Compressed air energy storage multi-stage absorption energy conversion power generation device

Abstract

The invention relates to a compressed air energy storage multi-stage absorption energy conversion power generation device, relates to the technical field of power generation and energy storage, and is characterized in that after compressed air power generation, residual air flow potential energy and air pressure difference potential energy are used for driving a multi-stage wind wheel to generate middle connecting shaft rotation potential energy, and the rotation potential energy is stored and converted into electric energy, so that the energy conversion efficiency is improved; particularly, flow deflectors arranged on the inner wall of the tower are used for guiding the tower high-position pressure difference upward potential energy, meanwhile, residual air flow kinetic energy generated after compressed air power generation is guided to pass through multi-stage wind wheels on the inner wall of the tower and in the tower, and wind impellers are driven to absorb and utilize the pressure difference upward potential energy and the residual air flow kinetic energy for multiple times through vertical internal and external bidirectional stress on the top of the tower. The absorbed potential energy and kinetic energy drive the multi-stage wind wheel in the cylinder and the cylinder top to be subjected to vertical internal and external bidirectional stress to drive the wind impeller to rotate, the multi-stage wind wheel in the cylinder and the cylinder top are subjected to vertical internal and external bidirectional stress to drive the wind impeller to rotate to drive the middle connecting shaft to rotate, and the center shaft transmits the rotating potential energy to the low-speed generator set for electric energy output.

Description

Technical Field

[0001] The present invention relates to the field of power generation and energy storage technology, and in particular to a compressed air energy storage multi-stage absorption energy conversion power generation device. Background Art

[0002] my country has vigorously promoted the rapid development of clean energy, and various types of green energy have rapidly occupied the market. However, the carrying capacity of the power grid and the coordination of power consumption are difficult to synchronize. In order to optimize the power market, the country has followed up and introduced energy policies, and energy storage demand and power generation scientific research development have become the main market trends.

[0003] There are a hundred energy storage products in the market now, and they emerge in an endless stream. The mainstream series of livestock batteries have the upper hand, and there are also many others. Only time will prove it. Carbon dioxide energy storage is more scientific, but the unit is expensive, the equipment maintenance is too professional, and the life span is also obviously caused by mechanical wear and tear. The efficiency attenuation is obvious. Compressed air energy storage is simple and easy. With the continuous improvement of scientific and technological strength, compressed air energy storage will soar. The compressed air energy storage projects that are just beginning to emerge in the market are all direct drive and direct discharge modes, that is, the residual gas is directly discharged after the compressed air drives the generator set. The conversion efficiency is within 70%, the economic benefits are not significant, the energy storage investment is large, and the recycling rate is low. Compared with other energy storage, it has obvious advantages. Summary of the invention

[0004] In view of the deficiencies in the prior art, the present invention utilizes the flow potential energy of the residual air after compressed air power generation plus the potential energy of the air pressure difference to drive the multi-stage wind wheel to generate the rotational potential energy of the central connecting shaft, and converts the rotational potential energy storage into electrical energy, thereby improving the energy conversion efficiency and increasing the economic benefits. Specifically, the guide vanes arranged on the inner wall of the tower guide the upward potential energy of the high-position pressure difference of the tower, and at the same time guide the kinetic energy of the residual air after compressed air power generation through the inner wall of the tower and the multi-stage wind wheels in the tower, and the vertical inside and outside two-way force-driven wind impellers at the top of the tower to absorb and utilize the upward potential energy of the pressure difference and the kinetic energy of the residual air for multiple times. The absorbed potential energy and kinetic energy drive the multi-stage wind wheels in the cylinder and the vertical inside and outside two-way force-driven wind impellers at the top of the cylinder to rotate. The rotation of the multi-stage wind wheels in the cylinder and the vertical inside and outside two-way force-driven wind impellers at the top of the cylinder drives the central connecting shaft to rotate, and the central shaft transmits the rotational potential energy to the low-speed generator set for electrical energy output.

