CN111106713A - Modular combined energy storage power generation device - Google Patents
Modular combined energy storage power generation device Download PDFInfo
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- CN111106713A CN111106713A CN202010020550.5A CN202010020550A CN111106713A CN 111106713 A CN111106713 A CN 111106713A CN 202010020550 A CN202010020550 A CN 202010020550A CN 111106713 A CN111106713 A CN 111106713A
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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
- F16H—GEARING
- F16H33/00—Gearings based on repeated accumulation and delivery of energy
- F16H33/02—Rotary transmissions with mechanical accumulators, e.g. weights, springs, intermittently-connected flywheels
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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
- 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
- H02K7/08—Structural association with bearings
- H02K7/085—Structural association with bearings radially supporting the rotary shaft at only one end of the rotor
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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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- 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
- H02K7/1163—Structural association with clutches, brakes, gears, pulleys or mechanical starters with gears where at least two gears have non-parallel axes without having orbital motion
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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
- H02K7/18—Structural association of electric generators with mechanical driving motors, e.g. with turbines
- H02K7/1807—Rotary generators
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K2205/00—Specific aspects not provided for in the other groups of this subclass relating to casings, enclosures, supports
- H02K2205/03—Machines characterised by thrust bearings
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K2213/00—Specific aspects, not otherwise provided for and not covered by codes H02K2201/00 - H02K2211/00
- H02K2213/12—Machines characterised by the modularity of some components
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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)
- Power Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
Abstract
The invention discloses a modular combined energy storage power generation device which comprises a driving source, a clutch, a speed reducer, flywheel energy storage module groups and a power generator, wherein the power input end of the speed reducer is connected with the power output end of the driving source through the clutch, the flywheel energy storage module groups are at least one stage, the flywheel energy storage module groups at each stage are sequentially connected in series, each flywheel energy storage module group comprises an acceleration transmission box and two flywheel energy storage modules arranged on two sides of the acceleration transmission box, each flywheel energy storage module comprises a flywheel shaft vertically arranged on a thrust bearing and at least one flywheel arranged on the flywheel shaft, the input shaft of the acceleration transmission box of the first flywheel energy storage module group is in transmission connection with the power output end of the speed reducer, and the output shaft of the acceleration transmission box of the last flywheel energy storage module group is in transmission connection with a rotor. The invention solves the problems that the flywheel shaft of the existing modularized energy storage power generation device is easy to deform, has high requirement on starting torque, and has unsatisfactory energy conversion and energy storage efficiency.
Description
Technical Field
The invention belongs to the technical field of power generation devices, and particularly relates to a modular combined energy storage power generation device.
Background
There are many potential energy sources in nature and daily production, for example wind, ocean wave, sewage treatment plant, middle-size and small-size reservoir, ditch and cistern outflow water, power plant and gas boiler exhaust waste gas all contain certain energy, the driving source that drives generator work all can be regarded as to these potential energy sources, but these energy sources all have strong not enough of volatility, if as the driving source of current generator, then the continuation and the stability of generator power supply work are relatively poor, can not satisfy normal power demand, consequently, a lot of potential energy sources do not obtain effective utilization.
The invention patent application with publication number CN108631508A discloses a modular energy storage power generation device, which solves the problem of utilization of energy with strong volatility to a certain extent, but has the following disadvantages: (1) under the action of gravity and rotational inertia of the flywheel, the flywheel shaft arranged horizontally is easy to deform, meanwhile, the bearing arranged at the end part of the flywheel shaft is unevenly stressed, the lower side of the bearing is greatly stressed, the friction force borne by the flywheel shaft during rotation is large, the requirement on starting torque is high, and the energy conversion efficiency is not ideal; (2) in a certain space, the number of flywheels which can be arranged is small, and the energy storage efficiency is not ideal.
Disclosure of Invention
The invention provides a modularized combined energy storage power generation device, aiming at solving the problems that a flywheel shaft is easy to deform, the requirement on starting torque is high, and the energy conversion efficiency and the energy storage efficiency are not ideal in the conventional modularized energy storage power generation device.
