CN205304157U

CN205304157U - Dry type high -pressure wall bushing

Info

Publication number: CN205304157U
Application number: CN201520759264.5U
Authority: CN
Inventors: 王钰; 陈倩
Original assignee: Beijing Nobbel Electric TECH Develop Co Ltd
Current assignee: Beijing Nobbel Electric TECH Develop Co Ltd
Priority date: 2015-09-29
Filing date: 2015-09-29
Publication date: 2016-06-08
Anticipated expiration: 2025-09-29

Abstract

The utility model provides a novel high -pressure electric capacity jacket pipe, includes that the current -carrying body, capacitanc insulation, oversheath, flange, full skirt and binding post constitute. Capacitanc additive mechanical atress layer in insulating wherein, reinforcing sheathed tube mechanical strength, the material of oversheath can adopt shrinkage pipe, pyrocondensation pipe or glass cloth epoxy's material, can guarantee the stability of sleeve pipe performance in the time of reinforcing mechanical strength, and it has simple insulating fat to change compound material into to play the material of playing the bonding effect in the installation of main supporting role's flange and major insulation for its bonding is more firm, and the structure is more reliable and more stable.

Description

A kind of dry-high voltage through-wall sleeve

Technical field

This utility model belongs to High-Voltage Electrical Appliances field, it is adaptable to the outlet casing tube of the various equipment of 10��550kV electric pressure and the wall bushing of various transformer station.

Background technology

There is the wall bushing of sleeve pipe and transformer station in the various equipment of the existing electric pressure being applicable to 10��550kV, and its insulation system has the solid materials such as electroceramics, epoxy resin, teflin tape, fiberglass. At present, in power system, the bushing of style mainly has following three kinds of forms:

One is pure porcelain casing tube, applies in general under low voltage, such as 10kV��35kv. Its major insulation is by electroceramics or epoxy resin, or other solid materials are constituted, owing to being absent from reasonably all laminated structures, its Potential distribution is caused to be difficult to uniformly, easily in edge, the boundary of a piece of land, or the transition position of mounting flange and major insulation causes damage because of corona or shelf depreciation.

Another kind is major insulation is exactly the sleeve pipe of capacitive structure, the isolation high pressure that this kind of structure can be good, it is possible to be applied in higher voltage. The structure of the current sleeve pipe applying this kind of condenser type insulation system core body is mainly condenser type insulation and is produced on carrying object and constitutes major insulation, oversheath is done in the surface heat-shrink tube of major insulation, cold shrink tube or glass fiber material epoxy resin-impregnated, it is fixedly arranged in the middle of mounting flange at sleeve pipe, insulation position, both sides is bonding or suppresses silicon rubber umbrella skirt, and carrying object now has the requirement of through-current capability and mechanical strength simultaneously. If the material of this kind of structure condenser type insulation or oversheath is not as played certain mechanical strength, it is easy to produce the problem that mechanical strength is inadequate, additionally most of producer that builds of flange all adopts simple insulation fat to build now, because flange plays main support effect, so being easy to produce the phenomenons such as cracking, reliability is poor.

Utility model content

The purpose of this utility model is to provide the high-voltage wall bushing that a kind of insulation system is more reasonable, performance is more stable.

According to the novel high-pressure condenser bushing that this utility model provides, including carrying object, condenser type insulation, oversheath, mounting flange, full skirt and binding post, it is characterized in that: the insulation of described condenser type covers film material for oils and fats or glue soaks the capacitance plate composition that fiber coordinates conduction or semiconductive material to make in described carrying object surface, described oversheath is that cold shrink tube, heat-shrink tube or glass fiber material epoxy resin-impregnated coiling form, and the major insulation that described flange and described carrying object, condenser type insulation and oversheath form is undertaken building assembling by coupling agent and insulation fat.

Described oversheath is that cold shrink tube, heat-shrink tube or glass fiber material epoxy resin-impregnated coiling form, and wherein glass fiber material epoxy resin-impregnated is thick around restriction 5��15mm. There is high mechanical properties, main mechanical force can be undertaken.

The one or more mechanically stressed layers of making can be added in the middle of residing condenser type insulation, and near inside and outside two capacitance plate isoelectric levels of mechanically stressed layer.

Described mechanically stressed layer is to be wound around by glass fiber material epoxy resin-impregnated to constitute between condenser type insulation.

The insulation of described condenser type is covered the capacitance plate that with film material or glue leaching fiber, conduction or semiconductive material make in described carrying object surface and is formed from oils and fats, in wherein, the distribution of insulation capacitance plate is to be computed according to theoretical calculation formula and computational analysis optimization forms, accomplish that radially, axially field intensity is rationally uniform, longer service life.

