Part test platform of magnetic flux leakage detection device

Abstract

The utility model discloses a part testing platform of a magnetic flux leakage testing device, and mainly relates to the technical field of testing of magnetic flux leakage testing equipment. Comprising a supporting mechanism, a rotation testing mechanism and a data acquisition and control mechanism, the supporting mechanism comprises supporting legs, a supporting platform and a tested workpiece, the supporting platform comprises a supporting plate and a support, the support is arranged on the bottom surface of the supporting plate, one end of each supporting leg is in bolted connection with the support, and the other end of each supporting leg is in buckled connection with the tested workpiece. And the rotating mechanism is arranged on the top surface of the supporting plate. The beneficial effects of the utility model lie in that the development and test efficiency of elements related to the intelligent detection technology is improved, the test of the elements related to the intelligent detection technology can be realized, the operation is convenient, and the time and the cost are saved.

Description

Technical Field

[0001] The utility model relates to the technical field of testing magnetic flux leakage detection equipment, in particular to a testing platform for parts of magnetic flux leakage detection devices. Background Art

[0002] The research and development of magnetic flux leakage detection equipment involves three major parts: mechanical part, electrical part and data processing part. The quality of the detection equipment is not only reflected in the detection capability, but also in the durability of the parts. Taking the internal detector as an example, in the past pipeline inspection work, there have been many cases where the support wheel, mileage wheel and probe and other parts were excessively worn, and effective detection could not be achieved, resulting in huge economic losses. Therefore, in order to ensure the normal progress of pipeline inspection work, the wear resistance of these important parts must be guaranteed to be qualified.

[0003] The existing test platforms are generally simple in function and can only perform wear or impact resistance tests on signal acquisition probes, wheel bodies and other components, but cannot test the detection capabilities of magnetic leakage, eddy current, and deformation probes.

[0004] Although there are multifunctional test platforms that can rotate test objects such as cylinders, pipes, and discs, the power consumption is too high and the safety is low.

[0005] Therefore, a new comprehensive testing platform for the core components of magnetic flux leakage detection devices is urgently needed to solve the above problems. Utility Model Content

[0006] The purpose of the utility model is to provide a magnetic flux leakage detection device component testing platform, which improves the efficiency of component development and testing related to intelligent detection technology, and can also realize the testing of components related to intelligent detection technology, which is easy to operate and saves time and cost.

[0007] In order to achieve the above-mentioned purpose, the utility model is realized through the following technical solutions:

[0008] The main structure includes a supporting mechanism, a rotating testing mechanism and a data acquisition and control mechanism. The supporting mechanism includes supporting legs, a supporting platform and a workpiece to be measured. The supporting platform includes a supporting plate and a bracket. The bracket is arranged on the bottom surface of the supporting plate. One end of the supporting leg is bolted to the bracket, and the other end is snap-connected to the workpiece to be measured. The rotating mechanism is arranged on the top surface of the supporting plate.

[0009] Preferably, the supporting legs are provided in a plurality and are arranged in a circular array with the supporting platform as the center, including a supporting leg, wherein the supporting leg is specifically an L-shaped plate structure, a lower limit support is provided at the end of the supporting leg, an upper limit support is provided at the top of the lower limit support, and an arc-shaped polyurethane cushioning material is adhered to one side of the upper limit support and the lower limit support.

[0010] Preferably, the rotating test mechanism includes a sensor module, a bracket module, a rotating platform, a large hollow aperture DD motor and a slip ring. The large hollow aperture DD motor is arranged on the top surface of the supporting platform. The rotating platform is specifically a circular pie-shaped structure, which is arranged on the top of the large hollow aperture DD motor. The bracket modules are provided in a plurality and are arranged in a circular array with the center of the rotating platform as the center. One end of the bracket module is connected to the rotating platform, and the other end is connected to the sensor module. The slip ring is arranged at the bottom end of the large hollow aperture DD motor.

