JPS5754809A - Flow meter for karman vortex - Google Patents

Flow meter for karman vortex

Info

Publication number
JPS5754809A
JPS5754809A JP55129215A JP12921580A JPS5754809A JP S5754809 A JPS5754809 A JP S5754809A JP 55129215 A JP55129215 A JP 55129215A JP 12921580 A JP12921580 A JP 12921580A JP S5754809 A JPS5754809 A JP S5754809A
Authority
JP
Japan
Prior art keywords
piezo
vortex
vibrators
vibration
line
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.)
Pending
Application number
JP55129215A
Other languages
Japanese (ja)
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 JP55129215A priority Critical patent/JPS5754809A/en
Publication of JPS5754809A publication Critical patent/JPS5754809A/en
Pending legal-status Critical Current

Links

Classifications

    • 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
    • G01F1/3259—Means for detecting quantities used as proxy variables for swirl for detecting fluid pressure oscillations
    • G01F1/3266—Means for detecting quantities used as proxy variables for swirl for detecting fluid pressure oscillations by sensing mechanical vibrations

Abstract

PURPOSE:To eliminate influence exercised by a mechanical vibration and to obtain a flow meter for ka rma n vortex which has a high SN ratio, by a method wherein a function for detecting a mechanical vibration is created by placing a cover over either of first and second piezo-vibrators which are positioned in the proximity of each other, and the output of the two piezo-vibration are composed. CONSTITUTION:A vortex generator 2 is placed in a line 1, and a securing member 5 is located at the rear of the generator 2. Piezo-vibrators 11 and 12 are secured at a bed seat, set in a protruding manner at the securing member 5, through the medium of a retainer spacer 17 by means of a screw 13. The piezo-vibrator 12 is inserted into a hole 9 in a cover 8 having a streamline section and being fastened to the securing member 5. If the piezo-vibrators 11 and 12 are structured such that they are polarized in reverse direction to each other, vibrations produced by ka rma n vortex and the line 1 are exerted on the piezo-vibrator 11, and the vibration by the line 1 is exerted on the piezo-vibrator 12. The vibrations produced by the line 1 equalize is magnitude at the piezo-vibrators 11 and 12, and are in the reverse direction. This permits the detection of only the vibration produced by the ka rma n vortex.
JP55129215A 1980-09-19 1980-09-19 Flow meter for karman vortex Pending JPS5754809A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP55129215A JPS5754809A (en) 1980-09-19 1980-09-19 Flow meter for karman vortex

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP55129215A JPS5754809A (en) 1980-09-19 1980-09-19 Flow meter for karman vortex

Publications (1)

Publication Number Publication Date
JPS5754809A true JPS5754809A (en) 1982-04-01

Family

ID=15003975

Family Applications (1)

Application Number Title Priority Date Filing Date
JP55129215A Pending JPS5754809A (en) 1980-09-19 1980-09-19 Flow meter for karman vortex

Country Status (1)

Country Link
JP (1) JPS5754809A (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5095760A (en) * 1989-05-08 1992-03-17 Lew Hyok S Vortex flowmeter with dual sensors
US5223763A (en) * 1991-02-28 1993-06-29 Hughes Aircraft Company Wind power generator and velocimeter
US5247838A (en) * 1991-12-19 1993-09-28 Badger Meter, Inc. Double wing vortex flowmeter
US5347873A (en) * 1993-04-09 1994-09-20 Badger Meter, Inc. Double wing vortex flowmeter with strouhal number corrector
US5869772A (en) * 1996-11-27 1999-02-09 Storer; William James A. Vortex flowmeter including cantilevered vortex and vibration sensing beams
KR100782963B1 (en) 2006-06-26 2007-12-07 주식회사 메타켐 An apparatus for sensing the flow of fluid

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5095760A (en) * 1989-05-08 1992-03-17 Lew Hyok S Vortex flowmeter with dual sensors
US5223763A (en) * 1991-02-28 1993-06-29 Hughes Aircraft Company Wind power generator and velocimeter
US5247838A (en) * 1991-12-19 1993-09-28 Badger Meter, Inc. Double wing vortex flowmeter
US5347873A (en) * 1993-04-09 1994-09-20 Badger Meter, Inc. Double wing vortex flowmeter with strouhal number corrector
US5869772A (en) * 1996-11-27 1999-02-09 Storer; William James A. Vortex flowmeter including cantilevered vortex and vibration sensing beams
KR100782963B1 (en) 2006-06-26 2007-12-07 주식회사 메타켐 An apparatus for sensing the flow of fluid

Similar Documents

Publication Publication Date Title
BE900685A (en) WIPER BLADE WITH AIR DEFLECTIVE DEVICE.
JPS5754809A (en) Flow meter for karman vortex
DE59106354D1 (en) Solids separator for gas flows contaminated with solids.
EP0374073A3 (en) Mask shock absorbing system and method of using the same
JPS52151067A (en) Alarm watch
EP0354197A3 (en) An apparatus for purification of gases
NO155280C (en) APPARATUS FOR SEALING THE VALVE IN A VALVE BAG WITH AN ADHESIVE.
JPS5524276A (en) Reed valve
JPS5338944A (en) Abnormality detector
DK78185A (en) PROCEDURE FOR INCREASING THE GAS FLOW SPEED IN A REFLECTOR WITH A FLUIDIZED RENTAL CONTAINING MORE SOLID SUBSTANCES
KR910005035A (en) Eddy flowmeter
JPS5335587A (en) Detecting system of moving condition of moving body
JPS5212742A (en) Resistance construction against earthquake
JPS5290984A (en) Infrared gas analyzer
JPS5222940A (en) Hydraulic-type vibration testing device
JPS5397809A (en) Compressing and extending system
JPS52124478A (en) Reverse permeable separation apparatus
JPS5368275A (en) Ultrasonic flowmeter
NAZAROV et al. On integration of the Navier-Stokes equations for a case of axisymmetrical vortex flow of an incompressible fluid
JPS5341261A (en) Air inlet air flow detector
JPS53148489A (en) Stress detector
JPS5375572A (en) Purifier
VOLMIR et al. Behavior of elastic systems in separation streamline flow
JPS52143076A (en) Level detection circuit
JPS5323859A (en) Concentrating device for suspension