CN209056333U - A kind of bus supporting insulator - Google Patents

Abstract

The utility model provides a kind of bus supporting insulator, be suitable for GIS perhaps shell of the GIL equipment including GIS the GIL equipment, GIS the GIL equipment bus and bus supporting insulator ontology；Wherein, the bus supporting insulator ontology includes epoxy resin impregnated paper, screening electrodes and electrode protecting layer；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, can effectively slow down interfacial effect, reduces the probability of happening of shelf depreciation, and then the failure rate of insulator is effectively reduced, and improves its operational reliability.

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.The GIS/GIL bus of the prior art supports Insulator (referring to Fig. 1) disc insulator and bus interface portion are less, therefore need special bus to connect when installing fixed Head needs in advance to imbed connector in insulator to keep relatively fixed, requires production and mounting process high, easy production It gives birth to die misalignment and leads to connector hot-spot.Using the firm reliable, electric field point of its bus of disc insulator supporting way support Cloth is more uniform but cost opposite legs insulator is higher, but isolation benzvalene form insulation can be designed to according to the needs that gas chamber separates Sub (every basin, basin surface not aperture, basin two sides gas chamber is not connected to) or connection disc insulator (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 or single-phase disc insulator as needed.Pillar is exhausted Edge supporting way have the characteristics that bus support reliably and cost it is relatively low, but support insulator cannot for be isolated gas chamber, And to the design requirement of strut height and shape height, it is easy to appear internal field's concentration, needs to carry out insulation system optimization.

Now, GIS/GIL bus insulation supporting element uses the disc insulator and support insulator of epoxy casting.? 500kV and following voltage class, although when have the equipment fault caused by insulated support, overall operation is all right, Failure rate is lower, has mature use experience.But in answering for exchange 750kV and above and direct current GIS/GIL With there is also increased and DC voltage polarity effect bring electric insulation problem due to alternating voltage.Disc insulator and bus Installation fixing position sets electric field distortion caused by the dielectric interface effect of presence " epoxy-SF6- conductor " three binding sites, i.e., so-called " interfacial effect ", and under higher working voltage, which can be amplified, and be easier to cause shelf depreciation.

Summary of the invention

The purpose of the utility model embodiment is to provide a kind of bus supporting insulator, can effectively be applied to GIS or GIL It in equipment, can effectively slow down interfacial effect, reduce the probability of happening of shelf depreciation, and then the failure rate of insulator is effectively reduced.

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 supports insulative of shell, GIS the GIL equipment including GIS the GIL equipment Sub- ontology；Wherein, the bus supporting insulator ontology includes epoxy resin impregnated paper, screening electrodes and electrode protecting layer；It is described Bus supporting insulator ontology is equipped with epoxy resin impregnated paper described in several layers；It is equipped between any two layers of epoxy resin impregnated paper described equal Piezoelectricity pole；The epoxy resin impregnated paper and the screening electrodes are on the bus of the GIS GIL equipment；The ring Oxygen resin impregnated paper is coated with the screening electrodes by the electrode protecting layer.

As an improvement of the above scheme, the shell phase of the bus supporting insulator ontology and GIS the GIL equipment Contact；The bus of the GIS GIL equipment runs through the bus supporting insulator ontology.

As an improvement of the above scheme, the bus supporting insulator ontology is spindle structure.

