66kv 120kv 220kv Hot Galvanized Electric Power Tower

Power tower introduction:

The power tower is a trapezoidal or triangular tower structure with a height of 25-40 meters. It is a steel frame structure. Power towers are mostly built near power plants and distribution stations in the field. They are important facilities in the power sector, can overhead power lines and play a role of protection and support. The design, manufacture, installation, maintenance and quality inspection of power tower are important guarantees for the operation and development of modern power system.

Tower classification:

1. High-voltage line tower is divided into tangent tower and tension tower. Corner tower is a kind of tension tower, and cathead tower is a kind of tangent tower.

2. Like the tangent tower, the insulator is a vertical hanging cathead tower, the tension tower, and the insulator is horizontal, which is used to prevent the loop tower from falling, line turning, etc.

3. The voltage depends on the number of insulators, 1-2 pieces: 10KV, 3-5 pieces, 35KV, 7 pieces of 110KV, 14-16 pieces of 220KV, 28 pieces of 500KV. If you see more, you don't need to count them. You can see the length roughly.
It is divided into:

4. Five types of wine cup, cat head, top type, dry type and barrel type

5. It can be divided into tension tower, tangent tower, angle tower, transposition tower (replacing conductor phase position tower), terminal tower and crossing tower according to the purpose.

66kv 120kv 220kv Hot Galvanized Electric Power Tower requirements:

The size and span of the tower must meet the circuit requirements: the necessary small safety distance should be kept between the conductor and the ground, buildings, trees, railways, highways, rivers and other overhead lines, between the conductor and the conductor, between the conductor and the lightning conductor. The protective angle of the lightning conductor to the conductor and the horizontal small distance between two lightning conductors when using double lightning conductors shall meet the relevant regulations.

Load:

The transmission line tower mainly bears wind load, ice load, line tension, dead load, the weight of personnel and tools during installation or maintenance, as well as the load of broken line and seismic action. The reasonable combination of these loads under different meteorological conditions shall be considered in the design. The dead load includes the weight of tower, line, fittings, insulator, the angle resultant force of the line, and the unbalanced tension along the line. Different countries have different regulations on the breaking load in terms of the number of broken wires (generally excluding the simultaneous breaking of conductors and lightning conductors), the size of the breaking tension and the meteorological conditions during the breaking.

The tower is generally simplified to static analysis. For dynamic loads such as wind, broken line and earthquake, the dynamic action is usually considered by multiplying the wind vibration coefficient, broken line impact coefficient and seismic force response coefficient respectively on the basis of static analysis.