Underwater optical cable containing reserved communication pipe

Abstract

The utility model provides an underwater optical cable containing a reserved communication pipe. Comprising a hollow communication tube, optical fiber units stranded and distributed around the communication tube in a concentric or SZ mode, a water-blocking material filled between the optical fiber units, a comprehensive water-blocking layer extruded on the outer side of the water-blocking material, an armor layer stranded on the outer side of the comprehensive water-blocking layer, and an outer sheath extruded on the outer side of the armor layer. The communication pipe comprises a stainless steel pipe, a reinforcing layer and an outer protective layer which are sequentially arranged from inside to outside; the optical fiber unit comprises a loose tube, and an optical fiber and fiber paste which are positioned in the loose tube; through the arrangement of the hollow communication pipe, when communication equipment and communication optical fibers need updating and upgrading or communication line expansion, a novel optical fiber unit can be guided into the reserved communication pipe by adopting an air blowing mode, a new optical cable does not need to be laid again, the project cost can be reduced, the construction period can be shortened, the novel optical fiber unit can be repeatedly updated, and the communication efficiency is improved. And the method has good practicability and social benefits.

Description

Technical Field

[0001] The utility model relates to the technical field of underwater optical cables, in particular to an underwater optical cable containing a reserved communication tube. Background Art

[0002] With the development and utilization of marine and lake resources, underwater optical cables have been widely used, but the installation and laying of underwater cables is much more difficult than on land, with a long period, high cost and great construction difficulty. With the replacement and upgrading of communication equipment and the application of new communication and control equipment, the original underwater communication optical cables cannot meet the needs, and new underwater communication optical cables need to be reinstalled. In this way, the optical cable lines will be re-surveyed and re-constructed, which will require a large period and cost investment, affecting the development and utilization of new resources.

[0003] In view of the above problems, the present application develops a new underwater optical cable which does not require the installation of new optical cables on the original optical cable substrate and can meet the requirements of communication and detection equipment. Utility Model Content

[0004] In view of the above-mentioned shortcomings of the prior art, the purpose of the utility model is to provide an underwater optical cable with a reserved communication pipe, which is used to solve the problem that after the communication equipment in the prior art is upgraded, the original underwater communication tube needs to be re-laid, which has a long construction period and high cost investment.

[0005] In order to achieve the above purpose and other related purposes, the utility model provides the following technical solutions:

[0006] The underwater optical cable with a reserved communication tube comprises a hollow communication tube, optical fiber units twisted and distributed around the communication tube in a concentric or SZ manner, a water-blocking material filled between the optical fiber units, a comprehensive water-blocking layer extruded on the outside of the water-blocking material, an armor layer twisted on the outside of the comprehensive water-blocking layer, and an outer sheath extruded on the outside of the armor layer; the communication tube comprises a stainless steel tube, a reinforcement layer and an outer sheath arranged in sequence from the inside to the outside; the optical fiber unit comprises a loose tube, an optical fiber and fiber paste located in the loose tube.

[0007] In one embodiment of the utility model, the material of the reinforcement layer is stainless steel wire, which is woven and wrapped around the outside of the stainless steel tube; the outer protective layer is extruded and arranged on the outside of the reinforcement layer, and the material of the outer protective layer is polyurethane.

[0008] In one embodiment of the utility model, the comprehensive water-blocking layer is composed of a metal composite tape and polyethylene. The metal composite tape is formed by longitudinal wrapping, and the polyethylene is formed by extrusion wrapping. The metal composite tape and the polyethylene are bonded together.

[0009] In an embodiment of the present invention, the water-blocking material is one or more of water-blocking yarn, water-blocking rope, and liquid silicone rubber.

[0010] In one embodiment of the present invention, the armor layer material is alloy-coated steel wire, and the coating thereof is an alloy containing three metals: zinc, aluminum, and magnesium.

[0011] In an embodiment of the present invention, the outer sheath is made of high-density polyethylene or polyurethane.

[0012] In an embodiment of the present invention, the number of the optical fiber units is six to twelve.

[0013] In one embodiment of the present invention, the optical fiber units are preferably six, and each loose tube contains twelve G652D optical fibers.

[0014] In one embodiment of the present invention, the armor layer is one or two layers.

[0015] In one embodiment of the present invention, the armor layer is preferably two layers, the inner layer has sixteen alloy-plated steel wires, and the outer layer has twenty-two alloy-plated steel wires.

[0016] As described above, the underwater optical cable with a reserved communication tube of the utility model has the following beneficial effects:

[0017] 1. The communication pipe in this application is composed of a stainless steel pipe, a reinforcement layer and an outer protective layer. The inner wall of the stainless steel pipe is smooth, high in strength, wear-resistant, and has good sealing performance, which is convenient for the introduction of air-blown new optical fiber units. The water-blocking ability of the optical cable can be improved by setting a water-blocking material and a comprehensive water-blocking layer, and the mechanical strength and compressive resistance of the optical cable can be improved by setting an armor layer, thereby ensuring that the optical cable can operate reliably for a long time.

