Magnetic flux leakage probe structure and detector in pipeline

Abstract

The utility model relates to a magnetic flux leakage probe structure and a detector in a pipeline, and belongs to the technical field of magnetic flux leakage detection, and the magnetic flux leakage probe structure comprises a supporting assembly which extends along the length direction; the magnetic conduction assembly is arranged on the supporting assembly, and the magnetic conduction assembly is arranged around the supporting assembly; the magnet assembly is arranged on the magnetic conduction assembly, the magnet assembly is arranged around the supporting assembly, and the magnet assembly is used for generating a magnetic field; the magnetic flux leakage probe assembly is arranged on the supporting assembly and / or the magnetic conduction assembly, the magnetic flux leakage probe assembly is arranged around the supporting assembly, and the magnetic flux leakage probe assembly is used for collecting the magnetic field generated by the magnet assembly. According to the magnetic flux leakage probe structure disclosed by the invention, through the cooperative design of the magnetic conductive assembly and the surrounding type magnet assembly, the distribution of a magnetic field in the circumferential direction of the pipeline is enhanced, and the defect detection coverage range is widened. By means of the design, the magnetic field coverage range can be effectively enlarged, and comprehensive and accurate detection of pipeline defects is achieved.

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 probe structure and a detector inside a pipeline. Background Technology

[0002] Magnetic flux leakage (MFL) testing technology is widely used for defect detection in metal pipes due to its high efficiency and reliability. Existing MFL testing technologies generally consist of a magnet and a MFL sensor, with the sensor detecting the magnetic field generated by the magnet. During pipe defect detection, if a defect is present in the pipe, the magnetic field generated by the magnet will change; for example, the magnetic permeability will decrease. However, existing MFL probe structures are not precise or comprehensive enough for detecting pipe defects, and their ability to detect pipes with greater thickness is limited. Utility Model Content

[0003] Therefore, it is necessary to provide a magnetic flux leakage probe structure and an in-pipe detector to address the problems that existing magnetic flux leakage probe structures are not accurate or comprehensive enough in detecting pipeline defects and that their detection capability is limited for pipelines with larger thicknesses.

[0004] A magnetic flux leakage probe structure includes: a support assembly extending along its length; a magnetically conductive assembly disposed on the support assembly and surrounding the support assembly; a magnet assembly disposed on the magnetically conductive assembly and surrounding the support assembly, the magnet assembly being used to generate a magnetic field; and a magnetic flux leakage probe assembly disposed on the support assembly and / or the magnetically conductive assembly, the magnetic flux leakage probe assembly surrounding the support assembly, the magnetic flux leakage probe assembly being used to collect the magnetic field generated by the magnet assembly.

[0005] The first aspect of this application discloses a magnetic flux leakage probe structure. Through the combined design of a magnetically conductive component and a surrounding magnet component, the distribution of the magnetic field circumferentially in the pipe is enhanced, improving the detection coverage of defects. This design effectively increases the magnetic field coverage, enabling 360-degree detection of the pipe without blind spots, achieving comprehensive and accurate detection of pipe defects. Its detection capability is not significantly limited even when inspecting pipes with greater thickness. The magnetically conductive component facilitates magnetic field diffusion, optimizing diffusion efficiency and ensuring effective penetration of the pipe wall while reducing magnetic signal attenuation. The magnetic flux leakage probe component collects the magnetic field signal generated by the magnet, processes it through a series of signal steps such as amplification and filtering, and then transmits it to a computer for subsequent analysis, thereby enabling the identification and analysis of defects within the tested pipe. For example, a decrease in magnetic permeability indicates a defect at the corresponding location in the pipe. The supporting component integrates the magnetically conductive component, magnet component, and probe component, forming a compact surrounding layout, ensuring simultaneous magnetic field signal acquisition and structural stability.