[0005] The technical solution of the present invention is: a compressed air energy storage multi-stage absorption energy conversion power generation device, including a compressed air energy storage generator set, a tower base, a tower, a guide vane, a multi-stage wind wheel in the tower, a vertical internal and external bidirectional force-driven wind impeller on the top of the tower, a magnetic suspension flange, and a central connecting shaft. The compressed air energy storage generator set is provided with an air storage tank, an energy expansion air storage tank, a steam turbine, a high-speed generator set, a low-speed generator set, an exhaust pipe, a high-speed generator control cabinet, a low-speed generator control cabinet, a compressor control cabinet, an air compressor, and an energy expansion air compressor. The energy expansion air compressor is connected to the energy expansion air storage tank, the air compressor is connected to the air storage tank, the air storage tank is connected to the energy expansion air storage tank, the air storage tank and the energy expansion air storage tank are combined and connected to the steam turbine, and the steam turbine is respectively connected to the high-speed generator set and the The low-speed generator set is connected, and the low-speed generator set is arranged at the center of the top of the tower base. The middle connecting shaft is connected and fixed to the central axis of the low-speed generator set. The middle connecting shaft passes through the center of the multi-stage wind wheel in the cylinder and the vertical internal and external bidirectional force-driven wind impeller on the top of the cylinder. An air inlet is arranged on the tower base, and a guide vane is arranged on the inner wall of the tower. The guide vane is C-shaped, and the two sides are multi-fold wavy. The guide vanes are fixed to the inner wall of the tower in a uniform circular array. The guide vanes of the circular array are vertically arrayed in sections on the inner wall of the tower according to the number of the multi-stage wind wheels in the cylinder. The multi-stage wind wheels in the cylinder are vertically arrayed on the middle connecting shaft of the tower. The vertical internal and external bidirectional force-driven wind impeller on the top of the cylinder is fixed to the top of the tower by the magnetic suspension flange. The steam turbine is provided with an exhaust pipe that passes above the top of the tower base.

[0006] Preferably, the air storage tank, expansion air storage tank, steam turbine, high-speed generator set, low-speed generator set, exhaust pipe, high-speed generator control cabinet, low-speed generator control cabinet, compressor control cabinet, air compressor, and expansion air compressor of the compressed air energy storage generator set are all set to appropriate sizes according to the power generation requirements of the implementation site.

[0007] Preferably, the present invention can design the tower height and the number of multi-stage wind wheels in the tower according to the airflow density of the geographical environment of the implementation site and the required power generation, and the tower height determines the airflow density and airflow speed in the tower.

[0008] Preferably, the vertical internal and external bidirectional force-driven wind impeller on the top of the cylinder selects a vertical internal and external bidirectional force-driven wind impeller with patent application numbers 2025101764720 and 2025202548404, and the blades of the vertical internal and external bidirectional force-driven wind impeller on the top of the cylinder are internal and external airflow driven blades, and the internal and external airflow driven blades are divided into a main force-bearing area, an inner auxiliary force-bearing area, and an outer auxiliary force-bearing area, and the internal and external airflow driven blades are provided with a series of screw mounting holes.

[0009] Preferably, the vertical internal and external bidirectional force-driven wind impeller at the top of the cylinder is connected and fixed to the top of the tower by a vertical axis wind turbine electromagnetic suspension flange with patent number 2023233767682.

[0010] Preferably, the circular array of guide vanes is segmented and vertically arranged in the tower, and its shape and folded wave shape can effectively guide and increase the efficiency of energy conversion by the multi-stage wind wheels in the tower and the vertical internal and external bidirectional force-driven wind impellers on the top of the tower.

[0011] The present invention can implement two power generation working modes, namely, a high-speed power generation mode and a low-speed power generation mode.

[0012] Beneficial effects of the present invention: 1. The present invention utilizes the residual flow potential energy of compressed air after power generation plus the air pressure difference potential energy to drive the multi-stage wind wheel to generate the central connecting shaft rotation potential energy, and converts the rotation potential energy into electrical energy, thereby improving the energy conversion efficiency and increasing the economic benefits.

[0013] 2. The multi-stage wind wheels in the cylinder absorb and convert potential energy in layers for multiple times, which effectively improves the energy conversion efficiency.

[0014] 3. The use of a vertical axis wind turbine electromagnetic suspension flange with patent number 2023233767682 improves the power generation stability of the utility model.

[0015] 4. The configuration of the vertical internal and external bidirectional force-driven wind impeller on the cylinder top of the present invention effectively improves the power generation efficiency.

