A gravity energy storage system for abandoned mine shafts

Abstract

The application discloses a kind of abandoned mine annular slide gravitational energy storage systems, including pit body, be provided with inclined slide along pit body side wall, inclined slide is helical and connects pit top stockyard and pit bottom stockyard, be provided with carrying device on inclined slide and move along inclined slide, carrying device is carried with energy conversion equipment, energy conversion equipment is connected with electric energy transmission equipment, top stockyard and / or pit bottom stockyard are placed with gravity block.The application uses abandoned mine to manufacture gravitational energy storage field, waste site recycling, can create economic value and give priority to management environment, utilize the natural height difference of mine, manufacture bottom stockyard and top stockyard, form the potential energy difference of gravity block, compared with the height difference of artificial piling has great cost advantage, also has the significant advantages of high conversion efficiency, high safety, long service life, no self-discharge, wide application prospect.

Description

TECHNICAL FIELD

[0001] The present application relates to a kind of abandoned mine annular slide gravity energy storage system, belong to gravity energy storage technical field. BACKGROUND

[0002] With the continuous promotion of new power system, renewable energy with volatility and intermittency in power supply structure ratio is constantly improved. The influence of large-scale new energy access, throughout the power system from production, transmission to consumption, bring challenges to the safe and stable operation of power system, need to use energy storage technology to realize source network load storage coordinated operation. At present, the requirements of energy storage system include: low cost, large capacity, high efficiency, fast power response speed, inherent safety, and can provide rotational inertia and reactive power support for the safe and stable operation of new power system.

[0003] Gravity block energy storage system has the advantages of high conversion efficiency, high safety, long service life and no self-discharge, and has outstanding research and development value and broad application prospect. The existing gravity block energy storage system often needs to build a gravity energy storage tower for energy storage, which occupies a large area and has high construction cost. Therefore, we use abandoned mine to invent a kind of abandoned mine annular slide gravity energy storage system. SUMMARY

[0004] The purpose of the present application is to provide a kind of abandoned mine annular slide gravity energy storage system, the present application has the advantages of high conversion efficiency, high safety, long service life, simultaneously reasonable reuses abandoned mine, does not occupy other land area, and construction cost is low.

[0005] To solve the above technical problems, the technical scheme adopted by the present application is as follows: a kind of abandoned mine annular slide gravity energy storage system, including pit body, be provided with inclined ramp along the side wall of the pit body, the inclined ramp is spiral and is connected with pit top stockyard and pit bottom stockyard, the inclined ramp is provided with carrying device moving along the inclined ramp, the carrying device is loaded with energy conversion equipment, the energy conversion equipment can convert electric energy into kinetic energy of the carrying device running upwards, and can convert potential energy of the carrying device running downwards by its own gravity into electric energy, the energy conversion equipment is connected with electric energy transmission equipment, the top stockyard and / or pit bottom stockyard is placed with gravity block, and the electric energy transmission equipment is also connected with energy storage device and power grid.

[0006] The foregoing abandoned mine annular slide gravity energy storage system, the pit top stockyard and the pit bottom stockyard are provided with stacker-reclaimer.

[0007] The foregoing abandoned mine annular slide gravity energy storage system, the slope slide is paved with a track, the carrier device is provided with a conical wheel on both sides of the bottom, the carrier device is placed on the track through the conical wheel, and the energy conversion equipment is dynamically connected with the conical wheel through a gear set.

[0008] The foregoing abandoned mine annular slide gravity energy storage system, the large-diameter end of the conical wheel is provided with a raised rim, and the rim is arranged on the inner side of the two tracks.

[0009] The foregoing abandoned mine annular slide gravity energy storage system, the top of the carrier device is hingedly connected with a power receiving rod, the top end of the power receiving rod is provided with a power receiving bow, the power receiving bow is carried on the electric energy transmission equipment and is in conductive communication, and the power receiving rod is electrically connected with the energy conversion equipment, so that the electric energy transmission equipment and the energy conversion equipment are electrically connected through the power receiving bow and the power receiving rod.

[0010] The foregoing abandoned mine annular slide gravity energy storage system, the electric energy transmission equipment comprises a power transmission bare wire and a support, the support is fixedly installed on the side wall of the pit body, the support is suspended with the power transmission bare wire through an insulating medium at one end above the carrier device, the power receiving bow is overlapped on the power transmission bare wire, and the power transmission bare wire is also electrically connected with the energy storage equipment and the power grid.

[0011] The foregoing abandoned mine annular slide gravity energy storage system, the carrier device comprises a control part and a loading part, the conical wheel is assembled below the main body constituted by the control part and the loading part, the energy conversion equipment is assembled in the control part, and the loading part can load gravity blocks.

