CN105006310A - Bird damage preventing method for composite insulator - Google Patents

Abstract

The invention provides a method for preventing bird damage of composite insulators, which can reduce the possibility of flashover of insulators due to bird damage. The method for preventing bird damage is carried out in the following manner: (1) a closed voltage equalizing ring is installed at the end of the composite insulator, the closed voltage equalizing ring includes two semicircular plates, and the connecting rods on the semicircular plates pass through Bolts are connected, and a semi-circular snap ring is provided in the middle of the connecting rod; (2) An anti-bird pecking outer sheath is installed on the composite insulator. The anti-bird pecking outer sheath includes a casing with upper and lower openings, and a Connecting ears, the lower part of the casing has a large opening, and the inner diameter of the lower part of the casing matches the protrusion on the composite insulator. When installing, apply adhesive to the inside of the casing, use screws to connect the two connecting ears, and use clips to prevent bird pecking The outer sheath is fixed on the composite insulator. The invention can reduce the pecking of birds on insulators, reduce the frequency of insulator flashover and line tripping, and the installation and update of the anti-bird protection cover are relatively easy.

Description

A method for preventing bird damage of composite insulators

technical field

The invention relates to the safety problem of power transmission lines, in particular to a method for preventing bird damage on power transmission lines.

Background technique

Henan Power Grid is located in the Central Plains, and it is located on many migratory routes that migratory birds must pass. Compared with measures such as lightning protection and increasing mechanical strength, which have been carried out for a long time and have relatively mature technologies, the work of preventing bird damage on transmission lines is more regional and seasonal , the work of preventing bird damage is more targeted in terms of improving project quality and increasing economic benefits.

Birds can cause flashover of insulators, leading to power outages in circuits, which is very harmful. The staff has adopted many methods to prevent flashover of insulators, for example: 1. Regularly check insulators by climbing poles and towers, and update them in time if any damage is found; 2. Use infrared temperature measurement and ultraviolet imaging technology to monitor whether the insulator is faulty; 3. Install anti-bird devices, such as pressure equalizing rings, anti-bird thorns, bird scarers, etc. Among these solutions, bird scarers are mainly used for prevention, but the preventive effect is limited, and there is still the problem of damage to insulators. The hazards of bird pecks and bird droppings are still relatively obvious. In the end, workers still need to climb up to replace insulators.

Contents of the invention

The purpose of the present invention is to address the shortcomings of the above-mentioned prior art, and provide a method for preventing bird damage of composite insulators, which can reduce the possibility of flashover of insulators due to bird damage, and can ensure the normal operation of the circuit without frequent replacement of insulators .

Technical scheme of the present invention is realized like this:

A method for preventing bird damage of composite insulators is carried out in the following manner:

(1) Install a closed pressure equalizing ring at the end of the composite insulator close to the pole tower. The closed pressure equalizing ring consists of two semicircular plates. The connecting rods on the semicircular plates are connected by bolts. clasp;

(2) Install the anti-bird pecking outer sheath on the composite insulator. The anti-bird pecking outer sheath includes a casing with upper and lower openings. The side opening of the casing is provided with connecting ears. The lower part of the casing has a large opening, and the inner diameter of the lower part of the casing is the same as The protrusions on the composite insulator fit together. When installing, apply adhesive to the inside of the casing, use screws to connect the two connecting ears, and use clips to fix the bird-pecking outer sheath on the composite insulator.

The anti-bird pecking outer sheath is made of the same silicone rubber as the insulator.

The anti-bird thorns are reversely installed on the cross arm or pole tower directly above the composite insulator of the line I series. The anti-bird thorns include the base, the connecting shaft and the thorns. When installing, the thorns face downward.

Stomp on the bird's nest above the insulator.

The method for preventing bird damage of the invention can reduce the pecking of birds on insulators, reduce the frequency of insulator flashover and line tripping, and the installation and renewal of the bird protection cover are relatively easy.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description are only These are some embodiments of the present invention. Those skilled in the art can also obtain other drawings based on these drawings without creative work.

Figure 1 is a schematic diagram of an insulator.

Fig. 2 is a structural schematic diagram of an insulator-mounted anti-bird device according to the present invention.

Fig. 3 is a structural schematic diagram of the anti-bird protection cover.

Fig. 4 is a schematic diagram of the structure of the equalizing ring.

FIG. 5 is a schematic right view of FIG. 4 .

Fig. 6 is a structural schematic diagram of the anti-bird thorn.

Among them: 1. Closed pressure equalizing ring, 1-1. Semicircular plate, 1-2. Connecting rod, 1-3. Snap ring, 2. Bird-proof outer sheath, 2-1. Sleeve body, 2- 2. Connecting ear, 3. Composite insulator, 4-1. Base, 4-2. Shaft, 4-3. Anti-bird thorn.

Detailed ways

The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

The number of trips caused by bird damage accounts for about 10% of the total number of trips. The main types of bird damage are nesting, bird droppings and bird pecking insulators. Insulators are divided into tension insulators and linear insulators. Measures to prevent bird damage in existing circuit operations More, some blindly, the present invention confirms the main cause of bird damage according to the following steps:

(1) Confirm the damage of bird damage to tension insulators and linear insulators: about 89.4% of tensile insulators are pecked by birds, and about 10.6% of linear insulators are pecked by birds.

(2) Confirm the main damage caused by birds to tension insulators: birds peck about 81% of the end sheaths of tension insulators, and birds peck about 19% of insulator sheds.