[0016] 5. The arrangement of the guide vanes in the tower of the present invention can effectively assist energy conversion, making the invention more socially practical and popularizable. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 Shown is a schematic diagram of the three-dimensional structure of the compressed air energy storage multi-stage absorption energy conversion power generation device of the present invention.

[0018] Figure 2 Shown is a partial structural schematic diagram of a compressed air energy storage multi-stage absorption energy conversion power generation device of the present invention.

[0019] Figure 3 Shown is a schematic vertical cross-sectional view of a tower of a compressed air energy storage multi-stage absorption energy conversion power generation device according to the present invention.

[0020] Figure 4 Shown is a partial side view schematic diagram of the multi-stage wind wheel inside the tower of a compressed air energy storage multi-stage absorption energy conversion power generation device of the present invention.

[0021] Figure 5Shown is a schematic diagram of the three-dimensional structure of a multi-stage wind wheel in a cylinder of a compressed air energy storage multi-stage absorption energy conversion power generation device of the present invention.

[0022] Figure 6 Shown is a partial side view schematic diagram of the tower guide vane of a compressed air energy storage multi-stage absorption energy conversion power generation device of the present invention.

[0023] Figure 7 Shown is a schematic diagram of the combined structure of guide vanes in a tower of a compressed air energy storage multi-stage absorption energy conversion power generation device of the present invention.

[0024] Figure 8 Shown is a partially enlarged schematic diagram of the combined structure of guide vanes in the tower of a compressed air energy storage multi-stage absorption energy conversion power generation device of the present invention.

[0025] Fig. 9 Shown is a schematic diagram of the front view structure of a tower guide vane of a compressed air energy storage multi-stage absorption energy conversion power generation device of the present invention.

[0026] Fig.10 Shown is a schematic side view of a compressed air energy storage multi-stage absorption energy conversion power generation device of the present invention, with a wind impeller driven by vertical internal and external bidirectional forces on the top of the cylinder.

[0027] Fig.11 Shown is a top view structural schematic diagram of the vertical internal and external bidirectional force-driven wind blade of the invention.

[0028] Fig.12 Shown is a schematic diagram of the front view and wind direction of the internal and external airflow driven fan blades of the vertical internal and external bidirectional force-driven fan wheel of the present invention.

[0029] Fig.13 What is shown is a three-dimensional side schematic diagram of the internal and external airflow driven fan blades of the vertical internal and external bidirectional force-driven fan wheel of the present invention.

[0030] Fig.14 What is shown is a block diagram of the working principle of the present invention.

[0031] Explanation of the reference numerals: 1. tower base; 2. tower; 3. guide vane; 4. multi-stage wind wheel in the tower; 5. vertical internal and external bidirectional force-driven wind impeller at the top of the tower; 6. magnetic levitation flange; 7. middle connecting shaft; 8. gas storage tank; 9. capacity expansion gas storage tank; 10. steam turbine; 11. high-speed generator set; 12. low-speed generator set; 13. exhaust pipe; 14. high-speed generator control cabinet; 15. low-speed generator control cabinet; 16. compressor control cabinet; 17. air compressor; 18. capacity expansion air compressor; 19. air inlet; 51. internal and external airflow driving fan blades; 511. main force area; 512. internal auxiliary force area; 513. string screw mounting hole; 514. external auxiliary force area. DETAILED DESCRIPTION

