CN202796220U - Composite cable for offshore oil platform - Google Patents

Abstract

The utility model discloses a composite cable for an offshore oil platform, which comprises three large conductors, two small conductors and insulating layers. Each of the three large and two small conductors is wrapped in one flame-retardant crosslinked polyolefin insulating layer; after wrapped and insulated, the two small conductors are intertwisted and then lapped, braided and shielded to form a line pair, and the line pair is intertwisted and bundled with the three large conductors to form a cable core; the bundled cable core is wrapped in a belting layer, wherein flame-retardant fiber glass ropes as a filling layer are arranged between the belting layer and the insulating layers; the belting layer is wrapped in an inner lining layer; the inner lining layer is wrapped in an armored layer, wherein the armored layer employs large-size thick galvanizing steel wire for armoring, and the maximum armoring gap of the thick steel wires is no more than 2.5mm; asphalt smearing is carried out; and the armored layer is wrapped in a high-flame-retardation low-smoke halogen-free oil-slurry-resistant polyolefin sheath layer. The composite cable for the offshore oil platform provided by the utility model satisfies low-smoke, halogen-free, flame-retardant and other performance indexes for offshore oil platform cables, and at the same time solves oil resistant and slurry resistant problems.

Description

Composite cable for offshore oil platform

technical field

The utility model relates to the cable industry, in particular to a composite cable for offshore oil platforms. the

Background technique

The development of my country's oil platform series cables started in the 1980s. Under the upsurge of developing my country's offshore oil resources, Shanghai Cable Factory, Shenyang Cable Factory, Hongqi Cable Factory and other factories capable of manufacturing marine cables at that time had all developed cables for offshore oil platforms. However, at that time, the large platforms drilling and producing oil in my country's waters were basically foreign platforms, and the small platforms were domestically produced. Even domestic manufacturers propose to use foreign cables, while domestic cables are almost completely rejected. the

Due to the high technical performance requirements of oil platform cables, domestic research and development started relatively late. In order to realize the localization of special cables for oil drilling facilities, domestic cable factories refer to the military standard GJB1916-94 "General Specifications for Low Smoke Cables and Cords for Ships", Norwegian Electrical Standard NEK606-2009 "Halogen-free/mud-proof for offshore platforms Cable", the American Institute of Electrical Engineers standard IEEE 45-1998 "IEEE Recommended Regulations for Electrical Equipment for Ships" and the requirements of the American SURPENANT company DAA-1048B technical specification have successfully developed 2000V and below offshore oil and ship power cables, initially realized The localization of oil platform and ship cables has been promoted. the

The problem of oil resistance and mud resistance in the actual working environment of traditional composite cables for offshore oil platforms has always been a difficult problem. the

Utility model content

The utility model provides a composite cable for an offshore oil platform, which satisfies performance indicators such as low smoke, halogen-free, flame retardant and the like of the offshore oil platform cable, and meanwhile, the cable also solves the problems of mud resistance and oil resistance. the

The scheme of the utility model is as follows: a composite cable for offshore oil platforms, including three large conductors, two small conductors, and an insulating layer, and the outer sides of the three large conductors and two small conductors are respectively wrapped with flame-retardant cross-linked polyolefin Insulation layer, two small conductors are wrapped and insulated, twisted and twisted, and wrapped and braided to form a wire pair group. The wire pair group is twisted with three large insulated wire cores to form a bundle. After the bundle is wrapped, the outside of the cable core is wrapped with a tape layer. A flame-retardant glass fiber rope is provided between the tape layer and the insulating layer as a filling layer, the outside of the tape layer is wrapped with an inner liner, and the outside of the inner liner is wrapped with an armor layer. The armor layer is armored with large-scale thick galvanized steel wire, the maximum gap between the thick steel wire armor is no more than 2.5mm, and it is treated with asphalt. The outside of the armor layer is wrapped with high flame-retardant, low-smoke, halogen-free, oil-resistant and mud-resistant Polyolefin jacket. the

The cross-sectional area of the large conductor is 25-300mm ² , and the cross-sectional area of the small conductor is 1.0mm ²

The tape layer is formed by overlapping and wrapping a layer of aluminum tape. the

