CN106547988A - The cage type asynchronous motor construction design method of multiple faults coupled simulation experiment - Google Patents
The cage type asynchronous motor construction design method of multiple faults coupled simulation experiment Download PDFInfo
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- CN106547988A CN106547988A CN201610998973.8A CN201610998973A CN106547988A CN 106547988 A CN106547988 A CN 106547988A CN 201610998973 A CN201610998973 A CN 201610998973A CN 106547988 A CN106547988 A CN 106547988A
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Abstract
The invention discloses a kind of cage type asynchronous motor construction design method of multiple faults coupled simulation experiment, the construction design method includes that rotor bar breaking fault simulation and air-gap eccentric fault are simulated, and broken strip and eccentric multiple faults coupled simulation, and made containing crannied rotor by insulation spacer is added when cage-type rotor is poured into a mould, by the quiet eccentric and dynamic fault of eccentricity of setting-up eccentricity set simulation on bearing internal external circle.The present invention can simulate single and coupling fault when different type, different faults degree, to verify that motor fault theory provides laboratory reference data.
Description
Technical field
The present invention relates to a kind of construction design method of asynchronous motor multiple faults coupled simulation experiment, particularly a kind of to use
In the construction design method to cage type asynchronous motor multiple faults coupling experiment.
Background technology
In During Process of Long-term Operation, often because of transshipping, assembling, there is rotor broken bar to motor in the reason such as improper and air gap is inclined
The failures such as the heart.Rotor bar breaking fault mostly is sliver and fracture is occurred by effect or the artificial action of electrokinetic moment.Air gap eccentric centre is again
Static eccentric, dynamic bias can be divided into and mixing is eccentric.Static air gap eccentric centre refers to rotor decentraction, and rotating shaft is with rotor center
For center of rotation；Dynamic bias refers to rotor decentraction, and rotating shaft is with stator center as center of rotation；Dynamic bias can induce static state
Bias, all two kinds of fault of eccentricity are often present simultaneously, that is, mix eccentric, and when mixing is eccentric, spindle central is stator center and turns
A bit outside subcenter.And when rotor occurs broken bar fault, itself will also result in air gap eccentric centre.Therefore, in actual motion
In, rotor broken bar often couples presence with fault of eccentricity.This coupling fault can deteriorate the service condition of motor, or even cause fixed
Rub-impact, can cause to shut down when serious.There is certain practical significance to such failure experiment Analysis.
Also some patents introduce asynchronous motor malfunction test method both at home and abroad.Wherein, rotor bar breaking fault reality
It is the punching model rotor broken bar fault on rotor bar to test, and this has larger difference with actual broken strip situation；And air gap is inclined
Heart malfunction test is all simulating quiet fault of eccentricity by mobile stator end cap, although can arrange fault degree, but cannot
Simulation is dynamic eccentric and mixes fault of eccentricity, cannot also simulate broken strip with eccentric coupling fault.In consideration of it, design one kind can be with mould
Intend broken strip and eccentric single failure and coupling fault, and the experimental technique of fault degree can be quantified, so as to for cage type asynchronous electricity
The monitoring of motivation complex fault provides basis with diagnosis, is worth with important practical.
The content of the invention
It is an object of the invention to provide a kind of cage type asynchronous motor construction design method of multiple faults coupled simulation experiment,
Motor Jing after structure design can model rotor broken strip and air gap eccentric centre single failure, two kinds of single failures can be simulated again same
When the coupling fault that exists, and different faults degree can be adjusted.
For achieving the above object, the technical solution used in the present invention is as follows.
