CN1719692A - Flywheel energy storing system - Google Patents
Flywheel energy storing system Download PDFInfo
- Publication number
- CN1719692A CN1719692A CNA2005100279256A CN200510027925A CN1719692A CN 1719692 A CN1719692 A CN 1719692A CN A2005100279256 A CNA2005100279256 A CN A2005100279256A CN 200510027925 A CN200510027925 A CN 200510027925A CN 1719692 A CN1719692 A CN 1719692A
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- China
- Prior art keywords
- flywheel
- magnetic
- high vacuum
- seal housing
- vacuum seal
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- 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.)
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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
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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
- F16C39/00—Relieving load on bearings
- F16C39/06—Relieving load on bearings using magnetic means
- F16C39/063—Permanent magnets
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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
This invention relates to a flywheel energy-storage system characterizing in manufacturing sealed cases in high vacuum with materials of small specific gravity and designing a safety protection ring for preventing crushes of the flywheel from overflowing on the case wall of the centrifugal direction when rotating. Magnetic suspension bearing or a magnetic mechanical mixed bearing are used here, the magnet part on the flywheel is composed of compound fiber, resin and rare earth magnet powder, besides, a device for ensuring the safely swinging of the flywheel is also disclosed in the system.
Description
(1) technical field
The present invention relates to flywheel energy storage system.
(2) background technology
In the present prior art, have a kind ofly to store the flywheel energy storage system that flywheel mechanical energy replaces store electrical energy, it comprises: high vacuum seal housing, bearing, flywheel and be used to drive flywheel or flywheel mechanical energy is converted to the electromechanical energy conversion device of electric energy to external world's output.System described in China Patent No. 01126564.7 or U.S. Patent number US-5214981 and the US-5124605 specification for example.
In above-mentioned prior art: the high vacuum seal housing adopts the steel manufacturing, and the proportion of steel is big and intensity is limited, not only reduced the gravimetric specific energy (annotating :) of system because the weight of described box hat accounts for more than 60% of system's total weight usually, can't stop the risk (notes: that the broken beyond the region of objective existence ease of flywheel causes injury accident because the limit speed of flywheel energy storage system flywheel is high, for example the limit speed of system's flywheel is 200000rpm described in U.S. Patent number US-5214981 and the US-5124605 specification, and the kinetic energy of the broken thing of flywheel this moment will be above tens times of common iron intensity).Bearing is only limited to and adopts expensive magnetic bearing, and, it is located at the magnetic force that is used for the floating permanent magnetic part of flywheel axial magnetic on the flywheel and is not fully utilized (annotate: described permanent magnetic part has only a pole surface to be positioned at the flywheel axial end), thereby material cost is higher under quality and material property equivalent conditions.Permanent magnetic part on the flywheel adopts common rare-earth permanent magnet manufacturing, thereby does not have high-speed cruising reliability and safety in utilization (annotating: because common rare-earth permanent magnet tensile strength is lower and suffer that the broken thing in centrifugal force destruction back is the bigger lump of kinetic energy and splashes).In addition, in system, be not used in the device that guarantees flywheel swing safety, thereby its flywheel is cracked because of pendulum impact easily.Therefore, above-mentioned prior art exists safety in utilization and gravimetric specific energy to hang down and reaches the high shortcoming of manufacturing cost.
(3) summary of the invention
The purpose of this invention is to provide a kind of safety in utilization and gravimetric specific energy height and the flywheel energy storage system that reaches low cost of manufacture.
Technical scheme of the present invention is as follows:
A kind of flywheel energy storage system, it comprises high vacuum seal housing, bearing, flywheel ... ..; It is characterized in that:
Adopt the proportion materials with smaller to make the high vacuum seal housing, still, when it is positioned at the flywheel rotation, be provided with the security protection ring that is used to prevent the broken beyond the region of objective existence ease of flywheel on the shell wall of centrifugal direction.Described proportion materials with smaller is meant engineering plastics or light metal material, and when adopting engineering plastics to make the high vacuum seal housing, answers cloth to be useful on the metallic film of electromagnetic radiation shielding on the shell wall.Describedly be used to prevent that the security protection ring of the broken beyond the region of objective existence ease of flywheel from being twined, being formed with resin-bonding by monofilament carbon fiber or glass fibre.
Bearing adopts magnetic bearing or magnetic machine combined bearing.Described magnetic bearing is located at two pole surface of the permanent magnetic part that is used for the moving supporting of flywheel axial magnetic transportation by driving on the flywheel, lays respectively at flywheel shaft to two ends.Described magnetic machine combined bearing is made up of floating part of magnetic and mechanical part, and the floating part of its magnetic comprises the permanent magnetic part that is used for the moving supporting of flywheel axial magnetic transportation by driving, and its mechanical part comprises the mechanical part that is used for flywheel radial motion supporting.
