公开(公告)号：US06739203B1

公开(公告)日：2004-05-25

申请号：US10222411

申请日：2002-08-16

申请人： Marvin J. Feldman ,  Murray F. Feller

发明人： Marvin J. Feldman ,  Murray F. Feller

IPC分类号： G01F166

CPC分类号： G01F1/662

摘要： Ultrasonic transducers for use in time-of-flight flow measurement are made by clamping a conformal material between a face of a piezoelectric element and a housing so as to efficiently acoustically couple the piezoelectric element to a flowing fluid wetting the housing. Both in-line and probe sensing heads are described, where the in-line sensor heads make use of side-looking transducers. Acoustic isolation arrangements are used to ensure that the transducer transmits and receives acoustic energy in a single, well-defined direction. Various pre-loading arrangements, such as metal springs that can be set by driving a wedge between the spring and the housing, are used to controllably force the piezoelectric element toward the housing.

摘要翻译： 用于飞行时间流量测量的超声换能器通过在压电元件的表面和壳体之间夹持共形材料来进行，以便有效地将压电元件声耦合到润湿壳体的流动流体。 描述了在线和探针感测头，其中在线传感器头使用侧视换能器。 声隔离装置用于确保换能器在单一的，明确定义的方向上发射和接收声能。 使用各种预加载装置，例如可以通过在弹簧和壳体之间驱动楔形而设置的金属弹簧，以可控制地将压电元件迫动到壳体。

公开(公告)号：US06584860B1

公开(公告)日：2003-07-01

申请号：US10047597

申请日：2002-01-14

申请人： Murray F. Feller ,  Marvin J. Feldman

发明人： Murray F. Feller ,  Marvin J. Feldman

IPC分类号： G01F166

CPC分类号： G01F5/00 ,  G01F1/106 ,  G01F1/125 ,  G01F1/662 ,  G01F1/667 ,  G01F15/00

摘要： A significant problem in the flow probe art is that of accurately positioning a flow-sensing portion of the probe at a selected location within a pipe. Several arrangements are provided for determining the insertion depth of flow sensing probes, for measuring diameters of the pipes in which they are inserted, and for detecting the depth of those pipes. These generally involve adding to the flow probe a depth measurement device for generating an energetic beam that is reflected from the pipe or from an insertion fitting. One such sensor uses a phased array of piezoelectric element to serve both in a pulse-echo distance measurement device and in a time-of-flight flow measurement device.

摘要翻译： 流动探针技术中的一个重要问题是将探针的流量感测部分精确地定位在管道内的选定位置。 提供了几种布置来确定流量传感探针的插入深度，用于测量插入其中的管道的直径，并用于检测这些管道的深度。 这些通常包括向流量探头添加用于产生从管或从插入配件反射的能量束的深度测量装置。 一种这样的传感器使用压电元件的相控阵列来在脉冲回波距离测量装置和飞行时间流量测量装置中都起作用。

公开(公告)号：US06729192B1

公开(公告)日：2004-05-04

申请号：US10211211

申请日：2002-08-02

申请人： Murray F. Feller

发明人： Murray F. Feller

IPC分类号： G01F1500

CPC分类号： G01F1/28

摘要： A moving target flow sensor has at least one vane mounted on a shaft and rotated or oscillated in a flowing fluid. Changes in the drag forces are measured to determine the flow rate of the fluid, and, in some cases, to determine the direction of fluid flow. In some arrangements a compliant coupling is connected in a shaft between a drive transducer and a moving vane so that the instantaneous shaft speed can vary. In another arrangement, several vanes are driven by transducers that are controlled to provide a selected average rate of rotation or oscillation. In all cases, because only a change in either angular setting or angular speed of the shaft is detected, the flow sensor is able to operate over a relatively wide operating range and its long term drift is relatively low.

摘要翻译： 移动目标流量传感器具有至少一个叶片，其安装在轴上并在流动的流体中旋转或振荡。 测量牵引力的变化以确定流体的流速，并且在某些情况下确定流体流动的方向。 在一些布置中，柔性联接件连接在驱动传感器和移动叶片之间的轴中，使得瞬时轴速度可以变化。 在另一种布置中，几个叶片由被控制以提供选择的平均旋转或振荡速率的换能器驱动。 在所有情况下，由于仅检测到轴的角度设置或角速度的变化，流量传感器能够在较宽的工作范围内运行，并且其长期漂移相对较低。

公开(公告)号：US06725733B1

公开(公告)日：2004-04-27

申请号：US10456602

申请日：2003-06-06

申请人： Murray F. Feller

发明人： Murray F. Feller

IPC分类号： G01F128

CPC分类号： G01F1/206 ,  G01F1/28

摘要： Fluid flow rate can be measured by determining the torque on a shaft used to oscillate or rotate a vane in the fluid. An intermediate gear, which links a drive gear to a gear on the vane shaft, is mounted in a yoke so that the shaft torque tends to move the intermediate gear out of position. An actuator controlled by a feedback control system is used to maintain the intermediate gear in nominal alignment. The forces required for this null-balancing operation are representative of the torque, and thus of the fluid flow rate.

