RU2523431C1 - Trolley-type device of power transmission line protection from birds - Google Patents

Abstract

FIELD: electricity.

SUBSTANCE: device includes plate 1 out of flexible dielectric material in the cross form with four perpendicular shortened beams 2, 3, 4, symmetric against an axis passing through two opposite beams 3, 4, one of which is shorter and thinner than the other. Plate 1 features at least ten orifices 5, 6, four of which are made in beam 3, located in two pairs adjoining its sides, and six other orifices are adjoining protruding angles of other beams 2, 4. In addition, device includes dielectric fixation elements 10 for plate 1, passing through each pair of orifices 5, 6 opposing each other when the plate 1 is folded by the said symmetry axis.

EFFECT: device range for protection of birds against electric shock extended with a trolley-type device of unified design for installation on suspended devices of various designs, with reliable attachment not requiring special fixtures on bearing elements, preventing slipping and rotation during operation by wind or other dynamic loads, easy to dismount and simple to produce and install.

6 cl, 5 dwg

Description

The invention relates to the field of electrical equipment, and in particular to contact-type bird protection devices for power lines that are mounted on top of tension clamps used to fasten wires, mainly on suspended insulators of power line anchor supports that contact metal parts with exposed wires, as a result whereby the tension clamps are energized, due to which birds sitting on them can be shocked. The devices can not only reduce the likelihood of death of birds, but also reduce operating costs caused by contamination of birds tension clamps.

By means of a contact-type bird protection device for power lines, wedge-shaped thrust clamps, jammed tension clamps, bolt tension clamps, and other power line elements can be isolated to which, in particular, the wires of power lines are attached.

A device for protecting contact-type birds for power lines is intended for the electrical insulation of tension clamps of wires at the sites of their attachment to suspension insulators of supports, which is made in the form of a U-shaped casing made of rigid dielectric material, including a wide straight section, rounded from above, in the cavity of which a tension clamp is located, extending from it towards the stretched wire, a cone-shaped section ending in a narrowed, rectilinear section in the cavity of the cat There is a stretched wire. On the other side of the wide straight section, the casing has a cone-shaped extension, which is located hollow on the edge of the suspension insulator. Two pairs of holes are made in the casing along the edges of the wide straight section located at the bottom opposite each other, through which two rod fasteners are passed, which ensure the casing is secured (EP 2366286 A1, IPC A01M 29/32, 2011).

The known solution can be used to a limited extent for the electrical insulation of tension clamps of various designs, since the casing is rigid and the internal volume is unchanged. In cases where the casing is mounted on a tension clamp that will not be tightly covered by it, or in the case where the rod fasteners do not abut against the tension clamp elements, under the influence of wind or other dynamic loading, the casing can slide from the clamp in the direction of the tensioned wire and / or turn with the open part up, which becomes available for bird landing, contact of birds with energized elements. This can lead to cases of electric shock to the birds, to violations, as a result, in the functioning of the power line, which indicates the insufficient reliability of the known device.

The technical result of the present invention is to expand the arsenal of means for protecting birds from electric shock by a contact type device, the design of which is unified for mounting on tensioners of various designs, is securely fixed to them, without requiring special fastenings on the elements on which it is installed slides and does not rotate during operation under the influence of wind or other dynamic loads, is easily dismantled, differs in simplicity of manufacture and installation.

This technical result provides a contact type bird protection device for power lines, which is characterized by the presence of:

- made of a dielectric flexible material of the plate, cross-shaped in plan view with four shortened beams orthogonal to each other, symmetrical about an axis passing along the middle of two rays located on opposite sides, one of which is longer and longer than the other, while in the plate at least ten holes, four of which are made in two pairs in a beam that is longer and longer than the opposite, adjacent to the lateral sides of this beam, and the other six flax adjacent to the protruding corners of the remaining rays;

- plate fastening elements made of dielectric material for passing through each pair of holes located opposite each other when the plate is folded along the mentioned axis of symmetry.

In the best embodiment of the invention, the fastening elements of the plate are made in the form of clamps from a flexible thermoplastic polymeric material.

