CN103023271A - Conical permanent magnet speed controller - Google Patents
Conical permanent magnet speed controller Download PDFInfo
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- CN103023271A CN103023271A CN2012104782390A CN201210478239A CN103023271A CN 103023271 A CN103023271 A CN 103023271A CN 2012104782390 A CN2012104782390 A CN 2012104782390A CN 201210478239 A CN201210478239 A CN 201210478239A CN 103023271 A CN103023271 A CN 103023271A
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Abstract
The invention discloses a speed controller using a magnetic device to transmit torsion. The speed controller respectively consists of a driving magnetic rotor, a driven rotor, a bearing and a bracket; the driving magnetic rotor and the driven rotor are respectively arranged on a driving shaft and a driven shaft; a driving magnetic rotor consisting of a conical shell made of soft iron and a permanent magnet is fixedly arranged on the inner surface of the conical shell; a conical driven rotor made of a soft magnetic material is fixedly arranged on the driven shaft; the conical driven rotor is located in a conical shell of the driving magnetic rotor, and is separated from the driving magnetic rotor through an air gas; permanent magnet groups are arranged on the driving magnetic rotor; each permanent magnet group consists of four permanent magnet blocks with the equal cross section and the same polarity direction; the direction of magnetic force lines of the four permanent magnet blocks is parallel to a radial direction; the permanent magnet groups are separated by using a soft material with the width which is equal to the width of the permanent magnet block; the two adjacent permanent magnet blocks are arranged in a reverse polarity manner; and the driven rotor is made of the soft iron.
Description
Technical field
The present invention relates to a kind of speed regulator that utilizes the magnetic device transmitting torque.
Background technology
In the industries such as large-scale mining, cement, paper pulp, petrochemical industry, metallurgy, electric power, because energy-conservation needs and easy to operate, a large amount of variable-frequency governors are applied in the middle of the production process.Frequency converter timing is divided into the low-voltage variable frequency speed governing of powerful middle high-pressure frequency control and middle low power, no matter two kinds of speed governing are to adopt which kind of frequency converter, because the technology of using is all used integrated circuit, adopt Control Technique of Microcomputer and electron electric power technology, thereby its shortcoming is: system complex, and maintainable poor, the equipment accommodative ability of environment is poor, be subject to the interference of surrounding environment, the interference of the environment of especially powering; Equipment in use is prone to unpredictable chance failure, has a strong impact on continuity, the stability of production; The useful life of next this kind equipment is relatively short, generally at 7-10; The workload of this kind equipment maintenance is larger in addition, and expense is higher; Simultaneously this kind equipment install and the environmental requirement used comparatively harsh, the conditions such as, constant temperature dustless such as requiring.
Summary of the invention
The invention provides a kind of frequency converter that uses at present, many disadvantages that reductor brings avoided, utilize the magnetic device transmitting torque, and convertible rotating speed realize soft connection soft start shaft coupling.
Permanent-magnet speed governor of the present invention is by the driving magnet rotor and the driven rotor that are arranged at respectively on driving shaft and the driven shaft, bearing, prop up and be configured to, wherein: driving shaft be fixedly installed the conical shell made by soft iron and be fixed in that set of permanent magnets on the conical shell inner surface consists of the driving magnet rotor, be fixedly installed the driven rotor of the taper that is consisted of by soft magnetic material at driven shaft, and the driven rotor of bullet is positioned at the conical shell that drives magnet rotor, and and drive between magnet rotor and be separated by with air gap, wherein: each set of permanent magnets that drives on the magnet rotor fixedly forms by four prismatic polar orientation permanent magnet blocks identical and its magnetic line of force direction and radial parallel are adjacent, each is organized the soft material that equals a permanent magnet blocks width with a width between set of permanent magnets and separates, and two adjacent set of permanent magnets polarity arrange on the contrary; Driven rotor is made with soft iron, on the outer surface of driven rotor vertically spacing be fixed with the copper bar that the cross section is rectangle, be separated by with soft iron between each copper bar, and the cross-sectional width of each copper bar equates with the soft iron cross-sectional width of being separated by; Be fixed with a T-shaped sliding sleeve in its cross section that can move vertically at driven shaft, the horizontal end of T shape sliding sleeve is bowl structure, have the location notch that tilts vertically on the edge of bowl structure, the outer rim that T shape sliding sleeve is directly held matches with the inner ring of driven rotor bearing, the driven rotor secure fit of the outer ring of driven rotor bearing and taper, matching with a joystick in the inside of the vertically sloped position groove that has on the bowl-shape edge of horizontal end of T shape sliding sleeve, rotates joystick driven rotor is moved vertically.
