Underwater robot operation monitoring composite cable

Abstract

The utility model discloses an underwater robot operation monitoring composite cable, comprising a cable core layer, a waterproof layer, a shielding layer and a protective layer which are successively distributed from inside to outside, the cable core layer is internally provided with an aramid fiber reinforcement member, an RS485 signal cable, a data optical cable, an audio cable and a water-blocking yarn, the waterproof layer comprises a first water-blocking tape, the shielding layer is a metal braided tape, and the protective layer is a metal braided tape. According to the composite cable provided by the utility model, a plurality of built-in data cables are adopted and are matched with the aramid fiber reinforcers and the water-blocking yarns, so that the composite cable not only has strong data transmission capability and good waterproof performance, but also has excellent bending performance, and the foaming PE inner sheath is matched with the PE outer sheath, so that certain buoyancy can be formed; the weight of the composite cable in water is reduced, and the metal braided shielding layer is adopted, so that the composite cable has good bending capability and is convenient to install and maintain.

Description

Technical Field

[0001] The utility model relates to the technical field of ship communication, in particular to a composite cable for monitoring underwater robot operations. Background Art

[0002] Remote Operated Vehicle is a type of unmanned underwater vehicle (UUV). The system generally consists of: power propulsion, remote control electronic communication device, camera, camera tilt pan, user peripheral sensor interface, real-time online display unit, navigation positioning device, automatic helmsman navigation unit, auxiliary lighting and Kevlar zero buoyancy tow cable and other unit components. With various functions, different types of remote controlled unmanned submersibles are used to perform different tasks and are widely used in various fields such as military, coast guard, maritime, customs, nuclear power, water conservancy, hydropower, offshore oil, fishery, maritime rescue, pipeline detection and marine scientific research. With the development of deep-sea equipment, the requirements for increasing cable transmission distance and signal transmission attenuation are getting higher and higher. More and more application scenarios require the combination of optoelectronics and the simultaneous realization of zero buoyancy and tensile retraction functions. The existing ordinary optoelectronic composite cables cannot meet the above special application scenarios. Utility Model Content

[0003] The utility model mainly solves the above-mentioned technical problems and provides a composite cable for monitoring the operation of an underwater robot.

[0004] In order to solve the above-mentioned technical problems, the utility model mainly adopts the following technical solutions:

[0005] The utility model discloses a composite cable for monitoring underwater robot operation, comprising a cable core layer, a waterproof layer, a shielding layer and a protective layer which are sequentially distributed from the inside to the outside. The cable core layer is provided with an aramid reinforcement, an RS485 signal cable, a data optical cable, an audio cable and a water-blocking yarn. The waterproof layer comprises a first water-blocking tape, the shielding layer is a metal braided tape, and the protective layer comprises a foamed PE inner sheath and a PE outer sheath. The composite cable adopts a built-in multiple data cables and cooperates with aramid reinforcement and water-blocking yarn, and has strong data transmission capability, small attenuation, good anti-interference and good waterproof performance, and has It has excellent bending performance, high tensile strength and good compressive performance. The foamed PE inner sheath and PE outer sheath can form a certain buoyancy to reduce the weight of the composite cable in the water. It can sink with the diving operation of the equipment, effectively reducing the impact of the cable on the operation of underwater equipment and ensuring the high efficiency of underwater equipment operation. It has stable high and low temperature performance, salt spray resistance, flame retardant, oil resistance, moisture resistance, rat bite resistance and mildew resistance. The metal braided shielding layer has good bending ability, is easy to install and maintain, and ensures the shielding transmission of different data signals to achieve the effect of non-interference.

[0006] Preferably, the RS485 signal cable, data optical cable and audio cable in the cable core layer are in a circular three-part arrangement structure, there are three aramid reinforcement members, which are spaced apart between the three-part arrangement structure, there are multiple water-blocking yarns, which are spaced apart and filled in the cable core layer, and the RS485 signal cable, data optical cable, audio cable, aramid reinforcement member and water-blocking yarn are arranged in a SZ twisted manner. Multiple non-metallic aramid yarns are used as reinforcement members, which have high tensile strength, and cooperate with the built-in multiple water-blocking yarns and water-blocking tapes to make the cable more waterproof.

