CN106547988B - 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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Abstract
The invention discloses a kind of cage type asynchronous motor construction design methods of multiple faults coupled simulation experiment, the construction design method includes rotor bar breaking fault simulation and air-gap eccentric fault simulation, and broken strip and eccentric multiple faults coupled simulation, and contain crannied rotor by the way that insulation spacer production is added when being poured cage-type rotor, pass through 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, provide laboratory reference data for verifying motor fault theory.
Description
Technical field
The present invention relates to a kind of construction design method of asynchronous motor multiple faults coupled simulation experiment, especially a kind of use
In the construction design method to cage type asynchronous motor multiple faults coupling experiment.
Background technique
Motor is in During Process of Long-term Operation often because overload, assembling that rotor broken bar occur in the reasons such as improper and air gap is inclined
The failures such as the heart.Rotor bar breaking fault is mostly that conducting bar is broken 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 shaft is with rotor center
For rotation center；Dynamic bias refers to rotor decentraction, and shaft is using stator center as rotation center；Dynamic bias can induce static state
Bias, institute often exist simultaneously there are two types of fault of eccentricity, i.e. mixing is eccentric, and spindle central is stator center and turns when mixing is eccentric
Except subcenter a bit.And when broken bar fault occurs for rotor, 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 to determine
Rub-impact can lead to shutdown when serious.Carrying out experimental analysis to such failure has certain practical significance.
There are also patents to introduce asynchronous motor malfunction test method both at home and abroad.Wherein, rotor bar breaking fault is real
Testing is the punching model rotor broken bar fault on rotor bar, and there are biggish differences with practical broken strip situation for this；And air gap is inclined
Heart malfunction test is all to simulate quiet fault of eccentricity by mobile stator end cap, can not although fault degree can be set
Simulation is dynamic eccentric and mixes fault of eccentricity, can not also simulate broken strip and eccentric coupling fault.It can be with mould in consideration of it, designing one kind
Quasi- broken strip and eccentric single failure and coupling fault, and the experimental method of fault degree can be quantified, to be cage type asynchronous electricity
The monitoring and diagnosis of motivation complex fault provide basis, have important practical value.
Summary of the invention
The object of the present invention is to provide a kind of multiple faults coupled simulation experiment cage type asynchronous motor construction design method,
Motor after structure designs can model rotor broken strip and air gap eccentric centre single failure and to simulate two kinds of single failures same
When existing coupling fault, and be adjustable different faults degree.
To achieve 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 packet
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
The design of fault of eccentricity model configuration and broken strip and eccentric coupling fault model configuration design；
Rotor bar breaking fault model configuration design be by the conducting bar of rotor mold addition have insulation spacer mould
Quasi- rotor bar breaking fault, physical simulation experimental configuration design method are as follows:
(1) according to rotor die parameters, insulation spacer identical with rotor bar diameter is made；
(2) insulation spacer is placed in the conducting bar of rotor mold；
(3) it is poured rotor by prior art process, so that insulation spacer is completely embedded in rotor bar；
(4) eccentric correction is carried out to the rotor, makes rotor broken strip but uninfluenced failure rotor, passes through insulation spacer
Rotor bar 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 simulated by being equipped with eccentric bushing on bearing outer ring, tool
Body simulation experiment structure design method is as follows:
(1) according to first wife's bearing size, the quiet capacity eccentric bearing of same type is selected, size should meet:,；
(2) eccentric overcoat having a size of；
(3) according to motor average airgap size, calculate the different quiet degree of eccentricitysEccentric distance；
(4) according to the eccentric distance, process the eccentric overcoat of the different degree of eccentricitys；
(5) retaining ring is designed to match the design parameter of former bearing (ball) cover, calculates quiet capacity eccentric bearing and first wife's bearing thickness difference,
Retaining ring width, wherein retaining ring internal diameter is greater than bearing bore diameter；
