Aero-engine cooling device for ground service

Abstract

The aero-engine cooling device for the ground service comprises a trolley assembly, a centrifugal fan assembly, a pipeline air inlet assembly and an electrical assembly, the pipeline air inlet assembly comprises a steel frame, a glass fiber cloth cover, a handrail steel pipe and a pipeline connecting piece, the outer side of the steel frame is fixedly connected with the glass fiber cloth cover in a sleeved mode, and the pipeline connecting piece is fixedly connected with the handrail steel pipe in a sleeved mode. Handrail steel pipes are fixedly connected to the periphery of the steel frame at equal intervals, and the lower portion of the glass fiber cloth cover is fixedly connected with an air pipe through a pipeline connecting piece. Compared with the mode that an air blower is used for direct blowing in the direction of the air inlet of the aero-engine, the tail part of the aero-engine can be directly sucked through negative pressure formed by the centrifugal fan assembly, so that the tail part of the aero-engine can be directly sucked, and the tail part of the aero-engine can be directly sucked. The glass fiber cloth cover of the pipeline air inlet assembly is tightly attached to the aero-engine body, a certain self-sealing characteristic is formed, the sealing difficulty is smaller, and the cooling flow loss is small.

Description

Technical Field

[0001] The utility model relates to the technical field of cooling equipment, in particular to an aviation engine cooling device for ground service. Background Art

[0002] Aircraft engines are the power that propels aircraft to fly. Generally, the temperature of turbofan engines is 1400~1700℃. The temperature at the engine intake and exhaust is slightly lower, but not less than 1400℃. The engine can reach a maximum temperature of 1750℃ when running with afterburner. As the core component of aircraft engines, the blade holes of high-pressure turbine rotor blades are important components that affect engine performance and life. Once the inner wall of the blade hole is adhered, oxidized, and worn, it will lead to a decline in engine performance and seriously affect aviation safety. How to ensure the quality and state of the inner wall of the blade hole has always been a key difficulty in the field of aircraft engine research and development. The borescope is a high-precision non-contact measuring instrument that can realize online real-time monitoring of multiple parameters such as the size, shape, and difference of the inner wall of the blade hole. Its working principle is: the borescope device installed on the engine emits rays, and through the reflection and diffraction of the rays by the blade hole, multiple parameters of the inner wall of the blade hole are calculated through a specific algorithm.

[0003] However, when the engine has just finished working, the whole engine is in a high temperature state, which will not only damage the borescope probe (the maintenance cost of the borescope is high), but also pose a certain high temperature risk to the operator, which is not conducive to borescope work or other service work; waiting for the engine to cool naturally to the operating temperature often takes 3 to 4 hours. Therefore, in order to speed up the cooling rate of the airflow inside the engine, shorten the rotor jam time after the engine is working, and improve the efficiency of borescope inspection, a device that can quickly cool the internal temperature of the engine within a certain period of time is needed. Utility Model Content

[0004] The purpose of the utility model is to solve at least one of the technical problems existing in the prior art and to provide a ground-based aircraft engine cooling device, which solves the above-mentioned problem by rapidly cooling the aircraft engine through direct suction at the tail of the aircraft engine by a centrifugal fan.

[0005] To achieve the above-mentioned purpose, a ground-based aircraft engine cooling device is provided, comprising a trolley assembly and an electrical assembly, wherein the trolley assembly comprises a trolley bracket and a trolley handrail, an upper end of the trolley bracket is fixedly connected to the trolley handrail, the bottom four corners of the trolley bracket are fixedly connected to universal wheels, both ends of one side of the trolley bracket are provided with movable foot supports, and the upper middle part of the trolley bracket is fixedly connected to a motor bracket;

[0006] The top of the motor bracket is fixedly connected to a centrifugal fan assembly, and the centrifugal fan assembly includes an air duct, a centrifugal fan body and an explosion-proof motor. The air inlet of the centrifugal fan body is fixedly connected to the air duct, and one end of the air duct away from the centrifugal fan body is fixedly connected to a pipeline air inlet assembly. The bottom of the explosion-proof motor is fixedly connected to the motor bracket, and the air outlet of the centrifugal fan body is fixedly connected to a muffler;

[0007] The duct air inlet assembly comprises a steel frame, a glass fiber cloth cover, a handrail steel pipe and a duct connector. The outer side of the steel frame is fixedly sleeved with a glass fiber cloth cover, and the four sides of the steel frame are fixedly connected with handrail steel pipes at equal intervals. The bottom of the glass fiber cloth cover is fixedly connected to the air duct through the duct connector.

