CN116181499A - Hydrogen blending structure and hydrogen-adding fuel supply system of gas turbine - Google Patents
Hydrogen blending structure and hydrogen-adding fuel supply system of gas turbine Download PDFInfo
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- CN116181499A CN116181499A CN202310106130.2A CN202310106130A CN116181499A CN 116181499 A CN116181499 A CN 116181499A CN 202310106130 A CN202310106130 A CN 202310106130A CN 116181499 A CN116181499 A CN 116181499A
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02C—GAS-TURBINE PLANTS; AIR INTAKES FOR JET-PROPULSION PLANTS; CONTROLLING FUEL SUPPLY IN AIR-BREATHING JET-PROPULSION PLANTS
- F02C9/00—Controlling gas-turbine plants; Controlling fuel supply in air- breathing jet-propulsion plants
- F02C9/26—Control of fuel supply
- F02C9/40—Control of fuel supply specially adapted to the use of a special fuel or a plurality of fuels
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Abstract
The invention discloses a hydrogen blending structure and a hydrogen blending fuel supply system of a gas turbine, wherein the hydrogen blending structure comprises: a natural gas fuel pipe in communication with the natural gas supply system; the hydrogen fuel pipe is arranged inside the natural gas fuel pipe and is communicated with the hydrogen supply system; the turbulent vortex generating pipe assembly is arranged inside the natural gas fuel pipe and communicated with the hydrogen fuel pipe; and the hydrogen fuel pipe and the turbulent vortex generating pipe component are provided with a plurality of hydrogen injection holes, and each hydrogen injection hole is suitable for injecting hydrogen to different radial positions in the natural gas fuel pipe. When natural gas flows through the hydrogen fuel pipe and the turbulent vortex generating pipe assembly, turbulent vortex is formed at the rear downstream of the hydrogen fuel pipe and the turbulent vortex generating pipe assembly under the action of pneumatic viscosity force, and the mixing of hydrogen sprayed from hydrogen spray holes at different radial positions in the natural gas fuel pipe and natural gas in the pipe can be promoted under the action of the turbulent vortex.
Description
Technical Field
The invention relates to the technical field of gas turbines, in particular to a hydrogen blending structure and a hydrogen blending fuel supply system of a gas turbine.
Background
Photovoltaic and wind power generation generally have obvious fluctuation, intermittence, seasonality and randomness, and the grid-connected and digestion problems of photovoltaic and wind power generation are increasingly prominent in recent years. The hydrogen energy is clean secondary energy, has high energy density and large capacity, is convenient to store and transport, generates hydrogen by utilizing renewable energy sources such as photovoltaic and wind energy, realizes the multi-way near and efficient utilization of the renewable energy sources, is one of important methods for solving the problem of grid-connected absorption of the renewable energy sources such as photovoltaic and wind power, and becomes an important component of an energy system in China.
The gas turbine is a mature device with highest large-scale energy conversion efficiency, the gas turbine has the advantages of environmental protection, low carbon, quick start and stop, strong lifting load capacity, excellent regulation performance and the like, and can burn hydrogen-doped fuel, thereby being beneficial to realizing clean and efficient utilization of fossil energy and promoting integration of wind, light and gas storage.
By the end of 10 months in 2022, the installation capacity of the domestic gas turbine generator set exceeds 1.44 hundred million kilowatts, and if the generator set generates electricity for 2600 hours per year, the annual energy production of natural gas is about 3744 hundred million kilowatt-hours, CO 2 About 12729 ten thousand tons are discharged. If the natural gas mixed fuel of 30 percent (volume ratio) of hydrogen is mixed on the combustion engine, CO 2 The emission is expected to be reduced by 1273 ten thousand tons/year.
