CN110165821A - A kind of novel horizontal self-evacuating vacuum room high integration energy accumulation device for fly wheel - Google Patents
A kind of novel horizontal self-evacuating vacuum room high integration energy accumulation device for fly wheel Download PDFInfo
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- CN110165821A CN110165821A CN201910384604.3A CN201910384604A CN110165821A CN 110165821 A CN110165821 A CN 110165821A CN 201910384604 A CN201910384604 A CN 201910384604A CN 110165821 A CN110165821 A CN 110165821A
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
- H02K7/02—Additional mass for increasing inertia, e.g. flywheels
- H02K7/025—Additional mass for increasing inertia, e.g. flywheels for power storage
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
- H02K7/08—Structural association with bearings
- H02K7/09—Structural association with bearings with magnetic bearings
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/16—Mechanical energy storage, e.g. flywheels or pressurised fluids
Abstract
The invention discloses a kind of novel horizontal self-evacuating vacuum room high integration energy accumulation device for fly wheel, vacuum chamber is formed by shell, upper end is the Three Degree Of Freedom magnetic bearing being fixedly connected by bracket with shell in vacuum chamber comprising radial direction magnetic bearing, axial magnetic bearing and permanent magnet；The lower end of Three Degree Of Freedom magnetic bearing is flywheel rotor, simplex winding outer rotor bearing-free motor is located at the lower end of flywheel rotor, its rotor is assembled in the annular groove of flywheel rotor lower surface, stator is fixed by the bracket in shell lower end, therefore it is balanced by the five degree of freedom that Three Degree Of Freedom magnetic bearing cooperates simplex winding outer rotor bearing-free motor to realize flywheel rotor, control mode is simplified, integrated level is improved；Upper shell is equipped with a horizontal composite vacuum pump, and vacuum pump is the dual-rotor structure of left and right mirror symmetry, improves vacuum degree and pumping speed.
Description
Technical field
The present invention relates to Flywheel energy storage technique field, refer specifically to a kind of Three Degree Of Freedom magnetic bearing cooperation simplex winding outer rotor without
Bearing electric machine realizes five degree of freedom balance, and using the energy accumulation device for fly wheel of horizontal vacuum pump self-evacuating vacuum.
Background technique
With the rapid development of global economy, the consumption of natural resources increasingly sharpens, and facing mankind natural resources will disappear
Consumption is totally with the great difficult problem of environmental pollution, and therefore, people also more focus on while seeking environmental protection, clean new energy
How the existing energy and the advanced energy storage technology of active development more efficiently utilized.Traditional chemical storage batteries energy storage is close
It spends big, cheap, is widely adopted, it require that periodic maintenance, the service life is short, energy loss is big, the charging time is long, can also
It causes environment pollution.Since flywheel energy storage system has many advantages, such as the high-energy-density, long-life, high efficiency, pollution-free,
Become the important means of Green Sustainable using flywheel energy storage system energy storage.
Traditional flywheel energy storage system supports flywheel rotor, an axial magnetic bearing unit using five degree of freedom magnetic bearing
Axial single-degree-of-freedom is controlled, two radial direction magnetic bearing units control rotor top and bottom two-freedom respectively.Freely using five
The flywheel energy storage system of degree magnetic bearing bearing efficiently solves the friction problem between rotor and bearing, but due to system structure
Complexity, however it remains many intrinsic problems cause flywheel energy storage such as due to that need to use multiple magnetic bearing unit supporting rotors
Systems bulky, axially longer, system critical speed is low, limits the further promotion of Speed of Reaction Wheels and power.
In addition, flywheel energy storage system is generally vacuumized using a set of external vertical vacuum system both at home and abroad at present, pumping speed
Degree is slow, and difficulty is relatively large.The prior art is related to a kind of composite molecular pump of first turbine molecular pump in conjunction with molecular drag pump,
The gap blade for cancelling turbomolecular pump, is made into the continuous blade of pump rotor, in order to reduce because centrifugal force leads to greatly leaf
Piece slide so as to cause failure occur, still, the turbine series of the vacuum pump of this structure is less, and device is not achieved in ideal
Requirement of the inlet side to pumping speed, and the transitional processes of stage of turbine to draft stage are shorter affects mentioning for the speed of exhaust and compression ratio
The requirement of high vacuum high-performance flywheel energy storage system is not achieved in height；Vertical structure is but also flywheel energy storage system center of gravity is increased, no
Conducive to the reliability service of system；In addition, being vacuumized using single pump rotor, not only pumping speed is pessimistic, but also not energy-efficient.
