CN117134378A - Gravity energy storage system and method based on mine tailings - Google Patents
Gravity energy storage system and method based on mine tailings Download PDFInfo
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- CN117134378A CN117134378A CN202310850200.5A CN202310850200A CN117134378A CN 117134378 A CN117134378 A CN 117134378A CN 202310850200 A CN202310850200 A CN 202310850200A CN 117134378 A CN117134378 A CN 117134378A
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- energy storage
- gravity energy
- gravity
- generator motor
- traction unit
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- 238000004146 energy storage Methods 0.000 title claims abstract description 105
- 230000005484 gravity Effects 0.000 title claims abstract description 90
- 238000000034 method Methods 0.000 title claims abstract description 13
- 239000000945 filler Substances 0.000 claims abstract description 17
- 238000005381 potential energy Methods 0.000 claims abstract description 7
- 229910000831 Steel Inorganic materials 0.000 claims description 9
- 239000010959 steel Substances 0.000 claims description 9
- 230000005611 electricity Effects 0.000 claims description 8
- 239000004567 concrete Substances 0.000 claims description 6
- 229920000049 Carbon (fiber) Polymers 0.000 claims description 5
- 239000004917 carbon fiber Substances 0.000 claims description 5
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims description 5
- 238000010248 power generation Methods 0.000 claims description 5
- 229910001018 Cast iron Inorganic materials 0.000 claims description 3
- 230000009471 action Effects 0.000 claims description 3
- 238000007599 discharging Methods 0.000 claims description 3
- 239000003822 epoxy resin Substances 0.000 claims description 3
- 239000011152 fibreglass Substances 0.000 claims description 3
- 239000011211 glass fiber reinforced concrete Substances 0.000 claims description 3
- 229920000647 polyepoxide Polymers 0.000 claims description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims 1
- 229910052799 carbon Inorganic materials 0.000 claims 1
- 239000000835 fiber Substances 0.000 claims 1
- 239000002893 slag Substances 0.000 abstract description 3
- 239000002994 raw material Substances 0.000 abstract description 2
- 238000005516 engineering process Methods 0.000 description 7
- 230000005540 biological transmission Effects 0.000 description 5
- 239000000463 material Substances 0.000 description 4
- 229910001385 heavy metal Inorganic materials 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 1
- 230000001133 acceleration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000011217 control strategy Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000012983 electrochemical energy storage Methods 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 239000011133 lead Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- 239000011701 zinc Substances 0.000 description 1
- 229910052725 zinc Inorganic materials 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
- H02J3/28—Arrangements for balancing of the load in a network by storage of energy
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
- H02B1/00—Frameworks, boards, panels, desks, casings; Details of substations or switching arrangements
- H02B1/26—Casings; Parts thereof or accessories therefor
- H02B1/50—Pedestal- or pad-mounted casings; Parts thereof or accessories therefor
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
- H02B1/00—Frameworks, boards, panels, desks, casings; Details of substations or switching arrangements
- H02B1/54—Anti-seismic devices or installations
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J15/00—Systems for storing electric energy
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
Abstract
The invention belongs to the technical field of gravitational potential energy storage, and particularly discloses a gravity energy storage system and method based on mine tailings. The device comprises a base, wherein a plurality of columns of stand columns are uniformly arranged above the base, gaps between every two adjacent stand columns are energy storage wells, each stand column is provided with a generator motor, each generator motor is connected with a power grid, the top of each energy storage well is provided with a traction unit, each energy storage well is internally provided with a gravity energy storage block, the gravity energy storage blocks are fixedly connected with the traction units, tailing fillers are arranged in the gravity energy storage blocks, and each generator motor is matched with each traction unit; the invention uses the tailing slag as the raw material of the gravity energy storage block, and stores the redundant electric power of the power grid by matching the generator motor, the traction unit and the gravity energy storage block, thereby cleanly and environmentally-friendly utilizing the tailing resource.
Description
Technical Field
The invention belongs to the technical field of gravitational potential energy storage, and particularly relates to a gravity energy storage system and method based on mine tailings.
Background
With the rapid development of the power industry in China, renewable energy sources represented by wind energy and solar energy are rapidly developed, but the development of new energy technology is greatly limited by the non-uniformity of spatial distribution and the instability of supply time. The 4 novel power grid level gravity energy storage technologies which are emerging in recent international years comprise an American GP gravity piston driving type pumped storage technology, an mountain road type gravity energy storage technology designed by Ares corporation in the United states, a tower crane type gravity energy storage technology designed by Swiss EV corporation and a mine type gravity energy storage battery designed by Gravitypower corporation in the United kingdom. Compared with the traditional electrochemical energy storage method, the novel gravity energy storage technology has the advantages of safety, large energy storage capacity, small influence on environment and the like, and compared with the traditional pumped storage gravity energy storage method, the novel gravity energy storage technology remarkably reduces the dependence on geographic conditions and water resources, and has wide application prospect.
