Oil-gas cooperative control integrated support plate

Abstract

The integrated supporting plate mainly comprises a compressible oil pipe, a control plate and an adjusting unit, and the adjusting unit can synchronously adjust the control plate to open a gas supply channel when the compressible oil pipe supplies oil and synchronously adjust the control plate to close the gas supply channel when the compressible oil pipe stops supplying oil. By means of the oil pressure transmission device arranged in the supporting plate and the gas-liquid two-phase jetting mode, the functions that a gas jetting channel is adjustable and a backflow area is formed can be achieved, the flow loss problem caused by the flame stabilizer is relieved, and the good pneumatic effect and the excellent flame stabilizing effect are achieved at the same time. Meanwhile, the supporting plate is integrated with the structural functions of a fuel oil spraying pipe and a flame stabilizer, and weight reduction optimization of the structure is effectively achieved through the integrated supporting plate structural layout.

Description

TECHNICAL FIELD

[0001] The present disclosure relates to the technical field of aircraft engine afterburner, and particularly relates to an oil-gas synergic control integrated strut. BACKGROUND

[0002] The afterburner of an aircraft engine is usually only turned on when the aircraft needs to make a maneuvering action, such as providing a large thrust for a short time during take-off, climbing, accelerating, chasing, etc., and is in a non-working state during the cruising state which occupies the majority of working conditions, so in the process of structural design of the afterburner, researchers hope that it has good flame stabilization ability when it is turned on to ensure ignition and stable combustion in a working environment with high flow rate and low oxygen content, and also hope that it brings smaller flow resistance and total pressure loss when it is not working.

[0003] However, the outstanding flame stabilization effect means that the internal structure of the afterburner can effectively block the high-speed incoming flow and form a stable recirculation zone downstream, and the good aerodynamic effect means that the internal structure of the afterburner has a more optimal aerodynamic shape and lower flow resistance, obviously the two are contradictory engineering requirements, which are difficult to balance in the traditional afterburner.

[0004] In view of the technical problem, researchers mainly start from the flame stabilizer in the afterburner at present, and propose the aerodynamic flame stabilizer technology and the flame stabilizer slot width adjustable technology. The aerodynamic flame stabilizer technology forms a recirculation zone by injecting high-speed airflow into the main flow to stabilize and organize combustion; the basic principle of the flame stabilizer slot width adjustable technology is to realize adaptability in aerodynamics and flame stabilization by dynamically adjusting the windward area of the flame stabilizer. However, some aerodynamic flame stabilizers need to take high-pressure air from the engine compressor for forming an aerodynamic barrier, which undoubtedly reduces the amount of air entering the combustion chamber for combustion and heating and doing work on the turbine, and further adversely affects the overall performance of the engine. The flame stabilizer slot width adjustable technology can reduce flow loss in the non-afterburning state by adjusting the slot width and blockage ratio using oil pressure, but the flame stabilizer structure still has a large flow loss, and the weight problem of the flame stabilizer has not been effectively optimized. SUMMARY

[0005] In view of the above technical problems, the present patent proposes an oil-gas synergic control integrated strut, which integrates the functions of the fuel nozzle and the flame stabilizer into the strut structure, and adopts a two-phase injection mode of oil-gas synergic control, which can alleviate the flow loss problem caused by the flame stabilizer component, and extract the outer bypass air of the afterburner section by means of supercharging, avoiding the occupation of the inner bypass air participating in doing work, and overall improving the efficiency and thrust of the aircraft engine, while using the integrated strut to realize good aerodynamic effect in the non-working state and excellent flame stabilization effect in the working state.

[0006] The present application provides an integrated strut for oil and gas cooperative control, characterized in that the integrated strut is a cavity structure, and is communicated with an outer duct through an air guide channel arranged at the top, and the integrated strut comprises:

[0007] a compressible oil pipe arranged inside the integrated strut and spraying oil outside the strut through a plurality of oil nozzles;

[0008] a control plate comprising a first part corresponding to the compressible oil pipe, and a second part capable of controlling opening or closing of a side gas outlet channel on the upper side of the integrated strut; and

[0009] an adjusting unit arranged between the compressible oil pipe and the first part, configured to adjust the control plate to open the side gas outlet channel to the second part when the compressible oil pipe is in an oil supply state, and to adjust the control plate to close the side gas outlet channel to the second part when the compressible oil pipe is in a non-oil supply state.

