Buffer area structure for vertical shaft type gravity energy storage power station

Abstract

The utility model discloses a buffer area structure for a vertical shaft type gravity energy storage power station, a buffer area is located at the position adjacent to a shaft of a vertical shaft, a conveyor is arranged in the buffer area, slide way supporting structures are arranged on the two sides of the conveyor in the conveying direction, and slide ways are arranged on the slide way supporting structures. The length direction of the slide way is parallel to the conveying direction of the conveyor, and a plurality of guide wheels are arranged on the slide way in the length direction; the weight block is located on the conveyor, and the two sides of the weight block are matched with the guide wheels and / or the sliding ways. The lifting container is located in the shaft, and the lifting container is in butt joint with the conveyor through a cradle. According to the scheme, the stability of the weight block transportation process is improved, meanwhile, the loading and unloading speed of the weight block is increased, the system parking time is shortened, and therefore the charging and discharging efficiency of the whole energy storage system is improved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of gravity energy storage power generation, and particularly relates to a buffer area structure for a vertical shaft type gravity energy storage power station. BACKGROUND

[0002] The gravity energy storage system mainly comprises two parts of energy storage and discharge. During energy storage, heavy blocks are lifted from a low position (lower bin) to a high position (upper bin) for storage, and electric energy is finally converted into gravitational potential energy; during discharge, the heavy blocks are lowered from the high position (upper bin) to the low position (lower bin), the gravitational potential energy is first converted into kinetic energy, the transmission device drives the generator to generate electricity, and the kinetic energy is finally converted into electric energy. As a commercial and engineering power project, the success of the gravity energy storage project depends on whether a continuous and stable current can be provided, which depends on the stability of the heavy block operation. As a new type of energy storage scheme, there is no case of the gravity energy storage project in operation in China, and the first gravity energy storage project in China is under construction. The vertical shaft (vertical shaft) energy storage uses the vertical shaft as the energy storage heavy block conveying channel. There is no practical engineering application case at home and abroad, but there are several patents. For example, the patents of the Institute of Electrical Engineering of the Chinese Academy of Sciences, such as "Composite Energy Storage System Based on Deep Well", "Automatic Connection and Parking System for Multiple Heavy Gravity Energy Storage", and "Gravity Energy Storage System Based on Mine Vertical Shaft, Lifting and Transportation System" declared by China Coal Energy Research Institute Co., Ltd. all use the vertical shaft as the energy storage scheme, but the above-mentioned patents do not involve the research on the buffer area of the energy storage system, and the charging efficiency and stability of the energy storage system are not good. CONTENT OF THE UTILITY MODEL

[0003] The utility model solves the technical problem that: provide a kind of buffer area structure for vertical shaft type gravity energy storage power station, solve the problem such as slow heavy block transport speed, unstable operation state of gravity energy storage system under prior art, realize guarantee heavy block high-speed stable operation in buffer area, and improve the charge-discharge efficiency of entire energy storage system.

[0004] According to the technical scheme of the utility model, the utility model provides a kind of buffer area structure for vertical shaft type gravity energy storage power station, buffer area is located with the well shaft of vertical shaft adjacent position, and includes conveyor in buffer area, is provided with slide support structure on the both sides of the conveying direction of conveyor, is provided with slide on slide support structure, and the length direction of slide is parallel with the conveying direction of conveyor, is provided with multiple guide wheels along the length direction on slide;Heavy block is located on conveyor, and the two sides of heavy block are matched with guide wheel and / or slide;Lifting container is located in well shaft, and lifting container is connected with conveyor by rocking bed.

[0005] Further, the side of the heavy block is provided with a transverse steel plate, the circumferential direction of the guide wheel has an annular groove, and the steel plate is matched with the annular groove of the guide wheel.

[0006] Further, the guide wheels are rotatably connected to the wheel seats, and the wheel seats are connected to the slides through springs.

