Rapid cooling tool for civil aero-engine

Abstract

A rapid cooling tool for a civil aero-engine comprises a trolley, and an air pipe, a fan and a storage battery are detachably arranged on the trolley. The large-diameter first end of the air pipe is connected with an engine tail nozzle, the small-diameter second end of the air pipe is connected with the draught fan, and the storage battery is electrically connected with the draught fan. Openings at the two ends of the air pipe are respectively provided with a covered edge, and an elastic rope is arranged in each covered edge in a penetrating mode. A first drawing rope is further arranged on the covered edge of the first large-caliber end of the air pipe; a second drawing rope is further arranged on the covered edge of the second end of the small caliber of the air pipe; a plurality of supporting ribs are arranged in the air pipe at intervals. A plurality of anti-falling pulling ropes are evenly arranged on the supporting rib at the first end of the air pipe in the circumferential direction, and an anti-falling pin is arranged at the tail end of each anti-falling pulling rope. The rapid cooling tool for the civil aero-engine is simple in structure, small in size, portable, convenient to use, low in manufacturing cost and capable of efficiently and rapidly cooling the civil aero-engine.

Description

Technical Field

[0001] The utility model relates to the field of ground maintenance of civil aircraft, in particular to a rapid cooling tooling for aero engines. Background Technique

[0002] A civil aviation engine is a component that provides power for an aircraft to fly, and its condition is crucial for flight safety. Usually, the inside of the engine is inspected regularly or temporarily through an endoscope to confirm that its condition meets the requirements of safe flight. When performing an endoscope inspection, it is necessary to cool the temperature of the core area of the engine below 65.6 °C, otherwise the high temperature will damage the expensive endoscope equipment (the value of the endoscope equipment is about 600,000 - 800,000 yuan).

[0003] An airline company aims to achieve economic benefits by increasing the utilization rate of aircraft. Usually, it will not conduct a special ground stop for the engine endoscope inspection work. In many cases, the engine endoscope inspection work is arranged between the end of a flight and the pre-flight inspection the next day, and the available time is about 8 - 12 hours. The temperature of the core area of the engine just stopped running is about 280 °C - 330 °C. If it is naturally cooled on the apron, it takes about 6 - 8 hours to cool down to 65.6 °C. Since the natural cooling of the engine takes a long time, it seriously affects the efficiency of the ground maintenance personnel in performing the endoscope inspection on the engine.

[0004] Currently, the commonly used engine cooling method in the industry is to perform natural cooling after engine cold rotation. However, this method still has the following defects:

[0005] 1) According to the requirements of the engine manufacturer's technical manual, there are time limit and number limit for cold rotation. The cold rotation of the engine requires an authorized test run personnel to operate, and at the same time, a supervisor needs to be assigned to monitor under the aircraft, wasting human resources.

[0006] 2) The cold rotation of the engine also increases the number of engine usage cycles and reduces the service life of the engine;

[0007] 3) The natural cooling after the cold rotation of the engine still takes 2 - 4 hours, and still cannot overcome the problems of long time consumption and low efficiency.

[0008] In addition, some airline companies have self-made air extraction equipment to assist in the heat dissipation and cooling of the engine, but this method also has many defects, specifically as follows:

[0009] 4) Portability: There are controls on larger ladder / metal frame tools and equipment on the airport apron, and there are certain requirements for their storage and movement. The air ducts, fans, and support frames of self-made products are all made of metal, with a large volume and heavy weight, and need to be installed with wheels to be pushed / slid. When moving on the airport apron, it needs to be towed by a pickup truck, and the storage management and mobile transportation are more troublesome, and it does not have portability.

[0010] 5) General applicability: The shapes and sizes of the engine tail nozzles of various models are different. The existing technology products are metal air ducts / air cylinders, which are made for a specific model and do not have the general applicability for multiple models.

