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    Method for measuring flow rate of a fluid in a conduit
    61.
    发明授权
    Method for measuring flow rate of a fluid in a conduit 失效
    测量管道中流体流量的方法

    公开(公告)号：US6094993A

    公开(公告)日：2000-08-01

    申请号：US56538

    申请日：1998-04-08

    Applicant: John E. Traina

    Inventor： John E. Traina

    IPC: G01F1/46

    CPC classification number: G01F1/46

    Abstract: A method of measuring fluid flow through a conduit takes a plurality of pressure readings at a high sampling rate preferably of from 15 to 25 samples per second. The square root of each reading is found. An average of those square roots is multiplied by a predetermined constant to find the flow rate.

    Abstract translation: 测量通过管道的流体流动的方法以高采样率采取多个压力读数，优选地为每秒15至25个采样。 找到每个阅读的平方根。 将这些平方根的平均值乘以预定常数以找到流量。

    Flow measurement compensation technique for use with an averaging pitot tube type primary element
    62.
    发明授权
    Flow measurement compensation technique for use with an averaging pitot tube type primary element 失效
    用于平均皮托管式主要元件的流量测量补偿技术

    公开(公告)号：US5817950A

    公开(公告)日：1998-10-06

    申请号：US582905

    申请日：1996-01-04

    Applicant: David E. Wiklund ,  Brian J. Bischoff

    Inventor： David E. Wiklund ,  Brian J. Bischoff

    IPC: G01F1/46

    CPC classification number: G01F1/46

    Abstract: A transmitter in a process control system for measuring flow rate measures total pressure (P.sub.TOT) and differential pressure (h) of process fluid flowing through a process pipe. The static pressure (P.sub.STAT) is determined based upon the total pressure (P.sub.TOT). The calculated static pressure is used to determine the fluid density (.rho.) and the gas expansion factor (Y.sub.1) of the process fluid flowing in the pipe. This information is used to calculate flow rate (Q) of the process fluid.

    Abstract translation: 用于测量流量的过程控制系统中的变送器测量流过过程管道的工艺流体的总压力（PTOT）和压差（h）。 静压（PSTAT）是根据总压（PTOT）来确定的。 计算静态压力用于确定在管道中流动的工艺流体的流体密度（rho）和气体膨胀系数（Y1）。 该信息用于计算过程流体的流量（Q）。

    Submersible streamlined meter with a pitot tube for measuring water flow in an open channel
    65.
    发明授权
    Submersible streamlined meter with a pitot tube for measuring water flow in an open channel 失效
    潜水流线型仪表，带有皮托管，用于测量开放通道中的水流量

    公开(公告)号：US5597963A

    公开(公告)日：1997-01-28

    申请号：US256033

    申请日：1994-10-06

    Applicant: Graeme M. Smart ,  Michael P. Hayes ,  Stephen G. George

    Inventor： Graeme M. Smart ,  Michael P. Hayes ,  Stephen G. George

    IPC: G01F1/00 ,  G01F1/46 ,  G01P5/16 ,  G01P13/02

    CPC classification number: G01P5/16 ,  G01F1/002 ,  G01F1/46 ,  G01P13/02

    Abstract: A gauging meter including a streamline housing at a forward end of which a pitot type tube, the tail end of the housing having a tail fin of fins, the housing being connected to a cable or rod which, in use, suspends or supports the housing in liquid flow, the housing incorporating electronic measuring device for optionally measuring liquid depth, liquid velocity head and temperature, the sensed measurements being either stored within the housing or multiplexed and sent to a remote controller for storage and recording or viewing.

    Abstract translation: PCT No.PCT / NZ92 / 00009 Sec。 371日期：1994年10月6日 102（e）日期1994年10月6日PCT 1992年12月23日PCT PCT。 出版物WO93 / 134257 日期1993年7月8日一种测量仪表，其包括在其前端的流线壳体，皮托型管，壳体的尾端具有翅片尾翼，壳体连接到电缆或杆，在使用中， 悬挂或支撑液体流动的壳体，壳体结合电子测量装置，用于可选地测量液体深度，液体速度头和温度，感测的测量值存储在壳体内或多路复用并被发送到遥控器以进行存储和记录或观察 。

    Enhanced Type S pitot tube with reduced and symmetric response to pitch
    66.
    发明授权
    Enhanced Type S pitot tube with reduced and symmetric response to pitch 失效
    增强型S皮托管，对音调具有减小和对称的响应