At present, a large amount of mine tailings exist in China, because the tailings contain harmful metal elements such as heavy metals or lead and zinc, if the tailings are piled up or buried, the tailings are wasted, and the heavy metal elements in the tailings destroy the surrounding environment, so that the surrounding water environment is polluted.
Disclosure of Invention
The invention aims to provide a gravity energy storage system and a gravity energy storage method based on mine tailings, which are used for solving the technical problems that the existing mine tailings are difficult to utilize and process.
In order to achieve the above purpose, the invention adopts the following technical scheme:
in a first aspect, the invention provides a gravity energy storage system based on mine tailings, which comprises a base, wherein a plurality of columns are uniformly arranged above the base, gaps between every two adjacent columns are energy storage wells, each column is provided with a generator motor, the generator motor is connected with a power grid, the top of each energy storage well is provided with a traction unit, each energy storage well is internally provided with a gravity energy storage block, the gravity energy storage blocks are fixedly connected with the traction unit, tailings fillers are arranged in the gravity energy storage blocks, and the generator motors are matched with the traction unit;
when the generator motor is used as a generator, the gravity energy storage block moves downwards, and the traction unit drives the generator motor to generate electricity and is integrated into a power grid;
when the generator motor is used as a motor, the generator motor drives the traction unit, and the traction unit drives the gravity energy storage block to move upwards.
The invention further improves that: the generator motor is a split generator motor or an integrated generator motor.
The invention further improves that: the traction unit adopts one of friction transmission and hydraulic transmission.
The invention further improves that: the base is internally filled with a plurality of tailing fillers, each upright post is internally filled with a plurality of tailing fillers, and concrete layers are poured outside the tailing fillers.
The invention further improves that: the gravity energy storage block further comprises a shell, wherein the shell is wrapped on the outer side of the tailing filler, and the shell is made of any one or more of cast iron, steel plates, epoxy resin, carbon fiber, glass fiber reinforced plastic or reinforced concrete.
The invention further improves that: the gravity energy storage block is in any one of a cube, a cuboid, a cylinder, a sphere, a cone, a polyhedron or a saddle.
The invention further improves that: the traction unit comprises a rotating shaft and a traction rope, wherein the rotating shaft is connected with the motor generator, one end of the traction rope is fixed on the rotating shaft, and the other end of the traction rope is fixedly connected with the gravity energy storage block.
The invention further improves that: the traction rope is any one of a steel cable, a carbon fiber cable or a steel wire rope.
The invention further improves that: and a buffer cushion is arranged at the bottom of the gravity energy storage block.
In a second aspect, the invention provides a gravity energy storage method based on mine tailings, comprising the following steps:
when gravity energy storage is carried out, the power generation motor drives the traction unit by using power supply of the power grid, and the traction unit drives the gravity energy storage block to move upwards so as to convert electric energy of the power grid into gravitational potential energy;
during discharging, the gravity energy storage block moves downwards under the action of gravity, the traction unit drives the generator motor to generate electricity, and the generated energy is integrated into a power grid.
Compared with the prior art, the invention has at least the following beneficial technical effects:
1. the invention uses the tailing slag as the raw material of the gravity energy storage block, and stores the redundant electric power of the power grid by matching the generator motor, the traction unit and the gravity energy storage block, thereby cleanly and environmentally-friendly utilizing the tailing resource;
2. the invention uses the tailing slag as the filling material of the upright post and the base, thereby cleanly and environmentally-friendly utilizing the tailing resource;
3. according to the invention, the buffer cushion is arranged to avoid the tailing leakage caused by the damage of the base;
4. the gravity energy storage system has the advantages of simple structure, simple control strategy and low engineering implementation difficulty.
5. The gravity energy storage system has a service life as long as 30 years, and can avoid the problems of short service life of the energy storage of the electrochemical cell, difficult treatment of the waste cell and pollution.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention.
In the drawings:
FIG. 1 is a schematic diagram of a gravity energy storage system based on mine tailings of the present invention;
in the figure: 1. a base; 2. an energy storage well; 3. a column; 4. a gravity energy storage block; 5. a generator motor; 6. a traction unit; 7. tailing filling.
