CN102623162A - Outdoor dry current transformer of 35kV and below - Google Patents
Outdoor dry current transformer of 35kV and below Download PDFInfo
- Publication number
- CN102623162A CN102623162A CN2012101376342A CN201210137634A CN102623162A CN 102623162 A CN102623162 A CN 102623162A CN 2012101376342 A CN2012101376342 A CN 2012101376342A CN 201210137634 A CN201210137634 A CN 201210137634A CN 102623162 A CN102623162 A CN 102623162A
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- insulating sleeve
- current transformer
- voltage porcelain
- porcelain bushing
- conducting rod
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Abstract
The invention provides an outdoor dry current transformer of 35kV and below. An outlet box is arranged on a base; a high-voltage porcelain bushing is provided with a shell; an iron core, a primary winding and a secondary winding are poured integrally by using epoxy resin, and are arranged in the shell; a primary wiring terminal is arranged on the side wall of the shell; the shell is provided with a sealing cover; an O-shaped sealing ring with a groove is arranged between the shell and the sealing cover; the upper end of the base is provided with an insulating bushing; a conducting rod is arranged in the insulating bushing, and is connected with a secondary wiring terminal; the secondary wiring terminal is covered by the outlet box; the high-voltage porcelain bushing is arranged on the periphery of the insulating bushing, and is used for supporting the insulating bushing; and the high-voltage porcelain bushing is a high-voltage porcelain bushing with circular cluster parachutes on the outer surface. The current transformer has the advantages of pollution resistance, dampness resistance, electric arc resistance, ultraviolet ray resistance, ageing resistance, long service life, reasonable structure, tight sealing, and capabilities of reducing worsening of transformer errors, eliminating internal corona and enhancing the discharging characteristic of the insulating bushing.
Description
Technical field
The present invention relates to a kind of current transformer, relate in particular to a kind of 35kV and following Outdoor Dry-Type Current Transformer.
Background technology
That oil-immersed current transformer of the prior art exists is inflammable, explosive, contaminated environment and volume are heavy; Also need regularly dielectric loss is chemically examined, surveyed to insulating oil and solve seepage oil, simultaneously problems such as sealing problem can't thoroughly solve after oil sealing is by the oil corrosion.With this, there is not the leakage of oil situation in dry-type current transformer, the better maintenance.But the insulation property and the sealing effectiveness of dry-type current transformer exist not satisfactory situation simultaneously, and with this, the insulation property of dry-type current transformer and the raising of sealing effectiveness are the problems that will solve in the prior art.
Summary of the invention
The purpose of this invention is to provide a kind of 35kV and following Outdoor Dry-Type Current Transformer and solve insulation property and the not satisfactory problem of sealing effectiveness that exists in the prior art.
Technical solution of the present invention is: a kind of 35kV and following Outdoor Dry-Type Current Transformer, comprise primary connection terminal, iron core, winding, secondary winding, outlet box, base, high voltage porcelain bushing and an insulating sleeve, and said outlet box is located on the base; Said high voltage porcelain bushing is provided with housing; Said iron core, winding and secondary winding are one by poured with epoxy resin and are located in the housing that said primary connection terminal is located on the sidewall of housing, and said housing is provided with seal closure; Be provided with the O RunddichtringO of band groove between said housing and seal closure; The upper end of said base is provided with insulating sleeve, is provided with conducting rod in the said insulating sleeve, and said conducting rod connects the secondary connection terminal; Said secondary connection terminal is covered by said outlet box; Said high voltage porcelain bushing places the periphery of said insulating sleeve, is used for supporting said insulating sleeve, and said high voltage porcelain bushing is the high voltage porcelain bushing that outer surface has the round cluster parachute.
Further improve and be: said iron core is the ultramicro-crystal alloy iron core, and said conducting rod is the conducting rod that red copper is processed.
Further improve and be: said insulating sleeve is the true procelain insulated tube, and the inwall of said insulating sleeve scribbles semi-conducting glaze, and said semi-conducting glaze connects said conducting rod through spring leaf.
