CN201898027U

CN201898027U - Drying-free loading-type current transformer

Info

Publication number: CN201898027U
Application number: CN2010206416291U
Authority: CN
Inventors: 薛晚道; 张伟明; 王子凯; 肖蜀光; 于昕; 王文娣
Original assignee: Baoding Tianwei Group Co Ltd
Current assignee: Baoding Tianwei Group Co Ltd
Priority date: 2010-12-06
Filing date: 2010-12-06
Publication date: 2011-07-13
Anticipated expiration: 2020-12-06

Abstract

The utility model relates to a drying-free loading-type current transformer, in particular to a loading-type current transformer for a transformer or for a geographic information system (GIS), which belongs to the manufacturing technical field of the transformer. The utility model adopts the technical scheme that: the drying-free loading-type current transformer comprises an iron core (1), an iron core insulation (2), a conducting wire (3), an interlayer insulation (4), an outer insulation (5) and a leading-out wire (6), wherein the iron core insulation (2) is wound on the iron core (1), the conducting wire (3) is wound outside the iron core insulation (2), the interlayer insulation (4) is wound in the interlayer of the conducting wire, the outer insulation (5) is wound outside the conducting wire, the iron core insulation (2), the interlayer insulation (4) and the outer insulation (5) respectively adopt a polyester film, the leading-out wire adopts a cable, and the polyester films are heated by a heating tool after the current transformer is tested to be qualified, so the polyester films and the current transformer are solidified into a whole, and the humidity can be prevented from entering the current transformer. Due to adoption of the drying-free loading-type current transformer, the drying treatment can be cancelled, the transportation of the oil for filling the transformer can be saved, and the on-site experiment and the on-site assembling can be conveniently realized.

Description

A kind ofly exempt from dry loading type current transformer

Technical field:

The utility model relates to a kind of dry loading type current transformer of exempting from, and particularly transformer is used or GIS loading type current transformer, belongs to instrument transformer manufacturing technology field.

Background technology:

All use the loading type current transformer in large-scale power transformer and the GIS combined electrical apparatus, because of it requires strictness especially to water content in the loading type current transformer, and the scene does not generally possess drying condition.The loading type current transformer need be dry in advance good in manufacturer, transformer need fill transformer oil with the loading type current transformer and be transported to the scene, GIS needs good seal with the loading type current transformer and the drier of packing into is transported to the scene, brings inconvenience for like this transportation, acceptance test and assembled in situ.

The utility model content:

The utility model purpose provides a kind of dry loading type current transformer of exempting from, and exempts from field drying, exempts to fill the transformer oil transportation, solves the problems referred to above that exist in the background technology.

The technical solution of the utility model is:

A kind ofly exempt from dry loading type current transformer, comprise iron core, core inductance, lead, layer insulation, external insulation and lead-out wire, wound core insulation on the iron core, lead is twined in the outside, the interlayer of lead twines layer insulation, external insulation is twined in the lead outside, and wherein core inductance, layer insulation and external insulation all adopt mylar, and lead-out wire adopts cable.

With heating tool mylar is carried out heat treated after the current transformer pass the test, make it be solidified into one, prevent that moisture from entering inside.

If be used in the oil-filled transformer, then lead-out wire adopts the cable of transformer oil resistant.

Said heating tool is a hair dryer.

The beneficial effects of the utility model are: adopt the utility model, can remove dried from, remove from and fill the transformer oil transportation, be convenient to field test and assembling.

Description of drawings:

Fig. 1 is the structural representation of the utility model embodiment;

Fig. 2 is the cross-sectional schematic of the utility model embodiment;

Among the figure: iron core 1, core inductance 2, lead 3, layer insulation 4, external insulation 5, lead-out wire 6.

Embodiment:

Below in conjunction with accompanying drawing, the utility model is described in further detail by embodiment.

A kind ofly exempt from dry loading type current transformer, comprise iron core 1, core inductance 2, lead 3, layer insulation 4, external insulation 5 and lead-out wire 6, wound core insulation 2 on unshakable in one's determination 1, lead 3 is twined in the outside, the interlayer of lead twines layer insulation 4, external insulation 5 is twined in the lead outside, wherein core inductance 2, layer insulation 4 and external insulation 5 all adopt mylar, lead-out wire adopts cable, with heating tools such as hair dryers mylar is carried out heat treated after the current transformer pass the test, make it be solidified into one, prevent that moisture from entering inside.If be used in the oil-filled transformer, then lead-out wire adopts the cable of transformer oil resistant.

Claims

1. exempt from dry loading type current transformer for one kind, it is characterized in that comprising iron core (1), core inductance (2), lead (3), layer insulation (4), external insulation (5) and lead-out wire (6), (1) unshakable in one's determination goes up wound core insulation (2), lead (3) is twined in the outside, the interlayer of lead twines layer insulation (4), external insulation (5) is twined in the lead outside, and wherein core inductance (2), layer insulation (4) and external insulation (5) all adopt mylar, and lead-out wire adopts cable.

According to claim 1 described exempt from dry loading type current transformer, it is characterized in that lead-out wire adopts the cable of transformer oil resistant.