CN205622188U - GIS terminal insulating seal structure - Google Patents

Abstract

The utility model discloses a GIS terminal insulating seal structure, it includes insulation rubber layer and conductive adhesive layer, insulation rubber layer's one end is the frustum structure and forms butt joint portion, the other end is the cylinder structure and forms connecting portion, the conductive adhesive layer includes this somatic part, this somatic part extends towards connecting portion and forms the stress pyramis that is horn shaped structure, the stress pyramis is embedded in connecting portion, it includes firstly, 2. Some modes of needle punching ar, third, the four bibliographic categories, this somatic part extends towards connecting portion, and outside expansion forms the first portion that is the arc structure, first portion continues to extend and outside expansion forms the second portion that is the arc structure, the outside bending type of this somatic part of court became to be the third portion of arc structure after second portion extended one section, third portion is the fourth portion that horizontally extension formation is horizontal structure towards the outside of this somatic part, fourth portion wears out connecting portion, the stress pyramis is divided equally the distribution with the effectual produced stress electric field of cable with setting up of insulation rubber layer ability and is opened in it to the effectual cable of having avoided excessively generates heat and is punctured.

Description

GIS terminal insulation and sealing structure

Technical field

This utility model relates to a kind of GIS terminal, particularly relates to one and makes the uniform GIS of stress Electric Field Distribution Terminating insulation seals structure.

Background technology

Metal current switchgear (GIS) and high-voltage cross-linking polythene (XLPE) cable run and safety thereof Reliably, save space and save the feature of urban land resource, more and more being used.Cable GIS The safe operation of terminal is to guaranteeing that network system safe operation is significant.

According to the requirement of national standard, electrical performance test must be done when cable accessory dispatches from the factory, including industrial frequency withstand voltage With local discharge test, to guarantee that electric property reaches standard-required.The terminals such as 110kVGIS, 220KVGIS It is energized after erecting bed is inserted directly into GIS device terminal, once occurs cable accessory to make wrong or prefabricated There is the defect such as bubble, impurity in stress cone, it will occurs that cable breakdown burns or climbing occurs in inner cone insulated receptacle The phenomenons such as electricity vestige, have a strong impact on the operation of GIS device terminal, cause considerable damage.110kVGIS、 The terminals such as 220KVGIS need it is carried out pressure and partial discharge quantity test before dispatching from the factory, and according to test number It is supplied to user according to making delivery test report.GIS is gas insulated terminal, is arranged on gas-insulated closing and opens Pass equipment (GIS) is internal, with the cable termination of sulfur hexafluoride (SF6) gas gas-insulated part as external insulation, It is also required to the internal operation structure of Simulated GlS equipment during delivery test, GIS terminal is done industrial frequency withstand voltage drawn game Portion's discharge test.

Plug-in GIS terminal has become as the mainstream type of GIS terminal at present, it is possible to achieve epoxy bushing system The GIS terminal insulation and sealing structure made is pre-installed on GIS switch in factory, and circuit is direct when assembling Insertion cable.But either carry out delivery test or the proof test of circuit installation of GIS switch Time, there is air inside GIS terminal insulation and sealing structure, easily discharge, affect the product of whole GIS switch Matter test effect.

The principle of GIS terminal insulation and sealing structure design is to improve the Electric Field Distribution situation of cable termination and joint, Due on the make, need to cut off the protective metal shell of cable, screen layer and insulating barrier so that conductor connects Place geometry and cross section there occurs change, augment simultaneously insulation, the dielectric coefficient of superinsulation and thickness and The difference of cable body insulant, these all will cause the Electric Field Distribution at GIS terminal insulation and sealing structure Relatively cable body generation large change, pole appearance causes conductor external carbuncle electric field to be concentrated, thus causes cable by mistake Degree heating or breakdown, causes security incident.

Therefore, need one badly and make the more uniform GIS terminal insulation and sealing structure of conductor external carbuncle Electric Field Distribution.

Utility model content

The purpose of this utility model is to provide one to make the more uniform GIS of conductor external carbuncle Electric Field Distribution eventually End insulation and sealing structure.

For achieving the above object, this utility model provides a kind of GIS terminal insulation and sealing structure, its feature It is: including all the insulation glue-line in hollow structure and conductive adhesive layer, one end of described insulation glue-line is frustum Structure also forms docking section, and the other end of described insulation glue-line is column structure and forms connecting portion, described in lead Electricity glue-line includes body, and described body extends the stress cone formed in horn-like structure towards described connecting portion Portion, described stress tapering is embedded in described connecting portion, described stress tapering include first, second, 3rd and the 4th, the inner side of described body extend towards described connecting portion and expand outwardly formation curved First of structure, described first is continued to extend and expand outwardly the curved structure of formation towards described connecting portion Second, described second outside extended after a section towards described body towards described connecting portion is bent to form The 3rd of curved structure, described first, second and the 3rd be embedded in described connecting portion, institute State the 4th formed in horizontal structure that extend that the 3rd outside towards described body is level, described the Four pass described connecting portion.

