A gas turbine fuel atomizing air mixing component

Abstract

This utility model relates to the field of gas turbine technology, and particularly to a gas turbine fuel atomization air mixing assembly, comprising a three-way valve. An air supply assembly is fixedly sleeved at the left end of the three-way valve, a fuel supply assembly is fixedly sleeved at the upper end of the three-way valve, a filter assembly is movably sleeved within the fuel supply assembly, and an atomization mixing assembly is fixedly sleeved at the lower end of the three-way valve. In this gas turbine fuel atomization air mixing assembly, external fuel is filtered for impurities by a filter screen and then dispersed into multiple fuel streams through fuel diversion holes on a fixed disc. External compressed air is diverted into multiple air streams by an annular array of air diversion pipes. The two streams initially converge within the three-way valve and then flow into the atomization mixing pipe, where they are fully mixed and atomized by the action of an atomization mixing spiral plate. This process not only filters fuel impurities but also achieves efficient mixing and good atomization of fuel and air, providing a uniformly mixed fuel-air mixture for the gas turbine combustion chamber.

Description

Technical Field

[0001] This utility model relates to the field of gas turbine technology, and in particular to a gas turbine fuel atomization air mixing component. Background Technology

[0002] A gas turbine is a power machine that uses a continuously flowing gas as the working fluid to drive a high-speed rotating impeller, thereby converting the energy of fuel into mechanical energy. It has wide and important applications in many fields such as energy and aviation. During operation, the fuel and air must be thoroughly mixed and well atomized to ensure combustion efficiency and stable operation of the gas turbine.

[0003] However, existing fuel atomization-air mixing structures for gas turbines still have the following problems during use: 1. Impurities are easily present in the fuel, which, if not filtered, can affect the mixing effect; 2. The mixing and atomization degree of fuel and air is not ideal, which adversely affects the combustion efficiency and overall performance of the gas turbine. Therefore, we have introduced a gas turbine fuel atomization-air mixing component. Utility Model Content

[0004] The main objective of this invention is to provide a fuel atomization air mixing component for gas turbines, which can effectively solve the problems in the background art.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows: A gas turbine fuel atomizing air mixing assembly includes a tee, an air supply assembly fixedly sleeved at the left end of the tee, a first flange fixedly sleeved at the left side of the air supply assembly, a fuel supply assembly fixedly sleeved at the upper end of the tee, a filter assembly movably sleeved inside the fuel supply assembly, a second flange fixedly sleeved at the upper part of the fuel supply assembly, and an atomizing mixing assembly fixedly sleeved at the lower end of the tee.

[0006] Preferably, the atomizing mixing assembly includes an atomizing mixing tube, an atomizing mixing spiral plate is fixedly sleeved inside the atomizing mixing tube, a mixing nozzle is fixedly connected to the lower end of the atomizing mixing tube, and the upper end of the atomizing mixing tube is fixedly sleeved together with the lower end of the tee.

[0007] By adopting the above technical solution: the atomizing mixing tube provides a channel for fuel and air mixing, and atomization... The mixing spiral plate enables the fuel and air to fully contact, mix and form a swirling flow during the flow, thus atomizing the fuel. The mixing nozzle then sprays out the atomized and mixed fuel-air mixture to provide a mixed gas for combustion in the gas turbine.

[0008] Preferably, the mixing nozzle is configured as a tapered structure that is wider at the top and narrower at the bottom.

[0009] By adopting the above technical solution, the cone-shaped mixing nozzle, which is wider at the top and narrower at the bottom, can concentrate the mixed gas.

[0010] Preferably, the air supply assembly includes an air inlet pipe, a fixed cylinder is fixedly sleeved inside the air inlet pipe, a plurality of air diversion pipes are inserted and fixedly connected to the right end of the fixed cylinder, and the right end of the air inlet pipe is fixedly sleeved together with the left end of the tee.

[0011] By adopting the above technical solution, several air diversion pipes can disperse air into multiple airflows, allowing air and fuel to mix more thoroughly.

[0012] Preferably, several of the air splitters are arranged in a circular array around the center of the fixed cylinder.

[0013] By adopting the above technical solution, the air distribution pipes in a ring array can allow air to enter the three-way valve from different directions, making the air and fuel more evenly distributed when they are initially mixed in the three-way valve.

[0014] Preferably, the fuel supply assembly includes a fuel inlet pipe, the upper part of the inner wall of the fuel inlet pipe has several T-shaped slots, the lower part of the fuel inlet pipe is fixedly sleeved with a fixing plate, the upper end of the fixing plate has several through-holes for fuel diversion, and the lower end of the fuel inlet pipe is inserted and fixedly connected to the upper end of the tee.

[0015] By adopting the above technical solution, the fuel diversion orifice can disperse the fuel into multiple fuel streams, which facilitates mixing with air.

[0016] Preferably, the filter assembly includes a frame, with a filter screen embedded in the lower part of the inner wall of the frame, and a plurality of T-shaped plates fixedly connected to the outer surface of the frame.

[0017] By adopting the above technical solution, the filter screen can filter impurities in the fuel.

