JPS5717864A - Flow speed meter - Google Patents

Flow speed meter

Info

Publication number
JPS5717864A
JPS5717864A JP9173580A JP9173580A JPS5717864A JP S5717864 A JPS5717864 A JP S5717864A JP 9173580 A JP9173580 A JP 9173580A JP 9173580 A JP9173580 A JP 9173580A JP S5717864 A JPS5717864 A JP S5717864A
Authority
JP
Japan
Prior art keywords
vortex
fluid
current speed
heating wire
flow
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
JP9173580A
Other languages
Japanese (ja)
Inventor
Masayoshi Mizote
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 JP9173580A priority Critical patent/JPS5717864A/en
Publication of JPS5717864A publication Critical patent/JPS5717864A/en
Pending 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
    • G01P5/01—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

  • Engineering & Computer Science (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Measuring Volume Flow (AREA)

Abstract

PURPOSE:To prevent a heating wire from damage by providing a heating element inside a vortex generating object and detecting a current speed from a flow caused by Karman's vortex taking place in the vortex generation object. CONSTITUTION:A pole type vortex generating object 13 provided with a vertical slit against the flow of fluid is set inside a pipe line 12. In the down stream of this vortex generating object 13, Karman's vortex 14 takes place the generating cycle of which is in proportion to the flow speed. When the fluid strikes the vortex generating object 13, the vortex 14 separates from its side face to go toward the down stream. Then, the pressure decreases by separation of the vortex 14 and the fluid in the slit moves to the vortex generating side. Since the vortex is generated alternately in both side, the current speed V of the fluid running across a heating wire 5 changes with the frequency proportional to the current speed in the pipeline. This change means the change in the resistance value of the heating wire 5, which is detected in a brige circuit, and the current speed is found.
JP9173580A 1980-07-07 1980-07-07 Flow speed meter Pending JPS5717864A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP9173580A JPS5717864A (en) 1980-07-07 1980-07-07 Flow speed meter

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP9173580A JPS5717864A (en) 1980-07-07 1980-07-07 Flow speed meter

Publications (1)

Publication Number Publication Date
JPS5717864A true JPS5717864A (en) 1982-01-29

Family

ID=14034767

Family Applications (1)

Application Number Title Priority Date Filing Date
JP9173580A Pending JPS5717864A (en) 1980-07-07 1980-07-07 Flow speed meter

Country Status (1)

Country Link
JP (1) JPS5717864A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5614681A (en) * 1995-04-26 1997-03-25 Mitsubishi Denki Kabushiki Kaisha Karman vortex flow meter
US5708214A (en) * 1995-04-21 1998-01-13 Mitsubishi Denki Kabushiki Kaisha Karman vortex flow meter
US5728946A (en) * 1996-02-28 1998-03-17 Mitsubishi Denki Kabushiki Kaisha Karman vortex flow meter

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5708214A (en) * 1995-04-21 1998-01-13 Mitsubishi Denki Kabushiki Kaisha Karman vortex flow meter
US5614681A (en) * 1995-04-26 1997-03-25 Mitsubishi Denki Kabushiki Kaisha Karman vortex flow meter
US5728946A (en) * 1996-02-28 1998-03-17 Mitsubishi Denki Kabushiki Kaisha Karman vortex flow meter
US5908991A (en) * 1996-02-28 1999-06-01 Mitsubishi Denki Kabushiki Kaisha Karman vortex flow meter

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