CN108900039A - A kind of flywheel energy storage rotor vacuum radiating system - Google Patents
A kind of flywheel energy storage rotor vacuum radiating system Download PDFInfo
- Publication number
- CN108900039A CN108900039A CN201811044270.7A CN201811044270A CN108900039A CN 108900039 A CN108900039 A CN 108900039A CN 201811044270 A CN201811044270 A CN 201811044270A CN 108900039 A CN108900039 A CN 108900039A
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- China
- Prior art keywords
- rotor
- energy storage
- vacuum
- flywheel energy
- flywheel
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- 238000004146 energy storage Methods 0.000 title claims abstract description 61
- 238000001816 cooling Methods 0.000 claims abstract description 12
- 238000012546 transfer Methods 0.000 claims abstract description 9
- 230000017525 heat dissipation Effects 0.000 claims abstract description 8
- 230000005855 radiation Effects 0.000 claims abstract description 6
- 239000007788 liquid Substances 0.000 claims description 17
- 239000012530 fluid Substances 0.000 claims description 16
- 238000010248 power generation Methods 0.000 claims description 13
- 238000000034 method Methods 0.000 claims description 7
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 claims description 6
- 238000001704 evaporation Methods 0.000 claims description 5
- 230000008020 evaporation Effects 0.000 claims description 5
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 claims description 4
- 238000007789 sealing Methods 0.000 claims description 4
- 238000009833 condensation Methods 0.000 claims description 3
- 230000005494 condensation Effects 0.000 claims description 3
- 230000005611 electricity Effects 0.000 claims description 3
- 230000008569 process Effects 0.000 claims description 3
- 229910021529 ammonia Inorganic materials 0.000 claims description 2
- 239000000203 mixture Substances 0.000 claims description 2
- 230000007704 transition Effects 0.000 claims description 2
- 230000005484 gravity Effects 0.000 abstract 2
- 238000005516 engineering process Methods 0.000 description 5
- 238000011161 development Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000010025 steaming Methods 0.000 description 2
- 230000033228 biological regulation Effects 0.000 description 1
- 239000003990 capacitor Substances 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000001172 regenerating effect Effects 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K9/00—Arrangements for cooling or ventilating
- H02K9/19—Arrangements for cooling or ventilating for machines with closed casing and closed-circuit cooling using a liquid cooling medium, e.g. oil
- H02K9/20—Arrangements for cooling or ventilating for machines with closed casing and closed-circuit cooling using a liquid cooling medium, e.g. oil wherein the cooling medium vaporises within the machine casing
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
Abstract
The invention discloses a kind of flywheel energy storage rotor vacuum radiating systems, are mainly made of vaporising device, condensing unit and return.System rotor is hollow structure, and vaporising device is arranged in rotor center axis hole, and corresponding with the position of heat sources such as motor, electromagnetic bearing, and Mechanical Contact does not occur with axis inner wall, and rotor heat is transferred to vaporising device by way of radiation heat transfer.According to the loop gravity assisted heat pipe principle of Natural Circulation two-phase thermo-siphon, condensing unit is arranged in outside flywheel energy storage system, and height above sea level is higher than vaporising device, is flowed using working medium circulation in gravitional force driving cooling system.The present invention considers the specific demand that flywheel energy storage system rotor radiates under vacuum state, combines the loop gravity assisted heat pipe of Natural Circulation two-phase thermo-siphon, the heat dissipation suitable for flywheel energy storage system rotor under vacuum condition.
Description
Technical field
The invention belongs to energy storage technologies fields, are related to a kind of flywheel energy storage rotor cooling system, and in particular to a kind of
It is based on Natural Circulation two-phase thermo-siphon loop heat pipe and the flywheel energy storage rotor heat dissipation for strengthening radiation heat transfer under vacuum condition
System.
