CN207923203U - A kind of Optical Fiber Vortex-Shedding Flowmeter - Google Patents
A kind of Optical Fiber Vortex-Shedding Flowmeter Download PDFInfo
- Publication number
- CN207923203U CN207923203U CN201820500510.9U CN201820500510U CN207923203U CN 207923203 U CN207923203 U CN 207923203U CN 201820500510 U CN201820500510 U CN 201820500510U CN 207923203 U CN207923203 U CN 207923203U
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- vortex
- sensor fibre
- optical fiber
- flowmeter
- light source
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Abstract
The utility model provides a kind of Optical Fiber Vortex-Shedding Flowmeter, which solve existing fiber vortex-shedding meter is complicated and the relatively low technical problem of measurement accuracy, it is equipped with flowmeter shell, flowmeter shell is internally provided with vortex shedder, vortex shedder side is equipped with sensor fibre, sensor fibre is arranged perpendicular to fluid flow direction, the both ends of sensor fibre pass through flowmeter shell to the outside of flowmeter shell, one end of sensor fibre is equipped with light source, the light that light source is sent out is transferred to sensor fibre by condenser lens, the emergent light of the sensor fibre other end is transferred to photelectric receiver through slit, the output end of photelectric receiver is connected with signal processor, the utility model can be widely used for the measurement of fluid flow.
Description
Technical field
The utility model is related to flow rate test technical fields, more particularly, to a kind of Optical Fiber Vortex-Shedding Flowmeter.
Background technology
Flow measurement is in industrial production, energy measurement, environmental protection, communications and transportation, biotechnology, military engineering and science
The fields such as research occupy critical positions, and currently used flowmeter is to measure power, rotating speed or vibration letter by electric transducer mostly
Number, then input analytical equipment and calculated, finally obtain flow number, vortex-shedding meter is because wider, accurate with range ability
It spends the features such as higher and simple in structure and is favored；However electrical type sensor there are poor sealing, easily electric leakage, it is perishable,
The problems such as by electromagnetic interference, fibre optical sensor are sensed and are transmitted using optical fiber, therefore by vortex street principle and Fibre Optical Sensor skill
Art combine can the effective solution above problem, existing Optical Fiber Vortex-Shedding Flowmeter is complicated, and measurement accuracy is relatively low.
Invention content
The utility model aiming at existing fiber vortex-shedding meter is complicated and the relatively low technical problem of measurement accuracy,
A kind of simple in structure and higher Optical Fiber Vortex-Shedding Flowmeter of measurement accuracy is provided.
For this purpose, the utility model is equipped with flowmeter shell, flowmeter shell is internally provided with vortex shedder, and vortex street occurs
Body side is equipped with sensor fibre, and sensor fibre is arranged perpendicular to fluid flow direction, and the both ends of sensor fibre pass through flowmeter shell
Body to the outside of flowmeter shell, one end of sensor fibre is equipped with light source, and the light that light source is sent out is transferred to by condenser lens
The emergent light of photosensitive fibre, the sensor fibre other end is transferred to photelectric receiver through slit, and the output end of photelectric receiver is connected with
Signal processor；Vortex shedder includes trapezoid cylinder, and trapezoid cylinder both ends are respectively equipped with fluoran stream surface and lee side, fluoran stream surface and
Lee side is cylindrical surface, and fluoran stream surface and the upper and lower end face of trapezoid cylinder junction are respectively equipped with seamed edge.
Preferably, photelectric receiver includes photoelectric switching circuit, filter circuit and shaping circuit.
Preferably, signal processor includes data processing module and display module.
Preferably, the horizontal distance of sensor fibre and vortex shedder is 10cm.
Preferably, sensor fibre is silica fibre.
Preferably, light source is he-Ne laser.
