Soft insulating sheath of wire

Abstract

The utility model discloses a soft insulating sheath of a wire. The sheath comprises a sheath body which is a hose, and more than three boss ribs are arranged in the wall of the hose; a heat dissipation gap is formed between every two adjacent boss ribs; a pipe seam is formed in the wall of the hose; two connecting handles extend from two sides of the hose seam in the radial direction; when the two connecting handles relatively move to be attached to the two end faces of the pipe seam, the boss ribs of the inner cavity of the hose define a positioning space used for positioning the wire; whenthe two connecting handles oppositely move to be separated from the two end faces of the pipe seam, the boss ribs of the inner cavity of the hose define an assembling space used for being matched withwire assembling; and connecting pieces used for connection are arranged on the two connecting handles. According to the invention, the problems of deformation, burnthrough, burnout and the like of the soft insulating sheath of the wire for preventing wind damage, bird damage and collision at high temperature due to the fact that heat cannot be uniformly diffused when the insulating sheath works on the wire are solved. The sheath plays an important role in guaranteeing safe and stable energy conveying.

Description

technical field [0001] The invention belongs to the technical field of power transmission and transformation, and relates to a wire insulating sheath. Background technique [0002] my country's overhead transmission lines mostly pass through inaccessible mountains and plains. For economic considerations, transmission and distribution lines have bare wires erected in these areas. Because there is no sheath, it is conducive to heat dissipation. And birds stay and cause guano to accumulate, causing wind damage and bird damage accidents, resulting in line leakage, flashover phenomenon, and potential safety hazards. [0003] The reason for the wind damage fault is that the strong wind is perpendicular to the direction of the line, which blows the wires away, and discharges when the distance from the tower components is less than the safe distance, resulting in a ground fault and tripping of the line. At present, the following measures are adopted in the project to address this si...

AI Technical Summary

Problems solved by technology

At present, the following measures are adopted in the project to address this situation: 1. Install two angle steels at the cross-arm head, install a string of insulators on the outside after extending the cross-arm head, and pull the linear insulator strings outward to form an inverted right-angled triangle. This method is economical and effective, but it is difficult to install and construct; 2. Install a porcelain cross-arm at the position of the tower body and the conductor to support the conductor to balance the horizontal pressure of the wind. This method is less difficult to install and construct, and the effect is better. Well, it is more economical, but the construction of the wire and the original insulator is falsely loaded, and the design and processing are greatly affected by the length of the cross arm; 3. Install a stay wire outside the wire below to balance the horizontal pressure of the wind. It is economical, easy to install, and the effect is good, but the wire and the original insulator are fake, and the load is relatively large, which affects farmers' cultivation, and the safety and reliability are poor.

The above methods of preventing wind damage all have a disadvantage, that is, adding insulators while preventing wind, and increasing the possibility of tripping due to the failure of wind deflection insulators while preventing wind deflection. Therefore, it is a passive preventive measure and should be used less

[0004] The root cause of bird damage flashover faults is that birds perch, stay, and excrete bird droppings on the top of the iron tower cross-arm, or the foreign objects carried by the birds fall above the jumper wires of the strain tower and the wires of the straight tower, which short-circuits part of the air insulation The distance between the charged body and the ground (pole tower) cannot meet the requirements of the corresponding voltage level, resulting in the breakdown of the gap between the wires, fittings, voltage equalizing rings, etc. Horizontal gap breakdown fault caused by jumper V string lower voltage equalizing ring and tower body

At present, the installation of anti-bird thorns used in the project has played a lot of roles, but too many installations will affect the maintenance of the line, and the accidents of line trips caused by the falling of the anti-bird thorns rarely occur; The effect of repelling birds will also be lost over time; the effect of painting red paint is not good; the installation of a large plate through the umbrella plate has a certain effect, but due to the large area around the insulator of bird damage, it cannot be completely prevented

[0005] The main cause of impact failure is that the external environment causes the wire load to exceed its maximum allowable bearing capacity

Faults such as wire breakage and short circuit

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