Background technique
Flywheel energy storage is already applied to new-energy automobile, and with the gradually development of renewable energy, power supply and demand is uneven
Contradiction it is more obvious.Energy storage technology can provide strong branch for renewable energy peak load regulation network and improvement power quality etc.
It holds, the consumption for improving renewable energy is horizontal, and traditional fossil energy is pushed gradually to change to renewable energy, realizes energy industry
New development.
Currently, power energy storage technology includes draw water energy storage, compressed-air energy storage, flywheel energy storage, batteries to store energy, superconducting magnetic
Energy and super capacitor etc..Wherein, flywheel energy storage has fast high-efficient (84%~96%), response, power height, service life long and clear
The features such as clean pollution-free, is mainly used in electric car, smart grid/distributed power grid FM amplitude modulation, high quality power supply, aviation
The fields such as space flight and rail traffic energy regenerating.It is gradually perfect with Flywheel energy storage technique, it will become and most develop at present
One of energy storage technology of future.
A lot of research and application has been carried out for Flywheel energy storage technique both at home and abroad.Currently, for existing commercial applications
Or the flywheel energy storage system of prototype design, external low-speed flywheel energy storage single machine scale are：3MW,60MJ,7700r/min；It is domestic low
Fast flywheel energy storage single machine scale is：1MW,60MJ,8000r/min.Overseas high speed flywheel energy storage scale is：333kW,90MJ,
52000r/min；Domestic high-speed flywheel energy storage scale is：300kW,36MJ,16000r/min.With the day of Flywheel energy storage technique
It opens up increasingly, the features such as time charge and discharge of high-power, high revolving speed, short duration high frequency and high vacuum, flywheel energy storage system is caused to face sternly
High radiating requirements.Especially each rotor of flywheel energy storage system, is influenced by phase harmonic wave, and induced electricity is generated at its magnetic pole
Stream, and temperature is caused to rise.Since each rotor of flywheel energy storage system is in vacuum and magnetic suspension state, heat derives are difficult.
To prevent rotor overtemperature, the reinforcing heat dissipation of vacuum condition lower rotor part is good problem to study.
Summary of the invention
For under vacuum condition, the difficult problem of each rotor heat dissipation of flywheel energy storage system, the purpose of the present invention is to propose to
A kind of flywheel energy storage rotor vacuum radiating system can effectively strengthen the radiation heat transfer under vacuum condition, and make cooling dress
It sets between each rotor of system without Mechanical Contact, frictional dissipation can be eliminated, be provided with effect for flywheel energy storage rotor heat dissipation in vacuum
Solution.
To achieve the above objectives, the technical solution of the invention is as follows：
A kind of flywheel energy storage rotor vacuum radiating system, including vacuum tightness shell and it is successively set on institute from top to bottom
Motor, flywheel, the electromagnetic bearing in vacuum tightness shell are stated, the motor, flywheel, electromagnetic bearing are arranged in motor and turn
Son, flywheel rotor, on electromagnetic bearing rotor, the rotor, flywheel rotor, electromagnetic bearing rotor coaxial are fixedly connected,
It is characterized in that,
The rotor, electromagnetic bearing rotor and flywheel rotor are hollow structure,
Position corresponding with heat source is respectively provided with a vaporising device, the steaming in the rotor, electromagnetic bearing rotor
Transmitting apparatus and the electric rotor, electromagnetic bearing rotor inner wall between without Mechanical Contact,
A condensing unit is arranged in the vacuum tightness hull outside, and the height above sea level of the condensing unit is higher than each steaming
Transmitting apparatus, each vaporising device, condensing unit pass through the closed Natural Circulation two-phase thermo-siphon of return in series one
Heat-radiation loop, filled with cycle fluid in the Natural Circulation two-phase thermo-siphon heat-radiation loop.
