Submarine photoelectric composite cable

Abstract

The utility model discloses a submarine photoelectric composite cable, which comprises a cable core and an outer sheath wrapped on the outer layer of the cable core, the cable core comprises a plurality of wire cores and fillers, and the wire cores comprise control wire cores, signal wires, optical fiber units and power wires; the structure of the outer sheath is sequentially provided with a wrapping tape, an inner protection layer, a waterproof layer and an outer protection layer from inside to outside. The cable is reasonable in structural design, and has the following beneficial effects: the cable integrates multiple functions of the control wire core, the signal wire, the optical fiber unit, the power line and the like, so that the cable can complete transmission of electric energy and data and signal control at the same time; meanwhile, the inner and outer protection layers and the waterproof layer are arranged to ensure that the cable has good water tightness and prevent liquid such as seawater from permeating into the interior. And meanwhile, corrosive substances in seawater can be resisted, and stable performance is ensured when the cable is used underwater for a long time.

Description

Technical Field

[0001] The utility model relates to the technical field of cables, in particular to a submarine optical and electrical composite cable. Background Art

[0002] A cable is a device for transmitting electrical energy or signals. It usually consists of several or several groups of wires and has the characteristics of internal power conduction and external insulation. Cables can be used to transmit electrical (magnetic) energy and information, and realize the conversion of electromagnetic energy. They are widely used in fields such as urban underground power grids, outgoing lines of power stations, internal power supply of industrial and mining enterprises, and underwater transmission lines across rivers and seas.

[0003] A submarine optical and electrical composite cable is a special cable used in the marine environment. It not only needs to transmit electricity but also needs to transmit data and signals, so higher requirements are put forward for the performance and reliability of the cable. For example, in the field of oil and gas platform exploitation, real-time monitoring of the conditions of oil and gas platforms is crucial for improving work efficiency and exploitation benefits. With the development of marine resources and the increase in marine engineering, the demand for cables that can work stably in harsh marine environments is increasing day by day. Such cables need to have characteristics such as salt mist resistance, seawater resistance, and impact resistance to adapt to conditions such as high pressure, high temperature, salt mist, and ocean currents in the marine environment. Content of the Utility Model

[0004] The purpose of the utility model is to provide a submarine optical and electrical composite cable that can meet the demand for cables that work stably in harsh marine environments.

[0005] To achieve the above purpose, the technical solution of the utility model provides a submarine optical and electrical composite cable, which includes a cable core and an outer sheath wrapped around the outer layer of the cable core. The cable core includes several wire cores and fillers. The wire cores include control wire cores, signal wires, optical fiber units, and power wires; the structure of the outer sheath is sequentially provided with a tape, an inner protective layer, a waterproof layer, and an outer protective layer from the inside to the outside.

[0006] Further, the cable core further includes a tensile strip; the optical fiber unit is arranged at the center of the cable core, and the tensile strip, control wire core, signal wire, and power wire are dispersedly arranged around the optical fiber unit. Fillers are arranged in the gaps in the cable core.

[0007] Further, the number of the power wires and the tensile strips is 2.

[0008] Further, the optical fiber unit is a multimode optical fiber unit. The multimode optical fiber unit includes a group of 6×62.5 / 125 graded-index optical fibers, where two are 62.5μm multimode optical fibers and four are 125μm multimode optical fibers.

[0009] Further, the optical fiber unit further includes a polyurethane (TPU) sheath, and the polyurethane sheath is wrapped around the outer layer of the combined tapered optical fiber.

[0010] Further, the control core wire is structured such that a first conductor, a first mylar layer, a first shielding layer, and a first sheath are sequentially arranged from the inside out; the first conductor further includes a first insulating layer, and the number of the first conductors is 4, and the 4 first conductors are wrapped and fixed by the first mylar layer.

[0011] Further, the signal wire is structured such that a second conductor, a second mylar layer, a second shielding layer, and a second sheath are sequentially arranged from the inside out; the second conductor further includes a second insulating layer, and the number of the second conductors is 2, and the 2 second conductors are wrapped and fixed by the second mylar layer.

