Cleaning device for bearing sleeve of turbojet engine

Abstract

The utility model discloses a cleaning device for a bearing sleeve of a turbojet engine, which is characterized in that a first sealing element and a second sealing component block the bottom end of the bearing sleeve and an oil outlet between an inlet and an outlet of a lubricating oil circuit pipeline, so that a cleaning medium can only flow into the lubricating oil circuit pipeline from a first through hole in the second sealing component; the first through hole is communicated with the second through hole through a cleaning circulation pipeline so as to be communicated with the lubricating oil way pipeline to form a circulation loop for cleaning the lubricating oil way pipeline; the third sealing assembly blocks the top end of the bearing seat sleeve and the inner wall of the hollow cavity, it is ensured that a cleaning medium can only flow into the cooling gas path pipeline from a third through hole in the second sealing assembly and flow out of a gas inlet of the cooling gas path pipeline, and the third through hole communicates with the gas inlet of the cooling gas path pipeline through a cleaning circulation pipeline. And a circulation loop for cleaning the cooling air channel pipeline is formed by communicating with the cooling air channel pipeline.

Description

Technical Field

[0001] The utility model relates to the technical field of maintaining aviation machinery parts, in particular to a cleaning device for a bearing seat sleeve of a turbojet engine. Background Art

[0002] The front end of the turbojet engine bearing seat sleeve is connected to the diffuser assembly, the rear end is connected to the turbine guide, and the inner holes at both ends are equipped with front and rear bearings. The turbojet engine bearing seat sleeve is an annular hollow rotating body. The annular wall of the rotating body is provided with inner and outer layers of flow channels that are isolated from each other. The inner layer is a lubricating oil pipeline, and the oil channel inlet and outlet are both located on the end face of one end of the turbojet engine bearing seat sleeve; the outer layer is a cooling gas pipeline, the air inlet is twelve circumferentially evenly distributed on the outer wall of the turbojet engine bearing seat sleeve, and the air outlet is a narrow annular groove, which is located on the end face of the other end of the turbojet engine bearing seat sleeve. The air outlet groove and air inlet of the air channel are both located above the oil channel inlet and outlet. There are twelve chambers spaced circumferentially inside the air channel; when the engine is in use, the gas and oil in the cavity pass through the front and rear bearings. If there is excess material, especially excess material in the oil channel, it may cause the bearing to be obstructed from rotating or even stuck.

[0003] Due to the complex internal structure of the lubricating oil pipeline and the cooling gas pipeline, the large number of end faces and pipeline through-holes of the turbojet engine bearing seat sleeve, the narrow sealing area, and the waste of cleaning medium caused by the long cleaning time, it is urgently necessary to design a cleaning device that can maintain a constant cleaning pressure and circulate and flush the turbojet engine bearing seat sleeve for a long time during the cleaning process, so as to ensure that the cleaning medium can fully enter and cover all parts of the complex oil and gas pipelines, so as to achieve a thorough cleaning effect. Utility Model Content

[0004] The purpose of the utility model is mainly achieved through the following technical solutions:

