A dynamically adjustable multi-core optical fiber composite self-suspending cable

A multi-core optical fiber and dynamic adjustment technology, which is applied in the field of underwater cables, can solve the problems of inconvenient depth adjustment of underwater construction equipment, and achieve the effects of good insulation, high strength, and convenient use

Active Publication Date: 2021-08-17
浙江万马股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although it can overcome its own weight and float on the water surface, it is not suitable for equipment that requires underwater construction, and cannot solve the problem of inconvenient depth adjustment of underwater construction equipment

Method used

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  • A dynamically adjustable multi-core optical fiber composite self-suspending cable
  • A dynamically adjustable multi-core optical fiber composite self-suspending cable
  • A dynamically adjustable multi-core optical fiber composite self-suspending cable

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] A dynamically adjustable multi-core optical fiber composite self-suspending cable, such as figure 1 , figure 2 As shown, the present embodiment includes several conductive cores coated with an insulating layer 2, and several conductive cores are coated and filled with tensile load-bearing elements 3 to form a main core, and the tensile load-bearing elements 3 in the main core are also arranged with The optical unit 4 and the control cable 11, the main core is coated with double-sided water-blocking tape 5 in turn, and the double-sided water-blocking tape 5 is longitudinally wrapped with aluminum-plastic composite tape 6 and extruded into a medium-density polyethylene waterproof sleeve 7, medium-density polyethylene Several elastic air tubes 8 are distributed along the circumference of the waterproof cover 7. Several elastic air tubes 8 are covered by an elastic outer sheath 10. One end of several elastic air tubes 8 is closed, and the other end is connected with the ai...

Embodiment 2

[0026] A dynamically adjustable multi-core optical fiber composite self-suspension cable. On the basis of the first embodiment, the structure of the elastic air tube 8 is further improved in this embodiment, which improves the adaptability of the composite self-suspension to large-span water depths. . Such as image 3 , Figure 4 As shown, in this embodiment, the elastic air tube 8 is provided with ribs 12, and the two ends of the ribs 12 are bonded to the inner wall of the elastic air tube 8, and the elastic air tube 8 and the medium density polyethylene waterproof sleeve 7 are in contact with the medium density polyethylene The waterproof cover 7 is bonded, and the rib 12 has an included angle with the radial direction of the main core when the elastic air tube 8 is filled with air. Between the elastic air tubes 8 are provided solid rubber rods 13, one end of the solid rubber rods 13 is bonded to the medium density polyethylene waterproof cover 7, and the other end is in c...

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Abstract

The invention relates to the technical field of underwater cables, in particular to a dynamically adjustable multi-core optical fiber composite self-suspending cable, which includes several conductive cores coated with an insulating layer, and the external conductive cores are formed by coating and filling with tensile bearing elements The main core, the tensile and bearing elements in the main core are also equipped with optical units and control cables, the main core is covered with double-sided water blocking tape in turn, and the double-sided water blocking tape is longitudinally wrapped with aluminum-plastic composite tape and extruded into medium density Polyethylene waterproof jacket, several elastic air tubes are distributed along the circumference of the medium-density polyethylene waterproof jacket, and several elastic air tubes are covered by an elastic outer sheath. One end of several elastic air tubes is closed, and the other end is connected to the air pump through a solenoid valve. . The substantive effect of the invention is that the elastic air tube can be filled with air and sucked out of air at will, thereby dynamically adjusting the buoyancy of the cable at any time, and connecting cables for power transmission, signal transmission or signal control between underwater operation equipment, which is convenient to use.

Description

technical field [0001] The invention relates to the technical field of underwater cables, in particular to a dynamically adjustable multi-core optical fiber composite self-suspending cable. Background technique [0002] Due to market demand, customers need a power transmission cable that can be suspended on the water surface or in water. The power transmission voltage is generally 220V or 380V. Due to the heavy weight of the cable, ordinary cables sink in water, which is difficult for construction and water. The use of suspension equipment and underwater brings inconvenience, especially in waters with large water depths. The underwater situation is complicated, which increases the cost and danger of construction or temporary operations. General floating cables are now used in insulating foam materials. In the cable insulation, the buoyancy of the cable in the water is greater than its own weight, which avoids the sinking of the cable, but the buoyancy cannot be adjusted at w...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01B7/12H01B7/17H01B7/18H01B7/282H01B9/00H01B11/22H01B7/285
CPCH01B7/12H01B7/17H01B7/18H01B7/2825H01B7/285H01B9/005H01B11/22
Inventor 李金堂刘焕新王玲红叶金龙黄金坊
Owner 浙江万马股份有限公司
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