Aviation engine combustion chamber borescope inspection simulator

Abstract

The utility model relates to the technical field of simulators, and discloses an aviation engine combustion chamber borescope inspection simulator which comprises an inner cylinder and an outer cylinder which are coaxially arranged, the rear ends of the inner cylinder and the outer cylinder are detachably connected with a plurality of guide blades in the circumferential direction, and the front ends of the inner cylinder and the outer cylinder are detachably connected with a plurality of fuel nozzles in the circumferential direction. A partition plate is detachably arranged at the end, close to the fuel nozzle, of the interior of the inner barrel, and the inner barrel and the outer barrel are each provided with a plurality of hole exploring openings and detachably provided with a plurality of sector plates. According to the utility model, corresponding guide blades and partition plates can be mounted and dismounted according to the structures of different engines, engine combustion chambers of different models can be simulated, and the positions of corresponding air detection ports can be changed, so that students can conveniently and quickly master the inspection of different engines, and the on-wing engine does not need to be directly used as a practical operation object; potential safety hazards possibly caused to the on-wing engine are avoided, trainees can be trained without limitation, and therefore the training period of the trainees can be effectively shortened.

Description

Technical Field

[0001] The utility model relates to the technical field of simulators, in particular to an aero-engine combustion chamber borescope inspection simulator. Background Art

[0002] As the power source of an aircraft, the safety of an aero-engine is of vital importance. Therefore, the engine needs to be inspected regularly to ensure its safety. In order to inspect the technical state of the engine inside the wing, the currently commonly used method is the borescope technology, that is, using an industrial endoscope (borescope) to inspect the state of internal parts (core engine) to draw a conclusion on whether the engine is airworthy.

[0003] During the inspection process, for the fixed parts of the engine, such as the inspection of the combustion chamber, a winding inspection is required. At the same time, in order to improve the combustion efficiency, there are large and small mixing holes inside the combustion chambers of current mainstream engines, which also increases the risk of jamming. Therefore, it is usually necessary for technicians with mature skills to perform the winding borescope inspection of the combustion chamber, and a large amount of training is required for the inspectors.

[0004] Currently, the trainee borescope operators mainly use the in-wing engine as the actual operation object. This not only makes it difficult to meet the training time, but also has a single aircraft type, which is not conducive to the rapid growth of personnel. At the same time, the trainees are all inexperienced, and there will also be situations where jamming occurs during the actual operation, affecting the operation, and even adverse events affecting safety may occur.

[0005] Another training method is in the training center of the engine original factory. Although this can provide real engines of various models produced by it for trainees to use, if this training method is adopted, it will greatly increase the training cost and cycle of personnel. Content of the Utility Model

[0006] To solve the above technical problems, the utility model provides an aero-engine combustion chamber borescope inspection simulator, which simulates the combustion chambers of various engines for trainees to train, does not directly use the in-wing engine as the actual operation object, avoids potential safety hazards, and reduces the training cycle of trainees.

[0007] The technical solution adopted by the utility model to solve its technical problems is:

[0008] An aero-engine combustion chamber borescope inspection simulator includes an inner cylinder and an outer cylinder arranged coaxially, and the inner cylinder is arranged inside the outer cylinder. A plurality of guide vanes are detachably connected to the rear ends of the inner cylinder and the outer cylinder in the circumferential direction. A plurality of fuel nozzles are detachably connected to the front ends of the inner cylinder and the outer cylinder in the circumferential direction. A partition is detachably arranged at one end of the inner cylinder close to the fuel nozzle. A plurality of borescope ports are arranged on both the inner cylinder and the outer cylinder, and a plurality of sector plates are detachably arranged.

[0009] Preferably, it includes an installation platform, the inner cylinder and the outer cylinder are both installed on the installation platform, and rollers are provided at the bottom of the installation platform.

[0010] Preferably, two struts are provided on the installation platform and are arranged oppositely, and a fixing rod is provided between the two struts, and the inner cylinder is sleeved on the fixing rod.

[0011] Preferably, a bracket is provided on the inner wall of the inner cylinder, and the bracket is connected to the fixing rod.

[0012] Preferably, it further includes a casing provided on the installation platform, the inner cylinder and the outer cylinder are both arranged in the casing, transparent end caps are detachably provided at both ends of the casing, and a plurality of inspection ports are provided on the outer wall of the casing.

