A dual-probe floating structure of an in-pipe detector and a detection device

Abstract

This utility model discloses a dual-probe floating structure and detection device for pipeline inspection, relating to the technical field of pipeline inspection equipment. The dual-probe floating structure includes: a base with a mounting groove on its surface; a probe assembly disposed in the mounting groove and used for pipeline inspection; two first elastic members, each disposed on one side wall of the mounting groove and abutting against the probe assembly; and a second elastic member disposed at the bottom of the mounting groove and abutting against the probe assembly. The dual-probe floating structure and detection device for pipeline inspection provided by this application, through the arrangement of the first and second elastic members, allows the probe assembly to float, providing a buffering effect when the probe assembly is subjected to impact or compression, reducing the probability of damage to the probe assembly.

Description

Technical Field

[0001] This utility model relates to the technical field of pipeline inspection equipment, and more specifically, to a dual-probe floating structure for an in-pipe detector. Furthermore, this utility model also relates to an inspection device including the aforementioned dual-probe floating structure for an in-pipe detector. Background Technology

[0002] Pipeline inspection refers to the process of placing a specialized detector (commonly known as a "smart pig" or "pipeline cleaner") into an operating pipeline, allowing it to move along with the transported medium. Through built-in sensors, it collects real-time data on the condition of the pipe wall, thereby detecting potential hazards such as corrosion, cracks, geometric deformation, and weld defects, and accurately locating and quantifying these defects.

[0003] Current pipeline detector probes are typically supported by a single or double metal arm. This type of support and fixation means that the probe cannot withstand significant lateral forces or deformation when it is running in the pipeline, which can easily damage the probe.

[0004] In conclusion, how to avoid probe damage is a problem that urgently needs to be solved by those skilled in the art. Utility Model Content

[0005] In view of this, the purpose of this utility model is to provide a dual-probe floating structure for a pipeline detector. The first and second elastic elements can act as a buffer when the probe assembly is subjected to impact or compression, thereby reducing the probability of probe damage.

[0006] Another objective of this invention is to provide a detection device including the above-mentioned floating structure of a dual-probe in-pipe detector.

[0007] To achieve the above objectives, this utility model provides the following technical solution:

[0008] A dual-probe floating structure for an in-pipe detector includes:

[0009] The base has mounting grooves on its surface;

[0010] A probe assembly is disposed in the mounting slot, and the probe assembly is used to inspect the pipeline;

[0011] Two first elastic elements are provided, and the two first elastic elements are respectively provided on the two side walls of the mounting groove and abut against the probe assembly;

[0012] The second elastic element is located at the bottom of the mounting groove and abuts against the probe assembly.

[0013] Preferably, the device further includes a limiting member, wherein the probe assembly has a through hole, the limiting member passes through the through hole and is used to achieve a fixed connection between the probe assembly and the base.

[0014] Preferably, there are two perforations that are corresponding to the first elastic element, and there are two limiting elements that are corresponding to the perforations.

[0015] Preferably, it further includes a yoke assembly, which is fixedly connected to the base, and the surface of the yoke assembly is provided with a limiting hole corresponding to the limiting member.

[0016] Preferably, the mounting groove is located in the middle of the base, and the opening direction of the mounting groove is perpendicular to the length direction of the base.

[0017] Preferably, there are two mounting slots, and the openings of the two mounting slots are arranged facing away from each other.

[0018] Preferably, the probe assembly is a magnetic flux leakage probe.

[0019] Preferably, the base has two notches, and pulleys are provided at the notches.

[0020] Preferably, it further includes a drive assembly, which is electrically connected to the pulley and is used to drive the pulley to rotate.

[0021] A detection device includes a floating dual-probe structure for an in-pipe detector, wherein the floating dual-probe structure for an in-pipe detector is any one of the above-mentioned floating dual-probe structures for an in-pipe detector.

[0022] This utility model provides a floating dual-probe structure for a pipeline detector. An installation groove is provided on the surface of its base, and a probe assembly is installed within the groove. First elastic elements are provided on both side walls of the installation groove, and a second elastic element is provided on the bottom surface. After the probe assembly is installed into the groove, the inner wall of the groove will not directly contact the probe assembly. When the probe assembly is subjected to impact or compression, the first and second elastic elements can act as a buffer, significantly reducing the probability of direct damage to the probe assembly. Attached Figure Description

[0023] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0024] Figure 1This is a top view of the dual-probe floating structure of the pipeline detector provided by this utility model.

[0025] Figure 2 for Figure 1 A schematic diagram of the local structure at point C;

[0026] Figure 3 for Figure 1 Cross-sectional view at point AA;

[0027] Figure 4 This is a front view of the dual-probe floating structure of the pipeline detector provided by this utility model.