The hydrogen loading fuel supply system is an important auxiliary system for the gas turbine to realize hydrogen loading combustion. Because the hydrogen gas phase is compared with natural gas, the method has the characteristics of high combustion reaction speed, low minimum ignition energy, small fuel calorific value per unit volume and the like, when the hydrogen gas and the natural gas are unevenly mixed in the hydrogen-doped fuel supply system, the combustion characteristics of the fuel entering the combustion chamber of the gas turbine can be changed due to the change of the hydrogen content, the unstable combustion of the gas turbine is easily caused, and faults such as backfire, high pollutant emission, combustion loss of the combustion chamber and the like can be generated when the combustion is serious. The hydrogen has poor mixing effect with natural gas due to light weight and poor penetrating power in the current hydrogen-doped fuel supply system.
In order to solve the problem of non-uniform mixing of hydrogen and natural gas, a complex hydrogen-doped fuel supply system is generally designed in the process of upgrading and reforming hydrogen-doped combustion of a gas turbine in the conventional gas turbine power plant, and a high-pressure tank structure for mixing the natural gas and the hydrogen is adopted, so that the hydrogen and the natural gas are mixed in a buffer high-pressure tank. The airflow velocity in the high-pressure blending tank is low, so that the blending uniformity of fuel can be ensured, but the high-pressure blending tank has higher requirements on the construction safety distance, and for an established gas turbine power plant, a construction land for a hydrogen blending system is not reserved generally, so that the gas turbine cannot realize hydrogen blending combustion, and the wide application of hydrogen fuel in the existing gas turbine power plant is limited.
Disclosure of Invention
Therefore, the technical problem to be solved by the invention is to overcome the defect of poor mixing effect of hydrogen and natural gas in the existing hydrogen-doped fuel supply system, so as to provide a hydrogen mixing structure and a gas turbine hydrogen-doped fuel supply system for improving the mixing uniformity of hydrogen and natural gas.
In order to achieve the above purpose, the technical scheme adopted by the invention is as follows:
a hydrogen blending structure disposed upstream of an intake end of a gas turbine; the hydrogen blending structure includes:
a natural gas fuel pipe in communication with the natural gas supply system;
the hydrogen fuel pipe is arranged inside the natural gas fuel pipe and is communicated with the hydrogen supply system;
a turbulent vortex generating pipe assembly disposed inside the natural gas fuel pipe and in communication with the hydrogen fuel pipe; a plurality of hydrogen injection holes are formed in the hydrogen fuel pipe and the turbulent vortex generating pipe assembly, and each hydrogen injection hole is suitable for injecting hydrogen to different radial positions in the natural gas fuel pipe;
when natural gas in the natural gas fuel pipe flows through the hydrogen fuel pipe and the turbulent vortex generating pipe assembly, under the action of pneumatic viscosity force, turbulent vortex is formed at the downstream of the hydrogen fuel pipe and the turbulent vortex generating pipe assembly, so that the hydrogen and the natural gas are uniformly mixed.
According to the technical scheme, the hydrogen fuel pipe is vertically arranged inside the natural gas fuel pipe.
According to a further optimized technical scheme, the turbulent vortex generating pipe assembly comprises a plurality of layers of circular hydrogen fuel manifolds which are arranged at different radial positions in the natural gas fuel pipe at equal intervals, and each circular hydrogen fuel manifold is respectively communicated with the hydrogen fuel pipe and is coaxially arranged with the natural gas fuel pipe.
Further optimizing the technical scheme, equidistant circumference of hydrogen jet hole is offered on circular hydrogen fuel manifold and hydrogen fuel pipe back face of being opposite to natural gas air current direction, the opening direction of hydrogen jet hole is parallel with natural gas fuel pipe axis direction.
A gas turbine hydrogen-loaded fuel supply system comprising:
a natural gas supply system for supplying natural gas;
a hydrogen supply system for supplying hydrogen;
the hydrogen mixing structure is arranged at the joint of the natural gas supply system and the hydrogen supply system, and the gas outlet end is connected with the fuel inlet end of the combustion chamber of the gas turbine; the hydrogen blending structure is used for uniformly blending natural gas and hydrogen and inputting the blended gas into the gas turbine.
According to the technical scheme, a pressure regulating station for further blending the blended gas is arranged between the hydrogen blending structure and the gas turbine.
