Suspension type magnetic flux leakage detection device

Abstract

The utility model discloses a suspension type magnetic flux leakage detection device which comprises a detection device, a power adjusting screen, a device switch, a conveying belt transmission module, an upper-layer conveying belt, a lower-layer conveying belt, a lower-layer conveying belt adjusting module, a conveying belt transmission shaft, a device supporting structure, an adjustable supporting base and an upper-layer and lower-layer layering partition plate. According to the device, suspension detection can be carried out on the device, a detected piece can be effectively prevented from being in contact with an entity to influence a detection result, meanwhile, a power adjusting screen is arranged on the side face of the device, the power of the device can be flexibly adjusted, and the cost can be controlled through the blank filling rate when the device faces different rates; when placed, the support can face different planes, and it is guaranteed that the upper portion of the support is horizontal.

Description

Technical Field

[0001] The utility model belongs to the technical field of steel pipe magnetic detection, and particularly relates to a suspension type magnetic leakage detection device. Background Art

[0002] Currently, axial localized yoke magnetization devices are lightweight and portable and are widely used in magnetic flux leakage testing of steel pipes. The magnetizer creates an axial magnetic field within the steel pipe, which is used to detect axial defects. In actual operation, the magnetization intensity is inconsistent across the probe coverage area, with the intensity being highest at the center probe position and gradually decreasing at the edges. The magnetic flux leakage detection signal is closely related to the magnetization intensity of the steel pipe. Different magnetization intensities lead to inconsistent leakage fields, which in turn lead to inconsistent detection signals. This results in inconsistent detection signals for the same defect at different locations, significantly impacting the quantitative assessment of the defect and significantly reducing the accuracy of defect quantification, which inconveniences the health assessment of the steel pipe.

[0003] The following problems are common in the use of an existing local magnetization magnetic flux leakage detection device for steel pipes (e.g., application number: CN218726881U):

[0004] 1. When the pipe is connected to other structures, the magnetic induction results are prone to deviations: missed detection or misjudgment: Since the pipe is connected to other structures, the magnetic circuit formed will change the distribution of the magnetic flux, thereby affecting the detection of the leakage magnetic signal. This may cause some defects to not be accurately detected, or misjudgment may occur, and normal parts may be mistaken for defects. Reduced detection accuracy: When the pipe is connected to other structures, the distribution of the magnetic field will change, which may lead to a decrease in detection accuracy. This will affect the positioning and assessment of defects, making the detection results less reliable. Reduced detection efficiency: Since the pipe is connected to other structures, the complexity of the magnetic circuit increases, and it may take more time and effort to perform leakage magnetic detection. This will lead to a decrease in detection efficiency, increase workload and cost, so there is an urgent need for a leakage magnetic detection device that can adjust power.

[0005] 2. Unable to adjust its output frequency: Signal interference: If the output frequency of the magnetic flux leakage detection device is close to the interference frequency of other equipment or the environment, it may cause signal interference. This interference may affect the accuracy of the test results, resulting in misjudgment or missed detection. Sensitivity mismatch: Different materials and defect types may have different magnetic flux leakage responses at different frequencies. If the magnetic flux leakage detection device cannot adjust the output frequency, it may not be able to adapt to the detection requirements of different materials and defect types, resulting in sensitivity mismatch, affecting the reliability of the test results. Energy waste: If the output frequency of the magnetic flux leakage detection device is too high or too low, it may result in energy waste. Too high a frequency may increase power consumption, while too low a frequency may reduce detection efficiency, thereby wasting energy, so there is an urgent need for a magnetic flux leakage detection device that can adjust power.

[0006] 3. The base cannot be adjusted and cannot adapt to various construction planes: Unstable detection signal: The unevenness or tilt of the construction plane may cause poor contact between the leakage magnetic detection device and the object being detected. This will cause the stability of the detection signal to decrease, and noise or interference may occur, affecting the accuracy of the detection results. Decreased detection sensitivity: The inability to adjust the base may cause the leakage magnetic detection device to be unable to maintain appropriate contact force with the object being detected. This may lead to a decrease in detection sensitivity and an inability to effectively detect small or superficial defects. Reduced detection efficiency: Since the base cannot be adjusted, the leakage magnetic detection device may find it difficult to maintain a stable working state on an uneven construction plane. This will affect the efficiency of the detection and may require more time and effort to complete the detection task, so there is an urgent need for a leakage magnetic detection device with an adjustable base height. Summary of the Invention

[0007] A suspended magnetic flux leakage detection device, comprising a detection device, a power adjustment screen, a device switch, a conveyor belt drive module, an upper conveyor belt, a lower conveyor belt, a lower conveyor belt adjustment module, a conveyor belt drive shaft, a device support structure, an adjustable support base, and upper and lower layer partitions;

[0008] It includes a detection device, which is provided with a power adjustment screen on the side, a device switch is provided next to the power adjustment screen, an upper conveyor belt is provided at the lower end of the detection device, a device support structure is provided at the lower end of the upper conveyor belt, conveyor belt transmission modules are provided on both sides of the device support structure, upper and lower layer partitions are provided at the tail end of the upper conveyor belt, the lower ends of the upper and lower layer partitions are connected to the lower conveyor belt, and a lower conveyor belt adjustment module is provided at the tail end of the lower conveyor belt.

