ES1069132U - Faunistic protector for electric air lines (Machine-translation by Google Translate, not legally binding) - Google Patents

Abstract

Faunal protector for overhead power lines, characterized by being constituted by a one-piece body, of plastic nature, which adopts a bivalve structure constituting a housing for the junction point between the electrical conductor cable and the fixing element of said cable to the corresponding chain of support insulators, said bivalve body also incorporating marginal and perforated fins, which in a closed situation contact each other, their orifices being left facing for the passage of screws, rivets or other fixing means that stabilize the protector in a closed situation, protector that has necks for entry and exit of the cable, sufficiently elongated depending on the respective sections of electric cable that you want to protect. (Machine-translation by Google Translate, not legally binding)

Description

Faunal protector for power lines Aerial

Object of the invention

The present invention relates to a protector intended for use in medium and high voltage overhead lines, in order to prevent birds of considerable size die electrocuted when perched on the wires or on the posts, as a result of simultaneous physical contact on both elements.

The object of the invention is to achieve a protector covering electrical conductive cables in a sufficient magnitude to prevent a bird perched on a pole or over a crosshead, contact the cable suffering an electric shock, and vice versa.

Background of the invention

As is known, in a high airline or medium voltage, the cables are isolated from the posts or turrets that they support them through chains of insulators, with the obvious purpose of breaking the electrical continuity between cable and pole, especially when it is concrete or nature metallic

Basically there are two types of fixing for said cables, one in which the insulator chains hang from the posts and support the cables by simple support of these last over the lower terminal element of the chain, and another in that the cable is firmly attached to the chain of insulators in its access to the post, so that the chain of insulators works at lateral traction and is complemented by a second chain of insulators, located at the exit of the pole, to which the cable is fixed  similarly, a loop being defined between both chains of insulators, which "bridges" the pole and lacks tension mechanics.

Obviously the characteristics of said insulators as well as the chain length configured by the They vary depending on the voltage to which the line.

On the other hand both the electric wires of these airlines as the posts that participate in them They are common innkeepers for the most varied types of birds, being relatively frequent that birds of considerable wingspan, such as eagles and others, perching on a Pole contact through one of its wings with the electric cable closer, acting your body as a driving bridge that relates the cable with the pole and through it with the ground, which It involves instantaneous death by electrocution.

There is also the circumstance that this problem affects precisely the birds with the highest risk of extinction.

So far the only known solution for this problem consists in lengthening the chains of insulators to distance the cables of the posts as far as possible, which obviously represents an uneconomic solution, given the considerable increase in cost that occurs when the length of insulator chains.

Description of the invention

The protector proposed by the invention resolves in a fully satisfactory way the problem previously cited, getting similar effects but with some considerably lower investments.

To do this and more specifically said protector materializes in a piece of plastic, which as such is electro insulating, which completely covers the cable electrical in that zone or zones close to its point of attachment to the chains of suspension insulators.

More specifically, it is expected that plastic piece materialize in a kind of bivalve body, susceptible to elastic deformation for coupling to the cable and to a terminal element of the insulator chain, bivalve body in which flat fins are established that contact each other in closing situation and that are provided with holes Operationally faced for rivets or any other step type of similar elements of definitive fixation between the two valves in the protector's closing situation.

From this basic structuring, the protector can adopt two different configurations depending on that is intended for a line simply suspended from the posts or connected to them with mechanical tension, so that in the first case the said body will adopt a "T" configuration inverted, while in the second case it will adopt a general configuration in "L".

Description of the drawings

To complement the description that is being performing and in order to help a better understanding of the characteristics of the invention, according to a preferred example of practical realization of it, is accompanied as part member of that description, a set of drawings where with illustrative and non-limiting nature, what has been represented next:

Figure 1.- Shows an elevation view side of a faunal protector for overhead power lines carried out in accordance with the object of the present invention, of according to a practical embodiment intended for cables fixed to The posts by simple suspension.

Figure 2.- Shows a perspective of the protector of the previous figure.

