CN202033059U - Permanent magnet type hole-shrinkage flow sensor - Google Patents
Permanent magnet type hole-shrinkage flow sensor Download PDFInfo
- Publication number
- CN202033059U CN202033059U CN2011201331963U CN201120133196U CN202033059U CN 202033059 U CN202033059 U CN 202033059U CN 2011201331963 U CN2011201331963 U CN 2011201331963U CN 201120133196 U CN201120133196 U CN 201120133196U CN 202033059 U CN202033059 U CN 202033059U
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- China
- Prior art keywords
- measuring tube
- measuring
- undergauge
- flow sensor
- shrinkage
- 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.)
- Expired - Fee Related
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Abstract
The utility model discloses a permanent magnet type hole-shrinkage flow sensor which comprises a cylindrical measuring tube body; a sensing coil is arranged inside the measuring tube body, an electrode is embedded into the inner wall of the measuring tube body, and the sensing coil and the electrode are respectively connected with a converter. The measuring tube body is provided with a hole-shrinkage cavity, the cross section of the cavity is in a semicircular shape or a flat square shape, and the hole-shrinkage ratio of the cross section of the cavity is of 1:2. The permanent magnet type hole-shrinkage flow sensor adopts the measuring tube body in a hole-shrinkage structure, widens the measuring range of water flow rate, facilitates measuring low-flow signals, increases the measuring insensitivity and accuracy, reduces water leakage rate, and presents new prospect for renewal of measuring water meters in water feeding/discharging and centralized heat supplying industry.
Description
Technical field
The utility model relates to flow measurement instrument, particularly relates to the constant magnetic undergauge sensor of measuring conducting liquid flow instrument.
Background technology
The flowmeter of water supply industry use at present adopts mechanical rotor water gauge and Electromagnetic Flow instrument more.
The machinery rotor water gauge drives the rotation of counter gear by the wing wheel that rotates in current, and reaches the flow that shows water.Because mechanical part rotates and produces friction, and makes the continuous loss of mechanical part, therefore, there is the fragile and high problem of water leak rate of parts in rotor water gauge.The Electromagnetic Flow instrument does not have mechanical gyro unit, can partly solve the flimsy problem of parts that rotor water gauge exists.
The Electromagnetic Flow instrument is an electromagnetic flowmeter, by detect the electric signal that the conductive fluid medium flows and produces in magnetic field, measures the flow that fluid media (medium) passes through.Electromagnetic flowmeter comprises flow sensor and converter, and flow sensor is the inner cylindric measuring tube that inductive coil and inwall mosaic electrode are housed, and inductive coil is connected with converter respectively with electrode.Water body flows alternating magnetic field that the cutting inductive coil produces and produces induced voltage signal in the measuring tube, voltage signal is relevant with water volume flow rate, the electrode measurement water body voltage signal that inlays by the measuring tube inwall, and then obtain water flow, and by the display numeral demonstration that is connected with converter.
Electromagnetic flowmeter is measured water flow by measuring the induced voltage signal relevant with water volume flow rate, when water volume flow rate hour, voltage signal with regard to a little less than.Therefore, the water meter of existing electromagnetic flowmeter exists the flow of littler water volume flow rate can not accurately measure the problem high with the water leak rate, makes the important indicator that the water leak rate becomes influences water undertaking's economic benefit.
Summary of the invention
Promote the use of existing problem at existing machinery rotor water gauge and electromagnetic flowmeter at water supply industry, the utility model is released the constant magnetic undergauge flow sensor of new structure, its purpose is to utilize the measuring tube with undergauge inner chamber body to improve sensitivity to the low speed flow measurement, reduces the water leak rate.
The constant magnetic undergauge flow sensor that the utility model is related comprises cylindric measuring tube, and measuring tube has the inner chamber body of undergauge, and the undergauge of inner chamber xsect is than being 1:2.The undergauge of inner chamber xsect is than being the ratio of undergauge rear interior cavity xsect with the area of the round cavity xsect that does not have undergauge, and measuring tube inner chamber xsect is deltiod or semicircle.