A kind of cage type asynchronous motor construction design method of multiple faults coupled simulation experiment, the construction design method bag
Include the design of rotor bar breaking fault model configuration, the design of quiet fault of eccentricity model configuration, dynamic fault of eccentricity model configuration design, mixing
Fault of eccentricity model configuration is designed and broken strip and eccentric coupling fault model configuration design；
The rotor bar breaking fault model configuration design is that have insulation spacer simulation to turn by the addition in the sliver of rotor mould
Sub- broken bar fault, physical simulation experimental configuration method for designing are as follows：
（1）According to rotor die parameters, make and rotor bar diameter identical insulation spacer；
（2）The insulation spacer is inserted in the sliver of rotor mould；
（3）Rotor is poured into a mould by existing process flow process so that insulation spacer is completely embedded in rotor bar；
（4）Eccentric correction is carried out to the rotor, is made rotor be broken strip but uninfluenced failure rotor, will be turned by insulation spacer
Sub- sliver is split into two parts of electric insulation to realize the simulation of rotor bar breaking fault；
The quiet fault of eccentricity model configuration design is by eccentric bushing simulation, its concrete mould are provided with bearing outer ring
Draft experiment construction design method is as follows：
（1）According to first wife's bearing size, select the quiet capacity eccentric bearing of same type, size meet：,；
（2）Eccentric overcoat size is；
（3）According to motor average airgap size, calculate the different quiet degree of eccentricitysEccentric distance；
（4）According to the eccentric distance, the eccentric overcoat of the different degree of eccentricitys of processing；
（5）Design back-up ring calculates quiet capacity eccentric bearing and first wife's bearing thickness difference, back-up ring to match the design parameter of former bearing (ball) cover
Width, wherein, back-up ring internal diameter is more than bearing bore diameter；
（6）Eccentric overcoat is nested in into bearing outer ring, and with back-up ring series winding in bearing (ball) cover, so that rotating shaft center of rotation
It is consistent with rotor center, realize quiet fault of eccentricity simulation；
The dynamic fault of eccentricity model configuration design is, by the setting-up eccentricity set on bearing inner race, and to change the bias of eccentric bushing
Distance, realizes the dynamic fault of eccentricity simulation of the different degree of eccentricitys, and physical simulation experimental configuration method for designing is as follows：
（1）According to first wife's bearing size, select the dynamic capacity eccentric bearing of same type, size meet：
；
（2）Eccentric inner sleeve size is；
（3）According to motor average airgap size, calculate the different dynamic degree of eccentricitysEccentric distance；
（4）According to the eccentric distance, the eccentric inner sleeve of the different degree of eccentricitys of processing；
（5）Back-up ring width；
（6）Eccentric inner sleeve is nested in into bearing inner race, and with back-up ring series winding in bearing (ball) cover, so that rotating shaft center of rotation
It is consistent with stator center, realize dynamic fault of eccentricity simulation；
The mixing fault of eccentricity model configuration design is by eccentric inner sleeve and bias are separately installed with bearing internal external footpath
Overcoat is simulated, and physical simulation experimental configuration method for designing is as follows：
（1）According to first wife's bearing size, select same type mixing capacity eccentric bearing, size meet：；
（2）Eccentric inner sleeve size is；Eccentric overcoat size is；
（3）According to motor average airgap size, the different quiet degree of eccentricitys are calculated respectivelyWith the eccentric distance of the dynamic degree of eccentricity,；
（4）By the eccentric distanceThe eccentric overcoat of the different degree of eccentricitys of processing, according to describedProcess the inclined of the different degree of eccentricitys
Intracardiac set；
（5）Back-up ring width；
（6）Eccentric overcoat is nested in into bearing outer ring, eccentric inner sleeve is nested in into bearing inner race, and with back-up ring series winding installed in axle
In socket end lid, so that rotating shaft center of rotation is a bit outside stator center and rotor center, mixing fault of eccentricity simulation is realized；
The broken strip and eccentric coupling fault simulation experiment structure method for designing are as follows：
（1）First wife's rotor is replaced by into broken strip rotor in asynchronous motor, installs quiet with eccentric overcoat in rotating shaft both sides
Capacity eccentric bearing, and make the minimum eccentric position of both sides eccentric overcoat in the same horizontal line, to ensure that machine shaft does not incline
Tiltedly, then the center of rotation of rotating shaft is rotor center, realizes that rotor broken bar is simulated with quiet eccentric coupling fault；
（2）First wife's rotor is replaced by into broken strip rotor in asynchronous motor, is installed with the dynamic of eccentric inner sleeve in rotating shaft both sides
Capacity eccentric bearing, and make the minimum eccentric position of both sides bias inner sleeve in the same horizontal line, to ensure that machine shaft does not incline
Tiltedly, then the center of rotation of rotating shaft is stator center, realizes that rotor broken bar is simulated with dynamic eccentric coupling fault；
（3）First wife's rotor is replaced by into broken strip rotor in asynchronous motor, is installed simultaneous with eccentric overcoat in rotating shaft both sides
With the mixing capacity eccentric bearing of eccentric inner sleeve, and make both sides eccentric overcoat and eccentric inner sleeve minimum eccentric position be in respectively it is same
On horizontal line, to ensure machine shaft not run-off the straight, then the center of rotation of rotating shaft is outside stator center and rotor center
A bit, realize rotor broken bar and mix eccentric coupling fault simulation.
