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1. 发明授权

US06826965B1 Anti-parallel tag flow measurement system 失效
公开(公告)号：US06826965B1
公开(公告)日：2004-12-07
申请号：US09702074
申请日：2000-10-30
申请人： Yi Liu
发明人： Yi Liu
IPC分类号： G01F166
CPC分类号： G01F1/662 , G01F1/667 , G01F1/7082
摘要： A tag flow measurement system wherein a first and a second measurement path are provided across a flowing fluid, and a receiver in each path receives signals modulated by scatters in the fluid. The direction of signal propagation in one path faces in an opposite sense to, e.g., is anti-parallel to, the direction of propagation in the other path, and the two receiver outputs are correlated to determine a time interval representative of flow velocity. In one embodiment each path is defined by a transmitter on one side of the conduit and a receiver on the other side of the conduit, and the positions or orientations of transmitter and receiver are reversed in the second pair. Thus, the first transmitter may lie on the same side of the conduit as the second receiver, and the second transmitter may lie on the same side of the conduit as the first receiver. Diametral or chordal paths may be used. A prototype clamp on system detects flowing air at atmospheric pressure in a schedule 40 one inch steel pipe over an extended range, at flow rates as low as several meters per second. The coherent crosstalk between one transmitter and the receiver of the other pair is greatly reduced, and travels only through the pipe and not across the fluid, so the cross-correlation signal to noise ratio may be enhanced by a factor of ten or more over that of a conventional tag correlation system. This allows effective operation in small conduits, at small spacings, at low flows and in other difficult measurement situations. Each transmitter may operate at a different frequency, and the received signals may be demodulated in phase quadrature to further enhance channel separation and received signal power. Frequencies or frequency pairs in the range of approximately one to four megahertz may be useful for one inch pipe, while lower frequencies in the range of 0.1 to 0.5 megahertz are advantageously employed for larger conduits. Spacings may be ¼ to {fraction (1/10)} of a pipe diameter, and a common spacing, e.g., two inches may be employed for conduits over a diameter range of one to ten inches with high accuracy.

2. 发明授权

US06813962B2 Distributed sound speed measurements for multiphase flow measurement 有权
标题翻译：分布式声速测量用于多相流测量
公开(公告)号：US06813962B2
公开(公告)日：2004-11-09
申请号：US10256760
申请日：2002-09-27
申请人： Daniel L. Gysling , Mark R. Myers
发明人： Daniel L. Gysling , Mark R. Myers
IPC分类号： G01F166
CPC分类号： G01F1/74
摘要： A multiphase flow meter distributed system is disclosed that is capable of measuring phase flow rates of a multiphase fluid. The distributed system includes at least one flow meter disposed along the pipe, an additional sensor disposed along the pipe spatially removed from the flow meter, and a multiphase flow model that receives flow related parameters from the flow meter and the additional sensor to calculate the phase flow rates. The flow meter provides parameters such as pressure, temperature, fluid sound speed and/or velocity of the fluid, and the additional sensor provides a parameter indicative of pressure and or temperature of the fluid. Depending on production needs and the reservoir dimensions, the distributed system may utilize a plurality of flow meters disposed at several locations along the pipe and may further include a plurality of additional sensors as well. The distributed system preferably uses fiber optic sensors with bragg gratings. This enables the system to have a high tolerance for long term exposure to harsh temperature environments and also provides the advantage of multiplexing the flow meters and/or sensors together.
摘要翻译：公开了能够测量多相流体的相流量的多相流量计分布式系统。分布式系统包括至少一个沿着管道设置的流量计，沿着管道从空气中移除的附加传感器，以及从流量计和附加传感器接收与流量有关的参数以计算相位的多相流模型流量。流量计提供诸如压力，温度，流体声速和/或流体速度的参数，并且附加传感器提供指示流体的压力和/或温度的参数。根据生产需要和贮存器尺寸，分布式系统可以利用沿着管道设置在多个位置处的多个流量计，并且还可以包括多个额外的传感器。分布式系统优选地使用具有布拉格光栅的光纤传感器。这使得系统能够在长时间暴露于恶劣的温度环境下具有高容限性，并且还提供将流量计和/或传感器复用在一起的优点。

