Mooring tensile photoelectric composite cable

Abstract

The utility model discloses a mooring tensile photoelectric composite cable, which comprises a photoelectric composite cable core, a longitudinal waterproof layer, an inner sheath, a tensile layer and an outer sheath which are sequentially arranged from inside to outside, and is characterized in that the tensile layer comprises a plurality of nylon fiber armor layers which are sequentially arranged from inside to outside; the nylon fiber armor layer is composed of a plurality of nylon fiber ropes which are closely arranged in the circumferential direction, and gaps between the adjacent nylon fiber ropes are filled with water-blocking ointment. According to the utility model, the photoelectric composite cable core is arranged to realize a basic function, the nylon fiber armor layer arranged in multiple layers is adopted to replace a traditional metal steel wire armor layer, sufficient tensile strength is ensured, the weight of the cable is reduced, the toughness of the cable is improved, and the longitudinal waterproof layer is additionally arranged between the photoelectric composite cable core and the inner sheath, so that the tensile strength of the cable is improved. And the water-blocking ointment is filled between the adjacent nylon fiber ropes, so that the water tightness of the cable is improved, and the cable can better adapt to the marine environment.

Description

Technical Field

[0001] The utility model relates to the technical field of cables, in particular to a mooring and tensile fiber optic composite cable. Background Art

[0002] The vast ocean occupies 71% of the earth's surface area. The rich oil reserves at the bottom, countless manganese nodules and other resources attract some industrially developed countries to compete in ocean development. Deep diving technology is a necessary means for ocean development. It is a complete system composed of a deep submergence vehicle, a mother ship (surface support ship) and an onshore base. The deep submergence vehicle is the key part. In addition, in order to rescue a sunken submarine in deep sea, salvage a sunken ship in deep sea, conduct deep sea exploration, deep sea reconnaissance, etc., a deep submergence vehicle is required. The construction of a deep submergence vehicle is difficult, and its degree of electrification and automation is relatively high. The power device of a deep submergence vehicle generally uses a storage battery as the energy source, and a tethered submersible is powered by a cable from the mother ship. In order to reduce the life risk of personnel and increase the underwater operation time, people put forward the idea of remotely controlling an unmanned submersible with a mooring cable on the water surface. While transmitting signals and power, the mooring cable also has a certain strength. Due to sufficient power, the deep submergence vehicle can support complex detection equipment and large operation machinery for power consumption. The transmission of information and data exchange are fast and convenient, so it has a high overall decision-making ability and operation level, and is mainly used to perform underwater inspections, seabed explorations, seabed development and salvage, rescue and other tasks. All these detection systems and detection technologies are inseparable from the key component - the cable.

[0003] At present, most of the mooring fiber optic composite cables have poor water tightness. In order to ensure sufficient tensile strength, a steel wire armor structure is mostly adopted. Although this structure improves the tensile strength, the toughness of the cable is greatly reduced, and the overall weight is relatively heavy, so it cannot be better applied to the marine environment. Summary of the Utility Model

[0004] The purpose of the utility model is to provide a mooring and tensile fiber optic composite cable for the deficiencies of the prior art, which improves the water tightness of the cable, reduces the cable weight while ensuring sufficient tensile strength, improves the cable toughness, and can better adapt to the marine environment.

[0005] The technical solution for realizing the purpose of the utility model is:

[0006] A mooring and tensile fiber optic composite cable includes a fiber optic composite cable core, a longitudinal water blocking layer, an inner sheath, a tensile layer and an outer sheath which are arranged in sequence from inside to outside. The tensile layer includes multiple layers of nylon fiber armor layers which are arranged in sequence from inside to outside. The nylon fiber armor layer is composed of multiple nylon fiber ropes which are arranged closely along the circumferential direction. The gap between adjacent nylon fiber ropes is filled with water blocking grease.

