CN107546896A - Large-capacity air-cooled generator unit stator groove inner fixing device and its implementation - Google Patents
Large-capacity air-cooled generator unit stator groove inner fixing device and its implementation Download PDFInfo
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- CN107546896A CN107546896A CN201610467700.0A CN201610467700A CN107546896A CN 107546896 A CN107546896 A CN 107546896A CN 201610467700 A CN201610467700 A CN 201610467700A CN 107546896 A CN107546896 A CN 107546896A
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- pad
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- enlarged slot
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Abstract
The present invention relates to generator techniques, and the invention discloses a kind of large-capacity air-cooled generator unit stator groove inner fixing device, it specifically includes stator core, stator coil, side spacers and corrugated plating；Inserting slot is opened on the stator core, enlarged slot is opened on the side of inserting slot, stator coil is placed in inserting slot, and side spacers are filled between stator coil and stator core, and corrugated plating is squeezed into enlarged slot.The invention also discloses fix implementation method in groove：Step 1: open enlarged slot in stator core inserting slot, after stator coil is offline, technique wedge is squeezed into expanding groove location, by coil position wedge just and wedge to inserting slot opposite side；Step 2: filling in the first pad in gap between enlarged slot, technique wedge is then extracted；Step 3: squeeze into corrugated plating and the second pad expanding groove location.While making stator coil fixed in groove, the heat transfer also between iron core is good, and stator coil can also in iron core axial thermal expansion.
Description
Technical field
The present invention relates to technical field of generators, more particularly to large-capacity air-cooled generator unit stator groove inner fixing device and its
Implementation method.
Background technology
In domestic existing stator slot fixed solution be all by stator coil wedging in stator slot, and less consider its with
The heat transfer of stator core, less consider freely stretching for its.Such scheme can not be applied to the air cooled generator of Large Copacity.
The content of the invention
The technology for the air cooled generator that can not be applied to Large Copacity for stator coil fixed solution of the prior art is asked
Topic, the invention discloses a kind of large-capacity air-cooled generator unit stator groove inner fixing device and its implementation.
The specific implementation of the present invention is as follows：
A kind of large-capacity air-cooled generator unit stator groove inner fixing device, it specifically includes stator core, stator coil, side spacers
And corrugated plating；Inserting slot is opened on the stator core, enlarged slot is opened on the side of inserting slot, stator coil is placed on inserting slot
Interior, side spacers are filled between stator coil and stator core, and corrugated plating is squeezed into enlarged slot.
Further, above-mentioned side spacers include the first pad and the second pad, and first pad is arranged on expansion
Between groove and enlarged slot or between enlarged slot and end, second pad is arranged on the position of enlarged slot.
Further, quantity, size, position and the enlarged slot of above-mentioned second pad are adapted.
Further, above-mentioned enlarged slot is distributed in the cell body axial direction of inserting slot, and enlarged slot is for non-uniform Distribution or
Even distribution.
Further, above-mentioned enlarged slot is located in punching, between alternate punching or in adjacent punching.
Further, above-mentioned enlarged slot flute length c is the integral multiple of separately punching distance.
Further, the groove width of each vat is equal.
Further, enlarged slot groove width b is 1.05-1.1 times of inserting slot cell body groove width a.
The invention also discloses implementation method is fixed in a kind of large-capacity air-cooled generator unit stator groove, its step is as follows：Step
Rapid one, enlarged slot is opened in stator core inserting slot, after stator coil is offline, technique wedge is squeezed into expanding groove location, will
Coil position wedge just and wedge to inserting slot opposite side；Step 2: the first pad is filled in gap between enlarged slot, then
Extract technique wedge；Step 3: squeeze into corrugated plating and the second pad expanding groove location.
Further, above-mentioned side spacers are elastomeric pad.
Further, the material of above-mentioned side spacers is epoxy resin.
Technical scheme more than, the present invention have following beneficial effect：Consolidate making stator coil in groove
While fixed firm, the heat transfer also between iron core is good, and stator coil can also in iron core axial thermal expansion.
