Energy storage body unpowered storage yard for gravity energy storage power generation

Abstract

The utility model discloses an energy storage body unpowered storage yard for gravity energy storage power generation, which comprises a plurality of energy storage tracks, each energy storage track is obliquely arranged, and the inclination directions of two adjacent energy storage tracks are opposite to form a structure which is continuously bent along the vertical direction. Every two adjacent energy storage rails are connected end to end through a rail conversion power generation device. A plurality of dampers are arranged on the energy storage track at intervals; the track conversion power generation device comprises a rack, a chain wheel and chain assembly and a power generation assembly, outer chain plates at the same length positions of chains in the chain wheel and chain assembly are L-shaped, and the L-shaped outer chain plates intersect with the projection of the energy storage track, so that the energy storage body transits from the high-position energy storage track to the low-position energy storage track. Storage of the energy storage body can be increased to the maximum extent in a limited space, no power is input when the energy storage body is stored, electricity is generated, electricity utilization cost is reduced, electricity generation efficiency is greatly improved, and the energy storage body is suitable for storing gravity energy storage electricity generation.

Description

Technical Field

[0001] The utility model relates to an energy storage body storage yard, in particular to an energy storage body unpowered storage yard used for gravity energy storage power generation. Background Art

[0002] At present, the new direction of the development of my country's power system mainly includes an energy system based on photovoltaic power generation and an energy storage system based on physical conversion. The physical energy storage system mainly includes pumped storage, gravity energy storage and compressed air energy storage. Among them, gravity energy storage has a good promotion prospect because it can increase the power generation rate by setting the specific gravity of heavy objects. Gravity energy storage is to lift heavy objects to a certain height and store them in a yard to form high-level potential energy. When electricity is needed, the heavy objects are released to a lower position. The release process drives the generator to work and converts potential energy into electrical energy.

[0003] The storage yard of the prior art is to set up one or more storage tracks at high and low flat terrain locations. The storage tracks are spread out in a carpet-like manner as a layer, and the chain rope driven by the power source drives the energy storage body to the designated storage position. When the heavy object needs to be released, the energy storage body is driven to the position where it needs to be released by the power source. In this process, the power source needs to consume a certain amount of electrical energy to drive the energy storage body to move, which reduces the conversion rate and increases the operating cost. In addition, the energy storage bodies are arranged in sequence, occupying a large area, which increases the construction or renovation cost. Utility Model Content

[0004] In order to solve the above deficiencies in the prior art, the utility model aims to provide an energy storage body unpowered storage yard for gravity energy storage power generation, so as to improve power generation efficiency and reduce operating costs.

[0005] In order to achieve the above purpose, the technical solution adopted by the utility model is as follows:

[0006] An energy storage body unpowered storage yard for gravity energy storage power generation, comprising a plurality of energy storage tracks, each of which is inclined, and the inclination directions of two adjacent energy storage tracks are opposite, forming a structure that is continuously bent in the vertical direction, and the adjacent two energy storage tracks are connected end to end through a track conversion power generation device;

[0007] The energy storage track is provided with a plurality of dampers for limiting the movement speed and position of the energy storage body at intervals;

[0008] The track conversion power generation device includes a frame, a sprocket chain assembly rotatably connected to the frame, and a power generation assembly for energy conversion. The power input end of the power generation assembly is fixedly connected to the sprocket chain assembly. An outer chain plate at the same length position of the chain interval in the sprocket chain assembly is L-shaped. The L-shaped outer chain plate intersects with the projection of the energy storage track, so that the energy storage body transitions from the high-position energy storage track to the low-position energy storage track.

[0009] As a limitation of the present invention, the inclination of the energy storage track to the horizontal ground is 1 to 5 degrees.

[0010] As a further limitation of the present invention, one end of the L-shaped outer link plate that is not hinged to the chain is tilted and tilted toward the chain.

[0011] As another limitation of the present invention, the damper includes a damping plate fixed on the energy storage track, and the damping plate is arranged to be inclined upward along the movement direction of the energy storage body, and the material of the damping plate is spring steel.

[0012] As a limitation of the present invention, the energy storage track includes two steel rails or round tubes spaced apart to support both ends of the energy storage body.

[0013] As a limitation of the present invention, the energy storage track includes two steel wire ropes arranged at intervals to support both ends of the energy storage body.