[0007] Further, the slides and the guide wheels are also correspondingly arranged in the lifting container.

[0008] Further, the slide support structure is a plurality of steel structure columns arranged at intervals.

[0009] Further, the storage positions for temporarily placing the heavy blocks are formed on the conveyors.

[0010] Further, two parallel conveyors are arranged in one buffer area.

[0011] Further, two lifting containers are arranged in the longitudinal half area of the shaft, and correspond to the two parallel conveyors respectively.

[0012] Compared with the prior art, the beneficial technical effects of the buffer area structure for the vertical shaft type gravity energy storage power station are as follows:

[0013] The buffer area structure for the vertical shaft type gravity energy storage power station of the utility model, from the perspective of gravity energy storage engineering application, the buffer area mode designed compared with the conventional form improves the stability of the heavy block transportation process, and is also beneficial to improve the loading and unloading speed of the heavy block, reduces the system downtime, thereby improving the charging and discharging efficiency of the whole energy storage system. According to the engineering needs, the single weight, quantity and shape of the heavy block can be adjusted, the operation parameter capacity of each equipment can be adjusted, the most suitable buffer area design parameter can be adjusted, and the arrangement scheme required by the engineering can be configured. The purpose of the buffer area of the gravity energy storage is to load and unload the heavy block and temporarily store the heavy block, and the energy consumption in the loading and unloading process is required to be low, and the total loading and unloading time is required to be short. Compared with the prior art (patent), the scheme is the most suitable buffer area design scheme for the gravity energy storage system. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 is a structural schematic view according to an embodiment of the utility model.

[0015] Explanation of reference signs in the drawings:

[0016] 1, conveyor; 2, slide support structure; 3, slide; 4, guide wheel; 5, rocker table; 6, lifting container; 7, shaft. DETAILED DESCRIPTION

[0017] The utility model provides a kind of buffer area structure for vertical shaft type gravity energy storage power station, mainly for a kind of buffer area design with auxiliary loading and unloading equipment.The gravity energy storage is through the lifting and falling of heavy mass, realizes the cyclic transformation of electric energy, kinetic energy, potential energy, to realize the storage and release of electric energy.The present application mainly aims at solving the problems of slow heavy mass transport speed, unstable running state and the like in the prior art, to realize the stable running of heavy mass in buffer area at high speed, and improve the charge-discharge efficiency of the entire energy storage system.

[0018] Please refer to Figure 1 The utility model an embodiment of a kind of buffer area structure for vertical shaft type gravity energy storage power station, buffer area is located with the position adjacent to the shaft 7 of vertical shaft, more specifically, the upper end of the shaft 7 of vertical shaft is connected with upper bin, lower end is connected with lower bin, buffer area is located between the internal space of shaft 7 and upper and lower bin.

[0019] Buffer area includes conveyor 1, conveyor 1 is installed on ground for example, and heavy mass is driven to run by steel roller.In the conveying direction of conveyor 1, both sides are provided with slide support structure 2, and slide 3 is provided on slide support structure 2.Slide support structure 2 is for example a plurality of steel structure columns arranged at intervals, and this kind of mode is especially suitable for lower bin, and simultaneously plays the role of structure support and fixed slide 3.The length direction of slide 3 is parallel to the conveying direction of conveyor 1, and a plurality of guide wheels 4 are arranged on slide 3 along the length direction.Heavy mass is located on conveyor 1, and the both sides of heavy mass are matched with guide wheel 4 and / or slide 3, so as to assist the both sides of heavy mass to be positioned, to prevent heavy mass from swinging left and right in the process of transportation, and to improve transportation stability.Lifting container 6 is located in shaft 7, and lifting container 6 can move up and down between the height positions corresponding to upper bin and lower bin.Lifting container 6 is connected with conveyor 1 through rocking bed 5, so that heavy mass can smoothly enter and exit lifting container 6.

