Regular hexagonal honeycomb-shaped gas storage

Abstract

The regular hexagonal honeycomb-shaped gas storage comprises a shell, the shell comprises a cylindrical shell body extending in the vertical direction, a bottom plate arranged at the bottom of the shell body and a top plate arranged at the top of the shell body, and a plurality of gas storage tanks extending in the vertical direction are installed in an inner cavity of the shell; the air storage tanks are identical in shape, the outer wall of each air storage tank is in a regular hexagon shape, the adjacent air storage tanks are arranged in a regular triangle shape at intervals, resin adhesive is poured between the adjacent air storage tanks, and the shell is of a reinforced concrete structure. The adjacent gas storage tanks are bonded together through the resin adhesive, so that all the main gas storage tanks form a whole, and the self-stability is high. As the thinner gas storage tanks are clustered into a large gas storage, the wall thickness of each gas storage tank can be reduced, the processing difficulty of the gas storage tanks and the total material cost are greatly reduced, and the construction cost of the whole gas storage can be reduced.

Description

Technical Field

[0001] This utility model relates to a regular hexagonal honeycomb gas storage tank. Background Technology

[0002] To mitigate peak-valley power fluctuations, energy storage technologies have been adopted to store electricity generated during off-peak periods and release it during peak periods. Compressed air energy storage, a relatively new technology, has seen increased adoption in recent years. This involves compressing air into compressed air, which is then stored in salt caverns, artificial chambers, or high-pressure gas tanks. During peak periods, the compressed air is released to power generation devices that generate electricity. This technology helps balance load fluctuations in the power system and improves the utilization efficiency of power generation equipment.

[0003] When using compressed air energy storage, the air storage system is a major component. The air storage system determines the construction cost of the energy storage power station and is also key to the operating efficiency and safety of the energy storage power station. Due to the advantage of convenient layout, pressure tanks have been widely used in small compressed air energy storage power stations. Existing pressure tanks are generally used in parallel with multiple sets of pressure tanks. However, due to the high safety requirements and high cost of pressure tanks, the further development of compressed air energy storage is limited. Therefore, how to reduce the construction cost of compressed air energy storage equipment remains a key issue for compressed air energy storage technology. Utility Model Content

[0004] To address the high construction cost of compressed air energy storage facilities, this application proposes a hexagonal honeycomb gas storage tank, comprising an outer shell. The outer shell includes a cylindrical shell extending vertically, a bottom plate at the bottom of the shell, and a top plate at the top. Several vertically extending gas storage tanks are installed within the inner cavity of the outer shell. All gas storage tanks have the same shape, and their outer walls are all hexagonal. Adjacent gas storage tanks are arranged in an equilateral triangle and spaced apart. Resin adhesive is injected between adjacent gas storage tanks. The outer shell is a reinforced concrete structure. The gas storage tank in this application can be constructed as a fully underground, semi-underground, or fully above-ground structure depending on different requirements and construction conditions.

[0005] This application utilizes resin adhesive to bond adjacent gas storage tanks together, forming a single unit with high self-stability. Because it uses a cluster of thinner gas storage tanks to create a large gas storage facility, the wall thickness of each tank can be reduced, significantly lowering the manufacturing difficulty. Although the gas storage facility has structural layers formed by the tank bodies, its overall thickness is still lower than that required when the gas storage facility is used as a single tank. This reduces the total material cost of the gas storage tanks. Combined with the lower manufacturing cost of the smaller tanks, this reduces the overall construction cost of the gas storage facility. In addition to the above advantages, it also has the following advantages:

[0006] High material efficiency: The main gas storage tanks are bonded together with resin adhesive, and the outer shell is made of reinforced concrete to bind all the gas storage tanks together, forming a honeycomb energy storage structure. The outer gas storage tanks can provide additional protection for the inner gas storage tanks.

[0007] Good thermal insulation performance: The low thermal conductivity of the resin adhesive improves the thermal insulation performance of the gas storage tank, preventing heat from the stored air from being transferred outward and improving energy storage efficiency.

[0008] Excellent corrosion resistance and durability: The resin adhesive and reinforced concrete shell provide corrosion protection for the gas storage tank, improving its corrosion resistance and extending its service life.

[0009] Furthermore, to ensure the strength of the tank, the adjacent side walls of the gas storage tank are rounded.

[0010] Furthermore, prestressed anchor cables are installed at the apex corners of the three adjacent gas storage tanks, with both ends of the prestressed anchor cables fixed to the top and bottom plates of the outer shell, respectively. The use of prestressed anchor cables further enhances the constraint on the gas storage tanks, thereby improving their pressure resistance.