[0014] Due to the adoption of the above technical solution, the utility model has the following beneficial effects compared with the prior art:

[0015] (1) The energy storage track of the utility model is inclined. When the energy storage bodies are stacked, the energy storage bodies can slide to the corresponding positions along the energy storage track in sequence under the action of gravity and inertia. No other power devices are required for transportation, which greatly saves electricity costs and reduces operating costs. In addition, the multi-layer structure of the energy storage track with continuous bending can store more energy storage bodies on a limited ground, saving storage space and breaking the limitation of reducing the storage of energy storage bodies due to insufficient ground area. A track conversion power generation device is set between the two energy storage tracks to convert the potential energy difference generated by the inclined setting into electric energy through the track conversion power generation device. When the energy storage bodies are stacked, electricity can also be generated, thereby increasing the amount of power generation. When stacking, the combination of the three methods of driving the energy storage bodies to move without power, increasing the number of energy storage bodies stored, and generating electricity during track conversion greatly improves the efficiency of power generation and can achieve greater economic benefits.

[0016] (2) One end of the L-shaped outer chain plate of the utility model is tilted, which can increase the stability of the energy storage body and effectively prevent the energy storage body from falling off;

[0017] (3) The energy storage track of the utility model is a steel rail or a round tube or a steel wire rope, and the two ends of the steel rail or the steel tube or the steel wire rope can be supported by a scaffold, which greatly saves the construction cost.

[0018] In summary, the utility model can maximize the storage of energy storage bodies within a limited space. When storing energy storage bodies, there is no power input and power generation is performed, which reduces electricity costs and greatly improves power generation efficiency. The utility model is suitable for storing energy storage bodies for gravity energy storage power generation. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The present invention is described in further detail below in conjunction with the accompanying drawings and specific embodiments.

[0020] Figure 1 This is a schematic diagram of the main structure of an embodiment of the utility model;

[0021] Figure 2 for Figure 1 A schematic diagram of the enlarged structure of part A;

[0022] Figure 3 It is a schematic diagram of the top view of the structure of the energy storage track and two sets of sprockets in the embodiment of the utility model;

[0023] Figure 4 It is a schematic diagram of the structure of the energy storage body and the damper in use according to an embodiment of the utility model.

[0024] In the figure: 1, energy storage track; 2, track conversion power generation device; 21, frame; 22, sprocket; 23, chain; 231, L-shaped outer chain plate; 24, generator; 3, damper; 4, energy storage body; 41, support rod. DETAILED DESCRIPTION

[0025] The preferred embodiments of the present invention are described below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and understand the present invention, and are not used to limit the present invention.

[0026] Example 1 A non-powered storage yard for energy storage for gravity energy storage power generation

[0027] like Figure 1As shown, the storage yard of this embodiment is set at high terrain and low terrain with a height difference, and is used to receive energy storage bodies that generate high potential energy and energy storage bodies after releasing potential energy. The energy storage body 4 referred to in this embodiment is a heavy object. In order to facilitate transportation, support rods 41 are provided on both sides of the height direction of the energy storage body 4. When lifting or releasing the energy storage body 4, it is sufficient to receive the support rods 41 on both sides of the energy storage body 4. In this embodiment, the energy storage body 4 can be lifted to a high-position yard for storage by using solar energy, wind energy or electric energy during an underestimated power consumption period. When electricity is needed, the energy storage body 4 is released to generate electricity, and there is a low-position yard. The storage yard of this embodiment includes a plurality of energy storage rails 1 and a plurality of rail conversion power generation devices 2. The energy storage rails 1 are used to carry the energy storage body 4. The rail conversion power generation device 2 is used to transition the energy storage body 4 from one energy storage rail 1 to another energy storage rail 1, and convert the potential energy generated in the process into electric energy.

[0028] The energy storage track 1 includes two circular tubes arranged at intervals. A scaffold or fixed column is set up on the ground to support the circular tubes. The two circular tubes are used to support the two sides of the energy storage body 4. The support rods 41 on the two sides of the energy storage body 4 are respectively placed on the two circular tubes so that the energy storage body 4 is located between the two circular tubes, which can not only support the energy storage body 4 but also facilitate the energy storage body 4 to slide on the two circular tubes. Each energy storage track 1 is tilted downward along the movement direction of the energy storage body 4. When the energy storage body 4 is located on the energy storage track 1, due to the tilted setting of the energy storage track 1, the support rods 41 of the energy storage body 4 slide in contact with the energy storage track 1. Under the action of the gravity component, the energy storage body 4 does not need a driving device and can move downward along the energy storage track 1, so that the energy storage body 4 can be automatically stacked at a certain position to achieve unpowered stacking.

