FR3107809A1 - Device for fixing an anti-bird rod on an anchoring end of an electrically conductive overhead line, corresponding anti-bird protection device and method - Google Patents

Abstract

This device (16), for fixing an anti-bird rod (14) on one end (12) for anchoring an electrically conductive overhead line to a supporting structure, comprises a foot (28) for an anti-bird rod. with a main axis intended to be coincident with that of a proximal end (14A) of the anti-bird rod (14) and with a fixing base. It also comprises a collar (18), integral with the stem base (28), for clamping around a support member (20) of the anchoring end (12). The rod foot (28) is fixed to the clamping collar (18) by its base using means formed in the clamping collar (18) and cooperating with this base so that the main axis of the rod foot (28) passes through the clamp (18). Figure for the abstract: Fig. 1

Description

Device for fixing an anti-bird rod to an anchoring end of an electrically conductive overhead line, corresponding anti-bird device and method

The present invention relates to a device for fixing an anti-bird rod on an anchoring end of an electrically conductive overhead line to a load-bearing structure. It also relates to an anti-bird protection device comprising such a fixing device and a corresponding protection method.

It applies equally well to an overhead line anchoring context, in particular a high-voltage electrically conducting overhead line, to a pole using a chain of insulators, and to an anchoring context. power line, called "tense", inside a substation.

It is common for birds to attempt to land on anchor ends, especially insulator strings. This usually leads to their death, which is particularly problematic when dealing with protected species. This also leads to spurious alarms and fleeting or permanent breaks in the electrical transmission link by phase/earth tripping. It is then necessary to intervene on site to remove any dead bird stuck between insulators after locking out the line concerned. It also affects the quality of the electricity supply.

To avoid all these inconveniences, it is known to have anti-bird rods on the anchoring ends, in particular chains of insulators with caps and rods connected to each other. In these chains of insulators, two successive insulators are connected together by inserting a ball-and-socket rod from one into a corresponding ball-and-socket housing in the cover of the other and by fixing this connection using a pin inserted in the bonnet ball joint housing through a side hole. The provision of a bird control rod requires removing the pin and drilling a second side hole, opposite the first, in the hood. The anti-bird rod is then arranged by insertion into the two holes and fixed by bolting on either side of the cover through which it passes. It thus replaces the pin by also extending laterally to effectively fulfill its bird protection function in the chain of insulators with minimal bulk.

But it is at the cost of a modification of the insulator on which it is arranged. In particular, the lateral drilling of the bonnet must be done in the workshop and affects the galvanization which protects it. In addition, the provision operation of an anti-bird rod requires a resumption of effort the time to replace an existing insulator with a modified insulator, which is complex at the anchoring ends of very high voltage lines. such as 225 or 400 kV.

It is also known to design devices for fixing anti-bird rods on electrically conductive overhead lines that do not require modifications to the latter. An example is described in international patent application WO 2015/148643 A1. It is a device comprising an elongated modular base in which two receptacles of proximal ends of anti-bird rods are arranged. Cavities with lateral crossings are also provided in the modular base for the passage of clamps allowing fixing of the elongated modular base on an overhead line conductor cable without any necessary adaptation of the latter.

• un pied de tige anti-oiseaux à axe principal destiné à être confondu avec celui d’une extrémité proximale de la tige anti-oiseaux, ce pied de tige comportant une base de fixation; et
• un collier, solidaire du pied de tige, de serrage autour d’un organe support de l’extrémité d’ancrage.

The invention thus applies more particularly to a device for fixing an anti-bird rod to an anchoring end of an electrically conductive overhead line to a supporting structure, comprising at least:

• an anti-bird stem foot with a main axis intended to merge with that of a proximal end of the anti-bird stem, this stem foot comprising a fixing base; And
• a collar, integral with the stem foot, for tightening around a support member of the anchoring end.

But in the example of document WO 2015/148643 A1, at least two clamps are necessary for stable fixing of the modular base and the proposed device has such a size that it is not possible to envisage it at an overhead line anchoring end, in particular between two insulators.

It may thus be desirable to provide a device for fixing an anti-bird rod which makes it possible to overcome at least some of the aforementioned problems and constraints.

