Cable type gravity energy storage system based on slope

Abstract

The utility model discloses a cable type gravity energy storage system based on a slope. The cable type gravity energy storage system comprises a high-altitude automatic loading and unloading station and a low-altitude automatic loading and unloading station, the high-altitude automatic loading and unloading station is provided with a first rotating wheel, the first rotating wheel is connected with a generator motor, and the high-altitude automatic loading and unloading station is further provided with a high-altitude storage bin and a high-altitude material transfer device; the low-altitude automatic loading and unloading station is provided with a low-altitude storage bin, a low-altitude material transfer device and a second rotating wheel; the first rotating wheel and the second rotating wheel are in transmission connection with a corrugated flange conveying belt, and the corrugated flange conveying belt forms a lower belt surface and an upper belt surface above the slope; an upper cable type rail and a lower cable type rail are arranged on the slope, the upper belt face is connected with the upper cable type rail in a sliding or rolling mode, and the lower belt face is connected with the lower cable type rail in a sliding or rolling mode. According to the scheme, bulk materials can be continuously conveyed, energy storage and power generation output are stable, and impact on a power grid is avoided.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the gravity energy storage power generation technical field, concretely relates to a cable type gravity energy storage system based on slope. BACKGROUND

[0002] The gravity energy storage system is mainly composed of energy storage and discharge. When storing energy, the material is lifted from the low altitude storage bin to the high altitude storage bin, and the electric energy is finally converted into the gravitational potential energy of the material. When discharging, the material is transported from the high altitude storage bin to the low altitude storage bin, and the generator is driven by the conveying device to generate electricity. The gravitational potential energy is finally converted into electric energy. As a commercialized and engineered power engineering, the key to the success of the gravity energy storage project is whether it can provide continuous and stable current, which depends on the stability of the weight and speed of the heavy block.

[0003] Based on mountain (slope) energy storage, there is no practical engineering application case for using the height difference of the mountain slope as an energy storage heavy block conveying channel, but there are several patents. For example, the patent "Gravity energy storage system relying on track and cable car sand transportation" declared by the Institute of Electrical Engineering of Chinese Academy of Sciences; the patent "Hybrid gravity energy storage system suitable for wind-solar combined power generation system" declared by Harbin Institute of Technology; the patent "Solid gravity flow carrying energy storage equipment and energy storage system" declared by Wu Yanxi; the patent "Rail transportation gravity energy storage system" declared by Du Wei; the patent "High-efficiency gravity energy storage system based on conveying chain" declared by China Electric Power Engineering Corporation; the patent "Rail type gravity energy storage system capable of continuous charging and discharging and operation method thereof" declared by Huadian Lanke Technology Co., Ltd. The above patents have some design problems, especially in the consideration and effect of the actual construction required geographical environment and continuous power generation, stable output, etc. They do not have practical engineering application promotion value. UTILITY MODEL CONTENTS

[0004] The technical problem to be solved by the utility model is to provide a cable type gravity energy storage system based on slope, which solves the problem that the prior art cannot realize continuous, efficient and stable power generation, and can realize gravity energy storage power generation by using the existing conditions such as mountains as slopes and waste mine sand and stone as bulk materials as energy storage medium. The energy storage and power generation output are stable, and there is no impact on the power grid.

[0005] The utility model provides a kind of cable type gravity energy storage system based on slope, including the high altitude automatic loading and unloading station of being located at high altitude of slope and the low altitude automatic loading and unloading station of being located at low altitude of slope;First rotating wheel is provided in high altitude automatic loading and unloading station, and first rotating wheel is connected with power generation motor, and high altitude storage bin and high altitude material transfer device are also provided in high altitude automatic loading and unloading station;Low altitude storage bin, low altitude material transfer device and second rotating wheel are provided in low altitude automatic loading and unloading station;Corrugated flange conveyor belt is drivenly connected on first rotating wheel and second rotating wheel, and corrugated flange conveyor belt forms lower belt surface and upper belt surface above slope;Upper cable type track and lower cable type track are provided on slope, and upper belt surface is slidably or rollably connected with upper cable type track, and lower belt surface is slidably or rollably connected with lower cable type track.

