CN201904575U - Anti-corrosion and wear-resistant stranded protective tube for optical cables - Google Patents

Abstract

The utility model discloses a corrosion-resistant and wear-resistant twisted protective tube for optical cables, which is characterized by being a bendable and mutually embedded integral protective tube made of Z-shaped or S-shaped wires in cross section, and is used for laying optical cables and protecting complex and easily abraded areas on the seabed. The utility model has the advantages of convenient construction, significantly reducing the cost of optical cables, reducing optical cable joints, and improving the reliability of optical cable operation.

Description

Anti-corrosion and wear-resistant stranded protective tube for optical cables

technical field

The utility model relates to protection measures for optical cables, electric cables and photoelectric composite cables, that is, an anti-corrosion and wear-resistant stranded protection tube for optical cables.

Background technique

The optical cables or cables of the prior art can be used under normal working conditions, but in special areas and areas, problems are prone to occur. For example, optical cables and cables working on the seabed often encounter rough and hard seabeds with high In complex areas such as large trenches, the outer sheath is quickly worn out under the surge of seawater, causing the entire line to fail or even break the cable; when laying non-excavated horizontal drilling, the outer sheath of the optical cable and the cable cannot withstand The strong resistance of pulling back and pulling in the borehole and the laying of oil and gas pipelines in the same ditch or in the same pipeline involve excessive mechanical performance gaps, causing severe wear of the outer sheath. In order to increase the wear resistance of the cable, one way is to thicken the armored steel wire, but the result is that the diameter and weight of the cable are increased, the transmission performance of the cable is deteriorated, and the cost is greatly increased; The thickened outer sheath is made, the extrusion process is carried out continuously, and the whole process is thickened, which increases the cost needlessly. Only the thickened outer sheath is extruded for complex areas, and two optical cable connectors are added for each section. , reducing the reliability of the whole line, the above two methods are not desirable.

Contents of the invention

In order to overcome the lack of corrosion resistance and wear resistance of existing optical cables in complex working sections, the utility model provides an anti-corrosion and wear-resistant stranded protection tube for optical cables, which can conveniently work on optical cables in complex local sections. Enhancing its corrosion resistance and wear resistance can significantly reduce the cost of the cable, reduce joints, and improve the reliability of the optical cable.

The technical scheme adopted by the utility model to solve the technical problem is: a kind of anti-corrosion and wear-resistant stranded protective tube for optical cables, which has a cross-sectional shape of Z-shaped wire, S-shaped wire, internal reinforcement and external reinforcement. It is characterized in that the cross-sectional shape is a Z-shaped wire or an S-shaped wire twisted into an integral protective tube; the cross-sectional shape of the above-mentioned Z-shaped wire or S-shaped wire is that the inner and outer peripheral lines are concentric arc lines , Adjacent side lines are Z-shaped or S-shaped, and the special-shaped tenon meshes with complementary internal and external shapes. Each layer of protective tube is twisted by the same shape of the molded wires. After twisting, the adjacent sides of the molded wires are embedded with each other to form a firm and reliable , The overall tubular structure with smooth inner and outer walls, and its cross-sectional shape is a complete circular ring. The above molded wire is drawn, drawn, extruded and rolled by metal or non-metal. When the molded wire is a non-metallic wire, an axial inner reinforcement can be arranged inside the wire, and an external reinforcement can be arranged outside the wire; the above-mentioned The number of layers of the molded wire and the molded wire with internal reinforcement and the stranded layer of the external reinforcement is single layer, two layers or multiple layers.

The positive effect of the utility model is that according to the actual needs of the site, twisting can be added to the outside of the outer sheath of the optical cable, cable or optical cable in the local complex section, so as to improve the tensile strength, corrosion resistance and wear resistance of the optical cable, and significantly reduce the optical fiber. Reduce cable costs, reduce optical cable joints, and improve the reliability of optical cable operation.

Description of drawings

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

Figures 1 to 6 are cross-sectional views of the structure of a small part of the optical cable protection tube of the present invention.

Figure 1 is a cross-sectional view of an anti-corrosion and wear-resistant protective tube for optical cables twisted with single-layer Z-shaped wires.