The technical scheme adopted by the invention is as follows:
modular combined energy storage power generation device, including driving source, clutch, speed reducer, flywheel energy storage module group and generator, the power input end of speed reducer passes through the clutch and is connected with the power take off end of driving source, flywheel energy storage module group has one-level at least, and flywheel energy storage module groups of all levels establish ties in proper order, and every flywheel energy storage module group includes an acceleration rate transmission case and two flywheel energy storage modules, and flywheel energy storage module is respectively installed to the both sides of every acceleration rate transmission case, acceleration rate transmission case includes input shaft, transmission shaft and output shaft, be provided with input gear on the input shaft, coaxial two drive gear that are provided with on the transmission shaft, be provided with output gear on the output shaft, input gear meshes with one of them drive gear, output gear meshes with another drive gear, the rotational speed of output shaft is higher than the rotational speed of input shaft, each flywheel energy storage module comprises a flywheel shaft vertically installed on the thrust bearing and at least one flywheel installed on the flywheel shaft, two ends of the transmission shaft are respectively in transmission connection with the flywheel shafts, according to the power output sequence, the input shaft of the speed increasing transmission box of the first-stage flywheel energy storage module group is in transmission connection with the power output end of the speed reducer, and the output shaft of the speed increasing transmission box of the last-stage flywheel energy storage module group is in transmission connection with the rotor shaft of the generator.
Preferably, the generator comprises a vertical flywheel generator, a rotor shaft of the vertical flywheel generator is vertically installed on the thrust bearing, a flywheel and a rotor are installed on the rotor shaft, and an output shaft of the speed increasing transmission box of the last stage flywheel energy storage module group is in transmission connection with the rotor shaft of the vertical flywheel generator.
Preferably, the generator comprises a horizontal generator, and an output shaft of a speed increasing transmission box of the final stage flywheel energy storage module group is in transmission connection with a rotor shaft of the horizontal generator.
Preferably, the modularized combined energy storage power generation device further comprises a transmission reduction box, the transmission reduction box comprises a transmission input shaft, a transmission connecting shaft and a speed reduction output shaft, the transmission input shaft is provided with a transmission input gear, the transmission connecting shaft is vertically arranged, a transmission accelerating gear and a transmission decelerating gear are coaxially arranged on the transmission connecting shaft, the speed reduction output shaft is provided with a speed reduction output gear, the number of teeth of the transmission input gear, the transmission accelerating gear and the transmission decelerating gear is sequentially reduced, the number of teeth of the speed reduction output gear is greater than that of the teeth of the transmission decelerating gear, the transmission input gear is meshed with the transmission accelerating gear, the speed reduction output gear is meshed with the transmission decelerating gear, the transmission input shaft is in transmission connection with an output shaft of an accelerating transmission box of the last stage flywheel energy storage module group, and the transmission is in transmission connection with a vertical flywheel shaft of an independent flywheel energy storage, the speed reduction output shaft is in transmission connection with a rotor shaft of the horizontal generator.
Preferably, the transmission shaft is in transmission connection with the flywheel shaft through the bevel gear box or the universal transmission shaft and the telescopic adjusting rod.
Preferably, the output shaft of the speed increasing transmission box of the final stage flywheel energy storage module group is in transmission connection with the rotor shaft of the vertical flywheel generator through a universal transmission shaft and a telescopic adjusting rod.
Preferably, the vertical flywheel generator is provided with a temperature sensor and a ventilation and heat dissipation device, the modular combined energy storage and power generation device further comprises a controller, a signal output end of the temperature sensor is connected with a signal input end of the controller, and a control end of the ventilation and heat dissipation device is connected with a signal output end of the controller.
Preferably, the clutch is an automatic clutch, the modular combined energy storage power generation device further comprises a controller, and a control end of the automatic clutch is connected with a signal output end of the controller.
Preferably, the flywheel is disposed within a protective housing or pit.
Preferably, the edge of the flywheel of part or all of the flywheel energy storage modules is provided with a brake.
Preferably, according to the power output sequence, the mass of each flywheel is sequentially increased by 5-95%, the diameter of each flywheel is sequentially increased by 0-95%, and the rotating speed of each flywheel is sequentially increased by 2-5 times.
Preferably, the speed increasing ratio of the speed increasing transmission case is 1 (1.2-5).
Preferably, the transmission shaft is in transmission connection with the flywheel shaft through the bevel gear box with the speed increasing ratio of 1 (1-2).
