Air energy storage power generation system

Abstract

An air energy storage power generation system comprises two air compressors (10) placed at left and right, a plurality of air suction machines (20), an accelerator (30), and a generator (40); compressed air energy storage devices (11) are provided in the upper portions of the air compressors (10), and pistons (12) and piston rings are provided in the compressed air energy storage devices (11); the accelerator (30) is located in the middle of the two air compressors (10); the accelerator (30) drives the generator (40) to rotate by means of two mutually engaged transmission gears (31) to generate power; protruding-receding press-down auto-forming devices (50), and bridges arranged at intervals (60) for supporting the protruding-receding press-down auto-forming devices (50) are provided on a piston cover plane of the air compressors (10); chains (61) are arranged at two ends of the bridges (60); the chains (61) are driven by a rotating mechanism composed of a gear (62) and an electric motor (63), and are provided with steel wire ropes (70) for assistance; and drive keys (51) are horizontally arranged on the protruding-receding press-down auto-forming devices (50). The air energy storage power generation system not only improves power generation efficiency, but also reduces costs, promotes the utilization of renewable energy, and significantly benefits the economy and environmental protection.

Description

An air energy storage power generation system TECHNICAL FIELD

[0001] The present application relates to the field of renewable energy and energy storage technology, in particular to a system that utilizes air compression for energy storage and achieves efficient power generation through optimized structural design. BACKGROUND

[0002] With the increasing global energy demand and the growing awareness of environmental protection, developing clean and renewable energy has become a top priority. Air energy storage technology, as a promising energy storage method, has the advantages of abundant resources, environmental friendliness, and recycling.

[0003] Air energy storage power generation, also known as compressed air energy storage (CAES), is a method of converting electrical energy into compressed air during low-load periods and releasing compressed air to drive a turbine for power generation during peak-load periods. This technology has rapidly developed worldwide in recent years, particularly in addressing power system load imbalance and improving power quality.

[0004] CAES technology began to develop in the 1950s and gained attention in the 1990s with the gradual improvement of related technologies. Currently, multiple countries and regions worldwide are actively researching and promoting this technology.

[0005] Germany, the United States, and other countries have built several large CAES power plants, such as the Huntdorf CAES power plant in Germany and multiple CAES projects in the United States, demonstrating the feasibility and economic efficiency of this technology.

[0006] China is also actively promoting the development of compressed air energy storage technology, although the industry penetration rate is currently low. However, with technological progress and policy support, its application prospects are broad.

[0007] Problems:

[0008] 1. Low energy storage efficiency:

[0009] The energy conversion efficiency of compressed air energy storage is lower than that of electrochemical energy storage methods (such as lithium-ion batteries), approximately 50%-70%, while the energy conversion efficiency of lithium-ion batteries is approximately 85%-95%. This limits the application of CAES in certain high-efficiency scenarios.

[0010] 2. Complex system:

[0011] The CAES system includes complex equipment such as air compressors, electric motors / generators, underground gas storage chambers, heat exchangers, combustion chambers, gas turbines, and the like, and requires a special underground gas storage chamber, which has certain requirements for geological conditions. This increases the complexity and construction difficulty of the system.

[0012] 3. High cost:

[0013] Although the unit cost of CAES is relatively low, the construction and operation cost of the entire system is still high. In particular, in non-Chinese markets, the installation cost of long-term energy storage systems is generally high, which limits the widespread application of CAES technology.

[0014] In addition, although the cost of compressed air energy storage systems in China is relatively low, some projects are still in the demonstration stage and have not achieved large-scale commercial application, so there is still room for cost reduction.

[0015] Air energy storage power generation technology has great potential in solving load imbalance of power systems and improving power supply quality, but still needs to solve problems such as low energy storage efficiency, complex system, and high cost. Technical solutions

[0016] To solve the above problems, the present application provides an air energy storage power generation system, which optimizes the layout and structure of key components such as air compressors, air suction machines, accelerators and generators, to realize efficient and stable air compression energy storage and power generation process.

[0017] To achieve the above purpose, the present application provides the following technical solutions:

[0018] An air energy storage power generation system includes two air compressors arranged left and right, multiple sets of air suction machines, an accelerator, and a generator;

[0019] An air compression energy storage device is arranged in the upper part of the air compressor, and a piston and a piston ring are arranged in the air compression energy storage device. A plurality of sets of air suction machines and corresponding air input pipelines are arranged from top to bottom on the outer lower part of each air compressor, and air inlet valves are arranged on the air pipelines. A plurality of sets of exhaust valves and corresponding exhaust pipelines are arranged from top to bottom on the inner side of each air compressor above the plurality of sets of air suction machines. The accelerator is located in the middle of the two air compressors, and the exhaust pipelines on both sides are arranged in an up-down staggered manner towards the accelerator. The accelerator drives the generator to rotate and generate electricity through the two intermeshing transmission gears arranged therein. The generator is provided with a power distribution room.

