Halogen-free mud resistant medium voltage power cable for offshore oil platform and manufacturing method thereof

Abstract

The present invention discloses a halogen-free mud resistant medium voltage power cable for an offshore oil platform and a manufacturing method thereof. The cable comprises a coble core which is formed by twisting a plurality of insulated wire cores. The gap of the wire cores is provided with a halogen-free flame retardant glass fiber rope filling layer. A first wrapping layer with a halogen-free flame retardant glass fiber tape is overlapped outside the cable core. An inner sheath made from extruding thermoset radiation cross-linked halogen-free low-smoke flame retardant and mud resistant polyolefin is extruded outside the first wrapping layer. A tinned copper wire armored layer is rotatingly woven outside the inner sheath. A second wrapping layer with a halogen-free flame retardant glass fiber tape is overlapped outside the armored layer. An outer sheath made of thermoset radiation cross-linked halogen-free low-smoke flame retardant and mud resistant polyolefin is extruded at the outermost layer of the cable. The cable has flame retardant, halogen free, lead free, asbestos free, mud resistance, oil resistance, heat resistance, corrosion resistance and tensile characteristics and excellent electrical, mechanical and environmental protection functions, and the cable can be widely used in the power transmission system of an offshore oil platform.

Description

technical field [0001] The invention relates to the field of offshore power cables, in particular to a cable used for power transmission systems in places such as offshore oil platforms, ships, and warships, and a manufacturing method. Background technique [0002] In recent years, more than 50% of major global oil discoveries have come from offshore, especially in deep water areas. Deepwater oil resources are abundant and have great potential, which has become a hotspot of global oil exploration and exploitation. In the context of high oil prices, offshore, especially deep-sea oil exploration and development has become an investment hotspot for major international oil companies, and the offshore exploration and production market is in a stage of rapid development. The increasingly strong demand in the offshore exploration and production market has led to a shortage of special cables for offshore oil platforms. As the nerve center for power transmission on oil platforms, s...

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Problems solved by technology

[0003] However, for cables manufactured by traditional technology, the traditional oil platform cable production process suitable for offshore oil platform environment has the following problems: 1. Poor insulation performance leads to poor insulation and mechanical properties; 2. Common copper wire is used for conductors Stranding, poor corrosion resistance; 3. Inner and outer sheaths, filling materials have poor flame retardancy and mud resistance; 4. The structure is unreasonable, and the armor layer cannot be used as a channel to share the short-circuit current, and it does not have the function of double shielding

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