Detailed Description
The invention will be described in detail below with reference to the drawings in connection with embodiments. It should be noted that, without conflict, the embodiments of the present invention and features of the embodiments may be combined with each other.
The following detailed description is exemplary and is intended to provide further details of the invention. Unless defined otherwise, all technical terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments in accordance with the invention.
Example 1
A gravity energy storage system based on mine tailings, as shown in fig. 1, comprises a base 1, a stand column 3, a gravity energy storage block 4, a generator motor 5, a traction unit 6 and a tailings filling 7;
the base 1 is arranged on the ground, a plurality of columns 3 are uniformly arranged on the upper end surface of the base 1, each column comprises a plurality of columns 3 with the same interval, a generator motor 5 is fixed on each column 3, a gap between two adjacent columns 3 in the same column is an energy storage well 2, and a traction unit 6 is arranged at the top of the energy storage well 2;
the generator motor 5 is electrically connected with a power grid, and the generator motor 5 drives the traction unit 6 by using the power grid;
the traction unit 6 drives the motor generator 5 to generate electricity, and the generated electricity is integrated into the power grid through the motor generator 5;
the gravity energy storage block 4 is arranged in the energy storage well 2, the top of the gravity energy storage block 4 is fixedly connected with the traction unit 6, and the gravity energy storage block 4 is driven to move up and down in the energy storage well 2 through the traction unit 6;
specifically, the base 1 is cuboid, cylinder or other three-dimensional shapes, a plurality of tailing fillers 7 are filled in the base 1, and the outer sides of the tailing fillers 7 are formed by concrete pouring;
specifically, the upright post 3 is a cuboid, a cylinder or other columns, a plurality of tailing fillers 7 are filled in the upright post 3, and the outer sides of the tailing fillers 7 are formed by concrete pouring; the tailing filling material 7 is wrapped by a concrete pouring method, so that not only is the construction resource saved by using the tailing filling material 7, but also the tailing filling material 7 is isolated from the outside by the concrete, and the environmental pollution is avoided.
Specifically, the gravity energy storage block 4 comprises a tailing filler and a shell, the outer side of the tailing filler wraps the shell to form the gravity energy storage block 4, and the shell is made of any one or more of cast iron, steel plates, epoxy resin, carbon fiber, glass fiber reinforced plastic or reinforced concrete;
the gravity energy storage block 4 is in any shape such as a cube, a cuboid, a cylinder, a sphere, a cone, a polyhedron, a saddle shape and the like.
Specifically, the motor generator 5 is a split independent generator and an independent motor, or an integrated motor designed for the integration of power generation and electric functions;
specifically, the traction unit 6 adopts any one of friction transmission and hydraulic transmission;
specifically, the traction unit 6 adopts friction transmission, the traction unit 6 comprises a rotating shaft and a traction rope, the rotating shaft is connected with the power output end of the power generation motor 5, one end of the traction rope is fixed on the rotating shaft, the other end of the traction rope is fixed on the upper end face of the gravity energy storage block 4, the power generation motor 5 drives the rotating shaft to rotate, and the gravity energy storage block 4 is driven to move up/down through the traction rope;
specifically, the traction rope can be selected from a steel cable, a carbon fiber cable, a steel wire rope or the like;
specifically, the traction unit can simultaneously traction a plurality of connected gravity energy storage blocks 4, and the number of the gravity energy storage blocks 4 is specifically determined according to parameters such as an energy storage target, traction unit output, and generator motor output;
specifically, the bottom of gravity energy storage piece 4 is equipped with the blotter, reduces the damage to base 1 of gravity energy storage piece 4 whereabouts in-process through the blotter.
Specifically, the energy storage amount calculation formula is as follows:
G＝n*mgh
wherein: g: total weight of stored energy in kJ;
n: the number of weight energy storage blocks;
m: the mass of the gravity energy storage block;
g: acceleration of gravity, 9.8N/kg;
h: the height variation of the gravity energy storage block is unit meter.
Example 2
The gravity energy storage method based on the mine tailings comprises the following steps of:
when gravity energy storage is carried out, the generator motor 5 utilizes the power supply of the power grid to drive the traction unit 6, the traction unit 6 drives the gravity energy storage block 4 to move upwards, the electric energy of the power grid is converted into gravitational potential energy, and the high potential energy of the gravity energy storage block 4 is utilized to store energy;
during discharging, the gravity energy storage block 4 moves downwards under the action of gravity, the traction unit 6 drives the generator motor 5 to generate electricity, and the generated energy is integrated into a power grid, so that the function of generating electricity by using the high potential energy of the gravity energy storage block 4 is realized;
the gravity energy storage load responds to the demand of power grid peak regulation and frequency modulation energy storage through the up-and-down movement of the gravity energy storage block 4.