• un pied de tige anti-oiseaux à axe principal destiné à être confondu avec celui d’une extrémité proximale de la tige anti-oiseaux, ce pied de tige comportant une base de fixation; et
• un collier, solidaire du pied de tige, de serrage autour d’un organe support de l’extrémité d’ancrage;

dans lequel le pied de tige est fixé au collier de serrage par sa base à l’aide de moyens formés dans le collier de serrage et coopérant avec cette base de sorte que l’axe principal du pied de tige traverse le collier de serrage.There is therefore proposed a device for fixing an anti-bird rod to an anchoring end of an electrically conductive overhead line to a load-bearing structure, comprising:

• an anti-bird stem foot with a main axis intended to merge with that of a proximal end of the anti-bird stem, this stem foot comprising a fixing base; And
• a collar, secured to the stem foot, for tightening around a support member of the anchoring end;

in which the stem foot is fixed to the clamping collar by its base using means formed in the clamping collar and cooperating with this base so that the main axis of the stem base passes through the clamping collar.

Thus, a minimal footprint is obtained since the anti-bird rod once installed extends from a main axis starting from the clamp itself. This can then be clamped around a support member of the anchoring end without modifying the latter, even when the available space is reduced, for example between two insulators of a chain of insulators.

• le pied de tige anti-oiseaux est formé dans l’extrémité proximale de la tige anti-oiseaux; ou
• le pied de tige anti-oiseaux comporte un réceptacle destiné à recevoir l’extrémité proximale de la tige anti-oiseaux par insertion selon l’axe principal.

Optionally:

• the anti-bird rod foot is formed in the proximal end of the anti-bird rod; Or
• the anti-bird rod foot comprises a receptacle intended to receive the proximal end of the anti-bird rod by insertion along the main axis.

These two configurations are particularly simple to design and install.

Also optionally, the fixing means formed in the clamping collar comprise a hole through which the stem foot passes and against the edges of which the fixing base comes into abutment, clamped between the clamping collar and the support member of the anchoring end when the clamp is arranged and tightened around this support member.

Also optionally, the clamping collar is preformed in a ring and comprises a clamping member diametrically opposed to the fixing means of the stem foot.

Also optionally, the clamping collar has a curved lateral extension, located in line with the rod foot, shaped to be anchored in a fixing housing of the support member of the anchoring end.

This makes it possible to avoid any undesired pivoting movement of the fixing device around the support member.

Also optionally, the rod foot and the clamping collar are made of galvanized sheet metal or stainless steel.

• une tige anti-oiseaux s’étendant depuis une extrémité proximale de fixation sur l’extrémité d’ancrage jusqu’à une extrémité distale libre; et
• un dispositif de fixation selon l’invention:
  • dont le collier de serrage est destiné à être disposé et serré autour d’un organe support de l’extrémité d’ancrage , et
  • dont le pied de tige est solidaire de l’extrémité proximale de la tige anti-oiseaux.

There is also proposed a device for protecting an anchoring end of an electrically conductive overhead line against birds, comprising:

• a bird control rod extending from a proximal attachment end on the anchor end to a free distal end; And
• a fixing device according to the invention:
  • whose clamping collar is intended to be placed and tightened around a support member of the anchoring end, and
  • whose stem foot is integral with the proximal end of the anti-bird stem.

Optionally, the anti-bird rod is made of polytetrafluoroethylene.

• solidarisation d’au moins une tige anti-oiseaux et d’au moins un dispositif de fixation selon l’invention de sorte que l’axe principal du pied de tige anti-oiseaux soit confondu avec celui d’une extrémité proximale de la tige anti-oiseaux;
• disposition dudit au moins un dispositif de fixation autour d’au moins un organe support de l’extrémité d’ancrage à l’aide de son collier de serrage; et
• fixation dudit au moins un dispositif de fixation par action sur un organe de serrage de son collier de serrage.

