Afterburner inner wall carbon deposition removing mechanism based on sliding arc discharge and control method

Abstract

The invention discloses an afterburner inner wall carbon deposition removing mechanism based on sliding arc discharge and a control method, and relates to the technical field of plasma application. Comprising a first electric telescopic rod, a second electric telescopic rod and a third electric telescopic rod, the second electric telescopic rod is mounted on the first electric telescopic rod; the sliding arc generating mechanism is mounted on the second electric telescopic rod and used for removing carbon deposition on the inner wall of the afterburner of the engine; the servo motor is arranged at the end part of the first electric telescopic rod and is used for driving the first electric telescopic rod to rotate; the limiting and fixing mechanism is connected to the end of the afterburner of the engine and used for fixing the first electric telescopic rod and the servo motor. The strategy of removing the deposited carbon through the sliding arc plasma can efficiently and stably remove the deposited carbon on the inner wall of the afterburner, key components are not damaged, and it can be ensured that each part of the inner walls of afterburners of different sizes is efficiently and stably cleaned.

Description

Technical Field

[0001] The invention relates to the technical field of plasma application, and in particular to a mechanism and a control method for removing carbon deposits from the inner wall of an afterburner chamber based on sliding arc discharge. Background Art

[0002] The aero engine afterburner combustion chamber has incomplete combustion of the mixture and low combustion efficiency due to factors such as short atomization time and low oxygen content, which in turn forms carbon deposits on the inner wall of the combustion chamber, which in severe cases will affect the engine performance. Therefore, in order to improve the working reliability of the engine and extend its service life, it is particularly important to effectively remove the carbon deposits on the combustion chamber wall.

[0003] At present, the industry mainly uses two methods to deal with carbon deposits on the walls of afterburner combustion chambers: manual cleaning and chemical cleaning. The manual cleaning method is simple in technology, but it takes a long time and it is difficult to completely remove stubborn carbon deposits or fuel coking. The pulse cleaning method has high working efficiency and short operation time, but the carbon deposits and coking colloids shaken off by the pressure wave often cannot be effectively cleaned and still require secondary operations. The chemical cleaning method also has the advantage of high efficiency, but the potion used is acidic and corrosive, which may damage the wall of the combustion chamber, and the installation and commissioning process of related equipment is relatively complicated.

[0004] In the prior art, the application number is 202311413904.2, entitled "An engine injector cleaning agent and its preparation method", and the application number is 202221633697.2, entitled "Internal combustion engine carbon deposit removal device and internal combustion engine" patent application, both use chemical agents to clean the inside of the engine. However, due to the corrosiveness of chemical agents, long-term use will cause damage to the precision parts of the engine, and from the perspective of equipment installation, they are not suitable for aircraft engine afterburner combustion chambers.

[0005] In the prior art, the patent application with application number 202121209095.X, titled "A tool for removing carbon deposits from the ventilation pipe of a certain type of aircraft engine", and the patent application with application number 201922271452.4, titled "A tool for removing carbon deposits", both rely on manual use of tools to clean the inside of the engine, which not only incurs high labor costs, but also has the problem of inconvenient operation. Summary of the invention

[0006] The purpose of the present invention is to provide a carbon deposit removal mechanism and control method based on sliding arc discharge, so as to solve the problems of long time for removing carbon deposits on the inner wall of the afterburner combustion chamber of the existing aircraft engine, inconvenient installation and debugging of related equipment, and easy damage to components.

[0007] To achieve the above-mentioned purpose, the technical solution of the present application is: a mechanism for removing carbon deposits from the inner wall of an afterburner chamber based on sliding arc discharge, comprising:

[0008] A first electric telescopic rod extends into the afterburner chamber of the engine when in operation;

[0009] A second electric telescopic rod, mounted on the first electric telescopic rod;

[0010] A sliding arc generating mechanism, mounted on the second electric telescopic rod, for removing carbon deposits on the inner wall of the afterburner combustion chamber of the engine;

[0011] A servo motor is arranged at the end of the first electric telescopic rod and is used to drive the first electric telescopic rod to rotate;

[0012] The limiting fixing mechanism is connected to the end of the afterburner chamber of the engine and is used to fix the first electric telescopic rod and the servo motor.

