CN104659988A - Insulation manufacturing method of turbo-generator rotor lead - Google Patents
Insulation manufacturing method of turbo-generator rotor lead Download PDFInfo
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- CN104659988A CN104659988A CN201510095262.5A CN201510095262A CN104659988A CN 104659988 A CN104659988 A CN 104659988A CN 201510095262 A CN201510095262 A CN 201510095262A CN 104659988 A CN104659988 A CN 104659988A
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Abstract
The invention discloses an insulation manufacturing method of a turbo-generator rotor lead. The insulation quality of the lead is improved through optimization of insulating materials and improvement on a binding technology and a curing technology; meanwhile, methods for setting the binding tension, the curing temperature, heating and cooling speeds, holding time and the like during insulation manufacturing of the lead are specified. According to the lead manufactured with the method, various materials can be free of air gaps and layering, a ventilating hole of the lead is not blocked, the insulation quality of the lead can be guaranteed, the lead can be insulated and reach the designed service life, and safe operation of a turbo-generator is guaranteed.
Description
Technical field: the invention belongs to turbo-generator manufacturing technology field, particularly relates to a kind of rotor of steam turbo generator lead wire insulation manufacture method.
Background technology: rotor of steam turbo generator lead-in wire is made up of copper conductor and insulating material, copper conductor is fastened by U-shaped copper groove to form, and hollow space is the ventilation hole of lead-in wire.Rotor leading wire is one of vitals of rotor of steam turbo generator, and the quality of lead wire insulation determines turbo generator safety work.But the quality of lead wire insulation is not often because the performance of insulating material itself determines, but collocation and wrapping and curing process is selected to determine by insulating material.Method is in the past adopted to manufacture lead wire insulation, easily there is air gap between insulating material, between insulating material and copper conductor, easily occur lamination, and in the fabrication process adhesive easily along in copper conductor seam inflow vents, result in blockage, the serious quality that have impact on lead wire insulation, be difficult to reach lead wire insulation design service life, and then affect the safe operation of turbo generator.
Summary of the invention: for the problems referred to above, the object of this invention is to provide the air gap between a kind of insulating material effectively can eliminating lead-in wire, between insulating material and copper conductor, solving layering and ventilation hole blockage problem, is the method for the rotor of steam turbo generator lead wire insulation manufacture that turbo generator safe operation provides safeguard.The technical scheme that the present invention takes is:
A. insulating material is selected and Wrapping technical: outside copper conductor, wrap up 1 layer of width 25mm with the wrapping method of 1/2 overlap wrapping, the polyester film adhesive tape of thickness 0.05mm, outside polyester film adhesive tape, 1 layer of width 25mm is wrapped up with the wrapping method of 1/2 overlap wrapping, the glass tape of thickness 0.18mm, outside glass tape, 7 layers of width 32mm are wrapped up with the wrapping method of 1/2 overlap wrapping, the silicone glass mica tape of thickness 0.14mm, outside silicone glass mica tape, 2 layers of width 25mm are wrapped up with the wrapping method of 1/2 overlap wrapping, the glass tape of thickness 0.25mm, when wrapping up often kind of insulating material, equipment wrapping tension force is all set to 45N, when wrapping up glass tape and silicone glass mica tape, at its outer surface brush 1 layer of adhesive after often wrapping up 1 layer, wrap up while scrape off the unnecessary adhesive of insulating surface,
B. lead wire insulation heating: after lead wire insulation material has been wrapped up, lead-in wire is put into the firing equipment heat lead insulation that warming and cooling rate can regulate, the programming rate of firing equipment is set to 25 DEG C/h, and holding temperature is set to 130 DEG C, and temperature retention time is set to 4h;
C. lead wire insulation cooling: after insulating material reaches temperature retention time, the cooling rate of firing equipment is set to 25 DEG C/h, cooling stops temperature being set to 23 DEG C, lead wire insulation is lowered the temperature in firing equipment, when wire temperature is reduced to 23 DEG C, cooling stops, and lead wire insulation manufacture completes.
Technique effect of the present invention is:
1) ventilation hole is avoided to block
Lead-in wire ventilation hole is fastened by U-shaped copper groove and forms, in the past when lead wire insulation is wrapped up, adhesive can cause blocking ventilation hole in fastening seam inflow vents, and the present invention uses polyester film adhesive tape will fasten seam and adhesive is isolated, and effectively stops in adhesive inflow vents.
2) air gap is eliminated
Wrapping up lead wire insulation in this method is carry out on the wrapping tension force equipment that can regulate, under the effect of wrapping tension force, air between insulating material, between insulating material and copper conductor is all discharged, make combining closely of air-gap-free between insulating material, between insulating material and copper conductor, effectively raise the quality of lead wire insulation.