Therefore, people need that a kind of simple structure, convenient control, cheap, energy storage density is higher and steady using operation
The high integration flywheel energy storage system that fixed reliable, the higher vacuum pump of pumping speed vacuumizes.
Summary of the invention
The purpose of the invention is to overcome, conventional flywheel energy storage device integrated level is not high, control is complicated and energy storage density
Not high disadvantage proposes a kind of energy accumulation device for fly wheel of Three Degree Of Freedom magnetic bearing cooperation simplex winding outer rotor bearing-free motor, letter
Change the structure and control mode of energy accumulation device for fly wheel, while improving the integrated level and energy storage density of flywheel energy storage system, and
It reduces costs and is lost.In addition, the present invention proposes a kind of horizontal to overcome the slow disadvantage of current external vacuum system pumping speed
Birotor composite vacuum pump improves the vacuum pumping speed of vacuum chamber.
The purpose of the present invention is what is be implemented with the following technical solutions:
A kind of novel horizontal self-evacuating vacuum room high integration energy accumulation device for fly wheel, including birotor composite vacuum pump, it is described
Birotor composite vacuum pump is lying in upper shell, and interior of shell is successively arranged Three Degree Of Freedom magnetic bearing from top to bottom, flywheel turns
Son and simplex winding outer rotor bearing-free motor, Three Degree Of Freedom magnetic bearing, simplex winding outer rotor bearing-free motor respectively with shell
Inner surface upper and lower side is fixed, and gap, simplex winding outer rotor bearing-free motor are equipped between Three Degree Of Freedom magnetic bearing and flywheel rotor
It is connected with flywheel rotor.
In above scheme, the birotor composite vacuum pump is the dual-rotor structure of both ends mirror symmetry, and prime is turbine
Formula, rear class are trail-type composite vacuum pump.
In above scheme, the birotor composite vacuum pump includes pump stator and pump rotor, and the pump rotor includes symmetrical
The pump rotor axis of structure, pump rotor axis one end be it is round table-like, be symmetrically arranged with prime turbine rotor blade close to pump rotor axis middle section
Piece, pump rotor axis both ends are symmetrically arranged with rear class traction helical blade, and the pump stator includes prime turbine fixed blade, prime whirlpool
Wheel fixed blade is alternatively arranged with prime turbine moving blade, and prime turbine fixed blade is fixed on pump stator inner surface of outer cover.
In above scheme, the Three Degree Of Freedom magnetic bearing is radially followed successively by radial direction magnetic bearing, interior lateral deviation by the center of circle
Permanent magnet is set, inside axial magnetic bearing, outside bias permanent magnet, outside axial magnetic bearing.
In above scheme, the radial direction magnetic bearing includes radial direction magnetic bearing iron core, is round table among radial direction magnetic bearing iron core
Shape boss, outside are that section is L-shaped boss, gap are equipped between L shape boss and round table shape boss, and L shape boss is uniformly set
There are n opening, n >=3.
In above scheme, the inside, outside axial magnetic bearing iron core boss it is even be equipped with n be open, inside, outside
The opening of axial magnetic bearing iron core boss is radially located at same straight line, n >=3.
In above scheme, the upper surface of the flywheel rotor Flywheel disc be equipped with annular convex platform, annular convex platform and L shape boss and
Clearance fit between round table shape boss, Flywheel disc lower surface are provided with annular groove.
In above scheme, the rotor of the simplex winding outer rotor bearing-free motor is assembled in inside annular groove.
The beneficial effect of the present invention compared with prior art is:
1, the present invention is breached conventional flywheel energy storage device and is realized using the limitation for having axis to design using shaftless design
Motor flywheels integration, reduces the axial length of flywheel energy storage system, improves the integrated level, space utilization rate and storage of system
It can density.