Permanent magnetic part on the flywheel is composited by carbon fiber or glass fibre, resin and rare earth permanent-magnet powder.
In addition, this system also is provided with the device that is used to guarantee flywheel swing safety.This device comprises the flywheel amplitude of oscillation limiting part that is located on flywheel and the high vacuum seal housing respectively, adopts the high strength rigid material, it is the safe rigid collision that takes place by between flywheel amplitude of oscillation limiting part, other parts bump on the restriction flywheel amplitude of oscillation and replacement flywheel and the high vacuum seal housing, thereby realization guarantees flywheel swing safe task.
The present invention is compared with prior art progressive as follows:
One, significantly improved the safety in utilization of system, reason is: the fail safe the when device that is used to guarantee flywheel swing safety has effectively guaranteed the flywheel swing, permanent magnetic part on the flywheel is composited and tool high-speed cruising reliability and safety in utilization by carbon fiber or glass fibre, resin and rare earth permanent-magnet powder, in addition, owing to being provided with the security protection ring that is used to prevent the broken beyond the region of objective existence ease of flywheel, the high vacuum seal housing stopped the risk that flywheel broken beyond the region of objective existence ease causes injury accident.
Two, significantly improved the gravimetric specific energy of system, reason is: adopt the proportion materials with smaller to make the high vacuum seal housing, can significantly reduce described case weight proportion in system's total weight, and the gravimetric specific energy that is equivalent to system significantly improves.
Three, reduced the manufacturing cost of system, reason is: adopted the lower magnetic machine combined bearing of lower magnetic bearing of material cost or cost to reduce the bearing cost, and be equivalent to the manufacturing cost reduction of system.
The present invention is described in more detail below in conjunction with drawings and Examples.
(4) description of drawings
Accompanying drawing 1 is the structural representation of a kind of flywheel energy storage system of the present invention;
Accompanying drawing 2 is the structural representation of another flywheel energy storage system of the present invention.
(5) embodiment
In an embodiment of the present invention, the structure of flywheel energy storage system that a kind ofly comprise high vacuum seal housing, bearing, flywheel, is used to guarantee the device of flywheel swing safety and electromechanical energy conversion device is shown in accompanying drawing 1 or accompanying drawing 2:
Above-mentioned high vacuum seal housing 1 adopts the manufacturing of proportion materials with smaller, but, be provided with the security protection ring 1a that is used to prevent the broken beyond the region of objective existence ease of flywheel on the shell wall of centrifugal direction when it is positioned at the flywheel rotation (annotate: described direction is the direction that the broken thing of flywheel splashes).Described proportion materials with smaller is meant aluminum alloy materials (annotate: described aluminium alloy belongs to a kind of light metal material) in accompanying drawing 1 system, and is meant engineering plastics in accompanying drawing 2 systems; But, therefore, on the shell wall of accompanying drawing 2 systems high vacuum seal housing 1, be coated with the aluminium film 1b that is used for electromagnetic radiation shielding because engineering plastics can not electromagnetic radiation shielding.Described security protection ring 1a is twined, is formed with resin-bonding by the monofilament carbon fiber in accompanying drawing 1 system, and in accompanying drawing 2 systems, twine, be stained with to close with resin and form (annotate: it is less that described two kinds of composite materials all have proportion, but intensity can surpass the characteristics of tens times of common irons) by the monofilament glass fibre.
Above-mentioned bearing is a magnetic bearing in accompanying drawing 1 system, and is the magnetic machine combined bearing of cost far below magnetic bearing in accompanying drawing 2 systems.Described magnetic bearing is made up of permanent magnetic part 2a, the 2b, 3a and the 3b that are used for the moving supporting of flywheel magnetic transportation by driving, wherein, two pole surface that are located at the permanent magnetic part 2b that is used for the moving supporting of flywheel axial magnetic transportation by driving on the flywheel lay respectively at flywheel shaft to two ends, so that make full use of its magnetic force, thereby under quality and material property equivalent conditions, reduce material cost.Described magnetic machine combined bearing is made up of floating part of magnetic and mechanical part, and the floating part of its magnetic comprises permanent magnetic part 2b and the 3b that is used for the moving supporting of flywheel axial magnetic transportation by driving, and its mechanical part comprises mechanical part-bearing shell 3c and the 3d that is used for flywheel radial motion supporting.