[0018] Preferably, the sleeve is movably fitted inside the fuel inlet pipe, and the plurality of T-shaped clamps are respectively movably fitted inside the corresponding plurality of T-shaped clamp slots.

[0019] By adopting the above technical solution: the combination of the sleeve frame and the T-shaped clamp plate and T-shaped groove, the filter assembly can be easily installed in the fuel inlet pipe, and the structure is stable after installation. At the same time, it is convenient to perform maintenance operations on the filter assembly later.

[0020] Compared with the prior art, the present invention has the following beneficial effects: In this invention, the filter assembly frame is installed by engaging a T-shaped clamp with a T-shaped groove in the fuel inlet pipe. The external compressed air pipeline and fuel delivery pipeline are then connected via a first flange and a second flange, respectively. After entering the fuel inlet pipe, external fuel is filtered for impurities by the filter screen and then dispersed into multiple fuel streams through the fuel distribution holes of the fixed disc. External compressed air enters the air inlet pipe and is then divided into multiple air streams by the annular array of air distribution pipes. The two streams initially converge in the tee before flowing into the atomizing mixing pipe, where they are fully mixed and atomized by the atomizing mixing spiral plate. Finally, they are ejected through a conical mixing nozzle. This process not only filters fuel impurities but also achieves efficient mixing and good atomization of fuel and air, providing a uniformly mixed fuel-air mixture for the gas turbine combustion chamber and effectively improving the combustion efficiency and operational stability of the gas turbine. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the overall structure of a gas turbine fuel atomization air mixing component according to the present invention; Figure 2 This is a cross-sectional view of the structure of a gas turbine fuel atomizing air mixing component according to the present invention (the three-way valve, air supply component, fuel supply component and atomizing mixing component are cut out). Figure 3 This is a cross-sectional view of the air supply component of a gas turbine fuel atomization air mixing component according to the present invention (the air inlet pipe is cut out). Figure 4 This is a cross-sectional view of the fuel supply assembly of a gas turbine fuel atomization air mixing assembly according to the present invention (the fuel inlet pipe is shown in the cross-section). Figure 5 This is a schematic diagram of the filter component of a gas turbine fuel atomization air mixing assembly according to the present invention; Figure 6 This utility model relates to an atomizing and mixing component for a gas turbine fuel atomization and air mixing assembly. A structural schematic diagram (with the atomizing mixing tube and mixing nozzle cut out).

[0022] In the diagram: 1. Tee; 2. Air supply assembly; 3. First flange; 4. Fuel supply assembly; 5. Filter assembly; 6. Second flange; 7. Atomizing mixing assembly; 21. Air inlet pipe; 22. Fixed cylinder; 23. Air splitter pipe; 41. Fuel inlet pipe; 42. T-slot; 43. Fixing plate; 44. Fuel splitter hole; 51. Sleeve frame; 52. Filter screen; 53. T-slot plate; 71. Atomizing mixing pipe; 72. Atomizing mixing spiral plate; 73. Mixing nozzle. Detailed Implementation

[0023] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0024] In the description of this utility model, it should be noted that the terms "upper," "lower," "inner," "outer," "front end," "rear end," "both ends," "one end," and "the other end," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0025] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," and "connected," etc., should be interpreted broadly. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0026] Please see Figure 1-6 This utility model provides a technical solution: A gas turbine fuel atomizing air mixing assembly includes a tee 1, with an air supply assembly 2 fixedly sleeved at the left end of the tee 1, and a first flange 3 fixedly sleeved at the left side of the air supply assembly 2. The tee 1... A fuel supply assembly 4 is fixedly sleeved at one end, a filter assembly 5 is movably sleeved inside the fuel supply assembly 4, a second flange 6 is fixedly sleeved at the upper part of the fuel supply assembly 4, and an atomizing mixing assembly 7 is fixedly sleeved at the lower end of the tee 1.

[0027] In this embodiment, the atomizing mixing assembly 7 includes an atomizing mixing tube 71, an atomizing mixing spiral plate 72 fixedly sleeved inside the atomizing mixing tube 71, a mixing nozzle 73 fixedly connected to the lower end of the atomizing mixing tube 71, and the upper end of the atomizing mixing tube 71 fixedly sleeved together with the lower end of the tee 1; the mixing nozzle 73 is configured as a tapered structure that is wider at the top and narrower at the bottom; the air supply assembly 2 includes an air inlet pipe 21, a fixed cylinder 22 fixedly sleeved inside the air inlet pipe 21, a plurality of air diversion pipes 23 being inserted and fixedly connected to the right end of the fixed cylinder 22, and the right end of the air inlet pipe 21 being fixedly sleeved together with the left end of the tee 1; the plurality of air diversion pipes 23 are arranged in a ring around the center of the fixed cylinder 22. The array is distributed as follows: The fuel supply assembly 4 includes a fuel inlet pipe 41, with several T-shaped slots 42 on the upper part of the inner wall of the fuel inlet pipe 41. A fixed plate 43 is fixedly sleeved inside the lower part of the fuel inlet pipe 41. Several through-holes 44 are opened at the upper end of the fixed plate 43. The lower end of the fuel inlet pipe 41 is inserted and fixedly connected to the upper end of the tee 1. The filter assembly 5 includes a frame 51, with a filter screen 52 embedded in the lower part of the inner wall of the frame 51. Several T-shaped plates 53 are fixedly connected to the outer surface of the frame 51. The frame 51 is movably sleeved inside the fuel inlet pipe 41, and the several T-shaped plates 53 are movably sleeved in the corresponding several T-shaped slots 42.