2, the present invention breaches conventional flywheel battery by the way of five degree of freedom magnetic bearings control, freely using one three
Degree magnetic bearing cooperates the mode of simplex winding outer rotor bearing-free motor to realize that five degree of freedom balances, and is realized using bearing-free motor
One radial two parameter compensator, outside the advantages of keeping the bearing of five degree of freedom magnetic bearing, axial dimension reduces, and breaks through higher
Revolving speed and powerful limitation fundamentally change the structure and control of conventional flywheel energy-storage system, have widened flywheel energy storage
Systematic difference range.
3, vacuum environment of the invention realizes that horizontal pump blade is pacified on the horizontal axis by horizontal birotor composite vacuum pump
Dress, substantially increases the series of turbine, and improve stage of turbine to the transitional processes of draft stage, improves the speed of exhaust and compression
Than air inlet mouth is located at pump middle position, is evacuated using birotor two sides, and the combination pump rotor coaxial connection of two sides can use one
A motor drag, it is not only energy saving, but also rotor blade geometric dimension and revolving speed under the same conditions, the speed of evacuation reaches as high as
2 times of vertical pump.
Detailed description of the invention
Fig. 1 is stereochemical structure cross-sectional view of the present invention；
Fig. 2 is the pedestal tomograph of shell；
Fig. 3 is horizontal birotor composite vacuum pump internal structure front view；
Fig. 4 is the tomograph of the composite evacuated pump rotor of horizontal birotor；
Fig. 5 is the bottom view of Three Degree Of Freedom magnetic bearing；
Fig. 6 is the three-dimensional structure cross-sectional view of Three Degree Of Freedom magnetic bearing；
Fig. 7 is the tomograph of Three Degree Of Freedom magnetic axis support bracket；
Fig. 8 is the three-dimensional structure cross-sectional view of flywheel rotor；
Fig. 9 is simplex winding outer rotor bearing-free motor stator support three-dimensional structure cross-sectional view；
Figure 10 is the top view of simplex winding outer rotor bearing-free motor；
Figure 11 is the biasing magnetic flux schematic diagram that permanent magnet generates in Three Degree Of Freedom magnetic bearing of the invention；
Figure 12 is the schematic diagram that axial magnetic bearing realizes axial single-degree-of-freedom balance control when the invention works；
Figure 13 is the schematic diagram that radial direction magnetic bearing realizes radial two degrees of freedom balance control when the invention works；
Figure 14 is the original that simplex winding outer rotor bearing-free motor realizes radial two degrees of freedom balance control when the invention works
Reason figure.
In figure: 1. shells；11. upper end cover；111. upper end cover centre bore；12. outer body；13. lower cover；2. supporting bottom
Seat；21. base support；22. limit hole；3. horizontal birotor composite vacuum pump；31. vacuum pump stator；311. vacuum pump stator
Shell；312. vacuum pump gas outlets；313. air-inlet of vacuum pump；314. prime turbine fixed blades；32. vacuum pump rotor；321.
Vacuum pump shaft；322. prime turbine moving blades；323. rear classes draw helical blade；33. vacuum pump support；4. bracket；41-
43. spoke；44. center disk；5. Three Degree Of Freedom magnetic bearing；51. radial direction magnetic bearing；511. radial direction magnetic bearing iron cores；512. diameter
To magnetic bearings control coil；52. axial magnetic bearing；521. axial magnetic bearing iron cores；522. axial magnetic bearing control coils；53.
Bias permanent magnet；531. insides bias permanent magnet；532. outsides bias permanent magnet；6. flywheel rotor；61. Flywheel disc；62. flywheel
Disk upper end annular convex platform；63. Flywheel disc lower end annular groove；7. simplex winding outer rotor bearing-free motor；71. simplex winding outer rotor
Bearing-free motor stator；72. simplex winding outer rotor bearing-free motor rotor；73. simplex winding outer rotor bearing-free motor stator around
Group；8. bracket.
Specific embodiment
In order to make the purpose of the present invention, technical solution and advantage are more clearly understood, below with reference to example, to the present invention
It is further elaborated.It should be appreciated that specific implementation described herein as is only applicable to explain the present invention, it is not used to limit
The present invention.
