Description:

When the overhead transmission line is in operation, it will be affected by the harsh environment, air flow changes, etc., and cause different conditions of vibration or dancing. For example, when the wind speed is 7 ~ 25m / s, the wire will produce a strong ellipse with a vertical ellipse of 0.1 ~ 1Hz and full amplitude of 12m. Such galloping will lead to serious accidents such as whipping wires, broken strands, broken wires, severe friction with gold fittings or rupture of pole towers, resulting in large-scale power outages, causing serious harm to society and people.

Our company has developed a patented product specifically for the above-mentioned wire galloping phenomenon, a quadruple split phase damping rotary spacer. This product is a device that maintains the quotient of the phase spacing of the wires and suppresses the fluctuation of the wires. In particular, it has a strong inhibitory effect on the low-frequency and large-amplitude galvanizing of the wire. Its structure mainly includes four-split slewing spacer rods, slewing arms, connecting plates, interphase insulation and other components.

Among them, the interphase spacer insulator not only plays a role of transmitting mechanical load between phases, but also plays a role of electrical isolation between phases. Due to the different installation methods of different lines and different weather conditions, the conductors between the phases will do different movements, so the whole device is complicated in force. Therefore, our company will generally require users to provide detailed technical conditions to adjust the product design, strive to manufacture the most optimized products, and require the standardization and professionalization of installation.

Applicable conditions:

This product is suitable for AC overhead lines with a voltage level of 330-500kV and a frequency of 50Hz. The sub-conductors are split in four, the sub-line spacing is 400/450 / 500mm, and the distance between phases can be up to 8 meters. ; The altitude of the installation site is 2000 meters and below; the ambient temperature is ± 40 ° C; the earthquake intensity cannot exceed 8 degrees.

Structural principle:

The interphase spacer rod is a sub-conductor spacer rod between (A and B) two-phase split conductors, which is connected by a center-rotatable damping method.

When the A-phase wire is dancing, it is restrained by the transmission of the phase-spaced bar, and the B-phase wire is restrained by this. The phase is not yet dancing. When phase A is dancing to a certain degree, the dancing power is transferred to phase B. At this time, B has a pinning power relative to phase A, so that the dancing of phase A is greatly reduced immediately.

At the same time, phase A also has the same effect on phase B. The reciprocating cycle of phase AB will not produce low-frequency large-amplitude gallops that have a destructive effect on the conductors, thereby suppressing the galloping of the conductors.