CN212258697U - Heat dissipation mechanism of flywheel rotor - Google Patents
Heat dissipation mechanism of flywheel rotor Download PDFInfo
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- CN212258697U CN212258697U CN202020572912.7U CN202020572912U CN212258697U CN 212258697 U CN212258697 U CN 212258697U CN 202020572912 U CN202020572912 U CN 202020572912U CN 212258697 U CN212258697 U CN 212258697U
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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
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Abstract
The application discloses a heat dissipation mechanism of a flywheel rotor, which comprises a rotor and a cooling groove, wherein the rotor is used for rotating around a rotating shaft during working, and the rotor is provided with a cooling channel along the rotating shaft; the cooling groove is used for containing cooling liquid, is arranged at the end part of the rotor along the length direction of the rotating shaft and is communicated with the cooling channel, and comprises a flow channel screw rod which is embedded into the cooling channel. Through the mode, the flywheel rotor can be quickly cooled, an additional liquid pump system can be avoided, the difficulty and complexity of structural design of the system are reduced, and production cost is reduced.
Description
Technical Field
The application relates to the technical field of flywheel energy storage, in particular to a heat dissipation mechanism of a flywheel rotor.
Background
Flywheel energy storage system moves under the special condition of high vacuum, because the heating of flywheel rotor can't carry out convection heat transfer through air medium, can only rely on the radiation of rotor self or other special modes to dispel the heat, the cooling method of current flywheel rotor generally adopts the downthehole oil cooling of axle, but the cooling method that adopts the downthehole oil cooling of axle needs outside liquid pump to carry out the liquid cooling circulation, so just can increase system architecture design degree of difficulty and complexity, and newly-increased liquid pump equipment can bring bigger cost.
SUMMERY OF THE UTILITY MODEL
The application mainly provides a heat dissipation mechanism of a flywheel rotor to solve the problems of high difficulty and high cost of a flywheel rotor cooling mode system structure design in the prior art.
In order to solve the technical problem, the application adopts a technical scheme that: provided is a heat dissipation mechanism for a flywheel rotor, the heat dissipation mechanism including: the rotor is used for rotating around a rotating shaft during work, and a cooling channel is arranged along the rotating shaft; the cooling groove is used for containing cooling liquid, is arranged at the end part of the rotor along the length direction of the rotating shaft and is communicated with the cooling channel, and comprises a flow channel screw rod which is embedded into the cooling channel; when the rotor rotates around the rotating shaft, the cooling channel and the runner screw rotate relatively, so that the cooling liquid is driven to enter the cooling channel from the cooling groove along the runner screw to dissipate heat of the rotor, and the cooling liquid flows into the cooling groove from the cooling channel again under the action of gravity; or the cooling liquid enters the cooling channel under the action of gravity to dissipate heat of the rotor, and when the rotor rotates around the rotating shaft, the cooling channel and the runner screw rotate relatively, so that the cooling liquid is driven to enter the cooling tank from the cooling channel along the runner screw; wherein, the surface of the runner screw rod is provided with a thread runner.
According to an embodiment that this application provided, cooling channel is two, set up respectively in the rotor is followed the length direction's of rotation axis both ends, the cooling tank is two, two the cooling tank corresponds two cooling channel settings respectively.
According to an embodiment that the application provided, the rotor still includes return flow channel and linking channel, return flow channel wind cooling channel and with the cooling channel interval sets up, linking channel set up in cooling channel keeps away from the tip of cooling bath is used for the intercommunication cooling channel with return flow channel's one end, return flow channel's the other end with the cooling bath intercommunication.
According to an embodiment provided herein, the return channel includes a plurality of sub-channels spaced around the cooling channel.
According to an embodiment provided by the present application, the heat dissipation mechanism further includes a housing, and the rotor and the cooling groove are disposed in the housing.
According to an embodiment provided by the present application, the heat dissipation mechanism further includes an external cooling component, the external cooling component is disposed on the housing for exchanging heat with the cooling tank.
According to an embodiment provided herein, the external cooling assembly includes one or more of a liquid cooling system, a heat pipe system, and an air cooling system.
According to an embodiment that this application provided, heat dissipation mechanism still includes motor stator, motor stator set up in the casing, and the cover is located on the rotor, in order to be used for with rotor cooperation drive the rotor winds the rotation axis rotates.
In accordance with an embodiment provided herein, the heat dissipation mechanism further includes a magnetic bearing stator disposed within the housing for levitating the rotor relative to the magnetic bearing stator.
