Oil flinger of aero-engine

Abstract

The utility model discloses an aero-engine oil flinger, which relates to the field of aero-engine combustion chambers and comprises an oil flinger main body, an oil flinger cavity is arranged inside the oil flinger main body, a plurality of oil outlets are arranged on the surface of the inner side of the oil flinger cavity and penetrate through the oil flinger main body, and one side of the oil flinger main body is connected with a central center plate. A throttling hole is formed in the inner side of the central center plate, one side of the throttling hole is matched with the oil throwing cavity in position, a plurality of impellers are connected to the surface of the central center plate and distributed at equal intervals, and an oil throwing disc baffle is connected to the other side of the oil throwing disc body. According to the oil flinger of the aero-engine, the structure of the main body part of the oil flinger is improved, the problems of fuel distribution uniformity, fuel distribution sensitivity and the like of the oil injection holes can be improved, the core competitiveness of related products is improved, and development of related industrial chains is promoted.

Description

Technical Field

[0001] The utility model relates to the field of aero-engine combustion chambers, and particularly relates to an aero-engine fuel slinger disc. Background Art

[0002] High rotational speed and compact structure are the prominent features of small aero-engines. At present, most small aero-engines adopt a structural form of a baffle-type combustion chamber combined with a centrifugal fuel slinger disc. The fuel slinger disc is a special type of fuel nozzle, which has the advantages of simple and compact structure, light weight, good atomization performance at high altitude, simple and rapid starting, etc. The fuel slinger disc is installed on the engine main shaft and rotates synchronously at a high speed with the main shaft. Fuel is slung from the small holes at the edge of the fuel slinger disc to the head of the annular combustion chamber. The fuel is affected by the centrifugal force and interacts with air, breaking and atomizing. For an engine using a fuel slinger disc fuel nozzle, the combustion efficiency is relatively high, and it also has a cooling effect on the shaft rotating at a high speed, and preheats the fuel, which is beneficial to atomization, evaporation, combustion organization and component protection;

[0003] At present, the structural form of the fuel slinger disc is mostly of the fuel slinger hole type. The fuel atomization cone angle is relatively small, the fuel discharge amount of each oil hole is not uniform enough, and the breaking and atomization effect needs to be improved, which is not conducive to the mixing of oil and gas in the flame tube;

[0004] Therefore, the utility model provides an aero-engine fuel slinger disc. Content of the Utility Model

[0005] The main purpose of the utility model is to provide an aero-engine fuel slinger disc to solve the problems raised in the background art.

[0006] To achieve the above purpose, the technical solution adopted by the utility model is: an aero-engine fuel slinger disc, including a fuel slinger disc main body, wherein a fuel slinging chamber is arranged inside the fuel slinger disc main body, a plurality of oil outlet holes are arranged on the inner side surface of the fuel slinging chamber, and all the plurality of oil outlet holes penetrate through the fuel slinger disc main body. One side of the fuel slinger disc main body is connected with a central web plate, a throttle hole is arranged inside the central web plate, one side of the throttle hole is adapted to the position of the fuel slinging chamber, a plurality of impellers are connected to the surface of the central web plate, and all the plurality of impellers are evenly distributed at equal intervals. The other side of the fuel slinger disc main body is connected with a fuel slinger disc baffle.

[0007] Preferably, the fuel slinger disc baffle is snap-connected with the fuel slinger disc main body, and the central web plate is welded to the fuel slinger disc main body, with strong structural advantages.

[0008] Preferably, all the plurality of oil outlet holes are obliquely arranged, and the fuel slinging efficiency is high.

[0009] Preferably, the inner diameter of the throttle hole is smaller than the inner diameter of the fuel slinging chamber, effectively forming a throttling effect.

[0010] Preferably, the fuel slinger disc main body is connected with the engine main shaft.

[0011] The utility model has the following beneficial effects:

[0012] An oil slinger for an aeroengine of the utility model can enable fuel to obtain higher rotational kinetic energy, pressure, etc. by adopting a structure with an impeller, a web plate, a throttle port and an oil outlet, improves the structure of the main body on the basis of a traditional oil slinger, reduces the oil supply pressure, and eliminates the use of a high-pressure oil supply device. Description of the Drawings

[0013] Figure 1 is a schematic diagram of the overall structure of an oil slinger for an aeroengine of the utility model;

[0014] Figure 2 is a sectional view taken along the line A-A of an oil slinger for an aeroengine of the utility model Figure 1 ;

[0015] Figure 3 is a partial enlarged view at position B of an oil slinger for an aeroengine of the utility model Figure 2 ;

[0016] Figure 4 is a sectional view taken along the line E-E of an oil slinger for an aeroengine of the utility model Figure 1 ;

[0017] Figure 5 is a schematic diagram of the bottom surface structure of an oil slinger for an aeroengine of the utility model.

[0018] In the figures: 1, oil slinger main body; 2, oil slinger baffle; 3, central web plate; 4, throttle hole; 5, oil slinging cavity; 6, oil outlet hole; 7, impeller. Detailed Embodiment

[0019] To make the above objects, features, and advantages of the present utility model more obvious and understandable, the following will describe in detail the specific embodiments of the present utility model with reference to the accompanying drawings. Many specific details are set forth in the following description to fully understand the present utility model. However, the present utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without departing from the connotation of the present utility model. Therefore, the present utility model is not limited by the specific embodiments disclosed below. In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present utility model.