[0013] Preferably, the casing is formed by splicing two casing units, and one side of the two casing units is hinged, and a handle is provided on the other side of any one of the casing units.

[0014] Preferably, the sector plate is connected to the inner cylinder or the outer cylinder by bolts.

[0015] Preferably, the guide vanes are manufactured by 3D printing and are connected to the inner cylinder and the outer cylinder by bolts.

[0016] Compared with the prior art, an aero-engine combustion chamber borescope inspection simulator according to an embodiment of the present invention has the beneficial effects that by providing an inner cylinder and an outer cylinder, and connecting guide vanes and fuel nozzles at both ends thereof respectively, the simulation of the combustion chamber can be realized. At the same time, since the guide vanes, sector plates and partition plates are all detachable, the installation and disassembly of the corresponding guide vanes and partition plates can be carried out according to the structures of different engines, and combustion chambers of different models of engines can be simulated. By combining with changing the positions of the corresponding inspection ports, it is used for the training of trainees. It not only facilitates the trainees to quickly master the inspections of different engines, but also does not directly use the in-wing engine as the actual operation object, avoiding potential safety hazards to the in-wing engine, and the trainees can also be trained without restrictions, thereby effectively reducing the training cycle of the trainees. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a schematic structural diagram of the aero-engine combustion chamber borescope inspection simulator of the present invention.

[0018] Figure 2 is Figure 1 the left view of

[0019] Figure 3 is Figure 1 the right view of

[0020] Figure 4 is the side view of the casing.

[0021] Wherein: 1 - mounting table, 2 - outer cylinder, 3 - inner cylinder, 4 - guide vane, 5 - borescope port, 6 - fuel nozzle, 7 - support rod, 8 - fixing rod, 9 - roller, 10 - partition plate, 11 - sector plate, 12 - casing, 13 - handle. Specific embodiments

[0022] The following will further describe in detail the specific embodiments of the present invention in conjunction with the accompanying drawings and embodiments. The following embodiments are used to illustrate the present invention, but are not used to limit the scope of the present invention.

[0023] In the present invention, unless otherwise clearly defined and limited, terms such as "installation", "connection", "connection", "fixation" and other terms should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components or the interaction relationship between two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0024] As Figures 1 - 3 shown, a borescope inspection simulator for an aero-engine combustion chamber according to a preferred embodiment of the present invention includes an inner cylinder 3 and an outer cylinder 2 arranged coaxially, and the inner cylinder 3 is arranged inside the outer cylinder 2. A plurality of guide vanes 4 are detachably connected to the rear ends of the inner cylinder 3 and the outer cylinder 2 in the circumferential direction, and a plurality of fuel nozzles 6 are detachably connected to the front ends of the inner cylinder 3 and the outer cylinder 2 in the circumferential direction. A partition plate 10 is detachably provided at one end of the inner cylinder 3 close to the fuel nozzle 6. A plurality of borescope ports 5 are provided on both the inner cylinder 3 and the outer cylinder 2, and a plurality of sector plates 11 are detachably provided on both the inner cylinder 3 and the outer cylinder 2.

[0025] Based on the above technical features, the borescope inspection simulator for an aero-engine combustion chamber can simulate the combustion chamber by setting the inner cylinder 3 and the outer cylinder 2 and connecting the guide vanes 4 and the fuel nozzles 6 at both ends thereof. At the same time, since the guide vanes 4, the sector plates 11 and the partition plates 10 are all detachable, the installation and disassembly of the corresponding guide vanes 4 and partition plates 10 can be carried out according to the structures of different engines, and combustion chambers of different models of engines can be simulated. By combining with changing the positions of the corresponding borescope ports 5, it is used for the training of trainees. It not only facilitates the trainees to quickly master the inspections of different engines, but also does not directly use the in-wing engine as the actual operation object, avoiding potential safety hazards to the in-wing engine. The trainees can also be trained without restrictions, thereby effectively reducing the training cycle of the trainees.

[0026] The inner cylinder 3 and the outer cylinder 2 are made in the structure of a certain model of engine combustion chamber, simulating the annular structure of the combustion chamber, which is close to the actual situation and can enhance the over-the-top winding ability of borescope personnel. In addition, the combustion chamber can be divided into a fuel nozzle area, an inner and outer cylinder area, and a guide vane area, and separate continuous inspections can be carried out on the three areas respectively. Compared with the traditional method of inspecting the three areas at one time during the extraction process, the "zone inspection method" can enable the borescope operator to concentrate attention on one place, and can avoid the risk of missed inspection caused by distraction of attention.

