CN117927612A - Air cushion flywheel energy storage device - Google Patents
Air cushion flywheel energy storage device Download PDFInfo
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- CN117927612A CN117927612A CN202410323113.9A CN202410323113A CN117927612A CN 117927612 A CN117927612 A CN 117927612A CN 202410323113 A CN202410323113 A CN 202410323113A CN 117927612 A CN117927612 A CN 117927612A
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- 238000004146 energy storage Methods 0.000 title claims abstract description 28
- 238000007789 sealing Methods 0.000 claims abstract description 161
- 238000005192 partition Methods 0.000 claims description 64
- 230000001360 synchronised effect Effects 0.000 claims description 12
- 230000000694 effects Effects 0.000 abstract description 27
- 238000007667 floating Methods 0.000 description 25
- 230000006870 function Effects 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 5
- 239000002184 metal Substances 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 230000007246 mechanism Effects 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical group [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 239000007769 metal material Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000007792 addition Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000013022 venting Methods 0.000 description 1
Classifications
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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
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F15/00—Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
- F16F15/30—Flywheels
- F16F15/315—Flywheels characterised by their supporting arrangement, e.g. mountings, cages, securing inertia member to shaft
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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
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F15/00—Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
- F16F15/30—Flywheels
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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
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J15/00—Sealings
- F16J15/16—Sealings between relatively-moving surfaces
- F16J15/32—Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings
- F16J15/3284—Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings characterised by their structure; Selection of materials
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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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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Aviation & Aerospace Engineering (AREA)
- Sealing Using Fluids, Sealing Without Contact, And Removal Of Oil (AREA)
Abstract
The invention discloses an air cushion flywheel energy storage device, which is characterized in that a lifting disk is arranged, the upper part of the lifting disk is provided with a supporting disk with the diameter far smaller than that of the lifting disk, the lifting force of an air cushion acts on the lifting disk firstly, and then the lifting disk transmits the force to a rotor; the second gas rotary sealing device is arranged on the inner side of the lifting disk and on the upper end surface of the lifting disk; the diameter of the second gas rotary sealing device close to the high-pressure side position is far larger than that of the second gas rotary sealing device close to the low-pressure side position, the first gas rotary sealing device, the second gas rotary sealing device and the third gas rotary sealing device are combination of various seals, the air cushion area can be met, the influence of the sealing devices is avoided, the flywheel arrangement is not too high when the high air pressure is sealed, and the optimal balance of good sealing effect and low cost can be achieved.
Description
Technical Field
The invention belongs to the field of flywheel energy storage, and particularly relates to an air cushion flywheel energy storage device.
Background
In the field of air cushion flywheel energy storage, the sealing device related to the prior art has a larger improvement lifting space, and particularly relates to a high-pressure air cushion sealing technology which is most important for the air cushion flywheel device.
Chinese patent publication No. CN101788034a discloses a flywheel floating on an air cushion, and describes a sealing structure. The sealed flywheel has high rotating speed and low air pressure, and may realize leakage-free sealing. However, when the flywheel is just started or rotates at a low speed, the sealing liquid cannot play a role in sealing because of insufficient centrifugal force, so that an air cushion cannot be generated, and the flywheel cannot be lifted.
Chinese patent publication No. CN101873027a discloses an air cushion flywheel energy storage device, which describes a sealed air box. The sealing structure belongs to dynamic non-contact sealing, but a specific implementation structure is not disclosed, and the sealing structure cannot be truly implemented.
Chinese patent publication No. CN101710807a discloses a megawatt low-speed flywheel energy storage device, in which a dynamic annular sealing device is arranged on the bottom surface of the flywheel, and high-pressure gas or high-pressure liquid is enclosed inside the flywheel. But does not disclose the specific construction of the dynamic annular seal.
The Chinese patent with publication number CN116292762B discloses a synchronous stable sealed frame type air cushion flywheel energy storage device, wherein (1) an air cushion of the device directly acts on a fixed frame, and the fixed frame is directly fixed at the bottom of the flywheel, wherein the fixed frame only has the function of facilitating precise processing, which is equivalent to the air cushion directly acts at the bottom of a rotor; (2) The gas rotary sealing device is arranged at the periphery of the fixing frame; (3) The diameter of the high-pressure end and the diameter of the low-pressure end of the gas rotary sealing device are the same. (4) The patent gas rotary sealing device adopts only one gas rotary sealing device, and the problems brought by the patent are that:
1. The diameter of the air cushion is not easy to be too large. The patent air cushion directly acts on the fixing frame, the gas rotary sealing device is arranged on the periphery of the fixing frame, and the diameter of the high-pressure end and the diameter of the low-pressure end of the gas rotary sealing device are the same. The diameter of the air cushion is only the same as that of the gas rotary sealing device, and the air cushion diameter is limited by the diameter of the gas rotary sealing device, and if the diameter of the gas rotary sealing device cannot be too large, the air cushion diameter cannot be too large, so that the lifting force of the air cushion is limited.
In the development, the diameter of the gas rotary sealing device is not too large. First, some gas rotary seals cannot be oversized in diameter, e.g., floating ring seals with the best seal diameters exceeding 1 meter have been very difficult to manufacture. Second, some gas rotary seals are more expensive as the diameter of the seal is larger, e.g., 1 meter in diameter for floating ring seals, already approaching 20 kiloyuan. Finally, the larger the diameter of the gas rotary sealing device is, the larger the air leakage amount is, the daily use cost is high, such as the cheapest labyrinth seal with the worst sealing effect, the labyrinth seal with the diameter of 1 meter is used, when the air pressure in the sealing air cushion is 0.8 megapascals, the air leakage amount is about 330 liters per second, a plurality of large-scale air compressors are required to continuously work during working, the use cost is high, and the air leakage amount is larger along with the increase of the diameter of the gas rotary sealing device.
And secondly, the air pressure in the air cushion is not too high. Typically, sealing at very high pressures requires a long seal, and the patent gas rotary seal is disposed around the perimeter of the mount with the high pressure end having the same diameter as the low pressure end. Therefore, the length of the gas rotary sealing device is increased in the vertical direction, the height of the sealing device is increased by increasing the length of the gas rotary sealing device, but the too high arrangement of the flywheel can be caused by the too high arrangement of the flywheel, the overall stability is poor and the like due to the too high gravity center of the flywheel, so that the gas rotary sealing device cannot be too long, the higher air pressure cannot be sealed without long, the higher air pressure cannot be sealed, and the lifting force of the air cushion pad is small.