[0020] In the present utility model, unless otherwise clearly defined and limited, the terms "installation", "connection", "connection", "fixation", etc. should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements or the interaction relationship between two elements, unless otherwise clearly limited. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0021] Embodiment 1

[0022] Please refer to Figures 1-5 As shown, the present utility model is an oil slinger for an aeroengine, including an oil slinger main body 1. An oil slinging cavity 5 is arranged inside the oil slinger main body 1. A number of oil outlet holes 6 (18 groups of oil outlet holes 6 are provided, among which 12 have an oil outlet direction forward and 6 have an oil outlet direction backward) are arranged on the inner surface of the oil slinging cavity 5. A number of oil outlet holes 6 all penetrate through the oil slinger main body 1. One side of the oil slinger main body 1 is connected with a central web 3. A throttling hole 4 is arranged inside the central web 3. One side of the throttling hole 4 is adapted to the position of the oil slinging cavity 5. A number of impellers 7 (6 groups of impellers 7 are provided) are connected to the surface of the central web 3. A number of impellers 7 are evenly distributed at equal intervals. The other side of the oil slinger main body 1 is connected with an oil slinger baffle 2.

[0023] Among them, the oil slinger baffle 2 is snap-connected to the oil slinger body 1, and the central web 3 is welded to the oil slinger body 1, which is convenient for operation and use; a number of oil outlet holes 6 are all obliquely arranged to facilitate the ejection of fuel; the inner diameter of the throttle hole 4 is smaller than the inner diameter of the oil slinging cavity 5 to form a throttling effect; the oil slinger body 1 is connected to the engine main shaft, and the engine use efficiency is improved.

[0024] The utility model relates to an oil slinger for an aeroengine. Six impellers 7 are circumferentially and evenly distributed in the incoming oil direction of the oil slinger. The impellers 7 are connected to the central web 3 and the oil slinger body 1. The oil slinger rotates at a high speed along with the rotor shaft. The impellers 7 sling the fuel to the inner wall surface, so that the fuel obtains a high rotational kinetic energy. At the same time, under the action of the central web 3 and the throttle hole 4, the fuel pressure increases, and the high-pressure fuel supply device is omitted; oil outlet holes 6 are formed in the outer wall of the oil slinger. Eighteen oil outlet holes 6 are circumferentially and evenly distributed. Twelve of them have the oil outlet direction forward, and six of them have the oil outlet direction backward. The oil mist is sheared in cooperation with the intake air of the baffle combustion chamber to further break up the oil droplets, improve the atomization quality, and make the oil and gas mix evenly.

[0025] Embodiment 2

[0026] The utility model relates to an oil slinger for an aeroengine, which includes an oil slinger body 1. An oil slinging cavity 5 is arranged inside the oil slinger body 1. A number of oil outlet holes 6 are arranged on the inner side surface of the oil slinging cavity 5. A number of oil outlet holes 6 all penetrate through the oil slinger body 1. One side of the oil slinger body 1 is connected with a central web 3. A throttle hole 4 is arranged inside the central web 3. One side of the throttle hole 4 corresponds to the position of the oil slinging cavity 5. A number of impellers 7 are connected to the surface of the central web 3. A number of impellers 7 are evenly distributed at equal intervals. The other side of the oil slinger body 1 is connected with an oil slinger baffle 2. The oil slinger baffle 2 is snap-connected to the oil slinger body 1. The central web 3 is welded to the oil slinger body 1. A number of oil outlet holes 6 are all obliquely arranged. The inner diameter of the throttle hole 4 is smaller than the inner diameter of the oil slinging cavity 5. The oil slinger body 1 is connected to the engine main shaft.

[0027] This solution is "not limited to the number of impellers 7", "not limited to the size of the throttle port 4", "not limited to the number and size of the oil outlet ports 6", and "not limited to the distribution mode of the oil outlet ports 6".

[0028] In the description of this specification, the descriptions referring to terms such as "one embodiment", "example", "specific example", etc. mean that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in a suitable manner in any one or more embodiments or examples.

[0029] The preferred embodiments of the present utility model disclosed above are only used to help illustrate the present utility model. The preferred embodiments do not describe all the details in detail, nor do they limit the present utility model to only the specific embodiments. Obviously, many modifications and variations can be made according to the content of this specification. These embodiments are selected and specifically described in this specification in order to better explain the principle and practical application of the present utility model, so that those skilled in the relevant technical field can well understand and utilize the present utility model. The present utility model is only limited by the claims and their full scope and equivalents.

Claims

1. An oil slinger for an aeroengine, characterized in that: It includes an oil slinger body (1), an oil slinging cavity (5) is arranged inside the oil slinger body (1), a plurality of oil outlet holes (6) are arranged on the inner side surface of the oil slinging cavity (5), and a plurality of the oil outlet holes (6) all penetrate through the oil slinger body (1). One side of the oil slinger body (1) is connected with a central web (3), a throttling hole (4) is arranged inside the central web (3), one side of the throttling hole (4) is adapted to the position of the oil slinging cavity (5), a plurality of impellers (7) are connected to the surface of the central web (3), and a plurality of the impellers (7) are evenly distributed at equal intervals. The other side of the oil slinger body (1) is connected with an oil slinger baffle (2).

2. The oil slinger of an aeroengine according to claim 1, wherein: The oil slinger baffle (2) is snap-connected with the oil slinger body (1), and the central web (3) is welded to the oil slinger body (1).

3. The oil slinger of an aeroengine according to claim 1, characterized in that: A plurality of the oil outlet holes (6) are all obliquely arranged.

4. The oil slinger of an aero-engine according to claim 1, wherein: The inner diameter of the throttling hole (4) is smaller than the inner diameter of the oil slinging cavity (5).

5. The oil slinger of an aeroengine according to claim 1, wherein: The oil slinger body (1) is connected with the engine main shaft.

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