WO2024007460A1 - Air-bleed mechanism for turbine engine - Google Patents

Air-bleed mechanism for turbine engine Download PDF

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Publication number
WO2024007460A1
WO2024007460A1 PCT/CN2022/122551 CN2022122551W WO2024007460A1 WO 2024007460 A1 WO2024007460 A1 WO 2024007460A1 CN 2022122551 W CN2022122551 W CN 2022122551W WO 2024007460 A1 WO2024007460 A1 WO 2024007460A1
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Prior art keywords
sealing
ring
turbine engine
static
bleed
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PCT/CN2022/122551
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French (fr)
Chinese (zh)
Inventor
代胜
熊杰
刘驰
熊建东
蔡顶伦
邓延波
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四川航天中天动力装备有限责任公司
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Publication of WO2024007460A1 publication Critical patent/WO2024007460A1/en

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
    • F01D25/00—Component parts, details, or accessories, not provided for in, or of interest apart from, other groups
    • F01D25/24—Casings; Casing parts, e.g. diaphragms, casing fastenings
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
    • F01D11/00—Preventing or minimising internal leakage of working-fluid, e.g. between stages
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
    • F01D25/00—Component parts, details, or accessories, not provided for in, or of interest apart from, other groups
    • F01D25/30—Exhaust heads, chambers, or the like
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/10—Internal combustion engine [ICE] based vehicles
    • Y02T10/12—Improving ICE efficiencies

Definitions

  • the present invention relates to the technical field of aerospace engines, and more specifically to the technical field of exhaust mechanisms for turbine engines.
  • the aeroengine bleed mechanism is an effective measure to improve the stable operating range of the engine and is widely used in turbine engines with high boost ratios.
  • a turbine engine is a form of engine that uses rotating parts to extract kinetic energy from the fluid passing through it. It is a type of internal combustion engine and is often used as an engine for aircraft and large ships or vehicles. All turbine engines have three major parts: compressor, combustion chamber, and turbine. Compressors are usually divided into low-pressure compressors (low-pressure section) and high-pressure compressors (high-pressure section). The low-pressure section sometimes also functions as an air intake fan to increase the air intake. The incoming airflow is compressed into a high-density, high-density compressor in the compressor. High-pressure, low-speed airflow to increase the efficiency of the engine.
  • the bleed mechanism of conventional turbine engines usually adopts the structural form of an air collection chamber and a bleed valve. Since the position of the bleed is relatively concentrated, when the bleed amount is certain, the structure size is large and it is difficult to install on the engine. layout.
  • the current bleed mechanism of the turbine engine is difficult to meet the aircraft's requirements for the size envelope and weight limit of the turbine engine in some turbine engine application scenarios where the outer size and weight control are very strict.
  • the purpose of the present invention is to solve the problem that the existing exhaust mechanism of a turbine engine is difficult to meet the aircraft's requirements for the size envelope and weight limit of the turbine engine in some turbine engine application scenarios where the outer size and weight control are very strict.
  • the present invention provides a bleed mechanism for a turbine engine.
  • a venting mechanism for a turbine engine including a static sealing ring integrated on the outside of the engine casing.
  • the static sealing ring has an inclined inclined surface, and a plurality of exhaust holes are provided on the inclined inclined surface.
  • the exhaust holes Avoid the internal blades of the engine casing and distribute them evenly on the inclined surface;
  • the outside of the sealing static ring is fitted with a sealing dynamic ring, and the axial end face of the inclined surface junction of the sealing static ring and the sealing dynamic ring passes through an axial stop
  • the plates are connected and locked, and an actuating device is connected to the axial baffle; a sealing structure is connected between the dynamic seal ring and the static seal ring.
  • the actuator moves axially, it needs to overcome two parts of load.
  • One is the axial component of air pressure when the compressor is working; the other is the compressed sealing structure to achieve the sealing effect.
  • the actuator can provide sufficient and Uniform axial pressure and multiple actuators can be evenly arranged on the circumference, which can effectively ensure the reliable operation of the sealing structure.
  • the deflation mechanism realizes deflation and sealing by adjusting the axial distance between the sealing dynamic ring and the sealing static ring.
  • the sealing static ring is loaded by the actuator and squeezes the sealing structure.
  • the actuating device drives the sealing dynamic ring to move axially, so that the compressed air in the compressor enters the annular channel between the sealing dynamic ring and the sealing static ring from the exhaust hole of the sealing static ring, and flows along the axis Exhaust air to both sides.
  • the exhaust area can be controlled by controlling the axial displacement of the dynamic seal ring.
  • the actuator moves in the opposite direction to pull the dynamic seal ring back to the initial state. position, the bleed mechanism can be closed.
  • the bleeder mechanism of the present application under the condition of the same bleeder amount, significantly reduces the impact on the engine envelope radius and overall weight compared to the traditional centralized bleeder mechanism of the air collection chamber and bleeder valve, and the bleeder mechanism
  • the pneumatic mechanism has a simple structure, high reliability and low cost.
  • the sealing structure includes a rubber ring groove arranged on the inclined surface of the sealing stationary ring.
  • a sealing rubber ring is connected in the rubber ring groove, and the sealing rubber ring is fixed in the rubber ring groove through vulcanization.
  • sealing can be achieved by compressing and vulcanizing the sealing rubber ring fixed on the sealing stationary ring through the load exerted by the actuator.
  • This application enhances the sealing effect between the dynamic seal ring and the static seal ring by connecting the sealing rubber ring to the sealing static ring.
  • the vulcanization process is used to connect the sealing rubber ring in the rubber ring groove, making the connection of the sealing rubber ring more convenient.
  • the stability can also play a role in enhancing the sealing effect.
