CN107546896B - Large-capacity air-cooled generator unit stator slot inner fixing device and its implementation - Google Patents
Large-capacity air-cooled generator unit stator slot inner fixing device and its implementation Download PDFInfo
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- CN107546896B CN107546896B CN201610467700.0A CN201610467700A CN107546896B CN 107546896 B CN107546896 B CN 107546896B CN 201610467700 A CN201610467700 A CN 201610467700A CN 107546896 B CN107546896 B CN 107546896B
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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 slot inner fixing devices, specifically include 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, and 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 slot: Step 1: open enlarged slot in stator core inserting slot, after stator coil is offline, squeezing into technique inclined wedge expanding groove location, just and wedge is to the other side of inserting slot by coil position wedge；Step 2: filling in the first gasket in gap between enlarged slot, technique inclined wedge is then extracted；Step 3: squeezing into corrugated plating and the second gasket expanding groove location.While keeping stator coil fixed in slot, 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 slot inner fixing device and its
Implementation method.
Background technique
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 considers its free extension.Such scheme can not be suitable for the air cooled generator of large capacity.
Summary of the invention
It is asked for the technology for the air cooled generator that stator coil fixed solution in the prior art can not be suitable for large capacity
Topic, the invention discloses a kind of large-capacity air-cooled generator unit stator slot inner fixing device and its implementation.
Specific implementation of the invention is as follows:
A kind of large-capacity air-cooled generator unit stator slot inner fixing device, specifically includes stator core, stator coil, side
Gasket and corrugated plating；Inserting slot is opened on the stator core, enlarged slot is opened on the side of inserting slot, and stator coil is placed on offline
In slot, 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 gasket and the second gasket, and the first gasket setting is expanding
Between slot and enlarged slot or between enlarged slot and end, the position of enlarged slot is arranged in second gasket.
Further, the quantity, size of above-mentioned second gasket, position and enlarged slot are adapted.
Further, above-mentioned enlarged slot is distributed in the groove 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 large trough is equal.
Further, enlarged slot groove width b is 1.05-1.1 times of inserting slot groove body groove width a.
The invention also discloses implementation method is fixed in a kind of large-capacity air-cooled generator unit stator slot, its step are as follows: step
Rapid one, enlarged slot is opened in stator core inserting slot, after stator coil is offline, squeezes into technique inclined wedge expanding groove location, it will
Coil position wedge is just and wedge is to the other side of inserting slot；Step 2: filling in the first gasket in gap between enlarged slot, then
Extract technique inclined wedge；Step 3: squeezing into corrugated plating and the second gasket expanding groove location.
Further, above-mentioned side spacers are elastomeric pad.
Further, the material of above-mentioned side spacers is epoxy resin.
By using above technical solution, the present invention has the following beneficial effects: keeping stator coil solid in slot
While fixed firm, the heat transfer also between iron core is good, and stator coil can also in iron core axial thermal expansion.
Detailed description of the invention
In order to illustrate the technical solution of the embodiments of the present invention more clearly, below will be to needed in the embodiment attached
Figure is briefly described, it should be understood that the following drawings illustrates only certain embodiments of the present invention, therefore is not construed as pair
The restriction of range for those of ordinary skill in the art without creative efforts, can also be according to this
A little attached drawings obtain other relevant attached drawings.
Fig. 1 is the structural schematic diagram of stator slot inner fixing device of the invention.Wherein 101 for open on iron core inserting slot,
102 it is stator core, 103 be enlarged slot, 104 be the corrugated plating squeezed into enlarged slot, 105 is the stator being arranged in inserting slot
Coil, 106 are side spacers.Side spacers are divided into two parts, first is that the first gasket between enlarged slot and enlarged slot, first is that expanding
Second gasket of big groove location.First gasket and the second gasket form whole side spacers.
