Hydrogen fuel gas turbine system

Abstract

The invention provides a hydrogen fuel gas turbine system which comprises a hydrogen supply pipeline, a gas supply pipeline, a gas turbine subsystem, a first heat regenerator, an organic Rankine cycle subsystem and a heat exchanger. The air supply pipeline provides air for the gas turbine subsystem; in the first heat regenerator, tail gas exhausted by the gas turbine subsystem can heat hydrogen in the hydrogen supply pipeline and air in the air supply pipeline; an organic working medium flows in the organic Rankine cycle subsystem; in the heat exchanger, tail gas exhausted by the gas turbine subsystem can heat an organic working medium in the organic Rankine cycle subsystem. The hydrogen fuel gas turbine system provided by the embodiment of the invention has the advantages of high tail gas waste heat utilization efficiency and the like.

Description

Technical Field

[0001] The present invention relates to the technical field of gas turbines, and particularly to a hydrogen fuel gas turbine system. Background Art

[0002] A gas turbine is a device that converts the thermal energy generated by the combustion of a fuel (such as natural gas, hydrogen, etc.) mixed with air into mechanical energy. It mainly consists of three major parts: a compressor, a combustion chamber, and a turbine. During operation, the compressor inhales and compresses the outside air, and then sends the high-pressure air into the combustion chamber, where it mixes with the injected fuel and burns to produce high-temperature and high-pressure gases. These gases then drive the turbine to rotate. The turbine is connected to the compressor through a shaft and can drive a generator or other mechanical equipment to generate electrical energy or mechanical work.

[0003] In the related art, the recovery of waste heat from the exhaust gas of a gas turbine system mainly relies on adding additional heat exchange equipment or adopting more complex thermal management strategies. Although these methods provide a certain degree of help, there are still problems of insufficient heat recovery and low waste heat utilization efficiency. Summary of the Invention

[0004] The present invention provides a hydrogen fuel gas turbine system to solve the defect of low waste heat utilization efficiency of the exhaust gas in the existing gas turbine system and achieve efficient utilization of the waste heat of the exhaust gas.

[0005] The present invention provides a hydrogen fuel gas turbine system, including: A hydrogen supply pipeline and an air supply pipeline; A gas turbine subsystem, the hydrogen supply pipeline supplies hydrogen to the gas turbine subsystem, and the air supply pipeline supplies air to the gas turbine subsystem; A first recuperator, in the first recuperator, the exhaust gas discharged from the gas turbine subsystem can heat the hydrogen in the hydrogen supply pipeline and the air in the air supply pipeline; An organic Rankine cycle subsystem, with an organic working fluid flowing in the organic Rankine cycle subsystem; A heat exchanger, in the heat exchanger, the exhaust gas discharged from the gas turbine subsystem can heat the organic working fluid in the organic Rankine cycle subsystem.

[0006] In some embodiments, the gas turbine subsystem includes a first exhaust pipe and a second exhaust pipe. The second exhaust pipe is communicated with the first exhaust pipe and is arranged downstream of the first exhaust pipe. The first exhaust pipe, the first recuperator, the second exhaust pipe, and the heat exchanger are sequentially communicated.

[0007] In some embodiments, the gas turbine subsystem includes a compressor, a combustion chamber, and a turbine that are connected in sequence. The hydrogen supply pipeline is connected to the combustion chamber. The gas supply pipeline includes a first pipe and a second pipe. The first pipe is used to connect the gas source and the compressor, and the second pipeline is used to connect the compressor and the combustion chamber.

[0008] In some embodiments, the first recuperator is provided with a first heat exchange pipe, a second heat exchange pipe, and a third heat exchange pipe that are independent of each other and capable of heat exchange. The second heat exchange pipe is arranged between the first heat exchange pipe and the third heat exchange pipe. The hydrogen supply pipeline is connected to the first heat exchange pipe, the first tail gas pipe is connected to the second heat exchange pipe, and the second pipe is connected to the third heat exchange pipe.

[0009] In some embodiments, the heat exchanger is provided with a fourth heat exchange pipe and a fifth heat exchange pipe that are independent of each other and capable of heat exchange. The organic Rankine cycle subsystem is provided with a third pipe. The second tail gas pipe is connected to the fourth heat exchange pipe, and the third pipe is connected to the fifth heat exchange pipe.

