CN203814451U - Bird preventer of overhead transmission line - Google Patents

Abstract

The utility model relates to a bird preventer for an overhead power transmission line, which belongs to the field of electric equipment. The problem that the existing anti-bird device causes harm to the birds while preventing the birds is solved. It includes a support frame, N rotating shafts and N reflective plates; the longitudinal section of the support frame is concave, and N through holes are provided on the front and rear side walls of the support frame, and the through holes on each side wall Arranged oppositely along a straight line, the distance between two adjacent through holes on each side wall is greater than the width of the reflective sheet, and N rotation axes respectively pass through N pairs of through holes formed on the front and rear side walls of the support frame , the rotation axis is slidingly connected with the through hole, the length of the rotation axis is greater than the vertical distance between the front and rear side walls of the support frame, the length of the reflective sheet is less than the vertical distance between the front and rear two side walls of the support frame, and the reflective sheet is located at the front and rear of the support frame Between the side walls, the N rotation axes are respectively fixed on the centerlines of the N reflective plates, and the distance between two adjacent reflective plates is ensured to be greater than 0. Mainly used in transmission lines.

Description

Bird-preventing device for overhead transmission lines

technical field

The utility model relates to an anti-bird device for towers of overhead transmission lines, which belongs to the field of electric equipment.

Background technique

The anti-bird device on the overhead transmission line is an important part of the overhead transmission line. With the rapid development of the national economy, the whole society has put forward higher requirements for the safe and high-quality service of the power system. For a long time, due to the influence of bird activities in nature on power lines, the tripping faults of overhead transmission lines have directly affected the safe, reliable and economical operation of transmission lines. In recent years, the flashover and tripping faults caused by birds in transmission lines have been increasing, and the activities of birds have seriously affected the stable operation of the power grid. Most of the overhead transmission lines run in the wilderness. It covers a wide area and the ecological environment is volatile. It is undoubtedly affected by bird activities.

The danger birds pose to overhead power lines is that

Birds build nests:

In spring, birds begin to build nests and hatch on power transmission line towers. According to field observation, most of them are crows, blue storks, goshawks and other birds. These birds hold branches, iron wires, firewood, etc. in their mouths, and fly across the sky or between the wires. When the iron wires and other objects fall between the crossarm and the wires, it will cause line failure. When the wind blows, the bird's nest on the pole tower is blown away by the wind and falls on the live wire or hanging bottle, which will cause a short-circuit grounding fault.

Bird flight:

Larger birds, such as black storks, have a body length of more than 1 meter and wider wings. Larger birds may fly between conductors during aerial battles, which may cause phase-to-phase short circuit or single-phase ground fault.

Guano flashover:

The guano flashover refers to the flashover accident caused by the excrement of birds perched on the tower. Bird droppings, especially the thin droppings of green storks pollute insulator strings, and flashovers are prone to occur when the air is humid and foggy. When the bird stands on the cross arm of the porcelain bottle string or the upper part of the silicon, it defecates downwards and flows down the bottle string, causing a single-phase grounding, or the bird droppings blows to the charged body with the wind, causing the air gap to break down, causing a flashover.

In view of the above-mentioned harm of birds to transmission lines, the existing anti-bird devices include anti-bird thorns, anti-bird boards, ultrasonic bird repellents, etc. However, anti-bird thorns will cause harm to birds, which is contrary to the concept of protecting animals. Bird boards do not prevent birds from building nests. After the ultrasonic bird repellent has been used for a period of time, the birds get used to the eagle model and screams of the bird repellent, and then start to build nests in the dangerous parts of the tower again. They cannot effectively scare and drive away the danger of birds on the tower for a long time. Parts of the nest, so as to effectively control the occurrence of bird damage failure. Therefore existing anti-bird damage measures cannot effectively reduce the nesting rate of birds at dangerous parts of line towers, and cannot meet production requirements.

Utility model content

The invention aims to solve the problem that the existing anti-bird device causes harm to the birds while preventing the birds. The utility model provides an anti-bird device for overhead power transmission lines.

A bird preventer for overhead transmission lines, which includes a support frame, N rotating shafts and N reflective plates; said N is a positive integer;

The longitudinal section of the support frame is concave, N through holes are provided on the front and rear side walls of the support frame, and the through holes on each side wall are evenly distributed along a straight line, and the two side walls The through holes are arranged oppositely, and the distance between two adjacent through holes on each side wall is greater than the width of the reflective sheet,

N rotation shafts respectively pass through N pairs of through holes formed on the front and rear side walls of the support frame, the rotation shafts are slidably connected to the through holes, the length of the rotation shafts is greater than the vertical distance between the front and rear side walls of the support frame,

The length of the reflective sheet is less than the vertical distance between the front and rear side walls of the support frame, the reflective sheet is located between the front and rear two side walls of the support frame, and the N rotation axes are respectively fixed on the centerlines of the N reflective sheets. And ensure that the distance between two adjacent reflective sheets is greater than 0.

It also includes N wind wheels, the centers of the N wind wheels are respectively fixedly connected to one end of the N rotating shafts, and the distance between the wind wheel and the side wall of the support frame is greater than 0, and the N rotating shafts in the same plane arranged parallel to each other.

Said N is an integer greater than or equal to 5.