As shown in Figure 1, be the cavity formed by shell 1 outside energy storage device of the invention, shell by upper end cover 11,
Outer body 12 and lower cover 13 form, and outer 12 upper end of body is tightly fastened with upper end cover 11 to be connect, outer 12 lower end of body and lower end
Lid 13 is tightly fastened connection.The centre of upper end cover 11 offers centre bore 111, and molecular pump passes through the aperture for the sky in cavity
Gas is taken away, makes to form vacuum environment in cavity.Shell 1 is supported by the shell support base 2 of its lower end, shell support base 2
It is made of base support 21 and six limit holes 22, the upper surface of base support 21 and the lower surface of shell lower cover 13 are closely solid
Fixed connection.The structure of shell support base 2 is as shown in Fig. 2, limit hole 22 is used to for energy storage device and other component being connected.
Vacuum chamber of the invention is realized by horizontal birotor composite vacuum pump 3, and horizontal birotor composite vacuum pump 3 is
The dual-rotor structure of the right and left mirror symmetry, the right and left be prime be turbine type, rear class is trail-type compound true
Sky pump is made of pump stator 31, pump rotor 32 and pump support frame 33, and pump support frame 33 is located at the lower end of pump stator 31, and with pump
Stator 31 is linked together, and the lower surface of pump support frame 33 is closely connect with upper shell lid 11, and pump rotor 32 is located at pump stator 31
It is internal.Referring to Fig. 3, pump stator 31 is by cylindrical pump stator shell 311, left and right gas outlet 312, air inlet 313 and left and right
Both sides prime turbine fixed blade 314 forms, and gas outlet 312 is located at the lower end of cylindrical 311 two sides of pump stator shell, air inlet
313 are located at 311 bottom end of pump stator shell, air inlet 313 with the centre bore 111 of upper end cover is coaxial closely connect, and the two is coaxial；
Pump rotor 32 draws helical blade by pump rotor axis 321, the right and left prime turbine moving blade 322 and the right and left rear class
323 compositions, the three-dimensional structure diagram of pump rotor 32 is as shown in figure 4, pump rotor axis 321 passes through bearing and pump stator shell 311 or so
Two sides are fixedly connected, and pump rotor axis 321 is symmetrical structure, one end be it is round table-like, symmetrically set close to 321 middle section of pump rotor axis
There is prime turbine moving blade 322,321 both ends of pump rotor axis are symmetrically arranged with rear class traction helical blade 323；Prime turbine determines leaf
Piece 314 is alternatively arranged with prime turbine moving blade 322, and prime turbine fixed blade 314 is fixed on 311 inner surface of pump stator shell
On.
11 inner surface mounting bracket 4 (Fig. 7) of upper end cover, 4 center of bracket is center disk 44, and the axis with center disk 44 is
Center, is divided into the spoke 41,42,43 of 120o between radially extending three toward external radiation, the end of spoke is and center disk
44 coaxial annular convex platform, the side of boss are closely connect with outer body 12, and upper surface is closely connect with upper end cover 11.Bracket 4
Lower surface closely connect with the upper surface of Three Degree Of Freedom magnetic bearing 5, and spoke 41,42,43 respectively with Three Degree Of Freedom magnetic bearing
The opening of iron core L shape boss is staggered 60o, and the radius of spoke is greater than the radius of outside axial direction magnetic bearings control coil 522, as Fig. 5,
Shown in Fig. 6.