[0007] Furthermore, the fiber-optic composite cable core includes a plurality of insulated cores arranged uniformly in the circumferential direction. Adjacent insulated cores are tangent to each other and form a fan-shaped gap with the longitudinal water-blocking layer. A light unit and a filling and strengthening part are arranged in the fan-shaped gap, and the light unit is located at the center of the filling and strengthening part.

[0008] Furthermore, the light unit includes, from inside to outside in sequence, an optical fiber inner core, a metal protection tube, an inner protection layer, a plastic strengthening layer, a water-blocking tape, and an outer protection layer. The optical fiber inner core includes a plurality of optical fibers and a filling paste filled in the metal protection layer.

[0009] Furthermore, the plastic strengthening layer includes a plurality of plastic strengthening tubes arranged closely in the circumferential direction. A water-blocking glue is filled in the gaps between adjacent plastic strengthening tubes, the water-blocking tape, and the inner protection layer.

[0010] Furthermore, the plastic strengthening tube is an FRP glass fiber reinforced plastic tube.

[0011] Furthermore, the metal protection tube is a stainless steel tube.

[0012] Furthermore, the insulated core includes a conductor stranded by a plurality of tinned copper wires and an EPR rubber insulation provided outside the conductor.

[0013] Furthermore, there are three insulated cores and three light units.

[0014] Furthermore, the longitudinal water-blocking layer is a wrapping tape with a double-layer overlapping rate of 0-5%.

[0015] Furthermore, both the inner sheath and the outer sheath are made of high-density polyethylene.

[0016] By adopting the above technical solutions, the utility model has the following beneficial effects:

[0017] (1) The utility model realizes the basic functions by setting the fiber-optic composite cable core, and uses a multi-layer nylon fiber armor layer to replace the traditional metal steel wire armor layer, which reduces the cable weight while ensuring sufficient tensile strength, improves the cable toughness. At the same time, a longitudinal water-blocking layer is added between the fiber-optic composite cable core and the inner sheath, and a water-blocking ointment is filled between adjacent nylon fiber ropes, thereby improving the water tightness of the cable and better adapting to the marine environment.

[0018] (2) By setting the filling and strengthening part in the cable core of the utility model, the tensile performance can be improved, the cable core can be made more round, and the light unit can be supported to better protect the light unit.

[0019] (3) In the optical unit of the present utility model, a plastic strengthening layer formed by arranging FRP glass fiber reinforced plastic pipes is used to replace the traditional metal strengthening layer, which further improves the flexibility of the optical and electrical composite cable and reduces the weight of the composite cable while ensuring the tensile strength.

[0020] (4) A water-blocking gel is provided inside the optical unit of the present utility model, which can effectively prevent moisture intrusion, thereby protecting the components inside the optical unit from the influence of a humid environment and further improving the water tightness.

[0021] (5) The insulated conductor core of the present utility model uses EPR rubber insulation to further improve the flexibility of the cable.

[0022] (6) The longitudinal water-blocking layer of the present utility model uses a double-layer lapped tape, and its lapping rate is carefully controlled between 0% and 5%. This not only ensures a tight fit but also effectively improves the overall waterproof ability.

[0023] (7) The present utility model is provided with three insulated conductor cores and three optical units, with a more compact structure and a simple layout, achieving power and signal transmission.

[0024] (8) The inner sheath and outer sheath of the present utility model are both made of high-density polyethylene, which has excellent abrasion resistance, tensile strength, and good chemical corrosion resistance. It can not only provide good physical protection against external damage but also resist the influence of harsh environmental factors, making the cable more flexible and maintaining stable and reliable performance in various complex installation environments. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to make the content of the present utility model easier to be clearly understood, the following further details the present utility model according to specific embodiments in conjunction with the drawings, where:

[0026] Figure 1 is a schematic structural diagram of the present utility model;

[0027] Figure 2 is a schematic structural diagram of the optical unit of the present utility model.

