Radiographic inspection auxiliary tool for welding seam of stainless steel medium-and-large-diameter pipeline

Abstract

The utility model discloses a stainless steel medium and large pipe diameter welding seam radiographic inspection auxiliary tool which comprises a hidden bag clamp and hook and loop fasteners symmetrically arranged on the two sides of the hidden bag clamp and used for fixing binding belts, and the surfaces, away from the hidden bag clamp, of the binding belts are provided with a pressing type button male buckle and a pressing type button female buckle. The configured pressing type button male buckle bypasses a detected object and then is connected with the pressing type button female buckle, and the binding belt is fixed on the detected object. The negative film fixing device is simple in structure, can fix the negative film on a detected object through the connection between the binding belt and the hidden bag clip, solves the problem that the negative film of a stainless steel pipeline is difficult to fix, and improves the detection efficiency and the negative film image quality.

Description

Technical Field

[0001] The utility model relates to the technical field of ray detection, in particular to a ray detection auxiliary tool for stainless steel medium- and large-diameter pipeline welds. Background Art

[0002] Stainless steel pipes play a vital role in thermal power plants because of their corrosion resistance, high temperature resistance and high strength. These characteristics make stainless steel pipes widely used in multiple key systems of thermal power plants. Therefore, it is very important to conduct post-weld inspection of stainless steel welds during installation. Due to the coarse grains of austenitic stainless steel joints, the results of ultrasonic inspection are inaccurate. Compared with ultrasonic inspection, radiographic inspection is sensitive to circular and point defects, so the inspection of stainless steel butt welds is mainly based on radiographic inspection.

[0003] For ferromagnetic materials, magnets can be used to fix the film on the object to be inspected during X-ray inspection. However, since stainless steel pipes are non-ferromagnetic materials, conventional fixing methods cannot be used. Fixing the film has always been a difficult problem in the inspection process. In actual operations, most people use tape, rubber bands and other methods to fix the film. When using tape, inspectors found that sometimes there are various dust and welding slag on the inspected object, which reduces the stickiness of the tape and makes it impossible to make the film fit tightly to the inspected object; after the exposure is completed, the dark bag of the film is separated from the inspected object, resulting in ghosting of the film, unqualified blackness and other situations, resulting in high inspection time cost, high limitations and low work efficiency. For this reason, we propose a X-ray inspection auxiliary tool for stainless steel medium and large diameter pipeline welds, which is convenient for inspectors to detect stainless steel pipe welds. Utility Model Content

[0004] The utility model aims to provide a stainless steel medium and large diameter pipeline weld radiographic detection auxiliary tool to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an auxiliary tool for radiographic inspection of welds of stainless steel medium and large diameter pipelines, comprising a concealed bag clamp and Velcro straps symmetrically arranged on both sides of the concealed bag clamp to fix the binding belt positions, a push-type button male buckle and a push-type button female buckle are installed on the surface of the binding belt away from the concealed bag clamp, the push-type button male buckle is configured to bypass the object to be inspected and then connect with the push-type button female buckle to fix the binding belt on the object to be inspected.

[0006] As a further solution of the utility model: a plurality of lead type grooves are arranged in parallel on the surface of the dark bag clamp, and a comparison test block groove and an image quality meter groove are also arranged on the surface of the dark bag clamp.

[0007] As a further solution of the utility model: the material of the hidden bag clip is plastic plastic, the material of the bristle part of the Velcro is a polyester-nylon mixed material, and the material of the lead type slot, the comparison test block slot and the image quality meter slot are all transparent plastic.

[0008] As a further solution of the utility model: the hidden pocket folder is a two-layer structure, and the interior thereof is used for placing a negative film.

[0009] As a further solution of the utility model: the binding belt is made of nylon grade A material and non-hair-grabbing material, and the push-type button male buckle and the push-type button female buckle are both made of ABS material.

[0010] As a further solution of the utility model: the width of the binding belt is 20 mm, and the diameters of the push-type male button and the push-type female button are 10 mm.

[0011] As a further solution of the utility model: the Velcro includes a Velcro round hair portion provided on the surface of the binding belt and a Velcro barbed hair portion provided on the surface of the hidden bag clip, which are configured to facilitate disassembly and assembly between the binding belt and the hidden bag clip.

[0012] Compared with the prior art, the utility model has the following beneficial effects: the utility model has a novel structure and can fix the film on the inspected object through the connection between the binding belt and the hidden bag clip, thereby solving the problem that the film of the stainless steel pipe is difficult to fix and improving the inspection efficiency and the film image quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a schematic diagram of the auxiliary tool of the utility model in use;

[0014] Figure 2 This is a front view of the binding belt of the utility model;

[0015] Figure 3 This is a schematic diagram of the back side of the binding belt of the utility model;

[0016] Figure 4 This is a schematic diagram of the hidden bag clip of the utility model;

[0017] Figure 5 This is a schematic diagram of the connection between the binding belt and the hidden bag clip of the utility model;

[0018] In the figure: 1. Binding belt; 2. Velcro part; 3. Push-on button male button; 4. Push-on button female button; 5. Concealed pocket clip; 6. Velcro part; 7. Type slot; 8. Comparison test block slot; 9. Image quality meter slot. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0020] See also Figure 1-5 In an embodiment of the utility model, a radiographic detection auxiliary tool for stainless steel medium and large diameter pipeline welds includes a concealed bag clamp 5 and Velcro straps symmetrically arranged on both sides of the concealed bag clamp 5 to fix the binding belt 1. The concealed bag clamp 5 is a two-layer structure, and its interior is used to place a film. A push-type button male buckle 3 and a push-type button female buckle 4 are installed on the surface of the binding belt 1 away from the concealed bag clamp 5. The push-type button male buckle 3 is configured to bypass the object to be inspected and then connect with the push-type button female buckle 4 to fix the binding belt 1 on the object to be inspected. Its main purpose is to fix the binding belt 1 on the object to be inspected.

