CN101282065B - Method for installing generator rotor guard ring block type insulation barrel - Google Patents
Method for installing generator rotor guard ring block type insulation barrel Download PDFInfo
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- CN101282065B CN101282065B CN2008100377017A CN200810037701A CN101282065B CN 101282065 B CN101282065 B CN 101282065B CN 2008100377017 A CN2008100377017 A CN 2008100377017A CN 200810037701 A CN200810037701 A CN 200810037701A CN 101282065 B CN101282065 B CN 101282065B
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- retaining ring
- rotor winding
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- dds
- ring
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Abstract
The invention relates to a generator rotor protective ring blocked type insulating cylinder structure, comprising a generator rotor insulating ring, a high strenghth epoxy glass cloth plate, a DDS plate compound four fluorine muslin delaine and an ebonite pin, which is characterized in that, when assembling the blocked type insulating cylinder, only the blocked type insulating cylinder is packaged on the rotor winding, the power plant is on-site exchanged without dismounting the coupling. The invention has advantages of high mechanical strength, good electric insulating performance, reliable operation while manufacturing, assembling or dismounting conveniently, can allow the coil freely telescopic and reduce the cost and the production cycle.
Description
Technical field
The present invention relates to a kind of method for installing generator rotor guard ring block type insulation barrel, belong to Coal,steam plant with FGD environmental protection and energy saving technical field.
Background technology
The insulation of generator amature retaining ring mainly plays two effects in generator operation, promptly carry and electric insulation.My company introduces the generator amature retaining ring insulation of US Westinghouse company's technology, is the integral type insulating cylinder that interior circle has the tetrafluoro glide lamella, and it not only has bearing capacity, heat resistance and electric insulation all to be superior to conventional material, and the retaining ring that is in operation insulation is not broken.Circle is smooth in the more important thing is; Coefficient of friction is very little, thereby in generator operation, particularly for starting, the frequent peak regulation unit of stopping transport; Its end winding can more freely stretch; And can not receive the obstruction of retaining ring insulating cylinder, and reduced owing to the flexible inconsistent thermal unbalance that causes of end winding, improved the reliability of unit.
But there are several problems in integral type retaining ring insulating cylinder:
The insulating cylinder processing and manufacturing is complicated, need be wrapped on the core rod during insulating cylinder coiling, still needs processing excircles and seam on core rod after transporting to my company, so core rod will transportation back and forth between insulating cylinder manufactory and my company, very easily causes to produce to disconnect, and influences the cycle.And integral type retaining ring insulating cylinder, cover is bad easily when the cover retaining ring.
In addition, when power plant's site examining and repairing is dismantled retaining ring, then need change integral type retaining ring insulating cylinder; Vapour end insulating cylinder particularly; Because of receiving vapour end shaft coupling size impact, can't under the situation of not tearing shaft coupling open, retaining ring be deviate from rotor and change insulating cylinder, maintenance has been brought very big difficulty.
Summary of the invention
The purpose of this invention is to provide a kind of transportation, overhaul method for installing generator rotor guard ring block type insulation barrel easily.
For realizing above purpose; Technical scheme of the present invention provides a kind of method for installing generator rotor guard ring block type insulation barrel; It is characterized in that; Employing forms insulating cylinder along at least two retaining ring piecemeals that the circumferencial direction of rotor winding distributes through the outside that the bakelite pin is installed in the rotor winding, described retaining ring piecemeal by retaining ring, high-strength epoxy glass-cloth board, the multiple tetrafluoro cotton of DDS plate, promptly press close under one deck, bakelite pin, dead ring and the wedge at copper cash place filler strip and form, its method is:
The first step. the multiple tetrafluoro cotton of DDS plate is wrapped in the part of rotor winding outside; The high-strength epoxy glass-cloth board is wrapped in the multiple tetrafluoro cotton of DDS plate outside;
Second step. the multiple tetrafluoro cotton of high-strength epoxy glass-cloth board and DDS plate is fixed on the cushion block of end with the bakelite pin along an end of the axial direction of rotor winding,, under dead ring, and is enclosed within the wedge outside the filler strip along another end plug of the axial direction of rotor winding;
The 3rd step. last retaining ring hot jacket forms the retaining ring piecemeal at high-strength epoxy glass-cloth board and dead ring outside, and the retaining ring piecemeal is formed the insulation against ground of generator amature, behind high-voltage holding test, guarantees the safe operation of generator;
The 4th step. wrap up other parts of rotor winding outside again by 1,2,3 steps, up to having wrapped up.
The present invention adopts inside and outside the insulating cylinder several layers, the wholecircle splicing, and intersection stacks; Leave piece, the piece position is in rotor body canine tooth part, and every layer thickness is suitable; The multiple tetrafluoro face cloth glide lamella of innermost layer notch place creepage distance in order to increase, and stairstepping is processed at the notch place and the retaining ring dead ring matches going out filler strip under the wedge; Along the circumferential direction string is moving in order to avoid the sectional type insulating cylinder to be in operation, and on the cushion block of the end of the axial outermost end of coil, beats dielectric pin, only needs during the assembling of sectional type insulating cylinder it is wrapped on the rotor winding; Power plant need not to tear open shaft coupling during field replacement, highlights its good manufacturability.