摘要翻译： 可以通过确定用于在流体中振动或旋转叶片的轴上的扭矩来测量流体流速。 将驱动齿轮连接到叶片轴上的齿轮的中间齿轮安装在轭中，使得轴扭矩倾向于使中间齿轮移动到位置。 使用由反馈控制系统控制的致动器来保持中间齿轮的标称对准。 这种空平衡操作所需的力代表了扭矩，因此代表了流体流速。

公开(公告)号：US06681645B1

公开(公告)日：2004-01-27

申请号：US10113411

申请日：2002-04-01

申请人： Murray F. Feller

发明人： Murray F. Feller

IPC分类号： G01F128

CPC分类号： G01F1/28

摘要： A target-type flow meter uses a target in a flowing fluid and selectively changes the orientation of the target with respect to the direction of flow of the fluid between two or mote orientations, where the target provides a different flow impedance in each of the orientations. This change in flow impedance gives rise to a corresponding difference in drag forces exerted on the target by the flowing fluid. Those forces, or displacements associated with them, are measured to determine the rate of fluid flow. In some cases the target may be a vane attached to a shaft rotated by a motor. In others, the target may be a vane structure attached to a post in a flexible fashion so that it can be oscillated transverse to the flow direction by fixed electromagnets acting on a permanent magnet portion of the vane structure.

摘要翻译： 目标型流量计使用流动流体中的目标物，并且相对于两个或微尘取向之间的流体的流动方向选择性地改变目标的取向，其中目标在每个取向中提供不同的流动阻抗 。 流量阻抗的这种变化导致由流动的流体施加在目标上的阻力的相应的差异。 测量与它们相关联的那些力或位移，以确定流体流动速率。 在某些情况下，目标物可以是附接到由马达旋转的轴上的叶片。 在另一些中，靶可以是以柔性方式附接到柱的叶片结构，使得其可以通过作用在叶片结构的永磁体部分上的固定电磁体横向于流动方向摆动。

公开(公告)号：US06463807B1

公开(公告)日：2002-10-15

申请号：US09704913

申请日：2000-11-02

申请人： Murray F. Feller

发明人： Murray F. Feller

IPC分类号： G01L1102

CPC分类号： G01F1/586 ,  G01F1/584 ,  G01F1/588 ,  G01F1/60

摘要： A magnetic flow sensor using a permanent magnet to provide the magnetic flux is configured to compensate for electrode related drifts. The electrode signals are cyclically short circuited and the flow rate related voltages are isolated from various drift signals during short signal sampling periods. Some versions of the invention use multiple sensing heads in a single sensor to increase the magnitude of the flow related signal.

摘要翻译： 使用永磁体提供磁通量的磁流量传感器被配置为补偿与电极相关的漂移。 电极信号周期性短路，并且在短信号采样周期期间，流速相关电压与各种漂移信号隔离。 本发明的一些版本在单个传感器中使用多个感测头来增加流量相关信号的幅度。

公开(公告)号：US06241383B1

公开(公告)日：2001-06-05

申请号：US09238876

申请日：1999-01-27

申请人： Murray F. Feller ,  John F. Garey

发明人： Murray F. Feller ,  John F. Garey

IPC分类号： G01K1706

CPC分类号： G01K7/16

摘要： A device for monitoring heat transfer systems. A non-heated temperature sensor is used to determine the approximate temperature of a flowing fluid being monitored. A heated temperature sensor is exposed to and is thereby cooled by the flowing fluid being monitored. A flow measurement is made using a flow sensor and the heat transfer from the heated temperature sensor to the flowing fluid is determined. An electrolytic means is provided for chemically altering the environment of the heat transfer surface of the heated temperature sensor to determine its use or effects for testing, operation and maintenance of the heat transfer system and also the device. A hot tap insertion flow probe configuration is presented which includes a cost effective miniature magnetic flow sensor using permanent magnets.

摘要翻译： 一种用于监测传热系统的装置。 使用非加热温度传感器来确定被监测的流动流体的近似温度。 加热的温度传感器暴露于被监测的流动流体并由此被冷却。 使用流量传感器进行流量测量，并且确定从加热的温度传感器到流动流体的热传递。 提供电解装置用于化学改变加热温度传感器的传热表面的环境，以确定其用于传热系统和设备的测试，操作和维护的用途或效果。 提出了一种热水龙头插入流动探头配置，其包括使用永磁体的具有成本效益的微型磁流量传感器。

公开(公告)号：US5392657A

公开(公告)日：1995-02-28

申请号：US20908

申请日：1993-02-22

申请人： Murray F. Feller

发明人： Murray F. Feller

IPC分类号： G01F1/10 ,  G01F15/00

CPC分类号： G01F1/106

摘要： Apparatus is provided in which flow to be monitored actuates a device to move past a sensing electrode, causing changes of a capacitive sensing impedance in series with an impedance transformation device. The sensing electrode is at the high-impedance level of the impedance transformation device. Only a small fraction of the stray capacitance of circuit wiring, etc., which is connected at the low-impedance level of the impedance transformation device is reflected as a dulling shunt across the sensing capacitance.

