CN206148244U - Coil of dry -type transformer - Google Patents

Abstract

The utility model relates to a transmission line facility field discloses a coil of dry -type transformer very much. Be a plurality of sections net cloth layers by stage between whole net cloth of its inlayer and the outer whole net cloth, segmentation net cloth layer comprises a plurality of layers of segmentation net cloth, between whole net cloth of inlayer and the segmentation net cloth rather than the adjacent layer, between the segmentation net cloth of adjacent layer, twine the high -pressure copper coil of a plurality of circles between outer whole net cloth and the segmentation net cloth rather than the adjacent layer respectively, form between the adjacent high -pressure copper coil with layer turn to turn distance, form with the interval interval between the high -pressure copper coil on adjacent segmentation net cloth layer, with packing insulating material in the interval interval, adjacent section with mutual overlap joint between the segmentation net cloth on layer. The utility model provides the high whole mechanical strength of coil has strengthened the anti burst short circuit ability of coil, has increased the factor of safety of transformer in the use, has reduced the resin quantity, has reduced manufacturing cost.

Description

A kind of dry-type transformer coil

（One）Technical field

The utility model is related to transmission line of electricity facility field, more particularly to a kind of dry-type transformer coil.

（Two）Background technology

At present, when layer winding insulating materials is risen to high pressure copper cash, mutually do not overlap simultaneously between insulating materials between interval And with certain space, because being formed without overlapped points between same layer insulating materials inside high-tension coil after resin-cast shaping One entirety, therefore greatly reduce the overall mechanical strength of high-tension coil, it is huge when easily causing coil sudden short circuit The coil that electric power causes is outward and internal insulating layer ftractures, and hides some dangers for using in transformer.

（Three）The content of the invention

The utility model is in order to make up the defect of prior art, there is provided a kind of high mechanical strength, the dry type of stabilized structure Transformer coil.

The utility model is achieved by the following technical solution：

A kind of dry-type transformer coil, is characterized in that, including internal layer integral grid cloth and outer layer integral grid cloth, described interior It is some sections of segmentation scrim layers between layer integral grid cloth and outer layer integral grid cloth, if the segmentation scrim layer is by dried layer Segmentation grid cloth composition, the internal layer integral grid cloth and be adjacent layer segmentation grid cloth between, the segmentation net of adjacent layer Between lattice cloth, outer layer integral grid cloth and be adjacent layer segmentation grid cloth between wind some circle high pressure copper coils respectively, Same layer turn-to-turn is formed between adjacent high pressure copper coil away from adjacent being segmented between the high pressure copper coil of scrim layer forms same layer Certain distance, with fill insulant in interval spacing, between the segmentation grid cloth of layer, mutually overlap joint forms overlapped points to adjacent segment.

The segmentation scrim layer has four sections.

The beneficial effects of the utility model are：

1st, the utility model is mutually butted with layer, is mutually supported up and down using adjacent section, is carried out insulation to intersegmental gap and is filled out Fill, all grid cloths for making coil inside are connected with each other, after coil casting resin curing molding, coil inside grid cloth framework An entirety is formed, the overall mechanical strength of coil is improve, the anti-sudden short circuit ability of coil is enhanced, transformer is increased Safety coefficient in use, therefore improve the economic and practical of transformer.

2nd, the intersegmental place space of high-tension coil is filled using grid cloth and insulating materials, reduces resin demand, reduces life Produce cost.

（Four）Description of the drawings

The utility model is further described below in conjunction with the accompanying drawings：

Fig. 1 is cross section structure diagram of the present utility model.

In figure, 1 internal layer integral grid cloth, 2 outer layer integral grid cloth, 3 segmentation grid cloths, 4 high pressure copper coils, 5 with layer circle Spacing, 6 overlapped points, 7 insulating materials.

（Five）Specific embodiment

Accompanying drawing is specific embodiment of the utility model.As shown in figure 1, this kind of dry-type transformer coil, including internal layer is whole Volume mesh cloth 1 and outer layer integral grid cloth 2, are four sections of segmentation grids between internal layer integral grid cloth 1 and outer layer integral grid cloth 2 Layer of cloth, if per section segmentation scrim layer by dried layer segmentation grid cloth 3 constitute, internal layer integral grid cloth 1 and be adjacent layer point Between segment mesh cloth 3, between the segmentation grid cloth 3 of adjacent layer, outer layer integral grid cloth 2 and it is adjacent the segmentation grid cloth of layer Wind some circle high pressure copper coils 4 between 3 respectively, same layer turn-to-turn is formed between adjacent high pressure copper coil 4 away from 5, adjacent divides Same interval spacing is formed between the high pressure copper coil 4 of segment mesh layer of cloth, with fill insulant 7 in interval spacing, to reduce ring Oxygen resin demand, due to epoxy resin price it is more expensive than insulating materials 7, it is possible to save production cost；The same layer of adjacent segment Segmentation grid cloth 3 between mutually overlap joint form overlapped points 6.

Net after the utility model winds, it is possible to casting epoxy resin, after epoxy resin is poured, between identical layer Ge Bu is impregnated with by epoxy resin, and the effect of grid cloth is equivalent to the steel structure frame in concrete so that grid cloth is in height Line ball circle inner shaft is upwardly formed an entirety, up and down overlap joint support, strengthens the upper stability inferior of grid cloth.

In addition to technical characteristic described in specification, remaining technical characteristic is technology known to those skilled in the art.

Claims (2)

1. a kind of dry-type transformer coil, is characterized in that, including internal layer integral grid cloth（1）With outer layer integral grid cloth（2）, institute State internal layer integral grid cloth（1）With outer layer integral grid cloth（2）Between be some sections segmentation scrim layers, the segmentation grid cloth If layer is segmented grid cloth by dried layer（3）Composition, the internal layer integral grid cloth（1）With the segmentation grid cloth for being adjacent layer（3） Between, the segmentation grid cloth of adjacent layer（3）Between, outer layer integral grid cloth（2）With the segmentation grid cloth for being adjacent layer（3）It Between wind some circle high pressure copper coils respectively（4）, adjacent high pressure copper coil（4）Between formed same layer turn-to-turn away from（5）, it is adjacent The high pressure copper coil of segmentation scrim layer（4）Between form same interval spacing, with fill insulant in interval spacing（7）, phase Adjacent section with layer segmentation grid cloth（3）Between mutually overlap joint form overlapped points（6）.

2. dry-type transformer coil according to claim 1, is characterized in that, the segmentation scrim layer has four sections.