CN2839978Y - Vortex type electromagnetic flowmeter - Google Patents
Vortex type electromagnetic flowmeter Download PDFInfo
- Publication number
- CN2839978Y CN2839978Y CN 200520066382 CN200520066382U CN2839978Y CN 2839978 Y CN2839978 Y CN 2839978Y CN 200520066382 CN200520066382 CN 200520066382 CN 200520066382 U CN200520066382 U CN 200520066382U CN 2839978 Y CN2839978 Y CN 2839978Y
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- CN
- China
- Prior art keywords
- magnetic measurement
- straight pipeline
- measurement straight
- positive electrode
- non magnetic
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- Expired - Fee Related
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Abstract
The utility model discloses a vortex street type electromagnetic flowmeter, which comprises a sensor and a display instrument. The utility model is characterized in that the sensor comprises a permanent magnet, a reducing pipe, an eddy generating body, a positive electrode, a non-magnetic measurement straight pipeline, an insulating sheath and a sensor lead wire, wherein the permanent magnet is arranged on an outer wall of the non-magnetic measurement straight pipeline as a negative electrode at the upper part of a gap between the eddy generating body and the positive electrode, and is not in contact with a measured fluid; the reducing pipe is connected to the front end of the non-magnetic measurement straight pipeline in the direction that the fluid flows in; the eddy generating body is perpendicular to an axle wire of the non-magnetic measurement straight pipeline; the positive electrode is arranged at upper side of the horizontal direction of the non-magnetic measurement straight pipeline and is insulated with the non-magnetic measurement straight pipeline through the insulating sheath. The utility model fully utilizes the advantages of an electromagnetic flowmeter and a vortex street flowmeter, and the measurement precision and the interference rejection of the instrument can be increased; the measured pipeline is reduced through the reducing pipe, the starting flow speed of the instrument is reduced and range ratio is widened.
Description
Technical field
The utility model relates to a kind of pipeline conductive fluid flowmeter, relates to a kind of Scroll-tupe electromagnetic flowmeter specifically.
Background technology
Electromagnetic flowmeter is widely used in the pipeline type fluid measurement electromagnetic flowmeter survey precision height of prior art, good stability, but processing technology complexity, price height as pipeline conductive fluid flow rate calculation measurement instrument; And vortex shedding flow meter making production technology is simple, but measuring accuracy is difficult to improve, poor seismic behavior, and initiating flow velocity height, described defective value must improve.
The content of innovation and creation
The purpose of this utility model is at the deficiencies in the prior art, a kind of Scroll-tupe electromagnetic flowmeter is provided, the utility model can be on the basis than low production cost, improve the instrument anti-vibration resistance, reduce the initiating flow of measuring fluid, widen range ratio, thereby improve the overall measurement accuracy of instrument.
The technical solution of the utility model is such: a kind of Scroll-tupe electromagnetic flowmeter, comprise sensor, Displaying Meter, it is characterized in that sensor comprises: permanent magnet, reducer pipe, eddy generator, positive electrode, non magnetic measurement straight pipeline, insulating sheath and sensor lead;
Described permanent magnet, be installed in eddy generator and positive electrode gap top as on the non magnetic measurement straight pipeline outer wall of negative electrode or eddy generator inner but not be contacted with detected fluid;
Described reducer pipe is connected the non magnetic measurement straight pipeline front end of fluid inflow direction;
On the axis of described eddy generator perpendicular to non magnetic measurement straight pipeline;
Described positive electrode is installed in non magnetic measurement straight pipeline horizontal direction upside and insulate by insulating sheath and non magnetic measurement straight pipeline;
Described positive electrode is connected with sensor lead outside non magnetic measurement straight pipeline by insulating sheath;
According to the utility model of said structure, its feature also is, described permanent magnet profile can be fan-shaped, cylindricality or wedge shape.
The utility model Scroll-tupe electromagnetic flowmeter, the measurement positive electrode is enclosed in the non magnetic measurement straight pipeline inside as negative electrode, has effectively improved the antijamming capability of instrument.
Scroll-tupe electromagnetic flowmeter of the present utility model, put the reducer pipe 0.6-1.0 that to make non magnetic measurement straight pipeline diameter be the instrument inside nominal diameter doubly at front end, increased the speed that fluid passes through, efficiently solved existing vortex shedding flow meter and can not measure low flow velocity, shortcoming that the initiating flow velocity is high.
The utility model according to said structure, its beneficial effect is, the utility model is according to Faraday's electromagnetic induction law, the Karman vortex street principle is combined as a whole, when conductive fluid is flowed through measuring tube, produce the whirlpool row of asymmetry at the eddy generator rear, conductive liquid produces the induction electromotive force that is directly proportional with flow velocity when flowing through magnetic field, therefore the utility model instrument makes full use of electromagnetic flowmeter, the advantage of vortex shedding flow meter, the whirlpool row cutting magnetic line that utilizes the eddy generator downstream asymmetricly to produce produces electromotive force, strong in conjunction with electromagnetic flowmeter flow signal anti-shake performance, dwindle measuring channel by reducer pipe, avoid the high shortcoming of vortex shedding flow meter initiating flow velocity, realize the accurate measurement of pipeline fluid, the utility model has effectively improved the measuring accuracy of instrument, anti-vibration resistance, reduce the initiating flow velocity of instrument, widened range ratio.