[0010] In some embodiments, the organic Rankine cycle subsystem includes an expander, a condenser, a liquid storage tank, and a working fluid pump that are connected in sequence through a fourth pipe. One end of the third pipe is connected to the output end of the working fluid pump, and the other end of the third pipe is connected to the input end of the expander.

[0011] In some embodiments, the organic Rankine cycle subsystem includes a second recuperator. The second recuperator is arranged between the output end of the expander and the condenser. The second recuperator includes a sixth heat exchange pipe and a seventh heat exchange pipe that are independent of each other and capable of heat exchange. The third pipe is connected to the sixth heat exchange pipe, and the fourth pipe is connected to the seventh heat exchange pipe.

[0012] In some embodiments, the heat exchanger is arranged between the output end of the sixth heat exchange pipe and the input end of the expander. The third pipe is connected to the heat exchanger after passing through the second recuperator.

[0013] In some embodiments, the hydrogen fuel gas turbine system includes a first generator and a storage battery. The first generator is electrically connected to the storage battery, and the organic Rankine cycle subsystem can drive the first generator to generate electricity.

[0014] In some embodiments, the hydrogen fuel gas turbine system includes a second generator. The second generator is connected to the compressor to supply energy to the compressor; and / or, the second generator is electrically connected to the storage battery.

[0015] In the hydrogen fuel gas turbine system according to the embodiment of the present invention, the waste heat of the exhaust gas is first recovered and utilized in the first recuperator, and the waste heat of the exhaust gas is secondarily recovered and utilized in the heat exchanger. Through the two efficient utilizations of the waste heat of the exhaust gas, not only the utilization efficiency of the waste heat of the exhaust gas is improved, but also the operating efficiency of the gas turbine subsystem and the organic Rankine cycle subsystem is enhanced.

[0016] Therefore, the hydrogen fuel gas turbine system according to the embodiment of the present invention has advantages such as high utilization efficiency of waste heat of the exhaust gas. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0018] Figure 1 It is a schematic diagram of the hydrogen fuel gas turbine system provided by the present invention.

[0019] Reference Numerals: 100, hydrogen fuel gas turbine system; 1, gas turbine subsystem; 11, first exhaust pipe; 12, second exhaust pipe; 13, compressor; 14, combustion chamber; 15, turbine; 2, organic Rankine cycle subsystem; 20, third pipe; 21, expander; 22, condenser; 23, liquid storage tank; 24, working fluid pump; 25, second recuperator; 26, fourth pipe; 3, first recuperator; 4, heat exchanger; 5, hydrogen supply pipeline; 6, gas supply pipeline; 61, first pipe; 62, second pipe; 7, first generator; 8, second generator; 9, storage battery. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0020] In order to make the objectives, technical solutions and advantages of the present invention clearer, the following will clearly and completely describe the technical solutions in the present invention in conjunction with the drawings in the present invention. Obviously, the described embodiments are some, but not all, of the embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art without creative efforts based on the embodiments in the present invention belong to the scope of protection of the present invention.

[0021] As Figure 1 shown, the hydrogen fuel gas turbine system 100 according to the embodiment of the present invention includes a hydrogen supply pipeline 5, a gas supply pipeline 6, a gas turbine subsystem 1, a first recuperator 3, an organic Rankine cycle subsystem 2, and a heat exchanger 4.

[0022] The hydrogen supply pipeline 5 supplies hydrogen to the gas turbine subsystem 1, and the air supply pipeline 6 supplies air to the gas turbine subsystem 1.

[0023] In the first recuperator 3, the exhaust gas discharged from the gas turbine subsystem 1 can heat the hydrogen in the hydrogen supply pipeline 5 and the air in the air supply pipeline 6.

[0024] There is an organic working fluid flowing in the organic Rankine cycle subsystem 2.

[0025] In the heat exchanger 4, the exhaust gas discharged from the gas turbine subsystem 1 can heat the organic working fluid in the organic Rankine cycle subsystem 2.

[0026] For example, the hydrogen fuel in the hydrogen storage tank flows through the hydrogen supply pipeline 5 to the gas turbine subsystem 1, and the air supply pipeline 6 supplies air to the gas turbine subsystem 1, ensuring a stable supply of fuel and oxidant; In the first recuperator 3, the exhaust gas discharged from the gas turbine subsystem 1 is used to heat the hydrogen in the hydrogen supply pipeline 5 and the air in the air supply pipeline 6. For example, the liquid hydrogen is heated into gaseous hydrogen, and the low-temperature air is heated into high-temperature air. In this way, the gas temperature before entering the combustion process is increased, thereby improving the combustion efficiency of the entire gas turbine subsystem 1.

