CN117097068A - Gravity energy storage system based on mechanical coupling flywheel - Google Patents
Gravity energy storage system based on mechanical coupling flywheel Download PDFInfo
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- CN117097068A CN117097068A CN202311360559.0A CN202311360559A CN117097068A CN 117097068 A CN117097068 A CN 117097068A CN 202311360559 A CN202311360559 A CN 202311360559A CN 117097068 A CN117097068 A CN 117097068A
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- 238000004146 energy storage Methods 0.000 title claims abstract description 104
- 230000005484 gravity Effects 0.000 title claims abstract description 66
- 230000008878 coupling Effects 0.000 title claims description 12
- 238000010168 coupling process Methods 0.000 title claims description 12
- 238000005859 coupling reaction Methods 0.000 title claims description 12
- 230000009467 reduction Effects 0.000 claims abstract description 32
- 238000001514 detection method Methods 0.000 claims abstract description 10
- 239000000725 suspension Substances 0.000 claims description 4
- 230000003321 amplification Effects 0.000 claims description 2
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- 238000009499 grossing Methods 0.000 abstract description 3
- 230000001360 synchronised effect Effects 0.000 description 10
- 238000005516 engineering process Methods 0.000 description 8
- 238000010586 diagram Methods 0.000 description 6
- 238000000034 method Methods 0.000 description 5
- 230000008901 benefit Effects 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 230000033228 biological regulation Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 238000010248 power generation Methods 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 230000008093 supporting effect Effects 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 239000003990 capacitor Substances 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
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Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
- H02K7/02—Additional mass for increasing inertia, e.g. flywheels
- H02K7/025—Additional mass for increasing inertia, e.g. flywheels for power storage
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J15/00—Systems for storing electric energy
- H02J15/007—Systems for storing electric energy involving storage in the form of mechanical energy, e.g. fly-wheels
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K11/00—Structural association of dynamo-electric machines with electric components or with devices for shielding, monitoring or protection
- H02K11/20—Structural association of dynamo-electric machines with electric components or with devices for shielding, monitoring or protection for measuring, monitoring, testing, protecting or switching
- H02K11/21—Devices for sensing speed or position, or actuated thereby
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K11/00—Structural association of dynamo-electric machines with electric components or with devices for shielding, monitoring or protection
- H02K11/20—Structural association of dynamo-electric machines with electric components or with devices for shielding, monitoring or protection for measuring, monitoring, testing, protecting or switching
- H02K11/24—Devices for sensing torque, or actuated thereby
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
- H02K7/10—Structural association with clutches, brakes, gears, pulleys or mechanical starters
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
- H02K7/10—Structural association with clutches, brakes, gears, pulleys or mechanical starters
- H02K7/116—Structural association with clutches, brakes, gears, pulleys or mechanical starters with gears
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
- Supply And Distribution Of Alternating Current (AREA)
Abstract
The invention provides a gravity energy storage system based on a mechanically coupled flywheel, which belongs to the field of power grid energy storage such as gravity energy storage and flywheel energy storage, and comprises an inertial flywheel, a flywheel protection cover, a bearing fixed foundation, a bearing, a coupler, a motor, a device fixing device, an electromechanical detection device, a reduction gearbox, a lifting system and the like. The inertial flywheel is directly connected with an output shaft of the motor through a coupler, or is connected with the output shaft of the motor through a flywheel speed-increasing gearbox and the coupler; the inertial flywheel is fixed through a bearing fixed foundation, and a flywheel protection cover is arranged around the inertial flywheel; the front end of the motor is connected with an electromechanical detection device through a coupler; the output shaft of the electromechanical detection device is connected with the speed reduction gearbox through a coupler; the output shaft of the speed reduction gearbox is connected with the input shaft of the lifting system through a coupler. The gravity energy storage system of the mechanically coupled flywheel has the functions of peak shaving, frequency modulation, phase modulation, power smoothing and inertia support.
Description
Technical Field
The invention belongs to the field of power grid energy storage such as gravity energy storage and flywheel energy storage, and particularly relates to a gravity energy storage system based on a mechanically coupled flywheel.