On the driving shaft of permanent-magnet speed governor of the present invention and driven shaft, also be fixedly installed respectively two end face permanent magnets of being separated by with air gap, each end face permanent magnet wherein by two magnetic line of force directions along at least one pair of opposite permanent magnet blocks of the pole orientation of the axial placement of driving shaft or driven shaft, permanent magnet blocks has the magnet short-cut path of soft iron formation with respect to the arranged outside of air gap, and the permanent magnet blocks of each end face permanent magnet, magnet short-cut path all are in soft iron seals, and two end face permanent magnet polarities are oppositely arranged.
Operation principle of the present invention is as follows: drive magnet rotor and drive with driving machine, driven rotor is used for driving load, when driving the magnet rotor rotation, produce relative motion between the permanent magnet on the driving magnet rotor and driven rotor, and produce eddy current at driven rotor, simultaneously eddy current produces again induced field and interacts with the permanent magnetic field that drives on the magnet rotor, follow and drive magnet rotor and rotate by identical direction of rotation thereby drive driven rotor, and with the transmission of torque of power shaft to output shaft.When load changes, because driven rotor is to be arranged at the adjuster that is made of T shape sliding sleeve etc., can make driven rotor along the axial motion of driven shaft by handling adjuster, the gap and the magnetic coupling area that drive between magnet rotor and the driven rotor are changed, thereby reach the purpose of governing speed.
In addition, owing to be provided with the end face permanent magnet on the speed regulator of the present invention, so its magnetic field forms by the magnetic field (namely driving the magnetic field that produces between magnet rotor and driven rotor) of circular radial taper magnetic with by the magnetic field of end face permanent magnet (magnetic field that is produced by the end face permanent magnet) two parts.Radially conical magnets is used for transmitting torque, and end face magnetic magnetic field then is used for the axial force between balance drive magnet rotor and driven rotor.Maximum by driving the axial gravitation that produces between magnet rotor and driven rotor when maximum when driving magnetic coupling area between magnet rotor and driven rotor, and the repulsion that is produced by the end face permanent magnet simultaneously also be maximum, thus make axial magnetic field be able to balance.The more existing scheme by the mechanism structure balancing axial thrust of this structure wants simple many, and its effect is more excellent.
The present invention has the following advantages:
1, empty cutting starts, and the magnetic coupling area of speed regulator can be adjusted to minimum, and starting current is little like this, thus the impact that in the time of can greatly reducing device start electrical network is produced;
But the control of 2 implementation procedures, permanent magnetic speed-adjusting receive (present product 4-20MA in its scope) signal that is as the criterion, and according to the Signal Regulation load speed, satisfy system requirements, fast response time;
3, because permanent-magnet speed governor is the speed regulating device of non-mechanical connection, make between load and driving machine, (being connected with motor such as blower fan) do not have the hard connection of machinery, fully by the air gap transmitting torque, isolated the transmission of vibration, therefore can greatly reduce mechanical oscillation;
4, permanent magnetic speed-adjusting gardenful of the present invention can carry out stepless speed regulation to load in the scope of 0-98%;
5, the present invention can be large in the temperature difference, temperature is high, work under overcast and rainy, the high dust, the rugged environment such as explosion-proof.(in high temperature, low temperature, humidity; Work under the various adverse circumstances such as inflammable and explosive, voltage instability and thunder and lightning.) environmental suitability is strong;
6, present device is simple in structure, failure rate is low, and maintenance cost is low, and reliability is high, safeguards few;
7, the present invention has good energy-saving effect, can improve the efficient of blower fan by the regulating load rotating speed, reduces line loss, lower motor load, so energy-saving effect is obvious;
8, can reach 30 years, long service life in the useful life of permanent magnetic speed-adjusting of the present invention;
9, the present invention is a kind of untouchable mechanical connection, does not produce humorous wave interference, without humorous wave interference;
10, the present invention is a kind of completely soft start, can realize that stall protects automatically;
11, axial force balance mode structure sieve prior art of the present invention's employing is more simple, and result of use is existing excellent.