[0011] Preferably, the sensor module is provided with a magnetic flux leakage detection module, a geometric deformation detection module and a mileage wheel module.

[0012] Preferably, the bracket module includes a rotating bracket, a telescopic structure, a moving distance indicating window and a telescopic bracket, the rotating bracket is arranged on a rotating platform, the telescopic bracket is connected to the sensor module, the telescopic structure is specifically a worm gear structure, connected between the telescopic bracket and the rotating bracket, and the moving distance indicating window is arranged on the upper surface of the rotating bracket.

[0013] Preferably, the data acquisition and control mechanism specifically includes: a host computer, a PLC control system, a frequency converter, a current control module, a safety interlock protection system and a high-speed camera, the host computer is respectively connected to the high-speed camera, the PLC control system and the slip ring data, the PLC control system is respectively electrically connected to the safety interlock protection system and the current control module, the current control module is electrically connected to the slip ring, the PLC control system is electrically connected to the frequency converter, and the slip ring is respectively electrically connected to the junction box and the electromagnet.

[0014] Compared with the prior art, the beneficial effects of the present invention are:

[0015] 1. By rotating the probe module, the requirements for the motor are low, and the overall mass will be lighter, reducing the operating risks and dangers.

[0016] 2. Directly driven by DD motor, the speed is controlled by PLC control system, which can achieve speed adjustment capability of 0~10m / s+. At the same time, the overall mass of the rotating bracket and the probe module is not large, and the performance of DD motor itself is sufficient to stop.

[0017] 3. The installation of slip rings enables the platform to not only have the ability to perform wear resistance tests, but also to collect probe signals, thus becoming a magnetic flux leakage detection performance test platform.

[0018] 4. Various types of defects can be made inside and outside the circular pipe, and the dynamic detection capability of magnetic leakage can be verified by adjusting the rotation speed.

[0019] 5. The magnetic flux leakage detection module is a replaceable module. It can be replaced with a permanent magnet module or an electromagnetic module. The electromagnetic module can change the size of the excitation magnetic field by adjusting the excitation current.

[0020] 6. Magnetic flux leakage detection module: Rely on the probe to detect and pick up the magnetic signals leaked by the pipe wall defects. These signals are processed and stored in the detector electronic package, and then the data is analyzed by special software. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is the front view of the utility model.

[0022] Figure 2 It is a schematic diagram of the support mechanism of the utility model.

[0023] Figure 3 It is a partial structural schematic diagram of the support mechanism of the utility model.

[0024] Figure 4 It is a schematic diagram of the rotary testing mechanism of the utility model.

[0025] Figure 5 It is a partial structural schematic diagram of the practical rotation testing mechanism.

[0026] Figure 6 It is a schematic diagram of the local structure of the support module of the utility model.

[0027] Figure 7 It is a schematic diagram of the sensor module of the present utility model.

[0028] Figure 8 It is a schematic diagram of a magnetic flux leakage detection module of the present utility model.

[0029] Fig. 9 It is a schematic diagram of a geometric deformation detection module of the present utility model.

[0030] Fig.10 It is a schematic diagram of the mileage wheel module of the utility model.

[0031] Fig.11 It is a schematic diagram of the data acquisition and control mechanism of the utility model.

[0032] Numbers shown in the accompanying drawings:

[0033] 1. Tested workpiece; 2. Rotating test mechanism; 3. Support mechanism; 4. Support legs; 5. Support plate; 6. Bracket; 7. Upper limit support; 8. Lower limit support; 9. Polyurethane buffer material; 10. Rotating platform; 11. Magnetic flux leakage detection module; 12. Bracket module; 13. DD motor; 14. Slip ring; 15. Pin mechanism; 16. Fixed ring; 17. Telescopic structure; 18. Moving distance indication window; 19. Telescopic bracket; 20. Odometer wheel module; 21. Geometric deformation detection module; 22. Armature; 23. Permanent magnet; 24. One-to-eight junction box; 25. Steel brush fixing bracket; 26. Steel brush; 27. Leakage magnetic sensor fixing bracket; 28. Leakage magnetic probe tension spring; 29. ​​Leakage magnetic probe bracket; 30. Leakage magnetic probe; 31. ID / OD fixed support; 32. One-to-six junction box; 33. ID / OD probe tension spring; 34. ID / OD probe bracket; 35. ID / OD probe; 36. Mileage wheel fixing support; 37. Compression spring; 38. Mileage wheel. DETAILED DESCRIPTION

