CN117552942A - High-efficiency gravity energy storage power generation system - Google Patents
High-efficiency gravity energy storage power generation system Download PDFInfo
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- CN117552942A CN117552942A CN202311847642.0A CN202311847642A CN117552942A CN 117552942 A CN117552942 A CN 117552942A CN 202311847642 A CN202311847642 A CN 202311847642A CN 117552942 A CN117552942 A CN 117552942A
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- 238000004146 energy storage Methods 0.000 title claims abstract description 305
- 238000010248 power generation Methods 0.000 title claims abstract description 149
- 230000005484 gravity Effects 0.000 title claims abstract description 32
- 230000005540 biological transmission Effects 0.000 claims abstract description 77
- 238000006243 chemical reaction Methods 0.000 claims abstract description 36
- 230000000903 blocking effect Effects 0.000 claims description 48
- 230000033001 locomotion Effects 0.000 claims description 17
- 238000013016 damping Methods 0.000 claims description 9
- 230000000712 assembly Effects 0.000 claims description 6
- 238000000429 assembly Methods 0.000 claims description 6
- 229910000831 Steel Inorganic materials 0.000 claims description 5
- 239000010959 steel Substances 0.000 claims description 5
- 229910000639 Spring steel Inorganic materials 0.000 claims description 4
- 230000005611 electricity Effects 0.000 abstract description 12
- 238000005381 potential energy Methods 0.000 description 20
- 238000010586 diagram Methods 0.000 description 6
- 238000000034 method Methods 0.000 description 6
- 230000008569 process Effects 0.000 description 5
- 238000010276 construction Methods 0.000 description 3
- 230000007704 transition Effects 0.000 description 3
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- 238000005452 bending Methods 0.000 description 2
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- 230000003068 static effect Effects 0.000 description 1
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03G—SPRING, WEIGHT, INERTIA OR LIKE MOTORS; MECHANICAL-POWER PRODUCING DEVICES OR MECHANISMS, NOT OTHERWISE PROVIDED FOR OR USING ENERGY SOURCES NOT OTHERWISE PROVIDED FOR
- F03G3/00—Other motors, e.g. gravity or inertia motors
- F03G3/087—Gravity or weight motors
- F03G3/094—Gravity or weight motors specially adapted for potential energy power storage stations; combinations of gravity or weight motors with electric motors or generators
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Abstract
The invention discloses a high-efficiency gravity energy storage power generation system, which comprises an energy storage body, two storage yards, a lifting power generation device and a control device, wherein each storage yard comprises a plurality of energy storage rails, two adjacent energy storage rails are connected end to end through a rail conversion power generation device, and a damper is arranged on each energy storage rail; the track conversion power generation device comprises a frame, a chain wheel and chain assembly and a power generation assembly, wherein one outer chain plate with the same length of the chain is L-shaped, a transmission support track is arranged between an upper storage yard and a lower storage yard, one end of the transmission support track is connected with one energy storage track with the highest elevation of the upper storage yard, and the other end of the transmission support track is connected with one energy storage track with the lowest elevation of the lower storage yard; the lifting power generation device adopts a structure of mutually staggered relay type. The invention can increase the storage of the energy storage body to the greatest extent in a limited space, does not drive the energy storage body to move, reduces the electricity cost, greatly improves the power generation efficiency, and is suitable for storing the energy storage body for gravity energy storage power generation.
Description
Technical Field
The invention relates to a gravity energy storage power generation system, in particular to a high-efficiency gravity energy storage power generation system.
Background
At present, the new development direction of the electric power system in China mainly comprises an energy system mainly used for photovoltaic power generation and an energy storage system mainly used for physical conversion, and the physical energy storage system mainly comprises pumped storage, gravity storage and compressed air storage. The gravity energy storage can improve the power generation rate by setting the specific gravity of the heavy object, so that the gravity energy storage device has a good popularization prospect. The gravity energy storage is to lift the weight to a certain height and store the weight in a storage yard to form high potential energy, when electricity is needed, the weight is released to a position with lower topography, and the releasing process drives the generator to work so as to convert the potential energy into electric energy.
The gravity energy storage power generation system comprises an energy storage weight, a lifting power generation device and an upper storage yard and a lower storage yard for storing the energy storage weight. In the prior art, the lifting energy storage path of the heavy object is the same as the descending release energy path of the heavy object, and after the gradient of the path is fixed, the power generation efficiency can not change greatly any more, and as the path can not be prolonged any more, the high potential energy can not be released to the maximum extent, and the power generation efficiency is reduced.
And the storage yard in the prior art is provided with one or more storage rails at the position with flat high-level and low-level topography, the storage rails are laid out as a layer for carpets, the energy storage body is driven by the power source driving chain rope to reach the designated storage position, when a heavy object needs to be released, the energy storage body is driven to the position needing to be released by the power source, in the process, the power source needs to consume certain electric energy to drive the energy storage body to move, the conversion rate is reduced, the operation cost is increased, the energy storage bodies are sequentially arranged, the larger area is occupied, and the construction or transformation cost is increased.
Disclosure of Invention
In order to solve the defects in the prior art, the invention aims to provide a high-efficiency gravity energy storage power generation system so as to achieve the purposes of maximally utilizing potential energy, improving power generation efficiency and reducing operation cost.
