Engine hot wash system

Abstract

The utility model provides an engine hot cleaning system, including cleaning liquid container, pressure supply device and nozzle, and cleaning liquid container communicates with the nozzle through the cleaning pipeline, and the nozzle is connected to the air compressor, and the cleaning liquid is sprayed into the air compressor passageway when the air compressor is operated in the slow operation state, and the cleaning pipeline is connected with the pressure supply device, the nozzle includes the connecting section, the neck -in section and the diffusion section who connects in proper order, the connecting section is connected with the cleaning pipeline, and the cross section of diffusion section is the fan shape, the utility model discloses the cleaning liquid is sprayed into the air compressor passageway when the air compressor is operated in the slow operation state, and the diffusion section of nozzle is made into the fan shape, makes the area of cleaning liquid spray as far as possible extensive contact with the air compressor blade, and after contacting, the continuous liquid phase is broken, atomized into small droplet by the shear disturbance effect of blade rotation, and as far as possible more air compressor blades are cleaned, so that more blades can be cleaned as far as possible under the condition of not disassembling the air compressor.

Description

Technical Field

[0001] This utility model relates to the field of engine cleaning technology, and in particular to an engine thermal cleaning system. Background Technology

[0002] Aircraft engines operate in salt spray environments, which can easily cause corrosion of compressor blades, thus affecting compressor performance and shortening engine life. To mitigate compressor blade corrosion, thermal cleaning of the compressor is frequently required.

[0003] The working principle of thermal cleaning is to spray cleaning liquid into the compressor passage while the compressor is running at slow speed. The rotating blades atomize and break up the liquid, cleaning as many compressor blades as possible. The challenge lies in cleaning as many blades as possible without disassembling the compressor.

[0004] The main criterion for judging the effectiveness of thermal cleaning is the coverage of the cleaning fluid on the blade surface to be cleaned. The greater the coverage, the better the thermal cleaning effect, and vice versa. Therefore, the key to a thermal cleaning system is to maximize the coverage of the cleaning fluid on the blade surface under the condition of limited cleaning fluid flow.

[0005] Existing engine cleaning devices include, for example, Chinese patent CN107497740A published on 2017-12-22. However, such patented technologies do not involve the specific structure of the cleaning device and cannot solve the problem of maximizing the coverage of the cleaning liquid on the blade surface. Utility Model Content

[0006] The purpose of this invention is to provide an engine thermal cleaning system that can clean as many blades as possible without disassembling the compressor.

[0007] This utility model provides an engine thermal cleaning system, including a cleaning fluid container, a pressure supply device, and a nozzle. The cleaning fluid container is connected to the nozzle through a cleaning pipeline. The nozzle is connected to a compressor and sprays cleaning fluid into the compressor passage when the compressor is running at slow speed. The cleaning pipeline is connected to the pressure supply device. The nozzle includes a connecting section, a constriction section, and a diffuser section connected in sequence. The connecting section is connected to the cleaning pipeline, and the diffuser section has a fan-shaped cross-section.

[0008] Furthermore, the cleaning pipeline includes a ring-shaped pipe.

[0009] Furthermore, the annular tube is coaxially disposed outside at least one end outlet of the compressor.

[0010] Furthermore, multiple nozzles are connected at intervals to the annular tube.

[0011] Furthermore, a flow control valve is connected to the cleaning pipeline.

[0012] Furthermore, the diffusion section has a conical structure.

[0013] Furthermore, the diffuser section is equipped with a flow-disrupting element.

[0014] Furthermore, the spoiler includes a tapered member and spoilers, with a plurality of spoilers inclined axially and arranged around the outer surface of the tapered member.

[0015] Furthermore, the cleaning fluid container includes a cleaning fluid tank.

[0016] Furthermore, the pressure supply device includes a liquid supply pump.

[0017] The technical solution of this utility model involves spraying cleaning liquid into the compressor channel when the compressor is running at a slow speed. The diffuser section of the nozzle is made into a fan shape so that the area of ​​the cleaning liquid sprayed out can contact the compressor blades as widely as possible. After contact, the continuous liquid phase is sheared and disturbed by the rotation of the blades, breaking it into small droplets. After the liquid is atomized and broken, as many compressor blades as possible are cleaned, thus cleaning as many blades as possible without disassembling the compressor. Attached Figure Description

[0018] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the overall system of this utility model; Figure 2 This is a schematic diagram of the nozzle arrangement of this utility model; Figure 3 This utility model Figure 2 The main view; Figure 4 This utility model Figure 2 Internal sectional view; Figure 5 This utility model Figure 4 Enlarged view of point A; Figure 6 This is a schematic diagram of the spoiler structure of this utility model; Explanation of reference numerals in the attached figures: 1- Container for cleaning solution; 2-Pressure supply device; 3-Cleaning pipeline; 31-Ring pipe; 32-Flow control valve; 4- Nozzle; 41- Connecting section; 42- Narrowing section; 43- Diffusion section; 44- Blower; 441- Conical component; 442- Blower plate; 5-Compressor. Detailed Implementation

[0020] The technical solution of this utility model will be clearly and completely described below with reference to the embodiments. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0021] In the description of this 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", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0022] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the stated features. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified. Furthermore, the terms "installed," "connected," and "linked" should be interpreted broadly; for example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0023] Example 1 like Figures 1-4As shown, this utility model provides an engine thermal cleaning system, including a cleaning fluid container 1, a pressure supply device 2, and a nozzle 4. The cleaning fluid container 1 is connected to the nozzle 4 via a cleaning pipeline 3. The nozzle 4 is connected to a compressor 5 and sprays cleaning fluid into the compressor 5 channel when the compressor 5 is running at slow speed. The cleaning pipeline 3 is connected to the pressure supply device 2. The nozzle 4 includes a connecting section 41, a constriction section 42, and a diffuser section 43 connected in sequence. The connecting section 41 is connected to the cleaning pipeline 3, and the diffuser section 43 has a fan-shaped cross-section. The pressure supply device 2 includes a fluid supply pump.