[0006] In one embodiment, there are multiple magnetically conductive components, each disposed on the support component and arranged sequentially along the length of the support component. There are also multiple magnet components, the number of which is the same as the number of magnetically conductive components, and each magnet component is correspondingly disposed on a magnetically conductive component. The arrangement of multiple magnetically conductive and magnet components increases the coverage of the magnetic field along the pipe axis, reduces detection blind spots, and improves the ability to identify long-distance defects, effectively enhancing defect detection performance. The collaborative work of multiple sets of magnet and magnetically conductive components improves the density and continuity of magnetic field signal acquisition, providing more complete data for defect localization.

[0007] In one embodiment, the magnetic flux leakage probe assembly is located among the plurality of magnet assemblies. By positioning the magnetic flux leakage probe assembly among the plurality of magnet assemblies, the magnetic field signal of the superimposed or transitional region between two adjacent magnet assemblies can be directly acquired, improving the magnetic field acquisition effect and facilitating the timely detection of pipeline defects through changes in the magnetic field, resulting in more comprehensive and accurate identification of pipeline defects.

[0008] In one embodiment, multiple magnetically conductive components are arranged opposite to each other. This arrangement improves the uniformity of the circumferential magnetic field around the pipe and reduces blind spots in detection. The opposite arrangement also helps maintain the overall balance of the product, ensuring stability during movement within the pipe.

[0009] In one embodiment, a plurality of the magnetically conductive components are sleeved on the support component. By sleeved on the support component, the magnetically conductive components and the support component form a tight fit, ensuring that the relative positions of each component are fixed during the detection process and avoiding displacement caused by vibration or movement.

[0010] In one embodiment, there are two magnetic conductive components and two magnet components, with each magnet component corresponding to the magnetic conductive component. The magnetic leakage probe component is located between the two magnet components. By positioning the magnetic leakage probe between the two magnets, magnetic signals can be collected more effectively, enhancing the ability to identify pipeline defects.

[0011] In one embodiment, the magnetic flux leakage probe assembly includes multiple magnetic flux leakage probe units, all of which are disposed on the support assembly and spaced circumferentially along the support assembly. Each of the multiple magnetic flux leakage probe units is used to collect the magnetic field generated by the magnet assembly. By arranging multiple magnetic flux leakage probe units circumferentially along the support assembly, such as multiple magnetic flux leakage probes being evenly distributed circumferentially, 360-degree detection of the pipe's inner wall is achieved, avoiding missed detections and making the detection more comprehensive and accurate. This design increases the density of circumferential magnetic flux leakage probe units, allowing for the acquisition of finer magnetic field distribution data and improving the ability to identify small-sized defects. Moreover, the collaborative operation of multiple probe units ensures that basic detection functions are maintained even if a single unit fails, enhancing system reliability.

[0012] In one embodiment, the magnetic flux leakage probe unit includes a support structure, a triaxial Hall sensor, an eddy current sensor, and a microcontroller. The support structure is mounted on the support assembly, and the triaxial Hall sensor, eddy current sensor, and microcontroller are all mounted on the support structure. Both the triaxial Hall sensor and the eddy current sensor are electrically connected to the microcontroller. Through the coordinated operation of the triaxial Hall sensor and the eddy current sensor, magnetic field strength and eddy current signals are simultaneously acquired, enabling a multi-dimensional comprehensive judgment of pipeline defects. The electrical connection between the triaxial Hall sensor and the eddy current sensor and the microcontroller enables real-time signal processing and transmission, resulting in a fast response speed. A single microcontroller can acquire and transmit data from multiple Hall sensor chips.

[0013] In one embodiment, the number of triaxial Hall sensors is 4-8, all of which are electrically connected to the microcontroller. By using 4-8 triaxial Hall sensors, each electrically connected to the microcontroller, one microcontroller can collect and transmit data from 4-8 Hall sensor chips. Furthermore, using multiple triaxial Hall sensors effectively improves the ability to collect magnetic fields, making the detection of pipeline defects more comprehensive and accurate.