[0013] As a preferred solution of the present invention, a first position sensor is provided at the extended end of the first electric telescopic rod for detecting the distance between the first electric telescopic rod and the transverse inner wall of the engine afterburner chamber.

[0014] As a preferred embodiment of the present invention, the sliding arc generating mechanism comprises a high voltage electrode connected to a plasma power supply, and a second position sensor is provided on the high voltage electrode for detecting the distance between the high voltage electrode and the circumferential inner wall of the engine afterburner combustion chamber.

[0015] As a preferred solution of the present invention, a camera is provided at one end of the high voltage electrode, and the camera is placed in an insulating housing.

[0016] As a preferred solution of the present invention, the high-voltage electrode is rotatably connected to a fixed plate via a micro-servo engine, and the fixed plate is located on the second electric telescopic rod.

[0017] As a preferred solution of the present invention, a third position sensor is provided on the fixing plate for detecting the distance between the fixing plate and the circumferential inner wall of the engine afterburner chamber, thereby controlling the extension length of the second electric telescopic rod.

[0018] As a preferred solution of the present invention, the extending end of the first electric telescopic rod is connected to a high-temperature resistant hose, and the air outlet end of the high-temperature resistant hose is connected to the high-voltage electrode to ensure that air is always blown between the high-voltage electrode and the circumferential inner wall of the engine afterburner combustion chamber, and the engine afterburner combustion chamber serves as a grounding electrode.

[0019] As a preferred solution of the present invention, the limiting fixing mechanism includes multiple L-shaped mechanical arms, one end of the L-shaped mechanical arm is connected with a claw for fixing to the end of the engine afterburner combustion chamber, and the other end extends into a hollow adjustment rod. The hollow adjustment rod is installed on a servo motor fixing seat and connected to one end of a support rod, and the other end of the support rod is connected to a bearing seat, and the bearing in the bearing seat is sleeved on the first electric telescopic rod.

[0020] As a preferred solution of the present invention, the position limiting and fixing mechanism is connected to the top of the bracket, and the bottom of the bracket is connected to a slide rail through a slider, and the slide rail is located on the vehicle body.

[0021] The present invention also provides a control method for a carbon deposit removal mechanism based on sliding arc discharge, comprising:

[0022] Connect the limiting and fixing mechanism to the end of the afterburner chamber of the engine to complete axial limiting and fixing;

[0023] The sliding arc generating mechanism enters the interior of the engine afterburner chamber from the storage state through the first electric telescopic rod, and the first electric telescopic rod stops extending when the first position sensor detects that the distance between the first electric telescopic rod and the lateral inner wall of the engine afterburner chamber reaches a first set threshold value;

[0024] The sliding arc generating mechanism moves longitudinally through the second electric telescopic rod, and the second electric telescopic rod stops extending when the third position sensor detects that the distance between the second electric telescopic rod and the circumferential inner wall of the engine afterburner chamber reaches a third set threshold;

[0025] The micro-servo drives the sliding arc generating mechanism to be in the deployed state, and the micro-servo stops driving when the second position sensor detects that the distance between the micro-servo and the circumferential inner wall of the engine afterburner chamber reaches a second set threshold value;

[0026] The air flows through the inner cavity of the first electric telescopic rod and is blown out through the high temperature resistant hose;

[0027] The engine afterburner chamber is grounded, and the plasma power supply is turned on to generate an arc between the high-voltage electrode and the inner wall of the engine afterburner chamber. The arc slides in the direction of air flow to generate sliding arc plasma to remove carbon deposits on the inner wall of the engine afterburner chamber;

[0028] The first electric telescopic rod is slowly rotated by driving the motor, so that the sliding arc plasma cleans every part of the afterburner chamber of the engine;

[0029] After a certain number of rotations, the camera takes pictures and transmits them to the controller to judge the carbon deposit removal status. If the carbon deposits are not completely removed, the rotation removal will continue. If the carbon deposits in this circumferential direction are completely removed, the first electric telescopic rod drives the sliding arc generating mechanism to move outward, and then the rotation removal of carbon deposits will continue. This process is repeated until the carbon deposits on the inner wall of the engine afterburner combustion chamber are completely cleaned, and the plasma power supply stops supplying power.