Such as labyrinth seals, are about 1 meter long when the air pressure in the air cushion is 0.8 mpa, and have been difficult to arrange in a vertical flywheel.
Thirdly, the best balance of achieving good sealing effect and low cost cannot be achieved. The patent gas rotary seal device uses only one gas rotary seal device, and the high pressure end and the low pressure end have the same diameter. However, each gas rotary sealing device has the advantages and disadvantages that the best effect cannot be obtained by using the gas rotary sealing device alone, such as floating ring sealing, and the diameter cannot be excessively large and the gas rotary sealing device is expensive. The labyrinth seal, although inexpensive, can also be quite large in diameter, but is too large in air leakage, so that the optimum balance of good sealing effect and low cost cannot be achieved by using the labyrinth seal alone.
The patent uses the air cushion with the diameter of less than 1 meter and the air pressure of less than 0.3 megapascals in the range of combining the factors of price, air leakage, length and the like. While the air pressure in the air cushion can be increased by about 30 tons per square meter at 0.3 megapascals. So that 0.3 mpa acts on a circular air cushion of 1m diameter, the lifting capacity is only about 23.5 tons.
Disclosure of Invention
The invention aims at solving the following defects in the prior art: 1. the diameter of the air cushion is only the same as that of the gas rotary sealing device, so that the diameter of the air cushion is limited by the diameter of the gas rotary sealing device, and if the diameter of the gas rotary sealing device cannot be too large, the diameter of the air cushion cannot be too large, so that the lifting force of the air cushion is limited; 2. the invention solves the technical problems that how to realize the rotor air cushion component and the air cushion flywheel energy storage device which can not only meet the requirement that the air cushion area is not influenced by the sealing device, but also can not cause the arrangement of the air cushion flywheel energy storage device which is too high when the air pressure is sealed.
The technical scheme adopted by the invention is as follows: the utility model provides an air cushion flywheel energy memory, including flywheel room body, and the flywheel that rotor and rotor shaft constitute, the flywheel rotates and installs in flywheel room body, still include rotor air cushion subassembly, rotor air cushion subassembly includes the air cushion wall and at the fixed supporting disk of rotor bottom, the supporting disk bottom is fixed with the backing plate, the backing plate diameter is greater than the supporting disk, the air cushion wall top is fixed with the sealing disk, the air cushion wall bottom is sealed, open at the middle part of sealing disk has the through-hole, the supporting disk is located inside the through-hole, the backing plate is located the below of sealing disk, be equipped with second gaseous rotary seal device between the bottom surface of sealing disk and the top surface of backing plate, the position between the backing plate outside and the air cushion wall is the high-pressure side, the position between the supporting disk outside and the inner wall of through-hole is the low-pressure side, backing plate lower terminal surface and air cushion wall form the air cushion room.
A further technical solution consists in that a third gas rotary sealing device is arranged at the low pressure side.
The further technical scheme is that a first upper partition wall with a cylindrical structure is arranged on the inner side of the through hole of the sealing disc, and the third gas rotary sealing device is arranged between the outer side of the supporting disc and the first upper partition wall.
A further technical solution consists in that a first gas rotary sealing device is arranged at the high pressure side.
The further technical scheme is that a first lower partition wall with a cylindrical structure is arranged on the outer side of the lifting disk, and the first gas rotary sealing device is arranged between the inner side wall of the air cushion wall and the first lower partition wall.
The further technical scheme is that the second lower partition wall with a cylindrical structure is arranged on the upper end face of the lifting plate, the second upper partition wall with a cylindrical structure is arranged on the lower end face of the sealing plate, the second lower partition wall and the second upper partition wall are arranged in a staggered mode, and the second gas rotary sealing device is arranged between the second upper partition wall and the second lower partition wall.
The further technical proposal is that a gap between the second lower partition wall and the lower end surface of the sealing disk forms a first gas flow passage, and a gap between the second upper partition wall and the upper end surface of the lifting disk forms a second gas flow passage.
The further technical scheme is that the air cushion wall is fixed at the inner lower part of the flywheel chamber body, the bottom of the air cushion wall is sealed through the inner bottom surface of the flywheel chamber body, and the lower end surface of the lifting disk, the air cushion wall and the inner bottom surface of the flywheel chamber body enclose an air cushion chamber.
The further technical scheme is that the lower part of the rotor shaft is rotationally connected with a flywheel synchronous and stable sealing frame, an air cushion wall is arranged on the flywheel synchronous and stable sealing frame, and the air cushion wall is connected with the flywheel chamber body through a movable sealing piece.
The further technical scheme is that the air cushion wall is a lower body of the flywheel chamber body, and the lower end surface of the lifting disk and the lower body of the flywheel chamber body enclose an air cushion chamber.
In summary, due to the adoption of the technical scheme, the beneficial effects of the invention are as follows:
The invention provides a flywheel energy storage device with a large-diameter high-pressure air cushion, which aims to solve the problems that the diameter of an air cushion is not too large, the air pressure in the air cushion is not too high, and the optimal balance with good sealing effect and low cost cannot be achieved. The invention integrates a plurality of innovations in the field of air cushion flywheel energy storage for integral use, (1) the upper part of an air cushion is a lifting disk, the upper part of the lifting disk is a supporting disk with the diameter far smaller than that of the lifting disk, the lifting force of the air cushion is acted on the lifting disk firstly, and then the lifting disk transmits the force to a rotor; (2) The second gas rotary sealing device is arranged on the upper end surface of the lifting disk; (3) The diameter of the second gas rotary seal device near the high pressure side is much larger than the diameter near the low pressure side. (4) The second gas rotary sealing device is one or a combination of more than two existing seals.