Advantage of the present invention is in easily manufactured, assembles easyly, reliable, greatly facilitates the manufacturing and the maintenance of generator amature, has reduced cost, has reduced the production cycle.
Description of drawings
Fig. 1 is a kind of method for installing generator rotor guard ring block type insulation barrel sketch map;
Fig. 2 is the generalized section after a kind of generator rotor guard ring block type insulation barrel installs.
Embodiment
Below in conjunction with accompanying drawing and embodiment the present invention is described further.
Embodiment
As shown in Figure 1; Be a kind of method for installing generator rotor guard ring block type insulation barrel sketch map; Described a kind of method for installing generator rotor guard ring block type insulation barrel; Employing forms insulating cylinder along at least two retaining ring piecemeals 9 of the circumferencial direction distribution of rotor winding 6 through the outside that bakelite pin 4 is installed in rotor winding 6; Described retaining ring piecemeal 9 by the multiple tetrafluoro cotton of retaining ring 1, high-strength epoxy glass-cloth board 2, DDS plate, promptly press close to the copper cash place one deck 3, bakelite pin 4, end cushion block,, filler strip 8 is formed under dead ring 7 and the wedge, its installation method is:
The multiple tetrafluoro cotton 3 of DDS plate is wrapped in outside half the of rotor winding 6; High-strength epoxy glass-cloth board 2 is wrapped in multiple tetrafluoro cotton 3 outsides of DDS plate; High-strength epoxy glass-cloth board 2 is fixed on the end cushion block 5 with bakelite pin 4 with the end of the multiple tetrafluoro cotton 3 of DDS plate along the axial direction of rotor winding 6, dead ring 7 times, and is enclosed within filler strip 8 outsides under the wedge along another end plug of the axial direction of rotor winding 6; Last retaining ring hot jacket is in high-strength epoxy glass-cloth board 2 and dead ring 7 outsides; Wrap up second half of rotor winding 6 outsides again by the step of front, up to having wrapped up, as shown in Figure 2; Be the generalized section of a kind of generator rotor guard ring block type insulation barrel after installing; Two retaining ring piecemeals 9 are formed the insulation against ground of generator amature each other with encircling, behind high-voltage holding test, guarantee the safe operation of generator.
Claims (1)
1. method for installing generator rotor guard ring block type insulation barrel; It is characterized in that; Employing forms insulating cylinder along at least two retaining ring piecemeals (9) of the circumferencial direction distribution of rotor winding (6) through the outside that bakelite pin (4) is installed in rotor winding (6); Described retaining ring piecemeal (9) by the multiple tetrafluoro cotton of retaining ring (1), high-strength epoxy glass-cloth board (2), DDS plate, promptly press close under one deck (3), bakelite pin (4), dead ring (7) and the wedge at copper cash place filler strip (8) and form, its method is:
The first step. the multiple tetrafluoro cotton (3) of DDS plate is wrapped in the part of rotor winding (6) outside; High-strength epoxy glass-cloth board (2) is wrapped in the multiple tetrafluoro cotton (3) of DDS plate outside;
Second step. the multiple tetrafluoro cotton (3) of high-strength epoxy glass-cloth board (2) and DDS plate is fixed on the end cushion block (5) with bakelite pin (4) along an end of the axial direction of rotor winding (6); Under dead ring (7), and be enclosed within filler strip under the wedge (8) outside along another end plug of the axial direction of rotor winding (6);
The 3rd step. last retaining ring (1) hot jacket forms retaining ring piecemeal (9) at high-strength epoxy glass-cloth board (2) and dead ring (7) outside, and retaining ring piecemeal (9) is formed the insulation against ground of generator amature, behind high-voltage holding test, guarantees the safe operation of generator;
The 4th step. wrap up other parts of rotor winding (6) outside again by 1,2,3 steps, up to having wrapped up.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008100377017A CN101282065B (en) | 2008-05-20 | 2008-05-20 | Method for installing generator rotor guard ring block type insulation barrel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008100377017A CN101282065B (en) | 2008-05-20 | 2008-05-20 | Method for installing generator rotor guard ring block type insulation barrel |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101282065A CN101282065A (en) | 2008-10-08 |
| CN101282065B true CN101282065B (en) | 2012-01-25 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2008100377017A Active CN101282065B (en) | 2008-05-20 | 2008-05-20 | Method for installing generator rotor guard ring block type insulation barrel |
Country Status (1)
| Country | Link |
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| CN (1) | CN101282065B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2645538B1 (en) * | 2012-03-26 | 2014-11-12 | Alstom Technology Ltd | Rotor for an electric machine |
| CN103337925B (en) * | 2013-07-18 | 2015-09-02 | 湘潭电机股份有限公司 | A kind of rotor coil ends insulation system and motor |
| CN103580348B (en) * | 2013-11-12 | 2016-04-13 | 中电电机股份有限公司 | Rotor of steam turbo generator end coil combined pad supporting construction |
| CN114421722B (en) * | 2022-01-24 | 2023-05-26 | 东方电气集团东方电机有限公司 | Rotor coil end forming tool machining and manufacturing process |
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2008
- 2008-05-20 CN CN2008100377017A patent/CN101282065B/en active Active
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| Publication number | Publication date |
|---|---|
| CN101282065A (en) | 2008-10-08 |
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