Stepped test block for weld defect detection

Abstract

The utility model relates to the technical field of incomplete penetration detection of pipelines, in particular to a stepped test block for detecting weld defects. According to the technical scheme, an adjusting plate is arranged on one side of a fixing block, a second flat-bottom hole and a third flat-bottom hole are formed in the fixing block, a first flat-bottom hole is formed in the adjusting plate, and a second clamping groove and a third clamping groove are formed in the two sides of the fixing block respectively; the adjusting plate is connected with the second clamping groove or the third clamping groove in a clamped mode through the second inserting block. A first clamping groove is formed in the bottom end of the fixing block, a first inserting block is arranged at the bottom end of the adjusting plate, and the adjusting plate is clamped in the first clamping groove of the fixing block through the first inserting block and then is attracted and fixed through the first magnet and the second magnet. According to the utility model, the adjusting plate can flexibly slide on the fixed block or be fixed at different positions, so that different detection requirements are met, and the adjusting plate can be conveniently clamped on the fixed block, so that the device is convenient to store and carry.

Description

TECHNICAL FIELD

[0001] The utility model relates to pipeline incomplete penetration detection technical field, concretely relates to a kind of step test block for weld defect detection. BACKGROUND

[0002] During the periodic inspection of pressure pipeline, incomplete penetration defects are relatively common due to factors such as welding during installation. Currently, digital radiography (DR) is commonly used for detection, which provides real-time imaging with short exposure time and uses computers and image processing to theoretically achieve accurate measurement of defects. However, due to the structure of the DR system and the angle of the ray beam, there are problems such as geometric magnification and edge distortion in the detection image. If a single correction coefficient is used to calculate the entire image, there will be errors. For defect detection, the current error is acceptable. However, for measurements requiring high accuracy, such as the detection of wall thickness reduction caused by corrosion, a standard test piece of known size needs to be placed in the measured area to participate in imaging, calculate the correction coefficient of this point or area, and finally convert the actual accurate data of this area. Therefore, to achieve high-precision detection results, a standard test piece that matches the requirements must be used to improve detection accuracy.

[0003] After searching, patent publication No. CN202123398048.7 discloses a step test block for weld defect detection. Although this device can measure the attenuation coefficient of the same material by setting height-decreasing steps on the body and setting first flat-bottom holes of the same size and second flat-bottom holes symmetrically opposite to the first flat-bottom holes at the same position on each step, the length of the entire device is relatively long when it is used due to the multiple steps. This not only increases the volume of the device, but also makes it inconvenient to carry and store. This inconvenience is particularly evident when frequent movement or detection at different locations is required. UTILITY MODEL CONTENTS

[0004] To address the shortcomings of the prior art, the utility model provides a step test block for weld defect detection, which solves the problems raised in the background art.

[0005] The solution to the above technical problem is as follows:

[0006] A step test block for weld defect detection includes a fixed block, an adjusting plate is provided on one side of the fixed block, a second flat-bottom hole and a third flat-bottom hole are formed in the fixed block, and a first flat-bottom hole is provided on the adjusting plate.

[0007] The fixing block is provided with a second clamping groove and a third clamping groove on two sides respectively, and the adjusting plate is provided with a second inserting block on one side.

[0008] The bottom end of the fixing block is provided with a first clamping groove, and the bottom end of the adjusting plate is provided with a first inserting block, and the first inserting block is provided with a first magnet, and the first clamping groove is provided with a second magnet.

[0009] On the basis of the above technical scheme, the utility model further can make improvement as follows.

[0010] Further, the second clamping groove and the third clamping groove are symmetrically distributed on the two sides of the fixing block, and the second clamping groove and the third clamping groove are staggered on the two sides of the fixing block.

[0011] The beneficial effects of the above further scheme are:

[0012] Because the second clamping groove and the third clamping groove are staggered on the two sides of the fixing block, the adjusting plate can be clamped with different clamping grooves through the second inserting block, thereby realizing different combinations. This design makes the test block have higher flexibility in the use process, and the position of the adjusting plate and the flat bottom hole can be adjusted according to actual needs. The staggered clamping groove design also facilitates the installation and disassembly of the adjusting plate. The operator can easily fix the adjusting plate on the fixing block through the inserting block without complex operation or tools.

[0013] Further, the first flat bottom hole and the third flat bottom hole have the same depth, and the second flat bottom hole has a depth twice that of the second flat bottom hole.

