Magnetic flux leakage detector

Abstract

The utility model belongs to the technical field of magnetic flux leakage detection, and particularly relates to a magnetic flux leakage detector which comprises two cross beam frames. A steam spraying pipe is fixed between the opposite faces of the two cross beam frames and located on the side, away from the detector, of the steam generator, two rows of steam spraying heads are installed at the bottom of the steam spraying pipe, and a supporting plate is welded between the opposite faces of the two cross beam frames and located below the steam generator; a cleaning assembly is installed at the top of the supporting plate and located below the steam generator. According to the magnetic flux leakage detector, steam generated by the steam generator is sprayed to the metal plate, the driving motor enables the cleaning bodies to rotate through the transmission assembly, oil absorption cloth on the cleaning bodies makes contact and friction with the surface of the metal plate, oil stains and dirt on the metal plate are cleaned, and meanwhile, the oil absorption cloth is driven by the driving motor to rotate. Residual oil stains and dirt on the metal plate are softened through high-temperature steam, so that the oil stains and the dirt are easier to remove, the cleaning effect on the metal plate is ensured, and the influence of the oil stains and the dirt on the detection effect of a subsequent detector is avoided.

Description

Technical Field

[0001] This utility model relates to the field of magnetic flux leakage detection technology, and in particular to a magnetic flux leakage detector. Background Technology

[0002] In the field of nondestructive testing (NDT) technology, magnetic flux leakage (MFL) testing is an important method widely used in assessing the integrity of metal structures. Based on the principle of magnetic flux, this technology applies an external magnetic field to the metal object being tested, observes and analyzes the leakage of the magnetic field, and thus detects internal defects in the metal, such as cracks, corrosion, and inclusions.

[0003] If there is grease or dirt on the metal surface, these deposits may interfere with the magnetic field interaction between the magnetic detector and the metal substrate. Non-magnetic substances such as grease and dirt can form a barrier, preventing magnetic lines of force from penetrating the metal surface normally. This weakens or masks the magnetic field leakage signal that should have been caused by the defect, increasing the complexity and uncertainty of the detection results. Utility Model Content

[0004] In order to overcome the defects of the prior art mentioned above, the inventors conducted in-depth research and, after a great deal of creative work, completed this utility model.

[0005] Specifically, the technical problem to be solved by this utility model is to provide a magnetic flux leakage detector to solve the technical problem that the presence of grease and dirt on the metal surface may interfere with the magnetic field interaction between the magnetic detector and the metal substrate.

[0006] To solve the above-mentioned technical problems, the present invention provides the following technical solution:

[0007] A magnetic flux leakage detector includes two crossbeams, with a horizontal shaft rotatably mounted on both sides of the opposite face of the two crossbeams. Both ends of the horizontal shaft are equipped with wheels. A push frame is hinged between one side of the two crossbeams. A display is mounted on the crossbeam mounting frame of the push frame. A detector is mounted on one side of the opposite face of the two crossbeams.

[0008] A steam generator has a jet pipe fixed between the two opposing surfaces of the crossbeams and on the side of the steam generator away from the detector. Two rows of steam nozzles are installed at the bottom of the jet pipe. A support plate is welded between the two opposing surfaces of the crossbeams and below the steam generator. A water tank is fixed on the top of the support plate and on the side of the steam generator closer to the detector. Connecting pipes are installed between the water inlet of the steam generator and the water outlet of the water tank, and between the air outlet of the steam generator and the air inlet at the top of the jet pipe. A cleaning component is installed on the top of the support plate and below the steam generator, and the top of the support plate has an inlet / outlet slot for the cleaning component to pass through.

[0009] As an improved technical solution, a steam generator frame is fixed between the tops of the two crossbeam frames, and a steam generator is installed on the top of the steam generator frame.

