CN103887724A - Method and device for supplementing oil to electrified transformer sleeve pipe - Google Patents
Method and device for supplementing oil to electrified transformer sleeve pipe Download PDFInfo
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- CN103887724A CN103887724A CN201410136559.7A CN201410136559A CN103887724A CN 103887724 A CN103887724 A CN 103887724A CN 201410136559 A CN201410136559 A CN 201410136559A CN 103887724 A CN103887724 A CN 103887724A
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Abstract
The invention relates to the field of oil supplement of high-voltage sleeve pipes, in particular to a method and device for supplementing oil to an electrified transformer sleeve pipe. Electrified oil supplement is carried out on the top of a primary sleeve pipe and a secondary sleeve pipe of a transformer with the voltage level higher than 66kV by adopting an equipotential operation method. The method comprises the following specific operating steps that (1) the phase position of the sleeve pipe must be checked before the oil supplement to confirm the consistence with the emergency repair instructions send out by production scheduling, and the facts that the quality of oil in an oil supplementing barrel is qualified and the type of the oil in the oil supplementing barrel is identical with that of the oil inside the sleeve pipe are confirmed; (2) an insulation herringbone ladder is assembled on the ground; (3) after a potential electrician climbs to an operation site at the upper end of the sleeve pipe of the transformer along the herringbone ladder, a safety belt and a shielding potential equalizing wire are hung, sealing screws of the sleeve pipe are unfastened, and an oil filling pipe of the oil supplementing device is inserted into a sealing hole of the sleeve pipe. Compared with the prior art, the method and device for supplementing the oil to the electrified transformer sleeve pipe have the advantages that an equipotential mode of electrified operation is adopted, the blank in the technical aspect of the electrified oil supplement of the transformer sleeve pipes is filled, and good economic benefit and wide application prospects are achieved.
Description
Technical field
The repairing field that the present invention relates to power plant in electric power system, transformer station's mesohigh sleeve pipe, relates in particular to a kind of bushing shell for transformer live line oil make-up method and device.
Background technology
Power transformer is the main operational outfit of power plant and transformer station.Transformer once, secondary sleeve pipe is one of important current-carrying element of transformer, is also the main seal outside transformer tank.The lead-out wire of Transformer Winding must pass insulating sleeve, make between lead-out wire and lead-out wire and transformer case between insulate, play fixing lead-out wire simultaneously.According to equipment state overhauling testing regulations and electrical equipment preventive test code, sleeve pipe need to carry out the oil sample tests such as periodic oily gas chromatographic analysis, breakdown voltage test, minor amount of water measurement.Because time several years of drawing oil sample is accumulated for a long time, cause some transformers sleeve pipe oil level decline or on the low side, even can't see oil level; In addition transformer once, secondary bobbin seal cushion rubber is bad, causes the chronic oil impregnate phenomenon of sleeve pipe to be aggravated gradually, these phenomenons will have a strong impact on transformer safe operation.Bushing shell for transformer as moved in low oil level, few oil or serious oil starvation situation for a long time time, by cause bushing shell for transformer inside electric component insulation reduction, heating, scaling loss, puncture even blast, lead to network system accident, consequence is very serious.Therefore need oil level bushing shell for transformer on the low side to carry out in time repairing, make it to reach normal operation oil level.
When traditional bushing shell for transformer repairing, must have a power failure, after power failure, repairing personnel climb to sleeve pipe upper end, and hand is carried oil can, and by oily gravity repairing, this method exists that grid switching operation is loaded down with trivial details, dangerous larger, the ineffective deficiency of work high above the ground.
The oil drop dripping on repairing middle sleeve in addition, although wiping in time still has remaining insulating oil to cover sleeve pipe porcelain edge, in the time of light rain and large greasy weather, sleeve pipe has oil part can produce serious electric discharge.Occur and year operation for a long time if electric discharge phenomena are frequent, can make this part sleeve pipe external insulating strength reduce, flashover even occurs, cause security incident.
Summary of the invention
The object of this invention is to provide a kind of bushing shell for transformer live line oil make-up method and device, replace traditional repairing mode, can be under charged state, the bushing shell for transformer on the low side to oil level carries out repairing in time, make it to reach normal operation oil level, meet the requirement of different electric pressure bushing shell for transformer operations.
For achieving the above object, the present invention is achieved through the following technical solutions:
A kind of bushing shell for transformer live line oil make-up method, by adopting equal potential working method to carry out live line oil make-up at sleeve pipe and the secondary sleeve pipe top of 66kV and above transformer, its concrete operation step is as follows:
1) before repairing, must check the phase place of sleeve pipe, determine that the emergency first-aid repair instruction of sending with production scheduling is consistent, and oil in definite repairing bucket is qualified and identical with the oily model of inside pipe casing;
2) assemble insulation double ladder on ground, tie up respectively and hang up properly tricing line and transmit rope at ladder head and terraced waist, insulation double ladder is lifted to the below of repairing bushing shell for transformer, erect and adjust after angle, the tricing line on ladder head and terraced waist is fixed locked;
3) equipotential electrician climbs to the operating location of bushing shell for transformer upper end along double ladder, hangs up properly safety belt and shielding equalizer; Equipotential electrician is with cleaning dry towel wiping oil ga(u)ge cloche, check actual oil level, inform after director, open bobbin seal screw, earth potential electrician is restricted the oil fuel tube of recharging oil device is caused to setting by transmission, and equipotential electrician inserts oil fuel tube tube head in bobbin seal hole; In climbing and operating process, equipotential electrician's health and 66kV electric pressure sleeve pipe keep phase spacing to be not less than 0.9m, also to keep combined distance to be not less than 0.8m simultaneously, electrified body over the ground safe distance is not less than 0.7m, while shifting current potential, keep human body exposed part and electrified body safe distance to be not less than 0.2m; 220kV electric pressure sleeve pipe need keep phase spacing to be not less than 2.5m, and combined distance is not less than 2.1m, and electrified body over the ground safe distance is not less than 1.8m; While shifting current potential, keep human body exposed part and electrified body safe distance to be not less than 0.3m;
4) earth potential electrician opens the oil pump on recharging oil device, starts oiling; In the time that oil level is in oil ga(u)ge bound prescribed limit, wherein get 1/3 place of bound winter, get 2/3 place of bound summer, equipotential electrician informs that earth potential electrician stops oiling; If oiling exceeds prescribed limit, earth potential electrician closes fuel feeding valve, opens oil return valve, and oil return is to standard oil level;
5), after repairing, equipotential electrician tightens bobbin seal screw, check errorless after, open safety belt, extract shielding equalizer, exit equipotential, An Yuan withdraws from electric field in road, arranges auxiliary Work tool, power cut-off.
Described recharging oil device, comprises self priming pump, oil inlet pipe, flowline, oil return pipe, fuel feeding valve and oil return valve, and one end of fuel feeding valve one is connected through oil inlet pipe with the oil-in A of self priming pump, the other end jockey entrance of fuel feeding valve one; One end of fuel feeding valve two is connected through flowline with the oil-out B of self priming pump, the other end jockey outlet of fuel feeding valve two; Device outlet is connected with oil inlet pipe through oil return pipe one, and oil return pipe one is provided with oil return valve one, and flowline is connected with device portal through oil return pipe two, and oil return pipe two is provided with oil return valve two.
Compared with prior art, the invention has the beneficial effects as follows:
1), adopt the equipotential mode of live line working, in time the decline of bushing shell for transformer oil level or the defect on the low side of operation are carried out to live line oil make-up, avoid inside pipe casing current-carrying element heating, insulation reduction, scaling loss, punctured even blast, lead to network system accident, there is higher safe and reliable property;
2), be applicable to the transformer of 66kV and above, can be used as operational standardization guiding book, normative operation personnel carry out live line oil make-up at the scene, accomplish to have regulations to abide by, and have rule to abide by;
3), reduce transformer fault and moved the full cut-off risk of bringing, reduce transformer and be forced to have a power failure, turn the number of times for load and grid switching operation, and because changing the line load of bringing, powered operation mode turns generation plan, for power grid security orderly function provides sound assurance, fill up the blank of bushing shell for transformer live line oil make-up technical elements, there is good economic benefit and application prospect widely.
Figure of description
Fig. 1 is oiling device oiling view of the present invention;
Fig. 2 is oiling device oil return view of the present invention.
In figure: 1-fuel feeding valve one 2-self priming pump 3-oil inlet pipe 4-device portal 5-fuel feeding valve two 6-flowline 7-device outlet 8-oil return pipe one 9-oil return valve one 10-oil return pipe two 11-oil return valve two 12-bracket 13-handles
Embodiment
Below in conjunction with accompanying drawing, the specific embodiment of the present invention is described further:
Seeing Fig. 1, Fig. 2, is recharging oil device example structure schematic diagram of the present invention, and one end of fuel feeding valve 1 is connected through oil inlet pipe 3 with the oil-in A of self priming pump 2, the other end jockey entrance 4 of fuel feeding valve 1; One end of fuel feeding valve 25 is connected through flowline 6 with the oil-out B of self priming pump 2, the other end jockey outlet 7 of fuel feeding valve 25; Device outlet 7 is connected with oil inlet pipe 3 through oil return pipe 1, and oil return pipe 1 is provided with oil return valve 1, and flowline 6 is connected with device portal 4 through oil return pipe 2 10, and oil return pipe 2 10 is provided with oil return valve 2 11.For convenient mobile, recharging oil device is arranged on a bracket 12, and bracket 12 both sides are also provided with handle 13.
Bushing shell for transformer live line oil make-up method of the present invention is exactly that its concrete operation step is as follows by adopting equal potential working method to carry out live line oil make-up at sleeve pipe and the secondary sleeve pipe top of 66kV and above transformer:
1) before repairing, must check the phase place of sleeve pipe, determine that the emergency first-aid repair instruction of sending with production scheduling is consistent, and oil in definite repairing bucket is qualified and identical with the oily model of inside pipe casing;
2) assemble insulation double ladder on ground, tie up respectively and hang up properly tricing line and transmit rope at ladder head and terraced waist, insulation double ladder is lifted to the below of repairing bushing shell for transformer, erect and adjust after angle, the tricing line on ladder head and terraced waist is fixed locked;
3) equipotential electrician climbs to the operating location of bushing shell for transformer upper end along double ladder, hangs up properly safety belt and shielding equalizer; Equipotential electrician is with cleaning dry towel wiping oil ga(u)ge cloche, check actual oil level, inform after director, open bobbin seal screw, earth potential electrician is restricted the oil fuel tube tube head of the device outlet that connects recharging oil device is caused to setting by transmission, device portal is connected to repairing bucket by flexible pipe, and equipotential electrician inserts oil fuel tube tube head in bobbin seal hole; In climbing and operating process, equipotential electrician's health and 66kV electric pressure sleeve pipe keep phase spacing to be not less than 0.9m, also to keep combined distance to be not less than 0.8m simultaneously, electrified body over the ground safe distance is not less than 0.7m, while shifting current potential, keep human body exposed part and electrified body safe distance to be not less than 0.2m; 220kV electric pressure sleeve pipe need keep phase spacing to be not less than 2.5m, and combined distance is not less than 2.1m, and electrified body over the ground safe distance is not less than 1.8m; While shifting current potential, keep human body exposed part and electrified body safe distance to be not less than 0.3m;
4) first earth potential electrician opens fuel feeding valve 1 and the fuel feeding valve 25 on recharging oil device, closes oil return valve 1 and oil return valve 2 11, then the self priming pump 2 on recharging oil device is opened, and starts oiling; In the time that oil level is in oil ga(u)ge bound prescribed limit, wherein get 1/3 place of bound winter, get 2/3 place of bound summer, equipotential electrician informs that earth potential electrician stops oiling; If oiling exceeds prescribed limit, earth potential electrician closes fuel feeding valve 1 and fuel feeding valve 25, opens oil return valve 1 and oil return valve 2 11, and self priming pump 2 is opened, and oil return is to standard oil level;
5), after repairing, equipotential electrician tightens bobbin seal screw, check errorless after, open safety belt, extract shielding equalizer, exit equipotential, An Yuan withdraws from electric field in road, arranges auxiliary Work tool, power cut-off.
Claims (2)
1. a bushing shell for transformer live line oil make-up method, is characterized in that, by adopting equal potential working method to carry out live line oil make-up at sleeve pipe and the secondary sleeve pipe top of 66kV and above transformer, its concrete operation step is as follows:
1) before repairing, must check the phase place of sleeve pipe, determine that the emergency first-aid repair instruction of sending with production scheduling is consistent, and oil in definite repairing bucket is qualified and identical with the oily model of inside pipe casing;
2) assemble insulation double ladder on ground, tie up respectively and hang up properly tricing line and transmit rope at ladder head and terraced waist, insulation double ladder is lifted to the below of repairing bushing shell for transformer, erect and adjust after angle, the tricing line on ladder head and terraced waist is fixed locked;
3) equipotential electrician climbs to the operating location of bushing shell for transformer upper end along double ladder, hangs up properly safety belt and shielding equalizer; Equipotential electrician is with cleaning dry towel wiping oil ga(u)ge cloche, check actual oil level, inform after director, open bobbin seal screw, earth potential electrician is restricted the oil fuel tube of recharging oil device is caused to setting by transmission, and equipotential electrician inserts oil fuel tube tube head in bobbin seal hole; In climbing and operating process, equipotential electrician's health and 66kV electric pressure sleeve pipe keep phase spacing to be not less than 0.9m, also to keep combined distance to be not less than 0.8m simultaneously, electrified body over the ground safe distance is not less than 0.7m, while shifting current potential, keep human body exposed part and electrified body safe distance to be not less than 0.2m; 220kV electric pressure sleeve pipe need keep phase spacing to be not less than 2.5m, and combined distance is not less than 2.1m, and electrified body over the ground safe distance is not less than 1.8m; While shifting current potential, keep human body exposed part and electrified body safe distance to be not less than 0.3m;
4) earth potential electrician opens the oil pump on recharging oil device, starts oiling; In the time that oil level is in oil ga(u)ge bound prescribed limit, wherein get 1/3 place of bound winter, get 2/3 place of bound summer, equipotential electrician informs that earth potential electrician stops oiling; If oiling exceeds prescribed limit, earth potential electrician closes fuel feeding valve, opens oil return valve, and oil return is to standard oil level;
5), after repairing, equipotential electrician tightens bobbin seal screw, check errorless after, open safety belt, extract shielding equalizer, exit equipotential, An Yuan withdraws from electric field in road, arranges auxiliary Work tool, power cut-off.
2. the recharging oil device described in claim 1, it is characterized in that, comprise self priming pump, oil inlet pipe, flowline, oil return pipe, fuel feeding valve and oil return valve, one end of fuel feeding valve one is connected through oil inlet pipe with the oil-in A of self priming pump, the other end jockey entrance of fuel feeding valve one; One end of fuel feeding valve two is connected through flowline with the oil-out B of self priming pump, the other end jockey outlet of fuel feeding valve two; Device outlet is connected with oil inlet pipe through oil return pipe one, and oil return pipe one is provided with oil return valve one, and flowline is connected with device portal through oil return pipe two, and oil return pipe two is provided with oil return valve two.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410136559.7A CN103887724B (en) | 2014-04-03 | 2014-04-03 | A kind of bushing shell for transformer live line oil make-up method and device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410136559.7A CN103887724B (en) | 2014-04-03 | 2014-04-03 | A kind of bushing shell for transformer live line oil make-up method and device |
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| CN103887724A true CN103887724A (en) | 2014-06-25 |
| CN103887724B CN103887724B (en) | 2016-04-27 |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09266117A (en) * | 1996-03-28 | 1997-10-07 | Toshiba Fa Syst Eng Kk | Oil-immersed electric machine and oiling method for oil-immersed electric machine |
| CN201392708Y (en) * | 2009-03-16 | 2010-01-27 | 华北电网有限公司北京超高压公司 | Automatic oil recharging system |
| CN201682186U (en) * | 2010-03-22 | 2010-12-22 | 郑州赛奥电子有限公司 | Portable sleeve oil supply machine |
| CN202771910U (en) * | 2012-07-31 | 2013-03-06 | 山东电力集团公司济南供电公司 | Transformer oil storage tank for online oil supplement device |
| CN203423032U (en) * | 2013-08-01 | 2014-02-05 | 国家电网公司 | On-line intelligent oil supplementation device for transformer |
| CN203826823U (en) * | 2014-04-03 | 2014-09-10 | 国家电网公司 | Transformer bushing live-line oil filling device |
-
2014
- 2014-04-03 CN CN201410136559.7A patent/CN103887724B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09266117A (en) * | 1996-03-28 | 1997-10-07 | Toshiba Fa Syst Eng Kk | Oil-immersed electric machine and oiling method for oil-immersed electric machine |
| CN201392708Y (en) * | 2009-03-16 | 2010-01-27 | 华北电网有限公司北京超高压公司 | Automatic oil recharging system |
| CN201682186U (en) * | 2010-03-22 | 2010-12-22 | 郑州赛奥电子有限公司 | Portable sleeve oil supply machine |
| CN202771910U (en) * | 2012-07-31 | 2013-03-06 | 山东电力集团公司济南供电公司 | Transformer oil storage tank for online oil supplement device |
| CN203423032U (en) * | 2013-08-01 | 2014-02-05 | 国家电网公司 | On-line intelligent oil supplementation device for transformer |
| CN203826823U (en) * | 2014-04-03 | 2014-09-10 | 国家电网公司 | Transformer bushing live-line oil filling device |
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| CN103887724B (en) | 2016-04-27 |
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Effective date of registration: 20160818 Address after: 114002 Anshan South Road, Tiedong District, Liaoning, Shengli Road, No. 52 Patentee after: Anshan Power Supply Company, State Grid Liaoning Electric Power Co., Ltd. Patentee after: State Grid Corporation of China Address before: 100031 Xicheng District West Chang'an Avenue, No. 86, Beijing Patentee before: State Grid Corporation of China Patentee before: Anshan Power Supply Company, State Grid Liaoning Electric Power Co., Ltd. |