[0010] Preferably, the adjusting unit comprises:

[0011] a fixing ring sleeved outside the compressible oil pipe;

[0012] a blocking block arranged inside the fixing ring and attached to a side of the compressible oil pipe away from the oil nozzles;

[0013] a positioning pin passing through an opening on the fixing ring and connected between the blocking block and the first part; and

[0014] a first spring sleeved outside the positioning pin, in a compressed state and arranged between the blocking block and the fixing ring, or in an expanded state and arranged between the first part and the fixing ring.

[0015] Preferably, the compressible oil pipe has a circular cross section, the fixing ring comprises a circular arc wall surface attached to a side of the compressible oil pipe away from the control plate, and in a cross section perpendicular to the length direction of the integrated strut, the blocking block has a trapezoidal cross section with a bottom attached to the compressible oil pipe.

[0016] Preferably, a side wall of the fixing ring parallel to the extension direction of the first spring is a flat wall surface, and the first part comprises a guide wall surface attached to the outside of the flat wall surface.

[0017] Preferably, the adjusting unit further comprises a second spring sleeved outside the positioning pin, with one end hanging and the other end fixedly arranged on one of two surfaces of the blocking block opposite to the fixing ring, or on one of two surfaces of the fixing ring opposite to the first part.

[0018] Preferably, the inner wall surface of the integrated strut is provided with a groove, the range of the groove covers the side gas outlet channel, and the second part can be embedded in the groove and close the side gas outlet channel.

[0019] Preferably, the bleed channel is configured such that the cross-sectional area gradually increases along the depth direction, and the ratio of the outlet cross-sectional area to the inlet cross-sectional area is greater than the ratio of the outer duct airflow pressure at the inlet of the bleed channel to the inner duct airflow pressure outside the side gas outlet channel; the bottom of the integrated strut is also provided with a bottom opening, and the overflow plate opens outward in a single direction, the threshold pressure of the overflow plate opening is greater than the inner duct airflow pressure and less than the pressure at the maximum cross-sectional area of the bleed channel.

[0020] Preferably, the compressible oil pipe is at least two, and at least two of the compressible oil pipes are connected to each other inside the integrated strut.

[0021] Preferably, the control plate includes at least one first part and at least one second part, and the first part and the second part are staggered with each other.

[0022] Preferably, in the length direction of the integrated strut, a plurality of oil nozzles are distributed on both sides of the side gas outlet channel on the wall surface of the integrated strut.

[0023] Based on the above technical scheme, the strut supporting between the nozzle and the center cone is taken as the design focus, the structure and function of the fuel injection nozzle and the flame stabilizer are integrated, the lightweight integrated strut structure layout is matched, the oil pressure transmission device arranged in the strut and the gas-liquid two-phase injection mode are matched, the functions of the injection channel adjustment and the backflow area formation are realized, the flow loss problem caused by the flame stabilizer is relieved, and the good aerodynamic effect and excellent flame stabilization effect are realized. BRIEF DESCRIPTION OF DRAWINGS

[0024] Figure 1 The cross-sectional structure schematic diagram of an embodiment of an integrated strut for oil-gas collaborative control provided by the present application in a thrust state;

[0025] Figure 2 The cross-sectional structure schematic diagram of another embodiment of an integrated strut for oil-gas collaborative control provided by the present application in a non-thrust state;

[0026] Figure 3 The structure schematic diagram of the side gas outlet channel of an integrated strut for oil-gas collaborative control provided by the present application when the side gas outlet channel is a side opening;

[0027] Figure 4A structure schematic view of a side gas outlet channel of an integrated support plate for oil-gas cooperative control provided by the present application is a side gas slit;

[0028] Figure 5 A structure schematic view of an adjusting unit and compressible oil pipe of an integrated support plate for oil-gas cooperative control provided by the present application;

[0029] Figure 6 A control plate structure schematic view of an integrated support plate for oil-gas cooperative control provided by the present application;

[0030] In the figure:

[0031] 1-control plate, 11-first part, 12-second part, 2-positioning pin, 3-fixing ring, 4-compressible oil pipe, 41-oil nozzle, 5-plug, 61-air injection channel, 62-side gas outlet channel, 63-bottom opening, 7-groove, 81-first spring, 82-second spring. DETAILED DESCRIPTION

[0032] The technical solutions of the present application are further described in detail below in combination with the drawings:

[0033] The present application can be realized in many different forms and should not be considered limited to the embodiments described here. These embodiments are provided so that the disclosure is complete and thorough and fully conveys the scope of the present application to those skilled in the art.

