CN209045256U - A kind of bus supporting insulator - Google Patents

Abstract

The utility model provides a kind of bus supporting insulator, is suitable for GIS GIL equipment, which is characterized in that the bus and bus supporting insulator ontology of shell, GIS the GIL equipment including GIS the GIL equipment；The bus supporting insulator ontology includes that full skirt is climbed in epoxy resin impregnated paper, screening electrodes, electrode protecting layer and increasing；The bus supporting insulator ontology is equipped with epoxy resin impregnated paper described in several layers；The screening electrodes are equipped between any two layers of epoxy resin impregnated paper；The epoxy resin impregnated paper and the screening electrodes are on the bus of the GIS GIL equipment；The epoxy resin impregnated paper is coated with the screening electrodes by the electrode protecting layer；The lateral surface of the electrode protecting layer be equipped with several layers annular the increasing climb full skirt, can effectively increase insulator along face dry arcing distance, avoid the edge flashing of insulator.

Description

A kind of bus supporting insulator

Technical field

The utility model relates to insulator technology field more particularly to a kind of bus supporting insulators.

Background technique

Currently, the GIS/GIL bus supporting insulator of the prior art is the disc insulator and pillar of poured with epoxy resin Insulator (three columns or single-column), wherein the application of disc insulator is relatively more extensive.Using disc insulator supporting way its Bus support is firm reliably, field distribution is more uniform but cost opposite legs insulator is higher, but can separate according to gas chamber It needs to be designed to be isolated disc insulator (every basin, basin surface not aperture, basin two sides gas chamber is not connected to) or connection benzvalene form is exhausted Edge (logical basin, the aperture of basin surface, the connection of basin two sides gas chamber), and it can be designed to three-phase combined type disc insulator as needed Or single-phase disc insulator.Support insulator supporting way has the characteristics that bus support is reliable and cost is relatively low, but pillar Insulator cannot be used to be isolated gas chamber and to the design requirement of strut height and shape height, be easy to appear internal field's concentration, need Carry out insulation system optimization.Now, GIS/GIL bus insulation supporting element uses the disc insulator and pillar of epoxy casting Insulator, disc insulator surface is there are biggish electric field tangential component, normal component and electric field adsorption effect under high voltages, Its surface, which is easy adsorbing contaminant, to cause to pollute and cause edge flashing.

Summary of the invention

The purpose of the utility model embodiment is to provide a kind of bus supporting insulator, is applicable to GIS or GIL is set In standby, can effectively increase insulator along face dry arcing distance, avoid the edge flashing of insulator.

To achieve the above object, the utility model embodiment provides a kind of bus supporting insulator, be suitable for GIS or GIL equipment, the bus and bus supporting insulator of shell, GIS the GIL equipment including GIS the GIL equipment Ontology；The bus supporting insulator ontology includes that full skirt is climbed in epoxy resin impregnated paper, screening electrodes, electrode protecting layer and increasing；Institute Bus supporting insulator ontology is stated equipped with epoxy resin impregnated paper described in several layers；It is equipped between any two layers of epoxy resin impregnated paper described Screening electrodes；The epoxy resin impregnated paper and the screening electrodes are on the bus of the GIS GIL equipment；It is described Epoxy resin impregnated paper is coated with the screening electrodes by the electrode protecting layer；If the lateral surface of the electrode protecting layer is equipped with Full skirt is climbed in the increasing of dried layer annular.

Further, the bus supporting insulator ontology is in contact with the shell of the GIS GIL equipment；It is described The bus of GIS GIL equipment runs through the bus supporting insulator ontology.

Further, the bus supporting insulator ontology is spindle structure.

Bus supporting insulator described in the utility model, compared with the background art caused by the utility model has the advantages that

By providing a kind of bus supporting insulator, being suitable for GIS, perhaps GIL equipment is set including the GIS or GIL The bus and bus supporting insulator ontology of standby shell, GIS the GIL equipment；The bus supporting insulator ontology Full skirt is climbed including epoxy resin impregnated paper, screening electrodes, electrode protecting layer and increasing；The bus supporting insulator ontology is equipped with several The layer epoxy resin impregnated paper；The screening electrodes are equipped between any two layers of epoxy resin impregnated paper；The epoxy resin impregnated paper with The screening electrodes are on the bus of the GIS GIL equipment；The epoxy resin impregnated paper and the screening electrodes quilt The electrode protecting layer cladding；Full skirt is climbed in the increasing that the lateral surface of the electrode protecting layer is equipped with several layers annular, so that The electrode protecting layer lateral surface of bus-bar insulator ontology is set as increasing and climbs the shape of full skirt to increase dry arcing distance, increases all The dry arcing distance of the sum of full skirt outer contour length, so as to effectively increase insulator along face dry arcing distance, to avoid absolutely The edge flashing of edge, and then failure rate is reduced, effectively improve the safety of operation.

