Underground space arrangement system for gravity energy storage and gravity energy storage system

Abstract

The embodiment of the utility model provides an underground space arrangement system for gravity energy storage and a gravity energy storage system. The underground space arrangement system for gravity energy storage comprises a logistics vertical shaft, a service vertical shaft, a weight storage roadway and a lifting mechanism. The logistics vertical shaft is used for transporting energy storage weights; the logistics vertical shaft and the service vertical shaft are arranged in a spaced mode and extend in the vertical direction. The weight storage roadway is used for storing the energy storage weight; the weight storage roadway extends in the transverse direction, the weight storage roadway intersects with each of the logistics vertical shaft and the service vertical shaft, and the logistics vertical shaft, the weight storage roadway and the service vertical shaft are sequentially communicated to form a ventilation channel; the lifting mechanism is installed in the logistics vertical shaft so as to transport energy storage heavy objects. Therefore, the underground space arrangement system for gravity energy storage has the advantages of being not limited by height, saving ground space and being good in ventilation smoothness.

Description

Technical Field

[0001] The utility model relates to the technical field of energy storage, and in particular to an underground space arrangement system for gravity energy storage and a gravity energy storage system with the arrangement system. Background Art

[0002] Vigorously developing renewable energy and achieving clean energy transformation is an important way to achieve the dual carbon goals. Since the power generation of renewable energy such as photovoltaics and wind power is greatly affected by climate conditions, it leads to large fluctuations. However, wind and solar energy are greatly affected by natural factors. The prominent problem is the randomness and intermittency of power generation. Large-scale access to the power grid will bring many problems in power balance, power consumption, stable control, etc. Large-scale grid connection will affect the stability of the power grid and even cause power abandonment.

[0003] In the related technology, a tower structure is used for energy storage. The tower energy storage uses the three-dimensional stacking of blocks to form an energy storage tower or build an energy storage tower frame to lift the potential energy blocks to a high place to achieve energy storage. However, the tower energy storage is limited in height (the height can reach about 110m). The stacking height of the high tower using blocks is limited and it cannot store the ideal high potential energy height; the frame tower energy storage occupies a large area and has high costs, and the construction height is also relatively limited. Summary of the invention

[0004] The utility model aims to solve one of the technical problems in the related art to at least a certain extent. To this end, the embodiment of the utility model proposes an underground space arrangement system for gravity energy storage. The space arrangement system has the advantages of no height restriction, saving ground space and good ventilation smoothness.

[0005] The embodiment of the utility model also provides a gravity energy storage system.

[0006] The underground space arrangement system for gravity energy storage in the embodiment of the utility model comprises a logistics shaft, a service shaft, a weight storage tunnel and a lifting mechanism.

[0007] The logistics shaft is used to transport energy storage heavy objects. The logistics shaft and the service shaft are arranged at intervals and extend in the up and down directions; the weight storage lane is used to store energy storage heavy objects; the weight storage lane extends in the transverse direction, and the weight storage lane intersects with each of the logistics shaft and the service shaft, and the logistics shaft, the weight storage lane and the service shaft are connected in sequence to form a ventilation channel; the lifting mechanism is installed in the logistics shaft to transport energy storage heavy objects.

[0008] The underground space arrangement system for gravity energy storage in the embodiment of the utility model not only saves ground space by setting up a vertical shaft located underground while meeting the use requirements of the energy storage system, but also avoids the limitation on energy storage height (the height can reach about 110m) caused by the use of tower energy storage, reduces safety risks, and is not affected by the surface wind and rain environment.

[0009] In addition, when setting up the logistics shaft, the additional service shaft can not only provide a backup channel for transporting energy storage heavy objects in urgent need, but also place some cables and cables. At the same time, the service shaft can be connected with the logistics shaft and the storage lane to form a ventilation channel to form a wind circulation channel. The smoothness of ventilation of the underground space arrangement system is improved.

[0010] Therefore, the underground space arrangement system for gravity energy storage in the embodiment of the utility model has the advantages of not being restricted by height, saving ground space and having good ventilation smoothness.

[0011] In some embodiments, the weight storage tunnel has multiple tunnel layers, and the multiple tunnel layers are arranged at intervals along the up and down directions of the logistics shaft.