Specific embodiment
In order to make the object, technical scheme and advantages of the embodiment of the invention clearer, below in conjunction with the embodiment of the present invention
Middle attached drawing, technical scheme in the embodiment of the invention is clearly and completely described, it is obvious that implementation described below
Example is only a part of the embodiment of the present invention, instead of all the embodiments.The sheet being usually described and illustrated herein in the accompanying drawings
The component of inventive embodiments can be arranged and be designed with a variety of different configurations, for example the side spacers in the present invention can be
One or two, can be set in the side of inserting slot, can also be separately positioned on the two sides of inserting slot.Enlarged slot can be
One, two, even more than etc..Therefore, the detailed description to the embodiment of the present invention provided in the accompanying drawings below
It is not intended to limit the range of claimed invention, but is merely representative of selected embodiment of the invention.Based on the present invention
Embodiment, those skilled in the art's every other embodiment obtained without making creative work, 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, enlarged slot are opened in stator core inserting slot
The groove width of position is greater than the groove width of inserting slot, after stator coil is offline, technique inclined wedge is squeezed into expanding groove location, by coil position
It sets wedge just and wedge is to the other side of inserting slot, while filling in the first gasket between coil and inserting slot to fill out tight enlarged slot and expand
Then technique inclined wedge is extracted in gap between large trough, finally squeeze into corrugated plating and gasket in expansion groove location.Coil and iron core it
Between contact close and gap and all clog Upper gasket, the heat transfer between such coil and iron core is preferable.Between iron core and coil
It is stoppered gasket and is examined with fix tightly by way of corrugated plating compression, so that coil in the axial direction can also free wxpansion.
It is fixed device and specifically includes stator core, stator coil, side spacers and corrugated plating；It is opened on the stator core
Inserting slot opens enlarged slot on the side of inserting slot, and stator coil is placed in inserting slot, and side spacers fill in stator coil and 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 on radial and axial it is certain
Thermal expansion.Side spacers have elasticity, so that being in close contact between stator coil and stator core, have therebetween good
Heat-conductive characteristic.
Another embodiment
On the basis of the above embodiments, enlarged slot is distributed in the groove body axial direction of inserting slot, and quantity and size can roots
Determine that enlarged slot can be non-uniform Distribution, or be uniformly distributed according to generator unit stator specification and fixed requirement.Enlarged slot
Positioned at groove body is ipsilateral or any side wall of groove body on.
The enlarged slot can be located in punching, can also be located in adjacent punching between alternate punching.
Enlarged slot flute length c is the integral multiple of separately punching distance, such as 1 times, 2 times, so that being conducive to utilize 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 improves processing and assembly precision.
(enlarged slot groove width b) is equal, to facilitate the design of gasket for the groove width of each enlarged slot vertically in the present embodiment.
In order to guarantee that enlarged slot to the crystallized ability of coil, while improving the space utilization rate of stator core, in the present invention
Enlarged slot groove width b is 1.05-1.1 times of groove body groove width a.
Another embodiment
The invention also discloses implementation method is fixed in large-capacity air-cooled generator unit stator slot, its step are as follows: Step 1:
Enlarged slot is opened in stator core inserting slot, after stator coil is offline, technique inclined wedge is squeezed into expanding groove location, by coil position
It sets wedge just and wedge is to the other side of inserting slot；Step 2: filling in the first gasket in gap between enlarged slot, work is then extracted
Skill inclined wedge；Step 3: squeezing into corrugated plating and the second gasket expanding groove location.The above method to contact between coil and iron core
Close and gap all clogs and has gone up gasket, and the heat transfer between such coil and iron core is preferable.Technique inclined wedge is extracted, only with
Gasket stoppers, and not only to contact between coil and iron core closely, but also not exclusively fix stator coil, so that in the axial direction
Stator coil can also free wxpansion.And event is directly fixed according to technique inclined wedge, inclined wedge can make stator line when squeezing into
Elastic deformation occurs for the surface of circle, after multiple technique inclined wedges are fixed, so that stator coil in the axial direction can not be free
Expansion.Technique inclined wedge also not completely attaching between coil and iron core simultaneously, the heat transfer between such coil and iron core
It is bad, large-capacity air-cooled generator can not be suitable for.Using the solution of the present invention, technique inclined wedge only is used when assembly,
Then just extract, just there is no technique inclined wedge in this way between stator coil and stator core, on the one hand avoid technique inclined wedge for
The excessively compression of stator coil leads to stator coil surfaces deformation, excessively compress so that in the axial direction can not free wxpansion,
Still further aspect technique inclined wedge, so that cannot be in close contact between both, causes between stator coil and stator core
Heat transfer is bad.And the generator of large capacity, preferable heat-conductive characteristic is needed again between stator coil and stator core, simultaneously
Stator coil can also have certain thermal expansion in the axial direction.It is then solved simultaneously well in the present invention using side spacers
Both of these problems.