[0011] 6) High manufacturing cost: The self-made products are all made of metal, and some connections require welding. The complex structure results in a relatively high cost. Moreover, when large equipment is stored at the airport, relevant procedures need to be handled, which incurs certain management costs.

[0012] 7) Risks during use: Tools and equipment such as ladders / metal frames used around the aircraft pose a risk of colliding with the aircraft. If the aircraft is collided, significant economic losses will occur.

[0013] Due to the above reasons, the self-made air extraction auxiliary engine cooling equipment has not been widely used. Content of the Utility Model

[0014] In view of the deficiencies of the existing technology, the present utility model provides a rapid cooling tooling for civil aviation engines to overcome the deficiencies in the existing technology.

[0015] To achieve the above objectives, the present utility model is realized through the following technical solutions:

[0016] A rapid cooling tooling for civil aviation engines includes a trolley, on which an air duct, a fan and a storage battery are detachably arranged; the first end with a large diameter of the air duct is connected to the engine tail nozzle, the second end with a small diameter of the air duct is connected to the fan, and the storage battery is electrically connected to the fan;

[0017] Edges are respectively arranged at the two open ends of the air duct, and elastic ropes are respectively threaded inside the edges; a first drawstring is further arranged on the edge of the first end with a large diameter of the air duct; a second drawstring is further arranged on the edge of the second end with a small diameter of the air duct; and a number of support ribs are also arranged at intervals inside the air duct.

[0018] Furthermore, a number of anti-detachment traction ropes are evenly arranged along the circumferential direction on the support ribs at the first end of the air duct, and an anti-detachment pin is arranged at the end of each anti-detachment traction rope.

[0019] Furthermore, a storage and positioning component is also arranged on the trolley, and the storage and positioning component includes a U-shaped frame and a J-shaped positioning pin; a positioning pin hole is arranged on the U-shaped frame to cooperate with the hook on the J-shaped positioning pin; the U-shaped frame is rotatably installed on the top surface of the trolley frame through a pipe clamp; the J-shaped positioning pin is rotatably installed on the top surface of the trolley frame through a pipe clamp.

[0020] Preferably, a toolbox is also detachably arranged on the trolley, and the fan and the storage battery are arranged side by side on the top surface of the toolbox.

[0021] Preferably, the air duct is a PVC mesh tube, and its tube body is made of PVC mesh cloth.

[0022] Preferably, the support ribs are arranged at intervals of 15 cm, and the support ribs are made of steel wires.

[0023] Preferably, the trolley frame is also provided with lockable universal wheels.

[0024] Preferably, the fan is a high-temperature resistant and explosion-proof portable axial flow fan, with the model of "BSFT-300".

[0025] Preferably, the anti-detachment pin and the anti-detachment traction rope are both detachably installed on the air duct through quick-release connectors.

[0026] Preferably, the toolbox, the fan and the battery are all detachably installed on the trolley through quick-release connectors. In addition to being electrically connected to the battery, the fan can also be externally connected to a 220V power supply.

[0027] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0028] 1) A rapid cooling tooling for civil aviation engines in this case has a simple structure, small volume, portability, convenient use and low manufacturing cost. It can efficiently cool the engine quickly by means of air extraction by the fan, with less cooling time, and also saves the service life of the engine and the labor cost of maintenance work.

[0029] 2) A rapid cooling tooling for civil aviation engines in this case is respectively provided with edges at both openings of the air duct, and elastic ropes are respectively threaded inside the edges, so that the two openings of the air duct can be expanded. Such a design can not only make the air duct fit more closely with the engine tail nozzle or the fan, but also enable the air duct to adapt to more models of engine tail nozzles or more models of fans, with strong adaptability.

[0030] 3) A rapid cooling tooling for civil aviation engines in this case, the weight of the air duct is about 5 kg, the weight of the fan is about 10 kg, and the battery is about 5 kg. Each component is relatively light and can be transported separately or quickly integrated onto the trolley and transported to the maintenance site, which is conducive to popularization and use at various airports and aircraft maintenance bases.