  • the actuating device includes an electric push rod, and the engine casing is connected to a mounting and fixing base.
  • One end of the electric push rod is connected to the mounting and fixing seat, and the other end is connected to a sealing moving ring.
  • the electric push rod is selected according to the actual situation, taking into account the load, stroke, and actuation speed, and selecting a small-sized product to control the size and weight of the actuator.
  • the circumference of the sealing dynamic ring adopts a multi-lobed centrally symmetrical structure; wedge-shaped fitting tenons and tenon grooves are respectively provided at both ends of the arc surface constituting the sealing dynamic ring.
  • the tenon and the tenon groove have a small interference fit, and the interference fit surface is coated with sealant.
  • wedge-shaped tenons and tenon grooves are respectively provided at both ends of the arc surface constituting the sealing dynamic ring.
  • the tenons and tenon grooves have a small interference fit, so that the radial positioning between the multi-lobed symmetrical structures can be achieved.
  • the front end surface of the sealing dynamic ring is provided with a threaded hole for connecting with the axial baffle.
  • the mounting holes can be appropriately modified to avoid excessive prestress on the electric push rod.
  • the distance between the conical surface of the moving seal ring and the static seal ring should be greater than the required value for air release.
  • the distance between the conical surface of the dynamic seal ring and the static seal ring does not meet the requirements, it can be adjusted by modifying the mounting fixed seat or the thickness of the axial baffle mounting edge.
  • the installation method of the air bleed mechanism is: connect and fix the installation fixed base with the engine casing, then fix the electric push rod on the installation fixed base, and then axially fit the multi-petal arc-shaped block of the sealing dynamic ring on the engine casing. After sealing the outside of the static ring, press each other axially into the tongue and groove to fit. Then fit the axial baffle and the front end face of the sealing moving ring without installing bolts for the time being. After they are fit, move them together in the axial direction and align them in the axial direction.
  • the exhaust mechanism of this application significantly reduces the impact on the engine envelope radius and overall weight compared to the traditional centralized exhaust mechanism of the air collection chamber and exhaust valve. Moreover, the deflation mechanism has a simple structure, high reliability and low cost;
  • wedge-shaped tenons and tenon grooves are respectively provided at both ends of the arc surface constituting the sealing dynamic ring.
  • the tenons and tenon grooves have a small interference fit, so that the radial positioning between the multi-lobed symmetrical structures can be achieved.
  • Figure 1 is a schematic structural diagram of a bleed mechanism for a turbine engine in the present invention
  • Figure 2 is a schematic structural diagram of the sealing static ring in the present invention.
  • Figure 3 is a schematic structural diagram of the dynamic seal ring in the present invention.
  • Figure 4 is a structural schematic diagram of the arc surface forming the sealing dynamic ring in the present invention.
  • this embodiment provides a bleed mechanism for a turbine engine, including a static sealing ring 01 integrated on the outside of the engine casing 06.
  • the static sealing ring 01 has an inclined inclined surface, and a plurality of Exhaust hole 07, the exhaust hole 07 avoids the internal blades of the engine casing 06 and is evenly distributed on the inclined surface;
  • the outer side of the sealing static ring 01 is fitted with the sealing dynamic ring 05, and the sealing static ring 01 is combined with the slope of the sealing dynamic ring 05
  • the axial end surface is connected and locked by the axial baffle 02, and the axial baffle 02 is connected with the actuating device 03;
  • the sealing structure is connected between the sealing moving ring 05 and the sealing stationary ring 01.
  • the actuator 03 moves axially, it needs to overcome two parts of the load. One is the axial component of the air pressure when the compressor is working; the other is the compressed sealing structure to achieve the sealing effect. To ensure that the actuator 03 can provide With sufficient and uniform axial pressure, multiple actuators 03 can be evenly arranged on the circumference, which can effectively ensure the reliable operation of the sealing structure.
  • the deflation mechanism realizes deflation and sealing by adjusting the axial distance between the dynamic seal ring 05 and the static seal ring 01.
  • the static seal ring 01 is loaded by the actuator 03 and squeezed.
  • the sealing structure is used to achieve sealing.
  • the actuator 03 drives the sealing dynamic ring 05 to move axially, so that the compressed air in the compressor enters the sealing dynamic ring 05 and the sealing static ring from the exhaust hole 07 of the sealing static ring 01 01, and exhaust to both sides along the axial direction.
  • the exhaust area can be controlled by controlling the axial displacement of the sealing ring 05.
  • the actuator 03 moves in the opposite direction. direction, pull the sealing ring 05 back to the initial position, and the bleed mechanism can be closed.
  • the bleeder mechanism of the present application under the condition of the same bleeder amount, significantly reduces the impact on the engine envelope radius and overall weight compared to the traditional centralized bleeder mechanism of the air collection chamber and bleeder valve, and the bleeder mechanism
  • the pneumatic mechanism has a simple structure, high reliability and low cost.
  • the sealing structure of this embodiment includes a rubber ring groove provided on the inclination of the sealing stationary ring 01.
  • a sealing rubber ring 08 is connected in the rubber ring groove.
  • the sealing rubber ring 08 Fixed in the rubber ring groove by vulcanization.
  • sealing can be achieved by compressing and vulcanizing the sealing rubber ring 08 fixed on the static sealing ring 01 through the load exerted by the actuator 03 .
  • This application enhances the sealing effect between the dynamic seal ring 05 and the static seal ring 01 by connecting the sealing rubber ring 08 to the sealing static ring 01.
  • a vulcanization process is used to connect the sealing rubber ring 08 in the rubber ring groove to make the seal
  • the connection of rubber ring 08 is more stable and can also enhance the sealing effect.
  • the actuating device 03 of this embodiment includes an electric pushrod.
  • the engine casing 06 is connected to a mounting fixture 04.
