CN102538883A - Electromagnetic flowmeter - Google Patents
Electromagnetic flowmeter Download PDFInfo
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- CN102538883A CN102538883A CN2012100163160A CN201210016316A CN102538883A CN 102538883 A CN102538883 A CN 102538883A CN 2012100163160 A CN2012100163160 A CN 2012100163160A CN 201210016316 A CN201210016316 A CN 201210016316A CN 102538883 A CN102538883 A CN 102538883A
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- sensor
- straight section
- middle straight
- electromagnetic flowmeter
- column structure
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Abstract
The invention discloses an electromagnetic flowmeter which comprises a meter head set, a sensor and a sensor electrode. The electromagnetic flowmeter is characterized in that the sensor carries out reshaping on a flow field of measured fluid, and the inner cavity of the sensor is divided into two connecting ends (at the two ends of the inner cavity), a middle straight section (in the middle of the inner cavity) and transition sections (among the middle straight section and the two connecting ends); the middle straight section is in a flat column structure, the upper and lower surfaces of the flat column structure are planar, and the two sides of the flat column structure are arced; the connecting ends are respectively provided with a disc-shaped flange, and the flanges are connected with a measured pipeline by bolts; the transition sections are respectively in a trumpet-shaped conical surface structure, the large ends of the transition sections are connected with the flanges, and the small ends of the transition sections are connected with the middle straight section which is in a flat column structure; and two electrodes of the sensor are arranged on the inner side of the two side arc cylindrical surfaces of the flat column structure. By using the electromagnetic flowmeter disclosed by the invention, the application accuracy of a high-precision electromagnetic flowmeter in a long-time running state is effectively ensured.
Description
Technical field
The present invention relates to a kind of flowmeter, particularly disclose a kind of electromagnetic flowmeter, be 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 objective of the invention is existing technology is improved, disclose a kind of electromagnetic flowmeter, designed a kind of new sensor inner-cavity structure, can measure accurately minimum velocity and complicated chaotic flow field.
The present invention is achieved in that a kind of 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.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 invention has the beneficial effects as follows:
(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 a structural representation of the present invention.
Fig. 2 is sensor inner chamber side structure of the present invention and Flow Field Distribution synoptic diagram.
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 present invention 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 present invention 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 |
|---|---|---|---|
| CN2012100163160A CN102538883A (en) | 2012-01-19 | 2012-01-19 | Electromagnetic flowmeter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012100163160A CN102538883A (en) | 2012-01-19 | 2012-01-19 | Electromagnetic flowmeter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102538883A true CN102538883A (en) | 2012-07-04 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012100163160A Pending CN102538883A (en) | 2012-01-19 | 2012-01-19 | Electromagnetic flowmeter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102538883A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2362103Y (en) * | 1999-03-19 | 2000-02-02 | 哈尔滨工大虹普仪表有限责任公司 | Capacitance probe vortex street flow sensor |
| JP2003329697A (en) * | 2002-05-10 | 2003-11-19 | Yamatake Corp | Flow sensor |
| CN1818570A (en) * | 2006-03-23 | 2006-08-16 | 熊辉 | Integrated flow sensor device |
| CN202033059U (en) * | 2011-04-29 | 2011-11-09 | 天津市宇宏达科技发展有限公司 | Permanent magnet type hole-shrinkage flow sensor |
| CN202494480U (en) * | 2012-01-19 | 2012-10-17 | 上海华强浮罗仪表有限公司 | Electromagnetic flow meter |
-
2012
- 2012-01-19 CN CN2012100163160A patent/CN102538883A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2362103Y (en) * | 1999-03-19 | 2000-02-02 | 哈尔滨工大虹普仪表有限责任公司 | Capacitance probe vortex street flow sensor |
| JP2003329697A (en) * | 2002-05-10 | 2003-11-19 | Yamatake Corp | Flow sensor |
| CN1818570A (en) * | 2006-03-23 | 2006-08-16 | 熊辉 | Integrated flow sensor device |
| CN202033059U (en) * | 2011-04-29 | 2011-11-09 | 天津市宇宏达科技发展有限公司 | Permanent magnet type hole-shrinkage flow sensor |
| CN202494480U (en) * | 2012-01-19 | 2012-10-17 | 上海华强浮罗仪表有限公司 | Electromagnetic flow meter |
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|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20120704 |