[0005] The present utility model provides a cleaning device for a bearing housing sleeve of a turbojet engine. It uses a first seal and a second seal assembly in cooperation to seal the end face at the bottom of the bearing housing sleeve of the turbojet engine and the oil outlet hole between the inlet and outlet of the lubricating oil pipeline, so as to prevent the cleaning medium from overflowing through the inlet and outlet from the end face at the bottom of the bearing housing sleeve of the turbojet engine and / or the oil outlet hole between the inlet and outlet of the lubricating oil pipeline, thus avoiding the phenomenon of unstable pressure in the lubricating oil pipeline during cleaning caused by poor sealing. Through the plugging cooperation of the first seal and the second seal assembly, it is ensured that the cleaning medium can only flow into the lubricating oil pipeline through the first through hole on the second seal assembly and can only flow out through the second through hole on the second seal assembly, delivering the cleaning medium into the lubricating oil pipeline and keeping the cleaning pressure of the cleaning medium constant in the lubricating oil pipeline. In addition, after the cleaning medium flows out through the second through hole and collects in the medium recovery tank, the medium transfer pump delivers the cleaning medium to the first through hole again, enabling the cleaning medium in the lubricating oil pipeline to flow out through the second through hole and then enter the lubricating oil pipeline through the first through hole again, achieving the effect of long-term cyclic flushing of the lubricating oil pipeline, thereby realizing constant-pressure cyclic cleaning of the lubricating oil pipeline. The purpose of keeping the cleaning medium at a constant pressure in the lubricating oil pipeline during flushing is to ensure that the cleaning medium can fully enter and cover all parts of the complex oil pipeline, including difficult-to-clean parts such as corners, depressions, and protrusions in the lubricating oil pipeline. Long-term cyclic flushing ensures thorough cleaning of the lubricating oil pipeline while not wasting resources and making full use of the cleaning medium to thoroughly remove the excess substances in the oil pipeline.

[0006] The cleaning device uses a third seal assembly to seal the top end face and the hollow cavity of the bearing housing sleeve of the turbojet engine, so as to prevent the cleaning medium from overflowing through the air outlet groove from the top end face of the bearing housing sleeve of the turbojet engine and / or the inner wall of the hollow cavity, thus avoiding the phenomenon of unstable pressure in the cooling air pipeline during cleaning caused by poor sealing. Through the plugging of the third seal assembly, it is ensured that the cleaning medium can only flow into the air outlet groove through the third through hole on the second sealing plate and then flow into the cooling air pipeline through the air outlet of the air outlet groove, and can only flow out through the air inlet on the outer wall of the bearing housing sleeve of the turbojet engine, delivering the cleaning medium into the cooling air pipeline and keeping the cleaning pressure of the cleaning medium constant in the cooling air pipeline. In addition, after the cleaning medium flows out through the air inlet on the outer wall of the bearing housing sleeve of the turbojet engine and collects in the medium recovery tank, the medium recovery tank delivers the cleaning medium to the third through hole again through the medium transfer pump, enabling the cleaning medium in the cooling air pipeline to flow out through the air inlet on the outer wall of the bearing housing sleeve of the turbojet engine and then enter the cooling air pipeline through the third through hole again, achieving the effect of long-term cyclic flushing of the cooling air pipeline.

[0007] The present utility model provides a cleaning device for a bearing housing sleeve of a turbojet engine, which comprises:

[0008] The first seal, which closes the oil outlet hole at the position between the inlet and outlet of the lubricating oil pipeline inside the bearing housing sleeve of the turbojet engine.

[0009] The second seal assembly, on which there are a first through hole and a second through hole, and the second seal assembly is sealingly connected to the end face at the bottom of the bearing housing sleeve of the turbojet engine.

[0010] The first through hole and the second through hole are respectively communicated with the inlet and outlet of the lubricating oil pipeline inside the bearing housing sleeve of the turbojet engine.

[0011] The first through hole is communicated with the second through hole through a cleaning circulation pipeline to form a circulation loop for cleaning the lubricating oil pipeline in connection with the lubricating oil pipeline.

[0012] Furthermore, the second seal assembly includes a first sealing plate and a second seal.

[0013] The first sealing plate is arranged at the bottom of the bearing housing sleeve of the turbojet engine to seal the port position at the bottom of the latter.

[0014] The first through hole and the second through hole are arranged on the plate body of the first sealing plate.

[0015] The second seal is pressed between the first sealing plate and the end face of the bearing housing sleeve of the turbojet engine.

[0016] Furthermore, the first sealing plate is connected to the bottom of the bearing housing sleeve of the turbojet engine by a first screw passing through its plate body.

[0017] Furthermore, a gasket is arranged between the first sealing plate and the head of the first screw.

[0018] Furthermore, the device further includes:

[0019] The third seal assembly, on which there is a third through hole, and the third seal assembly is sealingly connected to the end face at the top of the bearing housing sleeve of the turbojet engine.