Brief description of the drawings
In order to illustrate the technical solution of the embodiments of the present invention more clearly, below by embodiment it is required use it is attached
Figure is briefly described, it will be appreciated that the following drawings illustrate only certain embodiments of the present invention, therefore be not construed as pair
The restriction of scope, for those of ordinary skill in the art, on the premise of not paying creative work, can also be according to this
A little accompanying drawings obtain other related accompanying drawings.
Fig. 1 is the structural representation of the stator slot inner fixing device of the present invention.Wherein 101 be iron core on open inserting slot,
102 be stator core, 103 be enlarged slot, 104 for squeeze into enlarged slot corrugated plating, 105 to be arranged on stator in inserting slot
Coil, 106 are side spacers.Side spacers are divided into two parts, when the first pad between enlarged slot and enlarged slot, first, expanding
Second pad of big groove location.First pad and the second pad form overall side spacers.
Embodiment
To make the purpose, technical scheme and advantage of the embodiment of the present invention clearer, below in conjunction with the embodiment of the present invention
Middle accompanying drawing, the technical scheme in the embodiment of the present invention is clearly and completely described, it is obvious that implementation described below
Example only part of the embodiment of the present invention, rather than whole embodiments.The sheet being generally described and illustrated herein in the accompanying drawings
The component of inventive embodiments can be arranged and designed with a variety of configurations, for example the side spacers in the present invention can be
One or two, can be arranged on the side of inserting slot, can also be separately positioned on the both sides of inserting slot.Enlarged slot can be
One, two, even more than etc.Therefore, below to the detailed description of the embodiments of the invention provided in the accompanying drawings
The scope of claimed invention is not intended to limit, but is merely representative of the selected embodiment of the present invention.Based on the present invention
Embodiment, the every other embodiment that those skilled in the art are obtained on the premise of creative work is not made, all
Belong to the scope of protection of the invention.
Specific one of embodiment
Inserting slot is opened on stator core, for placing stator coil.Enlarged slot is opened in stator core inserting slot, expands groove location
Groove width be more than inserting slot groove width, after stator coil is offline, expand groove location squeeze into technique wedge, by coil position wedge
Just and wedge is to the opposite side of inserting slot, while fills in the first pad between coil and inserting slot to fill out tight enlarged slot and enlarged slot
Between gap, then extract technique wedge, finally expand groove location squeeze into corrugated plating and pad.Coil is indirectly with iron core
Touch close and gap and all clog Upper gasket, the heat transfer between such coil and iron core is preferable.Pass through between iron core and coil
Pad stoppers to be examined with corrugated plating compression mode fix tightly so that coil in the axial direction can also free wxpansion.
Its fixing device specifically includes stator core, stator coil, side spacers and corrugated plating；Opened on the stator core
Inserting slot, open enlarged slot on the side of inserting slot, stator coil is placed in inserting slot, side spacers fill in stator coil with it is fixed
Between sub- iron core, corrugated plating is squeezed into enlarged slot.By corrugated plating and side spacers fixed stator coils and stator core, simultaneously
Side spacers have certain elasticity and again not wedging stator coil so that stator coil can have certain on radial and axial
Thermal expansion.Side spacers possess elasticity so that are in close contact, possess therebetween good between stator coil and stator core
Heat-conductive characteristic.
Another embodiment
On the basis of above-described embodiment, enlarged slot is distributed in the cell body axial direction of inserting slot, and its quantity and size can be according to hairs
Motor stator specification and fixed requirement determine that enlarged slot can be non-uniform Distribution, or be uniformly distributed.Enlarged slot is located at
On cell body homonymy, or any side wall of cell body.
The enlarged slot can be located in punching, can also be located between alternate punching in adjacent punching.
Enlarged slot flute length c is the integral multiple of separately punching distance, such as 1 times, 2 times so that beneficial to utilization monolithic or adjacent more
Piece punching is processed, and enlarged slot flute length c is equal with separately punching spacing in the present embodiment, reduces the difficult processing of enlarged slot
Degree, improve processing and assembly precision.