  • One end of the electric pushrod is connected to the mounting fixture 04, and the other end of the electric pushrod is connected to the mounting fixture 04.
  • the electric push rod is selected according to the actual situation, taking into account the load, stroke, and actuation speed, and selecting a small-sized product to control the size and weight of the actuator 03.
  • the sealing dynamic ring 05 of this embodiment adopts a multi-lobed centrally symmetrical structure on the circumference; the two ends of the arc surface 09 constituting the sealing dynamic ring 05 are respectively provided with wedge-shaped tenons 11 and tenons. slot 10.
  • the tenon 11 and the tenon groove 10 have a small interference fit, and sealant is applied to the interference fit surface.
  • wedge-shaped tenons 11 and tenon grooves 10 are respectively provided at both ends of the arc surface 09 constituting the sealing dynamic ring 05.
  • the tenons and tenon grooves 10 have a small interference fit to achieve radial positioning between multi-lobed symmetrical structures. .
  • the front end surface of the sealing dynamic ring 05 in this embodiment is provided with a threaded hole for connecting with the axial baffle 02.
  • the mounting holes can be appropriately modified to avoid excessive prestress on the electric push rod.
  • the distance between the conical surface of the dynamic seal ring 05 and the static seal ring 01 does not meet the requirements, it can be adjusted by modifying the thickness of the mounting base 04 or the mounting edge of the axial baffle 02.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Gasket Seals (AREA)
  • Turbine Rotor Nozzle Sealing (AREA)

Abstract

The present invention relates to the technical field of aeroengines, and disclosed is an air-bleed mechanism for a turbine engine, which solves the problem that existing air-bleed mechanisms for turbine engines can hardly meet the requirements of aircrafts on the size envelope and weight limit of the turbine engines. The air-bleed mechanism for the turbine engine comprises a static sealing ring integrated on the outer side of an engine casing; the static sealing ring has an inclined surface; a plurality of exhaust holes are formed on the inclined surface; the exhaust holes keep off blades inside the engine casing and are evenly distributed on the inclined surface; a movable sealing ring is attached to the outer side of the static sealing ring; axial end surfaces at the joint between the inclined surfaces of the static sealing ring and the movable sealing ring are connected and locked by means of an axial baffle; an actuating device is connected to the axial baffle; and a sealing structure is connected between the movable sealing ring and the sealing static ring. Under the condition of a same volume of bleed air, compared with conventional air-bleed mechanisms, the air-bleed mechanism of the present application significantly reduces the impact on the envelope radius and overall weight of an engine, and the air-bleed mechanism has a simple structure, high reliability, and low cost.

Description

一种涡轮发动机用放气机构A kind of exhaust mechanism for turbine engine 技术领域Technical field
本发明涉及航空发动机技术领域，更具体的是涉及涡轮发动机用放气机构技术领域。The present invention relates to the technical field of aerospace engines, and more specifically to the technical field of exhaust mechanisms for turbine engines.
背景技术Background technique
航空发动机放气机构是提高发动机稳定工作范围的有效措施，在高增压比的涡轮发动机中得到广泛的应用。涡轮发动机是一种利用旋转的机件自穿过它的流体中汲取动能的发动机形式，是内燃机的一种，常用作飞机与大型的船舶或车辆的发动机。所有的涡轮发动机都具备压缩机、燃烧室、涡轮机三大部份。压缩机通常还分成低压压缩机(低压段)和高压压缩机(高压段)，低压段有时也兼具进气风扇增加进气量的作用，进入的气流在压缩机内被压缩成高密度、高压、低速的气流，以增加发动机的效率，气流进入燃烧室后，由供油喷嘴喷射出燃料，在燃烧室内与气流混合并燃烧，燃烧后产生的高热废气，接着会推动涡轮机使其旋转，然后带着剩余的能量，经由喷嘴或排气管排出。The aeroengine bleed mechanism is an effective measure to improve the stable operating range of the engine and is widely used in turbine engines with high boost ratios. A turbine engine is a form of engine that uses rotating parts to extract kinetic energy from the fluid passing through it. It is a type of internal combustion engine and is often used as an engine for aircraft and large ships or vehicles. All turbine engines have three major parts: compressor, combustion chamber, and turbine. Compressors are usually divided into low-pressure compressors (low-pressure section) and high-pressure compressors (high-pressure section). The low-pressure section sometimes also functions as an air intake fan to increase the air intake. The incoming airflow is compressed into a high-density, high-density compressor in the compressor. High-pressure, low-speed airflow to increase the efficiency of the engine. After the airflow enters the combustion chamber, fuel is injected from the fuel supply nozzle, and is mixed with the airflow and burned in the combustion chamber. The high-heat exhaust gas generated after combustion will then push the turbine to rotate. Then it takes the remaining energy and discharges it through the nozzle or exhaust pipe.
目前，常规的涡轮发动机的放气机构通常采用集气腔和放气活门的结构形式，由于其放气的位置较为集中，在放气量一定的情况下，结构尺寸大，且难以在发动机上进行布置。At present, the bleed mechanism of conventional turbine engines usually adopts the structural form of an air collection chamber and a bleed valve. Since the position of the bleed is relatively concentrated, when the bleed amount is certain, the structure size is large and it is difficult to install on the engine. layout.
而且目前的涡轮发动机的放气机构在一些外廓尺寸与重量控制非常严格的涡轮发动机的应用场景中，难以满足飞行器对涡轮发动机的尺寸包络以及重量限制的要求。Moreover, the current bleed mechanism of the turbine engine is difficult to meet the aircraft's requirements for the size envelope and weight limit of the turbine engine in some turbine engine application scenarios where the outer size and weight control are very strict.
