CN202494480U - Electromagnetic flow meter - Google Patents
Electromagnetic flow meter Download PDFInfo
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- CN202494480U CN202494480U CN201220023949XU CN201220023949U CN202494480U CN 202494480 U CN202494480 U CN 202494480U CN 201220023949X U CN201220023949X U CN 201220023949XU CN 201220023949 U CN201220023949 U CN 201220023949U CN 202494480 U CN202494480 U CN 202494480U
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Abstract
The utility model relates to an electromagnetic flow meter which comprises a meter head group, a sensor and sensor electrodes and is characterized in that the sensor is used for reshaping a flow field of fluid to be measured, a sensor inner cavity is divided into connection ends at two ends, a middle straight section and a transition section between the middle straight section and the two connection ends. The middle straight section adopts a flat column structure with an upper plane, a lower plane and two lateral circular arcs. The connection ends are round flanges which are connected with a pipeline to be measured through bolts, the transition section is of a conical face structure in a horn shape, the large end of the transition section is connected with the flanges, and the small end of the transition section is connected with the middle straight section of the flat column structure. The two sensor electrodes are arranged on the inner sides of the circular column faces on two sides of the flat column structure. The electromagnetic flow meter effectively ensures using accuracy of the high accuracy electromagnetic flow meter in long time operation.
Description
Technical field
The utility model relates to a kind of flowmeter, particularly discloses a kind of electromagnetic flowmeter, is applicable to the measurement of interior conducting liquid of closed conduct and slurries.
Background technology
Electromagnetic flowmeter is the novel flow measurement instrument that develops rapidly along with development of electronic technology the sixties.It is processed according to Faraday's electromagnetic induction law, is used for measuring the volumetric flow rate of conductive fluid.Because its unique advantage has been widely used in industries such as chemical industry, city water supply and sewage, food, medical and health, laboratory at present.For example, measure corrosive liquids such as various acid, alkali, salt, various industrial sewages, paper pulp, mud etc.
But; But development along with development of electronic technology and product technology; The electromagnetic flowmeter of 0.2 grade of a large amount of high measurement accuracy has been released in market, and it is fashionable that this type flowmeter is used for the high-acruracy survey field, installs, uses the variation of the fluid condition that brings just very important to the amount of measuring of influence.
Summary of the invention
The purpose of the utility model is that existing technology is improved, and discloses a kind of electromagnetic flowmeter, has designed a kind of new sensor inner-cavity structure, can measure accurately minimum velocity and complicated chaotic flow field.
The utility model is achieved in that a kind of electromagnetic flowmeter; Comprise gauge outfit group, sensor and sensor electrode, it is characterized in that: described sensor is to the flow field shaping of detected fluid, and the sensor inner chamber is divided into the transition section between two ends link, middle straight section and middle straight section and two links; It is the plane that said middle straight section adopts upper and lower; Both sides are the flat rod structure of circular arc, and described link is the disc flange, and flange is connected with tested pipeline with bolt; Described transition section is flaring cone structure; Big end joint flange, small end connects the middle straight section of flat rod structure, and it is inboard that two electrodes of sensor are arranged on flat rod structure both sides circular arc cylinder.Detected fluid is flowed through in the sensor inner chamber, and its flow field is that disperse at two ends, the middle shape of concentrating.
The beneficial effect of the utility model is:
(1) fluid is flowed through and is shown to be shunk by instrument inner chamber current limliting behind the body, is the flow velocity increase of nearly electrode near the tube wall place, and the local induced signal of electrode increases, and increased the signal to noise ratio (S/N ratio) of low flow velocity small-signal, thereby such instrument can have very wide range ratio.
(2) the fluid limit wall flow velocity at center measuring tube place improves, and unlikelyly causes deposition, delays the fouling generation, can guarantee to measure the long-term stability in cross section, keeps the accuracy of measurement of instrument.
(3) flow field after the new rectification reduces the susceptibility that outside flow field changes, thereby reduces the conditional request of installing, and reduces the error that flow distortion causes.
Description of drawings
Fig. 1 is the utility model structural representation.
Fig. 2 is the sensor inner chamber side structure and the Flow Field Distribution synoptic diagram of the utility model.
Among the figure: 1, gauge outfit group; 2, middle straight section inner chamber; 3, flange; 4, curved surface cavity; 5, electrode; 6, sensor.
Embodiment
According to attaching Fig. 1 and 2, a kind of electromagnetic flowmeter of the utility model comprises gauge outfit group 1, middle straight section inner chamber 2, flange 3, curved surface cavity 4, electrode 5 and sensor 6.Sensor 6 is made up of middle straight section inner chamber 2, curved surface cavity 4 and electrode 5; Sensor 6 inner chambers are divided into the transition section between two ends link, middle straight section and middle straight section and two links; It is the plane that middle straight section adopts upper and lower, and both sides are the flat rod structure of circular arc, and link is a disc flange 3; Big end joint flange 3, small end connects the middle straight section of flat rod structure.The boundary of flange 3 is connected with columnar structured and tested pipeline; Flange 3 usefulness bolts are connected with tested pipeline; Transition section is flaring cone structure, and with curved surface cavity 4 transition, electrode 5 is respectively in the left and right sides of interlude inner chamber 2 between cylinder and the middle straight section inner chamber 2.Straight section inner chamber 2 both sides circular arc cylinders were inboard in the middle of two electrodes 5 of sensor were arranged on.Gauge outfit group 1 adopts the signal converter of traditional electrical magnetic flowmeter.The flow field shaping of 6 pairs of detected fluid of sensor, detected fluid are flowed through in the sensor inner chamber, and its flow field is that disperse at two ends, the middle shape of concentrating.The utility model is combined as a whole rectifier and sensor, and measured medium is measured accurately.
Claims (2)
1. an electromagnetic flowmeter comprises gauge outfit group, sensor and sensor electrode, it is characterized in that: described sensor is to the flow field shaping of detected fluid; The sensor inner chamber is divided into the transition section between two ends link, middle straight section and middle straight section and two links, and it is the plane that said middle straight section adopts upper and lower, and both sides are the flat rod structure of circular arc; Described link is the disc flange; Flange is connected with tested pipeline with bolt, and described transition section is flaring cone structure, holds joint flange greatly; Small end connects the middle straight section of flat rod structure, and it is inboard that two electrodes of sensor are arranged on flat rod structure both sides circular arc cylinder.
2. according to the described a kind of electromagnetic flowmeter of claim 1, it is characterized in that: detected fluid is flowed through in the sensor inner chamber, and its flow field is that disperse at two ends, the middle shape of concentrating.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201220023949XU CN202494480U (en) | 2012-01-19 | 2012-01-19 | Electromagnetic flow meter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201220023949XU CN202494480U (en) | 2012-01-19 | 2012-01-19 | Electromagnetic flow meter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202494480U true CN202494480U (en) | 2012-10-17 |
Family
ID=47000705
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201220023949XU Expired - Fee Related CN202494480U (en) | 2012-01-19 | 2012-01-19 | Electromagnetic flow meter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202494480U (en) |
Cited By (1)
| 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 |
-
2012
- 2012-01-19 CN CN201220023949XU patent/CN202494480U/en not_active Expired - Fee Related
Cited By (1)
| 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 |
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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: 20121017 Termination date: 20140119 |