Device suitable for bar butt weld radiographic inspection

Abstract

The utility model discloses a device suitable for radiographic inspection of a butt weld of a bar, which comprises a square compensation block, and the compensation block is sleeved at the butt weld of the bar and is detachably connected with the bar. According to the utility model, the square compensation block is arranged, so that the ray detection of the bar is changed into the ray detection of the plate through the device, and the detection efficiency and the detection quality are improved. And meanwhile, the compensation blocks are detachably connected with the bars, so that the device can be flexibly adjusted according to the bars of different specifications and shapes, and the adaptability and universality of the device are enhanced.

Description

Technical Field

[0001] The utility model relates to the technical field of radiographic flaw detection of butt welds of bar materials, in particular to a device suitable for radiographic flaw detection of butt welds of bar materials. Background Art

[0002] Due to the shape of bar materials, radiographic inspection of butt welds primarily results in a large thickness difference in the direction of radiographic penetration, which creates the following difficulties: First, the penetration length is very small, requiring multiple penetrations to achieve 100% inspection of each butt weld of any bar specification, resulting in high testing costs and long inspection cycles. Second, the film has large variations in blackness and severe scattering, which produces edge erosion and blurs the image boundaries on the radiographic film, resulting in poor radiographic quality. However, in industrial production, radiographic inspection of butt welds on bar materials is often required. Therefore, to address these issues, a device suitable for radiographic inspection of butt welds on bar materials is needed that can detect defects in butt welds while ensuring quality and efficiency. Utility Model Content

[0003] The purpose of the utility model is to provide a device suitable for radiographic flaw detection of butt welds of bar materials, so as to solve the problems mentioned in the above background technology.

[0004] In order to solve the above technical problems, the utility model provides a device suitable for radiographic flaw detection of butt welds of rods, which includes a square compensation block, which is sleeved on the butt welds of the rods and is detachably connected to the rods.

[0005] Furthermore, the compensation block includes an upper compensation block and a lower compensation block that are symmetrically arranged, and the upper compensation block and the lower compensation block are detachably connected. The middle part of the upper compensation block and the lower compensation block are both provided with a limiting groove that passes through in the transverse direction. The cross-section of the limiting groove is semicircular and is adapted to the rod.

[0006] Furthermore, the upper compensation block and the lower compensation block are connected by a screw.

[0007] Furthermore, both ends of the upper compensation block and the lower compensation block are provided with through holes in the longitudinal direction, the screw passes through the through holes, both ends of the screw are threadedly connected with nuts, and the two nuts are in contact with the upper compensation block and the lower compensation block respectively.

[0008] Furthermore, the compensation block is made of steel plate.

[0009] The beneficial effects of this utility model are as follows: by providing a square compensation block, the device transforms radiographic inspection of bar materials into radiographic inspection of plates, thereby improving inspection efficiency and quality. Furthermore, the removable connection between the compensation block and the bar allows for flexible adjustment to bars of varying sizes and shapes, enhancing the device's adaptability and versatility. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 This is a schematic diagram of the structure of the embodiment of the present utility model when used.

[0011] Figure 2 This is a schematic diagram of the explosion structure of an embodiment of the utility model.

[0012] Among them: 1. Rod; 2. Compensation block; 21. Upper compensation block; 22. Lower compensation block; 3. Screw; 4. Nut. DETAILED DESCRIPTION

[0013] The following will be combined with the accompanying drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiment described is only one embodiment of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0014] In order to make the objectives, technical solutions and advantages of this application clearer, this application is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0015] In the following description, references to "one embodiment," "an embodiment," "an example," "an example," etc. indicate that the embodiment or example described may include certain features, structures, characteristics, properties, elements, or limitations, but not every embodiment or example necessarily includes the certain features, structures, characteristics, properties, elements, or limitations. In addition, repeated use of the phrase "according to one embodiment of the present application" may refer to the same embodiment, but does not necessarily refer to the same embodiment.

[0016] like Figure 1-2 As shown, the utility model discloses a device suitable for radiographic flaw detection of butt welds of rods 1, which includes a square compensation block 2, which is sleeved on the butt welds of the rods 1 and detachably connected to the rods 1.

[0017] The main principle of this device is based on radiographic testing technology, specifically utilizing the properties of X-rays or gamma rays to perform nondestructive testing on the butt weld of bar 1. Radiographic testing is a method that uses the fact that radiation (such as X-rays or gamma rays) penetrates a material and, when encountering materials of varying densities or thicknesses, produces varying degrees of attenuation, forming an image on film or a detector, thereby identifying internal defects in the material.

[0018] When X-rays or gamma rays pass through the butt weld of bar 1, there may be defects such as pores, slag inclusions, and unfused welds in the weld. These defects absorb and scatter the rays differently from the surrounding normal materials, resulting in a light-dark contrast in the image formed by the rays on the film or detector, thereby clearly showing the defects inside the weld.

[0019] Specifically for this device, the user can process a suitable square compensation block 2 according to the diameter of the rod 1 and put it on the thinner position of the rod 1 in the direction of radiography, so as to reduce the difference in the thickness of the radiographic radiography, so that the radiographic detection of the rod 1 can be transformed into the radiographic detection of the plate through this device, thereby making the detection that requires multiple radiography to be completed become one that can be completed in one time, and the blackness of the film is relatively uniform, ensuring the detection quality and efficiency.

