JPS5642110A - Detector for flow velocity or flow rate - Google Patents

Detector for flow velocity or flow rate

Info

Publication number
JPS5642110A
JPS5642110A JP11794079A JP11794079A JPS5642110A JP S5642110 A JPS5642110 A JP S5642110A JP 11794079 A JP11794079 A JP 11794079A JP 11794079 A JP11794079 A JP 11794079A JP S5642110 A JPS5642110 A JP S5642110A
Authority
JP
Japan
Prior art keywords
flow
signal
wires
shaped
fitted
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
JP11794079A
Other languages
Japanese (ja)
Other versions
JPS5921485B2 (en
Inventor
Toru Kita
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Nissan Motor Co Ltd
Original Assignee
Nissan Motor Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Nissan Motor Co Ltd filed Critical Nissan Motor Co Ltd
Priority to JP54117940A priority Critical patent/JPS5921485B2/en
Priority to DE19803034936 priority patent/DE3034936A1/en
Priority to GB8029830A priority patent/GB2061505A/en
Publication of JPS5642110A publication Critical patent/JPS5642110A/en
Publication of JPS5921485B2 publication Critical patent/JPS5921485B2/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
    • G01P5/00—Measuring speed of fluids, e.g. of air stream; Measuring speed of bodies relative to fluids, e.g. of ship, of aircraft
    • G01P5/10—Measuring speed of fluids, e.g. of air stream; Measuring speed of bodies relative to fluids, e.g. of ship, of aircraft by measuring thermal variables
    • G01P5/12—Measuring speed of fluids, e.g. of air stream; Measuring speed of bodies relative to fluids, e.g. of ship, of aircraft by measuring thermal variables using variation of resistance of a heated conductor
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
    • G01F1/00—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow
    • G01F1/05—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by using mechanical effects
    • G01F1/20—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by using mechanical effects by detection of dynamic effects of the flow
    • G01F1/32—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by using mechanical effects by detection of dynamic effects of the flow using swirl flowmeters
    • G01F1/3209—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by using mechanical effects by detection of dynamic effects of the flow using swirl flowmeters using Karman vortices
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
    • G01F1/00—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow
    • G01F1/05—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by using mechanical effects
    • G01F1/20—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by using mechanical effects by detection of dynamic effects of the flow
    • G01F1/32—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by using mechanical effects by detection of dynamic effects of the flow using swirl flowmeters
    • G01F1/325—Means for detecting quantities used as proxy variables for swirl
    • G01F1/3273—Means for detecting quantities used as proxy variables for swirl for detecting fluid speed oscillations by thermal sensors
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
    • G01F1/00—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow
    • G01F1/05—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by using mechanical effects
    • G01F1/20—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by using mechanical effects by detection of dynamic effects of the flow
    • G01F1/32—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by using mechanical effects by detection of dynamic effects of the flow using swirl flowmeters
    • G01F1/325—Means for detecting quantities used as proxy variables for swirl
    • G01F1/3287—Means for detecting quantities used as proxy variables for swirl circuits therefor
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
    • G01P5/00—Measuring speed of fluids, e.g. of air stream; Measuring speed of bodies relative to fluids, e.g. of ship, of aircraft
    • G01P5/01—Measuring speed of fluids, e.g. of air stream; Measuring speed of bodies relative to fluids, e.g. of ship, of aircraft by using swirlflowmeter

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Engineering & Computer Science (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Measuring Volume Flow (AREA)
  • Details Of Flowmeters (AREA)

Abstract

PURPOSE: To enable a high-precision measurement in accordance with the flow by a method wherein a rod-shaped vortex generator having two wires arranged symmetrically is placed in a pipeline to provide the functions of both a hot-wire current meter and a Karman vortex flowmeter, which are used selectively.
CONSTITUTION: The wires 6, 7 are fitted to L-shaped and T-shaped support members 4, 5 of the vortex generator 1, and electrodes 4a, 4b, 5a are fitted to the wires 6, 7. When heating circuits 9, 10 function to heat the wires 6, 7, variable voltage signals V6, V7 corresponding to the voltages between the terminals are outputted. The first detecting circuit 11 picks up a signal Q corresponding to the differential signal V7-V6, and outputs a signal Q' which is synchronous with the period of the generation of the Karman vortex. The second detecting circuit 12 outputs an analog signal P' corresponding to the average flow velocity which is obtained by averaging the voltage signals V6, V7. The signals Q', P' are changed over by a change-over circuit 13 in accordance with the pulsating condition of the flow, and a predetermined display is provided. Accordingly, the flow rate can always be measured accurately, that is, it is measured through the frequency or period of the pulse signal Q' when the flow is steady, and through the level of the analog signal P' when the flow is pulsating.
COPYRIGHT: (C)1981,JPO&Japio
JP54117940A 1979-09-17 1979-09-17 flow rate or flow rate detector Expired JPS5921485B2 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
JP54117940A JPS5921485B2 (en) 1979-09-17 1979-09-17 flow rate or flow rate detector
DE19803034936 DE3034936A1 (en) 1979-09-17 1980-09-16 FLOW MEASURING DEVICE
GB8029830A GB2061505A (en) 1979-09-17 1980-09-16 Fluid Flow Meter

