CN105974287A - Stator core fault detection auxiliary device and detection method - Google Patents
Stator core fault detection auxiliary device and detection method Download PDFInfo
- Publication number
- CN105974287A CN105974287A CN201610499582.1A CN201610499582A CN105974287A CN 105974287 A CN105974287 A CN 105974287A CN 201610499582 A CN201610499582 A CN 201610499582A CN 105974287 A CN105974287 A CN 105974287A
- Authority
- CN
- China
- Prior art keywords
- fixed pulley
- slide block
- guide rail
- stay cord
- stator core
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
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Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/12—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing
- G01R31/1227—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing of components, parts or materials
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B5/00—Measuring arrangements characterised by the use of mechanical techniques
- G01B5/02—Measuring arrangements characterised by the use of mechanical techniques for measuring length, width or thickness
Abstract
The invention relates to a stator core fault detection auxiliary device, and the device comprises a guide rail capable of stretching between the stator and rotor of a generator, a sliding block, a first stay cord, a second stay cord, a fixed pulley, a coder, and a Chattock magnetic potentiometer. The sliding block is slidingly disposed on the guide rail, and the first and second stay cords are respectively connected to two ends of the sliding block. The bottom of the fixed pulley is provided with a substrate, and the central axis of the fixed pulley is provided with a rotating shaft. The fixed pulley is disposed on the substrate through a support. The fixed pulley is rotatingly disposed on the support through the rotating shaft. The rotating shaft extends to the outside of the fixed pulley, and the top of the fixed pulley and the sliding block are located on the same horizontal line. One end, far from the sliding block, of the first stay cord is disposed on the fixed pulley in a winding manner. The coder is disposed on the rotating shaft outside the fixed pulley, and the Chattock magnetic potentiometer is disposed on the sliding block.
Description
Technical field
The present invention relates to stator core fault ipping coil primary means technical field, particularly relate to stator
The auxiliary device of iron core fault detect and detection method thereof.
Background technology
The stator core of electromotor is the important component part in electric generator structure, and it plays offer
Magnetic loop, support electromotor are overall, the important function of fixed stator winding coil.Electromotor is fixed
Sub-core insulation is the most well to affect one of properly functioning key factor of electromotor.Work as stator
When damage occurs in insulation between the stalloy of iron core, eddy current will be produced at silicon steel sheet insulating injury region,
This eddy current by fault along stalloy Surface runoff, and can close with positioning bar or core through screw rod composition
Close loop, cause stator core inner heat.If this fault can not be solved timely and effectively
Certainly, the heat caused at eddy current can further heavy insulation degree of impairment, cause even more serious
Heating, thus constitutes vicious cycle.Stator core insulation damage not only affects stator core itself,
Time serious also can the insulating barrier of stator bar near destructive malfunction point, cause inside bar insulation layer
Electric discharge aggravation, and then cause the generation of stator winding inter-turn short circuit fault earth fault.
Stator core fault electromagnetic induction detection (electromagnetic core imperfection
Detector, ELCID) method, as a kind of more novel detection means, with traditional inspection
Survey core loss method to compare, have that excitation condition easily meets, wiring is simple, operation safety,
And iron core depths fault is had the advantages such as detectivity.
In the process of the test using ELCID device detection electricity generator stator core fault, need
Drag with dolly and carry the Chattock magnetic potentiometer adjacent two iron teeths along iron core longitudinally from generating
The slow scanning of machine stator one end is to the other end.Owing to dragging the dolly size carrying Chattock magnetic potentiometer
Relatively big, it is typically only capable under conditions of generator amature is extracted out just to carry out this test.But,
Rotor is extracted out the time at least needing to expend about one day in thorax, and is taking out the process of rotor
In be easy to because operate the most proper surface damage causing rotor and stator, there is the biggest wind
Danger.Based on factors above, during the actual checking experiment of electromotor, want without other
Seeking the checking experiment project that rotor must be extracted out, power plant typically will not select to take out rotor easily.As
Fruit is under these conditions it should be understood that whether stator core exists superficial failure and deep layer fault, existing
Some ELCID detection device will be unable to this task.
Summary of the invention
The present invention according to the deficiencies in the prior art, the present invention provides stator core fault detect
Auxiliary device and detection method thereof.
The present invention is achieved in that the auxiliary device of stator core fault detect, including can
Stretch into the guide rail between generator unit stator and rotor, slide block, the first stay cord, the second stay cord, determine
Pulley, encoder and Chattock magnetic potentiometer, described slide block is slidably mounted on described guide rail,
Described first stay cord and the second stay cord are connected to the two ends of described slide block, described fixed pulley
Bottom is provided with pedestal, is provided with rotating shaft at the axis of fixed pulley, and described fixed pulley passes through bracing frame
Being arranged on described pedestal, fixed pulley is arranged on support frame as described above by axis of rotation, described
Rotating shaft extends to the outside of described fixed pulley, and the top of described fixed pulley and described slide block are in same
On one horizontal line, the one end away from slide block on described first stay cord is wound on described fixed pulley,
Described encoder is arranged in the rotating shaft being in outside fixed pulley, and described Chattock magnetic potentiometer is pacified
It is contained on described slide block.