[0009] Furthermore, an adjustable support base is provided at the lower end of the device support structure.

[0010] Furthermore, a conveyor belt drive shaft is provided inside the conveyor belt.

[0011] Furthermore, the power adjustment screen adopts a touch-controlled adjustment screen.

[0012] Furthermore, the device support structure adopts a cross-shaped welding structure.

[0013] Furthermore, the upper conveyor belt and the lower conveyor belt are rubber conveyor belts.

[0014] The present invention has the following beneficial effects: 1. By converting the detection device to a magnetic levitation structure, the device being detected avoids contact with other structures, resulting in the following advantages: Non-contact detection: The magnetic levitation structure enables non-contact detection of the object being detected, without the need for direct contact or attachment to the object. This avoids signal interference and errors caused by contact with other structures. Improved stability and accuracy: The magnetic levitation structure maintains a constant distance and stable operating state between the detection device and the object being detected, thereby improving detection stability and accuracy. It eliminates problems such as poor contact or instability caused by uneven or tilted construction surfaces. Strong adaptability: The magnetic levitation structure can adapt to various construction surfaces, including curved and uneven surfaces. It can adaptively adjust to the shape and surface features of the object being detected, ensuring optimal contact and accurate detection. Improved detection efficiency: The non-contact nature and stability of the magnetic levitation structure improve detection efficiency. Operators no longer need to frequently adjust and fix the detection device, saving time and labor costs.

[0015] 2. The power adjustment screen allows users to monitor and adjust the device's power, offering the following advantages: Adjustable Power: After setting up the power adjustment screen, users can adjust the power according to the characteristics of the inspected object and the inspection requirements. This ensures accurate and effective inspections while avoiding issues like over-detection or missed detections. Controllable Sensitivity and Speed: Appropriately adjusting the power controls the sensitivity and speed of the MFL detector. For faster inspections, the power can be increased, while for applications requiring higher sensitivity, the power can be reduced to improve accuracy and stability. Easy Operation: After setting up the power adjustment screen, users can adjust the power through a simple interface without the need for additional tools or complex operations. This improves operational efficiency and convenience, reducing operational difficulty and the risk of errors. High Adaptability: By setting up the power adjustment screen, the MFL detector can adapt to different inspected objects and application scenarios. Flexible adjustment and optimization can be achieved based on varying inspection requirements and environmental conditions, ensuring accurate and reliable test results.

[0016] 3. By setting up an adjustable support base, it is possible to adapt to different placement planes by adjusting the height of each part, and bring the following advantages: Greater adaptability: Since the differences between different planes or equipment may cause the detection plane to have different heights, the adjustable support base can provide greater adaptability, so that the leakage magnetic detection device can be used in a variety of different environments. Higher precision: By adjusting the height, it can be ensured that the probe of the leakage magnetic detection device fits tightly with the detection plane, thereby obtaining more accurate detection results. More convenient to use: The user can adjust the height of the support base at any time as needed, without having to replace fixed-height devices for different planes or equipment, which simplifies the operating steps. Extended service life: Due to the adjustability of the device, it can better withstand the stress under different environments and usage conditions, thereby extending its service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the overall structure of the utility model Figure 1 ;

[0018] Figure 2 This is a schematic diagram of the overall structure of the utility model Figure 2 ;

[0019] In the figure: 1. Detection device; 2. Power adjustment screen; 3. Device switch; 4. Conveyor belt drive module; 5. Upper conveyor belt; 6. Lower conveyor belt; 7. Lower conveyor belt adjustment module; 8. Conveyor belt drive shaft; 9. Device support structure; 10. Adjustable support base; 11. Upper and lower layer partitions. DETAILED DESCRIPTION

[0020] In order to make the technical means, creative features, objectives and effects achieved by the present invention easier to understand, the present invention is further described below in conjunction with specific implementation methods.

[0021] Those skilled in the art should connect all electrical components in this case to their corresponding power supplies through wires, and should select appropriate controllers according to actual conditions to meet control requirements. The specific connection and control sequence should refer to the following working principle, in which the electrical components are electrically connected in sequence. The detailed connection methods are well known in the art. The following mainly introduces the working principles and processes, and no further explanation of electrical control is given.

