CN101752043B

CN101752043B - Composite post insulator

Info

Publication number: CN101752043B
Application number: CN 201010110599
Authority: CN
Inventors: 唐苑雯
Original assignee: Individual
Current assignee: QINGZHOU LIWANG ELECTRIC POWER TECHNOLOGY Co Ltd
Priority date: 2010-02-08
Filing date: 2010-02-08
Publication date: 2012-12-19
Anticipated expiration: 2030-02-08
Also published as: CN101752043A

Abstract

The invention discloses a composite post insulator, which is provided with a lower flange and an upper flange, wherein an epoxy resin glass fiber core rod is fixed between the upper flange and the lower flange, and a composite silicon rubber umbrella skirt is arranged outside the epoxy resin glass fiber core rod. The composite post insulator is characterized in that the epoxy resin glass fiber core rod is at least provided with one U-shaped hole, and a U-shaped bolt fixed on the lower flange through a nut is arranged in the U-shaped hole. The composite post insulator has the advantages that the post insulator with the structure has strong rigidity and tenacity and can satisfy all application occasions at present under the action of the epoxy resin glass fiber core rod and the U-shaped bolt. Particularly, when rigid and flexible U-shaped bolts are adopted, not only the rigidity of the post insulator is greatly improved, but also the bending strength of the post insulator is also greatly improved. According to limited experiments, under the premise that the grade of the insulation strength is not changed, the rigidity of the post insulator is improved by 50 to 100 percent, and the bending strength of the post insulator is improved by 30 to 80 percent.

Description

A kind of composite post insulator

Technical field

The invention belongs to the insulator that uses in the electric power power transmission and transformation system, definite saying is a kind of composite post insulator.

Background technology

The insulator that uses in the high-low pressure power transmission and transformation system at present, more advanced is silicon rubber compound insulator, inside is pottery or glass, the appearance composite silicone rubber.But, mainly be to bear crooked active force, yet the bend resistance intensity of pottery, glass is lower for post insulator.Therefore there is the people to adopt epoxy resin fiberglass plug and silicon rubber composite material as post insulator, though improved resistant to bending ability; Because the characteristic of himself; Flexibility is bigger, is receiving than the macrobending masterpiece time spent, produces distortion; Particularly use, sometimes even can produce the fault of switch failure as the switch post insulator.In order to improve the reliability of post insulator, inventor of the present invention has done research in earnest, has proposed goal of the invention of the present invention.

Summary of the invention

Goal of the invention of the present invention puts forward in order to overcome the low deficiency of present post insulator bending strength.A kind of composite post insulator promptly is provided.

Technical solution of the present invention is to realize like this; This kind composite post insulator; Having lower flange and upper flange, is the epoxy resin fiberglass plug that is fixed between the lower flange in the middle of last lower flange, is the composite silicone rubber full skirt in the outside of epoxy resin fiberglass plug; It is characterized in that on the epoxy resin fiberglass plug, having at least a U type hole, in this U type hole, have and be fixed on the U-bolt on the lower flange through nut.U-bolt can be the steel wire rope that two ends have connecting thread.On the epoxy resin fiberglass plug, can have two space crossed U type holes, cooperate with two U-bolts respectively.A U-bolt is the rigidity bolt especially, and another U-bolt is flexible bolt.

Useful technique effect of the present invention is: the post insulator of this structure has stronger rigidity and toughness under the effect of epoxy resin fiberglass plug and U-bolt, can satisfy all application scenarios at present.When having adopted after rigidity and the flexible U-bolt, make post insulator not only on rigidity, have very big raising, and on bending strength, also improve a lot especially.According to limited experiment, under the constant prerequisite of dielectric strength grade, rigidity improves 50%-100%, and bending strength improves 30%-80%.

Description of drawings

Accompanying drawing 1 is a structure principal section schematic views of the present invention; Accompanying drawing 2 is upward views of accompanying drawing 1; The position and the nut type of attachment of U-bolt have mainly been illustrated; Accompanying drawing 3 shows and is fixed on the installation site on the lower flange after three groups of U-bolts intersect, and accompanying drawing 4 shows and is fixed on the installation site on the lower flange after four groups of U-bolts intersect.Accompanying drawing 5 shows the structural representation that U-bolt and epoxy resin fiberglass plug are cured as one.Sequence number in the accompanying drawings is described as: 1, lower flange, 2, upper flange, 3, the composite silicone rubber full skirt, 4, the epoxy resin fiberglass plug, 5,6, U-bolt, 7, nut, 8, U type hole.

