Visual magnetic defect detector

Abstract

The visual magnetic defect detector comprises a power supply, a machine body, a control unit, a flaw detection module and a shooting module, the control unit is installed in the machine body, the power supply is electrically connected with the control unit, the flaw detection module and the shooting module are installed at the position of the machine body, and the machine body comprises a handle, an extension tube and a universal bent tube; according to the visual magnetic defect detector, the bending angles of the flaw detection module and the shooting module can be adjusted through the universal bending pipe, so that the visual magnetic defect detector can detect a bending area in equipment; meanwhile, the flaw detection module is detachably mounted, so that a user can conveniently replace flaw detection modules with different sizes, and the flaw detector can detect the damage of different gap space positions of the equipment; through the shooting module, the picture of the detection part can be checked in real time while the flaw detection module works; the visual magnetic defect detector is high in universality, can be applied to different spaces for flaw detection of equipment, can shoot pictures at flaw detection parts in real time, and is convenient for a user to operate and use.

Description

Technical Field

[0001] The utility model relates to the technical field of magnetic detectors, in particular to a visual magnetic particle flaw detector. Background Art

[0002] During the casting and forging process, the core of the steam turbine and generator rotors used in power plants often has defects such as low-melting-point slag inclusions and pores. Since the rotors are running at high speed, these defects, especially those on the surface of the hole wall, are easily affected by alternating stress during operation and fatigue cracks are generated. In addition, during the daily use of the dense header pipe base, steam turbine, generator rotors, and valve body inner wall of thermal power plants, they need to be inspected and repaired in time to ensure the normal operation of the equipment. Therefore, flaw detection is required.

[0003] Magnetic particle flaw detector, also known as magnetic detector, uses magnetic flaw detection method to detect equipment. Magnetic flaw detection method is the most commonly used method in non-destructive testing. It realizes non-destructive flaw detection of the inspected object based on the property that when the magnetic beam passes through the magnetic pole, the cracks and other defects have the property of absorbing and accumulating magnetic particles.

[0004] The magnetic probe of the existing magnetic detector is fixed and cannot be replaced, which is inconvenient for users to use the magnetic detector to perform flaw detection operations in spaces of different sizes of the equipment. In addition, the detection angle of the existing magnetic probe cannot be changed, making it difficult to detect curved spaces within the equipment. At the same time, the existing magnetic detector needs to be used together with an endoscope, and two devices need to be operated at the same time, which is cumbersome to operate and inconvenient for users. Utility Model Content

[0005] In order to solve the above technical problems, a visual magnetic particle flaw detector is provided, which is convenient for flaw detection of equipment and for photographing and viewing the images of the flaw detection parts of the equipment, so as to facilitate user operation and use.

[0006] In order to achieve the above purpose, the following scheme is provided: a visual magnetic particle flaw detector, including a power supply, a body, a control unit, a flaw detection module and a shooting module, the control unit is installed in the body, the power supply is electrically connected to the control unit, the flaw detection module and the shooting module are installed in the body, the body includes a handle, an extension tube and a universal bending tube, one end of the extension tube is fixedly connected to one end of the handle, the other end of the extension tube is connected to one end of the universal bending tube, the shooting module is installed at the other end of the universal bending tube, the flaw detection module is installed at the end of the shooting module away from the universal bending tube, the shooting module includes an adjusting knob, a second connecting tube, a movable rod, a camera, a rotating wheel and a driving motor, the adjusting knob The button is installed on the handle and the adjustment knob is electrically connected to the control unit, one end of the second connecting tube is connected to the universal bending tube, the other end of the second connecting tube is connected to the flaw detection module, a movable groove is opened at the side wall of the second connecting tube, the movable rod is inserted into the movable groove and the movable rod is slidably connected in the movable groove, a camera is installed at the end of the movable rod located on the outside of the second connecting tube, the end of the movable rod inserted into the second connecting tube is fixedly connected to the side of the rotating wheel, the rotating wheel is located in the second connecting tube and the rotating wheel is rotatably connected to the second connecting tube, the driving motor is installed in the second connecting tube, the output shaft of the driving motor is connected to the rotating wheel by a key, and the driving motor and the camera are both electrically connected to the control unit.

[0007] Furthermore, the flaw detection module includes a first connecting tube and a magnetic probe, one end of the first connecting tube is connected to the second connecting tube, the other end of the first connecting tube is provided with the magnetic probe, and the magnetic probe is electrically connected to the control unit.

