Gas power system

Abstract

The invention discloses a gas power system. The gas power system comprises a first gas turbine and a second gas turbine, an outlet of the first combustion chamber is communicated with an inlet of the first gas turbine; an outlet of the air compressor assembly is communicated with an inlet of the first combustion chamber; the first gas turbine is used for driving the air compressor assembly to work; an inlet of the second combustion chamber communicates with an outlet of the air compressor assembly and an outlet of the first gas turbine; a second gas turbine for outputting a driving force; an inlet of the second gas turbine communicates with an outlet of the second combustion chamber.

Description

Technical Field

[0001] The present invention relates to the field of power technology, and in particular to a gas power system. Background Art

[0002] A hydrogen gas turbine is an internal combustion engine that uses flowing hydrogen gas as a working fluid to drive the rotation of an impeller, converting the hydrogen gas's energy into useful work. In related technologies, a hydrogen gas turbine typically consists of a compressor, a gas turbine, and a drive mechanism. The gas turbine simultaneously drives both the compressor and drive mechanisms, making the hydrogen gas turbine inflexible to control. Summary of the Invention

[0003] In view of this, an embodiment of the present application provides a gas powered system.

[0004] To achieve the above object, the present invention adopts the following scheme:

[0005] The embodiment of the present application provides a gas powered system, comprising:

[0006] a first gas turbine;

[0007] a first combustion chamber, wherein an outlet of the first combustion chamber is in communication with an inlet of a first gas turbine;

[0008] an air compressor assembly, wherein the outlet of the air compressor assembly is in communication with the inlet of the first combustion chamber; the first gas turbine is used to drive the air compressor assembly to operate;

[0009] a second combustion chamber, wherein an inlet of the second combustion chamber is in communication with an outlet of the air compressor assembly and an outlet of the first gas turbine, respectively;

[0010] The second gas turbine is used to output driving force; the inlet of the second gas turbine is connected to the outlet of the second combustion chamber.

[0011] Some optional implementations further include:

[0012] A gas storage tank is used to store hydrogen gas; the outlet of the gas storage tank is connected to the inlet of the first combustion chamber.

[0013] Some optional implementations further include:

[0014] an expansion valve, disposed on a passage connecting the gas storage tank and the first combustion chamber or at an outlet of the gas storage tank; and / or,

[0015] A heat exchanger is provided on a passage connecting the gas storage tank and the first combustion chamber.

[0016] In some optional implementations, the air compressor assembly includes:

[0017] a first compressor, wherein the inlet of the first compressor is connected to the external environment; and the outlet of the first compressor is connected to the inlet of the second combustion chamber;

[0018] a second compressor, wherein the inlet of the second compressor is connected to the outlet of the first compressor, and the outlet of the second compressor is connected to the inlet of the first combustion chamber;

[0019] The first gas turbine is used to drive the first compressor and the second compressor.

[0020] Some optional implementations further include:

[0021] A gas storage tank for storing hydrogen gas; the outlet of the gas storage tank is connected to the inlet of the first combustion chamber;

[0022] A heat exchanger is provided on a passage connecting the gas storage tank and the first combustion chamber.

[0023] In some optional implementations, the heat exchanger has a first flow channel and a second flow channel disposed adjacent to each other, and the gas storage tank and the first combustion chamber are connected through the first flow channel;

[0024] The heat exchanger is located on a passage connecting the outlet of the first compressor and the inlet of the second compressor, and the outlet of the first compressor and the inlet of the second compressor are connected through the second flow channel.

[0025] In some optional implementations, the heat exchanger has a first flow channel and a second flow channel disposed adjacent to each other, and the gas storage tank and the first combustion chamber are connected through the first flow channel;

[0026] The heat exchanger is located on the exhaust passage of the second gas turbine, and the exhaust gas of the second gas turbine flows through the second flow channel.

[0027] In some optional implementations, the method further includes: an expansion valve,

[0028] The expansion valve is arranged on a passage connecting the outlet of the gas storage tank and the heat exchanger; or, the expansion valve is arranged at the outlet of the gas storage tank.