[0030] When the air supply stops, the micro-servo causes the sliding arc generating mechanism to be converted from the deployed state to the retracted state, and the limiting fixing mechanism is removed from the engine afterburner and slides outward along the slide rail.

[0031] The present invention adopts the above technical solution, and can achieve the following technical effects:

[0032] 1. The sliding arc plasma technology is used to remove carbon deposits in the engine afterburner, making the carbon deposit removal process efficient and fast.

[0033] 2. The slide rail and the vehicle body effectively solve the problems of inconvenient installation of the carbon deposit removal mechanism and difficult transportation of the engine afterburner combustion chamber.

[0034] 3. The limit fixation of the carbon deposit removal mechanism is completed by the claws cooperating with the L-shaped mechanical arm, which enables the electric telescopic rod to be firmly fixed on the axis position of the engine afterburner, providing convenience for the work of subsequent mechanisms.

[0035] 4. The application of position sensors enables the carbon deposit removal mechanism to accurately control the distance from the inner wall of the engine afterburner combustion chamber to avoid contact.

[0036] 5. The sliding arc generating structure can be compactly folded in the storage state, making it convenient for the carbon deposit removal mechanism to enter the interior of the engine afterburner combustion chamber of a smaller size.

[0037] 6. The rotation and extension function of the electric telescopic rod enables the sliding arc plasma to reach every corner of the inner wall of the afterburner, achieving effective cleaning of carbon deposits on the inner wall. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0039] Figure 1 It is the structural principle diagram of the mechanism for removing carbon deposits on the inner wall of the afterburner chamber based on sliding arc discharge;

[0040] Figure 2 It is a side cross-sectional view of the sliding arc generating mechanism in an expanded state;

[0041] Figure 3 It is a front cross-sectional view of the sliding arc generating mechanism in the stowed state;

[0042] Figure 4 It is a side sectional view of the limiting fixing mechanism;

[0043] Figure 5 It is the working flow chart of the carbon deposit removal mechanism on the inner wall of the afterburner chamber based on sliding arc discharge;

[0044] Explanation of the serial numbers in the figure: 1. Slide rail; 2. High temperature resistant hose; 3. First position sensor; 4. Third position sensor; 5. High voltage electrode; 6. Second electric telescopic rod; 7. First electric telescopic rod; 8. Limit fixing mechanism; 9. Camera; 10. Plasma power supply; 11. Controller; 12. Servo motor; 13. Second position sensor; 81. Positioning hole; 82. Positioning pin hole; 83. Claw. DETAILED DESCRIPTION

[0045] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present application more clearly understood, the present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0046] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it can be directly on the other element or indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.

[0047] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, "multiple" means two or more, unless otherwise clearly and specifically defined. "Several" means one or more, unless otherwise clearly and specifically defined.

[0048] In the description of the present application, it should be understood that the terms "center", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply 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 understood as a limitation on the present application.

[0049] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0050] In order to solve the problems that the cleaning time of carbon deposits on the inner wall of the afterburner combustion chamber of the existing aircraft engine is long, the installation and debugging of related equipment is inconvenient, and components are easily damaged, etc., this embodiment provides a mechanism for cleaning carbon deposits on the inner wall of the afterburner combustion chamber based on sliding arc discharge, such as Figure 1 As shown, including:

[0051] A first electric telescopic rod is extended into the afterburner chamber of the engine when in operation; a first position sensor is provided at the extended end of the first electric telescopic rod for detecting the distance between the first electric telescopic rod and the transverse inner wall of the afterburner chamber of the engine;

[0052] A second electric telescopic rod, mounted on the first electric telescopic rod;

[0053] A sliding arc generating mechanism is installed on the second electric telescopic rod and is used to remove carbon deposits on the inner wall of the engine afterburner chamber. The sliding arc generating mechanism includes a high-voltage electrode connected to a plasma power source. The high-voltage electrode is preferably an arc-shaped structure, which is conducive to the generation of sliding arc plasma. A second position sensor is provided on the high-voltage electrode to detect the distance between the high-voltage electrode and the circumferential inner wall of the engine afterburner chamber, so that the high-voltage electrode and the inner wall of the afterburner chamber form a certain angle. This angle makes the distance between the high-voltage electrode 5 and the inner wall of the afterburner chamber gradually expand along the air flow direction, so that the generation of sliding arc plasma is more stable.

