An array of self-supporting gas storage tanks

Abstract

The utility model relates to the technical field of energy storage, disclose a kind of array self-supporting gas storage tank, including plug, straight pipe and multiple tee structure;The straight pipe is arranged vertically in row, and the two ends of the straight pipe of same row are respectively communicated with the upper and lower two multiple tee structures of horizontally corresponding arrangement, form a group of straight pipe fence;Multiple groups of straight pipe fence are arranged in parallel, and the two ends of the multiple tee structure in each group of straight pipe fence are respectively communicated with the left and right two multiple tee structures of horizontally corresponding arrangement, form straight pipe array;The two ends of the multiple tee structure in each group of straight pipe array are connected import and export pipeline or plug.The utility model has realized the uniformity and stability of gas storage, reduced floor area, realized self-supporting;Since main part only plug, straight pipe and multiple tee structure three structures, the degree of standardization is extremely high, can prefabricate and reduce the welding amount of installation site.

Description

TECHNICAL FIELD

[0001] The utility model relates to energy storage technical field, especially involve a kind of array self-supporting gas storage tank. BACKGROUND

[0002] Compressed air energy storage is one of important energy storage technologies, in order to meet the energy storage demand, need to have huge energy storage space, current gas storage usually adopts natural salt cave or artificial ground coil and storage tank. Natural salt cave first needs to find suitable salt cave, second also should meet certain geological characteristics, not all salt caves are suitable for gas storage. And artificial ground coil occupies large area, site excavation and welding workload is larger;The larger the single-tank storage capacity of ground storage tank, the higher the requirement for site environment, storage tank wall thickness and gas charging and discharging pipeline equipment, which will greatly restrict the progress of compressed air energy storage technology. SUMMARY

[0003] To solve the existing problems, the utility model provides a kind of array self-supporting gas storage tank with reasonable design, practical and convenient, aims at improving the uniformity and stability of gas storage, reducing the occupied area, and realizing self-supporting.

[0004] In order to realize the above-mentioned purpose, the utility model provides the following technical scheme.

[0005] An array self-supporting gas storage tank, comprising plug, straight pipe and multiple tee structure;The straight pipes are arranged vertically in rows, and the two ends of the straight pipes in the same row are respectively communicated with the upper and lower multiple tee structures arranged horizontally correspondingly, forming a group of straight pipe fences;The multiple groups of straight pipe fences are arranged in parallel, and the two ends of the multiple tee structures in each group of straight pipe fences are respectively communicated with the left and right multiple tee structures arranged horizontally correspondingly, forming a straight pipe array;The two ends of the multiple tee structures in each group of straight pipe arrays are connected with inlet and outlet pipelines or plugs.

[0006] As a further improvement of the utility model, in the vertically arranged straight pipes, the straight pipes in the middle of the array have larger spacing, and the straight pipes on both sides of the array are arranged at equal intervals.

[0007] As a further improvement of the utility model, the welding between the straight pipes and the multiple tee structures is one of electric welding, two-way welding, parallel welding or laser welding.

[0008] As a further improvement of the utility model, in the multiple groups of parallel arranged straight pipe fences, the straight pipe fences in the middle of the array have larger spacing, and the straight pipe fences on both sides of the array are arranged at equal intervals.

[0009] As a further improvement of the utility model, the welding between the multiple tee structures is one of electric welding, two-way welding, parallel welding or laser welding.

[0010] As a further improvement of the present application, a safety valve is arranged on the multi-three-way structure.

[0011] As a further improvement of the present application, a reducing head is arranged to connect the multi-three-way structure with the inlet and outlet pipelines.

[0012] As a further improvement of the present application, a gas release point is arranged on the multi-three-way structure.

[0013] As a further improvement of the present application, a drainage and blowdown point is arranged on the multi-three-way structure.

[0014] As a further improvement of the present application, the multi-three-way structure is arranged with a drainage slope of not less than 0.1%.

