Oil gas damping ant-galloping device

Abstract

The invention discloses an oil gas damping anti-galloping device which comprises a sleeve, a rod barrel and an outer cylinder barrel, wherein the rod barrel is positioned inside the sleeve; a piston is arranged in the rod barrel; the piston divides the rod barrel into a gas filling cavity for filling a gas and an oil filling cavity for filling damping oil; a piston rod is arranged on the piston, goes through one end of the rod barrel and is positioned in the oil filling cavity; a communication channel communicating the gas filling cavity with the oil filling cavity is arranged on the piston rod; a bottom plate is also arranged on the sleeve; the piston rod is fixedly connected with the bottom plate; the outer cylinder barrel extends into the sleeve from the bottom plate and is fixedly connected with the rod barrel; a hanging plate connected with an insulator string ball is arranged at the top of the sleeve; and a connection end connected with a wire is arranged on the outer cylinder barrel. The anti-galloping device disclosed by the invention can effectively absorb external force to reduce wire galloping; by coating the surfaces of the sleeve, the outer cylinder barrel and the hanging plate with a hydrophobic insulating coating, an anti-icing effect is realized, the damage of a transmission line caused by icing aggravated galloping is avoided, and the safe and reliable operation of the transmission line is guaranteed.

Description

technical field [0001] The invention relates to a power grid device, in particular to an oil-gas damping dance preventer. Background technique [0002] In autumn and winter, there will be icing problems on transmission lines. Icing has two main impacts on transmission lines. One is to affect the mechanical characteristics of lines and towers, and the other is to affect the electrical performance of lines. When the wind in the horizontal direction blows to the transmission wire, the cross-section of the wire is a winged cylindrical shape due to the icing on the surface. Due to the high density of rime ice and strong adhesion, it is not easy to fall off. When the wire and the tower are on the When the amount of ice coating reaches a certain level, it will exceed the maximum mechanical load of the line design. Under certain conditions, the ice-coated transmission line will have low-frequency and large-scale galloping, which will easily cause disconnection, tower collapse, hardw...

AI Technical Summary

Problems solved by technology

[0003] In order to solve the problem of galloping in transmission lines, there are many anti-galling devices available in the technology, but these devices have their own limitations

For example, interphase spacers are widely used, but there are problems such as aging, bending, and discharge. The detuning pendulum has a certain effect on a single wire, but it is not suitable for multi-split wires. Shock absorbers are only compared to low-frequency galloping. Effective, spoiler anti-dance devices are more commonly used in areas with thinner ice, and are mostly used on single conductors, with relatively large limitations

[0004] Because icing will aggravate the damage caused by galloping to transmission lines, in the prior art, hydrophobic materials are usually coated on the surface of wires, insulators or anti-galling devices, so that the surface of wires, insulators or anti-galling devices is not easy to form in wet weather. Icing, but the current hydrophobic coating generally has the problem of poor hydrophobicity and poor adhesion on the surface of wires, insulators or anti-dancing devices

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