Lightning-proof cable for communication base station

Abstract

The invention belongs to the technical field of cables, and relates to a lightning-proof cable for a communication base station. The lightning-proof cable comprises a cable core, an inner jacket, an armor layer, an outer jacket, a ground layer, a connecting rib, suspension wires and a suspension wire protecting layer, and is characterized in that the cable core is wrapped with a first protective layer; the inner jacket wraps the first protective layer through extrusion moulding; the inner jacket is wrapped by a second protective layer; the ground layer is positioned outside the second protective layer; the armor layer wraps the ground layer; the outer jacket wraps the armor layer through extrusion moulding; the armor layer is a steel belt with one surface coated with a film; the surface, in contact with the ground layer, of the armor layer is not coated with a film; the first protective layer and the second protective layer are mica tapes; the outer jacket is prepared from following raw materials in parts by weight: 71 parts of polyethylene, 1 part of an antioxidant 1010, 12 parts of aluminium hydroxide, 0.5 part of an HK-type antistatic agent, 3 parts of ethyl acetate, 1 part of carbon black, 10 parts of zirconium oxide and 1.5 parts of polyethylene wax. The lightning-proof cable has the main benefits as follows: the lightning-proof cable is easy to manufacture, high in production speed, lower in resistivity of the ground layer, lower in maintenance cost, smaller in dust adsorption, higher in pressure resistance and better in flame retardance.

Description

[0001] This application is a divisional application for an invention patent with the application number: 201310269250.0, the name: lightning protection cable for communication base stations, and the application date is July 1, 2013. technical field [0002] The invention belongs to the technical field of cables, in particular to lightning protection cables for communication base stations. Background technique [0003] In the past 20 years, my country's information industry has grown at an average annual rate of 25%, ahead of other industries, and has become the first pillar industry in the industry. It is estimated that in the next 10 years, the information industry will double again. Among the products in the communication industry, special lightning protection optical cables for communication with higher safety performance will have a good market prospect. With the construction of the 3G network communication network, the lightning protection measures of the communication...

AI Technical Summary

Problems solved by technology

However, they still have the following deficiencies: (1) the ground layer adopts the method of oblique wrapping, and the production speed is slow; (2) the armor layer only plays the role of armor, (3) after being struck by lightning, the part of the cable The grounding layer is blown, so that the inner sheath melts in the cable core interval and the insulated cores are integrated, making it difficult to separate the insulated cores; it can only be disposed of as waste

The above deficiencies increase the maintenance cost after the cable lightning strike

[0005] In addition, because most of the lightning protection cables for communication base stations are located in the base station, and the base station is usually installed outdoors and is not frequently maintained, a large amount of dust will be absorbed on the cable, which will cause inconvenience to maintenance; in addition, the base station has a large number of Therefore, the temperature inside the base station is generally high, so the outer sheath of the cable is required to have high temperature resistance

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