CN2232157Y - Equalizing rings - Google Patents

Abstract

The utility model relates to an equalizing ring, comprising a ring body and an anchoring device, wherein, the ring body of the equalizing ring is an opening-shaped ring body made by the aluminium material of aluminum alloy, overcoming the defects that the wall of the equalizing ring of the traditional steel tube is thin, easy to corrode through, etc. The equalizing ring has the advantages of corrosion resistance, no rust, ideal striking effect, short discharge time, easy installation, distinct equalizing effect, etc.

Description

A kind of grading ring

The utility model relates to a kind of annex that matches and use with post insulator, sleeve pipe, lightning arrester with circuit suspension type synthetic insulator and electric substation in the power transmission and transformation skin art field.

Be applied to the high-tension synthetic insulator of circuit and electric substation, because its good electromechanical properties and advantage such as convenient for installation and maintenance make its range of application more and more extensive.Compare with traditional porcelain insulator, the synthetic insulator direct-to-ground capacitance is less, so the voltage skewness, will cause internal field to concentrate like this, makes its premature aging, and flashover fault easily takes place.Yet load onto grading ring in its one or both ends; just can greatly improve the distribution of its electric field strength, also play the effect of a kind of " striking " simultaneously, the arc duration is shortened; discharge occurs between ring or ring and the metal termination, is not burnt in protection full skirt surface.And traditional grading ring adopts steel pipe or round steel, forms through bending, and surface heat is zinc-plated, and its deficiency is that under atmospheric environment and highfield effect surperficial zinc layer is corroded very soon, even causes tube wall by eating thrown and ineffective.

The purpose of this utility model is to provide a kind of corrosion-resistant, non-corrosive, long service life, and externally during flashover, striking is effective, imitates short cast aluminium grading ring of electricity time.

The technical solution of the utility model is by ring body, and fixture etc. are formed a grading ring.Its ring body is the cast aluminium ring body, to alleviate product weight, has corrosion-resistant under atmospheric environment, non-corrosive performance, and ring body of the present utility model is an opening ring body, and when external flashover took place, striking was effective, the electricity time is imitated in shortening.

Cast aluminium ring body of the present utility model is the ring body of casting of alloy aluminum material or die casting.Can be the ring body of circular rings body, oval ring body or random geometry.

Its ring body section of cast aluminium ring body of the present utility model is the inside C type of L type, opening.

Said fixture is for having one to adopt same material and cast holistic crossbeam with ring body on ring body, is equipped with one on the crossbeam in order to the fixing U-bolt of ring body.

Said fixture also can be anchor ear shape.

Fig. 1 is a C type grading ring structural representation for the ring body cross section.

Fig. 2 is the grading ring structural representation of L type for the ring body transversal profile.

Below in conjunction with accompanying drawing the utility model is described in further detail.

Among Fig. 1,1 ring body that forms for alloy aluminum material casting, the annular aspect of ring body leaves an osculum, make ring body 1 be the opening shape, the transversal profile of ring body 1 is the C type, and its opening is inside, ring body 1 is cast as holistic crossbeam 2, the cross section of crossbeam 2 is a rectangle, and the aperture of two symmetries is arranged on the crossbeam, and U bolt is contained on the ring body by aperture.The center of U-bolt is corresponding with the ring body center.3 is nut, and 4 is U type screw.

Among Fig. 2, opening shape cast aluminium ring body 5, the transversal profile of its ring body is the L type, and the crossbeam 6 on the ring body 5 is equipped with U-bolt 7 on the crossbeam 6, and U-bolt 7 centers are corresponding with the ring body center.U-bolt is in order to be fixed on grading ring on synthetic insulator and other power equipment.

The utility model is compared with traditional grading ring, has following advantage:

1. in light weight, to install simple and conveniently, outward appearance is good, and is corrosion-resistant under atmospheric environment, do not give birth to Rust, the life-span is long.

2. in the situation that does not strengthen entire outer diameter, do caliber very big, make and all press effect more For significantly.

3. when external flashover takes place, the striking better effects if, the effect electricity time is shorter.

Claims (5)

1, a kind of grading ring comprises ring body, fixture, it is characterized in that: ring body (1,5) is an opening shape cast aluminium ring body.

2,, it is characterized in that the shape of said cast aluminium ring body can be for circular, oval as claims 1 said grading ring.

3,, it is characterized in that said cast aluminium ring body section is the L type, the C shape that opening is inside as the said grading ring of claim 1.

4,, it is characterized in that said cast aluminium ring body is the ring body of alloy material casting, die casting as the said grading ring of claim 1.

5, as the said grading ring of claim 1, it is characterized in that said fixture for a crossbeam to be arranged on ring body, have one on the crossbeam in order to the fixing U bolt of ring body.

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