Gas turbine integrated with compressed air energy storage unit and method of operation thereof

CN122467272BActive Publication Date: 2026-08-21NORTHEASTERN UNIV CHINA
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Patent Information

Application Number
CN202610956153.6
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2026-06-30
Publication Date
2026-08-21
Estimated Expiration
2046-06-30

AI Technical Summary

Technical Problem

[0005]鉴于现有技术的上述缺点、不足,本发明提供一种集成压缩空气储能单元的燃气轮机及其运行方法,其不仅解决了传统燃气轮机结构复杂、体积庞大,无法灵活部署等问题,还充分利用了工业富余的压缩空气

Benefits of technology

[0016]本发明的有益效果是:本发明的一种集成压缩空气储能单元的燃气轮机及其运行方法,通过改变了燃气轮机主体的结构,不包含压气机,以使结构简化,具有高机动性。由于取消了燃气轮机自带的压气机,整机轴向长度和重量显著减小,便于运输、安装和移动部署。还有能源利用灵活,即不仅可利用低谷电、弃风弃光电制备的压缩空气,还可直接利用工厂已有的高压气源,提高了能源综合利用效率。另外,省去了压气机加速过程,结合外部高压气源,可实现毫秒级至秒级的极速启动,特别适用于调峰和应急电源。同时还由于取消了复杂的压气机,整体的燃气轮机的维护工作量减少,可靠性提高,运行成本降低。

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Abstract

The application relates to the technical field of gas turbines, in particular to a gas turbine integrated with a compressed air energy storage unit and an operation method thereof, which comprises a gas source supply mechanism, a gas turbine main body and a heat energy supply mechanism. A gas outlet of the gas source supply mechanism is connected with a first gas inlet of the heat energy supply mechanism. The gas turbine main body is composed of a combustion chamber and a turbine, the heat energy supply mechanism can generate a heat source and heat high-pressure air to obtain high-temperature and high-pressure gas, a first gas outlet of the heat energy supply mechanism is connected with a gas inlet of the combustion chamber, a gas outlet of the combustion chamber is connected with a gas inlet of the turbine, a second gas outlet of the heat energy supply mechanism is directly connected with a second gas inlet of the turbine, and the high-temperature and high-pressure gas is selectively connected with the combustion chamber or the turbine. The body structure of the gas turbine is removed, the axial size and weight of the whole machine are greatly reduced, the structure is simplified, and transportation, installation and mobile deployment are facilitated.
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Description

Technical Field

[0001] This invention relates to the field of gas turbine technology, and in particular to a gas turbine with an integrated compressed air energy storage unit and its operation method. Background Technology

[0002] Gas turbines offer advantages such as high power density, rapid start-up, and low emissions, and are widely used in power generation, marine propulsion, and mechanical drives. A traditional gas turbine consists of three main components: a compressor, a combustion chamber, and a turbine. These three components are connected in series, with the compressor and turbine coaxially mounted. Because of this coaxial arrangement, a portion of the turbine's work directly drives the compressor to compress air and overcome compression losses; it cannot be output externally. This means the compressor consumes 50% to 70% of the turbine's output power to compress air. After deducting the surplus power used to drive the compressor, the remaining net output power used to drive external equipment such as generators, compressors, and ship propellers is limited, resulting in low energy utilization.

[0003] Currently, to meet the demands for rapid deployment and highly mobile power sources in emergency rescue and field operations, systems have been developed that couple compressed air energy storage with gas turbines. To ensure efficiency, the compressed air energy storage device is directly connected to the combustion chamber, using compressed air as an auxiliary gas source, while still retaining the compressor. Furthermore, current compressors are multi-stage guide vane axial flow compressors, with each stage consisting of a set of moving blades and a set of stationary blades. These multi-stage guide vanes are distributed along the compressor's axial direction, resulting in a large volume proportion. This not only leads to a complex and bulky overall structure but also necessitates fixed installation on infrastructure, making the entire device cumbersome.