[0020] The third through hole is communicated with the air outlet groove of the cooling air pipeline inside the bearing housing sleeve of the turbojet engine.

[0021] The third through hole is communicated with the cleaning circulation pipeline to form a circulation loop for cleaning the cooling air pipeline in connection with the cooling air pipeline.

[0022] Furthermore, the third seal assembly includes a second sealing plate, a third seal, and a fourth seal.

[0023] The second sealing plate is arranged at the top of the bearing housing sleeve of the turbojet engine to seal the port and the hollow cavity position at the top of the latter.

[0024] The third through hole is provided on the plate body of the second sealing plate;

[0025] The third seal is pressed between the bearing housing sleeve of the turbojet engine and the second sealing plate;

[0026] The fourth seal is pressed between the second sealing plate and the inner wall of the hollow cavity of the bearing housing sleeve of the turbojet engine.

[0027] Furthermore, the second sealing plate is connected to the top end of the bearing housing sleeve of the turbojet engine by a second screw passing through its plate body.

[0028] Furthermore, a gasket is provided between the second sealing plate and the head of the second screw.

[0029] Furthermore, a medium recovery device is also provided on the cleaning circulation pipeline. The medium recovery device is located below the bearing housing sleeve of the turbojet engine and partially surrounds the bearing housing sleeve of the turbojet engine, so as to recover and reuse the cleaning medium flowing out of the bearing housing sleeve of the turbojet engine;

[0030] A filter is also provided on the medium recovery device and / or the cleaning circulation pipeline;

[0031] A medium delivery pump and a pressure gauge are also provided on the cleaning circulation pipeline. The pressure gauge is located on one side of the medium output end of the medium delivery pump.

[0032] Furthermore, the medium recovery device includes a medium recovery tank and a medium recovery funnel. The medium recovery funnel is located above the medium recovery tank, and the filter is arranged in the medium recovery tank;

[0033] The medium recovery funnel partially surrounds the bearing housing sleeve of the turbojet engine, and the medium recovery tank is communicated with the cleaning circulation pipeline.

[0034] The cleaning device of this embodiment cooperates with the first seal and the second seal assembly to seal the end face at the bottom end of the bearing housing sleeve of the turbojet engine, as well as other oil outlet holes between the inlet and outlet of the oil pipeline, so that the fluid in the oil pipeline can only pass through the inlet and outlet of the lubricating oil pipeline, so as to ensure that the cleaning medium flowing into the lubricating oil pipeline maintains a constant pressure to clean all parts inside the pipeline, including difficult-to-clean parts such as corners, depressions and protrusions inside the pipeline; In addition, the medium recovery tank filters the cleaning medium flowing out of the oil pipeline and re-transports it into the oil pipeline through the first through hole, achieving the purpose of saving resources and recycling the cleaning medium to wash the oil pipeline.

[0035] The end face and the hollow cavity at the top of the bearing housing of the turbojet engine are sealed by the third sealing assembly, so that the fluid in the gas pipeline can only pass through the air outlet groove and the air inlet; in addition, the medium recovery tank filters the cleaning medium flowing out of the gas pipeline and then re-transports it into the gas pipeline through the third through hole, achieving the purpose of saving resources and recycling the cleaning medium to flush the oil pipeline. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] The drawings described herein are used to provide a further understanding of the embodiments of the present invention, form a part of this application, and do not limit the embodiments of the present invention. In the drawings:

[0037] Figure 1 is a schematic diagram of the cleaning device;

[0038] Figure 2 is a schematic diagram of the components of the cleaning device for sealing the upper and lower ends of the bearing housing of the turbojet engine;

[0039] Figure 3 is a schematic diagram of the first sealing plate;

[0040] Figure 4 is a schematic diagram of the second sealing plate.