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP54117940A JPS5921485B2 (en) 1979-09-17 1979-09-17 flow rate or flow rate detector

Publications (2)

Publication Number Publication Date
JPS5642110A true JPS5642110A (en) 1981-04-20
JPS5921485B2 JPS5921485B2 (en) 1984-05-21

Family

ID=14723979

Family Applications (1)

Application Number Title Priority Date Filing Date
JP54117940A Expired JPS5921485B2 (en) 1979-09-17 1979-09-17 flow rate or flow rate detector

Country Status (3)

Country Link
JP (1) JPS5921485B2 (en)
DE (1) DE3034936A1 (en)
GB (1) GB2061505A (en)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58158517A (en) * 1982-03-15 1983-09-20 Mitsubishi Electric Corp Device for measuring flow rate or flow speed
JPS58158518A (en) * 1982-03-15 1983-09-20 Mitsubishi Electric Corp Device for measuring flow rate or flow speed
JPS58208623A (en) * 1982-05-28 1983-12-05 Mitsubishi Electric Corp Vortex flowmeter
JPS6172638U (en) * 1984-10-18 1986-05-17
JPS61132717U (en) * 1985-02-07 1986-08-19
JPS6238032U (en) * 1985-08-23 1987-03-06
JPH0662478U (en) * 1993-02-12 1994-09-02 住友電装株式会社 Waterproof connector
JPH081255U (en) * 1996-01-22 1996-08-09 矢崎総業株式会社 Channel integrated connector
CN102175286A (en) * 2011-01-19 2011-09-07 南京航空航天大学 Signal processing method for turbine flow meter

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5827015A (en) * 1981-08-11 1983-02-17 Mitsubishi Electric Corp Airflow measuring device for automobile
JPS5832327U (en) * 1981-08-19 1983-03-02 三菱電機株式会社 Karman vortex flowmeter
DE3309404A1 (en) * 1983-03-16 1984-09-20 Robert Bosch Gmbh, 7000 Stuttgart Device for measuring the mass flow rate of a flowing medium
US4517735A (en) * 1983-10-28 1985-05-21 Airsensors, Inc. Apparatus and method for tensioning resistive wire
GB2177204B (en) * 1985-06-26 1988-09-14 British Gas Plc Measurement of fluid flows
DE3637540A1 (en) * 1986-11-04 1988-05-05 Vdo Schindling DEVICE FOR DETERMINING THE FLOW DIRECTION
DE3732856A1 (en) * 1987-09-29 1989-04-06 Siemens Ag Intelligent air quantity meter
DE3916056A1 (en) * 1989-05-17 1990-11-22 Kuipers Ulrich Measuring mass and/or vol. throughflow and/or density and/or viscosity - using sensor and choke and/or baffle element to detect differential pressure of fluid
EP0811147A1 (en) * 1995-07-27 1997-12-10 Georg Fischer Rohrleitungssysteme AG Device for measuring the flow rate of a fluid in a pipe
US6386046B1 (en) 1999-09-28 2002-05-14 The Foxboro Company Method and system for characterizing pulsatile flow in a vortex flowmeter
DE102009029169B4 (en) * 2009-09-03 2021-11-04 Innovative Sensor Technology Ist Ag Thermal flow sensor
DE102011116282B4 (en) 2011-10-19 2013-07-04 Krohne Messtechnik Gmbh Method of operating a vortex flowmeter

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58158517A (en) * 1982-03-15 1983-09-20 Mitsubishi Electric Corp Device for measuring flow rate or flow speed
JPS58158518A (en) * 1982-03-15 1983-09-20 Mitsubishi Electric Corp Device for measuring flow rate or flow speed
JPS58208623A (en) * 1982-05-28 1983-12-05 Mitsubishi Electric Corp Vortex flowmeter
JPS6172638U (en) * 1984-10-18 1986-05-17
JPS61132717U (en) * 1985-02-07 1986-08-19
JPS6238032U (en) * 1985-08-23 1987-03-06
JPH0662478U (en) * 1993-02-12 1994-09-02 住友電装株式会社 Waterproof connector
JPH081255U (en) * 1996-01-22 1996-08-09 矢崎総業株式会社 Channel integrated connector
CN102175286A (en) * 2011-01-19 2011-09-07 南京航空航天大学 Signal processing method for turbine flow meter

Also Published As

Publication number Publication date
DE3034936A1 (en) 1981-04-02
GB2061505A (en) 1981-05-13
JPS5921485B2 (en) 1984-05-21

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