Nondestructive detection device for welded pipe joint
By designing rotating and fixing components, the shortcomings of the non-destructive testing device for welded pipe joints in terms of fixation and height adjustment are solved, achieving stable clamping and flexible height adjustment, thus improving the accuracy and efficiency of testing.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- HANGZHOU HONGAN TESTING TECH CO LTD
- Filing Date
- 2025-05-20
- Publication Date
- 2026-04-28
AI Technical Summary
Existing non-destructive testing devices for welded pipe joints have problems with insecure fixing and inflexible height adjustment, which affect the accuracy and efficiency of testing.
The welding pipe joint is fixed at both ends by using rotating and fixing components. Combined with the design of height adjustment groove and nut, it achieves stable clamping and flexible height adjustment.
It provides a secure fixation and quick height adjustment, ensuring the accuracy and efficiency of the inspection, reducing the risk of probe damage, and adapting to welded pipe joints of different lengths.
Smart Images
Figure CN224176511U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of non-destructive testing, and in particular to a non-destructive testing device for welded pipe joints. Background Technology
[0002] In industrial production and engineering construction, the quality of welded pipe joints is crucial to the safe operation of the entire pipeline system. Various defects, such as cracks, can occur during the welding process. These defects can severely affect the strength and sealing performance of the welded pipe joints, and may even lead to leaks, ruptures, and safety accidents, resulting in economic losses. Therefore, non-destructive testing of welded pipe joints to detect surface cracks is a key step in ensuring the safety of pipeline systems.
[0003] Some existing non-destructive testing (NDT) devices use simple clamping structures to fix welded pipe joints, which often provide only limited clamping force. During the testing process, when the welded pipe joint needs to be rotated for full inspection, the joint is prone to shaking or displacement due to insecure fixing. This not only affects the accuracy of the test results, making it difficult for inspectors to accurately determine the location and size of cracks, but may also cause changes in the relative position of the probe and the surface of the welded pipe joint, increasing the risk of probe damage and reducing testing efficiency. Furthermore, existing NDT devices have shortcomings in height adjustment. In actual testing, different welded pipe joints may require inspection at different heights, but existing devices lack flexible height adjustment, making it difficult to quickly and accurately adjust the probe components to the appropriate height, which also affects the NDT performance of welded pipe joints.
[0004] In summary, existing non-destructive testing (NDT) devices for welded pipe joints have numerous problems in fixing the joints, severely impacting the accuracy, efficiency, and reliability of NDT. Therefore, there is an urgent need to develop an NDT device that can firmly fix welded pipe joints and offers flexible height adjustment to meet the quality inspection requirements of industrial production and engineering construction. Utility Model Content
[0005] The purpose of this invention is to provide a non-destructive testing device for welded pipe joints, which can firmly fix the welded pipe joints and has flexible height adjustment, thus meeting the needs of quality inspection of welded pipe joints.
[0006] To achieve the above objectives, this technical solution provides a non-destructive testing device for welded pipe joints, comprising: a rotating assembly including a rotary motor and a rotary table driven to rotate by the rotary motor; a fixing assembly placed on the rotary table including a fixed base plate, a guide fixed to the fixed base plate, an adjusting member adjustablely disposed on the fixed base plate, and a fixing clamp slidably sleeved on the guide member, wherein the adjusting member is connected to the fixing clamp to achieve sliding on the guide member; and a testing assembly including a clamping fastener and a testing unit connected to the clamping fastener, wherein the clamping fastener is located above the fixing assembly and forms a clamping space, and the testing unit includes a telescopic adjusting member and a testing head fixed to the adjusting member, wherein the testing head is positioned facing the clamping space surrounded by the clamping fastener.