Preferably, the speed increasing ratio of the transmission input gear of the transmission reduction box to the transmission speed increasing gear is 1: (2-3), the reduction ratio of the transmission reduction gear and the reduction output gear is (1.2-2): 1
The flywheel shaft is vertically arranged on the thrust bearing, so that the bending moment generated by the gravity of the flywheel acting on the flywheel shaft is minimized, the flywheel shaft is not easy to deform, meanwhile, the thrust bearing is uniformly stressed, the friction force borne by the flywheel shaft during rotation is small, the requirement on starting torque is low, and the energy conversion efficiency is ideal; in addition, through the specially designed coaxial transmission and bidirectional output speed-increasing transmission boxes, the two sides of each speed-increasing transmission box are respectively provided with a flywheel energy storage module, so that in a certain space, the number of the flywheels which can be arranged is greatly increased, the energy storage efficiency is greatly improved, and the energy storage efficiency is more ideal; through the modularized and standardized design, the manufacturing and maintenance cost is reduced, meanwhile, the rapid integral disassembly and replacement can be realized, and the device has the advantages of convenience in maintenance and short overhaul time; through the modularization combination, the output power of the speed reducer is accelerated step by step and energy is stored in a grading manner, the grade number of the flywheel energy storage module group can be flexibly configured according to the requirements of different application requirements on the rotating speed of the generator so as to meet corresponding requirements, for example, the application environment with high power load and large power consumption can be met by configuring a high-speed generator of the flywheel energy storage module group with more grade numbers, the application environment with low power load and small power consumption and strict limitation on the application field, the installation volume and the use cost can be met by configuring a low-speed generator of the flywheel energy storage module group with less grade numbers.
Drawings
Fig. 1 is a schematic front view of a modular combined energy storage power generation apparatus according to a first embodiment of the invention;
fig. 2 is a schematic top view of a modular combined energy storage power generation apparatus according to a first embodiment of the invention;
FIG. 3 is a schematic partial cross-sectional view of the modular combined energy storage and generation apparatus of FIG. 2 at A-A;
fig. 4 is a schematic front view of a modular combined energy storage power generation device according to a second embodiment of the invention;
fig. 5 is a schematic top view of a modular combined energy storage power generation apparatus according to a second embodiment of the invention;
fig. 6 is a schematic front view of a modular combined energy storage power generation device according to a third embodiment of the invention;
fig. 7 is a schematic top view of a modular combined energy storage power generation device according to a third embodiment of the invention;
fig. 8 is a schematic front view of a modular combined energy storage power generation device according to a fourth embodiment of the invention;
fig. 9 is a schematic top view of a modular combined energy storage power generation device according to a fourth embodiment of the invention;
in the figure: 1. a drive source; 2. a clutch; 3. a speed reducer; 4. a coupling; 5. a speed increasing transmission case; 5-1, an input shaft; 5-2, an input gear; 5-3, a transmission shaft; 5-4, a transmission gear; 5-5, a locker; 5-6, output shaft; 5-7, an output gear; 6. a bearing; 7. a bearing seat; 8. a flywheel; 8-1, flywheel shaft; 9. a universal drive shaft; 9-1, a telescopic adjusting rod; 10. a bevel gear box; 11. a thrust bearing; 12. a flywheel; 12-1, a rotor shaft; 13. a rotor; 14. a stator; 15. a brake; 16. a transmission reduction box; 16-1, a transmission input shaft; 16-2, a transmission input gear; 16-3, a transmission speed-increasing gear; 16-4, a transmission reduction gear; 16-5, a reduction output gear; 16-6, a deceleration output shaft; 17. a flywheel; 17-1, a flywheel shaft; 18. a horizontal generator; 19. oil sealing; 20. a controller; 21. a support frame; 22. a ventilation and heat dissipation device; 23. a protective housing.
Detailed Description
The following further describes embodiments of the present invention with reference to the drawings.
