CN208571764U - A kind of stator coil of Single-layer Windings high voltage permanent variable-frequency motor - Google Patents
A kind of stator coil of Single-layer Windings high voltage permanent variable-frequency motor Download PDFInfo
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- CN208571764U CN208571764U CN201821261245.XU CN201821261245U CN208571764U CN 208571764 U CN208571764 U CN 208571764U CN 201821261245 U CN201821261245 U CN 201821261245U CN 208571764 U CN208571764 U CN 208571764U
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Abstract
The utility model relates to a kind of stator coils of Single-layer Windings high voltage permanent variable-frequency motor, including the coil with straightway and bending section, the anti-corona structure being arranged on the straightway and bending section of the coil outside iron core slot, anti-corona structure includes the first low-resistance belt being arranged on the straightway of coil, high stop band on the bending section of first low-resistance belt and coil is set, mica tape in high stop band is set, it is arranged in the first low-resistance belt, the second low-resistance belt on mica tape and high stop band, the end part aligning of mica tape and the close iron core slot of high stop band, mica tape around packet length be less than high stop band around packet length.Pass through the optimization of the anti-corona structure to coil, reduce the current potential of stator coil surfaces, maintain the steady of coil surface current potential, avoid the concentration of local potential, the anti-corona effect of coil is substantially improved, to solve the problems, such as that coil will appear end electric discharge, extends the service life of unit, and the production is simple and convenient for the anti-corona structure of the coil, it is at low cost.
Description
Technical field
The utility model relates to a kind of stator coils of Single-layer Windings high voltage permanent variable-frequency motor.
Background technique
Single-layer Windings high voltage permanent variable-frequency motor coil, is generally used for mass transport equipment and spin finishing equipment.With
The motor speed of the coil turns left the right side down to per minute 20, does not need conventional motors and reuses reduction gearbox to reduce motor operating speed
Degree.The electrical-coil of conventional alternating current generator is all to be produced by the way of lap winding, and Single-layer Windings high voltage permanent becomes
Frequency electrical-coil be by the way of Single-layer Windings, i.e., coil using one across a pitch by the way of, such coil can have
Copper factor is made full use of in the stator slot of limit, reaches the power for promoting motor.But due to such coil cross-slot is few, end
The case where portion's size is short, and offline gap is less than general standard value, and overhang is caused to will appear electric discharge.
4100 meters of high-altitude hydro-generator insulation structures of 10.5KV grade (CN 1034013336B) of the prior art, including
A kind of iron core and coil, the outer surface of coil are provided with low resistance structure and high resistance structure, and low resistance structure is included in coil
The low-resistance belt that outer surface is wrapped up and the paint layer coated on low resistance with outer surface, the side of high resistance structure and low resistance structure
Edge overlap joint.The insulation system of the prior art is suitable for 4100 meters of high-altitude hydro-generators of 10.5KV grade, and guarantee unit can be
It is operated normally in the environment of High aititude, solves the problems, such as electric discharge when operation, extend the service life of unit.The insulation of the prior art
Structure is suitable for the hydrogenerator of high altitude localities, and the resistance to environmental requirement of insulation system is high, therefore for the anti-of insulating mechanism
The material of dizzy structure part requires height, and needs coating paint layer, and making sheet resistance that is more complex and actually brushing can be uneven,
It is at high cost.
Utility model content
The Single-layer Windings that the technical problem to be solved by the present invention is to provide a kind of anti-corona structures is good, the production is simple and convenient
The stator coil of high voltage permanent variable-frequency motor.
In order to solve the above-mentioned technical problem, the technical solution adopted in the utility model is:
A kind of stator coil of Single-layer Windings high voltage permanent variable-frequency motor, including with straightway and with the straightway
The straightway of the coil for the bending section being connected, coil described in part is located in iron core slot, and the stator coil further includes
The anti-corona structure being arranged on the straightway and bending section of the coil outside the iron core slot, the anti-corona knot
Structure includes being arranged on the straightway of the coil and being located at the straightway and institute far from the end of the iron core slot
First low-resistance belt of the junction for the bending section stated is arranged on the bending section of first low-resistance belt and the coil
The mica tape in the high stop band is arranged in high stop band, and first low-resistance belt, the mica tape and described is arranged in
High stop band on the second low-resistance belt, the mica tape close to the end of the iron core slot and leaning on for the high stop band
The end part aligning of the iron core slot, the mica tape around packet length be less than the high stop band around packet length.
In the utility model, the mica tape around packet length be along the coil length direction it is described
The one end of mica tape to the other end distance, the high stop band around packet length be along the coil length side
To the high stop band one end to the other end distance.
