Spacer wire chunk capable of maintaining torque characteristic in ice coating

Abstract

The invention discloses a spacer wire chunk capable of maintaining a torque characteristic in ice coating. The spacer wire chunk comprises a body frame, a spacer sleeve and a wire chunk, wherein a body on the body frame is connected with a cover plate to form an annular cavity; the wire chunk is arranged in the annular cavity of the body frame; the outer wall of the wire chunk and the inner wall of the annular cavity are respectively set as circular rings; the spacer sleeve is arranged between the outer wall of the wire chunk and the inner wall of the annular cavity; the body frame, the spacer sleeve and the wire chunk form a rotation pair; the wire chunk is adapted in the annular cavity rotatably; and flanges are arranged on the two outer sides of the annular cavity of the body frame. Byusing the spacer wire chunk, vibration, wire collision between wires, breeze vibration and subspan oscillation when overhead power transmission lines are ice-coated are inhibited so as to ensure power equipment safety.

Description

technical field [0001] The present invention relates to a kind of protective equipment in the power transmission line of electric overhead wire, especially relates to a kind of spacer wire clip that can maintain the torsion characteristic when the spacer is covered with ice. Background technique [0002] Existing wire chucks that are equipped with spacers used in overhead power wire transmission lines are usually non-rotatable, so as to prevent whipping between wires, wind vibration and sub-gap vibration in the power overhead wire transmission line. However, when the overhead line is icing, it will cause the overhead line to dance with a large amplitude below a few hertz. Once the dance occurs, it will seriously threaten the safe operation of the power grid and even cause major property losses. At present, there is also an anti-galling technology for the spacer bar rotary clamp, but its rotating joint is exposed, and it is very easy to freeze the rotating joint when it is co...

AI Technical Summary

Problems solved by technology

[0002] Existing wire chucks that are equipped with spacers used in overhead power wire transmission lines are usually non-rotatable, so as to prevent whipping between wires, wind vibration and sub-gap vibration in the power overhead wire transmission line. However, when the overhead line forms icing, it will cause the overhead line to flutter with a large amplitude below a few Hz. Once the flutter occurs, it will seriously threaten the safe operation of the power grid and even cause major property losses.

At present, there is also an anti-galling technology for the spacer bar rotary clamp, but its rotating joint is exposed, and it is very easy to freeze the rotating joint when it is covered with ice, which will make the torsion function of the rotating joint invalid.

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