[0034] The present invention is further described below in conjunction with specific embodiments. It should be understood that these embodiments are only used to illustrate the present invention and are not used to limit the scope of the present invention. In addition, it should be understood that after reading the content taught by the present invention, those skilled in the art can make various changes or modifications to the present invention, and these equivalent forms also fall within the scope defined by the present application.

[0035] In the present invention, terms such as "upper", "lower", "left", "right", "front", "back", "vertical", "horizontal", "side", "bottom", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings. They are relational words determined only for the convenience of describing the structural relationships of the various parts or elements of the present invention, and do not specifically refer to any part or element in the present invention and should not be understood as limitations on the present invention.

[0036] In the present invention, terms such as "fixed connection", "connected", "connection", etc. should be understood in a broad sense, indicating that it can be fixedly connected, integrally connected or detachably connected; it can be directly connected or indirectly connected through an intermediate medium. Relevant scientific research or technical personnel in this field can determine the specific meanings of the above terms in the present invention according to specific circumstances, and they should not be understood as limiting the present invention.

[0037] Example:

[0038] like Figure 1As shown, the main structure includes a supporting mechanism, a rotating test mechanism and a data acquisition and control mechanism, the supporting mechanism includes supporting legs, a supporting platform and a workpiece to be measured, the supporting platform includes a supporting plate and a bracket, the bracket is arranged on the bottom surface of the supporting plate, one end of the supporting leg is bolted to the bracket, and the other end is snap-connected to the workpiece to be measured, the bottom end of the bracket is fixed to the ground with anchor bolts, and the rotating mechanism is arranged on the top surface of the supporting plate, wherein the workpiece to be measured is mainly annular pipes, and various types of welding defects, metal loss defects, adjacent defects, pipe defects, deformation defects, etc. can be processed on the pipes.

[0039] In this embodiment, the support plate is a regular pentagonal plate structure, and four first screw holes are set through the top surface of the support plate. The bracket is inclined toward the outside of the support plate at a certain angle with the support plate, and five screw holes are set in a one-to-one correspondence with the side edges of the support plate. The bracket is connected to the support plate in an integral manner.

[0040] The supporting legs are provided in a plurality and arranged in a circular array with the center of the supporting platform as the center. Figure 2 As shown, it includes a leg, which is specifically an L-shaped plate structure, and one end of the leg is fixedly connected to the bracket, such as Figure 3 As shown, the end of the support leg is connected to the lower limit support by bolts, and the lower limit support is specifically an L-shaped plate structure, wherein the short side of the lower limit support is bolted to the support leg, and the top of the lower limit support is connected to the upper limit support by bolts, and the upper limit support is specifically an inverted J-shaped plate structure, wherein the bottom of the long side of the upper limit support is bolted to the lower limit support, and the inner side of the short side of the upper limit support and the inner side of the lower limit support are adhered with arc-shaped polyurethane buffer material, which is beneficial to the fixation of the measured workpiece and the reduction of vibration and displacement during operation, wherein the snap connection method between the measured workpiece and the support leg is specifically as follows: the J-shaped structure of the upper limit support clamps the measured workpiece on the inside.