[0012] The foregoing abandoned mine annular slide gravity energy storage system, the edge of the loading part is provided with a protective fence.

[0013] The foregoing abandoned mine annular slide gravity energy storage system, the top end and the bottom end of the slope slide are provided with limiting devices, and the limiting devices are provided with distance detection equipment for detecting the distance of the carrier device on the side facing the carrier device.

[0014] The foregoing abandoned mine annular slide gravity energy storage system, the limiting device comprises a limiting main body, the limiting main body is arranged at the end of the slope slide, the limiting main body is provided with a mounting groove on the side facing the carrier device, a sliding part is slidingly installed in the mounting groove, one end of the sliding part protrudes out of the mounting groove and is embedded with distance detection equipment at the end, and the other end of the sliding part is inserted into the cavity of the mounting groove and is provided with an elastic part.

[0015] Compared with the prior art, the application adopts the abandoned mine pit to manufacture the gravity energy storage field, reuses the waste site, can create economic value and give consideration to environmental governance; utilizes the natural height difference of the mine pit to manufacture the bottom stockyard and the top stockyard, forms the potential energy difference of the gravity block, has great cost advantage compared with the artificial stacking height difference; adopts the conventional building materials, is easy to purchase, is economic and applicable, has short construction period, and the cost is controllable, and simultaneously has the significant advantages of high conversion efficiency, high safety, long service life, no self-discharge, and the like, and has wide application prospect. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 is the overall elevation schematic diagram of the application;

[0017] Figure 2 is the overall plane schematic diagram of the application;

[0018] Figure 3 is the enlarged schematic diagram of A in Figure 1

[0019] Figure 4 is the structure side schematic diagram of the carrying device of the application;

[0020] Figure 5 is the structure schematic diagram of the pantograph of the application;

[0021] Figure 6 is the structure schematic diagram of the limiting device of the application.

[0022] The drawing label: 1-pit body, 2-pit top stockyard, 3-pit bottom stockyard, 4-inclined slide, 5-carrying device, 6-energy conversion equipment, 7-electric energy transmission equipment, 8-gravity block, 9-stocking and taking machine, 10-rail, 11-conical wheel, 12-power receiving rod, 13-pantograph, 14-rim, 15-power transmission bare wire, 16-bracket, 17-control part, 18-loading part, 19-guardrail, 20-limiting device, 21-distance detection equipment, 22-limiting main body, 23-mounting groove, 24-sliding part, 25-elastic part.

[0023] The application will be further described below in combination with the drawings and specific embodiments. EMBODIMENT

[0024] ​Embodiment 1 of the present application: a waste mine pit annular chute gravity energy storage system, comprising a pit body 1, the pit body 1 adopts a waste mine pit, a slope chute 4 is arranged along the side wall of the pit body 1, the slope chute 4 is spiral and connects a pit top stockyard 2 and a pit bottom stockyard 3, the natural height difference of the waste mine pit is utilized to manufacture the pit top stockyard 2 and the pit bottom stockyard 3, a gravity potential energy difference is formed, the historical left mine wall lane can be utilized, and the annular slope chute 4 is formed after transformation, a carrying device 5 moving along the slope chute 4 is arranged on the slope chute 4, an energy conversion equipment 6 is carried on the carrying device 5, the energy conversion equipment 6 can adopt a power generation motor, the energy conversion equipment 6 can convert electric energy into kinetic energy of the carrying device 5 running upwards, and simultaneously, potential energy of the carrying device 5 running downwards by gravity of the carrying device 5 itself is converted into electric energy, the energy conversion equipment 6 is connected with an electric energy transmission equipment 7, the pit top stockyard 2 and / or the pit bottom stockyard 3 is / are placed with gravity blocks 8, and the electric energy transmission equipment 7 is further electrically connected with an energy storage equipment and a power grid.

[0025] When the carrying device 5 carrying the gravity block 8 runs downwards by gravity of the carrying device 5 itself, the energy conversion equipment 6 converts potential energy of the carrying device 5 and the carried gravity block 8 into electric energy, other equipment can be powered, or the power grid can be fed, or electric energy can be stored in the electric energy storage equipment; electric energy of the power grid is converted into mechanical energy by the energy conversion equipment 6 to provide power for the carrying device 5, the carrying device 5 carrying the gravity block 8 runs upwards, electric energy is converted into potential energy of the gravity block 8, and storage is performed.

