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    DIFFERENTIAL PRESSURE VORTEX FLOWMETER
    1.
    发明专利
    DIFFERENTIAL PRESSURE VORTEX FLOWMETER 未知

    公开(公告)号：DE3380705D1

    公开(公告)日：1989-11-16

    申请号：DE3380705

    申请日：1983-02-22

    Applicant: ROSEMOUNT INC

    Inventor： CORPRON GARY P ,  PAGEL ROY E

    IPC: G01F1/32 ,  G01L13/02

    Abstract: A differential pressure sensor (10) adapted specifically for use with vortex shedding flowmeters which can be used in small spaces, uses a bending beam (60) for providing an electrical signal proportional to differential pressures between two oppositely facing diaphragms (40A, 40B). The diaphragms deflect under differential pressure and cause the beam (60) to be bent. The diaphragms have low mass and have a support structure (43) between them, carrying spring clips (50) which load one end of the bending beam (60). The other end of the bending beam (60) is then supported so it cantilevers from its mounting or support (61, 62) and upon movement of the diaphragms under differential pressure the beam (60) will bend. The signal can be derived by using a bending element made of a piezoelectric "bimorph" beam, which provides a voltage output as it bends, a strain gauge sensor on a beam, or an optical sensor, such as a fine fiber which deflects and provides an optical output may be used, as well as similar devices. Preferably, the sensor is a piezoelectric bimorph beam because of the direct electrical signals provided, which result from bending of the beam (60).

    ROCKING BEAM VORTEX SENSOR
    6.
    发明专利
    ROCKING BEAM VORTEX SENSOR 未知

    公开(公告)号：AU616499B2

    公开(公告)日：1991-10-31

    申请号：AU3255289

    申请日：1989-04-07

    Applicant: ROSEMOUNT INC

    Inventor： CORPRON GARY P ,  KLEVEN LOWELL A

    IPC: G01F1/32 ,  G01F1/38

    Abstract: A vortex sensor used in a vortex flowmeter that has a single sensing diaphragm parallel to the direction of flow that is sensitive to differential pressures caused by vortices shed by a vortex shedding bar associated with the sensing diaphragm. A beam is attached to the sensing diaphragm and it transfers the deflecting motion of the sensing diaphragm due to differential pressures to a sensor external to the flow passageway. The sensor provides an output indicating motions of the beam caused by the beam pivoting when the sensing diaphragm deflects. The beam preferably is pivoted on a relatively rigid, fluid-tight isolator diaphragm with one end of the beam on the outside of the isolator diaphragm. The sensing diaphragm which is used to measure differential pressure rejects variations in the static pressure, that is, increases and decreases of the static pressure on both sides of the diaphragm, which is a common source of problems with existing vortex flowmeter sensors.

    SENSOR DE VORTICE DE BRAZO OSCILANTE.
    8.
    发明专利
    SENSOR DE VORTICE DE BRAZO OSCILANTE. 未知

    公开(公告)号：ES2010601A6

    公开(公告)日：1989-11-16

    申请号：ES8802828

    申请日：1988-09-15

    Applicant: ROSEMOUNT INC

    Inventor： KLEVEN LOWELL A ,  CORPRON GARY P

    IPC: G01F1/32 ,  G01F3/20

    Abstract: SENSOR DE VORTICE DE BRAZO OSCILANTE UTILIZADO EN UN CAUDALIMETRO DE VORTICES QUE TIENE UN DIAFRAGMA SENSOR UNICO PARALELO A LA DIRECCION DE FLUJO, QUE ES SENSIBLE A LAS DIFERENCIAS DE PRESION PRODUCIDAS POR LOS VORTICES GENERADOS POR UNA BARRA DE DERAMME EN VORTICES ASOCIADA CON EL DIAFRAGMA SENSOR. UN BRAZO ESTA FIJADO AL DIAFRAGMA SENSOR Y TRANSFIERE EL MOVIMIENTO DE DESVIACION DEL DIAFRAGMA SENSOR DEBIDO A LAS DIFERENCIAS DE PRESION A UN SENSOR EXTERNO AL PASO DE FLUJO. EL SENSOR PROPORCIONA UNA SALIDA QUE INDICA LOS MOVIMIENTOS DEL BRAZO PRODUCIDOS PORQUE EL BRAZO PIVOTA CUANDO SE DESVIA EL DIAFRAGMA SENSOR. EL BRAZO ESTA PIVOTADO PREFERIBLEMENTE EN UN DIAFRAGMA AISLADOR RELATIVAMENTE RIGIDO, ESTANCO A LOS FLUIDOS, CON UN EXTREMO DEL BRAZO EN EL EXTERIOR DEL DIAFRAGMA AISLADOR. EL DIAFRAGMA SENSOR QUE SE UTILIZA PARA MEDIR DIFERENCIAS DE PRESION RECHAZA LAS VARIACIONES EN LA PRESION ESTATICA, ES DECIR, LOS AUMENTOS Y DISMINUCIONES DE LA PRESION ESTATICA A AMBOS LADOS DEL DIAFRAGMA.

    VORTEX FLOWMETER BLUFF BODY
    9.
    发明专利
    VORTEX FLOWMETER BLUFF BODY 未知

    公开(公告)号：CA1190414A

    公开(公告)日：1985-07-16

    申请号：CA422619

    申请日：1983-03-01

    Applicant: ROSEMOUNT INC

    Inventor： CORPRON GARY P

    IPC: G01F1/32

    Abstract: VORTEX FLOWMETER BLUFF BODY A vortex flowmeter utilizes a bluff body or bar which creates vortices that are sufficiently stable and of sufficient strength to provide for pressure signals that are easily sensed, and at the same time achieves satisfactory linearity between the frequency of the vortices and the rate of flow past the sensor. The flowmeter is designed so that the same sensor arrangement for sensing the frequency of vortex generation can be used for flowmeters designed for a wide range of pipe or line sizes. By utilizing the cross section geometry of the bluff body or bar disclosed herein, the section of the body that is used for mounting the sensor is the same width, which is the critical dimension for sensor mounting, for line sizes from two inches (5.08 cm) to eight inches (20.32 cm) inclusive and line sizes from one inch (2.54 cm) to one and one-half inches (3.81 cm) inclusive. The ability to have a standard sensor for a number of different meter sizes reduces inventories and manufacturing costs, and also makes service of sensors easier. The flowmeter of the present invention not only permits the interchangeability of sensors across a wide range of pipe sizes, but also has good linearity, is easy to manufacture, and continues to operate reliably after extensive usage.

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