CN203377069U - Coil of rolled iron core transformer - Google Patents

Coil of rolled iron core transformer Download PDF

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Publication number
CN203377069U
CN203377069U CN201320404233.9U CN201320404233U CN203377069U CN 203377069 U CN203377069 U CN 203377069U CN 201320404233 U CN201320404233 U CN 201320404233U CN 203377069 U CN203377069 U CN 203377069U
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China
Prior art keywords
iron core
winding
pressure winding
transformer
high pressure
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Active
Application number
CN201320404233.9U
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Chinese (zh)
Inventor
李娟�
原树欣
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WUZHI ELECTRIC POWER Corp
State Grid Corp of China SGCC
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WUZHI ELECTRIC POWER Corp
State Grid Corp of China SGCC
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Priority to CN201320404233.9U priority Critical patent/CN203377069U/en
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Publication of CN203377069U publication Critical patent/CN203377069U/en
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Abstract

The utility model discloses a coil of a rolled iron core transformer and belongs to the field of electrical equipment. The coil of the rolled iron core transformer comprises a low-voltage coil body and a high-voltage coil body, wherein the low-voltage coil body and the high-voltage coil body wind around a coil framework of the same iron core column of rolled iron cores. The low-voltage coil body and the high-voltage coil body are of an integrated structure poured through epoxy resin. An insulation gasket is arranged between the low-voltage coil body and the high-voltage coil body. As the insulation gasket is arranged between the coil bodies, the mechanical strength of the coil can be improved, and the electrical distance between the coil bodies is well ensured. By the adoption of the rolled iron cores, loss of the iron cores is low, the no-load current of the transformer is low, the noise of the transformer is lowered, and the operation efficiency of the transformer is improved.