Another embodiment
On the basis of above-mentioned all embodiments, the material of gasket 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
It with the specific work process of method, can refer to corresponding processes in the foregoing method embodiment, details are not described herein.
Finally, it should be noted that embodiment described above, only a specific embodiment of the invention, to illustrate the present invention
Technical solution, rather than its limitations, scope of protection 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, those skilled in the art should understand that: anyone skilled in the art
In the technical scope disclosed by the present invention, it can still modify to technical solution documented by previous embodiment or can be light
It is readily conceivable that variation or equivalent replacement of some of the technical features；And these modifications, variation or replacement, do not make
The essence of corresponding technical solution is detached from the spirit and scope of technical solution of the embodiment of the present invention.Should all it cover in protection of the invention
Within the scope of.Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (8)
1. a kind of large-capacity air-cooled generator unit stator slot 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, and stator coil is put
It sets in inserting slot, side spacers are filled between stator coil and stator core, and corrugated plating is squeezed into enlarged slot；The side pad
Piece includes the first gasket and the second gasket, and first gasket is arranged between enlarged slot and enlarged slot or enlarged slot and end
Between portion, the position of enlarged slot is arranged in second gasket.
2. large-capacity air-cooled generator unit stator slot inner fixing device as described in claim 1, it is characterised in that second pad
Quantity, size, position and the enlarged slot of piece are adapted.
3. large-capacity air-cooled generator unit stator slot inner fixing device as described in claim 1, it is characterised in that the enlarged slot
The groove body for being distributed in inserting slot is axial, and enlarged slot is non-uniform Distribution or is uniformly distributed.
4. large-capacity air-cooled generator unit stator slot inner fixing device as described in claim 1, it is characterised in that the side pad
Piece is elastomeric pad.
5. large-capacity air-cooled generator unit stator slot inner fixing device as described in claim 1, it is characterised in that the side pad
The material of piece is epoxy resin.
6. fixing implementation method in a kind of large-capacity air-cooled generator unit stator slot, its step are as follows: Step 1: under stator core
Enlarged slot is opened on the side of wire casing, after stator coil is offline, squeezes into technique inclined wedge expanding groove location, just by coil position wedge
And wedge is to the other side of inserting slot；Step 2: filling in the first gasket in gap between enlarged slot, it is oblique then to extract technique
Wedge；Step 3: squeezing into corrugated plating and the second gasket expanding groove location.
7. fixing implementation method in large-capacity air-cooled generator unit stator slot as claimed in claim 6, it is characterised in that described the
One gasket and the second gasket are elastomeric pad.
8. fixing implementation method in large-capacity air-cooled generator unit stator slot as claimed in claim 6, it is characterised in that described the
The material of one gasket and the second gasket 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 CN107546896A (en) | 2018-01-05 |
| CN107546896B true CN107546896B (en) | 2019-08-23 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| 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 |
|---|---|
| CN107546896A (en) | 2018-01-05 |
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