[0029] In order to increase the number of energy storage bodies 4 that can be stored and reduce the floor space, the energy storage track 1 is tilted and the tilt directions of two adjacent energy storage tracks 1 are opposite. After being connected end to end, a "Z" structure that is continuously bent in the vertical direction is formed, so that the energy storage body 4 can continuously move from a high position to a low position. The inclination of each energy storage track 1 to the horizontal ground is 1°, 3°, 4° or 5°, and the inclination angle of this embodiment is 3°. The energy storage track 1 with a "Z" structure can not only form multiple layers to store more energy storage bodies 4, but also generate a potential energy difference in the energy storage body 4. In order to further utilize the potential energy difference and enable the energy storage body 4 to smoothly transition from one energy storage track 1 to another energy storage track 1, a track conversion power generation device 2 is set at the end-to-end connection between the two energy storage tracks 1, and the track conversion power generation device 2 is used to make the energy storage body 4 change direction and move, which is explained in detail below.

[0030] like Figure 1 , Figure 2As shown, the track conversion power generation device 2 includes a frame 21, a sprocket chain assembly and a power generation assembly for energy conversion, wherein the power generation assembly includes a generator 24 and a drive sprocket fixed on the 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, that is, the movement of the sprocket chain assembly drives the generator 24 to generate electricity. In this embodiment, the chain 23 of the sprocket chain assembly is structurally improved so that it can transition the energy storage body 4 from the high-position energy storage track 1 to the low-position energy storage track 1.

[0031] The sprocket chain assembly includes four sprockets 22 and two chains 23. Two of the four sprockets 22 are arranged in a group, and a chain 23 is arranged on each group. The chains 23 on the two groups of sprockets 22 move synchronously in the same direction, and both chains 23 move in the descending direction of the energy storage body 4. The two groups of sprockets 22 are arranged at intervals, and the two lower sprockets 22 are assembled on a rotating shaft, and the third sprocket is fixed on the rotating shaft. The third sprocket here is connected to the driving sprocket on the input shaft of the generator 24 through a common chain, so that the force on the sprocket chain assembly is transmitted to the generator 24. An outer link plate at the same length position of the chain 23 in the sprocket chain assembly is L-shaped, that is, the chain 23 in the sprocket chain assembly is basically the same as the ordinary connection, the difference is that an L-shaped outer link plate 231 is used to replace the original outer link plate at a certain distance, and the end of the L-shaped outer link plate 231 that is not hinged to the chain 23 is tilted and tilted toward the chain 23, and the L-shaped outer link plate 231 transitions through an arc at a right angle.

[0032] In order to ensure that the energy storage body 4 on the energy storage track 1 can slide onto the L-shaped outer link plate 231 of the chain 23, Figure 2 In the main projection direction, the L-shaped outer link plate 231 intersects with the projection of the energy storage track 1, as shown in FIG. Figure 3 As shown, in the top projection direction, the two round tubes are located on the inner side of the two chains 23 of the sprocket chain assembly. 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, and the energy storage body 4 continues to slide downward under the action of gravity, and the support rods 41 on both sides of the energy storage body 4 fall on the two L-shaped outer chain plates 231. As the two L-shaped outer chain plates 231 move downward, when the energy storage body 4 moves to the next energy storage track 1, because the two round tubes of the lower energy storage track 1 intersect with the L-shaped outer chain plates 231, blocking the way of the support rods 41 on both sides of the energy storage body 4, the energy storage body 4 is transferred to another low-position energy storage track 1, and continues to descend along the inclined energy storage track 1. The L-shaped outer chain plates 231 continue to move with the sprocket 22, so as to transition the energy storage body 4 from the high-position energy storage track 1 to the low-position energy storage track 1.