Description

A kind of winding of reel iron core transformer
Technical field
The utility model relates to field of electrical equipment, particularly a kind of winding of reel iron core transformer.
Background technology
Transformer is that power equipment is generally used in electric power system, the type of power transformer mainly contains oil-immersed power transformer and dry-type power transformer two classes, oil-immersed power transformer needs insulating oil as insulation and heat radiation, therefore maintenance and operating cost are higher, and dry-type power transformer has obvious advantage in these areas.
Dry type volume iron core power transformer combines most of advantage of existing transformer technology, has become the main development direction of power transformer.The iron core of power transformer is mainly to adopt lamination and two kinds of forms of volume iron core, and wherein, the lamination magnetic resistance is larger, causes no-load current large, and no-load loss is high, and adopts the iron core of volume iron core to have in these areas obvious advantage.
The winding of existing cast reel iron core transformer is in actual production process, generally that iron core and line bag are separately produced, then assembling, that is: pre-processed open coil iron core, by low pressure and the high-tension coil of having poured into a mould, successively by the opening volume iron core of packing into, then will roll up the docking of turning back of iron core opening, because iron core has the opening loss.
In dry-type transformer, especially the dry-type transformer of insulation resin, generally adopt layered structure usually.When the number of plies one regularly, if each layer of number of turn increases, voltage between layers improves, and has so just caused the width of layer insulation, winding to increase to size.Adopt segmented layered winding in order to improve this situation, be about to the laminar winding and change the version by several laminar windings in series into.
In realizing process of the present utility model, the inventor finds that at least there is following problem in prior art:
Insulation is not set separately between its laminar winding, but directly when cast, allows the space between epoxy resin filling laminar winding produce insulation.Like this, aborning, the insulation distance between bad control laminar winding simultaneously, also very easily makes laminar winding displacement in casting process, makes hypotelorism between the laminar winding and causes eddy current loss, the problems such as partial discharge and turn-to-turn short circuit.
Summary of the invention
In order to solve the problem of prior art, the utility model embodiment provides a kind of winding of reel iron core transformer.Described technical scheme is as follows:
The utility model embodiment provides a kind of winding of reel iron core transformer, and the winding of described reel iron core transformer comprises low pressure winding and the high pressure winding on the coil rack that is around in the same iron core column of rolling up iron core;
Described low pressure winding and described high pressure winding are overall structure by poured with epoxy resin;
Be provided with insulating cell between described low pressure winding and described high pressure winding.
Particularly, described high pressure winding is provided with pressure regulation terminal, high-voltage outlet terminal and the high-voltage terminal insulator be linked in sequence successively.
Particularly, the every layer line circle of the thickness of described insulating cell and winding is of uniform thickness.
Particularly, described iron core is three plane reeling iron cores that independently single frame volume iron core is combined to form, and the top of described volume iron core is provided with the upper end folder, and bottom is provided with the bottom folder;
Described upper end folder is provided with suspension hook, fastening by the folder cylinder lever connecting rod between described upper end folder and described bottom folder.
Preferably, the high pressure winding on described each iron core column, low pressure winding are integrated by the epoxy resin cure of cast.
Preferably, the high pressure winding on described each iron core column, low pressure winding, iron core are integrated by the epoxy resin cure of cast.
The beneficial effect that the technical scheme that the utility model embodiment provides is brought is:
Both can strengthen the mechanical strength of coil by be provided with insulating cell between winding, better guarantee again the electrical distance between winding; Roll up iron core by employing, the loss of iron core is little, and the no-load current of transformer is little, has reduced the noise of transformer, has improved the operational efficiency of transformer.
The accompanying drawing explanation
In order to be illustrated more clearly in the technical scheme in the utility model embodiment, in below describing embodiment, the accompanying drawing of required use is briefly described, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain according to these accompanying drawings other accompanying drawing.
Fig. 1 is the structural representation of the winding of the reel iron core transformer that provides of the utility model embodiment;
Fig. 2 is the A-A view in Fig. 1.
Embodiment
For making the purpose of this utility model, technical scheme and advantage clearer, below in conjunction with accompanying drawing, the utility model execution mode is described in further detail.
The utility model embodiment provides a kind of winding of reel iron core transformer, and referring to Fig. 1, Fig. 2, the winding of described reel iron core transformer comprises the winding 2 be wound on iron core 1.
Particularly, iron core 1 is three plane reeling iron cores 10 that independently single frame volume iron core is combined to form, and on the same iron core column of plane reeling iron core 10, is provided with coil rack 11.Be provided with upper end folder 12 on the top of plane reeling iron core 10, bottom is provided with bottom folder 13, upper end folder 13 is provided with suspension hook 14, and bottom folder 13 is also the mounting seat of transformer, fastening by folder cylinder lever connecting rod 15 between upper end folder 12 and bottom folder 13.
Particularly, winding 2 comprises low pressure winding 21 and the high pressure winding 22 be around on coil rack 11, and low pressure winding 21 and high pressure winding 22 form an integral body by epoxy resin 3 cast, wherein, between low pressure winding 21 and high pressure winding 22, are provided with insulating cell 20.High pressure winding 22 be provided with successively connect pressure regulation terminal 221, high-voltage outlet terminal 222 and high-voltage terminal insulator 223, pressure regulation terminal 221 is in order to adjust the high-tension coil tap, the outlet of low pressure winding 21 is connected with low-pressure line-outgoing insulator 211.
Preferably, the thickness of insulating cell 20 and the every layer line circle of winding 2 is of uniform thickness.Like this, both can strengthen the mechanical strength of coil, prevent the problem that coil produces due to the displacement of coil aborning, simultaneously, better guarantee again the electrical distance between winding.
Preferably, the high pressure winding on each iron core column and low pressure winding are integrated by the epoxy resin cure of cast, the high pressure winding on also can each iron core column, low pressure winding, and the epoxy resin cure of iron core by cast be integrated.
More preferably, iron core 1 is combined to form stereo-triangular wound iron core 10 by three single frame volume iron cores, it only is with the difference of the winding that adopts planar winding iron-core transformer, because variation has occurred for the arrangement mode of stereo-triangular wound iron core 10, thereby is provided with central airway.The iron core 10 of the present embodiment also can form the three-phase and five-pole plane reeling iron core by five single frames volume iron cores, and iron core is realized the winding of three-phase five-leg roll-core transformer thus.
The beneficial effect that the technical scheme that the utility model embodiment provides is brought is:
Both can strengthen the mechanical strength of coil by be provided with insulating cell between winding, better guarantee again the electrical distance between winding; Roll up iron core by employing, the loss of iron core is little, and the no-load current of transformer is little, has reduced the noise of transformer, has improved the operational efficiency of transformer; Because the high and low pressure winding forms overall structure by resin-cast, strengthened the Short Circuit withstand impulsive force of transformer, adopt assembling die that low pressure and high-voltage line bag is integrated poured, reduced difficulty of processing and production cost.
The foregoing is only preferred embodiment of the present utility model, not in order to limit the utility model, all within spirit of the present utility model and principle, any modification of doing, be equal to replacement, improvement etc., within all should being included in protection range of the present utility model.

