Explosion-proof device for high-voltage cable terminal

Abstract

The invention discloses an explosion-proof device for a high-voltage cable terminal, which adjusts the overall length of the explosion-proof device through an upper fixing sleeve and a lower fixing sleeve with the spacing being adjustable, and cooperates with a small dry powder fire extinguishing ball to effectively suppress the flame. The explosion-proof device for the high-voltage cable terminalis characterized in that one ends of a plurality of outer supporting rods are vertically arranged on the lower fixing sleeve, the plurality of outer supporting rods are distributed at equal angles, the other ends of the outer supporting rods vertically extend upwards, a plurality of outer protective ribs are spirally wound on the outer supporting rods at equal angles, one ends of the outer protective ribs are connected with the lower fixing sleeve, one ends of a plurality of inner supporting rods are vertically arranged on the lower fixing sleeve, the plurality of inner supporting rods are distributed at equal angles, the inner supporting rods are located in a circle defined by the plurality of supporting rods, the other ends of the inner supporting rods vertically extend upwards, the plurality of inner protective ribs are spirally wound on the inner supporting rods and located between the outer supporting rods and the inner supporting rods, one end of each inner protective rib is connected with the lower fixing sleeve, and a plurality of placing sleeves are fixedly arranged on the inner supporting rods.

Description

technical field [0001] The invention relates to an explosion-proof device for a high-voltage cable terminal, which relates to an explosion-proof device for protecting a high-voltage cable terminal from explosion, and belongs to the field of electric equipment. In particular, it relates to a high-voltage cable terminal explosion-proof device that adjusts the overall length of the explosion-proof device through the upper and lower fixed sleeves with adjustable spacing, and cooperates with small dry powder fire extinguishing balls to effectively suppress the flame. Background technique [0002] Porcelain sleeve type cable lugs are widely used in high-voltage cable terminals due to their good self-cleaning performance and strong anti-aging performance. However, the electric porcelain sleeve of porcelain sleeve type cable lugs is a fragile material. It will produce a large number of explosive fragments, which are likely to cause serious damage to surrounding cables, equipment and...

AI Technical Summary

Problems solved by technology

[0002] Porcelain sleeve type cable lugs are widely used in high-voltage cable terminals due to their good self-cleaning performance and strong anti-aging performance. However, the electric porcelain sleeve of porcelain sleeve type cable lugs is a fragile material. It will produce a large number of explosive fragments, which are likely to cause serious damage to surrounding cables, equipment and even personnel, and affect the normal operation of the power system. Existing explosion-proof devices for cable terminals generally use a ring around the terminal The blocking structure blocks the explosion fragments, but the overall length of the blocking structure is fixed to the structure, and cannot be effectively adjusted according to the actual protection length of the terminal. At the same time, after the explosion produces a fire, the flame cannot be effectively suppressed or extinguished

[0003] The notification number CN208112198U discloses a high-voltage cable terminal explosion-proof device, including a top seat and a base, the cross-sections of the top seat and the base are both circular, and a plurality of circular arrays are arranged on the circumference of the lower end surface of the top seat. The upper mounting part of the base is provided with a lower mounting part opposite to the upper mounting part on the periphery of the upper end surface of the base. The middle part of the base is provided with a first through hole for the high-voltage cable terminal to pass through. The fixing groove at the head of the high-voltage cable terminal; it also includes insulating rods with the same number as the upper mounting parts, and the top end of each insulating rod is connected with the upper mounting part, and the bottom end is connected with the lower mounting part, so that multiple insulating rods cooperate to surround the high-voltage cable Terminal; the insulating rod includes an insulating rod body, and around the side wall of the insulating rod body, there are multiple sets of sheds arranged side by side in the axial direction, and the sheds protrude radially outward from the side wall of the insulating rod body, and the protective length of the device is fixed. It is impossible to make convenient adjustments according to the actual needs of the installation, and at the same time, it is impossible to deal with the fire caused by the explosion in a timely and effective manner

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