[0012] Further, the power cord is structured to include a third conductor and a third insulating layer that wraps the third conductor, and a bulletproof wire is further arranged inside the third conductor.

[0013] Further, the first conductor, the second conductor, and the third conductor are Class 6 tinned copper conductors, which are stranded by multiple strands of tinned copper wires; the first insulating layer, the second insulating layer, and the third insulating layer are high-density polyethylene layers; the first mylar layer and the second mylar layer are one layer of high-temperature resistant mylar layers; the first shielding layer and the second shielding layer are braided shielding layers, and the braided shielding layer is a tinned copper wire braided shielding layer with a braiding density ≥ 80%; the first sheath and the second sheath are TPU sheaths.

[0014] Further, the filler is a waterproof filling cord; the tensile strip is a TPE tensile strip; the tape is a non-woven fabric tape; the inner protective layer is a TPU sheath; the waterproof layer is a water-blocking tape; the outer protective layer is a TPU sheath.

[0015] In summary, the device structure of the present utility model is reasonably designed. By applying the technical solution of the present utility model, the following beneficial effects are achieved: This cable integrates multiple functions such as a control core wire, a signal wire, an optical fiber unit, and a power cord into one, enabling the cable to simultaneously complete the transmission of electric energy and data and signal control; at the same time, the inner and outer protective layers and the waterproof layer are provided to ensure that the cable has good water tightness and prevent liquids such as seawater from seeping into the interior. At the same time, it can resist corrosive substances in seawater and ensure stable performance during long-term underwater use. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a schematic cross-sectional structure diagram of the submarine hybrid electro-optical cable of the present utility model;

[0017] Explanation of the reference numerals: 1-control line core, 101-first conductor, 102-first insulation layer, 103-first Mylar layer, 104-first shielding layer, 105-first sheath; 2-filler; 3-signal line, 301-second conductor, 302-second insulation layer, 303-second Mylar layer, 304-second shielding layer, 305-second sheath; 4-tensile strip; 5-power line, 501-third conductor, 502-bulletproof wire, 503-third insulation layer; 6-optical fiber unit; 7-tape; 8-inner protective layer; 9-waterproof layer; 10-outer protective layer. DETAILED DESCRIPTION

[0018] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention, but this does not constitute a limitation on the protection scope of the present invention.

[0019] In the present invention, for a clearer description, the following explanation is made: the observer faces the attached Figure 1 For observation, the left front side of the observer is set as the front, the right rear side of the observer is set as the rear, the left rear side of the observer is set as the left, the right front side of the observer is set as the right, the top of the observer is set as the top, and the bottom of the observer is set as the bottom. It should be pointed out that the terms "front end", "rear end", "left side", "right side", "middle", "top", "bottom" and the like in the text indicate the orientation or position relationship based on the orientation or position relationship set in the drawings, which is only for the convenience of clearly describing the utility model, and does not indicate or imply that the structure or component referred to must have a specific orientation or be constructed in a specific orientation, and therefore cannot be understood as a limitation on the utility model. In addition, the terms "first", "second", "third", and "fourth" are only used for the purpose of clarifying or simplifying the description, and cannot be understood as indicating or implying relative importance or quantity.

[0020] See also Figure 1 The utility model provides a submarine optoelectronic composite cable, including a cable core and an outer sheath wrapped around the outer layer of the cable core, the cable core includes a plurality of wire cores and a filler 2, the wire core includes a control wire core 1, a signal wire 3, an optical fiber unit 6 and a power wire 5; the structure of the outer sheath is sequentially provided with a wrapping tape 7, an inner protective layer 8, a waterproof layer 9 and an outer protective layer 10 from the inside to the outside.

[0021] As a preferred embodiment of the utility model, the cable core also includes a tensile strip 4; the optical fiber unit 6 is arranged at the center of the cable core, the tensile strip 4, the control core 1, the signal line 3 and the power line 5 are dispersed around the optical fiber unit 6, and a filler 2 is arranged in the gap in the cable core.

