CN204241049U - A kind of electromagnetic flowmeter realizing measurement non-full pipe - Google Patents
A kind of electromagnetic flowmeter realizing measurement non-full pipe Download PDFInfo
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- CN204241049U CN204241049U CN201420610001.3U CN201420610001U CN204241049U CN 204241049 U CN204241049 U CN 204241049U CN 201420610001 U CN201420610001 U CN 201420610001U CN 204241049 U CN204241049 U CN 204241049U
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- magnetizing coil
- electromagnetic flowmeter
- full pipe
- electrode
- coil
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Abstract
The utility model discloses a kind of electromagnetic flowmeter realizing measuring non-full pipe, comprise the upper magnetizing coil be arranged on the upside of body, be arranged on the lower magnetizing coil on the downside of body, at least three symmetrical electrodes are respectively arranged with in the body left and right sides, described upper magnetizing coil and lower magnetizing coil are the coil of symmetrical same size, described upper magnetizing coil cover body segment angle be 30 °-45 °, different fluid level, the current signal produced each electrode is different, signal discrimination circuit is provided with in converter, to differentiate the signal obtained from electrode, and differentiate, flow during non-full pipe can be obtained, accuracy of detection is high, good stability, and electrode is provided with shielding case, reduce electromagnetic interference (EMI), the precision of further raising electromagnetic flowmeter.
Description
Technical field
The utility model relates to a kind of electromagnetic flowmeter realizing measuring non-full pipe.
Background technology
Traditional electrical magnetic flowmeter can only carry out flow measurement for full-section pipe-flow, and on-the-spot actual condition is comparatively complicated, mostly is non-full pipe situation, and especially in large diameter pipeline occasions such as municipal water supply and environment protection sewage process, non-full pipe operating mode is more general.In these application scenarios due to can not accurate-metering flow, cause very large economic loss to enterprise.
For solving the bottleneck that traditional electrical magnetic flowmeter is measured in non-full pipe occasion, each producer has released one after another non-full-tube electromagnetic flow meter, and measuring channel inner fluid height and then obtain circulation area while its universal principle is measurement flow velocity, both are multiplied and obtain flow.This kind of type structure is comparatively complicated in manufacturing process, relates to multiple detection and surveys element, add the potential leakage point of instrument itself and potential maintenance, in addition, the precision of liquid level measuring system is lower, affects the overall accuracy of flowmeter, is generally only 2 class precisions.
Summary of the invention
In order to overcome the deficiencies in the prior art, the utility model provides a kind of electromagnetic flowmeter realizing measuring non-full pipe.
The utility model solves the technical scheme that its technical matters adopts:
A kind of electromagnetic flowmeter realizing measurement non-full pipe, comprise and be arranged on upper magnetizing coil on the upside of body, be arranged on lower magnetizing coil on the downside of body, at least three symmetrical electrodes are respectively arranged with in the body left and right sides, described upper magnetizing coil and lower magnetizing coil are the coil of symmetrical same size, described upper magnetizing coil cover body segment angle be 30 °-45 °.
Described segment angle is 41 °.
Described body one-sided configuration has seven electrodes.
Described electrode is external to a converter by signal wire, and described electrode is provided with shielding case.
Signal discrimination circuit is provided with in described converter.
Signal processing circuit is provided with in described converter.
Described signal processing circuit comprises signal amplification circuit, filtering circuit, feedback circuit, and signal exports successively after signal amplification circuit, filtering circuit, feedback circuit.
The beneficial effects of the utility model are: a kind of electromagnetic flowmeter realizing measurement non-full pipe, comprise the upper magnetizing coil be arranged on the upside of body, be arranged on the lower magnetizing coil on the downside of body, at least three symmetrical electrodes are respectively arranged with in the body left and right sides, described upper magnetizing coil and lower magnetizing coil are the coil of symmetrical same size, described upper magnetizing coil cover body segment angle be 30 °-45 °, different fluid level, the current signal produced each electrode is different, signal discrimination circuit is provided with in converter, to differentiate the signal obtained from electrode, and differentiate, flow during non-full pipe can be obtained, accuracy of detection is high, good stability, and electrode is provided with shielding case, reduce electromagnetic interference (EMI), the precision of further raising electromagnetic flowmeter.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the utility model is further illustrated.
Fig. 1 is structural representation of the present utility model.
Embodiment
With reference to Fig. 1, Fig. 1 is the structural representation of the utility model specific embodiment, as shown in the figure, a kind of electromagnetic flowmeter realizing measurement non-full pipe, comprise the upper magnetizing coil 2 be arranged on the upside of body 1, be arranged on the lower magnetizing coil 3 on the downside of body 1, symmetrical at least three electrodes 4 are respectively arranged with in body 1 left and right sides, described upper magnetizing coil 2 and lower magnetizing coil 3 are the coil of symmetrical same size, described upper magnetizing coil 2 cover body 1 segment angle a be 30 °-45 °, through actual, the result obtained in detection is set, described segment angle a is 41 °, when described body 1 one-sided configuration has seven electrodes 4, accuracy of detection reaches optimum state, meet request for utilization, and cost control is ideal, described electrode 4 is external to converter by signal wire, different fluid level, the current signal produced each electrode is different, signal discrimination circuit is provided with in converter, to differentiate the signal obtained from electrode, and differentiate, flow during non-full pipe can be obtained, accuracy of detection is high, good stability, and electrode is provided with shielding case, reduce electromagnetic interference (EMI), the precision of further raising electromagnetic flowmeter.
As preferably, signal processing circuit is provided with in described converter, described signal processing circuit comprises signal amplification circuit, filtering circuit, feedback circuit, signal exports successively after signal amplification circuit, filtering circuit, feedback circuit, and namely filtering circuit carries out filtering to the output of signal amplification circuit, reduces 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.
In the present embodiment, described signal discrimination circuit, signal amplification circuit, filtering circuit, feedback circuit are all the circuit comparatively commonly used, and are not described further at this.
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. one kind can realize the electromagnetic flowmeter measuring non-full pipe, it is characterized in that: comprise the upper magnetizing coil (2) being arranged on body (1) upside, the lower magnetizing coil (3) being arranged on body (1) downside, symmetrical at least three electrodes (4) are respectively arranged with in body (1) left and right sides, described upper magnetizing coil (2) and lower magnetizing coil (3) be the coil of the same size of symmetry, described upper magnetizing coil (2) cover body (1) segment angle (a) be 30 °-45 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420610001.3U CN204241049U (en) | 2014-10-22 | 2014-10-22 | A kind of electromagnetic flowmeter realizing measurement non-full pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420610001.3U CN204241049U (en) | 2014-10-22 | 2014-10-22 | A kind of electromagnetic flowmeter realizing measurement non-full pipe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204241049U true CN204241049U (en) | 2015-04-01 |
Family
ID=52770531
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420610001.3U Expired - Fee Related CN204241049U (en) | 2014-10-22 | 2014-10-22 | A kind of electromagnetic flowmeter realizing measurement non-full pipe |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204241049U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104280079A (en) * | 2014-10-22 | 2015-01-14 | 中山欧麦克仪器设备有限公司 | Electromagnetic flowmeter with partially-filled-pipe measurement function |
-
2014
- 2014-10-22 CN CN201420610001.3U patent/CN204241049U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104280079A (en) * | 2014-10-22 | 2015-01-14 | 中山欧麦克仪器设备有限公司 | Electromagnetic flowmeter with partially-filled-pipe measurement function |
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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 |