Embodiment

Below in conjunction with the embodiment that provides in the accompanying drawing, structure of the present invention and use are elaborated.

Embodiment 1 is with reference to accompanying drawing; This kind composite post insulator; Having lower flange [1] and upper flange [2], is the epoxy resin fiberglass plug [4] that is fixed between the lower flange in the middle of last lower flange, is composite silicone rubber full skirt [3] in the outside of epoxy resin fiberglass plug [4]; Its distinguishing characteristics is on epoxy resin fiberglass plug [4], to have a U type hole [8], in this U type hole, has through nut [7] to be fixed on the U-bolt on the lower flange [1].

Embodiment 2 structures are identical with embodiment 1 with parts, and its distinguishing characteristics is that said U-bolt is the steel wire rope that two ends have connecting thread.

Embodiment 3 structures are identical with

embodiment

1 or 2 with parts, and its distinguishing characteristics is on the epoxy resin fiberglass plug, to have space crossed two U type holes [8], cooperates with U-bolt [5] and [6] respectively.

Embodiment 4 structures are identical with

embodiment

2 or 3 with parts, and its distinguishing characteristics is that said U-bolt [5] is the rigidity bolt, and U-bolt [6] is flexible bolt, and perhaps U-bolt [5] is flexible bolt, and U-bolt [6] is the rigidity bolt.

Embodiment 5 is referring to accompanying drawing 3, and structure is identical with embodiment 1 with parts, and its distinguishing characteristics is on the epoxy resin fiberglass plug, to have space crossed three U type holes [8], cooperates with U-bolt [5] and [6] respectively.Such structure can be selected two groups of rigidity bolts and one group of flexible bolt; Perhaps select two groups of flexible bolts and one group of rigidity bolt; To be fit to the needs that the different directions buckling strength changes, perhaps all be the rigidity bolt, to adapt to needs than major diameter and buckling strength installation.

Embodiment 6 is referring to accompanying drawing 4, and structure is identical with embodiment 1 with parts, and its distinguishing characteristics is on the epoxy resin fiberglass plug, to have space crossed four U type holes [8], cooperates with U-bolt [5] and [6] respectively.Such structure can be selected two groups of rigidity bolts and two groups of flexible bolts of group; Perhaps select three groups of rigidity bolts and one group of flexible bolt; To be fit to the needs that the different directions buckling strength changes, perhaps all be the rigidity bolt, to adapt to the needs that larger diameter and buckling strength are installed.Because the quantity of bolt has increased, its theoretical bending strength has also increased, therefore in some occasions; For example use as pure post insulator, four groups can all be adopted flexible U-bolt, also can select the structure of three groups of flexible bolts and one group of rigidity bolt; Simple, easy for installation flexibly.The ability of its bend resistance improves greatly.

Embodiment 7 is referring to accompanying drawing 5, and U-bolt and epoxy resin fiberglass plug are cured as the structure of one, promptly when making plug, just U-bolt is placed the mould one-shot forming in advance, and the integraty of plug and U-bolt is better, and strength and stiffness are higher.

Especially, after the structure that has adopted rigidity and flexible two kinds of U-bolts, greatly improved the rigidity and the bending strength of post insulator.When using as the switch post insulator, the switch of having avoided the distortion owing to stressed generation to cause can't closed fault.

When not considering manufacturing and structural practical factor, the quantity in U type hole can suitably increase, and this has conspicuous practical significance for the king-sized post insulator of diameter.That is to say that the U type hole of the intersection on the post insulator plug that in the higher power transmission and transformation line of electric pressure, uses can be more than 4, thereby no longer be confined to the structure that provides among accompanying drawing and the embodiment.

Correspondingly, this structure also can be passed through the post insulator that any special design just can successfully be applied to glass, ceramic plug.

Claims

1. composite post insulator; Have lower flange [1] and upper flange [2]; In the middle of last lower flange is the epoxy resin fiberglass plug [4] that is fixed between the lower flange; In the outside of epoxy resin fiberglass plug [4] is composite silicone rubber full skirt [3], on epoxy resin fiberglass plug [4], has a U type hole [8] at least, in this U type hole, has through nut [7] to be fixed on the U-bolt on the lower flange [1]; It is characterized in that on the epoxy resin fiberglass plug, having space crossed two U type holes [8], cooperate with first U-bolt [5] and second U-bolt [6] respectively.

2. according to the described a kind of composite post insulator of claim 1; It is characterized in that said first U-bolt [5] is the rigidity bolt; Second U-bolt [6] is flexible bolt, and perhaps first U-bolt [5] is flexible bolt, and second U-bolt [6] is the rigidity bolt.