[0028] Figure 5 This is a schematic diagram of the dual-probe floating structure of the pipeline detector provided by this utility model.

[0029] Figure label:

[0030] 1-Base; 2-Probe assembly; 3-First elastic element; 4-Second elastic element; 5-Limiting element; 6-Yoke assembly; 7-Pulley. Detailed Implementation

[0031] 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.

[0032] The core of this utility model is to provide a floating structure for a dual-probe detector in a pipeline. This structure makes the probe assembly a floating structure by setting a first elastic element and a second elastic element, so as to avoid direct damage to the probe when it is subjected to impact or compression.

[0033] Another core aspect of this invention is to provide a detection device that includes the aforementioned floating structure of a dual-probe detector for pipelines.

[0034] It should be noted that the orientation or positional relationship indicated by terms such as "upper", "lower", "front", and "rear" is based on the orientation or positional relationship shown in the accompanying drawings and is only for the purpose of facilitating the description of this application and simplifying the description. It is not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0035] This application provides a floating structure for a dual-probe detector in a pipeline, comprising: a base 1, a probe assembly 2, a first elastic element 3, and a second elastic element 4;

[0036] The base 1 has a mounting groove on its surface;

[0037] The probe assembly 2 is located in the mounting slot and is used to inspect the pipeline;

[0038] Two first elastic elements 3 are provided, and the two first elastic elements 3 are respectively provided on the two side walls of the mounting groove and abut against the probe assembly 2.

[0039] The second elastic element 4 is located at the bottom of the mounting groove and abuts against the probe assembly 2.

[0040] Specifically, the structure of the dual-probe floating structure of the pipeline detector can be found in the attached document. Figure 1 With appendix Figure 5 The base 1, serving as the base of the overall structure, has a mounting groove on its surface. The probe assembly 2 is housed within the mounting groove. It should be noted that the structure of the probe assembly 2 should correspond to the structure of the mounting groove. Taking this application as an example, the overall structure of the probe assembly 2 is approximately cuboid; therefore, the structure of the mounting groove should correspondingly be cuboid. However, it should be clarified that the volume of the mounting groove should be slightly larger than the volume of the probe assembly 2 to ensure that the probe assembly 2, the first elastic element 3, and the second elastic element 4 can be simultaneously installed into the mounting groove. Figure 1 For example, a first elastic element 3 is provided on both the left and right side walls of the mounting groove, and a second elastic element 4 is provided at the bottom of the mounting groove. Both the first elastic element 3 and the second elastic element 4 have a certain degree of hardness and elasticity. Under normal conditions, the first elastic element 3 and the second elastic element 4 can support the probe assembly 2. When the probe assembly 2 is subjected to impact or compression, the first elastic element 3 and the second elastic element 4 can buffer the force on the probe assembly 2, leaving a certain buffer space for the probe assembly 2 and preventing the probe assembly 2 from being directly damaged by impact.

[0041] In addition, the first elastic element 3 is not limited to being directly set on the inner wall of the mounting groove. Alternatively, two first elastic elements 3 can be set on the left and right sides of the probe assembly 2 respectively, so that the first elastic element 3 and the probe assembly 2 can be placed into the mounting groove together.

[0042] Optionally, the first elastic element 3 and the second elastic element 4 can be made of rubber / elastomer materials, such as rubber pads or rubber plugs.

[0043] Optionally, the first elastic element 3 and the second elastic element 4 can be spring-like structures, such as compression coil springs, wave spring washers, etc.

[0044] Based on the above embodiments, a limiting member 5 is also included. The probe assembly 2 is provided with a through hole, and the limiting member 5 passes through the through hole and is used to realize the fixed connection between the probe assembly 2 and the base 1.

[0045] Specifically, the structure of the limiting component 5 can be found in the attached diagram. Figure 1 With appendix Figure 2 The probe assembly 2 has a through hole. The limiting member 5 includes a large end and a connecting end. The connecting end of the limiting member 5 can pass through the through hole on the probe assembly 2 and connect with the yoke assembly 6. The yoke assembly 6 will be mentioned later. This allows the probe assembly 2 to be limited in a plane parallel to the surface of the base 1. In other words, the limiting member 5 can position the probe assembly 2 in the mounting groove and prevent it from falling out of the mounting groove.

[0046] Based on the above embodiment, two perforations are provided and are correspondingly arranged with the first elastic member 3, and two limiting members 5 are provided, with the limiting members 5 correspondingly arranged with the perforations.