The utility model is simple in structure, vortex street principle is effectively combined with optical fiber sensing technology, by vortex shedder
Fluoran stream surface and lee side are disposed as cylindrical surface, prevent from being mingled with more fibre object in detected fluid being deposited in vortex shedder
Fluoran stream surface or lee side, generate additional measurement error, influence measurement accuracy；Light source letter is received by the way that silica fibre is arranged
Breath, optical fiber transmitance is up to 95% or more；The optical signal received is converted into electric signal by the way that photelectric receiver is arranged, and right
Electric signal is filtered, Shape correction；Data processing is carried out to electric signal by setting signal processor, it will using display module
The flow information of measurement is shown, practical and convenient.
Description of the drawings
Fig. 1 is the structural schematic diagram of the utility model；
Fig. 2 is the front view of the utility model；
Fig. 3 is the utility model optical signal prosessing principle schematic.
Symbol description in figure：
1. flowmeter shell；2. vortex shedder；3. sensor fibre；4. fluid flow direction；5. light source；6. focusing saturating
Mirror；7. slit；8. photelectric receiver；9. signal processor；10. trapezoid cylinder；11. fluoran stream surface；12. lee side；13. seamed edge；
801. photoelectric switching circuit；802. filter circuit；803. shaping circuit；901. data processing module；902. display module.
Specific implementation mode
Specific embodiment of the present utility model is described in detail with reference to the accompanying drawings.
As depicted in figs. 1 and 2, the utility model is equipped with flowmeter shell 1, and flowmeter shell 1 is internally provided with vortex street hair
Raw body 2, vortex shedder 2 are used to generate vortex street that is strong and stablizing, and vortex shedder 2 includes trapezoid cylinder 10, trapezoid cylinder
10 both ends are respectively equipped with fluoran stream surface 11 and lee side 12, and fluoran stream surface 11 and lee side 12 are cylindrical surface, are prevented in detected fluid
It is mingled with more fibre object to be deposited on the fluoran stream surface 11 or lee side 12 of vortex shedder 2, generates additional measurement error,
Influence measurement accuracy；Fluoran stream surface 11 and the upper and lower end face of 10 junction of trapezoid cylinder are respectively equipped with seamed edge 13, can force vortex point
It is synchronous from seamed edge 13, ensure the stability of vortex.
The side of vortex shedder 2 is equipped with sensor fibre 3, and sensor fibre 3 is arranged perpendicular to fluid flow direction 4, passes through
The vibration frequency of sensor fibre 3 is measured to measure the frequency of vortex street, sensor fibre 3 and the horizontal distance of vortex shedder 2 are
10cm, it is more strong which can be such that whirlpool occurs, and the both ends of sensor fibre 3 pass through flowmeter shell 1 to flowmeter shell 1
Outside, sensor fibre 3 are silica fibre, and silica fibre transmission wavelength wider range, optical fiber transmitance is up to 95% or more.
One end of sensor fibre 3 is equipped with light source 5, and light source 5 is he-Ne laser, the light line focus lens 6 that light source 5 is sent out
It is coupled to sensor fibre 3, the emergent light of the other end of sensor fibre 3 is transferred to photelectric receiver 8 through slit 7.
As shown in figure 3, photelectric receiver 8 includes photoelectric switching circuit 801, filter circuit 802 and shaping circuit 803, light
Power conversion circuit 801 is for converting optical signals to electric signal, using silicon phototriode as optical detection device；Filter circuit
802 are amplified signal using universal amplifier 741, to filter off high-frequency signal；Shaping circuit 803 is by comparing device
Sinusoidal signal is converted to square-wave signal output by LM339.
The output end of shaping circuit 803 is connected with signal processor 9, and signal processor 9 includes 901 He of data processing module
Display module 902, data processing module 901 is using MCS-51 series monolithics W78E58B at the electric signal that receives
After reason, the flow information of measurement is shown through display module 902, display module 902 uses LCM12232ZK liquid crystal displays
Module can directly display Chinese figure, practical and convenient.