The bird preventer for overhead transmission lines described in the utility model can be fixed on the position where birds are easy to build nests and above the insulator string. When the birds step on or touch the reflective plate, the reflective plate will rotate and To scare the birds away, so that the birds cannot build nests here, the support base of the support frame can also prevent the dropping of bird droppings on the insulator strings, reduce the pollution of the bird droppings to the insulators, and improve the reliability of the transmission line. Stable operation, when the wind wheel rotates, the wind wheel can drive the reflective plate to rotate, because birds are afraid of strong light and moving objects, so it will startle the surrounding birds away.

The beneficial effect brought by the utility model is that it effectively solves the problem of birds resting and nesting on the tower, and the light reflected by the reflective plate can drive away the birds. When the birds fall on the reflective plate, the reflective plate rotates It can also play a role in repelling birds without harming birds, so as to prevent the occurrence of bird damage failures. No harm to people and birds, low cost, suitable for wide-scale promotion and use, the utility model is safe and light, convenient to install and disassemble (during maintenance work), firm and reliable, and the materials used can meet the requirements of anti-rust, anti-corrosion and environmental protection.

Description of drawings

Fig. 1 is a structural schematic diagram of a bird preventer for overhead transmission lines described in the utility model; wherein the reference numeral 2 represents the support base plate of the support frame;

Fig. 2 is a top view of a bird preventer for overhead transmission lines described in the utility model;

Fig. 3 is a front view of a bird preventer for overhead transmission lines according to the utility model.

Detailed ways

Specific Embodiment 1: Refer to Figures 1, 2 and 3 to illustrate this embodiment, a bird preventer for overhead transmission lines described in this embodiment, which includes a support frame 1, N rotating shafts 3 and N reflective plates 4 ; The N is a positive integer;

The longitudinal section of the support frame 1 is concave, and the front and rear side walls of the support frame 1 are provided with N through holes, and the through holes on each side wall are evenly distributed along a straight line, and the two sides The through-holes on the wall are arranged oppositely, and the distance between two adjacent through-holes on each side wall is greater than the width of the reflective sheet 4,

N rotating shafts 3 pass through N pairs of through holes formed on the front and rear side walls of the support frame 1 respectively, the rotating shafts 3 are slidingly connected to the through holes, and the length of the rotating shaft 3 is greater than the distance between the front and rear side walls of the support frame 1 vertical distance,

The length of the reflective sheet 4 is less than the vertical distance between the front and rear side walls of the support frame 1, the reflective sheet 4 is located between the front and rear two side walls of the support frame 1, and the N rotation axes 3 are respectively fixed on the N reflective sheets 4, and ensure that the distance between two adjacent reflective plates 4 is greater than 0, and N rotation axes 3 are arranged parallel to each other in the same plane.

Specific embodiment two: the difference between this embodiment and the bird preventer for overhead transmission lines described in specific embodiment one is that it also includes N wind wheels 5, and the centers of the N wind wheels 5 are respectively aligned with N One end of each rotating shaft 3 is fixedly connected, and the distance between the wind wheel 5 and the side wall of the support frame 1 is greater than 0.

In this embodiment, the bird preventer for overhead transmission lines described in the utility model can be fixed on the position where birds are easy to build nests and above the insulator string. When the birds step on or touch the reflective plate 4, the reflection The plates 4 can rotate to scare the birds away, so that the birds cannot build nests here. The support base 2 of the support frame 1 can also play a role in preventing bird droppings from falling on the insulator strings, and the wind wheel 5 rotates At this time, the wind wheel 5 can drive the reflector plate 4 to rotate, because the birds are afraid of strong light and moving objects, so it will startle the surrounding birds away.

Embodiment 3: The difference between this embodiment and the bird preventer for overhead transmission lines described in Embodiment 1 or Embodiment 2 is that N is an integer greater than or equal to 5.

The structure of the bird preventer for overhead transmission lines described in the utility model is not limited to the specific structures described in the above-mentioned embodiments, but can also be a reasonable combination of the technical features described in the above-mentioned embodiments.

Claims (3)

1. A bird preventer for overhead transmission lines, characterized in that it includes a support frame (1), N rotating shafts (3) and N reflective plates (4); said N is a positive integer; The longitudinal section of the support frame (1) is concave, N through holes are provided on the front and rear side walls of the support frame (1), and the through holes on each side wall are evenly distributed along a straight line, And the through-holes on the two side walls are oppositely arranged, and the distance between two adjacent through-holes on each side wall is greater than the width of the reflective sheet (4), N rotation shafts (3) respectively pass through N pairs of through holes formed on the front and rear side walls of the support frame (1), the rotation shafts (3) are slidingly connected with the through holes, and the length of the rotation shafts (3) is longer than that of the support frame ( 1) the vertical distance between the front and rear side walls, The length of the reflective sheet (4) is less than the vertical distance between the front and rear two side walls of the support frame (1), the reflective sheet (4) is located between the front and rear two side walls of the support frame (1), N rotation axes ( 3) Fix on the centerlines of N reflectors (4) respectively, and ensure that the distance between two adjacent reflectors (4) is greater than 0, and the N rotation axes (3) in the same plane are parallel to each other set up. 2. A bird preventer for overhead transmission lines according to claim 1, characterized in that it also includes N wind wheels (5), the centers of the N wind wheels (5) are respectively rotated with the N One end of the shaft (3) is fixedly connected, and the distance between the wind wheel (5) and the side wall of the support frame (1) is greater than zero. 3. The bird preventer for overhead transmission lines according to claim 1 or 2, characterized in that said N is an integer greater than or equal to 5.