[0014] In one embodiment, the support structure includes a support base, a first support block, a second support block, an elastic element, and a support housing. The support base is disposed on the support assembly. The first and second support blocks are both disposed on the support base and are rotatable relative to the support base. The first and second support blocks are arranged adjacent to each other. The two ends of the elastic element are respectively connected to the first and second support blocks. The support housing is disposed on the first and / or second support blocks. The triaxial Hall sensor, the eddy current sensor, and the microcontroller are all disposed on the support housing. The first and second support blocks provide stable support for the support housing. The sensor and microcontroller are centrally mounted in the support housing, forming a compact functional unit that facilitates maintenance and replacement. The first and second support blocks can rotate relative to the support base, thus adapting to the inspection of pipes of different sizes.

[0015] In one embodiment, the magnet assembly includes multiple magnet units, each disposed on the magnetically conductive assembly. The multiple magnet units are spaced circumferentially along the magnetically conductive assembly and surround the support assembly. By arranging multiple magnet units circumferentially along the magnetically conductive assembly, the magnetic field coverage becomes more comprehensive, resulting in more complete and accurate detection of pipeline defects.

[0016] In one embodiment, the magnetically conductive assembly includes a first support plate, a second support plate, and a magnetically conductive brush. The first support plate is disposed on the support assembly, and the magnet assembly is disposed on the first support plate and / or the second support plate, with the magnet assembly located between the first and second support plates. The magnetically conductive brush is disposed on the second support plate. The magnet assembly's location between the first and second support plates improves its stability and reliability. The magnetically conductive brush facilitates magnetic circuit transmission, which is beneficial for detecting pipeline defects.

[0017] In one embodiment, a hub assembly is further included, disposed on the support assembly and adjacent to the magnetic flux leakage probe assembly. The magnetic flux leakage probe assembly includes multiple magnetic flux leakage probe units, all disposed on the support assembly, and each probe unit is electrically connected to the hub assembly. The hub assembly allows the wires of multiple probe units to be integrated, avoiding wiring clutter. This design enables the magnetic flux leakage probe assembly to detect magnetic flux leakage signals and transmit them through the hub assembly, improving data transmission efficiency.

[0018] In one embodiment, the hub assembly includes multiple hub modules, each disposed on the support assembly and spaced circumferentially along the support assembly. Each hub module is electrically connected to one or more magnetic flux leakage probe units. By distributing multiple hub modules circumferentially along the support assembly, the wires of one or more magnetic flux leakage probe units can be integrated and managed separately, avoiding wiring chaos and improving the maintainability of the overall structure. Furthermore, the arrangement of multiple hub modules ensures that even if a single module fails, the remaining modules can still maintain some detection functionality, improving system reliability.

[0019] In one embodiment, the magnetic flux leakage probe unit includes a microcontroller electrically connected to the hub assembly. Through this connection, the sensor data acquired by the microcontroller can be promptly transmitted to the hub assembly and then from there to other components such as circuit boards.

[0020] In one embodiment, a circuit board is also included, which is electrically connected to the hub assembly. This electrical connection between the circuit board and the hub assembly allows data collected by the hub assembly to be promptly transmitted to the circuit board for further processing and transmission.

[0021] A pipe detector includes the above-described magnetic flux leakage probe structure.

[0022] The second aspect of this application discloses an in-pipe detector that enhances the distribution of the magnetic field circumferentially in the pipe through the combined design of a magnetically conductive component and a surrounding magnet component, thereby improving the detection coverage of defects. This design effectively improves the magnetic field coverage, enabling 360-degree detection of the pipe without blind spots, achieving comprehensive and accurate detection of pipe defects. By incorporating the aforementioned magnetic leakage probe structure, it fully inherits all the functions of magnetic field generation, magnetic field signal acquisition, and pipe defect identification. Attached Figure Description

[0023] Figure 1 A first perspective view of a magnetic flux leakage probe structure according to an embodiment;

[0024] Figure 2 A second perspective view of a magnetic flux leakage probe structure according to an embodiment;

[0025] Figure 3 This is a first exploded view of a magnetic flux leakage probe structure according to an embodiment;

[0026] Figure 4 This is a second exploded view of a magnetic flux leakage probe structure according to one embodiment;

[0027] Figure 5 These are perspective views of the magnetic flux leakage probe structures of the two embodiments;

[0028] Figure 6 The first 3D view of the magnetic flux leakage probe assembly;

[0029] Figure 7 This is a second perspective view of the magnetic flux leakage probe assembly;

[0030] Figure 8 This is an exploded view of the magnetic flux leakage probe assembly.