[0014] The beneficial effects of the above further scheme are:

[0015] Because the first flat bottom hole and the third flat bottom hole have the same depth, they can serve as a set of standardized comparison holes. When detecting weld defects, the echo signal strength of the two holes can be compared to determine whether there is a defect in the weld with a depth comparable to that of the two holes. The depth of the second flat bottom hole is twice that of the third flat bottom hole, which forms a depth gradient. By detecting flat bottom holes of different depths, the defect conditions of the weld at different depths can be evaluated, thereby more comprehensively understanding the quality of the weld.

[0016] Further, the second inserting block is adapted in size to the second clamping groove and the third clamping groove.

[0017] The beneficial effects of the above further scheme are:

[0018] The second plug-in block is matched in size with the second clamping groove and the third clamping groove, meaning that the plug-in block can be tightly inserted into the clamping groove to form a stable connection. This design helps to prevent loosening or falling off between the plug-in block and the clamping groove during use, thereby ensuring the overall stability and reliability of the step test block. Since the plug-in block is matched in size with the clamping groove, the installation process becomes simpler and faster. The operator can easily insert the plug-in block into the clamping groove without complex operations or tools. This not only improves the installation efficiency, but also reduces the operation difficulty, so that non-professionals can easily complete the installation work. The second plug-in block can be clamped with the second clamping groove and the third clamping groove respectively. This design allows the adjustment plate to be flexibly slid or fixed at different positions on the fixed block. By adjusting the clamping position of the plug-in block and the clamping groove, the position of the flat-bottom hole can be changed to meet different detection needs. This flexible adjustment improves the applicability and practicality of the test block.

[0019] Further, the first plug-in block is matched in size with the first clamping groove.

[0020] The beneficial effects of the above further scheme are:

[0021] The first plug-in block is matched in size with the first clamping groove, meaning that the plug-in block can be accurately inserted into the clamping groove to form a tight joint. This precise jointing method helps to reduce errors and gaps during jointing, ensuring the stability and reliability of the overall structure. The size-matched plug-in block and clamping groove make the installation process simpler and faster. The operator does not need to perform complex adjustments or corrections, but only needs to insert the plug-in block directly into the clamping groove to complete the installation. This not only improves the installation efficiency, but also reduces the operation difficulty and cost.

[0022] The utility model provides a kind of step test block for weld defect detection. It has the following

[0023] Beneficial effects:

[0024] The first flat-bottom hole on the adjustment plate has the same depth as the third flat-bottom hole on the fixed block, while the depth of the second flat-bottom hole is twice that of the third flat-bottom hole. This design allows users to choose different flat-bottom hole depths for weld defect detection as needed, increasing the flexibility and applicability of the test block. The adjustment plate is clamped with the second clamping groove or the third clamping groove of the fixed block through the second plug-in block, which allows the position of the adjustment plate to be easily adjusted, further increasing the flexibility of the test block.

[0025] Using the adjustment plate and fixed block with known thickness dimensions of the step test block to correct the attenuation coefficient, other thickness dimensions can be verified according to the attenuation coefficient, and the measurement accuracy can be calculated. This design ensures the accuracy and reliability of weld defect detection.

[0026] The bottom end of the fixing block is provided with a first clamping groove, and the bottom end of the adjusting plate is provided with a first plug-in block matched with the first clamping groove in size. This design enables the adjusting plate to be conveniently clamped on the fixing block, facilitating storage and carrying. The first plug-in block is provided with a first magnet, and the first clamping groove is provided with a second magnet. Through the adsorption effect of the magnets, the adjusting plate and the fixing block can be more firmly connected together, avoiding the problems of loosening or falling off that may occur during carrying or use. BRIEF DESCRIPTION OF DRAWINGS

[0027] The accompanying drawings, which are included to provide a further understanding of the present application and are incorporated in and constitute a part of this application, illustrate embodiments of the present application and serve to explain the present application. Features of the present application, both as to organization and method of operation, together with an understanding of the same, can be best understood by reference to the following detailed description, taken in connection with the accompanying drawings.

[0028] In the drawings:

[0029] Figure 1 is a schematic view of the present application;

[0030] Figure 2 is a schematic view of the present application;

[0031] Figure 3 is a schematic view of the present application;

[0032] Figure 4 is a schematic view of the present application.

