CN201812508U

CN201812508U - Fire-fighting corrosion-resistant and weather-proof armored cable for offshore oil platform

Info

Publication number: CN201812508U
Application number: CN2010202922167U
Authority: CN
Inventors: 李青; 曾广彬
Original assignee: YANGZHOU CITY HONGQI CABLE MAKING CO Ltd
Current assignee: YANGZHOU CITY HONGQI CABLE MAKING CO Ltd
Priority date: 2010-08-09
Filing date: 2010-08-09
Publication date: 2011-04-27
Anticipated expiration: 2020-08-09

Abstract

A fire-fighting corrosion-resistant and weather-proof armored cable for an offshore oil platform belongs to the technical field of cables and comprises a cable core and an outer protective layer. The fire-fighting corrosion-resistant and weather-proof armored cable is characterized in that a flame-retardant layer, a waterproof layer, an inner sheath and an armored layer are successively disposed on the cable core, four insulation wires and a filling layer are stranded to form the cable core, the glass fiber tape flame-retardant layer with high inflaming retarding is lapped on the cable core, the double-layered waterproof layer with waterproof cloth tapes is lapped on the flame-retardant layer, the low-smoke zero-halogen flame-retardant crosslinking polyolefin inner sheath is extruded on the waterproof layer, the zinc-coated steel wire armored layer is braided on the inner sheath, and the low-smoke zero-halogen flame-retardant crosslinking polyolefin outer protective layer is extruded on the armored layer. The fire-fighting corrosion-resistant and weather-proof armored cable is reasonable and simple in structure, easy in production and manufacturing, stable in transmission property, excellent in heat resistance, acid and alkali resistance and radiation resistance, fine in insulating property and higher in mechanical strength, and is a special cable particularly used with a power circuit of power equipment of the offshore oil platform.

Description

Offshore oil platform fire control type corrosion resistant weather armoured cable

Technical field

The utility model relates to a kind of cable, and especially offshore oil platform belongs to the cable technology field with fire control type corrosion resistant weather armoured cable.

Background technology

There are salt fog and the high low temperature effect of greasy filth burn into and unfavorable factor such as inflammable on the platform of offshore oil exploitation, having a strong impact on the serviceability of cable, the existing common cable that is made of cable core and outer jacket can not be satisfied the demand, so be badly in need of a kind of supporting with it private cable of exploitation.

The utility model content

The purpose of this utility model is exactly for satisfying the needs in market, a kind of offshore oil platform fire control type corrosion resistant weather armoured cable being provided.

The purpose of this utility model is to realize like this, offshore oil platform fire control type corrosion resistant weather armoured cable, comprise cable core and outer jacket, it is characterized in that the flame-retardant layer that on cable core, sets gradually, water blocking layer, inner sheath and armour, the cable core of described cable core for being twisted into by four insulated wires and packed layer, wrapped high flame retardant glass fibre belt flame-retardant layer on cable core, the wrapped bilayer strap water blocking layer that blocks water on flame-retardant layer, on water blocking layer, extrude low-smoke non-halogen flame-retardant cross-linked polyolefin inner sheath, braiding zinc-coated wire armour extrudes low-smoke non-halogen flame-retardant cross-linked polyolefin outer jacket on the armour on inner sheath.

Described insulated wire is made of conductor and insulating barrier, described conductor is that many zinc-plated oxygen-free copper skein silk systems form, described insulating barrier is by inner insulating layer and external insulation layer, described inner insulating layer is that mica tape is wrapped on conductor, and described external insulation layer is that flame-retardant crosslinking polyethylene evenly is extruded on the inner insulating layer.

Described packed layer is filled in the slit of four insulated wires for the non-hygroscopic gasket for packing.

The strand system lay ratio of described cable core≤8 cable core diameters.

The wrapped Duplication of described high flame retardant glass fibre belt is 30%-50%.

The utility model is rational in infrastructure simple, manufactures easily, and serviceability is good.The transmission performance of cable is stable, has good heat-resistant, resistance to acids and bases, and radioresistance, good insulation preformance, mechanical strength is higher, and fire resistance is good, is specially adapted to the supporting private cable of offshore oil platform power-equipment power circuit.