Detailed description of the invention

Fig. 1 is a kind of sectional view of bus supporting insulator provided by the embodiment of the utility model；

Fig. 2 is a kind of dry arcing distance schematic diagram of bus supporting insulator provided by the embodiment of the utility model；

Wherein, 1, the shell of GIS GIL equipment；2, the bus of GIS GIL equipment；3, bus supporting insulator sheet Body；31, epoxy resin impregnated paper；32, screening electrodes；33, electrode protecting layer；34, increase and climb full skirt.

Specific embodiment

The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are without creative efforts Every other embodiment obtained, fall within the protection scope of the utility model.

It is a kind of sectional view of bus supporting insulator provided by the embodiment of the utility model referring to Fig. 1.

A kind of bus supporting insulator provided in this embodiment, be suitable for GIS perhaps GIL equipment including the GIS or The shell 1 of GIL equipment, the bus 2 of the GIS GIL equipment and bus supporting insulator ontology 3；The bus support is exhausted Edge ontology 3 includes that full skirt 34 is climbed in epoxy resin impregnated paper 31, screening electrodes 32, electrode protecting layer 33 and increasing；The bus support Insulator body 3 is equipped with epoxy resin impregnated paper 31 described in several layers；It is pressed between any two layers of epoxy resin impregnated paper 31 equipped with described Electrode 32；The epoxy resin impregnated paper 31 is with the screening electrodes 32 on the bus 2 of the GIS GIL equipment；Institute It states epoxy resin impregnated paper 31 and is coated with the screening electrodes 32 by the electrode protecting layer 33；The lateral surface of the electrode protecting layer Full skirt 34 is climbed in the increasing for being equipped with several layers annular.

Further, the bus supporting insulator ontology 3 is in contact with the shell 1 of the GIS GIL equipment；Institute The bus 2 of GIS GIL equipment is stated through the bus supporting insulator ontology 3.

Further, the bus supporting insulator ontology 3 is spindle structure.

Preferably, the screening electrodes 32 be aluminium foil, the electrode protecting layer 33, increasing climb full skirt 34 be pure epoxy resin or Person's epoxy resin impregnated paper；It is insulation gas filled between the bus 2 and the shell 1；Wherein, SF is used in the present embodiment₆Gas, The dielectric strength of insulator can be effectively improved.

Wherein, the screening electrodes number of plies of bus supporting insulator, thickness, every layer of axial length, end length of bench, with And the thickness of the electrode protecting layer made of pure epoxy resin or epoxy resin impregnated paper, shape, position need to pass through insulating Design It checks to determine.In general, the core design parameter for the bus supporting insulator that electrode is pressed can pass through finite element stimulation Software (such as Maxwell) carries out potential and electric field distributions calculating, carries out design optimization for calculated result and determined later.

It should be noted that the process flow of the bus supporting insulator of the present embodiment is to be required first to exist according to design drawing The crimped paper that the corresponding number of plies, length and thickness are wound on the bus mold of up- coiler often rolls one layer of completion according to design size It is required that increasing by one layer of aluminium foil screening electrodes, epoxy impregnation furnace is entered after the completion of all rolling, is dried, vacuumize process Afterwards, start epoxy vacuum impregnation, hot setting is carried out after the completion of to be impregnated, according to layout design by shape turning after the completion of solidification Full skirt is climbed in the increasing circularized, the final molding after polishing；Wherein, polishing step can effectively improve the apparent matter of bus supporting insulator Amount.

Wherein, which, which climbs full skirt 34, can be the equal single umbrella of diameter, be also possible to anisodiametric gamp and umbellule Combination.