In the first embodiment, as shown in fig. 1 to 3, the modular combined energy storage power generation device of the first embodiment includes a driving source 1, a clutch 2, a speed reducer 3, flywheel energy storage module sets and a power generator, a power input end of the speed reducer 3 is connected with a power output end of the driving source 1 through the clutch 2, the flywheel energy storage module sets have three stages, each stage of the flywheel energy storage module sets are sequentially connected in series, each stage of the flywheel energy storage module set includes an acceleration transmission box 5 and two flywheel energy storage modules, two flywheel energy storage modules are respectively installed on two sides of the acceleration transmission box 5, the acceleration transmission box 5 includes an input shaft 5-1, a transmission shaft 5-3 and an output shaft 5-6, the input shaft 5-1 is provided with an input gear 5-2, the transmission shaft 5-3 is coaxially provided with two transmission gears 5-4, and lockers 5-5 are installed at rear, The output shaft 5-6 is provided with an output gear 5-7, the input gear 5-2 is meshed with one transmission gear 5-4, the output gear 5-7 is meshed with the other transmission gear 5-4, the rotating speed of the output shaft 5-6 is higher than that of the input shaft 5-1, each flywheel energy storage module comprises a flywheel shaft 8-1 vertically arranged on a thrust bearing 11 and at least one flywheel 8 arranged on the flywheel shaft 8-1, two ends of a transmission shaft 5-3 are respectively in transmission connection with the flywheel shaft 8-1, according to the power output sequence, the input shaft of the speed increasing transmission box 5 of the first stage flywheel energy storage module group is in transmission connection with the power output end of the speed reducer 3 through a coupler 4, and the input shaft of the speed increasing transmission box 5 of the second stage flywheel energy storage module group is in transmission connection with the output shaft of the speed increasing transmission box 5 of the first stage flywheel energy storage module group The output shaft is in transmission connection, the input shaft of the speed increasing transmission box 5 of the last stage flywheel energy storage module group is in transmission connection with the output shaft of the speed increasing transmission box 5 of the second stage flywheel energy storage module group, and the output shaft of the speed increasing transmission box 5 of the last stage flywheel energy storage module group is in transmission connection with the rotor shaft of the generator.
The thrust bearing 11 supports the weight of the whole flywheel energy storage module and supports the operation of the flywheel energy storage module, and the vertically arranged bearing 6 and the bearing seat 7 play a role in guiding and positioning.
Specifically, the generator is a vertical flywheel generator, a rotor shaft 12-1 of the vertical flywheel generator is vertically arranged on a thrust bearing 11, a flywheel 12 and a rotor 13 are arranged on the thrust bearing, and an output shaft of a speed increasing transmission box 5 of the last-stage flywheel energy storage module group is in transmission connection with the rotor shaft 12-1 of the vertical flywheel generator.
The transmission shaft 5-3 is in transmission connection with the flywheel shaft 8-1 through a universal transmission shaft 9 and a telescopic adjusting rod 9-1.
Preferably, the output shaft of the speed-increasing transmission case 5 of the final-stage flywheel energy storage module group is in transmission connection with the rotor shaft 12-1 of the vertical flywheel generator through a universal transmission shaft 9 and a telescopic adjusting rod 9-1.
In order to control the working temperature of the vertical flywheel generator within a proper range, preferably, the vertical flywheel generator is provided with a temperature sensor and a ventilation and heat dissipation device 22, the modular combined energy storage and power generation device further comprises a controller 20, a signal output end of the temperature sensor is connected with a signal input end of the controller 20, and a control end of the ventilation and heat dissipation device 22 is connected with a signal output end of the controller 20. The temperature sensor collects the working temperature of the vertical flywheel generator in real time, corresponding signals are output to the controller, the controller processes and compares the input temperature signals in real time, when the temperature value corresponding to the input temperature signals reaches or exceeds the upper limit value of the proper working temperature range set by the controller, the controller 20 controls the ventilation and heat dissipation device 22 to start working, the temperature of the vertical flywheel generator is reduced, and when the temperature value corresponding to the input temperature signals is reduced to the lower limit value of the proper working temperature range set by the controller, the controller 20 controls the ventilation and heat dissipation device 22 to stop working.
Preferably, the clutch 2 is an automatic clutch, and a control end of the automatic clutch is connected with a signal output end of the controller 20.
To reduce operating noise and prevent accidental flying of the flywheel, it is preferred that the flywheel be disposed within a protective housing 23.
In order to decelerate and brake the modular combined energy storage and power generation device of the embodiment when needed, preferably, the edge of the flywheel 8 of the first stage flywheel energy storage module group is provided with a brake 15.