[0006] Further, conveyor belt rollers are arranged on both sides of the corrugated flange conveyor belt, and the corrugated flange conveyor belt is matched with the conveyor belt rollers on the upper cable type track and the lower cable type track.

[0007] Further, the conveyor belt rollers are groove rollers; the upper cable type track includes two parallel upper bearing cables, and the conveyor belt rollers on both sides of the upper belt surface of the corrugated flange conveyor belt are located on the two upper bearing cables, respectively; the lower cable type track includes two parallel lower bearing cables, and the conveyor belt rollers on both sides of the lower belt surface of the corrugated flange conveyor belt are located on the two lower bearing cables, respectively.

[0008] Further, a plurality of support columns are arranged on the slope, the support columns are connected with the upper bearing cables and the lower bearing cables, and the upper bearing cables are located above the lower bearing cables.

[0009] Further, the high altitude ends and the low altitude ends of the upper bearing cables and the lower bearing cables are connected with the high altitude automatic loading and unloading station and the low altitude automatic loading and unloading station, respectively, and are tensioned near the high altitude automatic loading and unloading station and the low altitude automatic loading and unloading station.

[0010] Further, a conveyor belt turnover device is arranged near the high altitude automatic loading and unloading station and near the low altitude automatic loading and unloading station on both sides of the lower belt surface; on the upper belt surface, the flange of the corrugated flange conveyor belt faces upward; between the two conveyor belt turnover devices on the lower belt surface, the flange of the corrugated flange conveyor belt faces upward.

[0011] Further, a fixing frame is arranged on the slope, a protective cover plate is arranged on the upper end of the fixing frame, and the protective cover plate is located above the upper belt surface.

[0012] Further, the high-altitude storage bin is located below the high-altitude end of the upper belt surface; the input end of the high-altitude material transfer device is connected with the high-altitude storage bin, and the output end of the high-altitude material transfer device is located above the high-altitude end of the upper belt surface; the low-altitude storage bin is located below the low-altitude end of the upper belt surface; the input end of the low-altitude material transfer device is connected with the low-altitude storage bin, and the output end of the low-altitude material transfer device is located above the low-altitude end of the upper belt surface.

[0013] Further, the high-altitude storage bin is located below the high-altitude end of the upper belt surface; the input end of the high-altitude material transfer device is connected with the high-altitude storage bin, and the output end of the high-altitude material transfer device is located above the high-altitude end of the upper belt surface; the low-altitude storage bin is located below the low-altitude end of the upper belt surface; the input end of the low-altitude material transfer device is connected with the low-altitude storage bin, and the output end of the low-altitude material transfer device is located above the low-altitude end of the upper belt surface.

[0014] Further, the angle of the slope is 20°-50°.

[0015] Compared with the prior art, the cable type gravity energy storage system based on the slope has the beneficial technical effects as follows:

[0016] 1. The cable type gravity energy storage system based on the slope can be applied to electric power engineering, and can utilize abandoned mines, natural mountains and other existing conditions, tailings, waste mines, sandstone and all bulk materials as energy storage media, so that waste and waste mines can be developed and utilized again, the national double carbon target is met, and the development trend of the environment is adapted.

[0017] 2. The cable type gravity energy storage system based on the slope can realize continuous conveying of materials, stable energy storage and power generation output, and cannot form an impact on the power grid.

[0018] 3. The cable type gravity energy storage system based on the slope adopts an overhead cable gravity conveyor, so that the influence on the ground and the surrounding environment can be reduced, and the system can be operated in an environmentally friendly and green manner.

[0019] 4. In the cable type gravity energy storage system based on the slope, a plurality of bearing cable fixed pillars are arranged along the length direction of the steel cable, so that the relative positions of different steel cables are prevented from deviating under external force, and the gravity conveyor belt roller is prevented from derailing and causing an accident.