[0021] See also Figure 4 In one embodiment, in this embodiment, preferably, a plurality of lead type grooves 7 are arranged in parallel on the surface of the dark bag holder 5, and a comparison test block groove 8 and an image quality meter groove 9 are also arranged on the surface of the dark bag holder 5, the main purpose of which is to place the X-ray detection film and provide a placement position for the lead type, comparison test block, and image quality meter to ensure that their images remain on the film.

[0022] See also Figure 4 In one embodiment, in this embodiment, preferably, the material of the hidden bag clip 5 is plastic plastic or artificial leather, the material of the Velcro bristle part 6 is a polyester nylon mixed material, and the material of the lead type slot 7, the comparison test block slot 8 and the image quality meter slot 9 are all transparent plastic.

[0023] See also Figure 3 In one embodiment, in this embodiment, preferably, the binding belt 1 is made of nylon grade A material and non-hair-grabbing material, and the push-type button male buckle 3 and the push-type button female buckle 4 are both made of ABS material.

[0024] See also Figure 3 In one embodiment, in this embodiment, preferably, the width of the binding belt 1 is 20 mm, and the diameters of the push-button male buckle 3 and the push-button female buckle 4 are 10 mm.

[0025] See also Figure 2-5In one embodiment, in this embodiment, preferably, the Velcro includes a Velcro hair portion 2 provided on the surface of the binding belt 1 and a Velcro barb portion 6 provided on the surface of the hidden bag clip 5, which is configured to facilitate the disassembly and assembly between the binding belt 1 and the hidden bag clip 5. When the Velcro barb portion 6 and the Velcro hair portion 2 are in contact with each other, the binding belt 1 and the hidden bag clip 5 are connected together.

[0026] The working principle and use process of the utility model are as follows: first, the binding belt 1 is passed through the inspected object, and then the push-type button male buckle 3 and the push-type button female buckle 4 are pressed tightly to fix them on the surface of the binding belt 1, and then the Velcro bristle part 6 on the dark bag clip 5 is attached to the Velcro bristle part 2, and the film for radiation detection is placed in the dark bag clip 5. According to the inspected object, the selected lead type code is placed in the lead type slot 7 in sequence, the comparison test block selected according to the standard is placed in the comparison test block slot 8, and the image quality meter is placed in the image quality meter slot 9. Then the inspection personnel place the dark bag clip 5 at the inspected position and ensure that the lead type slot 7, the comparison test block slot 8, and the image quality meter slot 9 are facing the inspected object.

[0027] Although this specification is described according to implementation modes, not every implementation mode includes only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

[0028] Therefore, the above description is only a preferred embodiment of the present application and is not intended to limit the scope of implementation of the present application; that is, all equivalent changes made according to the scope of the claims of the present application are within the protection scope of the claims of the present application.

Claims

1. A radiographic inspection auxiliary tool for stainless steel medium and large diameter pipeline welds, characterized in that: The invention comprises a concealed bag clip (5) and hook and loop fasteners symmetrically arranged on both sides of the concealed bag clip (5) to fix the position of a binding belt (1); a surface of the binding belt (1) away from the concealed bag clip (5) is provided with a push-type button male buckle (3) and a push-type button female buckle (4); the push-type button male buckle (3) is configured to pass around an object to be detected and then connect with the push-type button female buckle (4) to fix the binding belt (1) on the object to be detected.

2. The auxiliary tool for radiographic detection of stainless steel medium and large diameter pipeline welds according to claim 1 is characterized in that: The surface of the dark bag clamp (5) is provided with a plurality of lead type grooves (7) in parallel, and the surface of the dark bag clamp (5) is also provided with a comparison test block groove (8) and an image quality meter groove (9).

3. The auxiliary tool for radiographic detection of stainless steel medium and large diameter pipeline welds according to claim 2 is characterized in that: It also includes a Velcro bristle portion (6), the material of the concealed bag clip (5) is plastic plastic, the material of the Velcro bristle portion (6) is a polyester nylon mixed material, and the material of the lead type slot (7), the comparison test block slot (8) and the image quality meter slot (9) are all transparent plastic material.

4. The auxiliary tool for radiographic detection of stainless steel medium and large diameter pipeline welds according to claim 1, characterized in that: The hidden pocket folder (5) is a two-layer structure, and the interior thereof is used for placing a negative film.

5. The auxiliary tool for radiographic detection of stainless steel medium and large diameter pipeline welds according to claim 1, characterized in that: The binding belt (1) is made of nylon grade A material and non-linting material, and the push-type button male buckle (3) and the push-type button female buckle (4) are both made of ABS material.

6. The auxiliary tool for radiographic detection of stainless steel medium and large diameter pipeline welds according to claim 1, characterized in that: The width of the binding belt (1) is 20 mm, and the diameters of the push-type male button (3) and the push-type female button (4) are 10 mm.

7. The auxiliary tool for radiographic detection of stainless steel medium and large diameter pipeline welds according to claim 1, characterized in that: The Velcro comprises a Velcro fur portion (2) provided on the surface of the binding belt (1) and a Velcro fur portion (6) provided on the surface of the concealed bag clip (5), and is configured to facilitate disassembly and assembly between the binding belt (1) and the concealed bag clip (5).

Images