Further, the total height after described guide rail and slide block combine is not more than 10cm.
Further, described guide rail can extend its length by the way of splicing.
Further, the width of described guide rail is identical with the width of described Chattock magnetic potentiometer.
Further, described slide block is installed multiple roller, described roller and the orbital plane of guide rail
Laminating, slide block smoothly can be moved by described roller on guide rail.
Further, described guide rail and slide block all use non-conductive, not magnetic conduction, have good
The engineering plastics of mechanical strength and wearability are fabricated by.
Further, described first stay cord and the second stay cord all use non-conductive, not magnetic conduction, device
The high-strength nylon material that tool intensity is high, retractility is little is made.
Present invention also offers the detection method of the auxiliary device of said stator iron core fault detect,
Concrete detection method is as follows: first insert between generator unit stator and rotor by guide rail, holds the
Two stay cords, pull between entrance generator unit stator and rotor by slide block together with Chattock magnetic potentiometer,
Chattock magnetic potentiometer is the slowest from generator unit stator one end along adjacent two iron teeths of iron core
Speed scans the other end, and now the first stay cord drives fixed pulley to rotate, the rotating shaft band on fixed pulley
Dynamic encoder rotates, and encoder calculates now slide block according to external diameter and the rotation number of turns of fixed pulley
Position on guide rail, when scanning damage data, directly can read out on the encoder
The particular location damaged, data are accurately and reliably, it is not necessary to extracted out in thorax by rotor and can detect,
Not only save the time of detecting in a large number, and the surface damage of rotor and stator, safety will not be caused
Performance is good；
After detection, by pulling the first stay cord, first by slide block together with Chattock magnetic potential
Meter pulls out, is more slowly extracted out between generator unit stator and rotor by guide rail, convenient
Effective and rapid.
The auxiliary device of stator core fault detect that the present invention provides and detection method thereof excellent
Point is: the present invention is convenient to carry out, and encoder calculates according to external diameter and the rotation number of turns of fixed pulley
Go out now slide block position on guide rail, when scanning damage data, directly can be at coding
Reading out the particular location of damage on device, data are accurately and reliably, it is not necessary to taken out in thorax by rotor
Go out and can detect, not only save the time of detecting in a large number, and the table of rotor and stator will not be caused
Surface damage, security performance is good.
Accompanying drawing explanation
Fig. 1 is the front view of the auxiliary device of the stator core fault detect in the present invention；
Fig. 2 is the top view of Fig. 1；
Fig. 3 is the slide block in Fig. 1, guide rail and the structural representation of Chattock magnetic potentiometer.
Detailed description of the invention
In order to make the purpose of the present invention, technical scheme and advantage clearer, below in conjunction with
Drawings and Examples, are further elaborated to the present invention.Should be appreciated that this place is retouched
The specific embodiment stated only in order to explain the present invention, is not intended to limit the present invention.
See also Fig. 1 to Fig. 3, the stator core fault inspection during wherein Fig. 1 is the present invention
The front view of the auxiliary device surveyed；Fig. 2 is the top view of Fig. 1；Fig. 3 be the slide block in Fig. 1,
Guide rail and the structural representation of Chattock magnetic potentiometer.
The auxiliary device of described stator core fault detect, including can extend into generator unit stator and
Guide rail 10 between rotor, slide block the 20, first stay cord the 30, second stay cord 40, fixed pulley
50, encoder 60 and Chattock magnetic potentiometer 70, described slide block 20 is slidably mounted on described
On guide rail 10, described first stay cord 30 and the second stay cord 40 are connected to described slide block 20
Two ends, the bottom of described fixed pulley 50 is provided with pedestal 51, at the axis of fixed pulley 50
Being provided with rotating shaft 52, described fixed pulley 50 is arranged on described pedestal 51 by bracing frame 53,
Fixed pulley 50 is rotatably installed on support frame as described above 53 by rotating shaft 52, and described rotating shaft 52 is prolonged
Extend at the outside of described fixed pulley 50, the top of described fixed pulley 50 and described slide block 20
On same level line, the one end away from slide block 20 on described first stay cord 30 is wound on described
On fixed pulley 50, described encoder 60 is arranged in the rotating shaft 52 being in outside fixed pulley 50,
Described Chattock magnetic potentiometer 70 is arranged on described slide block 20.
Total height after described guide rail 10 and slide block 20 combine is not more than 10cm, described in lead
The width of rail 10 is identical with the width of described Chattock magnetic potentiometer 70, it is simple to stretch into electromotor
Between stator and rotor, prevent excessive, damage motor stator and rotor.
