A hole probe inspection auxiliary device for multiple components after aero-engine whole machine test run

Abstract

The application belongs to the technical field of engine maintenance, and particularly relates to a hole-probe inspection auxiliary device for multiple components after the whole engine test run. The device comprises a positioning chuck (1), a circumferential positioner (2) and a depth gauge (3), the positioning chuck (1) is fixed on a hole-probe instrument seat of an outer-duct casing (7), the circumferential positioner (2) is rotationally arranged at the middle opening of the positioning chuck (1) and has a pointer (24), the depth gauge (3) comprises multiple sliding sleeves and is slidingly arranged on the circumferential positioner (2), a detection line guide tube (6) penetrates through the multiple sliding sleeves and extends into the engine, when the circumferential positioner (2) is rotated, the bottom end of the detection line guide tube (6) is deflected at a specified height directly below the positioning groove (11). The application can determine the specific position of the detection probe and control the movement of the detection probe, and can realize the inspection of special positions and avoid the detection probe from being stuck during the detection process.

Description

Technical Field

[0001] This application belongs to the field of engine maintenance technology, specifically relating to an auxiliary device for borescope inspection of multiple components after the overall test run of an aero-engine. Background Technology

[0002] After a period of operation, aircraft engines require routine inspections. The inspection of multiple components is carried out using borescope inspection. Borescope inspection is a blind inspection, which means that the position of the inspection probe cannot be determined or its movement can be controlled during the inspection. The inspection results can only rely on the experience of the inspectors, and it is not possible to conduct a comprehensive and systematic inspection of the object being inspected. It is very easy to miss some cracks on the components, which will affect the evaluation of the components' performance.

[0003] Current borescope inspection involves inspectors operating a borescope. Depending on the specific inspection item, the borescope probe (flexible wire) enters the outer casing to inspect the components. This process is blind, as the actual position of the probe cannot be determined throughout. The inspection results rely entirely on the inspector's experience, making it easy to miss potential risks. Furthermore, if the inspection hole is located directly below the engine, gravity will prevent the probe from working. Moreover, the engine mechanism is very complex, and the inability to confirm the probe's exact position during inspection can easily cause the probe to jam against engine parts, damaging the inspection equipment and the engine. Summary of the Invention

[0004] To address the aforementioned problems, this application provides an auxiliary device for borescope inspection of multiple components after the overall test run of an aero-engine, mainly comprising:

[0005] A positioning chuck is fixed on the borescope mount of the outer casing. The positioning chuck includes a disc with an opening in the middle and a positioning groove marked on the upper surface of the disc.

[0006] A circumferential positioner is rotatably mounted at the middle opening of a positioning chuck. It includes a rotating disk and an axially fixed sleeve located on the rotating disk. The inner wall of the fixed sleeve has a three-stage slide rail extending along the axial direction of the positioning chuck, and the rotating disk has a pointer extending along the radial direction of the positioning chuck.

[0007] The depth gauge includes a multi-stage sliding sleeve. The top of the uppermost sleeve is provided with a detection line positioning sleeve, and the bottommost sleeve is slidably set on a three-stage slide rail. The top end of the detection line guide tube is fixed on the detection line positioning sleeve, and the bottom end passes through the multi-stage sliding sleeve and extends below the lower surface of the positioning chuck. The detection line guide tube is a rigid curved tube, and the bending direction is towards the direction pointed by the pointer.

[0008] When the circumferential positioner is rotated so that the pointer points to or deviates from the positioning groove, the bottom end of the detection line guide tube deflects accordingly at a specified height directly below the positioning groove.

[0009] The detection line extends out of the bottom end of the detection line guide tube after passing through the detection line positioning sleeve and the detection line guide tube.

[0010] Preferably, the bottom end of the disc of the positioning chuck is provided with a plurality of positioning clamping jaws, which are elastic arms for clamping on the hole probe seat of the outer casing.

[0011] Preferably, the rotating handle has a convex disc surface on the rotating disc.

[0012] Preferably, the disc of the positioning chuck is provided with a circumferential annular groove on the sidewall at the middle opening, and the rotating disc of the circumferential positioner has a circular boss extending into the annular groove.

[0013] Preferably, the depth gauge comprises a sleeve structure of a first depth gauge, a second depth gauge and a third depth gauge, the third depth gauge is provided with a third boss at the bottom end for sliding along the third slide, the inner wall of the third depth gauge is provided with a second slide extending in the axial direction of the positioning chuck, the second depth gauge is provided with a second boss at the bottom end for sliding along the second slide, the inner wall of the second depth gauge is provided with a first slide extending in the axial direction of the positioning chuck, the first depth gauge is provided with a first boss at the bottom end for sliding along the first slide, and the top end of the first depth gauge is provided with the detection line positioning sleeve.