[0054] A camera is provided at the rear end of the high-voltage electrode. The camera is placed in an insulating housing to ensure that the arc will not damage the camera. When the sliding arc generating mechanism performs a circumferential cleaning operation, the camera starts to work, taking pictures of the inner wall of the afterburner chamber and transmitting them to the controller to judge the carbon deposit cleaning status. The high-voltage electrode is rotatably connected to a fixed plate through a micro-servo, and the fixed plate is located on the second electric telescopic rod, such as Figure 2-3 As shown, the micro-servo enables this mechanism to have an expanded state and a retracted state. A third position sensor is provided on the fixing plate to detect the distance between the fixing plate and the circumferential inner wall of the engine afterburner combustion chamber, thereby controlling the extension length of the second electric telescopic rod.

[0055] A servo motor is arranged at the end of the first electric telescopic rod and is used to drive the first electric telescopic rod to rotate;

[0056] The limit fixing mechanism is connected to the end of the engine afterburner combustion chamber to determine the axis position of the carbon deposit removal mechanism. Figure 4 As shown, the limiting fixing mechanism 8 includes four "L"-shaped mechanical arms, one end of which is connected with a claw covered with soft rubber for fixing to the end of the engine afterburner, and the other end extends into the hollow adjusting rod, and multiple rows of positioning holes are opened on the hollow adjusting rod, and multiple rows of positioning pin holes are opened on the L-shaped mechanical arm. Positioning pins are inserted into the overlapping holes of the positioning holes and the positioning pin holes to adapt to engine afterburner of different sizes; the hollow adjusting rod is installed on the servo motor fixing seat and is connected to one end of the support rod, and the other end of the support rod is connected to the bearing seat, and the bearing in the bearing seat is sleeved on the first electric telescopic rod.

[0057] The high temperature resistant hose is located at the extended end of the first electric telescopic rod. The air outlet end of the high temperature resistant hose is connected to the high voltage electrode to ensure that the air is always blown between the high voltage electrode and the circumferential inner wall of the engine afterburner chamber, and the engine afterburner chamber serves as a grounding electrode.

[0058] The above-mentioned limiting fixing mechanism is connected to the top of the bracket, and the bottom of the bracket is connected to the slide rail through a slider, and the slide rail is located on the vehicle body. A plasma power supply and a controller are also provided on one side of the vehicle body. This controller is connected to the first electric telescopic rod, the second electric telescopic rod, the servo motor, the camera, various position sensors, the micro-servo, and the plasma power supply.