(6) eccentric overcoat is nested in bearing outer ring, and is mounted in bearing (ball) cover with retaining ring series winding, so that shaft rotates
Center is consistent with rotor center, realizes quiet fault of eccentricity simulation；
The dynamic fault of eccentricity model configuration design is and to change eccentric bushing by the setting-up eccentricity set on bearing inner race
Eccentric distance realizes the dynamic fault of eccentricity simulation of the different degree of eccentricitys, and physical simulation experimental configuration design method is as follows:
(1) according to first wife's bearing size, same type is selected to move capacity eccentric bearing, size should meet:
；
(2) eccentric inner sleeve having a size of；
(3) according to motor average airgap size, calculate the different dynamic degree of eccentricitysEccentric distance；
(4) according to the eccentric distance, process the eccentric inner sleeve of the different degree of eccentricitys；
(5) retaining ring width；
(6) eccentric inner sleeve is nested in bearing inner race, and is mounted in bearing (ball) cover with retaining ring series winding, so that shaft rotates
Center is consistent with stator center, realizes dynamic fault of eccentricity simulation；
Mixing fault of eccentricity model configuration design be by be separately installed on bearing internal external diameter eccentric inner sleeve and
Eccentric overcoat is simulated, and physical simulation experimental configuration design method is as follows:
(1) according to first wife's bearing size, same type is selected to mix capacity eccentric bearing, size should meet:；
(2) eccentric inner sleeve having a size of；Eccentric overcoat having a size of；
(3) according to motor average airgap size, calculate separately the different quiet degree of eccentricitysWith the dynamic degree of eccentricityBias
Distance,；
(4) eccentric distance is pressedThe eccentric overcoat for processing the different degree of eccentricitys, according to describedProcess the different degree of eccentricitys
Eccentric inner sleeve；
(5) retaining ring width；
(6) eccentric overcoat is nested in bearing outer ring, eccentric inner sleeve is nested in bearing inner race, and contact and install with retaining ring
In bearing (ball) cover, so that shaft rotation center is a bit except stator center and rotor center, mixing fault of eccentricity is realized
Simulation；
The broken strip and eccentric coupling fault simulation experiment structure design method are as follows:
(1) first wife's rotor is changed to broken strip rotor in asynchronous motor, installation has eccentric overcoat in shaft two sides
Quiet capacity eccentric bearing, and make the minimum eccentric position of two sides eccentric overcoat in the same horizontal line, to guarantee that machine shaft is not sent out
Raw inclination, then the rotation center of shaft is rotor center, realizes that rotor broken bar and quiet eccentric coupling fault are simulated；
(2) first wife's rotor is changed to broken strip rotor in asynchronous motor, installation is with eccentric inner sleeve in shaft two sides
Dynamic capacity eccentric bearing, and make the minimum eccentric positions of two eccentricity inner sleeves in the same horizontal line, to guarantee that machine shaft is not sent out
Raw inclination, then the rotation center of shaft is stator center, realizes that rotor broken bar and dynamic eccentric coupling fault are simulated；
(3) first wife's rotor is changed to broken strip rotor in asynchronous motor, installed in shaft two sides simultaneous with bias
The mixing capacity eccentric bearing of housing and eccentric inner sleeve, and it is in two sides eccentric overcoat and the minimum eccentric position of eccentric inner sleeve respectively
In same horizontal line, to guarantee machine shaft not run-off the straight, then the rotation center of shaft be stator center and rotor center it
A bit outer realizes that rotor broken bar is simulated with eccentric coupling fault is mixed.
The present invention realizes the technical solution taken of above-mentioned purpose compared with prior art, has the advantage that and good effect
Be: 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, it is static it is eccentric, dynamic is eccentric, mixing is eccentric, broken strip and quiet eccentric coupling fault, broken strip with dynamic eccentric couple event
Barrier, broken strip and mix bias coupling fault, experimental implementation is simple, and simulation process is intuitive, with preferable flexibility and variability,
Especially suitable for universities and colleges and scientific research.
Detailed description of the invention
Fig. 1 is cage type asynchronous motor multiple faults coupled simulation experimental configuration design method 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 the quiet capacity eccentric bearing structural schematic diagram of the present invention.
Fig. 5 is the dynamic capacity eccentric bearing structural schematic diagram of the present invention.
Fig. 6 is present invention mixing capacity eccentric bearing structural schematic diagram.