[0008] The electrical components include an electrical cabinet, a power cable, a low-current cable, a high-current cable and a wire-reeling hook. A power cable is arranged at a lower part of one side of the electrical cabinet, a high-current cable is arranged at a lower middle part of a side of the electrical cabinet close to the power cable, a low-current cable is arranged at a lower part of a side of the electrical cabinet close to the high-current cable, and wire-reeling hooks are fixedly connected at positions corresponding to the power cable, the low-current cable and the high-current cable on the upper part of the side of the electrical cabinet close to the high-current cable.

[0009] According to the aircraft engine cooling device for ground support, the movable leg support includes a side fixing seat, a tap, a rotating handle and a base, square holes are opened at both ends of the trolley bracket, the inner sides of the two square holes are fixedly connected to the side fixing seats, the middle parts of the two side fixing seats are threadedly connected to the taps, the tops of the two taps are fixedly connected to the rotating handles, and the bottoms of the two taps are movably connected to the base.

[0010] According to the a ground-based aircraft engine cooling device, the electric cabinet is electrically connected to the centrifugal fan assembly via a weak-current cable and a strong-current cable.

[0011] According to the aero-engine cooling device for ground support, a plurality of tie hook straps are fixedly connected at equal intervals to the outer side of the glass fiber cloth cover.

[0012] According to the a ground-based aircraft engine cooling device, the centrifugal fan body is a boiler exhaust fan, and the air duct is a high-temperature resistant smoke exhaust duct.

[0013] According to the aero-engine cooling device for ground support, the inner end of the handrail steel pipe is fixedly connected to the steel frame through a quick-change pin shaft, and the outer end of the handrail steel pipe is provided with an handrail cover.

[0014] According to the aero-engine cooling device for ground support, a clamp is provided at the air inlet of the centrifugal fan body, and a flow meter and a thermometer are fixedly plugged into the clamp.

[0015] The above solution has at least one of the following beneficial effects:

[0016] 1. The utility model is provided with a duct air inlet assembly and a centrifugal fan assembly. Compared with the method of using a blower to blow directly in the direction of the air inlet of the aircraft engine, when the tail of the aircraft engine is directly sucked, the negative pressure formed by the centrifugal fan assembly can make the glass fiber cloth cover of the duct air inlet assembly close to the aircraft engine body, forming a certain self-sealing property, with less sealing difficulty and less cooling flow loss. In addition, the diameter of the tail of the aircraft engine is smaller, which is conducive to the lightweight design of the duct air inlet assembly and enhances the practicality of the device.

[0017] 2. The centrifugal fan assembly of the utility model is provided with a muffler, which can greatly reduce the working noise when the centrifugal fan assembly is working, thereby reducing the surrounding noise pollution and enhancing the practicality of the device.

[0018] 3. The trolley assembly of the utility model is provided with a movable foot support, which can further stabilize the trolley assembly when the centrifugal fan assembly is working, thereby preventing the trolley from sliding due to the thrust when the centrifugal fan assembly is exhausting air.

[0019] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The present invention is further described below with reference to the accompanying drawings and embodiments;

[0021] Figure 1 This is a schematic diagram of the overall structure of a ground-based aircraft engine cooling device of the utility model;

[0022] Figure 2 This is a side structural schematic diagram of a ground-based aircraft engine cooling device of the utility model;

[0023] Figure 3 This is a structural schematic diagram of a trolley assembly of a ground-based aircraft engine cooling device of the utility model;

[0024] Figure 4 This is a schematic diagram of the internal structure of a duct air inlet assembly of a ground-based aircraft engine cooling device of the utility model;

[0025] Figure 5 This is a schematic diagram of the air duct connection structure of a centrifugal fan assembly of a ground-based aircraft engine cooling device of the utility model;

[0026] Figure 6The utility model is a structural schematic diagram of a movable foot support of an aircraft engine cooling device for ground support.

[0027] Legend:

[0028] 1. Pipe air inlet assembly; 11. Steel frame; 12. Fiberglass cloth cover; 13. Handrail steel pipe; 14. Pipe connector; 2. Centrifugal fan assembly; 21. Air duct; 22. Centrifugal fan body; 23. Explosion-proof motor; 24. Flow meter; 25. Thermometer; 26. Muffler; 3. Trolley assembly; 31. Trolley bracket; 32. Movable foot support; 33. Trolley handrail; 34. Universal wheel; 35. Motor bracket; 4. Electrical assembly; 41. Electric cabinet; 42. Power cable; 43. Low-voltage cable; 44. High-voltage cable; 45. Wire collection hook; 321. Side fixing seat; 322. Tap; 323. Turning handle; 324. Base. DETAILED DESCRIPTION

[0029] This section will describe in detail the specific embodiments of the utility model. The preferred embodiments of the utility model are shown in the accompanying drawings. The purpose of the accompanying drawings is to supplement the description of the text part of the specification with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the utility model, but it cannot be understood as a limitation on the protection scope of the utility model.

