CN104515802A - Eddy current detecting device capable of rotating at high speed - Google Patents
Eddy current detecting device capable of rotating at high speed Download PDFInfo
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- CN104515802A CN104515802A CN201510012341.5A CN201510012341A CN104515802A CN 104515802 A CN104515802 A CN 104515802A CN 201510012341 A CN201510012341 A CN 201510012341A CN 104515802 A CN104515802 A CN 104515802A
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- eddy current
- rotating shaft
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Abstract
The invention discloses an eddy current detecting device capable of rotating at a high speed. The eddy current detecting device comprises a machine frame, a hollow rotating shaft, a motor, a wireless charging transmitting coil, a wireless charging receiving coil, an eddy current probe module, a wireless detection signal transmitting module and a wireless detection signal receiving module, wherein the wireless charging receiving coil is fixedly arranged on the hollow rotating shaft in a sleeving manner, and provides electric energy for the eddy current probe module and the wireless detection signal transmitting module for work; a principle of mutual inductance response between the wireless charging transmitting coil and the wireless charging receiving coil is used for transmitting wireless electric energy. After the technical scheme is adopted, according to the eddy current detecting device capable of rotating at the high speed, the transmitting coil and the receiving coil are arranged, so that the electric energy can be transmitted in a wireless and contactless manner, a detection part and a signal processing part are not in contact with an electric energy supply part thoroughly, the service life of equipment is greatly prolonged, and the scanning efficiency of the equipment is greatly improved; the eddy current detecting device is scientific and reasonable in organizational design, the use is convenient, the time for detecting metal defects is shortened, and the cost for detecting defects is reduced.
Description
Technical field
The invention belongs to metal material scar detecting devices field, specifically High Rotation Speed eddy current testing device.
Background technology
The application of metal parts is very extensive, the stability of its quality directly affects production process and benefit, and axle is widely used in the various plant equipment such as transportation and communication, industrial and agricultural production equipment as the strength member in plant equipment, the quality of axle directly determines serviceable life and the serviceability thereof of plant equipment, machinery once occur that the fracture of axle can cause traffic and industrial accident, causes serious property loss and personal injury in the process of running.And for metal works; its inner defect produced directly cannot be judged by naked eyes; when having influence on outside because of inherent vice; now equipment often can not use; if therefore can find early, rejected region is gone forward side by side row relax, greatly can save servicing time, enhance productivity; avoid the generation of accident, thus effectively protect property and the personal safety of people.
Now, market there is various metal defect detection equipment, and modal be exactly potable metal fault indicator, use when this portable fault indicator is only for overhauling some parts of machine, mostly be handle type and fixed point flaw detection is carried out to part, flaw detection efficiency is extremely low, is not suitable for and carries out quality testing or batch maintenance to the part of batch production.For this reason, our company have developed the metal defect detection equipment being suitable for cylindrical metal bar or metal pipe material being carried out to high speed mass detection, its concrete structure principle is: in frame, arrange hollow rotating shaft, fixing metal scar detecting head on hollow rotating shaft, rotated by driven by motor hollow rotating shaft, metal bar material to be detected or tubing are passed hollow rotating shaft, and namely metal scar detecting head carries out scanning probe to metal bar material or tubing, then extracts detectable signal to host computer and can carry out observing, analyzing.Wherein, fixing on hollow rotating shaft metal scar detecting head and the energy source of sender unit are through and are fixed on that conducting slip ring on hollow rotating shaft and the brush be fixed in frame realize.Find following problem in actual applications: for a long time under high-velocity scanning (hollow rotating shaft High Rotation Speed) work, conducting slip ring and brush are easy to generate heat, wear and tear, break down, therefore this design is unfavorable for the serviceable life of extension device, be not suitable for hypervelocity metal defect detection.For this reason, the scar detecting devices of cylindrical metal bar or metal pipe material is still needed constantly research and improved.