[0022] Specifically, the number of the power lines 5 and the tensile strips 4 is two.

[0023] Specifically, the optical fiber unit 6 is a multimode optical fiber unit. The multimode optical fiber unit includes a group of 6×62.5 / 125 graded-index optical fibers, among which two are 62.5-μm multimode optical fibers and four are 125-μm multimode optical fibers. Specifically, the optical fiber unit further includes a polyurethane (TPU) sheath, and the polyurethane sheath wraps around the outer layer of the combined graded-index optical fibers.

[0024] The optical fiber unit 6 adopts a group of 6×62.5 / 125 graded-index optical fibers. Among the 6×62.5 / 125 graded-index optical fibers, two are 62.5-μm multimode optical fibers and four are 125-μm multimode optical fibers. A polyurethane (TPU) sheath is adopted, which has low-temperature flexibility, tear resistance, improved swing and bending performance, etc., and is used as the unit for optical signal transmission in the system.

[0025] Specifically, the structure of the control core 1 is successively provided with a first conductor 101, a first mylar layer 103, a first shielding layer 104, and a first sheath 105 from the inside to the outside; the first conductor 101 further includes a first insulating layer 102, and the number of the first conductors 101 is 4. The 4 first conductors 101 are wrapped and fixed by the first mylar layer 103.

[0026] Specifically, the structure of the signal line 3 is successively provided with a second conductor 301, a second mylar layer 303, a second shielding layer 304, and a second sheath 305 from the inside to the outside; the second conductor 301 further includes a second insulating layer 302, and the number of the second conductors 301 is 2. The 2 second conductors 301 are wrapped and fixed by the second mylar layer 303.

[0027] Specifically, the structure of the power line 5 includes a third conductor 501 and a third insulating layer 503 that wraps the third conductor 501. A bulletproof wire 502 is further arranged inside the third conductor 501.

[0028] Specifically, the first conductor 101, the second conductor 301, and the third conductor 501 are class 6 tinned copper conductors, which are stranded by multiple strands of tinned copper wires; the first insulating layer 102, the second insulating layer 302, and the third insulating layer 503 are high-density polyethylene layers; the first mylar layer 103 and the second mylar layer 303 are one layer of high-temperature resistant mylar layers; the first shielding layer 104 and the second shielding layer 304 are braided shielding layers. The braided shielding layer is a tinned copper wire braided shielding layer, and the braiding density ≥ 80%; the first sheath 105 and the second sheath 305 are TPU sheaths.

[0029] The first conductor 101, the second conductor 301, and the third conductor 501 adopt class 6 tinned copper wires, which are stranded by multiple strands of tinned copper wires and have good bending characteristics. Tinned copper has good electrical conductivity; the surface coating of tinned copper can prevent the oxidation of copper, improve its anti-corrosion performance, and has good mechanical properties, capable of withstanding various physical impacts and abrasions.

[0030] The insulating materials of the first insulating layer 102, the second insulating layer 302, and the third insulating layer 503 are made of high-density polyethylene (HDPE), which can not only provide good insulation performance but also resist the erosion of seawater and other harmful substances.

[0031] The first mylar layer 103 and the second mylar layer 303 are a layer of high-temperature resistant mylar. A layer of high-temperature resistant mylar is wrapped around before the cable is braided, effectively protecting the wire core from damage. The main purpose of wrapping the high-temperature resistant mylar is to provide an additional insulating and protective layer to enhance the performance and stability of the cable in a high-temperature environment. The chemical corrosion resistance can effectively improve the service life and safety of the cable.

[0032] The first shielding layer 104 and the second shielding layer 304 are braided shielding layers. Tinned copper wires are used to braid the shielding outside the mylar, and the braiding density is ≥80%. The main purpose is to prevent electrostatic interference, electromagnetic induction, crosstalk induction, and interference generated by other signal lines in the energy storage system, ensuring the normal operation of system transmission.

