A magnetic flux leakage detector heat dissipation structure

Abstract

The utility model discloses a magnetic flux leakage detector heat dissipation structure relates to the field of magnetic flux leakage detector, to solve the magnetic flux leakage detector in prior art generally does not set special heat dissipation structure, and the air flow of pipeline inside is poor, leads to the heat of equipment in the detection process to be unable effectively dissipated, long -term high temperature operation can accelerate the aging of electronic component, influence detection accuracy to shorten the service life of equipment problem. The magnetic flux leakage detector main part front end middle part fixedly connected with fixed link, the fixed link front end is connected with drive motor, drive motor output shaft front end fixedly connected with rotating shaft, rotating shaft is fixedly connected with spiral blade on, through spiral blade forced drive pipeline inside air flow, forms the active heat dissipation system, effectively solved the problem that traditional magnetic flux leakage detector is poor in heat dissipation in the closed pipeline, significantly reduced equipment operating temperature, prolonged the service life of electronic component.

Description

Technical Field

[0001] This utility model relates to the field of magnetic flux leakage detectors, specifically a heat dissipation structure for a magnetic flux leakage detector. Background Technology

[0002] A magnetic flux leakage detector (MFRCD) is a non-destructive testing device used to detect surface and near-surface defects in ferromagnetic materials. Its working principle is based on electromagnetic induction: when the object being tested (such as a steel pipe, tank bottom plate, or rail) is magnetized to saturation by a strong magnetic field, if defects such as cracks, corrosion, or holes exist in the material, the magnetic field lines will be distorted and leak out to the outside of the material at the defect, forming a magnetic flux leakage field. The detector captures these magnetic flux leakage signals using a highly sensitive magnetic sensor (such as a Hall element or magnetoresistive sensor), and after data processing, the defect can be located and its size and depth assessed.

[0003] For example, patent announcement number CN209727847U discloses an omnidirectional magnetic flux leakage detector, including a detector body. The detector body comprises a first detection section, a second detection section, a universal joint, a steel brush, a probe, and a drive cup. The first and second detection sections are fixedly connected to the universal joint by bolts. The guide post is fixedly connected inside the inner and outer ring cylinders by springs. This device, through the compression spring, guide groove, guide post, spring, and rubber cylinder, improves the stability of the roller during operation, provides good buffering and protection, effectively extends the service life of the roller, facilitates the elastic expansion and contraction of the support wheel assembly, and ensures the smooth and stable operation of the magnetic flux leakage detector body within the pipeline. This facilitates omnidirectional detection of the pipeline by the magnetic flux leakage detector body. The cooperation of the support, limiting post, and compression spring prevents excessive compression of the support wheel assembly, thus ensuring detection accuracy and effectively improving work efficiency.

[0004] However, existing magnetic flux leakage detectors generally do not have a dedicated heat dissipation structure, and the poor air circulation inside the pipes means that the heat generated during the detection process cannot be effectively dissipated. Long-term high-temperature operation will accelerate the aging of electronic components, affect detection accuracy, and shorten the service life of the equipment. Therefore, the market urgently needs to develop a heat dissipation structure for magnetic flux leakage detectors to help people solve the existing problems. Utility Model Content

[0005] The purpose of this invention is to provide a heat dissipation structure for a magnetic flux leakage detector, in order to solve the problem mentioned in the background art that magnetic flux leakage detectors generally do not have a dedicated heat dissipation structure, and the air circulation inside the pipe is poor, which causes the heat generated by the equipment during the detection process to be unable to be effectively dissipated. Long-term high-temperature operation will accelerate the aging of electronic components, affect the detection accuracy, and shorten the service life of the equipment.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a heat dissipation structure for a magnetic flux leakage detector, comprising a magnetic flux leakage detector body, a fixing rod fixedly connected to the middle of the front end of the magnetic flux leakage detector body, a drive motor connected to the front end of the fixing rod, a rotating shaft fixedly connected to the front end of the output shaft of the drive motor, a helical blade fixedly connected to the rotating shaft, a first support ring connected to the rear end of the outer side of the drive motor, a second support ring provided at the front end of the rotating shaft, four rotating seats fixedly connected in a ring array on the edge of the front end face of the second support ring, an L-shaped rotating frame rotatably connected to each rotating seat, and a roller rotatably connected to the front end of the L-shaped rotating frame.

[0007] Preferably, a first connecting plate is fixedly connected to the front end of the fixing rod, a connecting rod is fixedly connected to the middle of the rear end of the drive motor, and a second connecting plate is fixedly connected to the rear end of the connecting rod.