Summary of the invention
The object of the present invention is to provide a kind of High Rotation Speed eddy current testing device that can carry out long-time hypervelocity scanning flaw detection to metal bar material and tubing.
Above-mentioned purpose of the present invention is realized by following technical proposal:
High Rotation Speed eddy current testing device, comprises frame, hollow rotating shaft, motor, wireless charging transmitting coil, wireless charging receiving coil, eddy current probe module, radio detection signal emission module and radio detection signal receiving module; Described hollow rotating shaft is arranged in frame rotationally, and motor drives the rotary motion of hollow rotating shaft by gear train; Described eddy current probe module and radio detection signal emission module are connected by signal wire and are fixed on hollow rotating shaft; Wireless charging receiving coil fixed cover is located on hollow rotating shaft, is electrically connected with eddy current probe module, radio detection signal emission module, for eddy current probe module and radio detection signal emission module provide work energy; The wireless charging receiving coil that described wireless charging transmitting coil is fixed on fixing on hollow rotating shaft in frame is relative and mutually close; Wireless charging receiving coil connects AC power by wire, and the electric energy of acquisition is sent to wireless charging receiving coil by mutual inductance response theory; Described radio detection signal receiving module is fixedly mounted in frame, receives the signal that radio detection signal emission module sends, and the signal of acquisition is sent to host computer.
Described gear train is belt gear.
Described eddy current probe module has an eddy current probe to be arranged on hollow rotating shaft or has multiple eddy current probe uniform ring around being arranged in hollow rotating shaft one end.
Described radio detection signal emission module is circular, and through hole is offered at its center, is located on hollow rotating shaft by through hole fixed cover.
After adopting technique scheme, the invention has the beneficial effects as follows: 1, by arranging transmitting coil and receiving coil, electric energy is transmitted by wireless and contactless mode, makes delivery of electrical energy mechanism reach the rationality state of nothing wearing and tearing, substantially increase serviceable life and the scan efficiency of equipment; 2, also by wireless transmission after the signal transacting detected, make probe portion and signal processing and electric power supply part thoroughly contactless, further increase detection efficiency; 3, mechanism design is scientific and reasonable, easy to use, shortens the metal defect detection time and reduces flaw detection cost.
Accompanying drawing explanation
Fig. 1 is the complete machine stereographic map of High Rotation Speed eddy current testing device of the present invention;
Fig. 2 is the inner structure schematic diagram of High Rotation Speed eddy current testing device;
Fig. 3 is that transmitting coil carries out wireless power schematic diagram to receiving coil;
Fig. 4 is wireless electric energy transmission device solution principle block diagram;
Fig. 5 is signal transmitting, power amplification and signal demodulator circuit theory diagrams;
Fig. 6 is radio detection signal emission module and radio detection signal receiving module theory diagram;
Fig. 7 is A/D signal acquisition module circuit theory diagrams;
Fig. 8 is each circuit module totality theory diagram of the present invention;
Primary symbols explanation
1, frame
2, hollow rotating shaft
3, motor
4, wireless charging transmitting coil
5, wireless charging receiving coil
6, eddy current probe module
7, radio detection signal emission module
8, radio detection signal receiving module.
Embodiment
Below in conjunction with the drawings and specific embodiments, the invention will be further described.
