CN105158497A - Magnetic suspension rotating speed sensor - Google Patents
Magnetic suspension rotating speed sensor Download PDFInfo
- Publication number
- CN105158497A CN105158497A CN201510574126.4A CN201510574126A CN105158497A CN 105158497 A CN105158497 A CN 105158497A CN 201510574126 A CN201510574126 A CN 201510574126A CN 105158497 A CN105158497 A CN 105158497A
- Authority
- CN
- China
- Prior art keywords
- magnetic
- magnetic ring
- ring
- speed probe
- inductive
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Abstract
The invention discloses a magnetic suspension rotating speed sensor, which comprises an axial bearing magnetic suspension bearing, a sensor chamber, a rotating speed sensor and an induced magnetic steel bracket; at least one group of a first induced magnetic steel and a second induced magnetic steel is fixed on the induced magnetic steel bracket; the axial bearing magnetic suspension bearing also comprises a first inner magnet ring, a second inner magnet ring that are set on the outer wall of the shaft core side by side; a spindle sleeve is sleeved outside the shaft core; the spindle sleeve comprises a pedestal; one end of the shaft core has a tip on the shaft core center line; the tip is against the center of the pedestal; the spindle sleeve has a first outer magnet ring and a second outer magnet ring side by side corresponding to the first inner magnet ring and the second inner magnet ring respectively. The substantial effect is that the measurement can be done in a super low or a super high flow velocity; the measurement precision is high; the measurement won't be influenced by silt or sewage; and the maintenance is convenient.
Description
Technical field
The present invention relates to open liquid, air flow measuring apparatus device technical field, specifically, is a kind of magnetic levitation speed probe.
Background technology
In open fluid measurement (as rivers hydrology fluid-velocity survey), existing similar fluid-velocity survey instrument is mechanical sensor, by rotating plasma, and ball bearing mechanism, turbine throw-over gear, and contact-making switch composition.In use, sensor is placed in liquid or the gas of certain flow rate, the liquid of flowing or gas drive rotating plasma to rotate, and rotating plasma drives turbine throw-over gear to touch contact-making switch and sends signal.
But there are the following problems for traditional mechanical sensor: mechanical drive friction force is large, can not measure in low flow velocity environment; Must rolling bearing be used in gear train, measure inaccurate in high pollution high sediment concentration environment or occur that bearing is stuck and can not send signal; Owing to adopting touch switch, in the high speed signal exceeding 100 times per second transmits, easily produce mechanical fault or leak and signal, Gu can not measure at a high speed; In addition, mechanical sensor structures is complicated, fragile, and must dismantle completely after each use and maintain, otherwise sensor will damage and can not use, daily servicing is quite inconvenient.
Summary of the invention
For the deficiencies in the prior art, the object of this invention is to provide a kind of magnetic levitation speed probe, this sensor can be measured in extremely low and high flow rate environments, and measuring accuracy is high, does not fear silt and sewage, easy to maintenance.
For achieving the above object, the technical solution used in the present invention is as follows:
A kind of magnetic levitation speed probe, its key is: comprise axially loaded magnetic suspension bearing, axle core one end of this axially loaded magnetic suspension bearing is connected with transducer room, speed probe is provided with in transducer room, described axially loaded magnetic suspension bearing outer wall is provided with inductive magnetic steel support, this inductive magnetic steel support is fixed with at least one group of the first inductive magnetic steel and the second inductive magnetic steel, described first inductive magnetic steel and the second inductive magnetic steel are separately positioned on the both sides of outer end, described axle center, described axially loaded magnetic suspension bearing also comprises the first internal magnetic ring be disposed side by side on described axle outer core, second internal magnetic ring, axle sleeve is arranged with in the outside of described axle core, described axle sleeve includes base, the other end of described axle core is provided with that to be positioned on this axle core center line top, describedly toply lean at the center of described base, described axle sleeve is provided with side by side and described first internal magnetic ring, the first outer magnetic ring that second internal magnetic ring is corresponding respectively, second outer magnetic ring.
