CN103135040B - A kind of high-voltage motor stator core slot part model device - Google Patents
A kind of high-voltage motor stator core slot part model device Download PDFInfo
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- CN103135040B CN103135040B CN201210569575.6A CN201210569575A CN103135040B CN 103135040 B CN103135040 B CN 103135040B CN 201210569575 A CN201210569575 A CN 201210569575A CN 103135040 B CN103135040 B CN 103135040B
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- voltage motor
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- tooth
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Abstract
The invention belongs to the high-voltage motor stator core slot part model device of technical field of motors, the more particularly to experiment of high voltage motor stator insulated local discharge.A kind of high-voltage motor stator core slot part model device, including bottom land seat, loose slot tooth, fastener, groove auxiliary equipment, the bottom land seat is by supporting bottom and fixing groove tooth to form, the fastener is by bottom land seat fastener, loose slot tooth fastener, fasten lamination device composition, the bottom land seat fastener is in the both sides at the support bottom, the loose slot tooth fastener is in the non-open slot one end of loose slot tooth, the fastening lamination device is compressed by fastening stack of laminations to be formed, the groove auxiliary equipment is by epoxy resin bonded fiber filler strip, semiconductive epoxy resin bonded fiber filler strip, slot wedge forms.The clamping device of prototype bar when the present invention can test as high voltage motor stator bar degradation and failure fingerprint extraction.
Description
Technical field
The invention belongs to the high-tension electricity of technical field of motors, the more particularly to experiment of high voltage motor stator insulated local discharge
Machine stator iron core groove portion model equipment.
Background technology
High-voltage motor running environment is severe, undergos various stress, its internal relatively fragile stator bar insulation
Structure can slowly aging, and ultimately result in electrical fault, cause huge economic losses.According to statistics, stator insulation failure accounts for motor
30% or so of failure.Therefore, insulated on-line monitoring is installed to high-voltage motor and early warning system is significant.Shelf depreciation can
Directly stator winding conductor bars in electrical machines insulation status in reflection operation, different electric discharge types, corresponding different failure situation.Carry out absolutely
The monitoring and early warning of edge shelf depreciation, it is necessary to which discharge characteristic spectrogram corresponding to clear and definite different faults type, this needs pass through making
Bar fault model, burin-in process is carried out to it, then apply voltage in the case where simulating prototype running environment as far as possible, obtain failure
Feature.The Gao Kai of Tsing-Hua University is published in August, 2001《Electrotechnics journal》That delivers " is generated electricity using moment characteristics
In the PD Pattern Recognition of machine bar model ", mention and be covered in bar surface using aluminium foil and do ground electrode use, to extract
Discharge signal；1999《Electric power network technique》" big motor stator bar specimen aging characteristics test electrode system to the article that Song Jiancheng is delivered
The experimental study of system ", describe a kind of new super-low resistance mixing paint vehicle electrode system.Although both the above earth electrode system
Help, but bar local environment during its experiment can be played to effectively extracting true discharge signal, it is embedding with true bar
The electrical environment and physical environment for entering iron core differ greatly.
Existing high-voltage motor bar model fault signature spectrogram, due to its line bar test environment in true motor not
Together, corresponding discharge spectrum often has untrue row and limitation, it is impossible to which reflection is embedded in bar insulation in stator core slot strictly according to the facts
Shelf depreciation situation, also can not just carry out monitor and early warning to high-voltage motor insulated health status.
The content of the invention
The technical problems to be solved by the invention are：How a kind of model equipment is provided, experiment bar is in true electricity
In machine stator iron core slot environment, so as to obtain really and accurately degradation failure fingerprint.
The technical solution adopted in the present invention is：A kind of high-voltage motor stator core slot part model device, including bottom land seat,
Loose slot tooth, fastener, groove auxiliary equipment, the bottom land seat by supporting bottom and fixing groove tooth to form, the fastener by
Bottom land seat fastener, loose slot tooth fastener, fastening lamination device composition, the bottom land seat fastener are in the branch
The both sides at bottom are supportted, the loose slot tooth fastener is in the both ends of the loose slot tooth, and the fastening lamination device is by fastening
Stack of laminations is compressed and formed, and the groove auxiliary equipment is by epoxy resin bonded fiber filler strip, semiconductive epoxy resin bonded fiber filler strip, slot wedge
Composition.