Each clamp can be made in the form of an elongated part, on one end of which there is a latch with a hole, and on the side of the second end there is a section with fixing elements, while the latch and fixing elements are made with the possibility of passing the second end of the clamp through the hole of the latch and fixing it in a number of provisions along the length of the specified section, preventing spontaneous movement in the direction of removal of the second end of the clamp from the hole of the latch.

The plate can be made either of a polymeric material, or of silicone rubber, or of rubber, or of a polymer-based material.

The holes in the plate in the best embodiment are reinforced with through tubular or piston rivets installed therein.

The protruding and internal corners of the plate in the plan are preferably rounded, and the radii of rounding of the inner corners are greater than the radii of rounding of the protruding corners.

The possibility of carrying out the invention is confirmed by a specific example of a contact-type bird protection device for power line poles, which is illustrated by graphic materials.

Figure 1 shows a plate of a contact type bird protection device for power lines, a plan view.

Figure 2 and figure 3 shows a contact type bird protection device, a wiring diagram for installing a wedged tension clamp, a front view, longitudinally to the power line wire, and a side view, transverse to the wire, respectively. Figure 3 shows the location of only one clamp.

Figure 4 presents a photograph of a plate of a contact-type bird protection device for power lines, a plan view, a jammed tension clip is placed on the plate.

Figure 5 presents a photograph of a contact-type bird protection device for power lines with clamped parts of the plate, front view, longitudinally to the power line wire.

A contact type bird protection device for power transmission line supports comprises a plate 1 (Fig. 1), cross-shaped in plan view with four shortened beams 2, 3, 4 orthogonal to one another. The shape of the plate 1 is symmetrical about an axis running along the middle of two opposite sides of rays 3 and 4, one of which (3) is narrower and longer than the second (4).

Ten holes 5, 6 are made in the plate 1. Of these, four holes 5 are made in two pairs in a beam 3, which is longer and longer than the opposite (4), located adjacent to the lateral sides of this beam 3. The other six holes 6 are made adjacent to the protruding corners 7 of the remaining rays 2, 3.

The protruding corners 7 and the inner corners 8 of the plate 1 are rounded in plan, with the radii of rounding of the inner corners 8 greater than the radii of rounding of the protruding corners 7.

The plate 1 is made of silicone rubber, which is a dielectric flexible material. For the manufacture of plate 1, other flexible dielectric materials can be used: polymeric, for example polyethylene, rubbers having dielectric properties, or polymer-based materials that are flexible and have dielectric properties with an electric strength of at least 15 kV / mm.

The holes 5, 6 in the plate 1 are reinforced to prevent tearing of the material of the plate 1 through-hole piston rivets 9 installed in them (clearly shown in the photographs in Figs. 4, 5). For reinforcement (the options are not illustrated in the drawings), through tubular rivets can be used, including with washers placed under the flare ends, or holes 5, 6 can be reinforced with other known means, for example, by thickening the material in the areas where the holes 5, 6, which can have both a round shape and another, for example oval, square, rectangular. Through tubular rivets of thermoplastic material can be used, fused to fasten from one or both ends.

Through each pair of holes 5, 6, located opposite each other when the plate 1 is folded along the mentioned axis of symmetry, fasteners pass in the form of clamps 10 (Figs. 2, 3, 5). Holes 5, 6, located opposite to the indicated axis of symmetry, are combined in pairs not only with the aforementioned literal folding of the plate 1, which characterizes only the constructive condition for the shape of the plate and the location of the holes made in it 5, 6, but also when the plate 1 is bent around some geometric axis parallel to its axis of symmetry, with the formation of the internal cavity 11 (figure 3) and alignment of the rays 2. The number of clamps 10 (fasteners) corresponds to the number of pairs of holes 5, 6 in the plate 1.

Clamps 10 are made of polyethylene. For the manufacture of clamps 10, any flexible material may be used, but it is preferable to use clamps made of thermoplastic polymeric materials, the group of which includes polyethylene.

Each clamp 10 is made in the form of an elongated part, on one end of which there is a latch 12 with a hole (not visible in the drawings), and on the side of the second end 13, a section with fixing elements (not shown in the drawings). Each clamp 10 is actually made in the form of a classic coupling clamp.