[0027] At the same time, there is an organic working fluid flowing in the organic Rankine cycle subsystem 2. In the heat exchanger 4, the exhaust gas discharged from the gas turbine subsystem 1 is also used to heat the organic working fluid in the organic Rankine cycle subsystem 2, so that the organic working fluid can expand and do work to generate electricity after being heated, and further reduce the temperature of the exhaust gas, realizing the recovery and utilization of the waste heat of the exhaust gas.

[0028] In the related art, during the process of recovering the waste heat of the exhaust gas by the gas turbine system, there is a large amount of heat loss.

[0029] In the hydrogen fuel gas turbine system 100 of the embodiment of the present invention, the waste heat of the exhaust gas is recovered for the first time in the first recuperator 3, and the waste heat of the exhaust gas is recovered for the second time in the heat exchanger 4. Through the two efficient utilizations of the waste heat of the exhaust gas, not only the utilization efficiency of the waste heat of the exhaust gas is improved, but also the operating efficiency of the gas turbine subsystem 1 and the organic Rankine cycle subsystem 2 is enhanced.

[0030] Therefore, the hydrogen fuel gas turbine system 100 of the embodiment of the present invention has the advantages of high waste heat utilization efficiency of the exhaust gas, etc.

[0031] In some embodiments, such as Figure 1As shown, the gas turbine subsystem 1 includes a first exhaust pipe 11 and a second exhaust pipe 12. The second exhaust pipe 12 is communicated with the first exhaust pipe 11 and is arranged downstream of the first exhaust pipe 11. The first exhaust pipe 11, the first recuperator 3, the second exhaust pipe 12 and the heat exchanger 4 are communicated in sequence.

[0032] For example, the high-temperature exhaust gas discharged from the gas turbine subsystem 1 first passes through the first exhaust pipe 11 and then flows into the second exhaust pipe 12.

[0033] First, the high-temperature exhaust gas is guided to the first recuperator 3 through the first exhaust pipe 11. In the first recuperator 3, the high-temperature exhaust gas preheats the hydrogen in the hydrogen supply pipe 5 and the air in the air supply pipe 6, increasing the temperature of the gas before entering the combustion process. Subsequently, the exhaust gas after preliminary cooling flows through the second exhaust pipe 12 to the heat exchanger 4, where the waste heat in this part of the exhaust gas is used to heat the organic working fluid in the organic Rankine cycle subsystem 2, enabling the organic working fluid to expand and do work to generate electricity after being heated. This design not only realizes the multi-level and efficient utilization of the exhaust gas waste heat but also significantly improves the energy efficiency and operation stability of the hydrogen fuel gas turbine system 100.

[0034] In some embodiments, as Figure 1 shown, the gas turbine subsystem 1 includes a compressor 13, a combustion chamber 14, and a turbine 15 that are communicated in sequence. The hydrogen supply pipe 5 is communicated with the combustion chamber 14. The air supply pipe 6 includes a first pipe 61 and a second pipe 62. The first pipe 61 is used to communicate the gas source and the compressor 13, and the second pipe 62 is used to communicate the compressor 13 and the combustion chamber 14.

[0035] For example, the hydrogen supply pipe 5 is directly communicated with the combustion chamber 14, ensuring that hydrogen can be efficiently and stably delivered to the combustion chamber 14.

[0036] The air supply pipe 6 is divided into two parts, the first pipe 61 and the second pipe 62. The first pipe 61 is used to connect the external gas source and the compressor 13, responsible for introducing the outside air into the compressor, while the second pipe 62 is used to connect the compressor 13 and the combustion chamber 14, guiding the high-pressure air compressed by the compressor 13 into the combustion chamber 14, where it is mixed and burned with the hydrogen input through the hydrogen supply pipe 5. The generated high-temperature and high-pressure gas drives the turbine 15 to rotate, thereby outputting mechanical energy or electrical energy.

[0037] The hydrogen fuel gas turbine system 100 according to the embodiments of the present invention not only ensures the precise control of the fuel and oxidant supply but also improves the overall system efficiency and stability by optimizing the connection mode between components, enabling the entire gas turbine subsystem 1 to operate in an efficient and environmentally friendly state.