[0041] like Figure 4As shown, the rotation test mechanism includes a sensor module, a bracket module, a rotating platform, a large hollow aperture DD motor and a slip ring. The DD motor is connected to the top surface of the support platform through a first screw hole and in cooperation with a bolt. The rotating platform is specifically a circular pancake structure, fixedly connected to the output end of the DD motor. The bracket module is provided with a plurality of bracket modules and is arranged in a circular array with the center of the rotating platform as the center. One end of the bracket module is connected to the rotating platform through a pin mechanism, and a fixing ring is provided near the connection end. The fixing ring is a convex plate-like structure, fixedly connected to the rotating platform through bolts, and sleeved on the outside of the bracket module. The other end is connected to the sensor module. The slip ring is provided at the bottom end of the DD motor. The function of the slip ring is to provide a current and signal transmission channel for the test piece, and can power the test pieces that need to be connected to a power supply, such as an electromagnet, a leakage magnetic probe, an eddy current probe, and a deformation probe, and can transmit the signal collected by the probe.

[0042] like Figure 5 As shown, the support module includes a rotating support, a telescopic structure, a moving distance indicating window and a telescopic support. The rotating support is arranged on a rotating platform, and the telescopic support is connected to the sensor module. Figure 6 As shown, the telescopic structure is specifically a worm gear structure, which is connected between the telescopic bracket and the rotating bracket. The telescopic bracket is extended or shortened by rotating the handle. The moving distance indication window is set on the upper surface of the rotating bracket, and the value on the indication bar directly above the telescopic distance can be observed.

[0043] like Figure 7 As shown, the sensor module is provided with a magnetic flux leakage detection module, a geometric deformation detection module and an odometer module, which can not only realize the verification of wear resistance, but also can be used to verify the detection capability of the detection device for defects, study the influence of speed on the detection effect, etc. Figure 8 As shown, the magnetic flux leakage detection module is a replaceable module, specifically including a long strip armature, wherein the left end of the top surface of the armature is provided with an eight-way junction box, which is mainly used to connect the magnetic flux leakage probe and can be powered, and permanent magnets are respectively provided at both ends of the bottom surface of the armature, and a group of steel brush fixing brackets are respectively provided on the inner sides of the two permanent magnets, and steel brushes are provided on the steel brush fixing brackets, and a magnetic flux leakage sensor fixing bracket is provided in the middle position of the bottom surface of the armature, and a magnetic flux leakage probe stretching spring is provided on the magnetic flux leakage sensor fixing bracket, and the end of the magnetic flux leakage probe stretching spring is connected to the magnetic flux leakage probe bracket, and the end of the magnetic flux leakage probe bracket is connected to the magnetic flux leakage probe, wherein the geometric deformation detection module and the mileage wheel module are a group, as shown Fig. 9 As shown, the geometric deformation detection module includes an ID / OD fixed support, the bottom surface of the ID / OD fixed support is connected to the ID / OD probe module by bolts, and the top surface of the ID / OD fixed support is provided with a one-to-six junction box, as shown in FIG. Fig.10As shown, the mileage wheel module includes a mileage wheel fixing support, on which a compression spring is provided, and the mileage wheel is connected to the mileage wheel fixing support via a connecting rod. The compression spring always keeps the tension of the mileage wheel, and when the mileage wheel is subjected to pressure, the lever rod contracts, thereby compressing the spring. The one-to-six junction box is mainly used to connect the IO / OD probe and the mileage wheel sensor. In this embodiment, the specific arrangement of the sensor module is as follows: at the ends of the two bracket modules located on the same horizontal line, a leakage magnetic detection module, a geometric deformation detection module, and a mileage wheel module are respectively provided, as shown in FIG. Figure 7 shown.

