Wheel type bracket for bypass flexible cable of power distribution network and method for fixing residual cable

Abstract

The invention provides a wheel type bracket for a bypass flexible cable of a power distribution network and a method for fixing a residual cable. The wheel type bracket comprises an insulating bracketand a fixed base, wherein the insulating bracket is detachably connected with the fixed base; when the wheel type bracket is installed, the fixed base is fixed on an electric pole and then the insulating bracket is installed to allow the installation of the wheel type bracket to be easier and more save labor; the insulating bracket comprises a reel, the reel is provided with three annular groovesrespectively configured to allow three single-phase bypass cable to wind so as to avoid that different-phase flexible cables are extruded together and the insulation between phases is damaged due toover-current and overheat to cause interphase short circuit and improve the use safety of the wheel type bracket, and the fixed base comprises a chain cooperated with the electric pole and a locking device configured to lock the chain and the electric pole. The method for fixing a residual cable employs the wheel type bracket to make installation and operation of the wheel type bracket simple andlabor-saving, and the fixing of the residual cable is much safer and more reliable.

Description

technical field [0001] The invention relates to the technical field of cable brackets, in particular to a wheeled bracket used for distribution network bypass flexible cables and a method for fixing residual cables. Background technique [0002] With the continuous development of my country's economy, urban construction has brought great challenges to the stability of electric energy. Users' requirements for continuous power supply are increasing day by day, and the live bypass operation of the distribution network can be connected to the distribution network through the access of bypass equipment. The load in the power grid is transferred to the bypass system to realize power outage maintenance of the equipment to be repaired and maintain uninterrupted power supply to users, and is widely used in the maintenance work of the distribution network. The safety and reliability of the bypass system during operation is the key to live bypass operation of the entire distribution net...

AI Technical Summary

Problems solved by technology

When the site bypass redundant flexible cable is long, the tray itself cannot accommodate more cable dragging parts, and cannot play the role of the tray to support the remaining cables and reduce the sag of the connection point

[0004] 2. When the power grid is combined without gaps during the bypass operation, if the unexpected circulation is large, it will cause the bypass flexible cable to overload and heat up and reduce the insulation performance. Since the iron metal tray itself does not have any insulation performance, bypassing may occur. Insulation breakdown caused by overheating of the outer layer of the flexible cable, single-phase grounding through the iron tray, or discharge of other phase bypass flexible cables in the iron tray simultaneously causes single-phase grounding and phase-to-phase short circuit, resulting in serious equipment or even personal accident

[0005] 3. The pole bypass flexible cable support in the form of insulating spacer, because it does not have the function of absorbing and carrying the remaining cables, and at the same time, the fixed point lock of the flexible cable is squeezed for a long time, there will be wear and tear on the insulation layer of the fixed point bypass flexible cable. Hidden dangers of equipment and personal accidents

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