The present invention realizes that technical scheme that above-mentioned purpose taken compared with prior art, has the advantage that and good effect
It is：The cage type asynchronous motor construction design method of multiple faults coupled simulation experiment of the present invention can simulate different faults degree
Rotor broken bar, static eccentric, dynamic is eccentric, mixing is eccentric, broken strip couples event with quiet eccentric coupling fault, broken strip with dynamic bias
Barrier, broken strip with mix eccentric coupling fault, experimental implementation simply, simulation process intuitively, with preferable motility and polytropy,
It is particularly well-suited to universities and colleges and scientific research.
Description of the drawings
Fig. 1 is cage type asynchronous motor multiple faults coupled simulation experimental configuration method for designing block diagram of the present invention.
Fig. 2 is broken strip cage rotor model structure of the present invention.
Fig. 3 is existing first wife's bearing arrangement schematic diagram.
Fig. 4 is quiet capacity eccentric bearing structural representation of the invention.
Fig. 5 is the dynamic capacity eccentric bearing structural representation of the present invention.
Fig. 6 is present invention mixing capacity eccentric bearing structural representation.
In figure：1- rotor end rings；2- rotor bars；3- insulation spacers；4- bearing outer rings；5- retainers；6- balls；7- axles
Hold inner ring；The quiet capacity eccentric bearing eccentric overcoats of 8-；9- back-up rings；The dynamic capacity eccentric bearing bias inner sleeves of 10-；11- mixing capacity eccentric bearing is eccentric
Overcoat；12- mixing capacity eccentric bearing bias inner sleeve；B- bearing widths；D- bearing outside diameters；Back-up ring width；D- bearing bore diameters；M- is eccentric
Set external diameter；M- eccentric bushing internal diameters；H- back-up ring internal diameters；H- back-up ring external diameters.
Specific embodiment
For the ease of understanding the objects, technical solutions and advantages of the present invention, below in conjunction with the accompanying drawings to concrete reality of the invention
The mode of applying makes further instructions.
A kind of cage type asynchronous motor structure design of above-mentioned the provided multiple faults coupled simulation experiment of the present invention is provided
The technical scheme of method, including the design of rotor bar breaking fault model configuration, the design of quiet fault of eccentricity model configuration, dynamic fault of eccentricity
Model configuration is designed, mixes the design of fault of eccentricity model configuration, and the coupling event that broken bar fault simulation and fault of eccentricity are simulated
Barrier model configuration design；The structure design for implementing the experiment of multiple faults coupled simulation respectively is as follows.
As shown in Figure 2, the model configuration design for implementing rotor bar breaking fault is by adding in the sliver of rotor mould
Plus insulation spacer model rotor broken bar fault, physical simulation experimental configuration method for designing step is as follows：
Step one, according to rotor die parameters, makes and rotor bar diameter dimension identical insulation spacer；
Step 2, at one of rotor mould（Or several）Above-mentioned insulation spacer is added in sliver；
Step 3, pours into a mould rotor according to normal existing process flow process so that insulation spacer is completely embedded in rotor bar；
Step 4, carries out eccentric correction to above-mentioned rotor, makes rotor be broken strip but uninfluenced failure rotor, realizes rotor broken bar
The simulation of failure.
