RU1815675C - Gear for protection of insulation of aerial electric power lines and power substations against fouling and against electric arc-over - Google Patents

Abstract

Usage: overhead power lines and electrical substations. SUMMARY OF THE INVENTION: The protection device is made in the form of a conical umbrella, the diameter of which exceeds the diameter of the insulator plate. The umbrella has a taper, excluding the retention of birds on the surface. It can be made composite of sheet metal, protected from corrosion. The umbrella can be made in the form of a truncated cone, the smaller base of which is intended for landing birds in the absence of danger to the life of birds. 6. s.p. f-ly, 4 ill.

Description

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The invention relates to electrical engineering, namely to overhead power transmission lines and to open electrical substations with voltages above 1000 V. and can be used when the insulators are heavily contaminated by bird droppings, and also on which birds die from electric shock current during their landing, take-off or being on insulators.

An object of the invention is an apparatus for protecting the insulation of overhead power lines and electrical substations from pollution; prevention of the overlap of the daisy chain of supporting insulators by an electric arc along the stream of droppings of large birds located above the daisy chain; death prevention

large birds from electric shock during landing, take-off, and being on pin insulators supporting the lower wires of power lines; the creation of special places for birds to sit above the pin insulators supporting the upper wires of the power lines, where there is no danger and for birds to approach parts that are under different electric potentials and therefore there is no danger of electric shock to the birds.

In FIG. 1 shows a device for protection against pollution of the supporting insulators 1, made in the form of a cone 2, mounted above the insulator 1 under the cross beam 4 using fasteners. 3, to which the insulator 1 is suspended.

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cone attachment pads are determined by the size of the attachment devices.

The conical umbrella is made of sheet metal. Its installation according to FIG. 1 is the most preferred and, for short strings, sufficient protection against pollution.

In FIG. 2 shows a device for protecting the insulator 1 in the form of a conical umbrella 2, mounted above the insulator above the crosshead 4 with the help of racks-legs 5 and attachment points 3. This variant of the umbrella and its fastening is applicable in cases where the design of the crosshead 4 does not allow make and fasten the umbrella of FIG. 1.

For unification in the manufacture, it is possible to make the cone of the umbrella the same as in FIG. 1, but it is also possible to make an umbrella in the form of a full cone (shown by a dotted line) with the same effect of protecting the insulating part of the insulator.

The umbrella is made of sheet metal.

In FIG. Figure 3 shows a device in the form of a cone umbrella 2, designed to protect the pin insulator 1 mounted on the pin 3. The umbrella is fixed to the head of the insulator 1 with the help of racks-legs 4 and a clamp 5.

When umbrellas are mounted on pin insulators supporting the lower wires of power lines, they are made of electrically insulating climate resistant materials of sufficient strength. In other cases, the umbrellas may be made of sheet metal.

When installing umbrellas on pin insulators supporting the upper or horizontally located wires of power lines, it is advisable to make umbrellas in the form of truncated cones (shown by dashed lines) to create platforms for landing birds. Such umbrellas are made of sheet metal.

FIG. 3 is useful for publication to illustrate the protection of pin insulators and the protection of large birds from electric shock.

In FIG. Figure 4 shows a device for protecting suspension insulators 1 assembled in long strings, in the form of a cone 2 with a cut off upper part, mounted on the head of the insulator with the help of springs (3).

When installing the device on the head of the upper insulator of the garland, it can be made of sheet metal; when installing on the insulators of the garland located below, the device is made of electrical insulating climate-resistant materials of the required strength. The hooking legs 3 are made of corrosion-free spring metal, which provides reliable long-term fastening

cone on the head of the insulator at all possible loads.

To install devices on a string of insulators 1 without disengagement, the cone 2 is detachable, connected in one

0 whole by detachable connections directly on the string.

In FIG. 4 shows the connection of parts of a dovetail type cone 2 by means of a connecting part 4.

5 FIG. 4, it is advisable to use it during publication to illustrate protection against pollution and from electric arc overlap of suspended insulators and daisies of them.

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Claims (7)

SUMMARY OF THE INVENTION 1. Device for protecting the insulation of overhead power lines and electrical substations from pollution and from 5 overlap by an electric arc, made in the form of an umbrella mounted above. insulator and having a diameter greater than the diameter of the insulating part of the insulator, characterized in that, in order to In order to effectively protect the insulators and prevent the death of birds from electric shock, the umbrella is made in the form of a cone with a taper, which prevents the birds from being kept on its outer surface. 5 2. Device pop. 1, characterized in that the generatrices of the cone of the umbrella are located at an angle of 35-45 ° to the base. 3. The device according to paragraphs. 1 and 2, characterized in that the umbrella is made of sheet metal, protected from corrosion. 4. The device according to paragraphs. 1 and 2, with the exception that the umbrella is made of electrically insulating climate-resistant material. 5 5. The device according to paragraphs. 1-4, characterized in that, in order to simplify its installation on the insulator strings without their uncoupling, the umbrella is made with at least one connector connected by a connecting element. 6. The device according to paragraphs. 1-5, characterized in that it is provided with fasteners made in the form of paws and a clamp and designed to connect the 5 umbrella with the cap of the hanging insulator, with the head of the pin insulator or with a traverse. 7. The device according to paragraphs. 1, 3, 4, and 6, all the same. that, in order to prevent the death of birds by providing them landing on pin insulators of power lines where there is no danger of electric shock to birds, the umbrella is made in the form of a truncated cone, the smaller base of which is intended for landing birds.