[0059] like Figure 5As shown, the limit fixing mechanism 8 is placed at the tail nozzle of the engine afterburner by adjusting the slide rail 1 and fixed by four claws 83, and the positioning pins are inserted into the positioning pin holes 82 and the positioning holes 81, so that the carbon deposit removal mechanism and the engine afterburner are axially fixed. Start the power supply, and the first electric telescopic rod 7 slowly extends into the engine afterburner, and the first position sensor 3 measures the distance between the first electric telescopic rod and the lateral inner wall of the engine afterburner in real time to avoid touching. When it moves to 1 cm from the lateral inner wall, the controller stops the first electric telescopic rod from extending; at this time, the second electric telescopic rod 6 extends, and the third position sensor 4 measures the distance between the first electric telescopic rod and the circumferential inner wall of the engine afterburner in real time until it stops at 1 cm from the inner wall. The micro-servo drives the high-voltage electrode 5 to rotate, and the second position sensor 13 monitors the distance between the first electric telescopic rod and the circumferential inner wall of the engine afterburner, which is used to control the angle formed by the high-voltage electrode and the inner wall of the afterburner, so as to facilitate the subsequent generation of sliding arc plasma. At this time, air is blown in from the tail end of the first electric telescopic rod 7, and the air flows to the top of the electric telescopic rod and is guided by the high-temperature resistant hose 2 to the space between the high-voltage electrode 5 and the inner wall of the engine afterburner chamber. The inner wall of the engine afterburner chamber is grounded, and then the plasma power supply 10 is turned on to generate a sliding arc between the high-voltage electrode 5. Then the first electric telescopic rod 7 is driven by the servo motor 12 to rotate slowly to achieve 360-degree carbon deposit removal on the wall without dead angles. After rotating a certain number of times, the camera 9 takes an image of the inner wall and transmits it back to the controller 11 to monitor the carbon deposit removal status. If the carbon deposits are not completely removed, it will continue to rotate. If the carbon deposits are completely removed, the first electric telescopic rod 7 will drive the high-voltage electrode to move slowly a short distance to the outside, and then rotate in a circular direction again. The whole process is repeated until the carbon deposits on the inner wall of the engine afterburner chamber are completely removed.

[0060] It is worth noting that the three position sensors in this mechanism monitor the corresponding distances throughout the entire cyclic rotation decarbonization process, and constantly control the distance and angle between the structure and the inner wall of the afterburner chamber. When the carbon deposits on the inner wall of the entire engine afterburner chamber are removed, the plasma power supply 10 is cut off, the air supply is stopped, and the sliding arc generating mechanism is converted from the deployed state to the retracted state through the micro-servo. After it is fully retracted, the limit fixing mechanism is unfixed, the slide rail 1 slides outward, and the carbon deposit removal mechanism slowly leaves the engine.

[0061] The effect of this embodiment is that the sliding arc plasma technology is used to remove the carbon deposits on the inner wall of the afterburner combustion chamber of the aircraft engine. By adopting a sliding arc generating mechanism and working in conjunction with a position sensor, it is possible to ensure safe and efficient cleaning of the carbon deposits on the inner wall of the entire afterburner combustion chamber. In addition, a certain angle design is provided between the high-voltage electrode and the grounding electrode, which ensures that the sliding arc can fully contact the inner wall of the afterburner combustion chamber under the action of air flow, thereby improving the efficiency and speed of cleaning carbon deposits. At the same time, the car body and the slide rail further solve the problem of the installation convenience of the mechanism in practical applications.

[0062] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit it. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. A mechanism for removing carbon deposits from the inner wall of an afterburner chamber based on sliding arc discharge, characterized in that: include: A first electric telescopic rod extends into the afterburner chamber of the engine when in operation; A second electric telescopic rod is installed on the first electric telescopic rod; A sliding arc generating mechanism, mounted on the second electric telescopic rod, for removing carbon deposits on the inner wall of the afterburner combustion chamber of the engine; A servo motor is arranged at the end of the first electric telescopic rod and is used to drive the first electric telescopic rod to rotate; The limiting fixing mechanism is connected to the end of the afterburner chamber of the engine and is used to fix the first electric telescopic rod and the servo motor.

2. According to claim 1, a mechanism for removing carbon deposits from the inner wall of an afterburner chamber based on sliding arc discharge, characterized in that: A first position sensor is provided at the extended end of the first electric telescopic rod, which is used to detect the distance between the first electric telescopic rod and the transverse inner wall of the engine afterburner combustion chamber.

3. The mechanism for removing carbon deposits from the inner wall of the afterburner chamber based on sliding arc discharge according to claim 1, characterized in that: The sliding arc generating mechanism comprises a high voltage electrode connected to a plasma power source, and a second position sensor is arranged on the high voltage electrode for detecting the distance between the high voltage electrode and the circumferential inner wall of the engine afterburner chamber.

4. The mechanism for removing carbon deposits from the inner wall of the afterburner chamber based on sliding arc discharge according to claim 3, characterized in that: A camera is provided at one end of the high voltage electrode and is placed in an insulating casing.