[0033] In the drawings, the components represented by the numbers in the list are as follows:

[0034] 1, adjusting plate; 101, first flat bottom hole; 2, first plug-in block; 201, first magnet; 3, first clamping groove; 301, second magnet; 4, fixing block; 401, second flat bottom hole; 402, second clamping groove; 403, third flat bottom hole; 404, third clamping groove; 5, second plug-in block. DETAILED DESCRIPTION

[0035] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0036] Please refer to Figures 1 to 4 The embodiments provided by the present application are shown in the drawings.

[0037] Embodiment one

[0038] A step block for weld defect detection, comprising a fixed block 4, one side of the fixed block 4 is provided with an adjusting plate 1, the fixed block 4 is provided with a second flat-bottom hole 401 and a third flat-bottom hole 403, the adjusting plate 1 is provided with a first flat-bottom hole 101, the depth of the first flat-bottom hole 101 is the same as that of the third flat-bottom hole 403, and the depth of the second flat-bottom hole 401 is twice that of the second flat-bottom hole 401, because the depth of the first flat-bottom hole 101 is the same as that of the third flat-bottom hole 403, they can be used as a set of standardized comparison holes. When performing weld defect detection, the echo signal intensity of the two holes can be compared to determine whether there is a defect in the weld with a depth comparable to that of the two holes. The depth of the second flat-bottom hole 401 is twice that of the third flat-bottom hole 403, which forms a depth gradient. By detecting flat-bottom holes of different depths, the defect conditions of the weld at different depths can be evaluated, so that the quality of the weld can be more comprehensively understood, the two sides of the fixed block 4 are respectively provided with a second clamping groove 402 and a third clamping groove 404, the second clamping groove 402 and the third clamping groove 404 are symmetrically distributed on the two sides of the fixed block 4, and the second clamping groove 402 and the third clamping groove 404 are staggered on the two sides of the fixed block 4, because the second clamping groove 402 and the third clamping groove 404 are staggered on the two sides of the fixed block 4, the adjusting plate 1 can be clamped with different clamping grooves through the second plug-in block 5, so as to realize different combinations. This design makes the test block more flexible during use, and the position of the adjusting plate 1 and the flat-bottom hole can be adjusted according to actual needs. The staggered clamping groove design also facilitates the installation and removal of the adjusting plate 1. The operator can easily fix the adjusting plate 1 on the fixed block 4 through the plug-in block without complex operation or tools, one side of the adjusting plate 1 is provided with a second plug-in block 5, the size of the second plug-in block 5 is matched with that of the second clamping groove 402 and the third clamping groove 404, the size of the second plug-in block 5 is matched with that of the second clamping groove 402 and the third clamping groove 404, which means that the plug-in block can be tightly inserted into the clamping groove to form a stable connection. This design helps to prevent the plug-in block from loosening or falling off from the clamping groove during use, thereby ensuring the overall stability and reliability of the step block. Because the size of the plug-in block is matched with that of the clamping groove, the installation process becomes simpler and faster. The operator can easily insert the plug-in block into the clamping groove without complex operation or tools. This not only improves the installation efficiency, but also reduces the operation difficulty, so that non-professionals can easily complete the installation work. The second plug-in block 5 can be clamped with the second clamping groove 402 and the third clamping groove 404 respectively, this design makes the adjusting plate 1 can be flexibly slid or fixed at different positions on the fixed block 4. By adjusting the clamping position of the plug-in block and the clamping groove, the position of the flat-bottom hole can be changed to meet different detection needs.The adjustment flexibility improves the applicability and practicality of the test block. The adjustment plate 1 is clamped with the second clamping groove 402 or the third clamping groove 404 through the second plug-in block 5. The adjustment plate 1 with the known thickness size of the stepped test block and the fixing block 4 are used to correct the attenuation coefficient. Then, the other thickness sizes of the stepped test block are verified according to the attenuation coefficient, the measurement accuracy is calculated, and the attenuation coefficient of the stepped test block of the material is obtained.