Compared with prior art, a kind of beneficial effect of bus supporting insulator provided by the utility model is: passing through Bus supporting insulator includes the bus and bus branch of the shell of the GIS GIL equipment, GIS the GIL equipment Support insulator body；Wherein, the bus supporting insulator ontology includes epoxy resin impregnated paper, screening electrodes and electrode protection Layer；The bus supporting insulator ontology is equipped with epoxy resin impregnated paper described in several layers；It is set between any two layers of epoxy resin impregnated paper There are the screening electrodes；The epoxy resin impregnated paper is with the screening electrodes wound on the bus of the GIS GIL equipment On；The epoxy resin impregnated paper is coated with the screening electrodes by the electrode protecting layer, so that since several layers epoxy is arranged Screening electrodes are equipped between resin impregnated paper and every layer of epoxy resin impregnated paper, the inner and outer surfaces of every layer of epoxy resin impregnated paper distinguish shape It at equipotential plane, solves and occurs the phenomenon that interfacial effect under higher working voltage, and be easier to cause asking for shelf depreciation Topic, can effectively slow down interfacial effect；And epoxy resin impregnated paper forms multilayer steps on the whole with screening electrodes and constitutes trapezoidal, mother Line supporting insulator is uniform along face current potential and local field distribution, and local field strength centrostigma is not present, can effectively reduce along bus A possibility that supporting insulator surface-discharge, by the way that electrode protecting layer is arranged around epoxy resin impregnated paper and screening electrodes, with It avoids the naked leakage of screening electrodes from causing electric discharge in gas, reduces the probability of happening of shelf depreciation.Using what is be different from the prior art Insulator process flow, it is not easy to the phenomenon that stress raisers occur, internal stress concentration, which can be effectively reduced, leads to insulator A possibility that explosion.It is to run through the structure type of supporting insulator ontology by using bus again, it is not necessary to busbar joint is designed, To the risk for avoiding connector from overheating.To sum up, insulator can be effectively reduced in bus supporting insulator provided by the utility model Failure rate improves its operational reliability.

Detailed description of the invention

Fig. 1 is the sectional view of the GIS/GIL bus supporting insulator of the utility model prior art；

Fig. 2 is a kind of sectional view for bus supporting insulator that the utility model embodiment one provides；

Fig. 3 is a kind of sectional view for bus supporting insulator that the utility model embodiment two provides；

Fig. 4 is a kind of sectional view for bus supporting insulator that the utility model embodiment three provides；

Fig. 5 is a kind of sectional view for bus supporting insulator that the utility model embodiment four provides；

Fig. 6 is a kind of dry arcing distance schematic diagram for bus supporting insulator that the utility model embodiment four provides；

Fig. 7 is a kind of sectional view for bus supporting insulator that the utility model embodiment five provides；

Fig. 8 is a kind of sectional view for bus supporting insulator that the utility model embodiment six provides；

Wherein, 1, the shell of GIS GIL equipment；11, busbar joint；12, disc insulator；2, GIS or GIL are set Standby bus；3, bus supporting insulator ontology；31, epoxy resin impregnated paper；32, screening electrodes；33, electrode protecting layer；34, increase Climb full skirt；41, the first air channel；42, the second air channel.

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 referring to fig. 2, is a kind of sectional view for bus supporting insulator that the utility model embodiment one provides.

The bus supporting insulator that embodiment one provides, shell 1, the GIS including GIS the GIL equipment or The bus 2 and bus supporting insulator ontology 3 of person's GIL equipment；The bus supporting insulator ontology 3 is soaked including epoxy resin Paper 31, screening electrodes 32 and electrode protecting layer 33；The bus supporting insulator ontology 3 is equipped with the leaching of epoxy resin described in several layers Paper 31；The screening electrodes 32 are equipped between any two layers of epoxy resin impregnated paper 31；The epoxy resin impregnated paper 31 is pressed with described Electrode 32 is on the bus 2 of the GIS GIL equipment；The epoxy resin impregnated paper 31 and 32 quilt of screening electrodes The electrode protecting layer 33 coats.

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 are aluminium foil, and the electrode protecting layer 33 is pure epoxy resin or 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 can effectively improve The dielectric strength of insulator.

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, carry out hot setting after the completion of to be impregnated, carried out after the completion of solidification according to the shape of layout design Turning should be similar spindle structure as shown in Figure 2, the final molding after polishing after turning；Wherein, polishing step can be effective Improve bus supporting insulator apparent mass.

In an alternative embodiment, and all long beyond screening electrodes if each layer crimped paper equal length when winding Degree, winding after the completion of be the coaxial clyinder for being not impregnated with epoxy, then the electrode protecting layer 33 of the bus supporting insulator be not with The epoxy resin impregnated paper of screening electrodes contact.

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 the electrode protecting layer 33 of the bus supporting insulator is pure epoxy tree Rouge.

