Compressed air overground gas storage device

Abstract

The utility model provides a compressed air overground gas storage device. The compressed air overground gas storage device comprises a main pipeline, a plurality of gas storage unit groups and a plurality of connecting pipeline assemblies, the main pipeline, the plurality of gas storage unit groups and the plurality of connecting pipeline assemblies are respectively prefabricated and formed into independent components. Wherein each air storage unit group comprises at least one air storage tank, the axis of the air storage tank extends in the horizontal direction, the diameter of the axis of the air storage tank is smaller than 3.5 m, and the pipelines connected with the pipeline assembly are detachably connected with the air storage tanks, so that the air storage tanks can be produced in a factory in a concentrated mode and transported to a site where the compressed air overground air storage device is installed. Therefore, the quality of the gas storage tank is conveniently controlled, the safety is improved, the labor cost caused by field welding and the time cost caused by preparation, construction and inspection are also reduced, and the problem of environmental pollution caused by field welding is also avoided.

Description

Technical Field

[0001] This utility model relates to the field of compressed air energy storage and power generation technology, and in particular to a compressed air above-ground storage device. Background Technology

[0002] Compressed air energy storage (CAES) power generation technology utilizes compressed air energy storage (CAES) to store electrical energy during off-peak hours and release it when needed, thereby achieving grid connection for power generation. It belongs to the category of new energy power generation technology. CAES power plants primarily utilize above-ground and underground storage facilities. Considering geographical factors, manufacturing costs, and construction time, above-ground storage facilities are superior. Above-ground CAES storage facilities composed of standard storage units offer advantages such as flexible site selection, low cost, short construction period, and high safety and reliability.

[0003] Currently, there is no successfully implemented standardized above-ground compressed air storage system globally. Existing above-ground compressed air storage systems mostly utilize on-site welding of pressure-bearing equipment. However, this construction method presents the following problems during pipeline assembly and other construction processes:

[0004] (1) On-site welding requires extremely high skill levels from welders, and the welding quality is greatly affected by environmental factors (such as temperature, humidity, wind speed, etc.), making it difficult to guarantee that every weld will meet the design requirements for strength and sealing. Welding defects (such as cracks, slag inclusions, lack of fusion, etc.) may lead to the risk of leakage or even explosion of the gas storage facility during use.

[0005] (2) On-site welding and assembly require a significant amount of time for preparation, construction, and inspection, especially for the construction of large gas storage facilities. The long construction period directly impacts the overall project schedule and cost. Furthermore, prolonged construction may increase the impact on the surrounding environment.

[0006] (3) In addition to direct material and labor costs, on-site welding also requires additional costs for quality control, inspection, and repair. If the welding quality is substandard, rework is required, further increasing the overall cost.

[0007] (4) Long-term construction activities and welding operations may cause certain pollution to the environment, such as noise, dust, and harmful gas emissions, which will have an adverse impact on the surrounding residents and the ecological environment. Utility Model Content

[0008] The purpose of this invention is to solve the problems of existing above-ground compressed air storage systems, which require on-site welding, leading to difficulties in quality assurance and high costs.

[0009] To solve the above-mentioned technical problems, this utility model provides a compressed air above-ground storage device, comprising multiple storage unit groups, multiple connecting pipe assemblies, and a main pipeline, each prefabricated as an independent component; each storage unit group includes at least one storage tank; the axis of the storage tank extends horizontally, and the diameter of the storage tank is less than 3.5 meters; each storage tank is provided with an inlet and an outlet; the multiple connecting pipe assemblies are arranged one-to-one with the multiple storage unit groups; each connecting pipe assembly includes a pipe and a shut-off valve, the pipe is provided with an inlet port and an outlet port, the number of inlet ports of each connecting pipe assembly is adapted to the number of storage tanks in each storage unit group, and the inlet ports correspond one-to-one with the inlet and outlet ports of the storage tanks and are detachably connected; the shut-off valve is connected in series on the pipe to control the on / off connection between the inlet and outlet ports; the outlet ports of the multiple connecting pipe assemblies are all connected to the main pipeline, which is used to connect to an air compressor and a power generation device.

[0010] In some embodiments of this application, the pipeline includes a main connecting pipe and connecting branch pipes. The main connecting pipe is provided with the air outlet, and the main connecting pipe is detachably connected to the main pipe through the air outlet. The number of connecting branch pipes is equal to the number of air storage tanks in the same air storage unit group. One end of the connecting branch pipe is connected to the main connecting pipe, and the other end is provided with the air inlet. The connecting branch pipe is detachably connected to the air inlet and outlet through the air inlet. The shut-off valve is provided on the main connecting pipe or the connecting branch pipe.

