CN115116319A - Gravity energy storage power generation model and gravity energy storage system applying same - Google Patents
Gravity energy storage power generation model and gravity energy storage system applying same Download PDFInfo
- Publication number
- CN115116319A CN115116319A CN202210872498.5A CN202210872498A CN115116319A CN 115116319 A CN115116319 A CN 115116319A CN 202210872498 A CN202210872498 A CN 202210872498A CN 115116319 A CN115116319 A CN 115116319A
- Authority
- CN
- China
- Prior art keywords
- energy storage
- power generation
- double
- extension
- braking
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Classifications
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09B—EDUCATIONAL OR DEMONSTRATION APPLIANCES; APPLIANCES FOR TEACHING, OR COMMUNICATING WITH, THE BLIND, DEAF OR MUTE; MODELS; PLANETARIA; GLOBES; MAPS; DIAGRAMS
- G09B25/00—Models for purposes not provided for in G09B23/00, e.g. full-sized devices for demonstration purposes
- G09B25/02—Models for purposes not provided for in G09B23/00, e.g. full-sized devices for demonstration purposes of industrial processes; of machinery
Abstract
The invention discloses a gravity energy storage power generation model and a gravity energy storage system applied by the same, wherein the gravity energy storage system comprises a generator, a clutch and a double-extension-shaft motor which are coaxially and sequentially connected, and the generator, the clutch and the double-extension-shaft motor are respectively in control connection with a variable frequency controller; the potential energy load is driven by the double-extension-shaft motor to ascend along a positive direction or descend or stop along a negative direction; when the clutch is in a disconnected state, the potential energy load is driven by the double-extension-shaft motor to ascend along the positive direction, so that energy storage is realized; when the clutch is in a locking state, the potential energy load is driven by the double-extension-shaft motor to descend along the negative direction, so that power generation is realized; the invention effectively controls the rotating speed of the generator and the motor, improves the transmission efficiency of the potential energy load and the quality of the output electric energy of the generator, saves the electric energy of the excitation of the motor rotor, has low maintenance cost, effectively prolongs the service life of the gravity energy storage system, and obviously reduces the maintenance cost in the service life cycle.
Description
Technical Field
The invention belongs to the technical field of energy storage, and particularly relates to a gravity energy storage power generation model and a gravity energy storage system applied to the power generation model.
Background
The state vigorously develops clean energy power generation projects, such as wind power generation, solar photovoltaic power generation, tidal power generation and other renewable pollution-free energy sources, so that carbon emission generated by fossil fuel combustion power generation is reduced. However, the clean energy power generation resources and the power loads are often not matched, especially the demand of the power grid side with wind power generation along the sea at night is reduced, and the power is difficult to be consumed. The electric power can be stored or converted into other forms of energy storage through the energy storage, so that electric energy is released and generated in the peak time of electricity utilization, and the peak regulation of the electric power can be performed in cooperation with a power grid.
At present, a common power generation model directly drives a generator by a load or is connected with the generator through a belt pulley for power generation and grid connection, the problems of unstable power generation quality and low position control precision exist, particularly, when gravity energy storage is carried out, the height is more than 100m, the load weight is more than 1000kg, due to elastic deformation of a hoisting system, the gear system or the belt pulley system is abraded, so that the problems of difficulty in controlling the vertical running speed and grabbing the load exist, and the efficiency is low.
The applicant has decided to seek technical solutions to solve the above technical problems.
Disclosure of Invention
In view of this, the present invention provides a gravity energy storage power generation model and a gravity energy storage system using the same, which effectively control the rotation speed of a generator and a motor, improve the transmission efficiency of a potential energy load and the quality of electric energy output by the generator, save the electric energy excited by a motor rotor, reduce the maintenance cost, effectively prolong the service life of the gravity energy storage system, and significantly reduce the maintenance cost in the life cycle.
The technical scheme adopted by the invention is as follows:
a gravity energy storage power generation model comprises a power generator, a clutch and a double-extension-shaft motor which are coaxially and sequentially connected, wherein,
the generator, the clutch and the double-extension-shaft motor are respectively in control connection with the variable frequency controller;
the double-extension-shaft motor is in transmission connection with a potential energy load, and the potential energy load rises along a positive direction or falls or stops along a negative direction under the driving of the double-extension-shaft motor under the control of the variable frequency controller;
under the control of the variable frequency controller, the clutch is selectively disconnected or locked between the generator and the double-extension-shaft motor, and when the clutch is in a disconnected state, the potential energy load is driven by the double-extension-shaft motor to ascend along the positive direction so as to realize energy storage; when the clutch is in a locking state, the potential energy load is driven by the double-extension-shaft motor to descend along the negative direction, and power generation is realized.