[0020] 5. The gravity conveyor of the cable type gravity energy storage system based on the slope can be provided with a protective cover plate, so that rainwater is prevented from falling into the conveyor belt during material transportation, and environmental pollution phenomena such as dust raising during system operation can be effectively reduced.

[0021] 6. The gravity conveyor of the cable type gravity energy storage system based on the slope adopts a wheeled corrugated edge conveyor belt, the conveyor belt roller rolls on the steel wire rope to realize gravity wheel operation, rolling friction can effectively reduce the friction loss in the system, the conveyor belt roller can be made of a material with low friction coefficient and wear resistance, the minimum friction loss is ensured, and the overall efficiency of the system is improved.

[0022] 7. The gravity wheel machine of the cable type gravity energy storage system based on slope adopts a wheel type corrugated edge conveyor belt, and a partition plate can be added between the corrugated edges on both sides of the conveyor belt according to needs, compared with a common conveyor, the overall gravity conveyor can greatly improve the inclination angle, which can reach 50°.

[0023] 8. The gravity wheel machine of the cable type gravity energy storage system based on slope is provided with two conveyor belt turnover devices on the lower belt surface, so that the side of the conveyor belt in contact with the material always faces upward on the lower belt surface, effectively avoiding the material adhered on the conveyor belt from spilling along the way and causing environmental pollution.

[0024] 9. The cable type gravity energy storage system based on slope can adjust the effective length and slope of the gravity conveyor according to the needs of engineering and actual environmental conditions, and at the same time, the width and running speed of the wheel type corrugated edge conveyor belt of the gravity wheel machine can be adjusted according to the characteristics of the conveyed material, so as to configure the required installed capacity of engineering; in addition, the gravity energy storage system can realize modularization according to actual engineering needs, form parallel arrangement or continuous relay of multiple sets of gravity energy storage systems, and realize larger installed capacity. BRIEF DESCRIPTION OF DRAWINGS

[0025] Figure 1 is a side view structural schematic diagram of the gravity energy storage system provided by the utility model.

[0026] Figure 2 is a top view structural schematic diagram of the gravity energy storage system provided by the utility model.

[0027] Figure 3 is a sectional view structural schematic diagram of the gravity energy storage system provided by the utility model.

[0028] Explanation of reference signs in the drawings:

[0029] 1. high-altitude automatic loading and unloading station; 11. high-altitude storage silo; 12. high-altitude material transfer device; 2. low-altitude automatic loading and unloading station; 21. low-altitude storage silo; 22. low-altitude material transfer device; 31. first rotating wheel; 32. second rotating wheel; 33. power generation motor; 34. corrugated edge conveyor belt; 341. upper belt surface; 342. lower belt surface; 343. conveyor belt roller; 344. conveyor belt turnover device; 345. edge; 346. roller shaft; 41. upper cable type track; 42. lower cable type track; 43. support column; 44. protective cover plate. DETAILED DESCRIPTION

[0030] The utility model provides a kind of cable type gravity energy storage system based on slope, that is, a kind of continuous circulation type gravity energy storage power generation system based on slope and its control method, solve the problem that prior art cannot realize continuous, efficient, stable. The gravity energy storage system designed by the utility model realizes the continuous conveying of bulk materials mainly relying on overhead cable type track and gravity conveyer, and then realizes the continuous, stable storage and release of energy, can use existing conditions such as mountain as slope, realize gravity energy storage power generation using waste mine sandstone and other bulk materials as energy storage medium, energy storage and power generation output are stable, and will not form impact on power grid.

[0031] Please refer to Figures 1 to 3 The utility model discloses a kind of cable type gravity energy storage system based on slope, slope is for example natural mountain, open pit slope body with height difference such as slope, use slope as the main channel of gravity energy storage system, based on the height difference of slope to lift and drop heavy object, realize the cyclic transformation of electric energy, kinetic energy, potential energy, and then realize the storage and release of electric energy. Including high-altitude automatic loading and unloading station 1 located at high altitude of slope and low-altitude automatic loading and unloading station 2 located at low altitude of slope, automatic loading and unloading station is the system that can realize the automatic loading and unloading of bulk material, including material transfer device, storage bin and control system etc.