[0014] Preferably, the detection line positioning sleeve is a conical sleeve, which is provided with a locking nut outside the sleeve, and the hole diameter of the detection line positioning sleeve is contracted by the locking nut to lock the detection line passing through the through hole of the detection line positioning sleeve.

[0015] Preferably, when the positioning chuck is fixed on the hole probe seat of the outer casing, when the first boss of the first depth gauge slides downward along the first slide, the bottom end of the detection line guide tube is located between the outer casing and the combustion chamber casing, when the first depth gauge is at the lowermost end, the second boss of the second depth gauge is slid downward along the second slide, the bottom end of the detection line guide tube is located between the outer wall of the flame tube and the combustion chamber casing, and when the first depth gauge and the second depth gauge are at the lowermost end, the third boss of the third depth gauge is slid downward along the third slide, and the bottom end of the detection line guide tube is located in the flame tube.

[0016] The application can determine the specific position of the detection probe and control the movement thereof, can realize the inspection of special positions and avoid the detection probe from being stuck during the detection process. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 FIG. 1 is a structural schematic view of a preferred embodiment of the hole probe inspection auxiliary device for multiple components of an aero-engine after whole machine test run.

[0018] Figure 2 FIG. 2 is a structural schematic view of the hole probe inspection auxiliary device for multiple components of an aero-engine after whole machine test run. Figure 1 FIG. 3 is a sectional view as shown in FIG. 2.

[0019] Figure 3 The application is a kind of hole probe inspection auxiliary device for multiple components of an aero-engine after whole machine test run.

[0020] Wherein, 1-positioning chuck, 11-positioning slot, 12-positioning claw, 13-ring groove, 2-circumferential positioner, 21-rotating disc, 22-fixed sleeve, 23-three-stage slide, 24-pointer, 25-rotating handle, 26-circular boss, 3-depth gauge, 31-first-stage depth gauge, 32-second-stage depth gauge, 311-first-stage boss, 321-second-stage boss, 322-first-stage slide, 33-third-stage depth gauge, 331-third-stage boss, 332-second-stage slide, 4-locking nut, 5-detection line positioning sleeve, 6-detection line guide tube, 7-outer casing, 8-flame tube head, 9-combustion chamber casing, 10-flame tube outer wall. DETAILED DESCRIPTION

[0021] To make the purposes, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be described in more detail below with reference to the drawings in the embodiments of the present application. Identical or similar labels in the drawings represent identical or similar elements or elements with identical or similar functions throughout. The described embodiments are some embodiments of the present application, rather than all embodiments of the present application. The embodiments described below with reference to the drawings are exemplary and are intended to explain the present application, and cannot be understood as a limitation on the present application. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present application. The embodiments of the present application will be described in detail below with reference to the drawings.

[0022] The present application provides a kind of hole probe inspection auxiliary device for multiple components of an aero-engine after whole machine test run, as shown in Figures 1-2 Mainly includes:

[0023] Positioning chuck 1 is fixed on the hole probe instrument seat of outer casing 7, and the positioning chuck 1 includes a disc with a middle opening, and the upper surface of the disc is marked with a positioning slot 11;

[0024] Circumferential positioner 2 is rotationally arranged at the middle opening of positioning chuck 1, and it includes a rotating disc 21 and an axial fixed sleeve 22 located on the rotating disc 21, the inner wall of the fixed sleeve 22 has a three-stage slide 23 extending axially along the positioning chuck 1, and the rotating disc 21 has a pointer 24 extending in the radial direction of the positioning chuck 1;

[0025] The depth gauge 3 comprises a multi-stage sliding sleeve, the top of the uppermost stage of the sleeve is provided with a detection line positioning sleeve 5, the lowermost stage of the sleeve is slidingly arranged on a three-stage slide 23, the top end of a detection line guide tube 6 is fixed on the detection line positioning sleeve 5, the bottom end penetrates through the multi-stage sliding sleeve and extends below the lower surface of the positioning chuck 1, the detection line guide tube 6 is a rigid curved tube and the bending direction is towards the direction pointed by the pointer 24;

[0026] When the circumferential positioner 2 is rotated to make the pointer 24 point at or deviate from the positioning groove 11, the bottom end of the detection line guide tube 6 is deflected at a specified height directly below the positioning groove 11;

[0027] After the detection line penetrates through the detection line positioning sleeve 5 and the detection line guide tube 6, the detection line extends out of the bottom end of the detection line guide tube 6.

[0028] The application rotates the rotating disc 21 to rotate the relatively integral detection line guide tube 6, so that the bottom end of the detection line guide tube 6 is deflected to a specified direction in the hole probe hole, and the specific orientation of the bottom end of the detection line guide tube 6 can be determined through the relative position relationship between the positioning groove 11 and the pointer 24. The application moves the top end of the detection line guide tube 6 fixed on the top of the depth gauge 3 up and down through the up-and-down sliding of the depth gauge 3, and then the bottom end of the detection line guide tube 6 is located at different heights to adapt to the engine parts located at different heights.