Description of drawings

Fig. 1 is a structural representation of the present utility model;

Among the figure: 1-conductor, 2-inner insulating layer, 3-external insulation layer, 4-inserts, 5-flame-retardant layer, 6-water blocking layer, 7-inner sheath, 8-armour, 9-outer jacket.

Embodiment

Conductor 1 adopts many zinc-plated oxygen-free copper skein silk systems to form, single tinned copper wire allows welding, do not allow to twist joint, the 300m long conductor does not allow 3 and above welding point arbitrarily, adopt the stranded mode of bundle strand, bundle strand lay ratio≤20d (d is a conductor diameter) should≤9.24 Ω/km when conductor DC resistance is converted to 20 ℃.Adopt the wrapped inner insulating layer 2 of mica tape in conductor 1 periphery, the wrapped Duplication of mica tape has good heat-resistant, resistance to acids and bases, radioresistance, good insulation preformance greater than 75%.Extrude flame-retardant crosslinking polyethylene external insulation layer 3 and constitute insulated wire on inner insulating layer, the insulating barrier 3 thinnest part thickness that extrude are not less than the 90%-0.1mm of standard value.This insulated wire has very high temperature resistant grade, and mechanical strength is higher, and insulated wire can bear the 6kv power frequency sparking test and not puncture, and should be not less than 100M Ω/km when the insulated wire soaking insulation resistance is converted to 20 ℃.Different colours such as it is red, white, green, black that insulated wire is divided into.Cable core is by red, white, green, black four insulated wires and inserts 4 strandings, the cable core rounding, and the lay ratio≤8d of stranding (d is the cable core diameter of stranding), four insulated wires are arranged by red, white, black, green clockwise direction, inserts employing non-absorbent material.Wrapped high flame retardant glass fibre belt flame-retardant layer 5 on cable core, the wrapped Duplication of high flame retardant glass fibre belt is 30%-50%, stablizes each line group structure of cable core.The wrapped bilayer strap water blocking layer 6 that blocks water extrudes low-smoke non-halogen flame-retardant cross-linked polyolefin inner sheath 7 on water blocking layer on flame-retardant layer, and rate of fire travel when this material can slow down cable fire prolongs operating time of cable.Adopt zinc-plated thin copper wire braiding armour 8 on inner sheath, the coverage rate of braiding is greater than 85%.Extrude black low-smoke non-halogen flame-retardant cross-linked polyolefin outer jacket 9 on armour, oversheath thickness thinnest part should be not less than 90%-0.1, and smooth, rounding, color and luster are even.

Claims

1. offshore oil platform is with fire control type corrosion resistant weather armoured cable, comprise cable core and outer jacket, it is characterized in that on cable core, being provided with successively flame-retardant layer, water blocking layer, inner sheath and armour, described cable core is made of four insulated wires and inserts strand system, wrapped high flame retardant glass fibre belt flame-retardant layer on cable core, the wrapped bilayer strap water blocking layer that blocks water on flame-retardant layer, on water blocking layer, extrude low-smoke non-halogen flame-retardant cross-linked polyolefin inner sheath, braiding zinc-coated wire armour extrudes low-smoke non-halogen flame-retardant cross-linked polyolefin outer jacket on armour on inner sheath.

2. offshore oil platform according to claim 1 fire control type corrosion resistant weather armoured cable, it is characterized in that described insulated wire is made of conductor and insulating barrier, described conductor is that many zinc-plated oxygen-free copper skein silk systems form, described insulating barrier is made of inner insulating layer and external insulation layer, inner insulating layer is that mica tape is wrapped on conductor, and external insulation layer is that flame-retardant crosslinking polyethylene evenly is extruded on the inner insulating layer.

3. offshore oil platform according to claim 1 is characterized in that with fire control type corrosion resistant weather armoured cable described inserts is filled in the slit of four insulated wires for the non-hygroscopic gasket for packing.

4. offshore oil platform according to claim 1 is characterized in that the strand system lay ratio≤8 cable core diameters of described cable core with fire control type corrosion resistant weather armoured cable.

5. offshore oil platform according to claim 1 is characterized in that with fire control type corrosion resistant weather armoured cable the wrapped Duplication of described high flame retardant glass fibre belt is 30%-50%.