[0010] As an improved technical solution, the cleaning assembly includes two sets of electric telescopic rods installed on the top of the support plate and located at both ends of the inlet and outlet slots. Two horizontal connecting frames are fixedly connected between the movable ends of the two electric telescopic rods in the same set. A lifting plate is welded between the two electric telescopic rods. Multiple cleaning bodies are rotatably installed on the bottom of the lifting plate.

[0011] As an improved technical solution, the cleaning body includes a sleeve rotatably installed at the bottom of the lifting plate, a rotating plate frame is provided at the bottom of the sleeve, and an oil-absorbing cloth is detachably installed at the bottom of the rotating plate frame.

[0012] As an improved technical solution, a drive motor for driving a sleeve to rotate is fixedly installed in the middle of the top of the lifting plate, and the drive end of the drive motor is connected to the top end of the corresponding sleeve, and a transmission assembly is installed between the multiple sleeves.

[0013] As an improved technical solution, a T-shaped column is slidably installed on the sleeve through a sliding hole at its bottom end, and one end of the T-shaped column located outside the sleeve is connected to the rotating plate frame. A spring is sleeved on the vertical end of the T-shaped column between the opposite surfaces of the sleeve and the rotating plate frame.

[0014] As an improved technical solution, positioning blocks are fixed on both sides of the sliding hole inside the sleeve, and sliding tracks that slide with the positioning blocks are opened on both sides of the spring rod end.

[0015] After adopting the above technical solution, the beneficial effects of this utility model are:

[0016] 1. In this utility model, the steam generator produces steam which is sprayed onto a metal plate through a steam nozzle. The drive motor rotates multiple cleaning bodies through a transmission assembly, causing the oil-absorbing cloth on the cleaning body to come into contact with and rub against the surface of the metal plate, thus cleaning the oil and dirt on the metal plate. At the same time, the high-temperature steam softens the residual oil and dirt on the metal plate, making it easier to remove, ensuring the cleaning effect on the metal plate and thus preventing the oil and dirt from affecting the detection effect of the subsequent detector.

[0017] 2. In this utility model, the extension and retraction of the electric telescopic rod drives the cleaning body to rise and fall, allowing the oil-absorbing cloth to detach from the metal plate when cleaning is not required, thus protecting the oil-absorbing cloth and preventing it from constantly rubbing against the metal plate. Furthermore, the extension and retraction of the electric telescopic rod can also adjust the pressure between the oil-absorbing cloth and the metal plate, ensuring sufficient contact between the oil-absorbing cloth and the metal plate to improve the cleaning effect on the metal plate.

[0018] 3. In this utility model, when the electric telescopic rod drives the oil-absorbing cloth downward to contact the metal plate, the rotating plate frame will provide an upward thrust to the T-shaped column and compress the spring, so as to avoid the oil-absorbing cloth and the metal plate being in rigid contact, thereby improving the protection effect on the cleaning body, extending the service life of the device, and under the elastic action, the oil-absorbing cloth and the metal plate will also be tightly attached and in contact. Attached Figure Description

[0019] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. Among them:

[0020] Figure 1 This is a schematic diagram of the overall structure of a magnetic flux leakage detector according to this utility model.

[0021] Figure 2 This is a schematic diagram of the internal structure of the crossbeam frame of a magnetic flux leakage detector according to this utility model.

[0022] Figure 3 This is a bottom view of the jet pipe structure of a magnetic flux leakage detector according to this utility model.

[0023] Figure 4 This is a schematic diagram of the cleaning component of a magnetic flux leakage detector according to this utility model.

[0024] Figure 5 This is an exploded structural diagram of the cleaning body of a magnetic flux leakage detector according to this utility model.