Described guide rail 10 can extend its length by the way of splicing, it is simple to detection difference rule
The electromotor of lattice.
Multiple roller 21, described roller 21 and the track of guide rail 10 is installed on described slide block 20
Fitting in face, slide block 20 smoothly can be moved by described roller 21 on guide rail, improves sliding
The slip efficiency of block 20.
Described guide rail 10 and slide block 20 all use non-conductive, not magnetic conduction, there is good machinery
The engineering plastics of intensity and wearability are fabricated by, described first stay cord 30 and the second stay cord 40
All use non-conductive, not magnetic conduction, instrument strength is high, retractility is little high-strength nylon material system
Become, prevent electrostatic, or conduction, magnetic conduction and affect the inspection of Chattock magnetic potentiometer 70
Survey data.
Present invention also offers the detection method of the auxiliary device of said stator iron core fault detect:
First guide rail 10 is inserted between generator unit stator and rotor, hold the second stay cord 40, will be sliding
Block 20 pulls between entrance generator unit stator and rotor together with Chattock magnetic potentiometer 70,
Chattock magnetic potentiometer 70 is longitudinal from generator unit stator one end along adjacent two iron teeths of iron core
Slow scanning is to the other end, and now the first stay cord 30 drives fixed pulley 50 to rotate, fixed pulley
Rotating shaft 52 on 50 drives encoder 60 to rotate, and encoder 60 is according to outside fixed pulley 50
Footpath and the rotation number of turns calculate the now slide block 20 position on guide rail 10, when scanning damage
During data, directly can read out the particular location of damage on encoder 60, data are accurate
Reliably, it is not necessary to rotor is extracted out in thorax and can detect, not only save the time of detecting in a large number,
And the surface damage of rotor and stator will not be caused, security performance is good；
After detection, by pulling the first stay cord 30, first by slide block 20 together with Chattock
Magnetic potentiometer 70 pulls out, is more slowly extracted out between generator unit stator and rotor by guide rail 10
, convenient and swift effectively.
The auxiliary device of stator core fault detect that the present invention provides and detection method thereof excellent
Point is: the present invention is convenient to carry out, and encoder calculates according to external diameter and the rotation number of turns of fixed pulley
Go out now slide block position on guide rail, when scanning damage data, directly can be at coding
Reading out the particular location of damage on device, data are accurately and reliably, it is not necessary to taken out in thorax by rotor
Go out and can detect, not only save the time of detecting in a large number, and the table of rotor and stator will not be caused
Surface damage, security performance is good.
The foregoing is only presently preferred embodiments of the present invention, not in order to limit the present invention,
All any amendment, equivalent and improvement etc. made within the spirit and principles in the present invention,
Should be included within the scope of the present invention.
Claims (8)
1. the auxiliary device of stator core fault detect, it is characterised in that include can extend into
Guide rail (10) between generator unit stator and rotor, slide block (20), the first stay cord (30),
Second stay cord (40), fixed pulley (50), encoder (60) and Chattock magnetic potentiometer (70),
Described slide block (20) is slidably mounted on described guide rail (10), described first stay cord (30)
With the two ends that the second stay cord (40) is connected to described slide block (20), described fixed pulley (50)
Bottom be provided with pedestal (51), be provided with rotating shaft (52), institute at the axis of fixed pulley (50)
State fixed pulley (50) to be arranged on described pedestal (51) by bracing frame (53), fixed pulley
(50) it is rotatably installed on support frame as described above (53) by rotating shaft (52), described rotating shaft (52)
Extend to the outside of described fixed pulley (50), the top of described fixed pulley (50) and described cunning
Block (20) is on same level line, on described first stay cord (30) away from slide block (20)
One end be wound on described fixed pulley (50), described encoder (60) is arranged on to be in determines cunning
In the rotating shaft (52) that wheel (50) is outside, described Chattock magnetic potentiometer (70) is arranged on institute
State on slide block (20).
The auxiliary device of stator core fault detect the most according to claim 1, it is special
Levying and be, the total height after described guide rail (10) and slide block (20) combine is not more than 10cm.
The auxiliary device of stator core fault detect the most according to claim 2, it is special
Levying and be, described guide rail (10) can extend its length by the way of splicing.
The auxiliary device of stator core fault detect the most according to claim 1, it is special
Levy and be, the width of described guide rail (10) and the width of described Chattock magnetic potentiometer (70)
Identical.
The auxiliary device of stator core fault detect the most according to claim 1, it is special
Levy and be, the upper multiple rollers (21) of installing of described slide block (20), described roller (21) and
The orbital plane laminating of guide rail (10), slide block (20) can led by described roller (21)
Smoothly move on rail.