[0028] It should be noted that this utility model is a gas turbine fuel atomization air mixing assembly. In use, the frame 51 of the filter assembly 5 is fitted into the fuel inlet pipe 41 of the fuel supply assembly 4 through several T-shaped clamps 53 and several T-shaped slots 42. The air supply assembly 2 is fixedly connected to the external compressed air pipeline through the first flange 3, and the fuel supply assembly 4 is fixedly connected to the external fuel delivery pipeline through the second flange 6, thus establishing an external supply path for fuel and air. External fuel enters from the fuel inlet pipe 41 and is filtered by the filter screen 52 on the lower part of the inner wall of the frame 51 to intercept impurities. After being filtered by the filter screen 52, the fuel flows to the fixed plate 43 and is dispersed into multiple fuel streams through several vertically penetrating fuel diversion holes 44 on the fixed plate 43. The fuel then flows into the tee 1. At the same time, external compressed air enters from the air supply assembly 2. The air enters through the air inlet pipe 21, passes through the fixed cylinder 22, and then passes through several air diversion pipes 23 arranged in a ring around the fixed cylinder 22. The air is then divided into multiple air streams and transported into the three-way valve 1. In the three-way valve 1, the multiple fuel streams and multiple air streams initially merge and then flow into the atomizing mixing pipe 71 of the atomizing mixing assembly 7. With the help of the atomizing mixing spiral plate 72 fixedly sleeved inside the atomizing mixing pipe 71, the fuel and air are fully contacted and mixed during the flow. At the same time, under the action of the spiral plate, a swirling flow is formed, which breaks the fuel into fine droplets. The fuel-air mixture after atomization and mixing is sprayed out through the mixing nozzle 73 with a tapered structure that is wider at the top and narrower at the bottom at the lower end of the atomizing mixing pipe 71 and enters the combustion chamber of the gas turbine to provide a uniformly mixed fuel-air mixture for combustion.

[0029] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A fuel atomizing air mixing assembly for a gas turbine, comprising a three-way valve (1), characterized in that: An air supply assembly (2) is fixedly sleeved on the left end of the tee (1), a first flange (3) is fixedly sleeved on the left side of the air supply assembly (2), a fuel supply assembly (4) is fixedly sleeved on the upper end of the tee (1), a filter assembly (5) is movably sleeved inside the fuel supply assembly (4), a second flange (6) is fixedly sleeved on the upper part of the fuel supply assembly (4), and an atomizing mixing assembly (7) is fixedly sleeved on the lower end of the tee (1). The atomizing mixing assembly (7) includes an atomizing mixing tube (71), an atomizing mixing spiral plate (72) is fixedly sleeved inside the atomizing mixing tube (71), a mixing nozzle (73) is fixedly connected to the lower end of the atomizing mixing tube (71), and the upper end of the atomizing mixing tube (71) is fixedly sleeved together with the lower end of the tee (1).

2. The gas turbine fuel atomizing air mixing assembly according to claim 1, characterized in that: The mixing nozzle (73) is configured as a tapered structure that is wider at the top and narrower at the bottom.

3. The gas turbine fuel atomizing air mixing assembly according to claim 1, characterized in that: The air supply assembly (2) includes an air inlet pipe (21), a fixed cylinder (22) is fixedly sleeved inside the air inlet pipe (21), and several air diversion pipes (23) are inserted and fixedly connected to the right end of the fixed cylinder (22). The right end of the air inlet pipe (21) is fixedly sleeved together with the left end of the tee (1).

4. A gas turbine fuel atomizing air mixing assembly according to claim 3, characterized in that: Several of the air splitters (23) are arranged in a ring array around the center of the fixed cylinder (22).

5. A gas turbine fuel atomizing air mixing assembly according to claim 1, characterized in that: The fuel supply assembly (4) includes a fuel inlet pipe (41). Several T-shaped slots (42) are opened on the upper part of the inner wall of the fuel inlet pipe (41). A fixed plate (43) is fixedly sleeved in the lower part of the fuel inlet pipe (41). Several fuel diversion holes (44) are opened on the upper end of the fixed plate (43). The lower end of the fuel inlet pipe (41) is inserted and fixedly connected to the upper end of the tee (1).

6. A gas turbine fuel atomizing air mixing assembly according to claim 5, characterized in that: The filter assembly (5) includes a frame (51), with a filter screen (52) embedded in the lower part of the inner wall of the frame (51), and a number of T-shaped plates (53) fixedly connected to the outer surface of the frame (51).

7. A gas turbine fuel atomizing air mixing assembly according to claim 6, characterized in that: The sleeve frame (51) is movably fitted inside the fuel inlet pipe (41), and several T-shaped clamps (53) are movably fitted inside the corresponding several T-shaped clamp slots (42).

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