Background
With the great development of renewable energy power generation, the field of electric energy storage is also accelerating the pace of technology update, wherein gravity energy storage and flywheel energy storage are widely focused in recent years. The mechanical energy storage is divided into power type mechanical energy storage and energy type mechanical energy storage. In general, gravity energy storage is energy type mechanical energy storage, and aims to reduce volatility and randomness of large-scale wind power and photovoltaic power generation, and the gravity energy storage can be used for peak shaving of a power grid and also can be used for time transfer of electric energy; flywheel energy storage is often used as power type mechanical energy storage because of its fast response speed.
However, due to various reasons such as power intermittence and power fluctuation caused by the heavy object replacement process of the gravity energy storage system, the gravity energy storage system needs to be added with power storage modes such as flywheel energy storage and super capacitor for power smoothing and standby in operation; in addition, due to the large amount of application of the power electronics technology, the inertia in the power system is difficult to meet the requirement, and the large-inertia synchronous camera based on the coupling flywheel is also applied to a certain degree in recent years.
Chinese patent application CN202210318924.0 discloses a comprehensive physical energy storage system and energy storage method of gravity combined with flywheel, wherein the gravity energy storage and flywheel energy storage adopt an electric coupling mode of sharing a dc bus, which can inhibit power fluctuation in the process of replacing heavy objects in the gravity energy storage system; chinese patent application CN202111205467.6 discloses a mechanical energy storage elevator system based on flywheel energy storage, this system adopts and tows the lifting means, connect car and balancing weight respectively at tow rope both ends, aim at storing the empty kinetic energy when going up and fully loaded down of elevator, improve the utilization ratio of energy, but because can not change the operating condition as main elevator function, can't be used for large-scale energy storage, in addition, flywheel energy storage system passes through the clutch and connects the motor, in order to retrieve the empty energy that goes up of elevator and fully loaded down, flywheel energy storage system does not work for a long time continuously, the clutch frequent action influences mechanical structure's stability and life-span. Chinese patent application CN202110693827.5 discloses a large inertia synchronous camera adjusting device using flywheel, the device couples the synchronous camera adjusting device with the large moment of inertia flywheel through gear set, and increases the inertia time constant of the synchronous camera adjusting device through the moment of inertia of the flywheel, and increases the inertia supporting capability of the power system, the patent does not relate to the gravity energy storage system; in addition, chinese patent applications CN201410797264.4 and CN201811611474.4 disclose a composite energy storage system in which compressed air is stored in a coupled flywheel, which utilizes the fast power regulation capability of the flywheel energy storage lifting system, nor does the patent relate to a gravity energy storage system.
In addition, the gravity energy storage system is generally used for power grid peak shaving, and the system working time in one day only accounts for about 1/6-1/3 of the whole day, so that the machine set is in a non-working state in most of the time every day, and how to utilize the idle machine set on the premise of not affecting the main functions of the idle machine set is also a great problem faced by the gravity energy storage system.
Disclosure of Invention
In order to overcome the technical problems, the invention aims to provide a gravity energy storage system based on a mechanically coupled flywheel. According to the gravity energy storage system based on the mechanically coupled flywheel, on the basis of meeting the requirements of an energy storage technology on high-power and long-time electric energy storage and output, the flywheel is coupled with the energy storage system, so that the moment of inertia of the energy storage system is increased, the fluctuation of the energy storage system is reduced, and for the gravity energy storage system with frequent weight switching, the power fluctuation of the system caused by weight switching can be effectively restrained, and therefore power smoothing is achieved. On the other hand, when the motor in the gravity energy storage system runs in a no-load mode and works as a high-capacity synchronous camera, the flywheel through mechanical coupling can also provide additional inertia support for the system, and the function of the synchronous camera is not affected.