[0032] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0033] See also Figure 1-12 The present invention provides an embodiment: a compressed air energy storage multi-stage absorption energy conversion power generation device, including a compressed air energy storage generator set, a tower base 1, a tower 2, a guide vane 3, a multi-stage wind wheel 4 in the tower, a vertical internal and external bidirectional force-driven wind impeller 5 at the top of the tower, a magnetic suspension flange 6, and a middle connecting shaft 7. The compressed air energy storage generator set is provided with an air storage tank 8, an energy expansion air storage tank 9, a steam turbine 10, a high-speed generator set 11, a low-speed generator set 12, an exhaust pipe 13, a high-speed generator control cabinet 14, a low-speed generator control cabinet 15, a compressor control cabinet 16, an air compressor 17, and an energy expansion air compressor 18. The energy expansion air compressor 18 is connected to the energy expansion air storage tank 9, the air compressor 17 is connected to the air storage tank 8, the air storage tank 8 is connected to the energy expansion air storage tank 9, the air storage tank 8 and the energy expansion air storage tank 9 are combined and connected to the steam turbine 10, and the steam turbine 10 is respectively connected to the high-speed generator The unit 11 is connected to the low-speed generator set 12, and the low-speed generator set 12 is arranged at the center of the top of the tower base 1. The middle connecting shaft 7 is connected and fixed to the central axis of the low-speed generator set 12. The middle connecting shaft 7 passes through the center of the multi-stage wind wheel 4 in the cylinder and the vertical internal and external bidirectional force-driven wind impeller 5 on the top of the cylinder. An air inlet 19 is arranged on the tower base 1, and a guide vane 3 is arranged on the inner wall of the tower 2. The guide vane 3 is C-shaped, and the two sides are multi-folded and wavy. The guide vanes 3 are fixed to the inner wall of the tower 2 in a uniform circular array. The guide vanes 3 of the circular array are vertically arrayed in sections on the inner wall of the tower 2 according to the number of the multi-stage wind wheels 4 in the cylinder. The multi-stage wind wheels 4 in the cylinder are vertically arrayed on the middle connecting shaft 7 of the tower 2. The vertical internal and external bidirectional force-driven wind impeller 5 on the top of the cylinder is fixed to the top of the tower 2 by the magnetic suspension flange 6. The steam turbine 10 is provided with an exhaust pipe 13 that passes above the top of the tower base 1.

[0034] See also Figure 1-12 In this embodiment, the compressed air energy storage generator set's air storage tank 8, expansion air storage tank 9, steam turbine 10, high-speed generator set 11, low-speed generator set 12, exhaust pipe 13, high-speed generator control cabinet 14, low-speed generator control cabinet 15, compressor control cabinet 16, air compressor 17, and expansion air compressor 18 are all set to appropriate sizes according to the power generation requirements of the implementation site.

[0035] The present invention can design the height of the tower 2 and the number of multi-stage wind wheels 4 in the tower according to the airflow density of the geographical environment of the implementation site and the required power generation. The height of the tower 2 determines the airflow density and airflow speed in the tower 2.

[0036] The vertical internal and external bidirectional force-driven wind impeller 5 at the top of the cylinder is selected from a patent application named "a vertical internal and external bidirectional force-driven wind impeller". The blades of the vertical internal and external bidirectional force-driven wind impeller 5 at the top of the cylinder are internal and external airflow driven blades 51. The internal and external airflow driven blades 51 are divided into a main force-bearing area 511, an internal auxiliary force-bearing area 512, and an external auxiliary force-bearing area 514. The internal and external airflow driven blades 51 are provided with a series of screw mounting holes 513.

[0037] The vertical internal and external bidirectional force-driven wind impeller 5 at the top of the cylinder is connected and fixed to the top of the tower 2 by a vertical axis wind turbine electromagnetic suspension flange 6 as claimed in the patent application.

[0038] The guide vanes 3 are arranged in a circular array in sections vertically in the tower, and their shape and folded wave shape can effectively guide and increase the efficiency of converting energy by the multi-stage wind wheels 4 in the tower and the wind impellers 6 driven by vertical internal and external bidirectional forces at the top of the tower.

[0039] The present invention can implement two power generation working modes, namely, a high-speed power generation mode and a low-speed power generation mode.

[0040] The working principle of the high-power power generation of the present invention is as follows: after closing the air inlet 19 on the tower base 1 and starting the air compressor 17 and the energy-expanding air compressor 18, the air compressor 17 and the energy-expanding air compressor 18 store gas in the gas storage tank 8 and the energy-expanding gas storage tank 9, and the gas power in the gas storage tank 8 and the energy-expanding gas storage tank 9 is transmitted to the steam turbine 10, and the steam turbine 10 drives the high-speed generator set 11 to generate electricity and output. At the same time, the residual gas power energy of the compressed air generated by the steam turbine 10 is discharged to the bottom of the tower 2 through the exhaust pipe 13, and the multi-stage wind wheel in the tower 2 4 gradually absorbs the energy of the remaining compressed air to rotate, and the remaining compressed air is discharged through the top-layer multi-stage wind wheel 4 and is absorbed and utilized by the wind impeller 5 driven by the vertical inside and outside bidirectional force at the top of the cylinder again. The airflow energy absorbed by the multi-stage wind wheel 4 in the cylinder is converted into rotational kinetic energy through rotation and then transmitted to the low-speed generator set 12 through the middle connecting shaft 7. Under the impetus of the high-speed airflow, the multi-stage wind wheel 4 in the cylinder obtains sufficient kinetic energy. When the set output power of the multi-stage wind wheel 4 in the cylinder is reached, the excess electric energy is returned to supplement the compressed air energy of the starting air compressor 17 and the capacity expansion air compressor 18, and such a cycle forms a stable energy chain.