[0034] As Figures 1-6As shown, the present application provides an integrated strut with oil-gas synergic control, which has an airfoil-shaped outer contour, and can greatly reduce the total pressure loss of the incoming flow in non-afterburning conditions in its streamlined form. The integrated strut is internally hollow, which can greatly reduce its weight, and provide sufficient space for the internally arranged compressible oil pipe 4, control plate 1 and adjustment unit, so that the strut integrates the functions of other components into one. The integrated strut is in communication with the outer duct through the bleed air passage 61 arranged on the top, and the air inlet of the bleed air passage 61 is located in the outer duct. Thus, the outer duct air with lower temperature will enter the hollow structure of the integrated strut through the bleed air passage 61, so as to cool the integrated strut and the many components arranged inside, especially the cooling of the compressible oil pipe 4 can significantly inhibit the coking of the fuel in the oil pipe. The wall surface of the integrated strut is provided with many side air outlet passages 62, and in the afterburning condition, air will be injected into the inner duct from the side air outlet passages 62, so as to achieve an effect similar to a pneumatic flame stabilizer, and use the ejected gas to generate a larger equivalent windward area to block the incoming flow, so as to realize the construction of the backflow area behind the strut. Moreover, the process of cooling the strut by the outer duct air also synchronously realizes the preheating of the outer duct cold air introduced into the integrated strut, so that this part of air enters the inner duct area through the side air outlet passages 62 on the integrated strut to participate in combustion at a higher temperature, thereby improving the stability of afterburning.

[0035] As shown, Figures 1-2 The compressible oil pipe 4 is fixedly arranged in the inside of the integrated strut, and sprays oil to the outside of the strut through a plurality of oil nozzles 41. The control plate 1 is arranged on the inner side of the compressible oil pipe 4, which includes a first part 11 corresponding to the compressible oil pipe 4, and a second part 12 capable of controlling the opening or closing of the side air outlet passages 62 on the integrated strut. The adjustment unit is arranged between the compressible oil pipe 4 and the first part 11, which is configured to adjust the control plate 1 to the second part 12 to open the side air outlet passages 62 when the compressible oil pipe 4 is in the oil supply state, and adjust the control plate 1 to the second part 12 to close the side air outlet passages 62 when the compressible oil pipe 4 is in the non-oil supply state. Thus, the oil-gas two-phase of the integrated strut will be synergically controlled: in the afterburning state, the oil supply system will supply oil to the compressible oil pipe 4, and the oil pressure of the compressible oil pipe 4 will be transmitted to the control plate 1 through the adjustment unit, so that the control plate 1 no longer closely fits the side wall of the integrated strut to open the side air outlet passages 62. At this time, the fuel and air will respectively leave the integrated strut through the oil nozzles 41 and the side air outlet passages 62 to enter the inner duct area to organize combustion, so as to meet the afterburning thrust demand of the aero-engine; and in the non-afterburning state, the oil supply system stops supplying oil, and the adjustment unit can no longer receive the oil pressure signal of the compressible oil pipe 4. At this time, the control plate 1 will re-adhere to the side wall of the integrated strut to close the side air outlet passages 62, and at this time, the fuel and air will stop being supplied to the outside of the integrated strut, so as to make the aero-engine return to the cruising state.

[0036] The tube wall of the compressible fuel pipe 4 has elasticity, which makes the oil pressure of the fuel system be able to link to control the opening and closing state of the side air outlet passage 62 of the integrated support plate, and still take the control plate 1 as the control element of the side air outlet passage 62. The adjusting unit can have many different forms: in one embodiment, when the side of the compressible fuel pipe 4 close to the side wall of the integrated support plate is fixed, the movement direction of the side of the tube wall away from the support plate expands or retracts with the size of the oil pressure, which is actually consistent with the movement direction of the control plate 1 away from or close to the side air outlet passage 62. At this time, the adjusting unit can choose a connecting plate to directly transmit the movement of the tube wall to the control plate 1. Considering that the fluctuation of the tube wall of the compressible fuel pipe 4 is relatively small, the adjusting unit can also choose a transmission component with amplification movement effect, such as a swing mechanism or a lever mechanism, etc. At this time, the control plate 1 can integrate one or more components of the above swing mechanism or lever mechanism on the basis of the structure of opening or closing the side air outlet passage 62, so that the structure is more compact. Correspondingly, if the wall movement of the compressible fuel pipe 4 in other directions is considered as the input end of the adjusting unit, and the movement of the control plate 1 is considered as the output end of the adjusting unit, those skilled in the art understand that there is a certain angle between the movement of the input and output ends. At this time, a multi-link mechanism, a cam, etc. can be selected as the specific form of the adjusting unit to transmit the movement between the two.