As shown in Figure 3, it is first wife's bearing arrangement schematic diagram, accompanying drawing 4 is the quiet of the quiet fault of eccentricity simulation of the present embodiment
Capacity eccentric bearing structural representation, in this embodiment, is made using the quiet fault of eccentricity simulation of Y160M-6 asynchronous motors
For embodiment, its bearing designation is 6309, and the physical simulation experimental configuration method for designing step of quiet fault of eccentricity simulation is as follows：
Step one, according to first wife's bearing size, selects quiet capacity eccentric bearing, and size should meet claimed below：Same type,,, it is the Machinability Evaluation to ensure eccentric ring that the external diameter of the 5mm cuts down surplus, institute
It is to ensure that bearing rigidity meets motor operation requirement to state bearing width minima；
Step 2, eccentric overcoat size is；
Step 3, according to motor average airgap size, calculate the different quiet degree of eccentricitysEccentric distance；
Step 4, according to the eccentric distance, the eccentric overcoat of the different degree of eccentricitys of processing；
Step 5, due to reducing bearing outside diameter, bearing width can also reduce, and need to design back-up ring, to match setting for former bearing (ball) cover
Meter parameter, calculates quiet capacity eccentric bearing and first wife's bearing thickness difference, back-up ring width
, wherein, back-up ring internal diameter is conducive to convenient disassembly slightly larger than bearing bore diameter, realizes quiet fault of eccentricity simulation.
It is capacity eccentric bearing structural representation as shown in Figure 5, implements the physical simulation experiment knot of dynamic fault of eccentricity simulation
Structure method for designing step is as follows：
Step one, according to first wife's bearing size, selects dynamic capacity eccentric bearing, and size should meet claimed below：Same type,；
Step 2, eccentric inner sleeve size is；
Step 3, according to motor average airgap size, calculate the different dynamic degree of eccentricitysEccentric distance；
Step 4, according to the eccentric distance, the eccentric inner sleeve of the different degree of eccentricitys of processing；
Step 5, back-up ring width, realize dynamic fault of eccentricity simulation.
As shown in Figure 6, it is mixing capacity eccentric bearing structural representation, mixes the physical simulation experiment knot of fault of eccentricity simulation
Structure method for designing step is as follows：
Step one, according to first wife's bearing size, selects mixing capacity eccentric bearing, and size should meet claimed below：Same type,；
Step 2, eccentric inner sleeve size is；Eccentric overcoat size is；
Step 3, according to motor average airgap size, the different quiet degree of eccentricitys are calculated respectivelyWith the eccentric throw of the dynamic degree of eccentricity
From,；
Step 4, according to the eccentric distanceThe eccentric overcoat of the different degree of eccentricitys of processing, according to describedProcessing is different eccentric
The eccentric inner sleeve of degree；
Step 5, back-up ring width, realize mixing fault of eccentricity simulation.
It is embodied as a kind of cage type asynchronous motor multiple faults coupled simulation experimental configuration method for designing as follows：
Step one, single broken bar fault, load broken strip rotor in motor stator, install identical first wife's axle in two ends of rotor
Hold, assembling motor, single broken bar fault can be simulated；
Step 2, single fault of eccentricity, load normal rotor in motor stator, install identical in two ends of rotor respectively quiet partially
The heart, dynamic eccentric, mixing capacity eccentric bearing, and ensure that the minimum eccentric position of two groups of bearings is in same point, assembling relative to rotating shaft
Motor, can simulate single quiet eccentric, dynamic eccentric and mixing fault of eccentricity；
Step 3, broken strip and quiet eccentric coupling fault, load broken strip rotor in motor stator, install phase at rotating shaft two ends respectively
Same quiet capacity eccentric bearing, and ensure that the minimum eccentric position of two groups of bearings is in same point relative to rotating shaft, assembling motor can mould
Intend broken strip and quiet eccentric coupling fault；
Step 4, broken strip and dynamic eccentric coupling fault, load broken strip rotor in motor stator, install phase at rotating shaft two ends respectively
Same dynamic capacity eccentric bearing, and ensure that the minimum eccentric position of two groups of bearings is in same point relative to rotating shaft, assembling motor can mould
Intend broken strip and dynamic eccentric coupling fault；
Step 5, broken strip with mix eccentric coupling fault, load broken strip rotor in motor stator, install at rotating shaft two ends respectively
Identical mixes capacity eccentric bearing, and ensures that the minimum eccentric position of two groups of bearings is in same point relative to rotating shaft, assembling motor,
Broken strip can be simulated and mix eccentric coupling fault.