[0004] On the other hand, the factory's air compressors continuously pump air. The compressed air is first stored in an air tank for buffering and pressure stabilization, and then used as the primary power source for workshop equipment. When the air compressor's production rate exceeds the air consumption of the workshop equipment, excess air is generated. Furthermore, due to pressure mismatches—such as inconsistencies between the gas pressure in the air tank and the pressure of the plant's compressed air network—the excess air cannot be directly connected to the network. Consequently, the energy of the excess compressed air is often not fully utilized and is directly discharged. Therefore, how to effectively recover and utilize this excess compressed air has become a critical issue that urgently needs to be addressed for industrial energy conservation and emission reduction. Summary of the Invention

[0005] In view of the above-mentioned shortcomings and deficiencies of the prior art, the present invention provides a gas turbine with an integrated compressed air energy storage unit and its operation method, which not only solves the problems of complex structure, large size and inflexible deployment of traditional gas turbines, but also makes full use of the surplus compressed air in industry.

[0006] To achieve the above objectives, the main technical solutions adopted by the present invention include: On one hand, embodiments of the present invention provide a gas turbine with an integrated compressed air energy storage unit, including an air source supply mechanism that uses the compressed air energy storage unit as an air source, a gas turbine body, and a heat energy supply mechanism; The air outlet of the air supply mechanism is connected to the first air inlet of the heat energy supply mechanism, and the air supply mechanism can adjust the air pressure of the high-pressure air in the compressed air energy storage unit. The gas turbine body consists of a combustion chamber and a turbine. The heat supply mechanism can generate a heat source and heat the high-pressure air to obtain high-temperature and high-pressure gas. The first outlet of the heat supply mechanism is connected to the inlet of the combustion chamber. The outlet of the combustion chamber is connected to the first inlet of the turbine. The second outlet of the heat supply mechanism is directly connected to the second inlet of the turbine. The high-temperature and high-pressure gas can be selectively connected to the combustion chamber or the turbine.

[0007] Optionally, the gas supply mechanism is a high-pressure gas storage tank; The outlet of the high-pressure gas storage tank is connected to the first inlet of the heat exchanger via a first connecting pipe, and the first connecting pipe is equipped with a pressure regulating meter and a pressure reducing valve.

[0008] Optionally, the gas supply mechanism is one or more combinations of a high-pressure gas storage tank, an underground gas storage cavern, or an industrial surplus compressed air pipeline network.

[0009] Optionally, the high-pressure gas storage tank is a composite material gas cylinder or a steel high-pressure tank.

[0010] Optionally, the heat supply mechanism includes a heat exchanger, a first selective connection pipeline, a second selective connection pipeline, a first solenoid valve, and a second solenoid valve. The heat exchanger has a first air outlet, a second air outlet, and a first air inlet; One end of the selective connection pipe is connected to the first air outlet, and the other end of the selective connection pipe is connected to the combustion chamber. The electromagnetic valve is installed on the selective connection pipe. One end of the second selective connecting pipe is connected to the second air outlet, and the other end of the second selective connecting pipe is connected to the second air inlet of the turbine. The second electromagnetic valve is installed on the second selective connecting pipe.

[0011] Optionally, the heat exchanger also has a flue gas inlet and a flue gas outlet, the flue gas inlet being connected to the turbine outlet via an inlet pipe, and the flue gas outlet being connected to the turbine outlet via an outlet pipe.

[0012] Optionally, the gas turbine body may also include a generator or mechanical output shaft coaxially connected to the turbine.

[0013] Optionally, the gas turbine body also includes an auxiliary power mechanism for supplying power to the lubricating oil pump and control system during the start-up phase.

[0014] Optionally, the turbine includes a single-stage or multi-stage turbine structure, the turbine structure including a plurality of stationary blades spaced circumferentially along the inner wall of the turbine structure, and the end of each stationary blade is provided with a nozzle ring.

[0015] On the other hand, a method for operating a gas turbine based on the aforementioned integrated compressed air energy storage unit includes the following steps: S1, Energy Release Preparation Stage: Start the auxiliary power mechanism to provide initial power to the gas turbine and start the lubricating oil pump. According to the turbine requirements, adjust the gas supply mechanism to provide high-pressure air with a set pressure and flow rate to the turbine of the gas turbine body. At the same time, start the heat supply mechanism to heat the high-pressure air to form high-temperature and high-pressure air. S2, Energy Release Operation Stage: The high-temperature and high-pressure air in S1 can be selectively introduced into the combustion chamber or the turbine. When the high-temperature and high-pressure air enters the combustion chamber, it mixes and burns with the fuel to form high-temperature and high-pressure gas, which in turn drives the turbine to rotate and drives the generator or load to work. When the high-temperature and high-pressure air directly enters the turbine, it drives the generator or load to work. S3. Operation monitoring and adjustment: Real-time monitoring of parameters, adjusting the working status of pressure regulating and metering components and pressure reducing valves on the first connecting pipeline of the combustion chamber and gas supply mechanism according to the operating conditions, to ensure that the gas turbine operates within a safe range.