Figure 3.- Shows a view similar to that of Figure 1, of the same protector, now properly coupled to the Powerline.

Figure 4.- Shows, finally, a schematic representation in side elevation of a variant of realization of the protector for cables that are fixed to the Poles with tension, also in work situation.

Preferred Embodiment of the Invention

In figure 3 a protector is shown mounted on an overhead power line in which the cable (1) is simply suspended from a vertical chain of insulators (2), which in turn hangs from the pole, not shown. In this type of line the protector materializes in a body (3), of plastic nature, which configures a kind of bivalve element, with a central core that corresponds to reference (3) and where the mechanical connection between the cable (1) and the end is located bottom of the chain of insulators (2), central body (3) of which three necks emerge that make up approximately one "T" inverted, specifically a top neck (4) receiver of the lower end of the chain of insulators (2), and two necks bottom (5-5 '), one input for the cable (1) and another exit for it, which according to the catenary that will form the corresponding sections of the cable (1), adopt a slightly inclined arrangement, as shown in the Figure 1.

Core (3) and necks (4 and 5) extend in fins (6) that due to the elastic nature of the plastic material they tend to contact those of one leaflet with those of the other, counting with facing holes (7) for screw passage (8) rivets or any other appropriate fixation type, which stabilizes due and definitely the protector to the line.

Obviously the length of the necks (5-5 ') defined in the protector, will be appropriate to get the proper distance between the part bare the cable (1) and the pole that supports the line.

When it is a line in which cables are not simply suspended from chains insulators, but are properly tensioned between post and post, through chains of insulators (2 ') that adopt a substantially horizontal arrangement, as shown in Figure 4, and in which the input cable (1) after solidarity with tension mechanical to the insulators (2 ') describes a loop (9) without tension mechanical to be fixed on the other side of the post to the complementary string of output insulators, not shown, configuration of the device varies significantly, forced by these mechanical conditioning, so that your body (3 ') tends more to the configuration of an inverted "L", as shown the aforementioned figure 4, or a "T" not inverted and accused symmetric, also defining an entry neck (10) of the substantially horizontal cable (1), a contrasted neck and considerably shorter (11) through which you access your inside the end corresponding to the chain of insulators (2 '), and a lower neck (12) through which the loop (9) comes out configured by the cable between the fixing point at the entrance and at the exit of the line.

Logically in this case the piece (3 ') continues maintaining the same bivalve configuration and the same holes in its marginal fins for stabilization in a closed situation or work, with the collaboration of screws, rivets or others appropriate fixing means.

Claims (3)

1. Faunal protector for overhead power lines, characterized by being constituted by a single-piece body, of a plastic nature, which adopts a bivalve structuring constituting a housing for the junction point between the electric conductor cable and the fixing element of said cable to the corresponding chain of support insulators, also incorporating said bivalve body, marginal and perforated fins, which in close contact with each other, leaving their holes facing for the passage of screws, rivets or other fixing means that stabilize the protector in a closed situation, protector that has necks for entry and exit of the cable, sufficiently elongated depending on the respective sections of electrical cable that you want to protect. 2. Faunal protector for overhead power lines, according to claim 1, characterized in that when it is intended for lines in which the cables are simply suspended from respective chains of insulators hanging from the pole, said body adopts an inverted "T" configuration, being its vertical branch destined to receive the lower end of the chain of insulators, while its lateral branches, slightly inclined downwards, receive in its bosom the corresponding sections of the cable, the closing fins being located between the mentioned necks. 3. Faunal protector for overhead power lines, according to claim 1, characterized in that when the cables are fixed with mechanical tension to the post, by chains of substantially horizontal insulators, one of input and output, between which a cable loop is established Without mechanical tension, the body of a plastic and electro-insulating nature adopts an inverted "L" or non-inverted, asymmetrical "T" configuration, housing the mechanical connection between the electrical cable and the insulator chain at its center, elements that they access through their horizontal entrances, while their lower branch covers the initial section of the loop configured by the electrical cable between chain and insulators.