A spiral blasting deicing device for transmission lines

Abstract

The invention relates to a spiral explosion type deicing device for power transmission lines, and belongs to the field of deicing maintenance equipment for the power transmission lines. According to the invention, a drill and a driving mechanism are adopted to drive a device body to be inserted into an ice coating layer, and an ice layer is crushed by the aid of an explosion device dragging behind the device body, and the deicing effect is ensured. The spiral device body is wound on a power transmission line, so that the running track is ensured to be spiral. The spiral explosion type deicing device is simple in structure, the drill and the driving mechanism in the device body are mechanically driven so as to avoid damages caused by explosion which is possibly generated by adoption of electrical components, and the safety and the stability of the equipment are ensured.

Description

technical field [0001] The invention belongs to the field of deicing maintenance equipment for transmission lines, and in particular relates to a spiral blasting type deicing device for transmission lines. Background technique [0002] Transmission lines are usually erected in an open field environment. When the ambient temperature drops in winter, the moisture in the air will condense on the transmission line to form icing, and the icing of transmission lines will cause the following hazards: [0003] (1) Damage to the tower. If the line is covered with ice too thick, the mechanical load of the tower will be overloaded and broken. [0004] (2) Line tripping. For lines with vertically arranged conductors, when the ice coating on the lower conductors falls off first (the ice coating on the conductors does not necessarily fall off at the same time), the conductors will rise rapidly or jump up and down, causing a phase-to-phase short circuit, causing the line switch to trip a...

AI Technical Summary

Problems solved by technology

For lines with vertically arranged conductors, when the ice coating on the lower conductors falls off first (the ice coating on the conductors does not necessarily fall off at the same time), the conductors will rise rapidly or jump up and down, causing a phase-to-phase short circuit, causing the line switch to trip and power supply to interrupt

[0005] (3) The insulator string is inclined and the wire is seriously drooping

In the span where the ice is too thick, it will cause the wire to droop seriously and cause a grounding accident

[0006] (4) After the insulator string is covered with ice, the insulation performance will be greatly reduced

When the hanging insulator string is covered with ice and melts, icicles may be formed, short-circuiting the insulator string and causing a grounding accident

[0007] At present, there are mainly two types of risk removal methods: ice melting and mechanical deicing. Among them, the ice melting method is to heat the transmission line to achieve ice melting. heat generation), short-circuit ice melting (suitable for three-phase power transmission lines), high-frequency excitation ice melting (using the skin effect of high-frequency high-voltage electricity to cause resistance loss and heat on the transmission line to melt ice), using The deicing method inevitably requires a certain degree of transformation of the transmission line, and requires a large amount of energy for heating, and the cost and difficulty of deicing are high; while mechanical deicing is mainly carried out by equipment installed on the transmission line. The main method is to use knocking, shaking or blasting. The problem is that the area where the transmission line is located is generally strong wind, and the equipment is deflected by the wind, making it difficult to work effectively. The thicker ice layer on the transmission line is crushed, which makes the deicing work less effective and difficult to achieve the expected effect. The blasting method needs to fix the blasting body on the ice layer in advance, and the blasting method is external blasting, which has limited deicing effect and low efficiency.

Images