CN203532525U - Magnetic suspension and passive dynamic pressure liquid floated damping combined bearing of flywheel battery - Google Patents
Magnetic suspension and passive dynamic pressure liquid floated damping combined bearing of flywheel battery Download PDFInfo
- Publication number
- CN203532525U CN203532525U CN201320404078.0U CN201320404078U CN203532525U CN 203532525 U CN203532525 U CN 203532525U CN 201320404078 U CN201320404078 U CN 201320404078U CN 203532525 U CN203532525 U CN 203532525U
- Authority
- CN
- China
- Prior art keywords
- permanent
- bearing
- magnetic
- flywheel
- dynamic pressure
- 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.)
- Expired - Fee Related
Links
Images
Abstract
The utility model relates to a magnetic suspension and passive dynamic pressure liquid floated damping combined bearing of a flywheel battery. The combined bearing consists of a permanent magnetic suspension bearing (1) and a passive dynamic pressure liquid floated damping bearing (3), wherein the permanent magnetic suspension bearing (1) is used for unloading the weight load of a flywheel; the passive dynamic pressure liquid floated damping bearing (3) is used for stabilizing the permanent magnetic suspension bearing; the permanent magnetic suspension bearing (1) is formed by two permanent magnetic bearing components which are arranged on the upper end of a flywheel main shaft (2) and on a fixed frame (5) respectively; the passive dynamic pressure liquid floated damping bearing (3) is a suspension bearing in a liquid membrane suspension state and is arranged at the lowermost end of the flywheel main shaft (2). The combined bearing is applied to a flywheel energy storage device.
Description
Technical field
The utility model relates to the bearing of a kind of flying wheel battery permanent magnetism magnetic suspension and the floating damping of passive dynamic pressure liquid.
Background technique
The starting point that research and utilization flywheel energy carries out storage of electrical energy is the problems such as low, the unstable and befouling environment such as efficiency that solve that current various chemical accumulate batteries bring.Energy accumulation device for fly wheel is a kind of acceleration of High Rotation Speed flywheel and physical battery that electric flux storage and release are carried out in deceleration of utilizing.There is not chemical reaction in it, the waste gas and wastes that can avoid chemical cell to produce.Particularly at present wind-powered electricity generation and solar electrical energy generation, nonuniformity, intermittence and power quality problem due to its generating, not only needing has powerful electric energy buffer memory device, and institute's electricity need to be carried out to the adjustment of quality, makes it to meet the requirement of operation of power networks.Energy accumulation device for fly wheel can be realized modularization work, adapts to the requirement of store power and adjustment power quality according to the different system of different demand integrations.Energy accumulation device for fly wheel also can be applicable to the use of the energy recovery operation of the traffic tool such as city underground and the concentrated macro-energy release of military field.
Flywheel energy storage technology has developed for many years, and multiple flywheel technology has seen among many patents.Hts magnetic levitation bearing can be realized contactless stable full state of suspension, but the suspension bearing of this energy accumulation device for fly wheel must remain in the environment of liquid nitrogen, and operation and maintenance cost increases greatly; And full suspension of the magnetic suspension bearing of only making with permanent magnet realization is unsettled, general permanent magnetism magnetic suspension bearing mainly plays unloading effect to flywheel weight, needs adjusting or supporting.The stability of a system of utilizing magnetic field to repel each other in the technology of permanent magnetism magnetic suspension bearing is bad, although utilize structure good stability that permanent-magnet inhales mutually in the structure of repelling each other, but because the nonuniformity of magnet can produce huge eddy current when the high speed operation relatively, thereby make it the efficiency that heating reduces system.
With regard to flying wheel battery permanent magnetism magnetic suspension and the floating damping bearing of passive dynamic pressure liquid, it is axial contactless bearing that the patent of invention of CN 102082482A proposes a kind of magnetic field of permanent magnet, its shortcoming is that stressed member is permanent magnet, and the mechanical mechanics property of the magnetic material made from powder metallurgical technique is good not, easily cracked.With the fixing gap that can increase of dividing plate, reduce magnetic field, and the magnetic intensity of this structure is limited, the relieving capacity of per unit volume is less.