[0016] The beneficial effects of this invention are as follows: This invention provides a gas turbine with an integrated compressed air energy storage unit and its operating method. By modifying the structure of the gas turbine body, eliminating the compressor, the structure is simplified, resulting in high mobility. Because the gas turbine's built-in compressor is eliminated, the overall axial length and weight are significantly reduced, facilitating transportation, installation, and mobile deployment. Furthermore, energy utilization is flexible; it can utilize compressed air generated from off-peak electricity, surplus wind and solar power, and also directly utilize existing high-pressure air sources in the plant, improving overall energy utilization efficiency. In addition, by eliminating the compressor acceleration process and combining it with an external high-pressure air source, millisecond- to second-level ultra-fast start-up can be achieved, making it particularly suitable for peak shaving and emergency power supply. Simultaneously, the elimination of the complex compressor reduces the overall maintenance workload of the gas turbine, improves reliability, and lowers operating costs.

[0017] Furthermore, the heated high-temperature and high-pressure air can be selectively introduced into the combustion chamber of the gas turbine through the heat supply mechanism to form high-temperature and high-pressure gas, which is then introduced into the turbine or directly introduced into the turbine, thus realizing multiple operating modes. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the gas turbine structure of the integrated compressed air energy storage unit of the present invention.

[0019] Explanation of reference numerals in the attached figures 1. Gas supply mechanism; 11. First connecting pipeline; 12. Pressure regulating and metering device; 13. Pressure reducing valve; 2. Gas turbine main body; 21. Combustion chamber; 22. Turbine; 221. Inlet 1; 222. Inlet 2; 23. Generator; 3. Heat supply mechanism; 31. First outlet; 32. Second outlet; 33. First inlet; 34. Heat exchanger; 35. Selective connecting pipeline 1; 36. Selective connecting pipeline 2; 37. Solenoid valve 1; 38. Solenoid valve 2; 39. Flue gas inlet; 310. Flue gas outlet; 311. Inlet pipeline; 312. Outlet pipeline. Detailed Implementation

[0020] To better explain and facilitate understanding of the present invention, the present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.

[0021] See Figure 1 As shown in the figure, an embodiment of the present invention proposes a gas turbine with an integrated compressed air energy storage unit, comprising a gas supply mechanism 1 that uses the compressed air energy storage unit as a gas source, a gas turbine body 2, and a heat supply mechanism 3. The outlet of the gas supply mechanism 1 is connected to the first inlet 33 of the heat supply mechanism 3, and the gas supply mechanism 1 can regulate the pressure of the high-pressure air in the compressed air energy storage unit. The gas turbine body 2 consists of a combustion chamber 21 and a turbine 22. The heat supply mechanism 3 can generate a heat source and heat the high-pressure air to obtain high-temperature and high-pressure gas. The first outlet 31 of the heat supply mechanism 3 is connected to the inlet of the combustion chamber 21, the outlet of the combustion chamber 21 is connected to the first inlet 221 of the turbine 22, and the second outlet 32 ​​of the heat supply mechanism 3 is directly connected to the second inlet 222 of the turbine 22. The high-temperature and high-pressure gas can be selectively connected to either the combustion chamber 21 or the turbine 22.

[0022] Furthermore, the gas supply mechanism 1 is a high-pressure gas storage tank. The outlet of the high-pressure gas storage tank is connected to the first inlet 33 of the heat energy supply mechanism 3 through the first connecting pipe 11, and the first connecting pipe 11 is equipped with a pressure regulating meter 12 and a pressure reducing valve 13.

[0023] Furthermore, the gas supply mechanism 1 is one or more combinations of high-pressure gas storage tanks, underground gas storage caverns, or industrial surplus compressed air pipelines.

[0024] Furthermore, the high-pressure gas storage tank uses composite material gas cylinders or steel high-pressure tanks.

