CN202372625U - Device for detecting defects of motor - Google Patents
Device for detecting defects of motor Download PDFInfo
- Publication number
- CN202372625U CN202372625U CN2011204931841U CN201120493184U CN202372625U CN 202372625 U CN202372625 U CN 202372625U CN 2011204931841 U CN2011204931841 U CN 2011204931841U CN 201120493184 U CN201120493184 U CN 201120493184U CN 202372625 U CN202372625 U CN 202372625U
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- stator
- eddy current
- sensor array
- motor
- rotor
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Abstract
The utility model discloses a device for detecting defects of a motor. The device comprises a coil winding which is arranged in a stator wire winding slot and used for exciting an induction magnetic field, a sensing array which is used for measuring distribution of temperature fields and electromagnetic fields in a rotor and a stator, a rotating speed sensor for measuring rotating speed and speed of the motor, an eddy current excitation source for outputting an excitation waveform to detect eddy current and a signal processing and displaying unit which is used for controlling the eddy current excitation source to output excitation current, measuring current and voltage of the coil winding of the stator, receiving signals output by the sensing array and the rotating speed sensor and processing the received signals, wherein the coil winding in the stator wire winding slot is used as an eddy current detection exciting/receiving coil and used for generating an excitation electromagnetic field to detect defects of the stator and the rotor and receiving eddy current detection information. The device can monitor the defects on line and detect the defects off line, has the characteristics of simpleness, reliability, convenience in use and flexibility and is suitable to overhaul and maintain various rotary motors and linear motors.
Description
Technical field
The utility model relates to motor detection technique field, particularly a kind of motor defect detecting device.
Background technology
Motor is because its economical and practical industry-by-industry that is widely used in simple in structure; Development along with technology; Each application to the motor reliability require increasingly high; In some important application, very high like elevator, track traffic etc. to the motor reliability requirement, need detect and monitor its running status.Stator/elementary, rotor/secondary are the core components of motor, and defective that it is common and fault mainly contain stator/elementary iron core, winding defective and fault, rotor/secondary defective and fault etc.The check and analysis of current motor mainly are to carry out from harmonic wave, spectrum analysis angle, and effect is unsatisfactory, to the new method of detection needs of motor defective.
Summary of the invention
The utility model purpose is to overcome the above-mentioned deficiency that prior art exists; A kind of motor defect detecting device is provided; Be used for on-line monitoring, offline inspection, have characteristics simple and reliable and flexible and convenient to use, be suitable for various electric rotating machines and linear electric motors are overhauled and safeguard.
The utility model purpose realizes through following proposal:
A kind of motor defect detecting device; Stator, rotor, stator coil, eddy current driving source, signal Processing display unit, be arranged on stator and epitrochanterian sensor array, speed probe; Said eddy current driving source is connected with signal Processing display unit, stator coil, sensor array, speed probe respectively, shown in the signal Processing display unit be connected with communication unit.
Said sensor array is arranged in the winding slot of stator, and said sensor array also is arranged on the rotor, and said speed probe is arranged on the motor shaft.
Said sensor array is temperature-sensitive sensor array, magnetosensitive sensor array.
Said temperature-sensitive sensor array is infrared temperature-sensitive sensor array.
A kind of detection method of motor defect detecting device comprises the steps:
(1) stator coil in the stator winding groove is used to encourage induced field;
(2) sensor array is used for the temperature field in rotor, the stator, electromagnetic field distribution are measured;
(3) stator coil in the stator winding groove; Excitation/receiving coil as EDDY CURRENT; Apply the pulsating wave of sine wave, different frequency and the dutycycle of working power, the power high-order harmonic generation of the various waveforms of motor, multiple frequency, the multiple combination in the magnetic saturation electric current; Produce excitation electromagnetic field stator, rotor are carried out defects detection, and receive EDDY CURRENT information;
(4) speed probe is used for rotating speed of motor is measured;
(5) eddy current driving source is used to export the excitation waveform of EDDY CURRENT, comprising: certain in the pulsating wave of the sine wave of the working power of the various waveforms of motor, power high-order harmonic generation, multiple frequency, different frequency and dutycycle, the magnetic saturation electric current and multiple combination;
(6) signal Processing display unit is used for controlled vortex flow driving source output drive electric current, and electric current, the voltage of the coil winding of stator are measured;
The signal Processing display unit receives the signal of sensor array, speed probe output, and the signal that receives is carried out filtering, amplification, analog to digital conversion, digital signal processing;
The signal Processing display unit is connected with communication unit, realization and control center and and the communication system of power grids, as a monitoring unit of intelligent grid.