[0024] Specifically, this invention involves spraying cleaning liquid into the compressor 5 channel while the compressor 5 is running at slow speed. The diffuser section 43 of the nozzle 4 is made into a fan shape so that the area of ​​the cleaning liquid sprayed out can contact the compressor 5 blades as widely as possible. After contact, the blades rotate, causing the continuous liquid phase to be sheared and atomized into small droplets. After the liquid is atomized and broken, as many compressor 5 blades as possible are cleaned, thus cleaning as many blades as possible without disassembling the compressor 5.

[0025] Example 2 like Figures 1-4 As shown, the cleaning line 3 includes an annular pipe 31, which is coaxially arranged outside at least one end of the compressor 5. Multiple nozzles 4 are connected to the annular pipe 31 at intervals. A flow control valve 32 is connected to the cleaning line 3.

[0026] Specifically, multiple nozzles 4 are spaced apart and arranged around one end of the compressor 5 using an annular pipe 31, so that these nozzles 4 can spray cleaning fluid onto the blades inside the compressor 5 more comprehensively and evenly, thereby improving the cleaning effect.

[0027] Example 3 like Figures 1-6 As shown, the diffuser section 43 has a conical structure, and a baffle 44 is provided inside the diffuser section 43. The baffle 44 includes a conical part 441 and baffles 442, and a plurality of baffles 442 are inclined axially and arranged around the outer surface of the conical part 441. The cleaning fluid container 1 includes a cleaning fluid tank.

[0028] Specifically, by making the diffuser section 43 a conical structure, the spray area of ​​the cleaning fluid is maximized. Furthermore, by using the baffle 44 within the diffuser section 43, the cleaning fluid, under pressure, is sprayed along the annular conical region between the baffle 44 and the diffuser section 43. After spraying, the cleaning fluid follows a radial diffusion trajectory, further increasing the contact area between the cleaning fluid and the blades. Moreover, by setting the outer surface of the baffle 44 as an inclined baffle plate 442, the high-pressure cleaning fluid pushes the baffle 44 to rotate as it passes through the baffle plate 442, causing the cleaning fluid to follow a spiral trajectory when exiting the diffuser section 43 of the nozzle 4, increasing the spray range of the cleaning fluid and its ability to remove deposits from the blades. An annular baffle ring can be provided within the diffuser section 43 to prevent the baffle 44 from detaching.

[0029] The principle of this utility model: By injecting cleaning liquid into the compressor 5 passage while the compressor 5 is running at slow speed, and by making the diffuser section 43 of the nozzle 4 fan-shaped, the cleaning liquid is sprayed onto the compressor 5 blades over a wide area. After contact, the rotating blades cause the continuous liquid phase to be sheared and atomized into small droplets. This atomization and breakup of the liquid cleans as many compressor 5 blades as possible, thus cleaning as many blades as possible without disassembling the compressor 5. The diffuser section 43 is a conical structure to maximize the area of ​​the cleaning liquid spray. Furthermore, the turbulence element 44 within the diffuser section 43 causes the cleaning liquid to be sprayed out along the annular conical region between the turbulence element 44 and the diffuser section 43 under pressure. After spraying, the cleaning liquid spreads outwards, further increasing the contact area between the cleaning liquid and the blades.

[0030] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.

Claims

1. An engine thermal cleaning system, characterized in that, It includes a cleaning fluid container, a pressure supply device, and a nozzle. The cleaning fluid container is connected to the nozzle through a cleaning pipeline. The nozzle is connected to a compressor and sprays cleaning fluid into the compressor channel when the compressor is running at slow speed. The cleaning pipeline is connected to the pressure supply device. The nozzle comprises a connecting section, a constriction section, and a diffuser section connected in sequence. The connecting section is connected to the cleaning pipeline, and the diffuser section has a fan-shaped cross-section.

2. The engine thermal cleaning system according to claim 1, characterized in that, The cleaning pipeline includes a ring pipe.

3. The engine thermal cleaning system according to claim 2, characterized in that, The annular tube is coaxially arranged outside at least one end outlet of the compressor.

4. The engine thermal cleaning system according to claim 3, characterized in that, Multiple nozzles are connected at intervals to the annular tube.

5. The engine thermal cleaning system according to claim 2, characterized in that, A flow control valve is connected to the cleaning pipeline.

6. The engine thermal cleaning system according to claim 1, characterized in that, The diffusion section has a conical structure.

7. The engine thermal cleaning system according to claim 6, characterized in that, The diffuser section is equipped with a flow-disrupting element.

8. The engine thermal cleaning system according to claim 7, characterized in that, The spoiler includes a tapered member and spoilers, with a plurality of spoilers inclined axially and arranged around the outer surface of the tapered member.

9. The engine thermal cleaning system according to claim 1, characterized in that, The cleaning fluid container includes a cleaning fluid tank.

10. The engine thermal cleaning system according to claim 1, characterized in that, The pressure supply device includes a liquid supply pump.

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