[0033] The first sheath 105 and the second sheath 305 are TPU sheaths, made of TPU sheath material. The TPU sheath has outstanding load-bearing capacity, impact resistance, and shock absorption performance. It has a high tensile strength and elongation at break, and can maintain good elasticity and toughness even at high hardness. It has good oil resistance, wear resistance, environmental resistance, weather resistance, corrosion resistance, low-temperature flexibility, tear resistance, etc.

[0034] Specifically, the filler 2 is a waterproof filling rope; the tensile bar 4 is a TPE tensile bar; the tape 7 is a non-woven tape; the inner protective layer 8 is a TPU sheath; the waterproof layer 9 is a water-blocking tape; the outer protective layer 10 is a TPU sheath.

[0035] The waterproof filling rope is used as the filler 2 to fill the voids inside the cable, preventing moisture and other harmful substances from entering the cable, thereby protecting the cable from damage. The waterproof filling rope can improve the flexibility and tensile resistance of the cable and extend the service life of the cable.

[0036] Two TPE tensile bars are added to the wire core, which has strong tensile and compressive capabilities and excellent low-temperature and high-temperature resistance.

[0037] When cabling, non-woven fabric is used for wrapping, which can prevent the cable core from loosening or deforming when bent, ensuring the roundness and tightness of the cable core.

[0038] The inner protective layer 8 is made of TPU sheath material. The TPU sheath has outstanding load-bearing capacity, impact resistance, and shock absorption performance. It has a high tensile strength and elongation at break, and can maintain good elasticity and toughness even at high hardness. It has good waterproofness, oil resistance, wear resistance, environmental resistance, weather resistance, corrosion resistance, low-temperature flexibility, tear resistance, etc.

[0039] The waterproof layer 9 is wrapped with a water-blocking tape, which is used to prevent water molecules from entering the cable through the gaps in the cable, so as to ensure the electrical performance and service life of the cable. The use of the water-blocking tape can prevent the cable from being eroded by moisture underwater or in a humid environment, thereby improving the water resistance and corrosion resistance of the cable.

[0040] The outer protective layer 10 is made of TPU sheath material, and the TPU sheath has outstanding load-bearing capacity, impact resistance and shock absorption performance. It has high tensile strength and elongation at break, and can maintain good elasticity and toughness even at high hardness. It has good waterproofness, oil resistance, wear resistance, environmental resistance, weather resistance, corrosion resistance, low temperature flexibility, tear resistance, etc.

[0041] The utility model provides a submarine optical and electrical composite cable, which integrates multiple functions such as optical fiber, power cable, signal line, control core wire, etc. The cable adopts a strengthened conductor structure and high-tensile elements to ensure that it will not break under a large tensile force. The cable is designed with good tensile and bending resistance, and can maintain stable performance even in a complex underwater environment. Due to the use of high-quality materials and advanced production processes, the seawater-proof optical and electrical composite cable has a long service life and reliability, reducing the frequency of maintenance and replacement. The sheath of the cable is made of materials resistant to seawater erosion and can be immersed in seawater for a long time without damage, ensuring the normal operation of the cable. It is widely used in marine engineering, underwater communication, submarine optical cables and underwater sensor networks, etc., demonstrating the applicability and reliability of the seawater-proof optical and electrical composite cable in a harsh marine environment. Its main features are as follows:

[0042] 1. High flexibility, resistance to folding and winding

[0043] The conductor adopts Class 6 tinned copper wire, which is stranded by multiple strands of tinned copper wire. Among them, 1000D bulletproof wire is added to the power line conductor, effectively improving its swing and bending performance, and having good high flexibility and folding resistance.

[0044] 2. Multifunctionality

[0045] The submarine optical and electrical composite cable integrates multiple functions such as optical fiber, power cable, signal line, control core wire, etc., enabling the cable to simultaneously complete the transmission of electric energy, data and signal control.

[0046] 3. Waterproofness and seawater corrosion resistance

[0047] Through special sealing technology, it is ensured that the cable has good water tightness to prevent liquids such as seawater from seeping into the interior. At the same time, it can resist corrosive substances in seawater to ensure stable performance during long-term underwater use.