As shown in figure 5, Three Degree Of Freedom magnetic bearing 5 is by 53 groups of permanent magnet of radial direction magnetic bearing 51, axial magnetic bearing 52 and biasing
At, three's arranged in co-axial alignment, and upper surface is same plane, generally disc structure.Fig. 5, Fig. 6 are Three Degree Of Freedom magnetic bearing 5
Bottom view and cross-sectional view, radially arranging outward successively from the center of circle is radial direction magnetic bearing 51, inside biasing permanent magnet 531, inside
Axial magnetic bearing, outside bias permanent magnet 532, outside axial magnetic bearing.Referring to Fig. 5, Fig. 6, radial direction magnetic bearing 51 is by radial magnetic
Bearing iron core 511 and radial direction magnetic bearing control coil 512 form, and are round table shape boss among radial direction magnetic bearing iron core 511, outward
It is that section is equipped with gap for L-shaped boss between L shape boss and round table shape boss, and L shape boss opens an angle at interval of 120o
Degree is the opening of 10o, and three groups of radial direction magnetic bearing control coils 512 are rotating around on three L shape boss.Axial magnetic bearing 52 is by interior
Side, outside axial magnetic bearing iron core 521 and inside, outside axial direction magnetic bearings control coil 522 form, inside, outside axial magnetic
It is 10 that the boss of bearing iron core 521, which opens an angle at interval of 120o,oOpening, inside and outside three groups of axial magnetic bearing control coils
522 rotating around on three boss of inside, outside axial magnetic bearing iron core.Preferably, the opening between L shape boss, inside
The opening between opening, outside axial magnetic bearing iron core boss between axial magnetic bearing iron core boss is radially located at same
Straight line.It is circular ring structure that inside, which biases permanent magnet 531 and outside biasing permanent magnet 532, and is radial magnetizing；Inside biasing
Permanent magnet 531 is located between inside axial magnetic bearing iron core and radial direction magnetic bearing iron core 511, and outside biasing permanent magnet 532 is located at
Between inside axial magnetic bearing iron core and inside axial magnetic bearing iron core.
Flywheel rotor 6 is located at 5 lower end of Three Degree Of Freedom magnetic bearing, and is equipped with gap, flywheel rotor 6 and outer body between the two
12 also are provided with gap.
Fig. 8 show the cross-sectional view of flywheel rotor 6, and the upper surface of Flywheel disc 61 is equipped with a coaxial annular boss 62, boss
Clearance fit between 62 and radial direction magnetic bearing 51L shape boss and round table shape boss realizes the radial control of flywheel.Flywheel disc 61
Lower surface be provided with coaxial annular slot 63, for the rotor 71 of assembly simplex winding outer rotor bearing-free motor, table in annular groove 63
Radius surface is smaller than 8 inner surface radius of bracket, provides simplex winding outer rotor bearing-free motor rotor 71, simplex winding outer rotor bearing-free
Air gap between motor stator 72, bracket 8, such as Fig. 1.
The structure of bracket 8 is as shown in figure 9, bracket 8 is annular shape, and section is L shape, simplex winding outer rotor bearing-free motor
Stator 72 is fixed on bracket 8.Figure 10 is the cross-sectional plan view of simplex winding outer rotor bearing-free motor 7, rotor 71
Lateral surface is closely connect with the lateral surface of annular groove 63, and motor stator 72 is located inside rotor 71, and motor stator 72 is full of
Stator winding 73, the gas when being passed through three-phase alternating current in motor stator winding 73, between motor stator 72 and rotor 71
The magnetic field generated in gap and rotor 71 interact, and generate radial suspending power and circumferential turning moment, turn motor
Son 71 drives flywheel rotor 6 to rotate, and realizes energy storage.