[0037] As shown in Figures 1-2 and Figures 5-6 , preferably, in order to improve the reliability and compactness of the adjusting unit, in one embodiment of the present application, the adjusting unit specifically includes a fixed ring 3, a plug 5, a positioning pin 2 and a first spring 81, wherein: the fixed ring 3 is sleeved outside the compressible fuel pipe 4, the plug 5 is arranged inside the fixed ring 3 and attached to the side of the compressible fuel pipe 4 away from the fuel nozzle 41, the positioning pin 2 passes through the opening on the fixed ring 3 and is connected between the plug 5 and the first part 11, and the first spring 81 is sleeved outside the positioning pin 2, in a compressed state and arranged between the plug 5 and the fixed ring 3, or in an expanded state and arranged between the first part 11 and the fixed ring 3.

[0038] As shown in Figure 2As shown, in each regulating unit, the compressed first spring 81 is located between the fixed ring 3 and the bottom surface of the block 5, which is in contact with the compressible oil pipe 4, so the first spring 81 can compress the compressible oil pipe 4 through the block 5 moving in the fixed ring 3. When the force is not turned on, the oil supply system does not supply oil to the compressible oil pipe 4, and the pressure of the compressed first spring 81 on the compressible oil pipe 4 is greater than the pressure inside the compressible oil pipe 4, so the compressible oil pipe 4 is compressed. At this time, the positioning pin 2 pulls the first part 11 to move towards the inner wall surface of the support plate until the second part 12 completely coincides with the inner wall surface of the integrated support plate, so that the side gas outlet passage 62 is closed by the second part 12, and no longer exhausts to the outside of the support plate. Therefore, when the force is not turned on, the integrated support plate provided by the application can minimize flow loss. Figure 1 As shown, when the force is turned on, the oil supply system supplies oil to the compressible oil pipe 4, and the oil pressure in the compressible oil pipe 4 continuously rises, so that the pipe wall expands outward. When the pressure in the compressible oil pipe 4 is greater than the pressure of the first spring 81, the compressible oil pipe 4 will push the block 5, so that the positioning pin 2 pushes open the first part 11, and in turn makes the second part 12 be pushed away from the inner wall surface of the integrated support plate, so that the side gas outlet passage 62 is no longer closed. Thus, the outer envelope gas located in the cavity of the integrated support plate is sprayed out through the side gas outlet passage 62, and a stable recirculation zone is formed behind the integrated support plate, so as to organize the force combustion.

[0039] The position of the first spring 81 can also be arranged between the groove 7 and the second part 12, and ensure that the spring is in tension, so that the second part 12 is always pulled towards the inner wall surface of the support plate. When the force is not turned on, the pressure in the compressible oil pipe 4 is less than the tension of the first spring 81, so that the tension of the first spring 81 is transmitted to the block 5 moving in the fixed ring 3 through the positioning pin 2, and the block 5 further extrudes the compressible oil pipe 4 until the first spring 81 returns to the original length, and the second part 12 will be attached to the inner wall of the integrated support plate, preventing the outer envelope gas from being sprayed out of the side gas outlet passage 62. When the force is turned on, the oil pressure is greater than the tension of the spring, so that the pipe expands and pushes the block, and the expansion force is transmitted to the first part 11 through the positioning pin, pulling the control plate 1 to move inward, and the second part 12 is opened, so that the outer envelope gas can be sprayed out of the side gas outlet passage 62, thereby forming a stable recirculation zone behind the integrated support plate.

[0040] Preferably, inside the adjusting unit, the positioning pin 2 is a cylindrical structure, one end of which is connected with the first part 11, and the other end is connected with the block 5 through the round hole of the fixing ring 3, for connecting the adjusting plate 1 and the block 5; the cross section of the compressible oil pipe 4 is circular, the fixing ring 3 includes an arc wall surface which is tightly fitted on the side of the compressible oil pipe 4 away from the control plate 1, and the arc wall surface is tightly fitted on one side of the compressible oil pipe 4, so that the fixing ring 3 is always tightly fitted on the compressible oil pipe 4 during the movement of the fixing ring 3 relative to the control plate 1; the fixing ring 3 is an arch bridge structure, the area outside the arc cross section of the fixing ring 3 is the translational space of the block 5, and in the cross section perpendicular to the length direction of the integrated support plate, the cross section of the block 5 is a trapezoid with the upper bottom tightly fitted on the compressible oil pipe 4, and the area of the block 5 is larger on one side, which is the bottom surface, and the bottom surface is connected with the first part 11 through the positioning pin 2, so that the bottom surface of the block 5 made of elastic material is in contact with the compressible oil pipe 4, and when the block 5 is stressed, the force is uniformly transmitted to the compressible oil pipe 4 or the first part 11.