发明内容Contents of the invention
本发明的目的在于解决现有的涡轮发动机的放气机构在一些外廓尺寸与重量控制非常严格的涡轮发动机的应用场景中，难以满足飞行器对涡轮发动机的尺寸包络以及重量限制的要求的问题，为了解决上述技术问题，本发明提供一 种涡轮发动机用放气机构。The purpose of the present invention is to solve the problem that the existing exhaust mechanism of a turbine engine is difficult to meet the aircraft's requirements for the size envelope and weight limit of the turbine engine in some turbine engine application scenarios where the outer size and weight control are very strict. , In order to solve the above technical problems, the present invention provides a bleed mechanism for a turbine engine.
本发明为了实现上述目的具体采用以下技术方案：In order to achieve the above object, the present invention specifically adopts the following technical solutions:
一种涡轮发动机用放气机构，包括一体化集成在发动机机匣外侧的密封静环，所述密封静环具有倾角斜面，所述倾角斜面上设置有多个排气孔，所述排气孔避开发动机机匣内部叶片并均匀分布在倾角斜面上；所述密封静环外侧贴合有密封动环，所述密封静环与所述密封动环的斜面结合处轴向端面通过轴向挡板连接锁紧，所述轴向挡板上连接有作动装置；所述密封动环与所述密封静环之间连接有密封结构。A venting mechanism for a turbine engine, including a static sealing ring integrated on the outside of the engine casing. The static sealing ring has an inclined inclined surface, and a plurality of exhaust holes are provided on the inclined inclined surface. The exhaust holes Avoid the internal blades of the engine casing and distribute them evenly on the inclined surface; the outside of the sealing static ring is fitted with a sealing dynamic ring, and the axial end face of the inclined surface junction of the sealing static ring and the sealing dynamic ring passes through an axial stop The plates are connected and locked, and an actuating device is connected to the axial baffle; a sealing structure is connected between the dynamic seal ring and the static seal ring.
其中作动装置在轴向运动时，需要克服两部分载荷，其一是压气机工作时的气压轴向分力；其二是压缩密封结构以达到密封效果，为保证作动装置可以提供足够且均匀的轴向压力，在圆周上可均匀布置多台作动装置，可有效确保密封结构的可靠工作。When the actuator moves axially, it needs to overcome two parts of load. One is the axial component of air pressure when the compressor is working; the other is the compressed sealing structure to achieve the sealing effect. In order to ensure that the actuator can provide sufficient and Uniform axial pressure and multiple actuators can be evenly arranged on the circumference, which can effectively ensure the reliable operation of the sealing structure.
工作原理：该放气机构通过调整密封动环与密封静环之间的轴向距离来实现放气与密封，密封状态下，密封静环由作动装置来施加载荷，挤压密封结构来实现密封，当需要放气时，作动装置带动密封动环轴向移动，使压气机内压缩空气从密封静环的排气孔进入密封动环与密封静环之间的环形通道，并沿轴向向两侧排气，运动过程中，可通过控制密封动环轴向位移来控制排气面积，在放气结束后，作动装置再向相反的方向作动，拉动密封动环回到初始位置，即可将放气机构关闭。Working principle: The deflation mechanism realizes deflation and sealing by adjusting the axial distance between the sealing dynamic ring and the sealing static ring. In the sealing state, the sealing static ring is loaded by the actuator and squeezes the sealing structure. Seal, when it is necessary to deflate, the actuating device drives the sealing dynamic ring to move axially, so that the compressed air in the compressor enters the annular channel between the sealing dynamic ring and the sealing static ring from the exhaust hole of the sealing static ring, and flows along the axis Exhaust air to both sides. During the movement, the exhaust area can be controlled by controlling the axial displacement of the dynamic seal ring. After the deflation is completed, the actuator moves in the opposite direction to pull the dynamic seal ring back to the initial state. position, the bleed mechanism can be closed.
本申请的放气机构，在相同放气量的条件下，相比于传统的集气腔和放气活门的集中放气机构，显著降低了对发动机包络半径及整体重量的影响，且该放气机构的结构简单，可靠性高，成本也低。The bleeder mechanism of the present application, under the condition of the same bleeder amount, significantly reduces the impact on the engine envelope radius and overall weight compared to the traditional centralized bleeder mechanism of the air collection chamber and bleeder valve, and the bleeder mechanism The pneumatic mechanism has a simple structure, high reliability and low cost.
进一步的，所述密封结构包括设置在所述密封静环的倾角斜面上的胶圈槽，所述胶圈槽内连接有密封胶圈，所述密封胶圈通过硫化固定在胶圈槽内。Further, the sealing structure includes a rubber ring groove arranged on the inclined surface of the sealing stationary ring. A sealing rubber ring is connected in the rubber ring groove, and the sealing rubber ring is fixed in the rubber ring groove through vulcanization.
在实现密封时，通过作动装置施加的载荷压缩硫化固定在密封静环上的密封胶圈即可实现密封。When sealing is achieved, sealing can be achieved by compressing and vulcanizing the sealing rubber ring fixed on the sealing stationary ring through the load exerted by the actuator.
本申请通过在密封静环上连接密封胶圈，增强了密封动环与密封静环之间的密封效果，同时采用硫化工艺将密封胶圈连接在胶圈槽内，使密封胶圈的连接更加的稳定，同样也能起到增强密封效果的作用。This application enhances the sealing effect between the dynamic seal ring and the static seal ring by connecting the sealing rubber ring to the sealing static ring. At the same time, the vulcanization process is used to connect the sealing rubber ring in the rubber ring groove, making the connection of the sealing rubber ring more convenient. The stability can also play a role in enhancing the sealing effect.