[0030] Reference Figure 1-6 The utility model provides an aircraft engine cooling device for ground support, including a trolley assembly 3 and an electrical assembly 4. The trolley assembly 3 includes a trolley bracket 31 and a trolley handrail 33. The upper end of the trolley bracket 31 is fixedly connected to the trolley handrail 33. The bottom four corners of the trolley bracket 31 are fixedly connected to universal wheels 34. Both ends of one side of the trolley bracket 31 are provided with movable foot supports 32. The movable foot supports 32 include a side fixing seat 321, a tap 322, a rotating handle 323 and a base 324. Both ends of the trolley bracket 31 are provided with There are square holes, the inner sides of the two square holes are fixedly connected with side fixing seats 321, the middle parts of the two side fixing seats 321 are threadedly connected with taps 322, the tops of the two taps 322 are fixedly connected with rotating handles 323, and the bottoms of the two taps 322 are movably connected with bases 324, which can further stabilize the trolley assembly 3 when the centrifugal fan assembly 2 is working to prevent the trolley from sliding due to the thrust when the centrifugal fan assembly 2 is exhausting air. A motor bracket 35 is fixedly connected to the upper middle part of the trolley bracket 31;

[0031] The top of the motor bracket 35 is fixedly connected with a centrifugal fan assembly 2, and the centrifugal fan assembly 2 includes an air duct 21, a centrifugal fan body 22 and an explosion-proof motor 23. The air inlet of the centrifugal fan body 22 is fixedly connected with the air duct 21. The centrifugal fan body 22 is a boiler exhaust fan, and the air duct 21 is a high-temperature resistant smoke exhaust pipe. The end of the air duct 21 away from the centrifugal fan body 22 is fixedly connected with a pipeline air inlet assembly 1, which can be adapted to different engine tail nozzle models by replacing different cloth cover assemblies. A clamp is provided at the air inlet of the centrifugal fan body 22, and a flow meter 24 and a thermometer 25 are fixedly plugged into the clamp. The bottom of the explosion-proof motor 23 is fixedly connected to the motor bracket 35, and a muffler 26 is fixedly connected to the air outlet of the centrifugal fan body 22, which can greatly reduce the working noise when the centrifugal fan assembly is working, thereby reducing the surrounding noise pollution;

[0032] The duct air inlet assembly 1 comprises a steel frame 11, a glass fiber cloth cover 12, a handrail steel pipe 13 and a pipe connector 14. The outer side of the steel frame 11 is fixedly sleeved with a glass fiber cloth cover 12. The steel frame 11 is evenly and evenly fixedly connected with the handrail steel pipe 13 on all sides. The inner end of the handrail steel pipe 13 is fixedly connected to the steel frame 11 through a quick-change pin shaft. The outer end of the handrail steel pipe 13 is provided with a handrail cover. The lower side of the glass fiber cloth cover 12 is fixedly connected to the air duct 21 through the pipe connector 14. The outer side of the glass fiber cloth cover 12 is evenly and evenly fixed. A plurality of tie hook straps are connected to connect with the tail end of the engine and the steel frame 11. Compared with the method of using a blower to blow directly in the direction of the air inlet of the aircraft engine, when cooling the tail of the aircraft engine, the negative pressure formed by the centrifugal fan assembly 2 can make the flexible glass fiber cloth cover 12 of the duct air inlet assembly 1 close to the aircraft engine body, forming a certain self-sealing property, with less sealing difficulty, less cooling flow loss, and a smaller diameter of the tail of the aircraft engine, which is conducive to the lightweight design of the duct air inlet assembly;

[0033] The electrical component 4 includes an electrical cabinet 41, a power cable 42, a weak-current cable 43, a strong-current cable 44 and a wire-reeling hook 45. The power cable 42 is arranged at the lower part of one side of the electrical cabinet 41, and a strong-current cable 44 is arranged at the lower part of the middle part of the side of the electrical cabinet 41 close to the power cable 42. A weak-current cable 43 is arranged at the lower part of the side of the electrical cabinet 41 close to the strong-current cable 44. The electrical cabinet 41 is electrically connected to the centrifugal fan assembly 2 through the weak-current cable 43, the strong-current cable 44 and the corresponding aviation plug. A wire-reeling hook 45 is fixedly connected at the upper part of the side of the electrical cabinet 41 close to the strong-current cable 44 and the positions corresponding to the power cable 42, the weak-current cable 43 and the strong-current cable 44 to facilitate the wire-reeling of the cable. The utility model can set different gears through the electrical cabinet 41 to change the cooling efficiency according to the use requirements. The high-temperature engine tail nozzle can be cooled to a predetermined temperature for normal borehole exploration and service work within 40 minutes at the fastest.