[0011] In some embodiments of this application, each of the connecting pipe assemblies further includes a temperature sensor, a pressure sensor, and a safety relief valve, wherein the temperature sensor, the pressure sensor, and the safety relief valve are all installed on the pipe between the shut-off valve and the inlet / outlet.

[0012] In some embodiments of this application, the temperature sensor, the pressure sensor, and the safety relief valve are integrated into the main connection pipe.

[0013] In some embodiments of this application, the main pipeline includes an air inlet and an air outlet. The air inlet is connected to an air inlet control valve and an air compressor, and the air inlet control valve is located on the side of the air compressor near the air outlet. The air outlet is connected to an air outlet control valve and a generator, and the air outlet control valve is located on the side of the generator near the air inlet. The air outlet ports of multiple connecting pipeline assemblies can be detachably connected between the air inlet control valve and the air outlet control valve.

[0014] In some embodiments of this application, the axial length of the gas storage tank is less than 25 meters.

[0015] In some embodiments of this application, multiple gas storage unit groups are spaced apart along the length of the main pipeline, and multiple gas outlet interfaces of connecting pipeline assemblies are spaced apart along the length of the main pipeline.

[0016] In some embodiments of this application, each gas storage unit group includes multiple gas storage tanks that are separately arranged, and the multiple gas storage tanks are stacked vertically or arranged side by side horizontally.

[0017] In some embodiments of this application, each gas storage unit group includes multiple gas storage tank groups spaced apart in the horizontal direction, and each gas storage tank group includes multiple separate gas storage tanks stacked vertically.

[0018] In some embodiments of this application, each of the gas storage tanks is provided with a drain port at the bottom; the compressed air above-ground gas storage device also includes a drain pipe and a drain control valve, the drain pipe is detachably connected to the drain port, and the end of the drain pipe away from the drain port is inclined downward; the drain control valve is connected to the drain pipe to control the opening and closing of the drain pipe.

[0019] As can be seen from the above technical solution, the beneficial effects of this utility model are as follows:

[0020] The compressed air above-ground storage unit of this application includes a main pipeline, multiple storage unit groups, and multiple connecting pipe assemblies; the main pipeline, multiple storage unit groups, and multiple connecting pipe assemblies are prefabricated as independent components. Each storage unit group includes at least one storage tank, the axis of which extends horizontally and has a diameter of less than 3.5 meters. The pipes of the connecting pipe assemblies are detachably connected to the storage tanks, allowing the storage tanks to be centrally manufactured in the factory and transported to the installation site of the compressed air above-ground storage unit. This facilitates quality control of the storage tanks, improves safety, reduces labor costs associated with on-site welding, and minimizes the time costs associated with preparation, construction, and inspection. It also avoids environmental pollution problems caused by on-site welding. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the structure of a compressed air above-ground storage device in one embodiment.

[0022] Figure 2 This is a schematic diagram of the connection structure between the gas storage unit group and the connecting pipeline assembly in one embodiment.

[0023] Figure 3 This is a front view schematic diagram of a configuration in which multiple gas storage tanks are stacked vertically in one embodiment.

[0024] Figure 4 yes Figure 3 A schematic diagram of the right-side structure.

[0025] Figure 5 This is a schematic diagram of the connection structure between the drain pipe, the drain control valve, and the gas storage tank in one embodiment.

[0026] The reference numerals in the attached drawings are explained as follows: 1-Gas storage unit group; 11-Gas storage tank; 111-Gas inlet / outlet; 112-Drain outlet; 12-Lower support frame; 13-Upper support frame; 2-Connecting pipe assembly; 21-Pipe; 211-Main connecting pipe; 2111-Outlet port; 212-Branch connecting pipe; 2121-Inlet port; 22-Shut-off valve; 23-Temperature sensor; 24-Pressure sensor; 25-Safety relief valve; 3-Main pipe; 4-Inlet control valve; 5-Air compressor; 6-Outlet control valve; 7-Power generator; 81-Drain pipe; 811-Main drain pipe; 812-Branch drain pipe; 82-Drain control valve; 83-Main drain pipe. Detailed Implementation

[0027] Typical embodiments embodying the features and advantages of this utility model will be described in detail in the following description. It should be understood that this utility model can have various variations in different embodiments, all of which do not depart from the scope of this utility model, and the descriptions and illustrations therein are for illustrative purposes only and not intended to limit this utility model.