进一步的，所述作动装置包括电动推杆，所述发动机机匣上连接有安装固定座，所述电动推杆一端连接在所述安装固定座上，另一端连接密封动环。Further, the actuating device includes an electric push rod, and the engine casing is connected to a mounting and fixing base. One end of the electric push rod is connected to the mounting and fixing seat, and the other end is connected to a sealing moving ring.
其中电动推杆根据实际情况进行选择，同时考虑载荷、行程、作动速度，选取小尺寸的产品，以控制作动装置的尺寸与重量。Among them, the electric push rod is selected according to the actual situation, taking into account the load, stroke, and actuation speed, and selecting a small-sized product to control the size and weight of the actuator.
进一步的，所述密封动环的圆周上采用多瓣中心对称结构；构成密封动环的圆弧面两端分别设置楔形配合的榫和榫槽。Furthermore, the circumference of the sealing dynamic ring adopts a multi-lobed centrally symmetrical structure; wedge-shaped fitting tenons and tenon grooves are respectively provided at both ends of the arc surface constituting the sealing dynamic ring.
其中，所述榫与榫槽小过盈配合，过盈配合面处涂抹有密封胶。Wherein, the tenon and the tenon groove have a small interference fit, and the interference fit surface is coated with sealant.
在拼装密封动环时，在过盈配合面处涂抹适量的密封胶，保证密封动环本身的密封可靠性。When assembling the sealing ring, apply an appropriate amount of sealant on the interference fit surface to ensure the sealing reliability of the sealing ring itself.
本申请在构成密封动环的圆弧面两端分别设置楔形配合的榫和榫槽，榫与榫槽小过盈配合，即可实现多瓣对称结构之间的径向定位。In this application, wedge-shaped tenons and tenon grooves are respectively provided at both ends of the arc surface constituting the sealing dynamic ring. The tenons and tenon grooves have a small interference fit, so that the radial positioning between the multi-lobed symmetrical structures can be achieved.
进一步的，所述密封动环前端面设置有用于与轴向挡板连接有的螺纹孔。Furthermore, the front end surface of the sealing dynamic ring is provided with a threaded hole for connecting with the axial baffle.
在安装轴向挡板与密封动环之间的连接螺栓时，应保证周向均匀受力，必要时可对安装孔进行适当修配，避免电动推杆产生过大预应力。When installing the connecting bolts between the axial baffle and the sealing dynamic ring, uniform force in the circumferential direction should be ensured. If necessary, the mounting holes can be appropriately modified to avoid excessive prestress on the electric push rod.
进一步的，当所述密封动环行程最大时，所述密封动环与所述密封静环锥面间距离应大于放气要求值。Further, when the stroke of the moving seal ring is maximum, the distance between the conical surface of the moving seal ring and the static seal ring should be greater than the required value for air release.
如果密封动环与密封静环锥面之间的距离不满足要求，可通过修配安装固定座或轴向挡板安装边的厚度进行调整。If the distance between the conical surface of the dynamic seal ring and the static seal ring does not meet the requirements, it can be adjusted by modifying the mounting fixed seat or the thickness of the axial baffle mounting edge.
进一步的，放气机构的安装方法为：将安装固定座与发动机机匣连接固定，再将电动推杆固定在安装固定座上，然后将密封动环的多瓣弧形块轴向贴合在密封静环外侧后，再互相轴向压入榫槽配合，再将轴向挡板与密封动环前端面贴合且暂不安装螺栓固定，贴合后一起沿轴向移动，对准轴向挡板的安装孔与电动推杆前端的安装凸台后，将电动推杆前端固定与轴向挡板上，然后再安装 轴向挡板与密封动环之间的连接螺栓，安装此螺栓时，应保证周向均匀受力。Further, the installation method of the air bleed mechanism is: connect and fix the installation fixed base with the engine casing, then fix the electric push rod on the installation fixed base, and then axially fit the multi-petal arc-shaped block of the sealing dynamic ring on the engine casing. After sealing the outside of the static ring, press each other axially into the tongue and groove to fit. Then fit the axial baffle and the front end face of the sealing moving ring without installing bolts for the time being. After they are fit, move them together in the axial direction and align them in the axial direction. After the mounting hole of the baffle is connected to the mounting boss at the front end of the electric push rod, fix the front end of the electric push rod to the axial baffle, and then install the connecting bolt between the axial baffle and the sealing dynamic ring. When installing this bolt , should ensure uniform force in the circumferential direction.
本发明的有益效果如下：The beneficial effects of the present invention are as follows:
(1)本申请的放气机构，在相同放气量的条件下，相比于传统的集气腔和放气活门的集中放气机构，显著降低了对发动机包络半径及整体重量的影响，且该放气机构的结构简单，可靠性高，成本也低；(1) The exhaust mechanism of this application, under the same exhaust amount, significantly reduces the impact on the engine envelope radius and overall weight compared to the traditional centralized exhaust mechanism of the air collection chamber and exhaust valve. Moreover, the deflation mechanism has a simple structure, high reliability and low cost;
(2)本申请通过在密封静环上连接密封胶圈，增强了密封动环与密封静环之间的密封效果，同时采用硫化工艺将密封胶圈连接在胶圈槽内，使密封胶圈的连接更加的稳定，同样也能起到增强密封效果的作用；(2) This application enhances the sealing effect between the dynamic seal ring and the static seal ring by connecting the sealing rubber ring to the sealing static ring. At the same time, the vulcanization process is used to connect the sealing rubber ring in the rubber ring groove, so that the sealing rubber ring The connection is more stable and can also enhance the sealing effect;
(3)本申请在构成密封动环的圆弧面两端分别设置楔形配合的榫和榫槽，榫与榫槽小过盈配合，即可实现多瓣对称结构之间的径向定位。(3) In this application, wedge-shaped tenons and tenon grooves are respectively provided at both ends of the arc surface constituting the sealing dynamic ring. The tenons and tenon grooves have a small interference fit, so that the radial positioning between the multi-lobed symmetrical structures can be achieved.