[0025] Furthermore, the heat supply mechanism 3 includes a heat exchanger 34, a first selective connection pipe 35, a second selective connection pipe 36, a first solenoid valve 37, and a second solenoid valve 38. The heat exchanger 34 has a first outlet 31, a second outlet 32, and a first inlet 33. One end of the first selective connection pipe 35 is connected to the first outlet 31, and the other end is connected to the combustion chamber 21. A first solenoid valve 37 is installed on the first selective connection pipe 35. One end of the second selective connection pipe 36 is connected to the second outlet 32, and the other end is connected to the second inlet 222 of the turbine 22. A second solenoid valve 38 is installed on the second selective connection pipe 36. Either the first solenoid valve 37 or the second solenoid valve 38 can be opened as needed, or both can be opened simultaneously.

[0026] Furthermore, the heat exchanger 34 also has a flue gas inlet 39 and a flue gas outlet 310. The flue gas inlet 39 is connected to the outlet of the turbine 22 through an inlet pipe 311, and the flue gas outlet 310 is connected to the outlet of the turbine 22 through an outlet pipe 312.

[0027] Furthermore, the gas turbine body 2 also includes a generator 23 or a mechanical output shaft coaxially connected to the turbine 22.

[0028] Furthermore, the gas turbine main body 2 also includes an auxiliary power mechanism, which supplies power to the lubricating oil pump and control system during the start-up phase. The lubricating oil pump delivers lubricating oil to bearings, gears, and other components, forming an oil film that reduces friction and provides cooling.

[0029] Furthermore, high mobility means easy deployment, small size, light weight, and convenient relocation. It also includes a mobile base, on which the gas turbine body 2, gas supply mechanism 1, and heat supply mechanism 3 are all integrated, forming a vehicle-mounted or containerized mobile power station.

[0030] Furthermore, the turbine 22 includes a single-stage or multi-stage turbine structure, which includes multiple stator blades spaced circumferentially along the inner wall of the turbine structure, with nozzle rings at the ends of the stator blades. It should also be noted that the radial direction of the stator blades is adjustable, and the size and direction of the nozzle openings are also adjustable; this is prior art and will not be elaborated upon further here.

[0031] An operation method for a gas turbine based on an integrated compressed air energy storage unit, the method comprising the following steps: S1, Energy Release Preparation Stage: Start the auxiliary power mechanism to provide initial power to the gas turbine and start the lubricating oil pump. According to the needs of turbine 22, adjust the gas supply mechanism 1 to provide high-pressure air with a set pressure and flow rate to turbine 22 of the gas turbine body 2. At the same time, start the heat supply mechanism 3 to heat the high-pressure air to form high-temperature and high-pressure air.

[0032] S2, Energy Release Operation Stage: The high-temperature and high-pressure air in S1 can be selectively introduced into the combustion chamber 21 or the turbine 22. When the high-temperature and high-pressure air enters the combustion chamber 21, it mixes and burns with the fuel to form high-temperature and high-pressure gas, which in turn drives the turbine 22 to rotate and drives the generator 23 or the load to work. When the high-temperature and high-pressure air directly enters the turbine 22, it drives the generator 23 or the load to work.

[0033] S3. Operation monitoring and adjustment: Real-time monitoring of parameters, adjusting the working status of pressure regulating metering element 12 and pressure reducing valve 13 on the first connecting pipeline 11 of combustion chamber 21 and gas supply mechanism 1 according to operating conditions, to ensure that the gas turbine operates within a safe range.

[0034] Example 1 The operating mode of Example 1 is the gas-assisted combustion mode, which is to mix fuel into high-pressure air for combustion to increase power output.

[0035] The working process of this gas engine is as follows: Energy release preparation stage: First, the auxiliary power unit is started to provide initial power to the lubrication oil pump and control circuit of the entire gas engine. The main shut-off valve is opened, and compressed air from the gas supply unit 1 enters the first connecting pipe 11. The gas pressure is adjusted to 1.5MPa-2.0MPa by the pressure regulating meter 12, and the flow rate is monitored by the flow meter. At the same time, the heat exchanger 34 in the heat energy supply unit is started. Since the turbine 22 has not yet rotated, the heat exchanger 34 is preheated using an electric heater or ignition tube.

[0036] Energy release operation phase: High-pressure air, after depressurization, enters heat exchanger 34 and is heated to 350℃-450℃ by exhaust gas from turbine 22. The heated high-temperature, high-pressure air is injected into combustion chamber 21. At this time, the fuel regulating device is activated, injecting an appropriate amount of natural gas fuel into combustion chamber 21. The igniter ignites the fuel, and the fuel combustion releases heat to form high-temperature, high-pressure gas. The high-temperature, high-pressure gas impacts the moving blades of turbine 22, driving the turbine rotor to rotate at high speed, which in turn drives generator 23 to generate AC power that meets the requirements.