Claims (6)

1. the winding of a reel iron core transformer, the winding of described reel iron core transformer comprises low pressure winding and the high pressure winding on the coil rack of the same iron core column that is around in the volume iron core; It is characterized in that,
Described low pressure winding and described high pressure winding are overall structure by poured with epoxy resin;
Be provided with insulating cell between described low pressure winding and described high pressure winding.
2. the winding of reel iron core transformer according to claim 1, is characterized in that, described high pressure winding is provided with pressure regulation terminal, high-voltage outlet terminal and the high-voltage terminal insulator be linked in sequence successively.
3. the winding of reel iron core transformer according to claim 1, is characterized in that, being of uniform thickness of the every layer line circle of the thickness of described insulating cell and winding.
4. the winding of reel iron core transformer according to claim 1, is characterized in that,
Described iron core is three plane reeling iron cores that independently single frame volume iron core is combined to form, and the top of described volume iron core is provided with the upper end folder, and bottom is provided with the bottom folder;
Described upper end folder is provided with suspension hook, fastening by the folder cylinder lever connecting rod between described upper end folder and described bottom folder.
5. the winding of reel iron core transformer according to claim 1, is characterized in that, the high pressure winding on described each iron core column, low pressure winding are integrated by the epoxy resin cure of cast.
6. the winding of reel iron core transformer according to claim 1, is characterized in that, the high pressure winding on described each iron core column, low pressure winding, iron core are integrated by the epoxy resin cure of cast.
CN201320404233.9U 2013-07-09 2013-07-09 Coil of rolled iron core transformer Active CN203377069U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201320404233.9U CN203377069U (en) 2013-07-09 2013-07-09 Coil of rolled iron core transformer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201320404233.9U CN203377069U (en) 2013-07-09 2013-07-09 Coil of rolled iron core transformer

Publications (1)

Publication Number Publication Date
CN203377069U true CN203377069U (en) 2014-01-01

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CN201320404233.9U Active CN203377069U (en) 2013-07-09 2013-07-09 Coil of rolled iron core transformer

Country Status (1)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105895338A (en) * 2016-06-29 2016-08-24 天津市特变电工变压器有限公司 Dry type transformer in wind power generator cabin
CN111584219A (en) * 2020-06-10 2020-08-25 青岛鼎信通讯股份有限公司 Three-phase high-frequency transformer applied to power electronic transformer
CN111599580A (en) * 2020-04-26 2020-08-28 青岛鼎信通讯股份有限公司 Medium-voltage high-frequency transformer applied to power electronic transformer

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105895338A (en) * 2016-06-29 2016-08-24 天津市特变电工变压器有限公司 Dry type transformer in wind power generator cabin
CN111599580A (en) * 2020-04-26 2020-08-28 青岛鼎信通讯股份有限公司 Medium-voltage high-frequency transformer applied to power electronic transformer
CN111584219A (en) * 2020-06-10 2020-08-25 青岛鼎信通讯股份有限公司 Three-phase high-frequency transformer applied to power electronic transformer

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