[0028] In the description of this application, it should be understood that, in the embodiments shown in the accompanying drawings, the indications of direction or positional relationships (such as up, down, left, right, front, and back) are merely for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. These descriptions are appropriate when these elements are in the positions shown in the accompanying drawings. If the description of the positions of these elements changes, these directional indications also change accordingly.

[0029] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the stated features. In the description of this application, "a plurality of" means two or more, unless otherwise explicitly specified.

[0030] See Figure 1 To address the numerous problems existing in existing above-ground compressed air storage facilities that mostly employ on-site welding pressure-bearing equipment, this application provides an above-ground compressed air storage device. The above-ground compressed air storage device includes multiple storage unit groups 1, multiple connecting pipe assemblies 2, and a main pipeline 3. The multiple connecting pipe assemblies 2 are configured one-to-one with the multiple storage unit groups 1, and the storage tank 11 of each storage unit group 1 is connected to the main pipeline 3 via the connecting pipe assemblies 2.

[0031] The main pipeline 3 includes an inlet end and an outlet end. The inlet end is connected to an inlet control valve 4 and an air compressor 5, with the inlet control valve 4 located on the side of the air compressor 5 near the outlet end. The outlet end is connected to an outlet control valve 6 and a generator 7, with the outlet control valve 6 located on the side of the generator 7 near the inlet end. Multiple connecting pipe assemblies 2 are connected between the inlet control valve 4 and the outlet control valve 6. The generator 7 includes a turbine and a generator. The turbine is connected to the main pipeline 3, allowing the pressurized gas in the main pipeline 3 to drive the turbine impeller to rotate, thereby outputting power. The generator shaft is connected to the turbine impeller shaft, so that when the pressurized gas drives the turbine impeller to rotate, it drives the generator shaft to rotate, thus generating electricity.

[0032] The air compressor 5 and the generator of the power generation unit 7 are electrically connected to the power grid. When the power grid is in a low-demand period, the air outlet control valve 6 is closed and the air inlet control valve 4 is opened. The air compressor 5 operates using electricity from the power grid, compressing external air into the air storage tanks 11 of the multiple air storage unit groups 1. When the power grid is in a high-demand period, the air inlet control valve 4 is closed and the air outlet control valve 6 is opened, causing the high-pressure gas in the air storage tanks 11 to drive the power generation unit 7 to generate electricity. The electricity generated by the power generation unit 7 is fed into the power grid, avoiding insufficient electricity during peak demand and energy waste during low-demand periods.

[0033] The multiple gas storage unit groups 1, multiple connecting pipe assemblies 2, and main pipelines 3 of this application are prefabricated as independent components, making each independent component smaller in size. This allows each independent component to be manufactured in the factory and transported from the factory to the installation site, thereby reducing the labor costs associated with on-site welding and the time costs associated with preparation, construction, and inspection, and also avoiding the environmental pollution problems caused by on-site welding.

[0034] See Figure 2 and Figure 3 Each gas storage unit group 1 includes at least one gas storage tank 11. Specifically, each gas storage unit group 1 is provided with multiple separately arranged gas storage tanks 11, such as two, three, four or more, and the multiple gas storage tanks 11 in each group are prefabricated as independent components. In other embodiments, each gas storage unit group 1 includes one gas storage tank 11.

[0035] Each gas tank 11 has its axis extending horizontally, meaning it is a horizontal tank. The diameter of each gas tank 11 is less than 3.5 meters, allowing each tank to be manufactured in a factory and transported to the installation site. For example, the diameter of the gas tank 11 could be 3 meters or 1.5 meters. If the diameter of the gas tank 11 is greater than 3.5 meters, transporting it would require occupying adjacent roads, disrupting traffic. Furthermore, existing semi-trailers are typically less than 3 meters wide. When the diameter of the gas tank 11 is greater than 3.5 meters, it becomes inconvenient to secure it to the semi-trailer for transport. For instance, when transporting a 4-meter diameter gas tank 11 using a 2.5-meter wide semi-trailer, the width of the gas tank 11 would significantly exceed the width of the semi-trailer, making it difficult for the semi-trailer to maintain balance during transport and increasing the risk of tipping over. Customizing dedicated transport vehicles would significantly increase costs.

