CN2630802Y - Magnetic suspension wide-range turbine flow sensor - Google Patents
Magnetic suspension wide-range turbine flow sensor Download PDFInfo
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- CN2630802Y CN2630802Y CN 03257987 CN03257987U CN2630802Y CN 2630802 Y CN2630802 Y CN 2630802Y CN 03257987 CN03257987 CN 03257987 CN 03257987 U CN03257987 U CN 03257987U CN 2630802 Y CN2630802 Y CN 2630802Y
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Abstract
The utility model discloses a magnetic suspension wide measurement range turbine flow sensor with simple structure, high measurement precision, wide measurement range. The utility model can be realized through the following technical scheme: bracing frame is disposed in the shell and is concentric with main body. The center of the bracing frame disposes internal hole which inner wall arranges external magnetic ring pressed and matched in the hole and axis disposed therein. The week surface of the two ends of the axis disposes internal magnetic ring which is fixed at the axis through clip spring internal magnetic ring. Impeller are connected fixedly with the middle axis and thrust plate are connected with the two ends of the axis. The service life of the utility model is increased 3 to 5 times. The limitation of the large flow measurement can be improved and the measurement range can be widened. The utility model is simple in structure, high in measurement precision and has good maintainability.
Description
Technical field
The utility model relates to the flow measurement field, more particularly, relates to a kind of turbine flow transducer.
Background technology
Turbine flow transducer is widely used in metallurgy, oil, and industrial or agricultural such as chemical industry are measured in the field of flow.Its reliability of operation, economy and life-span directly have influence on the development of national economy and benefit.In operational process, owing to be subjected to the axial thrust of fluid simultaneously, impeller rotation, and the effect of the factor such as influence each other of sound parts, the working condition of impeller and bearing is very complicated.
Its body of turbo flow meter commonly used at present is to have the 1G18Ni9Ti material to make, and its blade is 2G13.Its objective is flow signal is passed through this conduct of 2G13 to the metering digital display meter, and the critical component of support blade rotation is a wimet yG8 bearing.Axle also is the y68 wimet that adopts, and axle and the tolerance clearance of bearing are determining the size and the life-span of the initiating flow of its turbine, are determining that its measurement range (generally being 1: 10～1: 15) is the ratio of initiating flow and maximum flow.Because this turbine has movable member, in operational process, certainly lead to the friction between axle and the axle sleeve like this.Usually after work half a year to one year, measuring accuracy will descend, and the accuracy that influence is measured must remove turbine and deliver to measurement unit and carry out verification from the metering pipeline, will influence the gage work that it is competent at like this, cause unnecessary expenditures to unit.
The utility model content
The purpose of this utility model is in order to overcome the deficiencies in the prior art, and a kind of simple in structure, measuring accuracy is high, measurement range is wide magnetic levitation wide-range turbine flow transducer is provided.
The utility model magnetic levitation wide-range turbine flow transducer, be achieved by following technical proposals, be provided with bracing frame and concentric in the shell with main body, the support frame as described above center is provided with endoporus, described endoporus inwall is provided with outer magnetic ring, and outer magnetic ring press fit in the hole, is provided with axle in the hole, described axle two ends side face is provided with internal magnetic ring, is fixed on the axle by the jump ring internal magnetic ring.The axle middle part is fixedly connected with impeller, and the axle two ends are connected with thrust plate.
Described bracing frame connects in shell by collar.Described outer magnetic ring is the 3-6 sheet.Internal magnetic ring is the 3-6 sheet.The fixedly connected ring flange of shell.
The utility model beneficial effect compared with prior art is, adopted maglev principle, its friction factor is descended as far as possible, show by a large amount of test findings, whirlpool its initiating flow of opinion flow sensor that adopts magnetic suspension bearing descends (friction force almost=0) greatly and measurement range is widened greatly, and the life-span has been improved 3～5 times; The limit of measuring big flow can improve, and measurement range is widened.The utility model is simple in structure, measuring accuracy is high, measurement range is wide, and has good maintainability.
Description of drawings
Fig. 1 is the utility model structural representation.
Embodiment
Below in conjunction with accompanying drawing the utility model is described further.
Shell 5 is fixed in ring flange 1 by snap ring 4, be provided with bracing frame 2 in the shell 5, bracing frame 2 is fixedlyed connected with shell 5 two ends by collar 3, shell 5 is concentric with bracing frame 2, bracing frame 2 centers are provided with endoporus, and the endoporus inwall is provided with outer magnetic ring 7, and outer magnetic ring 7 press fit in the hole, outer magnetic ring 7 is installed with interior hole circle wringing fit in the endoporus of bracing frame 2.Be provided with axle 10 in the endoporus, axle 10 two ends side faces are provided with internal magnetic ring 6, and internal magnetic ring 6 connects with axle by jump ring.Axle 10 middle parts are fixedly connected with impeller 8, become one after axle 10, impeller 8, internal magnetic ring 6 assemblings, and axle 10 two ends are connected with thrust plate 9.
