Watertight floating differential signal ocean exploration cable

Abstract

The utility model relates to the technical field of cables, in particular to a watertight floating differential signal ocean exploration cable, which comprises an integral cable core and a protection structure arranged outside the integral cable core. Wherein the integral cable core comprises a differential signal cable, a control cable and a power cable; the differential signal cable comprises a plurality of twisted-pair structures, each twisted-pair structure comprises two differential signal wire cores which are used for transmitting two signals with the same amplitude and opposite phases, and data are obtained through the difference value of the two signals. When interference occurs, interference signals act on the two differential signal wire cores at the same time, obtained data are not affected, and the anti-interference capacity of signal transmission is improved. The problem that the weight of the cable is increased due to the metal shielding layer in the prior art is solved. In addition, the cable can bear certain underwater pressure and water is prevented from entering the cable by filling the water-blocking glue and the water-blocking tape; by arranging the buoyancy filler and the buoyancy adjusting layer, the density of the cable is reduced.

Description

Technical Field

[0001] This utility model relates to the field of cable technology, specifically to a watertight floating differential signal marine detection cable. Background Technology

[0002] Marine exploration cables are cables laid on the seabed or underwater to transmit data, power, or control signals. With the continuous development of underwater exploration, the requirements for underwater exploration systems are constantly increasing, which places higher demands on the cables used in conjunction with them. Marine exploration cables are typically installed on submersibles, underwater robots, buoys, or other underwater equipment. To support marine exploration missions, the cables must possess high tensile strength, corrosion resistance, waterproofing and sealing properties, zero or low buoyancy, and high stability in signal transmission. Marine exploration signals are generally transmitted using optical fibers or communication cables, as communication cables have high requirements for signal interference immunity.

[0003] To address this issue, existing technologies typically employ a metal shielding layer on the outside of the cable to resolve interference problems. For example, Chinese patent document CN213459141U discloses a marine longitudinally high-load-bearing detection cable. While this solution achieves interference suppression, it also increases the cable's weight. The metal shielding layer increases the cable's density, making it difficult to maintain stable levitation in underwater environments. Furthermore, this method requires reliable grounding of the shielding layer to avoid safety hazards. Utility Model Content

[0004] To address the shortcomings of existing technologies, this invention proposes a watertight floating differential signal marine detection cable, which solves the problem of increased cable weight caused by the use of metal shielding layers to ensure accurate detection data in existing technologies.

[0005] The watertight floating differential signal marine detection cable of this utility model adopts the following technical solution, including:

[0006] The overall cable core includes a differential signal cable and multiple cables. The differential signal cable is located at the center of the overall cable core and includes a twisted pair structure, water-blocking tape, and a tight-shrink layer. The twisted pair structure includes two differential signal cores of equal length and close proximity. Each differential signal core transmits two signals with the same amplitude but opposite phase. A differential signal insulation layer made of polyethylene is wrapped around the differential signal cores. The twisted pair structure is wrapped from the inside out with water-blocking tape and a tight-shrink layer. The water-blocking tape can be made of non-woven fabric. The tight-shrink layer is made of polyurethane. Multiple cables are arranged around the differential cable.

[0007] The protective structure, which wraps around the outside of the entire cable core, includes a tensile layer and an outer sheath arranged sequentially from the inside out.

[0008] Optionally, multiple sets of twisted pairs are provided, with multiple sets of twisted pairs arranged along the circumference of the entire cable core. The gaps between the multiple sets of twisted pairs are filled with water-blocking adhesive, and water-blocking tape and tight-packing layer are wrapped around the outside of the multiple twisted pairs.

[0009] Optionally, the multiple cables include a control cable and multiple power cables; the power cables are used to provide power supply; the control cables are used to provide control signals; the control cable includes multiple stranded cable units, each cable unit including a conductor and a control core insulation layer wrapped around the conductor; the power cables include a conductor and a power core insulation layer wrapped around the conductor; the gaps in the integral cable core are filled with flexible water-blocking adhesive, and the integral cable core is provided with a water-blocking tape.

[0010] Optionally, both the control and power conductors use Category 6 tin-plated conductors, while the differential signal conductors use Category 1 conductors.

[0011] Optionally, a buoyancy filler is provided in the gap of the integral cable core, and the buoyancy filler is made of foamed elastomer; the protective layer also includes a buoyancy adjustment layer, which is located between the tensile layer and the integral cable core, and the buoyancy adjustment layer is made of foamed elastomer.