[0008] Preferably, the first connecting plate and the second connecting plate are fixedly connected by a plurality of bolts.

[0009] Preferably, the front end of the first support ring and the rear end of the second support ring are fixedly connected by a plurality of first support rods, and a limit ring is connected to the middle part inside the second support ring.

[0010] Preferably, the inner side of the first support ring is fixedly connected to the outer wall of the drive motor, and the inner side of the second support ring is fixedly connected to the outer wall of the limiting ring by four second support rods, and the front end of the rotating shaft is inserted into the limiting ring for rotational connection.

[0011] Preferably, the front ends of the four second support rods between the second support ring and the limiting ring are fixedly connected to a fixing plate on the inner side of each rotating seat.

[0012] Preferably, the outer end faces of the four fixed plates are fixedly connected to the inner end faces of the four L-shaped rotating frames by support springs.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] (1) In this utility model, the air flow in the pipe is forced by the spiral blades to form an active heat dissipation system, which effectively solves the problem of poor heat dissipation of traditional magnetic leakage detectors in closed pipes, significantly reduces the operating temperature of the equipment, and extends the service life of electronic components.

[0015] (2) In this utility model, a modular connection design is adopted. By disassembling multiple bolts, the drive motor can be separated from the main body of the magnetic flux leakage detector, which facilitates the disassembly of the heat dissipation mechanism from the main body of the magnetic flux leakage detector, and realizes the quick assembly and disassembly of the heat dissipation mechanism and the detector, which is convenient for maintenance.

[0016] (3) In this utility model, the drive motor and the rotating shaft are supported as a whole by a frame structure composed of a first support ring, a second support ring, and multiple first support rods. The rigid frame structure composed of the support ring and the support rods ensures the stability of the high-speed rotating components. Attached Figure Description

[0017] Figure 1 This is a front view of a heat dissipation structure for a magnetic flux leakage detector according to this utility model;

[0018] Figure 2 This is a side sectional view of the present invention;

[0019] Figure 3 This is a front sectional view of the helical blade of this utility model;

[0020] Figure 4 This is a detailed enlarged view of part A of this utility model.

[0021] In the diagram: 1. Main body of the magnetic flux leakage detector; 101. Fixing rod; 2. First connecting plate; 201. Bolt; 3. Drive motor; 301. Connecting rod; 302. Second connecting plate; 303. Rotating shaft; 304. Spiral blade; 4. First support ring; 401. Second support ring; 402. First support rod; 403. Limiting ring; 404. Second support rod; 405. Fixing plate; 406. Support spring; 5. Rotating seat; 501. L-shaped rotating frame; 502. Roller. Detailed Implementation

[0022] 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.

[0023] Please see Figure 1-4This utility model provides an embodiment of a magnetic flux leakage detector heat dissipation structure, including a magnetic flux leakage detector body 1. A fixing rod 101 is fixedly connected to the middle of the front end of the magnetic flux leakage detector body 1. A drive motor 3 is connected to the front end of the fixing rod 101. A rotating shaft 303 is fixedly connected to the front end of the output shaft of the drive motor 3. A spiral blade 304 is fixedly connected to the rotating shaft 303. A first connecting plate 2 is fixedly connected to the front end of the fixing rod 101. A connecting rod 301 is fixedly connected to the middle of the rear end of the drive motor 3. A second connecting plate 302 is fixedly connected to the rear end of the connecting rod 301. The first connecting plate 2 and... The second connecting discs 302 are fixedly connected by multiple bolts 201, which fixes the drive motor 3 to the magnetic flux leakage detector body 1. By removing the multiple bolts 201, the drive motor 3 can be separated from the magnetic flux leakage detector body 1, which facilitates the disassembly of the heat dissipation mechanism from the magnetic flux leakage detector body 1. When the magnetic flux leakage detector body 1 is detecting inside the pipe, the drive motor 3 drives the rotating shaft 303 and its spiral blades 304 to rotate. When the spiral blades 304 rotate, they drive the air inside the pipe to flow, and the flowing air dissipates heat from the magnetic flux leakage detector body 1.

[0024] Please see Figure 2 and Figure 3 A first support ring 4 is connected to the rear end of the drive motor 3, and a second support ring 401 is provided at the front end of the rotating shaft 303. The front end of the first support ring 4 and the rear end of the second support ring 401 are fixedly connected by multiple first support rods 402. A limit ring 403 is connected to the middle of the inside of the second support ring 401. The inner side of the first support ring 4 and the outer wall of the drive motor 3, as well as the inner side of the second support ring 401 and the outer wall of the limit ring 403, are fixedly connected by four second support rods 404. The front end of the rotating shaft 303 is inserted into the limit ring 403 for rotational connection. The limit ring 403 supports the front end of the rotating shaft 303, so that the rotation of the rotating shaft 303 remains stable. The frame structure composed of the first support ring 4, the second support ring 401, and multiple first support rods 402 provides overall support for the drive motor 3 and the rotating shaft 303.