The utility model embodiment one includes shell 1, the institute of GIS the GIL equipment by bus supporting insulator The bus 2 and bus supporting insulator ontology 3 of GIS GIL equipment are stated, the bus supporting insulator ontology includes epoxy Resin impregnated paper 31, screening electrodes 32 and electrode protecting layer 33, the bus supporting insulator ontology 3 are equipped with epoxy described in several layers Resin impregnated paper 31 is equipped with the screening electrodes 32, the epoxy resin impregnated paper 31 and institute between any two layers of epoxy resin impregnated paper 31 Screening electrodes 32 are stated on the bus 2 of the GIS GIL equipment, the epoxy resin impregnated paper 31 and the equal piezoelectricity Pole 32 is coated by the electrode protecting layer 33, so that the inner and outer surfaces of every layer of epoxy resin impregnated paper 31 are respectively formed equipotential plane, The gradually transition and homogenization for realizing voltage's distribiuting between high potential bus 2 and low potential shell 1, can effectively slow down " epoxy- SF₆The electric field distortion of three binding site of conductor ", slows down interfacial effect.Secondly, bus supporting insulator ontology 3 is in bus 2 and shell There are coaxial electrode screen between body 1, each layer is made to force equipotential respectively, therefore between the bus 2 of high potential and the shell 1 of ground connection Potential distribution be it is relatively uniform, be not present local field strength centrostigma, can effectively reduce and be put along supporting insulator surface along face A possibility that electric, while by the way that electrode protecting layer 33 is arranged around epoxy resin impregnated paper 31 and screening electrodes 32, to avoid equal The naked leakage in piezoelectricity pole 32 causes electric discharge in insulating gas, reduces the probability of happening of shelf depreciation.Due to the bus supporting insulator Wadding and screening electrodes 32, the process flow of rear epoxide resin vacuum dipping, the epoxy in dipping are wound on bus using elder generation Thermal stress inside resin largely can be dispersed and be absorbed by multilayer wadding, therefore be not easy stress raisers occur The phenomenon that, a possibility that internal stress concentration causes insulator to burst can be effectively reduced.Meanwhile by using bus 2 through mother The structure type of line supporting insulator ontology 3, it is not necessary to busbar joint is designed, thus the risk for avoiding connector from overheating.To sum up, this reality The failure rate of insulator can be effectively reduced with the bus supporting insulator of novel offer, improve its operational reliability.

It is a kind of sectional view for bus supporting insulator that the utility model embodiment two provides referring to Fig. 3.

The bus supporting insulator that embodiment two provides, in the structure basis of above-described embodiment one, the bus support Insulator includes the bus 2 and bus supports insulative of the shell 1 of the GIS GIL equipment, GIS the GIL equipment Sub- ontology 3；The bus supporting insulator ontology includes epoxy resin impregnated paper 31, screening electrodes 32 and electrode protecting layer 33；Institute Bus supporting insulator ontology 3 is stated equipped with epoxy resin impregnated paper 31 described in several layers；It is set between any two layers of epoxy resin impregnated paper 31 There are the screening electrodes 32；The epoxy resin impregnated paper 31 is with the screening electrodes 32 wound on GIS the GIL equipment On bus 2；The epoxy resin impregnated paper 31 is coated with the screening electrodes 32 by the electrode protecting layer 33；The bus support The shell side of the contact surface of the shell 1 of insulator body 3 and GIS the GIL equipment is equipped with the first air channel 41；Wherein, First air channel 41 is the through slot axially penetrated through.

Interface of the bus supporting insulator between bus 2 and ground connection shell 1 is complete fitting and seals, therefore bus The gas chamber of 3 two sides of supporting insulator ontology is separated, settable air channel, realizes the gas connection of two sides gas chamber, with It is consistent the insulating gas pressure of 3 two sides gas chamber of bus supporting insulator ontology.

The utility model embodiment two, using the spindle structure of the coaxial epoxy resin impregnated paper 31 of the multilayer with foil electrode It is supported, realizes that gas chamber is connected to by slotting in bus supporting insulator ontology 3 with the shell side of shell 1 contact surface. Slotting position is ground potential region, therefore does not influence the Potential distribution uniformity of insulator, not will lead to the phenomenon that electric field is concentrated, A possibility that insulator breakdown can be effectively reduced.

It referring to fig. 4, is a kind of sectional view for bus supporting insulator that the utility model embodiment three provides.

