CN205756861U - All insulation bird-resistant - Google Patents

Abstract

The utility model relates to a fully insulated anti-bird thorn, which comprises an insulating base and an insulating monofilament. The insulating base is provided with installation grooves, and the upper surface of the base is provided with multi-layer installation plane jacks from inside to outside. The tunnel formed inside the base is inclined, the elevation of the base is provided with elevation jacks along the circumference, and the tunnels formed by the elevation jacks extending to the interior of the base are inclined; insulating monofilaments are inserted into the plane jacks and the facade jacks. The angle of scattering of the bird thorns of the utility model is expanded according to the standard, the bird is not easy to build a nest, the service life is long, and the protection effect is improved.

Description

Fully insulated anti-bird thorn

technical field

The utility model belongs to the technical field of electric power transmission and relates to a fully insulated anti-bird thorn, which is mainly applied to transmission lines of various voltage levels of 10kV and above.

Background technique

Spring and autumn are the peak periods of bird flocking, migration, and nesting, and they are also the periods of frequent tripping of transmission lines due to bird damage. Birds often use thin iron wires and branches in the process of nesting, which are easy to discharge on the wires, and birds defecate on the top of the line insulator, etc., which may cause insulation flashover, single-phase grounding, and line trip failure. Due to the characteristics of the tower structure of the transmission line, the iron materials are concentrated at the hanging points of the wires and the spacing is small, which makes it easier for birds to nest and rest, thus greatly increasing the probability of bird damage. At present, the commonly used anti-bird measures on transmission lines mainly include the following types: 1. Install auxiliary facilities above the hanging points of the wires to occupy places where birds may nest and rest. Such products include: anti-bird thorns, bird baffles, Bird repellent, etc.; 2. Increase the diameter of the shed at the top of the insulator, so that even if the bird defecates or nesting materials fall, it will stay away from the wires and avoid tripping. Such products include: large shed insulators, insulating bird protection covers, etc.; 3. Install an insulating anti-bird sheath on the wire, that is, wrap the insulating material on the wire and hardware below the wire hanging point to improve the insulation performance of the wire, thereby preventing the occurrence of bird damage. 4. Light wave, sound wave bird repelling device, etc. The above bird prevention measures have their own advantages and disadvantages. Either the investment is large and the installation is cumbersome, or the bird prevention effect is average due to the quality requirements of the installation process. Overall rating, the anti-bird thorn is a cost-effective, effective and widely used anti-bird product. The anti-bird thorns currently used are all metal products, which are simple to make. They are basically made of more than 22 single steel wires with springs of 50mm in length, and the bottom is crimped. However, there are the following disadvantages through operation and use:

1. When the installation is completed, the installer needs to split the steel wires one by one into a fan-like shape to increase the protection radius. Due to the lack of fixed standards and different workers' techniques, the splitting angles are different, and the protection radius is small, thereby reducing the bird-proof effect. , It is often seen that the parts where the anti-bird thorns have been installed are still nested.

2. Since this kind of bird thorn is a metal product, the monofilament needs to be split after installation. Long-term exposure to the natural environment can easily damage the galvanized layer. Under the excitation of the wind, the root bends and vibrates frequently, which is easy to rust and Breaking, rusty water flowing down the insulator or single wire falling off may also reduce the insulation performance of the insulator and short-circuit the air gap, resulting in line failure.

3. Affected by the tower structure and insulator height, power lines with a voltage level of 66kV and below cannot be installed with anti-bird stab products. At present, the anti-bird devices for low-voltage lines are basically blank.

4. Due to the limitation of land occupation and planning of pipe corridors, double-circuit and multi-circuit pole towers are increasing. The biggest disadvantage of using metal bird-proof thorns on vertically arranged pole towers is to encroach on the air gap under the wire and form a physical phenomenon of tip discharge. , increase the hazard of overvoltage, and easily cause lightning strike failures. At the same time, after the installation of metal bird-proof thorns, the lightning protection angle of the line is invisibly increased, which has hidden dangers of lightning and also has the potential danger of causing lightning failures.

Utility model content

The utility model aims at the problems existing in the above-mentioned prior art, and provides a fully insulated anti-bird thorn, which solves the problem of unsatisfactory anti-bird thorn effect in the prior art.

The technical scheme of the utility model is as follows:

Fully insulated anti-bird thorn, including insulating base and insulating monofilament, the insulating base is provided with installation grooves, the upper surface of the base is provided with multi-layer installation plane jacks from the inside to the outside, and the plane jacks extend to the inside of the base to form a hole in the form of It is arranged obliquely, and the elevation of the base is provided with elevation jacks along the circumference, and the elevation jacks extend to the tunnels formed inside the base to be inclined; the insulating monofilament is inserted into the plane jacks and the elevation jacks.

The insulating base is a cylinder with a diameter of 6 cm and a height of 5 cm.

The inclination angle of the plane jack channel is 40° to 90°.

The inclination angle of the said façade socket channel is 30°.

The plane jacks are arranged in four layers from the inside to the outside.

The insulating monofilament has a diameter of 2mm and a length of 30-70cm.

Said insulating monofilament is covered with an orange warning layer.

Adhesive layers are provided between the insulating monofilament and the plane jack, and between the insulating monofilament and the vertical jack.

Fastening bolts are arranged in the installation grooves.

