JPS5513873A - Vortex flowmeter - Google Patents
Vortex flowmeterInfo
- Publication number
- JPS5513873A JPS5513873A JP8668678A JP8668678A JPS5513873A JP S5513873 A JPS5513873 A JP S5513873A JP 8668678 A JP8668678 A JP 8668678A JP 8668678 A JP8668678 A JP 8668678A JP S5513873 A JPS5513873 A JP S5513873A
- Authority
- JP
- Japan
- Prior art keywords
- vortex
- ultrasonic
- wave
- ultrasonic wave
- tube wall
- 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
Links
Abstract
PURPOSE: To improve measurement precision with undesired reflection, etc., reduced by detecting the generation frequency of a Karman vortex by an ultrasonic wave and by effetively absorbing the ultrasonic wave in a tube wall by a sound absorption mechansim provided to the inner surface of a flowmeter tube wall.
CONSTITUTION: A measured fluid, flowed in opening part 1, reaches straight tube part 2 passing through rectifier 11 and throttle part 9 with an arc-shaped throttle surface, so that vortex producing mechanism 3 will produce a Karman vortex street with regularity. Ultrasonic-wave transmitter 6 of ultrasonic-wave vortex detection mechanism 5 sends an ultrasonic wave and the Karman vortex is detected as a vortex generation signal by receiver 7 surrounded with tube wall 8. At this time, a sound absorptive material is stuck to inner wall surface 8 of the tube and mesh-shaped substance 16 is provided to the front surfaces of ultrasonic-wave transmitter 6 and receiver 7 at the same position as the sound absorptive material surface, so that high-precision vortex detection can be carried out with undesired reflection of an ultrasonic wave eliminated.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP53086686A JPS5819970B2 (en) | 1978-07-18 | 1978-07-18 | vortex flow meter |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP53086686A JPS5819970B2 (en) | 1978-07-18 | 1978-07-18 | vortex flow meter |
Related Child Applications (3)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP56074700A Division JPS57114814A (en) | 1981-05-18 | 1981-05-18 | Attachment device of ultrasonic vortex detecting mechanism for vortex flow meter |
JP56074701A Division JPS57114815A (en) | 1981-05-18 | 1981-05-18 | Sound absorbing material adding device for flow meter |
JP59239563A Division JPS60149920A (en) | 1984-11-15 | 1984-11-15 | Vortex flowmeter |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5513873A true JPS5513873A (en) | 1980-01-31 |
JPS5819970B2 JPS5819970B2 (en) | 1983-04-21 |
Family
ID=13893872
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP53086686A Expired JPS5819970B2 (en) | 1978-07-18 | 1978-07-18 | vortex flow meter |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5819970B2 (en) |
Cited By (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS57112919U (en) * | 1981-01-06 | 1982-07-13 | ||
JPS57149918A (en) * | 1981-03-12 | 1982-09-16 | Kawaguchiko Seimitsu Kk | Ultrasonic flow meter |
JPS5821120A (en) * | 1981-07-30 | 1983-02-07 | Oval Eng Co Ltd | Vortex flow meter |
JPS5826620U (en) * | 1981-08-12 | 1983-02-21 | オ−バル機器工業株式会社 | vortex flow meter |
JPS59135425U (en) * | 1983-02-28 | 1984-09-10 | 株式会社クボタ | Karman vortex current meter |
JPS61253422A (en) * | 1985-05-01 | 1986-11-11 | Hajime Onoda | Vortex flowmeter |
JPS61253423A (en) * | 1985-05-01 | 1986-11-11 | Hajime Onoda | Vortex flowmeter |
JPS62198716A (en) * | 1986-02-27 | 1987-09-02 | Hajime Onoda | Vortex flow meter |
KR100436620B1 (en) * | 2002-01-22 | 2004-06-22 | 주식회사 서진인스텍 | Cavity flowmeter |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5894658U (en) * | 1981-12-18 | 1983-06-27 | キヨ−ラク株式会社 | Cushioning material for packaging |
JPS58102471U (en) * | 1981-12-28 | 1983-07-12 | キヨ−ラク株式会社 | Cushioning material for packaging |
JPS59129758U (en) * | 1983-02-21 | 1984-08-31 | キヨ−ラク株式会社 | Cushioning material for packaging |
JPS59129757U (en) * | 1983-02-21 | 1984-08-31 | キヨ−ラク株式会社 | Cushioning material for packaging |
JPS6272956U (en) * | 1985-10-23 | 1987-05-11 |
-
1978
- 1978-07-18 JP JP53086686A patent/JPS5819970B2/en not_active Expired
Cited By (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS57112919U (en) * | 1981-01-06 | 1982-07-13 | ||
JPS57149918A (en) * | 1981-03-12 | 1982-09-16 | Kawaguchiko Seimitsu Kk | Ultrasonic flow meter |
JPH0126008B2 (en) * | 1981-03-12 | 1989-05-22 | Kawaguchiko Seimitsu Kk | |
JPS5821120A (en) * | 1981-07-30 | 1983-02-07 | Oval Eng Co Ltd | Vortex flow meter |
JPS5826620U (en) * | 1981-08-12 | 1983-02-21 | オ−バル機器工業株式会社 | vortex flow meter |
JPS6212254Y2 (en) * | 1981-08-12 | 1987-03-28 | ||
JPS59135425U (en) * | 1983-02-28 | 1984-09-10 | 株式会社クボタ | Karman vortex current meter |
JPS61253422A (en) * | 1985-05-01 | 1986-11-11 | Hajime Onoda | Vortex flowmeter |
JPS61253423A (en) * | 1985-05-01 | 1986-11-11 | Hajime Onoda | Vortex flowmeter |
JPS62198716A (en) * | 1986-02-27 | 1987-09-02 | Hajime Onoda | Vortex flow meter |
KR100436620B1 (en) * | 2002-01-22 | 2004-06-22 | 주식회사 서진인스텍 | Cavity flowmeter |
Also Published As
Publication number | Publication date |
---|---|
JPS5819970B2 (en) | 1983-04-21 |
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