As a kind of preferred embodiment：It is described support bottom be length be 250mm, 400mm, 550mm, 700mm, 850mm,
1000mm, the steel plate of any one length, width are identical with the groove tooth fastener.
As a kind of preferred embodiment：The fixing groove tooth has open slot for described support above bottom at height on both sides 45mm
Groove tooth.
As a kind of preferred embodiment：The bottom land seat fastener is two pieces of angle bar with holes of fastening bolt connection.
As a kind of preferred embodiment：The loose slot tooth fastener is two blocks of steel plates with holes of fastening screw connection.
As a kind of preferred embodiment：The fastening lamination is industrial non-orientation silicon steel lamination, water-soluble by punch die, dipping
After half electrodeless lamination coating of property, dry to obtain.
As a kind of preferred embodiment：The epoxy resin bonded fiber filler strip, is industrial high-voltage motor bottom land filler strip material, thickness
For 1mm.
As a kind of preferred embodiment：The semiconductive epoxy resin bonded fiber filler strip, it is industrial high-voltage motor Pot Lining mat material
Material, thickness 0.5mm.
As a kind of preferred embodiment：The slot wedge is industrial magnetic drawing groove wedge.
The beneficial effects of the invention are as follows：The invention provides a kind of core length is optional, well width, length and depth are adjustable
High voltage motor stator insulated local discharge test core individual layer groove model equipment, high voltage motor stator bar aging can be used as
The clamping device of bar when experiment and the experiment of failure fingerprint extraction.
Brief description of the drawings
Fig. 1 is the structural representation of the present invention；
Fig. 2 is the front view of the present invention；
Fig. 3 is the side view of the present invention；
Fig. 4 is the top view of the present invention；
Fig. 5 is the structural representation of loose slot tooth of the present invention；
Fig. 6 is the structural representation of bottom land seat of the present invention.
Wherein, 1：Support bottom, 2, fixing groove tooth, 3, loose slot tooth, 4, bottom land seat fastener, 5, the fastening of loose slot tooth
Device, 6, fastening lamination device, 7, epoxy resin bonded fiber filler strip, 8, semiconductive epoxy resin bonded fiber filler strip, 9, slot wedge, 10, open
Mouth groove.
Embodiment
It is shown as shown in Figure 1, Figure 2, a kind of high-voltage motor stator core slot part model device, including bottom land seat, loose slot tooth,
Fastener, groove auxiliary equipment, by supporting bottom and fixing groove tooth to form, the fastener is fastened the bottom land seat by bottom land seat
Device, loose slot tooth fastener, fastening lamination device composition, the bottom land seat fastener are in the two of the support bottom
Side, the loose slot tooth fastener are in the both ends of the loose slot tooth, and the fastening lamination device is by fastening stack of laminations
Compression is formed, and the groove auxiliary equipment is made up of epoxy resin bonded fiber filler strip, semiconductive epoxy resin bonded fiber filler strip, slot wedge.
As shown in Fig. 3, support bottom, be a 4mm steel plates, length divide 250mm, 400mm, 550mm, 700mm, 850mm,
Six models of 1000mm, to coordinate different model bar to use, width is 180mm with bottom land fastener.Bottom land seat fastens
Device, be 120mm for two block lengths, specification is 45mm × 45mm × 4mm angle bar, bottom horizontal both ends far from end 15mm at
Hole is provided with, a length of 20mm is passed through from bottom, a diameter of 4mm fastening bolts, meanwhile, through four sides on support bottom on the upside of angle bar
Perforate, and be fixed on support baseboard both sides with nut.Loose slot tooth fastener is steel, specification be 40mm × 45mm ×
4mm, centre are provided with two a diameter of 3mm circular holes, passed through for fastening bolt.