Further optimizing technical scheme, hydrogen feed system includes hydrogen air supply and connects the hydrogen conveyer pipe that sets up between hydrogen air supply and hydrogen fuel pipe, has set gradually hydrogen filter, hydrogen stop valve, hydrogen flow control valve and hydrogen flowmeter on the hydrogen conveyer pipe.
According to the technical scheme, the natural gas supply system comprises a natural gas source and a natural gas conveying pipe connected between the natural gas source and the natural gas fuel pipe, and a natural gas filter, a natural gas stop valve, a natural gas flow regulating valve and a natural gas flowmeter are sequentially arranged on the natural gas conveying pipe.
The technical scheme is further optimized, and the system also comprises a blending control system, wherein the blending control system is used for respectively adjusting the flow of hydrogen and natural gas fuel in real time according to the natural gas hydrogen blending proportion and the fuel flow requirement sent by the gas turbine.
The technical scheme of the invention has the following advantages:
1. according to the hydrogen blending structure provided by the invention, because the turbulence vortex generating pipe assembly is arranged in the natural gas fuel pipe, when natural gas in the natural gas fuel pipe flows through the hydrogen fuel pipe and the turbulence vortex generating pipe assembly, under the action of pneumatic viscosity, the turbulence vortex with opposite periodical rotation directions and regular arrangement is formed at the back downstream of the hydrogen fuel pipe and the turbulence vortex generating pipe assembly, and under the action of the turbulence vortex, the blending of hydrogen sprayed from the hydrogen spraying holes at different radial positions in the natural gas fuel pipe and natural gas in the pipe can be promoted, so that the hydrogen can be sprayed out at different radial positions in the natural gas fuel pipe uniformly, the problem of uneven blending of the hydrogen and the natural gas due to light weight and poor penetrating power is solved, and the uniformity of the blending of the hydrogen and the natural gas is improved.
2. The turbulent vortex generating pipe assembly comprises a plurality of layers of circular hydrogen fuel manifolds, utilizes the karman turbulent vortex principle formed by the airflow flowing through circular barriers, generates a large amount of turbulent vortex at the rear back downstream of the hydrogen fuel manifolds and the hydrogen fuel pipes, and can further improve the mixing effect of hydrogen and natural gas.
3. The hydrogen-doped fuel supply system of the gas turbine provided by the invention is based on the existing natural gas pipeline of the gas turbine power plant, can provide stable and uniform hydrogen-doped fuel for the gas turbine by simple modification, does not need to additionally design a hydrogen mixing station, does not comprise a high-pressure mixing tank or other pressure container, has low requirements on safety distance, and improves the use convenience of hydrogen energy in the established gas turbine power plant.
4. According to the hydrogen-doped fuel supply system of the gas turbine, the hydrogen-doped structure is arranged at the upstream of the existing pressure regulating station of the gas turbine power plant, so that the mixing of hydrogen and natural gas fuel is further enhanced by utilizing pipelines, valve bodies, filters and the like in the pressure regulating station, and the mixing uniformity of the hydrogen is further improved.
5. According to the hydrogen-doped fuel supply system of the gas turbine, the mixing control system respectively controls the opening of the hydrogen flow regulating valve and the opening of the natural gas flow regulating valve according to the hydrogen-doped proportion and the fuel flow requirement of the natural gas sent by the gas turbine, and the flow of the hydrogen and the natural gas fuel are regulated in real time, so that the mixing regulation of the hydrogen and the natural gas is more intelligent.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are needed in the description of the embodiments or the prior art will be briefly described, and it is obvious that the drawings in the description below are some embodiments of the present invention, and other drawings can be obtained according to the drawings without inventive effort for a person skilled in the art.
FIG. 1 is a central cross-sectional view of a hydrogen blending structure according to the present invention;
FIG. 2 is a front view of a hydrogen blending structure according to the present invention;
FIG. 3 is a schematic diagram of a gas turbine hydrogen-loaded fuel supply system according to the present invention.
