Sleeve fixing structure for ray detection

Abstract

The utility model relates to the technical field of casing pipe flaw detection, and discloses a casing pipe fixing structure for radiographic inspection, which comprises a hollow chuck, a base, a support column and a light source, the chuck is arranged at the top of the support column, the chuck is connected with the base through the support column, so that the chuck can be supported on the base through the support column, and the light source is arranged at the center of the chuck. A plurality of clamping grooves are formed in the side edge of the chuck at equal intervals, the chuck comprises an upper chuck body and a lower chuck body which are rotationally connected, the upper chuck body rotates in the set direction relative to the lower chuck body so that a plurality of sleeves can be clamped in the clamping grooves in a one-to-one correspondence mode, and the technical problems that in the prior art, during ray detection, the process is tedious, and the sleeves are prone to toppling over are solved.

Description

Technical Field

[0001] This utility model relates to the field of casing flaw detection technology, specifically a fixed structure for radiographic testing of casing defects. Background Technology

[0002] In the existing technology, when inspecting the circumferential weld of a sleeve, multiple sleeves are usually arranged in a ring, a line is drawn at the center of the ring, and the truss of the X-ray source is operated to move the source to the drawn line. After one exposure, the unexposed part of the sleeve is manually rotated and adjusted to face the source, and then exposed again. The above adjustment steps are repeated to expose the circumferential weld on the sleeve multiple times, and finally the X-ray inspection process of the sleeve is completed.

[0003] In the radiographic testing process described above, after one exposure, it is necessary to manually rotate the unexposed surface of the annular weld on the sleeve to face the light source. This process is cumbersome and inefficient, and the sleeve is placed vertically during the inspection, which makes it prone to tipping over and rolling, posing certain safety hazards. In addition, the position of the light source in the above-mentioned prior art is controlled by a truss, which makes it difficult to align with the center of the sleeve, thus affecting the radiographic inspection results. Utility Model Content

[0004] To address the technical problems of cumbersome procedures and easy tipping of sleeves when inspecting the circumferential weld of sleeves in existing technologies, this utility model proposes a sleeve fixing structure for radiographic testing.

[0005] A sleeve fixing structure for X-ray inspection includes a base, at least two support columns, and a light source. It also includes a hollow chuck connected to the base by the support columns, allowing the chuck to be supported on the base by the support columns. The light source is located at the center of the chuck. The chuck has a plurality of slots evenly spaced along its edge. The chuck includes an upper chuck and a lower chuck that are rotatably connected. The lower chuck is connected to one end of a support column. A slot is formed by an upper slot on the upper chuck and a lower slot on the lower chuck. When the upper chuck rotates relative to the lower chuck, an adjustable sleeve fixing structure is formed between the upper slot and the corresponding lower slot.

[0006] The aforementioned sleeve fixing structure for X-ray inspection has a first V-groove on one side of the upper slot and a second V-groove on one side of the lower slot, with the first V-groove and the second V-groove in the same slot located on opposite sides of the slot.

[0007] The aforementioned sleeve fixing structure for X-ray inspection has a fan-shaped annular hole on the upper chuck and a threaded hole on the lower chuck. A limiting bolt is fitted into the threaded hole. When the upper and lower chucks rotate relative to each other, the threaded hole can rotate to both ends of the annular hole.

[0008] The aforementioned sleeve fixing structure for X-ray inspection has sleeve rotating seats on the base that are the same number and position as the slots.

[0009] The aforementioned sleeve fixing structure for X-ray inspection has a first boss at the center of the upper chuck and a circular hole at the center of the lower chuck that matches the shape of the first boss.

[0010] The aforementioned sleeve fixing structure for X-ray inspection has a second protrusion on the upper chuck ground, which surrounds the first protrusion.

[0011] The aforementioned sleeve fixing structure for X-ray inspection also includes a chuck block. The chuck block passes through the circular hole that matches the shape of the first boss and is fixedly connected to the upper chuck, thus confining the lower chuck between the chuck block and the upper chuck.