The beneficial effects brought by the mode are as follows:
1. The diameter of the air cushion can be large, and the heavier flywheel can be lifted. The upper part of the air cushion is a large-diameter lifting disk, the upper part of the lifting disk is a small-diameter supporting disk, and the second gas rotary sealing device is arranged on the upper end surface of the lifting disk; the diameter of the second gas rotary seal device near the high pressure side is much larger than the diameter near the low pressure side. Therefore, the seal which is not limited by the diameter is arranged at the position close to the high pressure side, so that the diameter of the seal close to the high pressure side can be large, and the diameter of the lifting disk can be large, namely the diameter of the air cushion can be large; the diameter of the supporting disc at the upper part of the lifting disc is small, so that the sealing with limited diameter and good sealing effect can be placed at a position close to the low pressure side; for example, a long but inexpensive labyrinth seal is used to throttle down the pressure at a location near the high pressure side and a small diameter floating ring seal is used at a location near the low pressure side, which is not expensive due to the small diameter, small pressure differential. The sealing effect is poor at the position close to the high pressure side, but the sealing effect is good at the position close to the low pressure side, so that the whole sealing effect of the second gas rotary sealing device is good; and because the second gas rotary sealing device is arranged on the upper end surface of the lifting disk, the second gas rotary sealing device does not occupy the air cushion area, and thus, a heavy flywheel can be lifted by using a large-diameter air cushion.
2. The air pressure in the air cushion can be very high, and the heavier flywheel can be lifted. Since the second gas rotary seal device is arranged on the upper end face of the gasket, the diameter of the second gas rotary seal device at a position close to the high pressure side is far larger than that at a position close to the low pressure side. Therefore, the whole length of the second gas rotary sealing device is in the horizontal direction, the height of the sealing structure is not increased even if the length of the second gas rotary sealing device is increased, and the arrangement of the flywheel is not affected even if the length of the second gas rotary sealing device is long, so that the heavier flywheel can be lifted by sealing high air pressure by using the long second gas rotary sealing device.
3. The best balance of good sealing effect and low cost is realized. Because the first gas rotary sealing device, the second gas rotary sealing device and the third gas rotary sealing device adopt a combination scheme of a plurality of seals, the diameter of the first gas rotary sealing device at the high pressure side is far larger than that of the third gas rotary sealing device at the low pressure side. The high-pressure side can thus be throttled down with a long, but inexpensive seal, and the low-pressure side can be sealed with a small diameter, so that the sealing price is not high due to the small diameter and the small pressure difference. The sealing effect of the high-pressure side is poor, but the sealing effect of the low-pressure side is good, so that the sealing effect of the whole gas rotary sealing device is good, and the best balance between the sealing effect and economy can be achieved.
Drawings
FIG. 1 is a schematic diagram of an air cushion flywheel energy storage device according to the present invention;
FIG. 2 is an enlarged view of a portion of the invention at I in FIG. 1;
FIG. 3 is a schematic structural diagram of an air-cushion flywheel energy storage device according to embodiment 5 of the present invention;
FIG. 4 is an enlarged view of a portion of the invention at II in FIG. 3;
fig. 5 is a schematic structural diagram of an air cushion flywheel energy storage device according to embodiment 6 of the present invention;
FIG. 6 is a schematic view of another support plate and lift plate according to the present invention;
FIG. 7 is a schematic view of a second alternative support plate and lift plate of the present invention, and employing other seals;
FIG. 8 is a schematic view of a third alternative support plate and lift plate of the present invention, and employing other seals.
Detailed Description
The present invention will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present invention more apparent.
As shown in fig. 1 to 8, embodiment 1: the utility model provides an air cushion flywheel energy memory, including flywheel room body 2, and the flywheel 12 that rotor 120 and rotor shaft 121 constitute, flywheel 12 rotates and installs in flywheel room body 2, still include rotor air cushion subassembly, rotor air cushion subassembly includes air cushion wall 5 and the supporting disk 8 fixed in rotor 120 bottom, supporting disk 8 bottom is fixed with the backing plate 9, backing plate 9 diameter is greater than supporting disk 8, air cushion wall 5 top is fixed with sealing disk 6, air cushion wall 5 bottom seals, open at sealing disk 6's middle part has the through-hole, supporting disk 8 is located inside the through-hole, backing plate 9 is located sealing disk 6's below, be equipped with second gas rotary seal 187 between sealing disk 6's bottom surface and the top surface of backing plate 9, the position between backing plate 9 outside and air cushion wall 5 is the high-pressure side, the position between supporting disk 8 outside and the inner wall of through-hole is the low-pressure side, backing plate 9 lower terminal surface and air cushion wall 5 form air cushion room 15.
When the flywheel is used, the ground is provided with a circular well, the well wall is hardened, the upper part of the circular well is provided with a circular metal flywheel well cover 13, and the circular well and the upper flywheel well cover 13 form the flywheel chamber body 2. The circular underground part is provided with a disc-shaped backing plate 3, and a thrust bearing 10 and a radial mechanical bearing 7 are arranged on the backing plate 3. Intermediate the rotor 120 is a rotor shaft 121, the rotor 120 and the rotor shaft 121 constituting the flywheel 12. The lower part of the rotor shaft 121 is mounted on the bottom of the flywheel housing body 2 through a thrust bearing 10 and a radial mechanical bearing 7. The rotor 120 is externally provided with the fairing 14 which is made of plastic or metal materials and has a smooth surface, and the fairing 14 can reduce the wind resistance of the rotor 120 when the rotor 120 rotates. The rotor 120 is formed by stacking 3 metal plates together, so that the rotor 120 can be conveniently transported and installed when being large, and the lowest rotor 120 is a small-diameter metal plate which is easy to process. The flywheel manhole cover 13 is provided with a motor/generator 11 and a radial mechanical bearing 7. The rotor shaft 121 passes through the motor/generator 11 and the radial mechanical bearing 7. The upper end of the rotor shaft 121 is mounted on the flywheel manhole cover 13 through a radial mechanical bearing 7. The motor/generator 11 rotates the rotor 120 through the rotor shaft 121. Four adjustable lifting mechanisms 4 are symmetrically arranged between the backing plate 3 and the rotor 120, and the adjustable lifting devices 4 can be telescopic supporting devices such as jacks. The air cushion wall 5 is fixed at the inner lower part of the flywheel chamber body 2, the bottom of the air cushion wall 5 is sealed by the inner bottom surface of the flywheel chamber body 2, and the air cushion chamber 15 is enclosed by the lower end surface of the lifting disk 9, the air cushion wall 5 and the inner bottom surface of the flywheel chamber body 2.