[0022] Example 1

[0023] See also Figure 1-2 , the utility model provides a technical solution:

[0024] It includes a detection device 1, which is provided with a power adjustment screen 2 on the side, and a device switch 3 is provided next to the power adjustment screen 2. The lower end of the detection device 1 is provided with an upper conveyor belt 5, and a transmission shaft is provided under the upper conveyor belt 5, which is connected to the device support structure 9 through the transmission shaft. The device support structure 9 has conveyor belt transmission modules 4 bolted on both sides, and the tail end of the upper conveyor belt 5 is provided with upper and lower layer partitions 11, and the lower ends of the upper and lower layer partitions 11 are connected to the lower conveyor belt 6. The tail end of the lower conveyor belt 6 is provided with a conveyor belt adjustment module 7 connected to the side of the lower device support structure 9 by bolts; in the above-mentioned setting, the lower conveyor belt adjustment module 7 adopts the reduction motor of Xin Xitian Mechanical and Electrical Co., Ltd., which adopts advanced reduction technology to improve the reduction ratio and transmission efficiency and reduce energy consumption; in the above-mentioned setting, the material of the device support structure 9 is 7075 stainless steel, which ensures its own strength while being light in weight and convenient for transportation; in the above-mentioned setting, the device switch 3 adopts a coupled switch. Due to the unique structure of the coupled switch, no sparks will be generated during its operation, so it has high stability and reliability.

[0025] The suspended magnetic flux leakage detection device: an adjustable support base 10 is provided at the lower end of the device support structure 9. The adjustable support base can be adjusted in height according to different ground conditions and equipment requirements, so that the entire device can adapt to various different usage environments, thereby improving its adaptability and practicality.

[0026] The suspended magnetic flux leakage detection device: A conveyor belt drive shaft 8 is provided inside the conveyor belt, which can drive the conveyor belt to ensure the stable transmission of the transport structure.

[0027] The suspended magnetic flux leakage detection device: The power adjustment screen 2 adopts a touch-operated adjustment screen, which provides the user with an intuitive operation method. The user can directly touch the screen to quickly adjust the power.

[0028] The suspended magnetic flux leakage detection device: the device support structure 9 adopts a cross-shaped welding structure, and the yield limit of the structure is increased by 15%, ensuring the stability of the structure.

[0029] The suspended magnetic flux leakage detection device: The upper conveyor belt 5 and the lower conveyor belt 6 are made of rubber conveyor belts. The rubber conveyor belt has unique elasticity and can absorb impact well, which helps to protect the material and reduce vibration during the transmission process.

[0030]

[0031] The suspended magnetic flux leakage detection device, equipped with a detection device, enables non-contact detection of the test object, eliminating the risk of physical contact that could affect the test results. This device utilizes magnetic field principles for detection, using a levitation technique to suspend the test object in mid-air and acquire relevant data through magnetic field induction. To enhance detection flexibility and adaptability, a power adjustment screen is installed on the side of the device, allowing for flexible adjustment of power output as needed. Different test object speeds may require different power outputs. Adjusting the fill rate helps control costs and meet testing requirements at varying speeds. To ensure the stability and adaptability of the device, an adjustable base is installed at the bottom. This allows the base to be adjusted to maintain the upper portion's horizontal position when the device is placed on different surfaces, ensuring detection accuracy. These improvements provide the detection device with greater flexibility and adaptability for non-contact detection. It effectively prevents contact with the test object, preventing the impact of test results, and allows for customized power and base adjustments, improving detection accuracy and stability.

[0032] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and improvements may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and improvements are intended to fall within the scope of the present invention. The scope of protection claimed in this invention is defined by the appended claims and their equivalents.

Claims

1. A suspended magnetic flux leakage detection device, comprising a detection device (1), characterized in that: The detection device (1) is provided with a power adjustment screen (2) on the side, and a device switch (3) is provided next to the power adjustment screen (2). The lower end of the detection device (1) is provided with an upper conveyor belt (5), and the lower end of the upper conveyor belt (5) is provided with a device support structure (9). Conveyor belt transmission modules (4) are provided on both sides of the device support structure (9). The tail end of the upper conveyor belt (5) is provided with upper and lower layer partitions (11), and the lower ends of the upper and lower layer partitions (11) are connected to the lower conveyor belt (6). The tail end of the lower conveyor belt (6) is provided with a lower conveyor belt adjustment module (7).

2. The suspended magnetic flux leakage detection device according to claim 1, characterized in that: An adjustable support base (10) is provided at the lower end of the device support structure (9).

3. The suspended magnetic flux leakage detection device according to claim 1, characterized in that: A conveyor belt drive shaft (8) is provided inside the conveyor belt.

4. The suspended magnetic flux leakage detection device according to claim 2, characterized in that: The power adjustment screen (2) adopts a touch-type control adjustment screen.

5. The suspended magnetic flux leakage detection device according to claim 1, characterized in that: The device support structure (9) adopts a cross-shaped welding structure.

6. The suspended magnetic flux leakage detection device according to claim 1, characterized in that: The upper conveyor belt (5) and the lower conveyor belt (6) are rubber conveyor belts.

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