Shipboard emergency cable

 

(57) Abstract:

Usage: in a cable communication lines for the organization of emergency communication for the courts. The inventive conductive core of the cable is made with a core of three steel wires twisted with a pitch of 5.0-5.5, the isolation of a sealed Teflon, protective coverings contain a pillow under armor in the form of a braid of heat-resistant fibrous material; wire armour made of medium-carbon low-alloy manganese steel. The cable has a high mechanical strength and heat resistance, which ensures its reliability. 1 Il.

The invention relates to a cable communication lines, in particular for disaster decks lines, and can be used for the installation of emergency communication equipment on ships.

Accidents on ships, usually associated with fires and flooding several compartments. This leads to the failure of both telephone and hands-free command system shipboard communications /VCS/ due to burnout cable network.

Currently, the entire installation of shipboard emergency communications on vessels is maintained by the cable CRATE consisting of acrania the new cable with rubber jacket, secure the braid and shielding cannot be used on ships as an emergency. The reasons for excluding the possibility of application of the known cables for emergency videoconferencing is as follows:

isolation of known cables allows operation on their DPS with temperature not exceeding 60oC, at higher temperatures is to reduce the specific volume resistance insulation, resulting in the resistance of the cable insulation is greatly reduced; it is not possible to use this cable for installation on ships for emergency communication;

cable during operation on ships subject to repeated alternating longitudinal loads, resulting in local deformation of the conductive wires with subsequent fractures and fracture them in these places;

the rubber cover is used as protection against moisture and pillows under the braided shield in the known cables, operating at a temperature not exceeding 100oC.

The aim of the invention is to increase its mechanical strength, heat resistance and reliability.

The aim is achieved in that in a cable consisting of a live lived, insulation, screen braiding, amolecular, twisted with a pitch ratio of 5.0-5.5, fluoropolymer insulation sealed by zepecki after applying it on mine, with a pillow under armour imposed in the form of a braid of heat-resistant fibrous material, and wire armor made of medium-carbon low-alloy manganese steel.

The applicant and the unknown authors of the technical solution containing characteristics equivalent to the distinguishing features of the claimed device. The applicant and the unknown authors of similar solutions from other fields of technology, with technical properties of the claimed subject matter of the invention. Thus, the claimed technical solution meets the criteria of significant differences.

The figure schematically shown for illustration of the proposed marine emergency cable.

The following notation: 1 current-carrying strands of twisted trehprofilnoe steel core, around which imposed navel of measuring wires; 2 insulation tape PTFE, superimposed over the conductive wires; 3 common to all sealing lived Neftegazodobycha shell; 4 made from a heat resistant material /type polyester, asbestos, etc./; 5 armour of galvanized steel Provodnik wires with a diameter of 0.20-0.30 mm, twisted with a small step, the brevity of which is of 5.0-5.5. It provides flexibility veins, eliminating the possibility of local deformations and fractures copper wires of Aviva imposed on the core. The insulation of the wires of the cable 2, is made of tape polytetramethylene, sealed by zepecki PTFE imposed on the conductor 1, which creates a monolithic insulating shell and prevents the penetration of water under pressure /in case of emergency and flooded compartments on ships between tapes PTFE/. As pillows under armour applied braid 4 of polymeric fibrous heat resistant material /polyester, asbestos, and etc./, resistant to high temperature. Emergency cable will experience large load on the gap, so to armor 5 is applied wire of high strength low alloy medium carbon manganese steel.

Compared with the prototype of the proposed marine emergency cable has the following advantages:

has a high mechanical strength, since the conductors are not torn and not abraded during repeated flexing and mechanical stresses that occur on ships;

resistance to high the insulation resistance, consequently, the resistance of the cable insulation is not falling;

the cable is operable at a high temperature, and this is especially important in an emergency.

From the use of the invention should be expected to increase the mechanical strength, heat resistance 5-6 times and reliability of the cable under emergency conditions compared to existing shipboard cables.

Shipboard emergency cable containing insulated current-carrying core and the protective sheath, characterized in that, to improve operational reliability by increasing the mechanical strength and heat resistance while increasing shirokopolostnoe, each conductive lived made with a core of three steel wires twisted with a pitch ratio of 5.0-5.5, sealed insulation is made of baked Teflon pillow under armour imposed from heat resistant fibrous materials, wire armor made of medium-carbon low-alloy manganese steel.

 

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