Saying goes
Everyone has a love for beauty
People will choose some trinkets to decorate themselves
Attentive friends may find out
on transmission lines or power towers
Also "dressed" with some string or ball "trinkets"
What are they for?
Let's go, follow Xiao E to find out~
PART.01
"Bracelet" - insulator string
The strings of "bracelets" installed between the transmission line and the tower are actually a special kind of insulated power equipment. In the power sector, this is called "insulator string". It is composed of glass, ceramic or composite materials in series connection, mainly to insulate the wires from the tower.
With insulators, we can also identify the voltage level of the transmission line. In general, the longer the insulator string, the higher the voltage level of the transmission line.
PART.02
"Ring" - spacer rod
The ring-like "ring" installed between the wires is a kind of protective fitting, which mainly ensures the spacing of each sub-wire of the split wire and prevents the same phase sub-wire from being "entangled" together.
On weekdays, we see a single overhead conductor or multiple wires, depending on the voltage level required by the power system. This "loop" is used between multiple conductors, and one needs to be installed every 50 to 60 meters.
PART.03
"Hairpins" - anti-dance strings
A "hairpin" that resembles a headdress between conductors is also a type of spacer and is often used on transmission lines in areas prone to line movement, such as coastal areas.
The wind in these areas is strong, and the line dance is easy to occur, and the anti-dance string is installed between the different phase conductors of the same line, so as to reduce the line dance amplitude and avoid accidents such as line tripping, line disconnection and tower collapse.
PART.04
"Bow" - anti-vibration hammer
The anti-vibration hammer, shaped like a "bow", can absorb the energy generated by the breeze vibration of the wire, reduce the amplitude of the breeze vibration, and prevent the wire from loosening the fittings caused by vibration.
When the conductor pitch is greater than 120 meters, an anti-vibration hammer is generally installed. Anti-vibration hammers are usually hung on wires close to both sides of the insulator to ensure the safety of transmission lines.
PART.05
"Bouquet" - anti-bird thorns
Anti-bird stingers, which don't look like bouquets? This is a device developed to prevent birds from nesting in power towers. It is composed of steel wires, which are spread out and installed in the upper part of the cross arm of the line equipment tower.
Why should the transmission line be bird-proof? Because the bird's nest material will reduce the air gap, causing the line to trip, and the bird droppings are easy to form conductive channels, causing the air gap breakdown of the tower, or adhering to the insulator to cause destructive discharge, causing the line short circuit fault.
PART.06
"Little windmill" - bird guard
Many people wonder whether installing orange "small windmills" on electric poles or iron towers is to measure wind speed? In fact, this kind of "small windmill" is also a kind of bird arrester, called "windmill bird repellent".
When the wind blows, its reflectors flash and can scare away birds and prevent them from nesting in the area. This not only protects the safe operation of power lines, but also protects birds.
PART.07
"Little colored beads" - aviation warning balls
The colorful little balls on the wire are like small colored beads. This kind of small round ball is called aviation warning ball, which is a new type of high-voltage warning device, which provides visual warning for the sailing aircraft, mainly to prevent the occurrence of helicopter low-altitude contact with the high-voltage line.
The maximum diameter of the aviation warning ball is nearly 1 meter, and some aviation warning balls are also provided with light-emitting devices inside, which can play a better warning role at night.
After understanding the role of these "trinkets".
Don't you think they're important
Protect the security of the power grid
They're amazing