CN208971318U - The flywheel energy storage system of ladder variable cross-section rotor mixing bearing - Google Patents
The flywheel energy storage system of ladder variable cross-section rotor mixing bearing Download PDFInfo
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- CN208971318U CN208971318U CN201822048330.4U CN201822048330U CN208971318U CN 208971318 U CN208971318 U CN 208971318U CN 201822048330 U CN201822048330 U CN 201822048330U CN 208971318 U CN208971318 U CN 208971318U
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- flywheel
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- magnetic bearing
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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 flywheel energy storage system of ladder variable cross-section rotor mixing bearing, belongs to Flywheel energy storage technique field.The utility model solves the axial length of flywheel rotor existing for existing flywheel energy storage system, it influences rotor dynamic mechanical characteristic and will lead to the not good enough problem of flywheel energy storage system structural compactness, the utility model thrust magnetic bearing, upper auxiliary bearing, external rotor permanent magnet synchronous machine and lower auxiliary bearing are mounted on mandrel, and the top and bottom of flywheel rotary body and upper auxiliary bearing and lower auxiliary bearing are in clearance fit state；There are gaps between thrust magnetic bearing and the upper surface of flywheel rotary body；External rotor permanent magnet synchronous machine is placed in flywheel a rotating body, drives the rotation of flywheel rotary body；Upper radial magnetic bearing, lower radial magnetic bearing are fixedly mounted on shell, and radial magnetic bearing and flywheel rotary body outer wall are in contactless state, and flywheel main body is ladder variable section structure.The utility model rotor-support-foundation system is compact-sized, promotes rotor dynamics.
Description
Technical field
The utility model relates to a kind of flywheel energy storage systems, and in particular to a kind of ladder variable cross-section rotor mixing bearing flies
Energy-storage system is taken turns, Flywheel energy storage technique field is belonged to.
Background technique
Flywheel energy storage system as one can flexible modulation active source, be actively engaged in the dynamic behaviour of system, and can be
The of short duration state transient process of Eliminating disturbance retraction, makes system restore stable state rapidly.Flywheel energy storage system mainly by flywheel rotor,
The composition such as bearing, integrated electric/power generation mutual-inverse type either-rotation motor, electronic power converter.Integrated electric/power generation mutual-inverse type
Either-rotation motor realizes that electric energy and high speed flywheel mechanical energy are converted.Electric energy accelerates energy storage by electric power converter driving motor, flywheel；
Later, the constant operating of motor can control signal until receiving to release；Energy is released in the power generation of high speed flywheel dragging motor, and converted device output is suitable
In the electric current and voltage of load.
To store more energy, reduce system loss, flywheel rotor needs to have biggish rotary inertia, and in vacuum ring
High rotation speed operation is under border.As a kind of electromechanical integration energy storing devices for integrating the technologies such as machinery, control, electronics,
Flywheel energy storage system there is also many technical problems for restricting its engineering application, mainly finds expression in the choosing of suspension bearing system at present
Type, integrated electric/generator performance and control etc..If flywheel energy storage system takes installation inner rotor motor, and using more
A magnetic suspension bearing bearing, it will usually which the axial length for increasing flywheel rotor influences rotor dynamic mechanical characteristic and will lead to winged
It is not good enough to take turns energy-storage system structural compactness.
Utility model content
The brief overview about the utility model is given below, in order to provide certain sides about the utility model
The basic comprehension in face.It should be appreciated that this general introduction is not the exhaustive general introduction about the utility model.It is not intended to really
The key or pith of the utility model are determined, nor intended limitation the scope of the utility model.Its purpose is only with letter
The form of change provides certain concepts, taking this as a prelude to a more detailed description discussed later.
In consideration of it, the utility model is to solve the axial length of flywheel rotor existing for existing flywheel energy storage system,
It influences rotor dynamic mechanical characteristic and will lead to the not good enough problem of flywheel energy storage system structural compactness, and then devise a kind of rank
The flywheel energy storage system of terraced variable cross-section rotor mixing bearing, the system are mixed using external rotor permanent magnet synchronous machine with Permanent-magnet bearing
Bearing.