In order to achieve the above purpose, the invention adopts the following technical scheme:
the gravity energy storage system based on the mechanical coupling flywheel is used for coupling the flywheel with a gravity energy storage power system and comprises an inertial flywheel, a flywheel protection cover, a bearing fixed foundation, a bearing, a coupling, a motor, a device fixing device, an electromechanical detection device, a speed reduction gearbox (the speed reduction ratio is m), a lifting system and a flywheel speed increase gearbox (the speed increase ratio is n); the inertial flywheel is directly connected with an output shaft of the motor through a coupler, the power of the motor is directly transmitted to the inertial flywheel, and the inertial flywheel is driven to synchronously rotate when the motor is started; the inertial flywheel is fixed through a bearing fixed foundation, and the inertial flywheel is matched with the bearing fixed foundation through a bearing; arranging a flywheel protecting cover around the inertial flywheel; the motor is firmly fixed through the equipment fixing device, the front end of the motor passes through the coupler and the reduction gearbox, and the rotation speed of the motor is reduced by m times and the torque is amplified by m times after passing through the reduction gearbox; the speed reduction gearbox is matched with the capacity, the power and the motor rotation speed of the gravity energy storage lifting system; the speed reduction gearbox is firmly fixed through the equipment fixing device; the output shaft of the speed reduction gearbox is connected with the input shaft of the lifting system through a coupling, so as to drive the gravity energy storage system to work; the lifting system is fixed by adopting a bearing fixed foundation, and the bearing fixed foundation is connected with a crankshaft of the lifting system through a bearing. The bearing is determined according to factors such as capacity, power, rotating speed, load characteristics and the like of the energy storage system.
Further, the lifting system behind the reduction gearbox is not limited to a winch-based form, and is applicable to other driving forms such as chain, rail, roller, cable and the like applied in the gravity energy storage field.
Preferably, for the inertial flywheel with large capacity, the flywheel protecting cover around the inertial flywheel can be vacuumized to form a vacuum sealing chamber, so that the energy loss caused by the inertial flywheel is further reduced through vacuum conditions.
Preferably, for the gravity energy storage system which is built in advance, for the motor with a single-ended output shaft, the inertia flywheel can be added between the output end of the motor and the speed reduction gearbox, the functionality of the inertia flywheel is not affected, and therefore, the inertia flywheel energy storage system can be used for inertia support modification of the energy storage system.
Preferably, for the application scene of limiting the flywheel size according to objective factors such as narrow space, a flywheel speed increasing gearbox is added between the inertial flywheel and the motor to increase the rotation speed of the flywheel, so that the inertial flywheel with smaller volume can be selected when the inertia with the same capacity is provided.
Preferably, for more severe use conditions, a flywheel speed increasing gearbox with larger multiples of high-speed mechanical gears, magnetic gears and the like is added between the inertial flywheel and the motor so as to break through the limitation of the size and the capacity of the inertial flywheel.
Preferably, for an inertial flywheel with higher speed, magnetic suspension, magnetic unloading and other technologies are added on the basis of adding a flywheel speed-increasing gearbox to increase the speed, so that mechanical friction is reduced, and the reliability of the system is improved.
Preferably, for the application scene that the horizontal space restriction is stricter, the scheme of vertical installation of the motor can be adopted to directly couple the flywheel, the reduction gearbox is adopted to reverse the driving force, the longitudinal space is utilized, and the vertical flywheel shafting has the advantages.
Preferably, for the inertial flywheel, a speed increasing device such as a high-speed mechanical gear, a magnetic gear and the like can be further added to further increase the speed of the inertial flywheel and increase the inertial capacity.
Compared with the existing energy storage technology, the invention has the beneficial effects that:
1. the invention is applicable to the gravity energy storage technical schemes under almost all existing technical routes, and improves and expands the gravity energy storage function;
2. the principle of the invention is simpler, the invention can be utilized by reforming in the existing gravity energy storage system, and the rapid frequency modulation function can be added on the basis of the existing peak regulation function by mechanically coupling the flywheel;
3. the invention has simpler structure, can achieve smaller loss through the optimization of the system, but can improve more obvious inertia supporting effect;
4. the scheme provided by the invention has low requirements on construction site selection, high stability, long service life and no pollution to the environment;
5. the scheme provided by the invention utilizes the existing equipment, so that on one hand, the inertia of the gravity energy storage system can be increased, the power fluctuation of the gravity energy storage system can be smoothed, and the stability is improved; on the other hand, the inertia can be provided for the power system when the motor operates as a synchronous camera.
