High-temperature-resistant soft non-shield instrument cable for maritime oil and gas engineering and manufacturing method thereof
A kind of instrument cable, high temperature resistance technology, used in cable/conductor manufacturing, insulated cable, bendable cable and other directions, can solve the problem that can not meet the high temperature operating environment requirements of offshore oil and gas engineering cables, can not meet high temperature resistance, large current carrying capacity and more moisture Corrosion, unsuitable insulation materials, etc., to achieve excellent anti-seawater corrosion performance, avoid melting and dripping, and long service life
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Embodiment 1
[0023] Such as figure 1 As shown, the high-temperature-resistant soft unshielded instrument cable for offshore oil and gas engineering of the present invention is manufactured according to the following steps: extruding a chemically cross-linked polyolefin insulating layer 2 on the periphery of a tinned annealed stranded copper conductor 1 of 0.35 mm to form an insulating core , the insulated wire cores are twisted in pairs to form a twisted group, the twisted pitch of each paired group is not greater than 120mm and all twisted groups adopt different twisted pitches, and all twisted groups are twisted with 16 times The joint diameter ratio is twisted to the right to form the cable core, and then the inner sheath 3 is extruded on the outer periphery of the cable core, and the outer periphery of the inner sheath 3 is covered with a copper alloy wire braided armor layer 4, and the copper alloy wire braided armor layer The outer periphery of the layer 4 is wrapped with a waterproo...
Embodiment 2
[0028] The high temperature-resistant soft unshielded instrument cable for offshore oil and gas engineering of the present invention is manufactured according to the following steps: 1.25 mm 2 tinned annealed stranded copper conductor 1 outer periphery extruded chemically cross-linked polyolefin insulating layer 2 to form an insulating wire core, the insulating wire core Twisted in pairs to form pairs, the pitch of each pair is not greater than 120mm and all pairs adopt different twist pitches, and all pairs are twisted with a pitch diameter ratio of 20 times The cable core is formed by right-hand twisting, and then the inner sheath 3 is extruded on the outer periphery of the cable core, and the outer periphery of the inner sheath 3 is coated with a copper alloy wire braided armor layer 4, and the outer periphery of the copper alloy wire braided armor layer 4 Wrap around the waterproof strap 5, extrude the outer sheath 6 on the periphery of the waterproof strap 5.
[0029]Amon...
Embodiment 3
[0033] The high temperature-resistant soft unshielded instrument cable for offshore oil and gas engineering of the present invention is manufactured according to the following steps: 2.5 mm2 tinned annealed stranded copper conductor 1 outer periphery extruded chemically cross-linked polyolefin insulating layer 2 to form an insulating wire core, the insulating wire core Twisted in pairs to form a twisted group, the twisted pitch of each paired group is not greater than 120mm and all twisted groups adopt different twisted pitches, and all twisted groups are twisted with a twisted pitch ratio of 24 times The cable core is formed by right-hand twisting, and then the inner sheath 3 is extruded on the outer periphery of the cable core, and the outer periphery of the inner sheath 3 is coated with a copper alloy wire braided armor layer 4, and the outer periphery of the copper alloy wire braided armor layer 4 Wrap around the waterproof strap 5, extrude the outer sheath 6 on the periphe...
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