[0027] In this embodiment, it includes an installation platform 1. The inner cylinder 3 and the outer cylinder 2 are both installed on the installation platform 1, and rollers 9 are provided at the bottom of the installation platform 1. Thus, the rapid movement of the aero-engine combustion chamber borescope inspection simulator can be realized, and the implementation of training is not restricted by the site. Therefore, the growth speed of personnel can be greatly improved, the training cycle can be shortened, time costs can be saved, and benefits can be created.

[0028] At the same time, two support rods 7 are provided on the installation platform 1 and are arranged oppositely. A fixing rod 8 is provided at the upper ends between the two support rods 7, and the inner cylinder 3 is sleeved on the fixing rod 8, thereby realizing the fixed connection of the inner cylinder 3 corresponding to the support frame 1.

[0029] In addition, for the convenience of connecting the inner cylinder 3 and the fixing rod 8, a bracket is provided on the inner wall of the inner cylinder 3, and the bracket is connected to the fixing rod 8.

[0030] In this embodiment, the aero-engine combustion chamber borescope inspection simulator further includes a casing 12 provided on the installation platform 1. The inner cylinder 3 and the outer cylinder 2 are both arranged inside the casing 12. Transparent end caps are detachably provided at both ends of the casing 12, and a number of borescope ports 5 are provided on the outer wall of the casing 12. For example, the end cap can be connected to the casing 12 by a snap connection method. However, for the snap connection method, an avoidance groove needs to be provided on the end cap, and the avoidance groove passes through the support rod 7 during installation. The end cap can also be hinged to the casing. When hinged, two cover bodies can be provided, and the support rod is located between the two cover bodies when closed. The end cap is detachable, which is convenient for replacing the components inside the inner cylinder 3 and the outer cylinder 2.

[0031] At the same time, by making the end cap with a transparent material, the internal operation situation can be observed through the end cap, and the operation key points and essentials can be taught. Through the short-term repeated practice of borescope trainees, the borescope personnel can grow rapidly, and it can also be used as a window for observing and evaluating during the assessment of personnel.

[0032] Please refer to the appendix Figure 3, the casing 12 is formed by splicing two casing units, and one side of the two casing units is hinged. A handle 13 is provided on the other side of any one of the casing units. The handle 13 is for operation and can be used to open or close the two casing units. When corresponding parts need to be replaced, the casing 12 can be opened for convenient operation, and after installation, the casing 12 is closed.

[0033] Due to the different structures in the combustion chambers of each engine model, the difficulty of threading will also vary. In the present invention, by using the partition 10 and the guide vanes 4, different forms of prefabricated module components are made through 3D printing technology according to the structural characteristics of different engines, and then fixed on the inner cylinder 3 or the outer cylinder 2 by bolts to adjust the axial length of the combustion chamber. The sector plate is fixed on the inner cylinder 3 or the outer cylinder 2 by bolts according to the required position, imitating the structure of different sector plates 11 in different combustion chambers. Through the cooperation of the above two methods, the internal structure of the engine to be trained is assembled to simulate the structural differences of different engine models.

[0034] In addition, the aero-engine combustion chamber borescope inspection simulator may further include a simulation part with a specific damage mode, and the simulation part is detachably arranged on the inner cylinder 3 and / or the outer cylinder 2. By replacing the internal components of the combustion chamber and simulating specific damages, the discrimination ability and measurement and evaluation ability of the borescope personnel for damages can be improved, achieving the purpose of "training with fakes to practice the real", and quickly mastering the inspection ability. The connection method between the simulation part and the inner cylinder 3 and the outer cylinder 3 can adopt the cooperation method of a card slot and a card strip, or can also adopt the connection method of a connection groove and a protrusion.

[0035] The risk of jamming in the borescope inspection of the combustion chamber is relatively high. However, by using the simulator of the present application for training, such a risk can be eliminated, and abnormal operation events caused by jamming, damage to the borescope, and even major events such as engine damage and shutdown can be avoided. The simulator can be used to simulate real jamming cases in work, allowing the borescope personnel to learn the normal operations during jamming, avoiding secondary injuries, and further improving the skill level of the personnel.