embodiment: High Rotation Speed eddy current testing device, as depicted in figs. 1 and 2, frame 1, hollow rotating shaft 2, motor 3, wireless charging transmitting coil 4, wireless charging receiving coil 5, eddy current probe module 6, radio detection signal emission module 7 and radio detection signal receiving module 8 is comprised.Hollow rotating shaft 2 is arranged in frame 1 rotationally, and motor 3 drives the rotary motion of hollow rotating shaft 2 by gear train.Eddy current probe module 6 and radio detection signal emission module 7 are connected by signal wire and are fixed on hollow rotating shaft 2.Wireless charging receiving coil 5 fixed cover is located on hollow rotating shaft 2, is electrically connected with eddy current probe module 6, radio detection signal emission module 7, for eddy current probe module 6 and radio detection signal emission module 7 provide work energy.The wireless charging receiving coil 5 that wireless charging transmitting coil 4 is fixed on fixing on hollow rotating shaft 2 in frame 1 is relative and mutually close.Wireless charging receiving coil 5 connects AC power by wire, the electric energy of acquisition is sent to wireless charging receiving coil 6 by mutual inductance response theory, as shown in Figure 3.Radio detection signal receiving module 8 is fixedly mounted in frame 1, receives the signal that radio detection signal emission module 7 sends, and the signal of acquisition is sent to host computer.Gear train is belt gear.Eddy current probe module 6 can arrange an eddy current probe and be arranged on hollow rotating shaft, or multiple eddy current probe uniform ring is around being arranged in hollow rotating shaft one end.Radio detection signal emission module 7 is circular, and through hole is offered at its center, is located on hollow rotating shaft 2 by through hole fixed cover.
During work, drive hollow rotating shaft 2 High Rotation Speed by motor 3 by belt gear, be fixedly mounted on eddy current probe module 6 on hollow rotating shaft 2 with radio detection signal emission module 7 with hollow rotating shaft 2 High Rotation Speed.By the alternating current of 220V/50HZ, through step-down process, then become the alternating current of high frequency 100KHz, be then loaded into be fixed on frame 1 one end wireless charging transmitting coil 4 on.Although wireless charging transmitting coil 4 is stationary state, and no matter how high wireless charging receiving coil 5 have with the rotational speed of hollow rotating shaft 2, utilize the principle that mutual inductance responds, wireless charging receiving coil 5 just has the alternating magnetic field of 100KHz, utilize this magnetic field just can change 1 into frequency alternating current, again through detection voltage stabilizing process, the 12V power supply getting final product administration measure is supplied to the internal circuit board of main frame as working power, for eddy current probe module 6 and radio detection signal emission module 7 provide work energy.Cylindrical metal bar to be detected or hollow metal pipe are passed from the internal cavities of hollow rotating shaft 2, be fixed on eddy current probe module 6 around hollow rotating shaft 2 and will carry out eddy current ripple signal flaw detection scanning around its circumference to it fast under the drive of hollow rotating shaft 2, and sweep signal is changed into electrical signal transfer to the fixing radio detection signal emission module 7 of the hollow rotating shaft 2 that coexists.After radio detection signal emission module 7 processes the electric signal received by its wireless transmission antenna be transmitted to be fixed on radio detection signal receiving module 8(radio detection signal emission module in frame 1 and radio detection signal receiving module principle of work as shown in Figure 6), radio detection signal receiving module 8 Received signal strength also passes to host computer by signal wire after process.Eddy current probe is utilized to carry out scar detection and final scar acquisition of information and be presented at being widely used in metal defect detection and wireless communication technique field to metal material, its concrete course of work principle is: when an alternating signal is activated to the array eddy current coil of eddy current probe module 6, eddy current will produce the magnetic field of an alternation, if object to be detected existing defects, then will destroy this magnetic field, by the magnetic field energy received is changed into electric signal, because pumping signal needs to provide enough large energy, therefore the energy of pumping signal is provided by " power amplification " module.Receive that the signal of returning carries out amplifying, filtering process, again " phase sensitive detection " carry out useful signal to insert and get, again through A/ D analog to digital conversion (A/D signal acquisition module circuit theory as shown in Figure 7), eddy current sensor is received the signal of returning carry out " digitizing ", enter FPGA module and carry out management processing, data result is passed to radio detection signal receiving module 8 by radio detection signal emission module 7, pass to PC terminal by LAN Ethernet again, carry out showing, process and judging.