[0012] The aforementioned sleeve fixing structure for X-ray inspection has an annular groove on the top surface of the lower chuck, and a plurality of spheres are arranged inside the annular groove, with the diameter of the spheres being higher than the height of the annular groove.

[0013] The aforementioned sleeve fixing structure for X-ray inspection also includes a plurality of caster assemblies, which are evenly installed on the base and connected to the base via a linkage mechanism.

[0014] The aforementioned sleeve fixing structure for X-ray inspection connects the light source and the upper chuck via a light source fixing assembly. The light source fixing assembly includes at least three fixing rods and a hollow fixing cylinder. A connecting rod on the light source can penetrate into the hollow part of the fixing cylinder. The fixing cylinder is fixed to the center of the upper chuck by the fixing rods. The fixing cylinder has a plurality of fixing holes, and the connecting rod is fixed by a tightening bolt that mates with the fixing holes.

[0015] The beneficial effects of this utility model include: by setting an upper chuck and a lower chuck respectively, and setting the same number of corresponding slots on the upper and lower chucks, the sleeve can be fixed by rotating the upper chuck relative to the lower chuck. This provides a convenient and reliable sleeve fixing structure, which solves the technical problems of cumbersome process and easy tilting of sleeve during X-ray inspection in the prior art. Attached Figure Description

[0016] Figure 1 This is a top view of one embodiment of the sleeve fixing structure for X-ray inspection according to this utility model.

[0017] Figure 2 This is a front sectional view of one embodiment of the sleeve fixing structure for X-ray inspection according to this utility model.

[0018] Figure 3 This is a top view of the upper chuck of one embodiment of the sleeve fixing structure for X-ray inspection according to this utility model.

[0019] Figure 4 This is a top view of the lower chuck of one embodiment of the sleeve fixing structure for X-ray inspection according to this utility model.

[0020] Figure 5 This is a schematic diagram showing the state of the chuck fixing the sleeve in one embodiment of the sleeve fixing structure for X-ray detection according to this utility model.

[0021] Figure 6 This is a schematic diagram showing the state of the sleeve being removed from the chuck in one embodiment of the sleeve fixing structure for X-ray detection according to this utility model.

[0022] Figure 7 This is a schematic diagram of the base structure of one embodiment of the sleeve fixing structure for X-ray detection of this utility model.

[0023] Figure 8 This is a schematic diagram showing the connection relationship between the upper and lower chucks in one embodiment of the sleeve fixing structure for X-ray inspection according to this utility model.

[0024] Figure 9 This is a schematic diagram of the caster assembly in the lowered state of one embodiment of the sleeve fixing structure for X-ray inspection according to this utility model.

[0025] Figure 10 This is a schematic diagram of the caster assembly in the lifted state of one embodiment of the sleeve fixing structure for X-ray inspection according to this utility model.

[0026] The markings in the diagram are as follows: 1-Chuck, 11-Upper chuck, 111-Oval hole, 112-First boss, 113-Second boss, 12-Lower chuck, 121-Threaded hole, 13-Clocking block, 2-Base, 3-Support column, 4-Light source, 5-Clocking slot, 51-Upper locking slot, 52-Lower locking slot, 53-First V-groove, 54-Second V-groove, 6-Sleeve rotating seat, 7-Cast assembly, 71-Linkage mechanism, 8-Light source fixing assembly, 81-Fixing rod, 82-Fixing cylinder. Detailed Implementation

[0027] The present invention will now be described in conjunction with the accompanying drawings.