The shielding of the wire pair group is braided with tinned copper wire. the

The armored layer of the utility model adopts a wire core composite structure, three large conductors are used for power transmission, two small conductors are used for signal transmission, and are protected by separate shielding to reduce the interference of external electromagnetic waves, and the armored layer is thickly galvanized Steel wire armor, large steel wire size, high hardness, has very good mechanical damage prevention properties, coated with asphalt can effectively prevent seawater from corroding and embrittlement of steel wires, and uses flame-retardant cross-linked polyolefin material as insulation, which has excellent flame-retardant properties performance; when the cable material is burned, the halogen gas and gas aqueous solution have low pH and conductivity, and have low corrosion performance; when the cable is burned, it generates less smoke, and has wear resistance, tear resistance, oil resistance, ozone resistance, corrosion resistance, and Mud, high flame retardant and other properties. the

Description of drawings

Fig. 1 is the structural representation of the utility model. the

Detailed ways

Below in conjunction with accompanying drawing, the utility model is further described. the

A composite cable for an offshore oil platform, comprising three large conductors 1, two small conductors 2, and an insulating layer 3, the outer sides of the three large conductors 1 are respectively wrapped with an insulating layer 2, and the outer sides of two small conductors 2 are respectively wrapped with an insulating layer 3, After wrapping the insulating layer 3, the two small conductors 2 are twisted in pairs, and then braided with tinned copper wires to form a pair group 4. After wrapping the insulating layer 2, two large conductors 1 are twisted with the pair group 4 to form a bundle. The outside is wrapped with a tape layer 5, and a flame-retardant glass fiber rope is provided between the tape layer 5 and the insulating layer 2 as a filling layer 6. The outside of the tape layer 5 is wrapped with an inner lining layer 7, and the armor layer 8 is thickly plated Zinc steel wires, galvanized steel wires are coated with asphalt 9 in the gaps, and the outer side of the armor layer 8 is wrapped with a high flame-retardant, low-smoke, zero-halogen, oil-sludge-resistant polyolefin sheath layer 10 . the

In a specific implementation, the cross-sectional area of the large conductor is 25-300 mm ² , and the cross-sectional area of the small conductor is 1.0 mm ² . The insulation layer 2 is made of flame retardant cross-linked polyolefin, the tape layer 5 is made of overlapping layers of tape, and the inner lining layer 7 is made of extruded polyolefin material with high flame retardant, low smoke, halogen-free and oil-sludge resistance.

Although the specific embodiments of the present invention have been described and illustrated in detail above, it should be noted that we can carry out various equivalent changes and modifications to the above-mentioned embodiments according to the concept of the present invention, and the functional effects produced by it If it still does not exceed the spirit covered by the specification and drawings, it should be within the protection scope of the present utility model. the

Claims (4)

1. offshore oil platform composite cable, comprise three large conductors and two little conductors, insulating barrier, it is characterized in that: described three large conductors and two little conductor outsides are enclosed with respectively the flame-proof cross-linking polyolefin insulation layer, carry out pair twist after two little conductor wrap insulate and carry out wrapped braid shielded forming line to group, line is to group and three stranded bunchys of large insulated wire cores, the cable core outside is enclosed with belting layer behind the bunchy, be provided with the flame retardant type glass cord between described belting layer and the insulating barrier as packed layer, the described belting layer outside is enclosed with inner covering, the described inner covering outside is enclosed with armour, described armour adopts large specification lagging cover zinc wire armoring, thicker wire armouring maximal clearance is no more than 2.5mm, and smear bitumen treatment, the described armour outside is enclosed with the high flame resistance, low smoke Halogen oil resistant polyolefin jacket of anti-mud layer.

2. a kind of offshore oil platform composite cable according to claim 1 is characterized in that: described large cross-sectional area of conductor is long-pending to be 25～300mm ², little cross-sectional area of conductor is long-pending to be 1.0mm ²

3. a kind of offshore oil platform composite cable according to claim 1 is characterized in that: the overlapping wrapped formation of described belting layer employing one deck aluminium strip.

4. a kind of offshore oil platform composite cable according to claim 1 is characterized in that: the shielding employing tinned copper wire braiding of described line to organizing.