Portable through-flow boiler surface magnetic particle detection flaw detection equipment

Abstract

The utility model relates to the technical field of boilers, in particular to portable through-flow boiler surface magnetic powder detection flaw detection equipment which comprises a magnetic powder detector host, a handle groove is formed in the front side of the magnetic powder detector host, a strip-shaped sliding groove is formed in the bottom of the magnetic powder detector host, and a two-way lead screw is rotationally connected into the strip-shaped sliding groove. The two-way screw rod is in threaded connection with two magnet yoke assemblies, each magnet yoke assembly comprises a moving block, a bottom block is arranged at the bottom of each moving block, a fixed magnet yoke main rod is arranged at the bottom of each bottom block, a movable magnet yoke main rod is rotationally connected to the bottom of each fixed magnet yoke main rod, and a magnet yoke arm is rotationally connected to the bottom of each movable magnet yoke main rod. According to the portable through-flow boiler surface magnetic particle detection flaw detection equipment, the two-way lead screw and the rotary knob are designed to be used in cooperation, the equipment can rapidly adjust the distance of the magnet yoke assembly, different detection requirements are met, the requirement for frequent and complex adjustment of the equipment in the detection process by operators is greatly reduced, and the working efficiency is improved.

Description

Technical Field

[0001] This utility model relates to the field of boiler technology, specifically a portable magnetic particle inspection device for the surface of a once-through boiler. Background Technology

[0002] Once-through boilers, due to their compact structure and high thermal efficiency, are widely used in various industrial fields and are key equipment in many production processes. During the production of once-through boilers, non-destructive testing (NDT) is a crucial measure to ensure their quality and performance, especially for welded areas, which are most prone to defects and potential problems. Therefore, to ensure the production quality of once-through boilers and prevent potential defects from affecting their operational safety and efficiency, rigorous NDT in these areas is essential. Some commonly used NDT methods include ultrasonic testing, radiographic testing, and magnetic particle testing. Magnetic particle testing, due to its ease of operation and suitability for identifying minute cracks on the surface of ferromagnetic materials, is increasingly becoming one of the important technologies for boiler surface inspection.

[0003] Patent CN206876630U discloses a portable magnetic particle flaw detector, including a main unit and metal yokes located on both sides of the lower end of the main unit. The metal yokes include metal yoke columns, with a radial body fixedly connected to the upper end of each column. The radial body has a movable protrusion, and a helical body is sleeved on the protrusion. The helical body is movably connected to the main unit. The helical body has a threaded groove and a limiting mechanism that restricts the radial body's movement towards or away from its axis. This invention, by rotating the helical body, causes the radial body to move towards or away from its axis. This allows technicians using the portable magnetic particle flaw detector to control the relative distance between the metal yoke fixedly connected to the helical body according to the width of the object being measured, thus enabling more effective detection.

[0004] The aforementioned prior art involves adjusting the relative position between the limiting body and the connecting protrusion to change the direction of the limiting groove, thereby controlling the movement direction of the radial body, which in turn changes the distance between the two metal magnetic yoke pillars. By changing the relative position of the metal magnetic yoke pillars and the radial body, the two metal magnetic yoke pillars are kept parallel to achieve the best magnetic particle detection effect. However, the above adjustment process is relatively cumbersome. In addition, this design makes it difficult to ensure that the metal magnetic yoke pillars are in a parallel state after adjustment, increasing the difficulty of operation and potentially affecting the detection effect. Users need to spend a lot of time and effort to adjust, which not only reduces work efficiency but also easily causes misoperation and affects the accuracy of the detection results. In view of this, we propose a portable magnetic particle inspection device for the surface of once-through boilers. Utility Model Content

[0005] The purpose of this invention is to provide a portable magnetic particle inspection device for the surface of a once-through boiler, so as to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solutions:

[0007] A portable magnetic particle inspection device for the surface of a once-through boiler includes a magnetic particle detector main unit, which serves as the core control unit responsible for the overall operation management and signal processing of the device. The front of the magnetic particle detector main unit has a handle slot for easy carrying and handling by the operator, increasing the device's convenience and mobility. A switch button is located at the top and near the left end of the inner wall of the handle slot for turning the device's power on and off to control its working status. A power interface is located on the right side and near the top of the magnetic particle detector main unit, providing a power input interface for connecting to an external power source to supply power to the device.

[0008] The bottom of the magnetic particle detector is provided with a strip-shaped groove, which provides a moving platform and supports the sliding adjustment of the moving block to achieve flexible positioning of the components. A bidirectional screw is rotatably connected between the left and right sides of the inner wall of the strip-shaped groove and near the top. Two magnetic yoke components are threaded on the bidirectional screw. The two magnetic yoke components are adjusted to move synchronously by adjusting the bidirectional screw, thereby adjusting the distance between the two magnetic yoke components to adapt to different detection positions on the surface of the once-through boiler.

