Three-layer crimping device

Abstract

The embodiment of the invention discloses a three-layer crimping device. The three-layer crimping device comprises a graphite cable grounding down conductor, a galvanized steel terminal board, and anintermediate connector, wherein the galvanized steel terminal board comprises a panel segment and a tail pipe, and the tail pipe further comprises an inner pipe and an outer pipe arranged in order; the device further comprises an intermediate crimping part, wherein the section of the crimping part is U-shaped; and an outer layer crimping pipe which is metal cylinder, wherein the intermediate crimping part accommodates multiple graphite lines extending out from the end part, multiple metal lines extending out from the end parts are arranged on the surface of the intermediate crimping part, andthe outer layer crimping pipe is sleeved on the outermost side and compressed; the inner pipe accommodates the outer layer crimping pipe and compresses the same; the outer pipe accommodates the one end, from which the metal wire extends out, of the graphite cable grounding down conductor and compresses the same. By implementing the crimping device disclosed by the embodiment of the invention, thereliable connection of the graphite cable grounding down conductor and the iron tower galvanized steel material can be realized, the strong breaking resistance, positioning performance and sealing performance are provided.

Description

technical field [0001] The invention relates to the application field of electric power technology, in particular to the structure of the middle connecting joint of graphite grounding cable. 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 belts. The flexible graphite composite grounding belts used in applications with large short-circuit currents must be mixed with a small amount of metal wires to increase the grounding belt. Hourly power frequency current withstand capability. This kind of grounding belt is covered with a layer of steel armor on the part of the exposed lead wire that is connected with the tower material to the buried ground to prevent the loss of graphite material and the external force damage of the grounding belt. When the double-layer galvanized steel flat tube compression method is...

AI Technical Summary

Problems solved by technology

When the double-layer galvanized steel flat tube compression method is used to make the terminal joint, the double-layer crimping space of the flat tube is not sealed, and the internal metal material corrodes under the action of the environment. At the same time, the pressure of the metal material will change with the temperature, resulting in metal-to-metal contact. Bad, the connection resistance increases, reducing the function of the entire grounding device

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