The auxiliary device of stator core fault detect the most according to claim 1, it is special
Levy and be, described guide rail (10) and slide block (20) all use non-conductive, not magnetic conduction, have
Good mechanical strength and the engineering plastics of wearability are fabricated by.
The auxiliary device of stator core fault detect the most according to claim 1, it is special
Levy and be, described first stay cord (30) and the second stay cord (40) all use non-conductive, do not lead
The high-strength nylon material that magnetic, instrument strength are high, retractility is little is made.
8. according to the auxiliary of the stator core fault detect described in claim 1～7 any one
Device, it is characterised in that its detection method is: first guide rail (10) is inserted electromotor fixed
Between son and rotor, hold the second stay cord (40), by slide block (20) together with Chattock magnetic
Position meter (70) pulls between entrance generator unit stator and rotor, Chattock magnetic potentiometer (70)
Along iron core adjacent two iron teeths longitudinally from the slow scanning of generator unit stator one end to the other end,
Now the first stay cord (30) drives fixed pulley (50) to rotate, the rotating shaft on fixed pulley (50)
(52) driving encoder (60) to rotate, encoder (60) is according to outside fixed pulley (50)
Footpath and the rotation number of turns calculate the now slide block (20) position on guide rail (10), work as scanning
To when damaging data, the particular location of damage directly can be read out on encoder (60),
Data are accurately and reliably, it is not necessary to extracted out in thorax by rotor and can detect, and not only save a large amount of inspection
The survey time, and the surface damage of rotor and stator will not be caused, security performance is good；
When detection after, by pulling the first stay cord (30), first by slide block (20) together with
Chattock magnetic potentiometer (70) pulls out, then from generator unit stator and is turned by guide rail (10)
Slowly extract out between son, convenient and swift effectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610499582.1A CN105974287A (en) | 2016-06-28 | 2016-06-28 | Stator core fault detection auxiliary device and detection method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610499582.1A CN105974287A (en) | 2016-06-28 | 2016-06-28 | Stator core fault detection auxiliary device and detection method |
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| Publication Number | Publication Date |
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| CN105974287A true CN105974287A (en) | 2016-09-28 |
Family
ID=56953653
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610499582.1A Pending CN105974287A (en) | 2016-06-28 | 2016-06-28 | Stator core fault detection auxiliary device and detection method |
Country Status (1)
| Country | Link |
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| CN (1) | CN105974287A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107508437A (en) * | 2017-08-30 | 2017-12-22 | 中广核核电运营有限公司 | Electricity generator stator core experimental rig and method |
| CN108318818A (en) * | 2018-05-14 | 2018-07-24 | 贵州电网有限责任公司 | A kind of electricity generator stator core fault testing apparatus and its test method |
| CN108318816A (en) * | 2018-03-05 | 2018-07-24 | 中国大唐集团科学技术研究院有限公司华东分公司 | A kind of device and method that not taking out rotor and complete the test of generator overhaul status assessment |
| CN108631521A (en) * | 2018-05-14 | 2018-10-09 | 贵州电网有限责任公司 | A kind of draft gear for electricity generator stator core fault test |
| CN110307773A (en) * | 2019-08-21 | 2019-10-08 | 中车株洲电机有限公司 | A kind of band set group stator core three-phase lead-out wire measurement and positioning device and method |
| CN110514969A (en) * | 2019-07-29 | 2019-11-29 | 国网河北省电力有限公司电力科学研究院 | Electricity generator stator core insulation detection device and detection method |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107508437A (en) * | 2017-08-30 | 2017-12-22 | 中广核核电运营有限公司 | Electricity generator stator core experimental rig and method |
| CN108318816A (en) * | 2018-03-05 | 2018-07-24 | 中国大唐集团科学技术研究院有限公司华东分公司 | A kind of device and method that not taking out rotor and complete the test of generator overhaul status assessment |
| CN108318818A (en) * | 2018-05-14 | 2018-07-24 | 贵州电网有限责任公司 | A kind of electricity generator stator core fault testing apparatus and its test method |
| CN108631521A (en) * | 2018-05-14 | 2018-10-09 | 贵州电网有限责任公司 | A kind of draft gear for electricity generator stator core fault test |
| CN108318818B (en) * | 2018-05-14 | 2023-12-19 | 贵州电网有限责任公司 | Generator stator core fault testing device and testing method thereof |
| CN108631521B (en) * | 2018-05-14 | 2024-01-19 | 贵州电网有限责任公司 | Traction device for fault test of stator core of generator |
| CN110514969A (en) * | 2019-07-29 | 2019-11-29 | 国网河北省电力有限公司电力科学研究院 | Electricity generator stator core insulation detection device and detection method |
| CN110307773A (en) * | 2019-08-21 | 2019-10-08 | 中车株洲电机有限公司 | A kind of band set group stator core three-phase lead-out wire measurement and positioning device and method |
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