    公开(公告)号：US5535634A

    公开(公告)日：1996-07-16

    申请号：US395421

    申请日：1995-02-28

    Applicant: John E. Traina ,  Richard Myers

    Inventor： John E. Traina ,  Richard Myers

    IPC: G01F1/46

    CPC classification number: G01F1/46

    Abstract: A improved Type S or reverse type pitot tube has two conduit legs which are mirror images of one another. Each conduit leg has an input portion having a pressure port therein, a support portion and a connecting portion connected between the input portion and the support portion. The support portion and the connecting portion lie in one plane which plane is substantially perpendicular to a centerline through the input portions. The conduit legs are shaped and oriented relative to one another so that the pressure ports of the input portions of the first and second conduits are collinear and when placed in a conduit, the pitot tube will be symmetrical in a yaw plane and both symmetrical and non-interfering in a pitch plane. The first and second conduits are spaced apart over at least a portion of their length to define an opening adjacent the input portions which opening is at least 3 times wider and deeper than the input portions. With this pitot tube the errors in flow measurement which result from the pitch angle flow are negligible in most cases and never result in a low biased reading.

    Abstract translation: 改进的S型或反型皮托管具有彼此成镜像的两个导管腿。 每个导管腿具有其中具有压力端口的输入部分，支撑部分和连接在输入部分和支撑部分之间的连接部分。 支撑部分和连接部分位于一个平面中，该平面基本上垂直于通过输入部分的中心线。 导管腿相对于彼此成形和定向，使得第一和第二导管的输入部分的压力端口共线，并且当放置在导管中时，皮托管将在偏航平面中对称，并且对称和非对称 在间距平面上干扰。 第一和第二导管在它们的长度的至少一部分上间隔开以限定邻近输入部分的开口，该开口比输入部分宽至少3倍。 对于这个皮托管来说，由于桨距角流动引起的流量测量误差在大多数情况下是可以忽略的，从不导致读数偏低。

    Multi-pitot tube assembly
    67.
    发明授权
    Multi-pitot tube assembly 失效
    多皮管组装

    公开(公告)号：US5483839A

    公开(公告)日：1996-01-16

    申请号：US353642

    申请日：1994-12-08

    Applicant: Robert Meunier

    Inventor： Robert Meunier

    IPC: G01F1/46 ,  G01P5/165

    CPC classification number: G01P5/165 ,  G01F1/46

    Abstract: A multi-pitot tube assembly for use in flow measurements of a fluid surroing a test structure. The assembly has multiple, identically shaped pre-formed pitot tubes sealed within a molded polyurethane fin shape. The pitot tubes are nested together and passed through an alignment disk into separate spread holes in a common sealing plug. The surface of the plug is shaped to conform to the surface of the test structure. The pitot tubes, alignment disk and plug are inserted into a mold and polyurethane is injected to seal the individual tubes and form the fin shape from which the pitot tubes extend. The mold is removed and the assembly is attached to the test structure with the fin extending into the medium and the sealing plug flush with the outer surface of the test structure. A watertight, O-ring seal is provided between the plug and the test structure.

    Abstract translation: 用于流体测量围绕测试结构的流体的多皮托管组件。 该组件具有密封在模制的聚氨酯翅片形状内的多个相同形状的预先形成的皮托管。 皮托管嵌套在一起，并通过一个对准盘，在普通的密封塞中分开扩散孔。 插头的表面成形为符合测试结构的表面。 将皮托管，对准盘和插头插入模具中，并注入聚氨酯以密封各个管并形成皮托管延伸的翅片形状。 模具被移除并且组件附接到测试结构，其中翅片延伸到介质中，并且密封塞与测试结构的外表面齐平。 在插头和测试结构之间提供防水O形密封圈。

    Truncated pyramid-shape multi-hole pitot probe and flight velocity detection system using said truncated pyramid-shape multi-hole pitot probe
    68.
    发明授权
    Truncated pyramid-shape multi-hole pitot probe and flight velocity detection system using said truncated pyramid-shape multi-hole pitot probe 失效
    截锥金字塔形多孔皮托探头和飞行速度检测系统采用截头棱锥形多孔皮托探针

    公开(公告)号：US5423209A

    公开(公告)日：1995-06-13

    申请号：US249068

    申请日：1994-05-25

    Applicant: Teruomi Nakaya ,  Masao Ebihara ,  Yoshio Hayashi ,  Seizo Suzuki ,  Naoaki Kuwano ,  Asao Hanzawa ,  Takashi Saitow ,  Mitsuo Usami ,  Toru Iwata

    Inventor： Teruomi Nakaya ,  Masao Ebihara ,  Yoshio Hayashi ,  Seizo Suzuki ,  Naoaki Kuwano ,  Asao Hanzawa ,  Takashi Saitow ,  Mitsuo Usami ,  Toru Iwata