[0012] In some embodiments, each of the tunnel layers includes a main connecting tunnel and a plurality of branch tunnels for storing energy storage heavy objects, the main connecting tunnel intersects with each of the logistics shaft and the service shaft, and each of the branch tunnels is connected to the main connecting tunnel.

[0013] In some embodiments, the tunnel layer also includes a return air tunnel, a plurality of the branch tunnels are arranged at intervals along the inner and outer directions, the plurality of the branch tunnels are connected through the return air tunnel, and the logistics shaft, the main connecting tunnel, a plurality of the branch tunnels, the return air tunnel and the service shaft are connected to form a ventilation channel.

[0014] In some embodiments, the spacing between adjacent tunnel layers is 15m-50m.

[0015] In some embodiments, the underground space layout system for gravity energy storage also includes an underground pump room, each of the tunnel layers is provided with a drainage channel, the service shaft is provided with a drainage pipe, one end of the drainage pipe extends along the depth direction of the service shaft to the outside of the service shaft, the other end of the drainage pipe is connected to the underground pump room, and each of the drainage channels is connected to the underground pump room.

[0016] In some embodiments, the underground space arrangement system for gravity energy storage also includes an underground working chamber and a storage chamber. The underground working chamber is used to provide underground monitoring equipment and offices for personnel, and the storage chamber is used to provide spare parts.

[0017] In some embodiments, each of the logistics shaft and the service shaft extends vertically downward from the ground.

[0018] In some embodiments, the logistics shaft has a depth of 1000m-2000m.

[0019] In some embodiments, the underground space arrangement system for gravity energy storage is arranged in a closed underground mine, and the gravity storage tunnel is an underground tunnel with multiple middle sections and multiple levels in the underground mine.

[0020] The gravity energy storage system of the embodiment of the utility model includes energy storage weights and an underground space arrangement system for gravity energy storage according to any one of the above.

[0021] In some embodiments, the energy storage weight is one of pure concrete, mixed waste rock, tailings and slag. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a cross-sectional view of the gravity energy storage system of an embodiment of the utility model.

[0023] Figure 2 It is a cross-sectional view of the gravity energy storage system of an embodiment of the utility model.

[0024] Reference numerals:

[0025] Logistics shaft 1;

[0026] Service shaft 2; drainage pipe 21;

[0027] Heavy storage lane 3; Lane layer 31; Main connecting lane 311; Connecting lane 3111; Main lane 3112; Branch lane 312; Return air lane 313; Drain channel 314; Air gate 315;

[0028] Lifting mechanism 4;

[0029] Underground pump house 5;

[0030] An underground working chamber 6; a storage chamber 7; and an energy storage heavy object 8. DETAILED DESCRIPTION

[0031] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to be used to explain the present invention, but cannot be understood as limiting the present invention.

[0032] Reference below Figure 1-Figure 2 The invention describes an underground space arrangement system for gravity energy storage and a gravity energy storage system according to an embodiment of the invention.

[0033] The underground space arrangement system for gravity energy storage in the embodiment of the utility model comprises a logistics shaft 1, a service shaft 2, a weight storage tunnel 3 and a lifting mechanism 4.

[0034] The logistics shaft 1 is used to transport energy storage heavy objects 8 (the energy storage heavy objects 8 are lowered to the weight storage lane 3 or lifted to the surface through the logistics shaft 1); the logistics shaft 1 and the service shaft 2 are arranged separately and both extend in the up and down directions; the weight storage lane 3 is used to store the energy storage heavy objects 8; the weight storage lane 3 extends horizontally, and the weight storage lane 3 intersects with each of the logistics shaft 1 and the service shaft 2, and the logistics shaft 1, the weight storage lane 3 and the service shaft 2 are connected in sequence to form a ventilation channel; the lifting mechanism 4 is installed in the logistics shaft 1 to transport the energy storage heavy objects 8.

[0035] The underground space arrangement system for gravity energy storage in the embodiment of the utility model not only saves ground space by setting up a vertical shaft located underground while meeting the use requirements of the energy storage system, but also avoids the limitation on energy storage height (the height can reach about 110m) caused by the use of tower energy storage, reduces safety risks, and is not affected by the surface wind and rain environment.