[0041] The names corresponding to the reference numerals are:

[0042] 1 - First sealing plate; 2 - First through hole; 3 - Second through hole; 4 - Second seal; 5 - First seal; 6 - Medium recovery tank; 7 - Medium transfer pump; 8 - Second sealing plate; 9 - Third through hole; 10 - Third seal; 11 - Fourth seal; 12 - Medium recovery funnel; 13 - Filter; 14 - Cleaning circulation pipeline; 15 - Pressure gauge; 16 - First screw; 17 - Gasket; 18 - Second screw. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0043] To make the objectives, technical solutions and advantages of the present invention clearer and more understandable, the present invention will be further described in detail below with reference to the embodiments and the drawings. The illustrative embodiments and descriptions of the present invention are only used to explain the present invention and do not limit the present invention.

[0044] In the description of the present utility model, it should be understood that the orientation or positional relationships indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. are based on the orientation or positional relationships shown in the drawings. These 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. Therefore, it should not be construed as a limitation to the present utility model.

[0045] In addition, the terms "first" and "second" are only used for descriptive purposes and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present utility model, "a plurality of" means two or more unless otherwise specifically defined.

[0046] In the present utility model, unless otherwise clearly defined and limited, the terms such as "mounted", "connected", "connected to", "fixed", etc. should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two elements. 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.

[0047] In the present utility model, unless otherwise clearly defined and limited, the first feature being "on" or "under" the second feature may include the direct contact between the first and second features, or may include the situation where the first and second features are not in direct contact but in contact through other features between them. Moreover, the first feature being "above", "over" and "on top of" the second feature includes that the first feature is directly above and obliquely above the second feature, or merely indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature being "under", "beneath" and "underneath" the second feature includes that the first feature is directly below and obliquely below the second feature, or merely indicates that the horizontal height of the first feature is lower than that of the second feature.

[0048] In addition, the technical solutions between various embodiments can be combined with each other, but it must be based on the ability of those of ordinary skill in the art to implement. When the combination of technical solutions results in contradictions or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the scope of the disclosure of the present utility model.

[0049] In the following description, suffixes such as "module", "component", "assembly" or "unit" are only used to facilitate the description of the present utility model, and they have no specific meaning in themselves. Therefore, they can be used interchangeably.

[0050] The present utility model will be further described in detail below in conjunction with the accompanying drawings through specific embodiments.

[0051] According to an embodiment of the present utility model, as Figure 1 , Figure 2 and Figure 3 shown, a cleaning device for a bearing housing sleeve of a turbojet engine includes:

[0052] A first seal 5, which is hermetically connected to the oil outlet hole position between the inlet and outlet of the lubricating oil pipeline inside the bearing housing sleeve of the turbojet engine;

[0053] A second seal assembly, on which a first through hole 2 and a second through hole 3 are provided, and the second seal assembly is hermetically connected to the end face at the bottom end of the bearing housing sleeve of the turbojet engine;

[0054] The first through hole 2 and the second through hole 3 are respectively communicated with the inlet and outlet of the lubricating oil pipeline inside the bearing housing sleeve of the turbojet engine;

[0055] The first through hole 2 is communicated with the second through hole 3 through a cleaning circulation pipeline 14 to form a circulation loop for cleaning the lubricating oil pipeline in communication with the lubricating oil pipeline.