The scheme that the utility model is taken are as follows: the flywheel energy storage system of ladder variable cross-section rotor mixing bearing, including energy
Amount storage transform portion, rotor bearing part and slave part；
Wherein, energy storage transform portion includes flywheel rotary body and external rotor permanent magnet synchronous machine 6；Rotor bearing part
Including upper radial magnetic bearing, lower radial magnetic bearing, upper auxiliary bearing, lower auxiliary bearing and thrust magnetic bearing；Assisted parts
Divide includes shell and mandrel；
Wherein, the mandrel and flywheel rotary body are mounted in shell, and enclosure interior keeps vacuum state；Flywheel main body is
Ladder variable section structure, the ladder variable section structure are the ladder along flywheel horizontal centre reduced diameter up and down
Structure, vertical plane transition between ladder；The thrust magnetic bearing, upper auxiliary bearing, external rotor permanent magnet synchronous machine and lower auxiliary
Bearing is installed on mandrel, and is from top to bottom successively arranged along axial direction；Upper auxiliary bearing, lower auxiliary bearing, external rotor permanent magnet
The inner stator of synchronous motor is fixedly arranged on mandrel；The top and bottom of flywheel rotary body are auxiliary under by upper auxiliary bearing
It helps bearing and mandrel to establish connection, and is in clearance fit state with upper auxiliary bearing and lower auxiliary bearing；The permanent magnetism thrust axis
There are gaps above flywheel rotary body, and between the upper surface of flywheel rotary body for bearing；The external rotor permanent magnet synchronous machine
It is placed in flywheel a rotating body, and drives the rotation of flywheel rotary body；The fixed peace of the upper radial magnetic bearing, lower radial magnetic bearing
On shell, and upper radial magnetic bearing, lower radial magnetic bearing and flywheel rotary body outer wall are in contactless state.
Further: the flywheel rotary body includes flywheel, flywheel upper end cover and flywheel lower cover, the installation of flywheel upper and lower side
There are flywheel upper end cover and flywheel lower cover, flywheel upper end cover and upper auxiliary bearing clearance fit, flywheel lower cover and lower asessory shaft
Hold clearance fit.
Further: the flywheel rotary body is steel alloy flywheel rotary body.
Further: the gap between the upper radial magnetic bearing, lower radial magnetic bearing and flywheel rotary body outer wall
For 0.5~1mm.So set, flywheel rotary body is controlled by electromagnetic force, contacts with each other with bearing without radial, is in suspended state,
Mechanical friction abrasion is greatly reduced, radial support and active control are carried out to flywheel rotary body, can guarantee that bearing supports well
Stability.
Further: the gap between the top and bottom of the flywheel rotary body and upper auxiliary bearing and lower auxiliary bearing
For 0.1~0.5mm.So set, flywheel rotary body is controlled by electromagnetic force, contacts with each other with bearing without axial, be in suspension
State greatly reduces mechanical friction abrasion.
Further: being embedded in permanent magnet in the thrust magnetic bearing.So set, can be carried out to flywheel rotary body axial
Unloading.
Further: the gap between the thrust magnetic bearing and the upper surface of flywheel rotary body is 0.5~1mm.Such as
This setting, flywheel rotary body are controlled by magnetic force, are contacted with each other with thrust magnetic bearing without axial, are in suspended state, greatly subtract
Few mechanical friction abrasion, and thrust magnetic bearing is that flywheel rotor carries out axial unloading, and it is axially negative can greatly to mitigate electromagnetic bearing
It carries.
Further: the electric motor internal stator of the external rotor permanent magnet synchronous machine is wound around coil, and external rotor permanent magnet is synchronous
The motor outer rotor of motor is SmCo permanent magnet.
Further: the upper auxiliary bearing is axially positioned on mandrel by upper fixed hub, and lower auxiliary bearing passes through
Lower positioning sleeve is axially positioned on mandrel；Upper radial magnetic bearing is mounted on shell by the bearing of upper electromagnetic bearing external stator,
Lower radial magnetic bearing is mounted on shell by the bearing of lower electromagnetic bearing external stator.So set, magnet upper and lower end face is by solid
Dead axle set constraint fastening, and permanent magnetism external surface is by flywheel a rotating body surface protection.
Further: the upper radial magnetic bearing is identical as lower radial magnetic bearing structure, including stator coil and sets
Silicon steel sheet rotor inside stator coil, stator coil are the external stator of electromagnetic bearing, and silicon steel sheet rotor is in electromagnetic bearing
Rotor, there are gaps between stator coil and silicon steel sheet rotor.It is designed in this way, Active Magnetic Bearing facilitates compact-sizedization and sets
Meter.