[0015] The present application has the following advantages:

[0016] The arrayed self-supporting gas storage tank realizes the uniformity and stability of gas storage through the vertical straight pipes, the straight pipe fence greatly reduces the occupied area, and can realize self-supporting through the array structure; at the same time, since the main body only has two structures of plug and straight pipe, the circular holes are arranged on the straight pipe to form a multi-three-way structure and a multi-three-way structure, the standardization degree is extremely high, the system is subjected to uniform internal gas pressure, can be completely pre-processed by the factory, reduces the welding amount of the installation site, and is beneficial to guarantee the installation quality and gas storage safety of the storage tank.

[0017] Preferably, by increasing the spacing of the middle straight pipes, the gas flow capacity of the middle region of the storage tank can be improved, while the stability of the two sides is maintained, and the overall gas distribution is optimized; and more space is provided for the middle straight pipes, which can be used for installing additional equipment or performing maintenance operations; in addition, such an arrangement can also help to reduce the thermal stress of the middle straight pipes.

[0018] Preferably, the dense straight pipes and multi-three-way structures are welded, which can ensure the connection strength, improve the overall gas tightness and safety of the storage tank, and ensure the gas storage efficiency of the storage tank.

[0019] Preferably, the larger spacing in the middle provides more operating space for the middle straight pipe fence, which can be used for equipment installation, maintenance or repair. In addition, such an arrangement also helps to optimize the gas flow in the storage tank.

[0020] Preferably, the dense multi-three-way structures and multi-three-way structures are welded, which can ensure the connection strength, improve the overall gas tightness and safety of the storage tank, and ensure the gas storage efficiency of the storage tank.

[0021] Preferably, the arrangement of the safety valve can prevent the internal pressure of the storage tank from exceeding the set value, and improve the safety of the system.

[0022] Preferably, the use of the size head can conveniently connect pipes of different diameters, ensure smooth transition between the multi-three-way structure and the inlet and outlet pipes, reduce fluid resistance, improve gas flow efficiency, and improve the flexibility and adaptability of the connection.

[0023] Preferably, the installation of the gas release point facilitates the periodic discharge of gas in the storage tank for maintenance and inspection.

[0024] Preferably, the hydrophobic drainage point can be used to discharge accumulated water and impurities, keeping the inside of the storage tank clean and dry, which helps to improve the operating efficiency and service life of the storage tank.

[0025] Preferably, the installation of the drainage slope helps to promote the flow of gas-liquid and avoid the accumulation of gas-liquid, improving the drainage efficiency of the storage tank; such slope setting has little effect on the structural stability of the pipe and does not increase additional manufacturing costs. BRIEF DESCRIPTION OF DRAWINGS

[0026] The drawings described herein are for illustrative purposes only and do not in any way limit the scope of the present disclosure. In addition, the shapes and proportions of the components in the drawings are only illustrative and are used to help understand the present disclosure, and are not specific limitations on the shapes and proportions of the components. In the drawings:

[0027] Figure 1 A schematic diagram of an array-type self-supporting gas storage tank according to an embodiment;

[0028] Figure 2 A schematic diagram of a straight pipe fence of an array-type self-supporting gas storage tank according to an embodiment;

[0029] Figure 3 A schematic diagram of a multi-three-way connection of a multi-three-way structure of an array-type self-supporting gas storage tank according to an embodiment;

[0030] Figure 4 A schematic diagram of a multi-three-way connection of a multi-three-way structure of an array-type self-supporting gas storage tank according to an embodiment;

[0031] Wherein, 1, straight pipe; 2, multi-three-way structure; 3, three-way joint; 4, plug; 5, safety valve; 6, size head; 7, gas release point; 8, hydrophobic drainage point; 9, shut-off valve. DETAILED DESCRIPTION

[0032] To enable those skilled in the art to better understand the technical solutions of this utility model, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of this utility model.

[0033] It should be noted that when an element is referred to as being "set on" another element, it can be directly on the other element or there may be an intervening element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only embodiments.