摘要翻译： 提供了一种设备，其中待监视的流动使设备移动经过感测电极，导致与阻抗变换装置串联的电容性感测阻抗的变化。 感测电极处于阻抗变换装置的高阻抗电平。 在阻抗变换装置的低阻抗电平处连接的电路布线等的杂散电容的一小部分被反映为跨越感测电容的钝化分路。

公开(公告)号：US4535637A

公开(公告)日：1985-08-20

申请号：US578283

申请日：1984-02-08

申请人： Murray F. Feller

发明人： Murray F. Feller

IPC分类号： G01F1/10 ,  G01F1/115 ,  G01F1/64 ,  G01F1/56

CPC分类号： G01F1/115 ,  G01F1/10 ,  G01F1/64

摘要： The disclosed flow-detecting apparatus involves gating of phase-related excitation and sensed signals from electrodes close to a flow-activated tracker in a liquid passage. A high gain comparator provides peak-limited signals to the phase-comparison gate. In one form, a pair of excitation electrodes are symmetrical in relation to a single sensing electrode. That electrode supplies a sensed signal to one comparator input, the other comparator input having fixed bias. In another form, a pair of sensing electrodes are disposed in an excitation pattern between a localized excitation electrode and a metal pipe that forms the passage and acts as a second excitation electrode. The sensed signals reach respective input terminals of a high-gain comparator and it responds to the difference between the inputs. Other configurations of the electrodes and their excitation are disclosed, including one that promotes rejection of common-mode spurious signals. A comparator that receives flow-representing signals is stabilized against electrical unbalance by a negative feedback loop having a long time constant. In flow-detection apparatus having a multiple-rotor flow-sensing probe, separate flow-detection circuits are used for the respective rotors. The outputs of the flow-representing circuits are combined. Use of different excitation frequencies for those flow-detection circuits adds assurance of non-interfering operation of the flow-detection circuits.

摘要翻译： 所公开的流量检测装置包括从液体通道中靠近流动启动的跟踪器的电极门控相位激励和感测信号。 高增益比较器向相位比较门提供峰值限制信号。 在一种形式中，一对激励电极相对于单个感测电极是对称的。 该电极将感测到的信号提供给一个比较器输入，另一个比较器输入具有固定的偏置。 在另一种形式中，一对感测电极以局部激励电极和形成通道的金属管之间的激励图案设置，并用作第二激励电极。 感测到的信号到达高增益比较器的相应输入端，并响应输入之间的差异。 公开了电极的其他结构及其激励，包括促进共模寄生信号的抑制的结构。 接收流量表示信号的比较器通过具有长时间常数的负反馈回路而稳定而抵抗电不平衡。 在具有多转子流量检测探针的流量检测装置中，对于各个转子使用单独的流量检测电路。 流量表示电路的输出被组合。 对于这些流量检测电路使用不同的激发频率增加了流量检测电路的非干扰操作的保证。

公开(公告)号：US4388003A

公开(公告)日：1983-06-14

申请号：US258521

申请日：1981-04-29

申请人： Murray F. Feller

发明人： Murray F. Feller

IPC分类号： G01F1/86 ,  G01K17/16

CPC分类号： G01K17/16 ,  G01F1/86

摘要： The disclosed apparatus includes a heat meter and a flow meter. The heat meter includes means for delivering trains of pulses to a heat register, the pulses per train being proportional to the temperature difference between fluid inlet and outlet passages of heat exchange means, and the recurrence rate of the pulse trains being determined by a flow sensor. A visual indicator of the pulse trains facilitates zero-difference adjustment of the temperature sensors when they are both at the same temperature. Compensation for variations in the specific heat of the fluid and temperature-related inaccuracy of the flow sensor is effected by non-linear frequency adjustment of an oscillator that generates the pulses. In a flow meter (omitting the temperature-difference circuit) compensation for temperature-related inaccuracy of flow-sensors is effected correspondingly.

摘要翻译： 所公开的装置包括热量计和流量计。 热量计包括用于将脉冲串传送到热量寄存器的装置，每列的脉冲与热交换装置的流体入口和出口通道之间的温度差成比例，并且由流量传感器确定的脉冲序列的复现速率 。 脉冲串的视觉指示器便于温度传感器在相同温度下的零差调整。 流体传感器的比热变化和温度相关不准确性的补偿通过产生脉冲的振荡器的非线性频率调整来实现。 在流量计（省略温差电路）中，相应地对流量传感器的温度相关不准确性进行补偿。