Reference numerals:
1. the device comprises a hydrogen gas source, 2, a hydrogen filter, 3, a hydrogen stop valve, 4, a hydrogen flow regulating valve, 5, a hydrogen flowmeter, 6, a natural gas source, 7, a natural gas filter, 8, a natural gas stop valve, 9, a natural gas flow regulating valve, 10, a natural gas flowmeter, 11, a hydrogen mixing structure, 12, a pressure regulating station, 13, a gas turbine, 14, a mixing control system, 15, a hydrogen fuel pipe, 16, a natural gas fuel pipe, 17, a hydrogen jet hole, 18 and a circular hydrogen fuel manifold.
Detailed Description
The following description of the embodiments of the present invention will be made apparent and fully in view of the accompanying drawings, in which some, but not all embodiments of the invention are shown. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
In the description of the present invention, it should be noted that the directions or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present invention and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.
In addition, the technical features of the different embodiments of the present invention described below may be combined with each other as long as they do not collide with each other.
Example 1
As shown in fig. 1 and 2, this embodiment discloses a specific embodiment of a hydrogen blending structure, which is disposed upstream of the air inlet end of the gas turbine 13, so that the present invention is to blend natural gas and hydrogen before entering the gas turbine 13, and avoids the problem of poor blending effect due to limited internal volume of the gas turbine.
The hydrogen blending structure includes a natural gas fuel pipe 16, a hydrogen fuel pipe 15, and a turbulent vortex generating pipe assembly.
The natural gas fuel line 16 communicates with a natural gas supply system for receiving natural gas supplied by the natural gas supply system.
The hydrogen fuel pipe 15 is disposed inside the natural gas fuel pipe 16 and communicates with a hydrogen supply system for receiving hydrogen supplied by the hydrogen supply system.
The turbulent vortex generating tube assembly is disposed within the natural gas fuel tube 16 and communicates with the hydrogen fuel tube 15. The hydrogen fuel pipe 15 and the turbulent vortex generating pipe assembly are provided with a plurality of hydrogen injection holes 17, and each hydrogen injection hole 17 is suitable for injecting hydrogen to different radial positions in the natural gas fuel pipe 16.
According to the hydrogen blending structure, because the turbulence vortex generating pipe assembly is arranged in the natural gas fuel pipe 16, when natural gas in the natural gas fuel pipe 16 flows through the hydrogen fuel pipe 15 and the turbulence vortex generating pipe assembly, under the action of pneumatic viscosity force, the turbulence vortex with opposite periodical rotation directions and regular arrangement is formed at the rear back downstream of the hydrogen fuel pipe 15 and the turbulence vortex generating pipe assembly, and under the action of the turbulence vortex, the blending of hydrogen sprayed from the hydrogen spray holes at different radial positions in the natural gas fuel pipe 16 and natural gas in the pipe can be promoted, so that the hydrogen and the natural gas are uniformly blended.
More specifically, the hydrogen fuel pipe 15 is vertically disposed inside the natural gas fuel pipe 16.
As a preferred embodiment, the turbulent vortex generating tube assembly comprises a plurality of layers of circular hydrogen fuel manifolds 18 equally spaced at different radial locations within the natural gas fuel tube 16, each circular hydrogen fuel manifold 18 being in communication with a respective hydrogen fuel tube 15 and coaxially disposed with the natural gas fuel tube 16. The embodiment utilizes the karman turbulent vortex principle formed by the airflow flowing through the circular barrier to generate a large amount of turbulent vortex at the rear back downstream of the hydrogen fuel manifold and the hydrogen fuel pipe, and can further improve the mixing effect of hydrogen and natural gas.