[0008] Furthermore, the control unit includes an operation display panel and a controller. The controller is installed in the handle, and the operation display panel is installed on the handle. The controller is electrically connected to the operation display panel, the magnetic probe, the drive motor, and the camera.

[0009] Furthermore, the power supply includes an external battery and a connecting wire, and the external battery is electrically connected to the controller via the connecting wire.

[0010] Furthermore, the universal bending tube is a stainless steel corrugated tube.

[0011] Furthermore, nuts are rotatably installed at both ends of the universal bending tube, an external thread is provided at one end of the second connecting tube close to the universal bending tube, and an external thread is provided at one end of the extension tube close to the universal bending tube. The two ends of the universal bending tube are detachably connected to the second connecting tube and the extension tube through nuts respectively.

[0012] Furthermore, a nut is rotatably mounted on one end of the second connecting pipe close to the first connecting pipe, an external thread is arranged on one end of the first connecting pipe close to the second connecting pipe, and the second connecting pipe is detachably connected to the first connecting pipe via the nut.

[0013] Furthermore, the extension pipe is a hard pipe.

[0014] Furthermore, a plurality of lighting lamp beads are arranged at the magnetic probe, and the lighting lamp beads are electrically connected to the controller.

[0015] Furthermore, the lighting lamp beads are LED lamp beads.

[0016] The working principle and advantages of the utility model are as follows: the visual magnetic particle flaw detector can adjust the bending angles of the flaw detection module and the shooting module through the universal bending tube, so that the flaw detector can detect the bending area in the equipment; at the same time, the flaw detection module can be detachably installed, which is convenient for users to replace the flaw detection modules of different sizes, so that the flaw detector can detect damage in different gap space positions of the equipment; and through the shooting module, the picture of the detection part can be viewed in real time while the flaw detection module is working; the visual magnetic particle flaw detector has strong versatility, can be used to detect equipment in different spaces, and can shoot the picture at the flaw detection part in real time, which is convenient for users to operate and use. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural diagram of the utility model;

[0018] Figure 2 It is a structural schematic diagram of the flaw detection module and the shooting module of the utility model;

[0019] Figure 3 It is a cross-sectional structural diagram of the shooting module of the utility model.

[0020] The reference numerals in the drawings of the specification include:

[0021] 11. Handle, 12. Connecting wire, 13. External battery, 14. Operation display panel, 15. Extension tube, 16. Universal bending tube, 21. First connecting tube, 22. Magnetic probe, 23. Illuminating lamp beads, 31. Adjustment knob, 32. Second connecting tube, 33. Movable slot, 34. Movable rod, 35. Camera, 36. Turntable, 37. Driving motor. DETAILED DESCRIPTION

[0022] The following is a further detailed description through specific implementation methods:

[0023] like Figures 1 to 3 As shown:

[0024] A visual magnetic particle flaw detector comprises a power supply, a body, a control unit, a flaw detection module and a shooting module, wherein the control unit is installed in the body, the power supply is electrically connected to the control unit, and the flaw detection module, the shooting module and the body are sequentially connected from top to bottom;

[0025] The body includes a handle 11, an extension tube 15 and a universal bending tube 16, and the three are connected in sequence. The extension tube 15 is a hard pipe, which is used to extend the length of the flaw detector extending into the equipment. The universal bending tube 16 is a stainless steel bellows. The universal bending tube 16 has a certain hardness and can be bent in multiple directions, which is convenient for adjusting the shooting and detection angles of the shooting module and the flaw detection module installed at its end; nuts are rotatably provided at both ends of the universal bending tube 16, so that the universal bending tube 16 can cooperate with the external thread at the end of the extension tube 15 through the nut, so that the universal bellows and the extension tube 15 can be detachably connected;

[0026] The shooting module includes an adjustment knob 31, a second connecting tube 32, a movable rod 34, a camera 35, a rotating wheel 36 and a driving motor 37. A nut is rotatably provided at one end of the second connecting tube 32, and an external thread is provided on the outer side of the other end thereof, so that the universal bending tube 16 can be detachably connected to the second connecting tube 32 through the nut and the external thread of the second connecting tube 32. The driving motor 37 is installed in the second connecting tube 32, and the output shaft of the driving motor 37 is connected to the rotating wheel 36 rotatably installed in the second connecting tube 32 through a key, so that the driving motor 37 can drive the rotating wheel 36 to rotate, and the rotating wheel 36 The side of the second connecting tube 32 is fixedly connected to one end of the movable rod 34. At the same time, a movable groove 33 is opened on the tube wall of the second connecting tube 32. The movable rod 34 passes through the movable groove 33 and extends to the outside of the second connecting tube 32. The movable rod 34 is slightly inclined toward one side of the flaw detection module. A camera 35 is installed at the end of the movable rod 34. Through the adjustment knob 31 installed at the handle 11, the user can control the drive motor 37 to drive the rotating wheel 36 to rotate in the second connecting tube 32. The rotation can drive the movable rod 34 to swing in the movable groove 33 in coordination with the camera 35, so that the user can adjust the shooting direction of the camera 35.