The utility model has following advantage and effect with respect to prior art:
Produce excitation electromagnetic field through in sets of stator coils, imposing exciting current, excitation electromagnetic field detects stator and rotor, in static or moving rotor, induces eddy current, realizes the EDDY CURRENT of rotor; Simultaneously; Eddy current in stator and the rotor can form thermal source stator and rotor are heated, and through rotor, infra-red heat dependent sensor combination rotating speed (perhaps speed) sensor of motion the realization Infrared Non-destructive Testing is measured in the distribution of the temperature field in stator and the rotor.
Description of drawings
Fig. 1 is the utility model motor defect detecting device structural representation.
Fig. 2 is that the utility model is applied to the structure of the linear motion actuator synoptic diagram.
Embodiment
Below in conjunction with embodiment and accompanying drawing the utility model is done further explain, but the embodiment of the utility model is not limited thereto.
Embodiment
By shown in Figure 1; The utility model motor defect detecting device; Comprise stator 1, rotor 3, stator coil 4, eddy current driving source 6, signal Processing display unit 7, be arranged on sensor array 2, speed probe 5 on stator 1 and the rotor 3; Said eddy current driving source 6 is connected with signal Processing display unit 7, stator coil 4, sensor array 2, speed probe 5 respectively, shown in signal Processing display unit 7 be connected with communication unit 8.
Said sensor array 2 is arranged in the coil groove of stator 1, and said sensor array 2 also is arranged on the rotor 3, and said speed probe 5 is arranged on the motor shaft, also can be arranged on the motor case, perhaps the annex of rotor.
Said sensor array 2 is temperature-sensitive sensor array, magnetosensitive sensor array.The temperature-sensitive sensor array can adopt infrared temperature-sensitive sensor array.
The detection method of motor defect detecting device, realize through following step:
(1) stator coil 4 in the stator winding groove is used to encourage induced field;
(2) install sensor array 2 additional, be used for the temperature field in rotor, the stator, electromagnetic field distribution are measured;
(3) stator coil 4 in the stator winding groove; Excitation/receiving coil as EDDY CURRENT; Apply the pulsating wave of sine wave, different frequency and the dutycycle of working power, the power high-order harmonic generation of the various waveforms of motor, multiple frequency, certain and multiple combination in the magnetic saturation electric current; Produce excitation electromagnetic field stator 1, rotor 3 are carried out defects detection, and receive EDDY CURRENT information; Specifically; Stator 1, rotor 3 are detected and receive by the eddy current of exciting current induction by the stator coil 4 of stator; Eddy current in stator 1 and the rotor 3 can form thermal source stator 1 and rotor 3 are heated, and combines rotating speed (speed) sensor 5 to distribute with rotor 3 interior temperature fields to stator 1 through rotor 1, the infra-red heat dependent sensor that moves and measure the realization Infrared Non-destructive Testing;
(4) speed probe 5, are used for rotating speed of motor is measured;
(5) the eddy current driving source 6; Be used to export the excitation waveform of EDDY CURRENT, comprise: certain in the pulsating wave of the sine wave of the working power of the various waveforms of motor, power high-order harmonic generation, multiple frequency, different frequency and dutycycle, the magnetic saturation electric current and multiple combination;
(6) the signal Processing display unit 7, are used for controlled vortex flow driving source 6 output drive electric currents, and electric current, the voltage of the stator coil 4 of stator are measured;
Signal Processing display unit 7 receives the signal of sensor array 2, speed probe 5 outputs, and the signal that receives is carried out filtering, amplification, analog to digital conversion, digital signal processing etc.;
Shown in signal Processing display unit 7 be connected with power line carrier communication unit 8, realize communicating by letter with intelligent grid.
Shown in Figure 2; The utility model is equally applicable to linear electric motors; Its annexation is identical with the annexation of Fig. 1, and in Fig. 2 linear electric motors: elementary 1-1 is equivalent to the stator 1 among Fig. 1, secondary 3-1 is equivalent to rotor 3, coil 4-1, sensor array 2-1, speed probe 5-1 among Fig. 1
As stated, just can realize the utility model preferably.