Flywheel energy storage vacuum rotor cooling system of the invention, the course of work are：
In the flywheel energy storage system storage/exoergic process, the electronic/power generation all-in-one machine and the electromagnetic bearing will be in institutes
It states and generates heat in electronic/power generation integrated machine rotor and the electromagnetic bearing rotor, heat is conducted to the electronic/power generation integrated
Machine rotor and the electromagnetic bearing rotor hollow interior surface, and in a vacuum in a manner of radiation heat transfer, transfer heat to
The vaporising device, liquid circulation working medium is heated in the vaporising device and evaporation endothermic, and gaseous recycle working medium is along the circuit
Pipeline flows to the condensing unit, and carries out condensation heat dissipation, and cycle fluid becomes liquid, the condensing unit height above sea level from gaseous state
Height is higher than the vaporising device, therefore cycle fluid liquid level is higher than the liquid at the evaporator at the condensing unit
Position, liquid level difference drive circulating for cycle fluid in the flywheel energy storage rotor vacuum radiating system, constantly take away the electricity
The heat generated at dynamic/power generation integrated machine rotor and the electromagnetic bearing rotor, to guarantee that the flywheel energy storage system is transported safely
Row.
Preferably, when the flywheel energy storage rotor vacuum radiating system is run, the vacuum pump is opened, when vacuum degree reaches
When to a certain degree, the valve is closed, keeps vacuum in the rotor vacuum radiating system, the phase transformation to control loop working medium
Temperature, and then the transmitting heat between the sleeve rotor and the vaporising device is controlled, reduce the sleeve rotor temperature.
Preferably, the gas cycle fluid is monoatomic molecules gas, Atom Molecule Gas or polyatomic molecule gas
One or more mixing of body.
Preferably, one or two kinds of mixtures of the gas cycle fluid vapor, ammonia or methanol.
Preferably, the vaporising device is coil or fin-tube type.
Preferably, the condensing unit is shell and tube, fin-tube type, plate-fin or board-like.
Preferably, the external of the vacuum tightness shell is arranged a vacuum pump, the air inlet of the vacuum pump and described true
The inner cavity connection of empty closed shell.
Preferably, sealing device is equipped between the return and vacuum tightness shell.
Preferably, the motor is electronic/power generation all-in-one machine.
Compared with the existing technology, flywheel energy storage rotor vacuum radiating system of the invention has significant technological merit：It is real
Cooling system and flywheel energy storage system sleeve rotor are showed without Mechanical Contact, have eliminated system friction loss, there is low-loss, spirit
The advantages that active strong, suitable for the heat dissipation of vacuum condition flywheel energy storage system rotor.
Detailed description of the invention
Fig. 1 is flywheel energy storage vacuum rotor cooling system structural schematic diagram of the invention；
Fig. 2 is vaporising device structural schematic diagram of the invention, and in figure, (A) is spiral coil structure, and (B) is fin-tube type knot
Structure.
Specific embodiment
To make the objectives, technical solutions, and advantages of the present invention more comprehensible, right hereinafter, referring to the drawings and the embodiments,
The present invention is further described.It should be noted that the implementation for not being painted or describing in attached drawing, is technical field
In form known to a person of ordinary skill in the art.
As shown in Figure 1, flywheel energy storage vacuum rotor cooling system of the invention, including vacuum tightness shell 1, electromagnetic bearing
11, electromagnetic bearing rotor 2, flywheel 3, flywheel rotor 5, electronic/power generation all-in-one machine 13, electronic/power generation integrated machine rotor 6, vacuum
15, valve 14, sealing device 7,10, fluid reservoir 8, valve 9,18, vaporising device 12, vacuum pump 17, return 4,16 are pumped,
20, condensing unit 19.
Vaporising device 12 is arranged in inside electronic/power generation integrated machine rotor 6 and electromagnetic bearing rotor 2, and vaporising device 12
With electronic/power generation integrated machine rotor 6 and 2 hollow wall of electromagnetic bearing rotor without Mechanical Contact.By circuit between vaporising device 12
Pipeline 4 connects, and is sealed between return 16,20 and vacuum tightness shell 1 using sealing device 7,10.19 cloth of condensing unit
Set outside shell 1, height above sea level be higher than vaporising device 12, between vaporising device 12 and condensing unit 19 by return 4,
16,20 are connected, and constitute circulation cooling circuit.The structure type of vaporising device 12 is 21 formula of spiral coil structure or fin-tube type structure
22, as shown in Figure 2.