[0048] 4. Stable signal transmission

[0049] Through a special shielding design, it can effectively resist electromagnetic interference and ensure the stability and reliability of signal transmission.

[0050] 5. High tensile strength

[0051] To meet the tensile requirements of underwater operations, the cable adopts a reinforced conductor structure and high-tensile elements to ensure that it will not break under large tensile forces.

[0052] 6. Environmental adaptability

[0053] The underwater composite monitoring cable has properties such as softness, fold resistance, tensile strength, waterproofness, oil resistance, corrosion resistance, anti-microbial, and anti-hydrolysis, and can adapt to various harsh underwater environments.

[0054] The above are the preferred embodiments of the present utility model. It should be noted that for those of ordinary skill in the art, without departing from the principle of the present utility model, several improvements and refinements can be made, and these improvements and refinements are also regarded as the protection scope of the present utility model.

Claims

1. An undersea optical and electrical composite cable, comprising a cable core and an outer sheath wrapped around the outer layer of the cable core, characterized in that: The cable core includes a plurality of cores and fillers. The cores include a control core, signal lines, an optical fiber unit, and a power line. The structure of the outer sheath is sequentially provided with a tape, an inner protective layer, a waterproof layer, and an outer protective layer from inside to outside.

2. The submarine optical and electrical composite cable according to claim 1, characterized in that: The cable core further includes a tensile strip. The optical fiber unit is disposed at the center of the cable core. The tensile strip, the control core, the signal lines, and the power line are dispersedly disposed around the optical fiber unit. Fillers are disposed in the gaps in the cable core.

3. The submarine optical and electrical composite cable according to claim 2, wherein: The number of the power lines and the tensile strips is 2.

4. The submarine optical and electrical composite cable according to any one of claims 2-3, characterized in that: The optical fiber unit is a multimode optical fiber unit. The multimode optical fiber unit includes a group of 6×62.5 / 125 graded-index optical fibers, where two are 62.5-μm multimode optical fibers and four are 125-μm multimode optical fibers.

5. The submarine optical and electrical composite cable according to claim 4, wherein: The optical fiber unit further includes a polyurethane sheath. The polyurethane sheath wraps the outer layer of the combined graded-index optical fibers.

6. The submarine optoelectronic composite cable according to claim 2 or 5, wherein: The structure of the control core is sequentially provided with a first conductor, a first mylar layer, a first shielding layer, and a first sheath from inside to outside. The first conductor further includes a first insulating layer. The number of the first conductors is 4, and the 4 first conductors are wrapped and fixed by the first mylar layer.

7. The submarine hybrid electro-optical cable according to claim 6, wherein: The structure of the signal line is sequentially provided with a second conductor, a second mylar layer, a second shielding layer, and a second sheath from inside to outside. The second conductor further includes a second insulating layer. The number of the second conductors is 2, and the 2 second conductors are wrapped and fixed by the second mylar layer.

8. The submarine optical and electrical composite cable according to claim 7, characterized in that: The structure of the power line includes a third conductor and a third insulating layer that wraps the third conductor. Bulletproof wires are further disposed in the third conductor.

9. The submarine optical and electrical composite cable according to claim 8, wherein: The first conductor, the second conductor, and the third conductor are Class 6 tinned copper conductors, which are stranded by multiple strands of tinned copper wires. The first insulating layer, the second insulating layer, and the third insulating layer are high-density polyethylene layers. The first mylar layer and the second mylar layer are one layer of high-temperature resistant mylar layers. The first shielding layer and the second shielding layer are braided shielding layers. The braided shielding layer is a tinned copper wire braided shielding layer, and the braiding density is ≥80%. The first sheath and the second sheath are TPU sheaths.

10. The submarine optical and electrical composite cable according to claim 9, characterized in that: The filler is a waterproof filling cord. The tensile strip is a TPE tensile strip. The tape is a non-woven fabric tape. The inner protective layer is a TPU sheath. The waterproof layer is a water-blocking tape. The outer protective layer is a TPU sheath.

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