Metal pipe crack detection device

Abstract

The utility model discloses a metal tube crack detection device, which comprises a fixed sleeve, a plurality of positioning plates and an adjusting mechanism for driving the plurality of positioning plates to be close to or far away from a metal tube, the plurality of positioning plates are positioned on the periphery of the metal tube to be detected, and the positioning plates are provided with probes; the adjusting mechanism comprises a threaded rod, a mounting column and an adjusting knob, the adjusting knob is fixed to the threaded rod, the threaded rod is in threaded connection with the mounting column, the threaded rod is rotationally connected to the positioning plate, the mounting column is mounted in the mounting hole of the fixed sleeve and can slide in the radial direction of the sleeve, and the adjusting knob is fixed to the threaded rod. A limiting plate is arranged on one side of the installation column, a limiting head is arranged on the other side of the installation column, the limiting plate and the limiting head are located on the inner side and the outer side of the fixing sleeve respectively, and the installation column is sleeved with a compression spring. According to the utility model, manual operation is facilitated, and the detection accuracy is ensured.

Description

Technical Field

[0001] The utility model belongs to the technical field of nondestructive testing, and particularly relates to a metal pipe crack detection device. Background Art

[0002] Nondestructive testing refers to the method of using the reaction changes of heat, sound, light, electricity, magnetism, etc. caused by abnormal internal structures or defects in materials on the premise of not damaging or affecting the service performance of the object to be detected and not harming the internal tissues of the object to be detected. The nondestructive testing method is widely used in the field of pipe testing.

[0003] Especially, metal pipes will be torn due to temperature and stress, resulting in cracks of uncertain sizes, thus affecting the quality of metal pipes. It is difficult to discover potential hazards through traditional detection methods, and the monitoring intensity is very limited. Once an accident occurs, the losses will be huge. Therefore, it is necessary to check the quality of metal pipes before installation to avoid affecting their use during operation. The existing metal pipe flaw detection equipment cannot be used for metal pipes with different diameters, which is inconvenient to use. During the detection process, workers hold the probe for a long time, resulting in an unstable distance between the probe and the metal pipe, thereby generating errors and affecting the detection effect. Summary of the Utility Model

[0004] The main technical problem to be solved by the utility model is to provide a metal pipe crack detection device, which is convenient for manual operation and can ensure the accuracy of detection at the same time.

[0005] To solve the above technical problem, a technical solution adopted by the utility model is: a metal pipe crack detection device, including a fixed sleeve, a plurality of positioning plates, and an adjusting mechanism for driving the plurality of positioning plates to approach or move away from the metal pipe. The plurality of positioning plates are located on the outer periphery of the metal pipe to be detected, and a probe is installed on the positioning plate.

[0006] The adjusting mechanism includes a threaded rod, a mounting column, and an adjusting knob. The adjusting knob is fixed to the threaded rod. The threaded rod is threadedly connected to the mounting column, and the threaded rod is rotatably connected to the positioning plate. The mounting column is installed in the mounting hole of the fixed sleeve, and the mounting column can slide along the radial direction of the sleeve. A limiting plate is provided on one side of the mounting column, and a limiting head is provided on the other side of the mounting column. The limiting plate and the limiting head are respectively located inside and outside the fixed sleeve. A compression spring is sleeved on the mounting column. The compression spring is located between the limiting head and the fixed sleeve to make the positioning plate closely adhere to the metal pipe. Place the metal pipe in the middle of the plurality of positioning plates, rotate the adjusting knob, and the adjusting knob drives the positioning plate to approach the metal pipe through the threaded rod. During detection, the positioning plate moves on the surface of the metal pipe, which is convenient for manual operation and can ensure the accuracy of detection at the same time.

[0007] Further, a plurality of mounting grooves are provided on one side of the positioning plate close to the metal pipe. A first ball and a second ball are arranged inside the mounting groove. The second ball is located between the first ball and the bottom surface of the mounting groove, and the first ball protrudes out of the mounting groove. The arrangement of the double balls facilitates the movement of the detection device along the surface of the metal pipe.

[0008] Further, a limiting convex ring is formed by the circumferential outward protrusion of the inner wall of the mounting groove to prevent the first ball from detaching from the mounting groove.

[0009] Further, the positioning plate is provided with a through hole for installing the probe. A screw passes through the positioning plate and abuts against the probe, making the disassembly or installation of the probe more convenient.

[0010] Further, the fixed sleeve includes two semi-circular first fixing rings and second fixing rings with the same structure. One end of the first fixing ring is rotatably connected to one end of the second fixing ring. The other end of the first fixing ring has a connecting piece, and a screw passes through the connecting piece and is connected to the second fixing ring, facilitating the sleeving of the fixed sleeve on the metal pipe to be detected.

[0011] Further, the probe is electrically connected to a data line, and the data line is electrically connected to a detector.

[0012] Further, the positioning plate is of an arc-shaped structure.

[0013] The beneficial effects of the present utility model at least include the following points:

[0014] The adjusting mechanism of the present utility model includes a threaded rod, a mounting post, and an adjusting knob. The adjusting knob is fixed to the threaded rod, the threaded rod is threadedly connected to the mounting post, and the threaded rod is rotatably connected to the positioning plate. The mounting post is installed in the mounting hole of the fixed sleeve. Place the metal pipe in the middle of several positioning plates, rotate the adjusting knob, and the adjusting knob drives the positioning plate to approach the metal pipe through the threaded rod. During detection, the positioning plate moves on the surface of the metal pipe, which is convenient for manual operation and ensures the accuracy of detection at the same time;

[0015] A limiting plate is provided on one side of the mounting post of the present utility model, and a limiting head is provided on the other side of the mounting post. The limiting plate and the limiting head are respectively located inside and outside the fixed sleeve. A compression spring is sleeved on the mounting post, and the compression spring is located between the limiting head and the fixed sleeve, preventing dimensional deviation of the metal pipe and making the positioning plate closely adhere to the metal pipe to ensure the detection effect;

[0016] A plurality of mounting grooves are provided on one side of the positioning plate of the present utility model close to the metal pipe. A first ball and a second ball are arranged inside the mounting groove. The second ball is located between the first ball and the bottom surface of the mounting groove, and the first ball protrudes out of the mounting groove. The arrangement of the double balls facilitates the movement of the detection device along the surface of the metal pipe;

[0017] The positioning plate of the present utility model is provided with a through hole for installing a probe, and a screw passes through the positioning plate and abuts against the probe, making the disassembly or installation of the probe more convenient;

[0018] The fixing sleeve of the present utility model includes two semi-circular first fixing rings and second fixing rings with the same structure. One end of the first fixing ring is rotatably connected to one end of the second fixing ring. The other end of the first fixing ring has a connecting piece, and a screw passes through the connecting piece and is connected to the second fixing ring, facilitating the fixing sleeve to be sleeved on the metal pipe to be detected. Description of the Drawings

[0019] Figure 1 is a schematic structural diagram of the present utility model;

[0020] Figure 2 is the Figure 1 enlarged view of part A of the present utility model;

[0021] Figure 3 is a schematic structural diagram of the first fixing ring and the second fixing ring of the present utility model;

[0022] Figure 4 is a schematic structural diagram of the threaded rod and the mounting post of the present utility model;

[0023] Figure 5 is a cross-sectional view of the positioning plate of the present utility model;

[0024] Figure 6 is the Figure 5 enlarged view of part B of the present utility model;

[0025] The marks of each part in the drawings are as follows:

[0026] 1. Fixing sleeve; 11. Mounting hole; 12. First fixing ring; 121. Connecting piece; 13. Second fixing ring; 14. Screw; 2. Positioning plate; 21. Mounting groove; 211. Limiting convex ring; 22. Through hole; 23. Screw; 3. Probe; 41. Threaded rod; 42. Mounting post; 421. Limiting plate; 422. Limiting head; 43. Adjusting knob; 44. Compression spring; 51. First ball; 52. Second ball; 6. Data line; 7. Detector. Detailed Embodiment

[0027] The following elaborates on the preferred embodiments of the present utility model in conjunction with the drawings, so that the advantages and features of the present utility model can be more easily understood by those skilled in the art, thereby making the protection scope of the present utility model more clearly defined.

[0028] Embodiment: A metal pipe crack detection device, as Figure 1As shown in the figure, it includes a fixed sleeve 1, several positioning plates 2, and an adjusting mechanism for driving the several positioning plates 2 to approach or move away from the metal pipe. The several positioning plates 2 are located on the outer periphery of the metal pipe to be detected, and a probe 3 is installed on the positioning plate 2;

[0029] As Figure 2 and Figure 4 shown in the figure, the adjusting mechanism includes a threaded rod 41, a mounting post 42, and an adjusting knob 43. The adjusting knob 43 is fixed to the threaded rod 41. The threaded rod 41 is threadedly connected to the mounting post 42, and the threaded rod 41 is rotatably connected to the positioning plate 2. The mounting post 42 is installed in the mounting hole 11 of the fixed sleeve 1, and the mounting post 42 can slide along the radial direction of the sleeve. A limiting plate 421 is provided on one side of the mounting post 42, and a limiting head 422 is provided on the other side of the mounting post 42. The limiting plate 421 and the limiting head 422 are respectively located on the inner and outer sides of the fixed sleeve 1. A compression spring 44 is sleeved on the mounting post 42. The compression spring 44 is located between the limiting head 422 and the fixed sleeve 1 to make the positioning plate 2 closely adhere to the metal pipe.

[0030] As Figure 5 and as Figure 6 shown in the figure, several mounting grooves 21 are provided on the side of the positioning plate 2 close to the metal pipe. A first ball 51 and a second ball 52 are provided inside the mounting groove 21. The second ball 52 is located between the first ball 51 and the bottom surface of the mounting groove 21, and the first ball 51 protrudes from the mounting groove 21.

[0031] The inner wall of the mounting groove 21 protrudes circumferentially outward to form a circumferential limiting rib 211 to prevent the first ball 51 from detaching from the mounting groove 21.

[0032] As Figure 5 shown in the figure, the positioning plate 2 is provided with a through hole 22 for installing the probe 3, and a screw 23 passes through the positioning plate 2 and abuts against the probe 3.

[0033] As Figure 3 shown in the figure, the fixed sleeve 1 includes two semi-circular first fixing rings 12 and second fixing rings 13 with the same structure. One end of the first fixing ring 12 is rotatably connected to one end of the second fixing ring 13. The other end of the first fixing ring 12 has a connecting piece 121, and a screw 14 passes through the connecting piece 121 and is connected to the second fixing ring 13;

[0034] During specific implementation, the way that one end of the first fixing ring is rotatably connected to one end of the second fixing ring is in the form of a pin shaft and a pin hole, which is prior art and will not be elaborated here.

[0035] The probe 3 is electrically connected to the data line 6, and the data line 6 is electrically connected to the detector 7. In this embodiment, the flaw detector and the probe can be ultrasonic flaw detectors.

[0036] The positioning plate 2 is an arc-shaped structure.

[0037] The working principle of the present invention is as follows: The first fixing ring and the second fixing ring are sleeved on the metal pipe to be detected. The screw passes through the connecting piece of the first fixing ring and is connected to the second fixing ring so that the first fixing ring and the second fixing ring are fixed to each other. Rotate the adjustment knob, and the adjustment knob drives the positioning plate to approach the metal pipe through the threaded rod. During detection, the positioning plate is moved on the surface of the metal pipe, which is convenient for manual operation and at the same time ensures the accuracy of detection.

[0038] The above are only the embodiments of the present invention, and do not limit the patent scope of the present invention accordingly. Any equivalent structural transformation made by using the specification and drawings of the present invention, or directly or indirectly applied in other related technical fields, shall be included in the patent protection scope of the present invention by the same token.

Claims

1. A metal pipe crack detection device, characterized in that: It includes a fixed sleeve (1), several positioning plates (2) and an adjusting mechanism for driving the several positioning plates to approach or move away from the metal pipe. The several positioning plates are located on the outer periphery of the metal pipe to be detected, and a probe (3) is installed on the positioning plate. The adjusting mechanism includes a threaded rod (41), a mounting post (42) and an adjusting knob (43). The adjusting knob is fixed to the threaded rod. The threaded rod is threadedly connected to the mounting post, and the threaded rod is rotatably connected to the positioning plate. The mounting post is installed in the mounting hole (11) of the fixed sleeve, and the mounting post can slide along the radial direction of the sleeve. A limiting plate (421) is provided on one side of the mounting post, and a limiting head (422) is provided on the other side of the mounting post. The limiting plate and the limiting head are respectively located on the inner and outer sides of the fixed sleeve. A compression spring (44) is sleeved on the mounting post, and the compression spring is located between the limiting head and the fixed sleeve to make the positioning plate closely adhere to the metal pipe.

2. The metal pipe crack detection device according to claim 1, characterized in that: Several mounting grooves (21) are provided on the side of the positioning plate close to the metal pipe. A first ball (51) and a second ball (52) are provided inside the mounting groove. The second ball is located between the first ball and the bottom surface of the mounting groove, and the first ball protrudes from the mounting groove.

3. The metal pipe crack detection device according to claim 2, wherein: The inner wall of the mounting groove protrudes circumferentially outward to form a circumferential limiting ring (211) to prevent the first ball from separating from the mounting groove.

4. The metal pipe crack detection device according to claim 1, wherein: The positioning plate is provided with a through hole (22) for installing the probe, and a screw (23) passes through the positioning plate and abuts against the probe.

5. The metal pipe crack detection device according to claim 1, characterized in that: The fixed sleeve includes two semi-circular first fixing rings (12) and second fixing rings (13) with the same structure. One end of the first fixing ring is rotatably connected to one end of the second fixing ring. The other end of the first fixing ring has a connecting piece (121), and a screw (14) passes through the connecting piece and is connected to the second fixing ring.

6. The metal pipe crack detection device according to claim 1, wherein: The probe is electrically connected to a data line (6), and the data line is electrically connected to a detector (7).

7. The metal pipe crack detection device according to claim 1, wherein: The positioning plate is of an arc-shaped structure.

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