CN105048722A - Exciter insulating treatment method - Google Patents
Exciter insulating treatment method Download PDFInfo
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- CN105048722A CN105048722A CN201510365412.XA CN201510365412A CN105048722A CN 105048722 A CN105048722 A CN 105048722A CN 201510365412 A CN201510365412 A CN 201510365412A CN 105048722 A CN105048722 A CN 105048722A
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- exciter
- coil
- insulating
- rectifying disc
- treatment method
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Abstract
The present invention discloses an exciter insulating treatment method. The exciter insulating treatment method comprises the following steps of (1) adopting a method of jetting a cleaning agent to a coil and a rectifying disc in an exciter from top to bottom to clean; (2) putting the coil and the rectifying disc in a drying oven to dry; (3) carrying out the insulation detection on the coil and the rectifying disc, and setting a qualified standard as R>= 100 megohms; if the detection is not qualified, needing to carry out the steps (1) and (2) in the method on the coil and the rectifying disc again, until the detection is qualified; (4) coating insulating paint on the surface of a bare conductive part of the rectifying disc. The above exciter insulating treatment method can prevent an exciter coil winding and the bare conductive part of the rectifying disc from being polluted by an external environment effectively, and enables the possibility that the dielectric strength of an exciter rotor reduces to be reduced, thereby improving the insulating property of the exciter substantially and prolonging the maintenance cycle of the exciter.
Description
Technical field
The present invention relates to exciter area of maintenance, be specifically related to a kind of exciter insulating treatment method.
Background technology
Exciter is used to the key equipment setting up stable DC magnetic field to generating set.Can exciter normally run the normal operation being directly connected to generator.In generator operation, the exposed current-carrying part of exciter coil windings and rectifying disc is subject to external environmental and exciter rotor dielectric strength is declined, generator rotor ground fault must be caused when exciter rotor dielectric strength drops to a certain degree, thus generator cannot normally be run.
Summary of the invention
Technical problem to be solved by this invention is: will provide a kind of exciter insulating treatment method that can effectively prevent the exposed current-carrying part of exciter coil windings and rectifying disc to be subject to external environmental.
In order to solve the problem, the technical solution used in the present invention is: exciter insulating treatment method, is characterized in: described process method step is as follows:
(1) employing is from top to bottom cleaned the method for the coil in exciter and rectifying disc jet cleaner, and during cleaning, the distance of spray gun and exciter coil and rectifying disc remains on 25 ~ 35CM; When cleaning exciter rectifying disc inside narrow gap, the method that spray gun takes inclination 35 ~ 55 degree to spray is cleaned; Spray gun scavenging period is not less than 30 minutes;
(2) then the coil cleaned and rectifying disc being put into initial temperature is that the baking oven of 70 ~ 90 DEG C carries out preheating, warm-up time is 50 ~ 70min, then baking oven is warming up to 100 ~ 120 DEG C by 70 ~ 90 DEG C and is incubated, and the heating-up time is 20 ~ 40min, and temperature retention time is 5 ~ 6h;
(3) carry out Insulation monitoring to the coil of drying and rectifying disc, criterion of acceptability is R >=100M Ω; As defective in detected, above-mentioned step (1), (2) need be re-started to coil and rectifying disc, until detect qualified till;
(4) at the external coating insulating varnish of the exposed current-carrying part of rectifying disc.
Further, aforesaid exciter insulating treatment method, wherein: cleaning agent is electrified cleaning agent.
Further, aforesaid exciter insulating treatment method, wherein: insulating varnish is fast dry insulating paint.
Further, aforesaid exciter insulating treatment method, wherein: the expulsion pressure of spray gun is 0.4 ~ 0.6MPa.
Further, aforesaid exciter insulating treatment method, wherein: insulating varnish needs to make its static 8 ~ 12min before brushing, can start mopping after bubble collapse in insulating varnish.
Further, aforesaid exciter insulating treatment method, wherein: process method step (2) is: first the coil cleaned and rectifying disc being put into initial temperature is that the baking oven of 80 DEG C carries out preheating, warm-up time is 60min, then baking oven is warming up to 110 DEG C by 80 DEG C and is incubated, heating-up time is 30min, and temperature retention time is 5.5h.
Further, aforesaid exciter insulating treatment method, wherein: in process method step (3), adopts 500V insulating megger to carry out Insulation monitoring to the coil of drying and rectifying disc.
Advantage of the present invention is: described exciter insulating treatment method can effectively prevent the exposed current-carrying part of exciter coil windings and rectifying disc to be subject to external environmental, thus substantially increases the insulation property of exciter, extends the repair and maintenance cycle of exciter.
Embodiment
Below in conjunction with specific embodiment, the present invention is described in further detail.
Exciter insulating treatment method, described process method step is as follows:
(1) employing is from top to bottom cleaned the method for the coil in exciter and rectifying disc jet cleaner, during cleaning, the distance of spray gun and exciter coil and rectifying disc remains on 25 ~ 35CM, if this is because spray gun can cause scouring force inadequate away from exciter coil and rectifying disc are crossed, thus be difficult to conduct electricity dust and grease and wash away, and if spray gun from wash surface being caused too small close to exciter coil and rectifying disc are crossed thus the waste of cleaning agent can being caused; When cleaning the inner narrow gap of exciter rectifying disc, the method that spray gun takes inclination 35 ~ 55 degree to spray is cleaned, and inclination injection can make inside can conduct electricity dust and grease more easily to be taken out of by cleaning agent; Spray gun scavenging period is not less than 30 minutes, the expulsion pressure of spray gun is 0.4 ~ 0.6MPa, splash when conference makes cleaning agent wash away this is because expulsion pressure is crossed and cause the waste of cleaning agent, and the too small meeting of expulsion pressure causes scouring force to be difficult to conduct electricity dust and grease not washing away; In the present embodiment, cleaning agent is electrified cleaning agent, Ace-25 electrified cleaning agent that preferred Huayang-En Sai Co., Ltd produces, electrified cleaning agent is a kind of safe, economic agent for cleaning electric apparatus, and its cleansing power is strong, energy rapid permeability, dissolving, stripping greasy dirt, cleaning performance is good, and it can volatilize completely, is not with penetrating odor, to human non-toxic's evil, do not stay residue after volatilization and noncondensing steam;
(2) then the coil cleaned and rectifying disc being put into initial temperature is that the baking oven of 80 DEG C carries out preheating, and warm-up time is 60min, and then baking oven is warming up to 110 DEG C by 80 DEG C and is incubated, and the heating-up time is 30min, and temperature retention time is 5.5h;
(3) carry out Insulation monitoring to the coil of drying and rectifying disc, in the present embodiment, use 500V insulating megger to carry out Insulation monitoring to the coil of drying and rectifying disc, 500V insulating megger is simple to operate, low price; Criterion of acceptability is R >=100M Ω; As defective in detected, above-mentioned step (1), (2) need be re-started to coil and rectifying disc, until detect qualified till;
(4) at the external coating insulating varnish of the exposed current-carrying part of rectifying disc, the object of brushing insulating varnish is to form parcel with insulating varnish to current-carrying part, the unfavorable factors such as conduction dust, humid air and exposed current-carrying part are separated, thus good insulation property can be kept for a long time.In the present embodiment, insulating varnish is fast dry insulating paint, the JF-3101 fast dry insulating paint (first group) that preferred Suzhou Jufeng Electrical Insulation System Co., Ltd. produces and JF-3101 fast dry insulating paint (second group), JF-3101 fast dry insulating paint (first group) and JF-3101 fast dry insulating paint (second group) used in combination with the ratio of 1:2, and need after insulating varnish is deployed to make its static 8 ~ 12min, mopping can be started after bubble collapse in insulating varnish, the advantage of fast dry insulating paint is: energy air drying, easy to use, paint film is hard durable, and adhesive force is good.
Beneficial effect of the present invention is: described exciter insulating treatment method can effectively prevent the exposed current-carrying part of exciter coil windings and rectifying disc to be subject to external environmental, reduce the possibility that exciter rotor dielectric strength declines, thus substantially increase the insulation property of exciter, extend the repair and maintenance cycle of exciter.
Claims (7)
1. exciter insulating treatment method, is characterized in that: described process method step is as follows:
(1) employing is from top to bottom cleaned the method for the coil in exciter and rectifying disc jet cleaner, and during cleaning, the distance of spray gun and exciter coil and rectifying disc remains on 25 ~ 35CM; When cleaning exciter rectifying disc inside narrow gap, the method that spray gun takes inclination 35 ~ 55 degree to spray is cleaned; Spray gun scavenging period is not less than 30 minutes;
(2) then the coil cleaned and rectifying disc being put into initial temperature is that the baking oven of 70 ~ 90 DEG C carries out preheating, warm-up time is 50 ~ 70min, then baking oven is warming up to 100 ~ 120 DEG C by 70 ~ 90 DEG C and is incubated, and the heating-up time is 20 ~ 40min, and temperature retention time is 5 ~ 6h;
(3) carry out Insulation monitoring to the coil of drying and rectifying disc, criterion of acceptability is R >=100M Ω; As defective in detected, above-mentioned step (1), (2) need be re-started to coil and rectifying disc, until detect qualified till;
(4) at the external coating insulating varnish of the exposed current-carrying part of rectifying disc.
2. exciter insulating treatment method according to claim 1, is characterized in that: cleaning agent is electrified cleaning agent.
3. exciter insulating treatment method according to claim 1 and 2, is characterized in that: insulating varnish is fast dry insulating paint.
4. exciter insulating treatment method according to claim 1 and 2, is characterized in that: the expulsion pressure of spray gun is 0.4 ~ 0.6MPa.
5. exciter insulating treatment method according to claim 1 and 2, is characterized in that: insulating varnish needs to make its static 8 ~ 12min before brushing, can start mopping after bubble collapse in insulating varnish.
6. exciter insulating treatment method according to claim 1 and 2, it is characterized in that: process method step (2) is: first the coil cleaned and rectifying disc being put into initial temperature is that the baking oven of 80 DEG C carries out preheating, warm-up time is 60min, then baking oven is warming up to 110 DEG C by 80 DEG C and is incubated, heating-up time is 30min, and temperature retention time is 5.5h.
7. exciter insulating treatment method according to claim 1 and 2, is characterized in that: in process method step (3), adopts 500V insulating megger to carry out Insulation monitoring to the coil of drying and rectifying disc.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510365412.XA CN105048722A (en) | 2015-06-29 | 2015-06-29 | Exciter insulating treatment method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510365412.XA CN105048722A (en) | 2015-06-29 | 2015-06-29 | Exciter insulating treatment method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105048722A true CN105048722A (en) | 2015-11-11 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510365412.XA Pending CN105048722A (en) | 2015-06-29 | 2015-06-29 | Exciter insulating treatment method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106443442A (en) * | 2016-09-06 | 2017-02-22 | 滕方剑 | Automatic insulation detection, automatic baking and automatic grounding integrated device for high-voltage motor |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003518906A (en) * | 1999-12-28 | 2003-06-10 | アルストム （スウィツァーランド） リミテッド | Method for producing high quality insulator of electric conductor or conductor bundle of rotary electric machine using spray sintering method |
| 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 |
-
2015
- 2015-06-29 CN CN201510365412.XA patent/CN105048722A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003518906A (en) * | 1999-12-28 | 2003-06-10 | アルストム （スウィツァーランド） リミテッド | Method for producing high quality insulator of electric conductor or conductor bundle of rotary electric machine using spray sintering method |
| 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 |
Non-Patent Citations (1)
| Title |
|---|
| 赵家礼: "《电机修理改装手册》", 30 June 1993 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106443442A (en) * | 2016-09-06 | 2017-02-22 | 滕方剑 | Automatic insulation detection, automatic baking and automatic grounding integrated device for high-voltage motor |
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Application publication date: 20151111 |