[0031] Figure 9 This is a 3D view of the magnetic flux leakage probe unit;

[0032] Figure 10 This is an exploded view of the magnetic flux leakage probe unit;

[0033] Figure 11 A three-dimensional view of the magnetic conductive component and the magnet component;

[0034] Figure 12 Exploded view of the magnetic conductive assembly and the magnet assembly;

[0035] Figure 13 This is a 3D view of the magnet assembly;

[0036] Figure 14 This is a 3D view of the magnetic conductive component;

[0037] Figure 15 A 3D view of the hub assembly;

[0038] Figure 16 This is a 3D view of the hub module;

[0039] Figure 17 This is a 3D view of the detector inside the pipeline.

[0040] The correspondence between the reference numerals and the component names is as follows:

[0041] 1. Supporting components;

[0042] 2. Magnetic conductive assembly; 21. First support plate; 22. Second support plate; 23. Magnetic conductive steel brush;

[0043] 3 magnet components, 31 magnet units;

[0044] 4. Magnetic leakage probe assembly, 41. Magnetic leakage probe unit, 411. Support structure, 4111. Support base, 4112. First support block, 4113. Second support block, 4114. Elastic element, 4115. Support box.

[0045] 5-hub assembly, 51-hub module;

[0046] 100 leakage magnetic probe structure. Detailed Implementation

[0047] To better understand the above-mentioned objectives, features, and advantages of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0048] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the scope of protection of the present invention is not limited to the specific embodiments disclosed below.

[0049] Example 1

[0050] like Figure 1-16 As shown, this embodiment discloses a magnetic flux leakage probe structure, including: a support component 1 extending along its length; a magnetic conductive component 2 disposed on the support component 1 and surrounding the support component 1; a magnet component 3 disposed on the magnetic conductive component 2 and surrounding the support component 1, the magnet component 3 being used to generate a magnetic field; and a magnetic flux leakage probe component 4 disposed on the support component 1 and / or the magnetic conductive component 2, the magnetic flux leakage probe component 4 surrounding the support component 1, the magnetic flux leakage probe component 4 being used to collect the magnetic field generated by the magnet component 3.

[0051] The first aspect of this application discloses a magnetic flux leakage probe structure. Through the coordinated design of the magnetic conductive component 2 and the surrounding magnet component 3, the distribution of the magnetic field in the circumferential direction of the pipe is enhanced, improving the detection coverage of defects. This design effectively improves the magnetic field coverage, enabling 360-degree detection of the pipe without blind spots, achieving comprehensive and accurate detection of pipe defects. Its detection capability is not significantly limited even when inspecting pipes with greater thickness. The placement of the magnetic conductive component 2 facilitates magnetic field diffusion, optimizes magnetic field diffusion efficiency, ensures effective penetration of the pipe wall, and reduces magnetic signal attenuation. The placement of the magnetic flux leakage probe component 4 allows for the acquisition of the magnetic field signal generated by the magnet. After a series of signal processing steps, such as amplification and filtering, the signal is transmitted to a computer for subsequent analysis, thereby enabling the identification and analysis of defects within the tested pipe. For example, a decrease in the magnetic permeability of the magnetic field can indicate a defect at the corresponding location in the pipe. The supporting component 1 integrates the magnetic conductive component 2, the magnet component 3, and the probe component, forming a compact surrounding layout, ensuring that magnetic field signal acquisition and structural stability are achieved simultaneously.