The foregoing is only the preferred embodiments of the present invention, be not limited to invention, although with reference to previous embodiment to invention has been detailed description, for a person skilled in the art, it still can be modified to the technical scheme described in foregoing embodiments, or carries out equivalent replacement to wherein portion of techniques feature.Within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (4)
1. High Rotation Speed eddy current testing device, is characterized in that: comprise frame, hollow rotating shaft, motor, wireless charging transmitting coil, wireless charging receiving coil, eddy current probe module, radio detection signal emission module and radio detection signal receiving module; Described hollow rotating shaft is arranged in frame rotationally, and motor drives the rotary motion of hollow rotating shaft by gear train; Described eddy current probe module and radio detection signal emission module are connected by signal wire and are fixed on hollow rotating shaft; Wireless charging receiving coil fixed cover is located on hollow rotating shaft, is electrically connected with eddy current probe module, radio detection signal emission module, for eddy current probe module and radio detection signal emission module provide work energy; The wireless charging receiving coil that described wireless charging transmitting coil is fixed on fixing on hollow rotating shaft in frame is relative and mutually close; Wireless charging receiving coil connects AC power by wire, and the electric energy of acquisition is sent to wireless charging receiving coil by mutual inductance response theory; Described radio detection signal receiving module is fixedly mounted in frame, receives the signal that radio detection signal emission module sends, and the signal of acquisition is sent to host computer.
2. High Rotation Speed eddy current testing device according to claim 1, is characterized in that: described gear train is belt gear.
3. High Rotation Speed eddy current testing device according to claim 1, is characterized in that: described eddy current probe module has an eddy current probe to be arranged on hollow rotating shaft or has multiple eddy current probe uniform ring around being arranged in hollow rotating shaft one end.
4. High Rotation Speed eddy current testing device according to claim 1, is characterized in that: described radio detection signal emission module is for circular, and through hole is offered at its center, is located on hollow rotating shaft by through hole fixed cover.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510012341.5A CN104515802A (en) | 2015-01-12 | 2015-01-12 | Eddy current detecting device capable of rotating at high speed |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510012341.5A CN104515802A (en) | 2015-01-12 | 2015-01-12 | Eddy current detecting device capable of rotating at high speed |
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| CN201510012341.5A Pending CN104515802A (en) | 2015-01-12 | 2015-01-12 | Eddy current detecting device capable of rotating at high speed |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20110025316A1 (en) * | 2009-07-31 | 2011-02-03 | Denis Faucher | Eddy current probe assembly adjustable for inspecting test objects of different sizes |
| CN102262129A (en) * | 2010-04-16 | 2011-11-30 | 奥林巴斯Ndt公司 | Rotating array probe system for non-destructive testing |
| CN202171585U (en) * | 2011-06-22 | 2012-03-21 | 厦门艾帝尔电子科技有限公司 | Rotary vortex flow detecting system |
| CN203643035U (en) * | 2013-12-12 | 2014-06-11 | 西安益翔航电科技有限公司 | Thermocouple measuring device of rotary mechanism employing wireless power supply and wireless network technologies |
| CN204346976U (en) * | 2015-01-12 | 2015-05-20 | 厦门艾帝尔电子科技有限公司 | High Rotation Speed eddy current testing device |
-
2015
- 2015-01-12 CN CN201510012341.5A patent/CN104515802A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20110025316A1 (en) * | 2009-07-31 | 2011-02-03 | Denis Faucher | Eddy current probe assembly adjustable for inspecting test objects of different sizes |
| CN102262129A (en) * | 2010-04-16 | 2011-11-30 | 奥林巴斯Ndt公司 | Rotating array probe system for non-destructive testing |
| CN202171585U (en) * | 2011-06-22 | 2012-03-21 | 厦门艾帝尔电子科技有限公司 | Rotary vortex flow detecting system |
| CN203643035U (en) * | 2013-12-12 | 2014-06-11 | 西安益翔航电科技有限公司 | Thermocouple measuring device of rotary mechanism employing wireless power supply and wireless network technologies |
| CN204346976U (en) * | 2015-01-12 | 2015-05-20 | 厦门艾帝尔电子科技有限公司 | High Rotation Speed eddy current testing device |
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Application publication date: 20150415 |
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