[0041] It can be seen that, by arranging the compression spring between the bottom surface of the block 5 and the fixing ring 3, or arranging the tensile spring between the first part 11 and the fixing ring 3, the continuous cooperation between the fuel quantity and the air quantity is realized, when the fuel quantity increases, the oil pressure increases and the pressure is transmitted to the transmission unit through the spring, so that the opening of the second part 12 increases, the air quantity increases, and the fuel and air in a suitable ratio will enter the inner channel area through the integrated support plate for combustion, at this time, the air sprayed out of the side air outlet passage 62 will also play the role of a pneumatic barrier, and will block the airflow to a certain extent, so as to expand and stabilize the backflow area behind the integrated support plate, and ensure stable combustion of the flame. When the fuel supply is stopped, the side air outlet passage 62 no longer sprays air outwards, at this time, the integrated support plate will effectively reduce the flow resistance with the airfoil contour, and improve the working efficiency of the aero-engine in the cruising state.

[0042] As shown in Figures 1-2 In a preferred embodiment, the side wall of the fixing ring 3 parallel to the extension direction of the first spring 81 is a flat wall surface, and the first part 11 includes a guide wall surface which is parallelly arranged on the outside of the flat wall surface, at this time, during the movement of the fixing ring 3 relative to the control plate 1, the guide wall surface will keep tightly fitted on the flat wall surface, so as to ensure the movement direction of the control plate 1, and make it better fit the opening or closing position of the side air outlet passage 62.

[0043] As shown in Figure 2As shown, in a preferred embodiment, the regulating unit also includes a second spring 82, which is sleeved on the outer periphery of the positioning pin 2, with one end thereof suspended in the air and the other end fixedly arranged on one of the two surfaces opposite to the block 5 and the fixing ring 3, or on one of the two surfaces opposite to the fixing ring 3 and the first part 11. The present invention can more flexibly adjust the continuous coordination between the amount of fuel and the amount of air during ignition by providing the second spring 82: when the oil pressure reaches a certain value so that the suspended end of the second spring 82 contacts the block 5, the fixing ring 3 or the first part 11, the first spring 81 and the second spring 82 will be used together to transmit the oil pressure to the regulating unit. Compared with the technical solution of transmitting the oil pressure only through the first spring 81, under the same oil pressure, this slows down the increase in the opening of the second part 12, so that the oil injection in the ignition oil-gas coordination increases and the increase in the air supply of the support plate slows down, which can make it possible for example Figure 1 The ratio of fuel to air in the recirculation zone behind the integrated support plate is closer to an equivalence ratio. Furthermore, because the air in the integrated support plate is drawn in from the outer culvert and has a relatively low temperature, the provision of a second spring 82 slows the increase in air supply. This significantly increases the temperature in the recirculation zone compared to a solution without the second spring. This promotes stable spontaneous combustion within the recirculation zone, thereby stabilizing organized combustion. Furthermore, the reduced air supply means that the introduced outer culvert gas spends more time in the integrated support plate, facilitating cooling of the integrated support plate and the compressible oil pipe 4.

[0044] Further integration Figure 1 and Figure 2 To optimize the mixing and combustion of the gas and air ejected from the integrated support plate, in a preferred embodiment, two sets of regulating units, each corresponding to the two compressible oil pipes 4, can be associated with a single control panel 1. These two sets of regulating units are vertically distributed and symmetrically positioned on the inner side of the trailing edge of the integrated support plate. The control panel 1 has a concave cross-section and comprises two first portions 11 and a second portion 12 sandwiched between the two first portions 11. Considering that the control panel 1 is a long, concave plate extending from the upper surface to the lower surface of the integrated support plate, two rows of first portions 11 are connected to a plurality of locating pins 2, while one row of second portions 12 faces the side air outlet passage 62 provided on the inner wall of the trailing edge of the integrated support plate. With this arrangement, there is a row of side air outlet channels 62 between the two rows of fuel injectors 41. The non-side-by-side positional relationship can delay the mixing process of fuel and air, so that the fuel undergoes a certain period of lateral shear atomization after being ejected through the fuel injector 41 and then mixes with the air ejected from the side air outlet channels 62, thereby avoiding problems such as low combustion efficiency and unstable combustion that are easily caused by the fuel not being fully atomized and mixed with air.