[0032] First rotating wheel 31 is provided in high-altitude automatic loading and unloading station 1, first rotating wheel 31 is connected with power generation motor 33, wherein power generation motor has two functions of power generation and electric drive: when energy storage, motor bearing rotates and does work, drives first rotating wheel 31 to rotate using grid electric energy;When generating electricity, generator bearing is driven to rotate by the rotation of first rotating wheel 31, and electric energy is generated through rotor, stator and other devices. High-altitude storage bin 11 and high-altitude material transfer device 12 are also provided in high-altitude automatic loading and unloading station 1. High-altitude storage bin 11 is used to store bulk material, and high-altitude material transfer device 12 is used to transfer bulk material between high-altitude storage bin 11 and corrugated baffle edge conveyor belt 34. Similarly, low-altitude storage bin 21, low-altitude material transfer device 22 and second rotating wheel 32 are provided in low-altitude automatic loading and unloading station 2.

[0033] The first rotating wheel 31 and the second rotating wheel 32 are drivingly connected with a corrugated flange conveyor belt 34. The corrugated flange conveyor belt 34 is an annular conveyor belt. The corrugated flange conveyor belt 34 forms a lower belt surface 342 for ascending conveying on the slope and an upper belt surface 341 for descending conveying on the slope above the slope. The upper belt surface 341 is above the lower belt surface 342. The upper belt surface 341 and the lower belt surface 342 are relative to the slope. The corrugated flange conveyor belt 34 is rotatable and is wound around the two rotating wheels. In the part between the first rotating wheel 31 and the second rotating wheel 32, the part above is the upper belt surface 341 and the part below is the lower belt surface 342 during rotation.

[0034] The upper cable track 41 and the lower cable track 42 are arranged on the slope and are arranged between the high-altitude automatic loading and unloading station 1 and the low-altitude automatic loading and unloading station 2. The upper cable track 41 is above the lower cable track 42. The upper belt surface 341 is slidingly or rollingly connected with the upper cable track 41, and the lower belt surface 342 is slidingly or rollingly connected with the lower cable track 42. In this way, the stable operation of the corrugated flange conveyor belt 34 is ensured.

[0035] In the present scheme, the first rotating wheel, the second rotating wheel, the generator motor, the corrugated flange conveyor belt, etc. jointly constitute a gravity conveyor (or gravity wheel machine). The generator motor is further connected with the power grid through the current conversion device. The gravity conveyor, the low-altitude automatic loading and unloading station, the high-altitude automatic loading and unloading station, and the current conversion device are controlled in linkage through the control system, for example, a control station is arranged near the high-altitude automatic loading and unloading station.

[0036] Please refer to Figure 3 In a more specific embodiment, conveyor belt rollers 343 are arranged on both sides of the corrugated flange conveyor belt 34. The conveyor belt rollers 343 are rotatably connected with the corrugated flange conveyor belt 34 through, for example, roller shafts 346 arranged horizontally transversely at the bottom of the corrugated flange conveyor belt 34. In this way, a wheeled corrugated flange conveyor belt is formed. The corrugated flange conveyor belt 34 is matched with the upper cable track 41 and the lower cable track 42 through the conveyor belt rollers 343. In this way, a rolling friction connection mode is formed, so that the friction loss of the corrugated flange conveyor belt 34 during operation is smaller. Further, the conveyor belt rollers 343 are groove-type rollers, for example, in the shape of a U, so as to better adapt to the tracks and avoid falling out.