In this programme, the homonymy of the first internal magnetic ring, the second internal magnetic ring is at the same level and there is spacing, form two pole orientation is identical and the magnetic line of force is inside and outside radial magnet ring, when internal magnetic ring overlaps with the magnetic field center of outer magnetic ring, internal magnetic ring should revolve and be parked in outer magnetic ring in theory, but this coincide point just exists in theory, can not find this point in practical application, when therefore axle core being adjusted to suitable distance, the internal magnetic ring on axle core can revolve in the outer magnetic ring be parked on axle sleeve.Therefore, under the effect of the attachment devices such as screw propeller, axially loaded magnetic suspension bearing cuts the magnetic field rotating formed between the first inductive magnetic steel and the second inductive magnetic steel, the cutting magnetic field bringing one or more groups north and south to replace thus, excites flow sensor to send switching signal.
In this programme, whole Mechanical Contact face only has a top point, all the other positions are contactless, do not exist because contacting the friction force produced between internal magnetic ring with outer magnetic ring, therefore compared to existing flow sensor, its sensitivity significantly improves, and overcome the defect that mechanical sensor needs lubrication, the cleanliness of internal environment require to be starkly lower than ball bearing, without the need to lubricating and cleaning, therefore can measure in extremely low and high flow rate environments, measuring accuracy is high, do not fear silt and sewage, use yet Maintenance free for a long time, obviously reduce maintenance cost.
As the preferred technical scheme of one, described axle sleeve leans the regulating part that described top one end is provided with axle core axial location described in adjustable, and this regulating part can be that axle rotates around the center line of described axle core, the described top center leaned at this regulating part.
By the axial location of regulating part regulating shaft core, and then regulate the distance between internal magnetic ring and outer magnetic ring magnetic field center, the internal magnetic ring on axle core can revolve in the outer magnetic ring be parked on axle sleeve.Overcome the defect that mechanical sensor needs lubrication, the cleanliness of internal environment require to be starkly lower than ball bearing, without the need to lubricating and cleaning.
As the preferred technical scheme of one, described regulating part is provided with and the described top dead head matched.
As the preferred technical scheme of one, the outside of described regulating part is provided with socket.
As the preferred technical scheme of one, the homonymy of described first internal magnetic ring, the second internal magnetic ring, the first outer magnetic ring and the second outer magnetic ring is S level or N level.
As the preferred technical scheme of one, between described first internal magnetic ring, the second internal magnetic ring, be provided with the first soft iron ring, between described first outer magnetic ring, the second outer magnetic ring, be provided with the second soft iron ring.
As the preferred technical scheme of one, described top center is embedded with ball that is free to rotate and that lean at described base center.On top, be embedded ball, the friction force making to lean between ball on base and axle sleeve is minimum, close to zero.
As the preferred technical scheme of one, for magnetic pole alternative expression arranges between described first inductive magnetic steel and the second inductive magnetic steel.
Remarkable result of the present invention is: whole Mechanical Contact face only has a top point, all the other positions are contactless, do not exist because contacting the friction force produced between internal magnetic ring with outer magnetic ring, ball is embedded on top, the friction force leaned between ball on base and axle sleeve is minimum, close to zero, compared to existing flow sensor, its sensitivity significantly improves, and overcome the defect that mechanical sensor needs lubrication, the cleanliness of internal environment require to be starkly lower than ball bearing, without the need to lubricating and cleaning, therefore can measure in extremely low and high flow rate environments, measuring accuracy is high, do not fear silt and sewage, long-time use also Maintenance free, obvious reduction maintenance cost.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention;
Fig. 2 is the structural representation of described axially loaded magnetic suspension bearing;
Fig. 3 is the A-A schematic cross-section in Fig. 2;
Fig. 4 is the structural representation of regulating part in Fig. 2.
Embodiment
Below in conjunction with accompanying drawing, the specific embodiment of the present invention and principle of work are described in further detail.
As shown in figures 1-4, a kind of magnetic levitation speed probe, comprise axially loaded magnetic suspension bearing 1, one end of the axle core 11 of this axially loaded magnetic suspension bearing 1 is connected with transducer room 2, speed probe 3 is provided with in transducer room 2, described axially loaded magnetic suspension bearing 1 outer wall is provided with inductive magnetic steel support 4, this inductive magnetic steel support 4 is fixed with at least one group first inductive magnetic steel 5 and the second inductive magnetic steel 6, described first inductive magnetic steel 5 and the second inductive magnetic steel 6 are separately positioned on the both sides of outer end, described axle center 11, described axially loaded magnetic suspension bearing 1 also comprises the first internal magnetic ring 12 be disposed side by side on described axle core 11 outer wall, second internal magnetic ring 17, axle sleeve 13 is arranged with in the outside of described axle core 11, described axle sleeve 13 includes base 131, the other end of described axle core 11 is provided be positioned on this axle core 11 center line top 111, described top 111 lean at the center of described base 131, described axle sleeve 13 is provided with side by side and described first internal magnetic ring 12, the first outer magnetic ring 14 that second internal magnetic ring 17 is corresponding respectively, second outer magnetic ring 15.
