Fuel mixing system of gas turbine

Abstract

The utility model provides a gas turbine fuel mixing system, which relates to the field of gas turbines, and comprises a mixing chamber, one end of the mixing chamber is connected and communicated with at least two groups of inlet pipes, the other end of the mixing chamber is provided with a discharge pipe, and a partition plate for dividing the mixing chamber into a labyrinth shape is arranged in the mixing chamber. According to the fuel mixing system of the gas turbine, different fuel gases are respectively introduced into the inlet pipes, and integrally flow in the mixing chamber according to the distribution direction of the partition plates, so that different fuels can be mixed, and in the mixing process, the fuel gases flow to drive the driving blades to rotate; the stirring blades can be driven to rotate, then stirring and mixing of different fuels are achieved, and due to different requirements for combustion heat values, different fuel gases need to be introduced into the mixing chamber according to different speeds, so that sufficient mixing is achieved.

Description

TECHNICAL FIELD

[0001] The utility model relates to gas turbine technical field, concretely is a gas turbine fuel mixing system. BACKGROUND

[0002] CN110748921B low heat value gas turbine's natural gas mixed burning device and method belong to gas turbine fuel mixing and method technical field. Its technical scheme is: natural gas main pipe is connected with blast furnace gas main pipe through natural gas pressure reducing adjusting device, coke oven gas main pipe is connected with blast furnace gas main pipe through coke oven gas processing adjusting device, blast furnace gas main pipe after being connected with natural gas main pipe and coke oven gas main pipe becomes mixed fuel main pipe, mixed fuel main pipe is connected with electric dust removal device and two-stage gas compressor, mixed fuel main pipe is connected with mixed fuel monitoring adjusting device after passing through gas compressor, the tail end of mixed fuel main pipe is connected with gas turbine. The technical scheme opens up a new way of thinking for the comprehensive utilization of secondary energy in steel enterprises, effectively reduces the excess gas emission of steel enterprises, at the same time reduces the cost, the benefit is improved, has remarkable economic benefit and social benefit, and has wide popularization value in the application field of low heat value gas turbine in steel enterprises. The technical scheme discloses that natural gas and coke oven gas are mixed for the combustion of gas turbine, but lacks the method of mixing two kinds of gas. SUMMARY

[0003] In view of the defects of the prior art, the utility model provides a gas turbine fuel mixing system, which solves the problem of insufficient mixing of multiple fuels.

[0004] TECHNICAL SCHEME

[0005] To achieve the above object, the utility model is realized by the following technical scheme: a gas turbine fuel mixing system, comprising a mixing chamber, at least two groups of inlet pipes are connected and penetrated at one end of the mixing chamber, an outlet pipe is arranged at the other end of the mixing chamber, and a partition plate is arranged inside the mixing chamber to divide the mixing chamber into a labyrinth type.

[0006] Further, the partition plate is parallel to the axis of the mixing chamber, and the two ends are respectively staggered and fixedly connected with the mixing chamber.

[0007] Further, the partition plate is perpendicular to the axis of the mixing chamber, and the adjacent partition plates are staggered and provided with notches.

[0008] Further, a rotating shaft is rotatably connected to the middle part of the mixing chamber, stirring blades are arranged between the adjacent partition plates, and a power source for driving the stirring blades to rotate is arranged at the control end of the rotating shaft.

[0009] Further, the rotating shaft is symmetrically divided into two sections, and the power source is arranged at one end of the rotating shaft away from each other.

[0010] Further, the power source comprises driving chambers arranged on both sides of the mixing chamber, and the rotating shaft is internally provided with driving blades fixedly arranged on the outer surface of the rotating shaft.

[0011] Further, the power source comprises motors fixedly arranged on both sides of the mixing chamber, and the output ends of the motors are connected with the rotating shaft.

[0012] The gas turbine fuel mixing system has the advantages that:

[0013] 1. The gas turbine fuel mixing system is characterized in that different fuel gases are respectively introduced into the inlet pipe, and the fuel gases flow in the mixing chamber according to the distribution direction of the partition plates, so that the different fuels are mixed, and in the mixing process, the fuel gas flow drives the driving blades to rotate, so as to drive the stirring blades to rotate, thereby realizing the stirring and mixing of different fuels.

[0014] 2. The gas turbine fuel mixing system is characterized in that the rotating shaft is symmetrically divided into two sections, and the power sources are arranged at the ends of the rotating shaft away from each other, so that the two ends can be stirred at different speeds. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 It is a structural schematic view of the utility model;

[0016] Figure 2 It is a motor connection schematic view of the utility model;

[0017] Figure 3 It is a vertical partition plate arrangement schematic view of the utility model;

[0018] Figure 4 It is a horizontal partition plate arrangement schematic view of the utility model.

[0019] 1. mixing chamber; 2. inlet pipe; 3. outlet pipe; 4. partition plate; 5. notch; 6. rotating shaft; 7. stirring blade; 8. power source; 801. driving chamber; 802. driving blade; 803. motor. DETAILED DESCRIPTION

[0020] Clearly, the described embodiments are merely a part of the embodiments of the present application, but not all the embodiments. Based on the embodiments of the present application, all the other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the present application.