In order to achieve the above purpose, the technical scheme adopted by the invention is as follows:
the system comprises an energy storage body, two storage yards, a lifting power generation device and a control device, wherein the two storage yards have the same structure, one storage yard is located at a high-altitude position and is an upper storage yard, and the other storage yard is located at a low-altitude position and is a lower storage yard;
the storage yard comprises a plurality of energy storage rails, each energy storage rail is obliquely arranged to form a structure which is continuously bent along the vertical direction, two adjacent energy storage rails are connected end to end through a rail conversion power generation device, and a plurality of dampers for limiting the movement speed and the position of an energy storage body are arranged on the energy storage rails at intervals;
the track conversion power generation device comprises a frame, a chain wheel and chain assembly and a power generation assembly, wherein the chain wheel and chain assembly is rotatably connected to the frame, the power input end of the power generation assembly is assembled and connected with the chain wheel and chain assembly, one outer chain plate with the same length at intervals in the chain wheel and chain assembly is L-shaped, and the L-shaped outer chain plate is intersected with the projection of an energy storage track, so that an energy storage body is transited from a high-position energy storage track to a low-position energy storage track through the L-shaped outer chain plate;
a transmission support rail is arranged between the upper storage yard and the lower storage yard, one end of the transmission support rail is connected with one energy storage rail with the highest elevation of the upper storage yard, the other end of the transmission support rail is connected with one energy storage rail with the lowest elevation of the lower storage yard, the one energy storage rail with the lowest elevation of the upper storage yard is connected to the transmission support rail through a first conversion device, and the one energy storage rail with the highest elevation of the lower storage yard is connected to the transmission support rail through a second conversion device;
the energy storage body is arranged on the energy storage track and the transmission support track in a sliding manner;
the lifting power generation devices are provided with a plurality of lifting power generation devices, the lifting power generation devices at two ends are corresponding to two ends of the transmission support rail and are used for driving the energy storage bodies to move from the lower storage yard to the upper storage yard along the transmission support rail to store energy, and the lifting power generation devices are driven to generate power when the energy storage bodies descend.
As a limitation of the present invention, the inclination of the energy storage rail to the horizontal ground is 1 to 5 °.
As a further limitation of the invention, the damper comprises a damping sheet fixedly arranged on the energy storage rail, and the damping sheet is arranged obliquely upwards along the movement direction of the energy storage body, and the damping sheet is made of spring steel.
As a second limitation of the present invention, the lift power generation device includes two lift power generation bodies and two lift chains;
the lifting power generation body comprises a bracket, two rotating shafts rotatably arranged on the bracket and a transmission switching gear box connected with the two rotating shafts respectively, wherein the two rotating shafts are arranged at intervals, the two rotating shafts are connected with the transmission switching gear box through a chain wheel assembly, and the transmission switching gear box is connected with a motor and a generator respectively; a lifting chain wheel is fixedly arranged on each rotating shaft of the lifting power generation body, one lifting chain is sleeved on the two lifting chain wheels on one side of the two lifting power generation bodies, and the other lifting chain is sleeved on the two lifting chain wheels on the other side of the two lifting power generation bodies;
the two rotating shafts of the lifting power generation body are respectively provided with a relay lifting chain wheel, the two relay lifting chain wheels are sleeved with relay lifting chains, and the two relay lifting chains are positioned on the inner sides of the lifting chains to realize relay staggered connection of the two lifting power generation devices; a plurality of hook components used for hanging the two sides of the energy storage body are uniformly arranged on the lifting chain at intervals.
As a limitation of the present invention, the hook assembly includes an L-shaped first hook and a T-shaped second hook; the first hook comprises a first fixed plate and a first blocking plate fixedly arranged on the first fixed plate, and the first fixed plate is fixedly arranged on one outer chain plate of the lifting chain; the second hook comprises a second fixed plate and a second blocking plate fixedly arranged on the second fixed plate, one end of the second fixed plate is fixedly arranged on an outer chain plate provided with the first fixed plate, and the other end of the second fixed plate is fixedly arranged on the other outer chain plate adjacent to the outer chain plate;
the first blocking plate and the second blocking plate are overlapped with each other, and an included angle between the second blocking plate and the second fixing plate is smaller than an included angle between the first blocking plate and the first fixing plate.
As a further limitation of the invention, the outer chain plates at the corresponding positions of the inner side and the outer side of the lifting chain are fixedly provided with hook assemblies.
As a still further limitation of the present invention, the angle between the first fixing plate and the first blocking plate is 60 °, and the angle between the second fixing plate and the second blocking plate is 40 °.
As a third limitation of the invention, the first conversion device comprises a rotating bracket and two pneumatic clutches, the two pneumatic clutches are respectively assembled on the rotating shafts of the two lifting power generation bodies, the lifting power generation bodies provided with the two pneumatic clutches are respectively two energy storage rails closest to the lowest elevation of the upper storage yard, the pneumatic clutches are positioned on the rotating shaft provided with the two relay lifting chain wheels, the two ends of the rotating bracket are respectively fixedly arranged on the two pneumatic clutches, and the bearing seat provided with the rotating shaft on the lower elevation lifting power generation body of the two lifting power generation bodies is movably arranged on the lifting power generation body; the transmission support rail is disconnected between the lifting power generation bodies, one side of the rotating support between the lifting power generation bodies is provided with the transmission support rail, and the disconnected part of the transmission support rail is filled, so that the lifted part of the transmission support rail is a straight line.
As a limitation of the invention, the second conversion device comprises an opening and closing rod hinged on the lower storage yard energy storage rail and a motor for driving the opening and closing rod to rotate around a hinge point, and one end of the opening and closing rod, which is not connected with the energy storage rail, is in contact with the transmission support rail.
As a fourth limitation of the present invention, the energy storage rail includes two rails, round tubes or steel wire ropes which are arranged at intervals and used for supporting two sides of the energy storage body.