[0009] The magnetic yoke assembly includes a movable block connected to a bidirectional lead screw via a thread, responsible for moving along a strip groove to achieve position adjustment. The bottom of the movable block is provided with a base block, and the bottom of the base block is provided with a fixed magnetic yoke main rod to provide a stable magnetic field guide. The bottom of the fixed magnetic yoke main rod is rotatably connected to a movable magnetic yoke main rod, an adjustable magnetic field guide device. The bottom of the movable magnetic yoke main rod is rotatably connected to a magnetic yoke arm, which directly contacts the detection surface to form the magnetic field path required for detection.

[0010] The magnetic particle detector has a knob on the right side and near the bottom for driving the bidirectional lead screw to rotate, which allows for manual rotation of the bidirectional lead screw and convenient and quick adjustment of the distance between the two magnetic yoke components.

[0011] Preferably, the movable block is slidably connected in the strip groove, and the side of the movable block is provided with a threaded hole for a bidirectional lead screw to be threaded, so that the bidirectional lead screw can drive the movable block to move left and right.

[0012] Preferably, a positioning rod is provided between the left and right sides of the inner wall of the strip groove and near the bottom. A circular hole is provided on the side of the moving block for the positioning rod to pass through, which restricts and guides the movement of the moving block, avoids its lateral deviation, ensures linear sliding, and reduces the pressure of the bidirectional lead screw.

[0013] Preferably, the magnetic particle detector host has two first wiring ports on the rear side, and each of the two base blocks has a second wiring port on the rear side. The two first wiring ports are electrically connected to the two second wiring ports through wires to transmit current and signals. The wires have a certain length and can move with the base blocks.

[0014] Preferably, the bottom of both the front and rear sides of the magnetic particle detector is equipped with a detection light. The detection light works synchronously with the magnetic particle detector to illuminate the working area, making it easier to observe the surface condition of the object being tested during the inspection.

[0015] Preferably, the bottom of the fixed magnetic yoke main rod is provided with a first connecting protrusion, and the top of the movable magnetic yoke main rod is provided with a first connecting groove. The first connecting protrusion is positioned in the first connecting groove by a first locking bolt to fix the first connecting protrusion in the first connecting groove and ensure the stability of the magnetic yoke assembly.

[0016] Preferably, the bottom of the movable magnetic yoke main rod is provided with a second connecting protrusion to provide additional adjustment and fixing points, and the top of the magnetic yoke arm is provided with a second connecting groove. The second connecting protrusion is positioned in the second connecting groove by a second locking bolt to fix the second connecting protrusion in the second connecting groove and maintain the stable state of the magnetic yoke assembly.

[0017] Compared with the prior art, the beneficial effects of this utility model are:

[0018] 1. This portable magnetic particle inspection device for once-through boilers, through the design of a bidirectional lead screw and knob, allows for rapid adjustment of the distance of the magnetic yoke assembly to adapt to different inspection needs. This significantly reduces the need for operators to make frequent and complex adjustments during the inspection process, thereby improving work efficiency.

[0019] 2. The portable once-through boiler surface magnetic particle inspection and flaw detection equipment features a design with a fixed magnetic yoke main rod and a movable magnetic yoke main rod, which enables the magnetic yoke arm to maintain a stable and effective magnetic field path between different detection positions, thereby improving the accuracy and reliability of the inspection.

[0020] 3. This portable once-through boiler surface magnetic particle inspection and flaw detection equipment features a handle slot on the main unit of the magnetic particle detector, making the equipment more convenient to carry and operate. In addition, the compact design of the overall structure of the equipment ensures rapid deployment and use in various industrial sites, significantly improving the flexibility and practicality of the equipment.

[0021] 4. The portable once-through boiler surface magnetic particle inspection and flaw detection equipment uses a first connecting protrusion and a first locking bolt, and a second connecting protrusion and a second locking bolt to stably connect the components, which not only provides reliable mechanical stability, but also simplifies the assembly and maintenance process of the equipment. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the overall first-view structure of this utility model;

[0023] Figure 2 This is a schematic diagram of the overall second-view structure of this utility model;

[0024] Figure 3 This is a partial structural schematic diagram of the present invention;

[0025] Figure 4 This is a schematic diagram of the magnetic yoke assembly structure in this utility model;

[0026] In the diagram: 1. Magnetic particle detector main unit; 10. Handle groove; 11. Power interface; 12. Switch button; 13. Strip groove; 14. First wiring port; 2. Bidirectional lead screw; 20. Knob; 3. Magnetic yoke assembly; 30. Moving block; 300. Threaded hole; 301. Circular hole; 31. Base block; 32. Fixed magnetic yoke main rod; 320. First connecting protrusion; 33. Movable magnetic yoke main rod; 330. First connecting groove; 331. Second connecting protrusion; 34. Magnetic yoke arm; 340. Second connecting groove; 35. Second wiring port; 36. First locking bolt; 37. Second locking bolt; 4. Wire; 5. Detector light; 6. Positioning rod. 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] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or component 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 utility model.