The second gas rotary seal 187 is any seal that can be used for movable rotation in the prior art, and the second gas rotary seal 187 may be any one or a combination of two or more of a labyrinth seal 182, a honeycomb seal 183, a brush seal 181, a floating ring seal 180, and a contact tooth seal 184 (refer to a seal described in the document of ZL 02128382.6).
The second gas rotary seal 187 is preferably a labyrinth seal 182 at a position near the high pressure side and a floating ring seal 180 at a position near the low pressure side of the second gas rotary seal 187 only when the second gas rotary seal 187 is provided.
The purpose that the air cushion diameter can be large and the heavier flywheel 12 can be lifted can be achieved by adopting the embodiment. Since the upper part of the air cushion is a large-diameter lifting disk 9, the upper part of the lifting disk 9 is a small-diameter supporting disk 8, and the second gas rotary sealing device 187 is arranged on the upper end surface of the lifting disk 9; the diameter of the labyrinth seal 182 of the second gas rotary seal 187 near the high pressure side is much larger than the diameter of the floating ring seal 180 near the low pressure side. Therefore, the seal which is not limited by the diameter is arranged at the position close to the high pressure side, so that the diameter of the seal close to the high pressure side can be large, and the diameter of the lifting disk 9 can be large, namely the diameter of the air cushion can be large; because the diameter of the supporting disk 8 at the upper part of the lifting disk 9 is small, the floating ring type seal 180 with limited diameter and good sealing effect is placed at a position close to the low pressure side; throttling and depressurizing is performed by using a long and cheap labyrinth seal 182 at a position close to the high pressure side, and a floating ring seal 180 with a small diameter is used at a position close to the low pressure side, so that the floating ring seal 180 is low in price due to the small diameter and small pressure difference; while the labyrinth seal 182 at a position close to the high pressure side has a poor sealing effect, the floating ring seal 180 having a good sealing effect is used at a position close to the low pressure side, so that the sealing effect of the second gas rotary seal device 187 as a whole is good; and since the second gas rotary seal 187 is disposed at the upper end surface of the jacking plate 9, the second gas rotary seal 187 does not occupy an air cushion area, so that the heavy flywheel 12 can be jacked up using a large-diameter air cushion.
The purpose that the air cushion diameter can be large and the heavier flywheel 12 can be lifted can be achieved by adopting the embodiment. Since the second gas rotary seal 187 is disposed at the upper end face of the gasket 9, the diameter of the second gas rotary seal 187 at the position near the high pressure side is much larger than the diameter at the position near the low pressure side. The entire length of the second gas rotary seal device 187 is in the horizontal direction, and the height of the seal structure is not increased even if the length of the second gas rotary seal device 187 is increased, and the arrangement of the flywheel 12 is not affected even if the length of the second gas rotary seal device 187 is long, so that the heavier flywheel 12 can be lifted by sealing a high gas pressure with the long second gas rotary seal device 187.
Example 2 based on example 1: the second lower partition wall 32 having a cylindrical structure is mounted on the upper end surface of the lifting disk 9, the second upper partition wall 31 having a cylindrical structure is mounted on the lower end surface of the sealing disk 6, the second lower partition wall 32 and the second upper partition wall 31 are arranged alternately, and the second gas rotary sealing device 187 is disposed between the second upper partition wall 31 and the second lower partition wall 32. The gap between the second lower partition wall 32 and the lower end surface of the sealing disk 6 forms a first gas flow passage, and the gap between the second upper partition wall 31 and the upper end surface of the jacking disk 9 forms a second gas flow passage.
When mounted, various sealing elements are fixed to the air cushion wall 5 and the sealing disk 6 at the factory. The second upper partition 31 is inserted into a groove reserved on the sealing disk 6, and then the second upper partition 31 is fixed to the sealing disk 6 by screws through the sealing disk 6. The second lower partition wall 32 is placed in the groove of the saucer 9 and is fixed to the saucer 9 with screws at the second lower partition wall 32. The air cushion wall 5, the thrust bearing 10, the radial mechanical bearing 7 are fixed on the backing plate 3, and the air tube passes through the air cushion wall 5. The motor/generator 11 and radial mechanical bearings 7 are mounted on the flywheel manhole cover 13. The smallest diameter rotor 120, support disk 8, sealing disk 6, and lifting disk 9 are passed through the rotor shaft 121 in this order. The rotor 120, the support disc 8 and the rotor shaft 121 with the smallest diameter are fixed together, and the rotor shaft 121 is mounted on the backing plate 3 through the radial mechanical bearing 7 and the thrust bearing 10. A sealing disk 6 is fixed to the upper part of the air cushion wall 5. The lifting disk 9, the support disk 8, and the rotor shaft 121 are fixed together. The adjustable lifting mechanism 4 is placed between the smallest diameter rotor 120 and the backing plate 3. The parts of the whole set of device are fixed by a temporary fixing device in a factory and then transported to the site, and are arranged at the center of the bottom of the circular shaft. Two large diameter rotors 120 are hoisted on site over the smallest diameter rotor 120 and the fairing 14 is mounted outside the rotor 120. And then the flywheel well cover 13 is hoisted on the upper part of the flywheel shaft 121, the air compressor 1 is placed on the flywheel well cover 13, and an air pipe penetrates through the flywheel well cover 13 and is inserted into the air compressor 1. And finally, the whole set of device can work normally after the temporary fixing device is removed.
The gap between the second upper partition wall 31 and the upper end surface of the gasket 9 serves as a second gas flow path, and the gap between the second lower partition wall 32 and the lower end surface of the sealing disk 6 serves as a first gas flow path, and the gap is generally between about 0.5mm and 0.8 mm. Such that the multiple labyrinth seals 182 communicate with each other. After the gas is throttled and depressurized by the upper labyrinth seal 182, the gas turns to enter the lower labyrinth seal 182 for throttling and depressurization, and then turns to enter the lower labyrinth seal 182 again, so that a scheme of multi-layer seal series connection is formed.
