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CN-121977228-A - Integrated support plate stabilizer with adjustable external splash prevention and atomization function and adjusting method thereof

CN121977228ACN 121977228 ACN121977228 ACN 121977228ACN-121977228-A

Abstract

The invention discloses an integrated support plate stabilizer with adjustable outer splash atomization, which comprises a main support plate, splash baffle plates, a main wing side telescopic connecting rod, a flap side telescopic connecting rod and a driving unit. The splash baffle plate has the functions of local rectification and splash baffle reflection on the fuel oil on the side of the main support plate, is distributed on two sides of the main support plate, and can dynamically adjust the relative position of the splash baffle plate from the main support plate and the angle between the main wing and the flap. The invention can improve the non-uniformity of the spread direction distribution of the side spraying oil supply, improve the atomization fineness of the fuel oil through wall splash, and dynamically adjust under different liquid-gas momentum ratio working conditions so as to fully exert the flameout combustion performance of the integrated support plate flame stabilizer. The invention also provides an adjusting method of the integrated support plate stabilizer.

Inventors

  • LIU YUYING
  • LI BAOZHONG
  • LIU GUANGHAI

Assignees

  • 北京航空航天大学

Dates

Publication Date
20260505
Application Date
20260316

Claims (10)

  1. 1. An integrated strip stabilizer with adjustable outer splash atomization, comprising: The main support (1) is provided with a cavity shell structure, the inside of the main support is divided into a front edge chamber (101) and a tail edge chamber (102) by a partition plate (103), an auxiliary air pipe (3) and an oil injection rod (4) are arranged in the front edge chamber (101), a side wall reserved hole (104) is formed in the circumferential side wall of the front edge chamber (101), the auxiliary air pipe (3) is close to the front part of the front edge chamber (101) and is provided with a forward auxiliary air hole (301), the two oil injection rods (4) are close to the side wall of the front edge chamber and are provided with an outward oil injection hole (401), and the oil injection hole (401) is opposite to the side wall reserved hole (104); The splash baffle plates (2) are symmetrically arranged on the circumferential outer side of the front edge chamber (101), a gap is formed between the splash baffle plates and the circumferential side wall of the main support plate (1), the splash baffle plates comprise main wings (201) and flaps (202) which are mutually hinged, and the outer sides of the side wall reserved holes (104) are opposite to the flaps (202); A main wing side telescopic connecting rod (5), one end of which passes through a reserved channel of the main support plate (1) and is connected with the pressure surface of the main wing (201), and the other end of which extends into the front edge chamber (101); a flap-side expansion link (6) having one end passing through a pre-groove of the main support (1) and connected to a pressure surface of the flap (202) and the other end extending into the interior of the leading edge chamber (101), and And a driving unit configured to drive the main wing side telescopic link (5) and/or the flap side telescopic link (6) to translate along the circumferential direction.
  2. 2. The integrated fulcrum stabilizer with adjustable external splash atomization according to claim 1, characterized in that the main wing side telescopic link (5) is rigidly connected to the main wing (201), the flap side telescopic link (6) is hinged to the flap (202).
  3. 3. The integrated baffle stabilizer with adjustable external splash atomization of claim 1, wherein the drive unit comprises: a main wing side flat action actuating rod (7) extending into the front edge chamber (101) from the radial outer side of the main support plate (1) and hinged with the main wing side telescopic connecting rods (5) at two sides; A flap-side flat-motion actuating lever (8) extending from the radially outer side of the main support plate (1) into the leading edge chamber (101) and hinged to the flap-side extension links (6) on both sides, and The actuator cylinder is arranged outside a diverting ring (10) on the radial outer side of the main support plate (1) and is configured to drive the main wing side translational motion actuating rod (7) and/or the flap side translational motion actuating rod (8) to translate along the axial direction, so as to drive the main wing side telescopic connecting rod (5) and/or the flap side telescopic connecting rod (6) to translate along the circumferential direction.
  4. 4. The integrated baffle stabilizer with adjustable external splash atomization according to claim 1, characterized in that the axial length of the splash wing plate (2) is 1/4-1/3 of the axial length of the main support plate (1), the hinge position of the main wing (201) and flap (202) being located at 50-60% of the axial length of the splash wing plate (2).
  5. 5. The integrated support plate stabilizer with the adjustable outer splash atomization function according to claim 1, wherein the separation plate (103) is provided with a plurality of small holes, cambered surface transition is arranged at a position connected with the side wall of the main support plate (1), a filling oil supply rod is arranged in the tail edge chamber (102), a filling oil supply hole is formed in the filling oil supply rod, and tail edge reserved holes are formed in two circumferential side walls of the tail edge chamber (102).
  6. 6. A method of adjusting an integrated baffle stabilizer with adjustable external splash atomization according to any one of claims 1-5, comprising the steps of: The main wing side telescopic connecting rod (5) and the flap side telescopic connecting rod (6) are driven to retract or extend outwards by the same amplitude, so that the distance between the splash baffle plate (2) and the main support plate (1) is adjusted on the premise of keeping the included angle between the main wing (201) and the flap (202).
  7. 7. The method for adjusting an integrated stay stabilizer with adjustable splash atomization according to claim 6, wherein the main wing side telescopic link (5) and the flap side telescopic link (6) are driven to retract under the condition of increasing incoming flow Mach number or decreasing fuel supply amount, and the main wing side telescopic link (5) and the flap side telescopic link (6) are driven to extend under the condition of decreasing incoming flow Mach number or increasing fuel supply amount.
  8. 8. The method for adjusting an integrated stay stabilizer with adjustable outer splash atomization according to claim 7, wherein the range of the distance n between the splash guard (2) and the main stay (1) during the retraction or extension of the main wing side telescopic link (5) and the flap side telescopic link (6) satisfies the formula: wherein a, b and c are fitting coefficients of the transverse jet penetration tracks respectively, q is a momentum ratio of fuel liquid to main gas path inflow, dj is the diameter of the oil spray hole (401), and m is an axial distance from an outlet of the oil spray hole (401) to the tail edge of the splash wing plate (2).
  9. 9. The method of adjusting an integrated fulcrum stabilizer with adjustable external splash atomization of claim 6, further comprising the steps of holding one of the main wing side extension link (5) and the flap side extension link (6) stationary and driving the other of the main wing side extension link (5) and the flap side extension link (6) to retract or extend to adjust the angle between the main wing (201) and the flap (202).
  10. 10. The method for adjusting the integrated support plate stabilizer with the adjustable outer splash atomization according to claim 9, wherein an included angle between the main wing (201) and the flap (202) is adjusted according to an incoming flow Mach number and fuel supply amount, so that the flap (202) forms 0-15 degrees with an incoming flow direction, and transverse jet flow sprayed from the side wall reserved hole (104) can be sputtered to the flap (202).