Description of drawings
Accompanying drawing 1 is generalized section of the present invention.
Accompanying drawing 2 is the part rotation enlarged diagram of K-K position among Fig. 1.
Accompanying drawing 3 is the expansion schematic diagram of A face (also being A face among Fig. 4) among Fig. 1.
Accompanying drawing 4 is the vertically schematic diagram of section of T shape sliding sleeve.
Accompanying drawing 5 arranges schematic diagram for end face permanent magnet of the present invention.
Among the figure: 1 is T-shaped sliding sleeve; 2 is joystick; 3 are taper hull shape driving magnet rotor; 4 is the driven rotor of bullet; 5 is that the cross sections that are embedded in vertically in the soft iron 6 are the copper bar of rectangle; 6 for being in two soft irons between copper bar; 7 is one group of set of permanent magnets that is fixed in the taper shelly driving magnet rotor shell, and it is outer and parallel with the conical shell radius that its N utmost point points to conical shell; 8 drive set of permanent magnets in the magnet rotor shell for another group that separates with soft iron of 7 usefulness is fixed in the taper shelly, and its S utmost point points to conical shell outward and be parallel with the conical shell radius; 9 is the conical shell that is made of soft iron; 10 is that the soft iron of sealing permanent magnet blocks 12 and magnet short-cut path 11 is sealed; 11 is the magnet short-cut path of permanent magnets 12; 12 for being fixed in a pair of permanent magnet blocks on the driven shaft end face, and N utmost point of a permanent magnet points to the N utmost point on the right above it, and S utmost point of a permanent magnet points to the S utmost point on the right below it; 13 for being fixed in a pair of permanent magnet blocks on the driving shaft end face, and N utmost point of a permanent magnet points to the N utmost point on the left side above it, and S utmost point of a permanent magnet points to the S utmost point on the left side below it; 14 is the magnet short-cut path of permanent magnets 13; 15 is that the soft iron of sealing permanent magnet blocks 13 and magnet short-cut path 14 is sealed.
Embodiment
Explain orally concrete structure of the present invention below in conjunction with accompanying drawing.
Fig. 1 as seen, the present invention drives magnet rotor 3 by the taper shelly that is fixed on the driving shaft (namely illustrating the axle on right side), is fixed in consisting of from driven rotor 4 and other parts of tapered body on the driven shaft (namely illustrating the axle on the left side).Be fixed with the T-shaped sliding sleeve in its cross section 1 at driven shaft.The concrete structure of T shape sliding sleeve can be referring to accompanying drawing 4, and wherein the horizontal end of T shape sliding sleeve is bowl structure, has vertically sloped position groove on the edge of bowl structure, the expanded view that its concrete structure provides referring to Fig. 3.Be also shown in by Fig. 1, the straight end outer rim of T shape sliding sleeve 1 matches with the inner ring of driven rotor bearing, the driven rotor secure fit of the outer ring of driven rotor bearing and taper.The location notch that tilts vertically that has at the bowl-shape edge of horizontal end of T shape sliding sleeve 1 is inner to match with joystick 2 that driven shaft fixes with one, when rotating joystick 1, can act on the location notch on the T shape sliding sleeve 1, thereby the pulling driven rotor moves vertically, and the mutual alignment of 3 of driven rotor 4 and driving magnet rotors is adjusted.
Left side by Fig. 1 is also shown in, and is respectively arranged with the end face permanent magnet with driven shaft on the driving shaft of speed regulator of the present invention, and its concrete structure can be referring to accompanying drawing 5.The end face permanent magnet set-up mode that is arranged on the driven shaft of the present invention is: the side two opposite polarity permanent magnets 12 (namely is the left side in permanent magnets in Fig. 5, namely with the magnetic patch that indicates the N utmost point and the S utmost point magnetic patch place below it, and the polar orientations of magnetic patch 12 the right) magnet short-cut path 11 made from soft iron is set, again permanent magnets 12 and magnet short-cut path 11 usefulness soft irons 10 are encapsulated in wherein.End face permanent magnet set-up mode on driving shaft is identical with the end face permanent magnet mode that arranges at driven shaft.Be arranged between the end face permanent magnet on driving shaft and the driven shaft and be separated by with air gap.