[0028] The reference numerals in the drawings are:

[0029] Optical and electrical composite cable core 1, insulated conductor core 1-1, conductor 1-1-1, EPR rubber insulation 1-1-2, optical unit 1-2, optical fiber inner core 1-2-1, metal protection tube 1-2-2, inner protection layer 1-2-3, plastic strengthening layer 1-2-4, water-blocking tape 1-2-5, outer protection layer 1-2-6, filling and strengthening part 1-3, longitudinal water-blocking layer 2, inner sheath 3, tensile layer 4, nylon fiber armor layer 4-1, water-blocking paste 4-2, outer sheath 5. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0030] To better understand the above technical solution, the above technical solution will be described in detail below in conjunction with the accompanying drawings of the specification and specific embodiments.

[0031] (Example 1)

[0032] As Figures 1 to 2 shown, the mooring tensile fiber optic composite cable includes a fiber optic composite cable core 1, a longitudinal water blocking layer 2, an inner sheath 3, a tensile layer 4, and an outer sheath 5 arranged in sequence from the inside to the outside. The tensile layer 4 includes multiple layers of nylon fiber armor layers 4-1 arranged in sequence from the inside to the outside. Each layer of nylon fiber armor layer 4-1 is composed of multiple nylon fiber ropes arranged tightly along the circumferential direction, and the gap between adjacent nylon fiber ropes is filled with water blocking ointment 4-2. Compared with the traditional metal armor layer, while ensuring sufficient tensile strength, the cable weight is reduced, the cable toughness is improved, and at the same time, a longitudinal water blocking layer 2 is added between the fiber optic composite cable core and the inner sheath, and water blocking ointment 4-2 is filled between adjacent nylon fiber ropes, thereby improving the water tightness of the cable and better adapting to the marine environment.

[0033] Specifically, the fiber optic composite cable core 1 includes multiple insulated cores 1-1 arranged uniformly along the circumferential direction. Adjacent two insulated cores 1-1 are tangent to each other and form a fan-shaped gap with the longitudinal water blocking layer 2. A light unit 1-2 and a filling and strengthening part 1-3 are arranged in the fan-shaped gap, and the light unit 1-2 is located at the center of the filling and strengthening part 1-3. The filling and strengthening part 1-3 provides support for the light unit 1-2, better protects the light unit, makes the cable core more round, and can improve the tensile performance to a certain extent. In this embodiment, both the insulated core 1-1 and the light unit 1-2 have three, with a more compact structure, simple arrangement, and realizing power and signal transmission.

[0034] The insulated core 1-1 includes a conductor 1-1-1 stranded by multiple tinned copper wires and an EPR rubber insulation 1-1-2 provided outside the conductor 1-1-1. EPR rubber is known for its excellent flexibility and elasticity. Without sacrificing electrical performance, it can make the cable have better bending performance. This material can not only withstand greater mechanical stress but also adapt to various temperature changes, ensuring that the cable can maintain good performance in different environments.

[0035] The optical unit 1-2 includes an optical fiber core 1-2-1, a metal protection tube 1-2-2, an inner sheath 1-2-3, a plastic strengthening layer 1-2-4, a water blocking tape 1-2-5, and an outer sheath 1-2-6, which are arranged in sequence from the inside to the outside. The optical fiber core 1-2-1 includes multiple optical fibers and a filling paste filled in the metal protection layer. The metal protection tube 1-2-2 is a stainless steel tube. The plastic strengthening layer 1-2-4 includes multiple plastic strengthening tubes arranged tightly in the circumferential direction. The gaps between adjacent plastic strengthening tubes, the water blocking tape 1-2-5, and the inner sheath 1-2-3 are filled with water blocking glue, which can effectively prevent moisture intrusion, thereby protecting the components in the optical unit from the influence of the humid environment and further improving the water tightness. The plastic strengthening tube is an FRP glass fiber reinforced plastic tube, which replaces the traditional metal strengthening layer, improves the flexibility of the optical and electrical composite cable and reduces the weight of the composite cable while ensuring the tensile strength.