[0036] In addition, when setting up the logistics shaft 1, the additional service shaft 2 can not only provide a backup channel for transporting energy storage heavy objects 8 in urgent need, but also place some cables and cables. At the same time, the service shaft 2 can be connected with the logistics shaft 1 and the heavy storage tunnel 3 to form a ventilation channel so as to form a wind circulation channel. The smoothness of ventilation of the underground space arrangement system is improved.

[0037] Therefore, the underground space arrangement system for gravity energy storage in the embodiment of the utility model has the advantages of not being restricted by height, saving ground space and having good ventilation smoothness.

[0038] Optionally, there may be multiple groups of lifting mechanisms 4 , and the multiple groups of lifting mechanisms 4 are all arranged in the logistics shaft 1 .

[0039] like Figure 1 and Figure 2 As shown, the weight storage tunnel 3 has multiple tunnel layers 31 , and the multiple tunnel layers 31 are arranged at intervals along the up and down direction of the logistics shaft 1 .

[0040] The underground space arrangement system for gravity energy storage in the embodiment of the utility model can realize large-area gravitational potential energy block storage by dividing the weight storage tunnel 3 into multiple tunnel layers 31 arranged at intervals along the vertical direction of the logistics shaft 1. The multi-layered logistics shaft 1 not only improves the working efficiency of the tunnel layer 31, but also maximizes the use of underground space. Moreover, different height differences are formed between different tunnel layers 31. According to different degrees of energy storage and release requirements, it is possible to choose to move the energy storage weight 8 between two tunnel layers 31 with a suitable height difference, which helps to achieve precise control of energy conversion.

[0041] like Figure 1 and Figure 2 As shown, each tunnel layer 31 includes a main connecting tunnel 311 and multiple branch tunnels 312 for storing energy storage heavy objects 8. The main connecting tunnel 311 intersects with each of the logistics shaft 1 and the service shaft 2, and each branch tunnel 312 is connected to the main connecting tunnel 311.

[0042] The underground space arrangement system for gravity energy storage of the embodiment of the utility model is to divide each tunnel layer 31 into a main connecting tunnel 311 and a plurality of branch tunnels 312 for storing energy storage heavy objects 8, and connect the logistics shaft 1 and the service shaft 2 through the main connecting tunnel 311, and each branch tunnel 312 is connected to the main connecting tunnel 311. The main connecting tunnel 311 can realize the horizontal and vertical logistics conversion of the energy storage heavy objects 8 and the logistics shaft 1, and the distribution and collection of blocks in the storage tunnel. Thus, the main connecting tunnel 311 and the branch tunnel 312 are used for transportation and storage of energy storage heavy objects 8.

[0043] like Figure 1 and Figure 2 As shown, the tunnel layer 31 also includes a return air tunnel 313, and multiple branch tunnels 312 are arranged at intervals along the inner and outer directions. The multiple branch tunnels 312 are connected through the return air tunnel 313. The logistics shaft 1, the main connecting tunnel 311, multiple branch tunnels 312, the return air tunnel 313 and the service shaft 2 are connected to form a ventilation channel.

[0044] The underground space arrangement system for gravity energy storage of the embodiment of the utility model connects multiple branch tunnels 312 and the main connecting tunnel 311 through the set return air tunnel 313, so as to prevent the branch tunnel 312 from having a dead end tunnel, which causes the accumulation of turbid air in this part and causes poor safety. Then, the logistics shaft 1, the main connecting tunnel 311, the multiple branch tunnels 312, the return air tunnel 313 and the service shaft 2 are connected in sequence to form a ventilation channel, which can improve the safety of the underground space arrangement system.

[0045] Furthermore, a damper 315 is provided on the main communication lane 311 to realize the control function of the ventilation channel; at the same time, it has an opening function to realize the connection between the two sides of the main communication lane 311.

[0046] like Figure 1 and Figure 2 As shown, the main communication tunnel 311 includes a communication tunnel 3111 and a main tunnel 3112, the communication tunnel 3111 is connected between the logistics shaft 1 and the service shaft 2, and the main tunnel 3112 is arranged divergently and connected with the communication tunnel 3111. This is conducive to maximizing the use of underground space and realizing the energy storage and release requirements of the energy storage heavy object 8.

[0047] The spacing between adjacent tunnel layers 31 is 15m-50m. Thus, the problem of easy collapse caused by too small spacing between adjacent tunnel layers 31 can be avoided, and the problem of affecting energy storage density due to too large spacing can also be avoided.