[0025] Please see Figure 2 and Figure 4The front edge of the second support ring 401 is fixedly connected to four rotating seats 5 in a ring array. Each rotating seat 5 is rotatably connected to an L-shaped rotating frame 501. The front end of the L-shaped rotating frame 501 is rotatably connected to a roller 502. The front ends of the four second support rods 404 between the second support ring 401 and the limiting ring 403 are fixedly connected to a fixing plate 405 on the inner side of each rotating seat 5. The outer end face of the four fixing plates 405 is fixedly connected to the inner end face of the four L-shaped rotating frames 501 by a support spring 406. The inner end face of the L-shaped rotating frame 501 is supported by the support spring 406. When the entire heat dissipation structure enters the pipe, the rollers 502 on the four L-shaped rotating frames 501 fit against the inside of the pipe to support the heat dissipation structure.

[0026] Working Principle: In use, the heat dissipation structure is fixedly connected to the main body 1 of the magnetic flux leakage detector using bolts 201 and then placed inside the pipe to be tested. After the drive motor 3 starts, it drives the rotating shaft 303 and the spiral blades 304 to rotate at high speed, pushing the air in the pipe to form a directional airflow. When the airflow flows along the axial direction of the pipe, it passes over the surface of the main body 1 of the magnetic flux leakage detector and dissipates the heat generated by the main body 1 of the magnetic flux leakage detector through convection heat exchange. At the same time, the L-shaped rotating frame 501 supported by four springs adapts to the pipe wall through rollers 502. While ensuring that the heat dissipation structure is centered, its supporting springs 406 ensure that the rollers 502 are in contact with the inner wall of the pipe. The rigid frame formed by the limiting ring 403 and the multi-stage support rod system ensures the stability of the rotating shaft 303 during high-speed rotation, while the modular connection design allows the heat dissipation mechanism to be quickly disassembled and assembled, facilitating equipment maintenance.

[0027] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A heat dissipation structure for a magnetic flux leakage detector, comprising a magnetic flux leakage detector body (1), characterized in that: A fixed rod (101) is fixedly connected to the middle of the front end of the main body (1) of the magnetic flux leakage detector. A drive motor (3) is connected to the front end of the fixed rod (101). A rotating shaft (303) is fixedly connected to the front end of the output shaft of the drive motor (3). A spiral blade (304) is fixedly connected to the rotating shaft (303). A first support ring (4) is connected to the rear end of the outer side of the drive motor (3). A second support ring (401) is provided at the front end of the rotating shaft (303). Four rotating seats (5) are fixedly connected to the front edge of the second support ring (401) in a ring array. An L-shaped rotating frame (501) is rotatably connected to each of the rotating seats (5). A roller (502) is rotatably connected to the front end of the L-shaped rotating frame (501). The front end of the fixed rod (101) is fixedly connected to the first connecting plate (2), the middle of the rear end of the drive motor (3) is fixedly connected to the connecting rod (301), and the rear end of the connecting rod (301) is fixedly connected to the second connecting plate (302). The front end of the first support ring (4) and the rear end of the second support ring (401) are fixedly connected by a plurality of first support rods (402), and a limit ring (403) is connected to the middle part inside the second support ring (401).

2. The heat dissipation structure for a magnetic flux leakage detector according to claim 1, characterized in that: The first connecting plate (2) and the second connecting plate (302) are fixedly connected by multiple bolts (201).

3. The heat dissipation structure for a magnetic flux leakage detector according to claim 1, characterized in that: The inner side of the first support ring (4) and the outer wall of the drive motor (3) and the inner side of the second support ring (401) and the outer wall of the limiting ring (403) are fixedly connected by four second support rods (404), and the front end of the rotating shaft (303) is inserted into the limiting ring (403) for rotational connection.

4. The heat dissipation structure for a magnetic flux leakage detector according to claim 3, characterized in that: The front ends of the four second support rods (404) between the second support ring (401) and the limiting ring (403) are fixedly connected to a fixing plate (405) on the inner side of each rotating seat (5).

5. The heat dissipation structure for a magnetic flux leakage detector according to claim 4, characterized in that: The outer end faces of the four fixed plates (405) are respectively fixedly connected to the inner end faces of the four L-shaped rotating frames (501) by support springs (406).

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