Tubular double-layer crimping device with steel armour

Abstract

The embodiment of the invention discloses a tubular double-layer crimping device with a steel armour. The device comprises a graphite cable grounding down conductor, a galvanized steel wiring board and an intermediate connector. The graphite cable grounding down conductor comprises the steel armour and graphite woven fabric from the outside in. The graphite woven fabric is wrapped by a number of graphite wires and metal wires. A number of metal wires extend out of the end part of the graphite cable grounding down conductor. The galvanized steel wiring board comprises a flat board section and atail pipe. An internal thread is arranged on the inner wall of the tail pipe. The intermediate connector comprises a crimping pipe. Lines are formed on the inner wall and the outer wall of the crimping pipe. The crimping pipe accommodates and presses one end of the graphite cable grounding down conductor, wherein the metal wires extend out from the end. The extending metal wires are folded back and laid on the outer surface of the crimping pipe. The tail pipe accommodates and presses the crimping pipe on which the metal wires are laid. According to the embodiment of the invention, reliable connection between the graphite cable grounding down conductor and galvanized steel of an iron tower is realized; the connection resistance of the crimping device is reduced; the sealing performance isimproved; and the friction between the crimping pipe and the tail pipe is improved.

Description

technical field [0001] The invention relates to the application field of electric power technology, in particular to a tubular double-layer crimping device with steel armor. Background technique [0002] At present, in order to solve the problems of corrosion and theft, the grounding device of transmission line poles and towers promotes the application of flexible graphite composite grounding cables. The flexible graphite composite grounding cables used in applications with large short-circuit currents must be mixed with a small amount of metal wires to increase the grounding cable. Hourly power frequency current withstand capability. This kind of grounding cable is still connected by the traditional galvanized steel pipe insertion and compression method when the terminal is connected to the tower material. If this traditional method is used to connect the grounding cable mixed with metal wires, the metals of the connecting parts cannot be in direct contact, but are sandwic...

AI Technical Summary

Problems solved by technology

If this traditional method is used to connect the grounding cable mixed with metal wires, the metals of the connecting parts cannot be in direct contact, but are sandwiched with graphite materials. In this case, the short-term power frequency current resistance The capacity cannot meet the design requirements, which seriously reduces the operation function of the whole device

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