[0031] 4) A rapid cooling tooling for civil aviation engines in this case, the air duct is made of PVC mesh cloth, which is high-temperature resistant, wear-resistant, and the whole is a telescopic flexible connection, effectively avoiding the risk of rigid collision with the engine and not damaging the aircraft.

[0032] In order to understand the present utility model more clearly, the preferred embodiments of the present utility model will be described below in conjunction with the accompanying drawings. Description of the Drawings

[0033] Figure 1 , Figure 2 is a reference diagram of the usage state of the present utility model;

[0034] Figure 3 is a reference diagram of the erected state of the storage and positioning component in the present utility model;

[0035] Figure 4 is a reference diagram of the state where the air duct is stored and placed on the storage and positioning component in the present utility model.

[0036] Reference signs in the drawings:

[0037] 1 - trolley, 2 - air duct, 3 - fan, 4 - storage battery; 21 - first drawstring, 22 - second drawstring, 23 - support rib; 5 - anti - detachment towing rope, 51 - anti - detachment pin; 61 - U - shaped frame, 62 - J - shaped positioning pin; 7 - toolbox; 11 - universal wheel. Detailed implementation manners

[0038] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is 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. In the description of the present utility model, unless otherwise specified, the meaning of "a plurality of" is two or more.

[0039] In addition, terms such as "first" and "second" are only used for descriptive purposes, mainly for distinguishing different devices, elements or components (the specific types and structures may be the same or different), and do not indicate or imply the relative importance and quantity of the indicated devices, elements or components, and should not be construed as indicating or implying relative importance.

[0040] In addition, it should be noted that unless otherwise clearly specified and defined, terms such as "installed", "provided with", "sheathed / connected", "connected", etc. should be understood in a broad sense. For example, "connected" 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 directly connected or indirectly connected through an intermediate medium, and can 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 situations.

[0041] Please refer to Figures 1-4, the present utility model provides a rapid cooling tooling for a civil aviation engine, including a trolley 1, and an air duct 2, a fan 3 and a storage battery 4 detachably arranged on the trolley 1; the air duct 2 is conical as a whole, the first end with a large diameter of the air duct 2 is connected to the engine tail nozzle (not shown in the figure), and the second end with a small diameter of the air duct 2 is connected to the fan 3; the storage battery 4 is electrically connected to the fan 3, and the storage battery 4 is used to supply power to the fan 3 in a scenario without a 220V power supply.

[0042] Furthermore, edges are respectively arranged at the openings at both ends of the air duct 2, and elastic ropes are respectively threaded inside the edges, so that the openings at both ends of the air duct 2 can be expanded. Such a design can not only make the air duct 2 dock more tightly with the engine tail nozzle or the fan 3, but also enable the air duct 2 to adapt to more models of engine tail nozzles or more models of fans 3, enhancing the adaptability of the air duct 2.

[0043] Furthermore, a first drawstring 21 is also arranged on the edge of the first end with a large diameter of the air duct 2, and the first drawstring 21 is used to seal and tie the first end of the air duct 2 to the engine tail nozzle; a second drawstring 22 is also arranged on the edge of the second end with a small diameter of the air duct 2, and the second drawstring 22 is used to seal and tie the second end of the air duct 2 to the fan 3.

[0044] Furthermore, a plurality of support ribs 23 are also arranged at intervals inside the air duct 2, so that the air duct 2 is in a shape of a telescopic corrugated pipe as a whole. Preferably, in this embodiment, the support ribs 23 are arranged at intervals of 15 cm, and the support ribs 23 are made of steel wires, thereby playing a role in shaping the air duct 2.

[0045] Furthermore, a plurality of anti - detachment traction ropes 5 are evenly arranged along the circumferential direction on the support ribs 23 at the first end of the air duct 2, and an anti - detachment pin 51 is arranged at the end of each anti - detachment traction rope 5. The anti - detachment pin 51 is used to cooperate with a preset pin hole on the engine tail nozzle to ensure that the air duct 2 does not fall off the tail nozzle during the working process of this tooling.