[0011] To further reduce construction costs, the inner cavity of the outer shell is divided into at least two sequentially nested tank zones along the radial direction of the outer shell. Within two adjacent tank zones, the wall thickness of the gas storage tank in the outer tank zone is greater than the wall thickness of the gas storage tank in the inner tank zone. To minimize construction costs, within the same tank zone, along the radial direction of the outer shell, the wall thickness of the outer gas storage tank is greater than the wall thickness of the inner gas storage tank among two adjacent gas storage tanks.

[0012] Furthermore, to facilitate construction, the lower end of the prestressed anchor cable is fixed to the steel mesh of the base plate via an anchor plate.

[0013] Specifically, to facilitate resin injection and avoid increasing construction costs, the net distance between the walls of adjacent gas storage tanks should be 15-30mm. If the net distance between the tank walls is too narrow, it will hinder resin injection and may cause voids at the bottom of the gap between adjacent tanks, affecting bonding strength. If the gap is too large, more resin will be needed, increasing construction costs.

[0014] Furthermore, to prevent problems such as sinking, tilting, or floating of the gas storage facility during use, the base plate of the outer shell is cast onto engineering piles. The stability of the gas storage facility is maintained by utilizing the stabilizing effect of the engineering piles on the outer shell. Attached Figure Description

[0015] Figure 1 This is a structural schematic diagram of an embodiment of the present invention.

[0016] Figure 2 yes Figure 1 A top view from angle AA.

[0017] Figure 3 yes Figure 1 Enlarged view of section B.

[0018] Figure 4 This is a structural diagram of the connection between the prestressed anchor cable and the base plate. Detailed Implementation

[0019] The structure of the vertical honeycomb structure gas storage facility in this application is described below. Please refer to [link / reference needed]. Figure 1 and Figure 2 A hexagonal honeycomb gas storage facility includes an outer shell 30, which comprises a cylindrical shell 32 extending vertically, a bottom plate 31 at the bottom of the shell 32, and a top plate 33 at the top of the shell 32. Several vertically extending gas storage tanks 10 are installed within the inner cavity of the outer shell. Each gas storage tank has the same shape and its outer wall is hexagonal. Adjacent gas storage tanks are arranged in an equilateral triangle and spaced apart, creating a honeycomb pattern. The outer shell 30 is a reinforced concrete structure. The inlet and outlet pipes 11 of each gas storage tank are located at the top of the tank, extending upwards from the top plate and connecting to a main inlet and outlet pipe. Engineering piles 38 are installed in the soil below the outer shell, and the bottom plate of the outer shell is cast atop the piles 38. This embodiment is a fully underground structure.

[0020] Please see Figure 3 In this embodiment, to facilitate manufacturing and reduce strength loss due to bending, the adjacent side walls 12 of the gas storage tank are transitioned by arcs 13. Prestressed anchor cables 20 are provided at the apex corners of three adjacent gas storage tanks 10. The two ends of these prestressed anchor cables are respectively fixed to the top and bottom plates of the outer shell. For edge-fixed prestressed anchor cables, please refer to [link to relevant documentation]. Figure 4 An anchor plate 22 is provided at the lower end of the prestressed anchor cable. The anchor plate is welded to the steel mesh 311 of the base plate. The lower end of the prestressed anchor cable is fixed to the anchor plate by the anchor. There are no special requirements for the anchor. The existing anchors of prestressed anchor cables can be used, such as conventional wedge anchors.

[0021] To ensure that all gas storage tanks can form a single unit, the net distance H between the walls of adjacent gas storage tanks is 20 mm, and epoxy resin is injected into the gaps between adjacent gas storage tanks. It is understood that in other embodiments, the net distance H between the walls of adjacent gas storage tanks can also be 15 mm, 25 mm, or 30 mm, or other distances between 15 and 30 mm.

[0022] To ensure safety and minimize construction costs, in this embodiment, the inner cavity of the outer shell is divided into three sequentially nested tank areas along its radial direction. These three tank areas are designated as the first tank area, the second tank area, and the third tank area from the inside out. Figure 1 In this diagram, the gas storage tanks located in the second tank area are marked as II. The first tank area is located inside the second tank area, and the third tank area is located outside the second tank area. The wall thickness of the gas storage tanks in the third tank area is 20 mm, the wall thickness of the gas storage tanks in the second tank area is 15 mm, and the wall thickness of the gas storage tanks in the first tank area is 6 mm. That is, in two adjacent tank areas, the wall thickness of the gas storage tanks located in the outer tank area is greater than the wall thickness of the gas storage tanks located in the inner tank area.