[0036] In summary, the present application has the following advantages:

[0037] 1. Innovation

[0038] 1) Simulating the annular structure of the combustion chamber, being close to the actual situation, and can strengthen the over-the-top threading ability of the borescope personnel;

[0039] 2) Installing a quickly detachable partition 10 in the simulator to imitate the internal structure and axial length of the combustion chambers of different engine models, realizing "one machine with multiple functions";

[0040] 3) Reserve installation positions at specific locations on the inner and outer cylinders for installing simulation components of specific damage modes, so as to achieve the purpose of "training with simulated scenarios".

[0041] 4) Set transparent visible end caps at the front and rear of the simulator to improve personnel's spatial recognition ability and provide an "observation window" for later personnel assessment.

[0042] 2. Economy

[0043] 1) This simulator allows borescope personnel to practice anytime and anywhere, thus greatly improving the growth rate of personnel, shortening the training cycle, saving time costs, and creating benefits.

[0044] 2) The feature that one simulator is compatible with multiple models meets the training needs of multiple types of engines, eliminating the need to develop teaching aids for each model separately, thus saving economic costs.

[0045] 3) Avoiding on-wing engine operation can enable the aircraft to be quickly put into operation and also improve the economic benefits of the airline.

[0046] 3. Safety

[0047] 1) There is a relatively high risk of jamming during borescope inspection of the combustion chamber. If a simulator is used for training, this risk can be eliminated, avoiding abnormal operation events, borescope damage, and even major events such as engine damage and shutdown caused by jamming.

[0048] 2) This simulator can be used to simulate real jamming cases in work, enabling borescope personnel to learn the correct operations during jamming, avoiding secondary injuries, and further improving the personnel's skill level.

[0049] The above are only the preferred embodiments of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the technical principles of the present invention, several improvements and substitutions can be made, and these improvements and substitutions should also be regarded as the protection scope of the present invention.

Claims

1. An aviation engine combustion chamber borescope inspection simulator, characterized in that: It comprises an inner cylinder and an outer cylinder which are coaxially arranged, and the inner cylinder is arranged inside the outer cylinder, the rear ends of the inner cylinder and the outer cylinder are detachably connected with a plurality of guide vanes along the circumferential direction, the front ends of the inner cylinder and the outer cylinder are detachably connected with a plurality of fuel nozzles along the circumferential direction, a partition is detachably provided at one end of the inner cylinder near the fuel nozzle, the inner cylinder and the outer cylinder are both provided with a plurality of hole probes, and a plurality of fan-shaped plates are detachably provided.

2. The aircraft engine combustion chamber borescope inspection simulator according to claim 1, characterized in that: It comprises a mounting platform, the inner cylinder and the outer cylinder are both mounted on the mounting platform, and rollers are arranged at the bottom of the mounting platform.

3. The aircraft engine combustion chamber borescope inspection simulator according to claim 2, characterized in that: The mounting platform is provided with two support rods arranged opposite to each other, a fixing rod is provided between the two support rods, and the inner tube is sleeved on the fixing rod.

4. The aircraft engine combustion chamber borescope inspection simulator as claimed in claim 3, characterized in that: A bracket is provided on the inner wall of the inner cylinder, and the bracket is connected to the fixing rod.

5. The aircraft engine combustion chamber borescope inspection simulator as claimed in claim 2, characterized in that: It also includes a casing arranged on the mounting platform, wherein the inner tube and the outer tube are both arranged in the casing, transparent end covers are detachably provided at both ends of the casing, and a plurality of holes are provided on the outer wall of the casing.

6. The aircraft engine combustion chamber borescope inspection simulator as claimed in claim 5, characterized in that: The receiver is formed by splicing two receiver units, and one side of the two receiver units is hinged, and a handle is provided on the other side of any one of the receiver units.

7. The aircraft engine combustion chamber borescope inspection simulator according to any one of claims 1 to 6, characterized in that: The sector plate is connected to the inner cylinder or the outer cylinder by bolts.

8. The aircraft engine combustion chamber borescope inspection simulator according to any one of claims 1 to 6, characterized in that: The guide blades are manufactured by 3D printing and are connected to the inner cylinder and the outer cylinder by bolts.

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