附图说明Description of the drawings
图1是本发明中一种涡轮发动机用放气机构的结构示意图；Figure 1 is a schematic structural diagram of a bleed mechanism for a turbine engine in the present invention;
图2是本发明中密封静环的结构示意图；Figure 2 is a schematic structural diagram of the sealing static ring in the present invention;
图3是本发明中密封动环的结构示意图；Figure 3 is a schematic structural diagram of the dynamic seal ring in the present invention;
图4是本发明中形成密封动环的圆弧面的结构示意图。Figure 4 is a structural schematic diagram of the arc surface forming the sealing dynamic ring in the present invention.
附图标记：01-密封静环，02-轴向挡板，03-作动装置，04-安装固定座，05-密封动环，06-发动机机匣，07-排气孔，08-密封胶圈，09-圆弧面，10-榫槽，11-榫。Reference symbols: 01-seal static ring, 02-axial baffle, 03-actuating device, 04-installation fixed seat, 05-seal moving ring, 06-engine casing, 07-exhaust hole, 08-seal Rubber ring, 09-arc surface, 10-tongue and groove, 11-tenon.
具体实施方式Detailed ways
为使本发明实施例的目的、技术方案和优点更加清楚，下面将结合本发明实施例中的附图，对本发明实施例中的技术方案进行清楚、完整地描述。In order to make the purpose, technical solutions and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention.
实施例1Example 1
参照图1-4，该实施例提供一种涡轮发动机用放气机构，包括一体化集成在发动机机匣06外侧的密封静环01，密封静环01具有倾角斜面，倾角斜面上设置有多个排气孔07，排气孔07避开发动机机匣06内部叶片并均匀分布在倾角斜面上；密封静环01外侧贴合有密封动环05，密封静环01与密封动环05的 斜面结合处轴向端面通过轴向挡板02连接锁紧，轴向挡板02上连接有作动装置03；密封动环05与密封静环01之间连接有密封结构。Referring to Figures 1-4, this embodiment provides a bleed mechanism for a turbine engine, including a static sealing ring 01 integrated on the outside of the engine casing 06. The static sealing ring 01 has an inclined inclined surface, and a plurality of Exhaust hole 07, the exhaust hole 07 avoids the internal blades of the engine casing 06 and is evenly distributed on the inclined surface; the outer side of the sealing static ring 01 is fitted with the sealing dynamic ring 05, and the sealing static ring 01 is combined with the slope of the sealing dynamic ring 05 The axial end surface is connected and locked by the axial baffle 02, and the axial baffle 02 is connected with the actuating device 03; the sealing structure is connected between the sealing moving ring 05 and the sealing stationary ring 01.
其中作动装置03在轴向运动时，需要克服两部分载荷，其一是压气机工作时的气压轴向分力；其二是压缩密封结构以达到密封效果，为保证作动装置03可以提供足够且均匀的轴向压力，在圆周上可均匀布置多台作动装置03，可有效确保密封结构的可靠工作。When the actuator 03 moves axially, it needs to overcome two parts of the load. One is the axial component of the air pressure when the compressor is working; the other is the compressed sealing structure to achieve the sealing effect. To ensure that the actuator 03 can provide With sufficient and uniform axial pressure, multiple actuators 03 can be evenly arranged on the circumference, which can effectively ensure the reliable operation of the sealing structure.
工作原理：该放气机构通过调整密封动环05与密封静环01之间的轴向距离来实现放气与密封，密封状态下，密封静环01由作动装置03来施加载荷，挤压密封结构来实现密封，当需要放气时，作动装置03带动密封动环05轴向移动，使压气机内压缩空气从密封静环01的排气孔07进入密封动环05与密封静环01之间的环形通道，并沿轴向向两侧排气，运动过程中，可通过控制密封动环05轴向位移来控制排气面积，在放气结束后，作动装置03再向相反的方向作动，拉动密封动环05回到初始位置，即可将放气机构关闭。Working principle: The deflation mechanism realizes deflation and sealing by adjusting the axial distance between the dynamic seal ring 05 and the static seal ring 01. In the sealing state, the static seal ring 01 is loaded by the actuator 03 and squeezed. The sealing structure is used to achieve sealing. When it is necessary to deflate, the actuator 03 drives the sealing dynamic ring 05 to move axially, so that the compressed air in the compressor enters the sealing dynamic ring 05 and the sealing static ring from the exhaust hole 07 of the sealing static ring 01 01, and exhaust to both sides along the axial direction. During the movement, the exhaust area can be controlled by controlling the axial displacement of the sealing ring 05. After the exhaust is completed, the actuator 03 moves in the opposite direction. direction, pull the sealing ring 05 back to the initial position, and the bleed mechanism can be closed.
本申请的放气机构，在相同放气量的条件下，相比于传统的集气腔和放气活门的集中放气机构，显著降低了对发动机包络半径及整体重量的影响，且该放气机构的结构简单，可靠性高，成本也低。The bleeder mechanism of the present application, under the condition of the same bleeder amount, significantly reduces the impact on the engine envelope radius and overall weight compared to the traditional centralized bleeder mechanism of the air collection chamber and bleeder valve, and the bleeder mechanism The pneumatic mechanism has a simple structure, high reliability and low cost.
实施例2Example 2
参照图1-4，基于实施例1，该实施例的密封结构包括设置在所述密封静环01的倾角斜面上的胶圈槽，胶圈槽内连接有密封胶圈08，密封胶圈08通过硫化固定在胶圈槽内。Referring to Figures 1-4, based on Embodiment 1, the sealing structure of this embodiment includes a rubber ring groove provided on the inclination of the sealing stationary ring 01. A sealing rubber ring 08 is connected in the rubber ring groove. The sealing rubber ring 08 Fixed in the rubber ring groove by vulcanization.
