Lightning protection photoelectric composite cable, grounding layer, armoured layer and manufacturing methods for grounding layer and armoured layer

Abstract

The invention belongs to the technical field of a cable, and relates to a lightning protection photoelectric composite cable. The lightning protection photoelectric composite cable comprises a cable core, an inner sheath, an armoured layer, an outer sheath and a grounding layer, wherein the cable core comprises an optical unit and an electrical unit; the exterior of the cable core is coated with a first protective layer, the inner sheath, and a second protective layer; the grounding layer is arranged on the exterior of the second protective layer; the armoured layer is arranged on the exterior of the grounding layer; the outer sheath is arranged on the exterior of the armoured layer; the contact surface between the armoured layer and the grounding layer is a non-film-coated surface; the lightning protection photoelectric composite cable is characterized in that the grounding layer comprises a grounding conductor, a filling rod and a winding layer helically coating the exteriors of the grounding conductor and the filling rod; the grounding conductor and the filling rod are alternatively distributed on the exterior of the second protective layer; and the diameter of the filling rod is not greater than that of the grounding conductor. The invention also discloses manufacturing methods for a semifinished grounding layer and a semifinished armoured layer. The lightning protection photoelectric composite cable is applicable to communication base stations, and has the main following beneficial effects of simple manufacturing, high production speed, lower electrical resistivity of the grounding layer, lower maintenance cost, lower cost and lighter weight.

Description

[0001] The present invention is a divisional application for an invention patent titled: lightning protection photoelectric composite cable for communication base stations and its manufacturing method, application date: September 3, 2014, and application number: 201410442415.4. technical field [0002] The invention belongs to the technical field of cables, and in particular relates to a lightning-proof photoelectric composite cable, a ground layer semi-finished product, an armored layer semi-finished product and a manufacturing method thereof. 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 perfo...

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

[0005] The above deficiencies increase the maintenance cost after the cable lightning strike

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