CN105158497B - Magnetic suspension speed probe - Google Patents
Magnetic suspension speed probe Download PDFInfo
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- CN105158497B CN105158497B CN201510574126.4A CN201510574126A CN105158497B CN 105158497 B CN105158497 B CN 105158497B CN 201510574126 A CN201510574126 A CN 201510574126A CN 105158497 B CN105158497 B CN 105158497B
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- magnetic
- ring
- magnetic ring
- shaft core
- speed probe
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Abstract
The invention discloses a kind of magnetic suspension speed probe, including axially loaded magnetic suspension bearing, transducer room, speed probe, inductive magnetic steel support, at least one set of first inductive magnetic steel and the second inductive magnetic steel are fixed with the inductive magnetic steel support；The axially loaded magnetic suspension bearing also includes the first internal magnetic ring, the second internal magnetic ring being disposed side by side on the shaft core outer wall, axle sleeve is provided with the outer sheath of the shaft core, the axle sleeve includes base, one end of the shaft core is provided with top on the shaft core center line, the top center for acting against the base, it is provided with side by side on the axle sleeve and first internal magnetic ring, the second internal magnetic ring corresponding first outer magnetic ring, the second outer magnetic ring respectively.Its remarkable result is：It can be measured in extremely low and high flow rate environments, measurement accuracy is high, does not fear silt and sewage, easy to maintenance.
Description
Technical field
The present invention relates to open liquid, air flow measuring apparatus device technical field, is a kind of magnetic suspension specifically
Speed probe.
Background technology
In open fluid measurement (such as rivers hydrology flow velocity measures), existing similar Flow speed measurer device is machinery
Formula sensor, by rotating plasma, ball bearing mechanism, turbine switching mechanism, and contact-making switch composition.When in use, sensor is put
In the liquid or gas of certain flow rate, the liquid or gas of flowing drive rotating plasma rotation, and rotating plasma drives turbine switching mechanism to touch
Dynamic contact-making switch sends signal.
However, there are the following problems for traditional mechanical sensor：Machine driving frictional force is big, in low flow velocity environment not
Can measurement；Rolling bearing must be used in transmission mechanism, inaccuracy is measured in high pollution high sediment concentration environment or bearing occurs
It is stuck to send signal；Due to using touch switch, machine is easily produced in the high speed signal more than 100 times per second transmits
Tool failure or leakage are signaled, Gu it can not measure at a high speed；In addition, mechanical sensor structures are complicated, and it is fragile, it is necessary after each use
Dismounting is maintained completely, and otherwise sensor, which will damage, to use, and regular maintenance is quite inconvenient.
The content of the invention
In view of the shortcomings of the prior art, it is an object of the invention to provide a kind of magnetic suspension speed probe, the sensor can
To be measured in extremely low and high flow rate environments, measurement accuracy is high, does not fear silt and sewage, easy to maintenance.
To reach above-mentioned purpose, the technical solution adopted by the present invention is as follows：
A kind of magnetic suspension speed probe, its key are：Including axially loaded magnetic suspension bearing, the axially loaded magnetcisuspension
Shaft core one end that floating axle is held is connected with transducer room, and speed probe is provided with transducer room, in the axially loaded magnetic
Inductive magnetic steel support is provided with suspension bearing outer wall, be fixed with the inductive magnetic steel support at least one set of first inductive magnetic steel with
Second inductive magnetic steel, first inductive magnetic steel and the second inductive magnetic steel are separately positioned on the both sides of the shaft core outer end, described
Axially loaded magnetic suspension bearing also includes the first internal magnetic ring, the second internal magnetic ring being disposed side by side on the shaft core outer wall, in institute
The outer sheath for stating shaft core is provided with axle sleeve, and the axle sleeve includes base, and the other end of the shaft core, which is provided with, is located at the shaft core center
It is top on line, the top center for acting against the base, it is provided with side by side on the axle sleeve and first internal magnetic ring, the
First outer magnetic ring, the second outer magnetic ring corresponding to two internal magnetic rings difference.
In this programme, for peer and there is spacing in the first internal magnetic ring, the homonymy of the second internal magnetic ring, form two pole orientations
The identical and magnetic line of force is in inside and outside radial magnet ring, when internal magnetic ring overlaps with the magnetic field center of outer magnetic ring, interior magnetic in theory
Ring, which should revolve, to be parked in outer magnetic ring, but this coincidence point simply exists in theory, and this point is can not find in practical application, therefore will
When shaft core is adjusted to suitable distance, the internal magnetic ring in shaft core can be revolved in the outer magnetic ring being parked on axle sleeve.Therefore, it is attached in propeller etc.
