Heavy cable and zero float cable mixed type photoelectric composite tow

A photoelectric composite, zero buoyancy technology, applied in the direction of cables, circuits, electrical components, etc., can solve the problems of difficult retraction, complex structure, low reliability, etc. The effect of convenient cable retraction

Inactive Publication Date: 2007-07-18
INST OF ACOUSTICS CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] The object of the present invention is to overcome the defects of high cost, complex structure, low reliability and difficult retraction of the existing heavy cable and zero buoyancy cable mixed towing cable; length = the length of the heavy cable + the length of the transition section + the length of the zero-buoyancy cable), foaming material is added o

Method used

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  • Heavy cable and zero float cable mixed type photoelectric composite tow
  • Heavy cable and zero float cable mixed type photoelectric composite tow

Examples

Experimental program
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Embodiment 1

[0034] Referring to Figure 1, two sets of load-bearing cables with cable lengths of 700 meters and 800 meters were ordered from abroad. The bending radius of the cables is 0.4 meters and the breaking force is 15 tons. The load-bearing cable of the present embodiment is divided into 3 sections, heavy cable section 9, zero buoyancy section 8 and transition section 10 (as shown in Figure 1 and Figure 2), the length of heavy cable section 9 is 700 meters, and zero buoyancy section 8 The length is 800 meters. The Kevlar tensile layer 4 of the load-bearing cable has a multimode optical fiber 2, a shielded power cord 3, and a shielded twisted pair 7, and is filled with oil as a water-blocking material 5 to form a whole. One end of the load-bearing cable is used as the heavy cable section 9, and then the polyurethane sheath 1 is covered outside the other two sections, and then a layer of foam sheath 6 is placed on the polyurethane sheath 1 to form a zero-buoyancy cable 8 The zero-buo...

Embodiment 2

[0036] The structure of this embodiment is the same as that of Embodiment 1, except that on the basis of Embodiment 1, a layer of non-foamed polyethylene film is added outside the foam sheath 6, because the composition of this gravity and buoyancy hybrid cable The cable method has certain requirements on the friction resistance of the buoyancy material, because the surface of the buoyancy foam material is generally rough, and it will inevitably increase the resistance of the towline when it is dragged underwater. The thin-film method can make the towline more beautiful and can reduce the fluid resistance of the towline when it is towed obliquely. Since the zero-buoyancy towline is generally horizontal when working underwater, the buoyancy material may not be provided with a protective film, and the water flow resistance will not be increased much.

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Abstract

A photoelectric composite tow of heavy cable and zero-buoyancy cable mixed type is prepared as forming heavy cable by heavy cable section and transition section as well as zero-buoyancy section, setting heavy cable section at one end of heavy cable and zero-buoyancy section at the other end of heavy cable, covering a polyimine resin protection sheath on tensile outer layer of heavy cable, preparing zero-buoyancy cable section on said sheath, setting said transition section between two said sections for making foamed protection sheath there be from thick to thin to form transition section of tow.

Description

technical field [0001] The invention relates to a tow cable of an underwater tow system, in particular to a hybrid photoelectric composite tow cable of a heavy cable and a zero-buoyancy cable Background technique [0002] In the field of marine exploration, some underwater vehicles need to be towed by mother ships with tow cables. In order to ensure a stable movement attitude of the underwater vehicle, the underwater vehicle often adopts a zero-buoyancy towing method. The underwater vehicle is zero-buoyancy, and a section of the tow cable is also required to be zero-buoyancy. The size of the zero-buoyancy cable is often larger than that of the heavy cable. If all the towlines are made of zero-buoyancy cables, the fluid resistance will increase, making it difficult for the towed body to dive to the specified depth. Therefore, when designing the tow cable of the underwater towed system, it is often required that one section of the tow cable is a zero-buoyancy cable, while the...

Claims

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Application Information

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IPC IPC(8): H01B11/22H01B7/17H01B3/44
Inventor 黄勇张春华刘纪元孙宝申
Owner INST OF ACOUSTICS CHINESE ACAD OF SCI
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