[0047] For details, please refer to the appendix. Figure 1 The structure of the probe assembly 2 has been described above. This application uses a cuboid structure as an example. Therefore, a through hole needs to be set at each of the left and right ends of the probe assembly 2, and a limiting member 5 is set in each through hole. The position of the probe assembly 2 is fixed by the limiting member 5 to prevent the probe assembly 2 from falling out of the mounting groove.

[0048] Based on the above embodiments, a yoke assembly 6 is also included. The yoke assembly 6 is fixedly connected to the base 1, and the surface of the yoke assembly 6 is provided with a limiting hole corresponding to the limiting member 5.

[0049] Specifically, the yoke assembly 6 of the pipe detector is essentially a magnetically conductive frame made of a piece or a group of high-permeability soft magnetic materials (such as pure iron, silicon steel sheets, and low-carbon steel). The function of the yoke assembly 6 is to efficiently guide the magnetic flux of the magnet to the pipe wall and then 'connect' the magnetic flux of the pipe wall loop back to form a closed magnetic circuit, so that a sufficiently strong and predictable leakage magnetic signal is generated at the defect. Two limiting holes are provided on the yoke assembly 6, which correspond to the through holes provided on the probe assembly 2, so that the connecting end of the limiting member 5 can pass through the through hole and be inserted into the limiting hole, thereby realizing the connection between the limiting member 5 and the yoke assembly 6, as well as limiting the probe assembly 2.

[0050] Optionally, the limiting component 5 can be a bolt, and the limiting hole on the yoke assembly 6 can be a threaded hole that matches the bolt, which is lower in cost and easier to manufacture.

[0051] Based on the above embodiment, the mounting groove is located in the middle of the base 1, and the opening direction of the mounting groove is perpendicular to the length direction of the base 1.

[0052] For details, please refer to the appendix. Figure 1The mounting slot is located in the middle of the base 1, with the opening of the mounting slot facing upwards or downwards, so that the probe assembly 2 can be located in the middle of the base 1, or the center of the magnetic field. The magnetic field distribution of the leakage magnetic field probe is as follows: the center between the poles is the region with the highest and most uniform magnetic flux density. After the yoke assembly 6 and the permanent magnet form a closed magnetic circuit, the magnetic induction intensity B in the tube wall has a peak value directly below the pole shoes, while at the "geometric center" between the two pole shoes, not only is the value high, but the gradient along the circumference / axis is also the smallest (ΔB / Δx≈0). The defect leakage magnetic field ΔΦ is proportional to the background magnetic flux Φ0. The more uniform the background field, the easier it is for the "relative disturbance" generated by the defect to be distinguished by the probe. The central arrangement can avoid end leakage magnetic distortion. If the probe assembly 2 is close to the edge of the magnetic pole, the magnetic flux lines themselves tend to dissipate into the air, and the defect signal will be "submerged" by the strong background gradient. When placed in the center, the leakage magnetic peak-to-peak value at the defect is the largest, and the waveform is symmetrical, making subsequent filtering and threshold judgment simpler and reducing quantization error.

[0053] In summary, placing the magnetic flux leakage probe at the center of the magnetic field of the yoke assembly allows it to operate in the golden area where the background magnetic field is strongest and most uniform, thereby maximizing the defect magnetic flux leakage signal, minimizing background noise, and simultaneously ensuring mechanical stability and maintainability.

[0054] Based on the above embodiment, there are two mounting slots, and the openings of the two mounting slots are arranged opposite to each other.

[0055] Specifically, the dual-probe floating structure for the pipeline detector provided in this application can accommodate multiple probe assemblies 2 (attached). Figure 1 To be continued Figure 5(There are only two in each group). It should be noted that the design of multiple probe components 2 is not simply "stacked" together, but has a clear functional partitioning and redundancy design purpose: 1. Higher circumferential resolution: The setting of multiple probe components 2 can "cut" the entire pipe wall into several narrow bands; a single defect generates a signal at adjacent probes, and the accuracy of defect circumferential length measurement can be improved from centimeter level to millimeter level through interpolation algorithm; 2. Higher axial coverage (no blind zone): The probes are arranged in a staggered manner along the axial direction to form "overlapping scan". Even with mechanical gaps between probes, 100% pipe wall coverage can be achieved through two magnetization / scanning cycles, avoiding missed detections; 3. More reliable defect quantification: When the same defect is recorded simultaneously by multiple probes from different angles / lift-off heights, the "multi-view inversion" method can be used to reduce wall thickness errors; the quantitative accuracy for oblique cracks and composite defects can be improved by more than 30%; 4. Stronger redundancy and fault tolerance: When individual probes fail due to wear or contamination, adjacent probes can still fill in, and the data for the entire loop will not be interrupted; the system can mark failure channels in real time, and subsequent analysis will automatically remove bad points, ensuring the completion rate of the detection task; 5. Richer defect type recognition: The combination of probes with different lift-off heights and different sensitivities can distinguish signal characteristics such as metal loss (corrosion), axial cracks, circumferential cracks, and weld root defects, reducing the probability of "false judgment"; 6. Higher detection speed and efficiency: The probe array can acquire high-density data in one pass, and the detection speed can be increased from the traditional 1-2m / s to 4-5m / s without sacrificing resolution, significantly shortening the shutdown window of long-distance pipelines.