There is further provided a method for bird-proofing an electrically conductive overhead line anchor end to a load-bearing structure, comprising the following steps:

• securing at least one anti-bird rod and at least one fixing device according to the invention so that the main axis of the foot of the anti-bird rod coincides with that of a proximal end of the anti-bird rod -birds;
• arrangement of said at least one fixing device around at least one support member of the anchoring end using its clamping collar; And
• fixing of said at least one fixing device by action on a clamping member of its clamping collar.

• l’extrémité d’ancrage à protéger contre les oiseaux est une chaîne d’ancrage constituée d’une série d’isolateurs à capot et tige raccordés les uns aux autres;
• l’organe support de l’extrémité d’ancrage est le capot d’au moins l’un des isolateurs;
• on insère, dans un logement de fixation du capot à la tige d’un autre isolateur de la chaîne d’ancrage ou à la structure porteuse, une extension latérale recourbée que présente le collier de serrage au droit du pied de tige.

Optionally:

• the anchor end to be protected against birds is an anchor chain consisting of a series of cap and rod insulators connected to each other;
• the anchoring end support member is the cover of at least one of the insulators;
• a curved lateral extension presented by the clamping collar in line with the foot of the rod is inserted into a housing for fixing the cover to the rod of another insulator of the anchoring chain or to the supporting structure.

The invention will be better understood with the aid of the following description, given solely by way of example and made with reference to the appended drawings in which:

FIG. 1 schematically represents in perspective the general structure of a device for protecting an anchoring end of an electrically conductive overhead line against birds, as arranged and fixed around a support member of this end of anchoring, according to one embodiment of the invention,

FIG. 2 schematically represents in side view a device for fixing the protection device of FIG. 1,

FIG. 3 schematically represents in front view the device for fixing the protection device of FIG. 1,

FIG. 4 schematically represents a top view of the device for fixing the protection device of FIG. 1,

FIG. 5 schematically represents in deployed view a clamping collar of the device for fixing the protection device of FIG. 1, and

FIG. 6 illustrates the successive steps of a method for protecting against birds from an anchoring end of an electrically conductive overhead line to a load-bearing structure, according to one embodiment of the invention.

The device 10 for protecting an end 12 of an electrically conductive overhead line anchor against birds as illustrated in FIG. 1 comprises a bird control rod 14 extending from a proximal end anchoring end 12 to a free distal end 14B. It further comprises a fixing device 16 comprising a clamp 18 around a support member 20 of the anchoring end 12.

The anchoring end 12 partially illustrated in FIG. 1 is a chain of cap and pin insulators, only one of which is shown for clarity. This insulator has more precisely a ball and socket assembly (from the English "ball and socket"). Thus, its cover which forms the aforementioned support member 20 is generally cylindrical in shape and has a cylindrical projection of lesser diameter with a ball joint housing 22. Its rod 24, which can be seen by transparency behind an insulating skirt (or plate) 26, is ball joint so as to be fixed in ball joint connection in the ball joint housing of another neighboring insulator.

This is how a succession of insulators can be formed to form the anchoring end 12, knowing that the example illustrated is not limiting.

The ball and socket insulator in Figure 1 could be replaced by a clevis and tongue, hook and eye insulator. , etc. More generally, cap and rod insulators could be replaced by other insulators or by a different insulator anchoring system.

But either way, an overhead line anchor end to any load-bearing structure is likely to leave little room for a bird-proof rod attachment device. This is why the fixing device 16 comprises a foot 28 of anti-bird rod, with a main axis intended to coincide with that of the proximal end 14A of the anti-bird rod 14, comprising a fixing base allowing it to 'be fixed to the clamp 18 by means of means formed in the clamp 18 and cooperating with this base so that the main axis of the stem foot 28 passes through the clamp 18. This feature gives it a minimal bulk. In particular, it can be easily housed with its anti-bird rod between two successive skirts of a chain of insulators.

In one possible embodiment and illustrated more precisely in Figures 2 (in side view), 3 (in front view) and 4 (in top view), the stem foot 28 comprises a receptacle 30, for example cylindrical and hollow, intended to receive the proximal end 14A of the anti-bird rod 14 by insertion along the aforementioned main axis denoted D. Its base 32 of larger lateral dimensions than the receptacle 30 comes into abutment against the edges of a hole 34 formed in the clamp 18 and crossed by the receptacle 30 of the stem foot 28.