It will be appreciated by those skilled in the art that the present invention can be carried out in other embodiments without departing from the spirit or essential characteristics thereof. Accordingly, the above disclosed embodiments are illustrative in all respects, and not exclusive. All changes that come within the scope of the invention or equivalents thereto are intended to be embraced therein.
Finally, it should be noted that: the above embodiments are only for illustrating the technical aspects of the present invention and not for limiting the same, and although the present invention has been described in detail with reference to the above embodiments, it should be understood by those of ordinary skill in the art that: modifications and equivalents may be made to the specific embodiments of the invention without departing from the spirit and scope of the invention, which is intended to be covered by the claims.
Claims (10)
1. The gravity energy storage system based on mine tailings is characterized by comprising a base (1), wherein a plurality of columns (3) are uniformly arranged above the base (1), gaps between every two adjacent columns (3) are energy storage wells (2), each column (3) is provided with a generator motor (5), each generator motor (5) is connected with a power grid, the top of each energy storage well is provided with a traction unit (6), each energy storage well (2) is internally provided with a gravity energy storage block (4), the gravity energy storage blocks (4) are fixedly connected with the traction units, tailings fillers (7) are arranged in the gravity energy storage blocks (4), and the generator motors (5) are matched with the traction units (6);
when the generator motor (5) is used as a generator, the gravity energy storage block (4) moves downwards, and the traction unit (6) drives the generator motor (5) to generate electricity and be integrated into a power grid;
when the generator motor (5) is used as a motor, the generator motor (5) drives the traction unit (6), and the traction unit (6) drives the gravity energy storage block (4) to move upwards.
2. A gravity energy storage system based on mine tailings according to claim 1, wherein the generator motor (5) is a split generator motor or an integrated generator motor.
3. A gravity energy storage system based on mine tailings according to claim 1, wherein the traction unit (6) employs one of friction drive or hydraulic drive.
4. The gravity energy storage system based on mine tailings according to claim 1, wherein a plurality of tailings fillers (7) are filled in the base (1), a plurality of tailings fillers (7) are filled in each upright post (3), and concrete layers are poured outside the tailings fillers.
5. The mine tailing utilizing gravity energy storage system according to claim 1, wherein the gravity energy storage block (4) further comprises a housing, the housing is wrapped outside the tailing filler (7), and the housing is made of any one or more of cast iron, steel plate, epoxy resin, carbon fiber, glass fiber reinforced plastic or reinforced concrete.
6. The gravity energy storage system based on mine tailings according to claim 1, wherein the gravity energy storage block (4) is any one of square, cuboid, cylinder, sphere, cone, polyhedron or saddle type in shape.
7. The gravity energy storage system based on mine tailings according to claim 1, wherein the traction unit (1) comprises a rotating shaft and a traction rope, the rotating shaft is connected with the motor generator (5), one end of the traction rope is fixed on the rotating shaft, and the other end of the traction rope is fixedly connected with the gravity energy storage block (4).
8. The gravity energy storage system based on mine tailings of claim 1 wherein the haulage rope is any one of a steel cable, a carbon fibre cable or a steel wire rope.
9. A gravity energy storage system based on mine tailings according to claim 1, wherein,
the bottom of the gravity energy storage block (4) is provided with a buffer cushion.
10. A gravity energy storage method based on mine tailings, which is based on the gravity energy storage system based on mine tailings according to any one of claims 1 to 7, and is characterized by comprising the following steps:
when gravity energy storage is carried out, the power generation motor (5) utilizes the power supply of the power grid to drive the traction unit (6), and the traction unit (6) drives the gravity energy storage block (4) to move upwards so as to convert the electric energy of the power grid into gravitational potential energy;
during discharging, the gravity energy storage block (4) moves downwards under the action of gravity, and the traction unit (6) drives the generator motor (5) to generate electricity and the generated energy is integrated into a power grid.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310850200.5A CN117134378A (en) | 2023-07-11 | 2023-07-11 | Gravity energy storage system and method based on mine tailings |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310850200.5A CN117134378A (en) | 2023-07-11 | 2023-07-11 | Gravity energy storage system and method based on mine tailings |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117134378A true CN117134378A (en) | 2023-11-28 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310850200.5A Pending CN117134378A (en) | 2023-07-11 | 2023-07-11 | Gravity energy storage system and method based on mine tailings |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117134378A (en) |
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2023
- 2023-07-11 CN CN202310850200.5A patent/CN117134378A/en active Pending
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