 , G01F1/8436 , G01F1/8468 , G01F1/8472 , G01F1/8477 , G01F1/8481 , G01F1/8486
摘要： A method for determining mass flow rate of media moving through at least one conduit under a flexural vibration comprises analyzing two alternating electrical signals respectively representing the flexural vibration of the conduit at two different sections of the conduit, and determining the mass flow rate as a function of an independent variable generated by a ratio between two groups of various combinations of the two alternating electrical signals, which method also provides a method for determining phase angle difference between two alternating electrical signals without actually measuring the lead time or lag time between the two alternating electrical signals in the time domain.
摘要翻译： 用于确定在弯曲振动下通过至少一个导管移动的介质的质量流量的方法包括分析两个交替的电信号，分别表示导管的两个不同部分处的导管的弯曲振动，并且确定质量流量作为一个功能 由两个交替电信号的各种组合的两组之间的比率产生的独立变量，该方法还提供了一种用于确定两个交替电信号之间的相位差的方法，而不实际测量两个交替电信号之间的提前时间或滞后时间 电信号在时域。
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公开(公告)号：US5509311A
公开(公告)日：1996-04-23
申请号：US283566
申请日：1994-08-01
申请人： Hyok S. Lew
发明人： Hyok S. Lew
IPC分类号： G01F1/32
CPC分类号： G01F1/3209 , G01F1/3254 , G01F1/3263
摘要： A vortex flowmeter employs a differential pressure transducer converting an oscillation in a differential pressure to an alternating electrical signal, which differential pressure transducer is dynamically isolated from a structure including a flow passage in a relationship preventing the transmission of the mechanical vibrations of the structure including the flow passage to the differential pressure transducer, and receives two fluid pressures respectively existing at the two opposite cylindrical sides of a vortex generating bluff body disposed across the flow passage respectively through two small diameter tubings having a low stiffness, wherein the velocity of fluid moving through the flow passage is determined as a function of the frequency of the alternating electrical signal generated by the differential pressure transducer.
摘要翻译： 涡街流量计采用将压差振荡器转换为交流电信号的差压换能器，该差压变换器与包括流路的结构在动态上隔离，该关系阻止了结构的机械振动的传递，包括 并且接收分别存在于横跨流动通道布置的涡流产生非流线形体的两个相对的圆柱形侧面处的两个流体压力，分别通过具有低刚度的两个小直径管道，其中流体流过的速度 流量通过由压差传感器产生的交流电信号的频率来确定。
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公开(公告)号：US5504789A
公开(公告)日：1996-04-02
申请号：US91269
申请日：1993-07-15
申请人： Hyok S. Lew , Yon S. Lew , Yon K. Lew
发明人： Hyok S. Lew , Yon S. Lew , Yon K. Lew
CPC分类号： G01F1/8436 , G01F1/588 , G01F1/60 , G01F1/8486 , G01R25/08
摘要： A phase angle difference between two alternating electrical signals is determined as a function of a ratio of a differential combination of two different numbers of pulse counts to an additive combination of the two different numbers of pulse counts, wherein the first of the two different numbers of pulse counts is obtained by counting a series of electric pulses generated by an electrical pulse generator in a time interval between an occurrence of zero value of the leading signal of the two alternating electrical signal and (i-1)th occurrence of zero value of the trailing signal of the two alternating electrical signals occurring after the occurrence of zero value of the leading signal, and the second of the two different numbers of pulse counts is obtained by counting the pulses in an time interval between an occurrence of zero value of the trailing signal and the (j)th occurrence of zero value of the leading signal occurring after the occurrence of zero value of the trailing signal, wherein (i) and (j) are integers; and the phase angle so determined is used to determine the mass flow rate of media by using a convective inertia force flowmeter.
摘要翻译： 两个交替电信号之间的相位角差被确定为两个不同数量的脉冲计数的差分组合与两个不同数量的脉冲计数的加法组合的比率的函数，其中两个不同数目的脉冲计数中的第一个 通过在两个交流电信号的前导信号的零值的出现与第（i-1）次的零值的出现之间的时间间隔内对由电脉冲发生器产生的一系列电脉冲进行计数来获得脉冲计数， 通过在引导信号的零值出现之后发生的两个交替电信号的尾部信号，以及两个不同数量的脉冲计数中的第二个，通过在后沿的零值的出现之间的时间间隔中对脉冲进行计数来获得 信号和发生在尾随信号的零值出现之后的前导信号的零值的第（j）次出现， 其中（i）和（j）是整数; 并且如此确定的相位角用于通过使用对流惯性力流量计来确定介质的质量流量。
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公开(公告)号：US5485755A
公开(公告)日：1996-01-23
申请号：US177382
申请日：1994-01-05
申请人： Hyok S. Lew
发明人： Hyok S. Lew
IPC分类号： G01F1/84
CPC分类号： G01F1/8413 , G01F1/8422 , G01F1/8436 , G01F1/8468 , G01F1/8477 , G01F1/8481
摘要： An inertia force or Coriolis force mass flowmeter comprises a pair of conduits having a substantially identical configuration disposed in a parallel and superimposing relationship with a space therebetween and flexurally vibrated relative to one another; wherein each of the pair of conduits has two end sections disposed at a close proximity to one another in a side-by-side relationship and secured to a common region of a supporting structure, and a curved midsection of a loop angle approximately equal to 360 degrees connecting the two end sections of the conduit to one another, which inertia force or Coriolis force mass flowmeter determines mass flow rate of media moving through at least one of the pair of conduits as a function of a phrase angle difference between two alternating electrical signals representing the relative flexural vibration between the pair of conduits respectively at two different sections of the combination of the pair of conduits.