[0007] Preferably, the RS485 signal cable comprises a pair of twisted wires respectively coated with a flame-retardant PVC insulation layer and an outer longitudinally wrapped aluminum foil shielding layer, the twisted wires are multiple strands of tinned oxygen-free soft copper wires, and the signal cable is isolated from interference by the twisted structure and the tinning on the cable surface and the aluminum foil shielding layer, which can prevent the escape of electromagnetic signals and external interference, and has excellent data transmission performance and anti-interference ability.

[0008] Preferably, the data optical cable includes a bundle tube and 2-6 core optical fibers placed in the bundle tube. The bundle tube is filled with waterproof grease and adopts multi-core micro-optical fiber communication, so that the composite cable has strong data transmission capability, low attenuation, good anti-interference, and stable high and low temperature performance.

[0009] Preferably, the audio cable comprises a two-core audio wire and a ground wire twisted with each other using a constant tension tape twisting process. The outer wall of the audio cable is provided with a second water-blocking tape and an aluminum foil insulating tape wrapped in a wrapping manner. The aluminum foil insulating tape is located on the outside of the water-blocking tape. The audio wire and the ground wire are both multi-strand tinned oxygen-free soft copper wires covered with a flame-retardant PVC insulation layer. The cable surface is tinned and waterproofed with a water-blocking tape and shielded with aluminum foil. It has high transmission performance, strong anti-interference ability, good shielding and waterproofness.

[0010] Preferably, the metal braided belt is a tinned oxygen-free soft copper wire braided belt, and the composite cable adopts a shielding layer of a soft copper wire braided structure, which can improve the bending performance of the cable, enhance the shielding property, effectively prevent signal interference, and also increase the cable tension to prevent rat bites.

[0011] The beneficial effects of the utility model are as follows: the composite cable adopts built-in multiple data cables and cooperates with aramid reinforcement and water-blocking yarn, which has powerful data transmission capacity, small attenuation, good anti-interference and good waterproof performance, and has excellent bending performance, high tensile strength and good compressive performance. The foamed PE inner sheath and the PE outer sheath cooperate to form a certain buoyancy, reduce the weight of the composite cable in the water, and can sink with the diving operation of the equipment, effectively reduce the influence of the cable on the operation of underwater equipment, and ensure the high efficiency of the operation of underwater equipment. The high and low temperature performance is stable, salt spray resistance, flame retardant, oil resistance, moisture resistance, rat bite resistance, mildew resistance, and UV resistance. The metal braided shielding layer has good bending ability, is easy to install and maintain, and ensures the shielding transmission of different data signals to achieve the effect of non-interference. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a structural schematic diagram of the utility model.

[0013] In the figure, 10. aramid reinforcement, 20. RS485 signal cable, 201. twisted pair, 202. aluminum foil shielding layer, 30. data optical cable, 301. bundle tube, 302. optical fiber, 303. waterproof grease, 40. audio cable, 401. audio cable, 402. ground wire, 403. second water-blocking tape, 404. aluminum foil insulating tape, 50. water-blocking yarn, 60. first water-blocking tape, 70. metal braided tape, 8. foamed PE inner sheath, 9. PE outer sheath. DETAILED DESCRIPTION

[0014] The technical solution of the utility model is further specifically described below through embodiments and in conjunction with the accompanying drawings.

[0015] Embodiment: A composite cable for monitoring underwater robot operation in this embodiment, such as Figure 1 As shown, it includes a cable core layer, a waterproof layer, a shielding layer and a protective layer which are distributed from the inside to the outside in sequence. Three aramid reinforcement members 10, an RS485 signal cable 20, a data optical cable 30, an audio cable 40 and a plurality of water-blocking yarns 50 are designed in the cable core layer. The RS485 signal cable, the data optical cable and the audio cable are arranged in a circular three-partition structure. The three aramid reinforcement members are distributed between the three-partition arrangement structure at intervals. The plurality of water-blocking yarns are filled in the cable core layer at intervals. The RS485 signal cable, the data optical cable, the audio cable, the aramid reinforcement members and the water-blocking yarn are arranged in a fixed manner by SZ twisting. The waterproof layer is a first water-blocking tape 60, the shielding layer is a tinned oxygen-free soft copper wire braided tape 70, and the protective layer includes a 7.0 mm thick foamed PE inner sheath 80 and an 8.0 mm thick PE outer sheath 90, so that the composite cable has a better buoyancy structure.