According to an embodiment of the present disclosure, the number of the magnetic bearing stators is two, and the two magnetic bearing stators are respectively disposed on two sides of the motor stator along a length direction of the rotating shaft.
The beneficial effect of this application is: be different from prior art's condition, this application is through setting up cooling channel in the rotor, then set up in the cooling bath that cooling channel connects at the tip of rotor, and through set up the runner screw rod in the cooling bath and imbed into cooling channel, thereby can utilize the rotation of rotor to make cooling channel and runner screw rod take place relative rotation, thereby make the coolant liquid of cooling bath can flow in or flow out cooling channel, and flow out or flow in cooling channel under the action of gravity, thereby make the coolant liquid make a round trip to flow in cooling channel and cooling channel, and continuously take away the heat of rotor, realize flywheel rotor's quick heat dissipation, and adopt above-mentioned design to avoid adopting extra liquid pump system, reduce system structure design's the degree of difficulty and complexity, thereby reduction in production cost.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the description of the embodiments are briefly introduced below, it is obvious that the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without inventive efforts, wherein:
FIG. 1 is a schematic structural diagram of a first embodiment of a heat dissipation mechanism for a flywheel rotor according to the present disclosure;
FIG. 2 is a schematic structural view of one embodiment of a cooling slot in the heat sink mechanism of the flywheel rotor of FIG. 1;
FIG. 3 is a schematic view of a portion A of the heat dissipation mechanism of the flywheel rotor of FIG. 1;
FIG. 4 is a schematic structural diagram illustrating a second embodiment of a heat dissipation mechanism for a flywheel rotor according to the present disclosure;
FIG. 5 is a schematic view of a portion B of the heat dissipation mechanism of the flywheel rotor of FIG. 4;
FIG. 6 is a top view of the return path in the heat dissipation mechanism of the flywheel rotor of FIG. 4.
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
It should be noted that if directional indications (such as up, down, left, right, front, and back … …) are referred to in the embodiments of the present application, the directional indications are only used to explain the relative positional relationship between the components, the movement situation, and the like in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indications are changed accordingly.
In addition, if there is a description of "first", "second", etc. in the embodiments of the present application, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, technical solutions between various embodiments may be combined with each other, but must be realized by a person skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present application.
Referring to fig. 1-6, the present application provides a heat dissipation mechanism 10 for a flywheel rotor, wherein the heat dissipation mechanism 10 includes a rotor 100 and a cooling slot 200.
Wherein the rotor 100 is adapted to be rotatable about a rotation axis during operation, and the rotor 100 is provided with cooling channels 110 along the rotation axis. The cooling groove 200 may be specifically configured to contain a cooling fluid, and the cooling groove 200 is disposed at an end of the rotor 100 in the length direction of the rotating shaft and is communicated with the cooling channel 110, that is, the cooling fluid may flow back and forth between the cooling channel 110 and the cooling groove 200.
As shown in fig. 1, 2 and 3, the cooling tank 200 includes a runner screw 210, and specifically, the runner screw 210 is disposed on the tank bottom surface of the cooling tank 200 and embedded in the cooling channel 110.
In a specific scenario, when the rotor 100 rotates around the rotation axis during operation, the cooling channel 110 and the runner screw 210 rotate relative to each other, and the cooling fluid is driven to enter the cooling channel 110 from the cooling slot 200 along the runner screw 210 to dissipate heat of the rotor 100. Specifically, the surface of the runner screw 210 is provided with a threaded runner, when the cooling channel 110 and the runner screw 210 rotate relatively, based on centrifugal action and fluid dynamics action, the runner screw 210 and the inner wall of the cooling channel 110 form a runner space, and then the cooling liquid in the cooling tank 200 is driven to enter the cooling channel 110 along the runner space, so as to contact the rotor 100, and further dissipate heat of the rotor 100, and then the cooling liquid flows into the cooling tank 200 from the cooling channel 110 again under the action of gravity, so as to complete one cycle. During the rotation of the rotor 100, the cooling fluid circulates from the cooling channel 200 into the cooling channel 110 and out of the cooling channel 110 into the cooling channel 200, thereby removing heat from the rotor 100 to dissipate heat from the rotor 100.
In another specific scenario, the cooling liquid enters the cooling channel 110 under the action of gravity to dissipate heat of the rotor 100, and when the rotor 100 rotates around the rotation axis, the cooling channel 110 and the runner screw 210 rotate relatively to each other, so as to drive the cooling liquid to enter the cooling tank 200 from the cooling channel 110 along the runner screw 210. Specifically, the runner screw 210 in this scenario is similar to the runner screw 210 in the above scenario, but the rotation directions of the threaded runners disposed on the surface of the runner screw 210 are different, so that the cooling liquid can enter the cooling channel 110 along the threaded runners or enter the cooling tank 200 along the threaded runners.