Inductive coil is equipped with in measuring tube inside, measuring tube inwall mosaic electrode, and inductive coil is connected with converter respectively with electrode.Water body flows alternating magnetic field that the cutting inductive coil produces and produces induced voltage signal in the measuring tube, the electrode measurement water body voltage signal that the measuring tube inwall inlays, and then obtain water flow, again by the display numeral demonstration that is connected with converter.
The constant magnetic undergauge flow sensor that the utility model is related, adopted undergauge than being the undergauge structure of 1:2, increased the water volume flow rate measurement range, help measuring the low discharge signal, measurement sensitivity and precision have been improved, reduced the water leak rate, for the update of plumbing and central heating industry metering water meter represents new prospect.
Description of drawings
Fig. 1 is a constant magnetic undergauge flow sensor measuring tube external structure synoptic diagram;
Fig. 2 is a constant magnetic undergauge flow sensor measuring tube schematic cross-section.
Description of symbols among the figure:
1, measuring tube 2, inner chamber body
3, inductive coil 4, electrode.
Embodiment
Now in conjunction with the accompanying drawings the technical solution of the utility model is described further.
Fig. 1 and Fig. 2 have shown basic structure of the present utility model, have shown that measuring tube inner chamber xsect is the basic structure of the undergauge flow sensor of deltiod.
As shown in the figure, the related constant magnetic undergauge flow sensor of the utility model comprises cylindric measuring tube 1, and measuring tube 1 has the inner chamber body 2 of undergauge, and the xsect of inner chamber body 2 is a deltiod, and the undergauge of inner chamber xsect is than being 1:2.Inductive coil 3 is equipped with in measuring tube 1 inside, measuring tube 1 inwall mosaic electrode 4.
The related constant magnetic undergauge flow sensor of the utility model is connected on the feed pipe, current are process from the inner chamber body 2 that measuring tube 1 interior xsect is a deltiod, cut the alternating magnetic field of inductive coil 3 generations and produce induced voltage signal, the electrode 4 that measuring tube 1 inwall inlays is measured the water body voltage signal, and then the acquisition water flow, show by the display numeral that is connected with converter again.
Claims (3)
1. a constant magnetic undergauge flow sensor comprises cylindric measuring tube, it is characterized in that measuring tube has the inner chamber body of undergauge, and the undergauge of inner chamber xsect is than being 1:2; Inductive coil is equipped with in measuring tube inside, measuring tube inwall mosaic electrode, and inductive coil is connected with converter respectively with electrode.
2. constant magnetic undergauge flow sensor according to claim 1 is characterized in that the inner chamber xsect of described measuring tube undergauge inner chamber body is a deltiod.
3. constant magnetic undergauge flow sensor according to claim 1 is characterized in that, the inner chamber xsect of described measuring tube undergauge inner chamber body is semicircle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201331963U CN202033059U (en) | 2011-04-29 | 2011-04-29 | Permanent magnet type hole-shrinkage flow sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201331963U CN202033059U (en) | 2011-04-29 | 2011-04-29 | Permanent magnet type hole-shrinkage flow sensor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202033059U true CN202033059U (en) | 2011-11-09 |
Family
ID=44895353
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011201331963U Expired - Fee Related CN202033059U (en) | 2011-04-29 | 2011-04-29 | Permanent magnet type hole-shrinkage flow sensor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202033059U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102538883A (en) * | 2012-01-19 | 2012-07-04 | 上海华强浮罗仪表有限公司 | Electromagnetic flowmeter |
| CN105157767A (en) * | 2015-05-22 | 2015-12-16 | 姜跃炜 | Electromagnetic flow transducer |
-
2011
- 2011-04-29 CN CN2011201331963U patent/CN202033059U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102538883A (en) * | 2012-01-19 | 2012-07-04 | 上海华强浮罗仪表有限公司 | Electromagnetic flowmeter |
| CN105157767A (en) * | 2015-05-22 | 2015-12-16 | 姜跃炜 | Electromagnetic flow transducer |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20111109 Termination date: 20140429 |