Implement a kind of different faults degree of cage type asynchronous motor multiple faults coupled simulation experimental configuration method for designing
Experimental simulation construction design method is as follows：
Step one, different broken strip numbers, load the rotor containing different broken strip radicals in the stator, can be to different degrees of rotor broken bar
Failure is tested；
Step 2, the different degree of eccentricitys, the different eccentric overcoat of nesting eccentric distance in quiet capacity eccentric bearing outer ring can be quiet to difference inclined
Heart degree failure is tested；In the different eccentric inner sleeve of dynamic capacity eccentric bearing inner ring nesting eccentric distance, can be to the different dynamic degree of eccentricitys
Failure is tested；The different eccentric overcoat of nesting eccentric distance in mixing capacity eccentric bearing outer ring, inner ring nesting eccentric distance is not
Different mixing degree of eccentricity failures can be tested by same eccentric inner sleeve.
Claims (1)
1. the cage type asynchronous motor construction design method that a kind of multiple faults coupled simulation is tested, the construction design method include
The design of rotor bar breaking fault model configuration, the design of quiet fault of eccentricity model configuration, dynamic fault of eccentricity model configuration design, mixing are inclined
Heart fault simulation structure is designed and broken strip and eccentric coupling fault model configuration design；
The rotor bar breaking fault model configuration design is that have insulation spacer simulation to turn by the addition in the sliver of rotor mould
Sub- broken bar fault, physical simulation experimental configuration method for designing are as follows：
（1）According to rotor die parameters, make and rotor bar diameter identical insulation spacer；
（2）The insulation spacer is inserted in the sliver of rotor mould；
（3）Rotor is poured into a mould by existing process flow process so that insulation spacer is completely embedded in rotor bar；
（4）Eccentric correction is carried out to the rotor, is made rotor be broken strip but uninfluenced failure rotor, will be turned by insulation spacer
Sub- sliver is split into two parts of electric insulation to realize the simulation of rotor bar breaking fault；
The quiet fault of eccentricity model configuration design is by eccentric bushing simulation, its concrete mould are provided with bearing outer ring
Draft experiment construction design method is as follows：
（1）According to first wife's bearing size, select the quiet capacity eccentric bearing of same type, size meet：,；
（2）Eccentric overcoat size is；
（3）According to motor average airgap size, calculate the different quiet degree of eccentricitysEccentric distance；
（4）According to the eccentric distance, the eccentric overcoat of the different degree of eccentricitys of processing；
（5）Design back-up ring calculates quiet capacity eccentric bearing and first wife's bearing thickness difference, back-up ring to match the design parameter of former bearing (ball) cover
Width, wherein, back-up ring internal diameter is more than bearing bore diameter；
（6）Eccentric overcoat is nested in into bearing outer ring, and with back-up ring series winding in bearing (ball) cover, so that rotating shaft center of rotation
It is consistent with rotor center, realize quiet fault of eccentricity simulation；
The dynamic fault of eccentricity model configuration design is, by the setting-up eccentricity set on bearing inner race, and to change the bias of eccentric bushing
Distance, realizes the dynamic fault of eccentricity simulation of the different degree of eccentricitys, and physical simulation experimental configuration method for designing is as follows：
（1）According to first wife's bearing size, select the dynamic capacity eccentric bearing of same type, size meet：
；
（2）Eccentric inner sleeve size is；
（3）According to motor average airgap size, calculate the different dynamic degree of eccentricitysEccentric distance；
（4）According to the eccentric distance, the eccentric inner sleeve of the different degree of eccentricitys of processing；
（5）Back-up ring width；