[0037] Preferably, the upper cable track 41 comprises two parallel upper bearing cables, and the conveyor rollers 343 on both sides of the upper belt surface 341 of the corrugated flange conveyor belt 34 are respectively located on the two upper bearing cables; the lower cable track 42 comprises two parallel lower bearing cables, and the conveyor rollers 343 on both sides of the lower belt surface 342 of the corrugated flange conveyor belt 34 are respectively located on the two lower bearing cables. The upper bearing cable and the lower bearing cable are specifically, for example, bearing steel cables (steel wires). In other words, in the present scheme, the track adopts overhead cables, and the overhead cables are provided with at least four bearing steel cables, which are arranged in two groups of upper and lower to form the upper bearing cable and the lower bearing cable, thereby forming the running track of the gravity wheel machine. The cross-sectional shape of the upper bearing cable and the lower bearing cable is, for example, generally circular, which is matched with the groove-shaped rollers. The bearing cable mode is more suitable for long-distance arrangement on the slope.

[0038] Further, a plurality of support columns 43 are distributed on the slope, the lower end of the support column 43 is fixed with the slope, the support column 43 is connected with the upper bearing cable and the lower bearing cable, and the upper bearing cable is located above the lower bearing cable. The support column 43 is more specifically, for example, a hinge type support column, and the number and distribution of the support column 43 can be determined according to the length of the slope and the like. In the present scheme, the support column is used to fix and support the bearing cable, which can further ensure the stability of the running.

[0039] More specifically, the high-altitude end and the low-altitude end of the upper bearing cable and the lower bearing cable are respectively connected with the high-altitude automatic loading and unloading station 1 and the low-altitude automatic loading and unloading station 2. In other words, the upper and lower ends of the steel cable are anchored in the high-altitude automatic loading and unloading station and the low-altitude automatic loading and unloading station, respectively, and the range of the upper cable track 41 and the lower cable track 42 completely covers or exceeds the range of the corrugated flange conveyor belt 34, thereby realizing the supporting and guiding effect on the whole conveying process. Preferably, the tensioning section is close to the high-altitude automatic loading and unloading station 1 and the low-altitude automatic loading and unloading station 2, that is, the two ends of the steel cable are fixed and tensioned. Specifically, for example Figure 1 As shown, the support column 43 is close to the high-altitude automatic loading and unloading station 1 and the low-altitude automatic loading and unloading station 2, the bearing cable (at least the upper bearing cable) between the support column and the automatic loading and unloading station is straight and tensioned, and the remaining part of the bearing cable can optionally have a certain curvature to adapt to the slope of the mountain and environmental disturbances and the like; the tensioning section can ensure that the automatic loading and unloading process is more stable, and it is convenient to further set up auxiliary accelerating / slowing devices and the like.

[0040] More preferably, a conveyor belt turnover device 344 is arranged near the high-elevation automatic loading and unloading station 1 and near the low-elevation automatic loading and unloading station 2 on the lower belt surface 342, and the conveyor belt will be turned over 180° after passing through the conveyor belt turnover device 344. On the upper belt surface 341, the baffle 345 (corrugated baffle) of the corrugated baffle conveyor belt 34 is upward, so that the upper belt surface 341 can carry more bulk materials under the action of the two side baffles 345. After passing through the first and second rotating wheels, the baffle 345 of the corrugated baffle conveyor belt 34 is still located outward, which is downward on the lower belt surface 342, and bulk materials may be left on the corrugated baffle conveyor belt 34 and then fall on the slope (mountain). The present scheme sets the conveyor belt turnover device 344, and the baffle of the corrugated baffle conveyor belt 34 is also turned upward between the two conveyor belt turnover devices 344 on the lower belt surface 342, so as to avoid the situation that bulk materials are scattered on the slope due to the return section of the conveyor belt.