Preferably, according to the power output sequence, the mass of each flywheel of each level of flywheel energy storage module group is sequentially increased by 5-95%, the diameter of each flywheel is sequentially increased by 0-95%, and the rotating speed of each flywheel is sequentially increased by 2-5 times.
Preferably, the speed increasing ratio of the speed increasing transmission case is 1 (1.2-5).
Preferably, the transmission shaft is in transmission connection with the flywheel shaft through the bevel gear box with the speed increasing ratio of 1 (1-2).
Preferably, the speed increasing ratio of the transmission input gear of the transmission reduction box to the transmission speed increasing gear is 1: (2-3), the reduction ratio of the transmission reduction gear and the reduction output gear is (1.2-2): 1
When the modular combined energy storage power generation device of the embodiment is used as a certain high-speed generator with the rotating speed of more than 200 kilowatts and the rated rotating speed of 1500 revolutions per minute, the mass, the diameter and the rotating speed of each flywheel 8 in the first-stage flywheel energy storage module group are respectively 1500 kg-5000 kg, 1.2 m-1.6 m and 150 revolutions per minute according to the power output sequence; the mass, the diameter and the rotating speed of the flywheel 8 in the second-stage flywheel energy storage module group are respectively 1500 kg-6000 kg, 1.2 m-1.8 m and 450 rpm; the mass, the diameter and the rotating speed of the flywheel 8 in the third-stage flywheel energy storage module group are respectively 1500 kg-8000 kg, 1.2 m-2.0 m and 900 rpm; the mass, diameter and rotating speed of the flywheel 12 of the vertical flywheel generator are 2000 kg-10000 kg, 2.0 m-3.8 m and 1500 rpm respectively.
The working principle of the modular combined energy storage power generation device of the embodiment is as follows: no matter a turbine, a marine wave energy mechanical conversion device or a motor which uses water or waste gas as a working medium is used as a driving source 1, the power output end of the driving source 1 inputs power into a speed reducer 3 through a clutch 2, the power is output into a speed increasing transmission box 5 of a first-stage flywheel energy storage module group after being decelerated and torque-increased through the speed reducer 3, the speed increasing transmission box 5 of the first-stage flywheel energy storage module group drives flywheel energy storage modules arranged at two sides of the speed increasing transmission box to rotate the flywheel energy storage modules to realize energy storage, meanwhile, the speed increasing transmission box 5 of the first-stage flywheel energy storage module group inputs power to the speed increasing transmission box 5 of a second-stage flywheel energy storage module group in an increasing mode, the speed increasing transmission box 5 of the second-stage flywheel energy storage module group drives flywheel energy storage modules arranged at two sides of the speed increasing transmission box to rotate the flywheel energy storage modules to realize energy storage, so that step-by-, the rotating speed of the rotor shaft 12-1 of the vertical flywheel generator is gradually increased to the required rotating speed. Because the rotating speed of the flywheel energy storage modules of each level of flywheel energy storage module group is increased step by step, according to the power output sequence, the energy storage torque generated by the rotating motion of the flywheel energy storage modules with different rotating speeds and the flywheel energy storage torque of the vertical flywheel generator overcome the magnetic damping of the vertical flywheel generator together, so that the vertical flywheel generator reaches the working voltage and working Hertz number and outputs electric quantity to the outside.
When the modular combined energy storage power generation device of the embodiment needs to stop working, the controller 20 firstly controls to separate the clutch 2, cuts off the power connection between the speed reducer 3 and the driving source 1, and then the brake 15 starts working to brake the flywheel 8 of the first stage flywheel energy storage module group, so as to decelerate the modular combined energy storage power generation device and stop working.
As shown in fig. 4 to 5, the second embodiment is different from the first embodiment in that: in this embodiment, the flywheel energy storage module set has only one stage.