[0034] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0035] Example

[0036] like Figure 1 As shown, this utility model discloses an array-type self-supporting gas storage tank, which includes a plug 4, a straight pipe 1, and a multi-tee structure 2.

[0037] The straight pipe 1 is a pressure-resistant pipe with an inner diameter between 300 and 3000 mm. The appropriate tank material, thickness, and pipe diameter can be selected based on the design pressure of the storage tank. The multi-tee structure 2 can also be modified from the straight pipe 1. A row of holes with diameters corresponding to the inner diameter of the straight pipe 1 are drilled into the straight pipe 1, and equidistant small segments cut from the straight pipe 1 are welded sequentially into the holes, thus forming the multi-tee structure 2. Figure 3 and Figure 4 As shown. Generally, the design pressure of an array-type self-supporting gas storage tank is between 0.5 and 30 MPa. The welding between the straight pipe 1 and the multi-tee structure 2, between the multi-tee structures 2 themselves, and during the prefabrication of the multi-tee structure 2 can all be done using electric welding, MIG welding, parallel welding, or laser welding to ensure airtightness; the welded joints need to undergo an airtightness test, such as an ammonia test. The plug 4 and the multi-tee structure 2 have corresponding inner and outer diameters to the straight pipe 1.

[0038] An array type self-supporting gas storage tank can have multiple inlets, each of which can also be used as an outlet. As shown in Figure 1 , the inlets are arranged at the front ends of the lower two multi-t junctions 2, which also serve as outlets. The specific positions of the inlets and outlets of the tank are determined in combination with the actual engineering requirements.

[0039] The straight pipes 1 are arranged vertically in rows. The two ends of the straight pipes 1 in the same row are respectively welded in communication with the upper and lower multi-t junctions 2 arranged horizontally correspondingly, forming a group of straight pipe fences, as shown in Figure 2 . The number of straight pipes 1 in the same row can be determined according to the gas storage volume requirement. This standardized straight pipe fence design is convenient for manufacturing, assembly and welding.

[0040] Optionally, as shown in Figure 3 and Figure 4 , the multi-t junctions 2 are made of straight pipes 1, and the material, thickness and pipe diameter of the tank are the same as those of the straight pipes 1, so as to facilitate the machining during prefabrication and the welding on site, and save costs. At the same time, the same pipe material, thickness and pipe diameter are also conducive to avoiding stress concentration caused by uneven distribution of internal pressure. In addition, the straight pipe segments arranged on the multi-t junctions 2 are kept a certain distance apart to avoid too many holes reducing the overall connection strength of the tank and the straight pipes 1.

[0041] Optionally, the two ends of the straight pipes 1 in the same row are respectively connected in communication with the upper and lower connecting straight pipes arranged horizontally correspondingly through the three-way joints 3, forming a group of straight pipe fences. The three-way joints 3 are used to connect the multi-t junctions 2, and can be selected as standard parts. A plurality of groups of straight pipe fences are arranged in parallel. The two ends of the connecting straight pipes in each group of straight pipe fences are respectively connected in communication with the left and right fence connecting straight pipes arranged horizontally correspondingly through the three-way joints 3, forming a straight pipe array. The two ends of the fence connecting straight pipes are connected with the inlet and outlet pipes or plugs 4.

[0042] Through the vertical straight pipes 1, the uniformity and stability of gas storage are achieved. The straight pipe fence greatly reduces the occupied area, and can realize self-supporting through the array structure. At the same time, since the main body only includes plugs 4, multi-t junctions 2 (or three-way joints 3) and straight pipes 1, the multi-t junctions 2 can be made by opening circular holes on the straight pipes 1 and then welding the straight pipe segments at equal intervals. The degree of standardization is extremely high, the internal pressure of the system is uniform, the tank can be completely prefabricated by the factory, the welding amount at the installation site is reduced, which is conducive to ensuring the installation quality and gas storage safety of the tank.