The foregoing description is merely the utility model preferred implementation; But the embodiment of the utility model is not restricted to the described embodiments; Other are any not to deviate from change, the modification done under spirit and the principle of the utility model, substitute, combination, simplify; All should be the substitute mode of equivalence, be included within the protection domain of the utility model.
Claims (4)
1. motor defect detecting device; Comprise stator, rotor, stator coil; It is characterized in that also comprising eddy current driving source, signal Processing display unit, be arranged on stator and epitrochanterian sensor array, speed probe; Said eddy current driving source is connected with signal Processing display unit, stator coil, sensor array, speed probe respectively, shown in the signal Processing display unit be connected with communication unit.
2. motor defect detecting device according to claim 1 is characterized in that said sensor array is arranged in the winding slot of stator, and said sensor array also is arranged on the rotor, and said speed probe is arranged on the motor shaft.
3. motor defect detecting device according to claim 2 is characterized in that said sensor array is temperature-sensitive sensor array, magnetosensitive sensor array.
4. motor defect detecting device according to claim 3 is characterized in that said temperature-sensitive sensor array is infrared temperature-sensitive sensor array.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204931841U CN202372625U (en) | 2011-12-01 | 2011-12-01 | Device for detecting defects of motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204931841U CN202372625U (en) | 2011-12-01 | 2011-12-01 | Device for detecting defects of motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202372625U true CN202372625U (en) | 2012-08-08 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011204931841U Expired - Fee Related CN202372625U (en) | 2011-12-01 | 2011-12-01 | Device for detecting defects of motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202372625U (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102608528A (en) * | 2011-12-01 | 2012-07-25 | 华南理工大学 | Defect detection method and device for motors |
| CN104374491A (en) * | 2014-11-28 | 2015-02-25 | 南阳防爆集团股份有限公司 | Explosion-proof motor rotor temperature measuring device and method |
| CN104808145A (en) * | 2015-05-06 | 2015-07-29 | 成都诚邦动力测试仪器有限公司 | Motor temperature control testing system based on self-gain control |
| CN104849662A (en) * | 2015-05-22 | 2015-08-19 | 三峡大学 | Electromagnetic induction type generator air gap detection method and electromagnetic induction type generator air gap detection device |
| CN110031511A (en) * | 2019-04-19 | 2019-07-19 | 清华大学深圳研究生院 | Defect detecting device, defect detecting system and defect inspection method |
| CN112072889A (en) * | 2020-09-04 | 2020-12-11 | 珠海格力电器股份有限公司 | Permanent magnet linear motor and permanent magnet magnetic performance online detection device and method thereof |
-
2011
- 2011-12-01 CN CN2011204931841U patent/CN202372625U/en not_active Expired - Fee Related
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102608528A (en) * | 2011-12-01 | 2012-07-25 | 华南理工大学 | Defect detection method and device for motors |
| CN104374491A (en) * | 2014-11-28 | 2015-02-25 | 南阳防爆集团股份有限公司 | Explosion-proof motor rotor temperature measuring device and method |
| CN104374491B (en) * | 2014-11-28 | 2017-05-24 | 南阳防爆集团股份有限公司 | Explosion-proof motor rotor temperature measuring device and method |
| CN104808145A (en) * | 2015-05-06 | 2015-07-29 | 成都诚邦动力测试仪器有限公司 | Motor temperature control testing system based on self-gain control |
| CN104849662A (en) * | 2015-05-22 | 2015-08-19 | 三峡大学 | Electromagnetic induction type generator air gap detection method and electromagnetic induction type generator air gap detection device |
| CN104849662B (en) * | 2015-05-22 | 2017-12-29 | 三峡大学 | A kind of induction power generator air gap detection method and its device |
| CN110031511A (en) * | 2019-04-19 | 2019-07-19 | 清华大学深圳研究生院 | Defect detecting device, defect detecting system and defect inspection method |
| CN110031511B (en) * | 2019-04-19 | 2022-02-25 | 清华大学深圳研究生院 | Defect detection device, defect detection system and defect detection method |
| CN112072889A (en) * | 2020-09-04 | 2020-12-11 | 珠海格力电器股份有限公司 | Permanent magnet linear motor and permanent magnet magnetic performance online detection device and method thereof |
| CN112072889B (en) * | 2020-09-04 | 2022-02-11 | 珠海格力电器股份有限公司 | Permanent magnet linear motor and permanent magnet magnetic performance online detection device and method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120808 Termination date: 20141201 |
|
| EXPY | Termination of patent right or utility model |