Compared with prior art, due to GIS terminal insulation and sealing structure of the present utility model, have in loudspeaker The stress tapering of shape structure, and this stress tapering also include three sections all in arc structure first, second, 3rd and in horizontal structure the 4th, wherein first, second, the 3rd is all embedded in insulation In glue-line is the connecting portion of column structure, the 4th passes connecting portion right with the outside of body in level Connecing, the docking section that insulation glue-line is relative with connecting portion simultaneously is frustum structure；Make stress tapering and insulating cement Stress electric field produced by the cable that can effectively will arrange in it of layer is divided equally and is distributed, thus effectively avoids Cable excessive heating and breakdown, it is to avoid security incident caused by stress non-uniform electric, Simple in construction and practical, should be widely promoted and use.

Accompanying drawing explanation

Fig. 1 is the schematic diagram of GIS terminal insulation and sealing structure of the present utility model.

Detailed description of the invention

With reference now to accompanying drawing, describing embodiment of the present utility model, element numbers similar in accompanying drawing represents similar Element.

As it is shown in figure 1, this utility model provides a kind of GIS terminal insulation and sealing structure 100, including all in The insulation glue-line 10 of hollow structure and conductive adhesive layer 20, one end of described insulation glue-line 10 be frustum structure also Forming docking section 11, the other end of described insulation glue-line 10 is column structure and forms connecting portion 12, described Conductive adhesive layer 20 includes body 21, and described body 21 extends towards described connecting portion 12 and formed in horn-like The stress tapering 22 of structure, described stress tapering 22 is embedded in described connecting portion 12, described stress tapering 22 include first 221, second the 222, the 3rd 223 and the 4th 224, described body 21 Inner side 211 extends towards described connecting portion 12 and expands outwardly and forms first 221 of curved structure, described Continue to extend towards described connecting portion 12 and expand outwardly second 222 of the curved structure of formation for first 221, Described second 222 extend one section towards described connecting portion 12 after bend towards the outside 212 of described body 21 Form the 3rd 223 of curved structure, described first 221, second 222 and the 3rd 223 embedded In described connecting portion 12, described 3rd 223 outside 212 the prolonging in level towards described body 21 Stretching the 4th 224 formed in horizontal structure, described 4th 224 passes described connecting portion 12；Due to this The GIS terminal insulation and sealing structure of utility model, has the stress tapering 22 in horn-like structure, and should Power tapering 22 also include three sections all in arc structure first 221, second the 222, the 3rd 223 and In horizontal structure the 4th 224, wherein first 221, second the 222, the 3rd 223 the most embedded In the insulation glue-line 10 connecting portion 12 in column structure, the 4th 224 passes connecting portion 12 in level And dock with the outside 212 of body 21, the docking section 11 that insulation glue-line 10 is relative with connecting portion 12 simultaneously In frustum structure；The cable arranged in it can effectively be produced by stress tapering 22 with insulation glue-line 10 Raw stress electric field is divided equally and is distributed, thus effectively avoids cable excessive heating and breakdown, it is to avoid Security incident caused by stress non-uniform electric, simple in construction and practical, it is worth extensively pushing away Wide and use.

In order to further describe in detail, this utility model provides following parameter, absolutely for 220KV transmission of electricity The frustum structure of the docking section 11 of edge glue-line 10 was gone to the bottom a diameter of 130mm, a diameter of 244.79mm in the upper end, On it, end diameter is also the diameter of column structure of the connecting portion 12 of insulation glue-line 10, insulation glue-line 10 and leading Electricity glue-line 20 the through hole that hollow structure is diameter 80mm, the side of the frustum structure of docking section 11 with wherein The angle of heart line is 16 °, a diameter of 110mm in outside 212 of the body 21 of conductive adhesive layer 20, inner side 211 a diameter of 80mm, the 4th 224 total lengths in stress tapering 22 are 83.32mm, wherein embed connecting portion The a length of 78.88mm of 12, pass a length of 4.44mm of connecting portion 12；Above parameter is only the application pin The embodiment that 220KV transmission of electricity is provided；The technical scheme that those skilled in the art provide in the application Premise, according to the demand of practical situation, it is not necessary to any performing creative labour can be made and meet demand Product size, no longer describes in detail at this.

Separately, the concrete structure of the GIS terminal involved by this utility model and operation principle, it is this area general Known to logical technical staff, no longer it is described in detail at this.

Above disclosed only preferred embodiment of the present utility model, can not limit this with this certainly The interest field of utility model, the equivalent variations therefore made according to this utility model claim, still belong to The scope that this utility model is contained.

Claims (1)

1. a GIS terminal insulation and sealing structure, it is characterised in that: include the insulating cement all in hollow structure Layer and conductive adhesive layer, one end of described insulation glue-line is frustum structure and forms docking section, described insulation glue-line The other end be column structure and form connecting portion, described conductive adhesive layer includes body, described body court Described connecting portion extends the stress tapering formed in horn-like structure, and described stress tapering is embedded in described connection In portion, described stress tapering includes first, second, the 3rd and the 4th, described body interior Side extends and expands outwardly first of the curved structure of formation towards described connecting portion, and described first is continued court Described connecting portion extends and expands outwardly and forms second of curved structure, described second towards described connection Portion extends after one section the outside towards described body and is bent to form the 3rd of curved structure, described first, Second and the 3rd is embedded in described connecting portion, and described 3rd outside towards described body is level Extend and form in horizontal structure the 4th, described 4th passes described connecting portion.