Preferably, the frequency conversion controller is connected with an electric energy double-fed unit, wherein the electric energy double-fed unit at least comprises an energy storage battery and a public power grid, the energy storage battery provides a low-voltage power supply for the frequency conversion controller in a standby state, and when the frequency conversion controller is in a working state, the alternating current output by the generator is processed and then is connected to the public power grid.
Preferably, the electric energy double-fed unit further comprises a photovoltaic power generation unit, and the power output end of the photovoltaic power generation unit is respectively connected with the energy storage battery and a public power grid; and the energy storage battery or the public power grid provides a medium-voltage and/or low-voltage power supply for the variable frequency controller in a working state.
Preferably, the generator is a variable frequency permanent magnet synchronous motor, and when the generator is operated, three-phase alternating current is generated and enters the variable frequency controller, and then is merged into the electric energy double-fed unit; the double-extension-shaft type motor is a variable-frequency permanent magnet synchronous motor, and the torque, the direction and the speed of the double-extension-shaft type motor are controlled by the variable-frequency controller, so that the potential energy load can be accurately displaced according to a preset curve operation instruction.
Preferably, the double-extension-shaft motor is in transmission connection with the potential energy load through a transmission unit; the transmission unit comprises a winding drum provided with a lifting rope, the winding drum is connected with the double-extension-shaft motor in an installing mode, and the lower end of the lifting rope is connected with a manipulator used for positioning and transferring the position energy load.
Preferably, the robot arm is selectively raised, lowered or stopped in a lifting channel of the energy-efficient load, wherein,
the manipulator is correspondingly provided with a displacement sensor and a vision sensor, and the displacement sensor is in communication connection with the variable frequency controller;
the lifting channel corresponds to a plurality of transverse channel layers which are distributed in a stacking mode in the positive and negative directions, and each transverse channel layer is provided with a two-dimensional code baffle which is in communication connection with the vision sensor.
Preferably, an axle-clasping brake is arranged between the double-extension-shaft motor and the transmission unit, the axle-clasping brake is in control connection with the variable-frequency controller, and braking or braking release is executed according to an instruction sent by the variable-frequency controller.
Preferably, the brake state of the axle-holding brake comprises energy storage brake and power generation brake,/emergency brake,/safety brake, wherein,
the energy storage braking means that the potential energy load meets the specified energy storage requirement, and the axle-clasping brake executes braking when the frequency conversion controller detects and identifies the corresponding two-dimensional code baffle through the visual sensor;
the power generation braking refers to that the potential energy load finishes the appointed storage requirement, and when the frequency conversion controller detects and identifies the two-dimensional code baffle through the visual sensor, the shaft-holding brake executes braking;
the emergency braking means that the shaft-holding brake performs braking when the potential energy load is at any position of a lifting channel;
the safe braking means that the shaft-clasping brake is operated to brake through manual operation when the potential energy load is at any position of the lifting channel.
Preferably, the axle-gripping brake position has dual redundant brakes; the variable frequency controller is provided with an emergency braking resistor and is used for preventing the potential energy load from absorbing excessive current on a direct current bus when the potential energy load exceeds the speed limit and preventing tripping due to overhigh voltage.
Preferably, the gravity energy storage system comprises a gravity energy storage parallel frame fixedly installed on a foundation, the gravity energy storage parallel frame comprises an upper energy storage layer area and a lower energy storage layer area which are distributed at intervals in the positive and negative directions, and a lifting channel used for accommodating a potential energy load to perform vertical displacement is arranged between the upper energy storage layer area and the lower energy storage layer area;
the upper energy storage layer region comprises a plurality of energy storage layers which are distributed in a stacking manner in the positive and negative directions, the lower energy storage layer region comprises a plurality of storage layers which are distributed in a stacking manner in the positive and negative directions, the potential energy load is selectively positioned in the storage layers or the energy storage layers, and the storage layers and the energy storage layers are both used as transverse channel layers; the gravity energy storage system adopts the power generation model to realize power generation and energy storage.