In figure: 1- rotor end ring；2- rotor bar；3- insulation spacer；4- bearing outer ring；5- retainer；6- ball；7- axis
Hold inner ring；The quiet capacity eccentric bearing eccentric overcoat of 8-；9- retaining ring；10- moves capacity eccentric bearing bias inner sleeve；11- mixing capacity eccentric bearing is eccentric
Housing；12- mixing capacity eccentric bearing bias inner sleeve；B- bearing width；D- bearing outside diameter；Retaining ring width；D- bearing bore diameter；M- is inclined
The heart covers outer diameter；M- eccentric bushing internal diameter；H- retaining ring internal diameter；H- retaining ring outer diameter.
Specific embodiment
Objects, technical solutions and advantages to facilitate the understanding of the present invention, with reference to the accompanying drawing to specific reality of the invention
The mode of applying makes further instructions.
Implement a kind of above-mentioned provided cage type asynchronous motor structure design of multiple faults coupled simulation experiment of the present invention
The technical solution 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 design, the coupling event for mixing the design of fault of eccentricity model configuration and broken bar fault simulation and fault of eccentricity simulation
Hinder model configuration design；The structure design for implementing the experiment of multiple faults coupled simulation respectively is as follows.
As shown in Fig. 2, the model configuration design for implementing rotor bar breaking fault is by adding in the conducting bar of rotor mold
Add insulation spacer model rotor broken bar fault, steps are as follows for physical simulation experimental configuration design method:
Step 1 makes insulation spacer identical with rotor bar diameter dimension according to rotor die parameters；
Above-mentioned insulation spacer is added in (or several) conducting bar for rotor mold in step 2；
Step 3 is poured rotor according to normal prior art process, so that insulation spacer is completely embedded in rotor bar；
Step 4 carries out eccentric correction to above-mentioned rotor, makes rotor broken strip but uninfluenced failure rotor, realizes rotor
The simulation of broken bar fault.
It as shown in Fig. 3, is first wife's bearing arrangement schematic diagram, attached drawing 4 is the quiet of the quiet fault of eccentricity simulation of the present embodiment
Capacity eccentric bearing structural schematic diagram is simulated using the quiet fault of eccentricity of Y160M-6 asynchronous motor and is made in this embodiment
For embodiment, bearing designation 6309, steps are as follows for the physical simulation experimental configuration design method of quiet fault of eccentricity simulation:
Step 1 selects quiet capacity eccentric bearing according to first wife's bearing size, and size should meet claimed below: same type,,, it is to guarantee that the processing of eccentric ring can that the outer diameter of the 5mm, which cuts down surplus,
Row, the bearing width minimum value are to guarantee that bearing rigidity meets motor operation requirement；
Step 2, eccentric overcoat having a size of；
Step 3, according to motor average airgap size, calculate the different quiet degree of eccentricitysEccentric distance；
Step 4, according to the eccentric distance, process the eccentric overcoat of the different degree of eccentricitys；
Step 5, due to reducing bearing outside diameter, bearing width can also reduce, and need to design retaining ring, be held with matching primitive axis
The design parameter of end cap calculates quiet capacity eccentric bearing and first wife's bearing thickness difference, retaining ring width, wherein retaining ring internal diameter is conducive to convenient disassembly slightly larger than bearing bore diameter,
Realize quiet fault of eccentricity simulation.
It is capacity eccentric bearing structural schematic diagram as shown in Fig. 5, the physical simulation for implementing dynamic fault of eccentricity simulation tests knot
Steps are as follows for structure design method:
Step 1 selects dynamic capacity eccentric bearing according to first wife's bearing size, and size should meet claimed below: same type,；
Step 2, eccentric inner sleeve having a size of；
Step 3, according to motor average airgap size, calculate the different dynamic degree of eccentricitysEccentric distance；
Step 4, according to the eccentric distance, process the eccentric inner sleeve of the different degree of eccentricitys；
Step 5, retaining ring width, realize dynamic fault of eccentricity mould
It is quasi-.