[0026] Embodiment 2 of the present application: a waste mine pit annular chute gravity energy storage system, comprising a pit body 1, the pit body 1 adopts a waste mine pit, a slope chute 4 is arranged along the side wall of the pit body 1, the slope chute 4 is spiral and connects a pit top stockyard 2 and a pit bottom stockyard 3, the natural height difference of the waste mine pit is utilized to manufacture the pit top stockyard 2 and the pit bottom stockyard 3, a gravity potential energy difference is formed, the historical left mine wall lane can be utilized, and the annular slope chute 4 is formed after transformation, a carrying device 5 moving along the slope chute 4 is arranged on the slope chute 4, an energy conversion equipment 6 is carried on the carrying device 5, the energy conversion equipment 6 can adopt a power generation motor, the energy conversion equipment 6 can convert electric energy into kinetic energy of the carrying device 5 running upwards, and simultaneously, potential energy of the carrying device 5 running downwards by gravity of the carrying device 5 itself is converted into electric energy, the energy conversion equipment 6 is connected with an electric energy transmission equipment 7, the pit top stockyard 2 and / or the pit bottom stockyard 3 is / are placed with gravity blocks 8, and the electric energy transmission equipment 7 is further electrically connected with an energy storage equipment and a power grid.

[0027] The pit top stockyard 2 and the pit bottom stockyard 3 are each provided with a stacker-reclaimer 9, the stacker-reclaimer 9 can perform loading and unloading work of the gravity block 8 through system control.

[0028] Embodiment 3 of the present application: a waste mine pit annular chute gravity energy storage system, comprising a pit body 1, the pit body 1 uses a waste mine pit, a slope chute 4 is arranged along the side wall of the pit body 1, the slope chute 4 is spiral and connects a pit top stockyard 2 and a pit bottom stockyard 3, the natural height difference of the waste mine pit is utilized, the pit top stockyard 2 and the pit bottom stockyard 3 are manufactured, the gravity potential energy difference is formed, the historical left mine wall lane can be utilized, the annular slope chute 4 is formed after transformation, a carrying device 5 moving along the slope chute 4 is arranged on the slope chute 4, an energy conversion equipment 6 is carried on the carrying device 5, the energy conversion equipment 6 can use a power generation motor, the energy conversion equipment 6 can convert electric energy into kinetic energy of the upward running of the carrying device 5, and simultaneously convert potential energy of the downward running of the carrying device 5 through self gravity into electric energy, the energy conversion equipment 6 is connected with an electric energy transmission equipment 7, the pit top stockyard 2 and / or the pit bottom stockyard 3 is / are placed with gravity blocks 8, and the electric energy transmission equipment 7 is also electrically connected with an energy storage equipment and a power grid.

[0029] The pit top stockyard 2 and the pit bottom stockyard 3 are each provided with a stacker-reclaimer 9, the stacker-reclaimer 9 can perform loading and unloading work of the gravity blocks 8 through system control.

[0030] The slope chute 4 is paved with a track 10, the track 10 is double-track, conical wheels 11 are arranged at both sides of the bottom of the carrying device 5, the carrying device 5 is placed on the track 10 through the conical wheels 11, the energy conversion equipment 6 is power-connected with the conical wheels 11 through a gear set, a raised rim 14 is arranged at one end of a large diameter of the conical wheel 11, the raised rim 14 is arranged at the inner side of the two tracks 10, so that the carrying device 5 can stably run along the track 10, and turning stability is ensured.

[0031] The carrying device 5 comprises a control part 17 and a loading part 18, the conical wheels 11 are assembled below a main body constituted by the control part 17 and the loading part 18, the energy conversion equipment 6 is assembled to the control part 17, the loading part 18 can load the gravity blocks 8, a protective fence 19 is arranged at the edge of the loading part 18, so as to prevent the gravity blocks 8 from deviating and falling.

[0032] The embodiment 4 of the present application is a gravity energy storage system of abandoned mine annular chute, comprising a pit body 1, the pit body 1 adopts an abandoned mine, a slope chute 4 is arranged along the side wall of the pit body 1, the slope chute 4 is spiral and connects a top pile yard 2 and a bottom pile yard 3, the natural height difference of the abandoned mine is utilized to manufacture the top pile yard 2 and the bottom pile yard 3, the gravity potential energy difference is formed, the historical left mine wall lane can be utilized, the annular slope chute 4 is formed after the transformation, a carrying device 5 moving along the slope chute 4 is arranged on the slope chute 4, an energy conversion equipment 6 is carried on the carrying device 5, the energy conversion equipment 6 can adopt a power generation motor, the energy conversion equipment 6 can convert the electric energy into the kinetic energy of the upward operation of the carrying device 5, and simultaneously can convert the potential energy of the downward operation of the carrying device 5 through the gravity of the carrying device 5 into the electric energy, the energy conversion equipment 6 is connected with an electric energy transmission equipment 7, the top pile yard 2 and / or the bottom pile yard 3 is / are placed with a gravity block 8, and the electric energy transmission equipment 7 is also connected with an energy storage equipment and a power grid.

