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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

Inactive Publication Date: 2014-12-10
JIANGSU YUANYANG DONGZE CABLE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The patent uses cross-linked polyethylene insulation, although the structure is simple and the cost is low, but it cannot meet the requirements of high temperature resistance, large current carrying capacity and multi-moisture erosion of offshore oil and gas engineering cables
[0004] The Chinese invention patent with the publication number CN101565527A discloses a 125°C irradiation cross-linked low-smoke halogen-free flame-retardant polyolefin sheathing material for oil platforms. Can be used for cable sheathing, poor insulation performance, not suitable as insulating material
[0005] The Chinese invention patent with the publication number CN102617923A discloses a radiation-crosslinked low-smoke, halogen-free and highly flame-retardant polyolefin insulating material, whose heat aging resistance is only 135°C. The temperature is 90°C, which cannot meet the high-temperature operating environment requirements of offshore oil and gas engineering cables

Method used

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  • High-temperature-resistant soft power cable for maritime oil and gas engineering and manufacturing method thereof
  • High-temperature-resistant soft power cable for maritime oil and gas engineering and manufacturing method thereof
  • High-temperature-resistant soft power cable for maritime oil and gas engineering and manufacturing method thereof

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Effect test

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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Abstract

The invention relates to a high-temperature-resistant soft power cable for maritime oil and gas engineering and a manufacturing method thereof. The power cable is characterized in that a chemical cross-linked polyolefin insulation layer is extruded at the periphery of a tin-plated annealed stranded copper conductor to form a power cable insulation wire core; a plurality of insulation wire cores are stranded to form a cable core; an inner sheath is extruded at the periphery of the cable core; the periphery of the inner sheath inner sheath inner sheath is coated with a copper alloy wire weaving armor layer; the periphery of the copper alloy wire weaving armor layer is wrapped with a water-proof wrapping tape; and an outer sheath is extruded at the periphery of the water-proof wrapping tape. The insulation layer is prepared from the following raw material components: 12 parts of ethylene / vinyl acetate copolymer, 6 parts of high density polyethylene, 2 parts of ethylene-methacrylic acid copolymer, 0.5-1 part of cross-linking agent DCP (Dicumyl Peroxide), 0.4-0.9 part of antioxidant 1076, 0.2-0.4 part of antioxidant DNP, 0.2-1 part of lubricant stearic acid, 25-30 parts of flame retardant aluminum hydroxide, 0.6-1 part of flame retardant red phosphorus, and 0.05-0.1 parts of ultraviolet ray absorber UV-326. The insulation layer of the cable is excellent in high-temperature resistance and ageing resistance, and long in service life.

Description

technical field [0001] The invention relates to a power cable, in particular to a high-temperature-resistant flexible power cable for offshore oil and gas engineering. The invention also relates to a method for manufacturing a high-temperature-resistant flexible power cable for offshore oil and gas engineering. Background technique [0002] With the exploitation of offshore oil and gas energy, there are more and more cables used in oil and gas engineering, and the performance requirements are getting higher and higher, especially the insulation and metal armor, which are the main components of the cable weight, need to be reduced to the greatest extent. The mechanical protection, the cables are suitable for the multi-moisture erosion and penetration of the oil and gas engineering environment, and the cables can operate safely for about 25 years. In the prior art, in order to reduce the weight of cables, almost all cables without inner sleeves or galvanized steel wire braids...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01B9/00H01B9/02H01B3/18H01B13/00
Inventor 李永江陆云春
Owner JIANGSU YUANYANG DONGZE CABLE
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