In particular embodiments, the cooling fluid may be water or other flowing fluid having particularly good heat dissipation properties.
In the above embodiment, by providing the cooling channel 110 in the rotor 100, then providing the cooling groove 200 connected to the cooling channel 110 at the end of the rotor 100, and by providing the runner screw 210 in the cooling groove 200 to be embedded in the cooling channel 110, the cooling channel 110 and the runner screw 210 can be relatively rotated by the rotation of the rotor 100, so that the cooling liquid in the cooling groove 200 can flow into or out of the cooling channel 110, and flow out or into the cooling channel 110 under the action of gravity. The cooling fluid flows back and forth in the cooling channels 110 and continuously takes away heat of the rotor 100, so that heat dissipation of the rotor 100 is realized.
Relatively speaking, the cooling liquid mode can be more excellent than the mode of the cooling gas of the prior art for heat dissipation, and because the present application utilizes the rotation of the rotor 100 and the gravity to realize the circulation of the cooling liquid between the cooling groove 200 and the cooling channel 110, the structure is simple and effective. Compared with the mode of inputting the cooling liquid into the rotor 100 through the external water pump in the prior art, the cooling liquid circulation heat dissipation device greatly reduces the complexity of the whole system structure and reduces the cost, and can realize internal circulation heat dissipation regardless of the vacuum environment applied by the whole heat dissipation mechanism 10.
In an embodiment, the number of the cooling channels 110 may be two, and the two cooling channels 110 are disposed at two ends of the rotor 100 along the length direction of the rotating shaft, and are not connected to each other. Correspondingly, there are two cooling grooves 200, and two cooling grooves 200 are disposed corresponding to the two cooling passages 110.
In a specific application scenario, the rotation axis of the rotor 100 coincides with the direction of gravity or assumes a smaller angular setting. The cooling passage 110 located below the rotor 100 may suck the cooling liquid in the cooling bath 200 by a relative rotation with the runner screw 210 and cause the cooling liquid to flow into the cooling bath 200 again by gravity. The cooling channel 110 above the rotor 100 can obtain the cooling liquid in the cooling tank 200 through gravity, and discharge the cooling liquid into the cooling tank 200 through relative rotation with the runner screw 210, so that heat dissipation of the rotor 100 can be realized, and by adopting the above design, an additional liquid pump system can be avoided, the difficulty and complexity of the structural design of the system can be reduced, and the production cost can be reduced.
As shown in fig. 4 and 5, the rotor 100 further includes a backflow channel 120 and a connection channel 130, the backflow channel 120 is disposed around the cooling channel 110 and spaced apart from the cooling channel 110, the connection channel 130 is disposed at an end of the cooling channel 110 away from the cooling slot 200 and is used for communicating one ends of the cooling channel 110 and the backflow channel 120, and the other end of the backflow channel 120 is communicated with the cooling slot 200.
In a specific scenario, if the cooling fluid enters the cooling channel 110 through the relative rotation between the cooling channel 110 and the runner screw 210, the cooling fluid enters the connecting channel 130 and the return channel 120 in sequence under the action of inertia, and flows into the cooling tank 200 from the return channel 120 under the action of gravity, thereby completing a cycle.
In another specific scenario, if the cooling fluid is forced into the cooling channel 110 by the action of gravity. In an embodiment, the cooling channel 110 and the return channel 120 are both below the liquid level of the cooling liquid, so that the cooling liquid can enter the cooling channel 110 and the return channel 120 simultaneously under the action of gravity, and then when the cooling channel 110 and the runner screw 210 rotate relatively, the cooling liquid in the cooling channel 110 flows out through the runner screw 210 and enters the cooling tank 200, and because the water level of the cooling liquid in the cooling channel 110 is lowered, the cooling liquid in the return channel 120 enters the cooling channel 110 through the connecting channel 130 and flows out through the runner screw 210, and simultaneously, when the cooling channel 110 and the runner screw 210 rotate relatively, a part of the cooling liquid enters the cooling channel 110 under the action of gravity; that is, for the entire cycle, the cooling liquid enters the cooling channel 110 through the return channel 120 and directly enters the cooling channel 110 under the influence of gravity, and then flows out through the runner screw 210 and returns to the cooling bath 200, thereby completing one cycle.
