CN1056931A - A kind of magnetic floating-type turbo-conveyer for measuring flow - Google Patents
A kind of magnetic floating-type turbo-conveyer for measuring flow Download PDFInfo
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- CN1056931A CN1056931A CN 90103836 CN90103836A CN1056931A CN 1056931 A CN1056931 A CN 1056931A CN 90103836 CN90103836 CN 90103836 CN 90103836 A CN90103836 A CN 90103836A CN 1056931 A CN1056931 A CN 1056931A
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- annular permanent
- permanent magnet
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Abstract
The present invention is a kind of magnetic floating-type turbo-conveyer for measuring flow, by being placed on several on rotary blade and the bearing seat annular permanent magnet is constituted impeller supporting Permanent-magnet bearing, make impeller suspended in fluid, the realization wheel rotation does not have the machinery friction, there are not wearing and tearing, zerofriction force square, the assurance impeller is worked over a long time, has improved flow measurement precision and sensitivity, and the ratio of performance to price of turbo flow meter is improved greatly.
Description
The invention belongs to a kind of flow measurement device.Relate in particular to and utilize magnetic effect to realize the turbine transducer of magnetic levitation rotary blade.
The block bearing that current flux is measured with conventional turbine transducer rotary blade mostly adopts graphite-steel or steel-jewel, under the impeller high-speed rotation, and quick abrasion, the mechanical friction resistance square is big, has had a strong impact on the serviceable life and the high-precision maintenance of turbo flow meter.Recent two decades comes, much more more and more magnetic bearing is applied to airmanship, measuring technique and precision instrument technical elements, realize not having wearing and tearing, not having friction, service free, reliable operation, P305-P312 is introduced in for example " sliding bearing " (work such as West Germany O.R. Lang Ge, China Machine Press).Mchugh, (Mechanical Engineering, January 1965, P.45) have been described in detail the principle and the application of magnetic bearing for " the Magnetic and Electro static Beanings " of J.D..The major advantage of magnetic bearing is, the running accuracy height, and rotating speed is the highest, does not have wearing and tearing, and the life-span is long, and moment of friction is little, and temperature rise is little.For the large high-speed rotary machine, gas turbine for example, fan blowers etc. will use active magnetic bearing (being electromagnetic bearing), to small-sized or accurate rotary machine, use Permanent-magnet bearing.
The purpose of this invention is to provide a kind of flow turbine transducer, the rotary blade Permanent-magnet bearing, the pivoting leaf commentaries on classics is in suspended state under magneticaction, no matter rotary blade is in static or the high-speed rotation state, wheel rotation does not have friction, does not have wearing and tearing, no frictional resistance moment, overcome the short shortcoming of general turbine transducer impeller mission life, realized the flowmeter work long-life, high precision.
Turbine transducer principal character of the present invention is to make the block bearing of rotary blade of permanent magnet, and this Permanent-magnet bearing makes impeller be in stable magnetic suspension state.It is to realize like this that this Permanent-magnet bearing body rotary blade suspends, several annular permanent magnets are housed in the rotating shaft of rotary blade, the annular permanent magnet of similar number is housed in corresponding bearing seat, the inside surface of this annular permanent magnet is a utmost point of magnetic, outside surface is another utmost point of magnetic, their thickness is identical, annular distance is different big, annular permanent magnet makes the same magnetic polarity of the inside surface of annular permanent magnet on a magnetic polarity of last annular permanent magnet external surface and the corresponding axis bearing relative when arranging, adjacent two annular permanent magnets are by the different layout of magnetic polarity, and this layout guarantees no matter rotary blade is in settling position when static or rotation.The several to annular permanent magnet of similar number are housed on the end face of rotary blade both ends of the surface and corresponding axis bearing, every pair of annular permanent magnet radial dimension is identical, an end face of this annular permanent magnet is a utmost point of magnetic, another utmost point that another end face is a magnetic makes it relative with magnetic polarity during layout.And the little steel ball of auxiliary positioning of axle is housed at the rotating shaft end, it is moving or have atomic little string moving to guarantee axially not have when rotary blade rotates string, utilizes the magnetic resistance change rate principle, detects wheel speed by being positioned at the outer tach signal detection device of housing, and converts corresponding flow to.Description of drawings: accompanying drawing is the magnetic floating-type turbo-conveyer for measuring flow structural drawing.
[1] rotary blade, [2] rotating shaft, annular permanent magnet in the annular permanent magnet on [3] axle, [4] bearing seat, [5] bearing seat, [6] axial thrust annular permanent magnet, [7] impeller end face axial thrust annular permanent magnet, [8] the little steel ball of Zhou auxiliary positioning, [9] housing, [10] tach signal detection device.
In conjunction with the accompanying drawings the present invention is further described: rotary blade [1] rotates under the effect of fluid, be contained in that rotating shaft [2] is gone up and annular permanent magnet [3] and [4] of corresponding axis bearing interior [5], because it is relative with magnetic pole, produce the magnetic force that rotating shaft is suspended in the center, annular permanent magnet [6] and [7] generation of being contained on impeller [1] and corresponding axis bearing [5] end face make the magnetic force of impeller suspended between diaxon bearing end face, little steel ball [8] plays the usefulness of axial auxiliary positioning, guarantee that bigger axial displacement does not take place for annular permanent magnet [3] and [4] in rotating shaft [2] and the bearing pack, housing [9] is formed fluid course and is guaranteed the assembling of each parts, tach signal detection device [10] detects and the corresponding wheel speed of fluid flow, is demonstrated the flow of fluid by the secondary table.