[0056] In this embodiment, the inventor of the present application, based on years of work experience and understanding of the components of the turbojet engine, found that under the condition of maintaining a preset constant cleaning pressure, the cleaning medium can clean the complex lubricating oil pipeline of the bearing housing sleeve of the turbojet engine more cleanly and thoroughly than cleaning the lubricating oil pipeline under general conditions; in addition, the cleaning time of the bearing housing sleeve of the turbojet engine is generally long. To avoid unnecessary waste of the cleaning medium, the inventor of the present application added a design of circulating cleaning under the condition of constant pressure cleaning, so that the oil pipeline of the bearing housing sleeve of the turbojet engine can be cleaned under constant pressure and in a circulating manner for a long time. Therefore, the cleaning device of this embodiment is proposed; as Figure 2As shown, the first seal 5 and the second seal assembly of the device cooperate to seal the end face at the bottom end of the bearing housing sleeve of the turbojet engine, and also seal other oil outlet holes between the inlet and outlet of the lubricating oil pipeline; wherein, the first seal 5 is a sealing pin and / or a sealing plug, and the second seal assembly includes a first sealing plate 1 and a second seal 4. The first sealing plate 1 is fixed to the end face at the bottom end of the bearing housing sleeve of the turbojet engine by screws. The second seal 4 can be a gasket, an O-ring or a combination of both, and is tightly pressed between the bearing housing sleeve of the turbojet engine and the first sealing plate 1. When the second seal 4 is a gasket, it is provided with an opening for the cleaning medium to flow from the first through hole 2 into the lubricating oil pipeline, and an opening for the cleaning medium to flow out from the lubricating oil pipeline to the second through hole 3; through the sealing effect of the above components, the cleaning medium flowing into the oil pipeline can only flow into the lubricating oil pipeline through the first through hole 2 via the inlet, and then flow out through the second through hole 3 via the outlet, so as to ensure that the cleaning medium flowing into the oil pipeline maintains a preset constant cleaning pressure to clean all parts inside the pipeline, including the difficult-to-clean corners, depressions and protrusions inside the pipeline, etc.; in addition, as Figure 1 As shown, the medium recovery tank 7 of the device is connected to the first through hole 1 through a cleaning circulation pipeline and a medium delivery pump 7 to form a constant-pressure circulating cleaning circuit for cleaning the lubricating oil pipeline, so that the cleaning medium flowing out from the second through hole 3 re-enters the lubricating oil pipeline from the first through hole 2, achieving the purpose of long-term circulating flushing of the lubricating oil pipeline, avoiding waste of cleaning resources and saving costs.

[0057] According to an embodiment of the present invention, as Figure 2 shown, the second seal assembly includes a first sealing plate 1 and a second seal 4;

[0058] The first sealing plate 1 is arranged at the bottom end of the bearing housing sleeve of the turbojet engine for sealing the port position at the bottom end of the latter;

[0059] The first through hole 2 and the second through hole 3 are arranged on the plate body of the first sealing plate 1;

[0060] The second seal 4 is tightly pressed between the first sealing plate 1 and the end face of the bearing housing sleeve of the turbojet engine.

[0061] In this embodiment, as Figure 2 shown, the first sealing plate 1 and the bearing housing sleeve of the turbojet engine form a concave-convex mating structure and are connected to the bottom end of the latter. The second seal 4 is tightly pressed on the concave-convex mating surface of the two to prevent the cleaning medium from overflowing from the mating surface between the bearing housing sleeve of the turbojet engine and the first sealing plate.

[0062] According to an embodiment of the present utility model, as Figure 2 shown, the first sealing plate 1 is connected to the bottom end of the bearing seat sleeve of the turbojet engine through a first screw 16 passing through its plate body.

[0063] In this embodiment, as Figure 2 shown, the advantage of fixing the first sealing plate 1 to the bottom end of the bearing seat sleeve of the turbojet engine through the first screw 16 is that it is convenient to disassemble after the lubricating oil pipeline of the bearing seat sleeve of the turbojet engine is flushed.

[0064] According to an embodiment of the present utility model, as Figure 2 shown, a gasket 17 is provided between the first sealing plate 1 and the head of the first screw 16.

[0065] In this embodiment, as Figure 2 shown, by providing a gasket 17 between the first sealing plate 1 and the head of the first screw 16, the connection between the first sealing plate 1 and the bottom end of the bearing seat sleeve of the turbojet engine is made more tightly and firmly. When vibration occurs due to flushing, the first screw 16 will not become loose, thus preventing the phenomenon of seal failure caused by the loosening of the first sealing plate 1 and the bearing seat sleeve of the turbojet engine.

