CN220581202U - Gravity and compressed gas integrated energy storage device - Google Patents
Gravity and compressed gas integrated energy storage device Download PDFInfo
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- CN220581202U CN220581202U CN202322324411.3U CN202322324411U CN220581202U CN 220581202 U CN220581202 U CN 220581202U CN 202322324411 U CN202322324411 U CN 202322324411U CN 220581202 U CN220581202 U CN 220581202U
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- gravity
- energy storage
- compressed gas
- storage device
- integrated energy
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- 230000005484 gravity Effects 0.000 title claims abstract description 54
- 238000004146 energy storage Methods 0.000 title claims abstract description 38
- 230000010354 integration Effects 0.000 abstract 1
- 238000000034 method Methods 0.000 description 13
- 238000010248 power generation Methods 0.000 description 13
- 230000005611 electricity Effects 0.000 description 5
- 230000000087 stabilizing effect Effects 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Abstract
The application provides a gravity and compressed gas integration energy storage device, include: the vertical holding cavity is provided with a gravity piston in a sliding manner along the vertical direction. The bottom intercommunication that holds the chamber is equipped with the trunk line, is connected with air compressor, steam turbine and bleed valve on the trunk line, and gravity piston passes through the haulage rope and links to each other with generating set, and holds the top in chamber and be equipped with locking structure for fixed haulage rope and gravity piston. The scheme effectively improves the utilization rate of the stored energy.
Description
Technical Field
The utility model belongs to the technical field of electric power energy storage and discharge, and particularly relates to a gravity and compressed gas integrated energy storage device.
Background
The gravity energy storage belongs to mechanical energy storage, the energy storage medium mainly comprises solid matters and water, and the basic principle of the gravity energy storage is to lift the energy storage medium based on height fall, so that the charging and discharging processes of the energy storage system are completed. The conventional gravity energy storage is to use a motor to apply work and cooperate with a speed change device and a cable to vertically lift a heavy object to store energy, and when energy is needed, the gravity applied by the heavy object is converted into kinetic energy to drive a generator to generate electricity, for example, a patent with the application number of 202210923119.0 discloses a gravity energy storage power generation device, the wind power generation mechanism and/or a solar photovoltaic power generation plate are used for providing electric energy for starting a winch mechanism, the counterweight is lifted up to a preset height through a steel wire rope and a lifting appliance, and when the electric energy is needed to be discharged, the counterweight is used for pulling a transmission gear set to move, so that the generator is driven to generate electricity. The conventional compressed gas energy storage is to drive an air compressor to compress and store gas by using electric energy, release the compressed air to push a turbine to generate electricity when the energy is needed, for example, patent application number 202010352645.7 discloses a gravity compressed air energy storage speed stabilizing device, and the device is driven to compress and operate by using surplus electric power so as to generate compressed air, and the compressed air is stably pushed out by using the gravity of a gravity piston during power generation, and is output at a constant speed so as to be used for stabilizing the power generation. The existing energy storage device generally adopts only one of the two energy storage modes, and the utilization rate of electric energy is not high.
Disclosure of Invention
In order to solve the defects in the prior art, the utility model provides the gravity and compressed gas integrated energy storage device, so that energy is stored, power generation and work application for two times are realized, and the utilization rate of stored energy is effectively improved.
In order to achieve the object of the utility model, the following scheme is adopted:
a gravity and compressed gas integrated energy storage device comprising: the vertical holding cavity is provided with a gravity piston in a sliding manner along the vertical direction.
The bottom intercommunication that holds the chamber is equipped with the trunk line, is connected with air compressor, steam turbine and bleed valve on the trunk line, and gravity piston passes through the haulage rope and links to each other with generating set, and holds the top in chamber and be equipped with locking structure for fixed haulage rope and gravity piston.
The utility model has the beneficial effects that: the energy release process utilizes the release compressed gas and the traction force generated by the gravity piston to complete the second power generation, thereby improving the utilization rate of energy. In addition, the scheme utilizes compressed gas to lift the gravity piston to replace the traditional process of dragging and lifting the weight by the motor so as to reduce the power consumption during energy storage.
Drawings
The drawings described herein are for illustration of selected embodiments only and not all possible implementations, and are not intended to limit the scope of the utility model.
Fig. 1 shows a schematic overall structure of the present application.
The marks in the figure: the device comprises a containing cavity 1, a limiting ring 11, a gravity piston 2, a traction rope 21, a main pipeline 3, a relief valve 31, an air compressor 4, a steam turbine 5, a generator set 6 and a speed changing device 7.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present utility model more apparent, the following detailed description of the embodiments of the present utility model will be given with reference to the accompanying drawings, but the described embodiments of the present utility model are some, but not all embodiments of the present utility model.
As shown in fig. 1, a gravity and compressed gas integrated energy storage device includes: the vertical accommodating cavity 1 is provided with a gravity piston 2 in a sliding manner along the vertical direction. The bottom intercommunication that holds chamber 1 is equipped with trunk line 3, is connected with air compressor 4, steam turbine 5 and bleed valve 31 on the trunk line 3, and gravity piston 2 passes through haulage rope 21 and links to each other with generating set 6, and holds the top in chamber 1 and be equipped with locking structure for fixed haulage rope and gravity piston 2.