Example 3: based on example 1 or example 2: a third gas rotary seal 188 is provided at the low pressure side.
The third gas rotary seal device 188 may be any seal capable of moving and rotating in the prior art, and the third gas rotary seal device 188 may be any one or a combination of two or more of a labyrinth seal 182, a honeycomb seal 183, a brush seal 181, a floating ring seal 180, and a contact tooth seal 184 (refer to a seal described in the document of ZL 02128382.6).
In this embodiment, the third gas rotary seal device 188 is preferably configured as a labyrinth seal 182, a brush seal 181, and a floating ring seal 180 in this order from bottom to top, and the floating ring seal 180 is preferably a carbon ring seal. The second gas rotary seal 187 is a labyrinth seal 182.
The purpose that the air cushion diameter can be large and the heavier flywheel 12 can be lifted can be achieved by adopting the embodiment. Since the upper part of the air cushion is a large-diameter lifting disk 9, the upper part of the lifting disk 9 is a small-diameter supporting disk 8, and the second gas rotary sealing device 187 is arranged on the upper end surface of the lifting disk 9; the diameter of the second gas rotary seal 187 near the high pressure side is much greater than the diameter of the third gas rotary seal 188 on the low pressure side. The diameter-unrestricted seal is thus placed in the position of the second gas rotary seal 187 close to the high-pressure side, so that the diameter of the seal of the second gas rotary seal 187 close to the high-pressure side can be large, and the diameter of the lifting disk 9 can be large, i.e. the diameter of the gas cushion can be large; since the diameter of the support plate 8 at the upper part of the lifting plate 9 is small, the third gas rotary seal device 188 with limited diameter but good sealing effect is placed at the position of the low pressure side; the second gas rotary seal 187 is throttled down by a long but inexpensive labyrinth seal 182 as a whole, and the third gas rotary seal 188 is a small diameter floating ring seal 180, so that the floating ring seal 180 is inexpensive due to the small diameter and small pressure differential; although the second gas rotary seal device 187 has a poor sealing effect, the third gas rotary seal device 188 has a good sealing effect, so that the overall sealing effect is good; and since the second gas rotary seal 187 is disposed at the upper end surface of the jacking plate 9, the second gas rotary seal 187 does not occupy an air cushion area, so that the heavy flywheel 12 can be jacked up using a large-diameter air cushion.
The purpose of the air cushion with a large diameter and capable of lifting the heavier flywheel 12 can also be achieved by adopting the embodiment. Since the second gas rotary seal 187 is disposed on the upper end surface of the gasket 9, the diameter of the second gas rotary seal 187 at a position near the high pressure side is much larger than that of the third gas rotary seal 188. The entire length of the second gas rotary seal device 187 is in the horizontal direction, and the height of the seal structure is not increased even if the length of the second gas rotary seal device 187 is increased, and the arrangement of the flywheel 12 is not affected even if the length of the second gas rotary seal device 187 is long, so that the heavier flywheel 12 can be lifted by sealing the very high gas pressure with the very long second gas rotary seal device 187.
Example 4: based on example 1: a first gas rotary seal 186 is provided at the high pressure side.
The first gas rotary seal device 186 may be any seal capable of being used for movable rotation in the prior art, and the first gas rotary seal device 186 may be any one or a combination of two or more of a labyrinth seal 182, a honeycomb seal 183, a brush seal 181, a floating ring seal 180, and a contact tooth seal 184 (refer to a seal described in the document of ZL 02128382.6).
In this embodiment, the third gas rotary seal device 188 is preferably configured from the top to the labyrinth seal 182, the brush seal 181 and the floating ring seal 180, and the floating ring seal 180 is preferably a carbon ring seal. The second gas rotary seal 187 is a labyrinth seal 182. The first gas rotary seal device 186 is a labyrinth seal 182.
The first lower partition wall 33 having a cylindrical structure is installed at the outer side of the cushion-up plate 9, and the first gas rotary seal device 186 is provided between the inner side wall of the cushion-up plate 5 and the first lower partition wall 33. The first lower partition 33 is used to mount a first gas rotary seal 186.
The first upper partition wall 30 having a cylindrical structure is mounted inside the through hole of the sealing disk 6, and the third gas rotary seal device 188 is disposed between the outside of the support disk 8 and the first upper partition wall 30, and the first upper partition wall 30 is used for mounting the third gas rotary seal device 188.
The purpose that the air cushion diameter can be large and the heavier flywheel 12 can be lifted can be achieved by adopting the embodiment. Since the upper part of the air cushion is a large-diameter lifting disk 9, the upper part of the lifting disk 9 is a small-diameter supporting disk 8, and the second gas rotary sealing device 187 is arranged on the upper end surface of the lifting disk 9; the diameter of the first gas rotary seal 186 at the high pressure side position is much larger than the diameter of the third gas rotary seal 188 at the low pressure side position. Therefore, the seal which is not limited by the diameter is placed near the high pressure side, so that the diameter of the corresponding first gas rotary seal device 186 at the high pressure side can be large, and the diameter of the lifting disk 9 can be large, namely the diameter of the air cushion can be large; since the diameter of the support plate 8 at the upper part of the lifting plate 9 is small, the third gas rotary seal device 188 with limited diameter but good sealing effect can be placed at the position of the low pressure side; the first gas rotary seal device 186 and the second gas rotary seal device 187 are throttled and depressurized by a long but cheap labyrinth seal 182, and the third gas rotary seal device 188 at the low pressure side uses a floating ring seal 180 with a small diameter, so that the sealing price is not high due to the small diameter and small pressure difference; although the sealing effect of the first gas rotary seal device 186 and the second gas rotary seal device 187 is not good, the sealing effect of the third gas rotary seal device 188 is good, so the whole sealing effect is good; and since the second gas rotary seal 187 is disposed at the upper end surface of the jacking plate 9, the second gas rotary seal 187 does not occupy an air cushion area, so that the heavy flywheel 12 can be jacked up using a large-diameter air cushion.
