A device for detecting a boiler tube

Abstract

The utility model relates to the technical field of boiler pipeline detection, and disclose a detection device for boiler pipeline, including flaw detector host computer and probe, the lower extreme of probe both sides all fixedly links to a group of articulated blocks, and the rotatory connection of two articulated blocks has the extension plate, the one side of extension plate away from probe is provided with the slot, the inside slide connection of slot has the connecting frame, the one side of connecting frame away from extension plate is fixedly connected with the wear plate, and the middle position slide connection of connecting frame has the magnetic attraction piece. This kind of detection device for boiler pipeline, when needing to fix the probe, only need to spread the extension plate, make magnetic attraction piece and boiler pipeline be pasted with just can, and magnetic attraction piece will be adsorbed on the boiler pipeline, thereby adsorbing and fixing the probe on the boiler pipeline, and the fixing mode is simple and easy to operate.

Description

Technical Field

[0001] This utility model relates to the field of boiler pipeline inspection technology, specifically to an inspection device for boiler pipelines. Background Technology

[0002] Given that welded sections of boiler piping, such as butt welds and branch pipe connection welds, are structurally weak points, it is essential to effectively mitigate potential welding defects such as incomplete penetration, lack of fusion, and cracks. To ensure the long-term safe operation of boiler piping, an ultrasonic flaw detector is typically used to systematically scan and inspect the weld area after welding is completed. This inspection method allows for a precise assessment of the internal quality of the weld, ensuring that its strength indicators fully meet established safety standards and specifications.

[0003] When inspecting pipes with an ultrasonic flaw detector, the probe needs to be moved to perform a full scan of the target area. Once a suspected defect signal, such as a crack, pore, or inclusion, is detected, the probe must be fixed, and the defect depth must be accurately determined using the "Distance-Amplitude Profile" (DAC) or "Time Baseline" (TBG) function. During this process, the operator must hold the probe firmly with one hand while operating the flaw detector's main unit switching function with the other. However, manually holding the probe results in poor stability, and the probe is prone to shifting during this operation, causing changes in the amplitude or position of the defect signal and affecting measurement accuracy. Utility Model Content

[0004] In view of the shortcomings of the existing technology, this utility model provides a detection device for boiler pipes, which allows the probe to be fixed at any position on the boiler pipe.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a detection device for boiler pipes, comprising a flaw detector main unit and a probe, wherein a set of hinge blocks are fixedly connected to the lower ends of both sides of the probe, an extension plate is rotatably connected between the two hinge blocks, a slot is provided on the side of the extension plate away from the probe, a connecting frame is slidably connected inside the slot, a wear-resistant plate is fixedly connected to the side of the connecting frame away from the extension plate, and a magnetic block is slidably connected to the middle position of the connecting frame.

[0006] Furthermore, a connecting plate is fixedly connected to one end of the connecting frame, and a rotating shaft is fixedly connected to both ends of the connecting plate. A pull rod is rotatably connected to the side of the connecting plate away from the connecting frame, and a rotating groove matching the rotating shaft is opened at both ends of the pull rod.

[0007] Furthermore, the top of the extension plate is provided with a placement groove that matches the pull rod.

[0008] Furthermore, the top of the extension plate is provided with a gripping groove, which is connected to the placement groove, and the middle position of the pull rod is provided with a gripping groove, which matches the gripping groove.

[0009] Furthermore, both ends of the pull rod are provided with slots, and the inner wall of the slot is fixed with an elastic block that matches the slot.

[0010] Furthermore, the end of the connecting frame that mates with the slot is T-shaped.

[0011] Compared with the prior art, the present invention has the following beneficial effects:

[0012] This type of detection device for boiler pipes only requires unfolding the extension plate to allow the magnetic block to fit against the boiler pipe when the probe needs to be fixed. The magnetic block will then adhere to the boiler pipe, thus fixing the probe to the boiler pipe. The fixing method is simple and easy to operate. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0014] Figure 2 This utility model Figure 1 A magnified schematic diagram of the local structure at point A;

[0015] Figure 3 This is a schematic diagram of the structure of the probe and magnetic block of this utility model when unfolded;

[0016] Figure 4 This utility model Figure 3 A magnified view of the structure at point B in the middle;

[0017] Figure 5 This is a structural schematic diagram of the extension plate of this utility model when viewed from below.

[0018] In the diagram: 1. Flaw detector main unit; 2. Probe; 3. Hinge block; 4. Extension plate; 5. Slot; 6. Connecting frame; 7. Magnetic block; 8. Wear-resistant plate; 9. Connecting plate; 10. Rotating shaft; 11. Pull rod; 12. Rotating groove; 13. Gripping groove; 14. Card slot; 15. Placement groove; 16. Grasping groove; 17. Elastic card block. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0020] Please see Figure 1-5A detection device for boiler pipes includes a flaw detector main unit 1 and a probe 2. A set of hinge blocks 3 are fixedly connected to the lower ends of both sides of the probe 2. An extension plate 4 is rotatably connected between the two hinge blocks 3. A slot 5 is opened on the side of the extension plate 4 away from the probe 2. A connecting frame 6 is slidably connected inside the slot 5. A wear-resistant plate 8 is fixedly connected to the side of the connecting frame 6 away from the extension plate 4. A magnetic block 7 is slidably connected to the middle position of the connecting frame 6.