摘要翻译： 惯性力或科里奥利力质量流量计包括一对导管，其具有基本上相同的构造，其与它们之间的空间以平行和重叠的关系设置，并相对于彼此弯曲地振动; 其中所述一对导管中的每一个具有以并排关系彼此靠近设置的两个端部部分，并且固定到支撑结构的公共区域，并且具有大约等于360°的环形角度的弯曲中部 这种惯性力或科里奥利力质量流量计确定了通过两对管道中的至少一个导管移动的介质的质量流量，这是两个交替电信号之间的短语角度差的函数 分别代表一对导管的组合的两个不同部分处的一对导管之间的相对弯曲振动。
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公开(公告)号：US5456121A
公开(公告)日：1995-10-10
申请号：US137560
申请日：1993-10-18
申请人： Hyok S. Lew , Yon S. Lew , Yon K. Lew
发明人： Hyok S. Lew , Yon S. Lew , Yon K. Lew
摘要： A pivotable vane flowmeter comprises at least one pivotable vane disposed pivotably about a pivot axis parallel to the the direction of fluid flow and experiencing a fluid dynamic torque created by the fluid flow, a bias spring or counter-weight providing a bias torque counter-acting the fluid dynamic torque, and a rotary position sensor detecting the rotary position of the pivotable vane about the pivot axis, wherein the dynamic pressure of the fluid flow is determined as a function of the rotary position of the pivotable vane about the pivot axis, and the time rate of the fluid flow is determined from a combination of the dynamic pressure of the fluid flow and the known or measured value of the fluid density, or from another combination of the dynamic pressure of the fluid flow and the frequency of rotation of a rotating turbine or propeller installed in conjunction with the pivotable vane flowmeter.
摘要翻译： 可枢转叶片流量计包括至少一个可枢转的叶片，该枢转叶片围绕平行于流体流动方向的枢转轴线可枢转地旋转，并且经历由流体流动产生的流体动力学扭矩，偏置弹簧或配重提供偏置扭矩反作用 流体动力学扭矩和旋转位置传感器，其检测可枢转叶片围绕枢转轴线的旋转位置，其中流体流动的动态压力被确定为可枢转叶片围绕枢转轴线的旋转位置的函数，以及 流体流动的时间速率由流体流动的动态压力和流体密度的已知或测量值的组合确定，或者由流体流动的动态压力和旋转频率的另一组合 旋转涡轮机或螺旋桨与可转动叶片流量计一起安装。
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公开(公告)号：US5456116A
公开(公告)日：1995-10-10
申请号：US34516
申请日：1993-03-19
申请人： Hyok S. Lew
发明人： Hyok S. Lew
CPC分类号： G01F1/86 , G01F1/3263
摘要： A relative vibration sensor includes a transducer container vessel including a cavity surrounded by two parallel deflective walls on two opposite sides and rigid walls on other sides, a piezo electric disc element disposed within the cavity intermediate the two parallel deflective walls, at least two electrodes respectively belonging to two opposite halves of the piezo electric disc element respectively located on two opposite sides of a reference plane intersecting with the two parallel deflective walls of the cavity in a substantially perpendicular relationship, and a pair of elongated vibration sensing members respectively extending from the two parallel deflective walls of the cavity towards an approximately common direction perpendicular to the reference plane, wherein vibrations of two mechanical members respectively transmitted to the pair of elongated vibration sensing members generate two alternating electrical signals respectively from the two opposite halves of the piezo electric disc element, which two alternating electrical signals are combined into a resultant electrical signal representing the relative vibration between the two mechanical members.
摘要翻译： 相对振动传感器包括换能器容器容器，其包括由两个相对侧上的两个平行偏转壁和另一侧的刚性壁围绕的空腔，分别设置在两个平行偏转壁中间的腔室内的压电电盘元件，至少两个电极 属于分别位于与空腔的两个平行偏转壁相交的参考平面的两个相对侧上的压电电盘的两个相对的两半，其基本上垂直的关系，以及一对细长的振动感测构件，分别从两个 空腔的平行偏转壁朝向垂直于参考平面的近似共同的方向，其中分别传递到一对细长的振动感测构件的两个机械构件的振动分别从压电元件的两个相对的两半产生两个交替的电信号 两个交流电信号被组合成表示两个机械构件之间的相对振动的合成电信号。
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公开(公告)号：US5419189A
公开(公告)日：1995-05-30
申请号：US164925
申请日：1993-12-10
申请人： Hyok S. Lew , Yon S. Lew , Hyon S. Lew
发明人： Hyok S. Lew , Yon S. Lew , Hyon S. Lew
摘要： A flowmeter comprises an output cut-off circuit controlled by a command signal generated by a flow switch, wherein the flow switch generates a command signal switching on the transmission of an electrical signal representing the flow rate of media to an output terminal, when the flow rate of media being measured by the flowmeter is greater than a preset threshold value, and switches off the transmission of the electrical signal representing the flow rate of media to the output terminal, when the flow rate of media is less than the preset threshold value.