    IPC: G01F1/46 ,  G01P5/16 ,  G01P5/165 ,  G01P13/02 ,  G01C21/00

    CPC classification number: G01F1/46 ,  G01P13/025 ,  G01P5/165

    Abstract: A flight velocity detection system using a truncated pyramid-shape multi-e Pitot probe in which an extreme end portion has a truncated pyramid-shape, a cylindrical hole is provided at the apex thereof, a total pressure tube of a smaller diameter than that of the cylindrical hole is secured at a position by a predetermined length determined by a relationship with the diameter of the cylindrical hole from the extreme end of the cylindrical hole, and groups of pressure holes comprised of a plurality of pressure holes are arranged in each of the truncated pyramid surfaces of the truncated pyramid shape. Items of pressure information detected by the probe are input into a velocity vector processor to convert them into electric signals, and signals are processed using pressure coefficients of the holes of the probe with respect to the velocity vector stored in advance in the velocity vector processor to calculate flight velocity vector (V, .alpha., .beta.) with respect to the probe axis from the pressure information and air density.

    Abstract translation: 使用截头棱锥形多孔皮托探头的飞行速度检测系统，其顶端具有截头棱锥形，圆柱形孔设置在其顶点，直径小于 圆柱形孔被固定在与圆柱形孔的前端与圆柱形孔的直径关系确定的预定长度的位置处，并且由多个压力孔组成的一组压力孔布置在 截头棱锥形截面金字塔表面。 由探头检测到的压力信息的项目被输入到速度矢量处理器中以将它们转换为电信号，并且使用相对于预先存储在速度矢量处理器中的速度向量的探针的孔的压力系数来处理信号， 从压力信息和空气密度计算相对于探针轴的飞行速度矢量（V，α，β）。

    Probe systems for measuring static pressure and turbulence intensity in fluid streams
    69.
    发明授权
    Probe systems for measuring static pressure and turbulence intensity in fluid streams 失效
    用于测量流体流中静态压力和湍流强度的探头系统

    公开(公告)号：US5233865A

    公开(公告)日：1993-08-10

    申请号：US690440

    申请日：1991-04-24

    Applicant: Vernon J. Rossow

    Inventor： Vernon J. Rossow

    IPC: G01F1/46 ,  G01P5/165

    CPC classification number: G01F1/46 ,  G01P5/165

    Abstract: A method and apparatus for measuring time-averaged static or ambient pressure and turbulence intensity in a turbulent stream involve placing a plurality of probes in the stream. Each probe responds in a different manner to characteristics of the fluid stream, preferably as a result of having varying cross sections. The responses from the probes are used to eliminate unwanted components in the measured quantities for accurate determination of selected characteristics.

    Abstract translation: 用于测量湍流中的时间平均静态或环境压力和湍流强度的方法和装置包括在流中放置多个探针。 每个探针以不同的方式响应流体流的特性，优选地由于具有变化的横截面。 来自探针的响应用于消除所测量的不需要的组分以精确确定所选择的特征。

    Averaging pitot probe
    70.
    发明授权
    Averaging pitot probe 失效
    平均波头探测

    公开(公告)号：US5123288A

    公开(公告)日：1992-06-23

    申请号：US595597

    申请日：1990-10-10

    Applicant: Robert B. Tench ,  David A. Churchill

    Inventor： Robert B. Tench ,  David A. Churchill

    IPC: G01F1/46 ,  G01P5/165

    CPC classification number: G01F1/46 ,  G01P5/165

    Abstract: To measure speed of gas flow along a pipe a flowmeter is used comprising a gas flow sensor connected by tubing with an averaging pitot probe formed by first and second tubes of circular cross-section disposed side by side and closed at their one and the same ends and mounted in a gas tight manner in the wall of the pipe. The two tubes are identical in shape and dimensions and each has four circular holes through its tube wall. All the holes are of the same shape and size, and each has a diameter in the range 0.4 mm to 1.00 mm. The internal diameter of each tube is at least 1.59 mm, and the ratio of the cross-sectional area of each tube to the cross-sectional area of each hole is at least 9:1. The positions of the holes in one tube are identical to the positions of the holes in the other tube except that the holes in the first tube face directly upstream with respect to the gas flow whilst the holes in the second tube face directly downstream. With respect to an imaginary plane P between the tubes, the first tube is symmetrical with the second tube. The speed of gas flow to be measured is preferably in the range of 0.3 to 10.00 m/s, and the gas is at or about atomspheric pressure.

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