The present invention is when operation, drive magnet rotor and driven rotor and produce relative motion, by the driving magnet rotor that rotates on the magnetic conductor on the driven rotor, particularly on set copper bar, produce eddy current, eddy current produces again induced field simultaneously, and induced field interacts with the rotating magnetic field that drives magnet rotor, thereby drive driven rotor and driven shaft along driving the identical direction rotation of magnet rotor, with the transmission of torque of power shaft to output shaft.When the required power of load reduces, adjuster is regulated the axial air-gap of permanent magnet rotor and magnetic conductor rotor, axial displacement is increased, namely by the mutual alignment between joystick adjustment driven rotor and driving magnet rotor, the zone that contacts between the driving magnet rotor of corresponding conical shell shape and the driven rotor of taper reduces, and reduces at the magnetic flux of conical surface formation closed loop, and interactional induced field reduces, magnetic moment of torsion and speed reduce thereupon, reach the purpose of speed governing.
Among the present invention, when mobile (namely come and go vertically) also makes two air gap distances between the end face permanent magnet change when adjusting driven rotor and the mutual alignment that drives between magnet rotor, and air gap changes with the variation of power output size.When the power of transmitting larger, drive the zone increase that contacts between the driven rotor of magnet rotor and taper, at this moment also larger by the axial force that produces between the driven rotor that drives magnet rotor and taper, can make again simultaneously the less of two air gaps changes between the end face permanent magnet, the balancing axial thrust that is produced by these two end face permanent magnets is more also larger; Otherwise, when the power of transmitting less, driving the zone that contacts between the driven rotor of magnet rotor and taper also diminishes, at this moment also diminished by the axial force that produces between the driven rotor that drives magnet rotor and taper, can make again simultaneously the larger of two air gaps changes between the end face permanent magnet, the balancing axial thrust that is produced by these two end face permanent magnets is also less.As seen this structure of the present invention can reach the effect of self-balancing.Its structure will want simple many by mechanical mechanism more of the prior art.
Claims (2)
1. taper permanent-magnet speed governor, comprise the driving magnet rotor and the driven rotor that are arranged at respectively on driving shaft and the driven shaft, bearing, support, it is characterized in that: driving shaft be fixedly installed the conical shell made by soft iron and be fixed in that set of permanent magnets on the conical shell inner surface consists of the driving magnet rotor, be fixedly installed the driven rotor of the taper that is consisted of by soft magnetic material at driven shaft, and the driven rotor of bullet is positioned at the conical shell that drives magnet rotor, and and drive between magnet rotor and be separated by with air gap, wherein: each set of permanent magnets that drives on the magnet rotor fixedly forms by four prismatic polar orientation permanent magnet blocks identical and its magnetic line of force direction and radial parallel are adjacent, each is organized the soft material that equals a permanent magnet blocks width with a width between set of permanent magnets and separates, and two adjacent set of permanent magnets polarity arrange on the contrary; Driven rotor is made with soft iron, on the outer surface of driven rotor vertically spacing be fixed with the copper bar that the cross section is rectangle, be separated by with soft iron between each copper bar, and the cross-sectional width of each copper bar equates with the soft iron cross-sectional width of being separated by; Be fixed with a T-shaped sliding sleeve in its cross section that can move vertically at driven shaft, the horizontal end of T shape sliding sleeve is bowl structure, have the location notch that tilts vertically on the edge of bowl structure, the outer rim that T shape sliding sleeve is directly held matches with the inner ring of driven rotor bearing, the driven rotor secure fit of the outer ring of driven rotor bearing and taper, matching with a joystick in the inside of the vertically sloped position groove that has on the bowl-shape edge of horizontal end of T shape sliding sleeve, rotates joystick driven rotor is moved vertically.