Further: the upper auxiliary bearing and lower auxiliary bearing use rolling bearing.The outer ring axial face of rolling bearing
With outer radial surface respectively at flywheel upper end cover and flywheel lower cover there are gap, which is less than stator coil and silicon steel sheet turns
Gap between son.The inner ring of upper auxiliary bearing and lower auxiliary bearing is fixed, when rotor falls or needs repairing, asessory shaft
Bearing outer-ring bears rotor strike, and rotor is avoided to contact with electromagnetic bearing.
Further: the shell includes upper housing and lower case, and the two is connected by bolt, and enclosure interior keeps true
Dummy status, vacuum degree are at least 0.1Pa.Vacuum environment can effectively reduce windage when high speed rotor rotation, reduce rotor rotation
When friction, be effectively reduced mechanical loss, improve energy storage efficiency.
The utility model effect achieved are as follows:
The utility model selects external rotor permanent magnet synchronous machine as integrated electric/power generation mutual-inverse type either-rotation motor, can
Keep rotor-support-foundation system compact-sized, promotes rotor dynamics.Meanwhile flywheel plays certain protection also for permanent magnetic tile and makees
With.Forced water cooling mode may be selected in electric motor internal stator radiating mode.Using novel external rotor Active Magnetic Bearing to flywheel rotor
Radial support and active control are carried out, Permanent-magnet bearing is that flywheel rotor carries out axial unloading, it is ensured that the stability of bearing bearing,
Friction is reduced, vibration is reduced, and further compact systems spatial constructional dimensions, is conducive to system compact design.
Specifically: the flywheel energy storage system of the utility model utilizes upper radial magnetic bearing, lower radial magnetic bearing, upper auxiliary
Help bearing, lower auxiliary bearing and thrust magnetic bearing by the contactless suspension of flywheel rotary body, the axial displacement of flywheel rotary body, diameter
It is controlled to displacement and around the rotation of horizontal plane x-axis and y-axis by upper radial magnetic bearing and lower radial magnetic bearing, and flywheel
The axial-rotation of rotary body is controlled by external rotor permanent magnet synchronous machine.It is designed in this way, flywheel rotary body contactless shape in space
High speed rotation is realized under state, is in the full suspended state of friction free, can well be avoided high speed rotor frictional dissipation, and vacuum ring
Border can effectively reduce windage loss.External rotor permanent magnet synchronous machine is installed on inside flywheel rotary body, in contrast to inner rotor motor system
Middle motor and flywheel cascaded structure, considerably reduce axle-system axial size, compact-sized, reduce rotor oscillation.Upper asessory shaft
It holds and lower auxiliary bearing for rotor provides interim aiding support, prevent thrashing, rotor falls to be collided with electromagnetic bearing, to turn
Son plays the role of limit and protection.
Detailed description of the invention
Fig. 1 is the structure chart of the flywheel energy storage system of the ladder variable cross-section rotor mixing bearing of the utility model；
Fig. 2 is the structure chart of flywheel；
Fig. 3 is the structure chart of external rotor permanent magnet synchronous machine；
Fig. 4 is radial magnetic bearing structure diagram；
Fig. 5 is auxiliary bearing arrangement schematic diagram.
In figure:
1- flywheel；2- flywheel upper end cover；3- flywheel lower cover；The upper radial magnetic bearing of 4-；Radial magnetic bearing under 5-；6-
External rotor permanent magnet synchronous machine；The upper auxiliary bearing of 7-；Auxiliary bearing under 8-；9- thrust magnetic bearing；10- permanent magnet；11- upper casing
Body；12- lower case；The upper electromagnetic bearing external stator bearing of 13-；Electromagnetic bearing external stator supports under 14-；15- bolt, it is solid on 16-
Dead axle set；Fixed hub under 17-；18- mandrel；19- motor outer rotor；20- electric motor internal stator；21- stator coil；22- silicon steel
Piece rotor.
Specific embodiment
For clarity and conciseness, all features of actual implementation mode are not described in the description.However, should
Understand, much decisions specific to embodiment must be made, during developing any this practical embodiments so as to reality
The objectives of existing developer, for example, meeting restrictive condition those of related to system and business, and these restrictive conditions
It may be changed with the difference of embodiment.In addition, it will also be appreciated that although development is likely to be very multiple
It is miscellaneous and time-consuming, but for the those skilled in the art for having benefited from the utility model disclosure, this development is only
It is routine task.
Here, and also it should be noted is that, in order to avoid having obscured the utility model because of unnecessary details, in Shen
It please illustrate only the apparatus structure and/or processing step closely related with scheme according to the present utility model in file, and save
The other details little with the utility model relationship are omited.