[0029] Through the above structure, the application solves the problem that the position of the detection probe cannot be determined and the movement mode cannot be controlled during hole probe inspection. During hole probe inspection, the position of the detection line guide tube 6 is determined through the positions of the circumferential positioner 2 and the depth gauge 3, the detection line is fixed in the detection line guide tube 6, and the position of the detection line guide tube 6 is determined to determine the position of the detection probe; the circumferential and depth direction movement of the detection probe is controlled through the circumferential positioner 2 and the depth gauge 3.

[0030] Through the above structure, the application solves the problem that the special position detection hole cannot be used for detection. For example, when the detection hole is located directly below the engine, without the device, the detection line will be bent due to its own gravity after entering the engine during the detection process, which causes the detection probe to be unable to inspect the corresponding parts; after using the device, the detection line guide tube 6 has a certain rigidity and will not be bent due to gravity, and the detection line fixed in the detection line guide tube 6 will not be bent, so the parts can be inspected.

[0031] Through the above structure, the application solves the problem that the probe is easily stuck during hole probe inspection. After using the device, the position of the probe during hole probe inspection can be determined in real time, and the probe can be prevented from being stuck by the engine parts in combination with the engine drawing.

[0032] In some optional embodiments, for example,Figure 3 As shown, the disc bottom end of the positioning chuck 1 is provided with a plurality of positioning clamping jaws 12, which are elastic arms for clamping on the hole probe seat of the outer casing 7.

[0033] In some alternative embodiments, the rotating disc 21 has a convex disc surface rotating handle 25. The rotating disc 21 is driven to rotate by the rotating handle 25.

[0034] In some alternative embodiments, as shown, Figure 2 As shown, the disc of the positioning chuck 1 is provided with a circumferential annular groove 13 on the side wall at the middle opening, and the rotating disc 21 of the circumferential positioner 2 has a circular boss 26 extending into the annular groove 13. The circular boss 26 of the positioner 2 is clamped in the annular groove 13, so that the positioner 2 is rotated relative to the positioning chuck 1. It can be understood that, for the convenience of installation, the positioning chuck 1 can be provided in the form of two half-circular parts. After the circular boss of the positioner is installed, the two half-circular parts are butted to form a complete positioning chuck 1.

[0035] In some alternative embodiments, the depth gauge 3 includes a first-level depth gauge 31, a second-level depth gauge 32 and a third-level depth gauge 33 in a sleeve structure. The third-level depth gauge 33 has a third-level boss 331 at the bottom for sliding along the third-level slide 23, and the inner wall of the third-level depth gauge 33 has a second-level slide 332 extending axially along the positioning chuck 1. The second-level depth gauge 32 has a second-level boss 321 at the bottom for sliding along the second-level slide 332, and the inner wall of the second-level depth gauge 32 has a first-level slide 322 extending axially along the positioning chuck 1. The first-level depth gauge 31 has a first-level boss 311 at the bottom for sliding along the first-level slide 322, and the top of the first-level depth gauge 31 is provided with the detection line positioning sleeve 5.

[0036] In some alternative embodiments, the detection line positioning sleeve 5 is a conical sleeve, and the outer sleeve is provided with a locking nut 4. The hole diameter of the detection line positioning sleeve 5 is contracted by the locking nut to lock the detection line passing through the through hole of the detection line positioning sleeve 5.

[0037] In this embodiment, the rotating handle 25 on the circumferential positioner 2 is rotated to move the pointer 24 from the position pointing to the positioning groove 11 to a specified angular position to the left / right. After the depth positioning and circumferential positioning are completed, the hole probe detection line is inserted into the detection line guide tube 6 from the detection line positioning sleeve 5. After the detection line reaches the specified position, the detection line positioning sleeve 5 is locked by the locking nut 4 to fix the position of the detection line. The position of the detection probe is determined, and the specified part is checked. During the inspection, the depth positioner and the circumferential positioner can be adjusted as needed to control the detection probe to conduct a comprehensive and detailed inspection of the inspected part.

[0038] In some alternative embodiments, when the positioning chuck 1 is fixed on the hole probe seat of the outer casing 7, when the first boss 311 of the first depth gauge 31 slides downward along the first slide 322, the bottom end of the detection line guide tube 6 is located between the outer casing 7 and the combustion chamber casing 9, when the first depth gauge 31 is at the lowermost end, the second boss 321 of the second depth gauge 32 is slid downward along the second slide 332, the bottom end of the detection line guide tube 6 is located between the flame tube outer wall 10 and the combustion chamber casing 9, when the first depth gauge 31 and the second depth gauge 32 are at the lowermost end, the third boss 331 of the third depth gauge 33 is slid downward along the third slide 332, the bottom end of the detection line guide tube 6 is located in the flame tube.

[0039] Although the present application has been described in detail with general description and specific embodiments above, some modifications or improvements can be made on the basis of the present application, which is obvious to those skilled in the art. Therefore, these modifications or improvements made on the basis of not deviating from the spirit of the present application, all belong to the scope of the present application claimed.

Claims

1. An auxiliary device for bore-scope inspection of multiple components after an aeroengine engine run, characterized in that, The utility model relates to a kind of hole depth measuring devices, including: Positioning chuck (1) is fixed on the hole detector seat of outer duct engine case (7), the positioning chuck (1) includes the disc with middle opening, and the upper surface of disc is marked with positioning slot (11); Circumferential positioner (2) is rotationally arranged at the middle opening of positioning chuck (1), and it includes rotating disc (21) and axial fixing sleeve (22) on rotating disc (21), the inner wall of fixing sleeve (22) has three-stage slide (23) extending along the axial direction of positioning chuck (1), and rotating disc (21) has pointer (24) extending along the radial direction of positioning chuck (1) on it; Depth gauge (3) includes multi-stage sliding sleeve, the top of uppermost stage sleeve is provided with detection line positioning sleeve (5), the lowermost stage sleeve is slidingly arranged on three-stage slide (23), the top end of detection line guide tube (6) is fixed on detection line positioning sleeve (5), and the bottom end passes through multi-stage sliding sleeve and extends below the lower surface of positioning chuck (1), the detection line guide tube (6) is rigidly curved pipe, and the bending direction is towards the direction pointed by pointer (24); When rotating circumferential positioner (2) makes pointer (24) point or deviate from positioning slot (11), the bottom end of detection line guide tube (6) is deflected at a specified height directly below positioning slot (11); After detection line passes through detection line positioning sleeve (5) and detection line guide tube (6), it extends out from the bottom end of detection line guide tube (6).

2. The borescope inspection aid for multiple components of an aeroengine after whole engine run-up test of claim 1, wherein, The bottom end of the disc of positioning chuck (1) is provided with a plurality of positioning clamps (12), the positioning clamps (12) are elastic arms for clamping on the hole detector seat of outer duct engine case (7).

3. The borescope inspection aid for multiple components of an aeroengine after whole engine run-up test of claim 1, wherein, Rotating disc (21) has rotating handle (25) with convex disc surface.

4. The borescope inspection aid for multiple components of an aeroengine after whole engine run-up test of claim 1, wherein, The disc of positioning chuck (1) is provided with circumferential annular groove (13) on the side wall at middle opening, and the rotating disc (21) of circumferential positioner (2) has circular boss (26) extending into annular groove (13).

5. The borescope inspection aid for multiple components of an aeroengine after whole engine run-up test of claim 1, wherein, The depth gauge (3) includes sleeve structure of first depth gauge (31), second depth gauge (32) and third depth gauge (33), the bottom of third depth gauge (33) has third boss (331) sliding along three-stage slide (23), the inner wall of third depth gauge (33) has second slide (332) extending along the axial direction of positioning chuck (1), the bottom of second depth gauge (32) has second boss (321) sliding along second slide (332), the inner wall of second depth gauge (32) has first slide (322) extending along the axial direction of positioning chuck (1), the bottom of first depth gauge (31) has first boss (311) sliding along first slide (322), and the top of first depth gauge (31) is provided with detection line positioning sleeve (5).

6. The borescope inspection accessory for multiple components after engine run-up testing of claim 5, wherein, The detection line positioning sleeve (5) is conical sleeve, locking nut (4) is arranged on the outer sleeve of detection line positioning sleeve (5), the hole diameter of detection line positioning sleeve (5) is contracted by locking nut, so as to lock the detection line passing through the through hole of detection line positioning sleeve (5).

7. The borescope inspection aid for multiple components of an aeroengine after whole engine run-up test of claim 5, wherein, When the positioning chuck (1) is fixed on the hole detector seat of the outer canister (7), when the first boss (311) of the first depth gauge (31) slides downward along the first slide (322), the bottom end of the detection line guide tube (6) is located between the outer canister (7) and the combustion chamber canister (9), when the first depth gauge (31) is at the lowermost end, the second boss (321) of the second depth gauge (32) is slid downward along the second slide (332), the bottom end of the detection line guide tube (6) is located between the flame tube outer wall (10) and the combustion chamber canister (9), when the first depth gauge (31) and the second depth gauge (32) are at the lowermost end, the third boss (331) of the third depth gauge (33) is slid downward along the third slide (23), and the bottom end of the detection line guide tube (6) is located in the flame tube.

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