[0046] Preferably, in this embodiment, the air duct 2 is a PVC mesh - lined pipe, and its pipe body is made of PVC mesh - lined cloth. PVC is the abbreviation of Polyvinyl chloride, which is commonly known as polyvinyl chloride in Chinese, making the air duct 2 resistant to high temperatures and abrasion.

[0047] Furthermore, a storage and positioning component is also provided on the trolley 1. The storage and positioning component is used to place the air duct 2 in a non-working state, so that the retracted air duct 2 can be placed and positioned on the trolley 1, ensuring that it is not easily displaced and dropped from the trolley 1 during transportation. The storage and positioning component includes a U-shaped frame 61 and a J-shaped positioning pin 62; a positioning pin hole is provided on the U-shaped frame 61 to cooperate with the hook on the J-shaped positioning pin 62; the U-shaped frame 61 is rotatably installed on the top surface of the trolley 1 frame through a pipe clamp, so that the U-shaped frame 61 can be erected or laid flat on the top surface of the trolley 1; the J-shaped positioning pin 62 is rotatably installed on the top surface of the trolley 1 frame through a pipe clamp, so that the J-shaped positioning pin 62 can be rotated or laid flat on the top surface of the trolley 1, and also so that the J-shaped positioning pin 62 can be rotated to align and insert its hook with the positioning pin hole on the erected U-shaped frame 61. After the hook of the J-shaped positioning pin 62 is inserted into the positioning pin hole on the erected U-shaped frame 61, the U-shaped frame 61 is kept in an erected state. At this time, the retracted air duct 2 is sleeved on the U-shaped frame 61, and the air duct 2 on the trolley 1 can be positioned to prevent the air duct 2 from falling off the trolley 1 during transportation. Since both the U-shaped frame 61 and the J-shaped positioning pin 62 can be laid flat on the trolley 1, they will not interfere with other uses of the trolley 1.

[0048] Furthermore, a toolbox 7 is detachably provided on the trolley 1. The blower 3 and the storage battery 4 are placed side by side on the top surface of the toolbox 7. By means of this toolbox 7, the blower 3 is elevated, so that after the blower 3 is docked with the second end of the air duct 2, the height of the small-diameter second end of the air duct 2 is raised, which is more conducive to the blower 3 extracting the hot air in the engine.

[0049] Preferably, in this embodiment, a self-locking universal wheel 11 is also provided on the frame of the trolley 1.

[0050] Preferably, in this embodiment, the toolbox 7, the blower 3 and the storage battery 4 are all detachably installed on the trolley 1 through quick-release connectors. In actual working conditions, they can be selected for assembly and disassembly according to actual working needs without interfering with other application functions of the trolley 1.

[0051] Preferably, in this embodiment, the blower 3 is a high-temperature resistant and explosion-proof portable axial flow blower, with the model "BSFT-300".

[0052] The usage process of a rapid cooling tooling for a civil aviation engine in this case in actual working conditions is as follows:

[0053] 1. Push the loaded trolley 1 to the side of the civil aviation engine to be worked on.

[0054] 2. Remove the air duct 2 from the storage and positioning assembly, and respectively dock its two ends to the engine tail nozzle and the fan 3: Tighten the first drawstring 21 and the second drawstring 22 at both ends of the air duct 2 to ensure the sealing of the docking; Tighten the anti-disengagement traction rope 5 and insert the anti-disengagement pin 51 into the original preset pin hole on the engine to prevent the air duct 2 from falling off the tail nozzle during operation.

[0055] 3. Electrically connect the fan 3 to the battery 4 and start the fan 3. The fan 3 extracts the hot air from the core area of the engine through the air duct 2 to achieve the purpose of quickly cooling the core area of the engine.