[0052] like Figure 1-5As shown, in addition to the features of the above embodiments, this embodiment further specifies that: the number of magnetically conductive components 2 is multiple, all of which are disposed on the support component 1, and the multiple magnetically conductive components 2 are arranged sequentially along the length direction of the support component 1; the number of magnet components 3 is multiple, the number of magnet components 3 is the same as the number of magnetically conductive components 2, and the magnet components 3 are arranged one-to-one on the magnetically conductive components 2. The arrangement of multiple magnetically conductive components 2 and multiple magnet components 3 increases the coverage of the magnetic field along the pipe axis, reduces detection blind spots, improves the ability to identify long-distance defects, and effectively improves the defect detection effect. Through the coordinated work of multiple sets of magnet components 3 and magnetically conductive components 2, the density and continuity of magnetic field signal acquisition are improved, providing more complete data for defect localization.

[0053] like Figure 1-5 As shown, in addition to the features of the above embodiments, this embodiment further specifies that the magnetic flux leakage probe assembly 4 is located between the plurality of magnet assemblies 3. By positioning the magnetic flux leakage probe assembly 4 between the plurality of magnet assemblies 3, the magnetic field signal of the superimposed or transitional region between two adjacent magnet assemblies 3 can be directly collected, improving the magnetic field acquisition effect and facilitating the timely detection of pipeline defects through changes in the magnetic field, resulting in more comprehensive and accurate identification of pipeline defects.

[0054] like Figure 1-5 As shown, in addition to the features of the above embodiments, this embodiment further specifies that: a plurality of magnetically conductive components 2 are arranged opposite to each other. By arranging a plurality of magnetically conductive components 2 opposite to each other, the uniformity of the circumferential magnetic field of the pipeline can be improved, and blind spots in detection can be reduced. The opposite arrangement helps maintain the overall balance of the product and ensures stability when moving within the pipeline.

[0055] like Figure 1-5 As shown, in addition to the features of the above embodiments, this embodiment further specifies that: a plurality of magnetically conductive components 2 are sleeved on the support component 1. By sleeved on the support component 1, the magnetically conductive components 2 and the support component 1 form a tight fit, ensuring that the relative positions of each component are fixed during the detection process and avoiding displacement caused by vibration or movement.

[0056] like Figure 1-5 As shown, in addition to the features of the above embodiments, this embodiment further specifies that: the number of the magnetic conductive component 2 and the number of the magnet component 3 are both two, and the magnet component 3 is arranged one-to-one on the magnetic conductive component 2, and the magnetic leakage probe component 4 is located between the two magnet components 3. By positioning the magnetic leakage probe between the two magnets, magnetic signals can be collected more effectively, enhancing the ability to identify pipeline defects.

[0057] like Figure 6-8As shown, in addition to the features of the above embodiments, this embodiment further specifies that: the magnetic flux leakage probe assembly 4 includes multiple magnetic flux leakage probe units 41, all of which are disposed on the support assembly 1 and spaced circumferentially along the support assembly 1. Each of the multiple magnetic flux leakage probe units 41 is used to collect the magnetic field generated by the magnet assembly 3. By arranging multiple magnetic flux leakage probe units 41 circumferentially along the support assembly 1, for example, by uniformly distributing multiple magnetic flux leakage probes circumferentially, 360-degree detection of the inner wall of the pipe can be achieved, avoiding missed detections and making the detection more comprehensive and accurate. This design increases the density of the circumferential magnetic flux leakage probe units 41, allowing for the acquisition of finer magnetic field distribution data and improving the ability to identify small-sized defects. Moreover, the collaborative operation of multiple probe units ensures that even if a single unit fails, basic detection functions can still be maintained, enhancing system reliability.