The hydrogen jet holes 17 are circumferentially arranged on the back surfaces of the circular hydrogen fuel manifold 18 and the hydrogen fuel pipes 15, which are opposite to the natural gas flow direction, at equal intervals, and the opening direction of the hydrogen jet holes 17 is parallel to the axial line direction of the natural gas fuel pipes 16. As shown in fig. 2, in the front view of the hydrogen blending structure, the hydrogen injection holes on the circular hydrogen fuel manifold 18 and the hydrogen injection holes on the hydrogen fuel pipe 15 form a plurality of hydrogen injection hole rings, each hydrogen injection hole ring is provided with a plurality of hydrogen injection holes in an equidistant circumferential direction, and the hydrogen injection holes are perpendicular to the natural gas fuel pipe wall direction in an equidistant manner. In this embodiment, under the dual actions of the multi-layer circular arranged hydrogen injection holes and the turbulent vortex, the hydrogen injection can be uniformly distributed at different radial positions in the natural gas fuel pipe 16, so as to solve the problem that the hydrogen is unevenly mixed with the natural gas due to light weight and poor penetrating power.
According to the hydrogen blending structure, the hydrogen fuel pipe 15 is vertically inserted into the natural gas fuel pipe 16, meanwhile, multiple paths of circular hydrogen fuel manifolds 18 communicated with the hydrogen fuel pipe 15 are arranged at different radial positions in the natural gas fuel pipe 16, and the back surfaces of the circular hydrogen fuel manifolds 18 and the hydrogen fuel pipe 15, which are opposite to the natural gas flow direction, are provided with a plurality of hydrogen injection holes at equal intervals in a circular shape, so that the blending effect of hydrogen and natural gas is improved.
Example 2
As shown in fig. 3, the present embodiment discloses a gas turbine hydrogen-incorporating fuel supply system including a natural gas supply system, a hydrogen supply system, and a hydrogen blending structure in the embodiment.
And the natural gas supply system is used for supplying natural gas.
And the hydrogen supply system is used for supplying hydrogen.
The hydrogen blending structure is arranged at the joint of the natural gas supply system and the hydrogen supply system, and the gas outlet end is connected with the fuel inlet end of the combustion chamber of the gas turbine 13. The hydrogen blending structure is used for uniformly blending natural gas with hydrogen and inputting the blended gas into the gas turbine 13.
According to the hydrogen-doped fuel supply system of the gas turbine, the existing natural gas pipeline of the gas turbine power plant is modified, the hydrogen supply system and the hydrogen-doped structure are arranged on the existing natural gas pipeline, additional high-pressure mixing tank equipment is not needed, the requirement on construction safety distance is low, the problem that the hydrogen-doped combustion of the gas turbine cannot be realized due to the fact that the existing gas turbine power plant cannot construct a hydrogen mixing station because of land limitation can be solved, and then the hydrogen energy can be popularized and applied to a large number of existing gas turbine power plants.
As a further improved embodiment, a pressure regulating station 12 for further blending the blended gas is provided on the mixture gas transfer line between the hydrogen blending structure and the gas turbine 13. The hydrogen blending structure is arranged at the upstream of the existing pressure regulating station 12 of the gas turbine power plant, so that the blending of hydrogen and natural gas fuel is further enhanced by utilizing pipelines, valve bodies, filters and the like in the pressure regulating station, and the blending uniformity of the hydrogen is further improved.
The hydrogen supply system comprises a hydrogen source 1 and a hydrogen conveying pipe connected between the hydrogen source 1 and a hydrogen fuel pipe 15, and the hydrogen conveying pipe is sequentially provided with a hydrogen filter 2, a hydrogen stop valve 3, a hydrogen flow regulating valve 4 and a hydrogen flowmeter 5. Wherein, the hydrogen filter 2 is used for filtering the hydrogen supplied by the hydrogen source 1; the hydrogen stop valve 3 is used for controlling the on-off of the hydrogen conveying pipe so as to control whether the hydrogen source 1 performs the gas supply operation or not; the hydrogen flowmeter 5 is used for detecting the conveying flow of the hydrogen on the hydrogen conveying pipe; the hydrogen flow regulating valve 4 is used for regulating the delivery flow of the hydrogen on the hydrogen delivery pipe according to the requirements of the gas turbine.