[0029] In some optional implementations, the gas storage tank is used to store liquid hydrogen gas.

[0030] Some optional implementations further include:

[0031] A generator is connected to the output shaft of the second gas turbine.

[0032] In the gas power system of the present application, the air compressor assembly is driven by the first gas turbine, and the second gas turbine is used to output driving force. Here, the air compressor assembly and the second gas turbine output driving force are driven by different gas turbines, which can greatly improve the control flexibility of the gas power system. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 This is an optional structural diagram of a gas power system in a specific embodiment of the present invention.

[0034] Figure numerals: 1. first compressor; 2. heat exchanger; 3. second compressor; 4. first combustion chamber; 5. first gas turbine; 6. second combustion chamber; 7. second gas turbine; 8. generator; 9. gas storage tank; 10. expansion valve; 11. first rotating shaft; 12. second rotating shaft. DETAILED DESCRIPTION

[0035] The technical solution of the present application is further elaborated in detail below with reference to the accompanying drawings and specific embodiments.

[0036] In the description of the embodiments of this application, it should be noted that, unless otherwise specified and limited, the term "connection" should be understood in a broad sense. For example, it can be an electrical connection, or it can be the internal connection between two components. It can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meaning of the above terms can be understood according to the specific circumstances.

[0037] It should be noted that the terms "first, second, and third" in the embodiments of the present application are merely used to distinguish similar objects and do not represent a specific ordering of the objects. It is understood that the terms "first, second, and third" can be interchanged to represent a specific order or precedence where permitted. It should be understood that the objects distinguished by "first, second, and third" can be interchanged where appropriate, such that the embodiments of the present application described herein can be implemented in an order other than that illustrated or described herein.

[0038] The following combination Figure 1 The gas power system described in the embodiments of the present application is described in detail.

[0039] The gas power system includes: a first gas turbine 5, a first combustion chamber 4, an air compressor assembly, a second combustion chamber 6, and a second gas turbine 7. The outlet of the first combustion chamber 4 is connected to the inlet of the first gas turbine 5; the outlet of the air compressor assembly is connected to the inlet of the first combustion chamber 4; the first gas turbine 5 is used to drive the air compressor assembly; the inlet of the second combustion chamber 6 is connected to the outlet of the air compressor assembly and the outlet of the first gas turbine 5 respectively; the second gas turbine 7 is used to output driving force; and the inlet of the second gas turbine 7 is connected to the outlet of the second combustion chamber 6.

[0040] In related art, hydrogen gas turbines generally consist of a compressor structure, a gas turbine, and a drive structure. The gas turbine drives both the compressor and drive structures simultaneously. This means that the speeds of the gas turbine, the compressor structure, and the drive structure are all the same, making the hydrogen gas turbine inflexible to control. For example, the speed of the compressor structure cannot be adjusted independently. In contrast, in the gas-fired power system of the present application, the air compressor assembly is driven by a first gas turbine 5, while the second gas turbine 7 is used to output driving force. Here, the air compressor assembly and the second gas turbine 7 are driven by different gas turbines, significantly improving the control flexibility of the gas-fired power system. For example, the speed of the air compressor assembly can be adjusted independently by the first gas turbine 5, and the driving force output by the second gas turbine 7 can also be adjusted independently by the second gas turbine 7. Furthermore, the hydrogen gas is first burned in the first combustion chamber 4 and then recombusted in the second combustion chamber 6, significantly improving the utilization rate of the hydrogen gas and the energy conversion rate of the gas-fired power system.

[0041] In the embodiment of the present application, the structure of the first gas turbine 5 is not limited. For example, the first gas turbine 5 can be an axial flow gas turbine or a centripetal flow gas turbine.

[0042] In the embodiment of the present application, the structure of the second gas turbine 7 is not limited. For example, the second gas turbine 7 can be an axial flow gas turbine or a centripetal flow gas turbine.