[0058] like Figure 6-10 As shown, in addition to the features of the above embodiments, this embodiment further specifies that: the magnetic flux leakage probe unit 41 includes a support structure 411, a triaxial Hall sensor, an eddy current sensor, and a microcontroller. The support structure 411 is disposed on the support assembly 1. The triaxial Hall sensor, the eddy current sensor, and the microcontroller are all disposed on the support structure 411. The triaxial Hall sensor and the eddy current sensor are both electrically connected to the microcontroller. Through the coordinated operation of the triaxial Hall sensor and the eddy current sensor, magnetic field strength and eddy current signals are simultaneously acquired, enabling multi-dimensional comprehensive judgment of pipeline defects. Since both the triaxial Hall sensor and the eddy current sensor are electrically connected to the microcontroller, real-time signal processing and transmission are achieved, resulting in a fast response speed. One microcontroller can acquire and transmit data from multiple Hall sensor chips.

[0059] In addition to the features of the above embodiments, this embodiment further specifies that the number of triaxial Hall sensors is 4-8, and all of them are electrically connected to the microcontroller. By having 4-8 triaxial Hall sensors, all electrically connected to the microcontroller, one microcontroller can collect and transmit data from 4-8 Hall sensor chips. Furthermore, setting multiple triaxial Hall sensors can effectively improve the ability to collect magnetic fields, making the detection of pipeline defects more comprehensive and accurate.

[0060] like Figure 9 and Figure 10As shown, in addition to the features of the above embodiments, this embodiment further defines: the support structure 411 includes a support base 4111, a first support block 4112, a second support block 4113, an elastic element 4114, and a support box 4115. The support base 4111 is disposed on the support assembly 1. The first support block 4112 and the second support block 4113 are both disposed on the support base 4111. The first support block 4112 and the second support block 4113 are rotatable relative to the support base 4111. The first support block 4112 and the second support block 4113 are disposed adjacent to each other. The two ends of the elastic element 4114 are respectively connected to the first support block 4112 and the second support block 4113. The support box 4115 is disposed on the first support block 4112 and / or the second support block 4113. The triaxial Hall sensor, the eddy current sensor, and the microcontroller are all disposed on the support box 4115. The first support block 4112 and the second support block 4113 provide stable support for the support box 4115. The support box 4115 centrally houses the sensor and microcontroller, forming a compact functional unit that facilitates maintenance and replacement. The first support block 4112 and the second support block 4113 can rotate relative to the support base, thus adapting to the inspection of pipes of different sizes.

[0061] like Figure 11-13 As shown, in addition to the features of the above embodiments, this embodiment further specifies that: the magnet assembly 3 includes multiple magnet units 31, all of which are disposed on the magnetic conductive assembly 2. The multiple magnet units 31 are spaced apart circumferentially along the magnetic conductive assembly 2 and surround the support assembly 1. By arranging multiple magnet units 31 spaced apart circumferentially along the magnetic conductive assembly 2, the magnetic field coverage is made more comprehensive, resulting in more comprehensive and accurate detection of pipeline defects.

[0062] like Figure 14 As shown, in addition to the features of the above embodiments, this embodiment further specifies that: the magnetic conductive assembly 2 includes a first support plate 21, a second support plate 22, and a magnetic conductive brush 23. The first support plate 21 is disposed on the support assembly 1, the magnet assembly 3 is disposed on the first support plate 21 and / or the second support plate 22 and is located between the first support plate 21 and the second support plate 22, and the magnetic conductive brush 23 is disposed on the second support plate 22. The magnet assembly 3's location between the first support plate 21 and the second support plate 22 improves its stability and reliability. The magnetic conductive brush 23 facilitates magnetic circuit transmission, which is beneficial for detecting pipeline defects.

[0063] like Figure 15-16 As shown, in addition to the features of the above embodiments, this embodiment further includes a hub assembly 5, which is disposed on the support assembly 1. The hub assembly 5 is disposed adjacent to the magnetic flux leakage probe assembly 4. The magnetic flux leakage probe assembly 4 includes multiple magnetic flux leakage probe units 41, all of which are disposed on the support assembly 1 and electrically connected to the hub assembly 5. The hub assembly 5 allows the wires of the multiple magnetic flux leakage probe units 41 to be integrated, avoiding wiring clutter. This design enables the magnetic flux leakage probe assembly 4 to detect magnetic flux leakage signals and transmit them through the hub assembly 5, improving data transmission efficiency.