The purpose of the air cushion with a large diameter and capable of lifting the heavier flywheel 12 can also be achieved by adopting the embodiment. Since the second gas rotary seal 187 is disposed at the upper end surface of the saucer 9 and the entire length of the second gas rotary seal 187 is in the horizontal direction, the height of the seal structure is not increased even if the length of the second gas rotary seal 187 is increased, and the arrangement of the flywheel 12 is not affected even if the length of the second gas rotary seal 187 is long, so that the heavier flywheel 12 can be elevated by sealing a high gas pressure with a long second gas rotary seal 187.
For example, the lifting disk 9 has a diameter of 2 m, i.e. the air cushion has a diameter of 2 m, the outer layer is throttled and depressurized by 5 labyrinth seals 182 having a height of 20 cm, the support disk 8 has a diameter of 0.5m, and the inner layer is sealed by a carbocycle having a diameter of 0.5m, the air pressure in the air cushion being 0.8 mpa. The scheme is characterized in that the carbocycle seal is used on the low-pressure side, the diameter of the carbocycle seal is small, the front end of the carbocycle seal is throttled and depressurized by using the multi-layer labyrinth seal 182, the pressure difference between two sides of the carbocycle seal is small and is lower than 0.1 megapascal, so that the venting quantity is negligible, the price of the carbocycle seal is low, and the total price of the carbocycle seal and the labyrinth seal 182 is only about 7 ten thousand. The air pressure in the air cushion can raise the weight of 80 tons per square meter at 0.8 megapascals, and the air cushion can raise the flywheel 12 with the weight of 251 tons when the 0.8 megapascals acts on the air cushion with the diameter of 2 meters.
Because the invention has very high lifting space, a larger area of air cushion can be made, and a higher pressure air cushion, such as 3 meters in diameter of the lifting disk 9 and 3 meters in diameter of the air cushion, is used as the outer layer, is used as the labyrinth seal 182, is used as the supporting disk 8, is used as the inner layer, is used as the carbocycle seal with the diameter of 0.8 meter, and the price of the carbocycle seal plus the labyrinth seal 182 is only 10 tens of thousands yuan. The air pressure in the air cushion is 1.3 megapascals, 130 tons of weight can be lifted per square meter when the air pressure in the air cushion is 1.3 megapascals, and the air cushion can lift 918 tons of flywheel 12 when the air cushion with the diameter of 3 meters acts on the air cushion. It can be seen that the lifting force of the present invention has brought about a significant lifting in the order of hundreds of tons or even thousands of tons with respect to the patent CN101788034 a.
Example 5: on the basis of embodiment 1, the lower part of the rotor shaft 121 is rotatably connected with a flywheel synchronous and stable sealing frame 23, the air cushion wall 5 is arranged on the flywheel synchronous and stable sealing frame 23, and the air cushion wall 5 is connected with the flywheel chamber body 2 through a movable sealing piece.
The ground has a circular well in which a sealed flywheel housing 19 is placed as the flywheel housing body 2. Radial mechanical bearings 7 are mounted on the upper part and the bottom of the flywheel chamber shell 19, and thrust bearings 10 are mounted on the bottom of the flywheel chamber shell 19. Intermediate the rotor 120 is a rotor shaft 121, the rotor 120 and the rotor shaft 121 constituting the flywheel 12. The lower part of the rotor shaft 121 is mounted on the flywheel housing 19 through the thrust bearing 10 and the radial mechanical bearing 7, that is, the lower part of the rotor shaft 121 is mounted on the bottom of the flywheel housing body 2 through the thrust bearing 10 and the radial mechanical bearing 7. The rotor 120 is externally mounted with a cowling 14 made of plastic or metal material and having a smooth surface, and the flywheel housing 19 is mounted with the motor/generator 11 at an upper portion thereof, and the rotor shaft 121 passes through the motor/generator 11. The motor/generator 11 rotates the rotor 120 through the rotor shaft 121. The upper end of the rotor shaft 121 is mounted to the upper portion of the flywheel housing 19 through a radial mechanical bearing 7. Four adjustable lifting mechanisms 4 are symmetrically arranged between the rotor 120 and the bottom of the flywheel housing 19.
The lower part of the rotor shaft 121 is provided with a joint bearing 22, and the flywheel synchronous and stable sealing frame 23 is arranged on the joint bearing 22. The flywheel synchronous and stable sealing frame 23 has basically the same principle and structure as the flywheel synchronous and stable sealing frame in the patent CN116292762B, and the movable sealing piece is an O-shaped sealing ring 20 or a flexible sealing piece 18, and the air cushion wall 5 is connected with the flywheel chamber shell 19 through the O-shaped sealing ring 20 or the flexible sealing piece 18. The flywheel synchronous and stable sealing frame 23 does not rotate along with the flywheel 12, and the flywheel synchronous and stable sealing frame 23 and the flywheel 12 synchronously vibrate, so that the air cushion wall 5 and the flywheel 12 synchronously vibrate and do not rotate along with the flywheel 12.
Example 6: on the basis of embodiment 1, the air cushion wall 5 is a lower body of the flywheel chamber body 2, and the lower end surface of the lifting disk 9 and the lower body of the flywheel chamber body 2 enclose an air cushion chamber 15.
The flywheel housing 19 on the ground serves as the flywheel housing body 2. Radial electromagnetic bearings 26 are mounted on the top and bottom of the flywheel housing 19. Intermediate the rotor 120 is a rotor shaft 121, the rotor 120 and the rotor shaft 121 constituting the flywheel 12. The lower end of the rotor shaft 121 is mounted on the flywheel housing 19 through a radial electromagnetic bearing 26, an axial electromagnetic bearing 25 is mounted between the upper part of the rotor 120 and the flywheel housing 19, a motor/generator 11 is mounted above the axial electromagnetic bearing 25, and the rotor shaft 121 passes through the motor/generator 11. The motor/generator 11 rotates the rotor 120 through the rotor shaft 121. The upper end of the rotor shaft 121 is mounted to the flywheel housing 19 by a radial electromagnetic bearing 26.
The embodiment is suitable for a small air cushion flywheel energy storage device. Because of the limitation of installation sites and the need of small air cushion flywheel energy storage devices in some sites, the invention can be used not only on large-sized flywheels but also in small-sized flywheel energy storage devices, so the air cushion sealing device has lower height and lower manufacturing cost by adopting the scheme in the embodiment.