When the invention works, the unilateral static suspension and five degree of freedom balance of flywheel rotor 6 be can be realized.In axial control
The medial and lateral axial magnetic bearing control coil 522 of aspect, Three Degree Of Freedom magnetic bearing 5 passes to direct current, with medial and lateral axial magnetic
Bearing iron core 521 forms electromagnet, changes 6 axially loaded of flywheel rotor by changing the size and Orientation of control direct current
Size and Orientation realizes the control to flywheel rotor axial direction one degree of freedom.In terms of radial control, Three Degree Of Freedom magnetic bearing 5
Radial direction magnetic bearing control coil 512 pass to direct current, with radial direction magnetic bearing iron core 511 form electromagnet, pass through change control
The size and Orientation of direct current changes the size and Orientation of resultant force suffered by Flywheel disc upper end annular convex platform 62, realizes flywheel rotor
The control of the radial translational degree of freedom of two of upper end；Flywheel disc lower end is simplex winding outer rotor bearing-free motor 7, logical by controlling
Enter the three-phase alternating current of stator winding coil 73, the axial-rotation of flywheel rotor not only may be implemented, but also flywheel rotor may be implemented
The control of the radial translational degree of freedom of two of lower end.Finally, pass through Three Degree Of Freedom magnetic bearing 5 and simplex winding outer rotor bearing-free electricity
The five degree of freedom balance of flywheel rotor 6 is realized in the cooperation of machine.When flywheel rotor 6 works normally, 32 high speed of pump rotor of vacuum pump 3
322 surface collision of prime turbine moving blade of rotation, gas molecule and high-speed rotation obtains momentum, and in prime turbine moving blade
322 and prime turbine fixed blade 314 interaction under generate directed flow, to both sides arrange to the rear class of vacuum pump draw spiral
At blade 323.Due to longer close to intermediate turbo blade in vacuum pump 3, pumping area is larger, and pumping speed is high, so as to obtain
Clean ultrahigh vacuum.It is gradually reduced from centre toward the length of both sides turbine moving blade 322 and turbine fixed blade 314, while benefit
The characteristics of being gradually increased with 321 radius of truncated cone-shaped pump rotor axis nature transition, drains into draft stage for gas molecule.Gas molecule exists
Under the action of pump rotor axis 321 and rear class traction helical blade 323, along vacuum pump stator shell 311 and pump rotor axis 321 it
Between spiral groove channel be compressed to the both ends of pump rotor, by 312 row Xiang great Qi of left and right gas outlet.Relatively due to spiral groove deep
Shallowly, pumping area is smaller, and compression is bigger, and is vacuumized using birotor, and pumping speed can be improved one times.It is specific as follows:
The realization of unilateral static suspension balance: referring to Figure 11, inside biases permanent magnet 531 and outside biases permanent magnet 532
The biasing magnetic flux of generation is as dashed lines and arrow shown in, inside biases the magnetic flux that permanent magnet 531 generates and biases permanent magnetism from inside
The pole inner surface N of body 531 starts, and a part passes through the outside L shape boss of radial direction magnetic bearing iron core 511, using Flywheel disc
The outer radial air gap of upper end annular convex platform 62, followed by boss 62, Flywheel disc 61, axial air-gap, inside axial magnetic bearing iron
Core eventually passes back to the pole outer surface S of inside biasing permanent magnet 531；Another part passes through the centre of radial direction magnetic bearing iron core 511
Boss, using the radially inside air gap of Flywheel disc upper end annular convex platform 62, followed by boss 62, Flywheel disc 61, axial air-gap,
Inside axial magnetic bearing iron core eventually passes back to the pole S of inside biasing permanent magnet 531.Outside biases the biasing that permanent magnet 532 generates
Magnetic flux is since the pole N of outside biasing permanent magnet 532, successively by outside axial magnetic bearing iron core, axial air-gap, Flywheel disc
61, axial air-gap, inside axial magnetic bearing iron core eventually pass back to the pole S of outside biasing permanent magnet 532.When flywheel rotor 6 does not have
When being disturbed, the axial air-gap magnetic flux between medial and lateral axial magnetic bearing iron core 521 and Flywheel disc 61 is generated to flywheel rotor
Gravitational equilibrium suffered by 6 upward attractions and flywheel rotor 6,62 inner side and outer side radial air gap of Flywheel disc upper end annular convex platform
The power that magnetic flux generates also balances, the center overlapping of axles of flywheel rotor 6 and Three Degree Of Freedom magnetic bearing 5, it is achieved that flywheel rotor
Unilateral static suspension balance.
The realization of axial one degree of freedom balance: right when flywheel rotor is offset downward by axial disturbance referring to Figure 12
Axial magnetic bearing control coil 522 is powered, and the magnetic flux of generation is as shown in solid line in Figure 12 and arrow, the magnetic flux and inside, outside
Axial air-gap magnetic flux between axial magnetic bearing iron core and Flywheel disc 6 is superimposed, and keeps axial magnetic bearing 52 to flywheel rotor 6 upward
Attraction increases, and then moves up flywheel rotor 6, returns to equilbrium position.On the contrary, when flywheel rotor 6 is disturbed by upward
When dynamic, then axial air-gap magnetic flux is cancelled, and the attraction upward to flywheel rotor 6 of axial magnetic bearing 52 reduces, flywheel rotor 6 to
Lower movement simultaneously returns to equilbrium position.