[0023] In this embodiment, along the radial direction of the outer shell, each tank area has multiple layers of gas storage tanks. The first tank area has three layers of gas storage tanks, the second tank area has three layers of gas storage tanks, and the third tank area has two complete layers of gas storage tanks and a partial three-layer gas storage tank. The innermost layer of the first tank area has only one gas storage tank.

[0024] In another embodiment, the wall thickness of the gas storage tanks within the same tank area can be progressively increased from the inside out. The following explanation uses the gas storage tanks in the second tank area as an example. In the second tank area, three layers of gas storage tanks are arranged radially along the outer shell. Each layer of gas storage tanks is arranged in a regular hexagonal pattern, and the wall thickness of each layer can be set sequentially from the inside out to 8mm, 11mm, and 15mm. Alternatively, the second tank area can be divided into two sub-tank areas from the inside out, and the wall thickness of the gas storage tanks in each sub-tank area can be set separately to further reduce the construction cost of the gas storage facility. Of course, depending on different needs, all gas storage tanks can also use the same wall thickness.

[0025] To more clearly illustrate this application, the construction method of the aforementioned regular hexagonal honeycomb gas storage facility is described below, which includes the following steps:

[0026] (1) Construct engineering piles 38 at designated locations, then excavate the foundation pit, lay a cushion layer, and pour the base slab 31. Next, pour the shell 32 onto the base slab. While pouring the base slab 31, simultaneously install the anchor cables. To install the anchor cables, first weld the anchor plate 22 to the reinforcing mesh 311 of the base slab, then fix the anchor cables to the anchor plate using anchorages, and finally pour the concrete for the base slab. The bottom of the PHC pipe pile is poured within the base slab. In this embodiment, PHC pipe piles are specifically used for the engineering piles.

[0027] (2) Arrange each gas storage tank: Arrange each gas storage tank in the shell 32 in sequence. To prevent each gas storage tank from tipping over, a pad can be installed between adjacent gas storage tanks, and an anchor cable hole 36 is opened on the pad to facilitate the installation of anchor cables.

[0028] (3) After the arrangement of each gas storage tank is completed, concrete is poured between the outermost gas storage tank and the shell, and resin glue is injected into the gap between adjacent gas storage tanks. In this embodiment, epoxy resin glue is used. Then the top cover is poured to complete the construction of the shell, so that the upper end of the anchor cable extends upward to the upper surface of the top cover.

[0029] (4) After all parts of the shell have reached the set strength, the anchor cable is tensioned to generate prestress and form a prestressed anchor cable. Then, the upper end of the prestressed anchor cable is locked to the top plate with the anchor.

[0030] It is understood that in other embodiments, the gas storage facility may also adopt a semi-underground structure or a fully above-ground structure.

Claims

1. A regular hexagonal honeycomb gas storage facility, characterized in that, The device includes an outer shell, which comprises a cylindrical shell extending vertically, a bottom plate disposed at the bottom of the shell, and a top plate disposed at the top of the shell. Several gas storage tanks extending vertically are installed in the inner cavity of the outer shell. Each gas storage tank has the same shape and the outer wall of each gas storage tank is a regular hexagon. Adjacent gas storage tanks are arranged in an equilateral triangle and spaced apart. Resin glue is injected between adjacent gas storage tanks. The outer shell is a reinforced concrete structure.

2. The hexagonal honeycomb gas storage tank according to claim 1, characterized in that, The adjacent side walls of the gas storage tank are rounded.

3. The hexagonal honeycomb gas storage tank according to claim 1, characterized in that, Prestressed anchor cables are installed at the top corner spaces of three adjacent gas storage tanks, with the two ends of the prestressed anchor cables fixed to the top and bottom plates of the outer shell, respectively.

4. The hexagonal honeycomb gas storage tank according to claim 1, characterized in that, Along the radial direction of the outer shell, the inner cavity of the outer shell is divided into at least two sequentially nested tank areas from the inside out. In the two adjacent tank areas, the wall thickness of the gas storage tank located in the outer tank area is greater than the wall thickness of the gas storage tank located in the inner tank area.

5. The hexagonal honeycomb gas storage tank according to claim 4, characterized in that, Within the same tank area, along the radial direction of the outer shell, among two adjacent gas storage tanks, the outer gas storage tank has a greater wall thickness than the inner gas storage tank.

6. The hexagonal honeycomb gas storage tank according to claim 1, characterized in that, The lower end of the prestressed anchor cable is fixed to the steel mesh of the base plate via an anchor plate.

7. The hexagonal honeycomb gas storage tank according to claim 1, characterized in that, The net distance between the walls of adjacent gas storage tanks is 15-30mm.

8. The hexagonal honeycomb gas storage tank according to claim 1, characterized in that, The base plate of the outer shell is cast onto the engineering piles.

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