The invention provides a power generation model scheme which adopts a variable frequency controller to control a double-extension-shaft type motor to drive a potential energy load, simultaneously connects a power generator through a clutch in a coaxial direction, and realizes the ascending, descending or stopping of the potential energy load along a positive direction or a negative direction under the control of the variable frequency controller, thereby realizing energy storage power generation, effectively controlling the rotating speed of the power generator and the motor, improving the transmission efficiency of the potential energy load and the quality of the output electric energy of the power generator, saving the electric energy of the excitation of a motor rotor, having low maintenance cost, effectively prolonging the service life of a gravity energy storage system, and obviously reducing the maintenance cost in a life cycle.
Drawings
FIG. 1 is a schematic diagram of a connection structure of a power generation model according to an embodiment of the present invention;
fig. 2 is a diagram of the change of the up-down state of the lower energy load 2 through the elevating passage 14 according to the embodiment of the present invention;
fig. 3 is a schematic structural diagram of a gravity energy storage system according to an embodiment of the present invention.
Detailed Description
In order to make those skilled in the art better understand the technical solutions of the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 3, a gravity energy storage system includes a gravity energy storage parallel frame fixedly installed on a foundation 11, wherein preferably, the gravity energy storage parallel frame may specifically adopt a stable and reliable structure formed by connecting metal profiles and fasteners, and during actual manufacturing, an assembly type production process may be adopted, so that the installation efficiency is high; preferably, in the embodiment, the foundation 11 supports the operation of the gravity energy storage parallel frame, and the foundation 11 is formed by pouring steel frame concrete, so that the overall life of the gravity energy storage parallel frame can reach more than 40 years, and the life cycle cost is low; the gravity energy storage parallel frame comprises an upper energy storage layer area 12 and a lower energy storage layer area 13 which are distributed at intervals in the positive and negative directions, and a lifting channel 14 for accommodating a potential energy load to move up and down is arranged between the upper energy storage layer area 12 and the lower energy storage layer area 13; the upper energy storage layer area 12 comprises a plurality of energy storage layers 12a (which can be distributed in the X direction and/or the Y direction in the transverse direction) which are distributed in a stacking manner in the positive and negative directions, the lower energy storage layer area 13 comprises a plurality of energy storage layers 13a (which can be distributed in the X direction and/or the Y direction in the transverse direction) which are distributed in a stacking manner in the positive and negative directions, the potential energy load 2 is selectively positioned in the energy storage layers 13a or 12a through displacement in the lifting channel 14, and the energy storage layers 12a and 13a are both used as transverse channel layers; preferably, in this embodiment, an intermediate layer region 15 is provided between the upper energy storage layer region 12 and the lower energy storage layer region 13, and the intermediate layer region 15 is used as an expansion region of the upper energy storage layer region 12 and the lower energy storage layer region 13 in the positive and negative directions, and in actual operation, the intermediate layer region 15 may be used as an expansion unit of the upper energy storage layer region 12 and the lower energy storage layer region 13 in the positive and negative directions, and is used for increasing the gravity energy storage capacity; preferably, in this embodiment, the potential energy loads in the upper energy storage layer region 12 and the lower energy storage layer region 13 may be gravity blocks with the same shape and weight, mainly made of sand and carbon steel, or may be made of other materials, which is not limited in this embodiment.
Further preferably, the structure of the upper and lower storage layer regions 12 and 13 used in the embodiments of the present application can be directly referred to the structure related to the prior application CN202210646622.6 of the present applicant, and a description thereof will not be repeated.
In this embodiment, at least 1 lifting channel 14 in the gravity energy storage system as described above uses the following power generation model in this embodiment to realize power generation and energy storage;
referring to fig. 1 and fig. 2, a gravity energy storage power generation model includes a generator 3, a clutch 4, and a double-extension-shaft motor 5, which are coaxially connected in sequence, wherein in the present embodiment, the generator 3, the clutch 4, and the double-extension-shaft motor 5 are respectively connected to a variable frequency controller 6 in a control manner; the double-extension-shaft motor 5 is in transmission connection with the potential energy load 2, and the potential energy load 2 is driven by the double-extension-shaft motor 5 to ascend along a positive direction or descend along a negative direction or stop through the control of the variable frequency controller 6; under the control of the variable frequency controller 6, the clutch 4 is selectively disconnected or locked between the generator 3 and the double-extension-shaft motor 5, and when the clutch 4 is in a disconnected state, the potential energy load 2 is driven by the double-extension-shaft motor 5 to ascend along the positive direction to realize energy storage; when the clutch 4 is in a locked state, the potential energy load 2 is driven by the double-extension-shaft motor 5 to descend along the negative direction, so that power generation is realized.