Owing to there is not friction during the rotary blade high-speed rotation, there are not wearing and tearing, no frictional resistance moment makes wheel rotation more flexible, has greatly prolonged the impeller mission life, has improved the precision of flow metering.
Embodiment:
The nominal diameter Dg of housing [9] is 50 millimeters, and material is 1Cr18Ni9Ti; Rotary blade [1] is used 2Cr
13Stainless steel is made, on 6 blades are arranged, rotating shaft [2] is made with 1Cr8Ni9Ti, annular permanent magnet [3], [4], [6], [7] are Nd-Fe-Bo permanent magnet material, the number of annular permanent magnet [3] and [4] is 4, and the number of annular permanent magnet [6] and [7] is 2, and little steel ball [8] is the stainless steel globule of diameter 3.1.Tach signal detection device [10] is the magneto-electric induction coil.
Claims (1)
1, a kind of flow measurement turbine transducer, mainly by housing [9], tach signal detection device [10], rotary blade [1], rotating shaft [2], bearing seat [5] is formed, it is characterized in that being equipped with in the rotating shaft [2] annular permanent magnet [3], annular permanent magnet [4] is housed in the bearing seat [5], the inside surface of this annular permanent magnet is a utmost point of magnetic, outside surface is another utmost point of magnetic pole, their thickness is identical, the annular distance difference, the logarithm that place annular permanent magnet [3] and [4] equates, and greater than 1, press with the magnetic polarity positioned opposite for every pair, adjacent two annular permanent magnets are equipped with axle thrust annular permanent magnet [6] impeller end face axial thrust annular permanent magnet [7] are housed by the different layout of magnetic polarity on bearing seat [5] end face, an end face of this annular permanent magnet is a utmost point of magnetic, another end face is another utmost point of magnetic, these two kinds of annular permanent magnets are pressed with the magnetic pole positioned opposite, and the logarithm of layout equates that every pair of its radial dimension of annular permanent magnet is identical.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 90103836 CN1056931A (en) | 1990-05-31 | 1990-05-31 | A kind of magnetic floating-type turbo-conveyer for measuring flow |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 90103836 CN1056931A (en) | 1990-05-31 | 1990-05-31 | A kind of magnetic floating-type turbo-conveyer for measuring flow |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1056931A true CN1056931A (en) | 1991-12-11 |
Family
ID=4878267
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 90103836 Pending CN1056931A (en) | 1990-05-31 | 1990-05-31 | A kind of magnetic floating-type turbo-conveyer for measuring flow |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1056931A (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101021149B (en) * | 2007-02-14 | 2011-06-08 | 大庆油田有限责任公司 | Well logging magnetic suspension turbine flowmeter |
| CN101344036B (en) * | 2007-07-14 | 2013-04-24 | 阿特拉斯·科普柯能源有限公司 | Turbo engine |
| CN104406640A (en) * | 2014-12-11 | 2015-03-11 | 郑州大学 | Air micro-flowmeter based on diamagnetic levitation mechanism |
| 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 |
| CN106338454A (en) * | 2016-10-27 | 2017-01-18 | 上海大学 | Magnetic-suspending rotary drumfluid damp measuring apparatus |
| CN106595942A (en) * | 2016-07-25 | 2017-04-26 | 北京卫星环境工程研究所 | Dynamic measuring device of micro force |
| CN114838790A (en) * | 2022-04-29 | 2022-08-02 | 安徽省锐凌计量器制造有限公司 | Turbine flowmeter flow compensation parameter testing system |
-
1990
- 1990-05-31 CN CN 90103836 patent/CN1056931A/en active Pending
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101021149B (en) * | 2007-02-14 | 2011-06-08 | 大庆油田有限责任公司 | Well logging magnetic suspension turbine flowmeter |
| CN101344036B (en) * | 2007-07-14 | 2013-04-24 | 阿特拉斯·科普柯能源有限公司 | Turbo engine |
| CN104406640A (en) * | 2014-12-11 | 2015-03-11 | 郑州大学 | Air micro-flowmeter based on diamagnetic levitation mechanism |
| CN104406640B (en) * | 2014-12-11 | 2017-08-04 | 郑州大学 | A kind of gas micro-flowmeter based on diamagnetic Suspension Mechanism |
| 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 |
| CN106595942A (en) * | 2016-07-25 | 2017-04-26 | 北京卫星环境工程研究所 | Dynamic measuring device of micro force |
| CN106595942B (en) * | 2016-07-25 | 2019-06-07 | 北京卫星环境工程研究所 | The dynamic measurement device of small power |
| CN106338454A (en) * | 2016-10-27 | 2017-01-18 | 上海大学 | Magnetic-suspending rotary drumfluid damp measuring apparatus |
| CN106338454B (en) * | 2016-10-27 | 2023-10-20 | 上海大学 | Magnetic suspension rotary drum fluid damping measuring instrument |
| CN114838790A (en) * | 2022-04-29 | 2022-08-02 | 安徽省锐凌计量器制造有限公司 | Turbine flowmeter flow compensation parameter testing system |
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|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C01 | Deemed withdrawal of patent application (patent law 1993) | ||
| WD01 | Invention patent application deemed withdrawn after publication |