Description of drawings
Below in conjunction with the drawings and the specific embodiments the utility model is described in detail.
Shown in Figure 1 is Scroll-tupe electromagnetic flowmeter axle sectional structure synoptic diagram.
Shown in Figure 2 is Scroll-tupe electromagnetic flowmeter section sectional structure synoptic diagram.
Permanent magnet in the drawings, 1; 2, reducer pipe; 3, eddy generator; 4, Displaying Meter; 5, positive electrode; 6, non magnetic measurement straight pipeline; 7, insulating sheath
Embodiment
As shown in Figure 1 and Figure 2, a kind of Scroll-tupe electromagnetic flowmeter, comprise sensor, Displaying Meter 4, it is characterized in that sensor comprises: permanent magnet 1, reducer pipe 2, eddy generator 3, positive electrode 5, non magnetic measurement straight pipeline 6, insulating sheath 7 and sensor lead;
Described permanent magnet 1, be installed in eddy generator 3 and top, positive electrode 5 gaps as on non magnetic measurement straight pipeline 6 outer walls of negative electrode or eddy generator 3 inner but not be contacted with detected fluid;
Described reducer pipe 2 is connected non magnetic measurement straight pipeline 6 front ends of fluid inflow direction;
On the axis of described eddy generator 3 perpendicular to non magnetic measurement straight pipeline 6;
Described positive electrode 5 is installed in non magnetic measurement straight pipeline 6 horizontal direction upsides and insulate by insulating sheath 7 and non magnetic measurement straight pipeline 6;
Described positive electrode 5 is connected (not shown) with sensor lead by insulating sheath 7 outside non magnetic measurement straight pipeline 6;
The utility model according to said structure is further characterized in that, outside the described permanent magnet 1 Shape can be for fan-shaped, cylindricality or wedge shape any;
The utility model vortex type electromagnetic flowmeter, positive electrode are enclosed in non-as negative electrode Magnetic Measurement straight pipeline inside, Effective Raise the antijamming capability of instrument.
Vortex type electromagnetic flowmeter of the present utility model is put a reducer pipe at front end and is made non magnetic survey Amount straight pipeline diameter is 0.6-1.0 times of instrument inside nominal diameter, has increased the speed that fluid passes through, Efficiently solve existing vortex-shedding meter and can not measure low flow velocity, shortcoming that the initiating flow velocity is high.
Claims (2)
1, a kind of Scroll-tupe electromagnetic flowmeter, comprise sensor, Displaying Meter (4), it is characterized in that sensor comprises: permanent magnet (1), reducer pipe (2), eddy generator (3), positive electrode (5), non magnetic measurement straight pipeline (6), insulating sheath (7) and sensor lead;
Described permanent magnet (1), be installed in eddy generator (3) and positive electrode (5) gap top as on non magnetic measurement straight pipeline (6) outer wall of negative electrode or eddy generator (3) inner but not be contacted with detected fluid;
Described reducer pipe (2) is connected non magnetic measurement straight pipeline (6) front end of fluid inflow direction;
On the axis of described eddy generator (3) perpendicular to non magnetic measurement straight pipeline (6);
Described positive electrode (5) is installed in non magnetic measurement straight pipeline (6) horizontal direction upside and insulate by insulating sheath (7) and non magnetic measurement straight pipeline (6);
Described positive electrode (5) is connected with sensor lead outside non magnetic measurement straight pipeline (6) by insulating sheath (7).
2, Scroll-tupe electromagnetic flowmeter according to claim 1, its feature also be, described permanent magnet (1) profile is any of fan-shaped, cylindricality or wedge shape.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520066382 CN2839978Y (en) | 2005-11-01 | 2005-11-01 | Vortex type electromagnetic flowmeter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520066382 CN2839978Y (en) | 2005-11-01 | 2005-11-01 | Vortex type electromagnetic flowmeter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2839978Y true CN2839978Y (en) | 2006-11-22 |
Family
ID=37427959
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200520066382 Expired - Fee Related CN2839978Y (en) | 2005-11-01 | 2005-11-01 | Vortex type electromagnetic flowmeter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2839978Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101334302B (en) * | 2007-06-29 | 2011-03-16 | 上海星空自动化仪表有限公司 | Heavy caliber electromagnetic vortex sjeddomg flowmeter |
| CN101398318B (en) * | 2007-09-24 | 2011-04-06 | 泉州日新流量仪器仪表有限公司 | Momentum type effusion meter based on magnetic thrust and flow measurement method |
| 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 |
-
2005
- 2005-11-01 CN CN 200520066382 patent/CN2839978Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101334302B (en) * | 2007-06-29 | 2011-03-16 | 上海星空自动化仪表有限公司 | Heavy caliber electromagnetic vortex sjeddomg flowmeter |
| CN101398318B (en) * | 2007-09-24 | 2011-04-06 | 泉州日新流量仪器仪表有限公司 | Momentum type effusion meter based on magnetic thrust and flow measurement method |
| 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 |
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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: 20061122 Termination date: 20101101 |