CN101539168A - High-temperature superconducting magnetic suspension bearing used in flywheel gear - Google Patents
High-temperature superconducting magnetic suspension bearing used in flywheel gear Download PDFInfo
- Publication number
- CN101539168A CN101539168A CN200910076832A CN200910076832A CN101539168A CN 101539168 A CN101539168 A CN 101539168A CN 200910076832 A CN200910076832 A CN 200910076832A CN 200910076832 A CN200910076832 A CN 200910076832A CN 101539168 A CN101539168 A CN 101539168A
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- Prior art keywords
- rotor
- stator
- flywheel
- temperature superconducting
- high temperature
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C32/00—Bearings not otherwise provided for
- F16C32/04—Bearings not otherwise provided for using magnetic or electric supporting means
- F16C32/0406—Magnetic bearings
- F16C32/0408—Passive magnetic bearings
- F16C32/0436—Passive magnetic bearings with a conductor on one part movable with respect to a magnetic field, e.g. a body of copper on one part and a permanent magnet on the other part
- F16C32/0438—Passive magnetic bearings with a conductor on one part movable with respect to a magnetic field, e.g. a body of copper on one part and a permanent magnet on the other part with a superconducting body, e.g. a body made of high temperature superconducting material such as YBaCuO
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C2361/00—Apparatus or articles in engineering in general
- F16C2361/55—Flywheel systems
Abstract
The invention relates to a high-temperature superconducting magnetic suspension bearing used in flywheel gear, which comprises a flywheel shaft, an upward side rotor fixed on the flywheel shaft, an underneath rotor fixed on the flywheel shaft, a high-temperature superconducting stator sheathed on the flywheel shaft and fixedly positioned between the upward side rotor and the underneath rotor, and a refrigerant container which is held with a cooling agent used for cooling the high-temperature superconducting stator and is contacted with the high-temperature superconducting stator. The cooling agent is liquid nitrogen. The upward side rotor is positioned above the high-temperature superconducting stator; exclusive suspending power exists between the superconducting stator and the upward side rotor. The underneath rotor is positioned below the high-temperature superconducting stator; attracting suspending power exists between the superconducting stator and the underneath rotor; the high-temperature superconducting stator is made from YBCO high temperature conductors. Therefore, the bearing uses the upward side rotor and the underneath rotor, and the high-temperature superconducting stator is arranged between the upward side rotor and the underneath rotor; the stator and the two rotors have no contact, zero-friction and few energy consumption.
Description
Technical field
The present invention relates to a kind of hts magnetic levitation bearing, relate in particular to a kind of hts magnetic levitation bearing that is used for energy accumulation device for fly wheel.
Background technique
Energy problem is that development national economy at first needs the problem that solves, also is the problem that production and construction all departments pay special attention to, and has great strategy and economic implications.Particularly energy crisis aggravation in recent years, scientist predicts the year two thousand fifty, and tellurian petroleum resources will be exhausted.When seeking new energy, people are also exploring the energy conservation technology that is having now on the basis, i.e. the High-efficient Production of the energy, storage and use rationally.With regard to the energy stored, it was very outstanding to have seemed in a lot of fields, especially high-quality, high density and energy-storage system that can abrupt release, and a lot of fields press for.
The flywheel energy storage technology is a kind of emerging power storage technology, and it is the same with superconducting energy storage technology, fuel cell technology etc., all is the energy storage technology that has great prospects for development that occurs in recent years.Though the chemical cell energy storage technology has developed very ripely at present,, the chemical cell energy storage technology exists such as the restriction that discharges and recharges number of times, to the seriously polluted of environment and to problems such as operating temperature requirement height.Emerging energy storage technology more and more is subject to people's attention.Especially the flywheel energy storage technology has begun to be applied to more and more widely in many industries both domestic and external.
Existing energy accumulation device for fly wheel mainly comprises 3 cores: flywheel, motor and power electronic equipment.Its basic functional principle is, the electric energy of external world's input is converted into the kinetic energy that flywheel rotates by motor stores, and when the external world needs electric energy, by generator the kinetic energy of flywheel is converted into electric energy again, outputs to external loading.For can be for a long time stored energy efficiently, the loss when requiring energy accumulation device for fly wheel to turn round in the free time is very little.The rotation that conventional energy accumulation device for fly wheel adopts mechanical bearing to come support flying wheel, but because the friction factor of mechanical bearing generally about 0.001, under long running time, can cause very big energy loss.