[0028] like Figures 1-6The diagram shows the sleeve fixing structure for X-ray inspection according to this invention, including a base 2, at least two support columns 3, and a light source 4. It also includes a hollow chuck 1, which is connected to the base 2 by the support columns 3, so that the chuck 1 can be supported on the base 2 by the support columns 3. The light source 4 is located at the center of the chuck 1. The edge of the chuck 1 is provided with a plurality of slots 5 at equal intervals. The chuck 1 includes an upper chuck 11 and a lower chuck 12 that are rotatably connected. The lower chuck 12 is connected to one end of the support column 3. A slot 5 is composed of an upper slot 51 provided on the upper chuck 11 and a lower slot provided on the lower chuck 12. When the upper chuck 11 rotates relative to the lower chuck 12, an adjustable sleeve fixing structure is formed between the upper slot 51 and the lower slot 52. The above structure can be used to fix the sleeve in a relatively simple way, ensuring that it will not tip over during X-ray inspection.

[0029] Furthermore, a first V-groove 53 is provided on one side of the upper slot 51, and a second V-groove 54 is provided on one side of the lower slot 52. The first V-groove 53 and the second V-groove 54 in the same slot 5 are located on both sides of the slot 5. When the sleeve is fixed in the slot 5, the two sides of the sleeve are clamped by the first V-groove 53 and the second V-groove 54 respectively, thereby preventing the sleeve from slipping out of the slot 5 during the fixing process.

[0030] Furthermore, the upper chuck 11 is provided with a fan-shaped annular waist-shaped hole 111, and the lower chuck 12 is provided with a threaded hole 121. A limiting bolt is fitted in the threaded hole 121. When the upper chuck 11 and the lower chuck 12 rotate relative to each other, the threaded hole 121 can rotate to both ends of the waist-shaped hole 111. Through the waist-shaped hole 111 and the limiting bolt, the range of the relative rotation angle between the upper chuck 11 and the lower chuck 12 can be controlled. When the limiting bolt is tightened, the width of the chuck groove 5 is locked.

[0031] Furthermore, such as Figure 7As shown, the base 2 is provided with sleeve rotating seats 6, which are the same number and position as the slots 5. The sleeve rotating seats 6 are manually rotatable support seats. In this embodiment, the sleeve rotating seats 6 include a circular support surface, a support rod, a first bearing mechanism, and a second bearing mechanism. The bottom of the support rod is connected to the base 2 through the second bearing mechanism, and the top of the support rod is connected to the center of the bottom surface of the support surface. The first bearing mechanism is located between the bottom of the support surface and the reserved installation position on the base 2, so that the support surface can rotate on the base 2. This allows the sleeve placed on the sleeve rotating seat 6 to rotate with the sleeve rotating seat 6. The base 2 is provided with an angle scale of 0 to 360° around the edge of the sleeve rotating seat 6. After completing one round of X-ray inspection of the sleeve, the sleeve rotating seat 6 is rotated by a certain angle according to the scale, which drives the sleeve to rotate and rotates the annular weld to align with the light source. Repeating the above inspection and direction adjustment process can complete the flaw detection of the sleeve without removing the sleeve, which greatly simplifies the process of sleeve X-ray inspection.

[0032] Furthermore, such as Figure 8 As shown, the upper chuck 11 has a first protrusion 112 at its center, and the lower chuck 12 has a circular hole at its center that matches the shape of the first protrusion 112. During installation, the first protrusion 112 is placed in the circular hole at the center of the lower chuck 12 so that the upper chuck 11 and the lower chuck 12 will not shift when they rotate relative to each other.

[0033] Furthermore, the bottom surface of the upper chuck 11 is provided with a second protrusion 113, which surrounds the first protrusion 112. When the upper chuck 11 and the lower chuck 12 rotate relative to each other, the upper chuck 11 rubs against the lower chuck 12 through the second protrusion 113, thereby reducing the friction by reducing the contact area.

[0034] Furthermore, an annular groove 121 is provided on the top surface of the lower chuck 12, and a plurality of movable spheres are evenly placed in the annular groove 121, and the diameter of the spheres is higher than the height of the annular groove 121, so that the friction between the upper chuck 11 and the lower chuck 12 is changed from sliding friction to rolling friction, thereby reducing the wear on the parts.