In the presence of feeder apparatus, axially loaded magnetic suspension bearing cuts the magnetic field formed between the first inductive magnetic steel and the second inductive magnetic steel
Rotation, thus brings the alternate cutting magnetic field in one or more groups of north and south, excites flow sensor to send switching signal.
In this programme, whole Mechanical Contact face only has a top point, and remaining position is contactless, internal magnetic ring and outer magnetic ring it
Between be not present significantly improved because of frictional force caused by contact, therefore compared to existing flow sensor, its sensitivity, and gram
The defects of mechanical sensor needs lubrication is taken, the cleannes requirement of internal environment is significantly lower than ball bearing, without lubrication
And cleaning, therefore can be measured in extremely low and high flow rate environments, measurement accuracy is high, does not fear silt and sewage, long
Time, use was without maintenance, hence it is evident that reduces maintenance cost.
As a kind of perferred technical scheme, the axle sleeve leans described top one end and is provided with the adjustable shaft core axle
To the regulating part of position, and the regulating part can be axle rotation around the center line of the shaft core, described top to act against the regulating part
Center.
The axial location of shaft core is adjusted by regulating part, so adjust between internal magnetic ring and outer magnetic ring magnetic field center away from
From the internal magnetic ring in shaft core can be revolved in the outer magnetic ring being parked on axle sleeve.The defects of mechanical sensor needs lubrication is overcome, it is interior
The cleannes requirement of portion's environment is significantly lower than ball bearing, without lubricating and cleaning.
As a kind of perferred technical scheme, the regulating part is provided with and the top dead head to match.
As a kind of perferred technical scheme, the outside of the regulating part is provided with socket.
As a kind of perferred technical scheme, first internal magnetic ring, the second internal magnetic ring, outside the first outer magnetic ring and second
The homonymy of magnet ring is S levels or N levels.
As a kind of perferred technical scheme, the first soft iron ring, institute are provided between first internal magnetic ring, the second internal magnetic ring
State and the second soft iron ring is provided between the first outer magnetic ring, the second outer magnetic ring.
As a kind of perferred technical scheme, the top center is embedded with free to rotate and acts against the base
The ball at center.By being embedded ball on top so that the frictional force acted against between the ball on base and axle sleeve is minimum, connects
It is bordering on zero.
As a kind of perferred technical scheme, it is magnetic pole alternative expression between first inductive magnetic steel and the second inductive magnetic steel
Arrangement.
The present invention remarkable result be：Whole Mechanical Contact face only has a top point, and remaining position is contactless, internal magnetic ring
Be not present between outer magnetic ring because of frictional force caused by contact, it is top on be embedded ball, act against ball and axle sleeve on base
Between frictional force it is minimum, close to zero, compared to existing flow sensor, its sensitivity significantly improves, and overcomes
Mechanical sensor needs the defects of lubrication, and the cleannes requirement of internal environment is significantly lower than ball bearing, without lubrication and clearly
It is clean, therefore can be measured in extremely low and high flow rate environments, measurement accuracy is high, does not fear silt and sewage, for a long time
Using without maintenance, hence it is evident that reduce maintenance cost.
Brief description of the drawings
Fig. 1 is the structural representation of the present invention；
Fig. 2 is the structural representation of the axially loaded magnetic suspension bearing；
Fig. 3 is the Section A-A schematic diagram in Fig. 2；
Fig. 4 is the structural representation of regulating part in Fig. 2.
Embodiment
The embodiment and operation principle of the present invention are described in further detail below in conjunction with the accompanying drawings.
As shown in figures 1-4, a kind of magnetic suspension speed probe, including axially loaded magnetic suspension bearing 1, the axially loaded
One end of the shaft core 11 of magnetic suspension bearing 1 is connected with transducer room 2, and speed probe 3 is provided with transducer room 2, in institute
State and be provided with inductive magnetic steel support 4 on the outer wall of axially loaded magnetic suspension bearing 1, at least one is fixed with the inductive magnetic steel support 4
The first inductive magnetic steel 5 of group and the second inductive magnetic steel 6, the inductive magnetic steel 6 of the first inductive magnetic steel 5 and second are separately positioned on described
The both sides of the outer end of shaft core 11, the axially loaded magnetic suspension bearing 1 also include the be disposed side by side on the outer wall of shaft core 11
One internal magnetic ring 12, the second internal magnetic ring 17, axle sleeve 13 is provided with the outer sheath of the shaft core 11, the axle sleeve 13 includes base
131, the other end of the shaft core 11 be provided with the center line of shaft core 11 top 111, described top 111 act against it is described
The center of base 131, it is provided with side by side on the axle sleeve 13 and first internal magnetic ring 12, the second internal magnetic ring 17 respectively corresponding the
One outer magnetic ring 14, the second outer magnetic ring 15.
