CN202650703U - A light thin-wall insulated communication cable for ships - Google Patents

Abstract

The utility model discloses a light-weight thin-wall insulated communication cable for ships. A tinned copper conductor is arranged in the center of the cable insulated wire core, and a polyperfluoroethylene propylene first insulating layer, a hairpin The second insulation layer of foamed polyethylene constitutes an insulated wire core, two insulated wire cores are twisted into a pair core, and a plurality of the pair cores are twisted into a cable core, and a tape layer is wrapped around the cable core. A braided shielding layer and a sheath layer are arranged outside the wrapping layer. It is light in weight, small in outer diameter, oil-resistant, corrosion-resistant, low-temperature resistant, moisture-proof, and halogen-free, which can meet the requirements of new-type ship signal transmission.

Description

A light thin-wall insulated communication cable for ships

Technical field:

The utility model relates to a light thin-wall insulated communication cable for ships.

Background technique:

With the rapid development of my country's shipbuilding industry, the market demand for ships' cables continues to expand, especially for ship's communication cables. However, in order to meet the performance requirements of communication cables, it is difficult to reduce the outer diameter of communication cables for ships made of cross-linked polyethylene materials, and the overall outer diameter is difficult to compress. It is difficult to meet market requirements for cables with light weight and small outer diameter.

Invention content:

In order to overcome the defects of the prior art, the purpose of this utility model is to provide a light-weight thin-wall insulated communication cable for ships, which is light in weight, small in outer diameter, oil-resistant, corrosion-resistant, low-temperature resistant, moisture-proof, and halogen-free, and can meet Requirements for signal transmission of new ships.

The utility model solves the technical problem and adopts the following technical solutions:

A light-weight thin-wall insulated communication cable for ships, the center of the cable insulated core is provided with a tinned copper conductor, and the outer layer of the conductor is sequentially provided with a first insulating layer of polyfluoroethylene propylene and a second insulating layer of foamed polyethylene. The insulating layer constitutes an insulated wire core, two insulated wire cores are twisted into a paired core, and a plurality of the paired cores are twisted into a cable core, and a tape layer is wrapped around the cable core, and a tape layer is wrapped outside the tape layer. It has a braided shield and jacket.

The insulating layer is composed of polyperfluoroethylene propylene and foamed polyethylene.

The sheath layer is a low-smoke, halogen-free, low-toxic, flame-retardant cross-linked polyolefin sheath.

Compared with the prior art, the beneficial effects of the utility model are reflected in:

1. Small outer diameter, light weight, and low cost: the cable insulation is a combination of polyfluoroethylene propylene and foamed polyethylene. The risk of ethylene being broken down, the presence of foamed polyethylene in the second insulating layer effectively reduces the dielectric constant of the cable insulation, so that the outer diameter of the cable insulation can be greatly reduced while meeting the requirements of the electrical properties of the cable. Taking a communication cable with a nominal cross-sectional area of ^0.5mm as an example, the overall outer diameter of the cable with combined insulation is 0.6mm lower than that of the traditional XLPE insulated cable. Because the outer diameter of the cable is reduced after twisting, the amount of copper used for braiding tinned copper wire At the same time, the amount of sheath is reduced correspondingly, so that the overall weight of the cable is reduced by about 8kg/km, and the cost is reduced by about 4%.

2. The process is highly achievable: because FEP is extruded by drawing tube, the process is mature, which effectively avoids the breakdown problem of single-layer foamed polyethylene, and at the same time, foamed polyethylene is insulated in FEP The outer layer is extruded, the outer diameter is stable, and the foaming is uniform, effectively ensuring the electrical performance of the cable.

3. High safety and reliability: Since the flame retardancy of FEP is better than that of cross-linked polyethylene, it will not burn in case of fire, and it can ensure the signal transmission and safety performance of the equipment under relatively static conditions. Greatly improve.

Description of drawings:

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

Labels in the figure: 1 conductor, 2 first insulating layer, 3 second insulating layer, 4 tape layer, 5 shielding layer, 6 sheath layer.

The utility model will be further described below through specific embodiments in conjunction with the accompanying drawings.

Detailed ways:

Embodiment: In combination with Fig. 1, the light-duty thin-wall insulated communication cable for ships of this embodiment has a tinned copper conductor 1 arranged in the center of the cable insulated core, and polyperfluoroethylene propylene is arranged sequentially on the outer layer of the conductor 1 The first insulation layer 2 and the second insulation layer 3 of foamed polyethylene constitute an insulated wire core, two of the insulated wire cores are twisted into a paired core, and a plurality of the paired cores are twisted into a cable core, which is wound outside the cable core Wrapped with a tape layer 4, a braided shielding layer 5 and a sheath layer 6 are arranged outside the tape layer 4, and the sheath layer 6 is a low-smoke, halogen-free, low-toxicity, flame-retardant cross-linked polyolefin sheath.

The cable of this embodiment is obtained through the following process: a wire beam machine twists multiple strands of tinned copper strands as the conductor 1, and extrudes the first insulating layer 2 of polyperfluoroethylene propylene with a high-temperature extruder outside the conductor 1. The first insulation layer is extruded and wrapped with foamed polyethylene, the second insulation layer 3, after twisting two insulated wire cores, arrange multiple pairs of insulated wire cores in sequence on the cable forming machine for cable assembly and wrapping tape layer 4 , use a braiding machine to braid the tinned copper wire shielding layer 5, and finally extrude a low-smoke, halogen-free, low-toxicity, flame-retardant cross-linked polyolefin sheath layer 6 with an extrusion device.

Claims (3)

1. A light-duty thin-wall insulated communication cable for ships, the center of the cable insulated wire core is provided with a tinned copper conductor (1), it is characterized in that, the outer layer of the conductor (1) is successively provided with polyperfluoroethylene The first insulating layer of propylene (2) and the second insulating layer of foamed polyethylene (3) constitute an insulated wire core, two of the insulated wire cores are twisted into a paired core, and a plurality of the paired cores are twisted into a cable core. A tape layer (4) is wrapped around the cable core, and a braided shielding layer (5) and a sheath layer (6) are arranged outside the tape layer (4). 2. A light-weight thin-wall insulated communication cable for ships according to claim 1, characterized in that the insulating layer (2) is composed of polyperfluoroethylene propylene and foamed polyethylene. 3. A light-weight thin-wall insulated communication cable for ships according to claim 1, characterized in that the sheath layer (6) is a low-smoke, halogen-free, low-toxicity, flame-retardant cross-linked polyolefin sheath.

Images