[0037] Operation monitoring and regulation: The control system monitors the turbine speed, exhaust temperature, power generation, and gas tank pressure in real time to ensure efficient operation within safe limits. It also adjusts the high-pressure air release flow and fuel supply according to load power requirements to achieve constant or variable power output.

[0038] Example 2 This embodiment has a basically the same structure as Embodiment 1, the difference being in the operating mode. This embodiment is applied to scenarios with no fuel or extremely high environmental requirements, and adopts a pure compressed air power mode.

[0039] The working process of this gas engine is as follows: Energy release preparation stage: Start the auxiliary power mechanism, open the main shut-off valve, and the compressed air in the air supply mechanism 1 enters the first connecting pipeline 11. Adjust the air pressure to 1.5-2.0MPa through the pressure regulating meter 12. At the same time, start the heat exchanger 34 in the heat energy supply unit. Since the turbine 22 has not yet rotated, the heat exchanger 34 is preheated using an electric heater or ignition tube.

[0040] During the energy release operation phase: the high-pressure air, after being depressurized and heated, does not enter the combustion chamber 21 for combustion, but instead directly enters the turbine 22 for expansion and work. Due to the lack of a combustion heating stage, the air temperature is relatively low. Therefore, the turbine 22 adopts an axial flow design with adjustable stator vanes to adapt to high-flow-rate, variable-parameter intake conditions. The high-pressure air expands and cools in the turbine 22, and the output shaft power drives the generator 23 to generate electricity.

[0041] Operation monitoring and adjustment: The inlet temperature and expansion ratio of turbine 22 are closely monitored. By adjusting the intake airflow and stator blade angle, the turbine 22 speed is maintained constant, ensuring stable power output of generator 23. In this mode, the system has zero emissions, making it particularly suitable for locations with high air quality requirements, such as mines and tunnels.

[0042] Example 3 This embodiment has a basically the same structure as Embodiment 1, the difference being in the operating mode. This embodiment adopts a hybrid power mode operation.

[0043] The device operates as follows: Energy release preparation stage: Start the auxiliary power mechanism, open the main shut-off valve, and the compressed air in the air supply mechanism 1 enters the first connecting pipeline 11. Adjust the air pressure to 1.5MPa-2.0MPa through the pressure regulating meter 12. At the same time, start the heat exchanger 34 in the heat energy supply unit. Since the turbine 22 has not yet rotated, the heat exchanger 34 is preheated using an electric heater or ignition tube.

[0044] During the energy release operation phase: After being depressurized and heated, part of the compressed air enters the combustion chamber 21 to mix with the fuel and burn, forming the first high-temperature gas that drives the turbine 22; the other part of the compressed air directly enters the turbine 22 to expand and do work. At the same time, the blade temperature and output torque of the turbine 22 are controlled by adjusting the flow rate.

[0045] This mode not only allows for flexible adjustment of output power, but also significantly reduces CO2 and NO emissions. X The emission of harmful gases.

[0046] Operation monitoring and adjustment: The system dynamically adjusts the ratio of "combustion air" to "bypass air" according to power demand. During off-peak periods, the fuel valve is closed, and the system operates using only compressed air expansion to achieve zero fuel consumption standby; during peak periods, the fuel valve is fully opened to reach rated power.

[0047] In the description of this invention, it should be understood that 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 indicated technical features. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0048] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0049] In the description of this specification, the terms "one embodiment," "some embodiments," "embodiment," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0050] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make modifications, alterations, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A gas turbine with an integrated compressed air energy storage unit, characterized in that: It includes an air supply mechanism (1) that uses compressed air energy storage unit as air source, a gas turbine body (2) and a heat supply mechanism (3). The outlet of the gas supply mechanism (1) is connected to the first inlet (33) of the heat supply mechanism (3), and the gas supply mechanism (1) can adjust the pressure of the high-pressure air in the compressed air energy storage unit. The gas turbine body (2) consists of a combustion chamber (21) and a turbine (22). The heat supply mechanism (3) can generate a heat source and heat the high-pressure air to obtain high-temperature and high-pressure gas. The first outlet (31) of the heat supply mechanism (3) is connected to the inlet of the combustion chamber (21). The outlet of the combustion chamber (21) is connected to the first inlet (221) of the turbine (22). The second outlet (32) of the heat supply mechanism (3) is directly connected to the second inlet (222) of the turbine (22). The high-temperature and high-pressure gas can be selectively connected to the combustion chamber (21) or the turbine (22).