Drawings
FIG. 1 is a schematic diagram of a gravity energy storage system based on mechanically coupled flywheel energy storage of the present invention;
FIG. 2 is a schematic diagram of a chain drive based gravity energy storage system of the present invention;
FIG. 3 is a schematic diagram of the present invention applied to a motor single ended output application scenario gravity energy storage system;
FIG. 4 is a schematic diagram of a gravity energy storage system incorporating the mechanical speed increasing box solution of the present invention;
FIG. 5 is a schematic diagram of a gravity energy storage system of the vertical flywheel speed increasing box solution of the present invention;
fig. 6 is a schematic diagram of a gravity energy storage system of a vertical motor solution of the present invention.
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. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention. In addition, the technical features of the embodiments of the present invention described below may be combined with each other as long as they do not collide with each other.
As shown in fig. 1, the invention realizes energy storage by coupling a flywheel with a gravity energy storage power system, wherein the gravity energy storage system comprises an inertial flywheel 1, a flywheel protection cover 2, a flywheel pit 3, a flywheel main shaft 4, a bearing fixed foundation 5, a bearing 6, a coupler 7, a motor 8, a device fixing device 9, an electromechanical detection device 10, a speed reduction gearbox 11 (the speed reduction ratio is m), a lifting system, a sprocket 16 and other energy storage transmission structures and necessary control devices, and preferably comprises a vacuum closed chamber 14, a flywheel speed increase gearbox 15 (the speed increase ratio is n), a corresponding control device and the like. The lifting system can be a winch, a chain type driving device, a track type driving device, a roller type driving device or a cable type driving device.
As shown in fig. 1, 2 and 4, the inertial flywheel 1 and the flywheel main shaft 4 are directly connected with an output shaft of a motor 8 through a coupler 7, motor power is directly transmitted to the inertial flywheel 1, and the inertial flywheel 1 is driven to synchronously rotate when the motor 8 is started; the inertia flywheel 1 is partially arranged in the flywheel pit 3, so that the shaft heights of the flywheel main shaft 4 and subsequent connecting equipment are reduced; the inertial flywheel 1 is fixed through the bearing fixed foundation 5, and the inertial flywheel 1 is matched with the bearing fixed foundation 5 through the bearing 6, so that the inertial flywheel 1 can stably operate and the loss is small; the flywheel protection cover 2 is arranged around the inertial flywheel 1, so that accidental interference after the inertial flywheel 1 rotates is avoided, and the personal safety risk of staff is reduced; the motor 8 is firmly fixed through the equipment fixing device 9, and the front end of the motor is connected with the electromechanical detection device 10 of the gravity energy storage system through the coupler 7 and is used for detecting parameters such as input and output rotation speed, torque and the like of the motor 8 so as to realize accurate control; the output shaft of the electromechanical detection device 10 is connected with the gearbox 11 through a coupler 7, and the reduction of the motor rotation speed and the amplification of the torque (energy storage direction) of the gravity energy storage system are realized through the reduction gearbox 11; the speed reduction gearbox 11 is matched with parameters such as capacity, power, motor rotation speed and the like of the gravity energy storage system; the reduction gearbox 11 is firmly fixed through the equipment fixing device 9; the output shaft of the speed reduction gearbox 11 is connected with the input shaft of the winch 12 through a coupler 7, and is used for driving the winch to rotate so as to drive the gravity energy storage system to work; the winch 12 is fixed by adopting a bearing fixed foundation 5, the bearing fixed foundation 5 is connected with a winch shaft of the winch 12 through a bearing 6, and the bearing 6 is determined according to factors such as capacity, power, rotating speed, load characteristics and the like of an energy storage system.
Further, as shown in fig. 2, the power device behind the reduction gearbox 11 is not limited to the form based on the hoist 12, and may be applicable to other driving forms used in the gravity energy storage field, such as chain, track, roller, cable, etc.