The bus supporting insulator for the gas chamber connection that embodiment three provides, in the structure basis of above-described embodiment one, institute State bus 2 and the mother of shell 1, GIS the GIL equipment that bus supporting insulator includes GIS the GIL equipment Line supporting insulator ontology 3；The bus supporting insulator ontology includes that epoxy resin impregnated paper 31, screening electrodes 32 and electrode are protected Sheath 33；The bus supporting insulator ontology 3 is equipped with epoxy resin impregnated paper 31 described in several layers；Any two layers of epoxy resin leaching The screening electrodes 32 are equipped between paper 31；The epoxy resin impregnated paper 31 and the screening electrodes 32 wound on the GIS or On the bus 2 of GIL equipment；The epoxy resin impregnated paper 31 is coated with the screening electrodes 32 by the electrode protecting layer 33；Institute This side of the bus supporting insulator of contact surface for stating bus supporting insulator ontology 3 and the shell 1 is equipped with the second air channel 42；Wherein, second air channel 42 is to axially penetrate through slot.

The utility model embodiment three, using the spindle structure of the coaxial epoxy resin impregnated paper 31 of the multilayer with foil electrode It is supported, is realized by slotting in the bus supporting insulator side of bus supporting insulator ontology 3 and shell 1 contact surface Gas chamber connection.Since the bus supporting insulator is thicker in axial position, which slots to bus supporting insulator sheet The mechanical performance of body 3 influences small, and slotting position closely potential areas, therefore the Potential distribution for not influencing insulator is uniform Property, it not will lead to the phenomenon that electric field is concentrated.

It is a kind of sectional view for bus supporting insulator that the utility model embodiment four provides referring to Fig. 5.

The bus supporting insulator that example IV provides, in the structure basis of above-described embodiment one, the bus support Insulator includes the bus 2 and bus supporting insulator of the shell 1 of the GIS GIL equipment, GIS the GIL equipment Ontology 3；The bus supporting insulator ontology 3 includes that epoxy resin impregnated paper 31, screening electrodes 32, electrode protecting layer 33 and increasing are climbed Full skirt 34；The bus supporting insulator ontology 3 is equipped with epoxy resin impregnated paper 31 described in several layers；Any two layers of epoxy resin leaching The screening electrodes 32 are equipped between paper 31；The epoxy resin impregnated paper 31 and the screening electrodes 32 wound on the GIS or On the bus 2 of GIL equipment；The epoxy resin impregnated paper 31 is coated with the screening electrodes 32 by the electrode protecting layer 33；Institute The lateral surface for stating electrode protecting layer 33 climbs full skirt 34 equipped with the increasing of several layers annular.

Wherein, the increasing climbs full skirt 34 and the bus supporting insulator ontology 3 as casting integral structure.

It should be noted that the epoxy resin leaching that full skirt 34 is contacted by pure epoxy resin or not with screening electrodes is climbed in the increasing Paper is made, and for specific material by depending on the size of epoxy resin impregnated paper 31 and screening electrodes 32, principle and embodiment one are basic It is identical.

Further, the process flow that full skirt is climbed in increasing is basically the same as the first embodiment, and difference is bus supports insulative The increasing that shape turning circularizes according to layout design is climbed full skirt after the completion of solidifying by son, by final molding after polishing；Wherein, should Increasing climbs full skirt and can be the equal single umbrella of diameter, is also possible to the combination of anisodiametric gamp and umbellule.

It is a kind of dry arcing distance schematic diagram for bus supporting insulator that the utility model embodiment four provides referring to Fig. 6.

In the utility model embodiment four, in the case of inadequate along face dry arcing distance, by by bus-bar insulator ontology 3 Electrode protecting layer 33 on the outside of be turned into and climb the shape of full skirt 34 and increase dry arcing distance with increasing.At this point, dry arcing distance is electricity The total length of the contour line of full skirt 34 and insulating gas interface is climbed in pole protective layer 33 and increasing, equivalent to increase all full skirts outside The dry arcing distance of the sum of profile line length, thus effectively increase insulator along face dry arcing distance, to avoid insulator along face Flashover.

It is a kind of sectional view for bus supporting insulator that the utility model embodiment five provides referring to Fig. 7.