[0029] Please see Figures 1-4 This utility model provides a technical solution:

[0030] The portable magnetic particle inspection and flaw detection equipment for the surface of a once-through boiler includes a magnetic particle detector main unit 1, which serves as the core control unit of the equipment and is responsible for the overall operation management and signal processing of the equipment. The front side of the magnetic particle detector main unit 1 is provided with a handle groove 10, which is convenient for carrying and for the operator to hold the equipment, increasing the convenience and mobility of the equipment. A switch button 12 is provided at the top of the inner wall of the handle groove 10 and near the left end, which is used to turn the power of the equipment on and off and control the working status of the equipment. A power interface 11 is provided on the right side of the magnetic particle detector main unit 1 and near the top, which provides a power input interface for connecting an external power source to supply power to the equipment.

[0031] The bottom of the magnetic particle detector main unit 1 is provided with a strip-shaped slide groove 13, which provides a moving platform and supports the sliding adjustment of the moving block 30 to achieve flexible positioning of the components. A bidirectional screw 2 is rotatably connected between the left and right sides of the inner wall of the strip-shaped slide groove 13 and near the top. Two magnetic yoke components 3 are threaded on the bidirectional screw 2. The two magnetic yoke components 3 are adjusted to move synchronously by adjusting the bidirectional screw 2, thereby adjusting the distance between the two magnetic yoke components 3 to adapt to different detection positions on the surface of the once-through boiler.

[0032] The magnetic yoke assembly 3 includes a movable block 30, which is connected to the bidirectional lead screw 2 by a thread and is responsible for moving along the strip groove 13 to achieve position adjustment. The bottom of the movable block 30 is provided with a bottom block 31, and the bottom of the bottom block 31 is provided with a fixed magnetic yoke main rod 32 to provide a stable magnetic field guide. The bottom of the fixed magnetic yoke main rod 32 is rotatably connected to a movable magnetic yoke main rod 33, which is an adjustable magnetic field guide device. The bottom of the movable magnetic yoke main rod 33 is rotatably connected to a magnetic yoke arm 34, which directly contacts the detection surface to form the magnetic field path required for detection.

[0033] On the right side and near the bottom of the magnetic particle detector main unit 1, there is a knob 20 for driving the bidirectional lead screw 2 to rotate, which is used to manually drive the rotation of the bidirectional lead screw 2 and facilitate quick adjustment of the distance between the two magnetic yoke components 3.

[0034] In this embodiment, the movable block 30 is slidably connected in the strip groove 13. The side of the movable block 30 is provided with a threaded hole 300 for the bidirectional lead screw 2 to be threadedly connected, so that the bidirectional lead screw 2 can drive the movable block 30 to move left and right.

[0035] Specifically, a positioning rod 6 is provided between the left and right sides of the inner wall of the strip groove 13 and near the bottom. A circular hole 301 is provided on the side of the moving block 30 for the positioning rod 6 to pass through, which restricts and guides the movement of the moving block 30, prevents it from shifting laterally, ensures linear sliding, and reduces the pressure on the bidirectional lead screw 2.

[0036] Furthermore, the magnetic particle detector host 1 has two first wiring ports 14 on the rear side, and the two base blocks 31 each have a second wiring port 35 on the rear side. The two first wiring ports 14 are electrically connected to the two second wiring ports 35 through wires 4 to transmit current and signals. The wires 4 have a certain length and can move with the base blocks 31.

[0037] Furthermore, the bottom of both the front and rear sides of the magnetic particle detector 1 is equipped with detection lights 5. The detection lights 5 work synchronously with the magnetic particle detector 1 to illuminate the working area, making it easier to observe the surface condition of the object being tested during the inspection.

[0038] Furthermore, the bottom of the fixed magnetic yoke main rod 32 is provided with a first connecting protrusion 320, and the top of the movable magnetic yoke main rod 33 is provided with a first connecting groove 330. The first connecting protrusion 320 is positioned in the first connecting groove 330 by the first locking bolt 36, which is used to fix the first connecting protrusion 320 in the first connecting groove 330 to ensure the stability of the magnetic yoke assembly.

[0039] Furthermore, the bottom of the movable magnetic yoke main rod 33 is provided with a second connecting protrusion 331, which provides additional adjustment and fixing points. The top of the magnetic yoke arm 34 is provided with a second connecting groove 340. The second connecting protrusion 331 is positioned in the second connecting groove 340 by the second locking bolt 37, which is used to fix the second connecting protrusion 331 in the second connecting groove 340 and maintain the stable state of the magnetic yoke assembly.

