CN109768676A - Rotor magnetic pole shroud loosens processing method - Google Patents
Rotor magnetic pole shroud loosens processing method Download PDFInfo
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- CN109768676A CN109768676A CN201910203438.2A CN201910203438A CN109768676A CN 109768676 A CN109768676 A CN 109768676A CN 201910203438 A CN201910203438 A CN 201910203438A CN 109768676 A CN109768676 A CN 109768676A
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- magnetic pole
- shroud
- pad
- felt
- rotor
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Abstract
The present invention relates to power station pump-storage generators to repair field, i.e., rotor magnetic pole shroud loosens processing method.Its step are as follows: (1) hanging out magnetic pole and be placed on T tail on sleeper upwards, remove supporting screw, make an overall screening magnetic pole surfaces.(2) the iron pressing plate of shroud supports insulative backing plate and the welding of magnetic pole back pressing plate are cut open, removes bracer, felt pad.(3) pad is at insulating pad and coil after being sufficiently impregnated 3mm thick polyester felt with epoxy glue HDJ-102.(4) epoxy insulation backing plate with groove is fixed outside the terylene felt of dipping epoxy glue.(5) magnetic pole shroud compresses.It using this method, ensure that unit is continuously safely operated, carry out special examined and test for rotor insulation situation in each maintenance, it is no abnormal.The rotor magnetic pole shroud fastening tool of production, and reinforce follow-up of quality analysis and research successively at work, this tool greatly improves magnetic pole repair quality and technique.
Description
Technical field
The present invention relates to power station pump-storage generators to repair field, i.e., rotor magnetic pole shroud loosens processing method.
Background technique
In the prior art, pumped storage machine rotor electrical structure is mainly main at 1, current collection by following sections
Ring, brush holder and carbon brush part.2, the big line part of excitation in rotor neutral body.3, pole parts.Field structure is mainly also divided into line
Circle and iron core two large divisions.Coil: being overrided to form using copper bar, and each layer has good insulation, the circle that structure is square.
The head and tail of coil stretches out 100 millimeters of coil, is connector between magnetic pole.Iron core: it is formed using 10 millimeters of silicon steel plate stacking
An entirety, silicon steel sheet is coated with insulated paint, be in order to prevent after silicon steel plate stacking between have the generation of vortex, coil and iron core
After assembly, iron core is separated with coil when there is the band (also known as shroud) fastened between the two together, mainly fearness magnetic pole handling in centre.
It is raised a part that magnetic pole shroud, which is mounted on magnetic pole, can accumulate dust, therefore most rotor ground faults all occur in shroud
Place.
Magnetic pole shroud loosens Producing reason and harm: pump-storage generator is due to revolving speed height, and change working is frequent, because
This rotor not only needs to bear huge centrifugal force in structure, it is also necessary to the shaking force generated during change working is born,
Just to rotor packaging technology, more stringent requirements are proposed for this.But it is influenced by various aspects condition, technique when resulting in units' installation
Some defects can have been left by preparing with structure.And some defects will not be exposed in unit initial operating stage, but with unit
The lengthening of runing time, problem can gradually be exposed.
Magnetic pole shroud loosens Producing reason and harm: insulating press boards directly resulted in when magnetic pole shroud loosens to be loosened, it can
Lead to adverse consequences.One side insulating press boards and coil generate rigid friction and vibration, intercoil insulation can be made to be seriously worn, absolutely
Coil turn-to-turn short circuit will be caused when edge intensity deficiency.On the other hand when insulating pad loosens, brush carbon dust and dust greasy dirt will
Into magnetic pole internal interstices, cause to climb electricity, ground fault can be caused.
Summary of the invention
The purpose of the present invention is provide a kind of safe and reliable rotor magnetic pole shroud loosening processing side in view of the above deficiencies
Method.