It as shown in Fig. 6, is mixing capacity eccentric bearing structural schematic diagram, the physical simulation of mixing fault of eccentricity simulation tests knot
Steps are as follows for structure design method:
Step 1, according to first wife's bearing size, selection mixing capacity eccentric bearing, size should meet claimed below: same type,；
Step 2, eccentric inner sleeve having a size of；Eccentric overcoat having a size of；
Step 3, according to motor average airgap size, calculate separately the different quiet degree of eccentricitysIt is inclined with the dynamic degree of eccentricity
Heart distance,；
Step 4, according to the eccentric distanceThe eccentric overcoat for processing the different degree of eccentricitys, according to describedProcessing is different
The eccentric inner sleeve of the degree of eccentricity；
Step 5, retaining ring width, realize mixing fault of eccentricity mould
It is quasi-.
It is as follows that a kind of cage type asynchronous motor multiple faults coupled simulation experimental configuration design method is embodied:
Step 1: single broken bar fault, is packed into broken strip rotor in motor stator, identical first wife is installed in two ends of rotor
Bearing, assembling motor, the single broken bar fault of analog；
Step 2: single fault of eccentricity, is packed into normal rotor in motor stator, installed respectively in two ends of rotor identical
Quiet eccentric, dynamic eccentric, mixing capacity eccentric bearing, and guarantee that the minimum eccentric position of two groups of bearings is in same point relative to shaft,
Assembling motor, single quiet eccentric, the dynamic eccentric and mixing fault of eccentricity of analog；
Step 3: broken strip and quiet eccentric coupling fault, broken strip rotor is packed into motor stator, is pacified respectively in both ends of the shaft
It fills identical quiet capacity eccentric bearing, and guarantees that the minimum eccentric positions of two groups of bearings is in same point relative to shaft, assembling motor,
Analog broken strip and quiet eccentric coupling fault；
Step 4: broken strip and dynamic eccentric coupling fault, broken strip rotor is packed into motor stator, is pacified respectively in both ends of the shaft
It fills identical dynamic capacity eccentric bearing, and guarantees that the minimum eccentric positions of two groups of bearings is in same point relative to shaft, assembling motor,
Analog broken strip and dynamic eccentric coupling fault；
Step 5: broken strip with mix eccentric coupling fault, broken strip rotor is packed into motor stator, respectively in both ends of the shaft
Identical mixing capacity eccentric bearing is installed, and guarantees that the minimum eccentric position of two groups of bearings is in same point relative to shaft, is assembled
Motor, analog broken strip with mix eccentric coupling fault.
Implement a kind of different faults degree of cage type asynchronous motor multiple faults coupled simulation experimental configuration design method
It is as follows to test model configuration design method:
Step 1: different broken strip numbers, are packed into the rotor for containing different broken strip radicals in the stator, it can be to different degrees of rotor
Broken bar fault is tested；
Step 2: the different degree of eccentricitys can be to difference in the different eccentric overcoat of quiet capacity eccentric bearing outer ring nesting eccentric distance
Quiet degree of eccentricity failure is tested；It, can be dynamic to difference inclined in the different eccentric inner sleeve of dynamic capacity eccentric bearing inner ring nesting eccentric distance
Heart degree failure is tested；In the different eccentric overcoat of mixing capacity eccentric bearing outer ring nesting eccentric distance, inner ring nesting eccentricity
From different eccentric inner sleeves, different mixing degree of eccentricity failures can be tested.