Alternatively the rod foot 28 can be formed in the proximal end 14A of the anti-bird rod 14. In other words, according to this variant, it is the anti-bird rod 14 itself which passes through the hole. 34 of the clamp 18 and which has an enlarged base abutting against the edges of this hole 34.

The clamping collar 18 is for example preformed in a ring, arranged around the cover 20 and tightened against it by a clamping member 36, for example a bolt, diametrically opposed to the hole 34 which forms the means for fixing the stem foot 28 to the clamp 18. Indeed, the base 32 is then clamped between the clamp 18 and the support member 20. The tightening can be advantageously limited by inserting a spacer 37 between the ends to be bolted of the clamp 18 This spacer 37 is for example tubular so as to receive the screw of the bolt 36.

Optionally, the clamping collar 18 locally comprises a curved lateral extension 38, for example located to the right of the rod foot 28 and therefore of the hole 34, shaped to be anchored in the ball joint housing 22 of the cover 20. This allows to precisely position the anti-bird rod 14 without risk of pivoting around the cover 20. Furthermore, this curved lateral extension 38 is advantageously thin enough not to harm the function of fixing, to another insulator of the anchor chain or to the supporting structure, of the ball joint housing 22.

• former l’extension latérale recourbée 38,
• aménager un espace entre le capot 20 et le collier de serrage 18 à l’endroit où doit être enserrée la base 32 du pied de tige 28,
• présenter deux extrémités parallèles aptes à recevoir le boulon 36.

The rod foot 28 and the clamp 18 are for example made of galvanized sheet metal or stainless steel. The clamp 18 in particular is advantageously formed in one piece in a plate and has several folds P to:

• form the curved side extension 38,
• arrange a space between the cover 20 and the clamp 18 at the place where the base 32 of the stem foot 28 must be clamped,
• have two parallel ends able to receive the bolt 36.

Figure 5 is an unfolded view of the clamp 18 as it may be formed from a sheet of galvanized sheet metal or stainless steel. It comprises the hole 34 for fixing the foot of the rod 28 in the central part and two additional holes 40 at the two respective ends to receive the bolt 36. It also comprises in the central part the lateral extension 38 intended to be curved, in line with the hole 34 intended to receive the foot of rod 28. The bending locations P are indicated in this figure using dashed dashed lines.

A method of protecting against birds an end of an electrically conductive overhead line anchoring to a load-bearing structure using at least one device such as that illustrated by FIGS. 1 to 5 will now be detailed in detail. reference to Figure 6.

During a joining step 100, the anti-bird rod 14 and the fixing device 16 are joined: either by inserting the proximal end 14A of the rod 14 into the receptacle 30 of the foot of the rod 28 along the main axis D; or, as a variant, by inserting the anti-bird rod 14 into the fixing hole 34 formed in the clamp 18 when the rod foot 28 is directly formed in its proximal end 14A.

During an arrangement step 102, the fixing device 16 is placed around the cover 20 using its preformed clamping collar 18.

If the clamping collar 18 includes the curved lateral extension 38, the latter is inserted into the ball joint housing 22 of the cover 20 during an anchoring step 104. This step may require a slight take-up of force in the anchor chain, the time to pivot the cover 20 to place it in the desired direction of the anti-bird rod 14.

Finally, when the fixing device 16 is placed and possibly anchored on the cover 20, it is fixed there using the bolt 36 during a tightening step 106.

It will be noted that the order of steps 100 to 106 may vary. Step 106 is necessarily executed after steps 102 and 104. But depending on the embodiment of the protection device 10, step 100 can be executed after step 102, 104 or 106. The order of steps 102 and 104 can also vary, these two steps can even be executed simultaneously.

Furthermore, steps 100 to 106 can be repeated as many times as there are protection devices to be placed on the same anchor end. For example, a single protection device may be sufficient on a string of 63 kV line insulators, while several may be necessary on a string of 225 or 400 kV line insulators to deter larger birds.

It clearly appears that an anti-bird protection device such as that described previously makes it possible to envisage its placement at the anchoring end of an electrically conductive overhead line without impact on the constituent elements of this anchoring end and with a small footprint. It is also simple to design and quick to fix.