Lamination is fastened as shown in Fig. 4, is industrial silicon steel sheet, the same support baseboard of its length, divides six models, it is same with groove
Height, it is 45mm, thickness 0.5mm.Epoxy resin bonded fiber filler strip, is industrial high-voltage motor bottom land filler strip material, thickness 1mm,
Width can be depending on experiment bar thickness.Semiconductive epoxy resin bonded fiber filler strip, it is industrial high-voltage motor Pot Lining cushion material,
Thickness is 0.5mm, and width can be depending on bar thickness.Slot wedge is industrial magnetic drawing groove wedge.Silicon used by the present apparatus
Steel lamination, it is non-orientation silicon steel lamination, thickness 0.5mm, after punch die, the dipping electrodeless lamination coating of water-soluble semi, dries
Obtain.
As shown in Fig. 5, Fig. 6, fixing groove tooth is the open slot groove tooth that height on both sides are 45mm above bottom land seat.
Installation method is as follows：
According to test wire bar gauge lattice, select the iron core trough floor of corresponding length, by its both ends by four fixing nuts with
After angle bar is fixed, bottom land seat opening upwards are positioned on bottom plate and alignd, are adjusted by increasing and decreasing bottom land seat silicon steel laminations quantity
Tightness, reaches compression effect, and after compression, fastening screw, angle are penetrated in the hole on the angle bar vertical edges both ends of both sides
Fastened on the outside of iron with nut, further step up bottom land seat；
The loose slot tooth with core lamination stack equal thickness and quantity is taken, is placed in parallel between the fixing groove tooth of heel piece two
Groove in, make on loose slot tooth with open slot side with heel piece carry open slot fixing groove tooth it is relative, adjust
After section lamination makes loose slot tooth smooth, fastened using groove tooth fastener, it is not moved relatively；
Experiment bar is put into groove, bar is compressed by inserting fastening lamination, ensures that it is not moved under external force；
Extract 1 ~ 2 fastening lamination out, take out bar, in the appropriate epoxy resin bonded fiber of trench bottom pad, the superiors put a piece of half
Conductive epoxy glass-cloth board；
Bar is embedded in again, and the fastening lamination extracted out before is pressed into again, it is ensured that bar not phase under external force
Iron core is moved；Slot wedge is squeezed into open slot with rubber hammer, the space between slot wedge and bar is by squeezing into the half of appropriate piece number
Conductive epoxy glass-cloth board is adjusted, and ensures to be fastened in groove in bar vertical direction.
Claims (9)
- A kind of 1. high-voltage motor stator core slot part model device, it is characterised in that：Including bottom land seat, loose slot tooth, fastening dress Put, groove auxiliary equipment, the bottom land seat by supporting bottom and fixing groove tooth to form, the fastener by bottom land seat fastener, Loose slot tooth fastener, fastening lamination device composition, the bottom land seat fastener is in the both sides at the support bottom, described Loose slot tooth fastener is in the both ends of the loose slot tooth, the fastening lamination device compressed by fastening stack of laminations and Into the groove auxiliary equipment is made up of epoxy resin bonded fiber filler strip, semiconductive epoxy resin bonded fiber filler strip, slot wedge.
- 2. high-voltage motor stator core slot part model device according to claim 1, it is characterised in that：The support bottom is Length is 250mm, 400mm, 550mm, 700mm, 850mm, 1000mm, the steel plate of any one length, width and the groove tooth Fastener is identical.
- 3. high-voltage motor stator core slot part model device according to claim 2, it is characterised in that：The fixing groove tooth To there is the groove tooth of open slot at height on both sides 45mm above the support bottom.
- 4. high-voltage motor stator core slot part model device according to claim 3, it is characterised in that：The bottom land seat is tight It is fixedly mounted with two pieces of angle bar with holes for being set to fastening bolt connection.
- 5. high-voltage motor stator core slot part model device according to claim 4, it is characterised in that：The loose slot tooth Fastener is two blocks of steel plates with holes of fastening screw connection.
- 6. according to the high-voltage motor stator core slot part model device described in claim 2-5 any claims, its feature It is：The fastening lamination is industrial non-orientation silicon steel lamination, after punch die, the dipping electrodeless lamination coating of water-soluble semi, Dry to obtain.
- 7. high-voltage motor stator core slot part model device according to claim 6, it is characterised in that：The expoxy glass Fabric swatch filler strip, is industrial high-voltage motor bottom land filler strip material, thickness 1mm.
- 8. high-voltage motor stator core slot part model device according to claim 6, it is characterised in that：The semiconductive ring Oxygen glass-cloth board filler strip, is industrial high-voltage motor Pot Lining cushion material, thickness 0.5mm.
- 9. high-voltage motor stator core slot part model device according to claim 6, it is characterised in that：The slot wedge is work Industry magnetic drawing groove wedge.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210569575.6A CN103135040B (en) | 2012-12-25 | 2012-12-25 | A kind of high-voltage motor stator core slot part model device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210569575.6A CN103135040B (en) | 2012-12-25 | 2012-12-25 | A kind of high-voltage motor stator core slot part model device |
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| Publication Number | Publication Date |
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| CN103135040A CN103135040A (en) | 2013-06-05 |
| CN103135040B true CN103135040B (en) | 2017-12-05 |
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| CN201210569575.6A Active CN103135040B (en) | 2012-12-25 | 2012-12-25 | A kind of high-voltage motor stator core slot part model device |
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| CN110221205B (en) * | 2019-06-26 | 2024-05-03 | 哈尔滨理工大学 | Magnetic resistance equivalent overlapping type slot-changing high large alternating current motor stator bar magnetic leakage simulation device |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5550629A (en) * | 1994-03-17 | 1996-08-27 | A R T Group Inc | Method and apparatus for optically monitoring an electrical generator |
| CN2686194Y (en) * | 2004-01-14 | 2005-03-16 | 东方电机股份有限公司 | Power generator stator winding in-slot bar fixing apparatus |
| CN201438652U (en) * | 2009-06-04 | 2010-04-14 | 水利部杭州机械设计研究所 | Stator wire rod fastening structure |
| CN101976925A (en) * | 2009-12-30 | 2011-02-16 | 天津市科麟机电设备有限公司 | High-efficiency permanent magnet DC brushless motor with low-rotate speed and universal moment and application |
| CN201846163U (en) * | 2010-11-10 | 2011-05-25 | 甘肃省电力公司刘家峡水电厂 | Fastening and reinforcing slot wedge for generator stator bar |
-
2012
- 2012-12-25 CN CN201210569575.6A patent/CN103135040B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5550629A (en) * | 1994-03-17 | 1996-08-27 | A R T Group Inc | Method and apparatus for optically monitoring an electrical generator |
| CN2686194Y (en) * | 2004-01-14 | 2005-03-16 | 东方电机股份有限公司 | Power generator stator winding in-slot bar fixing apparatus |
| CN201438652U (en) * | 2009-06-04 | 2010-04-14 | 水利部杭州机械设计研究所 | Stator wire rod fastening structure |
| CN101976925A (en) * | 2009-12-30 | 2011-02-16 | 天津市科麟机电设备有限公司 | High-efficiency permanent magnet DC brushless motor with low-rotate speed and universal moment and application |
| CN201846163U (en) * | 2010-11-10 | 2011-05-25 | 甘肃省电力公司刘家峡水电厂 | Fastening and reinforcing slot wedge for generator stator bar |
Non-Patent Citations (2)
| Title |
|---|
| 三峡电厂发电机定子线棒固定技术;余维坤;《中国三峡建设》;20041231(第06期);正文第19-23页 * |
| 大电机试样线棒老化特性测试;宋建成等;《电网技术》;19991031;第23卷(第10期);正文第19-23页 * |
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| CN103135040A (en) | 2013-06-05 |
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