在实现密封时，通过作动装置03施加的载荷压缩硫化固定在密封静环01上的密封胶圈08即可实现密封。When sealing is achieved, sealing can be achieved by compressing and vulcanizing the sealing rubber ring 08 fixed on the static sealing ring 01 through the load exerted by the actuator 03 .
本申请通过在密封静环01上连接密封胶圈08，增强了密封动环05与密封静环01之间的密封效果，同时采用硫化工艺将密封胶圈08连接在胶圈槽内，使密封胶圈08的连接更加的稳定，同样也能起到增强密封效果的作用。This application enhances the sealing effect between the dynamic seal ring 05 and the static seal ring 01 by connecting the sealing rubber ring 08 to the sealing static ring 01. At the same time, a vulcanization process is used to connect the sealing rubber ring 08 in the rubber ring groove to make the seal The connection of rubber ring 08 is more stable and can also enhance the sealing effect.
实施例3Example 3
参照图1-4，基于实施例1，该实施例的作动装置03包括电动推杆，发动机机匣06上连接有安装固定座04，电动推杆一端连接在安装固定座04上，另一端连接密封动环05。Referring to Figures 1-4, based on Embodiment 1, the actuating device 03 of this embodiment includes an electric pushrod. The engine casing 06 is connected to a mounting fixture 04. One end of the electric pushrod is connected to the mounting fixture 04, and the other end of the electric pushrod is connected to the mounting fixture 04. Connect the sealing ring 05.
其中电动推杆根据实际情况进行选择，同时考虑载荷、行程、作动速度，选取小尺寸的产品，以控制作动装置03的尺寸与重量。Among them, the electric push rod is selected according to the actual situation, taking into account the load, stroke, and actuation speed, and selecting a small-sized product to control the size and weight of the actuator 03.
实施例4Example 4
参照图1-4，基于实施例1，该实施例的密封动环05的圆周上采用多瓣中心对称结构；构成密封动环05的圆弧面09两端分别设置楔形配合的榫11和榫槽10。Referring to Figures 1-4, based on Embodiment 1, the sealing dynamic ring 05 of this embodiment adopts a multi-lobed centrally symmetrical structure on the circumference; the two ends of the arc surface 09 constituting the sealing dynamic ring 05 are respectively provided with wedge-shaped tenons 11 and tenons. slot 10.
其中，所述榫11与榫槽10小过盈配合，过盈配合面处涂抹有密封胶。Among them, the tenon 11 and the tenon groove 10 have a small interference fit, and sealant is applied to the interference fit surface.
在拼装密封动环05时，在过盈配合面处涂抹适量的密封胶，保证密封动环05本身的密封可靠性。When assembling the dynamic seal ring 05, apply an appropriate amount of sealant on the interference fit surface to ensure the sealing reliability of the dynamic seal ring 05 itself.
本申请在构成密封动环05的圆弧面09两端分别设置楔形配合的榫11和榫槽10，榫与榫槽10小过盈配合，即可实现多瓣对称结构之间的径向定位。In this application, wedge-shaped tenons 11 and tenon grooves 10 are respectively provided at both ends of the arc surface 09 constituting the sealing dynamic ring 05. The tenons and tenon grooves 10 have a small interference fit to achieve radial positioning between multi-lobed symmetrical structures. .
实施例5Example 5
参照图1-4，基于实施例1，该实施例的密封动环05前端面设置有用于与轴向挡板02连接有的螺纹孔。Referring to Figures 1-4, based on Embodiment 1, the front end surface of the sealing dynamic ring 05 in this embodiment is provided with a threaded hole for connecting with the axial baffle 02.
在安装轴向挡板02与密封动环05之间的连接螺栓时，应保证周向均匀受力，必要时可对安装孔进行适当修配，避免电动推杆产生过大预应力。When installing the connecting bolts between the axial baffle 02 and the sealing dynamic ring 05, uniform force in the circumferential direction should be ensured. If necessary, the mounting holes can be appropriately modified to avoid excessive prestress on the electric push rod.
实施例6Example 6
参照图1-4，基于实施例1，该实施例的密封动环05行程最大时，密封动环05与密封静环01锥面间距离应大于放气要求值。Referring to Figures 1-4, based on Embodiment 1, when the stroke of the dynamic seal ring 05 in this embodiment is maximum, the distance between the conical surfaces of the dynamic seal ring 05 and the static seal ring 01 should be greater than the required value for air release.
如果密封动环05与密封静环01锥面之间的距离不满足要求，可通过修配安装固定座04或轴向挡板02安装边的厚度进行调整。If the distance between the conical surface of the dynamic seal ring 05 and the static seal ring 01 does not meet the requirements, it can be adjusted by modifying the thickness of the mounting base 04 or the mounting edge of the axial baffle 02.

Claims (8)

  1. 一种涡轮发动机用放气机构，其特征在于，包括一体化集成在发动机机匣(06)外侧的密封静环(01)，所述密封静环(01)具有倾角斜面，所述倾角斜面上设置有多个排气孔(07)，所述排气孔(07)避开发动机机匣(06)内部叶片并均匀分布在倾角斜面上；所述密封静环(01)外侧贴合有密封动环(05)，所述密封静环(01)与所述密封动环(05)的斜面结合处轴向端面通过轴向挡板(02)连接锁紧，所述轴向挡板(02)上连接有作动装置(03)；所述密封动环(05)与所述密封静环(01)之间连接有密封结构。A bleed mechanism for a turbine engine, characterized in that it includes a static sealing ring (01) integrated on the outside of the engine casing (06), the static sealing ring (01) has an inclined inclined surface, and the inclined inclined surface A plurality of exhaust holes (07) are provided. The exhaust holes (07) avoid the internal blades of the engine casing (06) and are evenly distributed on the inclined surface; the sealing stationary ring (01) is fitted with a seal on the outside. The moving ring (05), the axial end surface of the inclined surface junction of the sealing stationary ring (01) and the sealing moving ring (05) is connected and locked through an axial baffle (02), and the axial baffle (02) ) is connected to an actuating device (03); a sealing structure is connected between the dynamic sealing ring (05) and the static sealing ring (01).
