CN106571707A - Generator rotor coil interturn insulation seamless splicing structure - Google Patents
Generator rotor coil interturn insulation seamless splicing structure Download PDFInfo
- Publication number
- CN106571707A CN106571707A CN201610957528.7A CN201610957528A CN106571707A CN 106571707 A CN106571707 A CN 106571707A CN 201610957528 A CN201610957528 A CN 201610957528A CN 106571707 A CN106571707 A CN 106571707A
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- Prior art keywords
- turn
- insulation
- turn insulation
- interturn
- layer
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K3/00—Details of windings
- H02K3/32—Windings characterised by the shape, form or construction of the insulation
- H02K3/34—Windings characterised by the shape, form or construction of the insulation between conductors or between conductor and core, e.g. slot insulation
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Insulation, Fastening Of Motor, Generator Windings (AREA)
- Manufacture Of Motors, Generators (AREA)
Abstract
The invention provides a generator rotor coil interturn insulation seamless splicing structure comprising a single layer interturn insulator bonded in a rotor coil linear portion and a dual-layer interturn insulator bonded in a rotor coil end portion arc area; an upper layer in a thickness direction of a set scope on two ends of the single layer interturn insulator is peeled off, and a bottom layer is left; the dual-layer interturn insulator comprises an upper layer interturn insulator and a lower layer interturn insulator, wherein the main body of the upper layer interturn insulator is bonded on the lower layer interturn insulator, and the end portion of the upper layer interturn insulator is bonded on the bottom layer left on the end portion of the single layer interturn insulator; the single layer interturn insulator, the upper layer interturn insulator and the lower layer interturn insulator are tightly matched so as to form seamless splicing. The seams on the rotor coil end portion arc area, the upper layer and lower layer of the dual-layer interturn insulator, and linear portion end portion interturn insulator are staggered so as to realize seamless splicing, thus improving rotor coil interturn insulator insulating properties, and providing reliable guarantee for rotor safe operations.
Description
Technical field
The present invention relates to a kind of electric generator rotor coil turn-to-turn insulation seamless splicing structure, it is adaptable to electric generator rotor coil
Turn-to-turn insulation structure, belongs to electric generator rotor coil technical field.
Background technology
In normal operation, the electromagnetic attraction that its air gap flux density is formed is in operation symmetrically and evenly to generator
Distribution.If there is turn-to-turn short circuit in rotor windings, a small amount of equally distributed turn-to-turn short circuit in rotor windings is turning
On son by cause very little and be the change of symmetrical magnetic flux distribution, can't now produce significant rotor and stator
Between uneven magnetic attraction and corresponding vibrations.
When rotor windings occur serious turn-to-turn short circuit, increase will rotor current, winding temperature is raised, limiting motor
Reactive power；Sometimes can also cause the vibration values of unit increases, or even by forced-stopping machine.
For generator amature, traditional turn-to-turn insulation is exhausted using the individual layer turn-to-turn of whole length in rotor coil straight line portion
Edge, then the individual layer turn-to-turn insulation of end circular arc portion and the turn-to-turn insulation of straight line are flushed, it is by adhesive that turn-to-turn is exhausted
Edge bonds together with copper bar rotor.Consider coil height, the adjacent turn-to-turn insulation of stitching portion does not allow the overlap joint that overlaps, and adopts
Direct splicing will inevitably produce piece.
Shown by field operation experiences, the generator amature winding of above-mentioned traditional turn-to-turn insulation structure, in operation
A little greasy dirts are easy to be piled up in edge joint position, reduce insulating properties at this, and shorted-turn fault mostly occurs in winding overhang, and absolutely
Most of trouble points all occur in the position of turn-to-turn insulation seam.Because in turn-to-turn insulation seam crossing, its insulation effect receives environment
The impact of factor is larger.
Also a kind of mode is that entirety adopts double hyer insulation, and this design margin evaluation is high, but every layer of insulation thickness is only
Have the 1/2 of individual layer, be easy to damage when manufacturing, repairing gets up relatively time-consuming, if not finding, exist certain hidden
Suffer from.The production technology of this structure is more relative complex, and this insulation system is to rely on integral rotor structure, is limited
Its versatility.