By adopting the technical scheme, compared with the prior art, the invention has the following beneficial effects:
(1) The energy storage rail is obliquely arranged, and when the energy storage bodies are stacked, the energy storage bodies can sequentially slide to corresponding positions along the energy storage rail under the action of gravity and inertia force, so that other power devices are not needed for transportation, the electricity consumption cost is greatly saved, and the operation cost is reduced; the multi-layer structure with the continuous bending energy storage rail can store more energy storage bodies on the limited ground, so that the storage space is saved, and the limitation of storing the energy storage bodies due to insufficient ground area is broken; the track conversion power generation device is arranged between the two energy storage tracks, potential energy difference generated by inclined arrangement is converted into electric energy through the track conversion power generation device, and when the energy storage bodies are stacked, power can be generated as well, so that the generated energy is improved; the combination of the three modes of unpowered driving of the energy storage bodies to move, increasing of the number of the stored energy storage bodies and power generation during rail conversion greatly improves the power generation efficiency and can obtain larger economic benefits; the energy release path of the whole system is far larger than the lifting path, and potential energy is converted into electric energy to the greatest extent, so that the power generation efficiency is far higher than that of the structure with the same lifting and energy release paths;
(2) The energy storage rail has smaller gradient, and can effectively control the movement speed of the energy storage body by combining with the use of the damper, so that the rail conversion power generation device can be protected, and the energy storage body can be stored on the energy storage rail in sequence;
(3) According to the invention, the two sides on the energy storage body are supported together through the first blocking plate and the second blocking plate, so that the supporting strength is increased, the second fixing plate is arranged on the two adjacent outer chain plates, the force generated by the energy storage body is dispersed on the two adjacent outer chain plates, the pulling of one chain plate is reduced, the outward inclination degree of the hanging parts of the first blocking plate and the second blocking plate is reduced, and the energy storage body can be effectively prevented from falling from the hook; meanwhile, the first blocking plate and the second blocking plate are matched to form double protection, so that the safety is higher; when the body is lifted to relay the energy storage body, the first blocking plate plays a role in pulling, and the second blocking plate plays a role in pushing, so that the energy storage body is effectively prevented from falling off in the handover process;
(4) The hook components are arranged at the corresponding positions of the inner side and the outer side of the chain, so that the overall strength can be improved, and the service life is longer;
(5) The energy storage rail is a steel rail, a round pipe or a steel wire rope, and the two ends of the energy storage rail are supported by the scaffold, so that the construction cost is greatly saved.
In summary, the invention can increase the storage of the energy storage body to the greatest extent in a limited space, has no power input and generates power when the energy storage body is stored, reduces the electricity cost, increases the energy release path, greatly improves the power generation efficiency, and is suitable for gravity energy storage power generation.
Drawings
The invention will be described in more detail below with reference to the accompanying drawings and specific examples.
FIG. 1 is a schematic diagram of a front view of a lifting power generation device connected to an upper yard and a lower yard according to embodiment 1 of the present invention;
FIG. 2 is a schematic diagram of a front view structure of a yard according to embodiment 1 of the present invention;
FIG. 3 is an enlarged schematic view of the portion C of FIG. 2;
FIG. 4 is a schematic top view of the energy storage rail and sprocket assembly of the rail conversion power generation apparatus according to embodiment 1 of the present invention;
FIG. 5 is a schematic structural diagram of the energy storage body and the damper according to embodiment 1 of the present invention;
FIG. 6 is a schematic diagram showing a front view of a lifting power generation device according to embodiment 1 of the present invention;
fig. 7 is a schematic top view illustrating a positional relationship between a transmission support rail and a lifting chain according to embodiment 1 of the present invention;
FIG. 8 is a schematic diagram showing a front view of a lifting chain according to embodiment 1 of the present invention;
FIG. 9 is an enlarged schematic view of the portion D of FIG. 8;
fig. 10 is a schematic front view of a first hook according to embodiment 1 of the present invention;
FIG. 11 is a schematic front view of a second hook according to embodiment 1 of the present invention;
FIG. 12 is an enlarged schematic view of the portion A of FIG. 1;
fig. 13 is a schematic view of a simple structure of a rotating bracket according to embodiment 1 of the present invention after rotating around an axis;
fig. 14 is a schematic diagram of a method structure of the portion B of fig. 1.
In the figure: 1. an energy storage rail; 2. a track conversion power generation device; 21. a frame; 22. a sprocket; 23. a chain; 231. an L-shaped outer link plate; 24. a generator; 3. a damper; 4. an energy storage body; 41. a support rod; 5. lifting the chain; 51. an outer link plate; 6. a first hook; 61. a first fixing plate; 62. a first blocking plate; 7. a second hook; 71. a second fixing plate; 72. a second blocking plate; 8. a bracket; 9. lifting a chain wheel; 10. a sprocket assembly; 11. a transmission support rail; 12. rotating the bracket; 13. a clutch; 14. a motor; 15. an opening and closing rod; 16. a relay lifting chain wheel; 17. the chain is lifted by relay.
Detailed Description
Preferred embodiments of the present invention will be described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are presented for purposes of illustration and understanding only, and are not intended to limit the invention.
Embodiment is a high-efficient gravity energy storage power generation system
As shown in fig. 1, the present embodiment includes an energy storage body 4, two storage yards, a transmission support rail 11, a lift power generation device, and a control device. The energy storage body 4 serves to store and release energy. The two storage yards have the same structure, one is located at the high altitude position and is located at the upper storage yard, the other is located at the low altitude position and is located at the lower storage yard, the upper storage yard is used for receiving and storing the energy storage body 4 which generates high potential energy, the lower storage yard is used for receiving and storing the energy storage body 4 which releases potential energy, and the construction scale and the engineering quantity of the energy storage device can be reduced by utilizing mountain bodies with height differences, mines, pits or mines after exploitation and the like. The lifting power generation devices are provided with a plurality of structures which adopt a mutually staggered relay type and are used for lifting the energy storage body 4 from the lower storage yard to the upper storage yard to store potential energy, and then the potential energy automatically falls down through the gravity of the energy storage body 4 to drive the power generator to generate power. The embodiment can use solar energy, wind energy or electric energy underestimating electricity consumption period to lift the energy storage body 4 to an upper storage yard at a high position for storage, release the energy storage body 4 to generate electricity when electricity is needed, and then have a lower storage yard at a low position.
1. Energy storage body 4
The energy storage body 4 is the cubic structure of high proportion, and in order to be convenient for carry, the both sides of energy storage body 4 direction of height all are provided with bracing piece 41, when promoting or releasing energy storage body 4, accept the bracing piece 41 of energy storage body 4 both sides can, all rotate on two bracing pieces 41 and be connected with the pulley for with the track matching.
2. Upper and lower yards
As shown in fig. 2 and 3, the upper storage yard and the lower storage yard each include a plurality of energy storage rails 1 and a plurality of rail conversion power generation devices 2, the energy storage rails 1 are used for carrying energy storage bodies 4, and the rail conversion power generation devices 2 are used for transferring the energy storage bodies 4 from one energy storage rail 1 to the other energy storage rail 1 and converting potential energy generated in the process into electric energy.