[0035] Furthermore, the chuck 1 also includes a locking block 13, which passes through the circular hole that matches the shape of the first boss 112 and is fixedly connected to the upper chuck 11, thus confining the lower chuck 12 between the locking block 13 and the upper chuck 11. In this embodiment, both the first boss 112 and the locking block 13 are provided with threaded holes with the same internal threads. By connecting and fixing the locking block 13 to the first boss 112 with corresponding bolts, the upper chuck 11 is constrained on the lower chuck 12, thereby making the rotation of the upper chuck 11 relative to the lower chuck 12 more stable and the positioning of the upper chuck 11 more reliable.

[0036] Furthermore, such as Figures 9-10 As shown, it also includes a plurality of caster assemblies 7, which are evenly mounted on the base 2. The caster assemblies 7 are connected to the base 2 via a linkage mechanism 71. In this embodiment, the locking mechanism 71 adopts the following... Figures 9-10 The three-bar linkage shown can be moved as follows: Figure 9 As shown, the linkage mechanism 71 is unfolded. When it is necessary to fix the device in place, it can be done as follows: Figure 10 The linkage mechanism 71 is retracted as shown, making it easier to move the device.

[0037] Furthermore, the light source 4 is connected to the upper chuck 11 via a light source fixing assembly 8. The light source fixing assembly 8 includes at least three fixing rods 81 and a hollow fixing cylinder 82. The light source 4 has a connecting rod that can extend into the hollow part of the fixing cylinder 82. The fixing cylinder 82 is fixed to the center of the upper chuck 11 by the fixing rods 81. The fixing cylinder 82 has a plurality of fixing holes. The vertical position of the light source 4 can be adjusted and fixed by bolts corresponding to the fixing holes, so that the light source 4 can be aimed at the annular weld seam to be inspected on the sleeve.

[0038] In use, the present invention described in the above embodiment is first aligned with the upper and lower slots 52 on the upper chuck 11 and lower chuck 12, respectively, and then with the sleeve rotating seat 6 on the base 2. Next, the sleeves to be tested are placed into the slots 5 one by one, and the bottom of the sleeves is fixed to the sleeve rotating seat 6. Then, the upper chuck 11 and lower chuck 12 are rotated in opposite directions, so that the sleeves are clamped by the first V-groove 53 and the second V-groove 54 on both sides. The bolts corresponding to the threaded holes 121 are then passed through the oblong holes 111 and screwed into the threaded holes 121, thereby aligning the upper chuck 11 and lower chuck 12. The relative positions are fixed to complete the fixation of the sleeve. Then, the light source 4 is fixed in the fixed cylinder 82 in the center of the upper chuck 11. After the sleeve and the light source 4 are fixed, the flaw detection irradiation can begin. After the inspection of one section of the annular weld on all sleeves is completed, the limiting bolt that mates with the threaded hole 121 on the lower chuck 12 is loosened first, the upper chuck 11 is rotated in the opposite direction, and then the sleeve rotating seat 6 is controlled to rotate a certain angle to align the uninspected section of the annular weld on the sleeve with the light source. Then the limiting bolt is locked, and the inspection of the next section of the annular weld is carried out... In this way, until all the annular welds are inspected.

[0039] During the above-mentioned process of fixing the sleeve, the gap between the first V-groove 53 and the second V-groove 54 is limited to prevent the sleeve from sliding out of the slot 5 while allowing it to be driven to rotate by the sleeve rotating seat 6.

[0040] Compared with the prior art, the sleeve fixing structure for X-ray inspection provided by this utility model can easily fix multiple sleeves at the same time through an upper chuck and a lower chuck with multiple slots. At the same time, a sleeve rotating seat is provided on the base, which can control the sleeve to rotate in the slots without manual operation after each X-ray irradiation, so that the unirradiated side of the sleeve can continue to be inspected. This solves the technical problems of cumbersome process and easy tipping of sleeves in the prior art during X-ray inspection.

