A medium-voltage frequency conversion cable for ships

Abstract

The invention provides a medium-voltage frequency conversion cable for a ship. The medium-voltage frequency conversion cable comprises a conductor, an insulating layer, an inner shielding layer, an isolating layer, an outer shielding layer, a liner layer, an armor layer and a sheath layer which are sequentially arranged outwards from the center, wherein the inner shielding layer is a tinned copper wire totally-braid and composite aluminum-plastics tape inner shielding layer and has the coverage rate of 100 percent; the isolating layer is an extruded polyethylene isolating layer; the outer shielding layer is a galvanized steel wire braid and nylon tape outer shielding layer and has the coverage rate of 60 to 80 percent; and the armor layer is a tinned copper wire braid armor layer and has the braiding density of 84 to 88 percent. According to the medium-voltage frequency conversion cable for the ship, by adoption of braiding and shielding of double layers of different materials, the insulated isolating layer is extruded between the inner shielding layer and the outer shielding layer, so that the cable has a good shielding effect; and moreover, due to the shielding type, the interference of outside low-frequency and high-frequency signals on the cable and the interference of the cable on the outside can be well shielded.

Description

technical field [0001] The invention relates to a cable, in particular to a medium-voltage variable-frequency cable for ships. Background technique [0002] The continuous prosperity of the domestic shipbuilding industry is affected by the implementation of my country's ocean development strategy, and the domestic shipbuilding industry is facing a huge space for development. The development of my country's shipbuilding industry has brought many development opportunities to the marine cable industry and expanded the market size of the marine cable industry. At the same time, the upgrading of marine cables will further promote the rapid development of the market. The anti-interference ability and service life of the frequency conversion cables used by frequency conversion motors and other frequency conversion equipment on various river and sea ships, offshore oil and other water structures need to be improved to benefit production efficiency. [0003] Affected by the working ...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a marine medium-voltage frequency conversion cable to solve various important performances of the marine frequency conversion cable, such as flame retardancy, fire resistance, temperature resistance, waterproof, shielding performance, anti-interference ability and service life of the cable. More suitable for the needs of production use

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