[0036] It should be noted that the width of existing semi-trailers is usually 2.5 meters, with some widened vehicles reaching 3.2 meters. Therefore, the diameter of the gas storage tank 11 is preferably less than 3 meters, for example, the diameter of the gas storage tank 11 is 3 meters, 2.5 meters, or 1.5 meters, so that the gas storage tank 11 can be transported using existing semi-trailers.

[0037] Existing semi-trailers are typically less than 17.5 meters long. The axial length of the gas storage tank 11 in this application is less than 25 meters, ensuring that when the gas storage tank 11 is placed on an existing semi-trailer, its center of gravity is located on the semi-trailer. This facilitates vehicle stability and prevents the tractor unit from being lifted due to an excessively rearward center of gravity, thus ensuring transport safety. In other words, by setting the axial length of the gas storage tank 11 to less than 25 meters, existing semi-trailers can be used for transportation, eliminating the need for customized transport vehicles.

[0038] Preferably, the axial length of the gas storage tank 11 is 10-20 meters, so that when the gas storage tank 11 is placed on an existing semi-trailer, most of its volume is located on the semi-trailer. For example, if the axial length of the gas storage tank 11 is 14 meters, it can be transported using a semi-trailer with a cargo box length of 13 meters. Moreover, when the gas storage tank 11 is placed on the semi-trailer, the rear of the gas storage tank 11 only extends 1 meter beyond the cargo box, meaning that most of the volume of the gas storage tank 11 is located on the cargo box of the semi-trailer, and the center of gravity of the gas storage tank 11 is located on the cargo box of the semi-trailer. This allows existing semi-trailers to safely transport the gas storage tank 11 of this application without the need for customized special transport vehicles, thus reducing costs.

[0039] The gas storage tank 11 is designed to be manufactured in the factory and transported to the installation site for installation. This factory production method makes it easier to control the quality of the gas storage tank 11, ensuring that each gas storage tank 11 meets the design requirements for strength and sealing. It also avoids the problem of quality compromise caused by environmental factors during on-site welding.

[0040] In one embodiment, multiple gas storage tanks 11 of the same gas storage unit group 1 are stacked vertically to reduce the floor space occupied. Specifically, a lower support frame 12 is fixedly provided on the bottom surface of the gas storage tank 11. The lower support frame 12 is used to support the gas storage tank 11 to maintain the stability of the gas storage tank 11, and also to ensure that there is a certain distance between the bottom of the gas storage tank 11 and the ground.

[0041] See Figure 3 and Figure 4 The top surface of the gas storage tank 11 is also fixedly provided with an upper support frame 13. The upper support frame 13 is used to connect with the lower support frame 12 of the gas storage tank 11 located above it, so as to support the upper gas storage tank 11 and realize the vertical stacking of multiple gas storage tanks 11. It should be noted that the upper support frame 13 and the lower support frame 12 can be formed into an integral structure with the gas storage tank 11 by welding at the factory. The uppermost gas storage tank 11 may also not be provided with an upper support frame 13.

[0042] In one embodiment, multiple gas storage tanks 11 of the same gas storage unit group 1 are arranged side by side in a horizontal direction. It should be noted that in this embodiment, each gas storage tank 11 is provided with a lower support frame 12, but the upper support frame 13 may not be provided.

[0043] In one embodiment, each gas storage unit group 1 includes multiple gas storage tank groups spaced apart in the horizontal direction. Each gas storage tank group includes multiple separate gas storage tanks 11 stacked vertically, which reduces the floor space occupied by the gas storage unit group 1 and avoids the stacked gas storage tanks 11 from being too tall, affecting stability and making maintenance inconvenient.

[0044] In one embodiment, the number of gas storage tanks 11 in the multiple gas storage unit groups 1 may be different. The arrangement of the gas storage tanks 11 in the multiple gas storage unit groups 1 may also be different.

[0045] Each gas storage tank 11 is equipped with an inlet / outlet port 111. Figure 3 In the illustrated embodiment, the air inlet / outlet 111 is located at one end of the air storage tank 11 along its axial direction. In other embodiments, the air inlet / outlet 111 may also be located at the top of the air storage tank 11.

[0046] Each gas storage tank 11 is equipped with a drain port 112 at its bottom, located at the lowest point of the tank 11, allowing wastewater formed by the condensation of water vapor in the air inside the tank 11 to be discharged through the drain port 112. The lower support frame 12 ensures that the drain port 112 is positioned at the lowest point of the tank 11 without obstructing the discharge of wastewater. Each gas storage tank 11 is also equipped with an exhaust port at its top, allowing all pressurized gas inside the tank 11 to be discharged during maintenance.