5. The mechanism for removing carbon deposits from the inner wall of the afterburner chamber based on sliding arc discharge according to claim 3, characterized in that: The high voltage electrode is rotatably connected to a fixing plate via a micro-servo engine, and the fixing plate is located on the second electric telescopic rod.

6. The mechanism for removing carbon deposits from the inner wall of the afterburner chamber based on sliding arc discharge according to claim 5, characterized in that: A third position sensor is provided on the fixing plate for detecting the distance between the fixing plate and the circumferential inner wall of the engine afterburner chamber, thereby controlling the extension length of the second electric telescopic rod.

7. The mechanism for removing carbon deposits from the inner wall of the afterburner chamber based on sliding arc discharge according to claim 1, characterized in that: The extended end of the first electric telescopic rod is connected to a high-temperature resistant hose, and the air outlet end of the high-temperature resistant hose is connected to the high-voltage electrode to ensure that air is always blown between the high-voltage electrode and the circumferential inner wall of the engine afterburner chamber, and the engine afterburner chamber serves as a grounding electrode.

8. The mechanism for removing carbon deposits from the inner wall of the afterburner chamber based on sliding arc discharge according to claim 1, characterized in that: The limiting and fixing mechanism includes multiple L-shaped mechanical arms, one end of which is connected with a claw for fixing to the end of the engine afterburner combustion chamber, and the other end extends into a hollow adjustment rod. The hollow adjustment rod is installed on the servo motor fixing seat and connected to one end of the support rod. The other end of the support rod is connected to the bearing seat, and the bearing in the bearing seat is sleeved on the first electric telescopic rod.

9. The mechanism for removing carbon deposits from the inner wall of the afterburner chamber based on sliding arc discharge according to claim 1, characterized in that: The position limiting and fixing mechanism is connected to the top of the bracket, and the bottom of the bracket is connected to a slide rail through a slider, and the slide rail is located on the vehicle body.

10. A control method for a carbon deposit removal mechanism based on sliding arc discharge, characterized in that: include: Connect the limiting and fixing mechanism to the end of the afterburner chamber of the engine to complete axial limiting and fixing; The sliding arc generating mechanism enters the interior of the engine afterburner chamber from the storage state through the first electric telescopic rod, and the first electric telescopic rod stops extending when the first position sensor detects that the distance between the first electric telescopic rod and the lateral inner wall of the engine afterburner chamber reaches a first set threshold value; The sliding arc generating mechanism moves longitudinally through the second electric telescopic rod, and the second electric telescopic rod stops extending when the third position sensor detects that the distance between the second electric telescopic rod and the circumferential inner wall of the engine afterburner chamber reaches a third set threshold; The micro-servo drives the sliding arc generating mechanism to be in the deployed state, and the micro-servo stops driving when the second position sensor detects that the distance between the micro-servo and the circumferential inner wall of the engine afterburner chamber reaches a second set threshold value; The air flows through the inner cavity of the first electric telescopic rod and is blown out through the high temperature resistant hose; The engine afterburner chamber is grounded, and the plasma power supply is turned on to generate an arc between the high-voltage electrode and the inner wall of the engine afterburner chamber. The arc slides in the direction of air flow to generate sliding arc plasma to remove carbon deposits on the inner wall of the engine afterburner chamber; The first electric telescopic rod is slowly rotated by driving the motor, so that the sliding arc plasma cleans every part of the afterburner chamber of the engine; After a certain number of rotations, the camera takes pictures and transmits them to the controller to judge the carbon deposit removal status. If the carbon deposits are not completely removed, the rotation removal will continue. If the carbon deposits in this circumferential direction are completely removed, the first electric telescopic rod drives the sliding arc generating mechanism to move outward, and then the rotation removal of carbon deposits will continue. This process is repeated until the carbon deposits on the inner wall of the engine afterburner combustion chamber are completely cleaned, and the plasma power supply stops supplying power. When the air supply stops, the micro-servo causes the sliding arc generating mechanism to be converted from the deployed state to the retracted state, and the limiting fixing mechanism is removed from the engine afterburner and slides outward along the slide rail.

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