When the diameter of the lifting disk 9 is 1.3 m, the effective lifting air cushion area is 1.32 square m, and the diameter of the supporting disk 8 is 0.3 m, so that the air pressure in the air cushion is 0.13 megapascal, and according to the air pressure in the air cushion of 0.13 megapascal, the weight of 13 tons can be lifted per square m, the lifting weight per unit area is multiplied by the air cushion area, and the air cushion can lift the flywheel 12 with the weight of 17 tons, and the cost is about within 3 ten thousand.
The air compressor 1 is installed outside the flywheel chamber housing 19, and an air pipe of the air compressor 1 passes through the flywheel chamber housing 19 and the air cushion wall 5 and then is communicated with the air cushion chamber 15.
In use, the air compressor 1 inflates the air cushion chamber 15 to form an air cushion, and maintains the air pressure in the air cushion within a set range, so that most of the weight of the flywheel 12 is borne by the air cushion, and a small part of the weight is borne by the axial electromagnetic bearing 25. The motor/generator 11 stores or outputs energy by controlling the rotation of the flywheel 12.
The schematic of the invention is simply illustrative of the principle and thus the air compressor 1 is represented by a square only and the bearings are also represented by a square. And the structures of the support tray 8, the jacking tray 9, the air cushion wall 5, the sealing tray 6, the first gas rotary seal 186, the second gas rotary seal 187, and the third gas rotary seal 188 are shown for clarity.
The supporting disk 8, the lifting disk 9, the air cushion wall 5 and the sealing disk 6 in the invention can be disk-shaped with various shapes, disk-shaped with edge folded, inclined disk-shaped, disk-shaped with a circular concave table in the middle, and the like.
In the invention, the air cushion wall 5, the first upper partition wall 30, the first lower partition wall 33, the second upper partition wall 31 and the second lower partition wall 32 are cylindrical with various shapes, can be cylindrical with folded edges, and can also be cylindrical with arc, so that the air cushion wall 5 has better cylindrical bearing capacity like a drum, and the air cushion wall 5 can be thinner and lighter, but is inconvenient to process.
In actual manufacture, the toothed labyrinth seal 182 may be directly mounted on the support disk 8, the lifting disk 9, the air cushion wall 5, the sealing disk 6, the first upper partition wall 30, the first lower partition wall 33, the second upper partition wall 31, and the second lower partition wall 32, or teeth of the labyrinth seal 182 may be directly machined on the above components.
The support plate 8, the lifting plate 9, the air cushion wall 5, the sealing plate 6, the first upper partition wall 30, the first lower partition wall 33, the second upper partition wall 31, and the second lower partition wall 32 described in the present invention are descriptions of shapes, functions, and positions where these structures are necessary to perform functions, and are not limited to specific components.
In actual manufacturing, a plurality of functions can be realized by one component, for example, a round boss can be processed at the bottom of the rotor 120, and can play a role of the supporting disc 8, so that the round boss is the supporting disc 8; the upper part of the lifting disc can be provided with a round boss, the round boss at the upper part is a supporting disc 8, and the round boss at the upper part is a lifting disc 9; the barrel-shaped part can be integrally punched or machined, and a hole is formed in the barrel bottom, so that after the barrel-shaped part is turned over, the barrel bottom is the sealing disc 6, and the barrel wall is the air cushion wall 5; it is also possible to machine a cylindrical wall on the disc, such that the disc is the lifting disc 9 or the sealing disc 6, and the cylindrical wall is the first upper partition wall 30, the first lower partition wall 33, the second upper partition wall 31 or the second lower partition wall 32.
In actual manufacture, one functional component can be split to form a plurality of components, for example, a rotor shaft 121 is sleeved with a shaft sleeve, a disc is sleeved outside the shaft sleeve, and then the shaft sleeve and the outer disc are fixed, and the shaft sleeve and the outer disc are two components but are equivalent to 1 supporting disc 8, so that the shaft sleeve and the outer disc can be regarded as the supporting disc 8; small circular bosses can be processed at the bottom of the rotor 120, through holes are processed in the middle of the disc with the circular bosses processed at the upper part, the diameter of the through holes is the same as that of the small bosses at the bottom of the rotor 120, then the disc is inserted into the bottom of the rotor 120, and thus the small bosses at the bottom of the rotor 120 and the circular bosses at the upper part of the disc jointly form the supporting disc 8, and the disc serves as the lifting disc 9.
Many alternatives and modifications are possible, including minor variations in basic shape, minor additions of parts, etc., but the basic structure and function are not materially different from the present invention and are intended to fall within the scope of the invention.
Many parts of the invention can be split-processed, such as the air cushion wall 5, the first upper partition wall 30, the first lower partition wall 33, the second upper partition wall 31, the second lower partition wall 32, sealing parts and the like, and then the inner layer and the outer layer are assembled and fixed together layer by layer, and can be in a ladder-type structure for installation convenience.
The carbocycle seal is one of the floating ring seals 180, and various floating ring seal 180 devices can be used in practice, for example, the floating ring seal 180 can be made of metal, and the floating ring seal 180 can be an oil film seal with an automatic oil supply system.
The air compressor 1 suggests to use a common piston type air compressor with an air storage tank, so as to reduce the cost, the air outlet of the air compressor is directly connected into an air cushion, and the air pressure is automatically controlled by the air compressor 1. The air pressure in the air cushion can be directly controlled without an air storage tank. When the air cushion is not in operation, the regulating valve can be controlled to discharge air in the air cushion. Further, the air pressure can also be controlled by a special complex air pressure control system, such as a computer, an air pressure sensor in the air cushion, an air inlet valve, an air outlet valve, a vacuum pump 24 and an air compressor 1. The computer controls the air compressor 1 and the air inlet valve to work by analyzing the data sampled by the pressure sensor, so that the air pressure in the air cushion is ensured to be within a set range, the special condition can control the exhaust valve to exhaust emergently, meanwhile, the flywheel 12 is braked, the adjustable lifting device 4 lifts and supports the flywheel 12, the pressure controller is also arranged outside the air cushion, and the computer simultaneously controls the vacuum pump 24 to work, so that the air pressure inside and outside the air cushion is also kept within the set range.