[0047] See Figure 1 and Figure 2 Each connecting pipe assembly 2 includes a pipe 21 and a shut-off valve 22. The pipe 21 is provided with an air inlet 2121 and an air outlet 2111. The number of air inlets 2121 in each connecting pipe assembly 2 is adapted to the number of air storage tanks 11 in each air storage unit group 1, and the air inlets 2121 correspond one-to-one with the air inlets and outlets 111 of the air storage tanks 11 and are detachably connected. The shut-off valve 22 is connected in series with the pipe 21 to control the on / off connection between the air inlet 2121 and the air outlet 2111. This configuration allows each gas storage tank 11 in the gas storage unit group 1 to be controlled via the corresponding shut-off valve 22 of the connecting pipeline assembly 2. During peak electricity demand in the power grid, in addition to controlling the inlet control valve 4 to close and the outlet control valve 6 to open, some shut-off valves 22 are opened according to gas pressure requirements. This allows the high-pressure gas in the gas storage tank 11 to drive the power generation device 7 to generate electricity. Furthermore, it ensures stable airflow into the power generation device 7, keeping it in its optimal operating efficiency range and improving energy conversion efficiency. In other words, the number of shut-off valves 22 that can be opened can be set according to the demand for pressurized gas.

[0048] For example, the gas storage unit group 1 is provided with four groups, namely the first gas storage unit group, the second gas storage unit group, the third gas storage unit group, and the fourth gas storage unit group. When the power generation device 7 needs to work, the shut-off valve 22 corresponding to the first gas storage unit group is opened, so that the pressurized gas in the gas storage tank 11 of the first gas storage unit group drives the power generation device 7 to work. When the pressure of the pressurized gas in the gas storage tank 11 of the first gas storage unit group is lower than the set value, the pressure of the gas storage tank 11 of the second gas storage unit group is switched to drive the power generation device 7 to work, and so on, until the pressure of the gas in the gas storage tank 11 of all gas storage unit groups 1 is lower than the set value. Then, the shut-off valves 22 of multiple gas storage unit groups 1 are controlled to open, so that the pressurized gas in the gas storage tank 11 of multiple gas storage unit groups 1 drives the power generation device 7 to work, thereby ensuring a stable output gas pressure while making full use of the gas in each gas storage tank 11. When the power grid is experiencing a low electricity demand, the exhaust control valve 6 is closed, while the intake control valve 4 and the shut-off valve 22 are opened. The air compressor 5 utilizes the excess electricity from the power grid to compress external air into the storage tanks 11 of the multiple storage unit groups 1. It should be noted that when replenishing pressurized gas into the storage tanks 11 of the storage unit group 1, the shut-off valve 22 corresponding to the fully filled storage tank 11 may remain closed, allowing gas to be replenished only into the storage tank 11 that requires replenishment.

[0049] Pipeline 21 includes a main connecting pipe 211 and connecting branch pipes 212. The main connecting pipe 211 is provided with an outlet port 2111, and a first connecting flange is provided at the outlet port 2111. The main connecting pipe 211 is detachably connected to the main pipeline 3 through the first connecting flange at the outlet port 2111, making the connection between the connecting pipeline assembly 2 and the main pipeline 3 convenient. The number of connecting branch pipes 212 is equal to the number of gas storage tanks 11 in the same gas storage unit group 1. One end of the connecting branch pipe 212 is connected to the main connecting pipe 211, and the other end is provided with an inlet port 2121. The connecting branch pipe 212 is provided with a second connecting flange at the inlet port 2121, and the connecting branch pipe 212 is detachably connected to the inlet / outlet port 111 of the gas storage tank 11 through the second connecting flange at the inlet port 2121. This arrangement makes the connection between the connecting pipeline assembly 2 and the gas storage tank 11 and the main pipeline 3 more convenient. It should be noted that the connection between the connecting pipe assembly 2 and the gas storage tank 11 and the main pipeline 3 can also be a threaded connection.

[0050] The connecting main pipe 211 and the connecting branch pipe 212 can be welded together or formed as one piece, so that the connecting main pipe 211 and the connecting branch pipe 212 are prefabricated as independent components.