Fig. 2 is a cross-sectional view of an anti-corrosion and wear-resistant protective tube for optical cables stranded with non-metallic Z-shaped wires with internal reinforcements 3.

Fig. 3 is a cross-sectional view of an anti-corrosion and wear-resistant protective tube for an optical cable with a Z-shaped inner layer and an S-shaped double-layer wire twisted outer layer.

Fig. 4 is a cross-sectional view of an anti-corrosion and wear-resistant protective tube for an optical cable in which the inner layer is a Z-shaped non-metallic wire with an inner reinforcing member 3 and the outer layer is an S-shaped wire stranded.

Fig. 5 is a cross-sectional view of an anti-corrosion and wear-resistant protective tube for an optical cable with inner reinforcements 3 on both inner and outer layers, Z-shaped inner layer and S-shaped wire twisted outer layer.

Fig. 6 is a cross-sectional view of an anti-corrosion and wear-resistant protective tube for an optical cable with a Z-shaped wire on the inner layer and an S-shaped wire on the outer layer, and a layer of metal wire outer reinforcement 4 twisted between the inner and outer layers.

In Fig. 1 to Fig. 6: 1. profiled line with Z-shaped cross-sectional shape, 2. profiled line with S-shaped cross-sectional shape, 3. internal reinforcement, 4. external reinforcement.

Detailed ways

In Figures 1 to 6, a corrosion-resistant and wear-resistant stranded protective tube for optical cables consists of a Z-shaped cross-sectional profile 1, an S-shaped cross-sectional profile 2, an internal reinforcement 3 and The outer reinforcing member 4 is composed of a molded wire 1 with a Z-shaped cross-section or a molded wire 2 with an S-shaped cross-section to form an integral protective tube; the cross-sectional shape of the molded wires 1 and 2 is the inner and outer The peripheral line is a concentric arc line, and the adjacent side line is a Z-shaped or S-shaped special-shaped tenon mesh connection with complementary internal and external shapes. The sides are embedded with each other to form a firm and reliable overall tubular structure with smooth inner and outer walls. When the wire is a non-metallic wire, the axial inner reinforcement 3 is arranged inside the wire; the outer reinforcement 4 is arranged outside the above-mentioned molded wire; the layers of the above-mentioned molded wire 1, 2 and the outer reinforcement 4 are single layer, two layers or multiple layers.

Claims (5)

1. an optical cable is with the stranded protection tube of corrosion-resisting wear-proof; by shape of cross section is that Z-shaped molded lines (1), shape of cross section are that S shape molded lines (2), interior reinforcement (3) and outer reinforcement (4) are formed, and it is characterized in that by shape of cross section being that Z-shaped molded lines (1) or S shape molded lines (2) strand are made the Global Macros pipe.

2. the optical cable according to claim 1 stranded protection tube of corrosion-resisting wear-proof; the shape of cross section that it is characterized in that Z-shaped molded lines (1) or S shape molded lines (2) is that inside and outside perimeter line is that concentric arcs line, sides adjacent sideline are Z-shaped or the special-shaped tenon engagement of the inside and outside shape complementarity of S shape; every layer of protection tube is stranded by the molded lines of same shape; the mutual embedding connection of the adjacent edge of stranded back molded lines; form firm firm, whole tubular-shaped structures that inside and outside wall is smooth, its shape of cross section is complete annular.

3. optical cable according to claim 1 is characterized in that molded lines by metal or nonmetal making with the stranded protection tube of corrosion-resisting wear-proof, when molded lines is non-metal wire, and reinforcement (3) in its heart can be provided with axially.

4. the optical cable according to claim 1 stranded protection tube of corrosion-resisting wear-proof, reinforcement (4) outside it is characterized in that outside molded lines (1,2), being provided with.

5. the optical cable according to claim 1 stranded protection tube of corrosion-resisting wear-proof, it is characterized in that molded lines (1,2) and the molded lines of interior reinforcement (3) and the number of plies of outer reinforcement (4) strand layer are arranged is individual layer, two-layer or multilayer.

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