3. 发明授权

US06758100B2 Doppler flowmeter for multiphase flows 有权
标题翻译：用于多相流的多普勒流量计
公开(公告)号：US06758100B2
公开(公告)日：2004-07-06
申请号：US09873572
申请日：2001-06-04
申请人： Songming Huang
发明人： Songming Huang
IPC分类号： G01F166
CPC分类号： G01F1/663 , G01F1/662 , G01F1/667 , G01F1/74
摘要： There is provided an apparatus for measuring flow rates of multi-phase flows in metal pipes, the apparatus comprising a transceiver generating a pulsed Doppler signal in the range 100 KHz to 10 microHz and an impedance device adapted to be coupled to a pipe so as to reduce or prevent reflections occurring from a pipe wall in response to the pulsed signal. The apparatus includes signal processor for analysing reflected signals received by the transceiver and for calculating the energy contained in a received signal. The pulsed signal is a shear wave which assists analysis of the reflected signals. The impedance device comprises a sound absorbing block made from plastics material with tungsten particles embedded therein. Different embodiments using various arrangements of transceivers are described, and also a related method of using the apparatus.
摘要翻译：提供了一种用于测量金属管道中的多相流量的流量的装置，该装置包括产生100KHz至10微米范围内的脉冲多普勒信号的收发器，以及适于耦合到管道的阻抗装置，以便响应于脉冲信号减少或防止从管壁产生的反射。该装置包括用于分析由收发器接收的反射信号并用于计算包含在接收信号中的能量的信号处理器。脉冲信号是有助于分析反射信号的剪切波。阻抗装置包括由塑料材料制成的吸音块，其中嵌有钨颗粒。描述使用收发器的各种布置的不同实施例，以及使用该装置的相关方法。

4. 发明授权

US06694824B2 Flow measuring device 失效
标题翻译：流量测量装置
公开(公告)号：US06694824B2
公开(公告)日：2004-02-24
申请号：US10149100
申请日：2002-06-05
申请人： Norio Shinmura , Shigeru Iwanaga , Yukio Nagaoka
发明人： Norio Shinmura , Shigeru Iwanaga , Yukio Nagaoka
IPC分类号： G01F166
CPC分类号： G01F1/662
摘要： A flow meter includes a flow path through which a fluid flows; a pair of transceivers for sending and receiving an ultrasonic wave propagating across the flow path; and a flow calculation section for calculating a flow rate of the fluid flowing through the flow path based on a result of the ultrasonic wave being sent and received by the pair of transceivers. The flow path has an equal flow speed area in which the fluid flows at a substantially equal flow speed over an entire flow rate area ranging from a high flow rate area to a low flow rate area. The pair of transceivers send and receive the ultrasonic wave so that the ultrasonic wave propagates in the equal flow speed area.
摘要翻译：流量计包括流体流过的流动路径; 一对收发器，用于发送和接收跨越流路传播的超声波; 以及流量计算部，其基于由所述一对收发器发送和接收的超声波的结果来计算流过所述流路的流体的流量。流动路径具有相等的流动速度区域，其中流体在从高流量区域到低流量区域的整个流速区域上以基本上相等的流速流动。一对收发器发送和接收超声波，使得超声波在相等的流速区域中传播。

5. 发明授权

US06681642B2 Ultrasonic flowmeter and manufacturing method thereof 有权
标题翻译：超声波流量计及其制造方法
公开(公告)号：US06681642B2
公开(公告)日：2004-01-27
申请号：US09995331
申请日：2001-11-27
申请人： Michio Ohkawa
发明人： Michio Ohkawa
IPC分类号： G01F166
CPC分类号： G01F1/662 , G01F1/667
摘要： An ultrasonic flowmeter of the present invention has a pipe (2) through which a fluid to be measured flows, and measurement portions (3) separated on the pipe by a predetermined distance along the longitudinal direction of the pipe. The measurement portions each comprises a transducer fixing member (4) having an arc shaped indentation (6) into which a part of the pipe can be fitted, and a piezoelectric transducer (5) fixed to the transducer fixing member. The pipe and the arc shaped indentation are closely fixed to each other by an adhesive (7) by fitting and pressing the pipe into the arc shaped indentation via the adhesive.
摘要翻译：本发明的超声波流量计具有：被测量流体流过的管道（2）和沿着管道的长度方向在管道上隔开预定距离的测量部（3）。测量部分各自包括具有弧形凹部（6）的换能器固定部件（4），管道的一部分可以嵌入其中，以及固定在换能器固定部件上的压电换能器（5）。管和弧形凹陷通过粘合剂（7）通过经由粘合剂将管装入并压入弧形凹陷中彼此紧密地固定。

