Lightning protection cables for communication base stations

Abstract

The invention belongs to the technical field of cables, and relates to a lightning protection cable for a communication base station, which includes a cable core, an inner sheath, an armor layer, an outer sheath, a grounding layer, a connecting rib, a suspension wire, and a suspension wire sheath; it is characterized in that the cable core The outer cover is covered with the first protective layer, the inner sheath is extruded and coated outside the first protective layer, the inner sheath is covered with the second protective layer, the grounding layer is located outside the second protective layer, and the armored layer covers Covered outside the grounding layer, the outer sheath is extruded and coated outside the armored layer; the armored layer is a single-sided coated steel strip, and the surface of the armored layer in contact with the grounding layer is the non-coated surface; the first and second The protective layer is mica tape; the outer sheath is composed of the following raw materials by weight: 71 parts of polyethylene, 1010:1 part of antioxidant, 12 parts of aluminum hydroxide, 0.5 part of HK type antistatic agent, ethyl acetate 3 parts, 1 part of carbon black, 10 parts of zirconia, 1.5 parts of polyethylene wax. The invention has the following main beneficial effects: simple manufacture, fast production speed, lower resistivity of the grounding layer, lower maintenance cost, less dust adsorption, higher pressure resistance and better flame retardancy.

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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