Description

Integrated support plate stabilizer with adjustable external splash prevention and atomization function and adjusting method thereof Technical Field The disclosure relates to the technical field of aircraft engine afterburners, in particular to an integrated support plate stabilizer with adjustable external splash atomization and an adjusting method thereof. Background With the continuous improvement of thrust-weight ratio of an aeroengine, in order to meet the working requirements of the aeroengine in normal and extreme working conditions in the flight process, a key component of the aeroengine for greatly increasing thrust, namely an afterburner, is also required to continuously reduce axial length and size and improve the ignition and flameout and combustion performance of the afterburner. Based on the development requirement of increasingly compact structures, the design of the new-generation afterburner combines the rear bearing support plate of the traditional turbine component with the afterburner flame stabilizer and the oil supply device, namely, the rectifying support plate, the flame stabilizer and the oil injection rod are integrally designed to different degrees, so that the problems that the oil injection rod is exposed to high temperature coking in a main stream and the like are solved, the stability and reliability of the oil supply device are ensured, and the length of an edge part of the afterburner can be effectively shortened to improve the thrust-weight ratio of an engine. However, integrated designs also present challenges. In terms of oil injection and stabilization integrated support plates, an oil supply strategy widely adopted at present is that an oil injection rod directly carries out transverse jet injection and carries out combustion through mixing with a main flow. However, the fuel atomization mode from the direct transverse jet flow to the main flow can lead to quite uneven concentration distribution of the fuel in the spreading direction on one hand, and can lead to deeper penetration depth of the fuel on the other hand, thereby being unfavorable for the process of carrying out on-duty ignition in a backflow area after the fuel is sucked into the tail edge of the integrated support plate along the wall surface of the support plate. And few splash-proof wall designs of the integrated support plate are built in, the splash-proof atomization mode of the integrated support plate does not fully utilize main stream high-temperature gas to perform atomization evaporation, and the scheme for dealing with dynamic change of working conditions is lacking. Therefore, the mode that the transverse jet flow sprayed by the existing oil spraying rod directly carries out single-stage atomization with the main flow and the design of a single fixed splash-preventing wall surface of the integrated support plate limit the further improvement of the flame stability of the flame stabilizer of the integrated support plate, and the dynamic adjusting capability of ensuring the flame stability performance under variable working conditions is lacking. Disclosure of Invention Aiming at the technical problems, the invention aims to provide an integrated support plate stabilizer with adjustable external splash prevention and atomization and an adjusting method thereof, which can improve the uniformity of the spread direction fuel concentration distribution of transverse jet flow and further improve the fineness of fuel through a multi-stage atomization mode. The invention can also dynamically adjust the splash surface position according to the change of working condition parameters to improve the flameout performance of the integrated support plate flame stabilizer and the flame stabilizing performance when on duty/small-stress oil supply is carried out. In one aspect of the invention, there is provided an integrated strip stabilizer with adjustable outer splash atomization comprising: The main support is provided with a cavity shell structure, the inside of the main support is divided into a front edge cavity and a tail edge cavity by a partition plate, an auxiliary air pipe and an oil injection rod are arranged in the front edge cavity, a side wall reserved hole is formed in the circumferential side wall of the front edge cavity, the auxiliary air pipe is close to the front part of the front edge cavity and is provided with a forward auxiliary air hole, two oil injection rods are close to the side wall of the front edge cavity and are provided with outward oil injection holes, and the oil injection holes are opposite to the side wall reserved holes; The splash baffle plates are symmetrically arranged on the circumferential outer side of the front edge chamber, a gap is formed between the splash baffle plates and the circumferential side wall of the main support plate, the splash baffle plates comprise main wings and flap plates which are mutually hinged, and the outer sides of the reserved holes of the