Flywheel energy storage vacuum rotor cooling system of the invention, the course of work are：
In flywheel energy storage system storage/exoergic process, it will be produced in electronic/power generation integrated machine rotor 6 and electromagnetic bearing rotor 2
Heat amount, heat are conducted to 2 hollow interior surface of electronic/power generation integrated machine rotor 6 and electromagnetic bearing rotor, and in a vacuum with
The mode of radiation heat transfer transfers heat to vaporising device 12, the heated simultaneously evaporation endothermic of liquid circulation working medium in vaporising device 12,
Cycle fluid becomes gaseous state from liquid, and gaseous recycle working medium flows to condensing unit 19 along return 16, and carries out condensation and dissipate
Heat, cycle fluid become liquid from gaseous state.Since 19 height above sea level of condenser is higher than vaporising device 12, at condensing unit 19
Cycle fluid liquid level is higher than the liquid level at vaporising device 12, follows in liquid level difference driving flywheel energy storage rotor vacuum radiating system
Ring working medium circulates, and liquid circulation working medium flows to vaporising device 12 through return 20 by condensing unit 19, completes to follow
Circulation is dynamic, and constantly takes away heat caused by heat source at sleeve rotor, to guarantee the flywheel energy storage system safe operation.
When flywheel energy storage rotor vacuum radiating system is run, vacuum pump 17 and valve 18 are opened, when vacuum degree reaches certain
When degree, the valve 18 is closed, keeps vacuum in rotor cooling system, to the phase transition temperature of control loop working medium, in turn
Electronic/heat for being transmitted between power generation integrated machine rotor 6 and electromagnetic bearing rotor 2 and vaporising device 11 is controlled, system is reduced
Temperature of rotor.
In addition, it should be noted that, the specific embodiments described in this specification, the shape of parts and components are named
Title etc. can be different.All equivalent or simple changes done according to structure, feature and principle described in present inventive concept, are included in
In protection scope of the present invention.Those skilled in the art can do described specific embodiment various
The mode that the modify or supplement or adopt of various kinds is similar substitutes, and without departing from structure of the invention or surmounts present claims
Range defined in book, is within the scope of protection of the invention.
Claims (10)
1. a kind of flywheel energy storage rotor vacuum radiating system, including vacuum tightness shell and it is successively set on from top to bottom described
Motor, flywheel, electromagnetic bearing in vacuum tightness shell, the motor, flywheel, electromagnetic bearing be arranged in rotor,
On flywheel rotor, electromagnetic bearing rotor, the rotor, flywheel rotor, electromagnetic bearing rotor coaxial are fixedly connected,
It is characterized in that,
The rotor, electromagnetic bearing rotor and flywheel rotor are hollow structure,
Position corresponding with heat source is respectively provided with a vaporising device, the evaporation dress in the rotor, electromagnetic bearing rotor
Set with the electric rotor, electromagnetic bearing rotor inner wall between without Mechanical Contact,
A condensing unit is arranged in the vacuum tightness hull outside, and the height above sea level of the condensing unit is higher than each evaporation dress
It sets, each vaporising device, condensing unit are radiated by the closed Natural Circulation two-phase thermo-siphon of return in series one
Circuit, filled with cycle fluid in the Natural Circulation two-phase thermo-siphon heat-radiation loop.