As shown in Figure 2, described axle sleeve 13 leans the regulating part 16 that described one end of top 111 is provided with axle core 11 axial location described in adjustable, and this regulating part 16 can be that axle rotates around the center line of described axle core 11, described top 111 lean at the center of this regulating part 16, described regulating part 6 is provided with and described top 111 dead heads matched 162, and the outside of described regulating part 16 is provided with socket 161.
As preferably, between described first internal magnetic ring 12 and the second internal magnetic ring 17, be provided with the first soft iron ring 18, between described first outer magnetic ring 14 and the second outer magnetic ring 15, be provided with the second soft iron ring 19.
As preferably, the described center of top 111 is embedded with ball 110 that is free to rotate and that lean at described base 31 center.
As preferably, the homonymy of described first internal magnetic ring 12, second internal magnetic ring 17, first outer magnetic ring 14 and the second outer magnetic ring 15 is S level or N level.
As preferably, for magnetic pole alternative expression arranges between described first inductive magnetic steel 5 and the second inductive magnetic steel 6.
In this example, first internal magnetic ring 12, the homonymy of the second internal magnetic ring 17 is at the same level and there is spacing, form two pole orientation is identical and the magnetic line of force is inside and outside radial magnet ring, when internal magnetic ring overlaps with the magnetic field center of outer magnetic ring, internal magnetic ring should revolve and be parked in outer magnetic ring in theory, but this coincide point just exists in theory, this point is can not find in practical application, therefore by the axial location of regulating part regulating shaft core 11, and then the distance between adjustment internal magnetic ring and outer magnetic ring magnetic field center, when being adjusted to suitable distance, internal magnetic ring on axle core 11 revolves in the outer magnetic ring be parked on axle sleeve.Therefore, under the effect of the attachment devices such as screw propeller, axially loaded magnetic suspension bearing 1 cuts the magnetic field rotating formed between the first inductive magnetic steel 5 and the second inductive magnetic steel 6, and the cutting magnetic field bringing one or more groups north and south to replace thus, excites Hall element 4 to send switching signal.
Claims (8)
1. a magnetic levitation speed probe, it is characterized in that: comprise axially loaded magnetic suspension bearing (1), one end of the axle core (11) of this axially loaded magnetic suspension bearing (1) is connected with transducer room (2), speed probe (3) is provided with in transducer room (2), described axially loaded magnetic suspension bearing (1) outer wall is provided with inductive magnetic steel support (4), this inductive magnetic steel support (4) is fixed with at least one group of the first inductive magnetic steel (5) and the second inductive magnetic steel (6), described first inductive magnetic steel (5) and the second inductive magnetic steel (6) are separately positioned on the both sides of described axle center (11) outer end, described axially loaded magnetic suspension bearing (1) also comprises the first internal magnetic ring (12) on the outer wall being disposed side by side on described axle core (11), second internal magnetic ring (17), axle sleeve (13) is arranged with in the outside of described axle core (11), described axle sleeve (13) includes base (131), the other end of described axle core (11) is provided with top (111) that are positioned on this axle core (11) center line, described top (111) lean the center in described base (131), described axle sleeve (13) is provided with side by side and described first internal magnetic ring (12), the first outer magnetic ring (14) that second internal magnetic ring (17) is corresponding respectively, second outer magnetic ring (15).
2. magnetic levitation speed probe as claimed in claim 1, it is characterized in that: one end that described axle sleeve (13) leans described top (111) is provided with the regulating part (16) of axle core (11) axial location described in adjustable, and this regulating part (16) can be that axle rotates around the center line of described axle core (11), described top (111) lean the center in this regulating part (16).
3. magnetic levitation speed probe as claimed in claim 2, is characterized in that: described regulating part (6) is provided with the dead head (162) matched with described top (111).