[0020] More specifically, in some embodiments, transverse steel plate is provided on the side of heavy mass, guide wheel 4 is groove type wheel, and guide wheel 4 has annular groove in the circumferential direction, the annular grooves of a plurality of guide wheels 4 are flush, and the transverse steel plate is matched with the annular grooves of a plurality of guide wheels 4 simultaneously, so as to realize stable guiding effect.Each guide wheel 4 can be selected to have multiple parallel annular grooves, and correspondingly, the steel plate on the side of heavy mass is multiple parallel plates.Furthermore, the steel plate on the side of heavy mass has chamfer at both ends, which is more convenient for heavy mass to move in and out of the area of guide wheel 4.

[0021] Preferably, the guide wheel 4 is rotationally connected to the wheel seat, and the wheel seat is connected to the slide 3 through a spring. The spring provides a certain buffer space for the position of the guide wheel 4, so as to also adapt and buffer the position of the weight block, and also helps the guide wheel 4 to tightly clamp the weight block on both sides to achieve better anti-swing effect.

[0022] Preferably, the slide 3 and the guide wheel 4 are also correspondingly arranged in the inside of the lifting container 6. The height of the slide 3 and the guide wheel 4 in the lifting container 6 corresponds to the buffer area, and the guide wheel 4 is also preferably connected by a spring. Thus, the entering and exiting of the weight block into the lifting container 6 can be more rapid and stable, and the weight block can be prevented from shaking in the lifting container 6.

[0023] The buffer area has a storage position, that is, a region for temporarily storing the weight block. Preferably, for example, the conveyor 1 is provided with a storage position for temporarily placing the weight block. For example, the conveyor 1 is provided in a row, and each storage position corresponds to one conveyor. A row of conveyors can continuously transport the weight block to the shaft 7, and can also temporarily stop the weight block on a storage position. Since the conveyors 1 are segmented and relatively independent, when a rear conveyor is used as a storage position to store the weight block, the front conveyor can still move the weight block and perform other work. In some optional embodiments, the storage position is independent of the conveyor 1, for example, located beside the conveyor 1. The conveyor 1 can transport the weight block to the storage position for temporary storage, and can also transport the temporarily stored weight block to the conveyor 1 or directly to the shaft 7 through the action of the storage position and / or the conveyor 1. In summary, the conveyor 1 can be used for transporting and temporarily storing the weight block, and forms a buffer effect between the lifting system and the storage system, providing flexible space for system operation. One or more weight blocks can be temporarily stopped and wait for the corresponding components to run into position, thereby effectively improving the transportation efficiency, stability and safety of the energy storage system.

[0024] In a more preferred embodiment, two rows of conveyors 1 are provided in one buffer area, and the two rows of conveyors 1 can work simultaneously and independently to further improve the transportation efficiency and flexibility. More specifically, as shown in the embodiment of Figure 1 The shaft 7 is generally cylindrical, and two lifting containers 6 are provided side by side in the longitudinal half region (half-circular region) of the shaft 7, and correspond to the two rows of conveyors 1. The space utilization is higher, and the other half region of the shaft 7 can also be provided with two lifting containers 6, and the buffer area and the rest of the upper and lower storages are arranged in a symmetrical manner, thereby improving the storage capacity of the upper and lower storages, and two or more groups of gravity energy storage systems can be provided in one shaft 7. The two rows of conveyors 1 can share one slide support structure 2. In some optional embodiments, the ends of the two rows of conveyors 1 intersect to dock the same lifting container 6.

[0025] The rocking platform 5 can adopt the prior art scheme, for example, the rocking platform 5 is arranged on the ground of the buffer area, when the lifting container reaches the buffer area at the well mouth or the well bottom, the rocking platform is controlled to fall in a turnover mode, changes from a vertical state or a state with a certain inclination angle to be connected with the lifting container, or is connected with the lifting container through an extension mode, thus forming a connection platform for the heavy blocks to enter or exit the lifting container; when the lifting container is fully loaded and is about to perform the lifting movement, the rocking platform is disconnected with the lifting container in a turnover mode or a retraction mode, and then the lifting container can start the lifting movement.