[0038] In some embodiments, as Figure 1As shown in the figure, the first recuperator 3 is provided with a first heat exchange tube, a second heat exchange tube, and a third heat exchange tube that are independent of each other and capable of heat exchange. The second heat exchange tube is arranged between the first heat exchange tube and the third heat exchange tube. The hydrogen supply pipeline 5 is connected to the first heat exchange tube, the first tail gas pipe 11 is connected to the second heat exchange tube, and the second pipe 62 is connected to the third heat exchange tube.

[0039] For example, the hydrogen supply pipeline 5 is connected to the first heat exchange tube, so that the low-temperature liquid hydrogen can absorb heat and be converted into gas when passing through the first heat exchange tube, preparing for the subsequent combustion process. At the same time, the first tail gas pipe 11 is connected to the second heat exchange tube, introducing the high-temperature tail gas discharged from the gas turbine subsystem 1 into the second heat exchange tube, and using this part of waste heat to heat the hydrogen in the first heat exchange tube and the air in the third heat exchange tube, thus realizing the effective reuse of waste heat.

[0040] The second heat exchange tube is arranged between the first heat exchange tube and the third heat exchange tube, making the heat conduction path shorter, which helps the heat of the tail gas in the second heat exchange tube to transfer to the first heat exchange tube and the third heat exchange tube.

[0041] In addition, the second pipe 62 is connected to the third heat exchange tube, ensuring that the compressed high-pressure air can be further heated before entering the combustion chamber 14, improving the combustion efficiency.

[0042] It should be noted that the tail gas is first used to heat the hydrogen and air, and then the organic working fluid. This is designed based on the principle of cascaded energy utilization: since the initial temperature of the tail gas is relatively high, it is sufficient to effectively heat the low-temperature hydrogen to meet the conditions required for combustion. If the reverse operation is carried out, after heating the organic working fluid first, the temperature of the tail gas will drop significantly, and it may not be able to provide enough heat to meet the demand for hydrogen preheating, thus affecting the combustion efficiency and system performance. This design of the heating sequence not only improves the energy utilization efficiency but also ensures the efficient operation of each link.

[0043] In the hydrogen fuel gas turbine system 100 of the embodiment of the present invention, this design not only optimizes the distribution and use of heat but also improves the energy utilization rate and operation stability of the entire hydrogen fuel gas turbine system 100.

[0044] In some embodiments, as Figure 1 shown, the heat exchanger 4 is provided with a fourth heat exchange tube and a fifth heat exchange tube that are independent of each other and capable of heat exchange. The organic Rankine cycle subsystem 2 is provided with a third pipe 20. The second tail gas pipe 12 is connected to the fourth heat exchange tube, and the third pipe 20 is connected to the fifth heat exchange tube.

[0045] For example, the organic Rankine cycle subsystem 2 is connected to the fifth heat exchange tube through the third tube 20, enabling the organic working fluid to flow into the fifth heat exchange tube. The second tail gas pipe 12 is connected to the fourth heat exchange tube, introducing the high-temperature tail gas discharged from the gas turbine subsystem 1 into the fourth heat exchange tube, where the heat released by the high-temperature tail gas is transferred to the organic working fluid in the fifth heat exchange tube, thus realizing the reuse of waste heat.

[0046] The hydrogen fuel gas turbine system 100 according to the embodiment of the present invention not only improves the overall energy recovery efficiency of the hydrogen fuel gas turbine system 100, but also further reduces the tail gas emission temperature and reduces energy waste.

[0047] In some embodiments, as Figure 1 shown, the organic Rankine cycle subsystem 2 includes an expander 21, a condenser 22, a liquid storage tank 23, and a working fluid pump 24 that are sequentially connected through the fourth tube 26. One end of the third tube 20 is connected to the output end of the working fluid pump 24, and the other end of the third tube 20 is connected to the input end of the expander 21.

[0048] The output end of the expander 21, the condenser 22, the liquid storage tank 23, and the input end of the working fluid pump 24 are connected through the fourth tube 26.