Magnetic bearing radial direction two degrees of freedom: referring to Figure 13, establishing the coordinate system in tri- directions A, B, C in sagittal plane, when winged
Rotor 6 is taken turns by Radial Perturbation to when the offset of the direction B, is powered to radial magnetic bearings control coil 512, the magnetic flux of generation such as Figure 13
Shown in middle solid line and arrow, which is superimposed with the radial air gap magnetic flux in 62 outside of Flywheel disc upper end boss, with 62 inside of boss
Radial air gap magnetic flux offset, cause the suffered resultant force of boss 62 to be radially directed direction inward, the i.e. opposite direction of B, to make to fly
The opposite direction of wheel rotor 6 toward B are mobile and return to equilbrium position.Similarly, when the disturbance by the direction A, the direction C, radial magnetic axis
Holding 51 equally can make flywheel rotor 6 return to equilbrium position.
The realization of simplex winding outer rotor bearing-free motor radial direction two degrees of freedom balance: referring to Figure 14, in simplex winding outer rotor
The extremely upper a set of winding 73 of addition of the stator tooth of bearing-free motor 7, each tooth pole winding current individually control.It is built in sagittal plane
The coordinate system of vertical α, β both direction, by taking A phase as an example, in Figure 14 A1, A2, A3, A4 respectively indicate four teeth of A phase extremely on winding.
When flywheel rotor 6 is deviated by Radial Perturbation to the direction α, the electric current in A1 and A3 winding is controlled, i.e. in increase A1
Electric current, reduce the electric current in A3, then simplex winding outer rotor bearing-free motor rotor 71 is subject to resultant force is directed toward the opposite direction of α,
The opposite direction that rotor 71 drives flywheel toward α is mobile and returns to equilbrium position, and the disturbance in the direction β is also similar.Other B phase and
C facies principle is similar with the control mode of A phase, and the mode be connected in turn using three-phase, by founding mathematical models, real-time tracking is each
Electric current in phase winding, by adjusting the relative size of electric current, i.e., the amplitude of the changeable synthesis magnetic pull acted on rotor
And direction, realize the balance of motor radial direction two degrees of freedom.
According to the above, the present invention can be realized.To those skilled in the art without departing substantially from spirit of the invention
Other change and modification with making in the case where protection scope, are included within the scope of the present invention.
Claims (8)
1. a kind of novel horizontal self-evacuating vacuum room high integration energy accumulation device for fly wheel, which is characterized in that compound true including birotor
Sky pump (3), the birotor composite vacuum pump (3) are lying in shell (1) upper end, are successively arranged from top to bottom inside shell (1)
Three Degree Of Freedom magnetic bearing (5), flywheel rotor (6) and simplex winding outer rotor bearing-free motor (7), Three Degree Of Freedom magnetic bearing (5),
Simplex winding outer rotor bearing-free motor (7) is fixed with shell (1) inner surface upper and lower side respectively, Three Degree Of Freedom magnetic bearing (5) and fly
It takes turns and is equipped with gap between rotor (6), simplex winding outer rotor bearing-free motor (7) and flywheel rotor (6) are connected.
2. novel horizontal self-evacuating vacuum room high integration energy accumulation device for fly wheel according to claim 1, which is characterized in that described
Birotor composite vacuum pump (3) is the dual-rotor structure of both ends mirror symmetry, and prime is turbine type, rear class is trail-type compound
Vacuum pump.
3. novel horizontal self-evacuating vacuum room high integration energy accumulation device for fly wheel according to claim 2, which is characterized in that described
Birotor composite vacuum pump (3) includes pump stator (31) and pump rotor (32), and the pump rotor (32) includes the pump of symmetrical structure
Armature spindle (321), pump rotor axis (321) one end be it is round table-like, be symmetrically arranged with prime whirlpool close to pump rotor axis (321) middle section
It takes turns movable vane piece (322), pump rotor axis (321) both ends are symmetrically arranged with rear class traction helical blade (323), the pump stator (31)
Including prime turbine fixed blade (314), prime turbine fixed blade (314) is alternatively arranged with prime turbine moving blade (322), prime
Turbine fixed blade (314) is fixed on pump stator shell (311) inner surface.
