Low-smoke halogen-free light intrinsically-safe instrument flexible cable for ocean engineering

Abstract

The invention discloses a low-smoke halogen-free light intrinsically-safe instrument flexible cable for ocean engineering, which belongs to the field of cables. The low-smoke halogen-free light intrinsically-safe instrument flexible cable comprises a cable core, wherein the cable core is formed by four rectangularly distributed unit cables and a filling material on the periphery of the unit cables which are twisted together; each unit cable comprises a core conductor with an insulating layer, a unit shielding layer, a unit wrapping layer and an internal current introducing wire; the unit shielding layer is wrapped outside the pair-twist core conductor with an insulating layer, an internal current introducing wire is arranged on the inner side of the unit shielding layer, and the unit wrapping layer is wrapped outside the unit shielding layer; and an internal wrapping layer is arranged outside the cable core, an integral shielding layer wrapped by an aluminum-foil polyester compound band is arranged outside the internal wrapping layer, the inner side of the integral shielding layer is provided with an external current introducing wire, an external wrapping layer is arranged outside the integral shielding layer, an internal protective sheath is arranged outside the external wrapping layer, an armored layer knitted by tinned wires is arranged outside the internal protective sheath, and an external protective sheath is arranged outside the armored layer. The cable has the advantages of compact structure, convenient laying, small occupation space and superior overall performance, and can be safely used in ocean engineering.

Description

technical field [0001] The invention relates to a cable, in particular to a multifunctional cable for ships and ocean engineering. Background technique [0002] In ship and ocean engineering, the cable laying environment is narrow, and the use environment and place have the characteristics of humidity, saltiness, and high electromagnetic interference. Therefore, the requirements for the cables used are relatively high. Instrument cables are generally arranged separately and wired independently, which occupies a large space, the protection of the cables is weak, and the reliability of use is poor. When multi-channel instrument signals with different functions are combined in an integral cable, the mutual magnetic field and electric field interfere with each other, resulting in large loss on the signal line and easy loss of signals, so that there is no multi-channel instrument in the prior art. The fundamental reason for the combination of signals in one cable is the mutual i...

AI Technical Summary

Problems solved by technology

[0002] In ship and ocean engineering, the cable laying environment is narrow, and the use environment and place have the characteristics of humidity, saltiness, and high electromagnetic interference. Therefore, the requirements for the cables used are relatively high. Instrument cables are generally set separately and wired independently, which occupies a large space, the protection of the cables is weak, and the reliability of use is poor.

When multi-channel instrument signals with different functions are combined in an integral cable, the mutual magnetic field and electric field interfere with each other, resulting in large loss on the signal line and easy loss of signals, so that there is no multi-channel instrument in the prior art. The fundamental reason for the combination of signals in one cable is the mutual interference of electromagnetic signals, which makes the overall performance of the cable fail to meet the electrical requirements such as electromagnetic compatibility.

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