Described flange is bonding by insulation fat and the major insulation being made up of described carrying object, condenser type insulation and oversheath, adds coupling agent so that it is bonding tightr, it is difficult to cracking in bonding process, more safe and reliable.

This utility model provide novel high-pressure condenser bushing compare with like product have the advantage that 1 be this utility model pass through condenser type insulate between add one or more mechanically stressed layer, update the material of oversheath, the effective mechanical strength increasing sleeve pipe. Wherein adopt the pattern of glass fiber material epoxy resin-impregnated, sleeve pipe will not produce space, it is not required that fill other materials so that the performance of sleeve pipe is more stable. And major mechanical stress acts on major insulation and oversheath in this way so that major insulation is relatively reliable, stable. 2 is the novel high-pressure condenser bushing that this utility model provides, between flange and major insulation when building in the insulation fat play primary bond effect add coupling agent, making it bonding more firm so that the supporting role of flange is more firm, sleeve pipe is in use relatively reliable.

Accompanying drawing explanation

Accompanying drawing is this utility model structural representation, in figure, and 1-carrying object, 2-condenser type insulation 3-oversheath, 4-full skirt, 5-flange, 6-binding post.

Detailed description of the invention

With reference to accompanying drawing: the inside be carrying object 1, described condenser type insulate and 2 is wound on described carrying object 1; Described oversheath 3 is by cold shrink tube, heat-shrink tube tight collapse in condenser type insulation 2, or being wound in condenser type insulation 2 by glass fiber material epoxy resin-impregnated forms; Described flange 5 is arranged on sleeve pipe outlet, by fat and the coupling agent compact siro spinning technology of insulating; Described full skirt 4 is directly set with and is bonded on oversheath, or direct sulfidization molding on oversheath; Affiliated binding post 6 is arranged on the two ends of carrying object.

Carrying object 1 therein can by metal tube, rod or penetrate the metal tube of carrying object and form.

One or more mechanically stressed layer can be added in the middle of condenser type therein insulation 2, and near two capacitance plate isoelectric levels of mechanically stressed layer. This mechanically stressed layer is to form with the tight coiling of glass fiber material epoxy resin-impregnated in described condenser type insulate.

Oversheath 3 therein is closely to be wound on the insulation of described condenser type by cold shrink tube, heat-shrink tube or glass fiber material epoxy resin-impregnated to form, have high mechanical properties, undertake main mechanical force.

Full skirt 4 therein is made up of silastic material, it is possible to directly suit is bonded on oversheath, it is also possible to directly vulcanizing mold is pressed on oversheath.

Sleeve pipe is played main support effect by flange 5 therein, is closely cast in major insulation by insulation fat and coupling agent.

Claims

1. a novel high-pressure condenser bushing, including carrying object, condenser type insulation, oversheath, mounting flange, full skirt and binding post, it is characterized in that: the insulation of described condenser type covers film material for oils and fats or glue soaks the capacitance plate composition that fiber coordinates conduction or semiconductive material to make in described carrying object surface, described oversheath is that cold shrink tube, heat-shrink tube or glass fiber material epoxy resin-impregnated coiling form, and described flange is undertaken building assembling by coupling agent and insulation fat with the major insulation being made up of described carrying object, the insulation of described condenser type and described oversheath.

2. novel high-pressure condenser bushing according to claim 1, it is characterised in that: what the insulation of described condenser type adopted is capacitance plate series connection partial-pressure structure.

3. novel high-pressure condenser bushing according to claim 2, it is characterised in that: described oversheath is closely wound on the insulation of described condenser type by cold shrink tube, heat-shrink tube or glass fiber material epoxy resin-impregnated and forms.

4. novel high-pressure condenser bushing according to claim 1, it is characterised in that: add one or more mechanically stressed layer between the insulation of described condenser type, and near inside and outside two capacitance plate isoelectric levels of mechanically stressed layer.

5. novel high-pressure condenser bushing according to claim 4, it is characterised in that: described mechanically stressed layer is to be made up of glass fiber material epoxy resin-impregnated compact winding.

6. novel high-pressure condenser bushing according to claim 1, it is characterised in that: described flange is cast on major insulation by the fat that insulate, and before building, described flange coupling agent is carried out pretreatment.

7. novel high-pressure condenser bushing according to claim 1, it is characterised in that: described full skirt be closely suit and bonding on the outer jacket, or direct sulfidization molding on the outer jacket.