CN202042227U - A flame retardant marine control cable - Google Patents

Abstract

The utility model discloses a control cable for a flame-retardant ship. The control cable comprises a plurality of conductors and insulating layers, wherein the outer sides of the conductors are coated with insulating layers and branch shielding layers in sequence respectively; the conductors coated with the insulating layers and the branch shielding layers are twisted into bundles; the outer sides of the branch shielding layers are coated with taped coverings after being bundles; a plurality of longitudinal filling ropes are arranged between the taped coverings and the branch shielding layers; the outer sides of the taped coverings are provided with total shielding layers, jacket layers and armor layers in sequence; the conductors are tin-plated copper wires with the resistivity of less than 0.017241 ohm.mm<2>/m (20 DEG C); the branch shielding layers and the total shielding layers are woven by copper wires; and the jacket layers are made from flame-retardant polyolefin. In the utility model, columnar filling ropes are arranged, so that the tensile strength is enhanced; and meanwhile, due to the adoption of two layers of the shielding layers, the shielding efficiency is improved effectively.

Description

A flame retardant marine control cable

Technical field:

The utility model relates to the field of marine control cables, in particular to a flame-retardant marine control cable.

Background technique:

Cables are used to transmit electric (magnetic) energy, information and wire products that realize electromagnetic energy conversion.

Marine cables include marine power cables, marine control cables, marine communication cables, and naval control cables. It is mainly applicable to the transmission and electrical control of various river and sea ships and offshore oil platforms and other water structures.

Most of the traditional marine control cables have an armored layer according to the needs. The armored layer of the cable not only enhances the strength of the cable, prevents mechanical damage and mouse bites, but also because most of the armored materials are made of steel with high magnetic permeability. It is composed of wrapping, steel wire or copper wire braiding, which is very beneficial to resist low-frequency interference. Through the correct grounding of the armor layer, the lightning protection performance of the cable can also be improved. The advantage of armored cables for construction is that no special cables are needed. The ditch can be directly buried, and there is no need to build another cable well at the corner. Sometimes just having an armor layer is not enough to meet the strength requirements of the cable.

The utility model increases the columnar filling rope to enhance the tensile strength; at the same time, the utility model adopts two layers of shielding layers to effectively improve the shielding efficiency. In addition, the insulation layer material is made of cross-linked polyolefin, which has excellent insulation performance. The sheath layer material is made of flame-retardant polyvinyl chloride, which has excellent flame-retardant performance. Corrosive performance, less smoke is generated when the cable burns.

Utility model content:

The purpose of the utility model is to provide a flame-retardant marine control cable, which mainly solves the defect that the strength and shielding performance of the traditional cable are not enough to meet the actual needs.

The technical scheme of the utility model is as follows:

The flame-retardant marine control cable includes several conductors and insulating layers. The outer sides of the several conductors are respectively wrapped with insulating layers and sub-shielding layers in turn. Synthetic bundles, after bundled, the outer side of the sub-shielding layer is wrapped with a wrapping layer, and several vertical filling ropes are arranged between the wrapping layer and the sub-shielding layer, and the wrapping layer The outside of the layer is sequentially wrapped with a total shielding layer, a sheath layer, and an armor layer.

. mm²/m(20℃)。 The flame-retardant marine control cable is characterized in that: the several conductors are tinned copper wires, and the resistivity of the tinned copper wires is less than 0.017241

. mm ² /m (20°C).

The flame-retardant marine control cable is characterized in that: the sub-shielding layer and the overall shielding layer are both made of braided copper wires, and the material of the sheath layer is made of flame-retardant polyolefin.

The utility model has the advantages of:

The utility model increases the columnar filling rope to enhance the tensile strength; at the same time, it adopts two layers of shielding layer to effectively improve the shielding efficiency; in addition, the material of the sheath layer is made of flame-retardant polyvinyl chloride, which has excellent flame-retardant performance and is easy to burn. When the halogen gas escapes, the pH value and conductivity of the gas aqueous solution are low, with low corrosion performance, and the cable generates less smoke when burning.

Description of drawings:

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

Detailed ways:

. mm²/m(20℃)，分屏蔽层3、总屏蔽层6均采用铜丝编织构成，护套层7材料采用阻燃聚烯烃。 Flame-retardant marine control cable, including several conductors 1 and insulating layer 2, the outer sides of several conductors 1 are respectively wrapped with insulating layer 2 and sub-shielding layer 3, and several conductors 1 after wrapping insulating layer 2 and sub-shielding layer 3 Twisted into bundles, after bundled, the outer side of the sub-shielding layer 3 is wrapped with a wrapping layer 4, and several vertical filling ropes 5 are arranged between the wrapping layer 4 and the sub-shielding layer 3, and the outer side of the wrapping layer 4 It is wrapped with a total shielding layer 6, a sheath layer 7, and an armor layer 8 in turn. Several conductors 1 are made of tinned copper wires, and the resistivity of the tinned copper wires is less than 0.017241

mm ² /m (20°C), the sub-shielding layer 3 and the overall shielding layer 6 are made of braided copper wire, and the material of the sheath layer 7 is flame-retardant polyolefin.

Claims (3)

1. fire-retardant control cable peculiar to vessel, comprise several conductors, insulating barrier, the outside of described several conductors is enclosed with insulating barrier, sub-shield respectively successively, it is characterized in that: the stranded bunchy of several conductors after wrap insulate layer, the sub-shield, behind the bunchy, the outside of described sub-shield is enclosed with lapping layer, is provided with several vertical gasket for packings of putting between described lapping layer and the described sub-shield, and the described lapping layer outside is enclosed with total screen, restrictive coating, armour successively.

2. fire-retardant control cable peculiar to vessel according to claim 1 is characterized in that: described several conductors all adopt tinned copper wire, and the resistivity of described tinned copper wire is less than 0.017241 . mm ²/ m (20 ℃).

3. fire-retardant control cable peculiar to vessel according to claim 1 is characterized in that: described sub-shield, total screen all adopt the copper wire braiding to constitute, and described restrictive coating material adopts fire retardant polyolefin.

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