[0041] As a more specific supplement, the upper belt surface 341, the high-elevation storage bin 11, and the low-elevation storage bin 21 can all accommodate bulk materials such as tailings, waste ore, sand, and the like. The corrugated baffle conveyor belt 34 is of a conventional structure, but has not been applied to the gravity energy storage system. In addition, a partition plate can be added between the baffles 345 on both sides of the corrugated baffle conveyor belt 34 to divide the corrugated baffle conveyor belt 34 into several cells in the length direction, further blocking the bulk materials. The present scheme innovatively adopts the conveying mode of the corrugated baffle conveyor belt 34, and realizes that the angle of the slope applicable to the gravity energy storage system can reach 50°, for example, the angle of the slope can be selected to be 20°-50°. The slope of the existing gravity energy storage system can generally not exceed 40°, so the present scheme widens the construction application range of the gravity energy storage system and can be applied to more abandoned mines, natural mountains, and the like.

[0042] In the preferred embodiment, a fixed frame is also fixedly arranged on the slope, and a protective cover plate 44 is arranged at the upper end of the fixed frame. The protective cover plate 44 is located above the upper belt surface 341 and covers the upper belt surface 341, or is also arranged on the upper side of the upper belt surface 341, thereby playing a role in rain and wind protection. The fixed frame and the support column 43 can be of the same structure (or located on the same structure) or different structures.

[0043] More specifically, the high-altitude storage bin 11 is located below the high-altitude end of the upper belt surface 341, the input end of the high-altitude material transfer device 12 is connected with the high-altitude storage bin 11, and the output end of the high-altitude material transfer device 12 is located above the high-altitude end of the upper belt surface 341. For example, the high-altitude storage bin 11 is a bin structure with an open upper end, so that after the material is transported to the end of the corrugated flange conveyor belt 34, the material can naturally fall into the high-altitude storage bin 11, and some material scattered after the corrugated flange conveyor belt 34 is loaded can also directly fall back into the high-altitude storage bin 11. The lower end of the high-altitude storage bin 11 is, for example, funnel-shaped, and is connected with the high-altitude material transfer device 12 at the lowermost end. The high-altitude material transfer device 12 can be, for example, one or a combination of a bucket elevator, a large-inclination belt conveyor, a belt conveyor, a screw elevator, and a feeder, which can transport the material to above the high-altitude end of the upper belt surface 341, and the output end of the high-altitude material transfer device 12 can optionally have an inclined guide plate to enable the material to fall more accurately onto the corrugated flange conveyor belt 34.

[0044] Similarly, the low-altitude storage bin 21 is located below the low-altitude end of the upper belt surface 341, the input end of the low-altitude material transfer device 22 is connected with the low-altitude storage bin 21, and the output end of the low-altitude material transfer device 22 is located above the low-altitude end of the upper belt surface 341. The structures of the low-altitude storage bin 21 and the low-altitude material transfer device 22 can be the same as or similar to those of the high-altitude storage bin 11 and the high-altitude material transfer device 12.

[0045] To further embody the characteristics and technical effects of the present application, a typical working mode is given below.

[0046] 1. During energy storage, the motor-generator is started, the wheeled corrugated flange conveyor belt of the gravity conveyor is driven by the friction of the first rotating wheel to realize a running state in which the upper belt surface moves towards the high-altitude end, the material stored in the low-altitude storage bin is continuously loaded onto the upper belt surface of the wheeled corrugated flange conveyor belt by the low-altitude material transfer device provided in the low-altitude automatic loading and unloading station, the material is transported by the gravity conveyor to the high-altitude automatic loading and unloading station, and is unloaded at the first rotating wheel of the gravity conveyor into the high-altitude storage bin, thereby converting electrical energy into gravitational potential energy of the material and storing it until the rated energy storage capacity is reached.

[0047] 2. When the energy is released, the gravity conveyor realizes the running state that the upper belt surface of the wheeled corrugated flange conveyor belt moves to the low altitude direction under the action of its own gravity (the running direction is opposite to that when the energy is stored), the material stored in the high-altitude storage bin is continuously loaded onto the upper belt surface of the wheeled corrugated flange conveyor belt through the high-altitude material transfer device arranged in the high-altitude automatic loading and unloading station, under the action of the gravity of the material and the conveyor belt, the wheeled corrugated flange conveyor belt drives the first rotating wheel to rotate through friction, and then drives the power generator motor to generate power, at the same time, the material is conveyed to the low-altitude automatic loading and unloading station along with the gravity conveyor, and is unloaded at the second rotating wheel to the low-altitude storage bin, realizing the conversion of the gravitational potential energy of the material into the electric energy, until the rated power generation capacity is completed.