[0007] Compared with existing technologies, this technical solution has the following characteristics and beneficial effects:
[0008] The non-destructive testing device for welded pipe joints in this solution uses a fixing component and clamping fasteners to secure the lower and upper ends of the welded pipe joint respectively. This simultaneous and stable fixing method at both ends prevents the welded pipe joint from shaking and shifting during the testing process, providing a solid foundation for accurate testing. Furthermore, the clamping fasteners are slidably connected to a height adjustment groove on the support rod via a slider, with the friction between the slider and the height adjustment groove adjusted using a nut. When height adjustment is needed, loosening the nut allows the slider to slide easily, and tightening the nut after reaching the target position locks it in place. This design allows the clamping fasteners to be quickly and accurately adjusted to the appropriate height to accommodate welded pipe joints of different lengths, meeting diverse testing needs. Attached Figure Description
[0009] Figure 1 This is a schematic diagram of the overall structure of the non-destructive testing device for welded pipe joints in this scheme.
[0010] Figure 2 This is a structural diagram of the fixed components in this solution.
[0011] Figure 3 This is a schematic diagram of the detection component of this scheme.
[0012] In the diagram: 10-Rotating component, 11-Rotating motor, 12-Rotating table, 121-Pulley, 30-Fixing component, 31-Fixing clamp, 311-Arc clamping piece, 32-Fixing base plate, 33-Adjusting component, 34-Guide component, 40-Supporting component, 41-Supporting base plate, 411-Slide groove, 42-Supporting base, 43-Supporting rod, 50-Detection component, 51-Clamping fastener, 511-Clamping ring, 512-Clamping component, 52-Connecting component, 53-Detection unit, 531-Roller, 532-Adjusting component, 533-Detector head. Detailed Implementation
[0013] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art are within the protection scope of the present utility model.
[0014] Those skilled in the art should understand that, in the disclosure of this utility model, the terms "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, the above terms should not be construed as limitations on this utility model.
[0015] Example 1
[0016] This solution provides a non-destructive testing device for welded pipe joints, used for non-destructive testing of the surface of welded pipe joints to detect the presence of cracks, including:
[0017] The rotating assembly (10) includes a rotary motor (11) and a rotary table (12) driven to rotate by the rotary motor (11);
[0018] The fixing assembly (30) placed on the rotating table (12) includes a fixed base plate (32), a guide (34) fixed on the fixed base plate (32), an adjusting member (33) adjustable on the fixed base plate (32), and a fixing clamp (31) slidably sleeved on the guide (34). The adjusting member (33) is connected to the fixing clamp (31) to achieve sliding on the guide (34).
[0019] The detection assembly (50) includes a clamp fastener (51) and a detection unit (53) connected to the clamp fastener (51), wherein the clamp fastener (51) is located above the fixing assembly (30) and forms a clamp space, and the detection unit (53) includes a telescopic adjustment member (532) and a detection head (533) fixed on the adjustment member (532), the detection head (533) being positioned toward the clamp space surrounded by the clamp fastener (51).
[0020] The non-destructive testing device for welded pipe joints further includes a support assembly (40), which includes a support base (42) and a support rod (43) disposed on one side of the support base (42), wherein the support rod (43) is intersecting with the support base (42).
[0021] In some embodiments, a mounting groove is provided on the support base (42), a rotary motor (11) is disposed in the mounting groove, and the output shaft of the rotary motor (11) protrudes relative to the support base (42) to connect to a rotary table (12) placed above the support base (42).
[0022] To facilitate the rotation of the rotary table (12), the surface of the support base (42) of this design is provided with a support base plate (41), and the side of the support base plate (41) is provided with a sliding groove (411). The bottom of the rotary table (12) is provided with a pulley (121), which rolls within the sliding groove (411). Specifically, the sliding groove (411) on the support base plate (41) of this design is designed as an annular shape so that the rotary table (12) can rotate relative to the support base plate (41) under the drive of the rotary motor (11).
[0023] In addition, the fixing component (30) of this solution is used to fix the lower end of the welded pipe joint, and the clamp fastener (51) is used to fix the upper end of the welded pipe joint. Considering that the position of the welded pipe joint to be inspected is different, this solution is provided with a support rod (43) set along the height direction. The clamp fastener (51) is slidably connected to the support rod (43) along the height direction, and the clamp space formed by the clamp fastener (51) is located in the same axial direction of the same height direction as the fixing component (20).