As shown in fig. 6 to 7, the third embodiment is different from the first embodiment in that: in the embodiment, the generator is a horizontal generator 18, and an output shaft of the speed increasing transmission box 5 of the final stage flywheel energy storage module group is in transmission connection with a rotor shaft of the horizontal generator 18; the modular combined energy storage power generation device of the embodiment further comprises a transmission reduction box 16, the transmission reduction box 16 comprises a transmission input shaft 16-1, a transmission connecting shaft and a reduction output shaft 16-6, the transmission input shaft 16-1 is provided with a transmission input gear 16-2, the transmission connecting shaft is vertically arranged, a transmission speed-up gear 16-3 and a transmission reduction gear 16-4 are coaxially arranged on the transmission connecting shaft, the reduction output shaft 16-6 is provided with a reduction output gear 16-5, the number of teeth of the transmission input gear 16-2, the transmission speed-up gear 16-3 and the transmission reduction gear 16-4 is sequentially reduced, the number of teeth of the reduction output gear 16-5 is greater than that of the transmission reduction gear 16-4, the transmission input gear 16-2 is meshed with the transmission speed-up gear 16-3, the speed reduction output gear 16-5 is meshed with the transmission speed reduction gear 16-4, the transmission input shaft 16-1 is in transmission connection with the output shaft of the speed increasing transmission box 5 of the final-stage flywheel energy storage module group, the transmission connecting shaft is in transmission connection with the vertical flywheel shaft 17-1 of an independent flywheel energy storage module, and the speed reduction output shaft 16-6 is in transmission connection with the rotor shaft of the horizontal generator 18 through the coupler 4; a transmission shaft 5-3 of the speed-increasing transmission box 5 is in transmission connection with a flywheel shaft 8-1 through a bevel gear box 10.
When the modular combined energy storage power generation device of the embodiment is used as a certain high-speed generator with the rotating speed of more than 200 kilowatts and the rated rotating speed of 1500 revolutions per minute, the mass, the diameter and the rotating speed of each flywheel 8 in the first-stage flywheel energy storage module group are respectively 1500 kg-5000 kg, 1.2 m-1.6 m and 180 revolutions per minute according to the power output sequence, and the speed increasing ratio of the bevel gear box 10 is 1: 1; the mass, the diameter and the rotating speed of a flywheel 8 in the second-stage flywheel energy storage module group are respectively 1500 kg-6000 kg, 1.2 m-1.8 m and 540 r/min, and the speed increasing ratio of the bevel gear box 10 is 1: 1; the mass, the diameter and the rotating speed of the flywheel 8 in the third-stage flywheel energy storage module group are respectively 1500 kg-8000 kg, 1.2 m-2.0 m and 1080 rpm, and the speed increasing ratio of the bevel gear box 10 is 1: 1; the mass, diameter and rotating speed of the flywheel 17 of the independent flywheel energy storage module are 2000 kg-8000 kg, 2.0 m-3.8 m and 2160 r/m respectively, the reduction ratio of the transmission reduction gear 16-4 and the reduction output gear 16-5 of the transmission reduction gearbox 16 is 1.4: 1, after speed reduction and torque increase, the speed reduction output shaft 16-6 drives a rotor shaft of a horizontal generator 18 connected with the speed reduction output shaft to rotate at the rotating speed of 1500 rpm, so that the horizontal generator generates electricity.
The fourth embodiment is shown in fig. 8 to 9, and the differences between the third embodiment and the fourth embodiment are: in this embodiment, the flywheel energy storage module group has only one stage; the transmission shaft of the speed-increasing transmission box 5 is in transmission connection with the flywheel shaft 8-1 through a universal transmission shaft 9 and a telescopic adjusting rod 9-1.
When the modular combined energy storage power generation device of the embodiment is used as a certain low-speed generator with the rated rotation speed of 500 rpm and the kilowatt below 200 kilowatts, the mass, the diameter and the rotation speed of each flywheel 8 in the first-stage flywheel energy storage module group are respectively 1500 kg-5000 kg, 1.2 m-2.0 m and 260 rpm according to the power output sequence; the mass, diameter and rotating speed of the flywheel 17 of the independent flywheel energy storage module are 2000 kg-10000 kg, 2.0 m-3.8 m and 650 r/min respectively, and the reduction ratio of the transmission reduction gear of the transmission reduction gearbox 16 and the reduction output gear is 1.3: 1, after speed reduction and torque increase, the speed reduction output shaft drives a rotor shaft of a horizontal generator 18 connected with the speed reduction output shaft to rotate at a rotating speed of 500 rpm, so that the horizontal generator generates electricity.