[0012] Optionally, the volume calculation formula for the buoyancy regulating layer is: ;in For the volume of the buoyancy adjustment layer, The density of seawater, Let the volume of seawater be . The density of each structural material of the cable, Volume of each structural material of the cable The density of the buoyancy regulating layer.

[0013] Optionally, the tensile layer is woven from Kevlar fibers with a strength greater than 1500 MPa and a weaving density of not less than 80%.

[0014] Optionally, the cable outer sheath may be made of polyurethane material.

[0015] The beneficial effects of this utility model are as follows: When conducting marine exploration, the watertight floating differential signal marine detection cable of this utility model transmits signals through differential signal cables. After receiving two signals, the signal receiving end connected to its end detects the difference between the two signals to obtain the detection data. When interference signals occur, the interference signals will act on both differential signal cores simultaneously, and the difference between the two will not change, so the detection data will not be affected. This solves the problem in the prior art of increasing cable weight due to the setting of a metal shielding layer to ensure accurate detection data.

[0016] Furthermore, by setting multiple twisted pair structures to provide multiple transmission channels, the anti-interference capability is further improved; by filling with water-blocking adhesive and water-blocking tape, the cable can withstand a certain underwater pressure and prevent water from entering the cable; by setting buoyancy filler and buoyancy adjustment layer, the cable density is reduced. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the cross-sectional structure of a watertight floating differential signal marine detection cable according to the present invention;

[0019] In the picture:

[0020] 100. Integral cable core; 110. Differential signal cable; 111. Differential signal core; 112. Differential signal insulation layer; 120. Water-blocking tape; 130. Tight-sheath layer; 140. Control cable; 141. Control core; 142. Control insulation layer; 150. Power cable; 151. Power core; 152. Power insulation layer; 160. Water-blocking adhesive; 170. Buoyancy filler;

[0021] 200. Protective structure; 210. Tensile layer; 220. Outer protective layer; 230. Buoyancy adjustment layer. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0023] like Figure 1 As shown in the figure, the watertight floating differential signal marine detection cable provided in this embodiment of the present invention includes an integral cable core 100 and a protective structure 200.

[0024] The integral cable core 100 includes a differential signal cable 110 and multiple cables. The differential signal cable 110 is located at the center of the integral cable core 100. The differential signal cable 110 includes a twisted pair structure, a water-blocking tape 120, and a tight-coating layer 130. The twisted pair structure includes two differential signal cores 111, which are of equal length and closely spaced. The two differential signal cores 111 transmit two signals respectively, with the two signals having the same amplitude but opposite phase. A differential signal insulation layer 112 is sleeved on the outside of the differential signal cores 111, and the differential signal insulation layer 112 is made of polyethylene material. The twisted pair structure is wrapped from the inside out with a water-blocking tape 120 and a tight-coating layer 130. The water-blocking tape 120 can be a non-woven water-blocking tape. The tight-coating layer 130 is made of polyurethane material. Multiple cables are arranged around the differential cable.

[0025] The protective structure 200 is wrapped around the outside of the overall cable core 100. The protective structure 200 includes a tensile layer 210 and an outer sheath 220 arranged sequentially from the inside to the outside.

[0026] When conducting marine exploration, signals are transmitted through differential signal cable 110. After receiving two signals, the signal receiver at the end of the cable detects the difference between the two signals to obtain the exploration data. When interference signals occur, the interference signals will act on both differential signal cores 111 simultaneously, and the difference between the two will not change, so the exploration data will not be affected. This solves the problem of increasing cable weight caused by setting a metal shielding layer in the existing technology to ensure accurate exploration data.

[0027] In a further embodiment, multiple sets of twisted-pair structures are provided, arranged circumferentially along the entire cable core 100. Water-blocking adhesive 160 is filled in the gaps between the multiple sets of twisted-pair structures, and water-blocking tape 120 and a tight-fitting layer 130 are wrapped around the outside of the multiple twisted-pair structures. Figure 1 As shown, there are four sets of twisted-pair structures. By setting multiple twisted-pair structures, multiple transmission channels are provided, further improving the anti-interference capability. The multiple cables include one control cable 140 and three power cables 150; the power cable 150 is used to provide power supply; the control cable 140 is used to provide control signals; the control cable includes multiple twisted cable units, each cable unit including a control core 141 and a control insulation layer 142 wrapped around the control core 141; the power cable 150 includes a power core 151 and a power insulation layer 152 wrapped around the power core 151; the gaps in the integral cable core 100 are filled with flexible water-blocking adhesive 160, and a water-blocking tape 120 is provided on the outside of the integral cable core 100; the filling with water-blocking adhesive 160 and water-blocking tape 120 ensures that the cable can withstand a certain underwater pressure and prevents water ingress into the cable.

