JPS5717864A - Flow speed meter - Google Patents
Flow speed meterInfo
- 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
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.
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)
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 |
-
1980
- 1980-07-07 JP JP9173580A patent/JPS5717864A/en active Pending
Cited By (4)
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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