The model utility content
The objective of the invention is the defective at prior art, a kind of hts magnetic levitation bearing is provided, can make the friction factor of bearing minimum, energy loss reduces, and has improved the efficient of energy storage.
For achieving the above object, the invention provides a kind of hts magnetic levitation bearing, comprising:
Flywheel shaft;
The top rotor is made by permanent magnet, is fixed on the described flywheel shaft;
The below rotor is made by permanent magnet, is fixed on the described flywheel shaft;
The high temperature superconductor stator is enclosed within on the described flywheel shaft, and fixing above described rotor and below between the rotor.
Also comprise coolant container, be equipped with the cooling medium that is used to cool off described high temperature superconductor stator, contact with described high temperature superconductor stator.Described cooling medium is a liquid nitrogen.
Described top rotor is positioned on the high temperature superconductor stator, and described superconductor stator and top rotor are for repelling suspending power.Described below rotor is positioned under the high temperature superconductor stator, and described superconductor stator and below rotor are for attracting suspension force.Described high temperature superconductor stator is the YBCO high temperature superconductor.Described top rotor and below rotor are permanent magnet.
Therefore, the present invention is according to the principle of high-temperature superconducting magnetic levitation, be applicable to the structure of energy accumulation device for fly wheel, used last lower rotor part, and the high temperature superconductor stator is set between two rotors, non-contact does not have friction between stator and two rotors, and energy loss is little, can satisfy the needs of the efficient stored energy of energy accumulation device for fly wheel fully.
Description of drawings
Fig. 1 is used for the structural representation of the hts magnetic levitation bearing of flywheel gear for the present invention.
Fig. 2 is used for the stereogram figure of the hts magnetic levitation bearing of flywheel gear for the present invention.
Embodiment
Below by drawings and Examples, technological scheme of the present invention is described in further detail.
Hts magnetic levitation bearing is a kind of bearing arrangement passive, at a high speed, that do not have the machinery friction, its friction factor has only about 1/10000 of conventional machinery bearing, maximum speed can reach 520000r/min, so this class bearing is suitable as the supporting part of flywheel rotor in the energy storage device most.
As depicted in figs. 1 and 2, be used for the structural representation of hts magnetic levitation bearing of flywheel gear and the stereogram of the hts magnetic levitation bearing that the present invention is used for flywheel gear for the present invention, comprise flywheel shaft 1; Top rotor 2 is fixed on the flywheel shaft 1; Below rotor 3 is fixed on the flywheel shaft 1; High temperature superconductor stator 4 is enclosed within on the flywheel shaft 1, and above rotor 2 and below between the rotor 3.Be fixed on immovable framework.
High temperature superconductor stator 4 is positioned at rotor 2 bottoms, top, is the repulsion suspending power between superconductor stator 4 and the top rotor 2; High temperature superconductor stator 4 is positioned at rotor 3 tops, below, is the attraction suspension force between superconductor stator 4 and the below rotor 3.Top rotor 2 and below rotor 3 are permanent magnet material.
Again as shown in Figure 1, also comprise coolant container 5, be equipped with the cooling medium that is used for cooling high-temperature superconducting body stator, contact with high temperature superconductor stator 4.Be full of liquid nitrogen in the coolant container 5, link to each other, be used to keep the required low temperature environment of superconductor stator 4 proper functioning with external refrigerator.High temperature superconductor stator 4 can be the YBCO high temperature superconductor.
In the cold magnetic history on the scene, suitably increase the spacing of top rotor 2 and superconductor stator 4 in advance, reduce the spacing of below rotor 3 and superconductor stator 4, make flywheel when proper functioning, superconductor stator 4 is positioned at the neutral position of lower rotor part 2 and 3, all provides maximum suspending power to guarantee superconductor stator 4 pairs of tops rotor 2 and below rotor 3.