[0033] The top pile yard 2 and the bottom pile yard 3 are each provided with a stacker-reclaimer 9, the stacker-reclaimer 9 can be controlled by a system to carry out the loading and unloading work of the gravity block 8.

[0034] A power receiving rod 12 is hingedly connected to the top of the carrying device 5, a power receiving bow 13 is arranged at the top end of the power receiving rod 12, the power receiving rod 12 can be controlled to fold up and down, the power receiving bow 13 is carried on the electric energy transmission equipment 7 and is in electrically conductive communication through the power receiving rod 12, the power receiving rod 12 is electrically connected with the energy conversion equipment 6, so that the electric energy transmission equipment 7 and the energy conversion equipment 6 are electrically connected through the power receiving bow 13 and the power receiving rod 12.

[0035] The electric energy transmission equipment 7 comprises a power transmission bare wire 15 and a support 16, the support 16 is fixedly installed on the side wall of the pit body 1, the support 16 is provided above one end of the carrying device 5 and suspends the power transmission bare wire 15 through an insulating medium, the power receiving bow 13 is overlapped on the power transmission bare wire 15, the power transmission bare wire 15 is also electrically connected with the energy storage equipment and the power grid, and the power transmission bare wire 15 is spirally arranged along the slope chute 4, so that the carrying device 5 can be connected with the power transmission bare wire 15 through the power receiving bow 13 in the whole operation process.

[0036] Embodiment 5 of the present application: a waste mine pit annular chute gravity energy storage system, comprising a pit body 1, the pit body 1 adopts a waste mine pit, a slope chute 4 is arranged along the side wall of the pit body 1, the slope chute 4 is in a spiral shape and is connected to a pit top stockyard 2 and a pit bottom stockyard 3, the natural height difference of the waste mine pit is utilized, the pit top stockyard 2 and the pit bottom stockyard 3 are manufactured, the gravity potential energy difference is formed, the historical mine wall lane can be utilized, the annular slope chute 4 is formed after transformation, a carrying device 5 moving along the slope chute 4 is arranged on the slope chute 4, an energy conversion equipment 6 is carried on the carrying device 5, the energy conversion equipment 6 can adopt a power generation motor, the energy conversion equipment 6 can convert electrical energy into kinetic energy for the upward operation of the carrying device 5, and simultaneously convert the potential energy of the downward operation of the carrying device 5 through its own gravity into electrical energy, the energy conversion equipment 6 is connected with an electrical energy transmission equipment 7, the pit top stockyard 2 and / or the pit bottom stockyard 3 is / are placed with gravity blocks 8, and the electrical energy transmission equipment 7 is further electrically connected with an energy storage equipment and a power grid.

[0037] The pit top stockyard 2 and the pit bottom stockyard 3 are each provided with a stacker-reclaimer 9, the stacker-reclaimer 9 can perform loading and unloading work of the gravity blocks 8 through system control.

[0038] The top end and the bottom end of the slope chute 4 are each provided with a limiting device 20, a distance detection equipment 21 detecting the distance of the carrying device 5 is arranged on the side of the limiting device 20 facing the carrying device 5, the limiting device 20 comprises a limiting main body 22, the limiting main body 22 is arranged at the end of the slope chute 4, an installation groove 23 is formed on the side of the limiting main body 22 facing the carrying device 5, the limiting main body 22 can be made of concrete, the installation groove 23 is embedded in the concrete by using a steel member, a sliding part 24 is slidably arranged in the installation groove 23, one end of the sliding part 24 extends out of the installation groove 23 and is embedded with the distance detection equipment 21 at the end, the distance detection equipment 21 can adopt a distance sensor such as an infrared distance sensor and an ultrasonic distance sensor, and the other end of the sliding part 24 is inserted into the cavity of the installation groove 23 and is provided with an elastic part 25.