As shown in Fig. 2 the axle sleeve 13, which leans described top 111 one end, is provided with the adjustable axial location of shaft core 11
Regulating part 16, and the regulating part 16 can around the shaft core 11 center line be axle rotation, described top 111 act against the regulation
The center of part 16, the regulating part 16 be provided with described top 111 dead heads 162 to match, the regulating part 16 it is outer
Side is provided with socket 161.
Preferably, the first soft iron ring 18 is provided between the internal magnetic ring 17 of the first internal magnetic ring 12 and second, described
The second soft iron ring 19 is provided between first outer magnetic ring 14 and the second outer magnetic ring 15.
Preferably, top 111 center is embedded with rolling that is free to rotate and acting against the center of base 131
Pearl 110.
Preferably, first internal magnetic ring 12, the second internal magnetic ring 17, the first outer magnetic ring 14 and the second outer magnetic ring 15
Homonymy is S levels or N levels.
Preferably, arranged between the inductive magnetic steel 6 of the first inductive magnetic steel 5 and second for magnetic pole alternative expression.
In this example, for peer and there is spacing in the first internal magnetic ring 12, the homonymy of the second internal magnetic ring 17, form two magnetic poles
Direction is identical and the magnetic line of force is in inside and outside radial magnet ring, when internal magnetic ring overlaps with the magnetic field center of outer magnetic ring, in theory
Internal magnetic ring, which should revolve, to be parked in outer magnetic ring, but this coincidence point simply exists in theory, and this point is can not find in practical application, because
This adjusts the axial location of shaft core 11 by regulating part, and then adjusts the distance between internal magnetic ring and outer magnetic ring magnetic field center,
When regulation is to suitable distance, the internal magnetic ring rotation in shaft core 11 is parked in the outer magnetic ring on axle sleeve.Therefore, in the additional dress such as propeller
In the presence of putting, axially loaded magnetic suspension bearing 1 cuts the magnetic field formed between the first inductive magnetic steel 5 and the second inductive magnetic steel 6
Rotation, thus brings the alternate cutting magnetic field in one or more groups of north and south, excites Hall sensor 4 to send switching signal.
Claims (8)
- A kind of 1. magnetic suspension speed probe, it is characterised in that：Including axially loaded magnetic suspension bearing (1), the axially loaded magnetic One end of the shaft core (11) of suspension bearing (1) is connected with transducer room (2), and speed probe is provided with transducer room (2) (3) inductive magnetic steel support (4), is provided with axially loaded magnetic suspension bearing (1) outer wall, the inductive magnetic steel support (4) On be fixed with least one set of first inductive magnetic steel (5) and the second inductive magnetic steel (6), first inductive magnetic steel (5) and the second sense Magnet steel (6) is answered to be separately positioned on the both sides of the shaft core (11) outer end, the axially loaded magnetic suspension bearing (1) is also included side by side The first internal magnetic ring (12), the second internal magnetic ring (17) being arranged on the outer wall of the shaft core (11), in the outer of the shaft core (11) Side is arranged with axle sleeve (13), and the axle sleeve (13) includes base (131), and the other end of the shaft core (11), which is provided with, is located at the axle Top (111) on core (11) center line, top (111) act against the center of the base (131), the axle sleeve (13) On be provided with side by side with first internal magnetic ring (12), the second internal magnetic ring (17) respectively corresponding first outer magnetic ring (14), outside second Magnet ring (15).
- 2. magnetic suspension speed probe as claimed in claim 1, it is characterised in that：The axle sleeve (13) leans described top (111) one end is provided with the regulating part (16) that can adjust shaft core (11) axial location, and the regulating part (16) can be around described The center line of shaft core (11) rotates for axle, and top (111) act against the center of the regulating part (16).
- 3. magnetic suspension speed probe as claimed in claim 2, it is characterised in that：The regulating part (16) be provided with it is described The dead head (162) that top (111) match.
- 4. magnetic suspension speed probe as claimed in claim 2, it is characterised in that：The outside of the regulating part (16), which is provided with, inserts Mouth (161).