[0043] In the embodiment of the present application, the air compressor assembly is used to provide high-pressure air to the first combustion chamber 4. The structure of the air compressor assembly is not limited. For example, the air compressor assembly can be an axial flow air compressor or a centrifugal air compressor.

[0044] Here, the air compressor assembly may include one air compressor, or may include at least two air compressors.

[0045] In the embodiment of the present application, the first combustion chamber 4 is a rich-burn combustion chamber, and the second combustion chamber 6 is a lean-burn combustion chamber.

[0046] During operation, high-pressure air is supplied to the first combustion chamber 4 and the second combustion chamber 6 through the air compressor assembly. The hydrogen gas and the high-pressure air are mixed and burned in the first combustion chamber 4 in a rich-burning manner, generating high-temperature and high-pressure rich-burning gas which enters the first gas turbine 5 to drive the first gas turbine 5 to operate. The first gas turbine 5 drives the air compressor assembly to operate, thereby continuously supplying high-pressure air to the first combustion chamber 4 and the second combustion chamber 6. At the same time, the rich-burning gas in the first gas turbine 5 enters the second combustion chamber 6 through the outlet of the first gas turbine 5 and the inlet of the second combustion chamber 6. The rich-burning gas and the high-pressure air are mixed and burned in the second combustion chamber 6 to generate high-temperature and high-pressure lean-burning gas which enters the second gas turbine 7 to drive the second gas turbine 7 to operate and output driving force. Here, the exhaust gas at the outlet of the second gas turbine 7 can be directly discharged into the atmosphere or used for waste heat recovery.

[0047] It should be noted that the gas power system may further include a starter, which is used to start the air compressor assembly to provide power to the air compressor assembly when the gas power system is started, so that the air compressor assembly can provide high-pressure air when the gas power system is started. After the gas power system is started, the starter may no longer provide power to the air compressor assembly. Here, the starter and the air compressor assembly can have a connected state and a disconnected state via a clutch.

[0048] In the embodiments of the present application, the form of hydrogen gas is not limited. For example, hydrogen gas can be in gaseous state or liquid state.

[0049] In some optional implementations of the embodiments of the present application, the gas power system may further include: a gas tank 9, which is used to store hydrogen gas; the outlet of the gas tank 9 is connected to the inlet of the first combustion chamber 4, so as to provide hydrogen gas to the first combustion chamber 4 through the gas tank 9.

[0050] Of course, in other examples, the gas power system may also directly provide hydrogen gas through an external hydrogen gas pipeline.

[0051] Here, the hydrogen gas can be in liquid state. The gas storage tank 9 can be used to store the liquid hydrogen gas.

[0052] In this embodiment, the gas-fired power system may further include an expansion valve 10. The expansion valve 10 is used to regulate the outflow of the hydrogen gas and to reduce the pressure of the liquid hydrogen gas to form a gaseous hydrogen gas. By converting the liquid hydrogen gas into a gaseous hydrogen gas, the hydrogen gas can be burned more efficiently in the first combustion chamber 4, thereby improving the energy conversion rate of the gas-fired power system.

[0053] Here, the location of the expansion valve 10 is not limited. For example, the expansion valve 10 can be set on the passage connecting the gas storage tank 9 and the first combustion chamber 4. For another example, the expansion valve 10 can also be set at the outlet of the gas storage tank 9.

[0054] In this embodiment, the gas-fired power system may further include a heat exchanger 2, which is used to convert the liquid hydrogen gas into gaseous hydrogen gas after absorbing heat and to increase the temperature of the hydrogen gas. Heat exchanger 2 enables the hydrogen gas to have higher combustion efficiency in the first combustion chamber 4, thereby improving the energy conversion rate of the gas-fired power system.

[0055] In this implementation, the gas-fired power system may include at least one of a heat exchanger 2 and an expansion valve 10. It should be noted that when the liquid hydrogen gas changes from a liquid state to a gaseous state outside the first combustion chamber 4, the liquid hydrogen gas absorbs some energy from the external environment, thereby reducing the energy absorbed by the liquid hydrogen gas in the first combustion chamber 4 when it changes to a gaseous state. This can indirectly increase the combustion efficiency of the hydrogen gas in the first combustion chamber 4, thereby improving the energy conversion rate of the gas-fired power system.