In another embodiment, the cooling channel 110 is higher than the liquid level of the cooling liquid, and the return channel 120 is lower than the liquid level of the cooling liquid, so that the cooling liquid can only enter the cooling channel 110 from the return channel 120, and then when the cooling channel 110 and the runner screw 210 rotate relatively, the cooling liquid in the cooling channel 110 flows out through the runner screw 210 and enters the cooling tank 200, thereby completing one cycle.
In a specific embodiment, the connecting channel 130 and the return channel 120 may be the same channel, i.e., the connecting channel 130 may be an arc-shaped channel integrally connecting the cooling channel 110 and the return channel 120.
In the above embodiment, by providing the return passage 120 around the cooling passage 110, on the one hand, the contact area with the rotor 100 is increased, and on the other hand, the circulation speed of the cooling liquid is increased, and the cooling liquid is prevented from failing to flow out of the cooling passage 110 and reentering the cooling tank 200 due to the excessively high rotation speed of the rotor 100. Therefore, the heat dissipation effect of the flywheel rotor can be greatly improved by increasing the contact area of the cooling liquid and the rotor 100 and accelerating the circulation speed of the cooling liquid in the rotor 100, and the adoption of the design can avoid the adoption of an additional liquid pump system, reduce the difficulty and complexity of the structural design of the system and further reduce the production cost.
As shown in fig. 6, the return channel 120 includes a plurality of sub-channels 121, and the plurality of sub-channels 121 are spaced around the cooling channel 110. Specifically, the cross-section of the return channel 120 perpendicular to the rotation axis of the rotor 100 may be a continuous circular ring, or may include a plurality of circular arcs, the plurality of circular arcs being spaced around the cooling channel 110, and the plurality of circular arcs extending to form a continuous circular ring.
By providing the return passage 120 as a plurality of sub-passages 121, the passage volume of each sub-passage 121 can be reduced, and the circulation speed of the cooling liquid in the sub-passage 121 can be further increased and the contact area with the rotor 100 can be increased, thereby enhancing the heat dissipation effect.
As shown in fig. 1, the heat dissipation mechanism 10 further includes a housing 300, and the rotor 100 and the cooling groove 200 are disposed in the housing 300.
As shown in fig. 1, the heat dissipation mechanism 10 further includes a motor stator 400, wherein the motor stator 400 is disposed in the housing 300 and sleeved on the rotor 100, so as to cooperate with the rotor 100 to drive the rotor 100 to rotate around a rotation axis.
As shown in fig. 1, the heat dissipation mechanism 10 further includes a magnetic bearing stator 500, wherein the magnetic bearing stator 500 is disposed in the housing 300 and sleeved on the rotor 100 for controlling the rotor 100 to suspend relative to the magnetic bearing stator 500. The magnetic bearing stators 500 are two in detail, and the two magnetic bearing stators 500 are respectively disposed at both sides of the motor stator 400 along a length direction of the rotation shaft.
Specifically, the magnetic bearing stator 500 is further used to control the rotor 100 to be levitated with respect to the motor stator 400 and the housing 300.
In a particular embodiment, the magnetic bearing stator 500 cooperates with the rotor 100 by providing an electromagnetic force or other form of magnetic force, thereby levitating the rotor 100 relative to the magnetic bearing stator 500, the motor stator 400, and the housing 300.
As shown in fig. 1, the heat dissipation mechanism 10 further includes an external cooling assembly 600, and the external cooling assembly 600 is disposed on the housing 300 for exchanging heat with the cooling tank 200. In particular for exchanging heat with the cooling fluid in the cooling bath 200. Therefore, the cooling device can be used for dissipating heat of the cooling groove 200 or the cooling liquid, and heat brought by the cooling liquid from the rotor 100 is taken away through the external cooling assembly 600, so that the heat dissipation effect of the cooling liquid is ensured.
Specifically, the external cooling assembly 600 includes one or more of a liquid cooling system, a heat pipe system, and an air cooling system.
In summary, the present application provides a heat dissipation mechanism, in which a cooling channel 110 is disposed in a rotor 100, a cooling groove 200 connected to the cooling channel 110 is disposed at an end of the rotor 100, and a runner screw 210 is disposed in the cooling groove 200 and embedded in the cooling channel 110, so that the cooling channel 110 and the runner screw 210 rotate relative to each other by rotation of the rotor 100, and thus cooling liquid in the cooling groove 200 can flow into or out of the cooling channel 110 and flow out or into the cooling channel 110 under the action of gravity, so that the cooling liquid flows back and forth in the cooling channel 110 and the cooling channel 110, and continuously takes away heat of the rotor 100. And further, by providing the return passage 120 around the cooling passage 110, on the one hand, the contact area with the rotor 100 is increased, and on the other hand, the circulation speed of the cooling liquid is increased, preventing the cooling liquid from failing to flow out of the cooling passage 110 to re-enter the cooling bath 200 due to the excessively high rotation speed of the rotor 100. Therefore, the rapid heat dissipation of the flywheel rotor is realized by increasing the contact area of the cooling liquid and the rotor 100 and accelerating the circulation speed of the cooling liquid in the rotor 100, and by adopting the design, an additional liquid pump system can be avoided, the difficulty and complexity of the structural design of the system are reduced, and the production cost is reduced.
