CN-122015129-A - Adjustable blending stabilizer structure, control method and afterburner applied to same

Abstract

The invention relates to the technical field of aeroengines and discloses an adjustable blending stabilizer structure, a control method and an applied afterburner, wherein the adjustable blending stabilizer structure comprises a stabilizer main body, an air entraining cover plate and a first driving mechanism, when a duct is relatively large, the first driving mechanism is controlled to drive the air entraining cover plate to rotate along a hinge shaft so as to increase the throttling area of a blending channel, increase the cooling air flow through the blending channel, reduce the cooling air flow of a heat shield, thereby increasing the content of oxygen in a connotation and improving the combustion efficiency of the afterburner, when the duct is relatively small, the first driving mechanism is controlled to drive the air entraining cover plate to rotate along the hinge shaft so as to reduce the throttling area of the blending channel, reduce the cooling air flow through the blending channel, increase the cooling air flow of the heat shield, ensure the cooling air flow and ensure the relative cooling air flow entering the heat shield to be within a stable and controllable range, and meet the safety operation requirement of the afterburner.

Inventors

• HE JIN
• XU XINWEN
• Wan chenhao
• WANG YAJUN
• WANG CHENGQI
• LIU YUCHEN
• WANG JIANGUO
• LIN JIANFU
• WU XIAOFEI
• ZHANG XUN

Assignees

• 中国航发四川燃气涡轮研究院

Dates

Publication Date

20260512

Application Date

20260128

Claims (8)

1. 1. An adjustable blending stabilizer structure, characterized by comprising the following steps: The stabilizer comprises a stabilizer main body (2), wherein the stabilizer main body (2) is of a V-shaped structure, and the V-shaped structure is arranged in an inner channel (7) between a flow distribution ring (5) and an inner cone (9) of the afterburner in the radial direction, and comprises a first support plate (201) and a second support plate (202) which are arranged in the radial direction of the afterburner; the air entraining cover plate (1), the air entraining cover plate (1) is movably arranged on the V-shaped structure cone position hinge shaft (11); the first driving mechanism is used for driving the air entraining cover plate (1) to rotate along the V-shaped structure cone position hinge shaft (11) so as to adjust the flow area of the mixing channel (10) on the flow dividing ring (5) through the air entraining cover plate (1).
2. 2. The adjustable blending stabilizer structure according to claim 1, characterized in that the first and second struts (201, 202) are hinged in a V-shaped structure cone position.
3. 3. The adjustable blending stabiliser structure according to claim 2, characterized in that the bleed cover plate (1) is fixed to the outer end face of the first support plate (201) or the second support plate (202).
4. 4. The adjustable blending stabilizer structure according to claim 2, further comprising a second driving structure for driving the first support plate (201) and the second support plate (202) of the V-shaped structure to rotate about the cone-position hinge shaft (11) of the V-shaped structure, respectively.
5. 5. The adjustable blending stabiliser structure according to claim 1, characterized in that the blending channel (10) is a fan-shaped structure, the bleed cover plate (1) is also a fan-shaped structure, and the vertices of the fan-shaped structures of the blending channel (10) and the bleed cover plate (1) are both located on the centerline of the cone-shaped hinge (11) of the V-shaped structure.
6. 6. A method of controlling an adjustable blend stabilizer structure, the method being based on an adjustable blend stabilizer structure according to any one of claims 1-5, comprising: When the bypass ratio of the afterburner is greater than a first threshold value, the first driving mechanism drives the air entraining cover plate (1) to rotate so as to increase the flow area of the mixing channel (10) and increase the cooling air flow through the mixing channel (10); When the bypass ratio is smaller than a second threshold value, the driving mechanism drives the air entraining cover plate (1) to rotate, so that the flow area of the mixing channel (10) is reduced, and the cooling air flow passing through the mixing channel (10) is reduced.
7. 7. The method for controlling the adjustable blending stabilizer structure according to claim 6, wherein the first support plate (201) and the second support plate (202) are hinged at a cone position of the V-shaped structure, and when the flow loss of the inner channel (7) is greater than a third threshold value, the second driving mechanism is used to drive the first support plate (201) or the second support plate (202) to rotate so as to reduce the included angle of the V-shaped structure.
8. 8. Afterburner, characterized in that it has an adjustable blending stabilizer structure according to any one of claims 1-5.