The energy storage track 1 comprises two round pipes which are arranged at intervals, a scaffold or a fixed upright post is erected on the ground and used for supporting the round pipes, the two round pipes are used for supporting two sides of the energy storage body 4, the supporting rods 41 on two sides of the energy storage body 4 are respectively arranged on the two round pipes, and the pulleys on the supporting rods 41 are in sliding connection with the two round pipes, so that the energy storage body 4 is located between the two round pipes, the energy storage body 4 can be supported, and the energy storage body 4 can slide on the two round pipes conveniently. Every energy storage track 1 all sets up along the direction of motion downward sloping of energy storage body 4, and when energy storage body 4 was located energy storage track 1, because energy storage track 1 slope set up, the pulley on energy storage body 4 bracing piece 41 and energy storage track 1 sliding contact, under the effect of gravity component force, energy storage body 4 need not drive arrangement, can follow energy storage track 1 downward movement, makes energy storage body 4 can stack in certain position voluntarily, realizes unpowered stack.
In order to increase the number of stored energy storage bodies 4 and reduce the occupied area, the energy storage rails 1 are obliquely arranged, the oblique directions of two adjacent energy storage rails 1 are opposite, and after the two adjacent energy storage rails are connected end to end, a continuous bending structure along the vertical direction is formed, so that the energy storage bodies 4 can continuously move from a high position to a low position. The inclination of each energy storage track 1 with the horizontal ground is 1 °, 2 °, 3 °, 4 ° or 5 °, the inclination angle of this embodiment being 3 °. The energy storage rail 1 with the 'structure' not only can form a plurality of layers to store more energy storage bodies 4, but also can enable the energy storage bodies 4 to generate potential energy difference. In order to further utilize this potential energy difference and to smoothly transition the energy storage body 4 from one energy storage rail 1 to the other energy storage rail 1, a rail switching power generation device 2 is provided at the end-to-end connection between the two energy storage rails 1, and the energy storage body 4 is moved in a switching direction by the rail switching power generation device 2, as will be described in detail below.
The track conversion power generation device 2 comprises a frame 21, a sprocket chain assembly and a power generation assembly for energy conversion, wherein the power generation assembly comprises a generator 24 and a driving sprocket fixed on an input shaft of the generator 24. The sprocket chain assembly is rotatably connected to the frame 21, and the power input end of the generator 24 is fixedly connected to the sprocket chain assembly, i.e. the movement of the sprocket chain assembly drives the generator 24 to generate electricity. The chain 23 of the sprocket chain assembly is structurally modified in this embodiment so that the energy storage body 4 can be transferred from the high-level energy storage rail 1 to the low-level energy storage rail 1 through the L-shaped outer link plate 231.
The sprocket chain assembly comprises four sprockets 22 and two chains 23, two of the four sprockets 22 are arranged up and down in a group, the chains 23 are arranged on each group, the chains 23 on the two groups of sprockets 22 synchronously move in the same direction, and the two chains 23 move along the descending direction of the energy storage body 4. The two sets of sprockets 22 are spaced apart and the two lower sprockets 22 are mounted on a shaft to which is secured a third sprocket, which is connected to the drive sprocket on the input shaft of the generator 24 by a conventional chain which transmits the force on the sprocket chain assembly to the generator 24. The outer link plates of the chain 23 in the chain wheel and chain assembly are L-shaped, namely the chain 23 in the chain wheel and chain assembly is basically the same as the common connection, except that the original outer link plates are replaced by the outer link plates 231 of the L-shape at intervals, one end of the outer link plates 231 of the L-shape, which is not hinged with the chain 23, is tilted and tilted towards the direction of the chain 23, and the outer link plates 231 of the L-shape are transited at right angles through circular arcs.
In order to ensure that the energy storage body 4 on the energy storage rail 1 can slide onto the L-shaped outer link plate 231 of the chain 23, the L-shaped outer link plate 231 intersects with the projection of the energy storage rail 1 in the front view projection direction of fig. 2, and as shown in fig. 4, two round tubes are located inside the two chains 23 of the sprocket-chain assembly in the top view projection direction. When the energy storage body 4 moves to the tail end of the energy storage track 1, the two L-shaped outer chain plates 231 just move to the tail end of the energy storage track 1, the energy storage body 4 continuously slides downwards under the action of gravity, the supporting rods 41 at the two sides of the energy storage body 4 fall on the two L-shaped outer chain plates 231, and as the two L-shaped outer chain plates 231 move downwards, when the energy storage body 4 moves to the next energy storage track 1, as the two round tubes of the lower energy storage track 1 are intersected with the L-shaped outer chain plates 231, the moving way of the supporting rods 41 at the two sides of the energy storage body 4 is blocked, the energy storage body 4 is converted to the other lower energy storage track 1, the inclined energy storage track 1 continuously moves downwards, and the L-shaped outer chain plates 231 continuously move along with the chain wheels 22, so that the energy storage body 4 is transited to the lower energy storage track 1 from the higher energy storage track 1.
As shown in fig. 2 and 5, a plurality of dampers 3 are arranged on the energy storage rail 1 at intervals, and the dampers 3 are used for limiting the movement speed of the energy storage body 4, so that when the energy storage body 4 moves to the end part of the energy storage rail 1, the L-shaped outer chain plate 231 just moves to the end part of the energy storage rail 1. The damper 3 comprises a damping fin fixedly arranged on the energy storage track 1, and the damping fin is arranged in an upward inclined manner along the movement direction of the energy storage body 4 and used for preventing the energy storage body 4 from moving downwards, the damping fin is made of spring steel, and the spring steel has certain elasticity and can generate elastic potential energy. In this embodiment, the energy storage bodies 4 on the energy storage track 1 are divided into ten groups by the dampers 3 arranged at intervals, under the static state of the energy storage bodies 4, the component force of the gravity of the ten energy storage bodies 4 is equal to the elastic potential energy of the dampers 3, the damper 3 keeps the energy storage bodies from continuously moving downwards, when the energy storage bodies 4 move downwards at the back, the back energy storage bodies 4 give acceleration to the groups of energy storage bodies 4, one energy storage body 4 in each group, which is in contact with the dampers 3, overcomes the resistance of the dampers 3, starts to move downwards, and the second energy storage body 4 in each group is blocked by the dampers 3 and waits for the next energy storage body 4 to collide and then moves downwards.