(3) Confirm the reason why the birds mainly peck the sheath at the end of the tension insulator: Since the end of the tension insulator is connected to the open pressure equalizing ring, it is easier for the bird to stand, and the head of the bird can pass through the open pressure equalizing ring The ring pecks the end of the insulator.

After the above three steps, the staff found the main cause and location of the insulators being pecked by birds. Therefore, the method for preventing bird damage of composite insulators of the present invention is carried out in the following manner:

(1) Install a closed pressure equalizing ring 1 at the end of the composite insulator 3 close to the pole tower, the closed pressure equalizing ring 1 includes two semicircular plates 1-1, and the connecting rod 1-2 on the semicircular plate 1-1 Connected by bolts, the middle part of the connecting rod 1-2 is provided with a semi-circular snap ring 1-3;

(2) Install the anti-bird pecking outer sheath 2 on the composite insulator 3, the anti-bird pecking outer sheath 2 includes a sleeve body 2-1 with upper and lower openings, and the side opening of the sleeve body 2-1 is provided with connecting ears 2-2 , the lower part of the sleeve body 2-1 has a large opening, and the inner diameter of the lower part of the sleeve body 2-1 matches the protrusion on the composite insulator 3. During installation, the inside of the sleeve body 2-1 is coated with adhesive, and the two connecting ears are connected by screws. 2-2 connection, the anti-bird pecking outer sheath 2 is fixed on the composite insulator 3 with clips.

In the present invention, the semicircular plate 1-1 forms the pressure equalizing ring in a closed form, and birds cannot extend their heads through the voltage equalizing ring when they stand at the end of the insulator, reducing scratches on the end of the insulator. In addition, for the tension insulator already installed on the circuit, it is enough to install a bird-pecking outer sheath 2, and there is no need to replace the tension insulator. When birds peck the insulator, the bird-pecking outer sheath will be damaged first. , while the insulator will not be damaged. The staff regularly checks the anti-bird peck outer sheath and updates it. For newly installed insulators, the bird-proof outer sheath and closed grading ring can be installed at the same time.

The anti-bird pecking outer sheath 2 is made of the same silicon rubber as the insulator, so that birds will not pick and choose when pecking, thereby protecting the insulator.

Preferably, the present invention installs anti-bird thorns on the cross arm or pole tower above the straight line I series of composite insulators 3. The anti-bird thorns include a base 4-1, a connecting shaft 4-2 and a thorn 4-3. When installing, The thorns 4-3 are facing down. In the prior art, anti-bird thorns are also installed, but the installation method is that the thorns face upwards. This method is ok at the beginning, but after a period of use, the anti-bird thorns fail to sag, which makes it easy for birds to nest here. . The anti-bird thorns are reversely installed so that the thorns 4-3 face down, and because the thorns 4-3 occupy the position of the bird's nest, birds cannot effectively build nests, and bird damage can be prevented.

In the actual operation process, it is found that it is only harmful when the bird’s nest is built above the insulator, and the birds like to rebuild the nest at the original position. Therefore, the present invention requires the staff to step on the bird’s nest above the insulator. Birds that build nests again cannot roost and build nests again, thereby preventing the activities of birds on the tower, and preventing bird droppings and bird nests from causing damage to insulators.

Through experiments, it is found that the anti-bird damage grading ring and the bird-proof outer sheath have achieved good results on the tension insulator, and the incidence of bird damage has dropped from 7.30% to 2.55%, reaching a rate of less than 3%. target requirements. Taking a 220 kV line as an example, after adopting the present invention, compared with the replacement of bird-peck composite insulators with live electricity, the cost saving is 2865 yuan per basis, and the cost saving is 20945 yuan per basis compared with the replacement of bird-pecker insulators when power is off, and the bird-pecker brittleness is eliminated. possibility.

The above descriptions are only preferred embodiments of the present invention, and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included in the scope of the present invention. within the scope of protection.

Claims (4)

1. A composite insulator anti-bird method is characterized in that it is carried out in the following manner: (1) Install a closed pressure equalizing ring (1) at the end of the composite insulator (3) close to the pole tower. The closed pressure equalizing ring (1) includes two semicircular plates (1-1), and the semicircular plate (1 -1) The connecting rods (1-2) on the top are connected by bolts, and the middle part of the connecting rods (1-2) is provided with a semi-circular snap ring (1-3); (2) Install the anti-bird pecking outer sheath (2) on the composite insulator (3). The anti-bird pecking outer sheath (2) includes a casing (2-1) with upper and lower openings, and The side opening is provided with connecting ears (2-2), the lower opening of the sleeve body (2-1) is large, and the inner diameter of the lower part of the sleeve body (2-1) cooperates with the protrusion on the composite insulator (3). The inside of the body (2-1) is coated with adhesive, the two connecting ears (2-2) are connected by screws, and the bird-pecking-proof outer sheath (2) is fixed on the composite insulator (3) by clips. 2. The bird-proofing method for composite insulators according to claim 1, characterized in that: the bird-pecking-proof outer sheath (2) is made of the same silicon rubber as the insulator. 3. The anti-bird method for composite insulators according to claim 1 or 2, characterized in that: install anti-bird thorns on the cross arm or tower above the composite insulator (3), the anti-bird thorns include a base (4-1) , connection shaft (4-2) and thorn (4-3), when installing, thorn (4-3) is downward. 4. The bird damage prevention method for composite insulators according to claim 3, characterized in that: the bird's nest above the insulator is trampled flat.