[0043] The vertical row arrangement mode of the straight pipes 1 is equal-interval arrangement between the straight pipes 1. The equal-interval arrangement in rows can ensure the uniformity of gas flow in the tank, reduce local resistance, and improve the efficiency and safety of gas storage.

[0044] Optionally, as shown in Figure 1As shown, the straight pipes 1 are arranged in a vertical row with larger spacing in the middle and equal spacing on both sides. By increasing the spacing of the straight pipes 1 in the middle, the gas flow capacity of the middle region of the storage tank can be improved, while maintaining the stability on both sides, optimizing the overall gas distribution; and providing more space for the straight pipes 1 in the middle, which can be used for installing additional equipment or performing maintenance operations; in addition, this arrangement can also help to reduce the thermal stress of the straight pipes 1 in the middle and leave expansion space.

[0045] The straight pipe fence is arranged in multiple groups in parallel, and the straight pipe fences are arranged at equal intervals. The equal interval arrangement of the straight pipe fences can ensure the consistency and symmetry of the entire internal structure of the storage tank, help to balance the internal pressure and improve the structural stability, and the equal interval arrangement can also help to reduce the complexity of manufacturing and installation.

[0046] Alternatively, the straight pipe fence is arranged in multiple groups in parallel, and the straight pipe fences in the middle of the array have larger spacing, while the straight pipe fences on both sides of the array are arranged at equal intervals. The larger spacing in the middle provides more operating space for the straight pipe fences in the middle, which can be used for equipment installation, maintenance or repair. In addition, this arrangement also helps to optimize the gas flow in the storage tank, relieve the thermal expansion pressure in the middle of the overall structure, and increase the ventilation space.

[0047] The storage tank also includes a safety valve 5 arranged on the multi-tube structure 2. When the gas pressure in the storage tank rises above a specified value, the gas is discharged to the outside of the system to prevent the gas pressure in the storage tank from exceeding the specified value. The arrangement of the safety valve 5 can prevent the internal pressure of the storage tank from exceeding the set value, which is important for personal safety and equipment operation.

[0048] The storage tank also includes a reducer 6 connecting the multi-tube structure 2 to the inlet and outlet pipes. The use of the reducer 6 can conveniently connect pipes of different diameters, ensure smooth transition between the multi-tube structure 2 and the inlet and outlet pipes, reduce fluid resistance, improve gas flow efficiency, and improve the flexibility and adaptability of the connection.

[0049] The storage tank also includes a gas vent point 7 arranged on the multi-tube structure 2, and the number of vent points is determined according to the arrangement. The vent point 7 should be arranged at the highest point of the overall storage tank, and one should be arranged at a certain interval to facilitate the discharge of gas in the pipe; the orientation of the vent point 7 is generally set on the upwind side of the city's minimum frequency wind direction throughout the year, and the vent point 7 is arranged to facilitate periodic discharge of gas in the storage tank for maintenance and inspection.

[0050] The tank also comprises hydrophobic drainage points 8 arranged on the multi-tap structure 2, the number of which is determined according to the arrangement needs. The hydrophobic drainage points 8 adopt single-double valves, which can be determined according to the design pressure. The hydrophobic drainage points 8 can be used to discharge accumulated water and impurities during regular maintenance, so as to keep the inside of the tank clean and dry, which helps to improve the operation efficiency and service life of the tank. Sometimes during the gas storage operation, the compressed air in the tank will also absorb heat to generate a certain amount of water, which can be discharged through the hydrophobic drainage points 8.

[0051] As shown in Figure 1 The tank also comprises a shut-off valve 9 arranged on the pipeline between the size head 6 and the inlet and outlet, which is used to close or open the multi-tap structure 2 of the tank for charging and discharging.

[0052] The horizontal laying of the multi-tap structure 2 can increase a drainage slope of not more than 0.1%, and the slope points to the hydrophobic drainage points 8 and the discharge points 7. The slope can be adjusted by adjusting the depth of the straight pipe 1 extending into the multi-tap structure 2 or the depth of the straight pipe 1 extending into the tee joint 3 during welding. The setting of the drainage slope helps to promote the flow of gas and liquid, avoid the accumulation of gas and liquid, and improve the water efficiency of the tank. The setting of the slope has little effect on the structural stability of the pipeline and will not increase the additional manufacturing cost.