[0033] like Figure 1 , Figure 4As shown, a plurality of dampers 3 are arranged at intervals on the energy storage track 1, and the dampers 3 are used to limit the movement speed and position of the energy storage body 4, so as to ensure that when the energy storage body 4 moves to the end of the energy storage track 1, the L-shaped outer link plate 231 just moves to the end of the energy storage track 1. The damper 3 includes a damping plate fixed on the energy storage track 1, and the damping plate is arranged to be tilted upward along the movement direction of the energy storage body 4, so as to prevent the energy storage body 4 from moving downward, and the material of the damping plate is spring steel, which has a 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 groups of ten by the dampers 3 arranged at intervals. When the energy storage bodies 4 are in a stationary state, the component force of the gravity of the ten energy storage bodies 4 is equal to the elastic potential energy of the dampers 3, and they are blocked by the dampers 3 and cannot continue to move downward. When an energy storage body 4 moves downward at the back, the energy storage body 4 at the back gives the grouped energy storage bodies 4 an acceleration. An energy storage body 4 in each group that contacts the damper 3 overcomes the resistance of the damper 3 and starts to move downward. The second energy storage body 4 in each group is blocked by the damper 3 and waits for the next energy storage body 4 to collide before moving downward.

[0034] This embodiment is used in conjunction with a gravity energy storage system. When the lifting device in the gravity energy storage system lifts the energy storage body 4 to the position of the storage yard, the energy storage body 4 on the lifting device transitions to the energy storage track 1 of the storage yard. The first energy storage body 4 is blocked by the nearest damper 3 until ten energy storage bodies 4 are blocked. When the eleventh energy storage body 4 moves to the group of energy storage bodies 4, the gravity component force of the eleven energy storage bodies 4 is greater than the elastic potential energy of the damper 3. The frontmost energy storage body 4 overwhelms the damper 3 and moves forward. As more energy storage bodies 4 are The energy storage bodies 4 move to the tail end of the energy storage track 1 in turn, and transition to the next energy storage track 1 through the L-shaped outer chain plate 231 on the track conversion power generation device 2. At the same time, the energy storage body 4 drives the chain 23 to move, the chain 23 drives the sprocket 22 to move, and the sprocket 22 drives the generator 24 to generate electricity, and the cycle is repeated until all the energy storage bodies 4 are stored on the energy storage track 1. Since no new energy storage bodies 4 are added later, the lowest energy storage track 1 can be prevented from continuing to move by the damper 3.

[0035] Example 2 A non-powered storage yard for energy storage for gravity energy storage power generation

[0036] The structure of this embodiment is basically the same as that of embodiment 1, except for the structure of the energy storage track 1. The energy storage track 1 of this embodiment may also be a steel rail or a steel wire rope, and both ends of the steel rail or the steel wire rope are supported by scaffolding or columns.

[0037] It should be noted that the above is only a preferred embodiment of the utility model and is not intended to limit the utility model. Although the utility model is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions recorded in the above embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. An unpowered storage yard for energy storage bodies used for gravity energy storage power generation, characterized in that: It includes a plurality of energy storage tracks, each of which is tilted, and the tilt directions of two adjacent energy storage tracks are opposite, forming a structure that is continuously bent in the vertical direction, and the two adjacent energy storage tracks are connected end to end through a track conversion power generation device; The energy storage track is provided with a plurality of dampers for limiting the movement speed and position of the energy storage body at intervals; The track conversion power generation device includes a frame, a sprocket chain assembly rotatably connected to the frame, and a power generation assembly for energy conversion. The power input end of the power generation assembly is fixedly connected to the sprocket chain assembly. An outer chain plate at the same length position of the chain interval in the sprocket chain assembly is L-shaped. The L-shaped outer chain plate intersects with the projection of the energy storage track, so that the energy storage body transitions from the high-position energy storage track to the low-position energy storage track.

2. The energy storage body unpowered storage yard for gravity energy storage power generation according to claim 1, characterized in that: The energy storage track has an inclination of 1 to 5 degrees with respect to the horizontal ground.

3. The energy storage body unpowered storage yard for gravity energy storage power generation according to claim 2, characterized in that: The end of the L-shaped outer link plate that is not hinged to the chain is tilted and tilted toward the chain direction.

4. An unpowered storage yard for energy storage body used for gravity energy storage power generation according to any one of claims 1 to 3, characterized in that: The damper comprises a damping plate fixed on the energy storage track, and the damping plate is arranged to be inclined upward along the moving direction of the energy storage body, and the material of the damping plate is spring steel.

5. The energy storage body unpowered storage yard for gravity energy storage power generation according to claim 4, characterized in that: The energy storage track includes two steel rails or round tubes which are spaced apart and used to support the two ends of the energy storage body.

6. The energy storage body unpowered storage yard for gravity energy storage power generation according to claim 4, characterized in that: The energy storage track includes two steel wire ropes which are arranged at intervals and are used to support two ends of the energy storage body.

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