[0045] like Figure 6As shown, in this embodiment, the control panel 1 will include at least one first portion 11 and at least one second portion 12, and the at least one first portion 11 and the at least one second portion 12 will be staggered with each other. Correspondingly, the fuel injectors 41 and the side air outlet channels 62 will also be staggered with each other in multiple rows, which can improve the uniformity of oil and gas mixing and is more conducive to organizing combustion.

[0046] like Figure 3 As shown, the side air outlet channel 62 can preferably be in the form of a side opening structure. The distribution of the multiple fuel nozzles 41 on the wall of the integrated support plate along the length of the integrated support plate can be spaced apart from the distribution of the multiple side openings. For example, 8-12 fuel nozzles 41 are vertically disposed on one side of the compressible oil pipe 4, and 7-10 side openings are vertically disposed on the trailing edge wall. Because the airflow introduced from the culvert is relatively low in temperature, even after being heated by the high temperature environment inside the support plate, its temperature remains lower than that of the incoming airflow. Therefore, the side openings and fuel nozzles 41 are arranged in a row (in the array of multiple fuel nozzles 41, the side openings and fuel nozzles 41 are arranged in different rows and columns). This ensures that upon initial fuel injection, the fuel does not directly contact the air ejected from the side openings. Instead, the fuel is further sheared, atomized, and heated by the incoming airflow in the form of a transverse jet before mixing with the air ejected from the side openings and burning in the recirculation zone formed behind the support plate.

[0047] like Figure 4 As shown, further preferably, the side air outlet passage 62 may be in the form of a side air slit. Compared to side openings, side air slits offer a greater air outlet volume and more uniform air outlet along the length of the integrated support plate, better ensuring fuel-air mixing and adapting to a wider operating range, particularly the fuel and air supply requirements under high-powered conditions. The side air slit may be a continuous, single-piece air slit or divided into multiple sections. Multiple sections offer greater structural stability than a single, single-piece air slit and are less susceptible to deformation due to temperature fluctuations.

[0048] In a preferred embodiment, multiple fuel injectors 41 are arranged according to the radial temperature distribution of the incoming flow, with more fuel injectors 4 arranged at higher temperatures. Inside the support plate, multiple adjustment units are evenly distributed along the compressible oil pipe 4, thereby ensuring that the control plate 1 is subjected to uniform force in the longitudinal direction.

[0049] Preferably, the inner wall of the integrated support plate is provided with a groove 7, and the range of the groove 7 covers the side air outlet channel 62, that is, the side air outlet channel 62 is distributed on the two side walls of the rear edge of the support plate in the vertical direction and coincides with the position of the groove 7 on the inner wall, and the second portion 12 can be embedded in the groove 7 to close the side air outlet channel 62. Figure 2 and Figure 3As shown, in a preferred embodiment, the shape and area of the groove 7 are completely consistent with the second part 12, so the second part 12 can completely coincide with the groove 7, and at the joint of the second part 12 and the groove 7, a liquid seal can be formed by applying a liquid to improve the air tightness, and in order to ensure that the second part 12 can be smoothly opened after the fuel in the compressible fuel pipe is filled, the present application preferably selects a sealing liquid with smaller viscosity.

[0050] In a preferred embodiment, the bleed air passage 61 is configured to gradually increase in cross-sectional area along the depth direction, and the ratio of the outlet cross-sectional area to the inlet cross-sectional area is greater than the ratio of the outer bypass airflow pressure at the inlet of the bleed air passage 61 to the inner bypass airflow pressure outside the side air outlet passage 62. The bottom of the integrated strut plate is also provided with a bottom opening 63, and the bottom opening 63 is provided with a one-way outward opening overflow plate, and the threshold pressure at which the overflow plate opens is greater than the inner bypass airflow pressure and less than the pressure at the maximum cross-sectional area of the bleed air passage 61. Thus, by configuring the shape of the bleed air passage 61, the present application can increase the pressure and reduce the speed of the outer bypass airflow, so that the outer bypass airflow is continuously increased in pressure after being introduced into the inside of the integrated strut plate, and is then ejected from the side air outlet passage 62. The increase in cross-sectional area of the bleed air passage 61 along the depth direction can effectively increase the pressure of the outer bypass airflow and introduce it into the inside of the integrated strut plate, so that the present application does not have to extract high-pressure air from the compressor stage, but can extract the outer bypass air of the afterburner section by pressurization, avoiding the occupation of the inner bypass gas participating in work, and overall improving the efficiency and thrust of the aero-engine. At the same time, the air with higher pressure and lower flow rate will be beneficial to the mixing between the small droplets after the fuel is atomized, avoiding the blowing out of the stable ignition source in the recirculation zone by air with too high flow rate. The bottom opening 63 is provided with an overflow plate that can only open outward, so that when the pressure in the integrated strut plate is less than the threshold pressure, the overflow plate is closed to ensure that the high-temperature gas does not invade the inside of the integrated strut plate, and when the pressure in the strut plate is greater than the threshold pressure, the overflow plate will be pressed to open from the inside to the outside, so that the introduced outer bypass cold air is ejected from the bottom opening 63.

