CN203660276U - Gap lightning protection device - Google Patents

Abstract

The utility model discloses a gap lightning protection device, which comprises a piercing line clip composed of an upper piercing plate and a lower piercing plate, the upper piercing plate and the lower piercing plate are arranged separately, and the upper piercing plate and the lower piercing plate pass through a torsion nut One end of the lower puncture plate is provided with an arc-resistant electrode, and the arc-resistant electrodes are electrically connected with the lower puncture plate, and the lower puncture plate is fixed on the lower insulating cover, and the upper insulating cover and the lower insulating cover are flexibly connected. There is a grounding arc electrode below, and the grounding electrode is electrically connected to the grounding electrode. One end of the grounding electrode is provided with an insulator, and the insulator is provided with a creepage shed. The other end of the insulator is provided with an arc rod. The arc electrode is electrically connected through a soft insulated wire, and the lower end of the grounded arc electrode and the lower end of the arc rod form an arc gap A. Protect insulators and overhead insulated conductors from damage during lightning strikes.

Description

Gap lightning protection device

technical field

The utility model relates to a lightning protection device for overhead insulated wires, in particular to a gap

Lightning protection device.

Background technique

Power system such as 10kV or 20kV distribution overhead lines mostly use insulated overhead wires;

To prevent lightning from breaking overhead insulated conductors, insulators, puncture clamps, and insulated soft conductors connected between insulators and puncture clamps are often used. The puncture clamps are electrically connected to overhead insulated conductors, so that the potential of the insulator and the puncture clamp are the same. When lightning high-voltage discharge occurs, the arc root of the continuous power-frequency short-circuit current arc is fixed on the high-voltage electrode of the insulator and burns to protect the overhead insulated wire from being burned, but this structure will keep the arc root of the continuous-flow power-frequency arc on the insulator Burning on the high-voltage electrodes can easily cause damage to the insulators, thereby affecting the normal operation of the entire transmission circuit. In order to solve the above existing problems, people have been seeking an ideal technical solution.

Contents of the invention

The purpose of this utility model is to overcome the above shortcomings and provide a gap lightning protection device.

In order to achieve the above object, the utility model adopts the following technical solutions:

A lightning protection device for a gap, comprising a puncture line clip composed of an upper puncture plate and a lower puncture plate, the upper puncture plate and the lower puncture plate are arranged separately, and the upper puncture plate and the lower puncture plate are connected by a torque nut, and the lower puncture plate One end of the plate is provided with an arc-resistant electrode, and the arc-resistant electrodes are electrically connected with the lower puncture plate, and the lower puncture plate is fixedly arranged on the lower insulating cover, and the upper insulating cover and the lower insulating cover are movably connected, and a grounding device is provided directly below the arc-resistant electrode. The arc starting electrode, the grounding arc starting electrode is electrically connected with the grounding electrode, one end of the grounding electrode is provided with an insulator, the insulator is provided with a creepage shed, the other end of the insulator is provided with an arc starting rod, and the arc starting rod and the arc starting electrode pass through a soft The insulated wires are electrically connected, and the lower end of the grounded arc striking electrode and the lower end of the arc striking rod form an arc striking gap A. During installation, the arc-resistant electrode 2 is installed on the load side of the insulator, and the insulated wire 1 is snapped into the slot of the puncture clamp, so that the arc-resistant electrode is facing the insulator, and the arc-resistant electrode is facing away from the insulator, and then the arc-resistant electrode The exposed part of the arc electrode and the arc electrode is exposed outside the lower insulation cover. Adjust the distance between the lightning protection fitting and the ground electrode to about 100-120mm, tighten the torque nut on the upper puncture plate, and then snap the upper insulation cover into the lower Insulation cover.

In the above-mentioned gap lightning protection device, the grounding arc starting electrode or the arc starting rod are all fixed on the insulator by bolts, and the two ends of the insulator are respectively provided with a plurality of bolt holes for fixing the grounding arc starting electrode and the arc starting rod.