A kind of 35kV of the present invention and following Outdoor Dry-Type Current Transformer, its iron core, winding and secondary winding be one by poured with epoxy resin and be located in the housing, anti-pollution and humidity, anti-electric arc, UV resistant, ageing-resistant, the life-span is long.The O RunddichtringO of external application metab, high voltage porcelain bushing, housing, seal closure and band groove carries out sealing device, and is rational in infrastructure, sealing is firm.For the installation of replacement oil immersed type old product brings convenience and realizes not have the oiling operation.The outlet of the secondary winding that said insulating sleeve is inner with current transformer is guided to the current transformer outside through conducting rod, promptly plays the effect of insulation against ground, simultaneously, the outlet of secondary winding can be connected with external circuit.Said insulating sleeve is the true procelain sleeve pipe, has good electrical equipment intensity and mechanical strength, and profile little, insulate, in light weight, highly versatile, good seal performance, Maintenance and Repair be convenient.Simultaneously, the ultramicro-crystal alloy iron core can reduce the transformer error variation.Conducting rod in the insulating sleeve is that the conducting rod that red copper is processed has good thermal stability, and the moment in the time of bearing short circuit is overheated, prolongs the useful life of current transformer.Simultaneously, the insulating sleeve periphery is supported by high voltage porcelain bushing, and the outer surface of high voltage porcelain bushing is made the cluster parachute that encloses, can increase the creepage distance of external insulation along face.Inwall at insulating sleeve is coated with semi-conducting glaze, and connects with spring leaf and conducting rod, can make the air chamber short circuit, thereby eliminate inner corona, improves the flash-over characteristic of insulating sleeve.
The invention has the beneficial effects as follows: a kind of 35kV of the present invention and following Outdoor Dry-Type Current Transformer anti-pollution and humidity, anti-electric arc, UV resistant, ageing-resistant, the life-span is long.And rational in infrastructure, sealing is firm.For the installation of replacement oil immersed type old product brings convenience and realizes not have the oiling operation.The cluster parachute that one of setting is enclosed can increase the creepage distance of external insulation along face.Simultaneously, the ultramicro-crystal alloy iron core can reduce the transformer error variation.Conducting rod in the insulating sleeve is that the conducting rod that red copper is processed has good thermal stability, and the moment in the time of bearing short circuit is overheated, prolongs the useful life of current transformer.Inwall at insulating sleeve is coated with semi-conducting glaze, and connects with spring leaf and conducting rod, can make the air chamber short circuit, thereby eliminate inner corona, improves the flash-over characteristic of insulating sleeve.
Description of drawings
Fig. 1 is the structural representation of the embodiment of the invention;
Wherein: 1-primary connection terminal, 2-iron core, winding of 3-, 4-secondary winding, 5-outlet box, 6-base, 7-insulator, 8-housing, 9-seal closure, 10-insulating sleeve, 11-conducting rod, 12-spring leaf.
Embodiment
Specify the preferred embodiments of the present invention below in conjunction with accompanying drawing.
As shown in Figure 1, present embodiment provides a kind of 35kV and following Outdoor Dry-Type Current Transformer, comprises primary connection terminal 1, iron core 2, winding 3, secondary winding 4, outlet box 5, base 6, high voltage porcelain bushing 7 and an insulating sleeve 10; Said outlet box 5 is located on the base 6, and said high voltage porcelain bushing 7 is provided with housing 8, and said iron core 2, winding 3 and secondary winding 4 are one by poured with epoxy resin and are located in the housing 8; Said primary connection terminal 1 is located on the sidewall of housing 8, and said housing 8 is provided with seal closure 9, and 9 of said housing 8 and seal closures are provided with the O RunddichtringO of band groove; The upper end of said base 6 is provided with insulating sleeve 10; Be provided with conducting rod 11 in the said insulating sleeve 10, said conducting rod 11 connects the secondary connection terminal, and said secondary connection terminal is covered by said outlet box 5; Said high voltage porcelain bushing 7 places the periphery of said insulating sleeve 10; Be used for supporting said insulating sleeve 10, said high voltage porcelain bushing 7 has the high voltage porcelain bushing of round cluster parachute for outer surface, and said iron core 2 is the ultramicro-crystal alloy iron core; The conducting rod that said conducting rod 11 is processed for red copper; Said insulating sleeve 10 is the true procelain insulated tube, and the inwall of said insulating sleeve 10 scribbles semi-conducting glaze, and said semi-conducting glaze connects said conducting rod 11 through spring leaf 12.
A kind of 35kV of the present invention and following Outdoor Dry-Type Current Transformer, its iron core 2, winding 3 and secondary winding 4 be one by poured with epoxy resin and be located in the housing 8, anti-pollution and humidity, anti-electric arc, UV resistant, ageing-resistant, the life-span is long.The O RunddichtringO of external application metab 6, high voltage porcelain bushing 7, housing 8, seal closure 9 and band groove carries out sealing device, and is rational in infrastructure, sealing is firm.For the installation of replacement oil immersed type old product brings convenience and realizes not have the oiling operation.The outlet of the secondary winding 4 that said insulating sleeve 10 is inner with current transformer is guided to the current transformer outside through conducting rod 11, promptly plays the effect of insulation against ground, simultaneously, the outlet of secondary winding 4 can be connected with external circuit.Said insulating sleeve 10 is the true procelain sleeve pipe, has good electrical equipment intensity and mechanical strength, and profile little, insulate, in light weight, highly versatile, good seal performance, Maintenance and Repair be convenient.Simultaneously, the ultramicro-crystal alloy iron core can reduce the transformer error variation.The conducting rod 11 that conducting rod 11 in the insulating sleeve 10 is processed for red copper has good thermal stability, and the moment in the time of bearing short circuit is overheated, prolongs the useful life of current transformer.Simultaneously, insulating sleeve 10 peripheries are supported by high voltage porcelain bushing 7, and the outer surface of high voltage porcelain bushing 7 is made the cluster parachute that encloses, can increase the creepage distance of external insulation along face.Inwall at insulating sleeve 10 is coated with semi-conducting glaze, and connects with spring leaf 12 and conducting rod 11, can make the air chamber short circuit, thereby eliminate inner corona, improves the flash-over characteristic of insulating sleeve 10.