[0021] Referring to Figures 1-4 The gas turbine fuel mixing system comprises a mixing chamber 1, at least two groups of inlet pipes 2 connected to one end of the mixing chamber 1 and penetrating through the mixing chamber 1, an outlet pipe 3 arranged at the other end of the mixing chamber 1, and baffles 4 arranged inside the mixing chamber 1 to divide the mixing chamber 1 into a labyrinth type. The baffles 4 arranged in the labyrinth type can increase the residence time of different fuels in the mixing chamber 1, so that the mixing time of the multiple fuels can be increased.

[0022] The baffles 4 are parallel to the axis of the mixing chamber 1 and are fixedly connected to the mixing chamber 1 at both ends in a staggered manner. The technical scheme can increase the fuel mixing time.

[0023] The baffles 4 are perpendicular to the axis of the mixing chamber 1, and gaps 5 are arranged between adjacent baffles 4 in a staggered manner. In this way, space is reserved between the adjacent baffles 4 to facilitate subsequent stirring and mixing.

[0024] A rotating shaft 6 is rotatably connected to the middle of the mixing chamber 1, stirring blades 7 are arranged between the adjacent baffles 4, a power source 8 is arranged at the control end of the rotating shaft 6 to drive the stirring blades 7 to rotate, and the stirring blades 7 are arranged to rotate between the adjacent baffles 4, so that the different fuels can be fully mixed.

[0025] The rotating shaft 6 is symmetrically divided into two sections, and the power source 8 is arranged at one end of the rotating shaft 6 away from each other. In this way, different stirring speeds can be achieved at the two ends.

[0026] The power source 8 comprises drive chambers 801 arranged on both sides of the mixing chamber 1, drive blades 802 fixedly installed on the outer surface of the rotating shaft 6 inside the drive chambers 801, and the inlet pipes 2 first connected to the drive chambers 801 and then connected to the mixing chamber 1. In this way, the stirring speed can be adjusted according to the air volume.

[0027] The power source 8 comprises motors 803 fixedly installed on both sides of the mixing chamber 1, and the output ends of the motors 803 are connected to the rotating shaft 6. In this way, the rotation speed of the rotating shaft 6 can be directly adjusted by using the motors 803, and different mixing speeds can be adjusted.

[0028] In use, first, different fuel gases are respectively introduced into the inlet pipe 2, and flow in the mixing chamber 1 according to the distribution direction of the partition plate 4, so that the different fuels can be mixed, in the mixing process, the driving blades 802 are driven to rotate by the fuel gas flow, so that the stirring blades 7 are driven to rotate, and then the stirring and mixing of different fuels are realized. Due to different requirements for combustion heat value, different fuel gases need to be introduced into the mixing chamber 1 at different speeds, when the introduction speed is slow, the stirring speed will also decrease, therefore, the motor 803 is arranged to drive the stirring blades 7 to rotate, so as to realize sufficient mixing.

[0029] It should be noted that the relational terms herein such as first and second and the like are used solely to distinguish one from another entity or action without necessarily requiring or implying any actual relationship or order between such entities or actions.

[0030] The above is only a preferred specific embodiment of the present application, but the protection scope of the present application is not limited to this, any skilled person in the art can make equivalent replacement or change according to the technical scheme and the inventive concept of the present application within the technical range disclosed by the present application, which should be covered in the protection scope of the present application.

Claims

1. A gas turbine fuel mixing system comprising a mixing chamber (1), characterised in that: One end of the mixing chamber (1) is connected and penetrates at least two groups of inlet pipes (2), the other end of the mixing chamber (1) is provided with an outlet pipe (3), the inside of the mixing chamber (1) is provided with a partition (4) which divides the mixing chamber (1) into a labyrinth type.

2. A gas turbine fuel mixing system according to claim 1, characterised in that: The partition (4) is parallel to the axis of the mixing chamber (1), and the two ends are staggered and fixedly connected with the mixing chamber (1) respectively.

3. A gas turbine fuel mixing system in accordance with claim 1 characterized by: The partition (4) is perpendicular to the axis of the mixing chamber (1), and the adjacent partitions (4) are staggered and provided with notches (5) between them.

4. A gas turbine fuel mixing system according to claim 3, characterised in that: The middle part of the mixing chamber (1) is rotatably connected with a rotating shaft (6), the rotating shaft (6) is provided with stirring blades (7) between the adjacent partitions (4), and the control end of the rotating shaft (6) is provided with a power source (8) for driving the stirring blades (7) to rotate.

5. A gas turbine fuel mixing system according to claim 4, characterised in that: The rotating shaft (6) is symmetrically divided into two sections, and the power source (8) is arranged at the ends of the rotating shaft (6) away from each other.

6. A gas turbine fuel mixing system according to claim 4 or 5, characterised in that: The power source (8) includes drive chambers (801) arranged on both sides of the mixing chamber (1), the outer surface of the rotating shaft (6) located in the drive chamber (801) is fixedly installed with driving blades (802), and the inlet pipe (2) is first connected with the drive chamber (801) and then communicated with the mixing chamber (1).

7. A gas turbine fuel mixing system according to claim 6, characterised in that: The power source (8) includes a motor (803) fixedly installed on both sides of the mixing chamber (1), and the output end of the motor (803) is connected with the rotating shaft (6).

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