[0016] The RS485 signal cable includes a pair of 0.75mm thick flame-retardant PVC insulation layers respectively coated with 2.0mm thick 2 The twisted pair wire 201 and the outer longitudinally wrapped aluminum foil shielding layer 202, the twisted pair wire is made of 7*0.37mm multi-strand tinned oxygen-free soft copper wire;

[0017] The data optical cable includes a bundle tube 301 with a diameter of 2.0 mm and a 6-core micro optical fiber 302 placed in the bundle tube, and the inner cavity of the bundle tube is filled with waterproof grease 303;

[0018] The audio cable includes a two-core audio wire 401 and a ground wire 402 twisted with each other using a constant tension tape twisting process. The outer wall of the audio cable is provided with a second water-blocking tape 403 and an aluminum foil insulating tape 404 wrapped in a wrapping manner. The aluminum foil insulating tape is located outside the water-blocking tape. The audio wire and the ground wire are both made of 7*0.16mm multi-strand tinned oxygen-free soft copper wire covered with a 0.9mm thick flame-retardant PVC insulation layer.

[0019] The main technical indicators of the above composite cables are as follows:

[0020] (1)Breaking force: >0.8t

[0021] (2) Working tension: >300kg

[0022] (3) Bending: Additional attenuation ≤ 0.4dB

[0023] (4) Flattening: Additional attenuation ≤ 0.03dB

[0024] (5) Attenuation constant (dB / km): 1310nm≤0.35, 1550nm≤0.22

[0025] (6) Water pressure resistance: ≥10Mpa.

[0026] The composite cable can be used in underwater environments such as oceans and rivers.

[0027] In the description of the present utility model, technical terms such as "upper", "lower", "front", "back", "left", "right", "longitudinal", "horizontal", "inside" and "outside" indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing and understanding the technical scheme of the present utility model. The above description does not limit the present utility model, and the present utility model is not limited to the examples described above. Any changes, modifications, additions or substitutions made by ordinary technicians in this technical field within the essential scope of the present utility model should be deemed to be within the scope of protection of the present utility model.

Claims

1. A composite cable for monitoring underwater robot operations, characterized in that: The invention comprises a cable core layer, a waterproof layer, a shielding layer and a protective layer which are sequentially arranged from the inside to the outside. The cable core layer is provided with an aramid reinforcement member (10), an RS485 signal cable (20), a data optical cable (30), an audio cable (40) and a water-blocking yarn (50). The waterproof layer comprises a first water-blocking tape (60). The shielding layer is a metal braided tape (70). The protective layer comprises a foamed PE inner sheath (80) and a PE outer sheath (90).

2. The underwater robot operation monitoring composite cable according to claim 1, characterized in that: The RS485 signal cable (20), the data optical cable (30) and the audio cable (40) in the cable core layer are arranged in a circular three-partition structure, the aramid reinforcement members (10) are three and are distributed between the three-partition structure at intervals, the water-blocking yarn (50) are multiple and are filled in the cable core layer at intervals, and the RS485 signal cable, the data optical cable, the audio cable, the aramid reinforcement member and the water-blocking yarn are arranged in a fixed manner using an SZ twisting method.

3. The underwater robot operation monitoring composite cable according to claim 1 or 2, characterized in that: The RS485 signal cable (20) comprises a pair of twisted wires (201) each coated with a flame-retardant PVC insulation layer and an outer longitudinally wrapped aluminum foil shielding layer (202), wherein the twisted wires are multiple strands of tinned oxygen-free soft copper wires.

4. The underwater robot operation monitoring composite cable according to claim 1 or 2, characterized in that: The data optical cable (30) comprises a bundle tube (301) and 2-6 core optical fibers (302) placed in the bundle tube, and the bundle tube is filled with waterproof grease (303).

5. The underwater robot operation monitoring composite cable according to claim 1 or 2, characterized in that: The audio cable (40) comprises a two-core audio wire (401) and a ground wire (402) twisted together by a constant tension tape twisting process, the outer wall of the audio cable is provided with a second water-blocking tape (403) and an aluminum foil insulation tape (404) wrapped in a wrapping manner, the aluminum foil insulation tape is located outside the water-blocking tape, and the audio wire and the ground wire are both multiple strands of tinned oxygen-free soft copper wire covered with a flame-retardant PVC insulation layer.

6. The underwater robot operation monitoring composite cable according to claim 1, characterized in that: The metal braided belt (70) is a tinned oxygen-free soft copper wire braided belt.

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