CN204241041U - A kind of magnetic vortex street flowmeter - Google Patents
A kind of magnetic vortex street flowmeter Download PDFInfo
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- CN204241041U CN204241041U CN201420609839.0U CN201420609839U CN204241041U CN 204241041 U CN204241041 U CN 204241041U CN 201420609839 U CN201420609839 U CN 201420609839U CN 204241041 U CN204241041 U CN 204241041U
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Abstract
The utility model discloses a kind of magnetic vortex street flowmeter, comprise: eddy current spreader plate, magnetic, electrode, signal processing circuit, A/D converter, microprocessor, the utility model produces eddy current by eddy current spreader plate in body, the magnetic line of force of vortex fluid cutting magnetic, produce electromotive force, electrode induced potential, and pass through signal processing circuit, A/D converter, microprocessor can draw flow information, and signal is successively through amplifying circuit, export after filtering circuit, reduce the impact of interference noise, obtain the first-harmonic of flow velocity signal, and make the power of multiple interference noise reduce with bandwidth and reduce, improve signal to noise ratio (S/N ratio), improve the measuring accuracy of electromagnetic flowmeter.
Description
Technical field
The utility model relates to a kind of magnetic vortex street flowmeter.
Background technology
When inserting the cylinder in axis blunt form cross section vertical with direction of flow in the fluid flowed (swirl generating body), will produce in its downstream two row's inward turnings and interlaced vortex row, within the scope of certain flow, the cross frequence of vortex is directly proportional to post side liquid flow velocity.The cross frequence detecting eddy current can calculate flow velocity and the flow of fluid, and this is the vortex shedding flow meter usually adopting Karman vortex street principle.Around conductive fluid, arrange magnetic field, conductive fluid cutting magnetic line in magnetic field produces electromotive force, calculates the flow velocity of detected fluid with this, and this is the electromagnetic flowmeter adopting Faraday's electromagnetic induction law.At present, vortex shedding flow meter and electromagnetic flowmeter have become the more ripe product of technology, have been applied to the measurement of fluid.Vortex shedding flow meter is poor anti jamming capability in the application, measuring accuracy and the more difficult raising of accuracy.Though electromagnetic flowmeter precision is high, Large Diameter Pipeline is expensive, and range of application is limited.
Summary of the invention
In order to overcome the deficiencies in the prior art, the utility model provides a kind of magnetic vortex street flowmeter.
The utility model solves the technical scheme that its technical matters adopts:
A kind of magnetic vortex street flowmeter, comprising:
Eddy current spreader plate, this eddy current spreader plate is arranged on measures pipe fitting upstream, makes fluid produce rotating vortex;
Electrode, this electrode is arranged on measures pipe fitting side, the electromotive force produced for detecting vortex fluid cutting magnetic line in measurement pipe fitting;
Magnetic, this magnetic and electrode pair should be arranged;
Signal processing circuit, this signal processing circuit and Electrode connection, for the treatment of the electric potential signal detected by electrode;
A/D converter, this A/D converter is connected with signal processing circuit, for being digital signal by analog-signal transitions;
Microprocessor, this microprocessor is connected with A/D converter, is used for according to the potential calculation flow signal produced between described electrode;
Described signal processing circuit comprises amplifying circuit, filtering circuit, and signal exports successively after amplifying circuit, filtering circuit.
Also comprise a display, this display is connected with microprocessor.
Described microprocessor is preferably the MSP430 single-chip microcomputer of Hong Kong TI company or Dutch PHILIPS company 80C552 single-chip microcomputer.
Described A/D converter is the ICL7135 monolithic dual integ ration ADC of American I NTERSIL company.
The beneficial effects of the utility model are: the utility model produces eddy current by eddy current spreader plate in body, the magnetic line of force of vortex fluid cutting magnetic, produce electromotive force, electrode induced potential, and can flow information be drawn by signal processing circuit, A/D converter, microprocessor, and signal exports successively after amplifying circuit, filtering circuit, reduce the impact of interference noise, obtain the first-harmonic of flow velocity signal, and make the power of multiple interference noise reduce with bandwidth and reduce, improve signal to noise ratio (S/N ratio), improve the measuring accuracy of electromagnetic flowmeter.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the utility model is further illustrated.
Fig. 1 is structure principle chart of the present utility model.