The flywheel 12 can also be provided with a brake device, and a safety valve pressure relief device and the like are also arranged in the air cushion.
The foregoing is only illustrative of the preferred embodiments of the present invention.
Claims (10)
1. The utility model provides an air cushion flywheel energy memory, includes flywheel room body (2) to and flywheel (12) that rotor (120) and rotor shaft (121) constitute, flywheel (12) rotate and install in flywheel room body (2), its characterized in that: still include rotor air cushion assembly, rotor air cushion assembly includes air cushion wall (5) and fixed supporting disk (8) in rotor (120) bottom, supporting disk (8) bottom is fixed with backing plate (9), backing plate (9) diameter is greater than supporting disk (8), air cushion wall (5) top is fixed with sealing disk (6), air cushion wall (5) bottom seal, open at the middle part of sealing disk (6) has the through-hole, supporting disk (8) are located inside the through-hole, backing plate (9) are located the below of sealing disk (6), be equipped with second gaseous rotary seal device (187) between the bottom surface of sealing disk (6) and the top surface of backing plate (9), the position between backing plate (9) outside and air cushion wall (5) is the high-pressure side, the position between the inner wall of supporting disk (8) outside and through-hole is the low-pressure side, the terminal surface forms air cushion chamber (15) with air cushion wall (5) under backing plate (9).
2. An air cushion flywheel energy storage device as defined in claim 1, wherein: a third gas rotary seal (188) is provided at the low pressure side.
3. An air cushion flywheel energy storage device as defined in claim 2, wherein: a first upper partition wall (30) with a cylindrical structure is arranged on the inner side of a through hole of the sealing disc (6), and the third gas rotary sealing device (188) is arranged between the outer side of the supporting disc (8) and the first upper partition wall (30).
4. An air cushion flywheel energy storage device as defined in claim 1, wherein: the second lower partition wall (32) with a cylindrical structure is arranged on the upper end face of the lifting disk (9), the second upper partition wall (31) with a cylindrical structure is arranged on the lower end face of the sealing disk (6), the second lower partition wall (32) and the second upper partition wall (31) are arranged in a staggered mode, and the second gas rotary sealing device (187) is arranged between the second upper partition wall (31) and the second lower partition wall (32).
5. The air cushion flywheel energy storage device of claim 4 wherein: a first gas flow passage is formed by a gap between the second lower partition wall (32) and the lower end surface of the sealing disc (6), and a second gas flow passage is formed by a gap between the second upper partition wall (31) and the upper end surface of the lifting disc (9).
6. An air cushion flywheel energy storage device as claimed in any one of claims 1-4 wherein: a first gas rotary seal (186) is provided at the high pressure side.
7. The air cushion flywheel energy storage device of claim 6, wherein: the outer side of the lifting disk (9) is provided with a first lower partition wall (33) in a cylindrical structure, and the first gas rotary sealing device (186) is arranged between the inner side wall of the air cushion wall (5) and the first lower partition wall (33).
8. An air cushion flywheel energy storage device as defined in claim 1, wherein: the air cushion wall (5) is fixed at the inner lower part of the flywheel chamber body (2), the bottom of the air cushion wall (5) is sealed through the inner bottom surface of the flywheel chamber body (2), and the air cushion chamber (15) is formed by surrounding the lower end surface of the lifting disk (9), the air cushion wall (5) and the inner bottom surface of the flywheel chamber body (2).
9. An air cushion flywheel energy storage device according to claim 1, characterized in that the lower part of the rotor shaft (121) is rotatably connected with a flywheel synchronous and stable sealing frame (23), the air cushion wall (5) is arranged on the flywheel synchronous and stable sealing frame (23), and the air cushion wall (5) is connected with the flywheel chamber body (2) through a movable sealing piece.
10. An air cushion flywheel energy storage device as defined in claim 1, wherein: the air cushion wall (5) is a lower body of the flywheel chamber body (2), and the lower end surface of the lifting disk (9) and the lower body of the flywheel chamber body (2) form an air cushion chamber (15).
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| CN202410323113.9A CN117927612B (en) | 2024-03-21 | 2024-03-21 | Air cushion flywheel energy storage device |
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| CN202410323113.9A CN117927612B (en) | 2024-03-21 | 2024-03-21 | Air cushion flywheel energy storage device |
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| CN117927612B CN117927612B (en) | 2024-05-17 |
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| GB201502252D0 (en) * | 2015-02-11 | 2015-03-25 | Flybrid Automotive Ltd | Carrier |
| CN116292762A (en) * | 2023-05-18 | 2023-06-23 | 惠宁睿能源科技开发(甘肃)有限公司 | Synchronous stable sealed frame type air cushion flywheel energy storage device |
| CN116518084A (en) * | 2023-05-22 | 2023-08-01 | 扬力集团股份有限公司 | Sealing device for two-way mechanism of wet clutch of press machine |
| CN220586050U (en) * | 2023-08-01 | 2024-03-12 | 愿景动力有限公司 | Self-cooling magnetic suspension flywheel energy storage rotor system |
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2024
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4112785A (en) * | 1976-07-01 | 1978-09-12 | Electric Power Research Institute, Inc. | Ring assembly for inertial energy storage rotor |
| CN101788034A (en) * | 2009-01-22 | 2010-07-28 | 杨金玉 | Flywheel floating on gas cushion |
| CN101873027A (en) * | 2009-04-27 | 2010-10-27 | 杨金玉 | Air cushion flywheel energy storage device |
| CN101710807A (en) * | 2009-12-15 | 2010-05-19 | 杨金玉 | Megawatt-level low-speed flywheel energy storing device |
| CN102570704A (en) * | 2011-11-30 | 2012-07-11 | 深圳市配天电机技术有限公司 | Collateral motor system, generator system and motor system |
| GB201502252D0 (en) * | 2015-02-11 | 2015-03-25 | Flybrid Automotive Ltd | Carrier |
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| CN220586050U (en) * | 2023-08-01 | 2024-03-12 | 愿景动力有限公司 | Self-cooling magnetic suspension flywheel energy storage rotor system |
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