- 5. magnetic suspension speed probe as claimed in claim 1, it is characterised in that：First internal magnetic ring (12), in second The homonymy of magnet ring (17), the first outer magnetic ring (14) and the second outer magnetic ring (15) is S levels or N levels.
- 6. the magnetic suspension speed probe as described in claim 1 or 5, it is characterised in that：First internal magnetic ring (12) with The first soft iron ring (18) is provided between second internal magnetic ring (17), between first outer magnetic ring (14) and the second outer magnetic ring (15) Provided with the second soft iron ring (19).
- 7. magnetic suspension speed probe as claimed in claim 1, it is characterised in that：The center of top (111) is embedded with Ball (110) that is free to rotate and acting against the base (131) center.
- 8. magnetic suspension speed probe as claimed in claim 1, it is characterised in that：First inductive magnetic steel (5) and second Arranged between inductive magnetic steel (6) for magnetic pole alternative expression.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510574126.4A CN105158497B (en) | 2015-09-10 | 2015-09-10 | Magnetic suspension speed probe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510574126.4A CN105158497B (en) | 2015-09-10 | 2015-09-10 | Magnetic suspension speed probe |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105158497A CN105158497A (en) | 2015-12-16 |
| CN105158497B true CN105158497B (en) | 2018-02-13 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510574126.4A Active CN105158497B (en) | 2015-09-10 | 2015-09-10 | Magnetic suspension speed probe |
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| Country | Link |
|---|---|
| CN (1) | CN105158497B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN109259501B (en) * | 2018-11-27 | 2023-10-31 | 和也健康科技有限公司 | Composite gyromagnetic massage mattress |
| CN109602209A (en) * | 2018-11-27 | 2019-04-12 | 浙江和也健康科技有限公司 | A kind of magnetic mattress |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1056931A (en) * | 1990-05-31 | 1991-12-11 | 清华大学 | A kind of magnetic floating-type turbo-conveyer for measuring flow |
| EP0819861A2 (en) * | 1996-07-18 | 1998-01-21 | Seiko Seiki Kabushiki Kaisha | Magnetic bearing devices |
| CN2275717Y (en) * | 1996-11-06 | 1998-03-04 | 北京三环电子技术公司 | Speed sensor |
| CN2410644Y (en) * | 2000-02-23 | 2000-12-13 | 罗渝 | Tachometer for hydrogenerator |
| CN2630802Y (en) * | 2003-07-04 | 2004-08-04 | 天津大学 | Magnetic suspension wide-range turbine flow sensor |
| CN2813979Y (en) * | 2005-08-10 | 2006-09-06 | 陈飞 | Magnetic dielectric bearing |
| CN101846131A (en) * | 2010-06-10 | 2010-09-29 | 北京前沿科学研究所 | Magnetic suspension bearing |
| CN103441648A (en) * | 2013-08-07 | 2013-12-11 | 中国科学院电工研究所 | High-temperature superconducting magnetic levitation motor |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3733160B2 (en) * | 1995-06-05 | 2006-01-11 | 光洋精工株式会社 | Magnetic bearing device |
-
2015
- 2015-09-10 CN CN201510574126.4A patent/CN105158497B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1056931A (en) * | 1990-05-31 | 1991-12-11 | 清华大学 | A kind of magnetic floating-type turbo-conveyer for measuring flow |
| EP0819861A2 (en) * | 1996-07-18 | 1998-01-21 | Seiko Seiki Kabushiki Kaisha | Magnetic bearing devices |
| CN2275717Y (en) * | 1996-11-06 | 1998-03-04 | 北京三环电子技术公司 | Speed sensor |
| CN2410644Y (en) * | 2000-02-23 | 2000-12-13 | 罗渝 | Tachometer for hydrogenerator |
| CN2630802Y (en) * | 2003-07-04 | 2004-08-04 | 天津大学 | Magnetic suspension wide-range turbine flow sensor |
| CN2813979Y (en) * | 2005-08-10 | 2006-09-06 | 陈飞 | Magnetic dielectric bearing |
| CN101846131A (en) * | 2010-06-10 | 2010-09-29 | 北京前沿科学研究所 | Magnetic suspension bearing |
| CN103441648A (en) * | 2013-08-07 | 2013-12-11 | 中国科学院电工研究所 | High-temperature superconducting magnetic levitation motor |
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| Publication number | Publication date |
|---|---|
| CN105158497A (en) | 2015-12-16 |
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