[0018] 2. In this application, through the provision of a hollow communication tube, when communication equipment and communication optical fiber are replaced or upgraded or communication line expansion is needed, air blowing can be used to introduce the new optical fiber unit into the reserved communication tube to meet the new needs of communication and detection equipment. There is no need to re-lay new optical cables, which can reduce project costs and construction cycles, and new optical fiber units can be repeatedly updated, which has good practicality and social benefits. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 Shown is a schematic diagram of the structure of the utility model.

[0020] Component number description

[0021] 1. Communication pipe; 1.1. Stainless steel pipe; 1.2. Reinforcement layer; 1.3. Protective layer; 2. Optical fiber unit; 2.1. Loose tube; 2.2. Optical fiber; 2.3. Fiber jelly; 3. Water-blocking material; 4. Comprehensive water-blocking layer; 5. Armor layer; 6. Outer sheath. DETAILED DESCRIPTION

[0022] The following specific embodiments illustrate the implementation of the present invention, and those familiar with the technology can easily understand other advantages and effects of the present invention from the contents disclosed in this specification. It should be noted that the following embodiments and features in the embodiments can be combined with each other without conflict.

[0023] See also Figure 1 The utility model provides an underwater optical cable with a reserved communication tube, comprising a hollow communication tube 1, optical fiber units 2 twisted and distributed around the communication tube 1 in a concentric or SZ manner, a water-blocking material 3 filled between the optical fiber units 2, a comprehensive water-blocking layer 4 extruded on the outside of the water-blocking material 3, an armor layer 5 twisted on the outside of the comprehensive water-blocking layer 4, and an outer sheath 6 extruded on the outside of the armor layer 5; the communication tube 1 comprises a stainless steel tube 1.1, a reinforcement layer 1.2 and an outer sheath 1.3 arranged in sequence from the inside to the outside; the optical fiber unit 2 comprises a loose tube 2.1, an optical fiber 2.2 and a fiber paste 2.3 located in the loose tube 2.1.

[0024] In the present application, the communication tube 1 is composed of a stainless steel tube 1.1, a reinforcement layer 1.2 and an outer protective layer 1.3. The inner wall of the stainless steel tube 1.1 is smooth, has high strength, is wear-resistant, and has good sealing performance, which is convenient for air-blowing the new optical fiber unit 2 into the tube; the water-blocking ability of the optical cable can be improved by setting the water-blocking material 3 and the comprehensive water-blocking layer 4, and the mechanical strength and compressive resistance of the optical cable can be improved by setting the armor layer 5, thereby ensuring that the optical cable can operate reliably for a long time; in the present application, through the setting of the hollow communication tube 1, when the communication equipment and the communication optical fiber 2.2 are replaced or upgraded or the communication line needs to be expanded, the new optical fiber unit 2 can be introduced into the reserved communication tube 1 by air blowing, so as to meet the new needs of the communication and detection equipment, without the need to re-lay the new optical cable, thereby reducing the project cost and construction period, and the new optical fiber unit 2 can be repeatedly updated, which has good practicality and social benefits.

[0025] The reinforcement layer 1.2 is made of stainless steel wire, which is braided and wrapped around the outside of the stainless steel tube 1.1; the outer sheath 1.3 is extruded and arranged on the outside of the reinforcement layer 1.2, and the material of the outer sheath 1.3 is polyurethane. Stainless steel wire has the characteristics of corrosion resistance, high strength and good toughness. The reinforcement layer 1.2 can be used to fix the outer sheath 1.3 and enhance the tensile strength of the optical cable.

[0026] The comprehensive water-blocking layer 4 is composed of a metal composite tape and polyethylene, the metal composite tape is formed by longitudinal wrapping, the polyethylene is formed by extrusion, and the metal composite tape and polyethylene are bonded together. Since the optical cable itself has a strong water absorption performance, it will cause water penetration and damage to the optical cable, affecting normal use. In order to ensure that the optical cable is not corroded by water and to increase the service life of the optical cable, a comprehensive water-blocking layer 4 is set. In this application, the metal composite tape formed by longitudinal wrapping and the polyethylene extruded on the metal composite tape form a comprehensive water-blocking layer 4, which has the characteristics of barrier, corrosion resistance and aging resistance, and can play a role in insulating and protecting the optical cable.

[0027] The water-blocking material 3 is one or more of water-blocking yarn, water-blocking rope, and liquid silicone rubber. The gaps in the optical fiber unit 2 are filled with water-blocking yarn, water-blocking rope, and liquid silicone rubber, which have good water-blocking performance, are resistant to high temperatures, and can expand rapidly when exposed to water.

[0028] The armor layer 5 is made of alloy-coated steel wire, and its coating is an alloy containing three metals: zinc, aluminum and magnesium. The alloy-coated steel wire has a good corrosion resistance life and effectively improves the service life of the underwater optical cable. The material of the outer sheath 6 is high-density polyethylene or polyurethane. The number of the optical fiber units 2 is six to twelve. The optical fiber units 2 are preferably six, and each loose tube 2.1 contains twelve G652D optical fibers 2.2.

[0029] The armor layer 5 is one or two layers; preferably, the armor layer 5 is two layers, with sixteen alloy-plated steel wires in the inner layer and twenty-two alloy-plated steel wires in the outer layer. The armor layer 5 can effectively improve the tensile strength and wear resistance of the optical cable, and can effectively prevent the optical cable from being corroded by chemicals and bitten by mice, and effectively resist external impact.

[0030] In the present application, the inner wall of the stainless steel tube 1.1 is smooth, has high strength, is wear-resistant, and has good sealing performance, which is convenient for air-blowing the new optical fiber unit 2 into the tube; the water-blocking ability of the optical cable can be improved by setting the water-blocking material 3 and the comprehensive water-blocking layer 4, and the mechanical strength and compressive resistance of the optical cable can be improved by setting the armor layer 5, thereby ensuring that the optical cable can operate reliably and for a long time; in the present application, by setting the hollow communication tube 1, when the communication equipment and the communication optical fiber 2.2 are replaced and upgraded or the communication line needs to be expanded, the new optical fiber unit 2 can be introduced into the reserved communication tube 1 by air blowing, so as to meet the new needs of the communication and detection equipment, without the need to re-lay the new optical cable, thereby reducing the project cost and construction period, and the new optical fiber unit 2 can be repeatedly updated, which has good practicality and social benefits.

[0031] The above embodiments are merely illustrative of the principles and effects of the present invention, and are not intended to limit the present invention. All equivalent modifications or changes made by those skilled in the art without departing from the spirit and technical ideas disclosed in the present invention shall still be covered by the claims of the present invention.

Claims

1. An underwater optical cable with a reserved communication tube, characterized in that: The invention comprises a hollow communication tube (1), optical fiber units (2) twisted and distributed around the communication tube (1) in a concentric or SZ manner, a water-blocking material (3) filled between the optical fiber units (2), a comprehensive water-blocking layer (4) extruded on the outside of the water-blocking material (3), an armor layer (5) twisted on the outside of the comprehensive water-blocking layer (4), and an outer sheath (6) extruded on the outside of the armor layer (5); the communication tube (1) comprises a stainless steel tube (1.1), a reinforcement layer (1.2), and an outer sheath (1.3) arranged in sequence from the inside to the outside; The optical fiber unit (2) comprises a loose tube (2.1), an optical fiber (2.2) and a fiber paste (2.3) located in the loose tube (2.1).

2. The underwater optical cable with a reserved communication tube according to claim 1, characterized in that: The material of the reinforcement layer (1.2) is stainless steel wire, which is wrapped around the outside of the stainless steel tube (1.1) in a woven manner; the outer protective layer (1.3) is arranged on the outside of the reinforcement layer (1.2) in an extruded manner, and the material of the outer protective layer (1.3) is polyurethane.

3. The underwater optical cable with a reserved communication tube according to claim 1, characterized in that: The comprehensive water-blocking layer (4) is composed of a metal composite tape and polyethylene. The metal composite tape is formed by longitudinal packaging, and the polyethylene is formed by extrusion packaging. The metal composite tape and the polyethylene are bonded together.

4. The underwater optical cable with a reserved communication tube according to claim 1, characterized in that: The water-blocking material (3) is one or more of water-blocking yarn, water-blocking rope, and liquid silicone rubber.

5. The underwater optical cable with a reserved communication tube according to claim 1, characterized in that: The armor layer (5) is made of alloy-coated steel wire, and the coating is an alloy containing three metals: zinc, aluminum and magnesium.

6. The underwater optical cable with a reserved communication tube according to claim 1, characterized in that: The material of the outer sheath (6) is high-density polyethylene or polyurethane.

7. The underwater optical cable with a reserved communication tube according to claim 1, characterized in that: The number of the optical fiber units (2) is six to twelve.

8. The underwater optical cable with a reserved communication tube according to claim 7, characterized in that: There are six optical fiber units (2), and each loose tube (2.1) contains twelve G652D optical fibers (2.2).

9. The underwater optical cable with a reserved communication tube according to claim 1, characterized in that: The armor layer (5) is one or two layers.

10. The underwater optical cable with a reserved communication tube according to claim 9, characterized in that: The armor layer (5) consists of two layers, the inner layer has sixteen alloy-plated steel wires, and the outer layer has twenty-two alloy-plated steel wires.

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