The technical solution of the invention is as follows: rotor magnetic pole shroud loosens processing method, and feature is steps are as follows:
(1) it hangs out magnetic pole and is placed on T tail on sleeper upwards, remove supporting screw, make an overall screening magnetic pole surfaces.
(2) the iron pressing plate of shroud supports insulative backing plate and the welding of magnetic pole back pressing plate are cut open, removes bracer, insulation
Pad.
(3) pad is at insulating pad and coil after being sufficiently impregnated 3mm thick polyester felt with epoxy glue HDJ-102.
(4) epoxy insulation backing plate with groove is fixed outside the terylene felt of dipping epoxy glue.
(5) magnetic pole shroud compresses.
Magnetic pole shroud construction: magnetic pole shroud is insulating materials close to coil sides, plays damping, insulation, sealing function, intermediate
For epoxy insulation backing plate with groove, fixed insulating materials.Outermost is that the shell feed plate of magnetic pole back iron pressing plate welding is constituted.
The invention has the advantages that 1, using this method, ensure that unit is continuously safely operated, in each maintenance for turn
Insulating sublayer situation carries out special examined and test, no abnormal.2, the rotor magnetic pole shroud fastening tool made, and in work
Reinforce follow-up of quality analysis and research in work successively, this tool greatly improves magnetic pole repair quality and technique.
Embodiments of the present invention are described in further detail below in conjunction with embodiment.
Detailed description of the invention
Fig. 1 is magnetic pole shroud position view.
Specific embodiment
Referring to Fig. 1, parts title is as follows: magnetic pole 1, shroud 2.
Rotor magnetic pole shroud loosens processing method, and feature is steps are as follows:
1, it hangs out magnetic pole and is placed on T tail on sleeper upwards, remove supporting screw, make an overall screening magnetic pole surfaces.2, it cuts open
The welding of the iron pressing plate and magnetic pole back pressing plate of shroud supports insulative backing plate, removes bracer, felt pad.
3, pad is at insulating pad and coil after being sufficiently impregnated 3mm thick polyester felt with epoxy glue HDJ-102.
4, epoxy insulation backing plate with groove is fixed outside the terylene felt of dipping epoxy glue.
5, most important link before welding: magnetic pole shroud compresses.
The effect that magnetic pole shroud compresses:
A. the insulation board and terylene felt size newly replaced are relatively original big, need to generate certain deformation quantity and meet sealing and to magnetic pole
Pressing force.
B. itself deformation quantity after shroud loosens is eliminated, meets and requirement is compressed to magnetic pole.
C. it prevents from protruding due to shroud deformation quantity, causes magnetic pole that can not return dress.
The cause of magnetic pole shroud compaction tool production:
The composition of magnetic pole shroud compaction tool:
It is the gate frame being made by channel steel according to the size of magnetic pole, turns upper hole at frame both ends according to magnetic pole shroud position,
Both top nut is welded at channel steel back in the outside in hole, then screws on screw rod, reaches fastening magnetic pole shroud using two sides screw rod is screwed
Effect, architecturally both two screw rods are arranged in shell feed plate top in portion, using the weight compression shell feed plate top of compaction tool, solve
The phenomenon that fastening two sides screw rods moves up shell feed plate, meet welding requirements.
Two sides bolt is screwed with adjustable wrench, to compress magnetic pole shroud, screws square bolt with setting tool itself.
It is described above, only a specific embodiment of the invention, it is various to illustrate not content structure for the essence of the present invention
At limitation.
Claims (1)
1. rotor magnetic pole shroud loosens processing method, feature is steps are as follows:
(1) it hangs out magnetic pole and is placed on T tail on sleeper upwards, remove supporting screw, make an overall screening magnetic pole surfaces；
(2) the iron pressing plate of shroud supports insulative backing plate and the welding of magnetic pole back pressing plate are cut open, removes bracer, felt pad；
(3) pad is at insulating pad and coil after being sufficiently impregnated 3mm thick polyester felt with epoxy glue HDJ-102；
(4) epoxy insulation backing plate with groove is fixed outside the terylene felt of dipping epoxy glue；
(5) magnetic pole shroud compresses.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910203438.2A CN109768676A (en) | 2019-03-18 | 2019-03-18 | Rotor magnetic pole shroud loosens processing method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910203438.2A CN109768676A (en) | 2019-03-18 | 2019-03-18 | Rotor magnetic pole shroud loosens processing method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109768676A true CN109768676A (en) | 2019-05-17 |
Family
ID=66459235
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910203438.2A Pending CN109768676A (en) | 2019-03-18 | 2019-03-18 | Rotor magnetic pole shroud loosens processing method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109768676A (en) |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4163912A (en) * | 1977-09-23 | 1979-08-07 | General Electric Company | Electrical insulating sheet material and electric winding made therefrom |
| JPS5970160A (en) * | 1982-10-15 | 1984-04-20 | Toshiba Corp | Field pole for salient-pole rotary electric machine |
| US6137202A (en) * | 1999-04-27 | 2000-10-24 | General Electric Company | Insulated coil and coiled frame and method for making same |
| CN201307795Y (en) * | 2008-10-13 | 2009-09-09 | 广东明珠集团韶关众力发电设备有限公司 | Integral combined insulation structure of magnetic pole coil |
| CN101640456A (en) * | 2008-07-31 | 2010-02-03 | 上海电气集团上海电机厂有限公司 | Method for machining magnetic poles on AC/AC variable-frequency steel-rolling motor rotors |
| CN102306988A (en) * | 2011-09-08 | 2012-01-04 | 国电大渡河流域水电开发有限公司检修安装分公司 | Insulation restoration method for generator rotor magnetic pole |
| CN104505996A (en) * | 2014-12-08 | 2015-04-08 | 大唐陕西发电有限公司石泉水力发电厂 | Process for overhauling rotor of hydro-generator |
| CN204349629U (en) * | 2015-01-22 | 2015-05-20 | 邵阳恒远资江水电设备有限公司 | The loosing-proof device of pole coil of hydraulic generator |
| CN104716789A (en) * | 2015-03-19 | 2015-06-17 | 白山发电厂 | Power station pump storage unit rotor magnetic pole ground connection processing method |
-
2019
- 2019-03-18 CN CN201910203438.2A patent/CN109768676A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4163912A (en) * | 1977-09-23 | 1979-08-07 | General Electric Company | Electrical insulating sheet material and electric winding made therefrom |
| JPS5970160A (en) * | 1982-10-15 | 1984-04-20 | Toshiba Corp | Field pole for salient-pole rotary electric machine |
| US6137202A (en) * | 1999-04-27 | 2000-10-24 | General Electric Company | Insulated coil and coiled frame and method for making same |
| CN101640456A (en) * | 2008-07-31 | 2010-02-03 | 上海电气集团上海电机厂有限公司 | Method for machining magnetic poles on AC/AC variable-frequency steel-rolling motor rotors |
| CN201307795Y (en) * | 2008-10-13 | 2009-09-09 | 广东明珠集团韶关众力发电设备有限公司 | Integral combined insulation structure of magnetic pole coil |
| CN102306988A (en) * | 2011-09-08 | 2012-01-04 | 国电大渡河流域水电开发有限公司检修安装分公司 | Insulation restoration method for generator rotor magnetic pole |
| CN104505996A (en) * | 2014-12-08 | 2015-04-08 | 大唐陕西发电有限公司石泉水力发电厂 | Process for overhauling rotor of hydro-generator |
| CN204349629U (en) * | 2015-01-22 | 2015-05-20 | 邵阳恒远资江水电设备有限公司 | The loosing-proof device of pole coil of hydraulic generator |
| CN104716789A (en) * | 2015-03-19 | 2015-06-17 | 白山发电厂 | Power station pump storage unit rotor magnetic pole ground connection processing method |
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| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20190517 |
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| RJ01 | Rejection of invention patent application after publication |