[0066] According to an embodiment of the present utility model, as Figure 1 、 Figure 2 and Figure 4 shown, the cleaning device further includes:

[0067] A third sealing assembly, a third through hole 9 is provided on the third sealing assembly, and the third sealing assembly is sealingly connected to the end face at the top of the bearing seat sleeve of the turbojet engine;

[0068] The third through hole 9 is communicated with the air outlet groove of the cooling air pipeline inside the bearing seat sleeve of the turbojet engine;

[0069] The third through hole 9 is communicated with the cleaning circulation pipeline 14 to form a circulation loop for cleaning the cooling air pipeline in communication with the cooling air pipeline.

[0070] In this embodiment, as Figure 2As shown, the third sealing assembly of the device is used to seal the end face at the top of the bearing housing sleeve of the turbojet engine and the hollow cavity of the bearing housing sleeve of the turbojet engine; wherein, the third sealing assembly includes a second sealing plate 8, a third sealing member 10 and a fourth sealing member 11. The second sealing plate 8 is fixed to the top surface of the bearing housing sleeve of the turbojet engine by screws. The third sealing member 10 is a gasket pressed tightly between the end face of the bearing housing sleeve of the turbojet engine and the second sealing plate 8. The fourth sealing member 11 is an O-ring pressed tightly between the inner wall of the hollow cavity of the bearing housing sleeve of the turbojet engine and the second sealing plate 8. Through the sealing effect of the above components, the cleaning medium flowing into the gas pipeline can only flow into the cooling gas pipeline through the third through-hole 9 and the air outlet of the air outlet groove, and then flow out through the air inlet on the outer wall of the bearing housing sleeve of the turbojet engine, so as to ensure that the cleaning medium flowing into the gas pipeline maintains a preset constant cleaning pressure to clean all parts of the pipeline; In addition, as Figure 1 shown, a constant-pressure circulating cleaning circuit for cleaning the cooling gas pipeline is formed by connecting the cleaning circulating pipeline 14 to the third through-hole 9, so that the cleaning medium flowing out of the air inlet on the outer wall of the bearing housing sleeve of the turbojet engine re-enters the cooling gas pipeline from the third through-hole 9, realizing the purpose of long-term circulating flushing of the cooling gas pipeline, avoiding waste of cleaning resources and saving costs.

[0071] According to an embodiment of the present invention, as Figure 2 shown, the third sealing assembly includes a second sealing plate 8, a third sealing member 10 and a fourth sealing member 11;

[0072] The second sealing plate 8 is arranged at the top of the bearing housing sleeve of the turbojet engine and is used to seal the port and the hollow cavity position at the top of the latter;

[0073] The third through-hole 9 is arranged on the plate body of the second sealing plate 8;

[0074] The third sealing member 10 is pressed tightly between the bearing housing sleeve of the turbojet engine and the second sealing plate 8;

[0075] The fourth sealing member 11 is pressed tightly between the second sealing plate 8 and the inner wall of the hollow cavity of the bearing housing sleeve of the turbojet engine.

[0076] In this embodiment, as Figure 2As shown, the second sealing plate 8 and the bearing housing sleeve of the turbojet engine form a concave-convex mating structure and are connected to the top of the latter. The third seal 10 is tightly pressed on the concave-convex mating surface of the two to prevent the cleaning medium from overflowing from the mating surface between the bearing housing sleeve of the turbojet engine and the first sealing plate. The fourth seal 11 is tightly pressed between the second sealing plate 8 and the inner wall of the hollow cavity of the bearing housing sleeve of the turbojet engine to prevent the cleaning medium from overflowing through the inner wall of the hollow cavity of the bearing housing sleeve of the turbojet engine.

[0077] According to an embodiment of the present invention, as Figure 2 shown, the second sealing plate 8 is connected to the top of the bearing housing sleeve of the turbojet engine by the first heat screw 19 passing through its plate body.