2. The gas turbine with an integrated compressed air energy storage unit as claimed in claim 1, characterized in that: The gas supply mechanism (1) is a high-pressure gas storage tank; The outlet of the high-pressure gas storage tank is connected to the first inlet (33) of the heat supply mechanism (3) through the first connecting pipe (11). The first connecting pipe (11) is equipped with a pressure regulating meter (12) and a pressure reducing valve (13).

3. The gas turbine with an integrated compressed air energy storage unit as described in claim 1, characterized in that: The gas supply mechanism (1) is one or more of the following: high-pressure gas storage tank, underground gas storage cavern, or industrial surplus compressed air pipeline network.

4. The gas turbine with an integrated compressed air energy storage unit as described in claim 3, characterized in that: The high-pressure gas storage tank is made of composite material or steel.

5. The gas turbine with an integrated compressed air energy storage unit as described in claim 4, characterized in that: The heat supply mechanism (3) includes a heat exchanger (34), a first selective connection pipe (35), a second selective connection pipe (36), a first electromagnetic valve (37), and a second electromagnetic valve (38). The heat exchanger (34) has a first air outlet (31), a second air outlet (32) and a first air inlet (33). One end of the selective connection pipe (35) is connected to the first air outlet (31), and the other end of the selective connection pipe (35) is connected to the combustion chamber (21). The electromagnetic valve (37) is installed on the selective connection pipe (35). One end of the second selective connecting pipe (36) is connected to the second air outlet (32), and the other end of the second selective connecting pipe (36) is connected to the second air inlet (222) of the turbine (22). The second electromagnetic valve (38) is installed on the second selective connecting pipe (36).

6. The gas turbine with an integrated compressed air energy storage unit as described in claim 5, characterized in that: The heat exchanger (34) also has a flue gas inlet (39) and a flue gas outlet (310). The outlet of the turbine (22) is connected to the flue gas inlet (39) through an inlet pipe (311), and the flue gas outlet (310) is connected to the outlet of the turbine (22) through an outlet pipe (312).

7. The gas turbine with an integrated compressed air energy storage unit as claimed in claim 1, characterized in that: The gas turbine body (2) also includes a generator (23) or mechanical output shaft coaxially connected to the turbine (22).

8. The gas turbine with an integrated compressed air energy storage unit as described in claim 7, characterized in that: The gas turbine body (2) also includes an auxiliary power mechanism, which is used to supply power to the lubricating oil pump and control system during the start-up phase.

9. The gas turbine with an integrated compressed air energy storage unit as claimed in claim 1, characterized in that: The turbine (22) includes a single-stage or multi-stage turbine structure, the turbine structure including a plurality of stationary blades spaced circumferentially along the inner wall of the turbine structure, and the end of the stationary blades is provided with a nozzle ring.

10. A method for operating a gas turbine based on an integrated compressed air energy storage unit according to any one of claims 1-9, the method comprising the following steps: S1, Energy release preparation stage: Start the auxiliary power mechanism to provide initial power to the gas turbine and start the lubricating oil pump. According to the turbine (22) requirements, adjust the gas supply mechanism (1) to provide high-pressure air with a set pressure and flow rate to the turbine (22) of the gas turbine body (2). At the same time, start the heat supply mechanism (3) to heat the high-pressure air to form high-temperature high-pressure air. S2, Energy Release Operation Stage: The high-temperature and high-pressure air in S1 can be selectively introduced into the combustion chamber (21) or the turbine (22). When the high-temperature and high-pressure air enters the combustion chamber (21), it mixes and burns with the fuel to form high-temperature and high-pressure gas, which in turn drives the turbine (22) to rotate and drives the generator (23) or the load to work. When the high-temperature and high-pressure air directly enters the turbine (22), it drives the generator (23) or the load to work. S3. Operation monitoring and adjustment: Real-time monitoring of parameters, adjusting the working status of pressure regulating meter (12) and pressure reducing valve (13) on the first connecting pipeline (11) of the combustion chamber (21) and gas supply mechanism (1) according to the working conditions, to ensure that the gas turbine operates within a safe range.

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