The natural gas supply system comprises a natural gas source 6 and a natural gas conveying pipe connected between the natural gas source 6 and a natural gas fuel pipe 16, wherein a natural gas filter 7, a natural gas stop valve 8, a natural gas flow regulating valve 9 and a natural gas flowmeter 10 are sequentially arranged on the natural gas conveying pipe. Wherein the natural gas filter 7 is used for filtering the natural gas supplied by the natural gas source 6; the natural gas stop valve 8 is used for controlling the on-off of the natural gas conveying pipe so as to control whether the natural gas source 6 performs gas supply operation or not; the natural gas flowmeter 10 is used for detecting the conveying flow rate of natural gas on a natural gas conveying pipe; the natural gas flow regulating valve 9 is used for regulating the natural gas conveying flow on the natural gas conveying pipe according to the requirements of the gas turbine.
As a further improved embodiment, a gas turbine hydrogen-adding fuel supply system further includes a mixing control system 14, the output ends of the gas turbine 13, the hydrogen flow meter 5 and the natural gas flow meter 10 are respectively connected to the input end of the mixing control system 14, and the controlled ends of the hydrogen stop valve 3, the hydrogen flow rate regulating valve 4, the natural gas stop valve 8 and the natural gas flow rate regulating valve 9 are respectively connected to the output end of the mixing control system 14. The blending control system 14 is used for respectively adjusting the flow rates of the hydrogen and the natural gas fuel in real time according to the natural gas hydrogen blending proportion and the fuel flow rate requirement sent by the gas turbine 13.
The working principle of the hydrogen-doped fuel supply system of the gas turbine is as follows:
the hydrogen fuel flows out from the hydrogen source 1, flows through the hydrogen filter 2, the hydrogen stop valve 3, the hydrogen flow regulating valve 4 and the hydrogen flowmeter 5 in sequence through the hydrogen delivery pipe, enters the hydrogen mixing structure 11, and is sprayed out through the hydrogen spraying holes 17 arranged on the circular hydrogen fuel manifold 18 and the hydrogen fuel pipe 15. Simultaneously, natural gas fuel flows out from a natural gas source 6, flows through a natural gas filter 7, a natural gas stop valve 8, a natural gas flow regulating valve 9 and a natural gas flowmeter 10 in sequence through a natural gas conveying pipe, enters a hydrogen blending structure 11, and is blended with hydrogen fuel sprayed out from hydrogen spraying holes 17 at different radial positions. When natural gas flows through the hydrogen fuel pipes 15 and the circular hydrogen fuel manifolds 18 in the hydrogen blending structure 11, turbulent eddies with opposite periodic rotation directions and regular arrangement are formed downstream of the hydrogen fuel pipes 15 and the circular hydrogen fuel manifolds 18 under the aerodynamic force. Under the action of turbulent vortex, the mixing of the hydrogen and the natural gas sprayed from different radial positions is accelerated.
The mixed gas after blending enters the existing natural gas pressure regulating station 12 of the power plant through a mixed gas conveying pipeline, the blending of hydrogen and natural gas fuel is further enhanced by utilizing pipelines, valve bodies, filters and the like in the pressure regulating station 12, and finally the mixed gas enters the gas turbine 13 to be combusted, so that energy is released.
In the whole working process, the blending control system 14 respectively controls the opening of the hydrogen flow regulating valve 4 and the opening of the natural gas flow regulating valve 9 according to the natural gas hydrogen blending proportion and the fuel flow requirement sent by the gas turbine, and adjusts the flows of the hydrogen and the natural gas fuel in real time.
It is apparent that the above examples are given by way of illustration only and are not limiting of the embodiments. Other variations or modifications of the above teachings will be apparent to those of ordinary skill in the art. It is not necessary here nor is it exhaustive of all embodiments. And obvious variations or modifications thereof are contemplated as falling within the scope of the present invention.
