Air energy storage power generation system

Abstract

The invention discloses an air energy storage power generation system which achieves efficient compression, storage and conversion of air energy by optimizing the layout and structure of an air compressor, an air suction machine, an accelerator and a power generator. The system adopts double air compressors arranged left and right, is equipped with a large-capacity air tank and an air compression energy storage device, and internally integrates a piston and a piston ring, so that the energy storage efficiency is improved; the air suction machine and the exhaust valve are reasonably arranged, the airflow path is optimized, and the accelerator efficiently drives the generator to generate electricity through the transmission gear; in addition, the stability and reliability of the system are enhanced through a driving mechanism composed of the concave-convex downward pressing self-forming device, a gap bridge, a chain, a steel wire rope and the like and a booster on the periphery of the accelerator. According to the invention, the power generation efficiency is improved, the cost is reduced, the utilization of renewable energy sources is promoted, and remarkable economic and environment-friendly benefits are achieved.

Description

Technical Field

[0001] The present invention relates to the field of renewable energy and energy storage technology, and in particular to a system that utilizes air compression to store energy and realizes efficient power generation through optimized structural design. Background Art

[0002] With the continuous growth of global energy demand and the enhancement of environmental protection awareness, the development of clean and renewable energy has become a top priority. As a storage method with great potential, air energy storage technology 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 storage method that converts electrical energy into compressed air and stores it during the low load period of the power grid, and releases the compressed air during the peak load period of the power grid to drive steam turbine power generation. This technology has developed rapidly around the world in recent years, especially showing great potential in solving the imbalance of power system load and improving power supply quality.

[0004] CAES technology began to develop in the 1950s and gained attention in the 1990s as related technologies were gradually improved. Currently, many countries and regions in the world are actively researching and promoting this technology.

[0005] Countries such as Germany and the United States have built a number of large-scale CAES power plants, such as the Huntdorf CAES power plant in Germany and several CAES projects in the United States, demonstrating the feasibility and economy of the technology.

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

[0007] Problems:

[0008] 1. Low energy storage efficiency:

[0009] The energy conversion efficiency of compressed air energy storage is relatively low compared to electrochemical energy storage methods (such as lithium-ion batteries), at about 50%-70%, while the energy conversion efficiency of lithium-ion batteries is about 85%-95%. This limits the application of CAES in certain high-efficiency demand scenarios.

[0010] 2. Complex system:

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

[0012] 3. Higher cost:

[0013] Although the unit cost of CAES is relatively low, the construction and operation costs of the entire system are still high. Especially 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 China's compressed air energy storage system is relatively low, some projects are still in the demonstration stage and have not yet been put into large-scale commercial application, so there is still room for cost reduction.

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

[0016] To solve the above problems, the present invention provides an air energy storage and power generation system, which realizes efficient and stable air compression energy storage and power generation process by optimizing the layout and structure of key components such as air compressor, air intake machine, accelerator and generator.

[0017] To achieve the above object, the present invention provides the following technical solutions:

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

[0019] An air compression accumulator is arranged in the upper part of the air compressor, and a piston and a piston ring are arranged in the air compression accumulator; a plurality of sets of the air suction machines and corresponding air input pipes are arranged from top to bottom on the lower outer side of each of the air compressors, and an air intake valve is arranged on each of the air pipes; a plurality of sets of exhaust valves and corresponding exhaust pipes are arranged from top to bottom on the inner side of each of the air compressors and above the plurality of air suction machines; the accelerator is located between the two air compressors, and the exhaust pipes on both sides are arranged in an up-and-down staggered manner toward the accelerator, and the accelerator drives the generator to rotate and generate electricity through two mutually meshing transmission gears, and the generator is equipped with a power distribution room;

[0020] A concave-convex downward pressure maker and a bridge for supporting the concave-convex downward pressure maker are arranged on the plane of the piston cover of the air compressor. Chains are arranged at both ends of the bridge, which is driven by a rotating mechanism composed of gears and an electric motor and is assisted by a steel wire rope. A driving key is horizontally arranged on the concave-convex downward pressure maker.

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

[0022] Furthermore, a booster is arranged on the periphery of the accelerator.