Embodiment: referring to Fig. 1 to Fig. 5, the flywheel energy storage system of the ladder variable cross-section rotor mixing bearing in the present embodiment,
Including energy storage transform portion, rotor bearing part and slave part；Wherein, energy storage transform portion includes: flywheel rotation
Swivel, integrated electric/power generation mutual-inverse type either-rotation motor；Rotator abutment point includes: upper radial magnetic bearing 4, lower radial electricity
Magnetic bearing 5, thrust magnetic bearing 9, upper auxiliary bearing 7, lower auxiliary bearing 8；Slave part includes: shell and mandrel 18.
Wherein, integrated electric/power generation mutual-inverse type either-rotation motor selects external rotor permanent magnet synchronous machine 6, permanent magnetism thrust axis
It holds 9, upper auxiliary bearing 7, external rotor permanent magnet synchronous machine 6, lower auxiliary bearing 8 to be mounted on mandrel 18, in axial direction from top to bottom
Successively arrange.
Upper auxiliary bearing 7, lower auxiliary bearing 8, external rotor permanent magnet synchronous machine 6 inner stator be fixedly arranged at mandrel 18
On.Upper radial magnetic bearing, lower radial magnetic bearing are fixedly mounted on shell, and upper radial magnetic bearing, lower radial electromagnetism
Bearing and flywheel rotary body outer wall are in contactless state.Enclosure interior keeps vacuum state.
Above-mentioned flywheel energy storage system using radial magnetic bearing and thrust magnetic bearing by the contactless suspension of flywheel rotary body,
High speed rotor frictional dissipation can be well avoided, and vacuum environment can effectively reduce windage loss.
Flywheel rotary body material is steel alloy, and flywheel 1 is connected with flywheel upper end cover 2, flywheel lower cover 3 by bolt
Connect, the axial displacement of flywheel rotary body, radial displacement and around horizontal plane x-axis and y-axis rotation by upper radial magnetic bearing 4,
Lower radial magnetic bearing 5 is controlled, and its axial-rotation is controlled by external rotor permanent magnet synchronous machine 6.
It is embedded in permanent magnet 10 in thrust magnetic bearing 9, axial unloading can be carried out to flywheel rotary body.Thrust magnetic bearing 9
There are minim gaps between flywheel rotary body, are not in contact with each other.Meanwhile upper radial magnetic bearing 4 and lower radial magnetic bearing 5
Radial support and active control are carried out to flywheel 1, can well guarantee the stability of bearing bearing.Flywheel rotary body is pushed away by permanent magnetism
The bearing of power bearing and upper radial magnetic bearing 4, lower radial magnetic bearing 5 can be realized under contactless state high in space
Speed rotation, is in the full suspended state of friction free.
Integrated electric/power generation mutual-inverse type either-rotation motor selection selection external rotor permanent magnet synchronous machine 6.External rotor permanent magnet is same
Walk the core component that motor 6 is electric energy conversion.When energy storage, electric energy drives flywheel to add by electric power converter driving motor, motor
Speed rotation, the machinery that electric energy is converted into flywheel can be carried out energy storage；The constant operating of motor later can control signal until receiving to release；It releases
When energy, the power generation of high speed flywheel dragging motor is suitable for the electric current and voltage of load through electric power converter output.
The upper auxiliary bearing 7 is axially positioned on mandrel 18 by upper fixed hub 16；It is lower fixed that lower auxiliary bearing 8 passes through
Position set 17 is axially positioned on mandrel 18；Upper radial magnetic bearing 4 is mounted on shell by upper electromagnetic bearing external stator bearing 13
On, lower radial magnetic bearing 5 is mounted on shell by lower electromagnetic bearing external stator bearing 14.
1 main body of flywheel is ladder variable section structure (as shown in Figure 2), has larger inertia, and flywheel rotary body is to close
Golden Steel material.The ladder variable section structure is the hierarchic structure along flywheel horizontal centre reduced diameter up and down,
Vertical plane transition between ladder.
The external rotor permanent magnet synchronous machine 6 uses outer-rotor structure form (Fig. 3), and motor can be installed on to flywheel rotation
Body interior greatly reduces axle-system axial size, compact-sized, improves rotor dynamics, reduces rotor oscillation.Wherein,
20 be electric motor internal stator, is wound around coil；19 be motor outer rotor, is permanent magnet S mCo.