It will also be noted that the invention is not limited to the embodiments described above. It will indeed appear to those skilled in the art that various modifications can be made to the embodiments described above, in the light of the teaching which has just been disclosed to them. In the detailed presentation of the invention which is made above, the terms used must not be interpreted as limiting the invention to the embodiments set out in the present description, but must be interpreted to include therein all the equivalents whose provision is within the reach of those skilled in the art by applying their general knowledge to the implementation of the teaching which has just been disclosed to them.

Claims (10)

Device (16) for fixing an anti-bird rod (14) to an end (12) for anchoring an electrically conductive overhead line to a load-bearing structure, comprising:

• an anti-bird stem foot (28) with a main axis (D) intended to merge with that of a proximal end (14A) of the anti-bird stem (14), this stem foot (28) comprising a base fixing (32); And
• a collar (18), secured to the stem foot (28), for clamping around a support member (20) of the anchoring end (12);

characterized in that the stem foot (28) is fixed to the clamping collar (18) by its base (32) using means (34) formed in the clamping collar (18) and cooperating with this base ( 32) so that the main axis (D) of the stem foot (28) passes through the clamping collar (18). A device (16) for attaching a bird deterrent rod (14) according to claim 1, wherein:

• the anti-bird stem foot (28) is formed in the proximal end (14A) of the anti-bird stem (14); Or
• the anti-bird rod foot (28) comprises a receptacle (30) intended to receive the proximal end (14A) of the anti-bird rod (14) by insertion along the main axis (D).

Device (16) for fixing a bird control rod (14) according to claim 1 or 2, in which the fastening means (34) formed in the clamp (18) comprise a hole through which the rod foot passes (28) and against the edges of which the fixing base (32) comes into abutment, clamped between the clamping collar (18) and the support member (20) of the anchoring end (12) when the clamping collar tightening (18) is arranged and tightened around this support member (20). Device (16) for fixing an anti-bird rod (14) according to any one of claims 1 to 3, in which the clamping collar (18) is preformed in a ring and comprises a clamping member (36) diametrically opposite to the fixing means (34) of the stem foot (28). Device (16) for securing an anti-bird rod (14) according to any one of claims 1 to 4, in which the clamping collar (18) has a curved lateral extension (38), located at the right of the foot rod (28), shaped to be anchored in a fixing housing (22) of the support member (20) of the anchoring end (12). Device (16) for securing an anti-bird rod (14) according to any one of claims 1 to 5, in which the rod foot (28) and the clamping collar (18) are made of galvanized sheet metal or Stainless steel. Device (10) for protecting one end (12) of an overhead power line anchor against birds, comprising:

• a bird deterrent rod (14) extending from a proximal end (14A) of attachment to the anchor end (12) to a free distal end (14B); And
• a fixing device (16) according to any one of claims 1 to 6:
  • whose clamping collar (18) is intended to be placed and tightened around a support member (20) of the anchoring end (12), and
  • whose stem foot (28) is integral with the proximal end (14A) of the anti-bird stem (14).

A guard as claimed in claim 7, wherein the bird deterrent rod (14) is polytetrafluoroethylene. A method of bird-screening an end (12) of an electrically conductive overhead line anchor to a load-bearing structure, comprising the following steps:

• connection (100) of at least one anti-bird rod (14) and at least one fastening device (16) according to any one of claims 1 to 6 so that the main axis (D) of the foot (28) of the anti-bird rod coincides with that of a proximal end (14A) of the anti-bird rod (14);
• arrangement (102) of said at least one fastening device (16) around at least one support member (20) of the anchoring end (12) using its clamping collar (18); And
• fixing (106) of said at least one fixing device (16) by action on a clamping member (36) of its clamping collar (18).

A bird control method according to claim 9, wherein:

• the anchor end (12) to be protected against birds is an anchor chain consisting of a series of cap and rod insulators connected together;
• the support member (20) of the anchor end (12) is the cover of at least one of the insulators;
• a curved lateral extension (38) which the collar has clamp (18) to the right of the stem foot (28).