When the double-extension-shaft-type motor works, the clutch 4 is disconnected, the generator 3 is mechanically separated from the double-extension-shaft-type motor 5, and no torque is transmitted between the generator and the double-extension-shaft-type motor; when the clutch 4 is locked, the generator 3 and the double-extension-shaft motor 5 are mechanically attracted, and equal torque is transmitted between the two.
Preferably, in this embodiment, the variable frequency controller 6 is connected to an electric energy doubly-fed unit 7, where the electric energy doubly-fed unit 7 at least includes an energy storage battery 7a and a public power grid 7b, the energy storage battery 7a provides a low-voltage power supply to the variable frequency controller 6 in a standby state, and when the variable frequency controller 6 is in an operating state, the variable frequency controller processes the alternating current output by the generator 3 and then is connected to the public power grid 7 b; further preferably, the electric energy double-feed unit 7 further comprises a photovoltaic power generation unit 7c, and the power output ends of the photovoltaic power generation unit 7c are respectively connected with the energy storage battery 7a and the public power grid 7 b; the energy storage battery 7a or the public power grid 7b provides a medium-voltage and/or low-voltage power supply for the variable frequency controller 6 in a working state; in actual operation, the photovoltaic panels of the photovoltaic power generation unit 7c are arranged on the top and the side of the gravity energy storage parallel frame and are irradiated by sunlight, and the generated power generation electric energy is provided for the energy storage battery 7a and the public power grid 7 b.
Preferably, in the present embodiment, the generator 3 is a variable frequency permanent magnet synchronous motor, which generates three-phase alternating current to enter the variable frequency controller 6 when operating, and then is incorporated into the electric energy double-fed unit 7; the double-extension-shaft type motor 5 is a variable-frequency permanent magnet synchronous motor, and the torque, the direction and the speed of the motor are controlled by a variable-frequency controller 6, so that the potential energy load 2 can be accurately displaced according to a preset curve operation instruction.
Preferably, in the present embodiment, the double-extension-shaft motor 5 is in transmission connection with the potential energy load 2 through a transmission unit; the transmission unit comprises a winding drum 8a provided with a lifting rope 8b, the winding drum 8a is connected with the double-extension-shaft motor 5 in an installing mode, and the lower end of the lifting rope 8b is connected with a manipulator 8c used for positioning and transferring the potential energy load 2 in an installing mode; preferably, the manipulator 8c selectively ascends, descends and stops in the lifting channel 14 of the potential load 2, wherein the manipulator 8c is correspondingly provided with a displacement sensor 9a and a vision sensor 9b, the displacement sensor 9a is in communication connection with the variable frequency controller 6, and during actual work, the displacement sensor 9a detects the position of the manipulator 8c and feeds back a signal to the variable frequency controller 6, so that the double-extension-shaft motor 5 is ensured to accurately accelerate, decelerate and move at a constant speed according to a preset program, and the control process is accurate, flexible and reliable; the lifting channel 14 corresponds to a plurality of transverse channel layers (specifically including each storage layer 13a or each energy storage layer 12a) stacked and distributed in the positive and negative directions, and each transverse channel layer is respectively provided with a two-dimensional code baffle 9c (specifically, a structural member provided with a two-dimensional code, the shape of which is not limited to a plate shape) in communication connection with the visual sensor 9 b.
Preferably, in the present embodiment, an axle-hung brake 10 is disposed between the double-extension-shaft motor 5 and the transmission unit, the axle-hung brake 10 is in control connection with the variable-frequency controller 6, and performs braking or releases braking according to a command sent by the variable-frequency controller 6; preferably, in the embodiment, the axle brake 10 has a double redundancy brake; the braking states of the axle brake 10 include energy storage braking, power generation braking, emergency braking and safety braking, wherein,
the energy storage braking means that the potential energy load 2 meets the specified energy storage requirement, and the axle-clasping brake 10 executes braking when the frequency conversion controller 6 detects and identifies the corresponding two-dimensional code baffle 9c through the visual sensor 9 b;
the power generation braking means that the potential energy load 2 meets the specified storage requirement, and when the variable frequency controller 6 detects and identifies the two-dimensional code baffle 9c through the visual sensor 9b, the shaft-holding brake 10 executes braking;
the emergency braking is that when the potential energy load 2 is at any position of the lifting channel 14, the shaft-clasping brake 10 performs braking, and specifically, the emergency braking may be used for emergency braking when the double-extension-shaft motor 5 or the generator 3 fails, emergency braking when the variable frequency controller 6 is powered off, emergency braking when the variable frequency controller 6 fails due to program loss, such as over speed, and the like;
the safe braking means that when the potential energy load 2 is at any position of the lifting channel 14, the brake is executed by manually operating the axle-clasping brake 10, and the safe braking is mainly used for working conditions such as dangerous states, maintenance states and the like.
