CN202796109U - Converter cable for offshore petroleum platform - Google Patents

Abstract

The utility model discloses a frequency conversion cable for an offshore oil platform, which comprises a conductor and an insulating layer. The outer sides of the conductors are respectively wrapped with an insulating layer. After wrapping the insulating layer, the wire cores are arranged separately according to one large and one small, and then the wire cores are insulated. Twisted into bundles, the outside of the cable core is wrapped with a tape layer after bundled, a flame-retardant glass fiber rope is provided between the tape layer and the insulating layer as a filling layer, and the shielding layer is wrapped outside the tape layer. The shielding layer adopts copper wire braiding structure, the braiding density is not less than 90%, the outer side of the shielding layer is wrapped with an inner lining layer, the outer side of the inner lining layer is wrapped with an armored layer, and the outer armored layer is made of Large-scale thick galvanized steel wire armor, the maximum gap between the thick steel wire armor does not exceed 2.5mm, and it is treated with asphalt, and the outer side of the armor layer is wrapped with a flame-retardant, halogen-free, oil-resistant and sludge-resistant polyolefin sheath layer. The frequency conversion cable for offshore oil platforms provided by the utility model meets performance indicators such as low smoke, halogen-free, flame retardant and the like required by marine engineering cables, and meanwhile the cable also solves the problems of oil resistance and mud resistance.

Description

A frequency conversion cable for offshore oil platforms

technical field

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

Background technique

The development of my country's oil platform series cables started in the 1980s. In the development of my country's offshore oil resources

Under the surge of the upsurge, 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.

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 traditional frequency conversion cables for offshore oil platforms have always been difficult to solve the problem of oil resistance and mud resistance in the actual working environment.

Utility model content

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

The scheme of the utility model is as follows: a frequency conversion cable for an offshore oil platform, including a conductor and an insulating layer. The outer sides of the conductors are respectively wrapped with an insulating layer. The wire cores are twisted into bundles, and the outside of the cable core is wrapped with a tape layer after being bundled. A flame-retardant glass fiber rope is provided between the tape layer and the insulating layer as a filling layer, and the tape layer is wrapped with a shielding layer. Layer, the shielding layer adopts copper wire braiding structure, the braiding density is not less than 90%, the outer side of the shielding layer is wrapped with an inner lining layer, the outer side of the inner lining layer is wrapped with an armored layer, and the armored layer The layer is armored with large-scale thick galvanized steel wire, the maximum gap between the thick steel wire armor is not more than 2.5mm, and it is treated with asphalt, and the outer side of the armor layer is wrapped with a flame-retardant, halogen-free and oil-resistant polyolefin sheath layer.

The cross-sectional area of the conductor is 25-300mm ² , and the number of cores is 3+3 cores.

The insulating layer material is flame-retardant cross-linked polyolefin. the

The tape layer is formed by wrapping a layer of aluminum tape.

The cable core of the utility model is arranged alternately in 3+3, one large and one small, which reduces the superposition of the electromagnetic wave of the frequency conversion cable, and at the same time maintains the good roundness of the cable. Excellent shielding and anti-interference characteristics. The armor layer is armored with thick galvanized steel wire. The steel wire has large specifications and high hardness. Combustible cross-linked polyolefin material is insulating and has excellent flame retardant performance; the halogen gas released when the cable material is burned, the pH value of the gas aqueous solution and the electrical conductivity are low, and it has low corrosion performance; Abrasion resistance, tear resistance, oil resistance, ozone resistance, sludge resistance, high flame retardancy and other properties.

Description of drawings

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

Detailed ways

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

A frequency conversion cable for an offshore oil platform, comprising a conductor 1 and an insulating layer 2, the outer sides of the conductors 1 are respectively wrapped with insulating layers 2, the conductors 1 are mutually twisted into bundles after wrapping the insulating layers 2, and the outer sides of the insulating layers 2 are wrapped with tape Layer 3, between the tape layer 3 and the insulating layer 2, there is a flame-retardant glass fiber rope as the filling layer 4, and the outside of the tape layer 3 is wrapped with a shielding layer 5, an inner lining layer 6, an armor layer 7, and the armor layer 7 Use thick galvanized steel wires, apply asphalt 8 in the gap between galvanized steel wires, and wrap the outer side of the armor layer 7 with a high flame-retardant, low-smoke, halogen-free, oil-sludge-resistant polyolefin sheath layer 9,

The cross-sectional area of the conductor 1 is 25-300 mm ² , and the number of cores is 3+3 cores; the material of the insulating layer 2 is flame-retardant cross-linked polyolefin, the tape layer 3 is composed of a layer of tape overlapped and wrapped, and the inner lining layer 5. It is made of extruded polyolefin material with high flame retardant, low smoke, halogen-free and 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.

Claims (4)

1. offshore oil platform frequency-changing cable, comprise conductor, insulating barrier, it is characterized in that: the described conductor outside is enclosed with respectively insulating barrier, behind the wrap insulate layer core is pressed small one and large one spaced apart, then the stranded bunchy of 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, described belting layer outer wrapping screen, described screen adopts the proof copper-wire braided structure, count is not less than 90%, and the described screen outside is enclosed with inner covering, and 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 smears bitumen treatment, and the armour outside is enclosed with fire-retardant Halogen oil resistant mud polyolefin jacket layer.

2. a kind of offshore oil platform frequency-changing cable according to claim 1 is characterized in that it is 25～300mm that described cross-sectional area of conductor amasss ², the core number is the 3+3 core.

3. a kind of offshore oil platform frequency-changing cable according to claim 1, it is characterized in that: described insulating layer material is the flame-proof cross-linking polyolefin.

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

Images