When liquid flow, wheel rotation by amplifier with flow signal in secondary instrument, the numeral of carrying out flow shows.
The bearing of magnetic suspension turbine is according to repel each other the principle design that there is a natural attraction between the sexes of the magnetic material same sex.Outer magnetic ring is to have the magnetic material of n sheet (6 〉=n 〉=3) to form, and magnetic direction is the extremely interior N utmost point of outer S; Internal magnetic ring also is to have n sheet (6 〉=n 〉=3) magnetic material to form, and magnetic direction is the extremely interior S utmost point of outer N.Must not when magnetizing, direction make a mistake.So just formed magnetic direction radially.
When being put into inner ring in the outer ring, because the polarity of the interior circle of outer ring is N, and the polarity of the cylindrical of inner ring also is N.The principle of repelling each other according to the same sex like this, outer ring and inner ring put together the back and just produce the phenomenon of repelling mutually, and the axle in the concentric circles position has just hanged, and is in equilibrium state.The blade of turbine begins smooth rotation under the small motion of flow media.Long-term work does not have wear phenomenon yet and occurs.
It is as follows with the method for standard table test unit typical turbine sensor and magnetic suspension turbine sensor to be tested its result of comparison: (is example with the DN50 turbine)
From experimental data as can be seen, with the instrument coefficient basically identical of the turbine of two kinds of structures of bore, the linearity and repeatability all are better than typical turbine, but the initiating flow of magnetic suspension turbine descends greatly.Flow turbine sensor under flow at high speed is working properly, and measurement range is widened greatly: be increased to 1: 50 from 1: 10 (mainly being that the initiating flow descends).
Claims (5)
1. magnetic levitation wide-range turbine flow transducer, be provided with bracing frame in the shell, bracing frame is concentric with shell, the support frame as described above center is provided with endoporus, it is characterized in that, described endoporus inwall is provided with outer magnetic ring, be provided with axle in the endoporus, described axle two ends side face is provided with internal magnetic ring, and the axle middle part is fixedly connected with impeller, and the axle two ends are connected with thrust plate.
2. magnetic levitation wide-range turbine flow transducer according to claim 1 is characterized in that described bracing frame is connected with shell by collar.
3. magnetic levitation wide-range turbine flow transducer according to claim 1 is characterized in that described outer magnetic ring is the 3-6 sheet.
4. magnetic levitation wide-range turbine flow transducer according to claim 1 is characterized in that described internal magnetic ring is the 3-6 sheet.
5. magnetic levitation wide-range turbine flow transducer according to claim 1 is characterized in that, the fixedly connected ring flange of described shell.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03257987 CN2630802Y (en) | 2003-07-04 | 2003-07-04 | Magnetic suspension wide-range turbine flow sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03257987 CN2630802Y (en) | 2003-07-04 | 2003-07-04 | Magnetic suspension wide-range turbine flow sensor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2630802Y true CN2630802Y (en) | 2004-08-04 |
Family
ID=34295629
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 03257987 Expired - Fee Related CN2630802Y (en) | 2003-07-04 | 2003-07-04 | Magnetic suspension wide-range turbine flow sensor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2630802Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101819050B (en) * | 2009-12-11 | 2012-02-08 | 北京工业大学 | High-sensitivity turbine flowmeter for vehicle |
| CN105158497A (en) * | 2015-09-10 | 2015-12-16 | 重庆市北碚区德宇仪表元件有限公司 | Magnetic suspension rotating speed sensor |
| CN105865540A (en) * | 2016-04-28 | 2016-08-17 | 重庆市北碚区德宇仪表元件有限公司 | Turbine sensor structure adopting permanent magnet maglev |
-
2003
- 2003-07-04 CN CN 03257987 patent/CN2630802Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101819050B (en) * | 2009-12-11 | 2012-02-08 | 北京工业大学 | High-sensitivity turbine flowmeter for vehicle |
| CN105158497A (en) * | 2015-09-10 | 2015-12-16 | 重庆市北碚区德宇仪表元件有限公司 | Magnetic suspension rotating speed sensor |
| CN105158497B (en) * | 2015-09-10 | 2018-02-13 | 重庆市北碚区德宇仪表元件有限公司 | Magnetic suspension speed probe |
| CN105865540A (en) * | 2016-04-28 | 2016-08-17 | 重庆市北碚区德宇仪表元件有限公司 | Turbine sensor structure adopting permanent magnet maglev |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |