CN210835372U

CN210835372U - High-strength side-pressure-resistant stainless steel armored optical cable

Info

Publication number: CN210835372U
Application number: CN201922035736.3U
Authority: CN
Inventors: 王爱国
Original assignee: Shenzhen Sdgi Photoelectricity Technologies Co ltd
Current assignee: Shenzhen Sdgi Photoelectricity Technologies Co ltd
Priority date: 2019-11-22
Filing date: 2019-11-22
Publication date: 2020-06-23
Anticipated expiration: 2029-11-22

Abstract

The utility model provides an anti side pressure stainless steel armor optical cable of high strength, including cable core, stainless steel microtubule, stainless steel armor and oversheath, the stainless steel armor mainly encircles by stainless steel strip the circumference winding of stainless steel microtubule forms, the stainless steel strip is equipped with first arc protruding tongue along the axial one end of stainless steel microtubule, and the other end is equipped with second arc protruding tongue, first arc protruding tongue with the protruding tongue's of second arc warpage opposite direction, stainless steel strip encircles the circumference winding of stainless steel microtubule, and, through first arc protruding tongue, the protruding tongue ring of second arc are inlayed and are detained. The utility model has the advantages that: the cable has the advantages of simple structure, convenience in manufacture, small sectional area, light weight, good side pressure resistance and tensile strength, corrosion resistance, high temperature resistance, rat and ant resistance, and can keep good mechanical performance of the cable in a harsh use environment and prolong the service life.

Description

High-strength side-pressure-resistant stainless steel armored optical cable

Technical Field

The utility model relates to an optical cable especially relates to an anti side pressure stainless steel armor optical cable of high strength.

Background

The existing commonly used structural optical cables mainly have three types: the optical cable comprises a layer stranded structure optical cable, a beam tube structure optical cable and a framework structure optical cable.

1. Layer stranded structure optical cable: the layer-stranded structure optical cable is formed by stranding 4 or more secondary coated optical fiber loose tubes (or partial filling ropes) around a central metal reinforcement into a round cable core, longitudinally wrapping a composite aluminum tape outside the cable core, extruding a polyethylene inner sheath, longitudinally wrapping a water-blocking tape and a double-sided coated corrugated steel (aluminum) tape, and finally wrapping a polyethylene outer sheath. If the number of cores is large or the tensile resistance is high, a steel wire armor layer is measured in the outer protective layer.

2. Bundle tube structure optical cable: the optical cable with the bundle tube structure is characterized in that optical fibers are sleeved in a spiral space loose sleeve made of high-modulus plastics, optical fiber ointment is filled in the sleeve to serve as a waterproof compound, a layer of non-woven fabric wrapped waterproof material and a steel wire armor layer (or two parallel steel wires are arranged on two sides) are applied to the outer portion of the sleeve, and a polyethylene sheath is extruded to form the cable.

3. Skeleton structure optical cable: the skeleton-type structural optical cable is formed by placing tightly sleeved optical fibers or primary coated optical fibers into spiral plastic skeleton grooves around a reinforced core. The skeleton-type optical cable has three types, namely a central additional spiral type, a positive and negative spiral type and a dispersion enhancement basic unit type.

The optical cable has the following defects:

1. the optical cable with layer-stranded structure contains a large number of optical fibers, the surplus length of the optical fibers in the optical cable is easy to control, the mechanical and environmental performance of the optical cable is good, and the optical cable is suitable for direct burial and pipeline laying and also can be used for overhead laying. But the structure is complex, the production is complex, the material consumption is high, and the tensile and lateral pressure resistance is insufficient. The layer-stranded structure optical cable has multiple layers of protective materials and contents, the characteristics of large volume and large weight are determined by the structural characteristics of the layer-stranded structure optical cable, the tensile and lateral tension resistance of the layer-stranded structure optical cable without steel wire armoring is seriously insufficient, and the layer-stranded structure optical cable with steel wire armoring has larger weight and volume although a certain tensile and lateral pressure resistance can be provided, so that the tensile and lateral pressure resistance of the layer-stranded structure optical cable during aerial laying is relatively weakened. The factors determine that the layer-stranded structural optical cable is extremely difficult to install in harsh special communication occasions and provides good tensile and lateral pressure resistance capability to ensure the mechanical stability of the optical cable in the special communication occasions.

2. The optical fiber of the bundle tube type structure optical cable has high assembly density, better tensile resistance and high splicing efficiency, and is suitable for relay networks and access networks. The mode of increasing the tensile and side pressure resistance of the optical cable with the beam tube structure is to place two parallel steel wires on two sides or wind a common steel wire armor layer. When a structural mode that two parallel steel wires are placed on two sides is adopted, the optical cable has good tensile resistance, but the lateral pressure resistance is obviously insufficient; when the mode of winding a layer of common steel wire armor layer is adopted, the weight and the volume of the optical cable are relatively large, so that the tensile and side pressure resistance of the optical cable is relatively weakened when the optical cable is laid overhead, and the optical cable is not beneficial to installation work in harsh special occasions. In addition, in corrosive environment and occasions with fire-fighting hidden dangers at high temperature, the optical cable sheath and the steel wire are easy to corrode and age, and the corrosion resistance and the high-temperature resistance of the optical cable sheath and the steel wire are still slightly insufficient.

3. The skeleton-type structural optical cable has good lateral pressure resistance and good protection for the optical fiber. The optical fiber has high assembly density, small relative diameter of the optical cable, light weight and convenient laying. But the manufacturing is extremely complex, the production technology is difficult, and the corrosion resistance, the high temperature resistance and the rat and ant resistance are slightly insufficient. If be applied to special communication occasion, not only the input is huge and be difficult to guarantee the stability of communication.

Disclosure of Invention

In order to solve the problems in the prior art, the utility model provides an anti side pressure stainless steel armor optical cable of high strength.

The utility model provides an anti side pressure stainless steel armor optical cable of high strength, including cable core, stainless steel microtubule, stainless steel armor and oversheath, the oversheath parcel is in outside the stainless steel armor, stainless steel armor parcel is in outside the stainless steel microtubule, the stainless steel microtubule parcel is in outside the cable core, the stainless steel armor mainly encircles by the stainless steel strip the circumference winding of stainless steel microtubule forms, the stainless steel strip is equipped with first arc protruding tongue along the axial one end of stainless steel microtubule, and the other end is equipped with second arc protruding tongue, first arc protruding tongue with the warping opposite direction of second arc protruding tongue, the stainless steel strip encircles the circumference winding of stainless steel microtubule to, through first arc protruding tongue, second arc protruding tongue ring buckle.

As a further improvement of the utility model, the cross section of the stainless steel strip is S-shaped.

As a further improvement of the utility model, the cable core includes coated optical fiber and optical fiber ointment, coated optical fiber sets up inside the stainless steel microtube, the optical fiber ointment is filled in the stainless steel microtube.

As a further improvement of the utility model, the oversheath is the TPU oversheath or PVC oversheath or PE oversheath of extrusion moulding.

The utility model has the advantages that: the cable has the advantages of simple structure, convenience in manufacture, small sectional area, light weight, good side pressure resistance and tensile strength, corrosion resistance, high temperature resistance, rat and ant resistance, and can keep good mechanical performance of the cable in a harsh use environment and prolong the service life.

Drawings

Fig. 1 is a sectional view of the axial direction of a high-strength side pressure resistant stainless steel armored optical cable of the present invention.

Figure 2 is the utility model discloses a radial direction's of anti side pressure stainless steel armored optical cable of high strength section view.

Figure 3 is the utility model relates to an anti side pressure stainless steel armored optical cable's of high strength stainless steel strip's schematic diagram.

Detailed Description

The present invention will be further described with reference to the following description and embodiments.

As shown in fig. 1 to 3, a high-strength lateral pressure resistant stainless steel armored optical cable comprises a cable core, a stainless steel microtube 3, a stainless steel armor layer 4 and an outer sheath 5, the outer sheath 5 is wrapped outside the stainless steel armor layer 4, the stainless steel armor layer 4 is wrapped outside the stainless steel microtube 3, the stainless steel microtube 3 is wrapped outside the cable core, the stainless steel armor layer 4 is mainly formed by winding a stainless steel strip 40 around the circumference of the stainless steel microtube 3, one end of the stainless steel strip 40 along the axial direction of the stainless steel microtube 3 is provided with a first arc-shaped tongue 41, the other end is provided with a second arc-shaped tongue 42, the first arc-shaped tongue 41 and the second arc-shaped tongue 42 are warped in opposite directions, the stainless steel strip 40 is wound around the circumference of the stainless steel microtube 3, and the first arc-shaped tongue 41 and the second arc-shaped tongue 42 are inserted and buckled in a ring manner.

As shown in fig. 1 to 3, the stainless steel strip 40 has an S-shaped cross-section.

As shown in fig. 1 to 3, the cable core comprises a coated optical fiber 1 and an optical fiber ointment 2, the coated optical fiber 1 is arranged in the stainless steel microtube 3, and the optical fiber ointment 2 is filled in the stainless steel microtube 3.

As shown in fig. 1 to 3, the outer sheath 5 is an extruded TPU outer sheath or a PVC outer sheath or a PE outer sheath.

The high-strength side-pressure-resistant stainless steel armored optical cable provided by the utility model has the advantages that the used stainless steel micro-tube 3 has good high temperature resistance, corrosion resistance, water resistance, ant and rat resistance, and has certain side pressure resistance and tensile strength, the outer layer is wound with the stainless steel strip 40 with S-shaped structure, the stainless steel strip 40 with S-shaped structure is embedded and buckled with the special structure formed by winding the stainless steel micro-tube 3, a layer of hard pressure-bearing and tensile armor layer is formed on the surface of the stainless steel micro-tube 3, when the armor layer bears the lateral pressure, part of the pressure is transmitted to the stainless steel micro-tube 3, and most of the pressure is converted into axial force through the embedded and buckled connecting structure, namely, the mutual extrusion force at the embedded and buckled connection part of the stainless steel strip 40 with the S-shaped structure, and the embedded and buckled structure of the stainless steel strip well limits the axial displacement of the optical cable armor layer, thereby providing excellent tensile and lateral pressure resistance. The structure can convert the stress given by the external environment into self-bearing force to the maximum extent, thereby providing good mechanical performance. And the coated optical fiber 1 and the stainless steel microtube 3 are in loose sleeve relation, and when the coated optical fiber is subjected to external pressure or pulling force, the optical fiber is not stressed due to micro deformation of the optical cable.

The utility model provides a pair of anti side pressure stainless steel armor optical cable of high strength has following advantage:

1. the cable has the advantages of light weight, small volume, good corrosion resistance, high temperature resistance, rat resistance and ant resistance, is convenient to lay, and can meet the communication requirement under severe conditions.

2. The stainless steel armor layer 4 is formed by winding the stainless steel bars 40 with the S-shaped structures, and the stainless steel armor layer 4 is mutually nested and extruded to form a hard armor outer layer, so that good lateral pressure resistance and tensile strength are provided, the stainless steel microtube 3 and the coated optical fiber 1 in the stainless steel microtube are free from external force, and the optical cable has good mechanical performance and is not fatigue-damaged.

3. Simple structure, simple production process and low production cost.

The foregoing is a more detailed description of the present invention, taken in conjunction with the specific preferred embodiments thereof, and it is not intended that the invention be limited to the specific embodiments shown and described. To the utility model belongs to the technical field of ordinary technical personnel, do not deviate from the utility model discloses under the prerequisite of design, can also make a plurality of simple deductions or replacement, all should regard as belonging to the utility model discloses a protection scope.

Claims

1. The utility model provides an anti side pressure stainless steel armoured optical cable of high strength which characterized in that: the cable comprises a cable core, a stainless steel micro-tube, a stainless steel armor layer and an outer sheath, wherein the outer sheath is wrapped outside the stainless steel armor layer, the stainless steel armor layer is wrapped outside the stainless steel micro-tube, the stainless steel micro-tube is wrapped outside the cable core, the stainless steel armor layer is formed by winding a stainless steel strip around the stainless steel micro-tube in the circumferential direction, a first arc-shaped convex tongue is arranged at one end of the stainless steel strip along the axial direction of the stainless steel micro-tube, a second arc-shaped convex tongue is arranged at the other end of the stainless steel strip, the warping directions of the first arc-shaped convex tongue and the second arc-shaped convex tongue are opposite, the stainless steel strip is wound around the stainless steel micro-tube in the circumferential direction, and the first arc-shaped convex tongue and the second arc-.

2. The high strength lateral pressure resistant stainless steel armored cable of claim 1, wherein: the cross section of the stainless steel strip is S-shaped.

3. The high strength lateral pressure resistant stainless steel armored cable of claim 1, wherein: the cable core comprises coated optical fibers and optical fiber ointment, the coated optical fibers are arranged in the stainless steel micro-tube, and the optical fiber ointment is filled in the stainless steel micro-tube.

4. The high strength lateral pressure resistant stainless steel armored cable of claim 1, wherein: the outer sheath is an extruded TPU outer sheath or a PVC outer sheath or a PE outer sheath.