3. Conveying support rail 11
A transmission support rail 11 is arranged between the upper storage yard and the lower storage yard, and the transmission support rail 11 is used for connecting the upper storage yard and the lower storage yard, so that the lifting and descending movement of the energy storage body 4 form a complete route. One end of the transmission support rail 11 is connected with one energy storage rail with the highest elevation of the upper storage yard, so that the lifted energy storage body 4 is transited to the energy storage rail of the upper storage yard, and the other end of the transmission support rail is connected with one energy storage rail with the lowest elevation of the lower storage yard, so that the descending energy storage body 4 is transited to the energy storage rail of the lower storage yard. And one of the energy storage rails having the lowest elevation of the upper yard is connected to the transfer support rail 11 through the first conversion means, and one of the energy storage rails having the highest elevation of the lower yard is connected to the transfer support rail 11 through the second conversion means. The transmission support rail 11 of this embodiment is two round tubes arranged at intervals, and the round tubes are fixed by a scaffold or an upright post.
4. Lifting power generation device
The lifting power generation device in this embodiment is in the prior art, that is, when the energy storage body 4 is lifted upwards, the motor is used to drive the lifting chain 5 to transport the energy storage body 4, and when the energy storage body 4 is released from a high position to a low position, the lifting chain 5 is pulled to drive the generator to generate power. Because the lifting power generation body is in the prior art, in this embodiment, only the components having connection relation with the embodiment are described, and other components are not described in detail.
As shown in fig. 6, two ends of the lifting power generation device are disposed at two ends of the transmission support rail 11, and are used for driving the energy storage body 4 to move from the lower storage yard to the upper storage yard along the transmission support rail 11 for storing energy, and driving the lifting power generation device to generate power when the energy storage body 4 descends. The lifting power generation device comprises two lifting power generation bodies and two lifting chains 5.
(1) Lifting power generation body
As shown in fig. 6, the lifting power generation body includes a bracket 8, two rotating shafts rotatably provided on the bracket 8, and a transmission switching gear box connected with the two rotating shafts, respectively. The support 8 is U-shaped, and two pivots rotate respectively and set up on the inner wall of support 8 top both sides, and two pivots interval sets up, and the centre forms the clearance that is used for energy storage body 4 to pass through. As shown in fig. 7, a lifting sprocket 9 is fixedly arranged on each of the two rotating shafts and is used for sleeving the lifting chain 5. That is, two lifting chain wheels 9 are arranged on each lifting power generation body at intervals, one lifting chain 5 is sleeved on the two lifting chain wheels 9 on one side of each lifting power generation body, the other lifting chain 5 is sleeved on the two lifting chain wheels 9 on the other side of each lifting power generation body, four lifting chain wheels 9 are positioned on two sides, two lifting chain wheels 9 on each side are sleeved with one lifting chain 5, and a lifting path is formed between the two lifting power generation bodies through the lifting chain 5.
The two rotating shafts of the lifting power generation bodies are respectively provided with a relay lifting chain wheel 16, the two relay lifting chain wheels 16 are respectively sleeved with a relay lifting chain 17, the two relay lifting chains 17 are located on the inner sides of the lifting chains and are staggered with the two lifting chains 5, the two relay lifting chains 17 are used for connecting two adjacent lifting power generation devices, the relay lifting chains 17 are not arranged between the two lifting power generation bodies of the lifting power generation devices, and relay staggered connection of the two lifting power generation devices is realized. Each lifting chain 5 and each relay lifting chain 17 are matched with the transmission support rails 11 on two sides, a plurality of hook assemblies used for hooking two sides of the energy storage body 4 are uniformly arranged on the lifting chains 5 at intervals, and the hook assemblies drive the energy storage body 4 to move along with the movement of the lifting chains 5.
The two rotating shafts of the embodiment are connected with a transmission switching gear box through a chain wheel assembly 10, namely a driving shaft is also rotatably arranged below a bracket 8, a driving wheel of a chain wheel assembly is fixed on the driving shaft, a driven wheel of the chain wheel assembly is fixedly connected with the rotating shaft, the driving shaft is connected with the transmission switching gear box, and the transmission gear box is respectively connected with a motor and a generator; the structure of the transmission switching gear box is the prior art, namely, three shafts are arranged on the transmission switching gear box, namely, a first shaft for outputting on the left side, a second shaft for outputting on the right side and a third shaft, the interior of the transmission switching gear box is similar to a gear box of an automobile, and the first shaft is in transmission connection with the second shaft or in transmission connection with the third shaft through shifting gears on the first shaft by shifting forks, so that the transmission switching gear box is switched to motor work or generator work.
(2) Lifting chain 5
As shown in fig. 8 and 9, the lifting chain 5 is a conventional chain, and since the lifting path is a slope, the hook assembly can hang the support rods 41 at both sides of the energy storage body 4 when lifting the energy storage body 4, and lift up along with the movement of the lifting chain 5. The hook assembly comprises a first hook 6 and a second hook 7, wherein the first hook 6 is of an L-shaped structure, and the second hook 7 is of a T-shaped structure, which are described in detail below.
As shown in fig. 10, the first hook 6 is in a sheet shape, and includes a first fixing plate 61 and a first blocking plate 62, where the first blocking plate 62 is fixedly arranged at an end of the first fixing plate 61 to form an L-shape, and the L-shape in this embodiment has a certain angle, that is, the first blocking plate 62 is inclined toward the first fixing plate 61, so that an included angle between the first fixing plate 61 and the first blocking plate 62 is 60 °. The first fixing plate 61 is fixedly arranged on one outer chain plate 51 of the lifting chain 5, two holes are formed in the first fixing plate 61 of the embodiment and are sleeved on pin shafts at two ends of the outer chain plate 51, and the end portions of the pin shafts position the first fixing plate 61 through spring pins so that the first fixing plate 61 and the outer chain plate 51 are tightly attached and fixed. The length of the first blocking plate 62 is substantially the same as that of the link plate, and the connection between the first fixing plate 61 and the first blocking plate 62 is in the shape of a circular arc, so as to be convenient for being attached to the support rod on the energy storage body 4.