Permanent magnetic part on the above-mentioned flywheel 2 in accompanying drawing 1 system, be useful on the permanent magnetic part 2a of the moving supporting of flywheel magnetic transportation by driving and 2b and and be used for the permanent magnetic part 2c and the 2d of electromechanical energy conversion device, these permanent magnetic parts all are the binding rare earth permanent magnets that is composited by carbon fiber, resin and Nd-Fe-B permanent magnetic powder; And in accompanying drawing 2 systems, permanent magnetic part on the flywheel only be useful on flywheel shaft to the permanent magnetic part 2b of the moving supporting of magnetic transportation by driving with and be used for the permanent magnetic part 2c and the 2d of electromechanical energy conversion device, these permanent magnetic parts all are by glass fibre, (annotate: described two kinds of binding rare earth permanent magnets have all acted on the characteristic of fibre resin composite material to the binding rare earth permanent magnet that resin and Nd-Fe-B permanent magnetic powder are composited, not only tensile strength is high, and, suffering also only can to produce " cotton candy " such cotton-shaped fine hair after centrifugal force destroys, its broken thing kinetic energy is minimum, do not have a destructive power, thereby, be used in tool high-speed cruising reliability and safety in utilization on the flywheel).
The above-mentioned device that is used to guarantee flywheel swing safety comprise be located at flywheel and high vacuum seal housing respectively, (annotate: described composite material is a kind of high strength rigid material) the flywheel amplitude of oscillation limiting part 2e and the 4a that make that adopt carbon fiber resin composite material.From accompanying drawing 1 as seen: maximum radial and end play between flywheel amplitude of oscillation limiting part 2e and 4a, respectively less than the maximum radial or the end play of other parts on flywheel and the high vacuum seal housing.And from accompanying drawing 2 as seen: the maximum axial gap between flywheel amplitude of oscillation limiting part 2e and 4a, maximum axial gap (annotate: described flywheel does not have the radially amplitude of oscillation because radial motion is a mechanical support so have only the axial amplitude of oscillation) less than other parts on flywheel and the high vacuum seal housing.Therefore, maximal clearance between flywheel amplitude of oscillation limiting part 2e and 4a is the threshold limit value of the flywheel amplitude of oscillation just, and, when flywheel and high vacuum seal housing upper-part generation rigid collision, just flywheel amplitude of oscillation limiting part 2e and 4a rather than other parts of rigid collision take place.In other words, the rigid collision that takes place between flywheel amplitude of oscillation limiting part 2e and 4a has limited the flywheel amplitude of oscillation and has replaced that other parts bump on flywheel and the high vacuum seal housing.In addition, be also shown in from attached Fig. 1 and 2: flywheel amplitude of oscillation limiting part 2e and 4a present position are all obviously near flywheel axis O-O ', when even rigid collision takes place with limit speed rotation (annotate: described limit speed is meant flywheel maximum speed during rotation under its stress structure can not be by the centrifugal force failure condition) between them in flywheel, because the particle angular speed of collision place is little, impact is little and flywheel amplitude of oscillation limiting part 2e and 4a are the parts that adopt high-strength material to make, impact when therefore, they can not collided is destroyed.In other words, the rigid collision that takes place between flywheel amplitude of oscillation limiting part 2e and 4a is very safe.In sum as can be known: this is used to guarantee that the device of flywheel swing safety is the safe rigid collision that takes place by between flywheel amplitude of oscillation limiting part 2e and 4a, other parts bump on the restriction flywheel amplitude of oscillation and replacement flywheel and the high vacuum seal housing, thereby realization guarantees flywheel swing safe task.
By the foregoing description, this professional those of ordinary skill should be able to be understood essence of the present invention and understand under the prerequisite of this essence, is not difficult the subtlety of embodiment is made various adjustment and variation.So the present invention is not limited to the foregoing description,, all belong to scope of the present invention as long as relate to the described feature of claim.
Claims (5)
1, a kind of flywheel energy storage system, it comprises: high vacuum seal housing, bearing, flywheel ... ..; It is characterized in that: adopt the proportion materials with smaller to make the high vacuum seal housing, still, when it is positioned at the flywheel rotation, be provided with the security protection ring that is used to prevent the broken beyond the region of objective existence ease of flywheel on the shell wall of centrifugal direction; Bearing adopts magnetic bearing or magnetic machine combined bearing; Permanent magnetic part on the flywheel is composited by carbon fiber or glass fibre, resin and rare earth permanent-magnet powder; In addition, this system also is provided with the device that is used to guarantee flywheel swing safety.
2, flywheel energy storage system according to claim 1, it is characterized in that: the proportion materials with smaller of making above-mentioned high vacuum seal housing is meant engineering plastics or light metal material, and when adopting engineering plastics to make the high vacuum seal housing, answer cloth to be useful on the metallic film of electromagnetic radiation shielding on the shell wall.
3, flywheel energy storage system according to claim 1 is characterized in that: above-mentioned high vacuum seal housing is used to prevent the security protection ring of the broken beyond the region of objective existence ease of flywheel, is twined, is formed with resin-bonding by monofilament carbon fiber or glass fibre.