It is axial contactless bearing that CN 102437675 A patent of invention propose a kind of taper magnetic field, and its stable operation regulates by electromagnetic field, and energy loss is large and utilize electrical adjustment to have risk less reliable.
Summary of the invention
The purpose of this utility model is to overcome existing permanent magnetism magnetic suspension bearing to have Magnetic field inhomogeneity, easily produce eddy current, unload the shortcoming that little energy loss is large and unstable and easy generation is resonated, and proposes the combination bearing of the floating damping bearing of a kind of new flying wheel battery permanent magnetism magnetic suspension bearing and passive dynamic pressure liquid.
The utility model comprises two-part: the one, and permanent magnetism magnetic suspension bearing, its Main Function is the unloading for flywheel weight load; The 2nd, passive dynamic pressure liquid floats damping bearing.Because any permanent magnetism magnetic suspension completely without source is all unsettled, so the utility model is at the floating damping bearing of the passive dynamic pressure liquid of being provided with bottom of flywheel head shaft, played the effect of stable permanent magnetism magnetic suspension bearing, and it has damping characteristic, prevent that flywheel from resonating when High Rotation Speed.
The technical solution adopted in the utility model is as follows:
Described permanent magnetism magnetic suspension bearing is by being arranged on respectively flywheel head shaft upper end and two Permanent-magnet bearing module compositions above fixed frame, what be arranged on flywheel head shaft upper end is the Permanent-magnet bearing assembly of rotation, be arranged on above fixed frame is fixing Permanent-magnet bearing assembly, Permanent-magnet bearing assembly and the fixing Permanent-magnet bearing components of rotation are coaxially arranged on the axis of flywheel head shaft, upper and lower corresponding and attract each other.Each Permanent-magnet bearing assembly forms by a plurality of soft magnetic metal annular solids and a plurality of permanent-magnetic clamp body, and a plurality of soft magnetic metal annular solids are different with the diameter dimension of a plurality of permanent-magnetic clamp bodies, and both height are equal, and thickness can not equate or not etc.Described height refers to soft magnetic metal annular solid and the size of permanent-magnetic clamp body on axial direction, and thickness refers to the poor of soft magnetic metal annular solid and a plurality of permanent magnetic ring-shaped body diameter and internal diameter.A plurality of soft magnetic metal annular solids form the pole parts of upper and lower two Permanent-magnet bearing assembly magnetic circuits, and each soft magnetic metal annular solid is fixed on the disk that a diameter is greater than maximum soft magnetic metal annular solid external diameter; A plurality of permanent-magnetic clamp bodies are that diameter dimension does not wait, the radial radiation ring of contour uniform thickness, or be diameter not etc., the radial radiation ring of contour not uniform thickness, or be combined into radial radiation ring with a watt body.A plurality of permanent-magnetic clamp bodies are embedded in the annulus forming between described soft magnetic metal annular solid and disk.The magnetic direction of permanent-magnetic clamp body is radially, and, for same soft magnetic metal annular solid, the permanent magnet magnetic field direction of both sides is identical; On the ring surface of the soft magnetism annular solid in Permanent-magnet bearing, form a ring like this " N " one ring " S " field structure.For the magnetic pole of some soft magnetism annular solids, be by the magnetic line of force of permanent magnet from both sides " extruding " to the magnetic pole of soft magnetic metal annular solid, make the magnetic pole of soft magnetic metal annular solid form axial magnetic field on whole circumference.The weight load of flywheel is unloaded by two the soft magnetic metal annular solids that attract each other of Permanent-magnet bearing assembly that are contained in fixing Permanent-magnet bearing assembly above fixed frame and are contained in the rotation of upper flywheel head shaft upper end.Stressed member is the good soft magnetic metal annular solid of intensity rather than permanent-magnetic clamp body.