Claims (1)
1. a kind of cage type asynchronous motor construction design method of multiple faults coupled simulation experiment, 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
The design of heart fault simulation structure and broken strip and eccentric coupling fault model configuration design；
Rotor bar breaking fault model configuration design be by the conducting bar of rotor mold addition there is insulation spacer simulation to turn
Sub- broken bar fault, physical simulation experimental configuration design method are as follows:
(1) according to rotor die parameters, insulation spacer identical with rotor bar diameter is made；
(2) insulation spacer is placed in the conducting bar of rotor mold；
(3) it is poured rotor by prior art process, so that insulation spacer is completely embedded in rotor bar；
(4) eccentric correction is carried out to the rotor, makes rotor broken strip but uninfluenced failure rotor, will turned by insulation spacer
Sub- conducting bar 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 simulated by being equipped with eccentric bushing on bearing outer ring, specific mould
Draft experiment construction design method is as follows:
(1) according to first wife's bearing size, the quiet capacity eccentric bearing of same type is selected, size should meet:,；
(2) eccentric overcoat having a size of；
(3) according to motor average airgap size, calculate the different quiet degree of eccentricitysEccentric distance；
(4) according to the eccentric distance, process the eccentric overcoat of the different degree of eccentricitys；
(5) retaining ring is designed to match the design parameter of former bearing (ball) cover, calculates quiet capacity eccentric bearing and first wife's bearing thickness difference, retaining ring
Width, wherein retaining ring internal diameter is greater than bearing bore diameter；
(6) eccentric overcoat is nested in bearing outer ring, and is mounted in bearing (ball) cover with retaining ring series winding, so that shaft rotation center
It is consistent with rotor center, realize quiet fault of eccentricity simulation；
The dynamic fault of eccentricity model configuration design is and to change the bias of eccentric bushing by the setting-up eccentricity set on bearing inner race
Distance realizes the dynamic fault of eccentricity simulation of the different degree of eccentricitys, and physical simulation experimental configuration design method is as follows:
(1) according to first wife's bearing size, same type is selected to move capacity eccentric bearing, size should meet:
；
(2) eccentric inner sleeve having a size of；
(3) according to motor average airgap size, calculate the different dynamic degree of eccentricitysEccentric distance；
(4) according to the eccentric distance, process the eccentric inner sleeve of the different degree of eccentricitys；
(5) retaining ring width；
(6) eccentric inner sleeve is nested in bearing inner race, and is mounted in bearing (ball) cover with retaining ring series winding, so that shaft rotation center
It is consistent with stator center, realize dynamic fault of eccentricity simulation；
The mixing fault of eccentricity model configuration design is by being separately installed with eccentric inner sleeve and bias on bearing internal external diameter
Housing is simulated, and physical simulation experimental configuration design method is as follows:
(1) according to first wife's bearing size, same type is selected to mix capacity eccentric bearing, size should meet:；
(2) eccentric inner sleeve having a size of；Eccentric overcoat having a size of；
(3) according to motor average airgap size, calculate separately the different quiet degree of eccentricitysWith the dynamic degree of eccentricityEccentric distance,；
(4) eccentric distance is pressedThe eccentric overcoat for processing the different degree of eccentricitys, according to describedProcess the inclined of the different degree of eccentricitys
Intracardiac set；
(5) retaining ring width；
(6) eccentric overcoat is nested in bearing outer ring, eccentric inner sleeve is nested in bearing inner race, and be mounted on axis with retaining ring series winding
In socket end lid, so that shaft rotation center is a bit except stator center and rotor center, mixing fault of eccentricity simulation is realized；
The broken strip and eccentric coupling fault simulation experiment structure design method are as follows:
(1) first wife's rotor is changed to broken strip rotor in asynchronous motor, installation is with the quiet of eccentric overcoat in shaft two sides
Capacity eccentric bearing, and make the minimum eccentric position of two sides eccentric overcoat in the same horizontal line, to guarantee that machine shaft does not incline
Tiltedly, then the rotation center of shaft is rotor center, realizes that rotor broken bar and quiet eccentric coupling fault are simulated；
(2) first wife's rotor is changed to broken strip rotor in asynchronous motor, installation is with the dynamic of eccentric inner sleeve in shaft two sides
Capacity eccentric bearing, and make the minimum eccentric positions of two eccentricity inner sleeves in the same horizontal line, to guarantee that machine shaft does not incline
Tiltedly, then the rotation center of shaft is stator center, realizes that rotor broken bar and dynamic eccentric coupling fault are simulated；
(3) first wife's rotor is changed to broken strip rotor in asynchronous motor, installed in shaft two sides simultaneous with eccentric overcoat
With the mixing capacity eccentric bearing of eccentric inner sleeve, and it is same to be in the minimum eccentric position of two sides eccentric overcoat and eccentric inner sleeve respectively
On horizontal line, to guarantee machine shaft not run-off the straight, then the rotation center of shaft is except stator center and rotor center
A bit, realize that rotor broken bar is simulated with eccentric coupling fault is mixed.
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| 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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| ES2615210T3 (en) * | 2011-06-29 | 2017-06-05 | Abb Research Ltd. | A method to identify a fault in an electric machine |
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| CN103698699A (en) * | 2013-12-06 | 2014-04-02 | 西安交通大学 | Asynchronous motor fault monitoring and diagnosing method based on model |
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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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