[0056] 4. After the work of quickly cooling the core area of the engine is completed, disassemble each component, place the U-shaped frame 61 on the trolley 1 and lock the J-shaped positioning pin 62, then put the contracted air duct 2 on the U-shaped frame 61, and finally transport each component to other places by the trolley 1.

[0057] Compared with the prior art, a rapid cooling tooling for a civil aviation engine in this case has a simple structure, small volume, portability, convenient use, and low manufacturing cost. It can efficiently cool the engine quickly by means of air extraction by the fan, with less time used for cooling, and also saves the service life of the engine and the labor cost of maintenance work.

[0058] The above embodiments only represent several implementation manners of the present invention, and the description is relatively specific and detailed, but it should not be construed as a limitation on the scope of the utility model patent. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present invention, several modifications and improvements can still be made, and these all belong to the protection scope of the present invention.

Claims

1. A rapid cooling tooling for a civil aviation engine, comprising a trolley (1), characterized in that: The trolley (1) is detachably provided with an air duct (2), a fan (3) and a storage battery (4); the first end with a large diameter of the air duct (2) is connected to the engine tail nozzle, and the second end with a small diameter of the air duct (2) is connected to the fan (3), and the storage battery (4) is electrically connected to the fan (3); Edges are respectively arranged at the openings at both ends of the air duct (2), and elastic ropes are respectively threaded inside the edges; a first drawstring (21) is further arranged on the edge of the first end with a large diameter of the air duct (2); a second drawstring (22) is further arranged on the edge of the second end with a small diameter of the air duct (2); and a plurality of support ribs (23) are also arranged at intervals inside the air duct (2).

2. The rapid cooling tooling for a civil aviation engine according to claim 1, characterized in that: A plurality of anti - detachment traction ropes (5) are evenly arranged along the circumferential direction on the support ribs (23) at the first end of the air duct (2), and an anti - detachment pin (51) is arranged at the end of each anti - detachment traction rope (5).

3. The rapid cooling tooling for a civil aviation engine according to claim 2, wherein: A storage and positioning assembly is further arranged on the trolley (1), and the storage and positioning assembly comprises a U - shaped frame (61) and a J - shaped positioning pin (62); a positioning pin hole is arranged on the U - shaped frame (61) to cooperate with the hook on the J - shaped positioning pin (62); the U - shaped frame (61) is rotatably installed on the top surface of the trolley (1) frame through a pipe clamp; and the J - shaped positioning pin (62) is rotatably installed on the top surface of the trolley (1) frame through a pipe clamp.

4. A rapid cooling tooling for a civil aviation engine according to claim 3, characterized in that: A toolbox (7) is further detachably arranged on the trolley (1), and the fan (3) and the storage battery (4) are arranged side by side on the top surface of the toolbox (7).

5. A rapid cooling tooling for a civil aviation engine according to claim 3, characterized in that: The air duct (2) is a PVC mesh - lined pipe, and its pipe body is made of PVC mesh - lined cloth.

6. The rapid cooling tooling for a civil aviation engine according to claim 3, characterized in that: The support ribs (23) are arranged at an interval of 15 cm, and the support ribs (23) are made of steel wires.

7. A rapid cooling tooling for a civil aviation engine according to claim 3, characterized in that: Self - locking universal wheels (11) are further arranged on the frame of the trolley (1).

8. A rapid cooling tooling for a civil aviation engine according to claim 3, characterized in that: The fan (3) is a high - temperature resistant and explosion - proof portable axial - flow fan, and the model is "BSFT - 300".

9. The rapid cooling tooling for a civil aviation engine according to claim 3, characterized in that: The anti - detachment pin (51) and the anti - detachment traction rope (5) are both detachably installed on the air duct (2) through quick - release connectors.

10. A rapid cooling tooling for a civil aviation engine according to claim 4, characterized in that: The toolbox (7), the fan (3) and the storage battery (4) are all detachably installed on the trolley (1) through quick - release connectors, and in addition to being electrically connected to the storage battery (4), the fan (3) can also be externally connected to a 220V power supply.

Images