[0025] Explanation of reference numerals in the attached figures:

[0026] 1. Crossbeam frame; 11. Push frame; 12. Display; 13. Horizontal axis; 14. Traveling wheels; 2. Detector; 3. Steam generator; 31. Steam generator frame; 32. Jet pipe; 33. Water tank; 34. Connecting pipe; 35. Support plate; 36. Cleaning assembly; 361. Electric telescopic rod; 362. Horizontal connecting frame; 363. Drive motor; 364. Lifting plate; 365. Cleaning body; 3651. Sleeve; 3652. Positioning block; 3653. T-shaped column; 3654. Rotating plate frame; 3655. Oil-absorbing cloth; 3656. Spring; 3657. Slide rail; 366. Transmission assembly; 37. Steam nozzle; 38. Inlet / outlet slot. Detailed Implementation

[0027] 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 of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0028] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in this utility model embodiment are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0029] Meanwhile, the meaning of "and / or" or "and / or" appearing throughout the text is that it includes three options. Taking "A and / or B" as an example, it includes option A, option B, or an option that satisfies both A and B.

[0030] Furthermore, in this utility model, descriptions involving "first," "second," etc., are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature. Additionally, the technical solutions of the various embodiments can be combined with each other, but only on the basis of being achievable by those skilled in the art. When the combination of technical solutions is contradictory or impossible to implement, such a combination of technical solutions should be considered non-existent and not within the scope of protection claimed by this utility model.

[0031] like Figures 1 to 5As shown in the figure, this embodiment provides a magnetic flux leakage detector. This magnetic flux leakage detector includes two crossbeam frames 1. A horizontal shaft 13 is rotatably mounted on both sides of the opposite face of the two crossbeam frames 1. A traveling wheel 14 is mounted on both ends of the horizontal shaft 13. A push frame 11 is hinged between one side of the two crossbeam frames 1. A display 12 is mounted on the crossbeam mounting frame of the push frame 11. A detector 2 is mounted on one side of the opposite face of the two crossbeam frames 1.

[0032] A steam generator 3 is installed between the tops of two crossbeams 1. A jet pipe 32 is fixed between the opposite faces of the two crossbeams 1 and on the side of the steam generator 3 away from the detector 2. Two rows of steam nozzles 37 are installed at the bottom of the jet pipe 32. A support plate 35 is welded between the opposite faces of the two crossbeams 1 and below the steam generator 3. A water tank 33 is fixed on the top of the support plate 35 and on the side of the steam generator 3 closer to the detector 2. A connecting pipe 34 is installed between the water inlet of the steam generator 3 and the water outlet of the water tank 33, and between the air outlet of the steam generator 3 and the air inlet of the top of the jet pipe 32. A cleaning component 36 is installed on the top of the support plate 35 and below the steam generator 3. An inlet / outlet slot 38 is provided on the top of the support plate 35 for the cleaning component 36 to pass through.

[0033] Steam generator 3 generates steam and delivers it to the inside of jet pipe 32. Finally, the steam is sprayed onto the metal plate through steam nozzle 37. Subsequently, drive motor 363 rotates multiple cleaning bodies 365 through transmission assembly 366, causing the oil-absorbing cloth 3655 on the cleaning body 365 to come into contact with and rub against the surface of the metal plate, cleaning the oil and dirt on the metal plate. At the same time, the high-temperature steam softens the residual oil and dirt on the metal plate, making it easier to remove, ensuring the cleaning effect on the metal plate, and thus preventing the oil and dirt from affecting the detection effect of the subsequent detector 2.

[0034] like Figures 1 to 2 As shown in the figure, in this embodiment, a steam generator frame 31 is fixed between the tops of the two crossbeam frames 1, and the steam generator 3 is installed on the top of the steam generator frame 31.