[0051] It is important to note that the threshold pressure at which the overflow plate opens should be greater than the pressure of the inner duct flow to prevent the backflow of high-temperature inner duct gas into the support plate, and less than the pressure at the maximum cross-sectional area of ​​the bleed air passage 61, thereby ensuring that the outer duct cool air can be drawn into the support plate along the pressure gradient of the bleed air passage 61. Therefore, when the boost is not in effect, air drawn into the integrated support plate from the outer duct will accumulate within the support plate until the pressure inside the integrated support plate reaches the threshold pressure, at which point the overflow plate will open and exhaust air outward through the bottom opening 63. This exhaust process gradually reduces the pressure inside the integrated support plate to the same level as the external pressure, thereby allowing the gas from the outer duct, after expansion and deceleration through the bleed air passage 61, flowing through the integrated support plate and ultimately out through the bottom opening 63, to reach a state of dynamic inflow and outflow equilibrium (at this point, the pressure differentials between the inlet of the integrated support plate's bleed air passage 61 and the outer duct flow, and between the bottom opening 63 and the inner duct flow, are zero, respectively), ensuring an uninterrupted supply of cooling air to the integrated support plate. After the boost is turned on, the high-pressure air in the integrated support plate is ejected from the side air outlet channel 62, the internal pressure of the integrated support plate is reduced, and the dynamic equilibrium state is broken. At this time, the external air will enter the integrated support plate through the air inlet channel 61 under the action of the pressure difference. At the same time, the bottom opening 63 is closed, and the air in the integrated support plate will be effectively replenished, thereby continuing to be stably supplied to the inner part through the side air outlet channel 62, forming a stable reflux area.

[0052] Therefore, the present invention reasonably sets the threshold pressure for opening the overflow plate to control the air outlet end of the integrated support plate, and sets the cross-sectional area of ​​the air inlet channel 61 to gradually expand so that the intake pressure increases steadily to a preset value, thereby controlling the air inlet end of the integrated support plate, so that the air entering the inner area through the air inlet channel 61 and then through the side air outlet channel 62 (powered state) or the bottom opening 63 (non-powered state) has a stable pressure, effectively addressing the problem of uneven air inlet pressure caused by uneven outer pressure, ensuring that the air path of the inner channel is not affected and the stable state of the flame is not disturbed.

[0053] Preferably, there are at least two compressible oil pipes 4, and these at least two compressible oil pipes 4 are interconnected within the integrated support plate, preferably at the bottom. This allows the interconnected multiple compressible oil pipes 4 to balance oil pressure throughout the integrated support plate, effectively increasing the synergy of the entire regulating unit. The inlets of the multiple compressible oil pipes 4 can also be split into multiple routes from the same fuel manifold, reducing the number of fuel inlets and improving the overall compactness of the structure.

[0054] Based on the above technical scheme, the present application takes the support plate supporting between the casing and the center cone as the design key, integrates the structure and function of the fuel nozzle and the flame stabilizer, and arranges the light-weight integrated support plate structure, and then cooperates with the oil pressure transmission device arranged in the support plate and the gas-liquid two-phase injection mode, so that the jet passage adjustment and the backflow area formation functions are realized, the flow loss problem caused by the flame stabilizer is relieved, and the good aerodynamic effect and the excellent flame stabilization effect are realized.

[0055] Those skilled in the art can understand that, unless otherwise defined, all terms including technical terms and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. It should also be understood that terms such as those defined in a general dictionary have meanings consistent with those in the context of the prior art and should not be interpreted in an idealized or overly formal sense unless expressly so defined herein.

[0056] The above detailed description of the embodiments of the present application is further detailed for the purpose of illustrating the objects, technical solutions and advantages of the present application. It should be understood that the above is only a specific embodiment of the present application and is not used to limit the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the protection scope of the present application.