Description

Adjustable blending stabilizer structure, control method and afterburner applied to same Technical Field The invention relates to the technical field of aero-engines, and discloses an adjustable blending stabilizer structure, a control method and an applied afterburner. Background The variable cycle engine has obvious comprehensive performance advantage in the supersonic speed and subsonic speed mixed flight task. The engine is reduced in bypass ratio during climbing, accelerating and supersonic speed flight to make the performance of the engine approximate to that of a turbojet engine so as to increase thrust, and the bypass ratio is increased during taking off and subsonic speed flight to make the engine work in a turbofan engine state so as to reduce fuel consumption and noise. The pneumatic adjustable blending stabilizer structure on the variable cycle engine is numerous, and the adjustable blending stabilizer structure related to the afterburner is mainly used for adjusting the external air to redistribute cooling air flow and blending combustion. When the engine bypass ratio is changed and is larger than the designed bypass ratio, the adjusting device is opened to enable part of external air to enter the bypass through the adjusting device, so that the relative cooling air quantity entering the cooling channel is reduced, but the throttling area entering the heat shield cooling channel is unchanged, the absolute cooling air inflow is increased, when the cooling air quantity is larger than cooling air, the cooling air is excessive, the combustion efficiency of the afterburner is reduced, and the fuel consumption rate of the aeroengine is increased. Disclosure of Invention The invention aims to provide an adjustable blending stabilizer structure, a control method and an afterburner applied to the adjustable blending stabilizer structure, which can ensure that the relative cold air quantity entering a heat shield is within a stable and controllable range and meet the safety operation requirement of the afterburner. In order to achieve the technical effects, the technical scheme adopted by the invention is as follows: An adjustable blending stabilizer structure comprising: The stabilizer body is of a V-shaped structure, and the V-shaped structure is arranged in an inner channel between a flow dividing ring and an inner cone of the afterburner in the radial direction; the air entraining cover plate is movably arranged on the hinge shaft at the cone position of the V-shaped structure; The first driving mechanism is used for driving the air entraining cover plate to rotate along the V-shaped structure cone position hinge shaft so as to adjust the flow area of the mixing channel on the diverter ring through the air entraining cover plate. Further, the first support plate and the second support plate are hinged at the cone position of the V-shaped structure. Further, the air entraining cover plate is fixed on the outer end face of the first support plate or the second support plate. Further, the device also comprises a second driving structure for respectively driving the first support plate and the second support plate of the V-shaped structure to rotate by taking the hinge shaft at the cone position of the V-shaped structure as a central shaft. Further, the blending channel is of a fan-shaped structure, the air entraining cover plate is of a fan-shaped structure, and the peaks of the fan-shaped structures of the blending channel and the air entraining cover plate are both positioned on the central line of the hinge shaft at the cone position of the V-shaped structure. In order to achieve the technical effects, the invention also provides a control method of the adjustable blending stabilizer structure, which is based on the adjustable blending stabilizer structure and comprises the following steps: When the bypass ratio of the afterburner is greater than a first threshold value, the first driving mechanism drives the air entraining cover plate to rotate so as to increase the flow area of the mixing channel and increase the cooling air flow through the mixing channel; when the bypass ratio is smaller than a second threshold value, the driving mechanism drives the air entraining cover plate to rotate, so that the flow area of the mixing channel is reduced, and the cooling air flow passing through the mixing channel is reduced. Further, the first support plate is hinged to the second support plate at the conical position of the V-shaped structure, and when the flow loss of the inner channel is larger than a third threshold value, the second driving mechanism is used for driving the first support plate or the second support plate to rotate so as to reduce the included angle of the V-shaped structure. To achieve the above technical result, the present invention also provides an afterburner having the adjustable blending stabilizer structure described. Compared with the prior art, the invention has the beneficial