[0021] The detection device for boiler pipes in this utility model, when a suspected defect signal is detected and it is necessary to fix the probe 2, simply unfold the extension plate 4 so that the magnetic block 7 fits against the boiler pipe. The magnetic block 7 will adhere to the alloy boiler pipe, thereby fixing the probe 2 to the boiler pipe. The fixing method is simple and easy to operate. After the probe 2 is fixed to the boiler pipe, the operator can operate the flaw detector main unit 1 with both hands, and the probe 2 is not easy to shift, so the measurement accuracy is not easily affected. At the same time, the wear-resistant plate 8 will protect the extension plate 4 and the magnetic block 7 to prevent damage to the extension plate 4 and the magnetic block 7. In addition, since the flaw detector main unit 1 and the probe 2 are existing mature products, they will not be described in detail here.

[0022] It is worth noting that the magnetic block 7 can be made of neodymium iron boron magnets, which have good corrosion resistance.

[0023] like Figure 3 , Figure 4 and Figure 5 As shown, a connecting plate 9 is fixedly connected to one end of the connecting frame 6, and a rotating shaft 10 is fixedly connected to both ends of the connecting plate 9. A pull rod 11 is rotatably connected to the side of the connecting plate 9 away from the connecting frame 6, and a rotating groove 12 matching the rotating shaft 10 is opened at both ends of the pull rod 11.

[0024] Specifically, during long-term use, especially in high-temperature environments, the magnetic force of the magnetic block 7 may weaken. In this case, the connecting frame 6 can be pulled out of the slot 5, the magnetic block 7 can be removed from the connecting frame 6, a new magnetic block 7 can be inserted, and the connecting frame 6 can be inserted into the slot 5. The whole replacement process is relatively simple and convenient. At the same time, it is more convenient to pull the connecting frame 6 by using the pull rod 11.

[0025] like Figure 4 As shown, the top of the extension plate 4 is provided with a placement groove 15, which matches the pull rod 11.

[0026] Specifically, when storing the probe 2, the pull rod 11 can be rotated to make the pull rod 11 sink into the placement groove 15. Then, the extension plate 4 can be rotated to make the extension plate 4 fit with the probe 2. Since the existing probe 2 housing is mainly made of ferromagnetic material, the magnetic block 7 will be attracted to the probe 2, making it convenient to store the probe 2.

[0027] like Figure 3 and Figure 4 As shown, the top of the extension plate 4 is provided with a gripping groove 16, which is connected to the placement groove 15. The middle position of the pull rod 11 is provided with a gripping groove 13, which matches the gripping groove 16.

[0028] Specifically, when it is necessary to pull the connecting frame 6 by means of the pull rod 11, the operator's fingers can be inserted from the gripping groove 16 into the gripping groove 13 of the pull rod 11 to remove the pull rod 11 from the placement groove 15 so that the connecting frame 6 can be moved by means of the pull rod 11.

[0029] like Figure 2 , Figure 4 and Figure 5 As shown, both ends of the pull rod 11 are provided with slots 14, and the inner wall of the placement groove 15 is fixed with an elastic block 17 that matches the slot 14.

[0030] Specifically, after the pull rod 11 is placed inside the placement slot 15, the elastic block 17 will be in the slot 14, thereby restricting the pull rod 11 and preventing the pull rod 11 from detaching from the extension plate 4.

[0031] like Figure 2 As shown, the end of the connecting frame 6 that mates with the slot 5 is T-shaped. The T-shaped connecting frame 6 is less likely to detach from the extension plate 4, allowing the connecting frame 6 to better restrain the magnetic block 7.

[0032] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention.

Claims

1. A testing device for boiler pipelines, comprising a flaw detector main unit (1) and a probe (2), characterized in that, A set of hinge blocks (3) are fixedly connected to the lower ends of both sides of the probe (2). An extension plate (4) is rotatably connected between the two hinge blocks (3). A slot (5) is opened on the side of the extension plate (4) away from the probe (2). A connecting frame (6) is slidably connected inside the slot (5). A wear-resistant plate (8) is fixedly connected on the side of the connecting frame (6) away from the extension plate (4). A magnetic block (7) is slidably connected in the middle of the connecting frame (6).

2. The detection device for boiler pipelines according to claim 1, characterized in that, One end of the connecting frame (6) is fixedly connected to a connecting plate (9), and both ends of the connecting plate (9) are fixedly connected to a rotating shaft (10). A pull rod (11) is rotatably connected to the side of the connecting plate (9) away from the connecting frame (6), and both ends of the pull rod (11) are provided with a rotating groove (12) that matches the rotating shaft (10).

3. The detection device for boiler pipelines according to claim 2, characterized in that, The top of the extension plate (4) is provided with a placement groove (15), which matches the pull rod (11).

4. The detection device for boiler pipelines according to claim 3, characterized in that, The top of the extension plate (4) is provided with a gripping groove (16), which is connected to the placement groove (15). The middle position of the pull rod (11) is provided with a gripping groove (13), which matches the gripping groove (16).

5. A detection device for boiler pipelines according to claim 3 or 4, characterized in that, Both ends of the pull rod (11) are provided with slots (14), and the inner wall of the placement groove (15) is fixed with an elastic block (17) that matches the slot (14).

6. A detection device for boiler pipelines according to claim 1, 2, 3 or 4, characterized in that, The end of the connecting frame (6) that mates with the slot (5) is T-shaped.

7. The detection device for boiler pipelines according to claim 5, characterized in that, The end of the connecting frame (6) that mates with the slot (5) is T-shaped.

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