The utility model Permanent-magnet bearing has alleviated the pressure of flywheel to hydrodynamic kelmet simultaneously.Utilize soft magnetic metal annular solid can make the non-uniform magnetic field that inhomogeneous permanent-magnetic clamp body produces pass through soft magnetism magnetic pole homogenization as the structure of magnetic pole; reduce flywheel issuable eddy current loss and heating when High Rotation Speed, the rare-earth permanent magnet permanent magnet of also having protected powder metallurgy process to produce is damaged when High Rotation Speed.Adopt soft magnetic material as magnetic pole, be easy to highi degree of accuracy processing, make the accurate magnetic suspension bearing of permanent magnetism concentricity on circular movement better.
Although the Permanent-magnet bearing that the utility model adopts is the mode of inhaling mutually, than the employing mode of repelling each other, stablizes manyly, but still need to have in the axial direction a power that balances each other with unload forces gravity and can play stabilization.So the utility model has installed the floating damping bearing of a passive dynamic pressure liquid additional bottom at flywheel head shaft.Described damping bearing is a kind of suspension bearing of liquid film state of suspension, is arranged on flywheel head shaft bottom.Described damping bearing comprises a little ball of being made by high hardness wear-resisting material.Described damping bearing also comprises hemisphere concave body, and described hemisphere concave body is arranged on below corresponding to flywheel head shaft, fixed frame bottom, by high hardness wear-resisting material, is made.The diameter of described hemisphere concave volume is greater than the diameter of described little ball.Described roundlet ball embeds in described hemisphere concave body, in hemisphere concave volume, has grease, between little ball and hemisphere concave volume, forms oil film.Oil film has in certain viscosity, has the effect of the resonance of preventing.Described damping bearing holds up flywheel head shaft, forms the liquid bearing of High Rotation Speed.Because described the small ball's diameter is less, even the minimum loss of linear velocity slight drag is also little when High Rotation Speed.
The combination bearing of the floating damping of permanent magnetism magnetic suspension of the present utility model and passive dynamic pressure liquid is applied in energy accumulation device for fly wheel.Flywheel head shaft rotates perpendicular to ground, belongs to vertical structure.Wherein be arranged on flywheel head shaft upper end rotation Permanent-magnet bearing assembly and be arranged between Permanent-magnet bearing assembly fixing above fixed frame and leave certain gap.
Accompanying drawing explanation
Fig. 1 structural representation of the present utility model;
Fig. 2 the utility model embodiment permanent magnetism magnetic suspension bearing component construction sectional drawing;
The passive dynamic pressure liquid of Fig. 3 floats damping bearing structural representation;
In figure: 1 permanent magnetism magnetic suspension bearing, 2 flywheel head shafts, 3 passive dynamic pressure liquid float damping bearing, 4 housings, 5 fixed frames, 6 dynamoelectric machines, 7 flywheels, 101 disks, 102 permanent-magnetic clamp bodies, 103 soft magnetic metal annular solids, 201 little balls, 202 hemisphere concave body.
Embodiment
As shown in Figure 1, the utility model is the combination bearing of a kind of flying wheel battery magnetic suspension and the floating damping of passive dynamic pressure liquid, and it comprises two-part: permanent magnetism magnetic suspension bearing 1 and passive dynamic pressure liquid float damping bearing 3.
Described permanent magnetism magnetic suspension bearing 1 is by the upper end and fixed frame 5 two the Permanent-magnet bearing module compositions above that are arranged on respectively flywheel head shaft 2.The floating damping bearing 3 of described passive dynamic pressure liquid is installed on flywheel head shaft bottom.