[0036] The longitudinal water blocking layer 2 is a lapping tape with a double-layer lapping rate of 0-5%. It not only ensures a tight fit but also effectively improves the overall waterproof ability. The inner sheath 3 and the outer sheath 5 are both made of high-density polyethylene, which has excellent wear resistance, tensile strength, and good chemical corrosion resistance. It can not only provide good physical protection to prevent external damage but also resist the influence of harsh environmental factors, making the cable have higher flexibility and maintaining stable and reliable performance in various complex installation environments.

[0037] The utility model realizes the basic functions by setting an optical and electrical composite cable core, and uses a multi-layer nylon fiber armor layer to replace the traditional metal wire armor layer. While ensuring sufficient tensile strength, it reduces the weight of the cable, improves the toughness of the cable. At the same time, a longitudinal water blocking layer is added between the optical and electrical composite cable core and the inner sheath, and water blocking ointment is filled between adjacent nylon fiber ropes, thereby improving the water tightness of the cable and better adapting to the marine environment.

[0038] The above specific embodiments have further elaborated the purpose, technical solutions, and beneficial effects of the utility model. It should be understood that the above are only specific embodiments of the utility model and are not used to limit the utility model. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the utility model should be included in the protection scope of the utility model.

Claims

1. A mooring tensile fiber optic composite cable, characterized in that: It includes an optical and electrical composite cable core, a longitudinal water-blocking layer, an inner sheath, a tensile layer, and an outer sheath which are arranged in sequence from inside to outside. The tensile layer includes multiple layers of nylon fiber armor layers arranged in sequence from inside to outside. The nylon fiber armor layer is composed of multiple nylon fiber ropes arranged closely along the circumferential direction, and the gaps between adjacent nylon fiber ropes are filled with water-blocking ointment.

2. The tethered tensile fiber optic composite cable according to claim 1, wherein: The optical and electrical composite cable core includes multiple insulating cores arranged uniformly along the circumferential direction. Adjacent two insulating cores are tangent to each other and form a sector-shaped gap with the longitudinal water-blocking layer. A light unit and a filling and strengthening part are arranged in the sector-shaped gap, and the light unit is located at the center of the filling and strengthening part.

3. The tethered tensile fiber optic composite cable according to claim 2, wherein: The light unit includes an optical fiber inner core, a metal protection tube, an inner protection layer, a plastic strengthening layer, a water-blocking tape, and an outer protection layer which are arranged in sequence from inside to outside. The optical fiber inner core includes multiple optical fibers and a filling paste filled in the metal protection layer.

4. The tethered tensile fiber optic composite cable according to claim 3, characterized in that: The plastic strengthening layer includes multiple plastic strengthening tubes arranged closely along the circumferential direction, and the gaps between adjacent plastic strengthening tubes and the water-blocking tape and the inner protection layer are filled with water-blocking glue.

5. The tethered tensile fiber optic composite cable according to claim 4, characterized in that: The plastic strengthening tube is an FRP glass fiber reinforced plastic tube.

6. The tethered tensile fiber optic composite cable according to claim 3, wherein: The metal protection tube is a stainless steel tube.

7. A tethered and tensile fiber optic composite cable according to claim 2, wherein: The insulating core includes a conductor stranded by multiple tinned copper wires and an EPR rubber insulation provided outside the conductor.

8. A tethered tensile fiber optic composite cable according to claim 2, wherein: There are three insulating cores and light units respectively.

9. The tethered tensile fiber optic composite cable according to claim 1, characterized in that: The longitudinal water-blocking layer is a double-layer lapping tape with a lapping rate of 0 - 5%.

10. The tethered tensile fiber optic composite cable according to claim 1, characterized in that: Both the inner sheath and the outer sheath are made of high-density polyethylene.

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