[0034] Working principle: When the utility model is working, the duct air inlet assembly 1 is connected to the tail of the aircraft engine, and the negative pressure formed by the centrifugal fan assembly 2 is used for direct suction and heat dissipation. Compared with the method of using a blower to blow directly in the direction of the aircraft engine air inlet, when directly sucking the tail of the aircraft engine, the negative pressure formed by the centrifugal fan assembly 2 can make the glass fiber cloth cover 12 of the duct air inlet assembly 1 close to the aircraft engine body, forming a certain self-sealing property, with less sealing difficulty and less cooling flow loss. In addition, the diameter of the tail of the aircraft engine is smaller, which is conducive to the lightweight design of the duct air inlet assembly 1, convenient for disassembly and assembly by ground crew, and enhances the practicability of the device.

[0035] The embodiments of the present invention are described in detail above in conjunction with the accompanying drawings, but the present invention is not limited to the above embodiments. Various changes can be made within the knowledge scope of ordinary technicians in the technical field without departing from the purpose of the present invention.

Claims

1. A cooling device for an aircraft engine for ground support, comprising a trolley assembly (3) and an electrical assembly (4), characterized in that: The trolley assembly (3) comprises a trolley bracket (31) and a trolley handrail (33); the upper end of the trolley bracket (31) is fixedly connected to the trolley handrail (33); the four corners of the bottom of the trolley bracket (31) are fixedly connected to universal wheels (34); movable foot supports (32) are provided at both ends of one side of the trolley bracket (31); and a motor bracket (35) is fixedly connected to the upper middle portion of the trolley bracket (31); The top of the motor bracket (35) is fixedly connected to a centrifugal fan assembly (2), the centrifugal fan assembly (2) comprising an air duct (21), a centrifugal fan body (22) and an explosion-proof motor (23); the air inlet of the centrifugal fan body (22) is fixedly connected to the air duct (21), one end of the air duct (21) away from the centrifugal fan body (22) is fixedly connected to a duct air inlet assembly (1), the bottom of the explosion-proof motor (23) is fixedly connected to the motor bracket (35), and the air outlet of the centrifugal fan body (22) is fixedly connected to a muffler (26); The duct air inlet assembly (1) comprises a steel frame (11), a glass fiber cloth cover (12), a handrail steel pipe (13) and a duct connector (14); the glass fiber cloth cover (12) is fixedly sleeved on the outer side of the steel frame (11); the handrail steel pipe (13) is fixedly connected to the surrounding of the steel frame (11) at equal intervals; and the bottom of the glass fiber cloth cover (12) is fixedly connected to the air duct (21) via the duct connector (14); The electrical assembly (4) comprises an electrical cabinet (41), a power cable (42), a weak-current cable (43), a strong-current cable (44) and a wire-collecting hook (45); the power cable (42) is arranged below one side of the electrical cabinet (41); the strong-current cable (44) is arranged below the middle of one side of the electrical cabinet (41) close to the power cable (42); the weak-current cable (43) is arranged below one side of the electrical cabinet (41) close to the strong-current cable (44); and the wire-collecting hook (45) is fixedly connected to positions corresponding to the power cable (42), the weak-current cable (43) and the strong-current cable (44) above one side of the electrical cabinet (41) close to the strong-current cable (44).

2. The ground-based aircraft engine cooling device according to claim 1, characterized in that: The movable foot support (32) comprises a side fixing seat (321), a tap (322), a rotating handle (323) and a base (324); both ends of the trolley support (31) are provided with square holes; the inner sides of the two square holes are fixedly connected to the side fixing seats (321); the middle parts of the two side fixing seats (321) are threadedly connected to the taps (322); the tops of the two taps (322) are fixedly connected to the rotating handles (323); and the bottoms of the two taps (322) are movably connected to the base (324).

3. The ground-based aircraft engine cooling device according to claim 1, characterized in that: The electric cabinet (41) is electrically connected to the centrifugal fan assembly (2) via a weak-current cable (43) and a strong-current cable (44).

4. The cooling device for ground-based aircraft engines according to claim 1, characterized in that: A plurality of tie hook straps are fixedly connected at equal intervals to the outer side of the glass fiber cloth cover (12).

5. The ground-based aircraft engine cooling device according to claim 1, characterized in that: The centrifugal fan body (22) is a boiler exhaust fan, and the air duct (21) is a high-temperature resistant smoke exhaust duct.

6. The cooling device for ground-based aircraft engines according to claim 1, characterized in that: An inner end of the handrail steel pipe (13) is fixedly clamped to the steel frame (11) via a quick-change pin shaft, and an outer end of the handrail steel pipe (13) is provided with an handrail cover.

7. The ground-based aircraft engine cooling device according to claim 1, characterized in that: A clamp is provided at the air inlet of the centrifugal fan body (22), and a flow meter (24) and a thermometer (25) are fixedly plugged into the clamp.

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