[0056] In some optional implementations of the embodiments of the present application, such as Figure 1 As shown, the air compressor assembly may include: a first compressor 1 and a second compressor 3. The inlet of the first compressor 1 is connected to the external environment; the outlet of the first compressor 1 is connected to the inlet of the second combustion chamber 6; the inlet of the second compressor 3 is connected to the outlet of the first compressor 1, and the outlet of the second compressor 3 is connected to the inlet of the first combustion chamber 4; and a first gas turbine 5 is used to drive the first compressor 1 and the second compressor 3 to operate.

[0057] In this implementation, the first compressor 1 provides high-pressure air to the second compressor 3 and the second combustion chamber 6, while the second compressor 3 provides even higher-pressure air to the first combustion chamber 4. This allows different pressures in the first combustion chamber 4 and the second combustion chamber 6. Because the first combustion chamber 4 is a rich-burn combustion chamber and the second combustion chamber 6 is a lean-burn combustion chamber, providing higher-pressure air to the first combustion chamber 4 and high-pressure air to the second combustion chamber 6 significantly improves the energy conversion rate of the hydrogen fuel.

[0058] In this implementation, the structure of the first compressor 1 is not limited. For example, the first compressor 1 can be an axial flow air compressor or a centrifugal air compressor.

[0059] In this implementation, the structure of the second compressor 3 is not limited. For example, the second compressor 3 can be an axial flow air compressor or a centrifugal air compressor.

[0060] In this embodiment, the gas-fired power system may further include: a gas tank 9 and a heat exchanger 2. The gas tank 9 is used to store hydrogen gas; the outlet of the gas tank 9 is connected to the inlet of the first combustion chamber 4; the heat exchanger 2 is disposed in the passage connecting the gas tank 9 and the first combustion chamber 4 to increase the temperature of the hydrogen gas, thereby further improving the efficiency of hydrogen gas combustion.

[0061] The specific location of heat exchanger 2 is not limited. For example, heat exchanger 2 can be located in the passage connecting the outlet of first compressor 1 and the inlet of second compressor 3. This allows the high-pressure, high-temperature air output by first compressor 1 to heat the hydrogen gas, raising the temperature of the hydrogen gas and further improving the efficiency of hydrogen gas combustion. For another example, heat exchanger 2 can be located in the exhaust passage of second gas turbine 7. This allows exhaust gas from the exhaust passage of second gas turbine 7 to heat the hydrogen gas through heat exchanger 2. In other words, by recovering the energy of the exhaust gas to heat the hydrogen gas, the gas-fired power system's ability to provide output driving force can be greatly improved.

[0062] The structure of heat exchanger 2 is not limited here. For example, heat exchanger 2 may have a first flow channel and a second flow channel arranged adjacent to each other; the gas storage tank 9 and the first combustion chamber 4 may be connected through the first flow channel; and the outlet of the first compressor 1 and the inlet of the second compressor 3 may be connected through the second flow channel. This allows the hydrogen gas flowing through the first flow channel to absorb heat from the high-temperature, high-pressure air in the second flow channel. Of course, the exhaust gas from the second gas turbine 7 may also flow through the second flow channel.

[0063] Here, the first flow channel and the second flow channel are separated from each other and do not affect each other, but can exchange heat.

[0064] Here, the arrangement direction of the first flow channel and the second flow channel is not limited. For example, the first flow channel and the second flow channel can be arranged in parallel.

[0065] In this implementation, the gas power system may further include an expansion valve 10 , which may be disposed on a passage connecting the outlet of the gas storage tank 9 and the heat exchanger 2 ; or, the expansion valve 10 may be disposed at the outlet of the gas storage tank 9 .

[0066] The expansion valve 10 has been described above and will not be repeated here.

[0067] In this implementation, if Figure 1 As shown, the output shaft of the first gas turbine 5 can simultaneously drive the first compressor 1 and the second compressor 3 through the first rotating shaft 11 .