Preferably, in the present embodiment, the variable frequency controller 6 is further provided with an emergency braking resistor for preventing the potential energy load 2 from absorbing an excessive current on the dc bus when the potential energy load exceeds the speed limit, and preventing the voltage from being too high to trip.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment includes only a single embodiment, and such description is for clarity only, and those skilled in the art should make the description as a whole, and the embodiments may be appropriately combined to form other embodiments understood by those skilled in the art.
Claims (10)
1. A gravity energy storage power generation model is characterized by comprising a power generator, a clutch and a double-extension-shaft motor which are coaxially and sequentially connected, wherein,
the generator, the clutch and the double-extension-shaft motor are respectively in control connection with the variable frequency controller;
the double-extension-shaft motor is in transmission connection with a potential energy load, and the potential energy load rises along a positive direction or falls or stops along a negative direction under the driving of the double-extension-shaft motor under the control of the variable frequency controller;
under the control of the variable frequency controller, the clutch is selectively disconnected or locked between the generator and the double-extension-shaft motor, and when the clutch is in a disconnected state, the potential energy load is driven by the double-extension-shaft motor to ascend along the positive direction so as to realize energy storage; when the clutch is in a locking state, the potential energy load is driven by the double-extension-shaft motor to descend along the negative direction, and power generation is realized.
2. The power generation model according to claim 1, wherein the frequency conversion controller is connected to an electric energy doubly-fed unit, wherein the electric energy doubly-fed unit at least comprises an energy storage battery and a public power grid, the energy storage battery provides a low-voltage power supply for the frequency conversion controller in a standby state, and when the frequency conversion controller is in an operating state, the frequency conversion controller processes an alternating current output by the generator and then is connected to the public power grid.
3. The power generation model of claim 2, wherein the doubly-fed electric energy unit further comprises a photovoltaic power generation unit, and power output ends of the photovoltaic power generation unit are respectively connected with the energy storage battery and a public power grid; and the energy storage battery or the public power grid provides a medium-voltage and/or low-voltage power supply for the variable frequency controller in a working state.
4. The power generation model of claim 2, wherein the generator is a variable frequency permanent magnet synchronous motor, which generates three-phase alternating current to enter the variable frequency controller and then is incorporated into the doubly-fed electric power unit; the double-extension-shaft type motor is a variable-frequency permanent magnet synchronous motor, and the torque, the direction and the speed of the double-extension-shaft type motor are controlled by the variable-frequency controller, so that the potential energy load can be accurately displaced according to a preset curve operation instruction.
5. The power generation model of claim 1, wherein the double-extension-shaft motor is in transmission connection with the potential energy load through a transmission unit; the transmission unit comprises a winding drum provided with a lifting rope, the winding drum is connected with the double-extension-shaft motor in an installing mode, and the lower end of the lifting rope is connected with a manipulator used for positioning and transferring the position energy load.
6. The power generation model of claim 5, wherein the robotic arm selectively raises, lowers, or stops within a lifting channel of a bit energy load, wherein,
the manipulator is correspondingly provided with a displacement sensor and a vision sensor, and the displacement sensor is in communication connection with the variable frequency controller;
the lifting channel corresponds to a plurality of transverse channel layers which are distributed in a stacking mode in the positive and negative directions, and each transverse channel layer is provided with a two-dimensional code baffle which is in communication connection with the vision sensor.
7. The power generation model according to claim 5, wherein a shaft-clasping brake is arranged between the double-extension-shaft motor and the transmission unit, the shaft-clasping brake is in control connection with the variable-frequency controller, and the shaft-clasping brake executes braking or releases braking according to a command sent by the variable-frequency controller.
8. The power generation model of claim 7, wherein the states of the axle-suspension brake braking include energy storage braking and power generation braking,/and emergency braking,/and safety braking, wherein,
the energy storage braking means that the potential energy load meets the specified energy storage requirement, and the axle-clasping brake executes braking when the frequency conversion controller detects and identifies the corresponding two-dimensional code baffle through the visual sensor;
the power generation braking means that the potential energy load meets the specified storage requirement, and the axle-holding brake executes braking when the frequency conversion controller detects and identifies the two-dimensional code baffle through the visual sensor;
the emergency braking refers to that when the potential energy load is at any position of a lifting channel, the shaft-holding brake performs braking;
the safe braking means that the shaft-clasping brake is operated to brake through manual operation when the potential energy load is at any position of the lifting channel.