[0048] Optionally, the spacing between adjacent tunnel layers 31 is 15m, 20m, 25m, 30m, 35m, 40m, 45m and 50m.

[0049] Specifically, the spacing between adjacent tunnel layers 31 can be set differently, so that when in use, the energy storage and release requirements can be met according to the energy requirements, and precise energy control can be achieved. According to the geotechnical characteristics, the spacing between adjacent tunnel layers 31 can be determined according to the specific situation. For deep buried tunnels in general fractured rock masses, the affected range is limited to a certain depth around the tunnel, but the vertical spacing between the upper and lower tunnel layers adjacent to each other cannot be too small. A certain distance is required to ensure that the surrounding rock stress of the upper tunnel can be transmitted to the soil around the lower tunnel through this distance, and stress and deformation damage cannot be caused to the lower tunnel.

[0050] like Figure 1 and Figure 2 As shown, the underground space arrangement system for gravity energy storage of the embodiment of the utility model also includes an underground pump room 5, each tunnel layer 31 is provided with a drainage channel 314, and the service shaft 2 is provided with a drainage pipe 21. One end of the drainage pipe 21 extends along the depth direction of the service shaft 2 to the outside of the service shaft 2, and the other end of the drainage pipe 21 is connected to the underground pump room 5, and each drainage channel 314 is connected to the underground pump room 5.

[0051] The underground space arrangement system for gravity energy storage of the embodiment of the utility model can timely discharge the seepage water in the drainage channel 314 in each tunnel layer 31 through the underground pump room 5, and the underground pump room 5 is lower than the lowest height of the drainage pipe 21 so that the water can be gathered in the underground pump room 5, so that the seepage water can be timely gathered in the underground pump room 5, and the internal water can be discharged in time by relying on the drainage pipe 21, thereby ensuring the safety of operations in the underground space arrangement system.

[0052] Further, the underground pump room 5 is lower than the lowest height of the drainage channel 314 so that water can be gathered in the underground pump room 5. Thus, the seeping water automatically flows into the underground pump room 5. Thus, the underground space arrangement system for gravity energy storage solves the problem of water accumulation in the weight storage tunnel 3.

[0053] Furthermore, there may be multiple drainage pipes 21 , and the multiple drainage pipes 21 are all arranged in the service shaft 2 .

[0054] like Figure 1 and Figure 2As shown, the underground space arrangement system for gravity energy storage of the embodiment of the utility model also includes an underground working chamber 6 and a storage chamber 7. The underground working chamber 6 is used to provide underground monitoring equipment and offices for personnel, and the storage chamber 7 is used to provide spare parts.

[0055] The underground space arrangement system for gravity energy storage of the embodiment of the utility model provides a placement and maintenance space and office space for office, storage and monitoring equipment by setting up an underground working chamber 6 and a storage chamber 7. Therefore, the underground space arrangement system has the advantage of improving the convenience of work in the underground space arrangement system.

[0056] like Figure 1 and Figure 2 As shown, each of the logistics shaft 1 and the service shaft 2 extends downward from the ground in a vertical direction. Therefore, the underground space arrangement system for gravity energy storage in the embodiment of the utility model has the advantages of reducing construction costs and facilitating the transportation of energy storage heavy objects 8.

[0057] The depth of logistics shaft 1 is 1000m-2000m.

[0058] Optionally, the depth of the logistics shaft 1 can be more than 300m. Further, the depth of the logistics shaft 1 can be more than 1000m-1500m. For example, the depth of the logistics shaft 1 can be 1000m, 1100m, 1200m, 1300m, 1400m, or 1500m.

[0059] The underground space arrangement system for gravity energy storage is arranged in a closed pit of an underground mine.

[0060] The underground space arrangement system for gravity energy storage of the utility model embodiment can greatly reduce the construction cost of the system by utilizing the underground tunnels of the mine closure. At the same time, the ventilation system facilities in the mine can be further utilized to further reduce the construction cost of the underground space arrangement system. In addition, mine tailings and waste rock can be used as raw materials for the construction of energy storage weights 8 to achieve environmentally friendly, green and low-carbon construction. At the same time, a good solution is proposed for the transformation and development of underground mine closures. Optionally, the energy storage weight 8 can be an energy storage block.