2. taper permanent-magnet speed governor according to claim 1, it is characterized in that being fixedly installed respectively on driving shaft and the driven shaft two end face permanent magnets of being separated by with air gap, each end face permanent magnet wherein by two magnetic line of force directions along at least one pair of opposite permanent magnet blocks of the pole orientation of the axial placement of driving shaft or driven shaft, permanent magnet blocks has the magnet short-cut path of soft iron formation with respect to the arranged outside of air gap, and the permanent magnet blocks of each end face permanent magnet, magnet short-cut path all are in soft iron seals, and two end face permanent magnet polarities are oppositely arranged.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012104782390A CN103023271A (en) | 2012-11-22 | 2012-11-22 | Conical permanent magnet speed controller |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012104782390A CN103023271A (en) | 2012-11-22 | 2012-11-22 | Conical permanent magnet speed controller |
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| CN103023271A true CN103023271A (en) | 2013-04-03 |
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| CN2012104782390A Pending CN103023271A (en) | 2012-11-22 | 2012-11-22 | Conical permanent magnet speed controller |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103414312A (en) * | 2013-08-15 | 2013-11-27 | 甘肃省科学院磁性器件研究所 | Stacked type permanent magnet speed controller |
| CN104539132A (en) * | 2014-12-17 | 2015-04-22 | 诸暨和创磁电科技有限公司 | Cone-type permanent magnet speed regulator |
| CN105207429A (en) * | 2015-05-04 | 2015-12-30 | 北京华电润泽环保有限公司 | Speed-regulating type permanent magnet eddy current coupling |
| CN106122486A (en) * | 2016-09-09 | 2016-11-16 | 广西科技大学 | A kind of method increasing magnetic sealing device torque |
| CN110504817A (en) * | 2019-07-30 | 2019-11-26 | 江苏大学 | A kind of rail slide type Adjustuble speed magnetic mechanical couple |
| CN112332632A (en) * | 2020-10-26 | 2021-02-05 | 三峡大学 | Structure for increasing magnetic torque of magnetic coupling in limited space |
Citations (5)
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| CN1248354A (en) * | 1997-02-20 | 2000-03-22 | 马格纳福斯公司 | Adjustable magnetic coupler |
| CN201827326U (en) * | 2010-02-11 | 2011-05-11 | 甘肃省科学院磁性器件研究所 | Magnetic coupler |
| CN202183724U (en) * | 2011-07-26 | 2012-04-04 | 融德（大连）机电工程设备有限公司 | Speed-adjustable magnetic coupler with cam mechanism for adjusting clearance between rotors |
| CN202197206U (en) * | 2011-09-11 | 2012-04-18 | 余虹锦 | Novel conical inner rotor asynchronous permanent magnet coupling speed regulator of oblique magnetic field |
| CN202906720U (en) * | 2012-11-22 | 2013-04-24 | 甘肃省科学院磁性器件研究所 | Cone permanent magnetic speed controller |
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2012
- 2012-11-22 CN CN2012104782390A patent/CN103023271A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1248354A (en) * | 1997-02-20 | 2000-03-22 | 马格纳福斯公司 | Adjustable magnetic coupler |
| CN201827326U (en) * | 2010-02-11 | 2011-05-11 | 甘肃省科学院磁性器件研究所 | Magnetic coupler |
| CN202183724U (en) * | 2011-07-26 | 2012-04-04 | 融德（大连）机电工程设备有限公司 | Speed-adjustable magnetic coupler with cam mechanism for adjusting clearance between rotors |
| CN202197206U (en) * | 2011-09-11 | 2012-04-18 | 余虹锦 | Novel conical inner rotor asynchronous permanent magnet coupling speed regulator of oblique magnetic field |
| CN202906720U (en) * | 2012-11-22 | 2013-04-24 | 甘肃省科学院磁性器件研究所 | Cone permanent magnetic speed controller |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103414312A (en) * | 2013-08-15 | 2013-11-27 | 甘肃省科学院磁性器件研究所 | Stacked type permanent magnet speed controller |
| CN104539132A (en) * | 2014-12-17 | 2015-04-22 | 诸暨和创磁电科技有限公司 | Cone-type permanent magnet speed regulator |
| CN105207429A (en) * | 2015-05-04 | 2015-12-30 | 北京华电润泽环保有限公司 | Speed-regulating type permanent magnet eddy current coupling |
| CN105207429B (en) * | 2015-05-04 | 2018-05-08 | 北京华电润泽环保有限公司 | Speed-adjusting-type permanent-magnet eddy-current coupling |
| CN106122486A (en) * | 2016-09-09 | 2016-11-16 | 广西科技大学 | A kind of method increasing magnetic sealing device torque |
| CN110504817A (en) * | 2019-07-30 | 2019-11-26 | 江苏大学 | A kind of rail slide type Adjustuble speed magnetic mechanical couple |
| CN112332632A (en) * | 2020-10-26 | 2021-02-05 | 三峡大学 | Structure for increasing magnetic torque of magnetic coupling in limited space |
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Application publication date: 20130403 |