[0023] Beneficial effects of the present invention:

[0024] 1. Efficient energy storage and power generation: By optimizing the layout and structure of the air compressor, air intake machine, accelerator and generator, the present invention realizes efficient compression, storage and conversion of air energy and improves power generation efficiency.

[0025] 2. Stable and reliable: The driving mechanism composed of the concave and convex downward pressure device, bridge, chain, wire rope, etc., as well as the application of the booster, enhances the stability and reliability of the system.

[0026] 3. Cost reduction: Reasonable system design and optimized component layout can help reduce manufacturing and maintenance costs and improve economic benefits.

[0027] 4. Environmental protection and energy saving: As one of the ways to utilize renewable energy, the present invention helps to reduce fossil energy consumption, lower carbon emissions and promote sustainable development. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a structural schematic diagram of the installation of a concave-convex downward pressure self-forming device in an air energy storage power generation system of the present invention;

[0029] Figure 2 This is a structural diagram of an air energy storage power generation system of the present invention. DETAILED DESCRIPTION

[0030] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings here can be arranged and designed in various different configurations.

[0031] In the description of the embodiments of the present invention, it should be noted that if the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. appear, the orientation or position relationship indicated is based on the orientation or position relationship shown in the drawings, or the orientation or position relationship in which the invented product is usually placed when used. It is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In addition, the terms "first", "second", "third", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0032] In addition, the terms "horizontal", "vertical", "overhanging" and the like do not mean that the components must be absolutely horizontal or overhanging, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0033] In the description of the embodiments of the present invention, "plurality" means at least 2.

[0034] In the description of the embodiments of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal connection of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0035] Example:

[0036] System composition:

[0037] The invention comprises two air compressors 10 which are arranged symmetrically on the left and right, a plurality of air intake machines 20 , an accelerator 30 and a generator 40 .

[0038] An air compression accumulator 11 is provided in the upper part of each air compressor 10, and a piston 12 and a piston ring are integrated inside. The piston ring is installed on the piston 12 to play a sealing role, and is used to efficiently compress and store air energy, and runs up and down in the large tank;

[0039] A plurality of air suction machines 20 and corresponding air input pipes 21 are installed at the lower outer side of the air compressor 10, and an air intake valve 22 is provided on the pipe to control air intake;

[0040] On the inner side of the air compressor 10, above the air intake machine 20, there are multiple sets of exhaust valves 13 and corresponding exhaust pipes 14, which are arranged in an up-and-down staggered arrangement, facing the accelerator 30, to optimize the airflow path;

[0041] The accelerator 30 is located between the two air compressors 10 and is driven by the compressed air received on both sides. Two mutually meshing transmission gears 31 are provided inside to drive the generator 40 to rotate and generate electricity. The generator 40 is equipped with a power distribution room 41 to realize the distribution and output of electric energy.

[0042] The piston cover of the air compressor 10 is designed with a concave-convex downward pressure device 50 that allows the piston to move up and down in the large tank. The concave and convex are installed in pairs, and the convex is stuck in the groove until the piston stops at the bottom stop point. The structure is supported by a bridge 60 to facilitate the passage of the concave-convex downward pressure device 50. Chains 61 are connected at both ends of the bridge 60 and are 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 and ensure efficient movement of the piston. A driving key 51, i.e., a gear driving point, is horizontally arranged on the concave-convex downward pressure device 50 to further improve movement efficiency.

[0043] To improve the energy storage capacity of the system, both air compressors 10 are equipped with large-capacity air tanks for storing more compressed air for long-term power supply (i.e., twenty-four-hour power generation);

[0044] A booster 32 is additionally provided on the periphery of the accelerator 30 to enhance the acceleration effect through an auxiliary power source, thereby improving the overall operating efficiency and stability of the system.

[0045] Air energy storage 24 hours working principle (such as Figure 1 , Figure 2 As shown, where A is the installation point of the concave-convex downward pressure device):

[0046] 1. Energy storage process

[0047] Air intake and compression:

[0048] Multiple air intake machines inhale outside air through air input pipes and enter the air compressor through the air intake valve;

[0049] The air compressor starts, and the piston and piston ring inside it reciprocate under the drive of the concave-convex pressure device to compress the inhaled air;

[0050] The compressed high-pressure air is stored in an air compression accumulator, which is usually designed as a container capable of withstanding high pressure, such as a large-capacity air tank.