[0026] The operation scheme of the preferred embodiment of the utility model is as follows: 1, when the system stores energy, the heavy blocks lifted in the shaft are temporarily unloaded in the storage position through the rocking platform, the conveyor of the storage position transports the heavy blocks to the transport vehicle parked at the main roadway, the guide wheel and the slide prevent the heavy blocks from swinging left and right during transportation, and the transportation stability is improved; 2, when the system discharges, the transport vehicle parked at the main roadway sends the heavy blocks to the conveyor, the conveyor transports the heavy blocks to the lifting container through the rocking platform, the guide wheel and the slide prevent the heavy blocks from swinging left and right during transportation, and the transportation stability is improved.

[0027] In summary, the scheme improves the stability of the heavy block transportation process compared with the conventional form from the perspective of gravity energy storage engineering application, and is beneficial to improve the loading and unloading speed of the heavy blocks, reduce the system downtime, and improve the charging and discharging efficiency of the whole energy storage system. According to the engineering needs, the operation parameters of each device can be adjusted according to the single weight, quantity and shape of the heavy blocks, the most suitable buffer area design parameters are adjusted, and the layout scheme required by the engineering is configured. The purpose of the buffer area of the gravity energy storage is to load and unload the heavy blocks and temporarily store the heavy blocks, and the energy consumption during loading and unloading is low and the total loading and unloading time is short. Compared with the existing technical scheme (patent), the scheme is the most suitable buffer area design scheme for the gravity energy storage system.

Claims

1. A buffer zone structure for a vertical shaft gravity energy storage power station, characterized in that, The buffer area is located adjacent to the shaft (7) of the vertical shaft. The buffer area includes a conveyor (1). Slide support structures (2) are provided on both sides of the conveyor (1) in the conveying direction. Slides (3) are provided on the slide support structures (2). The length direction of the slides (3) is parallel to the conveying direction of the conveyor (1). Multiple guide wheels (4) are arranged along the length direction on the slides (3). The heavy block is located on the conveyor (1). The two sides of the heavy block are matched with the guide wheels (4) and / or the slides (3). The lifting container (6) is located inside the shaft (7). The lifting container (6) is connected to the conveyor (1) through a rocking table (5).

2. The buffer zone structure for a vertical shaft gravity energy storage power station according to claim 1, characterized in that, A transverse steel plate is provided on the side of the weight block, and the guide wheel (4) has an annular groove in the circumferential direction. The steel plate and the annular groove of the guide wheel (4) are in matching contact.

3. The buffer zone structure for a vertical shaft gravity energy storage power station according to claim 1, characterized in that, The guide wheel (4) is rotatably connected to the wheel seat, and the wheel seat is connected to the slide (3) by a spring.

4. The buffer zone structure for a vertical shaft gravity energy storage power station according to any one of claims 1-3, characterized in that, Inside the lifting container (6), there are also corresponding slides (3) and guide wheels (4).

5. The buffer zone structure for a vertical shaft gravity energy storage power station according to any one of claims 1-3, characterized in that, The slide support structure (2) consists of multiple steel structure columns spaced apart.

6. The buffer zone structure for a vertical shaft gravity energy storage power station according to any one of claims 1-3, characterized in that, Storage positions for temporarily placing heavy blocks are formed on the conveyor (1).

7. The buffer zone structure for a vertical shaft gravity energy storage power station according to any one of claims 1-3, characterized in that, Two parallel conveyor lines (1) are set up in a buffer area.

8. The buffer zone structure for a vertical shaft gravity energy storage power station according to claim 7, characterized in that, In the longitudinal half-area of ​​the shaft (7), two lifting containers (6) are arranged side by side, corresponding to two columns of conveyors (1).

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