In addition to the above embodiments, when the specific application needs are met, the number of stages of the flywheel energy storage module set can be increased or decreased according to the requirements on the power and the rotating speed of the generator, and the speed increasing ratio of the speed increasing transmission case can be set.
The flywheel shaft is vertically arranged on the thrust bearing, so that the bending moment generated by the gravity of the flywheel acting on the flywheel shaft is minimized, the flywheel shaft is not easy to deform, meanwhile, the thrust bearing is uniformly stressed, the friction force borne by the flywheel shaft during rotation is small, the requirement on starting torque is low, and the energy conversion efficiency is ideal; in addition, through the specially designed coaxial transmission and bidirectional output speed-increasing transmission boxes, the two sides of each speed-increasing transmission box are respectively provided with a flywheel energy storage module, so that in a certain space, the number of the flywheels which can be arranged is greatly increased, the energy storage efficiency is greatly improved, and the energy storage efficiency is more ideal; through the modularized and standardized design, the manufacturing and maintenance cost is reduced, meanwhile, the rapid integral disassembly and replacement can be realized, and the device has the advantages of convenience in maintenance and short overhaul time; through the modularization combination, the output power of the speed reducer is accelerated step by step and energy is stored in a grading manner, the grade number of the flywheel energy storage module group can be flexibly configured according to the requirements of different application requirements on the rotating speed of the generator so as to meet corresponding requirements, for example, the application environment with high power load and large power consumption can be met by configuring a high-speed generator of the flywheel energy storage module group with more grade numbers, the application environment with low power load and small power consumption and strict limitation on the application field, the installation volume and the use cost can be met by configuring a low-speed generator of the flywheel energy storage module group with less grade numbers.
The modular combined energy storage power generation device can utilize water flowing out of a sewage treatment plant, a medium-small reservoir, a ditch and a reservoir, waste gas discharged by a power plant and a gas boiler, a mechanical conversion device of ocean wave energy as driving power, and a motor as power drive, realizes pulse cycle power generation, can be applied to the fields of rail transit energy recovery and port gantry crane energy storage and energy conservation, and can also be matched and complemented with wind power and light power for peak regulation of an electric power system and a charging pile.
The modularized combined energy storage power generation device has low requirement on the stability of the driving source, does not influence the continuity of power supply work of the driving source even if the stability of the driving source is poor, can realize multipurpose generalization, can realize grid-connected or off-grid power generation by using the controller and the inverter, and has wide application prospect.
Therefore, the invention solves the problems of easy deformation of the flywheel shaft, high requirement on starting torque, and unsatisfactory energy conversion efficiency and energy storage efficiency of the conventional modularized energy storage power generation device, and has the advantages of low manufacturing and maintenance cost, convenient maintenance, short maintenance time, flexible configuration and strong adaptability.
Obviously, the above embodiments are not the only embodiments of the present invention, and many simple changes can be made without departing from the technical essence thereof, such as: the flywheel energy storage module group has two or more than four stages; more than two flywheels are arranged on each flywheel shaft; a transmission connecting shaft of the transmission reduction box is in transmission connection with a rotor shaft of the vertical flywheel generator; a brake is arranged on the edge of the flywheel of part (the flywheel containing the first-stage or not containing the first-stage flywheel energy storage module group) or all flywheel energy storage modules; the flywheel is arranged in a pit, etc., and will not be described in detail herein.
The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes made without departing from the spirit of the present invention within the knowledge of those skilled in the art should be construed as the scope of the present invention.
Claims (10)
1. Modularization combination energy storage power generation facility, its characterized in that: including driving source, clutch, speed reducer, flywheel energy storage module group and generator, the power input end of speed reducer passes through the clutch and is connected with the power take off end of driving source, flywheel energy storage module group has the one-level at least, and flywheel energy storage module groups at different levels establish ties in proper order, and every flywheel energy storage module group includes an acceleration transmission case and two flywheel energy storage modules, and flywheel energy storage module is respectively installed to the both sides of every acceleration transmission case, acceleration transmission case includes input shaft, transmission shaft and output shaft, be provided with input gear on the input shaft, coaxial two drive gear that are provided with on the transmission shaft, be provided with output gear on the output shaft, input gear meshes with one of them drive gear, output gear and another drive gear meshing, the rotational speed of output shaft is higher than the rotational speed of input shaft, and every flywheel energy storage module includes that a vertical flywheel shaft and at least one of installing on thrust bearing installs the epaxial flywheel And the two ends of the transmission shaft are respectively in transmission connection with a flywheel shaft, according to the power output sequence, the input shaft of the speed increasing transmission box of the first-stage flywheel energy storage module group is in transmission connection with the power output end of the speed reducer, and the output shaft of the speed increasing transmission box of the last-stage flywheel energy storage module group is in transmission connection with the rotor shaft of the generator.