[0064] like Figure 15-16 As shown, in addition to the features of the above embodiments, this embodiment further specifies that: the hub assembly 5 includes hub modules 51, and the number of hub modules 51 is multiple. All hub modules 51 are disposed on the support assembly 1, and the multiple hub modules 51 are spaced apart circumferentially along the support assembly 1. Each hub module 51 is electrically connected to one or more magnetic flux leakage probe units 41. By distributing multiple hub modules 51 circumferentially along the support assembly 1, the wires of one or more magnetic flux leakage probe units 41 can be integrated and managed, avoiding wiring chaos and improving the maintainability of the overall structure. With the arrangement of multiple hub modules 51, even if a single module fails, the remaining modules can still maintain some detection functions, improving system reliability.

[0065] In addition to the features of the above embodiments, this embodiment further specifies that: the magnetic flux leakage probe unit 41 includes a microcontroller, which is electrically connected to the hub assembly 5. Through the electrical connection between the microcontroller of the magnetic flux leakage probe unit 41 and the hub assembly 5, the sensor data collected by the microcontroller can be promptly transmitted to the hub assembly 5 and then transmitted by the hub assembly 5 to other components such as circuit boards.

[0066] In addition to the features of the above embodiments, this embodiment further includes a circuit board, which is electrically connected to the hub assembly 5. Through the electrical connection between the circuit board and the hub assembly 5, data collected by the hub assembly 5 can be promptly transmitted to the circuit board for further processing and transmission.

[0067] Example 2

[0068] like Figure 17 As shown, this embodiment discloses an in-pipe detector, including: the above-mentioned magnetic flux leakage probe structure 100.

[0069] The second aspect of this application discloses a pipe internal detector. Through the cooperative design of the magnetic conductive component 2 and the surrounding magnet component 3, the distribution of the magnetic field in the circumference of the pipe is enhanced, thereby improving the detection coverage of defects. This design effectively improves the magnetic field coverage, enabling 360-degree detection of the pipe without blind spots, achieving comprehensive and accurate detection of pipe defects. By including the aforementioned magnetic leakage probe structure 100, it fully inherits all the functions of magnetic field generation, magnetic field signal acquisition, and pipe defect identification.

[0070] The above embodiments only illustrate several implementation methods of this utility model, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A magnetic flux leakage probe structure, characterized in that, include: Support component (1) extends along the length direction; A magnetic conductive component (2) is disposed on the support component (1) and is arranged around the support component (1); A magnet assembly (3) is disposed on the magnetic conductive assembly (2) and surrounds the support assembly (1). The magnet assembly (3) is used to generate a magnetic field. A magnetic flux leakage probe assembly (4) is disposed on the support assembly (1) and / or the magnetic conductive assembly (2). The magnetic flux leakage probe assembly (4) is disposed around the support assembly (1). The magnetic flux leakage probe assembly (4) is used to collect the magnetic field generated by the magnet assembly (3).

2. The magnetic flux leakage probe structure according to claim 1, characterized in that, The number of magnetic conductive components (2) is multiple, and all of the magnetic conductive components (2) are disposed on the support component (1). The multiple magnetic conductive components (2) are arranged sequentially along the length direction of the support component (1). The number of magnet components (3) is multiple, and the number of magnet components (3) is the same as the number of magnetic conductive components (2), and the magnet components (3) are disposed one-to-one on the magnetic conductive components (2).

3. The magnetic flux leakage probe structure according to claim 2, characterized in that, The magnetic flux leakage probe assembly (4) is located among the plurality of magnet assemblies (3); And / or multiple magnetic conductive components (2) are arranged opposite to each other; And / or multiple magnetic conductive components (2) are sleeved on the support component (1); And / or the number of the magnetic conductive component (2) and the number of the magnet component (3) are both two, and the magnet component (3) is arranged on the magnetic conductive component (2) in a one-to-one correspondence, and the magnetic leakage probe component (4) is located between the two magnet components (3).