（6）Eccentric inner sleeve is nested in into bearing inner race, and with back-up ring series winding in bearing (ball) cover, so that rotating shaft center of rotation
It is consistent with stator center, realize dynamic fault of eccentricity simulation；
The mixing fault of eccentricity model configuration design is by eccentric inner sleeve and bias are separately installed with bearing internal external footpath
Overcoat is simulated, and physical simulation experimental configuration method for designing is as follows：
（1）According to first wife's bearing size, select same type mixing capacity eccentric bearing, size meet：；
（2）Eccentric inner sleeve size is；Eccentric overcoat size is；
（3）According to motor average airgap size, the different quiet degree of eccentricitys are calculated respectivelyWith the eccentric distance of the dynamic degree of eccentricity,；
（4）By the eccentric distanceThe eccentric overcoat of the different degree of eccentricitys of processing, according to describedProcess the inclined of the different degree of eccentricitys
Intracardiac set；
（5）Back-up ring width；
（6）Eccentric overcoat is nested in into bearing outer ring, eccentric inner sleeve is nested in into bearing inner race, and with back-up ring series winding installed in axle
In socket end lid, so that rotating shaft center of rotation is a bit outside stator center and rotor center, mixing fault of eccentricity simulation is realized；
The broken strip and eccentric coupling fault simulation experiment structure method for designing are as follows：
（1）First wife's rotor is replaced by into broken strip rotor in asynchronous motor, installs quiet with eccentric overcoat in rotating shaft both sides
Capacity eccentric bearing, and make the minimum eccentric position of both sides eccentric overcoat in the same horizontal line, to ensure that machine shaft does not incline
Tiltedly, then the center of rotation of rotating shaft is rotor center, realizes that rotor broken bar is simulated with quiet eccentric coupling fault；
（2）First wife's rotor is replaced by into broken strip rotor in asynchronous motor, is installed with the dynamic of eccentric inner sleeve in rotating shaft both sides
Capacity eccentric bearing, and make the minimum eccentric position of both sides bias inner sleeve in the same horizontal line, to ensure that machine shaft does not incline
Tiltedly, then the center of rotation of rotating shaft is stator center, realizes that rotor broken bar is simulated with dynamic eccentric coupling fault；
（3）First wife's rotor is replaced by into broken strip rotor in asynchronous motor, is installed simultaneous with eccentric overcoat in rotating shaft both sides
With the mixing capacity eccentric bearing of eccentric inner sleeve, and make both sides eccentric overcoat and eccentric inner sleeve minimum eccentric position be in respectively it is same
On horizontal line, to ensure machine shaft not run-off the straight, then the center of rotation of rotating shaft is outside stator center and rotor center
A bit, realize rotor broken bar and mix eccentric coupling fault simulation.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112526340A (en) * | 2020-11-25 | 2021-03-19 | 同济大学 | Motor bearing eccentric fault simulation structure |
| CN114333519A (en) * | 2022-01-07 | 2022-04-12 | 中国石油大学(华东) | Drilling motor fault simulation training platform and use method |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112526340A (en) * | 2020-11-25 | 2021-03-19 | 同济大学 | Motor bearing eccentric fault simulation structure |
| CN112526340B (en) * | 2020-11-25 | 2021-09-03 | 同济大学 | Motor bearing eccentric fault simulation structure |
| CN114333519A (en) * | 2022-01-07 | 2022-04-12 | 中国石油大学(华东) | Drilling motor fault simulation training platform and use method |
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| CN106547988B (en) | 2019-05-28 |
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Effective date of registration: 20221212 Address after: 030027 Steel Building, No. 188, Xinghua West Street, Wanbailin District, Taiyuan, Shanxi Patentee after: SHANXI HUAKONGWEIYE TECHNOLOGY Co.,Ltd. Address before: 030024 No. 79 West Main Street, Wan Berlin District, Shanxi, Taiyuan, Yingze Patentee before: Taiyuan University of Technology |
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