[0044] like Fig.11 As shown, the data acquisition and control mechanism specifically includes: a host computer, a PLC control system, a frequency converter, a current control module, a safety interlock protection system and a high-speed camera. The host computer is respectively connected to the high-speed camera, the PLC control system and the slip ring data. The PLC control system is respectively electrically connected to the safety interlock protection system and the current control module. The current control module is electrically connected to the slip ring. The PLC control system is electrically connected to the frequency converter. The slip ring is respectively electrically connected to the junction box and the electromagnet. In this embodiment, the host computer is a desktop computer that can be purchased on the market, which is used to collect data from the high-speed camera, the PLC control system and the slip ring. The PLC control system is an ordinary PLC control cabinet. The host computer and the PLC control system are placed at a certain distance from the operation site. The operation site work has the characteristics of safety protection. The safety interlock protection system is activated during normal operation. The current control module is used to power the electromagnet. The junction box is used to transmit the collected sensor signal to the host computer. The high-speed camera captures the information of the components.

[0045] Assemble the sensor module, fix the sensor module and the telescopic bracket of the bracket module, place the bracket module on the rotating platform, fix the rotating bracket and the rotating platform with a fixing ring, rotate the telescopic mechanism, and adjust the sensor module to a suitable position away from the workpiece to be measured.

[0046] Turn on the safety protection system. Enter the control room, turn on the control system, set the power supply parameters, the rotation speed or number of DD motors, start the control equipment, and observe the dynamics of the components through high-speed cameras.

[0047] The collected sensor signals are collected in the junction box and then transmitted to the host computer through the slip ring.

Claims

1. A magnetic flux leakage detection device component testing platform, characterized in that: It includes a supporting mechanism, a rotating testing mechanism and a data acquisition and control mechanism. The supporting mechanism includes supporting legs, a supporting platform and a workpiece to be measured. The supporting platform includes a supporting plate and a bracket. The bracket is arranged on the bottom surface of the supporting plate. One end of the supporting leg is bolted to the bracket, and the other end is snap-connected to the workpiece to be measured. The rotating testing mechanism is arranged on the top surface of the supporting plate.

2. A magnetic flux leakage detection device component testing platform according to claim 1, characterized in that: The supporting legs are provided in a plurality and are arranged in a circular array with the supporting platform as the center, including supporting legs, wherein the supporting legs are specifically L-shaped plate structures, a lower limit support is provided at the end of the supporting legs, an upper limit support is provided at the top of the lower limit support, and arc-shaped polyurethane cushioning material is adhered to one side of the upper limit support and the lower limit support.

3. A magnetic flux leakage detection device component testing platform according to claim 1, characterized in that: The rotation test mechanism includes a sensor module, a bracket module, a rotating platform, a large hollow aperture DD motor and a slip ring. The DD motor is arranged on the top surface of the support platform. The rotating platform is specifically a circular pie-shaped structure, which is arranged on the top of the DD motor. The bracket modules are arranged in a circular array with the center of the rotating platform as the center. One end of the bracket module is connected to the rotating platform, and the other end is connected to the sensor module. The slip ring is arranged at the bottom end of the DD motor.

4. A magnetic flux leakage detection device component testing platform according to claim 3, characterized in that: The sensor module is provided with a magnetic flux leakage detection module, a geometric deformation detection module and an odometer module.

5. A magnetic flux leakage detection device component testing platform according to claim 3, characterized in that: The bracket module includes a rotating bracket, a telescopic structure, a moving distance indicating window and a telescopic bracket. The rotating bracket is arranged on a rotating platform. The telescopic bracket is connected to the sensor module. The telescopic structure is specifically a worm gear structure, which is connected between the telescopic bracket and the rotating bracket. The moving distance indicating window is arranged on the upper surface of the rotating bracket.

6. A magnetic flux leakage detection device component testing platform according to claim 1, characterized in that: The data acquisition and control mechanism specifically includes: a host computer, a PLC control system, a frequency converter, a current control module, a safety interlock protection system and a high-speed camera. The host computer is respectively connected to the high-speed camera, the PLC control system and the slip ring data. The PLC control system is respectively electrically connected to the safety interlock protection system and the current control module. The current control module is electrically connected to the slip ring. The PLC control system is electrically connected to the frequency converter. The slip ring is respectively electrically connected to the junction box and the electromagnet.

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