[0051] The diameter of pipe 21 is smaller than that of the main pipeline 3, so that the flow velocity of the pressurized gas in pipe 21 is lower than that in the main pipeline 3. Therefore, the flow velocity of the pressurized gas in the main pipeline 3 can be controlled by controlling the number of open shut-off valves 22. For example, when one shut-off valve 22 on the connecting pipe assembly 2 is open, the flow rate through the main pipeline 3 is 0.1 m / s to 10 m / s; when five shut-off valves 22 on the connecting pipe assemblies 2 are open, the flow rate through the main pipeline 3 is 0.5 m / s to 50 m / s. Thus, the power generation capacity of the power generation device 7 can be controlled by controlling each shut-off valve 22.

[0052] exist Figure 1 and Figure 2 In the illustrated embodiment, the shut-off valve 22 is installed on the main connecting pipe 211, allowing one shut-off valve 22 to control the connection and disconnection between multiple gas storage tanks 11 in the same gas storage unit group 1 and the main pipe 3, reducing the number of valves used and lowering costs. It should be noted that a shut-off valve 22 can also be installed on each connecting branch pipe 212, allowing each gas storage tank 11 to control its connection and disconnection with the main pipe 3 through a corresponding shut-off valve 22.

[0053] Each connecting pipe assembly 2 also includes a temperature sensor 23, a pressure sensor 24, and a safety relief valve 25. The temperature sensor 23, pressure sensor 24, and safety relief valve 25 are all installed on the pipe 21 between the shut-off valve 22 and the inlet / outlet 111, so that the temperature sensor 23 can detect the gas temperature of the gas storage tank 11 in real time, the pressure sensor 24 can detect the gas pressure of the gas storage tank 11 in real time, and the safety relief valve 25 can keep the gas pressure of the gas storage tank 11 within a safe range.

[0054] Temperature sensor 23, pressure sensor 24, and safety relief valve 25 are integrated on the connecting main pipe 211, ensuring that gas flowing from the main pipe 3 to the gas storage tank 11 and vice versa passes through these components, thus improving the accuracy of the data detected by the temperature sensor 23 and pressure sensor 24. It should be noted that since multiple gas storage tanks 11 and multiple connecting branch pipes 212 within the same gas storage unit group 1 are interconnected, temperature sensor 23, pressure sensor 24, and safety relief valve 25 can also be installed on one of the connecting branch pipes 212.

[0055] Each connecting pipe assembly 2 is prefabricated as an independent component, and each air storage tank 11 is also prefabricated as an independent component. This allows the airtightness of the connecting pipe assembly 2 and the air storage tank 11 to be tested in the production workshop. As a result, after on-site installation, the sealing of the connection positions between the connecting main pipe 211 and the main pipe 3 and between the connecting branch pipe 212 and the air storage tank 11 can be tested, reducing the labor intensity during on-site installation.

[0056] Multiple gas storage unit groups 1 are spaced apart along the length of the main pipeline 3, and multiple gas outlet ports 2111 of the connecting pipe assemblies 2 are spaced apart along the length of the main pipeline 3. For example... Figure 2 In the illustrated embodiment, the main connecting pipe 211 is horizontally positioned and perpendicular to the main pipe 3, such that one end of the main connecting pipe 211 away from the main pipe 3 extends toward the side of the gas storage unit assembly 1, and the connecting branch pipe 212 connects the main connecting pipe 211 and the gas storage tank 11. This arrangement shortens the length of the main connecting pipe 211, thereby shortening the length of each connecting pipe assembly 2.

[0057] In one embodiment, the main pipeline 3 is segmented along its length, meaning the main pipeline 3 includes multiple main pipeline segments arranged sequentially along its length, and these multiple main pipeline segments are connected in series to form a pipeline that can be connected to all connecting pipe assemblies 21. The interfaces of the main pipeline 3 for connecting to the pipes 21 can be located between adjacent main pipeline segments. This reduces the number of pipe 21 interfaces on the main pipeline 3, thereby reducing the labor intensity of workers during installation.

[0058] The compressed air above-ground storage device also includes a drain pipe 81 and a drain control valve 82. The drain pipe 81 is detachably connected to a drain outlet 112, and the end of the drain pipe 81 away from the drain outlet 112 is inclined downwards. The drain control valve 82 is connected to the drain pipe 81 to control the opening and closing of the drain pipe 81. When the drain control valve 82 is opened, the liquid in the storage tank 11 can be smoothly discharged naturally from the drain pipe 81 to a set location, such as extending the end of the drain pipe 81 away from the storage tank 11 to a drainage ditch, so that sewage can be naturally discharged into the drainage ditch. When the drain control valve 82 is closed, compressed air can be stored inside the storage tank 11.