Claims

1. A casing fixing structure for radiographic detection, comprising a base (2), at least two support columns (3) and a light source (4), characterized in that: Also include hollow chuck (1), the chuck (1) is connected between the base (2) by the support column (3), so that the chuck (1) can be supported by the support column (3) on the base (2), the light source (4) is arranged in the center of the chuck (1), the edge of the chuck (1) is equidistantly provided with a plurality of clamping grooves (5), the chuck (1) comprises a rotatingly connected upper chuck (11) and lower chuck (12), the lower chuck (12) is connected with one end of the support column (3), one of the clamping grooves (5) is composed of an upper clamping groove (51) arranged on the upper chuck (11) and a lower clamping groove (52) arranged on the lower chuck (12), when the upper chuck (11) rotates relative to the lower chuck (12), the upper clamping groove (51) and the corresponding lower clamping groove (52) form an adjustable sleeve fixing structure.

2. The sleeve fixing structure for radiographic detection according to claim 1, characterized by: The upper clamping groove (51) is provided with a first V-shaped groove (53) on one side, the lower clamping groove (52) is provided with a second V-shaped groove (54) on one side, and the first V-shaped groove (53) and the second V-shaped groove (54) in the same clamping groove (5) are respectively located on both sides of the clamping groove (5).

3. The sleeve fixing structure for radiographic detection according to claim 1, characterized by: The upper chuck (11) is provided with a fan-shaped waist-shaped hole (111), the lower chuck (12) is provided with a threaded hole (121), and a limiting bolt is matched in the threaded hole (121), when the upper chuck (11) rotates relative to the lower chuck (12), the threaded hole (121) can rotate to the two ends of the waist-shaped hole (111) at most.

4. The sleeve fixing structure for radiographic detection according to claim 1, characterized by: The base (2) is provided with a sleeve rotating seat (6) corresponding in position and same in number with the clamping grooves (5).

5. The sleeve fixing structure for radiographic detection according to claim 1, characterized by: The upper chuck (11) is provided with a first boss (112) in the center, and the lower chuck (12) is provided with a circular hole matched with the shape of the first boss (112).

6. The sleeve fixing structure for radiographic detection according to claim 5, characterized by: The bottom surface of the upper chuck (11) is provided with a second boss (113), and the second boss (113) is arranged around the first boss (112).

7. The sleeve fixing structure for radiographic detection according to claim 5, characterized by: The chuck (1) further comprises a clamping block (13), the clamping block (13) is fixedly connected with the upper chuck (11) through the circular hole matched with the shape of the first boss (112), and the lower chuck (12) is limited between the clamping block (13) and the upper chuck (11).

8. The sleeve fixing structure for radiographic detection according to claim 1, characterized by: An annular groove (121) is arranged on the top surface of the lower chuck (12), and a plurality of movable balls are uniformly placed in the annular groove (121), and the diameter of the ball is higher than the height of the annular groove (121).

9. The sleeve fixing structure for radiographic detection according to claim 1, characterized by: A plurality of caster assemblies (7) are also included, the caster assemblies (7) are uniformly mounted on the base (2), and the caster assemblies (7) are connected with the base (2) through a connecting rod mechanism (71).

10. The sleeve fixing structure for radiographic detection according to claim 1, characterized by: The light source (4) is connected with the upper chuck (11) through a light source fixing assembly (8), the light source fixing assembly (8) comprises at least three fixing rods (81) and a hollow fixing cylinder (82), the light source (4) has a connecting rod which can extend into the hollow part of the fixing cylinder (82), the fixing cylinder (82) is fixed on the center of the upper chuck (11) by the fixing rods (81), and a plurality of fixing holes are formed in the fixing cylinder (82), and the connecting rod is fixed through a jacking bolt matched with the fixing holes.

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