Preferably, as shown in fig. 1 and 4, for a high-capacity high-speed inertial flywheel, a vacuum can be pumped inside the flywheel protecting cover 2 to form a vacuum sealing chamber 14 so as to reduce wind resistance, and magnetic levitation, magnetic unloading and other technologies are adopted to reduce mechanical friction. Under the condition that the inertia flywheel 1 is connected with the output shaft of the motor 8 through the flywheel speed increasing gearbox 15 and the coupler 7, the rotating speed of the inertia flywheel 1 is n times of the rotating speed of the motor 8;
preferably, as shown in fig. 3, for the gravity energy storage system which is built in advance, for the motor with a single-ended output shaft, the inertia flywheel 1 can be added between the output end of the motor 8 and the reduction gearbox 11, the functionality of the inertia flywheel is not affected, and therefore, the inertia support reconstruction method can be used for the inertia support reconstruction of the energy storage system.
As shown in fig. 4, in an application scenario of limiting the flywheel size according to objective factors such as small space, a flywheel speed increasing gearbox 15 is added between the inertial flywheel 1 and the motor 8 to increase the flywheel speed, so that the inertial flywheel 1 with smaller volume can be selected when the inertia with the same capacity is provided.
Preferably, as shown in fig. 5, for the inertial flywheel 1 with higher speed, a high-speed flywheel shafting component is adopted, which is connected with a flywheel speed-increasing gearbox 15, the lower part of the flywheel shafting component is fixed with the ground, and magnetic suspension, magnetic unloading and other technologies are added on the basis of adding a magnetic gear to increase the speed, so that the reliability of the system is improved.
Preferably, as shown in fig. 6, for an application scenario with strict limitation on horizontal space, the inertial flywheel 1 can be directly coupled by adopting a scheme of vertically installing the motor 8, the driving force is commutated by adopting the reduction gearbox 11, the longitudinal space is utilized, and the vertical flywheel shafting has the advantages of the vertical flywheel shafting.
Preferably, for the vertical motor installation structure, a speed increasing device such as a high-speed mechanical gear and a magnetic gear can be further added to further increase the speed of the inertial flywheel, and on the basis, magnetic suspension, magnetic unloading and other technologies can be added to increase the inertial capacity of the gravity energy storage system.
In the gravity energy storage system, when the motor 8 reaches the rated rotation speed after program starting, the inertial flywheel 1 reaches the same synchronous speed as the motor 8, and the inertial flywheel 1 stores the rotation kinetic energy at the moment. When a heavy object is cut into the lifting system, the mechanical and electromagnetic torque of the motor fluctuates, the heavy object is in an accelerating state, the gravity energy storage system is also in the accelerating state, after the inertial flywheel 1 is added under the same condition, the fluctuation in the heavy object cutting-in process is obviously reduced, the kinetic energy part used for accelerating the heavy object is converted by the rotational kinetic energy of the inertial flywheel 1, the impact of the gravity energy storage system is reduced, and the influence of heavy object switching on the gravity energy storage system is lightened. When the weight cuts out the energy storage track, the torque of the system track fluctuates, the rotation speed of the motor increases, the torque decreases, and the gravity energy storage system is in a deceleration state; after the inertial flywheel 1 is added under the same condition, fluctuation is obviously reduced in the heavy object cutting process, the inertial flywheel 1 is driven to rotate in an accelerating way by redundant kinetic energy of the gravity energy storage system, impact of the gravity energy storage system is reduced, and the influence of heavy object switching on the gravity energy storage system is reduced.
In the gravity energy storage system, when the motor 8 is used as a synchronous camera to run empty, the inertia flywheel 1 and the motor 8 synchronously rotate, so that a large inertia support is provided for the synchronous camera, and the stability of a power grid is improved.
It will be readily appreciated by those skilled in the art that the foregoing description is merely a preferred embodiment of the invention and is not intended to limit the invention, but any modifications, equivalents, improvements or alternatives falling within the spirit and principles of the invention are intended to be included within the scope of the invention.