The latch 12 and the locking elements are configured to pass the second end 13 of the clamp 10 and its fastening in a number of positions along the length of the specified section, preventing the spontaneous movement in the direction of the output of the second end 13 of the clamp 10 from the bore of the clamp 12. Designs of such products are widely known . The hole in the retainer (examples of the collar 10 are not illustrated in the drawings) may have the shape of a loop with widened and narrow parts, and at the second end of the clamp a series of round bulges that pass through the expanded part of the retainer hole and are fixed by moving the end to the narrow part. At the second end of the clamp, thickenings can be made passing through the lock hole with a force that does not develop spontaneously, so that the second end of the clamp does not itself pop out of the lock hole. Such thickenings can be round, wedge-shaped on one or two opposite sides of the second end of the clamp, or conical, the geometric vertices of the cones of which are oriented in the direction of tightening the clamp.

Instead of clamps 10, fasteners of a different design can be used, for example, screws with nuts made of rigid polymeric dielectric material, which are passed through pairs of holes 5, 6 (the embodiment is not illustrated by drawings).

When mounting a contact type bird protection device made in accordance with the invention, a plate 1 with an approximate location of its axis of symmetry passing along the middle of two rays 3 and 4 located on the opposite sides is inserted onto the installed jamming tension clamp 14 (FIGS. 2, 3, 4), from above along the tension clamp 14. In the pairs of holes 5, 6 located opposite each other, clamps 10 are inserted, which are tightened. In this case, the plate 1 tightly covers the tension clamp 14, which is located in the formed cavity 11 inside the curved plate 1, providing electrical insulation of the tension clamp 14 and thereby preventing electric shock to the birds. The elements of the tension clamp 14, located between the beams 2 of the plate 1, pulling the plate 1 along the edges of the beams 3, 4, prevent sliding, for example, under the influence of the wind of the plate 1 from the tension clamp 14 or its rotation (approximately around the axis along the tensioned wire 15). Even in the case of turning the plate 1, the electrical insulation of the tension clamp 14 is not violated, since the plate 1 contacts in the extreme parts of the beams 2. The tensioned wire 15 (Fig. 2) exits from the side of the beam 3 of the plate 1, and the free 16 - from the side of the beam 4 of the plate 1. Clamps 10 make it possible to vary the degree of their tightening, which ensures the unification of the contact-type bird protection device for the electrical insulation of tension clamps of various designs (wedge-shaped, wedged, bolted), of different sizes. Different beam widths 3, 4 allow the installer to easily navigate in the direction of installation of the contact-type bird protection device for power lines.

All parts made in accordance with patent claims of the invention are manufactured by known technologies. The example embodiment of the invention is not exhaustive. Other embodiments of the contact-type bird protection device of the contact type for power lines corresponding to the invention are possible.

Claims (6)

1. Contact type bird protection device for power lines, characterized by the presence of
made of a dielectric flexible material of the plate, cross-shaped in shape with four shortened beams orthogonal to each other, symmetrical about the axis passing along the middle of two rays located on opposite sides, one of which is longer and longer than the other, at least at least ten holes, four of which are made in two pairs in a beam that is longer and longer than the opposite, adjacent to the lateral sides of this beam, and the remaining six are made neny adjacent to the protruding corners of the remaining rays,
and plate fastening elements made of dielectric material for passing through each pair of holes located opposite each other when the plate is folded along said axis of symmetry. 2. The device according to claim 1, characterized in that the fastening elements of the plate are made in the form of clamps from a flexible thermoplastic polymer material. 3. The device according to claim 2, characterized in that each clamp is made in the form of an elongated part, on one end of which there is a latch with a hole, and on the side of the second end is a section with locking elements, while the latch and fixing elements are made with the possibility of passage the second end of the clamp through the hole of the clamp and its fastening in a number of positions along the length of the specified section, preventing spontaneous movement in the direction of removal of the second end of the clamp from the hole of the clamp. 4. The device according to claim 3, characterized in that the plate is made either of a polymeric material, or of silicone rubber, or of rubber, or of a polymer-based material. 5. The device according to any one of claims 1 to 4, characterized in that the holes in the plate are reinforced with through-hole tubular or piston rivets installed in them. 6. The device according to claim 5, characterized in that the protruding and internal corners of the plate are rounded in plan, and the radii of rounding of the inner corners are greater than the radii of rounding of the protruding corners.

Images