When measurement, fluid to be measured is entered along fluid flow direction 4 in flowmeter shell 1, the light letter that light source 5 is sent out
Number, it is coupled to sensor fibre 3 by condenser lens 6, fiber perpendicular fluid flow direction 4 passes through flowmeter shell 1, fiber exit
Light is transferred to photelectric receiver 8 through slit 7, and photoelectric switching circuit 801 converts optical signals to electric signal in photelectric receiver 8,
Then filtered circuit 802 and shaping circuit 803 are filtered, are output to signal processor 9 after shaping, in signal processor 9
After data processing module 901 handles electric signal, the information such as the flow of measured fluid are obtained, it is aobvious through display module 902
It shows to come, for users to use.
Only as described above, only specific embodiment of the utility model, when the utility model cannot be limited with this
The range of implementation, therefore the displacement of its equivalent assemblies, or according to equivalent variations made by the utility model patent protection domain and change,
It all should still belong to the scope that the utility model claims book is covered.
Claims (6)
1. a kind of Optical Fiber Vortex-Shedding Flowmeter is equipped with flowmeter shell, the flowmeter shell is internally provided with vortex shedder,
The vortex shedder side is equipped with sensor fibre, and the sensor fibre is arranged perpendicular to fluid flow direction, the sense light
Fine both ends pass through the flowmeter shell to the outside of flowmeter shell, and one end of the sensor fibre is equipped with light source, special
Sign is that the light that the light source is sent out is transferred to the sensor fibre by condenser lens, and the sensor fibre other end goes out
It penetrates light and is transferred to photelectric receiver through slit, the output end of the photelectric receiver is connected with signal processor；The vortex street hair
Raw body includes trapezoid cylinder, and the trapezoid cylinder both ends are respectively equipped with fluoran stream surface and lee side, the fluoran stream surface and back of the body stream
Face is cylindrical surface, and the fluoran stream surface and the upper and lower end face of the trapezoid cylinder junction are respectively equipped with seamed edge.
2. Optical Fiber Vortex-Shedding Flowmeter according to claim 1, it is characterised in that the photelectric receiver includes opto-electronic conversion
Circuit, filter circuit and shaping circuit.
3. Optical Fiber Vortex-Shedding Flowmeter according to claim 1, it is characterised in that the signal processor includes data processing
Module and display module.
4. Optical Fiber Vortex-Shedding Flowmeter according to claim 1, it is characterised in that the sensor fibre occurs with the vortex street
The horizontal distance of body is 10cm.
5. Optical Fiber Vortex-Shedding Flowmeter according to claim 1, it is characterised in that the sensor fibre is silica fibre.
6. Optical Fiber Vortex-Shedding Flowmeter according to claim 1, it is characterised in that the light source is he-Ne laser.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820500510.9U CN207923203U (en) | 2018-04-10 | 2018-04-10 | A kind of Optical Fiber Vortex-Shedding Flowmeter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820500510.9U CN207923203U (en) | 2018-04-10 | 2018-04-10 | A kind of Optical Fiber Vortex-Shedding Flowmeter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207923203U true CN207923203U (en) | 2018-09-28 |
Family
ID=63595484
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820500510.9U Expired - Fee Related CN207923203U (en) | 2018-04-10 | 2018-04-10 | A kind of Optical Fiber Vortex-Shedding Flowmeter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207923203U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114270186A (en) * | 2019-08-23 | 2022-04-01 | 株式会社佐竹 | Microorganism testing device and method thereof |
| CN115096380A (en) * | 2022-07-11 | 2022-09-23 | 江苏伟屹电子有限公司 | Measuring method and measuring equipment of vortex shedding flowmeter with vibration interference |
-
2018
- 2018-04-10 CN CN201820500510.9U patent/CN207923203U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114270186A (en) * | 2019-08-23 | 2022-04-01 | 株式会社佐竹 | Microorganism testing device and method thereof |
| CN115096380A (en) * | 2022-07-11 | 2022-09-23 | 江苏伟屹电子有限公司 | Measuring method and measuring equipment of vortex shedding flowmeter with vibration interference |
| CN115096380B (en) * | 2022-07-11 | 2023-10-24 | 江苏伟屹电子有限公司 | Measuring method and measuring equipment of vortex shedding flowmeter resistant to vibration interference |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180928 |