Claims (6)
1. A gravity energy storage system based on a mechanically coupled flywheel, characterized in that: the device comprises an inertial flywheel, a flywheel protective cover, a flywheel pit, a flywheel main shaft, a bearing fixed foundation, a bearing, a coupler, a motor, a device fixing device, an electromechanical detection device, a speed reduction gearbox and a lifting system; the reduction ratio of the reduction gearbox is m; the inertial flywheel is directly connected with an output shaft of the motor through a coupler, or is connected with the output shaft of the motor through a flywheel speed-increasing gearbox and the coupler, and the speed-increasing ratio of the flywheel speed-increasing gearbox is n; the inertial flywheel is fixed through a bearing fixed foundation, and the inertial flywheel is matched with the bearing fixed foundation through a bearing; arranging a flywheel protecting cover around the inertial flywheel; the motor is fixed through the equipment fixing device; an output shaft of the electromechanical detection device is connected with the reduction gearbox through a coupler, and the reduction of the rotating speed and the amplification of the torque of the motor are realized through the reduction gearbox; the speed reduction gearbox is matched with the capacity, the power and the motor rotation speed of the gravity energy storage system; the speed reduction gearbox is firmly fixed through the equipment fixing device; the output shaft of the speed reduction gearbox is connected with the input shaft of the lifting system through a coupling, so as to drive the gravity energy storage system to work; the rotation speed of the input shaft of the lifting system is 1/m of the rotation speed of the motor; the lifting system is fixed by adopting a bearing fixed foundation, and the bearing fixed foundation is connected with a crankshaft of the lifting system through a bearing.
2. A gravity energy storage system based on a mechanically coupled flywheel as claimed in claim 1 wherein: and vacuumizing the flywheel protective cover to reduce wind resistance, and reducing mechanical friction by adopting magnetic suspension or magnetic unloading.
3. A gravity energy storage system based on a mechanically coupled flywheel as claimed in claim 1 wherein: the lifting system is a winch, a chain type driving device, a track type driving device, a roller type driving device or a cable type driving device.
4. A gravity energy storage system based on a mechanically coupled flywheel as claimed in claim 1 wherein: under the condition that the inertia flywheel is directly connected with the motor output shaft through the coupler, the motor and the inertia flywheel synchronously rotate; under the condition that the inertia flywheel is connected with the motor output shaft through the flywheel speed increasing gearbox and the coupler, the rotating speed of the inertia flywheel is n times of the rotating speed of the motor.
5. A gravity energy storage system based on a mechanically coupled flywheel as claimed in claim 1 wherein: the motor and the inertial flywheel are vertically or horizontally installed, or the motor is horizontally installed, and the inertial flywheel is vertically installed; under the condition that the inertial flywheel is horizontally installed, the lower half part of the inertial flywheel is placed in a flywheel pit, so that the shaft height of a flywheel main shaft and equipment connected with the flywheel main shaft is reduced; under the condition that the inertial flywheel is installed vertically, the inertial flywheel is integrally installed in the flywheel pit.
6. A gravity energy storage system based on a mechanically coupled flywheel as claimed in claim 1 wherein: the front end of the motor is connected with an electromechanical detection device through a coupler and is used for detecting the input and output rotating speed and torque of the motor.
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| CN202311360559.0A CN117097068B (en) | 2023-10-20 | 2023-10-20 | Gravity energy storage system based on mechanical coupling flywheel |
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| CN101924417A (en) * | 2009-12-22 | 2010-12-22 | 苏州菲莱特能源科技有限公司 | Flywheel energy storage system with double rigid shafts |
| WO2015039534A1 (en) * | 2013-09-18 | 2015-03-26 | 柳超 | Gravitational potential energy apparatus with gravitational power generation replenishing flywheel battery energy |
| CN112005022A (en) * | 2018-02-15 | 2020-11-27 | 贝甘技术股份公司 | Large flywheel for energy storage |
| CN113098039A (en) * | 2021-03-04 | 2021-07-09 | 清华大学 | Kinetic energy recovery system and method based on flywheel energy storage variable-speed pumped storage unit |
| CN113716428A (en) * | 2021-10-15 | 2021-11-30 | 易事特集团股份有限公司 | Mechanical energy storage elevator system based on flywheel energy storage |
| CN216356315U (en) * | 2021-10-22 | 2022-04-19 | 北京泓慧国际能源技术发展有限公司 | Integrated energy storage equipment |
| CN114784830A (en) * | 2022-03-29 | 2022-07-22 | 中国科学院电工研究所 | Comprehensive physical energy storage system and energy storage method of gravity combined flywheel |
| CN115262628A (en) * | 2022-07-18 | 2022-11-01 | 中科南京未来能源***研究院 | Pit device for flywheel test |
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