JPS57139618A - Flowmeter utilizing karman's vortex street - Google Patents

Flowmeter utilizing karman's vortex street

Info

Publication number
JPS57139618A
JPS57139618A JP56025770A JP2577081A JPS57139618A JP S57139618 A JPS57139618 A JP S57139618A JP 56025770 A JP56025770 A JP 56025770A JP 2577081 A JP2577081 A JP 2577081A JP S57139618 A JPS57139618 A JP S57139618A
Authority
JP
Japan
Prior art keywords
center
manner
fluid
duct
section
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
JP56025770A
Other languages
Japanese (ja)
Inventor
Tatsuya Ichihara
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.)
Azbil Corp
Original Assignee
Azbil Corp
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 Azbil Corp filed Critical Azbil Corp
Priority to JP56025770A priority Critical patent/JPS57139618A/en
Publication of JPS57139618A publication Critical patent/JPS57139618A/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
    • G01F1/3209—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
    • G01F1/3218—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 bluff body design

Landscapes

  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • General Physics & Mathematics (AREA)

Abstract

PURPOSE:To make it possible to measure flow of highly viscous fluid in small valume, by keeping a semi-circular orifice plate between upstream and downstream connecting flanges, and also by providing a surge detector on the downstream side in such a manner as to expose the tip section of the detecting member in the neighborhood of the center of a duct. CONSTITUTION:Between upstream and down stream connecting flanges 1a and 2a of a fluid duct, an orifice plate 5, which is provided with a pair of semi- circular flow paths 5c being symetrical with each other with a circle-crossing section on the center, is kept. On the downstream side of thus composed vortex generating device, an all-direction surge detector 6 is provided in such a manner that a screw section on the bottom end of a cylindrical main body 7 is screwed into a screw hole of a boss 8 provided on the wall of a piping 2, and a detecting rod 16 is arranged in such a manner that its tip section is exposed in the neighborhood of the center of the fluid duct in the piping 2. As it is possible, by doing so, to detect surge at high sensitivity in all directions, and therefore, it is possible to measure flow of fluid of high viscosity and low Reynolds number in small volume.
JP56025770A 1981-02-23 1981-02-23 Flowmeter utilizing karman's vortex street Pending JPS57139618A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP56025770A JPS57139618A (en) 1981-02-23 1981-02-23 Flowmeter utilizing karman's vortex street

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56025770A JPS57139618A (en) 1981-02-23 1981-02-23 Flowmeter utilizing karman's vortex street

Publications (1)

Publication Number Publication Date
JPS57139618A true JPS57139618A (en) 1982-08-28

Family

ID=12175072

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56025770A Pending JPS57139618A (en) 1981-02-23 1981-02-23 Flowmeter utilizing karman's vortex street

Country Status (1)

Country Link
JP (1) JPS57139618A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01148912A (en) * 1987-12-04 1989-06-12 Agency Of Ind Science & Technol Ring vortex flowmeter
EP3855132A1 (en) * 2020-01-21 2021-07-28 Hosiden Corporation Fluid sensing device

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01148912A (en) * 1987-12-04 1989-06-12 Agency Of Ind Science & Technol Ring vortex flowmeter
EP3855132A1 (en) * 2020-01-21 2021-07-28 Hosiden Corporation Fluid sensing device

Similar Documents

Publication Publication Date Title
US3572117A (en) Bluff body flowmeter
EP0277121A1 (en) Fluid flowmeter.
DK136690A (en) FLOW METER FOR FLUID
US3874234A (en) Vortex shedding flowmeter
KR900010357A (en) Karman Vortex Flowmeter
KR900003165B1 (en) Reaction mass flow meter
JPS6047973B2 (en) Flowmeter
JPS57139618A (en) Flowmeter utilizing karman's vortex street
GB2177204A (en) Measurement of fluid flows
US3927564A (en) Vortex type flowmeter
KR860002004A (en) Flow meter for measuring the flow of liquid
US2182280A (en) Static pressure measuring device
JPS57139619A (en) Vortex flow detecting device
US4572004A (en) Fluid flow meter for measuring the rate of fluid flow in a conduit
JPS57113318A (en) Flow meter
JPS5523497A (en) Karman vortex flow meter
DK0565851T3 (en) Measuring values for determining the flow rate of a flowing liquid
JPS5530625A (en) Liquid meter
ATE104765T1 (en) ULTRASONIC GAS/LIQUID FLOWMETER.
US3421372A (en) Fluid-flow metering means
GB1482699A (en) Flowmeters
JPS5953490B2 (en) Movable orifice flowmeter
JPS5250263A (en) Device for measuring flow velocities
RU2057295C1 (en) Flowmeter
SU892215A1 (en) Turbine flowmeter