[0059] Preferably, the inclination angle of the drain pipe 81 is 1-10 degrees, preferably 2 degrees, so that the liquid drain pipe 81 in the gas storage tank 11 can be discharged naturally, and the space required by the drain pipe 81 in the height direction can be reduced, thereby reducing the height of the lower support frame 12. The inclination angle of the drain pipe 81 can be set according to the actual installation environment.

[0060] See Figure 5In one embodiment, multiple sewage pipes 81 are provided, each corresponding to one of the multiple gas storage unit groups 1. Each sewage pipe 81 includes a main sewage pipe 811 and branch sewage pipes 812. The number of branch sewage pipes 812 is equal to the number of gas storage tanks 11 in the corresponding gas storage unit group 1. Each branch sewage pipe 812 corresponds to and is connected to a gas storage tank 11. The end of each branch sewage pipe 812 away from the gas storage tank 11 is connected to the main sewage pipe 811. The main sewage pipe 811 extends to a designated sewage discharge point, allowing wastewater from the gas storage tanks 11 to converge into the main sewage pipe 811 via the branch sewage pipes 812 and be discharged to the designated sewage discharge point. A sewage control valve 82 is integrated into the main sewage pipe 811, allowing one sewage control valve 82 to control the discharge of wastewater from all gas storage tanks 11 in the same gas storage unit group 1, reducing the number of sewage control valves 82 required and thus lowering costs.

[0061] In this embodiment, the ends of the main sewage pipe 811 and the branch sewage pipe 812 furthest from the sewage outlet 112 are both inclined downwards, so that after the sewage control valve 82 is opened, the sewage in the gas storage tank 11 can pass through the branch sewage pipe 812 and the main sewage pipe 811 in sequence and be discharged. The main sewage pipe 811, the branch sewage pipe 812, and the sewage control valve 82 are integrated into a single independent component, which reduces the difficulty of on-site installation.

[0062] See Figure 2 In one embodiment, the number of drain pipes 81 is equal to the number of gas storage tanks 11, and each drain pipe 81 corresponds to one gas storage tank 11. The drain pipe 81 is detachably connected to a drain outlet 112, and the end of the drain pipe 81 away from the drain outlet 112 is inclined downwards. A drain control valve 82 is connected to the drain pipe 81 to control the opening and closing of the drain pipe 81. In this embodiment, each drain control valve 82 independently controls the discharge of wastewater from the single gas storage tank 11 connected to it.

[0063] In one embodiment, the compressed air above-ground storage device further includes a main drain pipe 83. The ends of all drain pipes 81 furthest from the storage tank 11 are detachably connected to the main drain pipe 83, so that the liquid from all the storage tanks 11 flows through the drain pipes 81 and converges into the main drain pipe 83 for centralized discharge. The inclination angle of the main drain pipe 83 is also set to 1-10 degrees to allow the liquid to drain naturally.

[0064] Preferably, the drain pipe 81 is connected to the gas storage tank 11 and the main drain pipe 83 via flanges, making the connection more convenient. It should be noted that the drain pipe 81 and the gas storage tank 11, and the drain pipe 81 and the main drain pipe 83 can also be connected by threads.

[0065] The compressed air above-ground storage device of this application includes a main pipeline 3, multiple storage unit groups 1, and multiple connecting pipe assemblies 2; the main pipeline 3, the multiple storage unit groups 1, and the multiple connecting pipe assemblies 2 are prefabricated as independent components. Each storage unit group 1 includes at least one storage tank 11, the axis of which extends horizontally and has a diameter of less than 3.5 meters. The pipes 21 of the connecting pipe assemblies 2 are detachably connected to the storage tank 11, allowing the storage tanks 11 to be centrally manufactured in the factory and transported to the installation site of the compressed air above-ground storage device via transportation equipment. This facilitates quality control of the storage tanks 11, improves safety, reduces labor costs associated with on-site welding, and minimizes time costs associated with preparation, construction, and inspection. It also avoids environmental pollution problems caused by on-site welding.

[0066] Moreover, when different gas storage requirements need to be met, the total gas storage capacity of the compressed air above-ground gas storage device can be adjusted by adjusting the number of gas storage unit group 1, without the need to set up a separate compressed air above-ground gas storage device, thus reducing costs and improving the applicability of the compressed air above-ground gas storage device.