Specifically, the coil include flat type copper wire, the main insulating layer that is arranged in above the flat type copper wire.
Preferably, the flat type copper wire has one or more.
Specifically, the one end close to the iron core slot of first low-resistance belt connects with the one end of iron core
Touching.
Specifically, first low-resistance belt around packet length be 40-60mm.
In the utility model, first low-resistance belt around packet length for along the institute of the length direction of the coil
Distance of the one end for the first low-resistance belt stated to the other end.
Specifically, the high stop band around packet length be 40-60mm.
Preferably, overlapped that length is 10-30mm for first low-resistance belt and the high stop band.
Specifically, the mica tape is low resin mica tape.
Preferably, the mica tape around packet length be 30-50mm.
Specifically, second low-resistance belt around packet length be 50-70mm.
In the utility model, second low-resistance belt around packet length for along the institute of the length direction of the coil
Distance of the one end for the second low-resistance belt stated to the other end.
Specifically, the coil is annular.
The scope of the utility model, however it is not limited to technical solution made of the specific combination of above-mentioned technical characteristic, while
The other technical solutions for being carried out any combination by above-mentioned technical characteristic or its equivalent feature and being formed should be covered.Such as features described above
The technical solution that with (but being not limited to) disclosed herein there is the technical characteristic of similar functions to be replaced mutually and formed
Deng.
Since above-mentioned technical proposal is used, the utility model has the advantage that compared with prior art
The utility model is reduced the current potential of stator coil surfaces, is maintained by the optimization of the anti-corona structure to coil
Coil surface current potential it is steady, avoid the concentration of local potential, substantially improve the anti-corona effect of coil, to solve coil meeting
There is the problem of end electric discharge, extends the service life of unit, and the production is simple and convenient for the anti-corona structure of the coil, it is at low cost.
Detailed description of the invention
Attached drawing 1 is the sectional view of the utility model top view；
Attached drawing 2 is the partial enlarged view of attached drawing 1；
Attached drawing 3 is the structural schematic diagram of comparative example；
Wherein: 1, straightway；2, bending section；3, the first low-resistance belt；4, high stop band；5, mica tape；6, the second low-resistance belt；
71, main insulating layer；72, flat type copper wire；73, iron core.
Specific embodiment
As shown in attached drawing 1-2, a kind of stator coil of Single-layer Windings high voltage permanent variable-frequency motor of the utility model, including
The straightway 1 of coil with straightway 1 and the bending section being connected with straightway 12, coil sections is located in iron core slot, fixed
Subcoil further includes the anti-corona structure on the straightway 1 and bending section 2 for the coil being arranged in outside iron core slot, anti-corona structure packet
Include the end being arranged on the straightway 1 of coil and far from iron core slot be located at straightway 1 and bending section 2 junction it is first low
The high stop band 4 on the bending section 2 of the first low-resistance belt 3 and coil is arranged in stopband 3, and the mica tape 5 in high stop band 4 is arranged in, if
Set the second low-resistance belt 6 in the first low-resistance belt 3, mica tape 5 and high stop band 4, the end of the close iron core slot of mica tape 5 and height
The end part aligning of the close iron core slot of stopband 4, mica tape 5 around packet length be less than high stop band 4 around packet length, the first low-resistance belt
The one end of close iron core slot be in contact with the one end of iron core.
In the present embodiment, coil is annular.The main insulating layer that coil includes flat type copper wire 72, is arranged in above flat type copper wire 72
71.Flat type copper wire 72 has one or more.
The length of first low-resistance belt 3 is 40-60mm；The length of high stop band 4 is 40-60mm；First low-resistance belt 3 and high stop band
4 overlapped length are 10-30mm；Mica tape 5 is low resin mica tape, and the length of mica tape 5 is 30-50mm；Second low-resistance belt 6
Length is 50-70mm.
Embodiment:
As shown in attached drawing 1-2, it is two circles that flat type copper wire 72, which is two and winding turns, in anti-corona structure: the first low-resistance belt 3
Length is 50mm；The length of high stop band 4 is 50mm；Overlapped that length is 20mm for first low-resistance belt 3 and high stop band 4；Mica tape 5
Length is 40mm；The length of second low-resistance belt 6 is 60mm.
Comparative example:
As shown in Fig. 3, the outer surface of coil 2 is provided with low resistance structure and high resistance structure, and low resistance structure includes
The paint layer 4 of the low-resistance belt 3 of package and coating and 3 surface of low-resistance belt in 2 outer surface of coil, high resistance structure is included in coil
The high stop band 5 of 2 outer surfaces package and the high resistant paint layer 6 of coating and 5 outer surface of high stop band, high resistance structure and low resistance structure
The outside of overlapping edges, low resistance structure and high resistance structure is also enclosed with one layer of surrounding layer.Bridging arrangement is that high stop band 5 is placed in
Between low-resistance belt 3 and paint layer 4, paint layer 4 is placed between high stop band 5 and high resistant paint layer 6.
Coil 2 includes from direction successively straight line portion and the end close to wire casing end side to 2 wiring end of coil, high resistant
Distance of the end apart from end tip with 55 be bent segment length 1/3,66 end of high resistant paint layer apart from end tip away from
From 1/2 for bending segment length.
The height of high altitude localities will be used according to JBT8439-2008 using stator coil made from embodiment, comparative example
Alternating current generator corona protected technique is pressed to require to carry out the test of corona inception voltage, test result see the table below.
| Copper factor | Corona inception voltage | |
| Embodiment | 92.5% | 1.5un not bloom |
| Comparative example | 89% | 1.3un not bloom |
As described above, we are illustrated fully according to the objective of the utility model, but the utility model not limits to
In above-described embodiment and implementation method.The range that the practitioner of correlative technology field can permit in the technical idea of the utility model
It is interior to carry out different variation and implementation.
Claims (10)
1. a kind of stator coil of Single-layer Windings high voltage permanent variable-frequency motor, including with straightway (1) and with the straight line
The straightway (1) of the coil of bending section (2) that section (1) is connected, coil described in part is located in iron core slot, the stator
Coil further includes anti-corona on the straightway (1) and bending section (2) for the coil being arranged in outside the iron core slot
Structure, it is characterised in that: the anti-corona structure includes being arranged on the straightway (1) of the coil and far from the iron
The end of core slot is located at the first low-resistance belt (3) of the junction of the straightway (1) and the bending section (2), and setting exists
High stop band (4) on the bending section (2) of first low-resistance belt (3) and the coil, is arranged in the high stop band (4)
On mica tape (5), be arranged in first low-resistance belt (3), the mica tape (5) and the high stop band (4)
Second low-resistance belt (6), end and the high stop band (4) close to the iron core slot of the mica tape (5) it is close
The end part aligning of the iron core slot, the wrapped length for being less than the high stop band (4) around packet length of the mica tape (5)
Degree.
2. stator coil according to claim 1, it is characterised in that: the coil include flat type copper wire (72), setting exist
The main insulating layer (71) of the flat type copper wire (72) above.
3. stator coil according to claim 2, it is characterised in that: the flat type copper wire (72) has one or more.
4. stator coil according to claim 1, it is characterised in that: first low-resistance belt (3) close to described
The one end of iron core slot is in contact with the one end of iron core (73).
5. stator coil according to claim 1, it is characterised in that: the length of first low-resistance belt (3) is 40-
60mm。
6. stator coil according to claim 1, it is characterised in that: the length of the high stop band (4) is 40-60mm.
7. stator coil according to claim 1 or 6, it is characterised in that: first low-resistance belt (3) and the height
Stopband (4) overlapped length is 10-30mm.
8. stator coil according to claim 1, it is characterised in that: the mica tape (5) is low resin mica tape.
9. stator coil according to claim 1 or 8, it is characterised in that: the length of the mica tape (5) is 30-
50mm。
10. stator coil according to claim 1, it is characterised in that: the length of second low-resistance belt (6) is 50-
70mm。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821261245.XU CN208571764U (en) | 2018-08-07 | 2018-08-07 | A kind of stator coil of Single-layer Windings high voltage permanent variable-frequency motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821261245.XU CN208571764U (en) | 2018-08-07 | 2018-08-07 | A kind of stator coil of Single-layer Windings high voltage permanent variable-frequency motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208571764U true CN208571764U (en) | 2019-03-01 |
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ID=65449603
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821261245.XU Active CN208571764U (en) | 2018-08-07 | 2018-08-07 | A kind of stator coil of Single-layer Windings high voltage permanent variable-frequency motor |
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| CN (1) | CN208571764U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111371269A (en) * | 2020-04-26 | 2020-07-03 | 哈尔滨电机厂有限责任公司 | Manufacturing method of stator bar for improving winding corona voltage |
-
2018
- 2018-08-07 CN CN201821261245.XU patent/CN208571764U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111371269A (en) * | 2020-04-26 | 2020-07-03 | 哈尔滨电机厂有限责任公司 | Manufacturing method of stator bar for improving winding corona voltage |
| CN111371269B (en) * | 2020-04-26 | 2022-05-20 | 哈尔滨电机厂有限责任公司 | Manufacturing method of stator bar for improving winding corona-starting voltage |
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