6. 发明授权

US06647806B1 Turbulence conditioner for use with transit time ultrasonic flowmeters 有权
标题翻译：湍流调节器用于运输时间超声波流量计
公开(公告)号：US06647806B1
公开(公告)日：2003-11-18
申请号：US09616521
申请日：2000-07-14
申请人： Herbert Estrada , Donald R. Augenstein
发明人： Herbert Estrada , Donald R. Augenstein
IPC分类号： G01F166
CPC分类号： G01F15/00 , G01F1/662
摘要： An apparatus for determining fluid flow in a pipe. The apparatus includes an ultrasonic flowmeter adapted to be placed with the pipe for measuring fluid flow in the pipe. The apparatus includes a turbulence-reducing flow conditioner adapted to be disposed in the pipe through which the fluid flow in the pipe passes and upstream to the flowmeter. A turbulence-reducing flow conditioner for an ultrasonic flowmeter for a pipe. A method for determining fluid flow in a pipe. The method includes the steps of flowing the fluid in the pipe through a turbulence reducing flow conditioner wherein the conditioner reduces turbulence intensity T of the fluid and increases frequency of residual turbulence of the fluid after the fluid has passed through the conditioner. Then there is the step of measuring the fluid flow in the pipe with an ultrasonic flowmeter after the fluid flow has passed through the conditioner. A method for reducing turbulence in a pipe for measuring flow in the pipe.
摘要翻译：一种用于确定管道中的流体流动的装置。该装置包括一个适于放置在管道中用于测量管道中流体流动的超声波流量计。该装置包括一个湍流减少流量调节器，适于设置在管道中，管道中的流体流过该管道通过流量计的上游。一种用于管道的超声波流量计的湍流减少流量调节器。一种用于确定管道中的流体流动的方法。该方法包括以下步骤：使管道中的流体流过湍流减少流动调节器，其中调节器减少流体的湍流强度T，并且在流体通过调节器之后增加流体的残余湍流频率。然后，在流体流过调节器之后，使用超声波流量计测量管道中的流体流动的步骤。一种用于减少用于测量管道中的流量的管道中的湍流的方法。

7. 发明授权

US06604433B1 Ultrasonic transducer and ultrasonic flowmeter 有权
标题翻译：超声波换能器和超声波流量计
公开(公告)号：US06604433B1
公开(公告)日：2003-08-12
申请号：US09633808
申请日：2000-08-07
申请人： Naoko Azuma , Akihisa Adachi , Masahiko Hashimoto , Tooru Ninomiya , Kenzo Ohji
发明人： Naoko Azuma , Akihisa Adachi , Masahiko Hashimoto , Tooru Ninomiya , Kenzo Ohji
IPC分类号： G01F166
CPC分类号： G01F1/662 , G01F1/667
摘要： The present invention provides an ultrasonic transducer having uniform characteristics. Because the characteristics of a pair of ultrasonic transducer are equalized with each other, measuring accuracy of an ultrasonic flowmeter can be improved. Electrical connection from an electrode surface 13 of a piezoelectric body 11 to an external electrode is achieved not by soldering but by an electroconductive elastic body 16. As a result, variations of the frequency characteristics due to thermal load on the piezoelectric body 11 can be reduced, and this makes it possible to obtain an ultrasonic transducer with uniform characteristics, and measuring accuracy of an ultrasonic flowmeter using a pair of the ultrasonic transducer can be improved.
摘要翻译：本发明提供一种具有均匀特性的超声换能器。由于一对超声波换能器的特性相互一致，所以能够提高超声波流量计的精度。从压电体11的电极表面13到外部电极的电连接不是通过焊接而是通过导电弹性体16实现的。结果，可以减小由于压电体11上的热负荷引起的频率特性的变化可以获得具有均匀特性的超声波换能器，并且可以提高使用一对超声波换能器的超声波流量计的测量精度。