A kind of bus supporting insulator that embodiment five provides, in the structure basis of above-described embodiment one, the bus Supporting insulator includes that the shell 1 of the GIS GIL equipment, the bus 2 of the GIS GIL equipment and bus support are exhausted Edge ontology 3；The bus supporting insulator ontology include epoxy resin impregnated paper 31, screening electrodes 32, electrode protecting layer 33 and Full skirt 34 is climbed in increasing；The bus supporting insulator ontology 3 is equipped with epoxy resin impregnated paper 31 described in several layers；Any two layers of asphalt mixtures modified by epoxy resin The screening electrodes 32 are equipped between rouge impregnated paper 31；The epoxy resin impregnated paper 31 is with the screening electrodes 32 wound on the GIS Or on the bus 2 of GIL equipment；The epoxy resin impregnated paper 31 is wrapped with the screening electrodes 32 by the electrode protecting layer 33 It covers；Full skirt 34 is climbed in the increasing that the lateral surface of the bus supporting insulator ontology 3 is equipped with several layers annular；The bus branch The shell side for supportting the contact surface of the shell 1 of insulator body 3 and GIS the GIL equipment is equipped with the first air channel 41；Its In, first air channel 41 is the through slot axially penetrated through.

The bus supports insulative minor structure and embodiment two, example IV of embodiment five are essentially identical, only difference is that Bus supporting insulator climbs full skirt 34 and bus supporting insulator ontology 3 equipped with increasing and the shell side of the contact surface of shell 1 is added First air channel 41.

The through slot of bus supporting insulator ventilation makes bus branch come the gas connection for realizing insulator two sides gas chamber The insulating gas pressure of support 3 two sides gas chamber of insulator body is consistent, and not only has gas chamber connectivity capabilities, but also is avoided absolutely The edge flashing of edge, and then failure rate can be reduced, effectively improve the safety of operation.

It is a kind of sectional view for bus supporting insulator that the utility model embodiment six provides referring to Fig. 8.

A kind of bus supporting insulator that embodiment six provides, in the structure basis of above-described embodiment one, the bus Supporting insulator includes that the shell 1 of the GIS GIL equipment, the bus 2 of the GIS GIL equipment and bus support are exhausted Edge ontology 3；The bus supporting insulator ontology include epoxy resin impregnated paper 31, screening electrodes 32, electrode protecting layer 33 and Full skirt 34 is climbed in increasing；The bus supporting insulator ontology 3 is equipped with epoxy resin impregnated paper 31 described in several layers；Any two layers of asphalt mixtures modified by epoxy resin The screening electrodes 32 are equipped between rouge impregnated paper 31；The epoxy resin impregnated paper 31 is with the screening electrodes 32 wound on the GIS Or on the bus 2 of GIL equipment；The epoxy resin impregnated paper 31 is wrapped with the screening electrodes 32 by the electrode protecting layer 33 It covers；Full skirt 34 is climbed in the increasing that the lateral surface of the bus supporting insulator ontology 3 is equipped with several layers annular；The bus branch This side of the bus supporting insulator of contact surface for supportting insulator body 3 and the shell 1 is equipped with the second air channel 42；Wherein, Second air channel 42 is to axially penetrate through slot.

The bus supports insulative minor structure and embodiment two, example IV of embodiment six are essentially identical, only difference is that The bus support that bus supporting insulator is equipped with the contact surface that full skirt 34 and bus supporting insulator ontology 3 and shell 1 are climbed in increasing is exhausted The second air channel 42 is added on this side of edge.

The through slot of bus supporting insulator ventilation makes bus branch come the gas connection for realizing insulator two sides gas chamber The insulating gas pressure of support 3 two sides gas chamber of insulator body is consistent, and not only has gas chamber connectivity capabilities, but also is avoided absolutely The edge flashing of edge, and then failure rate can be reduced, effectively improve the safety of operation.

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；Wherein, the bus supports insulative Sub- ontology includes epoxy resin impregnated paper, screening electrodes and electrode protecting layer；The bus supporting insulator ontology is equipped with several layers The epoxy resin impregnated paper；The screening electrodes are equipped between any two layers of epoxy resin impregnated paper；The epoxy resin impregnated paper and institute Screening electrodes are stated on the bus of the GIS GIL equipment；The epoxy resin impregnated paper and the screening electrodes are by institute State electrode protecting layer cladding.

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.