[0039] Embodiment two

[0040] In order to facilitate storage when not in use, as shown in Figures 1 to 4 The application also includes that the bottom end of the fixing block 4 is provided with a first clamping groove 3, and the bottom end of the adjustment plate 1 is provided with a first plug-in block 2. The size of the first plug-in block 2 is matched with the size of the first clamping groove 3. The size of the first plug-in block 2 is matched with the size of the first clamping groove 3, which means that the plug-in block can be accurately inserted into the clamping groove to form a tight splicing. This accurate splicing method helps to reduce errors and gaps during splicing, ensuring the stability and reliability of the overall structure. The size-matched plug-in block and clamping groove make the installation process simpler and faster. The operator does not need to make complex adjustments or corrections, but only needs to insert the plug-in block into the clamping groove to complete the installation. This not only improves the installation efficiency, but also reduces the operation difficulty and cost. The first plug-in block 2 is provided with a first magnet 201, and the first clamping groove 3 is provided with a second magnet 301. When storing, the adjustment plate 1 is clamped in the first clamping groove 3 of the fixing block 4 through the first plug-in block 2, and then fixed by the first magnet 201 and the second magnet 301.

[0041] Working principle:

[0042] The stepped test block is composed of a fixing block 4 and an adjustment plate 1. The fixing block 4 is provided with flat-bottomed holes (second flat-bottomed hole 401 and third flat-bottomed hole 403) with different depths, and the adjustment plate 1 is also provided with a flat-bottomed hole (first flat-bottomed hole 101). The fixing block 4 and the adjustment plate 1 are connected to each other through plug-in blocks and clamping grooves. The adjustment plate 1 can slide on the fixing block 4 or be fixed at different positions to change the position of the flat-bottomed hole.

[0043] The stepped test block is composed of a fixing block 4 and an adjustment plate 1. The fixing block 4 is provided with flat-bottomed holes (second flat-bottomed hole 401 and third flat-bottomed hole 403) with different depths, and the adjustment plate 1 is also provided with a flat-bottomed hole (first flat-bottomed hole 101). The fixing block 4 and the adjustment plate 1 are connected to each other through plug-in blocks and clamping grooves. The adjustment plate 1 can slide on the fixing block 4 or be fixed at different positions to change the position of the flat-bottomed hole.

[0044] Through the design of magnet adsorption and the like, the stepped test block can be conveniently stored and carried, and is suitable for the detection requirements of weld defects in different scenes. Through the structural design of the clamping groove and the plug-in block, the stepped test block has stable structure and good durability, and can be used for a long time and keep accurate measurement results.

[0045] The basic principle and main features of the present application and the advantages of the present application are shown and described above, and it is obvious for those skilled in the art that the present application is not limited to the details of the above exemplary embodiments, and the present application can be realized in other specific forms without departing from the spirit or basic characteristics of the present application. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting, and the scope of the present application is defined by the appended claims rather than the above description, and therefore all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present application. Any reference signs in the claims should not be regarded as limiting the claims involved.

[0046] In addition, it should be understood that although the present specification is described in terms of embodiments, not every embodiment contains only one independent technical solution, and the description manner of the specification is only for the sake of clarity, those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that those skilled in the art can understand.

Claims

1. A stepped test block for weld defect detection, comprising a fixing block (4), an adjusting plate (1) provided on one side of the fixing block (4), a second flat-bottom hole (401) and a third flat-bottom hole (403) provided on the fixing block (4), and a first flat-bottom hole (101) provided on the adjusting plate (1), characterized in that: The fixing block (4) has a second slot (402) and a third slot (404) on both sides respectively. The adjusting plate (1) has a second plug-in block (5) on one side. The adjusting plate (1) is connected to the second slot (402) or the third slot (404) through the second plug-in block (5). The bottom end of the fixing block (4) is provided with a first slot (3), the bottom end of the adjusting plate (1) is provided with a first plug-in block (2), the first plug-in block (2) is provided with a first magnet (201), the first slot (3) is provided with a second magnet (301), the adjusting plate (1) is engaged in the first slot (3) of the fixing block (4) by the first plug-in block (2), and then fixed by the first magnet (201) and the second magnet (301).

2. The stepped test block for weld defect detection according to claim 1, characterized in that: The second slot (402) and the third slot (404) are symmetrically distributed on both sides of the fixing block (4), and the second slot (402) and the third slot (404) are staggered on both sides of the fixing block (4).

3. The stepped test block for weld defect detection according to claim 1, characterized in that: The first flat-bottom hole (101) and the third flat-bottom hole (403) have the same depth, and the depth of the second flat-bottom hole (401) is twice the depth of the second flat-bottom hole (403).

4. The stepped test block for weld defect detection according to claim 1, characterized in that: The second plug-in block (5) is adapted to the size of the second slot (402) and the third slot (404).

5. A stepped test block for weld defect detection according to claim 1, characterized in that: The size of the first plug-in block (2) is adapted to the size of the first slot (3).

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