The groove width of each enlarged slot vertically in the present embodiment（Enlarged slot groove width b）It is equal, to facilitate the design of pad.
In order to ensure crystallized ability of the enlarged slot to coil, while the space availability ratio of stator core is improved, in the present invention
Enlarged slot groove width b is 1.05-1.1 times of cell body groove width a.
Another embodiment
The invention also discloses implementation method is fixed in large-capacity air-cooled generator unit stator groove, its step is as follows：Step 1: fixed
Enlarged slot is opened in sub- iron core inserting slot, after stator coil is offline, technique wedge is squeezed into expanding groove location, by coil position wedge
Just and wedge to inserting slot opposite side；Step 2: filling in the first pad in gap between enlarged slot, it is oblique then to extract technique
Wedge；Step 3: squeeze into corrugated plating and the second pad expanding groove location.The above method to contact between coil and iron core closely
And pad has all been clogged in gap, the heat transfer between such coil and iron core is preferable.Technique wedge is extracted, only with pad
Stopper, both to contact between coil and iron core closely, and not exclusively fix stator coil so that stator in the axial direction
Coil can also free wxpansion.And event is directly fixed according to technique wedge, wedge can cause stator coil when squeezing into
Elastic deformation occurs for surface, after multiple technique wedges are fixed, and then make it that stator coil in the axial direction can not free wxpansion.
Technique wedge also not completely attaching between coil and iron core simultaneously, and the heat transfer between such coil and iron core is bad,
Large-capacity air-cooled generator can not be applied to.Using the solution of the present invention, technique wedge only is used when assembling, then
Extract, just there is no technique wedge so between stator coil and stator core, on the one hand avoid technique wedge for stator line
The excessively compression of circle causes stator coil surfaces deformation, excessively compress cause in the axial direction can not free wxpansion, in addition one
Aspect technique wedge is between stator coil and stator core so that can not be in close contact between both, cause heat transfer
It is bad.And the generator of Large Copacity, need preferable heat-conductive characteristic, while stator line again between stator coil and stator core
Circle can also have certain thermal expansion in the axial direction.Then solve the two simultaneously well using side spacers in the present invention
Problem.
Another embodiment
On the basis of above-mentioned all embodiments, the material of pad is flexible epoxy resin.
It is apparent to those skilled in the art that for convenience and simplicity of description, the device of foregoing description
With the specific work process of method, the corresponding process in preceding method embodiment is may be referred to, will not be repeated here.
Finally it should be noted that：Embodiment described above, it is only the embodiment of the present invention, to illustrate the present invention
Technical scheme, rather than its limitations, protection scope of the present invention is not limited thereto, although with reference to the foregoing embodiments to this hair
It is bright to be described in detail, it will be understood by those within the art that：Any one skilled in the art
The invention discloses technical scope in, it can still modify to the technical scheme described in previous embodiment or can be light
Change is readily conceivable that, or equivalent substitution is carried out to which part technical characteristic；And these modifications, change or replacement, do not make
The essence of appropriate technical solution departs from the spirit and scope of technical scheme of the embodiment of the present invention.The protection in the present invention should all be covered
Within the scope of.Therefore, protection scope of the present invention described should be defined by scope of the claims.
Claims (9)
1. a kind of large-capacity air-cooled generator unit stator groove inner fixing device, it is characterised in that specifically include stator core, stator line
Circle, side spacers and corrugated plating；Inserting slot is opened on the stator core, enlarged slot is opened on the side of inserting slot, stator coil is put
Put in inserting slot, side spacers are filled between stator coil and stator core, and corrugated plating is squeezed into enlarged slot.
2. large-capacity air-cooled generator unit stator groove inner fixing device as claimed in claim 1, it is characterised in that the side pad
Piece includes the first pad and the second pad, and first pad is arranged between enlarged slot and enlarged slot or enlarged slot and end
Between portion, second pad is arranged on the position of enlarged slot.