[0051] 2. Energy storage:

[0052] During compression, the internal energy of the air increases, is converted into mechanical energy and stored in high-pressure air;

[0053] The stored high-pressure air is waiting to be released in the air compression accumulator.

[0054] 3. Power generation process

[0055] Air release and drive:

[0056] The high-pressure air stored in the air compression accumulator is released through the exhaust valve and exhaust pipe;

[0057] The released high-pressure air enters the accelerator in an alternating manner. There are two mutually meshing transmission gears inside the accelerator. The high-pressure air impacts the gears and drives them to rotate.

[0058] The accelerator is connected to the generator through a transmission mechanism (i.e., two mutually meshing transmission gears, with the transmission gear located on the outside being transmission-connected to the generator transmission shaft), and transmits the rotational mechanical energy to the generator.

[0059] 4. Electricity generation:

[0060] After receiving the rotating mechanical energy, the generator converts the mechanical energy into electrical energy through the internal electromagnetic induction principle;

[0061] The generated electric energy is distributed and output through the distribution room and supplied to the power grid or users, forming long-term power supply (i.e. 24-hour power generation).

[0062] 5. Assistance and optimization

[0063] Concave-convex downward pressure maker and bridge: The piston cover plane of the air compressor is equipped with a concave-convex downward pressure maker and a bridge structure, which is driven by a rotating mechanism composed of a chain, gears and an electric motor to improve the stability and efficiency of the piston movement. The concave-convex downward pressure maker is used to reduce the height and increase the gas volume;

[0064] Booster: A booster is installed outside the accelerator to enhance the driving ability of the accelerator through auxiliary mechanical force or fluid power, thereby improving the overall efficiency of the system.

[0065] At the same time, when the concave-convex pressure generator is pressed down, the piston moves downward (the exhaust pushes the generator to generate electricity), and when air is taken in, the piston moves upward, and the gas can push the piston upward. Pressing the piston downward ensures the stability of the gas and increases the pressure, which pushes the high-power generator to generate electricity, and also ensures the stability of the generator speed and voltage. The steel wire ropes on both sides (sides) of the concave-convex pressure generator are both auxiliary equipment and connecting equipment. When air is taken in, it is from the bottom or on the plane under the piston. The gas input by multiple sets of air suction machines slowly pushes the piston to the top dead center. When starting up, the steel wire ropes on both sides of the concave-convex pressure generator play an upward pulling role. There are four sets of concave-convex pressure generators, all of which are installed in the average position on the plane of the plug.

[0066] The present invention and its embodiments are described above, and such description is not restrictive. The drawings show only one embodiment of the present invention, and the actual structure is not limited thereto. In short, if ordinary technicians in the field are inspired by it, without departing from the purpose of the invention, they can design a structure and embodiment similar to the technical solution without creativity, which should belong to the protection scope of the present invention.

Claims

1. An air energy storage power generation system, Features: It includes two air compressors arranged on the left and right, multiple air intake machines, an accelerator and a generator; An air compression accumulator is arranged in the upper part of the air compressor, and a piston and a piston ring are arranged in the air compression accumulator; a plurality of sets of the air suction machines and corresponding air input pipes are arranged from top to bottom on the lower outer side of each of the air compressors, and an air intake valve is arranged on each of the air pipes; a plurality of sets of exhaust valves and corresponding exhaust pipes are arranged from top to bottom on the inner side of each of the air compressors and above the plurality of air suction machines; the accelerator is located between the two air compressors, and the exhaust pipes on both sides are arranged in an up-and-down staggered manner toward the accelerator, and the accelerator drives the generator to rotate and generate electricity through two mutually meshing transmission gears, and the generator is equipped with a power distribution room; A concave-convex downward pressure maker and a bridge for supporting the concave-convex downward pressure maker are arranged on the plane of the piston cover of the air compressor. Chains are arranged at both ends of the bridge, which is driven by a rotating mechanism composed of gears and an electric motor and is assisted by a steel wire rope. A driving key is horizontally arranged on the concave-convex downward pressure maker.

2. An air energy storage power generation system according to claim 1, Features: Both of the air compressors are provided with large capacity air tanks.

3. An air energy storage power generation system according to claim 1, Features: A booster is arranged on the periphery of the accelerator.

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