摘要翻译： 流量计包括由流量开关产生的命令信号控制的输出截止电路，其中流量开关产生一个命令信号，该命令信号在表示流体流向媒体的电信号时输出到输出终端 当介质的流量小于预设的阈值时，由流量计测量的介质的速率大于预设的阈值，并且将代表介质的流速的电信号的传输切换到输出端。
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公开(公告)号：US5351556A
公开(公告)日：1994-10-04
申请号：US113197
申请日：1993-08-30
申请人： Yon S. Lew , Hyok S. Lew
发明人： Yon S. Lew , Hyok S. Lew
摘要： A compound electronic filter for conditioning an alternating electrical signal generated by vortex shedding in a vortex flowmeter has a first stage filter comprising a first plurality of electronic filters respectively including a first plurality of electronic switches and a second stage filter comprising a second plurality of electronic filters respectively including a second plurality of electronic switches, wherein the first plurality of electronic switches switching on and off the first plurality of electronic filters one at a time are controlled by a first command signal generated from the frequency of the output signal from the first stage filter, and the second plurality of electronic switches switching on and off the second plurality of electronic filters one at a time are controlled by a second command signal generated from the frequency of the output signal from the first stage filter.
摘要翻译： 一种用于调节在涡街流量计中由涡流脱落产生的交流电信号的复合电子滤波器具有包括分别包括第一多个电子开关的第一多个电子滤波器的第一级滤波器和包括第二多个电子滤波器的第二级滤波器 分别包括第二多个电子开关，其中一次一个接通和断开第一多个电子滤波器的第一多个电子开关由从第一级滤波器的输出信号的频率产生的第一命令信号控制 并且一次一个接通和断开第二多个电子滤波器的第二多个电子开关由从第一级滤波器的输出信号的频率产生的第二命令信号控制。
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公开(公告)号：US5337616A
公开(公告)日：1994-08-16
申请号：US14802
申请日：1993-02-08
申请人： Hyok S. Lew
发明人： Hyok S. Lew
CPC分类号： G01F1/8413 , G01F1/8436 , G01F1/8468 , G01F1/8477 , G01F1/8486
摘要： A conduit included in a Coriolis force mass flowmeter has two generally straight end sections with central axes disposed on a first plane and respectively extending from two secured extremities of the conduit, and a curved midsection with central axis disposed intermediate two parallel planes perpendicular to the first plane and respectively including the central axes of the two generally straight end sections, which curved midsection connects the two generally straight end sections to one another, wherein an electromagnetic vibrator vibrates the two generally straight end sections relative to one another, and a pair of motion sensors respectively measure flexural vibrations of the two opposite halves of the curved midsection of the conduit.
摘要翻译： 包括在科里奥利力质量流量计中的导管具有两个大致直的端部部分，其中心轴设置在第一平面上并且分别从导管的两个固定末端延伸，并且具有中心轴的弯曲中部设置在垂直于第一平面的两个平行平面之间 并且分别包括两个大致直的端部的中心轴，这些弯曲的中部将两个大致直的端部彼此连接，其中电磁振动器相对于彼此振动两个大致直的端部，并且一对运动 传感器分别测量导管弯曲中段两个相对的两半的弯曲振动。
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公开(公告)号：US5226330A
公开(公告)日：1993-07-13
申请号：US785782
申请日：1991-10-31
申请人： Hyok S. Lew
发明人： Hyok S. Lew
IPC分类号： G01F1/84
CPC分类号： G01F1/8409 , G01F1/8413 , G01F1/8486 , G01F1/8495
摘要： A mass flowmeter comprises a pair of conduits disposed in a side by side arrangement and flexurally vibrated relative to one another by an electromagnetic vibrator included at the midsection of the combination of the pair of conduits wherein each of the pair of conduits includes two flexible sections respectively included in the two opposite halves thereof, wherein a pair of relative motion sensors respectively measuring the relative flexural vibration between the first halves of the pair of conduits and the relative flexural vibration between the second halves of the pair of conduits provide two electrical signals including a difference therebetween that varies as a function of mass flow rate of media moving through the pair of conduits.
摘要翻译： 质量流量计包括一对导管，它们并排布置并且通过包括在一对导管的组合的中间部分的电磁振动器相对于彼此弯曲地振动，其中一对导管中的每一个分别包括两个柔性部分 其中一对相对运动传感器分别测量一对管道的前半部分之间的相对弯曲振动和该对导管的第二半部之间的相对弯曲振动，提供两个电信号，包括一个 其间的差异随着介质移动通过该对导管的质量流量的函数而变化。
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