4. The magnetic flux leakage probe structure according to claim 1, characterized in that, The magnetic flux leakage probe assembly (4) includes multiple magnetic flux leakage probe units (41). The multiple magnetic flux leakage probe units (41) are all disposed on the support assembly (1). The multiple magnetic flux leakage probe units (41) are arranged at intervals along the circumference of the support assembly (1). The multiple magnetic flux leakage probe units (41) are all used to collect the magnetic field generated by the magnet assembly (3).

5. The magnetic flux leakage probe structure according to claim 4, characterized in that, The magnetic flux leakage probe unit (41) includes a support structure (411), a triaxial Hall sensor, an eddy current sensor, and a microcontroller. The support structure (411) is mounted on the support assembly (1). The triaxial Hall sensor, the eddy current sensor, and the microcontroller are all mounted on the support structure (411). The triaxial Hall sensor and the eddy current sensor are both electrically connected to the microcontroller.

6. The magnetic flux leakage probe structure according to claim 5, characterized in that, The number of the triaxial Hall sensors is 4-8, and all of them are electrically connected to the single-chip microcomputer. And / or the support structure (411) includes a support base (4111), a first support block (4112), a second support block (4113), an elastic element (4114), and a support box (4115). The support base (4111) is disposed on the support assembly (1). The first support block (4112) and the second support block (4113) are both disposed on the support base (4111). The first support block (4112) and the second support block (4113) are capable of being positioned relative to the support assembly (1). The base (4111) rotates, the first support block (4112) and the second support block (4113) are arranged adjacent to each other, the two ends of the elastic element (4114) are respectively connected to the first support block (4112) and the second support block (4113), the support box (4115) is arranged on the first support block (4112) and / or the second support block (4113), and the triaxial Hall sensor, the eddy current sensor and the microcontroller are all arranged on the support box (4115).

7. The magnetic flux leakage probe structure according to claim 1, characterized in that, The magnet assembly (3) includes a magnet unit (31), and there are multiple magnet units (31). All of the multiple magnet units (31) are disposed on the magnetic conductive assembly (2). The multiple magnet units (31) are arranged at intervals along the circumference of the magnetic conductive assembly (2). The multiple magnet units (31) are arranged around the support assembly (1). And / or the magnetic conductive assembly (2) includes a first support plate (21), a second support plate (22) and a magnetic steel brush (23), the first support plate (21) is disposed on the support assembly (1), the magnet assembly (3) is disposed on the first support plate (21) and / or the second support plate (22) and the magnet assembly (3) is located between the first support plate (21) and the second support plate (22), and the magnetic steel brush (23) is disposed on the second support plate (22).

8. The magnetic flux leakage probe structure according to claim 1, characterized in that, It also includes a hub assembly (5), which is disposed on the support assembly (1). The hub assembly (5) is disposed adjacent to the magnetic flux leakage probe assembly (4). The magnetic flux leakage probe assembly (4) includes multiple magnetic flux leakage probe units (41), all of which are disposed on the support assembly (1). All of the multiple magnetic flux leakage probe units (41) are electrically connected to the hub assembly (5).

9. The magnetic flux leakage probe structure according to claim 8, characterized in that, The hub assembly (5) includes a hub module (51), and there are multiple hub modules (51). The multiple hub modules (51) are all disposed on the support assembly (1). The multiple hub modules (51) are arranged at intervals along the circumference of the support assembly (1). The hub module (51) is electrically connected to one or more of the magnetic leakage probe units (41). And / or the magnetic flux leakage probe unit (41) includes a microcontroller, which is electrically connected to the hub assembly (5); And / or may also include a circuit board electrically connected to the hub assembly (5).

10. A pipe-mounted detector, characterized in that, include: The magnetic flux leakage probe structure (100) as described in any one of claims 1-9.

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