[0020] By providing a square compensation block 2, this device transforms radiographic inspection of a bar 1 into radiographic inspection of a plate, improving inspection efficiency and quality. Furthermore, the removable connection between the compensation block 2 and the bar 1 facilitates flexible adjustment to accommodate bars 1 of varying sizes and shapes, enhancing the device's adaptability and versatility.

[0021] In one embodiment, the compensation block 2 includes an upper compensation block 21 and a lower compensation block 22 that are symmetrically arranged. The upper compensation block 21 and the lower compensation block 22 are detachably connected. A limiting groove running through the middle of the upper compensation block 21 and the lower compensation block 22 is opened in the transverse direction. The cross-section of the limiting groove is semicircular and is adapted to the rod 1.

[0022] Specifically, when the butt weld of the bar 1 needs to be radiographically inspected, the upper compensation block 21 and the lower compensation block 22 are first placed on both sides of the weld to ensure that the limit groove fits tightly with the bar 1. Since the cross-section of the limit groove is semicircular and adapted to the bar 1, it is possible to minimize the gap between the compensation block 2 and the bar 1, confirming that the weld is located at the center of the compensation block 2, thereby reducing the scattering and uneven attenuation of the radiation when passing through the weld. Subsequently, the upper compensation block 21 and the lower compensation block 22 are fixed together by detachable connectors (such as bolts, snaps, etc.) to form a complete compensation device, and radiographic inspection can be performed.

[0023] In one embodiment, upper compensating block 21 and lower compensating block 22 are connected by screw 3. This screw connection makes compensating block 2 more stable during testing, avoiding testing errors caused by loosening of compensating block 2. This stability also improves the overall durability and reliability of the device.

[0024] In one embodiment, both ends of the upper and lower compensation blocks 21, 22 have longitudinal through-holes, through which screw rods 3 pass. Nuts 4 are threadedly connected at both ends of the screw rods 3, and the two nuts 4 respectively contact the upper and lower compensation blocks 21, 22. This further strengthens the connection between the compensation block 2 and the bar 1 and provides more flexible adjustment space and tightening degree between the upper and lower compensation blocks 21, 22.

[0025] In one embodiment, compensation block 2 is made of steel plates. Specifically, two steel plates with a material attenuation coefficient similar to that of bar 1 are selected. UT and RT testing are performed on the raw steel plates to ensure that they are free of defects. The tested steel plates are then processed into upper and lower compensation blocks 21 and 22, respectively. This helps reduce detection errors caused by deformation or damage to compensation block 2. It also reduces radiation scattering and uneven attenuation, improving the clarity and accuracy of the detected images.

[0026] The working principle of this utility model is as follows: two steel plates with a material attenuation coefficient similar to that of the bar 1 are selected, and the raw steel plates are subjected to UT and RT testing to ensure that the materials are free of any defects. The tested steel plates are then processed into upper and lower compensation blocks 21 and 22 according to the specifications of the bar 1.

[0027] When the butt weld of bar 1 requires radiographic inspection, the upper and lower compensation blocks 21 and 22 are placed separately over the butt weld, ensuring that the retaining grooves fit tightly against bar 1 and that the weld is centered in compensation block 2. After confirming the direction of radiographic inspection, screw 3 is passed through the through-holes of upper and lower compensation blocks 21 and 22, respectively. Two nuts 4 are screwed into the ends of screw 3, respectively, contacting upper and lower compensation blocks 21 and 22, forming a complete compensation device. Radiographic inspection can then be performed.

[0028] By adopting this method, the butt welds of bars 1 of any specifications only need to be inspected once to obtain a radiographic film that meets the standard requirements, which greatly reduces the inspection cost of the butt welds of such bars 1 and increases the inspection efficiency exponentially, thus saving manufacturing costs and shortening the production cycle for the company's production and operation activities.

[0029] By providing a square compensation block 2, this device transforms radiographic inspection of a bar 1 into radiographic inspection of a plate, improving inspection efficiency and quality. Furthermore, the removable connection between the compensation block 2 and the bar 1 facilitates flexible adjustment to accommodate bars 1 of varying sizes and shapes, enhancing the device's adaptability and versatility.

[0030] The above description of the disclosed embodiments enables one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be readily apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not limited to the embodiments shown herein, but is intended to conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A device suitable for radiographic inspection of butt welds of bar materials, characterized by: The utility model comprises a square compensation block, which is sleeved on the butt weld of the rod and is detachably connected to the rod.

2. The device for radiographic flaw detection of butt welds of bars according to claim 1, characterized in that: The compensation block includes an upper compensation block and a lower compensation block that are symmetrically arranged. The upper compensation block and the lower compensation block are detachably connected. A limiting groove running through the middle of the upper compensation block and the lower compensation block is opened in the transverse direction. The cross-section of the limiting groove is semicircular and is adapted to the rod.

3. The device for radiographic flaw detection of bar butt welds according to claim 2, characterized in that: The upper compensation block and the lower compensation block are connected by a screw.

4. The device for radiographic flaw detection of bar butt welds according to claim 3, characterized in that: Both ends of the upper compensation block and the lower compensation block are provided with through holes in the longitudinal direction, the screw passes through the through holes, both ends of the screw are threadedly connected with nuts, and the two nuts are in contact with the upper compensation block and the lower compensation block respectively.

5. The device for radiographic flaw detection of bar butt welds according to claim 1, characterized in that: The compensation block is made of steel plate.

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