[0024] In some embodiments, the support rod (43) has a height adjustment groove on its side, and the clamp fastener (51) is slidably connected to the height adjustment groove by a slider. Specifically, the end of the slider has a bolt hole, and the side of the height adjustment groove also has a groove. The slider is slidably disposed in the height adjustment groove and fixed to the height adjustment groove by a nut. When it is necessary to adjust the height of the clamp fastener, the nut is loosened, which reduces the friction between the slider and the height adjustment groove. At this time, the slider can be easily slid up and down along the height adjustment groove, thereby moving the clamp fastener to the required height position. After the slider is moved to the target position, the nut is tightened. The nut will press the slider tightly against one side wall of the height adjustment groove, thereby increasing the friction between the slider and the height adjustment groove to achieve locking and prevent the clamp fastener from continuing to slide.
[0025] The structure of the fixing component (30) in this solution is as follows: Figure 2 As shown, the fixed base plate (32) on the fixed assembly (30) is fixed on the rotating table (12) to rotate with the rotation of the rotating table (12), and the guide (34) and the adjusting member (33) are arranged parallel to each other on the fixed base plate (32).
[0026] In some embodiments, the adjusting member (33) includes a positive lead screw and a negative lead screw that rotate relative to each other, wherein the positive lead screw and the negative lead screw are provided with threads in opposite directions, and the fixing clamp (32) slides under the adjustment of the adjusting member (33).
[0027] Specifically, this solution includes two fixed clamps (31) arranged opposite to each other. The two fixed clamps (31) are connected to the positive screw and the negative screw respectively, and the two fixed clamps (31) are slidably sleeved on the same guide (34). The relative position of the two fixed clamps (31) is adjusted by the relative rotation of the positive screw and the negative screw.
[0028] In some embodiments, each fixing clamp (41) is provided with an arc-shaped clamping piece (311), and the arc-shaped clamping pieces on the two fixing clamps (41) are arranged opposite to each other. In other words, the arc-shaped clamping pieces on the two fixing clamps (41) are bent in opposite directions. When it is necessary to test the welded pipe joint, the welded pipe joint is placed between the fixing clamps (31) and adjusted by the adjusting member (33) so that the fixing clamps (31) clamp the welded pipe joint.
[0029] The structure of the detection component (50) in this scheme is as follows: Figure 3 As shown, the clamp fastener (51) of the detection component (50) of this scheme includes a clamp ring (511) and a plurality of clamping members (512) disposed inside the clamp ring (511). The clamping members (512) surround to form a clamp space, and the welded pipe joint to be tested is clamped and fastened in the clamp space.
[0030] In some embodiments, the clamping member (512) includes a threaded post and a threaded tube connected to each other, and the end of the threaded tube is connected to an arc-shaped piece, wherein the outer surface of the threaded post is provided with an external thread that matches the internal thread of the threaded tube. When it is necessary to clamp the welded pipe joint, the threaded tube is rotated, and due to the transmission action of the thread, the threaded tube will move along the axial direction of the threaded post toward the welded pipe joint, thereby driving the arc-shaped piece to move closer to the welded pipe joint until the arc-shaped piece is tightly fitted onto the welded pipe joint, thus achieving the clamping function. To release the welded pipe joint, the threaded tube is rotated in the opposite direction, so that the arc-shaped piece moves away from the welded pipe joint.
[0031] In some embodiments, the clamping ring (511) is composed of two clamping parts connected by nuts to facilitate the fastening of the welded pipe joint.
[0032] In some embodiments, the clamp fastener (51) is connected to the detection unit (53) via a connector (52) so that the probe head (533) on the detection unit (53) is directly opposite the surface of the welded pipe joint clamped by the clamp fastener (51).
[0033] In some embodiments, the adjusting member (532) on the detection unit (53) includes a fixed rod connected to the connecting member (52) and a telescopic rod that is telescopically arranged relative to the fixed rod, and the detection head (522) is disposed at the bottom of the telescopic rod and is disposed toward the surface of the welded pipe joint.