In an alternative embodiment, and all long beyond screening electrodes if each layer crimped paper equal length when winding Degree, winding are after the completion the coaxial clyinders for being not impregnated with epoxy, then the electrode protecting layer 33 of the bus supporting insulator is climbed with increasing Full skirt 34 is the epoxy resin impregnated paper not contacted with screening electrodes.

In an alternative embodiment, if when winding each layer wrinkle paper length and respective layer aluminium foil equal length, It is the coaxial cone for being not impregnated with epoxy after the completion of winding, then full skirt is climbed in the electrode protecting layer 33 of the bus supporting insulator and increasing 34 be pure epoxy resin.

It referring to fig. 2, is a kind of dry arcing distance schematic diagram of bus supporting insulator provided by the embodiment of the utility model, it is right In the situation inadequate along face dry arcing distance, it will be turned on the outside of the electrode protecting layer 33 of bus-bar insulator ontology 3 and climb umbrella with increasing The shape of skirt 34 increases dry arcing distance.At this point, dry arcing distance is electrode protecting layer 33 and full skirt 34 is climbed in increasing and insulating gas is handed over The total length of the contour line at interface, the dry arcing distance equivalent to increase the sum of all full skirt outer contour length.

The utility model embodiment is set as increasing and climb by 33 lateral surface of electrode protecting layer in bus-bar insulator ontology 3 The shape of full skirt 34 increases dry arcing distance, increases the dry arcing distance of the sum of all full skirt outer contour length, so as to have Effect increase insulator along face dry arcing distance, to avoid the edge flashing of insulator.Secondly, passing through several layers epoxy resin impregnated paper The structure of screening electrodes 32 is equipped between 31 and every layer of epoxy resin impregnated paper 31, so that every layer of epoxy resin impregnated paper 31 is inside and outside Surface is respectively formed equipotential plane, solves and occurs the phenomenon that interfacial effect under higher working voltage, and is easier to initiation office The problem of portion discharges, can effectively slow down interfacial effect.And epoxy resin impregnated paper 31 and screening electrodes 32 form multilayer platform on the whole Rank is constituted trapezoidal, and bus supporting insulator is uniform along face current potential and local field distribution, and local field strength centrostigma, energy is not present A possibility that effectively reducing along bus supporting insulator surface-discharge, by around epoxy resin impregnated paper 31 and screening electrodes 32 Electrode protecting layer 33 is set, causes electric discharge in gas to avoid the naked leakage of screening electrodes 32, reduces the probability of happening of shelf depreciation. Using the insulator process flow being different from the prior art, it is not easy to the phenomenon that stress raisers occur, can be effectively reduced interior A possibility that stress concentration in portion's causes insulator to burst.It is again, since the prior art is installing fixed normal needs installation specially Busbar joint, be easy to produce die misalignment and busbar joint caused to overheat, by using bus run through bus supporting insulator The structure type of ontology, it is not necessary to busbar joint is designed, thus the risk for avoiding connector from overheating.

The above is preferred embodiments of the present invention, it is noted that for the ordinary skill of the art For personnel, without departing from the principle of this utility model, several improvements and modifications can also be made, these are improved and profit Decorations are also considered as the protection scope of the utility model.

Claims (3)

1. a kind of bus supporting insulator is suitable for GIS GIL equipment, which is characterized in that set including the GIS or GIL The bus and bus supporting insulator ontology of standby shell, GIS the GIL equipment；The bus supporting insulator ontology Full skirt is climbed including epoxy resin impregnated paper, screening electrodes, electrode protecting layer and increasing；The bus supporting insulator ontology is equipped with several The layer epoxy resin impregnated paper；The screening electrodes are equipped between any two layers of epoxy resin impregnated paper；The epoxy resin impregnated paper with The screening electrodes are on the bus of the GIS GIL equipment；The epoxy resin impregnated paper and the screening electrodes quilt The electrode protecting layer cladding；Full skirt is climbed in the increasing that the lateral surface of the electrode protecting layer is equipped with several layers annular.

2. bus supporting insulator as described in claim 1, which is characterized in that the bus supporting insulator ontology with it is described The shell of GIS GIL equipment is in contact；The bus of the GIS GIL equipment runs through the bus supporting insulator sheet Body.

3. bus supporting insulator as described in claim 1, which is characterized in that the bus supporting insulator ontology is spindle Body structure.