[0020] The piston cover plane of the air compressor is provided with a concave-convex self-pressing device and a bridge for supporting the concave-convex self-pressing device, both ends of the bridge are provided with chains, a rotating mechanism composed of a gear and a motor drives the chains, and a steel wire rope is arranged to assist, and a driving key is horizontally arranged on the concave-convex self-pressing device.

[0021] Further, two air compressors are provided with large-capacity air tanks.

[0022] Further, the accelerator is provided with a booster. Advantages

[0023] 1. High-efficiency energy storage and power generation: By optimizing the layout and structure of the air compressor, air suction machine, accelerator and generator, the invention realizes efficient compression, storage and conversion of air energy, and improves the power generation efficiency.

[0024] 2. Stable and reliable: The driving mechanism composed of the concave-convex self-pressing device, bridge, chain, steel wire rope and booster enhances the stability and reliability of the system.

[0025] 3. Cost reduction: Reasonable system design and optimized component layout help reduce manufacturing and maintenance costs and improve economic benefits.

[0026] 4. Environmental protection and energy saving: As one of the renewable energy utilization methods, the invention helps reduce fossil energy consumption, reduce carbon emissions and promote sustainable development. BRIEF DESCRIPTION OF DRAWINGS

[0027] Figure 1 is a structure diagram of the installation of the concave-convex self-pressing device in the air energy storage and power generation system of the invention;

[0028] Figure 2 is a structure diagram of the air energy storage and power generation system of the invention. Embodiment of the invention

[0029] In order to make the purpose, technical scheme and advantages of the embodiments of the invention clearer, the technical scheme in the embodiments of the invention will be described clearly and completely below in combination with the drawings in the embodiments of the invention. Obviously, the described embodiments are part of the embodiments of the invention, not all the embodiments. The components of the embodiments of the invention described and shown in the drawings here can be arranged and designed in various different configurations.

[0030] In the description of the embodiments of the present application, it should be noted that if the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship when the product of the present application is usually placed, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application. In addition, the terms "first", "second", "third" and the like are only used to distinguish the description and cannot be understood as indicating or implying relative importance.

[0031] In addition, if the terms "horizontal", "vertical", "overhanging" and the like are used, they do not mean that the components must be absolutely horizontal or overhanging, but can be slightly inclined. For example, "horizontal" only means that it is more horizontal relative to "vertical", and does not mean that the structure must be completely horizontal, but can be slightly inclined.

[0032] In the description of the embodiments of the present application, "a plurality of" represents at least 2.

[0033] In the description of the embodiments of the present application, it should be noted that unless otherwise explicitly specified and limited, if the terms "arrangement", "installation", "connection", "connection" are used, they should be understood in a broad sense. For example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the communication between two elements inside. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances. Embodiments

[0034] System composition:

[0035] It includes two air compressors 10 arranged symmetrically left and right, a plurality of air suction machines 20, an accelerator 30 and a generator 40.

[0036] The upper part of each air compressor 10 is provided with an air compression energy accumulator 11, which is internally integrated with a piston 12 and a piston ring. The piston ring is installed on the piston 12 and plays a sealing role, which is used for efficient compression and storage of air energy, and runs up and down in a large tank;

[0037] A plurality of air suction machines 20 and corresponding air input pipes 21 are installed on the outer lower part of the air compressor 10. An air inlet valve 22 is provided on the pipe to control air suction.

[0038] The inner side of the air compressor 10, located above the air suction machine 20, is provided with multiple sets of exhaust valves 13 and corresponding exhaust pipes 14, which are arranged in an up-down staggered manner and face the accelerator 30, optimizing the airflow path.

[0039] The accelerator 30 is located between the two air compressors 10 and is driven by the compressed air received on both sides. Inside the accelerator 30, there are two intermeshing transmission gears 31 that drive the generator 40 to generate electricity. The generator 40 is equipped with a power distribution room 41 to realize the distribution and output of electrical energy.

[0040] The piston cover plane of the air compressor 10 is designed with a concave-convex down pressure self-creating device 50 that allows the piston to move up and down in the large tank. The concave-convex parts are matched, with the convex part being inserted into the concave groove until the piston reaches the lower dead center. This structure is supported by a bridge 60 to facilitate the passage of the concave-convex down pressure self-creating device 50. The ends of the bridge 60 are connected by a chain 61, which is driven by a rotating mechanism composed of a gear 62 and a motor 63. Steel wire ropes 70 are added on both sides to enhance stability, ensuring efficient movement of the piston. A drive key 51, i.e., a gear driving point, is horizontally arranged on the concave-convex down pressure self-creating device 50 to further improve the efficiency of movement.

[0041] To improve the energy storage capacity of the system, both air compressors 10 are equipped with large-capacity air tanks to store more compressed air for long-term power supply (i.e., twenty-four-hour power generation).

[0042] A booster 32 is added to the periphery of the accelerator 30 to enhance the acceleration effect through an auxiliary power source, improving the overall operation efficiency and stability of the system.