[0027] The flaw detection module includes a first connecting tube 21 and a magnetic probe 22. The first connecting tube 21 is provided with an external thread at one end close to the second connecting tube 32. The second connecting tube 32 is detachably connected to the first connecting tube 21 through a nut and the external thread of the first connecting tube 21. The other end of the first connecting tube 21 is provided with a magnetic probe 22. The magnetic probe 22 is an existing mature technology and will not be described here.

[0028] The control unit includes an operation display panel 14 and a controller. The controller is installed in the handle 11, and the operation display panel 14 is installed at the handle 11. The controller is electrically connected to the operation display panel 14, the magnetic probe 22, the drive motor 37, and the camera 35. The controller is an existing mature technology, and the user can design and configure it as needed.

[0029] The power supply includes an external battery 13 and a connecting wire 12. The external battery 13 is electrically connected to the controller via the connecting wire 12. An interface is provided at the handle 11, and a connector is provided at the connecting wire 12, so that the connecting wire 12 can be plugged into the handle 11, thereby conducting the external battery 13 and the controller.

[0030] A plurality of lighting lamp beads 23 are arranged on the detection side of the magnetic probe 22. The lighting lamp beads 23 are electrically connected to the controller. The lighting lamp beads 23 are LED lamp beads. The lighting lamp beads 23 are used to provide supplementary light to the part of the device to be detected.

[0031] The specific implementation process is as follows:

[0032] When using the visual magnetic particle flaw detector, the external battery 13 is connected to the controller through the connecting wire 12, the shooting module is installed on the universal bending tube 16, and the flaw detection module is installed on the shooting module; then the magnetic powder or magnetic suspension can be sprayed to the position of the device to be inspected, so that the magnetic powder or magnetic suspension covers the part to be inspected; then the universal bending tube 16 is bent to a suitable angle, and the shooting module and the flaw detection module are extended to the device, and the part of the device coated with magnetic powder is inspected; during the flaw detection, the user can start the magnetic probe 22 of the flaw detection module and the lighting lamp bead 23 set at the magnetic probe 22 through the operation display panel 14, so that the magnetic probe 22 can detect the device, and the magnetic probe 22 can also be controlled by the controller The detection data is transmitted back to the operation display panel 14; while the magnetic probe 22 is working, the shooting module can be started, and the camera 35 transmits the captured image back to the operation display panel 14 through the controller, so that the user can observe the image of the inspection part in real time, and then inspect the equipment through the image; at the same time, the user can operate the adjustment knob 31 to adjust the shooting direction of the camera 35, and the adjustment knob 31 transmits the signal to the controller, and the controller controls the drive motor 37 to start, and the drive motor 37 drives the rotating wheel 36 to rotate in the second connecting tube 32, and the rotating wheel 36 drives the movable rod 34 to swing in the movable groove 33, and the sliding groove can drive the camera 35 to swing together, so that the camera 35 can swing to shoot the picture.

[0033] The weakness is that the space where the equipment needs to be inspected is small. The user can remove the flaw detection module from the shooting module and install a smaller flaw detection module (that is, replace the small-sized magnetic probe 22). This allows the flaw detector to be used in a small space for flaw detection. If the space where the equipment needs to be inspected is large, the user can remove the flaw detection module from the shooting module and install a larger-sized flaw detection module (that is, replace the large-sized magnetic probe 22). This allows the flaw detector to increase the flaw detection range and improve the equipment's flaw detection efficiency.

[0034] This visual magnetic particle flaw detector can adjust the bending angles of the flaw detection module and the shooting module through the universal bending tube, so that this flaw detector can detect the bending area in the equipment; at the same time, the flaw detection module can be installed detachably, which is convenient for users to replace flaw detection modules of different sizes, so that this flaw detector can detect damage in different gap space positions of the equipment; and through the shooting module, the image of the detection part can be viewed in real time while the flaw detection module is working; this visual magnetic particle flaw detector has strong versatility, can be used to detect equipment in different spaces, and can take pictures of the image at the flaw detection part in real time, which is convenient for users to operate and use.