[0067] Although the present invention has been described with reference to several typical embodiments, it should be understood that the terminology used is descriptive and exemplary, and not restrictive. Since the present invention can be embodied in many forms without departing from the spirit or essence of the invention, it should be understood that the above embodiments are not limited to any of the foregoing details, but should be interpreted broadly within the spirit and scope defined by the appended claims. Therefore, all variations and modifications falling within the scope of the claims or their equivalents should be covered by the appended claims.

Claims

1. A compressed air above-ground storage device, characterized in that, It includes multiple gas storage unit groups that are prefabricated as independent components, multiple connecting pipeline assemblies, and main pipelines; Each of the gas storage unit groups includes at least one gas storage tank; the axis of the gas storage tank extends horizontally, and the diameter of the gas storage tank is less than 3.5 meters; each gas storage tank is provided with an inlet and outlet. Multiple connecting pipe assemblies are provided in a one-to-one correspondence with multiple gas storage unit groups; each connecting pipe assembly includes a pipe and a shut-off valve, the pipe is provided with an air inlet and an air outlet, the number of air inlets of each connecting pipe assembly is adapted to the number of gas storage tanks of each gas storage unit group, and the air inlet corresponds one-to-one with the air inlet and outlet of the gas storage tank and is detachably connected, the shut-off valve is connected in series on the pipe to control the on / off between the air inlet and the air outlet; The air outlets of the plurality of the connecting pipe assemblies are all connected to the main pipeline, which is used to connect to an air compressor and a power generation unit.

2. The compressed air above-ground storage device according to claim 1, characterized in that, The pipeline includes a main connecting pipe and a branch connecting pipe. The main connecting pipe is provided with the air outlet, and the main connecting pipe is detachably connected to the main pipe through the air outlet. The number of connecting branch pipes is equal to the number of gas storage tanks in the same gas storage unit group. One end of the connecting branch pipe is connected to the connecting main pipe, and the other end is provided with the air inlet. The connecting branch pipe is detachably connected to the air inlet and outlet through the air inlet. The shut-off valve is installed on the main connecting pipe or the branch connecting pipe.

3. The compressed air above-ground storage device according to claim 2, characterized in that, Each of the aforementioned connecting pipe assemblies further includes a temperature sensor, a pressure sensor, and a safety relief valve, all of which are installed on the pipe between the shut-off valve and the inlet / outlet.

4. The compressed air above-ground storage device according to claim 3, characterized in that, The temperature sensor, the pressure sensor, and the safety relief valve are integrated into the main connection pipe.

5. The compressed air above-ground storage device according to claim 1, characterized in that, The main pipeline includes an air inlet and an air outlet. The air inlet is connected to an air inlet control valve and an air compressor. The air inlet control valve is located on the side of the air compressor closer to the air outlet. The air outlet is connected to an air outlet control valve and a power generation device. The air outlet control valve is located on the side of the power generation device closer to the air inlet. The outlet ports of multiple connecting pipe assemblies can be detachably connected between the inlet control valve and the outlet control valve.

6. The compressed air above-ground storage device according to claim 1, characterized in that, The axial length of the gas storage tank is less than 25 meters.

7. The compressed air above-ground storage device according to claim 1, characterized in that, Multiple gas storage unit groups are spaced apart along the length of the main pipeline, and multiple gas outlet ports of the connecting pipeline assemblies are spaced apart along the length of the main pipeline.

8. The compressed air above-ground storage device according to claim 7, characterized in that, Each of the gas storage unit groups includes multiple gas storage tanks that are separately arranged, and the multiple gas storage tanks are stacked vertically or arranged side by side in the horizontal direction.

9. The compressed air above-ground storage device according to claim 7, characterized in that, Each of the gas storage unit groups includes multiple gas storage tank groups spaced apart in the horizontal direction, and each gas storage tank group includes multiple separate gas storage tanks stacked vertically.

10. The compressed air above-ground storage device according to claim 1, characterized in that, Each of the aforementioned gas storage tanks is equipped with a drain port at the bottom; The compressed air above-ground storage device also includes a drain pipe and a drain control valve. The drain pipe is detachably connected to the drain outlet, and the end of the drain pipe away from the drain outlet is inclined downward. The drain control valve is connected to the drain pipe to control the opening and closing of the drain pipe.

Images