Adopting the above-mentioned technical features, the utility model has the following advantages: The puncture wire clip of the utility model penetrates the insulated wire to electrically connect the insulated wire with the arc-resistant electrode, an insulator is fixed at the grounding end, and the two ends of the insulator are connected with arc-starting gaps. Ground the arc striking electrode and the arc striking rod. The arc striking rod and the arc resisting electrode are electrically connected by flexible wires. When lightning strikes, the lightning arc energy can be induced to strike the arc from the overhead insulated wire through the puncture clamp and the insulated flexible wire in a short time. The rod breaks through the arc striking gap A, triggers an arc, and leads the lightning arc energy to the ground terminal of the insulator through the grounding arc striking electrode, thereby leading the lightning arc energy to the ground, and protecting the insulator and the overhead insulated wire from damage.

Description of drawings

Fig. 1 is the structural representation of the utility model.

Detailed ways

As shown in Figure 1, a gap lightning protection device includes a piercing wire clip composed of an upper piercing plate 3 and a lower piercing plate 5, the upper piercing plate 3 and the lower piercing plate 5 are separately arranged, and the upper piercing plate 3 It is connected with the lower puncture plate 5 through a torque nut 4, and one end of the lower puncture plate 3 is provided with an arc-resistant electrode 8, and the arc-resistant electrodes 8 are electrically connected with the lower puncture plate, and the lower puncture plate 3 is fixedly arranged on the lower insulating cover 7, and the upper insulated The cover 6 and the lower insulating cover are movably connected, and a grounding arc-starting electrode 14 is arranged directly below the arc-resistant electrode 2. The grounding arc-starting electrode 14 is electrically connected to the grounding electrode 10, and one end of the grounding electrode 10 is provided with an insulator 11, and on the insulator 11 A creepage umbrella skirt is provided, and the other end of the insulator is provided with an arc striking rod 13, which is electrically connected to the arc striking electrode 8 through a soft insulated wire 12, and the lower end of the grounding arc striking electrode 14 is connected to the lower end of the arc striking rod 13. The part forms the arc striking gap A. During installation, the arc-resistant electrode 2 is installed on the load side of the insulator, and the insulated wire 1 is snapped into the slot of the puncture clamp, so that the arc-resistant electrode is facing the insulator, and the arc-resistant electrode is facing away from the insulator, and then the arc-resistant electrode The exposed part of the arc electrode and the arc electrode is exposed outside the lower insulation cover. Adjust the distance between the lightning protection fitting and the ground electrode to about 100-120mm, tighten the torque nut on the upper puncture plate, and then snap the upper insulation cover into the lower Insulation cover.

The grounding arc starting electrode 14 or the arc starting rod 13 of the utility model are all fixed on the insulator 11 by bolts, and the two ends of the insulator 11 are respectively provided with a plurality of bolt holes for the grounding arc starting electrode 14 and the arc starting rod 13 to be fixed.

Claims (2)

1. a clearance lightning-proof protection device, it is characterized in that: comprise the penetrating cable clamp being formed by upper puncture plate (3) and lower puncture plate (5), upper puncture plate (3) and lower puncture plate (5) are split settings, and upper puncture plate (3) is connected by torque nut (4) with lower puncture plate (5), one end of lower puncture plate (3) is provided with are-tight electrode (8), are-tight electrode (8) is all electrically connected with lower puncture plate, lower puncture plate (3) is fixedly installed on lower insulating cover (7), upper insulating cover (6) is to be flexibly connected with lower insulating cover, under are-tight electrode (2), be provided with ground connection arc electrode (14), ground connection arc electrode (14) is electrically connected with grounding electrode (10), one end of grounding electrode (10) is provided with insulator (11), insulator is provided with creepage full skirt on (11), the other end of insulator is provided with striking torch (13), striking torch (13) is electrically connected by soft insulated conductor (12) with arc electrode (8), the bottom of the bottom of ground connection arc electrode (14) and striking torch (13) forms arcing gap A.

2. clearance lightning-proof protection device according to claim 1; it is characterized in that: it is upper that ground connection arc electrode (14) or striking torch (13) are all bolted insulator (11), the two ends of insulator (11) arrange respectively multiple for ground connection arc electrode (14) and the fixing bolt hole of striking torch (13).

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