The invention has the beneficial effects as follows: a kind of 35kV of the present invention and following Outdoor Dry-Type Current Transformer anti-pollution and humidity, anti-electric arc, UV resistant, ageing-resistant, the life-span is long.And rational in infrastructure, sealing is firm.For the installation of replacement oil immersed type old product brings convenience and realizes not have the oiling operation.The cluster parachute that one of setting is enclosed can increase the creepage distance of external insulation along face.Simultaneously, the ultramicro-crystal alloy iron core can reduce the transformer error variation.Conducting rod in the insulating sleeve is that the conducting rod that red copper is processed has good thermal stability, and the moment in the time of bearing short circuit is overheated, prolongs the useful life of current transformer.Inwall at insulating sleeve is coated with semi-conducting glaze, and connects with spring leaf and conducting rod, can make the air chamber short circuit, thereby eliminate inner corona, improves the flash-over characteristic of insulating sleeve.
Claims (3)
1. a 35kV and following Outdoor Dry-Type Current Transformer; Comprise primary connection terminal (1), iron core (2), a winding (3), secondary winding (4), outlet box (5), base (6), high voltage porcelain bushing (7) and insulating sleeve (10); Said outlet box (5) is located on the base (6); It is characterized in that: said high voltage porcelain bushing (7) is provided with housing (8); Said iron core (2), a winding (3) and secondary winding (4) are one by poured with epoxy resin and are located in the housing (8) that said primary connection terminal (1) is located on the sidewall of housing (8), and said housing (8) is provided with seal closure (9); Be provided with the O RunddichtringO of band groove between said housing (8) and seal closure (9); The upper end of said base (6) is provided with insulating sleeve (10), is provided with conducting rod (11) in the said insulating sleeve (10), and said conducting rod (11) connects the secondary connection terminal; Said secondary connection terminal is covered by said outlet box (5); Said high voltage porcelain bushing (7) places the periphery of said insulating sleeve (10), is used for supporting said insulating sleeve (10), and said high voltage porcelain bushing (7) has the high voltage porcelain bushing of round cluster parachute for outer surface.
2. 35kV as claimed in claim 1 and following Outdoor Dry-Type Current Transformer is characterized in that: said iron core (2) is the ultramicro-crystal alloy iron core, the conducting rod that said conducting rod (11) is processed for red copper.
3. according to claim 1 or claim 2 35kV and following Outdoor Dry-Type Current Transformer; It is characterized in that: said insulating sleeve (10) is the true procelain insulated tube; The inwall of said insulating sleeve (10) scribbles semi-conducting glaze, and said semi-conducting glaze connects said conducting rod (11) through spring leaf (12).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012101376342A CN102623162A (en) | 2012-05-07 | 2012-05-07 | Outdoor dry current transformer of 35kV and below |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012101376342A CN102623162A (en) | 2012-05-07 | 2012-05-07 | Outdoor dry current transformer of 35kV and below |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102623162A true CN102623162A (en) | 2012-08-01 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012101376342A Pending CN102623162A (en) | 2012-05-07 | 2012-05-07 | Outdoor dry current transformer of 35kV and below |
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| CN (1) | CN102623162A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105913979A (en) * | 2016-05-19 | 2016-08-31 | 中科电力装备（安徽）智能化科技有限公司 | Reinforced high-voltage circuit breaker porcelain bushing structure |
| CN109360712A (en) * | 2018-11-27 | 2019-02-19 | 保定天威互感器有限公司 | A kind of transformer external current mutual inductor and its application method |
-
2012
- 2012-05-07 CN CN2012101376342A patent/CN102623162A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105913979A (en) * | 2016-05-19 | 2016-08-31 | 中科电力装备（安徽）智能化科技有限公司 | Reinforced high-voltage circuit breaker porcelain bushing structure |
| CN109360712A (en) * | 2018-11-27 | 2019-02-19 | 保定天威互感器有限公司 | A kind of transformer external current mutual inductor and its application method |
| CN109360712B (en) * | 2018-11-27 | 2023-10-17 | 保定天威互感器有限公司 | External current transformer for transformer and application method thereof |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20120801 |