The above description is only an example of the present application and is not intended to limit the scope of the present application, and all modifications of equivalent structures and equivalent processes, which are made by the contents of the specification and the drawings, or which are directly or indirectly applied to other related technical fields, are intended to be included within the scope of the present application.
Claims (10)
1. A heat dissipation mechanism of a flywheel rotor, characterized in that the heat dissipation mechanism comprises:
the rotor is used for rotating around a rotating shaft during work, and a cooling channel is arranged along the rotating shaft;
the cooling groove is used for containing cooling liquid, is arranged at the end part of the rotor along the length direction of the rotating shaft and is communicated with the cooling channel, and comprises a flow channel screw rod which is embedded into the cooling channel;
when the rotor rotates around the rotating shaft, the cooling channel and the runner screw rotate relatively, so that the cooling liquid is driven to enter the cooling channel from the cooling groove along the runner screw to dissipate heat of the rotor, and the cooling liquid flows into the cooling groove from the cooling channel again under the action of gravity; or
The cooling liquid enters the cooling channel under the action of gravity to dissipate heat of the rotor, and when the rotor rotates around the rotating shaft, the cooling channel and the runner screw rotate relatively, so that the cooling liquid is driven to enter the cooling tank from the cooling channel along the runner screw;
wherein, the surface of the runner screw rod is provided with a thread runner.
2. The heat dissipating mechanism of claim 1, wherein the two cooling channels are respectively disposed at two ends of the rotor along a length direction of the rotating shaft, and the two cooling grooves are respectively disposed corresponding to the two cooling channels.
3. The heat dissipating mechanism of claim 1, wherein the rotor further comprises a return channel and a connecting channel, the return channel is disposed around the cooling channel and spaced from the cooling channel, the connecting channel is disposed at an end of the cooling channel away from the cooling slot for communicating the cooling channel with one end of the return channel, and the other end of the return channel is communicated with the cooling slot.
4. The heat dissipation mechanism of claim 3, wherein the return channel comprises a plurality of sub-channels spaced around the cooling channel.
5. The heat dissipation mechanism of claim 1, further comprising a housing, the rotor and the cooling slot being disposed within the housing.
6. The heat dissipating mechanism of claim 5, further comprising an external cooling assembly disposed on the housing for exchanging heat with the cooling channel.
7. The heat dissipation mechanism of claim 6, wherein the external cooling component comprises one or a combination of a liquid cooling system, a heat pipe system, and an air cooling system.
8. The heat dissipating mechanism of claim 5, further comprising a motor stator disposed in the housing and sleeved on the rotor, wherein the motor stator is configured to cooperate with the rotor to drive the rotor to rotate around the rotating shaft.
9. The heat dissipation mechanism of claim 8, further comprising a magnetic bearing stator disposed within the housing for levitating the rotor relative to the magnetic bearing stator.
10. The heat dissipating mechanism of claim 9, wherein the number of the magnetic bearing stators is two, and the two magnetic bearing stators are respectively disposed on both sides of the motor stator in a length direction of the rotating shaft.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922454910 | 2019-12-30 | ||
| CN2019224549108 | 2019-12-30 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212258697U true CN212258697U (en) | 2020-12-29 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020572912.7U Active CN212258697U (en) | 2019-12-30 | 2020-04-16 | Heat dissipation mechanism of flywheel rotor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212258697U (en) |
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2020
- 2020-04-16 CN CN202020572912.7U patent/CN212258697U/en active Active
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Effective date of registration: 20210729 Address after: 518000 3601, 36th floor, Shenzhen Bay venture capital building, Yuehai street, Nanshan District, Shenzhen City, Guangdong Province Patentee after: Candela (Shenzhen) New Energy Technology Co.,Ltd. Address before: 518000 3501, 35th floor, Shenzhen Bay venture capital building, 25 Haitian 2nd Road, Binhai community, Yuehai street, Nanshan District, Shenzhen City, Guangdong Province Patentee before: CANDELA (SHENZHEN) TECHNOLOGY INNOVATION Co.,Ltd. |