[0039] When the carrying device 5 reaches the pit top stockyard 2 or the pit bottom stockyard 3 and runs to the end of the slope chute 4, the distance detection equipment 21 detects the distance of the carrying device 5 from the limiting device 20, when the distance reaches a preset distance, the brake equipment carried by the carrying device 5 brakes, the distance detection equipment 21 detects the parking of the carrying device 5, the loading and unloading work of the gravity blocks 8 is performed through the stacker-reclaimer 9, if the carrying device 5 cannot brake in time due to failure or other reasons, the limiting device 20 plays a limiting role to prevent the carrying device 5 from rushing out of the slope chute 4 and causing damage, the carrying device 5 hits the sliding part 24, and the elastic part 25 plays a buffering role, a pressure sensor can also be arranged on the end face of the end of the sliding part 24 extending out of the installation groove 23 to detect the impact and take emergency braking and power off of the carrying device 5.

[0040] Working principle of one embodiment of the present application: the present application utilizes some mining left historical mine to manufacture the pit body 1 of the gravity energy storage system, utilizes the natural height difference of the abandoned mine, manufactures the pit top stockyard 2 and the pit bottom stockyard 3, forms the gravity potential energy difference, can utilize the historical left mine wall lane, forms the annular inclined slide 4 after the transformation, the carrying device 5 runs along the track 10 on the inclined slide 4, when storing energy, the grid electric energy is transmitted to the energy conversion equipment 6 through the electric energy transmission equipment 7, the current collector 13 and the current collecting rod 12, the energy conversion equipment 6 converts the electric energy into mechanical energy, provides power for the carrying device 5, the carrying device 5 carries the gravity block 8 to go up, converts the electric energy into the potential energy of the gravity block 8, and stores; when generating electricity, the carrying device 5 carries the gravity block 8 to run downward by gravity, the energy conversion equipment 6 converts the potential energy of the carrying device 5 and the carried gravity block 8 into electric energy, the electric energy is transmitted to the power utilization equipment or is fed to the grid through the grid electric energy through the current collecting rod 12, the current collector 13 and the electric energy transmission equipment 7.

Claims

1. A gravity energy storage system for abandoned mine shafts characterized by, The utility model provides a kind of energy conversion equipment and energy transmission equipment, including pit (1), be provided with inclined slide (4) along the side wall of the pit (1), the inclined slide (4) is spiral and connects pit top stockyard (2) and pit bottom stockyard (3), the carrying device (5) moving along inclined slide (4) is arranged on the inclined slide (4), the energy conversion equipment (6) is carried on the carrying device (5), the energy conversion equipment (6) can convert electric energy into kinetic energy of carrying device (5) uplink operation, while the potential energy of carrying device (5) through its gravity downlink operation can be converted into electric energy, the energy conversion equipment (6) is connected with electric energy transmission equipment (7), the top stockyard (2) and / or pit bottom stockyard (3) are placed with gravity block (8), the electric energy transmission equipment (7) is also connected with energy storage device, power grid electricity;The track (10) is laid on the inclined slide (4), the conical wheel (11) is arranged on the both sides of the bottom of the carrying device (5), the carrying device (5) is placed on the track (10) by conical wheel (11), the energy conversion equipment (6) is dynamically connected with conical wheel (11) by gear set;The large-diameter end of the conical wheel (11) is provided with the raised rim (14), the rim (14) is arranged on the inner side of two tracks (10);The power-receiving rod (12) is hingedly connected to the top of the carrying device (5), the power-receiving bow (13) is arranged at the top of the power-receiving rod (12), and the power-receiving bow (13) is carried on the electric energy transmission equipment (7) and is in electrically conductive communication, the power-receiving rod (12) is electrically connected with the energy conversion equipment (6), so that the electric energy transmission equipment (7) and the energy conversion equipment (6) are electrically connected through the power-receiving bow (13) and the power-receiving rod (12).

2. A gravity energy storage system for a mine pit according to claim 1, wherein, The pit top stockyard (2) and the pit bottom stockyard (3) are provided with a reclaimer (9).

3. A gravity energy storage system for a mine pit according to claim 1, wherein, The electric energy transmission equipment (7) includes a power transmission bare wire (15) and a support (16), the support (16) is fixedly installed on the side wall of the pit (1), the power transmission bare wire (15) is hung by an insulating medium at one end above the carrying device (5), the power-receiving bow (13) is overlapped on the power transmission bare wire (15), and the power transmission bare wire (15) is also electrically connected with the energy storage device and the power grid.

4. A gravity energy storage system for abandoned mine shafts according to claim 1, wherein, The carrying device (5) comprises a control part (17) and a loading part (18), the conical wheel (11) is arranged below the main body formed by the control part (17) and the loading part (18), the energy conversion device (6) is arranged on the control part (17), and the loading part (18) can load the gravity block (8).

5. A gravity energy storage system for a mine pit according to claim 4, wherein, A guardrail (19) is arranged at the edge of the loading part (18).

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