[0048] In summary, the utility model fully considers the existing conditions such as waste mines and natural mountains, and all bulk materials such as tailings, waste mines and sand can be used as energy storage medium, truly realizing the secondary development and utilization of waste and waste mines, meeting the national double carbon target and adapting to the development trend of the environment; It can truly realize continuous material conveying, stable energy storage and power generation output, and will not form an impact on the power grid; The overhead cable gravity conveyor can reduce the impact on the ground and the surrounding environment, and truly realize green and environmentally-friendly operation; A plurality of bearing cable fixed pillars are arranged along the length direction of the steel cable, which can prevent the relative position of different steel cables from deviating under external force, and prevent accidents such as derailment of the conveyor belt roller of the gravity conveyor; A protective cover plate can be arranged on the top of the gravity conveyor to prevent rainwater from falling into the conveyor belt during material transportation, and can effectively reduce environmental pollution phenomena such as dust during system operation; The gravity conveyor adopts a wheeled corrugated flange conveyor belt, the conveyor belt roller rolls on the steel wire rope to realize the operation of the gravity wheel machine, the rolling friction can effectively reduce the friction loss in the system, and the conveyor belt roller can be made of low-friction and wear-resistant materials to ensure minimum friction loss and improve the overall efficiency of the system; The gravity wheel machine adopts a wheeled corrugated flange conveyor belt, and a partition plate can be arranged between the corrugated flange on both sides of the conveyor belt according to needs, compared with ordinary conveyors, the overall inclination angle of the gravity conveyor can be greatly improved, and can reach 50°; Two conveyor belt turnover devices are arranged on the lower belt surface of the gravity wheel machine, which can ensure that the side of the conveyor belt in contact with the material always faces upward on the lower belt surface, effectively avoiding the adhesion of the material on the conveyor belt from falling along the way and causing environmental pollution; The effective length and slope of the gravity conveyor can be adjusted according to the needs of the project and the actual environmental conditions, and the width and running speed of the wheeled corrugated flange conveyor belt of the gravity wheel machine can be adjusted according to the characteristics of the conveyed material, so as to configure the required installed capacity of the project; In addition, the gravity energy storage system of the utility model can be modularized according to actual engineering needs, and multiple gravity energy storage systems can be arranged side by side or in series to realize greater installed capacity.

[0049] It should be finally pointed out that: the above examples are only used to illustrate the technical solutions of the utility model, and not limit them; obviously, the described examples are part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor belong to the scope of protection of the utility model. For example, in some other embodiments, the storage bin can also adopt the form of ground stockyard, cooperate with automatic stacking and taking device, material transfer device to realize the loading of material to gravity conveyor. And the upper and lower cable type tracks can also be selected to adopt steel rails or other track forms along the ground to form ground rigid double-layer tracks to realize the continuous circulation transportation of gravity conveyor. In order to facilitate the description, only the parts related to the utility model are shown in the drawings. In the case of no conflict, the embodiments in the utility model and the features in the embodiments can be combined with each other. The modification of the technical solutions recorded in the foregoing examples, or the equivalent replacement of part of the technical features, does not make the essence of the corresponding technical solution deviate from the spirit and scope of the technical solutions of the embodiments of the utility model.