Claims (9)
1. A hydrogen blending structure, characterized in that the hydrogen blending structure is disposed upstream of an intake end of a gas turbine (13); the hydrogen blending structure includes:
a natural gas fuel line (16) in communication with the natural gas supply system;
a hydrogen fuel pipe (15) which is arranged inside the natural gas fuel pipe (16) and is communicated with a hydrogen supply system;
a turbulent vortex generating tube assembly disposed inside the natural gas fuel tube (16) and in communication with the hydrogen fuel tube (15); a plurality of hydrogen injection holes (17) are formed in each of the hydrogen fuel pipe (15) and the turbulent vortex generating pipe assembly, and each hydrogen injection hole (17) is suitable for injecting hydrogen to different radial positions in the natural gas fuel pipe (16);
when natural gas in the natural gas fuel pipe (16) flows through the hydrogen fuel pipe (15) and the turbulent vortex generating pipe assembly, under the action of pneumatic viscosity force, turbulent vortex is formed at the downstream of the hydrogen fuel pipe (15) and the turbulent vortex generating pipe assembly, so that hydrogen and natural gas are uniformly mixed.
2. A hydrogen blending structure according to claim 1, wherein the hydrogen fuel pipe (15) is arranged vertically inside the natural gas fuel pipe (16).
3. A hydrogen blending structure according to claim 2, wherein the turbulence vortex generating pipe assembly comprises a plurality of layers of circular hydrogen fuel manifolds (18) arranged at different radial positions within the natural gas fuel pipe (16) at equal intervals, each circular hydrogen fuel manifold (18) being in communication with a respective hydrogen fuel pipe (15) and being coaxially arranged with the natural gas fuel pipe (16).
4. A hydrogen blending structure according to claim 3, wherein the hydrogen injection holes (17) are circumferentially arranged at equal intervals on the rear back surface of the circular hydrogen fuel manifold (18) and the hydrogen fuel pipe (15) facing away from the natural gas flow direction, and the opening direction of the hydrogen injection holes (17) is parallel to the central axis direction of the natural gas fuel pipe (16).
5. A gas turbine hydrogen-loaded fuel supply system, comprising:
a natural gas supply system for supplying natural gas;
a hydrogen supply system for supplying hydrogen;
a hydrogen blending structure as claimed in any one of claims 1 to 4, arranged at the junction of the natural gas supply system and the hydrogen supply system, and having an outlet end connected to the fuel inlet end of the combustion chamber of the gas turbine (13); the hydrogen blending structure is used for uniformly blending natural gas and hydrogen and inputting the blended gas into a gas turbine (13).
6. A gas turbine hydrogen blending fuel supply system according to claim 5, characterized in that a pressure regulating station (12) for further blending the blended gas is arranged between the hydrogen blending structure and the gas turbine (13).
7. The hydrogen-doped fuel supply system of a gas turbine according to claim 5, wherein the hydrogen supply system comprises a hydrogen source (1) and a hydrogen conveying pipe connected between the hydrogen source (1) and a hydrogen fuel pipe (15), and the hydrogen conveying pipe is sequentially provided with a hydrogen filter (2), a hydrogen stop valve (3), a hydrogen flow regulating valve (4) and a hydrogen flowmeter (5).
8. The hydrogen-doped fuel supply system of a gas turbine according to claim 5, wherein the natural gas supply system comprises a natural gas source (6) and a natural gas delivery pipe connected between the natural gas source (6) and a natural gas fuel pipe (16), and the natural gas delivery pipe is sequentially provided with a natural gas filter (7), a natural gas stop valve (8), a natural gas flow regulating valve (9) and a natural gas flowmeter (10).
9. A gas turbine hydrogen loading fuel supply system according to any one of claims 5 to 8, further comprising a blending control system (14), wherein the blending control system (14) is configured to adjust the flow rates of hydrogen and natural gas fuel in real time according to the natural gas loading ratio and fuel flow requirements from the gas turbine (13), respectively.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202310106130.2A CN116181499A (en) | 2023-01-31 | 2023-01-31 | Hydrogen blending structure and hydrogen-adding fuel supply system of gas turbine |
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| CN202310106130.2A CN116181499A (en) | 2023-01-31 | 2023-01-31 | Hydrogen blending structure and hydrogen-adding fuel supply system of gas turbine |
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