[0034] To ensure that the detection distance is not damaged without damaging the surface of the welded pipe joint, this solution provides a roller (531) at the bottom of the telescopic rod. The displacement of the telescopic rod (531) relative to the fixed rod is adjusted so that the roller (531) abuts against the surface of the welded pipe joint.
[0035] Specifically, when the non-destructive testing device for welded pipe joints is in operation, the lower end of the welded pipe joint is first clamped with the fixing clamp of the fixing component, and the upper end is held with the clamp fastener. The detection unit is adjusted so that the rollers contact the surface of the joint. The rotary motor is started to drive the rotary table to rotate, which in turn drives the fixing component and the welded pipe joint to rotate. The detection head of the detection unit then performs non-destructive testing on the surface of the rotating welded pipe joint to detect whether there are cracks.
[0036] Those skilled in the art should understand that the technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments have been described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.
[0037] The above embodiments are merely illustrative of several implementation methods of this application, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of this application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this application should be determined by the appended claims.
Claims
1. A non-destructive testing device for welded pipe joints, characterized in that, include: A rotating assembly, including a rotary motor and a rotary table driven to rotate by the rotary motor; The fixed assembly placed on the rotating table includes a fixed base plate, a guide fixed on the fixed base plate, an adjustable member adjustable on the fixed base plate, and a fixed clamp slidably sleeved on the guide member. The fixed clamp connected to the adjustable member enables sliding on the guide member. The detection assembly includes a clamp fastener and a detection unit connected to the clamp fastener, wherein the clamp fastener is located above the fixing assembly and forms a clamp space, and the detection unit includes a telescopic adjustment member and a detection head fixed on the adjustment member, the detection head being positioned toward the clamp space surrounded by the clamp fastener.
2. The non-destructive testing device for welded pipe joints according to claim 1, characterized in that, The support assembly includes a support base and a support rod disposed on one side of the support base, wherein the support rod is intersecting with the support base.
3. The non-destructive testing device for welded pipe joints according to claim 2, characterized in that, The surface of the support base is provided with a support plate, the side of the support plate is provided with a sliding groove, and the bottom of the rotary table is provided with a pulley, which rolls in the sliding groove.
4. The non-destructive testing device for welded pipe joints according to claim 2, characterized in that, The support rod is set along the height direction, and the clamp fastener is slidably connected to the support rod along the height direction, and the clamp space formed by the clamp fastener is located on the same axial direction of the same height as the fixing component.
5. The non-destructive testing device for welded pipe joints according to claim 1, characterized in that, The fixed base plate on the fixed component is fixed to the rotating table, and the guide components and the adjusting components are arranged parallel to each other on the fixed base plate.
6. The non-destructive testing device for welded pipe joints according to claim 1, characterized in that, The adjusting component includes a positive lead screw and a negative lead screw that rotate relative to each other, wherein the positive lead screw and the negative lead screw are provided with threaded portions in opposite directions, and two fixed clamps are respectively connected to the positive lead screw and the negative lead screw, and both fixed clamps are slidably sleeved on the same guide member.
7. The non-destructive testing device for welded pipe joints according to claim 1, characterized in that, The clamping fastener of the detection component includes a clamping ring and multiple clamping members disposed inside the clamping ring, which surround to form a clamping space.
8. The non-destructive testing device for welded pipe joints according to claim 7, characterized in that, The clamping element includes a threaded column and a threaded tube that are connected to each other, and the end of the threaded tube is connected to an arc plate, wherein the outer surface of the threaded column is provided with an external thread that matches the internal thread of the threaded tube.
9. The non-destructive testing device for welded pipe joints according to claim 1, characterized in that, The clamp fastener is connected to the detection unit via a connector.
10. The non-destructive testing device for welded pipe joints according to claim 1, characterized in that, The adjustment mechanism on the detection unit includes a fixed rod connected to the connector and a telescopic rod that extends and retracts relative to the fixed rod. The detection head is located at the bottom of the telescopic rod and faces the surface of the welded pipe joint.