  2. 根据权利要求1所述的一种涡轮发动机用放气机构，其特征在于，所述密封结构包括设置在所述密封静环(01)的倾角斜面上的胶圈槽，所述胶圈槽内连接有密封胶圈(08)，所述密封胶圈(08)通过硫化固定在胶圈槽内。A bleed mechanism for a turbine engine according to claim 1, characterized in that the sealing structure includes a rubber ring groove provided on the inclined surface of the sealing stationary ring (01), and the rubber ring groove is A sealing rubber ring (08) is connected, and the sealing rubber ring (08) is fixed in the rubber ring groove through vulcanization.
  3. 根据权利要求1所述的一种涡轮发动机用放气机构，其特征在于，所述作动装置(03)包括电动推杆，所述发动机机匣(06)上连接有安装固定座(04)，所述电动推杆一端连接在所述安装固定座(04)上，另一端连接密封动环(05)。A bleed mechanism for a turbine engine according to claim 1, characterized in that the actuating device (03) includes an electric push rod, and the engine casing (06) is connected to a mounting fixing seat (04) , one end of the electric push rod is connected to the installation fixed seat (04), and the other end is connected to the sealing dynamic ring (05).
  4. 根据权利要求1所述的一种涡轮发动机用放气机构，其特征在于，所述密封动环(05)的圆周上采用多瓣中心对称结构；构成密封动环(05)的圆弧面(09)两端分别设置楔形配合的榫(11)和榫槽(10)。A venting mechanism for a turbine engine according to claim 1, characterized in that the circumference of the sealing dynamic ring (05) adopts a multi-lobed center-symmetric structure; the arc surface ( 09) Both ends are provided with wedge-shaped tenon (11) and tenon groove (10) respectively.
  5. 根据权利要求4所述的一种涡轮发动机用放气机构，其特征在于，所述榫(11)与榫槽(10)小过盈配合，过盈配合面处涂抹有密封胶。The exhaust mechanism for a turbine engine according to claim 4, characterized in that the tenon (11) and the tenon groove (10) have a small interference fit, and sealant is applied to the interference fit surface.
  6. 根据权利要求1所述的一种涡轮发动机用放气机构，其特征在于，所述密封动环(05)前端面设置有用于与轴向挡板(02)连接有的螺纹孔。The exhaust mechanism for a turbine engine according to claim 1, characterized in that the front end surface of the sealing dynamic ring (05) is provided with a threaded hole for connecting with the axial baffle (02).
  7. 根据权利要求1所述的一种涡轮发动机用放气机构，其特征在于，当所述密封动环(05)行程最大时，所述密封动环(05)与所述密封静环(01)锥面间距离应大于放气要求值。The exhaust mechanism for a turbine engine according to claim 1, characterized in that when the stroke of the sealing moving ring (05) is maximum, the sealing moving ring (05) and the sealing stationary ring (01) The distance between cone surfaces should be greater than the required value for deflation.
  8. 根据权利要求1～7任意一项所述的涡轮发动机用放气机构，其特征在于，放气机构的安装方法为：将安装固定座(04)与发动机机匣(06)连接固定，再将电 动推杆固定在安装固定座(04)上，然后将密封动环(05)的多瓣弧形块轴向贴合在密封静环(01)外侧后，再互相轴向压入榫槽(10)配合，再将轴向挡板(02)与密封动环(05)前端面贴合且暂不安装螺栓固定，贴合后一起沿轴向移动，对准轴向挡板(02)的安装孔与电动推杆前端的安装凸台后，将电动推杆前端固定与轴向挡板(02)上，然后再安装轴向挡板(02)与密封动环(05)之间的连接螺栓，安装此螺栓时，应保证周向均匀受力。The exhaust mechanism for a turbine engine according to any one of claims 1 to 7, characterized in that the installation method of the exhaust mechanism is: connecting and fixing the installation fixing base (04) to the engine casing (06), and then attaching the exhaust mechanism to the engine casing (06). The electric push rod is fixed on the mounting base (04), and then the multi-petal arc-shaped block of the sealing dynamic ring (05) is axially attached to the outside of the sealing static ring (01), and then axially pressed into each other into the tenon groove ( 10) Match, and then fit the axial baffle (02) and the front end surface of the sealing dynamic ring (05) without installing bolts for the time being. After fitting, move them together in the axial direction and align them with the axial baffle (02). After installing the mounting hole and the mounting boss at the front end of the electric push rod, fix the front end of the electric push rod to the axial baffle (02), and then install the connection between the axial baffle (02) and the sealing dynamic ring (05) Bolt, when installing this bolt, ensure uniform force in the circumferential direction.
PCT/CN2022/122551 2022-07-06 2022-10-14 Air-bleed mechanism for turbine engine WO2024007460A1 (en)

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CN202210786690.2A CN115013090B (en) 2022-07-06 2022-07-06 Air bleeding mechanism for turbine engine

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CN114109646A (en) * 2021-11-30 2022-03-01 四川航天中天动力装备有限责任公司 Clamping ring type two-stage adjustable exhaust system, engine and aircraft
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