[0049] One end of the third tube 20 is connected to the output end of the working fluid pump 24, and the other end is connected to the input end of the expander 21, ensuring that the high-temperature and high-pressure organic working fluid after being pressurized by the working fluid pump 24 can smoothly enter the expander 21. In the expander 21, the organic working fluid expands rapidly due to the pressure reduction and does work, driving the expander 21 to rotate to generate mechanical energy or electrical energy; Subsequently, the temperature and pressure of the organic working fluid after doing work both decrease, and it flows into the condenser 22 through the fourth tube 26, where it is further cooled and becomes liquid; then, the liquid organic working fluid flows into the liquid storage tank 23 for storage, and is re-pressurized from the liquid storage tank 23 through the working fluid pump 24, and then enters the expander 21 through the third tube 20 to do work again, completing a cycle process.

[0050] The hydrogen fuel gas turbine system 100 according to the embodiment of the present invention realizes the efficient recycling of the organic working fluid in the system, improving the stability and energy conversion efficiency of the entire system.

[0051] In some embodiments, as Figure 1 shown, the organic Rankine cycle subsystem 2 includes a second regenerator 25. The second regenerator 25 is provided between the output end of the expander 21 and the condenser 22. The second regenerator 25 includes a sixth heat exchange tube and a seventh heat exchange tube that are independent of each other and can perform heat exchange. The third tube 20 is connected to the sixth heat exchange tube, and the fourth tube 26 is connected to the seventh heat exchange tube.

[0052] After the organic working fluid has done work through the expander 21, it enters the seventh heat exchange tube through the fourth tube 26, and efficiently transfers the remaining heat to the low-temperature organic working fluid that enters the sixth heat exchange tube through the third tube 20, thereby increasing the temperature of the organic working fluid before entering the expander 21, enhancing its ability to expand and do work. At the same time, it also reduces the temperature of the organic working fluid about to enter the condenser 22, alleviates the working load of the condenser 22, and improves the thermal efficiency of the entire system.

[0053] The hydrogen fuel gas turbine system 100 according to the embodiment of the present invention, through this compact and efficient heat exchange structure, not only realizes the effective recovery and reuse of the waste heat inside the organic Rankine cycle subsystem 2, but also further optimizes the energy conversion process and enhances the overall performance of the organic Rankine cycle subsystem 2.

[0054] In some embodiments, as Figure 1 shown, the heat exchanger 4 is arranged between the output end of the sixth heat exchange tube and the input end of the expander 21, and the third tube 20 is connected to the heat exchanger 4 after passing through the second regenerator 25.

[0055] Specifically, the low-temperature and high-pressure organic working fluid first recovers part of the waste heat from the organic working fluid that has completed the expansion process in the second regenerator 25, and then continues to flow along the third tube 20 to the heat exchanger 4, where it is secondarily heated using the high-temperature exhaust gas discharged from the gas turbine subsystem 1, so that the temperature of the organic working fluid further increases and it enters the expander 21 in a better working state.

[0056] The hydrogen fuel gas turbine system 100 according to the embodiment of the present invention, by heating the organic working fluid output from the working fluid pump 24 twice, not only ensures that the organic working fluid can obtain sufficient heat before entering the expander 21, improves its work capacity and power generation efficiency, but also significantly improves the energy utilization efficiency of the hydrogen fuel gas turbine system 100.

[0057] The hydrogen fuel gas turbine system 100 according to the embodiment of the present invention, by effectively utilizing the waste heat resources inside the hydrogen fuel gas turbine system 100, minimizes energy loss and enhances the overall performance of the hydrogen fuel gas turbine system 100.

[0058] In some embodiments, the hydrogen fuel gas turbine system 100 includes a first generator 7 and a storage battery 9. The first generator 7 is electrically connected to the storage battery 9, and the organic Rankine cycle subsystem 2 can drive the first generator 7 to generate electricity. The first generator 7 and the storage battery 9 are connected by wires. The organic working fluid heated by the heat exchanger 4 expands and does work in the expander 21, and the mechanical energy generated during this process is converted into electrical energy by the first generator 7 and then stored in the storage battery 9.

[0059] In some embodiments, the hydrogen fuel gas turbine system 100 includes a second generator 8, which is connected to the compressor 13 to supply energy to the compressor 13.

[0060] In some embodiments, the second generator 8 is electrically connected to the battery 9.