[0056] In some embodiments, probe assembly 2 is a magnetic flux leakage probe.

[0057] Specifically, magnetic flux leakage probes have advantages such as strong applicability, high detection efficiency, good environmental adaptability, strong defect identification capability, high quantification accuracy, and mature equipment structure in pipeline detectors.

[0058] Based on the above embodiment, the base 1 is provided with two notches, and pulleys 7 are provided at the notches.

[0059] For details, please refer to the appendix. Figure 5 The base 1 has a notch on each side, and a pulley 7 is installed in each notch. The pulley 7 can reduce the friction during the sliding process of the detector, improve the service life of the equipment, and facilitate the movement of the detector in the pipeline.

[0060] Based on the above embodiments, a drive component is also included, which is electrically connected to the pulley 7 and is used to drive the pulley 7 to rotate.

[0061] Specifically, the detector inside the pipeline is moved by a drive component, but generally, a drive component may not be required. The power source for the detector is the pressure difference of the conveying medium. The detector itself does not have a motor and relies on the pressure difference ΔP between the upstream and downstream sides to generate thrust.

[0062] In addition to the above-mentioned floating dual-probe structure for pipeline detectors, this utility model also provides a detection device that includes the floating dual-probe structure for pipeline detectors disclosed in the above embodiments. For the structure of other parts of this detection device, please refer to the prior art, which will not be repeated here.

[0063] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on the differences from other embodiments. The same or similar parts between the various embodiments can be referred to each other.

[0064] The above provides a detailed description of the dual-probe floating structure and detection device for pipeline detectors provided by this utility model. Specific examples have been used to illustrate the principles and implementation methods of this utility model. The descriptions of the embodiments above are merely for the purpose of helping to understand the method and core ideas of this utility model. It should be noted that those skilled in the art can make various improvements and modifications to this utility model without departing from its principles, and these improvements and modifications also fall within the protection scope of the claims of this utility model.

Claims

1. A dual probe float structure for an in-pipe detector, characterized by, include: The base (1) has a mounting groove on its surface; A probe assembly (2) is disposed in the mounting slot, and the probe assembly (2) is used to inspect the pipeline; Two first elastic elements (3) are provided, and the two first elastic elements (3) are respectively provided on the two side walls of the mounting groove and abut against the probe assembly (2); The second elastic element (4) is located at the bottom of the mounting groove and abuts against the probe assembly (2).

2. The PIG dual probe float structure of claim 1, wherein, It also includes a limiting member (5), on which the probe assembly (2) is provided with a through hole, and the limiting member (5) passes through the through hole and is used to achieve a fixed connection between the probe assembly (2) and the base (1).

3. The PIG dual probe float structure of claim 2, wherein, Two perforations are provided and are corresponding to the first elastic member (3). Two limiting members (5) are provided and are corresponding to the perforations.

4. The PIG dual probe float structure of claim 3, wherein, It also includes a yoke assembly (6), which is fixedly connected to the base (1), and the surface of the yoke assembly (6) is provided with a limiting hole corresponding to the limiting member (5).

5. The dual-probe floating structure for the pipeline detector according to claim 1, characterized in that, The mounting groove is located in the middle of the base (1), and the opening direction of the mounting groove is perpendicular to the length direction of the base (1).

6. The PIG dual probe float structure of claim 5, wherein, The mounting slot is provided in two places, and the openings of the two mounting slots are arranged opposite to each other.

7. The dual-probe floating structure for the pipeline detector according to claim 1, characterized in that, The probe assembly (2) is a magnetic flux leakage probe.

8. The dual-probe floating structure for a pipeline detector according to any one of claims 1 to 7, characterized in that, The base (1) has two notches, and pulleys (7) are provided at the notches.

9. The PIG dual probe float structure of claim 8, wherein, It also includes a drive assembly, which is electrically connected to the pulley (7) and is used to drive the pulley (7) to rotate.

10. An inspection apparatus comprising a pipe inspection dual probe float structure, characterized by, The floating dual-probe structure of the pipeline detector is the floating dual-probe structure of the pipeline detector as described in any one of claims 1 to 9.

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