What be arranged on flywheel head shaft 2 upper ends is the part of the Permanent-magnet bearing assembly of rotation, be arranged on fixed frame 5 above be fixing Permanent-magnet bearing assembly, the Permanent-magnet bearing assembly of rotation and fixing Permanent-magnet bearing assembly are upper and lower corresponding and attract each other on the axis of flywheel head shaft.Each Permanent-magnet bearing assembly forms by a plurality of soft magnetic metal annular solids 103 and permanent-magnetic clamp body 102, and a plurality of soft magnetic metal annular solids are different with the diameter dimension of permanent-magnetic clamp body, highly equal, and thickness can not equate or not etc.A plurality of soft magnetic metal annular solids 103 form the pole parts of upper and lower two Permanent-magnet bearing assembly magnetic circuits, and the upper and lower end of a plurality of soft magnetism annular solids is fixed in the disk 101 that a diameter is greater than maximum soft magnetic metal annular solid external diameter; A plurality of permanent-magnetic clamp bodies are that diameter dimension is different, contour radial radiation ring, can not the equating or not etc. of the thickness of radial radiation ring, a plurality of permanent-magnetic clamp bodies or for to be combined into radial radiation ring with a watt body; Between a plurality of soft magnetism annular solids 103, leave gap; In the gap that permanent-magnetic clamp body 102 embeds between a plurality of soft magnetism annular solids 103, in the annulus forming between described soft magnetism annular solid 103 and disk 101; Soft magnetic metal annular solid 103 and permanent-magnetic clamp body 102 are spaced and are arranged on disk 101 inside.
The magnetic direction of permanent-magnetic clamp body is radially, and, for same soft magnetism annular solid, the permanent magnet magnetic field direction of both sides is identical; On the ring surface of the soft magnetism annular solid in Permanent-magnet bearing, form a ring like this " N " one ring " S " field structure.For the magnetic pole of some soft magnetism annular solids, be by the magnetic line of force of permanent magnet from both sides " extruding " to the magnetic pole of soft magnetic metal annular solid, make the magnetic pole of soft magnetic metal annular solid form axial magnetic field on whole circumference.The weight load of flywheel is unloaded by two the soft magnetic metal annular solids that attract each other of Permanent-magnet bearing assembly that are contained in fixing Permanent-magnet bearing assembly above of fixed frame 5 and are contained in the rotation of upper flywheel head shaft 2 upper ends.Stressed member is the good soft magnetic metal annular solid 103 of intensity rather than permanent-magnetic clamp body 102.
Figure 2 shows that an embodiment of the present utility model.As shown in Figure 2, a permanent magnetism magnetic suspension bearing unit has been used four soft magnetic metal annular solids 103, and soft magnetic metal annular solid 103 is made by soft magnetic material electrical pure iron, the donut that the wall thickness not waiting for diameter is 5mm.The two ends up and down of four soft magnetic metal annular solids 103 are fixed on disk 101; Between four soft magnetic metal annular solids 103, there is certain intervals, form three annular spaces, concentric permanent-magnetic clamp body 102 is arranged in three described annular spaces, and soft magnetic metal annular solid 103 and permanent-magnetic clamp body 102 are spaced and are arranged on disk 101 inside.The tile-shaped magnet that permanent-magnetic clamp body 102 use permanent-magnet material NdFeB make is spliced, and the magnetic direction of permanent-magnetic clamp body 102 is for radially.The utility model utilizes in the relative method of N-N, S-S in the radial direction, on soft magnetic metal annular solid, forms axial magnetic field, is evenly distributed on soft magnetic metal annular solid.Two identical permanent magnetism magnetic suspension bearing uniies of structure are arranged on respectively between fixed support 5 and flywheel head shaft 2 these two permanent magnetism magnetic suspension bearing uniies and leave gap, in non-contacting magnetic suspension state.
Permanent magnetism magnetic suspension bearing in the utility model is mainly that flywheel weight is played to unloading effect.For strengthening the full stability suspending of magnetic suspension bearing, make the stable operation of flywheel, the utility model installing bottom of flywheel head shaft a suspension bearing that adopts dynamic pressure liquid film suspension technique to make.This suspension bearing is comprised of a roundlet ball 201 and a hemisphere concave body 202.Roundlet ball 201 is made by the pottery of high hardness wear-resisting, is arranged on flywheel head shaft 2 bottom.Fixed frame 5 bottoms corresponding with flywheel head shaft 2 below a hemisphere concave body 202 of being made by high hardness wear-resisting alloy is installed, the diameter of hemisphere concave body 202 is greater than the diameter of roundlet ball 201.In hemisphere concave body 202, be filled with liquid fat.Flywheel forms liquid film when High Rotation Speed between roundlet ball 201 and hemisphere concave body 202, and flywheel head shaft and flywheel are suspended.Less owing to being located at the roundlet bulb diameter of flywheel head shaft 2 lower ends again, even the minimum loss of linear velocity slight drag is also little when High Rotation Speed.
