Anti-reverse power supply safety insulation protection device

Abstract

The invention discloses an anti-reverse power supply safety insulation protection device. The anti-reverse power supply safety insulation protection device comprises an insulation protection tube formed by buckling two semi-circular cylinders, a cable threading channel for holding a cable is formed at the center of the insulation protection tube, the insulation protection tube comprises a protection sleeve body formed by buckling two semi-circular shells, a fixed shell formed by inserting the two semi-circular cylinders and a locking shell formed by mutually slidingly inserting two semi-circular locking shells. The fixed shell and the locking shell are respectively sleeve and fixed at the two ends of the protection sleeve body through threads to allow the protection sleeve body to be usedfor hold the cable and to be fixedly and sleeve the outer wall of the cable, the diameters of the inner wall of the tail end of the fixed shell and the inner wall of the tail end of the locking shellare gradually decreased. The anti-reverse power supply safety insulation protection device is simple in structure, is convenient to dismount, mount and replace and can be reused, and is convenient tooperate when the insulation protection tube is dismounted to expose part of the bare cable core of the cable and the short-circuit discharge is performed, and therefore, the safety of workers is protected to a large extent.

Description

technical field [0001] The invention belongs to the technical field of electric power engineering, in particular to the technical field of high-voltage line maintenance and anti-fall power supply tools, and in particular to an anti-fall electric safety insulation protection device. Background technique [0002] In the transmission line below 10KV, when the power grid fails and the power grid needs to be inspected, maintained or repaired at heights, however, other circuit breakers in the power grid cannot be disconnected during the inspection, maintenance or repair process to prevent the power grid from being energized again Due to the phenomenon of reverse power supply on the power grid, even if other disconnection switchgears in the power grid are forcibly disconnected, the power grid will still be charged after the power supply system is shut down. Therefore, if there is no anti-fall power supply insulation protection device, then There will be very dangerous potential saf...

AI Technical Summary

Problems solved by technology

[0002] In the transmission line below 10KV, when the power grid fails and the power grid needs to be inspected, maintained or repaired at heights, however, other circuit breakers in the power grid cannot be disconnected during the inspection, maintenance or repair process to prevent the power grid from being energized again Due to the phenomenon of reverse power supply on the power grid, even if other disconnection switchgears in the power grid are forcibly disconnected, the power grid will still be charged after the power supply system is shut down. Therefore, if there is no anti-fall power supply insulation protection device, then There will be very dangerous safety hazards for the electric workers who are working

[0003] In order to eliminate the above potential safety hazards and prevent the discharge of the power grid or the re-energization of the power grid without affecting the detection, maintenance and emergency repair of the power grid, the three high-voltage transmission cables must be short-circuited. Peel off the outer insulation skin of the cable to expose the cable core, and then short-circuit discharge the three high-voltage transmission cables through a ring discharge device with a bare metal section to protect the safety of the workers. The outer insulating skin that has fallen off is bandaged and sealed. The cable core of the existing cable is sealed by using an insulating sleeve to cover the peeled outer insulating skin, and then wrapping the insulating sleeve on the cable with a metal wire. The electric protection sleeve is easy to be damaged prematurely, thereby destroying its original sealing and insulation, which may cause electric leakage and electric shock hazards. Even if the insulation sleeve is used to cover the cable after the maintenance is completed, it is easy to cause safety hazards such as fire and electric shock. , the safety performance of the insulating sleeve is low, it is easy to cause the surface of the cable core to oxidize, and the service life cannot be guaranteed. Moreover, when the power transmission cable is overhauled again, steps such as stripping the insulating sheath, grounding, and testing must be carried out. The casing is used for protection, and the operation is very troublesome. It is easy for the construction personnel not to carry out anti-fall power supply treatment in order to improve the maintenance speed, and to work in danger without any protective measures. Therefore, it is necessary to design a high safety performance and long service life. Anti-fall protection device is necessary

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