[0078] In this embodiment, as Figure 3 shown, the advantage of fixing the second sealing plate 8 to the top of the bearing housing sleeve of the turbojet engine by the second screw 18 is that it is convenient to disassemble after the cooling air path pipeline of the bearing housing sleeve of the turbojet engine is flushed.

[0079] According to an embodiment of the present invention, as Figure 2 shown, a gasket 17 is provided between the second sealing plate 8 and the head of the second screw 18.

[0080] In this embodiment, as Figure 3 shown, by providing the gasket 17 between the second sealing plate 8 and the head of the second screw 18, the connection between the second sealing plate 8 and the top of the bearing housing sleeve of the turbojet engine is made more tightly and firmly. When vibration occurs due to flushing, the second screw 18 will not become loose, thus avoiding the phenomenon of seal failure caused by the loosening between the second sealing plate 8 and the bearing housing sleeve of the turbojet engine.

[0081] According to an embodiment of the present invention, as Figure 1 shown, the cleaning circulation pipeline 14 is further provided with a medium recovery device. The medium recovery device is located below the bearing housing sleeve of the turbojet engine and partially surrounds the bearing housing sleeve of the turbojet engine to recover and reuse the cleaning medium flowing out of the bearing housing sleeve of the turbojet engine;

[0082] A filter 13 is further provided on the medium recovery device and / or the cleaning circulation pipeline 14;

[0083] A medium transfer pump 7 and a pressure gauge 15 are further provided on the cleaning circulation pipeline 14. The pressure gauge 15 is located on the side of the medium output end of the medium transfer pump 7.

[0084] In this embodiment, as Figure 1As shown, by setting up a recovery device and the filter 13, the cleaning medium flowing out of the pipeline of the turbofan engine bearing housing is recovered and filtered, which facilitates the recycling cleaning of the pipeline of the turbofan engine bearing housing. By adjusting the medium transfer pump 7 to a preset power, it is ensured that the cleaning medium is transported into the pipeline of the turbofan engine bearing housing for cleaning at a preset pressure. The purpose of setting the pressure gauge 15 is to be able to observe through the pressure gauge 15 that the medium transfer pump 7 is adjusted to the preset power to transport the cleaning medium into the pipeline of the turbofan engine bearing housing for cleaning at a preset cleaning pressure.

[0085] According to an embodiment of the present invention, as Figure 1 shown, the medium recovery device includes a medium recovery tank 6 and a medium recovery funnel 12. The medium recovery funnel 12 is located above the medium recovery tank 6, and the filter 13 is arranged in the medium recovery tank 6;

[0086] The medium recovery funnel 12 partially surrounds the turbofan engine bearing housing, and the medium recovery tank 6 is communicated with the cleaning circulation pipeline 14.

[0087] In this embodiment, the funnel opening of the medium recovery funnel 12 is located above the air inlet of the turbofan engine bearing housing, forming a state where the inlet and outlet of the turbofan engine bearing housing are surrounded within the medium recovery funnel 12, so as to prevent the cleaning medium from splashing onto the ground of the cleaning site from the air inlet and / or outlet of the turbofan engine bearing housing due to excessive pressure during cleaning, resulting in unnecessary waste of the cleaning medium.

[0088] The above specific implementation manners have further elaborated on the purpose, technical solutions, and beneficial effects of the present invention. It should be understood that the above are only specific implementation manners of the present invention and are not used to limit the protection scope of the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A cleaning device for a turbojet engine bearing sleeve, characterized in that: The cleaning device comprises: A first sealing member (5), the first sealing member (5) sealing an oil outlet hole between an inlet and an outlet of a lubricating oil pipeline connected to the inside of the turbojet engine bearing seat sleeve; A second sealing component, wherein the second sealing component is provided with a first through hole (2) and a second through hole (3), and the second sealing component is sealingly connected to the end surface of the bottom end of the turbojet engine bearing seat sleeve; The first through hole (2) and the second through hole (3) are respectively connected to the inlet and outlet of the lubricating oil pipeline inside the bearing seat sleeve of the turbojet engine; The first through hole (2) is connected to the second through hole (3) via a cleaning circulation pipeline (14), so as to be connected to the lubricating oil pipeline to form a circulation loop for cleaning the lubricating oil pipeline.