In the non-contact suspension state of the upper end of the flywheel of High Rotation Speed and flywheel head shaft 2 in permanent magnetism magnetic suspension bearing; And the lower end of flywheel head shaft 2 is suspended in above liquid film.Regulate the gap between two assemblies of permanent magnetism magnetic suspension bearing, the weight of flywheel is mainly unloaded by permanent magnetism magnetic suspension bearing, be added on dynamic pressure liquid film suspension bearing very little a part of power to keep the stable operation of flywheel.The permanent magnetism magnetic suspension bearing of flywheel top and the dynamic pressure liquid bearing that does not need power supply below flywheel head shaft, form the floating damping combination bearing of a stable efficient a kind of flying wheel battery magnetic suspension and passive dynamic pressure liquid jointly.
Claims (5)
1. a combination bearing for the floating damping of flying wheel battery magnetic suspension and passive dynamic pressure liquid, is characterized in that, described combination bearing consists of permanent magnetism magnetic suspension bearing (1) and the floating damping bearing (3) of passive dynamic pressure liquid; Described permanent magnetism magnetic suspension bearing (1) unloads flywheel weight load; The floating damping bearing (3) of described passive dynamic pressure liquid is stablized permanent magnetism magnetic suspension bearing; Described permanent magnetism magnetic suspension bearing (1) is by the upper end and fixed frame (5) two the Permanent-magnet bearing module compositions above that are arranged on respectively flywheel head shaft (2); The floating damping bearing (3) of described passive dynamic pressure liquid is the suspension bearing of liquid film state of suspension, is installed on flywheel head shaft (2) bottom.
2. according to combination bearing claimed in claim 1, it is characterized in that, what be arranged on described flywheel head shaft (2) upper end is the Permanent-magnet bearing assembly of rotation, be arranged on fixed frame (5) above be fixing Permanent-magnet bearing assembly; Permanent-magnet bearing assembly and the fixing Permanent-magnet bearing assembly of rotation are coaxially arranged on the axis of flywheel head shaft, upper and lower corresponding and attract each other; Between the Permanent-magnet bearing assembly of described rotation and described fixing Permanent-magnet bearing assembly, leave certain gap.
3. according to the combination bearing described in claim 1 or 2, it is characterized in that, described Permanent-magnet bearing assembly forms by a plurality of soft magnetic metal annular solids (103) and permanent-magnetic clamp body (102); A plurality of soft magnetic metal annular solids (103) form the pole parts of upper and lower two Permanent-magnet bearing assembly magnetic circuits; The upper and lower end of a plurality of soft magnetism annular solids (103) is fixed in the disk (101) that a diameter is greater than maximum soft magnetic metal annular solid external diameter, between a plurality of soft magnetism annular solids (103), leaves gap; Permanent-magnetic clamp body (102) embeds in the gap between a plurality of soft magnetism annular solids (103), and soft magnetic metal annular solid (103) and permanent-magnetic clamp body (102) are spaced and are arranged on disk 101 inside;
Described a plurality of soft magnetic metal annular solids are different with the diameter dimension of a plurality of permanent-magnetic clamp bodies, highly equal; Described a plurality of permanent-magnetic clamp bodies are that diameter dimension is different, highly equal radial radiation ring, or be combined into radial radiation ring with a watt body, and the magnetic direction of permanent-magnetic clamp body is for radially.