[0043] Twenty-four-hour working principle of air energy storage (as shown in Figures 1 and 2, where A is the installation point of the concave-convex down pressure self-creating device):

[0044] 1. Energy storage process

[0045] Air suction and compression:

[0046] Multiple air suction machines suck in external air through air input pipes and enter the air compressor through air inlet valves.

[0047] The air compressor starts, and the piston and piston ring inside the air compressor reciprocate under the drive of the concave-convex down pressure self-creating device, compressing the sucked air.

[0048] The compressed high-pressure air is stored in an air compression energy storage device, which is usually designed as a container capable of withstanding high pressure, such as a large-capacity air tank.

[0049] 2. Energy storage:

[0050] During the compression process, the internal energy of the air increases and is converted into mechanical energy and stored in the high-pressure air.

[0051] The stored high-pressure air waits to be released in the air compression energy accumulator.

[0052] 3. Power generation process

[0053] Air release and drive:

[0054] The high-pressure air stored in the air compression energy accumulator is released through the exhaust valve and exhaust pipe;

[0055] The released high-pressure air enters the accelerator in an up-and-down staggered manner, and the accelerator is internally provided with two intermeshing transmission gears. The high-pressure air impacts the gears and drives them to rotate;

[0056] The accelerator is connected to the generator through a transmission mechanism (i.e., two intermeshing transmission gears, with the transmission gear on the outside being in transmission connection with the generator transmission shaft) to transmit the rotating mechanical energy to the generator.

[0057] 4. Electric energy generation:

[0058] The generator, upon receiving the rotating mechanical energy, converts the mechanical energy into electric energy through the internal electromagnetic induction principle;

[0059] The generated electric energy is distributed and output through the power distribution room for supply to the power grid or users, forming long-term power supply (i.e., twenty-four-hour power generation).

[0060] 5. Assistance and optimization

[0061] Concave-convex self-forming device and bridge: The piston cover plane of the air compressor is provided with a concave-convex self-forming device and a bridge structure, which is driven by a rotating mechanism composed of a chain, a gear, and a motor to improve the stability and efficiency of piston movement. The concave-convex self-forming device is used to reduce height and increase gas volume;

[0062] Booster: A booster is provided on the periphery of the accelerator to enhance the driving capacity of the accelerator through auxiliary mechanical force or fluid power, improving the overall efficiency of the system.

[0063] At the same time, when the concave-convex self-forming device is pressed down, the piston goes down (exhaust gas drives the generator to generate electricity), and when air is admitted, the piston goes up. The gas can push the piston up. Pressing down the piston ensures stable gas and enhanced pressure, which drives the high-power generator to generate electricity and ensures stable generator revolutions and voltage. The steel wires on both sides of the concave-convex self-forming device are both auxiliary equipment and connecting equipment. When air is admitted, it is admitted from the bottom or the lower plane of the piston. The gas input by multiple sets of air suction machines slowly pushes the piston to the top dead center. When starting, the steel wires on both sides of the concave-convex self-forming device play a role in pulling up. There are four sets of concave-convex self-forming devices, all of which are installed at the average position of the piston upper plane.

[0064] The above describes the present application and its embodiments, which are not limited, and the drawings only show one of the embodiments of the present application, and the actual structure is not limited thereto. In general, if a person skilled in the art is inspired thereby, without departing from the purpose of the present application, without creative design, similar structure and embodiments of the technical solution are not creative, and should belong to the protection scope of the present application.

Claims

1. An air energy storage power generation system characterized in that: it comprises two air compressors arranged left and right, multiple sets of air suction machines, an accelerator and a generator; an air compression energy storage device is arranged in the upper part of the air compressor, and a piston and a piston ring are arranged in the air compression energy storage device; a plurality of sets of air suction machines and corresponding air input pipelines are arranged from top to bottom on the outer lower part of each air compressor, and air inlet valves are arranged on the air pipelines; a plurality of sets of air exhaust valves and corresponding air exhaust pipelines are arranged from top to bottom on the inner side of each air compressor and above the plurality of sets of air suction machines; the accelerator is located in the middle of the two air compressors, and the air exhaust pipelines on both sides are arranged in an up-and-down staggered manner towards the accelerator; the accelerator drives the generator to rotate and generate electricity through two intermeshing transmission gears arranged thereon, and the generator is provided with a power distribution room; a concave-convex self-pressing device is arranged on the flat surface of the piston cover of the air compressor, and a bridge is arranged at intervals to support the concave-convex self-pressing device; chains are arranged at both ends of the bridge, a rotating mechanism composed of a gear and a motor is arranged to drive the chains, and a steel wire rope is arranged to assist; a driving key is arranged horizontally on the concave-convex self-pressing device.

2. An air-based energy storage power generation system according to claim 1, wherein: The two air compressors are provided with large-capacity air tanks.

3. The compressed air energy storage power generation system of claim 1, wherein: A booster is arranged on the periphery of the accelerator.

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