[0035] like Figure 1 , Figure 2 ,and Figure 4As shown in the figure, in this embodiment, the cleaning component 36 includes two sets of electric telescopic rods 361 installed on the top of the support plate 35 and located at both ends of the inlet / outlet slot 38. Two cross braces 362 are fixedly connected between the movable ends of the two electric telescopic rods 361 in the same set. A lifting plate 364 is welded between the two electric telescopic rods 361. Multiple cleaning bodies 365 are rotatably installed at the bottom of the lifting plate 364. The extension and retraction of the electric telescopic rods 361 will drive the cleaning bodies 365 to adjust their height. When cleaning is not required, the oil-absorbing cloth 3655 will be separated from the metal plate, which will protect the oil-absorbing cloth 3655 and prevent the oil-absorbing cloth 3655 from rubbing against the metal plate at all times. In addition, the extension and retraction of the electric telescopic rods 361 can also adjust the pressure between the oil-absorbing cloth 3655 and the metal plate, so that the oil-absorbing cloth 3655 can fully contact the metal plate to improve the cleaning effect on the metal plate.

[0036] like Figures 4 to 5 As shown in the figure, in this embodiment, the cleaning body 365 includes a sleeve 3651 rotatably mounted on the bottom of the lifting plate 364, a rotating plate frame 3654 is provided at the bottom of the sleeve 3651, and an oil-absorbing cloth 3655 is detachably mounted on the bottom of the rotating plate frame 3654.

[0037] like Figures 4 to 5 As shown in the figure, in this embodiment, a drive motor 363 for driving a sleeve 3651 to rotate is fixedly installed in the middle of the top of the lifting plate 364, and the drive end of the drive motor 363 is connected to the top of the corresponding sleeve 3651. A transmission assembly 366 is installed between multiple sleeves 3651. The transmission assembly 366 includes multiple synchronous pulleys, and a synchronous belt is installed between the multiple synchronous pulleys. The number of synchronous pulleys is the same as the number of cleaning bodies 365, and the synchronous pulleys are sleeved on the sleeves 3651.

[0038] like Figure 5 As shown, in this embodiment, a T-shaped post 3653 is slidably installed on the sleeve 3651 through a sliding hole at its bottom end. One end of the T-shaped post 3653 located outside the sleeve 3651 is connected to the rotating plate frame 3654. A spring 3656 is sleeved on the vertical end of the T-shaped post 3653 between the opposing surfaces of the sleeve 3651 and the rotating plate frame 3654. When the electric telescopic rod 361 drives the oil-absorbing cloth 3655 downward to contact the metal plate, the rotating plate frame 3654 will provide an upward thrust to the T-shaped post 3653 and compress the spring 3656, avoiding rigid contact between the oil-absorbing cloth 3655 and the metal plate. This improves the protection effect on the cleaning body 365 and extends the service life of the device. Furthermore, under the elastic action of 3655, the oil-absorbing cloth 3655 will also be tightly attached to and in contact with the metal plate.

[0039] like Figure 5As shown, in this embodiment, positioning blocks 3652 are fixed on both sides of the sliding hole inside the sleeve 3651, and sliding tracks 3657 that slide with the positioning blocks 3652 are opened on both sides of the vertical rod end of the spring 3656. The positioning blocks 3652 are engaged with the sliding tracks 3657, and the rotation of the sleeve 3651 will also drive the rotating plate frame 3654 to rotate.

[0040] In use, the hand-held pusher 11 pushes the crossbeam frame 1 to move. The detector 2 performs magnetic leakage detection on the metal plate it passes along the direction of the detector. Before the detector 2 detects the metal plate, the steam generator 3 pumps water from the inside of the water tank 33. The steam generator 3 generates steam and delivers it to the inside of the jet pipe 32. Finally, the steam is sprayed onto the metal plate through the steam nozzle 37. Then, the drive motor 363 rotates multiple cleaning bodies 365 through the transmission component 366, so that the oil-absorbing cloth 3655 on the cleaning body 365 contacts and rubs against the surface of the metal plate to clean the oil and dirt on the metal plate.

[0041] The extension and retraction of the electric telescopic rod 361 drives the cleaning body 365 to rise and fall, allowing the oil-absorbing cloth 3655 to detach from the metal plate when cleaning is not required, thus protecting the oil-absorbing cloth 3655. Furthermore, the extension and retraction of the electric telescopic rod 361 can also adjust the pressure between the oil-absorbing cloth 3655 and the metal plate, ensuring sufficient contact between the oil-absorbing cloth 3655 and the metal plate to improve the cleaning effect on the metal plate.