4. according to combination bearing claimed in claim 1, it is characterized in that, the floating damping bearing (3) of described passive dynamic pressure liquid is comprised of a little ball (201) and a hemisphere concave body (202); Little ball (201) is arranged on flywheel head shaft (2) bottom; A hemisphere concave body (202) is installed in the below corresponding with flywheel head shaft (2) in fixed frame (5) bottom, and the diameter of described hemisphere concave body (202) is greater than the diameter of little ball (201); In hemisphere concave body (202), be filled with liquid fat; Flywheel forms liquid film when High Rotation Speed between little ball (201) and hemisphere concave body (202), and flywheel head shaft (2) and flywheel are suspended.
5. according to combination bearing claimed in claim 4, it is characterized in that, described little ball (201) is made by pottery; Described hemisphere concave body (202) is made by alloy.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320404078.0U CN203532525U (en) | 2013-07-08 | 2013-07-08 | Magnetic suspension and passive dynamic pressure liquid floated damping combined bearing of flywheel battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320404078.0U CN203532525U (en) | 2013-07-08 | 2013-07-08 | Magnetic suspension and passive dynamic pressure liquid floated damping combined bearing of flywheel battery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203532525U true CN203532525U (en) | 2014-04-09 |
Family
ID=50418736
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320404078.0U Expired - Fee Related CN203532525U (en) | 2013-07-08 | 2013-07-08 | Magnetic suspension and passive dynamic pressure liquid floated damping combined bearing of flywheel battery |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203532525U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103335021A (en) * | 2013-07-08 | 2013-10-02 | 北京飞轮储能柔性研究所 | Combination bearing of flywheel battery magnetic suspension and passive dynamic pressure liquid floated damping |
-
2013
- 2013-07-08 CN CN201320404078.0U patent/CN203532525U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103335021A (en) * | 2013-07-08 | 2013-10-02 | 北京飞轮储能柔性研究所 | Combination bearing of flywheel battery magnetic suspension and passive dynamic pressure liquid floated damping |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US6710489B1 (en) | Axially free flywheel system | |
| US6873235B2 (en) | Shear force levitator and levitated ring energy storage device | |
| EP2580489B1 (en) | Flywheel energy system | |
| US7876010B2 (en) | Passive magnetic bearing configurations | |
| EP3186872B1 (en) | High power flywheel system | |
| CN103335021A (en) | Combination bearing of flywheel battery magnetic suspension and passive dynamic pressure liquid floated damping | |
| CN202391966U (en) | Magnetic suspension bearings and magnetic suspension motor | |
| CN103929010A (en) | Vertical type hybrid magnetic suspension flywheel energy storage system | |
| US11451125B2 (en) | Centripetal magnet accelerator utilizing magnets to produce rotational motion for generating electricity | |
| CN102678745A (en) | Permanent magnetic bearing | |
| CN103216528A (en) | One-side hybrid axial magnetic bearing | |
| CN102537046A (en) | Magnetic levitation bearings and magnetic levitation motor | |
| WO2020160698A1 (en) | Magnetic kinetic energy inertial power generation device | |
| CN103925291A (en) | Permanent magnet polarization hybrid axial magnetic bearing | |
| CN103368326A (en) | Low-power-consumption magnetic suspension flywheel energy storing device | |
| CN102122872A (en) | Wind driven generator with axial magnetic levitation bearing | |
| CN203532525U (en) | Magnetic suspension and passive dynamic pressure liquid floated damping combined bearing of flywheel battery | |
| CN101709746A (en) | Five-freedom-degree permanent-magnet suspension bearing rotor system | |
| EP3091241A1 (en) | Axial permanent magnetic suspension bearing having micro-friction or no friction of pivot point | |
| Wu et al. | Study on magnetic levitation wind turbine for vertical type and low wind speed | |
| CN208971318U (en) | The flywheel energy storage system of ladder variable cross-section rotor mixing bearing | |
| CN208904827U (en) | The flywheel energy storage system of curved surface variable cross-section rotor mixing bearing | |
| KR100445224B1 (en) | A Superconductor Flywheel Energy Storage System using a Hybrid Bearings | |
| CN100547900C (en) | Magnetic suspending wind turbine generator | |
| CN203481988U (en) | Magnetic suspension flywheel motor |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140409 Termination date: 20180708 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |