CN102064018A - Damp-proof device for transformer overhauling operation - Google Patents
Damp-proof device for transformer overhauling operation Download PDFInfo
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- CN102064018A CN102064018A CN2010105571881A CN201010557188A CN102064018A CN 102064018 A CN102064018 A CN 102064018A CN 2010105571881 A CN2010105571881 A CN 2010105571881A CN 201010557188 A CN201010557188 A CN 201010557188A CN 102064018 A CN102064018 A CN 102064018A
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- proof device
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Abstract
The invention discloses a damp-proof device for transformer overhauling operation. The bottom of a transformer shell is provided with a vent hole, the vent hole is sequentially connected and communicated with an air pump and an air dryer, and the vent hole is provided with a sealing cover plate through a flange. The damp-proof device can realize timely overhauling of a transformer, is not affected by weather changes and external climate conditions, achieves the effects of shortening the overhauling period and improving the overhauling quality, can ensure that the internal insulator of power equipment does not become damp, and has the advantages of safety, reliability, economy, convenience and the like.
Description
Technical field
The invention belongs to power equipment insulation technology field, particularly a kind of Repair of Transformer operation damp-proof device.
Background technology
In technique known, transformer all is filled with the high pure nitrogen of 0.01-0.03MP before the installation in the device body of main transformer in the back of dispatching from the factory.Nitrogen-sealed is good under the sealing function of transformer case, guarantees that the iron core of enclosure contact with air with coil, prevents to insulate and makes moist.But main transformer staff when installing or overhaul need bleed off nitrogen (broken nitrogen), and the manhole cover of opening on the main transformer shell enters in the device body, and parts such as unshakable in one's determination and coil are checked and other work.This moment, the insulation of main transformer inside just was in exposed state, directly contacted with air.Meet the humidity of air when big, causing that easily insulation makes moist.For preventing unshakable in one's determination and coil insulation damp failure, cause equipment fault, generally the way of Cai Yonging is to limit main transformer to insulate aerial open-assembly time, when the humidity of air was 65%-75%, open-assembly time must not be above 12 hours; The humidity of air is below 65%, and open-assembly time must not surpass 16 hours, and the humidity of air must not be overhauled greater than 75% o'clock.Because the condition of broken nitrogen maintenance is subjected to the influence of external environment conditions such as weather, humidity bigger, therefore often cause the increase of work on the spot amount and incur loss through delay the duration, influence the time rate of power transformation system operation, even cause the phenomenon of main transformer insulation damages.When maintenance needed operation overnight, night must oiling in transformer, with contacting of isolated humid air and unshakable in one's determination and coil insulation, bothered very much again with the oil discharge in second day, and is time-consuming, influences overhaul efficiency.
Summary of the invention
The objective of the invention is to realize the timely maintenance of transformer, be not subjected to the influence of Changes in weather and extraneous weather conditions, maintenance duration is short, and repair quality is good, and can guarantee that the transformer built-in electrical insulation does not make moist and the Repair of Transformer operation damp-proof device of maintainer's safety.
Realize that the technical scheme that purpose of the present invention adopts is: this device is to be provided with air vent hole in the bottom of transformer case, and this air vent hole connects successively and is communicated with air pump and air dryer, and air vent hole is connected with seal cover board by flange.
According to the Repair of Transformer operation damp-proof device that such scheme is made, its beneficial effect is:
1, so long as not sleety weather, the influence that device body inspection work is not changed by extraneous weather conditions all can normally substantially.Can not cause construction delay.
2, the purity of the pressure-fired dry air that provides in the device body of dry air machine can reach 99%, and humidity is also less, can guarantee that the built-in electrical insulation of power equipment does not make moist.
3, the maintainer can not suffocate because of anoxic when device interior is worked.Nitrogen is safer than using, and is reliable, and economy is convenient.
4, for operation overnight, only need seal device body flange everywhere, get final product at the dry air that in the device body, fills 0.02-0.03MPa on the basis of original pressure-fired power, and do not need oiling in the device body, transformer can not make moist yet.Can open manhole cover in second day works on.Reduced oil pumping every day, the workload of oiling reaches the shortening maintenance duration, improves the effect of repair quality.
Description of drawings
Fig. 1 is a structural representation of the present invention.
Embodiment
Referring to Fig. 1, Repair of Transformer operation damp-proof device of the present invention is made up of air pump 3 and air dryer 4, and the air inlet of air pump 3 is connected with the air vent hole 2 that transformer case 1 bottom is provided with air dryer 4 respectively by gas transmission line with the gas outlet.Described air vent hole 2 is connected with the seal cover board (not shown) by flange, so that during upkeep operation is write a Chinese character in simplified form transformer is sealed.When transformer is carried out upkeep operation, can earlier the manhole on the transformer case 15 be opened, lay down the seal cover board of shell 1 bottom air vent 2, and air pump 3 and air dryer 4 are connected with air vent hole 2 by gas transmission line.Start air dryer 4 and air pump 3 then, in transformer case 1, fill dry air, the high pure nitrogen in the transformer is discharged by the manhole on the transformer case 15, and guarantee that pressure in the shell 1 is about 0.005MP with the flow of 0.7～3m3/min.When the oxygen content of shell 1 inner air reached 18%, the operating personnel can enter shell 1 and overhaul.The duration of work air dryer works without cessation, and continues to inject dry air in shell 1, because dry air is in the circulation that does not stop, so the oxygen content of shell 1 inner air all the time more than 18%, can guarantee the work safety of staff in transformer.After finishing upkeep operation, build earlier and with manhole 5, make and keep the pressure of 0.02-0.03MPa in the shell 1 or transformer is vacuumized, remove air dryer 4 and air pump 3 again, seal cover board installed get final product, the purity of the pressure-fired dry air that air dryer 4 provides in transformer can reach 99%, can guarantee that the built-in electrical insulation of power equipment does not make moist.When maintenance needs operation overnight, only need seal on the transformer case 1 flange everywhere, get final product at the dry air that in shell 1, fills 0.02-0.03MPa on the basis of original pressure-fired power, and do not need oiling in shell 1, transformer can not make moist yet.Can open manhole 5 lids in second day and work on, reduce oil pumping every day, the workload of oiling reaches the shortening maintenance duration, improves the effect of repair quality.
Claims (1)
1. Repair of Transformer operation damp-proof device, it is characterized in that: it is to be provided with air vent hole in the bottom of transformer case, and this air vent hole connects successively and is communicated with air pump and air dryer, and air vent hole is connected with seal cover board by flange.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010105571881A CN102064018A (en) | 2010-11-24 | 2010-11-24 | Damp-proof device for transformer overhauling operation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010105571881A CN102064018A (en) | 2010-11-24 | 2010-11-24 | Damp-proof device for transformer overhauling operation |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102064018A true CN102064018A (en) | 2011-05-18 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010105571881A Pending CN102064018A (en) | 2010-11-24 | 2010-11-24 | Damp-proof device for transformer overhauling operation |
Country Status (1)
| Country | Link |
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| CN (1) | CN102064018A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102364625A (en) * | 2011-10-31 | 2012-02-29 | 中国西电电气股份有限公司 | Device and method for preventing body of transformer from being dampened |
| CN103579927A (en) * | 2012-07-18 | 2014-02-12 | 上海宝钢工业技术服务有限公司 | Large-scale transformer coil internal diameter side nondestructive maintenance method |
| CN105118648A (en) * | 2015-09-29 | 2015-12-02 | 国网河南省电力公司南阳供电公司 | Insulation protection device of non-oil-charge electric system transformer |
| CN105186339A (en) * | 2015-08-29 | 2015-12-23 | 国网河南省电力公司南阳供电公司 | Insulation protection device for unfilled transformer |
| CN107578884A (en) * | 2017-09-14 | 2018-01-12 | 裴天锋 | A kind of anti-tidal rip magnetic device of transformer |
| CN109463937A (en) * | 2018-12-25 | 2019-03-15 | 喜临门家具股份有限公司 | A kind of control box with filter device and the bedding using it |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1253389A1 (en) * | 2001-04-24 | 2002-10-30 | Micafil Ag | Process for drying an active part, and apparatus for carrying out this process |
| JP2005183857A (en) * | 2003-12-24 | 2005-07-07 | Aichi Electric Co Ltd | Transformer drying method |
| CN2801270Y (en) * | 2005-05-27 | 2006-08-02 | 李晓昆 | Transformer-dry air generator |
-
2010
- 2010-11-24 CN CN2010105571881A patent/CN102064018A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1253389A1 (en) * | 2001-04-24 | 2002-10-30 | Micafil Ag | Process for drying an active part, and apparatus for carrying out this process |
| JP2005183857A (en) * | 2003-12-24 | 2005-07-07 | Aichi Electric Co Ltd | Transformer drying method |
| CN2801270Y (en) * | 2005-05-27 | 2006-08-02 | 李晓昆 | Transformer-dry air generator |
Non-Patent Citations (2)
| Title |
|---|
| 陈元: "干燥空气在变压器、电抗器等设备检修中的应用", 《变压器》 * |
| 陈元: "干燥空气的制取及其在电力设备检修中的应用", 《电力设备》 * |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102364625A (en) * | 2011-10-31 | 2012-02-29 | 中国西电电气股份有限公司 | Device and method for preventing body of transformer from being dampened |
| CN103579927A (en) * | 2012-07-18 | 2014-02-12 | 上海宝钢工业技术服务有限公司 | Large-scale transformer coil internal diameter side nondestructive maintenance method |
| CN103579927B (en) * | 2012-07-18 | 2017-02-22 | 上海宝钢工业技术服务有限公司 | Large-scale transformer coil internal diameter side nondestructive maintenance method |
| CN105186339A (en) * | 2015-08-29 | 2015-12-23 | 国网河南省电力公司南阳供电公司 | Insulation protection device for unfilled transformer |
| CN105186339B (en) * | 2015-08-29 | 2017-09-15 | 国网河南省电力公司南阳供电公司 | A kind of insulation protection device of non-filling transformer |
| CN105118648A (en) * | 2015-09-29 | 2015-12-02 | 国网河南省电力公司南阳供电公司 | Insulation protection device of non-oil-charge electric system transformer |
| CN107578884A (en) * | 2017-09-14 | 2018-01-12 | 裴天锋 | A kind of anti-tidal rip magnetic device of transformer |
| CN107578884B (en) * | 2017-09-14 | 2019-03-12 | 国网河南省电力公司周口供电公司 | A kind of anti-tidal rip magnetic device of transformer |
| CN109463937A (en) * | 2018-12-25 | 2019-03-15 | 喜临门家具股份有限公司 | A kind of control box with filter device and the bedding using it |
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Application publication date: 20110518 |