[0053] The entire tank is a uniform distribution structure of a straight pipe array, so other connection points can also be added on the straight pipe fence for medium monitoring, conveying or other purposes.

[0054] In summary, the utility model can reduce the occupied area and realize self-supporting through the array structure.

[0055] The working principle of the array type self-supporting gas tank is as follows:

[0056] The straight pipes 1 are vertically and side by side arranged and connected with the multi-tap structure 2 or the tee joint 3, forming a straight pipe fence;

[0057] The straight pipe fence is arranged in parallel and connected with the multi-tap structure 2 or the tee joint 3, forming a straight pipe array;

[0058] The plugs 4 are installed on the straight pipe array; according to the design needs, the safety valves 5, the size heads 6, the discharge points 7, the hydrophobic drainage points 8 or the shut-off valves 9 are installed on the straight pipe array;

[0059] The medium gas is injected through the inlet and outlet to enter the working state.

[0060] The above embodiment is only one of the implementation manners capable of implementing the technical scheme of the present application, and the scope of the present application is not limited to the above embodiment, and any changes, substitutions and other implementation manners easily thought of by those skilled in the art within the technical scope disclosed by the present application are also included. Although the embodiments of the present application have been shown and described, it can be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to the embodiments without departing from the principles and spirit of the present application, and the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. An array of self-supporting gas storage tanks characterized in that, It comprises a plug (4), a straight pipe (1) and a multi-three-way structure (2); the straight pipes (1) are arranged vertically in rows, the two ends of the straight pipes (1) in the same row are respectively communicated with the upper and lower multi-three-way structures (2) arranged horizontally and correspondingly, forming a group of straight pipe fences; the straight pipe fences are arranged in parallel in multiple groups, the two ends of the multi-three-way structures (2) in each group of straight pipe fences are respectively communicated with the left and right multi-three-way structures (2) arranged horizontally and correspondingly, forming a straight pipe array; the two ends of the multi-three-way structures (2) in each group of straight pipe arrays are connected with inlet and outlet pipelines or plugs (4).

2. An arrayed self-supporting gas storage tank according to claim 1, wherein, In the vertically arranged straight pipes (1), the straight pipes (1) in the middle of the arrangement have a larger spacing, and the straight pipes (1) on both sides of the arrangement are arranged at equal intervals.

3. The arrayed self-supporting gas storage tank of claim 1, wherein, The welding between the straight pipe (1) and the multi-three-way structure (2) is one of electric welding, two-way welding, parallel welding or laser welding.

4. The arrayed self-supporting gas storage tank of claim 1, wherein, In the multiple groups of parallel arranged straight pipe fences, the straight pipe fences in the middle of the array have a larger spacing, and the straight pipe fences on both sides of the array are arranged at equal intervals.

5. The arrayed self-supporting gas storage tank of claim 1, wherein, The welding between the multi-three-way structures (2) is one of electric welding, two-way welding, parallel welding or laser welding.

6. The arrayed self-supporting gas storage tank of claim 1, wherein, It also comprises a safety valve (5) arranged on the multi-three-way structure (2).

7. The arrayed self-supporting gas storage tank of claim 1, wherein, It also comprises a reducing head (6) connecting the multi-three-way structure (2) with the inlet and outlet pipelines.

8. An arrayed self-supporting gas storage tank according to claim 7, wherein, It also comprises a gas venting point (7) arranged on the multi-three-way structure (2).

9. The arrayed self-supporting gas storage tank of claim 1, wherein, It also comprises a drain and sewage point (8) arranged on the multi-three-way structure (2).

10. The arrayed self-supporting gas storage tank of claim 1, wherein, The multi-three-way structure (2) is provided with a water drainage slope of not less than 0.1%.

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