As shown in fig. 11, the second hook 7 is in a sheet shape, and includes a second fixing plate 71 and a second blocking plate 72, where the second blocking plate 72 is fixedly arranged at the center of the second fixing plate 71 to form an inverted T shape, and the T shape in this embodiment has a certain angle, that is, the second blocking plate 72 is inclined toward the second fixing plate 71, so that an included angle between the second fixing plate 71 and the second blocking plate 72 is 40 °, one end of the second fixing plate 71 is fixedly arranged on the outer link plate 51 on which the first fixing plate 61 is mounted, the other end of the second fixing plate 71 is fixedly arranged on the other outer link plate 51 adjacent to the outer link plate 51, and the other outer link plate 51 is one outer link plate 51 adjacent to the first blocking plate 62, that is, the second fixing plate 71 spans the two outer link plates 51. The second fixing plate 71 of the embodiment is provided with two holes, the two holes are respectively sleeved on the pins of the two adjacent outer chain plates 51, one hole on the second fixing plate 71 is sleeved on one pin with one hole on the first fixing plate 61, and the end part of the pin is provided with a spring pin to position the second fixing plate 71, so that the second fixing plate 71 and the outer chain plates 51 are tightly fixed. The connection between the second fixing plate 71 and the second blocking plate 72 is arc-shaped, so that the second fixing plate and the second blocking plate are convenient to be attached to the supporting rod on the energy storage body 4.
Since the first fixing plate 61 and the second fixing plate 71 are both disposed on the pin shaft of the lifting chain 5, and the angle between the first blocking plate 62 and the first fixing plate 61 is 60 °, the angle between the second blocking plate 72 and the second fixing plate 71 is 40 °, and the angle between the second blocking plate 72 and the second fixing plate 71 is smaller than the angle between the first blocking plate 62 and the first fixing plate 61, the first blocking plate 62 and the second blocking plate 72 overlap each other, and the first blocking plate 62 and the second blocking plate 72 in this embodiment are not hung on one end of the energy storage body 4 to be flush.
In order to increase the strength, the outer link plates 51 at the corresponding positions on the inner side and the outer side of the lifting chain 5 are fixedly provided with hook assemblies, that is, the hook assemblies are arranged in pairs on the inner side and the outer side of the lifting chain 5 and are positioned at two ends of the pin shaft on the lifting chain 5.
5. First conversion device
As shown in fig. 7, 12 and 13, the first conversion device includes two rotating brackets 12 and four pneumatic clutches 13, and the energy storage rail 1 with the lowest elevation of the upper yard is transited to the transmission support rail 11 at one lifting power generation device, so that the rotating brackets 12 are arranged at the relay of two lifting power generation devices at the position, namely, two adjacent lifting power generation bodies on two adjacent lifting power generation devices. The two pneumatic clutches 13 are respectively assembled on the rotating shafts of the two lifting power generation bodies, the rotating shaft of one of the two lifting power generation bodies with lower elevation is of a two-section structure and is respectively supported by two bearing seats, lifting chain wheels 9 are respectively fixed on the rotating shafts on the two outer sides, relay lifting chain wheels 16 are respectively fixed on the rotating shafts on the two inner sides, the four pneumatic clutches 13 are respectively assembled on the rotating shafts on the four inner sides of the two lifting power generation bodies, two ends of the rotating support 12 are respectively fixedly arranged on the two pneumatic clutches 13 of the two lifting power generation bodies, and the other rotating support 12 is arranged on the other side. The bearing seat of the inner side rotating shaft installed on one lifting power generation body with lower elevation in the two lifting power generation bodies is movably arranged on the lifting power generation body. Because the rotating bracket 12 is a rigid connection, the two rotating shafts are connected together for keeping the relay lift chains 16 on the two relay lift sprockets 16 in a taut state.
The transmission support rail 11 is disconnected between the two lifting power generation bodies, one side of the rotating bracket 12 between the lifting power generation devices forms the transmission support rail 11, and is connected with the disconnected transmission support rail 11, so that the disconnected part of the transmission support rail 11 is filled, and the lifted part of the transmission support rail 11 is a straight line. The rotating shafts of a pair of force lifting chain wheels 16 on the inner side of the lifting power generation device are respectively provided with a first conversion device, so that the two force lifting chain wheels 16 on the lower side of the inner side are lifted at the same time, and the energy storage body 4 passes through the yielding way.
The lift power generation device here has two states: when the lifting energy storage body 4 is required to store energy in an ascending way, the lifting power generation device operates normally like other lifting power generation devices, one side of the rotating support 13 is connected with the transmission support rail 11 to form a straight line, the pneumatic clutch 13 releases the rotating shaft, so that the rotating shaft rotates normally, and the rotating support 12 does not rotate along with the rotating shaft; when the energy storage body 4 needs to be released to generate electricity in a descending way, the two pneumatic clutches 13 on the lifting power generation device are tightly held by the rotating shaft, the rotating shaft on the lifting power generation body with higher elevation rotates, the rotating support 12 is driven to rotate around the rotating shaft on the power generation body with higher elevation, the rotating support 12 drives the bearing seat and the relay lifting chain 17 on the lifting power generation body to rotate upwards, and a gap for the energy storage body 4 and the supporting rod 41 to pass through is formed between the two lifting power generation bodies. When the release of the energy storage body 4 is completed, the rotating shaft on the lifting power generation body with high altitude is reversed, so that the bearing seat is driven to fall down to restore to the original state, and preparation is made for lifting the energy storage body 4.
6. Second switching device
As shown in fig. 14, the second conversion device includes an opening and closing rod 15 and a motor 14, and one end of the opening and closing rod 15 is hinged on the energy storage rail 1 of the lower storage yard. Because the energy storage track 1 is fixed on the scaffold, the motor 14 is fixed on the scaffold, and the output shaft of the motor 14 is fixedly connected with the opening and closing rod 15 at the hinge point and used for driving the opening and closing rod 15 to rotate around the hinge point, and one end of the opening and closing rod 15 which is not connected with the energy storage track 1 is in contact with the transmission support track 11.