2. A cleaning device for a turbojet engine bearing sleeve according to claim 1, characterized in that: The second sealing assembly comprises a first sealing plate (1) and a second sealing member (4); The first sealing plate (1) is arranged at the bottom end of the turbojet engine bearing seat sleeve and is used to seal the port position at the bottom end of the latter; The first through hole (2) and the second through hole (3) are arranged on the body of the first sealing plate (1); The second sealing member (4) is pressed tightly between the first sealing plate (1) and the end surface of the turbojet engine bearing seat sleeve.

3. A cleaning device for a turbojet engine bearing sleeve according to claim 2, characterized in that: The first sealing plate (1) is connected to the bottom end of the turbojet engine bearing seat sleeve by means of a first screw (16) passing through the plate body.

4. A cleaning device for a turbojet engine bearing sleeve according to claim 3, characterized in that: A gasket (17) is provided between the first sealing plate (1) and the column head of the first screw (16).

5. The cleaning device for a turbojet engine bearing sleeve according to claim 1, characterized in that: The cleaning device also includes: A third sealing component, wherein a third through hole (9) is provided on the third sealing component, and the third sealing component is sealingly connected to the end surface of the top end of the turbojet engine bearing seat sleeve; The third through hole (9) is in communication with an air outlet groove of a cooling air path pipeline inside the turbojet engine bearing seat sleeve; The third through hole (9) is connected to the cleaning circulation pipeline (14) and is connected to the cooling gas pipeline to form a circulation loop for cleaning the cooling gas pipeline.

6. A cleaning device for a turbojet engine bearing sleeve according to claim 5, characterized in that: The third sealing assembly comprises a second sealing plate (8), a third sealing member (10), and a fourth sealing member (11); The second sealing plate (8) is arranged at the top end of the turbojet engine bearing seat sleeve and is used to seal the port and hollow cavity position at the top end of the latter; The third through hole (9) is arranged on the body of the second sealing plate (8); The third sealing member (10) is pressed tightly between the turbojet engine bearing sleeve and the second sealing plate (8); The fourth sealing member (11) is pressed tightly between the second sealing plate (8) and the inner wall of the hollow cavity of the turbojet engine bearing seat sleeve.

7. A cleaning device for a turbojet engine bearing sleeve according to claim 6, characterized in that: The second sealing plate (8) is connected to the top end of the turbojet engine bearing seat sleeve by means of a second screw (18) passing through the plate body.

8. A cleaning device for a turbojet engine bearing sleeve according to claim 7, characterized in that: A gasket (17) is provided between the second sealing plate (8) and the column head of the second screw (18).

9. The cleaning device for a turbojet engine bearing sleeve according to claim 1, characterized in that: The cleaning circulation pipeline (14) is also provided with a medium recovery device, which is located below the turbojet engine bearing seat sleeve and partially surrounds the turbojet engine bearing seat sleeve, and is used to recover and reuse the cleaning medium flowing out of the turbojet engine bearing seat sleeve; The medium recovery device and / or the cleaning circulation pipeline (14) is also provided with a filter (13); The cleaning circulation pipeline (14) is also provided with a medium delivery pump (7) and a pressure gauge (15), and the pressure gauge (15) is located on one side of the medium output end of the medium delivery pump (7).

10. A cleaning device for a turbojet engine bearing sleeve according to claim 9, characterized in that: The medium recovery device comprises a medium recovery tank (6) and a medium recovery funnel (12), wherein the medium recovery funnel (12) is located above the medium recovery tank (6), and the filter (13) is arranged in the medium recovery tank (6); The medium recovery funnel (12) partially surrounds the turbojet engine bearing seat sleeve, and the medium recovery tank (6) is connected to the cleaning circulation pipeline (14).

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