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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

Inactive Publication Date: 2013-03-13
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 non-shield instrument cable for maritime oil and gas engineering and manufacturing method thereof
  • High-temperature-resistant soft non-shield instrument cable for maritime oil and gas engineering and manufacturing method thereof
  • High-temperature-resistant soft non-shield instrument 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 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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Abstract

The invention relates to a high-temperature-resistant soft non-shield instrument cable for maritime oil and gas engineering and a manufacturing method thereof. The cable is characterized in that a chemical cross-linked polyolefin insulation layer is extruded at the periphery of a 0.35-2.5mm2 tin-plated annealed stranded copper conductor to form an insulation wire core; every two insulation wire cores are twisted to form twisted wire groups, and all the twisted wire groups 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 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 aluminum hydroxide, 0.6-1 part of red phosphorus, and 0.05-0.1 part 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 an instrument cable, in particular to a high-temperature-resistant soft non-shielding instrument cable for offshore oil and gas engineering. The invention also relates to a method for manufacturing a high-temperature-resistant soft non-shielding instrument 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 sle...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01B7/00H01B7/02H01B7/04H01B7/29H01B7/17H01B7/22H01B7/28H01B7/282H01B7/295H01B13/00
Inventor 李永江陆云春
Owner JIANGSU YUANYANG DONGZE CABLE
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