2. The modular combined energy storage and generation apparatus of claim 1, wherein: the generator comprises a vertical flywheel generator, a rotor shaft of the vertical flywheel generator is vertically arranged on a thrust bearing, a flywheel and a rotor are arranged on the rotor shaft, and an output shaft of a speed increasing transmission box of the final-stage flywheel energy storage module group is in transmission connection with the rotor shaft of the vertical flywheel generator.
3. The modular combined energy storage and generation apparatus according to any one of claims 1 or 2, wherein: the generator comprises a horizontal generator, and an output shaft of a speed increasing transmission box of the final-stage flywheel energy storage module group is in transmission connection with a rotor shaft of the horizontal generator.
4. The modular combined energy storage and generation apparatus according to claim 3, wherein: the transmission reduction box comprises a transmission input shaft, a transmission connecting shaft and a reduction output shaft, wherein the transmission input shaft is provided with a transmission input gear, the transmission connecting shaft is vertically arranged, a transmission accelerating gear and a transmission reducing gear are coaxially arranged on the transmission connecting shaft, the reduction output shaft is provided with a reduction output gear, the number of teeth of the transmission input gear, the transmission accelerating gear and the transmission reducing gear is sequentially reduced, the number of teeth of the reduction output gear is greater than that of teeth of the transmission reducing gear, the transmission input gear is meshed with the transmission accelerating gear, the reduction output gear is meshed with the transmission reducing gear, the transmission input shaft is in transmission connection with an output shaft of an accelerating transmission box of a final-stage flywheel energy storage module group, and the transmission connecting shaft is in transmission connection with a vertical flywheel shaft of an independent flywheel energy storage module or a rotor shaft of a vertical flywheel generator, the speed reduction output shaft is in transmission connection with a rotor shaft of the horizontal generator.
5. The modular combined energy storage and generation apparatus of claim 1, wherein: the transmission shaft is in transmission connection with the flywheel shaft through the bevel gear box or the universal transmission shaft and the telescopic adjusting rod.
6. The modular combined energy storage and generation apparatus of claim 2, wherein: and an output shaft of the speed increasing transmission box of the final-stage flywheel energy storage module group is in transmission connection with a rotor shaft of the vertical flywheel generator through a universal transmission shaft and a telescopic adjusting rod.
7. The modular combined energy storage and generation apparatus of claim 2, wherein: the modular combined energy storage power generation device comprises a vertical flywheel generator, and is characterized in that a temperature sensor and a ventilation and heat dissipation device are arranged on the vertical flywheel generator, the modular combined energy storage power generation device further comprises a controller, the signal output end of the temperature sensor is connected with the signal input end of the controller, and the control end of the ventilation and heat dissipation device is connected with the signal output end of the controller.
8. The modular combined energy storage and generation apparatus of claim 1, wherein: the modular combined energy storage power generation device further comprises a controller, and a control end of the automatic clutch is connected with a signal output end of the controller.
9. The modular combined energy storage and generation apparatus of claim 1, wherein: the flywheel is arranged in the protective shell or the pit, and the edge of the flywheel of part or all of the flywheel energy storage modules is provided with a brake.
10. The modular combined energy storage and generation apparatus of claim 1, wherein: according to the power output sequence, the mass of each flywheel is increased in a proportion of 5% -95%, the diameter of each flywheel is increased in a proportion of 0-95%, and the rotating speed of each flywheel is increased in a proportion of 2-5 times.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114856888A (en) * | 2022-05-17 | 2022-08-05 | 张新娥 | Intelligent hydroelectric generation device adopting grading power generation mode |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114856888A (en) * | 2022-05-17 | 2022-08-05 | 张新娥 | Intelligent hydroelectric generation device adopting grading power generation mode |
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