2. the flywheel energy storage rotor vacuum radiating system according to the claims, which is characterized in that the flywheel energy storage
The vacuum rotor cooling system course of work is：
In the flywheel energy storage system storage/exoergic process, at the rotor, electromagnetic bearing rotor generate heat conduct to
The hollow interior surface of the rotor, electromagnetic bearing rotor, and in a vacuum in a manner of radiation heat transfer, it transfers heat to
At each vaporising device, the heated simultaneously evaporation endothermic of cycle fluid is changed into gaseous state by liquid in the vaporising device, and gaseous state follows
Ring working medium flows to the condensing unit along return, and carries out condensation heat dissipation, and cycle fluid becomes liquid from gaseous state, is in
The condensing unit liquid level of High aititude is higher than the vaporising device liquid level, and liquid level difference drives in the flywheel energy storage cooling system
Cycle fluid circulates, and constantly takes away heat caused by heat source.
3. the flywheel energy storage rotor vacuum radiating system according to the claims, it is characterised in that:The vaporising device
Structure type be spiral coil structural formula or fin-tube type structure.
4. the flywheel energy storage rotor vacuum radiating system according to the claims, it is characterised in that：The cycle fluid
For one or more mixing of monatomic, diatomic or polyatomic molecule gas.
5. the flywheel energy storage rotor vacuum radiating system according to the claims, it is characterised in that：The cycle fluid
For one or two kinds of mixtures of vapor, ammonia or methanol.
6. the flywheel energy storage rotor vacuum radiating system according to the claims, it is characterised in that：The condensing unit
Form is shell and tube, fin-tube type, plate-fin or board-like one or more combinations.
7. the flywheel energy storage rotor vacuum radiating system according to the claims, it is characterised in that：The vacuum tightness
A vacuum pump is arranged in the external of shell, and the air inlet of the vacuum pump is connected to the inner cavity of the vacuum tightness shell.
8. the flywheel energy storage rotor vacuum radiating system according to the claims, it is characterised in that：The return
Sealing device is equipped between vacuum tightness shell.
9. the flywheel energy storage rotor vacuum radiating system according to the claims, it is characterised in that：The motor is electricity
Dynamic/power generation all-in-one machine.
10. flywheel energy storage rotor vacuum radiating system according to claim 7, it is characterised in that：The flywheel energy storage turns
When sub- vacuum radiating system is run, the vacuum pump is opened, when vacuum degree reaches a certain level, closes the valve, kept
Vacuum in the rotor vacuum radiating system, to the phase transition temperature of control loop working medium, and then control the sleeve rotor with
Transmitting heat between the vaporising device reduces the sleeve rotor temperature.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811044270.7A CN108900039B (en) | 2018-09-07 | 2018-09-07 | Flywheel energy storage rotor vacuum heat dissipation system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811044270.7A CN108900039B (en) | 2018-09-07 | 2018-09-07 | Flywheel energy storage rotor vacuum heat dissipation system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108900039A true CN108900039A (en) | 2018-11-27 |
| CN108900039B CN108900039B (en) | 2024-03-19 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811044270.7A Active CN108900039B (en) | 2018-09-07 | 2018-09-07 | Flywheel energy storage rotor vacuum heat dissipation system |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110879159A (en) * | 2019-12-27 | 2020-03-13 | 长安大学 | High-temperature high-humidity aerosol sampling device and sampling method |
| CN112510894A (en) * | 2020-12-07 | 2021-03-16 | 中国科学院工程热物理研究所 | Flywheel energy storage rotor cooling system |
| CN114244070A (en) * | 2021-12-21 | 2022-03-25 | 国网江苏省电力有限公司经济技术研究院 | Cooling pipeline transmission coupling device of superconducting phase modulator |
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|---|---|---|---|---|
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| CN112510894A (en) * | 2020-12-07 | 2021-03-16 | 中国科学院工程热物理研究所 | Flywheel energy storage rotor cooling system |
| CN114244070A (en) * | 2021-12-21 | 2022-03-25 | 国网江苏省电力有限公司经济技术研究院 | Cooling pipeline transmission coupling device of superconducting phase modulator |
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| CN108900039B (en) | 2024-03-19 |
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