The second switching device has two states; when the energy storage body 4 needs to be lifted for upward energy storage, the motor 14 drives the opening and closing rod 15 to rotate upwards, and a gap for the energy storage body 4 to pass through is formed between the opening and closing rod and the transmission support rail 11; when the energy storage body 4 needs to be released to generate electricity in a descending way, the motor 14 drives the opening and closing rod 15 to reversely move to be in contact with the transmission support rail 11, so that the energy storage body 4 can be transited to the energy storage rail 1 of a lower storage yard in the descending way.
7. The use process
The supporting rods 41 on two sides of the energy storage body 4 are lapped on the transmission supporting rail 11 and the energy storage rail 1, and are connected to the transmission supporting rail 11 and the energy storage rail 1 in a sliding manner through pulleys on the supporting rods 41.
When the energy storage body 4 is lifted by the aid of the embodiment, the transmission switching gear box of the lifting power generation body is switched to a motor gear, the motor rotates to drive the lifting chain wheel 9 to rotate, the lifting chain wheel 9 drives the lifting chain 5 to move, and relay is formed between the two lifting power generation devices through the relay lifting chain 17. At this time, a force is applied to the energy storage body 4 with the highest potential energy of the lower storage yard, the energy storage body 4 impacts a group of energy storage bodies 4 adjacent to the energy storage body 4, the energy storage bodies 4 sequentially move downwards along the energy storage track 1 to generate electricity until the energy storage body 4 with the lowest potential energy on the lower storage yard moves onto the transmission support track 11, the hook component is hung on the support rods 41 at two sides of the energy storage body 4 along with the movement of the lifting chain 5, the energy storage body 4 moves upwards along the transmission support track 11, when the energy storage body 4 moves to the next lifting chain 5, the two energy storage bodies are exchanged at the highest point of the hook component moving to the lifting chain wheel 9, the energy storage body 4 is transited to the other lifting chain 5 and is continuously lifted to the upper storage yard, the hook component continues to move downwards along the lifting chain wheel 9 at the highest point of the hook component to be separated from the energy storage body 4, and the energy storage body 4 can only continue to move onto the energy storage track 1 of the upper storage yard along the transmission support track 11, the first energy storage body 4 moves along the energy storage track 1 of the upper storage yard and is blocked by the nearest damper 3, when the eleventh energy storage body 4 moves to the group of energy storage bodies 4 after blocking ten energy storage bodies 4, the gravity component force of the eleventh energy storage body 4 is larger than the elastic potential energy of the damper 3, the foremost energy storage body 4 can move the damper 3 forwards, along with the movement of more energy storage bodies 4, the energy storage bodies 4 sequentially move to the tail end of the energy storage track 1, the energy storage bodies 4 are transited to the next energy storage track 1 through the L-shaped outer chain plate 231 on the track conversion power generation device 2, the L-shaped outer chain plate 231 is blocked by the lower energy storage track 1 during the downward transition, the L-shaped outer chain plate 231 continues to move downwards to be separated from the energy storage bodies 4, the energy storage bodies 4 drive the chain 23 to move, the chain 23 drives the chain wheel 22 to move during the downward transition, the chain wheel 22 drives the generator 24 to generate electricity, and the energy storage bodies 4 are sequentially circulated until all the energy storage bodies 4 are stored on the energy storage rail 1, and as new energy storage bodies 4 are not added at the back, the lowest energy storage rail 1 can stop the motion of the lowest energy storage rail through the damper 3, and the lifting and storage of the energy storage bodies 4 are completed.
When the power generation device is used for generating power, the transmission switching gear box for lifting the power generation body is switched to a power generator gear, the power is applied to the energy storage body 4 with the highest potential energy in the upper storage yard, the power generation device moves to generate power in a mode of moving the energy storage body 4 in the lower storage yard until the energy storage body 4 with the lowest potential energy moves to the transmission support rail 11 through the first conversion device, descends along the transmission support rail 11 and is blocked by the hook component while descending, the lifting chain 5 is driven to reversely move, the lifting chain 5 drives the power generator to generate power, when the energy storage body 4 moves to the second conversion device, the pneumatic clutch 13 is used for tightly holding the rotating shaft, the sprocket component 10 on the lifting power generation device drives the rotating shaft to rotate, the rotating bracket 11 drives the bearing seat, the relay lifting sprocket 16 and the relay lifting chain 17 to upwards rotate, a gap is reserved for the movement of the energy storage body 4, and the energy storage body 4 is enabled to be transited to the transmission support rail 11. When the energy storage body 4 moves to the second conversion device, the motor 14 drives the opening and closing rod 15 to rotate to a position contacting with the transmission support rail 11, so that the energy storage body 4 is smoothly transited to the lower storage yard, and the energy storage body 4 is stored on the lower storage yard in the same storage mode as the upper storage yard.
Embodiment 2 a high efficiency gravity energy storage power generation system
The structure of this embodiment is basically the same as that of embodiment 1, except that the structure of the energy storage rail 1 is that the energy storage rail 1 of this embodiment may be a rail or a wire rope, and both ends of the rail or wire rope are supported by means of scaffolds or columns.
It should be noted that the foregoing description is only a preferred embodiment of the present invention, and is not intended to limit the present invention, but the present invention is described in detail with reference to the foregoing embodiment, and it will be apparent to those skilled in the art that modifications may be made to the technical solutions described in the foregoing embodiments, or equivalents may be substituted for some of the technical features thereof. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. The utility model provides a high-efficient gravity energy storage power generation system which characterized in that: the system comprises an energy storage body, two storage yards, a lifting power generation device and a control device, wherein the two storage yards have the same structure, one storage yard is located at a high-altitude position and is an upper storage yard, and the other storage yard is located at a low-altitude position and is a lower storage yard;
the storage yard comprises a plurality of energy storage rails, each energy storage rail is obliquely arranged to form a structure which is continuously bent along the vertical direction, two adjacent energy storage rails are connected end to end through a rail conversion power generation device, and a plurality of dampers for limiting the movement speed and the position of an energy storage body are arranged on the energy storage rails at intervals;
the track conversion power generation device comprises a frame, a chain wheel and chain assembly and a power generation assembly, wherein the chain wheel and chain assembly is rotatably connected to the frame, the power input end of the power generation assembly is assembled and connected with the chain wheel and chain assembly, one outer chain plate with the same length at intervals in the chain wheel and chain assembly is L-shaped, and the L-shaped outer chain plate is intersected with the projection of an energy storage track, so that an energy storage body is transited from a high-position energy storage track to a low-position energy storage track through the L-shaped outer chain plate;
a transmission support rail is arranged between the upper storage yard and the lower storage yard, one end of the transmission support rail is connected with one energy storage rail with the highest elevation of the upper storage yard, the other end of the transmission support rail is connected with one energy storage rail with the lowest elevation of the lower storage yard, the one energy storage rail with the lowest elevation of the upper storage yard is connected to the transmission support rail through a first conversion device, and the one energy storage rail with the highest elevation of the lower storage yard is connected to the transmission support rail through a second conversion device;
the energy storage body is arranged on the energy storage track and the transmission support track in a sliding manner;
the lifting power generation devices are provided with a plurality of lifting power generation devices, the lifting power generation devices at two ends are corresponding to two ends of the transmission support rail and are used for driving the energy storage bodies to move from the lower storage yard to the upper storage yard along the transmission support rail to store energy, and the lifting power generation devices are driven to generate power when the energy storage bodies descend.