For the ease of the layout of cooling unit 5, generally by high temperature superconductor as bearing stator, permanent magnet is as bearing rotor, according to the direction of both interaction forces, flywheel shaft can be divided into axially and radially two kinds.The suspension ratio of rigidity radial bearing of cod is bigger, and preparation process is simple, so the present invention adopts axial hts magnetic levitation bearing as prototype.The present invention adopts dual-rotor structure, and the superconductor stator is set between last lower rotor part.Adopt a cold mode of magnetization that last lower rotor part is set suitable hoverheight, make the top rotor be subjected to the repulsion suspending power of superconductor stator, the below rotor is subjected to the attraction suspension force of superconductor stator.Like this, last lower rotor part provides support power to flywheel simultaneously, is fit to make powerful energy accumulation device for fly wheel.
Therefore, the present invention is according to the principle of high-temperature superconducting magnetic levitation, be applicable to the structure of energy accumulation device for fly wheel, used last lower rotor part, and the high-temperature superconductive stator is set between two rotors, non-contact does not have friction between stator and two rotors, and energy loss is little, can satisfy the needs of the efficient stored energy of energy accumulation device for fly wheel fully.
It should be noted last that, above embodiment is only unrestricted in order to technological scheme of the present invention to be described, although the present invention is had been described in detail with reference to preferred embodiment, those of ordinary skill in the art is to be understood that, can make amendment or be equal to replacement technological scheme of the present invention, and not break away from the spirit and scope of technical solution of the present invention.
Claims (7)
1, a kind of hts magnetic levitation bearing that is used for flywheel gear is characterized in that comprising:
Flywheel shaft;
The top rotor is fixed on the described flywheel shaft;
The below rotor is fixed on the described flywheel shaft;
The high temperature superconductor stator is enclosed within on the described flywheel shaft, and fixing above described rotor and below between the rotor.
2, the hts magnetic levitation bearing that is used for flywheel gear according to claim 1 is characterized in that also comprising coolant container, is equipped with the cooling medium that is used to cool off described high temperature superconductor stator, contacts with described high temperature superconductor stator.
3, the hts magnetic levitation bearing that is used for flywheel gear according to claim 2 is characterized in that described cooling medium is a liquid nitrogen.
4, the hts magnetic levitation bearing that is used for flywheel gear according to claim 1 is characterized in that described top rotor is positioned on the high temperature superconductor stator, is the repulsion suspending power between described superconductor stator and the top rotor.
5, the hts magnetic levitation bearing that is used for flywheel gear according to claim 1 is characterized in that described below rotor is positioned under the high temperature superconductor stator, is the attraction suspension force between described superconductor stator and the below rotor.
6, the hts magnetic levitation bearing that is used for flywheel gear according to claim 1 is characterized in that described high temperature superconductor stator is the YBCO high temperature superconductor.
7,, it is characterized in that described top rotor and below rotor are permanent magnet according to the arbitrary described hts magnetic levitation bearing that is used for flywheel gear of claim 1-6.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910076832A CN101539168A (en) | 2009-01-22 | 2009-01-22 | High-temperature superconducting magnetic suspension bearing used in flywheel gear |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910076832A CN101539168A (en) | 2009-01-22 | 2009-01-22 | High-temperature superconducting magnetic suspension bearing used in flywheel gear |
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| Publication Number | Publication Date |
|---|---|
| CN101539168A true CN101539168A (en) | 2009-09-23 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200910076832A Pending CN101539168A (en) | 2009-01-22 | 2009-01-22 | High-temperature superconducting magnetic suspension bearing used in flywheel gear |
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| CN (1) | CN101539168A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102638201A (en) * | 2012-05-11 | 2012-08-15 | 李晓桓 | High pressure gas energy generator with multilayer magnetic suspension and inertia flywheel |
| CN102979815A (en) * | 2012-11-30 | 2013-03-20 | 中国科学院国家天文台南京天文光学技术研究所 | Horizontal astronomical telescope spindle magnetic levitation support shaft system structure suitable for moon |
-
2009
- 2009-01-22 CN CN200910076832A patent/CN101539168A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102638201A (en) * | 2012-05-11 | 2012-08-15 | 李晓桓 | High pressure gas energy generator with multilayer magnetic suspension and inertia flywheel |
| CN102979815A (en) * | 2012-11-30 | 2013-03-20 | 中国科学院国家天文台南京天文光学技术研究所 | Horizontal astronomical telescope spindle magnetic levitation support shaft system structure suitable for moon |
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Open date: 20090923 |