4, flywheel energy storage system according to claim 1 is characterized in that: above-mentioned magnetic bearing is located at two pole surface of the permanent magnetic part that is used for the moving supporting of flywheel axial magnetic transportation by driving on the flywheel, lays respectively at flywheel shaft to two ends; Above-mentioned magnetic machine combined bearing is made up of floating part of magnetic and mechanical part, and the floating part of its magnetic comprises the permanent magnetic part that is used for the moving supporting of flywheel axial magnetic transportation by driving, and its mechanical part comprises the mechanical part that is used for flywheel radial motion supporting.
5, flywheel energy storage system according to claim 1, it is characterized in that: above-mentionedly be used to guarantee that the device of flywheel swing safety comprises the flywheel amplitude of oscillation limiting part that is located at flywheel and high vacuum seal housing respectively, adopts the high strength rigid material, this device is the safe rigid collision that takes place by between flywheel amplitude of oscillation limiting part, other parts bump on the restriction flywheel amplitude of oscillation and replacement flywheel and the high vacuum seal housing, thereby realization guarantees flywheel swing safe task.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2005100279256A CN1719692A (en) | 2005-07-21 | 2005-07-21 | Flywheel energy storing system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2005100279256A CN1719692A (en) | 2005-07-21 | 2005-07-21 | Flywheel energy storing system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1719692A true CN1719692A (en) | 2006-01-11 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2005100279256A Pending CN1719692A (en) | 2005-07-21 | 2005-07-21 | Flywheel energy storing system |
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| CN (1) | CN1719692A (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101127465B (en) * | 2007-07-26 | 2010-12-01 | 严密 | Energy storage system for magnetic floating flywheel |
| CN102082483A (en) * | 2011-02-16 | 2011-06-01 | 东南大学 | Flywheel energy storing device with permanent magnet bearing and thrust bearing |
| CN107210645A (en) * | 2014-12-02 | 2017-09-26 | 管理服务集团股份有限公司贸易用名全球技术系统 | For increasing the energy in composite flywheel energy-storage system and/or the apparatus and method of power density |
| CN103368325B (en) * | 2012-04-03 | 2018-09-07 | 波音公司 | Flexible magnet orients reinforcement method |
| WO2019102058A1 (en) * | 2017-11-21 | 2019-05-31 | Teraloop Oy | Apparatus and method for the electrical insulation of flywheel energy storage devices |
| CN110176823A (en) * | 2019-05-20 | 2019-08-27 | 清华大学 | Protective device and flywheel energy storage unit of the high speed flywheel under fault case |
| CN110630865A (en) * | 2019-09-12 | 2019-12-31 | 上海出版印刷高等专科学校 | Camera fixing device with anti-shake function |
| US10715007B2 (en) | 2014-12-02 | 2020-07-14 | Management Services Group, Inc. | Devices and methods for increasing energy and/or power density in composite flywheel energy storage systems |
-
2005
- 2005-07-21 CN CNA2005100279256A patent/CN1719692A/en active Pending
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101127465B (en) * | 2007-07-26 | 2010-12-01 | 严密 | Energy storage system for magnetic floating flywheel |
| CN102082483A (en) * | 2011-02-16 | 2011-06-01 | 东南大学 | Flywheel energy storing device with permanent magnet bearing and thrust bearing |
| CN102082483B (en) * | 2011-02-16 | 2012-07-25 | 东南大学 | Flywheel energy storing device with permanent magnet bearing and thrust bearing |
| CN103368325B (en) * | 2012-04-03 | 2018-09-07 | 波音公司 | Flexible magnet orients reinforcement method |
| CN107210645A (en) * | 2014-12-02 | 2017-09-26 | 管理服务集团股份有限公司贸易用名全球技术系统 | For increasing the energy in composite flywheel energy-storage system and/or the apparatus and method of power density |
| CN107210645B (en) * | 2014-12-02 | 2020-04-14 | 管理服务集团股份有限公司贸易用名全球技术系统 | Equipment for composite material flywheel energy storage device |
| US10715007B2 (en) | 2014-12-02 | 2020-07-14 | Management Services Group, Inc. | Devices and methods for increasing energy and/or power density in composite flywheel energy storage systems |
| WO2019102058A1 (en) * | 2017-11-21 | 2019-05-31 | Teraloop Oy | Apparatus and method for the electrical insulation of flywheel energy storage devices |
| CN110176823A (en) * | 2019-05-20 | 2019-08-27 | 清华大学 | Protective device and flywheel energy storage unit of the high speed flywheel under fault case |
| CN110176823B (en) * | 2019-05-20 | 2020-10-30 | 清华大学 | Protection device for high-speed flywheel under fault state and flywheel energy storage unit |
| CN110630865A (en) * | 2019-09-12 | 2019-12-31 | 上海出版印刷高等专科学校 | Camera fixing device with anti-shake function |
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