Claims

1. An integrated support plate for oil and gas coordinated control, characterized in that: The integrated support plate is a cavity structure and is connected to the outer duct through an air inlet channel (61) provided on the top. The integrated support plate includes: A compressible oil pipe (4) is arranged inside the integrated support plate and sprays oil to the outside of the support plate through a plurality of oil spray nozzles (41); A control panel (1) comprising a first portion (11) corresponding to the compressible oil pipe (4), and a second portion (12) capable of controlling the opening or closing of the side air outlet channel (62) on the integrated support plate; and An adjusting unit is provided between the compressible oil pipe (4) and the first part (11), and is configured to adjust the control plate (1) to the second part (12) to open the side air outlet channel (62) when the compressible oil pipe (4) is in an oil supply state, and to adjust the control plate (1) to the second part (12) to close the side air outlet channel (62) when the compressible oil pipe (4) is in a non-oil supply state.

2. The integrated support plate for oil and gas coordinated control according to claim 1, characterized in that: The adjustment unit includes: A fixing ring (3) is sleeved on the outside of the compressible oil pipe (4); A blocking block (5) is arranged inside the fixing ring (3) and attached to a side of the compressible oil pipe (4) away from the oil injection nozzle (41); a positioning pin (2) passing through the opening of the fixing ring (3) and connected between the blocking block (5) and the first portion (11); and The first spring (81) is sleeved on the outer periphery of the positioning pin (2), is in a compressed state and is arranged between the blocking block (5) and the fixing ring (3), or is in an expanded state and is arranged between the first part (11) and the fixing ring (3).

3. The integrated support plate for oil and gas coordinated control according to claim 2, characterized in that: The cross section of the compressible oil pipe (4) is circular, the fixing ring (3) includes an arc wall surface that is in close contact with the compressible oil pipe (4) on the side away from the control plate (1), and in a cross section perpendicular to the length direction of the integrated support plate, the cross section of the blocking block (5) is a trapezoid with the upper base in close contact with the compressible oil pipe (4).

4. The integrated support plate for oil and gas coordinated control according to claim 2, characterized in that: The side wall of the fixing ring (3) parallel to the expansion and contraction direction of the first spring (81) is a straight wall surface, and the first part (11) includes a guide wall surface, and the guide wall surface is parallel to the outer side of the straight wall surface.

5. The integrated support plate for oil and gas coordinated control according to claim 2, characterized in that: The adjustment unit further includes a second spring (82), which is sleeved on the outer periphery of the positioning pin (2), with one end of the second spring suspended in the air and the other end fixedly arranged on one of the two surfaces of the block (5) opposite to the fixing ring (3), or arranged on one of the two surfaces of the fixing ring (3) opposite to the first part (11).

6. The integrated support plate for oil and gas coordinated control according to claim 1, characterized in that: The inner wall surface of the integrated support plate is provided with a groove (7), the range of the groove (7) covers the side air outlet channel (62), and the second part (12) can be embedded in the groove (7) and close the side air outlet channel (62).

7. The integrated support plate for oil and gas coordinated control according to claim 1, characterized in that: The air bleed channel (61) is constructed such that: the cross-sectional area gradually increases along the depth direction, and the ratio of the outlet cross-sectional area to the inlet cross-sectional area is greater than the ratio of the outer duct air flow pressure at the inlet of the air bleed channel (61) to the inner duct air flow pressure outside the side air outlet channel (62); the bottom of the integrated support plate is also provided with a bottom opening (63), and the bottom opening (63) is provided with an overflow plate that opens outward in one direction, and the threshold pressure for opening the overflow plate is greater than the inner duct air flow pressure and less than the pressure at the maximum cross-sectional area of ​​the air bleed channel (61).

8. The integrated support plate for oil and gas coordinated control according to claim 1, characterized in that: There are at least two compressible oil pipes (4), and at least two of the compressible oil pipes (4) are interconnected inside the integrated support plate.

9. The integrated support plate for oil and gas coordinated control according to claim 1, characterized in that: The control panel (1) comprises at least one first portion (11) and at least one second portion (12), and the first portion (11) and the second portion (12) are arranged alternately with each other.

10. The integrated support plate for oil and gas coordinated control according to claim 9, characterized in that: In the length direction of the integrated support plate, a plurality of the oil injection nozzles (41) are distributed on both sides of the side air outlet channel (62) on the wall surface of the integrated support plate.

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