[0040] In this embodiment, the portable once-through boiler surface magnetic particle inspection device is carried to the vicinity of the once-through boiler to be tested using the handle slot 10. Ensure the inspection area is clean and free of obvious dirt. Connect the power interface 11 to ensure the device is powered on and ready for operation. Turn on the device's switch button 12 to start the device. According to the inspection requirements, manually drive the bidirectional lead screw 2 using the knob 20 to adjust the spacing between the magnetic yoke components 3 to suit the specific inspection area. Use the bidirectional lead screw 2 to adjust the position of the moving block 30 so that the two magnetic yoke components 3 are located on both sides of the boiler weld or other critical parts to be inspected, ensuring that the moving block 30 moves freely within the strip groove 13. The sliding mechanism precisely positions the moving block 30 as needed. Once the equipment is in position, the detection light 5 is simultaneously turned on when the switch button 12 is pressed, illuminating the detection area so that the operator can observe surface changes and magnetic powder accumulation. Then, the operator directly sprays magnetic powder onto the surface to be tested, observing any abnormal accumulation of magnetic powder on the surface to identify potential defects. After the test is completed, the presence of surface cracks or defects is determined based on the concentration of magnetic powder. If an abnormality is detected, it is marked and further analyzed to determine subsequent operations. After the test is completed, the switch button 12 is turned off, the power connection is removed, and the equipment is cleaned, especially the magnetic yoke assembly 3, to ensure no residue is left.

[0041] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A portable magnetic particle inspection device for the surface of a once-through boiler, comprising a magnetic particle detector main unit (1), wherein a handle groove (10) is provided on the front side of the magnetic particle detector main unit (1), a switch button (12) is provided at the top and near the left end of the inner wall of the handle groove (10), and a power interface (11) is provided on the right side and near the top of the magnetic particle detector main unit (1), characterized in that: The bottom of the magnetic particle detector main unit (1) is provided with a strip-shaped groove (13). A bidirectional lead screw (2) is rotatably connected between the left and right sides of the inner wall of the strip-shaped groove (13) and near the top. Two magnetic yoke assemblies (3) are threaded on the bidirectional lead screw (2). The magnetic yoke assembly (3) includes a moving block (30). The bottom of the moving block (30) is provided with a bottom block (31). The bottom of the bottom block (31) is provided with a fixed magnetic yoke main rod (32). The bottom of the fixed magnetic yoke main rod (32) is rotatably connected with a movable magnetic yoke main rod (33). The bottom of the movable magnetic yoke main rod (33) is rotatably connected with a magnetic yoke arm (34). A knob (20) for driving the bidirectional lead screw (2) to rotate is provided on the right side of the magnetic particle detector main unit (1) near the bottom.

2. The portable magnetic particle inspection device for the surface of a once-through boiler according to claim 1, characterized in that: The movable block (30) is slidably connected in the strip groove (13), and the side of the movable block (30) is provided with a threaded hole (300) for threaded connection of the bidirectional lead screw (2).

3. The portable magnetic particle inspection device for the surface of a once-through boiler according to claim 1, characterized in that: A positioning rod (6) is provided between the left and right sides of the inner wall of the strip groove (13) and near the bottom. A circular hole (301) is provided on the side of the moving block (30) for the positioning rod (6) to pass through.

4. The portable magnetic particle inspection device for the surface of a once-through boiler according to claim 1, characterized in that: The magnetic particle detector host (1) has two first wiring ports (14) on its rear side, and the two bottom blocks (31) each have a second wiring port (35) on their rear side. The two first wiring ports (14) are electrically connected to the two second wiring ports (35) respectively through wires (4).

5. The portable magnetic particle inspection device for the surface of a once-through boiler according to claim 1, characterized in that: The magnetic particle detector main unit (1) is equipped with detection lights (5) on the bottom of both the front and rear sides.

6. The portable magnetic particle inspection device for the surface of a once-through boiler according to claim 1, characterized in that: The bottom of the fixed magnetic yoke main rod (32) is provided with a first connecting protrusion (320), and the top of the movable magnetic yoke main rod (33) is provided with a first connecting groove (330). The first connecting protrusion (320) is positioned in the first connecting groove (330) by a first locking bolt (36).

7. The portable magnetic particle inspection device for the surface of a once-through boiler according to claim 1, characterized in that: The bottom of the movable magnetic yoke main rod (33) is provided with a second connecting protrusion (331), and the top of the magnetic yoke arm (34) is provided with a second connecting groove (340). The second connecting protrusion (331) is positioned in the second connecting groove (340) by a second locking bolt (37).

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