[0042] It should be understood that these embodiments are for illustrative purposes only and are not intended to limit the scope of protection of this utility model. Furthermore, it should be understood that after reading the technical description of this utility model, those skilled in the art can make various alterations, modifications, and / or variations to this utility model, and all such equivalent forms also fall within the scope of protection defined by the appended claims.

Claims

1. A magnetic flux leakage detector, characterized in that: It includes two crossbeam frames (1), and a horizontal shaft (13) is rotatably installed on both sides of the opposite face of the two crossbeam frames (1). Both ends of the horizontal shaft (13) are equipped with a traveling wheel (14). A push frame (11) is hinged between one side of the two crossbeam frames (1). A display (12) is installed on the crossbeam mounting frame of the push frame (11). A detector (2) is installed on one side of the opposite face of the two crossbeam frames (1). A steam generator (3) is provided with a jet pipe (32) fixed between the two opposing surfaces of the two beam frames (1) and on the side of the steam generator (3) away from the detector (2). Two rows of steam nozzles (37) are installed at the bottom of the jet pipe (32). A support plate (35) is welded between the two opposing surfaces of the two beam frames (1) and below the steam generator (3). A water tank (33) is fixed at the top of the support plate (35) and on the side of the steam generator (3) near the detector (2). A connecting pipe (34) is installed between the water inlet of the steam generator (3) and the water outlet of the water tank (33) and between the air outlet of the steam generator (3) and the air inlet at the top of the jet pipe (32). A cleaning component (36) is installed at the top of the support plate (35) and below the steam generator (3). An inlet and outlet slot (38) for the cleaning component (36) to pass through is provided at the top of the support plate (35).

2. The magnetic flux leakage detector according to claim 1, characterized in that: A steam generator frame (31) is fixed between the tops of the two beam frames (1), and a steam generator (3) is mounted on the top of the steam generator frame (31).

3. A magnetic flux leakage detector according to claim 2, characterized in that: The cleaning assembly (36) includes two sets of electric telescopic rods (361) installed on the top of the support plate (35) and located at both ends of the inlet / outlet slot (38). Two cross braces (362) are fixedly connected between the movable ends of the two electric telescopic rods (361) in the same set. A lifting plate (364) is welded between the two electric telescopic rods (361). Multiple cleaning bodies (365) are rotatably installed on the bottom of the lifting plate (364).

4. A magnetic flux leakage detector according to claim 3, characterized in that: The cleaning body (365) includes a sleeve (3651) rotatably mounted on the bottom of the lifting plate (364), and a rotating plate frame (3654) is provided at the bottom of the sleeve (3651). An oil-absorbing cloth (3655) is detachably mounted on the bottom of the rotating plate frame (3654).

5. A magnetic flux leakage detector according to claim 4, characterized in that: A drive motor (363) for driving a sleeve (3651) to rotate is fixedly installed in the middle of the top of the lifting plate (364), and the drive end of the drive motor (363) is connected to the top of the corresponding sleeve (3651). A transmission assembly (366) is installed between the multiple sleeves (3651).

6. A magnetic flux leakage detector according to claim 5, characterized in that: The sleeve (3651) is slidably fitted with a T-shaped post (3653) through a sliding hole at its bottom end, and one end of the T-shaped post (3653) located outside the sleeve (3651) is connected to the rotating plate frame (3654). A spring (3656) is sleeved on the vertical end of the T-shaped post (3653) between the opposite surfaces of the sleeve (3651) and the rotating plate frame (3654).

7. A magnetic flux leakage detector according to claim 6, characterized in that: Positioning blocks (3652) are fixed on both sides of the sliding hole inside the sleeve (3651), and sliding tracks (3657) that slide with the positioning blocks (3652) are opened on both sides of the vertical rod end of the spring (3656).

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