In the energy storage process, solar energy or wind energy is utilized to generate electricity or electric power with surplus valley sections of the electric network is utilized to drive the air compressor 4, the air compressor 4 compresses air below the gravity piston 2 in the accommodating cavity 1, the gravity piston 2 can be lifted upwards in the compressed air storage process, so that the gravity piston 2 is enabled to store energy, and when the gravity piston 2 is lifted to a preset height and the air pressure of the compressed air reaches a preset value, the air compressor 4 is turned off, so that the energy storage work is completed.
The energy release process, the first power generation process, the turbine 5 is driven to operate by compressed air, the turbine 5 converts the compressed air into kinetic energy to drive the generator to work, the generator can be a generator independently connected with the turbine 5 or can be connected with the generator set 6, but the turbine 5 and the connection structure between the traction rope 21 and the generator set 6 are mutually independent, so that the gravity piston 2 is prevented from moving when the turbine 5 drives the generator set 6 to generate power; in the second power generation process, when compressed gas discharged from the accommodating cavity 1 cannot continuously push the steam turbine 5 to operate, the connection between the main pipeline 3 and the steam turbine 5 is closed, the air release valve 31 is opened to discharge redundant gas in the accommodating cavity 1, the pressure in the accommodating cavity 1 is balanced with the atmospheric pressure, then the traction rope 21 is released, traction force is generated when the gravity piston 2 falls down, the generator set 6 is driven to operate through the traction rope 21, and accordingly the gas in the accommodating cavity 1 is discharged from the air release valve 31 in the second power generation gravity piston 2 falling process.
The scheme combines the common points of the traditional gravity energy storage and the compressed gas energy storage, combines the two energy storage systems, integrates a channel for the up and down movement of a counterweight object in the gravity energy storage system with a gas storage space for the compressed gas energy storage, realizes comprehensive utilization, and utilizes the compressed gas to lift the gravity piston 2, thereby replacing the traditional process of traction and lifting of the heavy object by a motor, and reducing the power consumption during energy storage; in the energy release process, compressed gas is released to complete a primary power generation process, traction force generated by the gravity piston 2 is converted into kinetic energy, and a secondary power generation process is completed, so that secondary power generation can be realized by primary energy storage, the utilization rate of energy sources is improved, air inlet and air outlet of the accommodating cavity 1 are realized by the same pipeline, and the structure of the energy storage device is simplified.
Preferably, as shown in fig. 1, the traction rope 21 is connected to the speed changing device 7 through a winch, the speed changing device 7 is connected to the generator set 6, and the speed changing device 7 is used for converting the traction force generated by the gravity piston 2 into a rotation speed suitable for generating electricity by the generator set 6.
It is further preferred that the gear shifting device 7 has a locking mechanism for securing the gravity piston 2.
Preferably, the accommodating cavity 1 is arranged below the ground to reduce the overall height of the energy storage device, and meanwhile, the safety of the structure of the accommodating cavity 1 can be ensured, so that the accommodating cavity 1 is prevented from being damaged by personnel or other equipment when burst.
Preferably, the air compressor 4, the steam turbine 5 and the generator set 6 are all arranged on the ground, so that the installation and the overhaul are convenient.
Preferably, as shown in fig. 1, a limiting ring 11 is arranged on the inner wall of the accommodating cavity 1 corresponding to the upper part of the gravity piston 2, and is used for limiting the lifting height of the gravity piston 2, and simultaneously, the tightness between the gravity piston 2 and the inner wall of the accommodating cavity 1 can be further enhanced.
The foregoing description of the preferred embodiments of the utility model is merely exemplary and is not intended to be exhaustive or limiting of the utility model. It will be understood by those skilled in the art that various changes may be made and equivalents may be substituted for elements thereof without departing from the scope of the utility model.
Claims (6)
1. A gravity and compressed gas integrated energy storage device comprising: a vertical accommodating cavity (1) with a gravity piston (2) sliding along the vertical direction, characterized in that,
the bottom intercommunication that holds chamber (1) is equipped with trunk line (3), is connected with air compressor (4), steam turbine (5) and bleed valve (31) on trunk line (3), and gravity piston (2) link to each other with generating set (6) through haulage rope (21), and holds the top in chamber (1) and be equipped with locking structure for fixed haulage rope and gravity piston (2).
2. The gravity and compressed gas integrated energy storage device according to claim 1, characterized in that the traction rope (21) is connected to the speed change device (7) by a winch, the speed change device (7) being connected to the generator set (6).
3. The gravity and compressed gas integrated energy storage device according to claim 2, characterized in that the speed change device (7) has a locking mechanism for securing the gravity piston (2).
4. The gravity and compressed gas integrated energy storage device according to claim 1, characterized in that the receiving chamber (1) is provided under the ground.
5. The gravity and compressed gas integrated energy storage device according to claim 1, wherein the air compressor (4), the steam turbine (5) and the generator set (6) are all arranged on the ground.
6. The gravity and compressed gas integrated energy storage device according to claim 1, wherein a limit ring (11) is arranged on the inner wall of the accommodating cavity (1) corresponding to the upper part of the gravity piston (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322324411.3U CN220581202U (en) | 2023-08-29 | 2023-08-29 | Gravity and compressed gas integrated energy storage device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322324411.3U CN220581202U (en) | 2023-08-29 | 2023-08-29 | Gravity and compressed gas integrated energy storage device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220581202U true CN220581202U (en) | 2024-03-12 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322324411.3U Active CN220581202U (en) | 2023-08-29 | 2023-08-29 | Gravity and compressed gas integrated energy storage device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220581202U (en) |
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2023
- 2023-08-29 CN CN202322324411.3U patent/CN220581202U/en active Active
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