[0035] The above is only an embodiment of the utility model. The common sense such as the known specific structure and characteristics in the scheme is not described in detail here. The ordinary technicians in the relevant field know all the common technical knowledge in the technical field of the utility model before the application date or priority date, can obtain all the existing technologies in the field, and have the ability to apply the conventional experimental means before that date. The ordinary technicians in the relevant field can improve and implement this scheme in combination with their own abilities under the enlightenment given by this application. Some typical known structures or known methods should not become obstacles for ordinary technicians in the relevant field to implement this application. It should be pointed out that for the technicians in this field, without departing from the structure of the utility model, several deformations and improvements can be made, which should also be regarded as the protection scope of the utility model, which will not affect the effect of the implementation of the utility model and the applicability of the patent. The protection scope required by this application shall be based on the content of its claims, and the specific implementation methods and other records in the specification can be used to explain the content of the claims.

Claims

1. A visual magnetic particle flaw detector, characterized in that: The invention comprises a power supply, a machine body, a control unit, a flaw detection module and a shooting module, wherein the control unit is installed in the machine body, the power supply is electrically connected to the control unit, the flaw detection module and the shooting module are installed in the machine body, the machine body comprises a handle, an extension tube and a universal bending tube, one end of the extension tube is fixedly connected to one end of the handle, the other end of the extension tube is connected to one end of the universal bending tube, the shooting module is installed at the other end of the universal bending tube, the flaw detection module is installed at one end of the shooting module away from the universal bending tube, the shooting module comprises an adjusting knob, a second connecting tube, a movable rod, a camera, a rotating wheel and a driving motor, the adjusting knob is installed at the handle and the adjusting knob is connected to the universal bending tube. The control unit is electrically connected, one end of the second connecting tube is connected to the universal bending tube, the other end of the second connecting tube is connected to the flaw detection module, a movable groove is opened at the side wall of the second connecting tube, the movable rod is inserted into the movable groove and the movable rod is slidably connected in the movable groove, a camera is installed at the end of the movable rod located on the outside of the second connecting tube, the end of the movable rod inserted into the second connecting tube is fixedly connected to the side of the rotating wheel, the rotating wheel is located in the second connecting tube and the rotating wheel is rotatably connected to the second connecting tube, the driving motor is installed in the second connecting tube, the output shaft of the driving motor is connected to the rotating wheel by a key, and the driving motor and the camera are both electrically connected to the control unit.

2. The visual magnetic particle flaw detector according to claim 1, characterized in that: The flaw detection module includes a first connecting tube and a magnetic probe, one end of the first connecting tube is connected to the second connecting tube, the other end of the first connecting tube is provided with a magnetic probe, and the magnetic probe is electrically connected to the control unit.

3. The visual magnetic particle flaw detector according to claim 1, characterized in that: The control unit includes an operation display panel and a controller. The controller is installed in the handle, and the operation display panel is installed on the handle. The controller is electrically connected to the operation display panel, the magnetic probe, the drive motor, and the camera.

4. The visual magnetic particle flaw detector according to claim 1, characterized in that: The power source includes an external battery and a connecting wire, and the external battery is electrically connected to the controller through the connecting wire.

5. The visual magnetic particle flaw detector according to claim 1, characterized in that: The universal bending tube is a stainless steel corrugated tube.

6. The visual magnetic particle flaw detector according to claim 1, characterized in that: Nuts are rotatably installed at both ends of the universal bending tube, an external thread is provided at one end of the second connecting tube close to the universal bending tube, and an external thread is provided at one end of the extension tube close to the universal bending tube. The two ends of the universal bending tube are detachably connected to the second connecting tube and the extension tube through nuts respectively.

7. The visual magnetic particle flaw detector according to claim 1, characterized in that: A nut is rotatably mounted on one end of the second connecting pipe close to the first connecting pipe, an external thread is arranged on one end of the first connecting pipe close to the second connecting pipe, and the second connecting pipe is detachably connected to the first connecting pipe via the nut.

8. The visual magnetic particle flaw detector according to claim 1, characterized in that: The extension pipe is a hard pipe.

9. The visual magnetic particle flaw detector according to claim 2, characterized in that: A plurality of lighting lamp beads are arranged at the magnetic probe, and the lighting lamp beads are electrically connected to the controller.

10. The visual magnetic particle flaw detector according to claim 9, characterized in that: The lighting lamp beads are LED lamp beads.

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