Embodiment
With reference to the structure principle chart that Fig. 1, Fig. 1 are the utility model specific embodiments, as shown in the figure, a kind of magnetic vortex street flowmeter, comprising:
Eddy current spreader plate 2, this eddy current spreader plate 2 is arranged on measures pipe fitting upstream, makes fluid produce rotating vortex;
Electrode 1, this electrode 1 is arranged on measures pipe fitting side, the electromotive force produced for detecting vortex fluid cutting magnetic line in measurement pipe fitting;
Magnetic 3, this magnetic 3 is corresponding with electrode 1 to be arranged;
Signal processing circuit, this signal processing circuit is connected with electrode 1, for the treatment of the electric potential signal detected by electrode 1;
A/D converter, this A/D converter is connected with signal processing circuit, for being digital signal by analog-signal transitions;
Microprocessor, this microprocessor is connected with A/D converter, is used for according to the potential calculation flow signal produced between described electrode;
The utility model produces eddy current by eddy current spreader plate 2 in body, and the magnetic line of force of vortex fluid cutting magnetic 3, produces electromotive force, electrode 1 induced potential, and can draw flow information by signal processing circuit, A/D converter, microprocessor.
And described signal processing circuit comprises amplifying circuit, filtering circuit, signal exports successively after amplifying circuit, filtering circuit, namely filtering circuit carries out filtering to the output of signal amplification circuit, reduce the impact of interference noise, obtain the first-harmonic of flow velocity signal, and make the power of multiple interference noise reduce with bandwidth and reduce, improve signal to noise ratio (S/N ratio), improve the measuring accuracy of electromagnetic flowmeter.
The utility model also comprises a display, and this display is connected with microprocessor, for showing flow information.
As preferably, described microprocessor is preferably the MSP430 single-chip microcomputer of Hong Kong TI company or Dutch PHILIPS company 80C552 single-chip microcomputer.
As preferably, described A/D converter is the ICL7135 monolithic dual integ ration ADC of American I NTERSIL company.
Above better enforcement of the present utility model is illustrated; certainly; the utility model can also adopt form different from the embodiment described above; the equivalent conversion that those of ordinary skill in the art do under the prerequisite without prejudice to spirit of the present invention or change accordingly, all should belong in protection domain of the present utility model.
Claims (1)
1. a magnetic vortex street flowmeter, is characterized in that: comprising:
Eddy current spreader plate (2), this eddy current spreader plate (2) is arranged on measures pipe fitting upstream, makes fluid produce rotating vortex;
Electrode (1), this electrode (1) is arranged on measures pipe fitting side, the electromotive force produced for detecting vortex fluid cutting magnetic line in measurement pipe fitting;
Magnetic (3), this magnetic (3) is corresponding with electrode (1) to be arranged;
Signal processing circuit, this signal processing circuit is connected with electrode (1), for the treatment of the electric potential signal detected by electrode (1);
A/D converter, this A/D converter is connected with signal processing circuit, for being digital signal by analog-signal transitions;
Microprocessor, this microprocessor is connected with A/D converter, is used for according to the potential calculation flow signal produced between described electrode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420609839.0U CN204241041U (en) | 2014-10-22 | 2014-10-22 | A kind of magnetic vortex street flowmeter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420609839.0U CN204241041U (en) | 2014-10-22 | 2014-10-22 | A kind of magnetic vortex street flowmeter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204241041U true CN204241041U (en) | 2015-04-01 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420609839.0U Expired - Fee Related CN204241041U (en) | 2014-10-22 | 2014-10-22 | A kind of magnetic vortex street flowmeter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204241041U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104266688A (en) * | 2014-10-22 | 2015-01-07 | 中山欧麦克仪器设备有限公司 | High-accuracy electromagnetic eddy flow meter |
| CN105091955A (en) * | 2015-04-21 | 2015-11-25 | 侨健新能源科技（苏州）有限公司 | A vortex street flowmeter for coal mines |
| CN107179104A (en) * | 2017-05-10 | 2017-09-19 | 中国原子能科学研究院 | A kind of magneto liquid metal vortex-shedding meter and its application |
-
2014
- 2014-10-22 CN CN201420609839.0U patent/CN204241041U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104266688A (en) * | 2014-10-22 | 2015-01-07 | 中山欧麦克仪器设备有限公司 | High-accuracy electromagnetic eddy flow meter |
| CN105091955A (en) * | 2015-04-21 | 2015-11-25 | 侨健新能源科技（苏州）有限公司 | A vortex street flowmeter for coal mines |
| CN107179104A (en) * | 2017-05-10 | 2017-09-19 | 中国原子能科学研究院 | A kind of magneto liquid metal vortex-shedding meter and its application |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150401 Termination date: 20151022 |
|
| EXPY | Termination of patent right or utility model |