The utility model has the following advantages:

1. The angle is reasonable, which solves the problem of no difference in installation. Unified the scattering angle of the bird spines, and solved the phenomenon of uneven separation of the bird spines due to the difference in the installation workers' techniques after the bird spines were installed. Standard unwrapped scatter shape.

2. A layer of anti-bird monofilament is added to the base, which narrows the gap between the anti-bird monofilament and the bottom plane of the cross arm, making it difficult for birds to build nests.

3. The anti-bird thorns made of fully insulating materials no longer occupy the air gap of the wires due to the installation of anti-bird thorns, effectively solve the problems of intermittent discharge and line protection angle increase, and control the tip discharge and lightning protection overvoltage to zero.

3. Due to the use of insulating materials, there is no corrosion phenomenon, and the service life is much longer than that of metal products.

4. Since it is not limited by the air gap, it effectively solves the anti-bird device for low-voltage lines, and can be used on towers of various voltage levels. In addition, the epoxy FRP insulating monofilament can be made to 70cm, thereby increasing the protection radius, reducing the number of installations, and improving the protection effect.

5. The insulated anti-bird thorn is light in weight, and the vibration frequency of the monofilament by the breeze is higher than that of the ordinary steel wire.

6. The installation is safer and avoids the harm caused by induction electricity to the installation workers.

Description of drawings

Fig. 1 is the structural representation of the utility model.

Fig. 2 is a schematic diagram of the structure of the base of the utility model.

Fig. 3 is a schematic diagram of the top view structure of the base of the utility model.

In the figure, 1. base, 2. monofilament, 3. installation groove, 4. fastening bolt, 5. plane jack, 6. elevation jack.

detailed description

Example

As shown in the figure, the fully insulated anti-bird thorn includes an insulating base 1 and an insulating monofilament 2. The insulating base is a cylinder with a diameter of 6 cm and a height of 5 cm. Bolt 4, the upper surface of the base is provided with four rings of mounting plane jacks 5 from inside to outside, the plane jacks extend to the inside of the base to form a 40-90° inclined channel, and the elevation of the base is provided with elevation jacks along the circumference 6. The hole formed by the vertical jack extending to the inside of the base is set at a 30° inclination; the insulating monofilament is inserted into the plane jack and the facade jack, between the insulating monofilament and the plane jack, and between the insulating monofilament and the facade jack An adhesive layer is arranged between them; the diameter of the insulating monofilament is 2mm, and the length is 30-70cm; the insulating monofilament is covered with an orange warning layer.

The utility model is made of all insulating materials except for the fastening bolts. The base is made of polyamide 6 (PA6) with a diameter of 6cm and a height of 5cm. 1.14-1.15g/cm³, melting point at 215~-℃, tensile strength>60Mpa. With the center as the origin, the plane jacks are evenly arranged on the outside with 4 layers of jacks. The angle of the jacks is 40~90°, so that after the monofilaments are installed, all the monofilaments are evenly scattered, and they are evenly arranged within the circumference of the base elevation. The façade jacks are arranged at an angle of 30° to solve the problem of reducing the angle between the lower monofilament and the iron tower plane after the bird spines are installed, making it difficult for birds to build nests between the bird spines and the iron tower plane.

The monofilament material of the utility model is made of epoxy FRP wire drawing process. The bending and compressive strength of the material can reach more than 300Mpa, the insulation resistance is greater than 700 megohms, and the monofilament is covered with an orange warning layer. The diameter of the monofilament is 2mm and the length is 30- 70cm. The end of the insulating monofilament is dipped in a strong adhesive and inserted into the base, and is tightly fitted with the mounting hole of the base to be firmly installed.

The utility model is suitable for all kinds of transmission line poles and towers with voltage levels of 10kV and above, and is used as the main measure for preventing bird damage.

Claims (9)

1. Fully insulated anti-bird thorn, characterized in that it includes an insulating base and an insulating monofilament, the insulating base is provided with installation grooves, the upper surface of the base is provided with multi-layer installation plane jacks from the inside to the outside, and the plane jacks extend to the base The tunnels formed inside are arranged obliquely, the elevation of the base is provided with elevation jacks along the circumference, and the elevation jacks extend to the tunnels formed inside the base to be inclined; the insulating monofilament is inserted into the plane jacks and the facade jacks. 2. The fully insulated anti-bird thorn according to claim 1, characterized in that the insulating base is a cylinder with a diameter of 6 cm and a height of 5 cm. 3. The fully insulated anti-bird thorn according to claim 1, characterized in that the inclination angle of the plane socket channel is 40-90°. 4. The fully insulated anti-bird thorn according to claim 1, characterized in that the angle of inclination of the jack hole on the facade is 30°. 5. The fully insulated anti-bird thorn according to claim 1, characterized in that said planar jacks are arranged in four layers from inside to outside. 6. The fully insulated anti-bird thorn according to claim 1, characterized in that the diameter of the insulating monofilament is 2mm and the length is 30-70cm. 7. The fully insulated anti-bird thorn according to claim 1 or 6, characterized in that said insulating monofilament is covered with an orange warning layer. 8. The fully insulated anti-bird thorn according to claim 1, characterized in that an adhesive layer is provided between the insulating monofilament and the plane jack, and between the insulating monofilament and the vertical jack. 9. The fully insulated anti-bird thorn according to claim 1, characterized in that fastening bolts are arranged in the installation groove.