3. large-capacity air-cooled generator unit stator groove inner fixing device as claimed in claim 2, it is characterised in that second pad
Quantity, size, position and the enlarged slot of piece are adapted.
4. large-capacity air-cooled generator unit stator groove inner fixing device as claimed in claim 1, it is characterised in that the enlarged slot
The cell body axial direction of inserting slot is distributed in, enlarged slot is non-uniform Distribution or is uniformly distributed.
5. large-capacity air-cooled generator unit stator groove inner fixing device as claimed in claim 1, it is characterised in that the side pad
Piece is elastomeric pad.
6. large-capacity air-cooled generator unit stator groove inner fixing device as claimed in claim 1, it is characterised in that the side pad
The material of piece is epoxy resin.
7. fixing implementation method in a kind of large-capacity air-cooled generator unit stator groove, its step is as follows：Step 1: under stator core
Enlarged slot is opened in wire casing, after stator coil is offline, technique wedge is squeezed into expanding groove location, just simultaneously wedge arrives by coil position wedge
The opposite side of inserting slot；Step 2: filling in the first pad in gap between enlarged slot, technique wedge is then extracted；Step
3rd, corrugated plating and the second pad are squeezed into expansion groove location.
8. fix implementation method in large-capacity air-cooled generator unit stator groove as claimed in claim 5, it is characterised in that the side
Face pad is elastomeric pad.
9. fix implementation method in large-capacity air-cooled generator unit stator groove as claimed in claim 5, it is characterised in that the side
The material of face pad is epoxy resin.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610467700.0A CN107546896B (en) | 2016-06-24 | 2016-06-24 | Large-capacity air-cooled generator unit stator slot inner fixing device and its implementation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610467700.0A CN107546896B (en) | 2016-06-24 | 2016-06-24 | Large-capacity air-cooled generator unit stator slot inner fixing device and its implementation |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107546896A true CN107546896A (en) | 2018-01-05 |
| CN107546896B CN107546896B (en) | 2019-08-23 |
Family
ID=60960866
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610467700.0A Active CN107546896B (en) | 2016-06-24 | 2016-06-24 | Large-capacity air-cooled generator unit stator slot inner fixing device and its implementation |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS589539A (en) * | 1981-07-07 | 1983-01-19 | Toshiba Corp | Fixing method for stator coil |
| DE19521669A1 (en) * | 1994-06-22 | 1996-01-04 | Valeo Equip Electr Moteur | Insertion of winding conductors into motor rotor core |
| JPH08182277A (en) * | 1994-09-30 | 1996-07-12 | Aisin Seiki Co Ltd | Switched reluctance motor |
| JPH1094205A (en) * | 1996-09-13 | 1998-04-10 | Toshiba Corp | Rotating electric machine |
| CN205004846U (en) * | 2015-08-26 | 2016-01-27 | 东方电气集团东方电机有限公司 | Generator stator groove structure, coil fixed structure and generator thereof |
-
2016
- 2016-06-24 CN CN201610467700.0A patent/CN107546896B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS589539A (en) * | 1981-07-07 | 1983-01-19 | Toshiba Corp | Fixing method for stator coil |
| DE19521669A1 (en) * | 1994-06-22 | 1996-01-04 | Valeo Equip Electr Moteur | Insertion of winding conductors into motor rotor core |
| JPH08182277A (en) * | 1994-09-30 | 1996-07-12 | Aisin Seiki Co Ltd | Switched reluctance motor |
| JPH1094205A (en) * | 1996-09-13 | 1998-04-10 | Toshiba Corp | Rotating electric machine |
| CN205004846U (en) * | 2015-08-26 | 2016-01-27 | 东方电气集团东方电机有限公司 | Generator stator groove structure, coil fixed structure and generator thereof |
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| Publication number | Publication date |
|---|---|
| CN107546896B (en) | 2019-08-23 |
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