The content of the invention
The technical problem to be solved in the present invention is in generator amature turn-to-turn insulation structure design, how to improve due to circle
Between the insulation discontinuity that causes of insulating seam, to reduce the probability of rotor interturn short-circuit failure generation.
In order to solve above-mentioned technical problem, a kind of electric generator rotor coil turn-to-turn insulation of offer is the technical scheme is that
Seamless splicing structure, it is characterised in that：Including the individual layer turn-to-turn insulation for being bonded in rotor coil straight line portion and be bonded in turn
The double-deck turn-to-turn insulation of subcoil end circular arc sector；
The individual layer turn-to-turn insulation two ends setting range through-thickness is stripped one layer above, leaves bottom；
The double-deck turn-to-turn insulation is made up of upper strata turn-to-turn insulation and lower floor's turn-to-turn insulation, the main part of upper strata turn-to-turn insulation
Divide and be bonded in lower floor's turn-to-turn insulation, the end of upper strata turn-to-turn insulation is bonded on the bottom that individual layer turn-to-turn insulation end stays；
Individual layer turn-to-turn insulation, upper strata turn-to-turn insulation, lower floor's turn-to-turn insulation are fitted close each other, are formed seamless spliced.
Preferably, the bottom that lower floor's turn-to-turn insulation is stayed with individual layer turn-to-turn insulation end is connected, upper strata turn-to-turn insulation
Extend along the joining place, until covering whole individual layer turn-to-turn insulation end is stripped place, make upper strata turn-to-turn insulation and individual layer circle
Between insulate main part flush.
Preferably, lower floor's turn-to-turn insulation is identical with the thickness of the bottom that individual layer turn-to-turn insulation end stays, upper strata circle
Between the thickness that insulate be equal to individual layer turn-to-turn insulation end be stripped above one layer of thickness.
Preferably, lower floor's turn-to-turn insulation is different from the thickness of the bottom that individual layer turn-to-turn insulation end stays, lower floor's circle
Between form step between insulation and the bottom that stays of individual layer turn-to-turn insulation end, upper strata turn-to-turn insulation also forms in this place step,
By the matching of positive and negative step, realize seamless spliced.
It is highly preferred that the individual layer turn-to-turn insulation two ends setting range through-thickness is stripped half, and upper strata turn-to-turn
The thickness of insulation and lower floor's turn-to-turn insulation is the half of individual layer turn-to-turn insulation.
The present invention by rotor coil ends circular arc portion, by the levels of double-deck turn-to-turn insulation and straight line portion end
The seam dislocation arrangement of turn-to-turn insulation, realizes seamless spliced, it is ensured that the continuity of rotor coil turn-to-turn insulation, improves and turns
The insulating properties of subcoil turn-to-turn insulation, have been inherently eliminated the main factor for producing shorted-turn fault, are rotor
Safe operation provides reliable guarantee.
Description of the drawings
The electric generator rotor coil turn-to-turn insulation seamless splicing structure schematic diagram that Fig. 1 is provided for the present embodiment.
Specific embodiment
With reference to specific embodiment, the present invention is expanded on further.It should be understood that these embodiments are merely to illustrate the present invention
Rather than restriction the scope of the present invention.In addition, it is to be understood that after the content for having read instruction of the present invention, people in the art
Member can make various changes or modifications to the present invention, and these equivalent form of values equally fall within the application appended claims and limited
Scope.
The electric generator rotor coil turn-to-turn insulation seamless splicing structure schematic diagram that Fig. 1 is provided for the present embodiment, rotor coil
Including straight line portion and end circular arc sector, two ends straight line portion is connected by end circular arc sector.
Individual layer turn-to-turn insulation 1 is adopted in rotor coil straight line portion, and in a segment length at the two ends of individual layer turn-to-turn insulation 1
(length as needed sets itself) through-thickness opens a fork, tears from fork, so as to turn-to-turn insulation is divided into into two
Layer, peels off one section one layer above.
In rotor coil ends circular arc sector using double-deck turn-to-turn insulation, including upper strata turn-to-turn insulation 2 and lower floor's turn-to-turn it is exhausted
Edge 4, upper strata turn-to-turn insulation 2 is bonded in lower floor's turn-to-turn insulation 4.
The bottom that the end of individual layer turn-to-turn insulation 1 stays, the seam dislocation between upper strata turn-to-turn insulation 2, lower floor's turn-to-turn insulation 4
Arrangement, interworking size forms respectively positive and negative step, realizes seamless spliced.
The bottom that i.e. lower floor's turn-to-turn insulation 4 is stayed with the end of individual layer turn-to-turn insulation 1 is connected, and upper strata turn-to-turn insulation 2 is along the rank
Meet place and extend one end distance, until covering the whole end of individual layer turn-to-turn insulation 1 is stripped place, make upper strata turn-to-turn insulation 2 with list
The main part of layer turn-to-turn insulation 1 is flushed.
Wherein, lower floor's turn-to-turn insulation 4 and the thickness of the bottom that the end of individual layer turn-to-turn insulation 1 stays can with it is identical can not also
Together.When identical, the thickness of upper strata turn-to-turn insulation 2 be equal to the end of individual layer turn-to-turn insulation 1 be stripped above one layer of thickness.When
When different, between the bottom that lower floor's turn-to-turn insulation 4 and the end of individual layer turn-to-turn insulation 1 stay step, upper strata turn-to-turn insulation 2 can be formed
Step is also formed in this place, by the matching of positive and negative step, is realized seamless spliced.
Turn-to-turn insulation is bonded together with copper bar rotor 3 by adhesive.
It is preferred that, the two ends of individual layer turn-to-turn insulation 1 are stripped a half thickness, and upper strata turn-to-turn insulation 2 and lower floor's turn-to-turn insulation 4
Thickness is the half of individual layer turn-to-turn insulation 1, and specific implementation method is：
The first step, in rotor coil straight line portion by the way that adhesive is by the coarse turn-to-turn insulation 1 of the thick one sides of one layer of 0.4mm and turns
Sub- copper bar 3 is bonded together, and it is thick to 0.2mm to peel off half turn-to-turn insulation from top to bottom at two ends, peels off length and is not less than
25mm。
Second step, from rotor coil straight line terminates place, adhesive is passed through by one layer of 0.2mm in rotor coil circular arc portion
Thick two-sided coarse turn-to-turn insulation 4 is bonded together with copper bar rotor 3, it is desirable to flush with straight line portion turn-to-turn insulation.
3rd step, by adhesive again by the coarse turn-to-turn insulation 2 of one layer of 0.2mm thickness one side be bonded in above-mentioned 0.2mm it is thick at
Turn-to-turn insulation on.I.e. turn-to-turn insulation 2 is covered in turn-to-turn insulation 4, and the end of turn-to-turn insulation 1 is stripped the part of half
On.
Claims (5)
1. a kind of electric generator rotor coil turn-to-turn insulation seamless splicing structure, it is characterised in that：It is straight including rotor coil is bonded in
The individual layer turn-to-turn insulation (1) of line part and it is bonded in the double-deck turn-to-turn insulation of rotor coil ends circular arc sector；
Individual layer turn-to-turn insulation (1) two ends setting range through-thickness is stripped one layer above, leaves bottom；
The double-deck turn-to-turn insulation is made up of upper strata turn-to-turn insulation (2) and lower floor's turn-to-turn insulation (4), upper strata turn-to-turn insulation (2)
Main part is bonded in lower floor's turn-to-turn insulation (4), and the end of upper strata turn-to-turn insulation (2) is bonded in individual layer turn-to-turn insulation (1) end
On the bottom that portion stays；
Individual layer turn-to-turn insulation (1), upper strata turn-to-turn insulation (2), lower floor's turn-to-turn insulation (4) are fitted close each other, are formed seamless
Splicing.
2. a kind of electric generator rotor coil turn-to-turn insulation seamless splicing structure as claimed in claim 1, it is characterised in that：It is described
The bottom that lower floor's turn-to-turn insulation (4) is stayed with individual layer turn-to-turn insulation (1) end is connected, and upper strata turn-to-turn insulation (2) is along the joining place
Extend, until covering whole individual layer turn-to-turn insulation (1) end is stripped place, make upper strata turn-to-turn insulation (2) exhausted with individual layer turn-to-turn
The main part of edge (1) is flushed.
3. a kind of electric generator rotor coil turn-to-turn insulation seamless splicing structure as claimed in claim 2, it is characterised in that：It is described
Lower floor's turn-to-turn insulation (4) is identical with the thickness of the bottom that individual layer turn-to-turn insulation (1) end stays, the thickness of upper strata turn-to-turn insulation (2)
Degree equal to individual layer turn-to-turn insulation (1) end be stripped above one layer of thickness.
4. a kind of electric generator rotor coil turn-to-turn insulation seamless splicing structure as claimed in claim 2, it is characterised in that：It is described
Lower floor's turn-to-turn insulation (4) is different from the thickness of the bottom that individual layer turn-to-turn insulation (1) end stays, lower floor's turn-to-turn insulation (4) with it is single
Step is formed between the bottom that layer turn-to-turn insulation (1) end stays, upper strata turn-to-turn insulation (2) also forms in this place step, passes through
The matching of positive and negative step, realizes seamless spliced.
5. a kind of electric generator rotor coil turn-to-turn insulation seamless splicing structure as claimed in claim 3, it is characterised in that：It is described
Individual layer turn-to-turn insulation (1) two ends through-thickness is stripped half, and upper strata turn-to-turn insulation (2) and lower floor's turn-to-turn insulation (4)
Thickness is the half of individual layer turn-to-turn insulation (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610957528.7A CN106571707B (en) | 2016-11-03 | 2016-11-03 | A kind of electric generator rotor coil turn-to-turn insulation seamless splicing structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610957528.7A CN106571707B (en) | 2016-11-03 | 2016-11-03 | A kind of electric generator rotor coil turn-to-turn insulation seamless splicing structure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106571707A true CN106571707A (en) | 2017-04-19 |
| CN106571707B CN106571707B (en) | 2018-12-04 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610957528.7A Active CN106571707B (en) | 2016-11-03 | 2016-11-03 | A kind of electric generator rotor coil turn-to-turn insulation seamless splicing structure |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112510943A (en) * | 2020-11-27 | 2021-03-16 | 上海电气电站设备有限公司 | Rotor turn-to-turn insulation pre-glued filler strip and bonding method thereof |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20050133720A1 (en) * | 2002-06-18 | 2005-06-23 | Siemens Aktiengesellschaft | Corona shield, and method of making a corona shield |
| US8097996B1 (en) * | 2011-06-24 | 2012-01-17 | Dantam K Rao | Thermally conductive ground wall insulation for a stator bar |
| EP3001544A1 (en) * | 2014-09-29 | 2016-03-30 | Siemens Aktiengesellschaft | Active part as rotor or stator, method for the production of such an active part, and an electric machine |
| CN105471149A (en) * | 2015-12-21 | 2016-04-06 | 安徽威能电机有限公司 | Insulating structure of 690 V low-voltage high-power molding stator coil |
| US20160301274A1 (en) * | 2015-04-13 | 2016-10-13 | Hitachi, Ltd. | Rotating Electrical Machine Coil, Production Method of Rotating Electrical Machine Coil, and Rotating Electrical Machine |
-
2016
- 2016-11-03 CN CN201610957528.7A patent/CN106571707B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20050133720A1 (en) * | 2002-06-18 | 2005-06-23 | Siemens Aktiengesellschaft | Corona shield, and method of making a corona shield |
| US8097996B1 (en) * | 2011-06-24 | 2012-01-17 | Dantam K Rao | Thermally conductive ground wall insulation for a stator bar |
| EP3001544A1 (en) * | 2014-09-29 | 2016-03-30 | Siemens Aktiengesellschaft | Active part as rotor or stator, method for the production of such an active part, and an electric machine |
| US20160301274A1 (en) * | 2015-04-13 | 2016-10-13 | Hitachi, Ltd. | Rotating Electrical Machine Coil, Production Method of Rotating Electrical Machine Coil, and Rotating Electrical Machine |
| CN105471149A (en) * | 2015-12-21 | 2016-04-06 | 安徽威能电机有限公司 | Insulating structure of 690 V low-voltage high-power molding stator coil |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112510943A (en) * | 2020-11-27 | 2021-03-16 | 上海电气电站设备有限公司 | Rotor turn-to-turn insulation pre-glued filler strip and bonding method thereof |
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| Publication number | Publication date |
|---|---|
| CN106571707B (en) | 2018-12-04 |
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