[0061] When the compressor 13 is operating, the second generator 8 directly provides the required electrical energy for the compressor 13, ensuring that the compressor 13 can operate stably, thereby maintaining the efficient operation of the gas turbine subsystem 1. Since the performance of the compressor 13 directly affects the efficiency and stability of the entire system, supplying energy to it through the second generator 8 can ensure that air is effectively inhaled and compressed, optimize the fuel-air ratio during combustion, and thus improve the combustion efficiency of the fuel.

[0062] In addition, when the compressor 13 is not operating or the power demand is low, the second generator 8 can store the excess electrical energy generated in the battery 9. This improves the flexibility of the hydrogen fuel gas turbine system 100, enabling the electrical energy to be flexibly allocated when needed.

[0063] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A hydrogen fuel gas turbine system, characterized in that: include: Hydrogen supply pipeline and gas supply pipeline; a gas turbine subsystem, wherein the hydrogen supply pipeline provides hydrogen to the gas turbine subsystem, and the air supply pipeline provides air to the gas turbine subsystem; a first regenerator, in which the tail gas discharged from the gas turbine subsystem can heat the hydrogen in the hydrogen supply pipeline and the air in the air supply pipeline; An organic Rankine cycle subsystem, wherein an organic working medium flows in the organic Rankine cycle subsystem; A heat exchanger, in which the tail gas discharged from the gas turbine subsystem can heat the organic working medium in the organic Rankine cycle subsystem.

2. The hydrogen fuel gas turbine system according to claim 1, characterized in that: The gas turbine subsystem includes a first tail gas pipe and a second tail gas pipe, wherein the second tail gas pipe is connected to the first tail gas pipe and is arranged downstream of the first tail gas pipe, and the first tail gas pipe, the first regenerator, the second tail gas pipe and the heat exchanger are connected in sequence.

3. The hydrogen fuel gas turbine system according to claim 2, characterized in that: The gas turbine subsystem includes a compressor, a combustion chamber, and a turbine which are connected in sequence. The hydrogen supply pipeline is connected to the combustion chamber. The gas supply pipeline includes a first pipe and a second pipe. The first pipe is used to connect the gas source and the compressor, and the second pipe is used to connect the compressor and the combustion chamber.

4. The hydrogen fuel gas turbine system according to claim 3, characterized in that: The first heat exchanger is provided with a first heat exchange tube, a second heat exchange tube and a third heat exchange tube which are independent of each other and capable of heat exchange. The second heat exchange tube is arranged between the first heat exchange tube and the third heat exchange tube. The hydrogen supply pipeline is connected to the first heat exchange tube, the first tail gas pipe is connected to the second heat exchange tube, and the second pipe is connected to the third heat exchange tube.

5. The hydrogen fuel gas turbine system according to any one of claims 2 to 4, characterized in that: The heat exchanger is provided with a fourth heat exchange tube and a fifth heat exchange tube which are independent of each other and capable of heat exchange. The organic Rankine cycle subsystem is provided with a third tube. The second tail gas pipe is connected to the fourth heat exchange tube, and the third tube is connected to the fifth heat exchange tube.

6. The hydrogen fuel gas turbine system according to claim 5, characterized in that: The organic Rankine cycle subsystem includes an expander, a condenser, a liquid storage tank and a working fluid pump which are sequentially connected through a fourth tube, one end of the third tube is connected to the output end of the working fluid pump, and the other end of the third tube is connected to the input end of the expander.

7. The hydrogen fuel gas turbine system according to claim 6, characterized in that: The organic Rankine cycle subsystem includes a second regenerator, which is arranged between the output end of the expander and the condenser. The second regenerator includes a sixth heat exchange tube and a seventh heat exchange tube that are independent of each other and capable of heat exchange. The third tube is connected to the sixth heat exchange tube, and the fourth tube is connected to the seventh heat exchange tube.

8. The hydrogen fuel gas turbine system according to claim 7, characterized in that: The heat exchanger is arranged between the output end of the sixth heat exchange tube and the input end of the expander, and the third tube is connected to the heat exchanger after passing through the second heat regenerator.

9. The hydrogen fuel gas turbine system according to claim 3, characterized in that: The hydrogen fuel gas turbine system includes a first generator and a battery. The first generator is electrically connected to the battery. The organic Rankine cycle subsystem can drive the first generator to generate electricity.

10. The hydrogen fuel gas turbine system according to claim 9, characterized in that: The hydrogen fuel gas turbine system includes a second generator connected to the compressor to power the compressor; And / or, the second generator is electrically connected to the battery.

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