4. magnetic levitation speed probe as claimed in claim 2, is characterized in that: the outside of described regulating part (16) is provided with socket (161).
5. magnetic levitation speed probe as claimed in claim 1, is characterized in that: the homonymy of described first internal magnetic ring (12), the second internal magnetic ring (17), the first outer magnetic ring (14) and the second outer magnetic ring (15) is S level or N level.
6. the magnetic levitation speed probe as described in claim 1 or 5, it is characterized in that: between described first internal magnetic ring (12) and the second internal magnetic ring (17), be provided with the first soft iron ring (18), between described first outer magnetic ring (14) and the second outer magnetic ring (15), be provided with the second soft iron ring (19).
7. magnetic levitation speed probe as claimed in claim 1, is characterized in that: the center of described top (111) is embedded with ball (110) that is free to rotate and that lean at described base (31) center.
8. magnetic levitation speed probe as claimed in claim 1, is characterized in that: for magnetic pole alternative expression arranges between described first inductive magnetic steel (5) and the second inductive magnetic steel (6).
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 true CN105158497A (en) | 2015-12-16 |
| CN105158497B CN105158497B (en) | 2018-02-13 |
Family
ID=54799418
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 |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105158497B (en) |
Cited By (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 |
| CN109259501A (en) * | 2018-11-27 | 2019-01-25 | 浙江和也健康科技有限公司 | A kind of compound 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 (9)
| 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 |
| JPH08326751A (en) * | 1995-06-05 | 1996-12-10 | Koyo Seiko Co Ltd | Magnetic bearing |
| 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 |
-
2015
- 2015-09-10 CN CN201510574126.4A patent/CN105158497B/en active Active
Patent Citations (9)
| 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 |
| JPH08326751A (en) * | 1995-06-05 | 1996-12-10 | Koyo Seiko Co Ltd | Magnetic bearing |
| 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 |
Cited By (4)
| 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 |
| CN109259501A (en) * | 2018-11-27 | 2019-01-25 | 浙江和也健康科技有限公司 | A kind of compound 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 |
| CN109259501B (en) * | 2018-11-27 | 2023-10-31 | 和也健康科技有限公司 | Composite gyromagnetic massage mattress |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105158497B (en) | 2018-02-13 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103968981A (en) | Testing device for high-speed miniature bearing dynamic friction torque | |
| CN204944838U (en) | Bearing dirigibility testing agency | |
| CN204757845U (en) | Round detection device that beats | |
| CN103398665A (en) | Pipeline robot for internal diameter measurement | |
| CN205860972U (en) | A kind of aluminum pipe axiality detection device | |
| CN105158497A (en) | Magnetic suspension rotating speed sensor | |
| CN204115638U (en) | Crankshaft journal following measurement device | |
| CN103512466A (en) | Serialized method for measuring groove diameters of inner and outer rings of noncircular-channel bearing | |
| CN202188801U (en) | Female thread micrometer | |
| CN202470972U (en) | Axial clearance detector for double-row bearing | |
| CN105510017B (en) | Taper hole type bearing sealed ring pressure-bearing test device | |
| CN204064190U (en) | A kind of device measuring matched bearings end-play | |
| CN203550915U (en) | Internal diameter measuring robot for pipeline | |
| CN206609830U (en) | One kind is used for pipeline corrosion ultrasonic scanning device | |
| CN202757604U (en) | Ball bearing contact angle measuring apparatus | |
| CN205808331U (en) | A kind of inner bore of part coaxality measuring mechanism | |
| CN205539042U (en) | Magnetic suspension propeller type current meter | |
| CN203744894U (en) | Detector for measuring inner and outer diameters of large-diameter bearing | |
| CN203587021U (en) | Roundness error detector | |
| CN102853802A (en) | Mechanical device for measuring rotation angle of rotating ring | |
| CN202947630U (en) | Inspection device of internal and external diameter | |
| CN203376100U (en) | Magnetically-mounted dual point switch traction turnout pulling force detection apparatus | |
| CN105090244B (en) | Axially loaded magnetic suspension bearing | |
| CN205719116U (en) | Permanent magnetism magnetic suspension turbine sensor | |
| CN203479238U (en) | Perpendicularity testing tool for rocker arm threaded hole |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |