High-temperature-resistant soft power cable for maritime oil and gas engineering and manufacturing method thereof
The technology of a power cable and a manufacturing method is applied in the manufacturing field of high-temperature-resistant flexible power cables for offshore oil and gas engineering and high-temperature-resistant flexible power cables for offshore oil and gas engineering, and can solve the problem of being unable to meet the high-temperature operating environment requirements of offshore oil and gas engineering cables and the inability to meet High temperature resistance, large carrying capacity, moisture erosion, unsuitable insulating materials, etc., to achieve excellent anti-seawater corrosion performance, avoid melting dripping, and long service life
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Embodiment 1
[0023] Such as figure 1 As shown, the high-temperature-resistant soft power 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 outer periphery of a tinned annealed stranded copper conductor 1 to form an insulating wire core of a power cable. An insulated wire core is twisted to the right with a pitch ratio of 18 times to form a cable core, and an 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 , then wrap the waterproof tape 5 around the outer periphery of the copper alloy wire braided armor layer, and finally extrude the outer sheath 6 on the outer periphery of the waterproof tape 5.
[0024] Among them, the minimum thickness of the chemically cross-linked polyolefin insulating layer 2 is not less than 90% of the no...
Embodiment 2
[0028] The high-temperature-resistant flexible power 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 outer periphery of a tinned annealed stranded copper conductor 1 to form an insulating core of a power cable, and a plurality of insulating wires The core is twisted to the right with a stranded pitch ratio of 19 times to form a cable core, and 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 then The outer periphery of the copper alloy wire braided armor layer is wrapped with a waterproof tape 5 , and finally the outer sheath 6 is extruded on the outer periphery of the waterproof tape 5 .
[0029]Among them, the minimum thickness of the chemically cross-linked polyolefin insulating layer 2 is not less than 9...
Embodiment 3
[0033] The high-temperature-resistant flexible power 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 outer periphery of a tinned annealed stranded copper conductor 1 to form an insulating core of a power cable, and a plurality of insulating wires The core is twisted to the right with 20 times the stranded pitch ratio to form the cable core, and 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 then The outer periphery of the copper alloy wire braided armor layer is wrapped with a waterproof tape 5 , and finally the outer sheath 6 is extruded on the outer periphery of the waterproof tape 5 .
[0034] Among them, the minimum thickness of the chemically cross-linked polyolefin insulating layer 2 is not less tha...
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