The upper radial magnetic bearing 4 and lower 5 structure of radial magnetic bearing as shown in figure 4, upper radial magnetic bearing 4 under
5 structure of radial magnetic bearing is identical, including stator coil 21 and the silicon steel sheet rotor 22 being placed in inside stator coil 21, stator line
Circle 21 is the external stator of electromagnetic bearing, and silicon steel sheet rotor 22 is electromagnetic bearing internal rotor, stator coil 21 and silicon steel sheet rotor 22
Between there are gaps.External rotor radial electromagnetic bearing facilitates compact-sizedization design.
Meanwhile auxiliary bearing 7 and lower auxiliary bearing 8 are installed respectively in the upper/lower terminal of flywheel rotary body, it is mentioned for rotor
It for interim aiding support, prevents thrashing rotor from falling and is collided with electromagnetic bearing, play the role of limit and protection for rotor.
Upper auxiliary bearing 7 and lower auxiliary bearing 8 are as shown in Figure 5 respectively.Upper auxiliary bearing 7 and the selection rolling of lower auxiliary bearing 8
Dynamic bearing.There are between small with flywheel upper end cover 2 and flywheel lower cover 3 respectively for housing washer axial face and outer radial surface
Gap, and the gap is less than the gap between stator coil 21 and silicon steel sheet rotor 22.Auxiliary bearing inner ring is fixed, when rotor falls
Or when needing repairing, rotor strike is born in auxiliary bearing outer ring, and rotor is avoided to contact with electromagnetic bearing.
To reduce windage friction when flywheel rotor high speed rotation, system capacity transfer efficiency, system casing is effectively ensured
It inside needs to keep vacuum state.The shell includes upper housing 11 and lower case 12, and the two is connected by bolt 15.
Although the revealed embodiment of the utility model is as above, its content is only to facilitate understand the utility model
Technical solution and the embodiment that uses, be not intended to limit the utility model.Any the utility model technical field
Interior technical staff can be in the form of implementation under the premise of not departing from the utility model revealed core technology scheme
With any modification and variation are made in details, but protection scope defined by the utility model still must be with appended claims
Subject to the range of restriction.
Claims (10)
1. the flywheel energy storage system of ladder variable cross-section rotor mixing bearing, including energy storage transform portion, rotor bearing part
And slave part；
It is characterized by: the energy storage transform portion includes flywheel rotary body and external rotor permanent magnet synchronous machine (6)；Rotor
Supporting part include upper radial magnetic bearing (4), lower radial magnetic bearing (5), upper auxiliary bearing (7), lower auxiliary bearing (8) and
Thrust magnetic bearing (9)；Slave part includes shell and mandrel (18)；
Wherein, the mandrel (18) and flywheel rotary body are mounted in shell, and enclosure interior keeps vacuum state；Flywheel main body is
Ladder variable section structure, the ladder variable section structure are the ladder along flywheel horizontal centre reduced diameter up and down
Structure, vertical plane transition between ladder；The thrust magnetic bearing (9), upper auxiliary bearing (7), external rotor permanent magnet synchronous machine (6)
It is installed on mandrel (18) with lower auxiliary bearing (8), and from top to bottom successively arranges along axial direction；Upper auxiliary bearing (7), under it is auxiliary
The inner stator of bearing (8), external rotor permanent magnet synchronous machine (6) is helped to be fixedly arranged on mandrel (18)；Flywheel rotary body it is upper
Connection is established by upper auxiliary bearing (7) and lower auxiliary bearing (8) and mandrel (18) in end and lower end, and with upper auxiliary bearing (7)
It is in clearance fit state with lower auxiliary bearing (8)；The thrust magnetic bearing (9) is placed in above flywheel rotary body, and and flywheel
There are gaps between the upper surface of rotary body；The external rotor permanent magnet synchronous machine (6) is placed in flywheel a rotating body, and drives flywheel
Rotary body rotation；The upper radial magnetic bearing (4), lower radial magnetic bearing (5) are fixedly mounted on shell, and upper radial electricity
Magnetic bearing (4), lower radial magnetic bearing (5) and flywheel rotary body outer wall are in contactless state.
2. the flywheel energy storage system of ladder variable cross-section rotor mixing bearing according to claim 1, it is characterised in that: described
Flywheel rotary body includes flywheel (1), flywheel upper end cover (2) and flywheel lower cover (3), and flywheel (1) upper and lower side is equipped on flywheel
End cap (2) and flywheel lower cover (3), flywheel upper end cover (2) and upper auxiliary bearing (7) clearance fit, flywheel lower cover (3) is under
Auxiliary bearing (8) clearance fit.