[0028] In a further embodiment, both the control core 141 and the power core 151 are made of Category 6 tin-plated conductors, and the differential signal core 111 is made of Category 1 conductors, giving the cable the characteristics of being flexible and oxidation resistant.

[0029] In a further embodiment, a buoyancy filler 170, made of foamed elastomer, is disposed in the gaps of the integral cable core 100. This ensures cable flexibility while maintaining cable roundness and reducing overall cable density. The protective layer also includes a buoyancy adjustment layer 230, located between the tensile layer 210 and the integral cable core 100. The buoyancy adjustment layer 230 is also made of foamed elastomer. The volume calculation formula for the buoyancy adjustment layer 230 is as follows: ;in The buoyancy regulating layer has a volume of 230. The density of seawater, Let the volume of seawater be . The density of each structural material of the cable, Volume of each structural material of the cable To adjust the density of the buoyancy adjustment layer 230, the density of the cable is reduced by setting the buoyancy filler 170 and the buoyancy adjustment layer 230, ensuring that the cable achieves zero buoyancy in seawater, thereby keeping the cable in a stable suspended state in the underwater environment.

[0030] In a further embodiment, the tensile layer 210 is woven from Kevlar fibers with a strength greater than 1500 MPa and a weaving density of not less than 80%, thereby enabling the cable to bear the weight of the underwater detection equipment and preventing the cable from being damaged by axial tensile force.

[0031] In a further embodiment, the outer sheath 220 is made of polyurethane material, which gives the cable a certain degree of resistance to salt spray corrosion and flexibility.

[0032] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A watertight, floating, differential signal, oceanographic survey cable, characterized by, The utility model relates to a kind of cable, including: Integral cable core, including differential signal cable and multiple cables;Differential signal cable is located in the center of integral cable core, and differential signal cable includes twisted pair structure, water-blocking tape and tight wrapping layer;Twisted pair structure includes two differential signal wire cores, two differential signal wire cores are equal in length and close, two differential signal wire cores transmit two signals respectively, the amplitude of two signals is same, and phase is opposite;Differential signal wire core is externally provided with differential signal insulating layer, and differential signal insulating layer uses polyethylene material;Twisted pair structure is externally wrapped with water-blocking tape and tight wrapping layer from inside to outside, and water-blocking tape is non-woven water-blocking tape;Tight wrapping layer uses polyurethane material;Multiple cables are arranged around differential cable; Protective structure is wrapped in the outside of integral cable core, and protective structure includes tensile layer and outer sheath arranged in sequence from inside to outside.

2. A watertight, floating, differential signal, oceanographic cable according to claim 1, wherein, Twisted pair structure is provided with multiple groups, and multiple groups of twisted pair structure are arranged along the circumference of integral cable core, and gap between multiple groups of twisted pair structure is filled with water-blocking glue, and water-blocking tape and tight wrapping layer are wrapped in the outside of multiple twisted pair structures.

3. A watertight, floating, differential signal, oceanographic cable according to claim 2, wherein, Multiple cables include one control cable and multiple power cables;Power cable is used to provide power supply;Control cable is used to provide control signal;Control cable includes twisted multiple cable units, and each cable unit includes wire core and control core insulating layer wrapped in the outside of wire core;Power cable includes wire core and power core insulating layer wrapped in the outside of wire core;Gap in integral cable core is filled with flexible water-blocking glue, and the outside of integral cable core is provided with water-blocking tape.

4. A watertight, floating, differential signal, oceanographic cable according to claim 3, wherein, Control wire core and power wire core are both 6-class tinned conductor, and differential signal wire core is 1-class conductor.

5. A watertight, floating, differential signal, oceanographic cable according to claim 4, wherein, Gap in integral cable core is provided with buoyancy filler, and buoyancy filler is made of foamed elastomer;Protective layer further includes buoyancy adjusting layer, and buoyancy adjusting layer is located between tensile layer and integral cable core, and buoyancy adjusting layer is made of foamed elastomer.

6. A watertight, floating, differential signal, oceanographic cable according to any one of claims 1 to 5, characterized in that, Tensile layer is woven by kevlar fiber with strength greater than 1500MPa, and weaving density is not less than 80%.

7. A watertight, floating, differential signal, oceanographic survey cable according to claim 6, characterised in that, Outer sheath of cable uses polyurethane material.

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