[0061] The gravity energy storage system of the embodiment of the utility model comprises an energy storage weight 8 and an underground space arrangement system for gravity energy storage according to any one of the above items.

[0062] Therefore, the gravity energy storage system of the embodiment of the utility model has the advantages of saving ground space and good ventilation smoothness.

[0063] The energy storage weight 8 is pure concrete, mixed waste rock, tailings or slag. Using pure concrete, mixed waste rock, tailings or slag as the energy storage weight 8 can achieve local material and waste utilization, thereby helping to achieve the advantages of green and low-carbon construction and reducing construction costs.

[0064] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0065] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present utility model, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0066] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection, an electrical connection, or communication with each other; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0067] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0068] In the present utility model, the terms "one embodiment", "some embodiments", "examples", "specific examples", or "some examples" etc. mean that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the described specific features, structures, materials or characteristics may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0069] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations of the present invention. Ordinary technicians in the field can change, modify, replace and modify the above embodiments within the scope of the present invention.

Claims

1. An underground space arrangement system for gravity energy storage, characterized in that: include: A logistics shaft, wherein the logistics shaft is used to transport energy storage heavy objects; A service shaft, wherein the logistics shaft and the service shaft are arranged at intervals and both extend in an up-down direction; A weight storage lane, the weight storage lane is used to store energy storage heavy objects; the weight storage lane extends in a transverse direction, and the weight storage lane intersects with each of the logistics shaft and the service shaft, and the logistics shaft, the weight storage lane and the service shaft are sequentially connected to form a ventilation channel; and A lifting mechanism is installed in the logistics shaft to transport energy storage heavy objects.

2. The underground space arrangement system for gravity energy storage according to claim 1, characterized in that: The weight storage tunnel has multiple tunnel layers, and the multiple tunnel layers are arranged at intervals along the up and down directions of the logistics shaft.

3. The underground space arrangement system for gravity energy storage according to claim 2, characterized in that: Each of the tunnel layers includes a main connecting tunnel and a plurality of branch tunnels for storing energy storage heavy objects. The main connecting tunnel intersects with each of the logistics shaft and the service shaft, and each of the branch tunnels is connected to the main connecting tunnel.

4. The underground space arrangement system for gravity energy storage according to claim 3, characterized in that: The tunnel layer also includes a return air tunnel, and multiple branch tunnels are arranged at intervals along the inner and outer directions. Multiple branch tunnels are connected through the return air tunnel. The logistics shaft, the main connecting tunnel, multiple branch tunnels, the return air tunnel and the service shaft are connected to form a ventilation channel.

5. The underground space arrangement system for gravity energy storage according to claim 3, characterized in that: The main connecting lanes include connecting lanes and main lanes. The connecting lanes are connected between the logistics shaft and the service shaft. The main lanes are divergently arranged and communicated with the connecting lanes.

6. The underground space arrangement system for gravity energy storage according to claim 2, characterized in that: The spacing between adjacent lane layers is 15m-50m; And / or, it also includes an underground pump room, each of the tunnel layers is provided with a drainage channel, the service shaft is provided with a drainage pipe, one end of the drainage pipe extends to the outside of the service shaft along the depth direction of the service shaft, the other end of the drainage pipe is connected to the underground pump room, and each of the drainage channels is connected to the underground pump room.

7. The underground space arrangement system for gravity energy storage according to any one of claims 1 to 6, characterized in that: It also includes an underground working chamber and a storage chamber. The underground working chamber is used to provide underground monitoring equipment and offices for personnel, and the storage chamber is used to provide spare parts.

8. The underground space arrangement system for gravity energy storage according to any one of claims 1 to 6, characterized in that: Each of the logistics shaft and the service shaft extends downward in a vertical direction from the ground; And / or, the logistics shaft has a depth of 1000m-2000m; And / or, the underground space arrangement system for gravity energy storage is arranged in a closed underground mine, and the gravity storage tunnel is an underground tunnel with multiple middle sections and multiple levels in the underground mine.

9. A gravity energy storage system, characterized in that: It comprises energy storage weights and an underground space arrangement system for gravity energy storage according to any one of claims 1-8.

10. The gravity energy storage system according to claim 9, characterized in that: The energy storage heavy object is one of pure concrete, mixed waste rock, tailings and slag.

Images