Claims

1. A cable-stayed gravity energy storage system based on a slope, characterized in that, It includes a high-altitude automatic loading and unloading station (1) located at a high altitude on a slope and a low-altitude automatic loading and unloading station (2) located at a low altitude on a slope; the high-altitude automatic loading and unloading station (1) is equipped with a first rotating wheel (31), which is connected to a generator motor (33); the high-altitude automatic loading and unloading station (1) is also equipped with a high-altitude storage silo (11) and a high-altitude material transfer device (12); the low-altitude automatic loading and unloading station (2) is equipped with a low-altitude storage silo (21) and a low-altitude material transfer device (22). 22) and the second rotating wheel (32); a corrugated sidewall conveyor belt (34) is connected to the first rotating wheel (31) and the second rotating wheel (32) for transmission. The corrugated sidewall conveyor belt (34) forms a lower belt surface (342) and an upper belt surface (341) above the slope. An upper cable track (41) and a lower cable track (42) are provided on the slope. The upper belt surface (341) is slidably or rollingly connected to the upper cable track (41), and the lower belt surface (342) is slidably or rollingly connected to the lower cable track (42).

2. The slope-based cable-stayed gravity energy storage system according to claim 1, characterized in that, Conveyor belt rollers (343) are distributed on both sides of the corrugated sidewall conveyor belt (34), and the corrugated sidewall conveyor belt (34) is matched with the conveyor belt rollers (343) on the upper cable track (41) and the lower cable track (42).

3. The slope-based cable-stayed gravity energy storage system according to claim 2, characterized in that, The conveyor belt rollers (343) are grooved rollers; the upper cable track (41) includes two parallel upper support cables, and the conveyor belt rollers (343) on both sides of the upper belt surface (341) of the corrugated sidewall conveyor belt (34) are respectively located on the two upper support cables; the lower cable track (42) includes two parallel lower support cables, and the conveyor belt rollers (343) on both sides of the lower belt surface (342) of the corrugated sidewall conveyor belt (34) are respectively located on the two lower support cables.

4. The slope-based cable-stayed gravity energy storage system according to claim 3, characterized in that, Several support columns (43) are distributed on the slope. The support columns (43) are connected to the upper and lower support cables. The upper support cable is located above the lower support cable.

5. The slope-based cable-stayed gravity energy storage system according to claim 4, characterized in that, The high-altitude end and low-altitude end of the upper and lower load-bearing cables are connected to the high-altitude automatic loading and unloading station (1) and the low-altitude automatic loading and unloading station (2) respectively, and the tensioning section is located near the high-altitude automatic loading and unloading station (1) and the low-altitude automatic loading and unloading station (2).

6. The slope-based cable-stayed gravity energy storage system according to claim 1, characterized in that, A conveyor belt turning device (344) is installed on the lower belt surface (342) near the high-altitude automatic loading and unloading station (1) and near the low-altitude automatic loading and unloading station (2); on the upper belt surface (341), the sidewalls of the corrugated sidewall conveyor belt (34) face upward; between the two conveyor belt turning devices (344) on the lower belt surface (342), the sidewalls of the corrugated sidewall conveyor belt (34) face upward.

7. The slope-based cable-stayed gravity energy storage system according to claim 1, characterized in that, A fixed frame is also installed on the slope, and a protective cover plate (44) is installed at the upper end of the fixed frame. The protective cover plate (44) is located above the upper surface (341).

8. The slope-based cable-stayed gravity energy storage system according to any one of claims 1-7, characterized in that, The high-altitude storage silo (11) is located below the high-altitude end of the upper belt surface (341); the input end of the high-altitude material transfer device (12) is connected to the high-altitude storage silo (11), and the output end of the high-altitude material transfer device (12) is located above the high-altitude end of the upper belt surface (341); the low-altitude storage silo (21) is located below the low-altitude end of the upper belt surface (341); the input end of the low-altitude material transfer device (22) is connected to the low-altitude storage silo (21), and the output end of the low-altitude material transfer device (22) is located above the low-altitude end of the upper belt surface (341).

9. The slope-based cable-stayed gravity energy storage system according to claim 8, characterized in that, The upper surface (341), the high-altitude storage silo (11), and the low-altitude storage silo (21) can all accommodate bulk materials.

10. The slope-based cable-stayed gravity energy storage system according to any one of claims 1-7, characterized in that, The slope angle is 20° to 50°.

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