2. A high efficiency gravity energy storage power generation system as defined in claim 1 wherein: the inclination of the energy storage rail and the horizontal ground is 1-5 degrees.
3. A high efficiency gravity energy storage power generation system according to claim 2 wherein: the damper comprises a damping piece fixedly arranged on the energy storage rail, and the damping piece is arranged in an upward inclined mode along the movement direction of the energy storage body, and the damping piece is made of spring steel.
4. A high efficiency gravity energy storage power generation system according to any of claims 1-3 wherein: the lifting power generation device comprises two lifting power generation bodies and two lifting chains;
the lifting power generation body comprises a bracket, two rotating shafts rotatably arranged on the bracket and a transmission switching gear box connected with the two rotating shafts respectively, wherein the two rotating shafts are arranged at intervals, the two rotating shafts are connected with the transmission switching gear box through a chain wheel assembly, and the transmission switching gear box is connected with a motor and a generator respectively; a lifting chain wheel is fixedly arranged on each rotating shaft of the lifting power generation body, one lifting chain is sleeved on the two lifting chain wheels on one side of the two lifting power generation bodies, and the other lifting chain is sleeved on the two lifting chain wheels on the other side of the two lifting power generation bodies;
the two rotating shafts of the lifting power generation body are respectively provided with a relay lifting chain wheel, the two relay lifting chain wheels are sleeved with relay lifting chains, and the two relay lifting chains are positioned on the inner sides of the lifting chains to realize relay staggered connection of the two lifting power generation devices; a plurality of hook components used for hanging the two sides of the energy storage body are uniformly arranged on the lifting chain at intervals.
5. The high efficiency gravity energy storage power generation system of claim 4, wherein: the hook component comprises an L-shaped first hook and a T-shaped second hook; the first hook comprises a first fixed plate and a first blocking plate fixedly arranged on the first fixed plate, and the first fixed plate is fixedly arranged on one outer chain plate of the lifting chain; the second hook comprises a second fixed plate and a second blocking plate fixedly arranged on the second fixed plate, one end of the second fixed plate is fixedly arranged on an outer chain plate provided with the first fixed plate, and the other end of the second fixed plate is fixedly arranged on the other outer chain plate adjacent to the outer chain plate;
the first blocking plate and the second blocking plate are overlapped with each other, and an included angle between the second blocking plate and the second fixing plate is smaller than an included angle between the first blocking plate and the first fixing plate.
6. The high efficiency gravity energy storage power generation system of claim 5, wherein: the outer chain plates at the corresponding positions of the inner side and the outer side of the lifting chain are fixedly provided with hook assemblies.
7. A high efficiency gravity energy storage power generation system according to claim 5 or 6 wherein: the included angle between the first fixed plate and the first blocking plate is 60 degrees, and the included angle between the second fixed plate and the second blocking plate is 40 degrees.
8. The high efficiency gravity energy storage power generation system of claim 4, wherein: the first conversion device comprises a rotating bracket and two pneumatic clutches, the two pneumatic clutches are respectively assembled on rotating shafts of the two lifting power generation bodies, the lifting power generation bodies provided with the two pneumatic clutches are respectively two energy storage rails closest to the lowest elevation of the upper storage yard, the pneumatic clutches are positioned on the rotating shafts provided with the two relay lifting chain wheels, the two ends of the rotating bracket are respectively fixedly arranged on the two pneumatic clutches, and a bearing seat provided with the rotating shaft on the lifting power generation body with the lower elevation in the two lifting power generation bodies is movably arranged on the lifting power generation body; the transmission support rail is disconnected between the lifting power generation bodies, one side of the rotating support between the lifting power generation bodies is provided with the transmission support rail, and the disconnected part of the transmission support rail is filled, so that the lifted part of the transmission support rail is a straight line.
9. A high efficiency gravity energy storage power generation system according to claim 8 wherein: the second conversion device comprises an opening and closing rod hinged on the lower storage yard energy storage rail and a motor for driving the opening and closing rod to rotate around a hinge point, and one end of the opening and closing rod, which is not connected with the energy storage rail, is in contact with the transmission support rail.
10. A high efficiency gravity energy storage power generation system according to any of claims 1-3, 5, 6, 8, 9 wherein: the energy storage track comprises two steel rails, round pipes or steel wire ropes which are arranged at intervals and used for supporting two sides of the energy storage body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311847642.0A CN117552942A (en) | 2023-12-29 | 2023-12-29 | High-efficiency gravity energy storage power generation system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311847642.0A CN117552942A (en) | 2023-12-29 | 2023-12-29 | High-efficiency gravity energy storage power generation system |
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| Publication Number | Publication Date |
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| CN117552942A true CN117552942A (en) | 2024-02-13 |
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|---|---|---|---|
| CN202311847642.0A Pending CN117552942A (en) | 2023-12-29 | 2023-12-29 | High-efficiency gravity energy storage power generation system |
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| Country | Link |
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| CN (1) | CN117552942A (en) |
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- 2023-12-29 CN CN202311847642.0A patent/CN117552942A/en active Pending
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