Device for improving airflow at outlet of combustor

Abstract

The utility model discloses a device for improving combustor outlet airflow, which comprises a combustion cylinder and a plurality of guide vanes, the guide vanes are annularly distributed at intervals in the combustion cylinder and close to an air outlet, airflow passing through the combustion cylinder is uniformly separated through the guide vanes, the guide vanes are obliquely arranged, and the guide vanes are arranged in the combustion cylinder. Air flow passing through the combustion cylinder is changed into spiral air flow under the action of the guide vanes, several groups of air flow channels are established in the combustion cylinder through the guide vanes, the air flow of the combustor passes through the air flue and participates in combustion of the combustor according to the related rotation direction, and the air flow passing through the air flue can keep stable in direction. And meanwhile, the air volume and air speed uniformity of airflow at the air outlet of the combustor can be improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of combustor, concretely relates to a device for improving combustor outlet airflow. BACKGROUND

[0002] The combustor fan inevitably causes airflow turbulence under high speed state due to the interaction between fluids in the air blowing process, the current combustor combustion cylinder has no guide vane, and the airflow presents turbulence phenomenon when passing through the combustion cylinder, which leads to the problems of non-converging flame shape, insufficient combustion and one-sided flame. SUMMARY

[0003] In view of the above problems of the prior art, the utility model provides a device for improving combustor outlet airflow, which establishes several groups of airflow channels in the combustion cylinder by guide vanes, so that the combustor airflow passes through the air duct to participate in the combustion of the combustor according to the relevant rotation direction, the airflow passing through the air duct can maintain a stable direction, and the airflow volume, airflow speed uniformity at the combustor air outlet can be improved, the combustor flame shape can be converged, the flame can be located at the center, and the combustion efficiency of the combustor can be improved.

[0004] In order to achieve the above purpose, the utility model adopts the technical scheme of: a device for improving combustor outlet airflow, comprising: a combustion cylinder and guide vanes, a plurality of guide vanes are annularly and spacedly arranged in the combustion cylinder near the air outlet, the airflow passing through the combustion cylinder is uniformly separated by the guide vanes, the guide vanes are inclinedly arranged, so that the airflow passing through the combustion cylinder becomes spiral airflow under the action of the guide vanes, and the guide vanes have strong fluid flow permeability.

[0005] Further, the diameter of the air inlet of the combustion cylinder is smaller than the diameter of the air outlet.

[0006] Further, the air inlet and the air outlet of the combustion cylinder are in a horn shape.

[0007] Further, the guide vanes are arc-shaped, the upper arc of the arc-shaped guide vanes has an arc degree of 48-53°, and the lower arc of the arc-shaped guide vanes has an arc degree of 40-45°.

[0008] Further, the guide vanes are welded in the combustion cylinder near the air outlet at an angle of 55° offset from the center of the combustion cylinder.

[0009] The utility model has the advantages that several groups of airflow channels are established in the combustion cylinder by guide vanes, the combustor airflow passes through the air duct to participate in the combustion of the combustor according to the relevant rotation direction, the airflow passing through the air duct can maintain a stable direction, the airflow volume, airflow speed uniformity at the combustor air outlet can be improved, the combustor flame shape can be converged, the flame can be located at the center, and the combustion efficiency of the combustor can be improved.BRIEF DESCRIPTION OF DRAWINGS BRIEF DESCRIPTION OF DRAWINGS

[0010] Figure 1 is a schematic diagram of the shaft measurement structure of the utility model;

[0011] Figure 2 is Figure 1 a schematic diagram of the cross-sectional structure;

[0012] Figure 3 is a schematic diagram of the main structure of the guide vane;

[0013] In the figure: 1, combustion cylinder; 2, guide vane. DETAILED DESCRIPTION

[0014] In order to make the purpose, technical scheme and advantages of the utility model more clear and explicit, the utility model is further described in detail below through the drawings and examples. However, it should be understood that the specific examples described herein are only used to explain the utility model and are not used to limit the scope of the utility model.

[0015] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which the utility model belongs. The terminology used in the description of the utility model herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the utility model.

[0016] As Figures 1-2 shown, a device for improving the gas flow at the outlet of a burner, comprising: a combustion cylinder, a guide vane, a plurality of said guide vanes are annularly and spacedly distributed inside the combustion cylinder near the air outlet, the gas flow through the combustion cylinder is evenly divided by the guide vanes, the influence of the unstable gas flow caused by the interaction of the gas flow is reduced, the problems of the non-converging flame shape and the flame deviating to one side caused by the unstable gas flow are solved, the guide vanes are obliquely arranged, so that the gas flow through the combustion cylinder becomes spiral gas flow under the action of the guide vanes, and the guide vanes have strong fluid flow permeability.

[0017] A plurality of said guide vanes are arranged in at least one group of annularly and spacedly distributed vane groups, the vane groups can be 1, 2, 3, 4 or 6 groups, in the present example, the guide vanes in each vane group are arranged as 8 pieces, and the number can be increased or decreased according to needs, such as 4, 5, 6, 7, 8 or 9 guide vanes.

[0018] During the ignition process of the burner, most of the gas flow generated by the fan is close to the cylinder wall of the combustion cylinder, and the gas flow relies on the cylinder wall to shrink the burning flame.

[0019] The guide vane is similar in shape to a fan blade.

[0020] As Figures 1-2As shown in the figure, the diameter of the air inlet of the combustion cylinder is smaller than that of the air outlet.

[0021] As shown in the figure, the air inlet of the combustion cylinder is smaller than that of the air outlet. Figures 1-2 As shown in the figure, the air inlet of the combustion cylinder is smaller than that of the air outlet.

[0022] As shown in the figure, the air inlet of the combustion cylinder is smaller than that of the air outlet. Figures 1-3 As shown in the figure, the air inlet of the combustion cylinder is smaller than that of the air outlet.

[0023] As shown in the figure, the air inlet of the combustion cylinder is smaller than that of the air outlet. Figures 1-2 As shown in the figure, the air inlet of the combustion cylinder is smaller than that of the air outlet.

[0024] The above only describes the preferred embodiments of the present application and is not intended to limit the present application, and any modification, equivalent replacement or improvement made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A device for improving the flow of gas from a burner, characterized in that, Comprise: The combustion cylinder, the guide vane, a plurality of said guide vanes are annularly spaced apart in the combustion cylinder near the air outlet position, the air flow through the combustion cylinder is uniformly divided by the guide vane, the guide vane is inclined to set, and the air flow through the combustion cylinder becomes spiral air flow under the action of the guide vane; The diameter of the air inlet of the combustion cylinder is smaller than the diameter of the air outlet; The air inlet and the air outlet of the combustion cylinder are in a horn shape; The guide vane is arc-shaped, the upper arc of the arc is 48-53°, and the lower arc of the arc is 40-45°; The guide vane is welded in the combustion cylinder near the air outlet position at an angle of 55° offset from the center of the combustion cylinder.

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