9. The power generation model of claim 8, wherein the axle-hang brake sites have dual redundant brakes; the variable frequency controller is provided with an emergency braking resistor and is used for preventing the potential energy load from absorbing excessive current on a direct current bus when the potential energy load exceeds the speed limit and preventing tripping due to overhigh voltage.
10. A gravity energy storage system is characterized by comprising a gravity energy storage parallel frame fixedly installed on a foundation, wherein the gravity energy storage parallel frame comprises an upper energy storage layer area and a lower energy storage layer area which are distributed at intervals in the positive and negative directions respectively, and a lifting channel used for containing a potential energy load to perform vertical displacement is arranged between the upper energy storage layer area and the lower energy storage layer area;
the upper energy storage layer area comprises a plurality of energy storage layers which are distributed in a stacking manner in the positive and negative directions, the lower energy storage layer area comprises a plurality of storage layers which are distributed in a stacking manner in the positive and negative directions, the potential energy load is selectively positioned in the storage layers or the energy storage layers, and the storage layers and the energy storage layers are both used as transverse channel layers; the gravity energy storage system adopts the power generation model as claimed in one of claims 1 to 9 to realize power generation and energy storage.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210872498.5A CN115116319A (en) | 2022-07-20 | 2022-07-20 | Gravity energy storage power generation model and gravity energy storage system applying same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210872498.5A CN115116319A (en) | 2022-07-20 | 2022-07-20 | Gravity energy storage power generation model and gravity energy storage system applying same |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115116319A true CN115116319A (en) | 2022-09-27 |
Family
ID=83334459
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210872498.5A Pending CN115116319A (en) | 2022-07-20 | 2022-07-20 | Gravity energy storage power generation model and gravity energy storage system applying same |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115116319A (en) |
-
2022
- 2022-07-20 CN CN202210872498.5A patent/CN115116319A/en active Pending
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US20110061976A1 (en) | Battery counterweighted elevator | |
| CN200944575Y (en) | DC busbar supplying crane power system | |
| CN114784830A (en) | Comprehensive physical energy storage system and energy storage method of gravity combined flywheel | |
| CN1945963A (en) | DC bus powered crane power system | |
| CN107528383B (en) | Super capacitor UPS power supply device for mine hoist | |
| CN203294993U (en) | Energy-saving lifting device of steel wire rope type lifting machine for construction | |
| CN112390113A (en) | Construction elevator | |
| CN201400499Y (en) | Passive potential energy speed control escape elevator of civil high-rise building | |
| CN218939130U (en) | Gravity energy storage power generation model and gravity energy storage system using same | |
| EP2539266B1 (en) | Power supply system for rack and pinion lifts and method for powering these | |
| CN115116319A (en) | Gravity energy storage power generation model and gravity energy storage system applying same | |
| CN214900361U (en) | Heavy object lift energy storage power station | |
| CN206221149U (en) | Magnetic suspension goes off course pitching to wind apparatus | |
| CN212225436U (en) | Vertical axis wind turbine wind wheel structure based on horizontal axis wind turbine blade reuse | |
| CN115549268A (en) | Potential energy recovery system of stereoscopic warehouse automation equipment and building method thereof | |
| CN101575063B (en) | Passive-potential energy speed-controlling escape elevator for civil high-rise buildings | |
| CN112366920A (en) | Power supply control method for construction elevator | |
| CN116745227A (en) | Durable pneumatic elevator system and method | |
| CN112573377A (en) | Offshore hydropower station hoisting mechanical system based on hydrogen fuel cell | |
| CN220248261U (en) | Yaw servo device capable of preventing mechanical impact | |
| CN107458957B (en) | Intelligent escalator energy-saving device | |
| Baranidharan et al. | Solar-Powered Gearless Elevator Drive Control Using Four Quadrant DC to DC Converter System | |
| CN201172608Y (en) | Weight dropper type electricity breaking emergency hoisting control device | |
| CN214167148U (en) | Offshore hydropower station hoisting mechanical system based on hydrogen fuel cell | |
| CN214527755U (en) | Blade hoisting device of wind driven generator |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |