High-efficiency radiographic inspection arrangement device and method for small-diameter bent pipe of aero-engine

Abstract

The invention relates to the field of industrial radiographic inspection, in particular to a high-efficiency radiographic inspection arrangement device and method for a small-diameter elbow of an aero-engine. Comprising a workbench, an arc-shaped cushion block is arranged on the workbench, elastic connecting belts are arranged on the two sides of the upper portion of the arc-shaped cushion block, a plurality of clamping assemblies are arranged on the arc-shaped cushion block, each clamping assembly comprises two movable clamping plates, and the movable clamping plates are detachably connected with the connecting belts through the connecting assemblies. The corresponding arc-shaped cushion blocks are selected according to the specifications of the small-diameter elbows, so that the distances from the small-diameter elbows to the radiation source are kept basically consistent, the stability of the small-diameter elbow detection process is improved, and the quality of negative images is ensured to be qualified during batch detection of the small-diameter elbows.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of industrial radiographic inspection, in particular to an aircraft engine small-diameter elbow high-efficiency radiographic inspection arrangement device and method. BACKGROUND

[0002] Small-diameter elbows are widely used in aircraft engines, with different materials, angles, and diameters, and most of them have two butt welds.

[0003] For related technologies, refer to Chinese Patent No. CN222979489U, which discloses a kind of for elbow weld X-ray detection device, including device body, fixedly connected with fixed frame in device body middle part, detection mechanism is arranged in the lower part of fixed frame middle part, adjustment mechanism is arranged in the inside of device body, one fixed mechanism is arranged at the both ends of adjustment mechanism, adjustment mechanism includes rotating motor, threaded rod, slide bar, fixed rod and first electric push rod.

[0004] For related technologies in the above, the current main method is industrial X-ray film detection, and the previous manual arrangement method is used for workpiece arrangement in the detection chamber, which is placed in turn on the same horizontal plane for detection. The stability of the detection result mainly depends on the work experience of the arrangement personnel. When a large number of workpieces are detected, it is easy to cause some film image quality to be unqualified (uneven distribution, unqualified blackness, overlapping of weld images caused by unreasonable placement, blurred film display, etc.), which needs to be reworked and rephotographed, resulting in low efficiency and affecting the detection progress. SUMMARY

[0005] In order to improve the stability of the small-diameter elbow detection process and improve the efficiency, the present application provides an aircraft engine small-diameter elbow high-efficiency radiographic inspection arrangement device and method.

[0006] In the first aspect, the present application provides an aircraft engine small-diameter elbow high-efficiency radiographic inspection arrangement device, which adopts the following technical solution: An aircraft engine small-diameter elbow high-efficiency radiographic inspection arrangement device, comprising a workbench, an arc-shaped pad is arranged on the workbench, two elastic connecting bands are arranged on the upper sides of the arc-shaped pad, a plurality of groups of clamping assemblies are arranged on the arc-shaped pad, each clamping assembly comprises two movable clamping plates, and the movable clamping plates are detachably connected with the connecting bands through connecting assemblies.

[0007] Optionally, a limiting rod is arranged between the two ends of each connecting band, and two limiters matched with the limiting rods are arranged on the workbench.

[0008] Optionally, a moving guide rail is arranged on the workbench along the length direction of the arc-shaped pad, and a guide block matched with the moving guide rail is arranged at the bottom of the limiter.

[0009] Optionally, the arc-shaped pad bottom is provided with an insertion block, and the workbench is provided with an insertion slot matched with the insertion block.

[0010] Optionally, the connecting assembly comprises a first connecting rod, a second connecting rod, a third connecting rod, a first limiting rod, a second limiting rod and a third limiting rod, two ends of the second connecting rod are fixedly connected with the first connecting rod and the third connecting rod, one end of the first connecting rod away from the second connecting rod is fixedly connected with the end of the movable clamping plate, two ends of the second limiting rod are fixedly connected with the first limiting rod and the third limiting rod, the first connecting rod, the third connecting rod, the first limiting rod and the third limiting rod are parallel, and the second connecting rod and the second limiting rod are rotationally connected through a rotating rod.

[0011] Optionally, a limiting block is arranged between the third connecting rod and the third limiting rod.

[0012] In a second aspect, the application provides a high-efficiency ray detection arrangement method for a small-diameter elbow of an aero-engine, which uses the high-efficiency ray detection arrangement device for the small-diameter elbow of the aero-engine, and comprises the following steps: S1, obtaining the diameter and the weld width of the small-diameter elbow; S2, calculating the distance of the ray source from the center of the weld according to the diameter and the weld width of the small-diameter elbow; S3, selecting a corresponding arc-shaped pad according to the distance of the ray source from the center of the weld; S4, placing the arc-shaped pad on the workbench, laying a film bag on the arc-shaped pad, and fixing the small-diameter elbow through the clamping assembly; S5, performing X-ray detection on the small-diameter elbow.

[0013] Optionally, in step S2, The distance W of the ray source from the center of the weld is: ; Wherein f is the vertical distance of the ray source from the surface of the weld, b is the weld width, and D is the diameter of the workpiece.

[0014] In summary, the application has at least one of the following beneficial technical effects: 1. According to the specification of the small-diameter elbow, a corresponding arc-shaped pad is selected, so that the distance of each small-diameter elbow from the ray source remains substantially the same, the stability of the small-diameter elbow detection process is improved, and the quality of the film image is ensured to be qualified during batch detection of the small-diameter elbow; 2. The small-diameter elbow is fixed through the movable clamping plate, the stability of the small-diameter elbow detection process is improved, the position of the movable clamping plate is adjusted according to the specification of the small-diameter elbow through the detachable connection between the movable clamping plate and the connecting belt, and different specifications of the small-diameter elbow can be stably detected.BRIEF DESCRIPTION OF DRAWINGS BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 is a schematic diagram of the overall structure of an aero-engine small-diameter elbow high-efficiency ray detection arrangement device; Figure 2 is a schematic diagram of the connection relationship between the workbench and the arc-shaped pad; Figure 3 is Figure 1 is an enlarged schematic diagram of part A in

[0016] BRIEF DESCRIPTION OF DRAWINGS: 1, workbench; 11, slot; 2, arc-shaped pad; 21, plug; 3, connecting belt; 4, movable clamping plate; 5, connecting assembly; 51, first connecting rod; 52, second connecting rod; 53, third connecting rod; 54, first limiting rod; 55, second limiting rod; 56, third limiting rod; 57, rotating rod; 6, limiting block; 7, limiter; 71, guide block; 8, moving guide rail. DETAILED DESCRIPTION

[0017] The application will be further described in detail below in combination with all the drawings.

[0018] Example 1: The embodiments of the application disclose an aero-engine small-diameter elbow high-efficiency ray detection arrangement device.

[0019] Referring to Figure 1 and Figure 2 , the aero-engine small-diameter elbow high-efficiency ray detection arrangement device comprises a workbench 1, the workbench 1 is provided with an arc-shaped pad 2, the arc-shaped pad 2 is provided with a plug 21 at the bottom, and the workbench 1 is provided with a slot 11 matched with the plug 21. According to the specification of the small-diameter elbow, a corresponding arc-shaped pad 2 is selected, the plug 21 at the bottom of the corresponding arc-shaped pad 2 is inserted into the slot 11 of the workbench 1, and the arc-shaped pad 2 is placed on the workbench 1 and fixed.

[0020] Referring to Figure 1 and Figure 3 , the arc-shaped pad 2 is provided with a connecting belt 3 with elasticity on both sides above the arc-shaped pad 2, and the arc-shaped pad 2 is provided with a plurality of clamping assemblies, the clamping assembly comprises two movable clamping plates 4, and the movable clamping plates 4 are detachably connected with the connecting belt 3 through a connecting assembly 5. The small-diameter elbow is fixed through the movable clamping plates 4, so that the stability of the small-diameter elbow detection process is improved, and the position of the movable clamping plates 4 is adjusted according to the specification of the small-diameter elbow through the detachable connection of the movable clamping plates 4 and the connecting belt 3, so that the small-diameter elbow of different specifications can be stably detected.

[0021] The connecting band 3 is made of non-metal flexible material, which reduces the influence on the detection of the metal material of the small-diameter elbow pipe. The movable clamping plate 4 is a plastic plate with a height of 10 mm, which plays a clamping role and at the same time reduces the shielding of the movable clamping plate 4 to the weld of the small-diameter elbow pipe, guarantees the best detection effect, shortens the preparation time, and improves the detection efficiency.

[0022] With reference to Figure 3 The connecting assembly 5 includes a first connecting rod 51, a second connecting rod 52, a third connecting rod 53, a first limiting rod 54, a second limiting rod 55, and a third limiting rod 56. The second connecting rod 52 is fixedly connected to the first connecting rod 51 and the third connecting rod 53 at both ends. The first connecting rod 51 is fixedly connected to the end of the movable clamping plate 4 away from the second connecting rod 52. The second limiting rod 55 is fixedly connected to the first limiting rod 54 and the third limiting rod 56 at both ends. The first connecting rod 51, the third connecting rod 53, the first limiting rod 54, and the third limiting rod 56 are parallel. The second connecting rod 52 and the second limiting rod 55 are rotationally connected through a rotating rod 57. When it is necessary to connect the connecting band 3 to the movable clamping plate 4 or to move the movable clamping plate 4 along the connecting plate, the second limiting rod 55 is relatively rotated with the second connecting rod 52 through the rotating rod 57, the first connecting rod 51 and the first limiting rod 54 are moved away from each other, the connecting band 3 is placed between the first connecting rod 51 and the first limiting rod 54, the position of the movable clamping plate 4 is adjusted, then the second limiting rod 55 is relatively rotated with the second connecting rod 52 through the rotating rod 57, the first connecting rod 51 and the first limiting rod 54 are moved close to each other, the connecting band 3 is clamped and fixed, and the relative fixation of the movable clamping plate 4 and the connecting band 3 is realized.

[0023] A limiting block 6 is arranged between the third connecting rod 53 and the third limiting rod 56. After the clamping and fixation of the connecting band 3 by the first connecting rod 51 and the first limiting rod 54 are completed, the limiting block 6 is placed between the third connecting band 3 and the third limiting rod 56, which prevents the relative rotation of the second limiting rod 55 and the second connecting rod 52, and improves the stability of the clamping and fixation of the connecting band 3 by the first connecting rod 51 and the first limiting rod 54. When it is necessary to separate the connecting band 3 from the movable clamping plate 4, the limiting block 6 is removed from the third connecting rod 53 and the third limiting rod 56.

[0024] With reference to Figure 1 and Figure 2Limiting rods are installed between both ends of the two connecting belts 3. Two limiters 7, which cooperate with the limiting rods, are installed on the worktable 1. A movable guide rail 8 is installed on the worktable 1 along the length of the arc-shaped pad 2. A guide block 71, which cooperates with the movable guide rail 8, is installed at the bottom of the limiter 7. The two limiting rods limit the position of the limiting rods, thereby limiting the overall position of the connecting belt 3 and the position of the movable clamping plate 4 connected to the connecting belt 3. By moving the limiter 7 along the movable guide rail 8 via the guide block 71, the position of the limiter 7 is adjusted, thereby adjusting the position of the connecting belt 3 and the movable clamping plate 4, and thus adjusting the position of the clamped and fixed small-diameter curved pipe, improving the detection effect.

[0025] The implementation principle of the high-efficiency X-ray inspection arrangement device for small-diameter bends of aero-engines in this embodiment is as follows: Select the corresponding arc-shaped pad 2 according to the specifications of the small-diameter bend, place the arc-shaped pad 2 on the workbench 1 and fix it, and fix the small-diameter bends by the movable clamp 4 so that the distance between each small-diameter bend and the X-ray source is basically consistent, thereby improving the stability of the small-diameter bend inspection process and ensuring that the film image quality is qualified when the small-diameter bends are inspected in batches.

[0026] Example 2: This application discloses a high-efficiency X-ray inspection arrangement method for small-diameter bends in aero-engines, using the aforementioned high-efficiency X-ray inspection arrangement device for small-diameter bends in aero-engines, including the following steps: S1. Obtain the diameter and weld width of the small-diameter bend; S2. Calculate the distance of the X-ray source offset from the weld center based on the diameter of the small-diameter bend and the weld width. S3. Select the corresponding arc-shaped pad 2 according to the distance of the X-ray source offset from the weld center; S4. Place the arc-shaped pad 2 on the workbench 1, lay a plastic-coated dark bag on the arc-shaped pad 2, and fix the small-diameter bent pipe through the clamping assembly. S5. Perform X-ray inspection on small-diameter bends.

[0027] In step S2, The distance W from which the X-ray source is offset from the weld center is: ; Where f is the vertical distance between the X-ray source and the weld surface, b is the weld width, and D is the workpiece diameter.

[0028] Take the workpiece diameter D=52mm as an example, generally set the height of the radiation source is 2000mm, weld width b=4mm, so the vertical distance f=1948mm between the radiation source and the weld surface, according to the formula, so the weld offset distance from the radiation source is about 300mm. Can be obtained offset 300mm and the straight line distance from the radiation source is 2022mm, therefore, to make the radiation source as the center, radius 2022mm, tangent arc length is 350mm, width is 450mm at 300mm arc-shaped pad 2, so that you can put the maximum size of 350mm×430mm film. Offset distance 150mm-500mm, spacing 50mm, sequentially making each type of arc-shaped pad 2 for standby.

[0029] The above are the preferred embodiments of the present application, not limited by the protection scope of the present application, therefore: all equivalent changes made according to the structure, shape, principle of the present application should be covered within the protection scope of the present application.

Claims

1. A high-efficiency X-ray inspection arrangement device for small-diameter bent pipes of aero-engines, characterized in that, Includes a workbench (1), on which an arc-shaped pad (2) is provided, and on both sides above the arc-shaped pad (2) are elastic connecting straps (3). Several sets of clamping components are provided on the arc-shaped pad (2), and the clamping components include two movable clamping plates (4). The movable clamping plates (4) are detachably connected to the connecting straps (3) through connecting components (5).

2. The high-efficiency X-ray inspection arrangement device for small-diameter bent pipes of aero-engines according to claim 1, characterized in that, Limiting rods are provided between the two ends of the two connecting strips (3), and two limiters (7) that cooperate with the limiting rods are provided on the worktable (1).

3. The high-efficiency X-ray inspection arrangement device for small-diameter bent pipes of aero-engines according to claim 2, characterized in that, The workbench (1) is provided with a moving guide rail (8) along the length of the arc-shaped pad (2), and the bottom of the limiter (7) is provided with a guide block (71) that cooperates with the moving guide rail (8).

4. The high-efficiency X-ray inspection arrangement device for small-diameter bent pipes of aero-engines according to claim 1, characterized in that, The bottom of the arc-shaped pad (2) is provided with a plug (21), and the workbench (1) is provided with a slot (11) that cooperates with the plug (21).

5. The high-efficiency X-ray inspection arrangement device for small-diameter bent pipes of aero-engines according to claim 1, characterized in that, The connecting assembly (5) includes a first connecting rod (51), a second connecting rod (52), a third connecting rod (53), a first limiting rod (54), a second limiting rod (55), and a third limiting rod (56). The two ends of the second connecting rod (52) are fixedly connected to the ends of the first connecting rod (51) and the third connecting rod (53). The end of the first connecting rod (51) away from the second connecting rod (52) is fixedly connected to the end of the movable clamp (4). The two ends of the second limiting rod (55) are fixedly connected to the ends of the first limiting rod (54) and the third limiting rod (56). The first connecting rod (51), the third connecting rod (53), the first limiting rod (54), and the third limiting rod (56) are parallel to each other. The second connecting rod (52) and the second limiting rod (55) are rotatably connected by a rotating rod (57).

6. The high-efficiency X-ray inspection arrangement device for small-diameter bent pipes of aero-engines according to claim 5, characterized in that, A limit block (6) is provided between the third connecting rod (53) and the third limiting rod (56).

7. A method for arranging high-efficiency X-ray inspection of small-diameter bends in aero-engines, using the high-efficiency X-ray inspection arrangement device for small-diameter bends in aero-engines as described in any one of claims 1-6, characterized in that... Includes the following steps: S1. Obtain the diameter and weld width of the small-diameter bend; S2. Calculate the distance of the X-ray source offset from the weld center based on the diameter of the small-diameter bend and the weld width. S3. Select the corresponding arc-shaped pad (2) according to the distance of the X-ray source offset from the weld center. S4. Place the arc-shaped pad (2) on the workbench (1), lay the film bag on the arc-shaped pad (2), and fix the small-diameter bent pipe through the clamping assembly; S5. Perform X-ray inspection on small-diameter bends.

8. The high-efficiency X-ray inspection arrangement method for small-diameter bends in aero-engines according to claim 7, characterized in that, In step S2, The distance W from which the X-ray source is offset from the weld center is: ； Where f is the vertical distance between the X-ray source and the weld surface, b is the weld width, and D is the workpiece diameter.

Images