4. novel horizontal self-evacuating vacuum room high integration energy accumulation device for fly wheel according to claim 1, which is characterized in that described
Three Degree Of Freedom magnetic bearing (5) is radially followed successively by radial direction magnetic bearing (51), inside biasing permanent magnet (531) by the center of circle, interior
Side axial magnetic bearing, outside bias permanent magnet (532), outside axial magnetic bearing.
5. novel horizontal self-evacuating vacuum room high integration energy accumulation device for fly wheel according to claim 4, which is characterized in that described
Radial direction magnetic bearing (51) includes radial direction magnetic bearing iron core (511), is round table shape boss among radial direction magnetic bearing iron core (511), outside
Portion is that section is L-shaped boss, gap is equipped between L shape boss and round table shape boss, and L shape boss is uniformly provided with n opening,
n≥3。
6. novel horizontal self-evacuating vacuum room high integration energy accumulation device for fly wheel according to claim 4, which is characterized in that described
Inside, outside axial magnetic bearing iron core boss it is even be equipped with n and be open, inside, outside axial magnetic bearing iron core boss are opened
Bore is located at same straight line, n >=3 upwards.
7. according to claim 1 or 4 novel horizontal self-evacuating vacuum room high integration energy accumulation device for fly wheel, which is characterized in that
The upper surface of flywheel rotor (6) Flywheel disc (61) is equipped with annular convex platform (62), annular convex platform (62) and L shape boss and round table
Clearance fit between shape boss, Flywheel disc (61) lower surface are provided with annular groove (63).
8. novel horizontal self-evacuating vacuum room high integration energy accumulation device for fly wheel according to claim 1, which is characterized in that described
It is internal that the rotor of simplex winding outer rotor bearing-free motor (7) is assembled in annular groove (63).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910384604.3A CN110165821B (en) | 2019-05-09 | 2019-05-09 | Horizontal self-vacuumizing chamber high-integration flywheel energy storage device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910384604.3A CN110165821B (en) | 2019-05-09 | 2019-05-09 | Horizontal self-vacuumizing chamber high-integration flywheel energy storage device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110165821A true CN110165821A (en) | 2019-08-23 |
| CN110165821B CN110165821B (en) | 2021-04-20 |
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| CN201910384604.3A Active CN110165821B (en) | 2019-05-09 | 2019-05-09 | Horizontal self-vacuumizing chamber high-integration flywheel energy storage device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021243871A1 (en) * | 2020-06-01 | 2021-12-09 | 裘根富 | Maglev flywheel energy storage motor/power generator |
| CN115622325A (en) * | 2022-12-16 | 2023-01-17 | 华驰动能(北京)科技有限公司 | Energy storage flywheel capable of automatically vacuumizing and energy storage equipment with energy storage flywheel |
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| CN108471193A (en) * | 2018-03-20 | 2018-08-31 | 江苏大学 | A kind of highly integrated energy accumulation device for fly wheel |
| CN108547867A (en) * | 2018-03-16 | 2018-09-18 | 江苏大学 | A kind of three degree of freedom spherical hybrid magnetic bearing of axial direction self-loop |
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| US4057369A (en) * | 1973-07-21 | 1977-11-08 | Maschinenfabrik Augsburg-Nurnberg Ag | Vacuum pump having a rotor supported in the interior of its casing |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2021243871A1 (en) * | 2020-06-01 | 2021-12-09 | 裘根富 | Maglev flywheel energy storage motor/power generator |
| CN115622325A (en) * | 2022-12-16 | 2023-01-17 | 华驰动能(北京)科技有限公司 | Energy storage flywheel capable of automatically vacuumizing and energy storage equipment with energy storage flywheel |
| CN115622325B (en) * | 2022-12-16 | 2023-03-28 | 华驰动能(北京)科技有限公司 | Energy storage flywheel capable of automatically vacuumizing and energy storage equipment with energy storage flywheel |
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| CN110165821B (en) | 2021-04-20 |
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