[0041] The working principle of low-speed power generation of the present invention is as follows: the air inlet 19 on the tower base 1 is opened, and the upward airflow potential energy of the pressure difference generated by the tower 2 drives the multi-stage wind wheel 4 in the cylinder and the vertical internal and external bidirectional force-driven wind impeller 5 at the top of the cylinder to rotate step by step, and the multi-stage wind wheel 4 in the cylinder of the tower 2 absorbs the pressure difference potential energy step by step to rotate, and the pressure difference airflow potential energy absorbed by the multi-stage wind wheel 4 in the cylinder and the vertical internal and external bidirectional force-driven wind impeller 5 at the top of the cylinder is converted into rotational kinetic energy through rotation, and then transmitted to the low-speed generator set 12 through the middle connecting shaft 7 for daily electricity output.

[0042] The embodiments of the present invention are described in detail above with reference to the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge scope of those skilled in the art without departing from the spirit of the present invention.

Claims

1. A compressed air energy storage multi-stage absorption energy conversion power generation device, comprising a compressed air energy storage power generation unit, a tower base (1), a tower (2), a guide vane (3), a multi-stage wind wheel (4) in the tower, a vertical internal and external bidirectional force-driven wind impeller (5) at the top of the tower, a magnetic suspension flange (6), and a central connecting shaft (7), wherein: The compressed air energy storage generator set is provided with an air storage tank (8), an energy expansion air storage tank (9), a steam turbine (10), a high-speed generator set (11), a low-speed generator set (12), an exhaust pipe (13), a high-speed generator control cabinet (14), a low-speed generator control cabinet (15), a compressor control cabinet (16), an air compressor (17), and an energy expansion air compressor (18). The energy expansion air compressor (18) is connected to the energy expansion air storage tank (9), the air compressor (17) is connected to the air storage tank (8), the air storage tank (8) is connected to the energy expansion air storage tank (9), the air storage tank (8) and the energy expansion air storage tank (9) are combined and connected to the steam turbine (10), the steam turbine (10) is respectively connected to the high-speed generator set (11) and the low-speed generator set (12), the low-speed generator set (12) is arranged at the top center of the tower base (1), and the middle connecting shaft (7) is connected to the high-speed generator set (11) and the low-speed generator set (12). ) is connected and fixed to the central axis (7) of the low-speed generator set (12), the central connecting shaft (7) passes through the center of the multi-stage wind wheel (4) in the cylinder and the center of the wind impeller (5) driven by vertical internal and external bidirectional force at the top of the cylinder, an air inlet (19) is arranged on the tower base (1), and a guide vane (3) is arranged on the inner wall of the tower (2), the guide vane (3) is C-shaped, and both sides are multi-folded and wavy, and the guide vanes (3) are fixed to the inner wall of the tower (2) in a uniform circular array, The guide vanes (3) of the circular array are arranged vertically in sections on the inner wall of the tower (2) according to the number of the multi-stage wind wheels (4) in the cylinder; the multi-stage wind wheels (4) in the cylinder are arranged vertically on the connecting shaft (3) in the tower (2); the wind impeller (5) driven by the vertical internal and external bidirectional force at the top of the cylinder is fixed to the top of the tower (2) by the magnetic suspension flange (6); and the steam turbine (10) is provided with an exhaust pipe (13) connected to the top of the tower base (1).

2. The compressed air energy storage multi-stage absorption energy conversion power generation device according to claim 1 is characterized in that: The compressed air energy storage generator set has an air storage tank (8), an expansion air storage tank (9), a steam turbine (10), a high-speed generator set (11), a low-speed generator set (12), an exhaust pipe (13), a high-speed generator control cabinet (14), a low-speed generator control cabinet (15), a compressor control cabinet (16), an air compressor (17), and an expansion air compressor (18) all of which are configured to be appropriately sized according to the power generation demand of the implementation site.

Images