3) dielectric layer is avoided
In lead wire insulation manufacture process, method in the past does not claim to lead-in wire warming and cooling rate, usually can cause lead wire insulation layering because of temperature jump, affect insulation quality.The firing equipment curing molding that warming and cooling rate can control put into by lead-in wire by the present invention, the feature that this equipment has temperature precise control, warming and cooling rate can regulate, in the curing process, can ensure that the bulk temperature of lead wire insulation remains consistent, avoid because of non-uniform temperature or the too fast and lamination produced of variations in temperature.
4) insulation thermal endurance is improved
Used F level mica tape when manufacturing generator amature lead-in wire in the past, the maximum temperature that can bear that insulate during generator long-time running is 155 DEG C, and the present invention adopts H level silicone glass mica tape to manufacture lead wire insulation, the maximum temperature that insulation is born is promoted to 180 DEG C, effectively improve lead wire insulation thermal endurance, the fail safe at high temperature run for generator provides safeguard.
This invention effectively solves lead wire insulation may there is ventilation hole blockage problem, lamination problem in the fabrication process, and discharge air between insulating material, between insulating material and copper conductor, realize the contact of various material air-gap-free, ensure lead wire insulation quality, make it reach design service life.The present invention has good application prospect, for the safe operation of turbo generator lays the foundation.
Accompanying drawing illustrates:
Fig. 1 is lead wire insulation structural profile schematic diagram.
Embodiment:
As shown in Figure 1, the present invention is a kind of rotor of steam turbo generator lead wire insulation manufacture method, comprises following manufacturing step:
A. insulating material is selected and Wrapping technical: outside copper conductor, wrap up 1 layer of width 25mm with the wrapping method of 1/2 overlap wrapping, the polyester film adhesive tape of thickness 0.05mm, outside polyester film adhesive tape, 1 layer of width 25mm is wrapped up with the wrapping method of 1/2 overlap wrapping, the glass tape of thickness 0.18mm, outside glass tape, 7 layers of width 32mm are wrapped up with the wrapping method of 1/2 overlap wrapping, the silicone glass mica tape of thickness 0.14mm, outside silicone glass mica tape, 2 layers of width 25mm are wrapped up with the wrapping method of 1/2 overlap wrapping, the glass tape of thickness 0.25mm, when wrapping up often kind of insulating material, equipment wrapping tension force is all set to 45N, when wrapping up glass tape and silicone glass mica tape, at its outer surface brush 1 layer of adhesive after often wrapping up 1 layer, wrap up while scrape off the unnecessary adhesive of insulating surface,
B. lead wire insulation heating: after lead wire insulation material has been wrapped up, lead-in wire is put into the firing equipment heat lead insulation that warming and cooling rate can regulate, the programming rate of firing equipment is set to 25 DEG C/h, and holding temperature is set to 130 DEG C, and temperature retention time is set to 4h;
C. lead wire insulation cooling: after insulating material reaches temperature retention time, the cooling rate of firing equipment is set to 25 DEG C/h, cooling stops temperature being set to 23 DEG C, lead wire insulation is lowered the temperature in firing equipment, when wire temperature is reduced to 23 DEG C, cooling stops, and lead wire insulation manufacture completes.
Claims (1)
1. a rotor of steam turbo generator lead wire insulation manufacture method, is characterized in that: comprise the steps:
A) insulating material is selected and Wrapping technical: with the wrapping method of 1/2 overlap wrapping at copper conductor (1) outside wrapping 1 layer of width 25mm, the polyester film adhesive tape (2) of thickness 0.05mm, with the wrapping method of 1/2 overlap wrapping at polyester film adhesive tape (2) outside wrapping 1 layer of width 25mm, the ground floor glass tape (3) of thickness 0.18mm, with the wrapping method of 1/2 overlap wrapping at ground floor glass tape (3) outside wrapping 7 layers of width 32mm, the silicone glass mica tape (4) of thickness 0.14mm, with the wrapping method of 1/2 overlap wrapping at silicone glass mica tape (4) outside wrapping 2 layers of width 25mm, the second layer glass tape (5) of thickness 0.25mm, when wrapping up often kind of insulating material, equipment wrapping tension force is all set to 45N, when wrapping up glass tape and silicone glass mica tape, at its outer surface brush 1 layer of adhesive after often wrapping up 1 layer, wrap up while scrape off the unnecessary adhesive of insulating surface,
B. lead wire insulation heating: after lead wire insulation material has been wrapped up, lead-in wire is put into the firing equipment heat lead insulation that warming and cooling rate can regulate, the programming rate of firing equipment is set to 25 DEG C/h, and holding temperature is set to 130 DEG C, and temperature retention time is set to 4h;
C. lead wire insulation cooling: after insulating material reaches temperature retention time, the cooling rate of firing equipment is set to 25 DEG C/h, cooling stops temperature being set to 23 DEG C, lead wire insulation is lowered the temperature in firing equipment, when wire temperature is reduced to 23 DEG C, cooling stops, and lead wire insulation manufacture completes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510095262.5A CN104659988B (en) | 2015-03-04 | 2015-03-04 | A kind of rotor of steam turbo generator lead wire insulation manufacture method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510095262.5A CN104659988B (en) | 2015-03-04 | 2015-03-04 | A kind of rotor of steam turbo generator lead wire insulation manufacture method |
Publications (2)
| Publication Number | Publication Date |
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| CN104659988A true CN104659988A (en) | 2015-05-27 |
| CN104659988B CN104659988B (en) | 2017-03-01 |
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| CN201510095262.5A Active CN104659988B (en) | 2015-03-04 | 2015-03-04 | A kind of rotor of steam turbo generator lead wire insulation manufacture method |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104967266A (en) * | 2015-07-06 | 2015-10-07 | 大唐桂冠合山发电有限公司 | Insulation method of transition lead wire of stator winding in steamer generator |
| CN108512378A (en) * | 2018-03-23 | 2018-09-07 | 哈尔滨电机厂有限责任公司 | A kind of Hydrogen-cooling stator of steam turbine generator parallel ring lead wire insulation manufacturing method |
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| GB2471205A (en) * | 2009-06-19 | 2010-12-22 | Muirhead Aerospace Ltd | Motor or transducer winding with diamond-like carbon (DLC) electrically insulating coatings |
| CN102158023A (en) * | 2011-05-18 | 2011-08-17 | 江苏冰城电材股份有限公司 | Method for manufacturing insulation structure of rotor coil of wind driven generator |
| CN102158022A (en) * | 2011-05-18 | 2011-08-17 | 江苏冰城电材股份有限公司 | Method for manufacturing insulating structure of 3-5MW wind power generator stator coil |
| CN102185407A (en) * | 2011-05-13 | 2011-09-14 | 东方电气（乐山）新能源设备有限公司 | Insulating structure for 2MW wind driven generator |
| CN102255448A (en) * | 2011-07-19 | 2011-11-23 | 柳州市明阳机电制造有限责任公司 | Insulation manufacturing method for wind driven generator |
| CN103797695A (en) * | 2011-09-16 | 2014-05-14 | 雷米技术有限公司 | Composite conductor insulation |
| CN103985437A (en) * | 2013-02-13 | 2014-08-13 | 日立金属株式会社 | Insulated electric wire and method of manufacturing the same |
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2015
- 2015-03-04 CN CN201510095262.5A patent/CN104659988B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2471205A (en) * | 2009-06-19 | 2010-12-22 | Muirhead Aerospace Ltd | Motor or transducer winding with diamond-like carbon (DLC) electrically insulating coatings |
| CN102185407A (en) * | 2011-05-13 | 2011-09-14 | 东方电气（乐山）新能源设备有限公司 | Insulating structure for 2MW wind driven generator |
| CN102158023A (en) * | 2011-05-18 | 2011-08-17 | 江苏冰城电材股份有限公司 | Method for manufacturing insulation structure of rotor coil of wind driven generator |
| CN102158022A (en) * | 2011-05-18 | 2011-08-17 | 江苏冰城电材股份有限公司 | Method for manufacturing insulating structure of 3-5MW wind power generator stator coil |
| CN102255448A (en) * | 2011-07-19 | 2011-11-23 | 柳州市明阳机电制造有限责任公司 | Insulation manufacturing method for wind driven generator |
| CN103797695A (en) * | 2011-09-16 | 2014-05-14 | 雷米技术有限公司 | Composite conductor insulation |
| CN103985437A (en) * | 2013-02-13 | 2014-08-13 | 日立金属株式会社 | Insulated electric wire and method of manufacturing the same |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104967266A (en) * | 2015-07-06 | 2015-10-07 | 大唐桂冠合山发电有限公司 | Insulation method of transition lead wire of stator winding in steamer generator |
| CN108512378A (en) * | 2018-03-23 | 2018-09-07 | 哈尔滨电机厂有限责任公司 | A kind of Hydrogen-cooling stator of steam turbine generator parallel ring lead wire insulation manufacturing method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104659988B (en) | 2017-03-01 |
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