8. 发明授权

US06595070B1 Acoustic flow meters 失效
标题翻译：声流计
公开(公告)号：US06595070B1
公开(公告)日：2003-07-22
申请号：US09926570
申请日：2002-01-11
申请人： Trevor Cole
发明人： Trevor Cole
IPC分类号： G01F166
CPC分类号： G01P5/245 , G01F1/667
摘要： Acoustic flow meters are used for the measurement of flow velocity of fluids. They have particular application in meters for gas and water in pipelines. The meter includes a tube fitted with three or more acoustic transducers distributed along its length and arranged to transmit wave packets up and down between at least two pairs of the acoustic transducers. The wave packets comprise a signal including zero crossings spaced apart by a packet period determined by a known packet frequency. The flow meter also includes measurement means associated with the transducers to make first measurements of received packets, from which the time of arrival of the zero crossings of a received packet can be determined relative to the time of transmission of the packet. A second measurement from which a particular zero crossing in the transmitted packet can be identified in the received packet. And calculation means to determine the velocity of fluid flow in the tube using the measurements. There is also a method of operation.
摘要翻译：声流计用于测量流体的流速。他们在管道中的气体和水的特别应用在米。仪表包括一个装有三个或更多个沿着其长度分布的声学传感器的管子，并被布置成在至少两对声换能器之间上下传送波包。波分组包括一个信号，该信号包括由已知分组频率确定的分组周期间隔开的零交叉。流量计还包括与换能器相关联的测量装置，以便对接收到的分组进行第一次测量，从而可以相对于分组的传输时间来确定接收分组的过零点的到达时间。在接收到的分组中可以识别发送分组中的特定零交叉的第二测量。并且计算意味着使用测量来确定管中的流体流速。还有一种操作方法。

9. 发明授权

US06550345B1 Technique for measurement of gas and liquid flow velocities, and liquid holdup in a pipe with stratified flow 有权
标题翻译：测量气体和液体流速的技术，以及分层流量管道中的液体滞留
公开(公告)号：US06550345B1
公开(公告)日：2003-04-22
申请号：US09658071
申请日：2000-09-11
申请人： Winsor Letton
发明人： Winsor Letton
IPC分类号： G01F166
CPC分类号： G01F1/74 , G01F1/002 , G01F1/662 , G01F23/2962
摘要： An ultrasonic flowmeter is disclosed that detects the speed, amount, and composition of a two-phase flow travelling through it. One or more ultrasonic paths corresponding to ultrasonic transducers are positioned to detect the velocity and speed of sound through one phase of the two-phase flow. A second ultrasonic path is positioned to travel through the one phase of the two-phase flow, but to reflect off the interface between of interface of the two phases. A third ultrasonic path is positioned to travel through the second phase of the two-phase flow, but once again reflects off the interface between the two phases. The information of transit times for ultrasonic signals along these ultrasonic paths provides the speed of the two-phase flows, the amount of the two-phase flows, and the compositions of the two-phase flows. A quality assurance check ensures that the measurements are accurate.
摘要翻译：公开了一种超声波流量计，其检测穿过其的两相流的速度，量和组成。定位对应于超声换能器的一个或多个超声波路径，以检测通过两相流的一相的声速和速度。第二超声波路径被定位成穿过两相流的一相，但是反射出两相界面之间的界面。第三超声波路径被定位成穿过两相流的第二相，但是再次反射出两相之间的界面。超声信号沿着这些超声波路径的传播时间的信息提供两相流的速度，两相流的量和两相流的组成。质量保证检查确保测量准确。

10. 发明授权

US06539812B1 System for measuring the flow-rate of a gas by means of ultrasound 失效
标题翻译：通过超声波测量气体流量的系统
公开(公告)号：US06539812B1
公开(公告)日：2003-04-01
申请号：US09913900
申请日：2001-08-20
申请人： Giorgio Bergamini
发明人： Giorgio Bergamini
IPC分类号： G01F166
CPC分类号： G01F1/662
摘要： An improved system for measuring the flow-rate of a gas by means of ultrasound, including a tubular element in which a plurality of openings are formed to allow one or more gas-flows to flow into the tubular element, and two or more devices for transmitting/receiving ultrasound beams. The system further includes two or more devices for focusing ultrasound beams. The transmitting/receiving devices transmit and receive, respectively, the ultrasound beams which pass through the focusing devices and the one or more gas-flows inside the tubular element and thus measure the flow-rate thereof.
摘要翻译：一种用于通过超声波测量气体流速的改进系统，包括管状元件，其中形成多个开口以允许一个或多个气流流入管状元件，以及两个或更多个用于发射/接收超声波束。该系统还包括用于聚焦超声波束的两个或更多个装置。发送/接收装置分别发送和接收通过聚焦装置的超声波束和管状元件内的一个或多个气体流，从而测量其流速。

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