3. the flywheel energy storage system of ladder variable cross-section rotor mixing bearing according to claim 2, it is characterised in that: described
Gap between upper radial magnetic bearing (4), lower radial magnetic bearing (5) and flywheel rotary body outer wall is 0.5~1mm.
4. the flywheel energy storage system of ladder variable cross-section rotor mixing bearing according to claim 3, it is characterised in that: described
Gap between the top and bottom of flywheel rotary body and upper auxiliary bearing (7) and lower auxiliary bearing (8) is 0.1~0.5mm.
5. the flywheel energy storage system of ladder variable cross-section rotor mixing bearing according to claim 4, it is characterised in that: described
Permanent magnet (10) are embedded in thrust magnetic bearing (9).
6. the flywheel energy storage system of ladder variable cross-section rotor mixing bearing according to claim 5, it is characterised in that: described
Gap between thrust magnetic bearing (9) and the upper surface of flywheel rotary body is 0.5~1mm.
7. the flywheel energy storage system of ladder variable cross-section rotor mixing bearing according to claim 6, it is characterised in that: described
The electric motor internal stator (20) of external rotor permanent magnet synchronous machine (6) is wound around coil, outside the motor of external rotor permanent magnet synchronous machine (6)
Rotor (19) is SmCo permanent magnet.
8. the flywheel energy storage system of ladder variable cross-section rotor mixing bearing according to claim 7, it is characterised in that: described
Upper auxiliary bearing (7) is axially positioned on mandrel (18) by upper fixed hub (16)；Lower auxiliary bearing (8) passes through lower positioning sleeve
(17) it is axially positioned on mandrel (18)；Upper radial magnetic bearing (4) supports (13) by upper electromagnetic bearing external stator and is mounted on
On shell, lower radial magnetic bearing (5) supports (14) by lower electromagnetic bearing external stator and is mounted on shell.
9. the flywheel energy storage system of ladder variable cross-section rotor mixing bearing according to claim 8, it is characterised in that: described
Upper radial magnetic bearing (4) is identical as lower radial magnetic bearing (5) structure, including stator coil (21) and is placed in stator coil
(21) internal silicon steel sheet rotor (22), stator coil (21) are the external stator of electromagnetic bearing, and silicon steel sheet rotor (22) is electromagnetism
Bearing internal rotor, there are gaps between stator coil (21) and silicon steel sheet rotor (22).
10. the flywheel energy storage system of ladder variable cross-section rotor mixing bearing according to claim 9, it is characterised in that: institute
Stating shell includes upper housing (11) and lower case (12), and the two is connected by bolt (15), and enclosure interior keeps vacuum state,
Vacuum degree is at least 0.1Pa.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822048330.4U CN208971318U (en) | 2018-12-06 | 2018-12-06 | The flywheel energy storage system of ladder variable cross-section rotor mixing bearing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822048330.4U CN208971318U (en) | 2018-12-06 | 2018-12-06 | The flywheel energy storage system of ladder variable cross-section rotor mixing bearing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208971318U true CN208971318U (en) | 2019-06-11 |
Family
ID=66766283
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201822048330.4U Active CN208971318U (en) | 2018-12-06 | 2018-12-06 | The flywheel energy storage system of ladder variable cross-section rotor mixing bearing |
Country Status (1)
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| CN (1) | CN208971318U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109510381A (en) * | 2018-12-06 | 2019-03-22 | 哈尔滨电气股份有限公司 | The ladder variable cross-section rotor flywheel energy storage system of Permanent-magnet bearing and electromagnetic bearing mixing bearing |
| CN112953095A (en) * | 2021-03-24 | 2021-06-11 | 武汉船用电力推进装置研究所（中国船舶重工集团公司第七一二研究所） | Magnetic coupling low-vibration motor |
-
2018
- 2018-12-06 CN CN201822048330.4U patent/CN208971318U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109510381A (en) * | 2018-12-06 | 2019-03-22 | 哈尔滨电气股份有限公司 | The ladder variable cross-section rotor flywheel energy storage system of Permanent-magnet bearing and electromagnetic bearing mixing bearing |
| CN112953095A (en) * | 2021-03-24 | 2021-06-11 | 武汉船用电力推进装置研究所（中国船舶重工集团公司第七一二研究所） | Magnetic coupling low-vibration motor |
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