[0068] In some optional implementations of the embodiments of the present application, the gas power system may further include a generator 8, which is connected to the output shaft of the second gas turbine 7 to drive the generator 8 to generate electricity through the second gas turbine 7; here, the gas power system is a power generation system.

[0069] In this implementation, the output shaft of the second gas turbine 7 may be connected to the generator 8 via the second rotating shaft 12 .

[0070] Of course, in other implementations, the second gas turbine 7 can also directly drive other structures. For example, the second gas turbine 7 is used to drive the driving wheels of the traveling equipment to rotate.

[0071] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the invention can be embodied in other specific forms without departing from the spirit or essential characteristics of the invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the invention is defined by the appended claims, not the foregoing description, and all variations within the meaning and range of equivalents of the claims are intended to be included therein. Any reference sign in a claim should not be construed as limiting the claim to which it relates.

[0072] In addition, it should be understood that although this specification is described in terms of implementation methods, not every implementation method contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

Claims

1. A gas powered system, characterized in that: include: a first gas turbine; a first combustion chamber, wherein an outlet of the first combustion chamber is in communication with an inlet of a first gas turbine; an air compressor assembly, wherein the outlet of the air compressor assembly is in communication with the inlet of the first combustion chamber; the first gas turbine is used to drive the air compressor assembly to operate; a second combustion chamber, wherein an inlet of the second combustion chamber is in communication with an outlet of the air compressor assembly and an outlet of the first gas turbine, respectively; The second gas turbine is used to output driving force; the inlet of the second gas turbine is connected to the outlet of the second combustion chamber.

2. The gas powered system according to claim 1, characterized in that: Also includes: A gas storage tank is used to store hydrogen gas; the outlet of the gas storage tank is connected to the inlet of the first combustion chamber.

3. The gas powered system according to claim 2, characterized in that: Also includes: an expansion valve, disposed on a passage connecting the gas storage tank and the first combustion chamber or at an outlet of the gas storage tank; and / or, A heat exchanger is provided on a passage connecting the gas storage tank and the first combustion chamber.

4. The gas powered system according to claim 1, characterized in that: The air compressor assembly comprises: a first compressor, wherein the inlet of the first compressor is connected to the external environment; and the outlet of the first compressor is connected to the inlet of the second combustion chamber; a second compressor, wherein the inlet of the second compressor is connected to the outlet of the first compressor, and the outlet of the second compressor is connected to the inlet of the first combustion chamber; The first gas turbine is used to drive the first compressor and the second compressor.

5. The gas powered system according to claim 4, characterized in that: Also includes: A gas storage tank for storing hydrogen gas; the outlet of the gas storage tank is connected to the inlet of the first combustion chamber; A heat exchanger is provided on a passage connecting the gas storage tank and the first combustion chamber.

6. The gas powered system according to claim 5, characterized in that: The heat exchanger has a first flow channel and a second flow channel arranged adjacent to each other, and the gas storage tank and the first combustion chamber are connected through the first flow channel; The heat exchanger is located on a passage connecting the outlet of the first compressor and the inlet of the second compressor, and the outlet of the first compressor and the inlet of the second compressor are connected through the second flow channel.

7. The gas powered system according to claim 5, characterized in that: The heat exchanger has a first flow channel and a second flow channel arranged adjacent to each other, and the gas storage tank and the first combustion chamber are connected through the first flow channel; The heat exchanger is located on the exhaust passage of the second gas turbine, and the exhaust gas of the second gas turbine flows through the second flow channel.

8. The gas powered system according to claim 5, characterized in that: Also includes: Expansion valve, The expansion valve is arranged on a passage connecting the outlet of the gas storage tank and the heat exchanger; or, the expansion valve is arranged at the outlet of the gas storage tank.

9. The gas powered system according to claim 5, characterized in that: The gas storage tank is used to store liquid hydrogen gas.

10. The gas powered system according to any one of claims 1 to 9, characterized in that: Also includes: A generator is connected to the output shaft of the second gas turbine.

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