轻量化脐带缆设计（特邀）

牛学超; 陆建佳; 陈紫薇; 谢书鸿; 顾春飞; 孙杰; 陈珍珍; 冒兵

doi:10.13756/j.gtxyj.2025.250100

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轻量化脐带缆设计（特邀）

专题：海洋通信与传感网络 | 更新时间：2025-08-16

- 轻量化脐带缆设计（特邀）
- Light-weight Umbilical Cable Design
- 光通信研究 2025年第4期
- 作者机构：
  
  1.中天科技海缆股份有限公司，江苏　南通　226010
  2.浙江中天海工线缆有限公司，浙江　温州　325026
- 作者简介：
  
  牛学超，工程师。E-mail：niuxc@ztt.cn
- 基金信息：
  
  国家重点研发计划资助项目(2022YFC2805902)
- DOI：10.13756/j.gtxyj.2025.250100
  中图分类号： TM722
- 收稿日期：2025-03-19，
  
  修回日期：2025-05-16，
  
  纸质出版日期：2025-08-10
- 稿件说明：
移动端阅览
牛学超，陆建佳，陈紫薇，等. 轻量化脐带缆设计[J]. 光通信研究，2025(4): 250100.

Niu X C, Lu J J, Chen Z W, et al. Light - weight Umbilical Cable Design[J]. Study on Optical Communications, 2025(4): 250100.
牛学超，陆建佳，陈紫薇，等. 轻量化脐带缆设计[J]. 光通信研究，2025(4): 250100. DOI： 10.13756/j.gtxyj.2025.250100.

Niu X C, Lu J J, Chen Z W, et al. Light - weight Umbilical Cable Design[J]. Study on Optical Communications, 2025(4): 250100. DOI： 10.13756/j.gtxyj.2025.250100.

摘要

【目的】

脐带缆是海洋科学考察的核心装备之一，通常采用高强度钢丝作为承力单元，然而钢丝密度较高，随着应用水深增加，脐带缆自重占据安全工作载荷的比例增大，超深水应用安全载荷裕度减少。因此需要进行脐带缆轻量化设计。

【方法】

轻量化脐带缆采用低密度、高硬度的芳纶纤维复合材料（FRP）在其最内层全部取代钢丝，在中间层间隔取代钢丝，最外层保持全钢丝结构来提升整体耐磨性能且有利于海水浸入承力层间隙散热。为了减缓层间磨损，在FRP表面挤塑耐磨层，增加长期使用的耐疲劳性能。

【结果】

首先，与钢丝脐带缆相比，轻量化脐带缆在空气中单位重量减少30.50%，海水中单位重量减少37.29%，静态使用水深提升27.6%，拓展了脐带缆的应用场景。其次，采用有限元方法对轻量化脐带缆和钢丝脐带缆的刚度、拉伸和散热性能等进行分析对比，发现轻量化脐带缆的拉伸刚度降低了16.7%，弯曲刚度降低了20.0%；两种缆均能达到理论断裂拉伸载荷，两种材料应力均小于断裂强度，此时缆的延伸率均为1.45%；在同等电流的海水环境中，轻量化脐带缆缆芯温度高0.7 ℃，相较于钢丝脐带缆增加了2.9%。最后，完成样缆制造，基于常见失效模式进行断裂拉伸测试、交变载荷疲劳测试和张力弯曲疲劳测试，测试结果证实，经历2 000次疲劳后，轻量化脐带缆仍具有较高的强度，并且层间磨损较为轻微。

【结论】

在外径不变的前提下，轻量化脐带缆可以较大幅度地提升应用水深，两种不同特性的承力材料可以同时发挥最大的拉伸性能，经过测试证实轻量化脐带缆具有较高的可靠性。

Abstract

【Objective】

The umbilical cable is one of the core pieces of equipment for marine scientific exploration. It typically uses high-strength steel wires as the load-bearing elements. However

steel wires have a high density

and as the operating water depth increases

the proportion of the umbilical cable's own weight in the safe working load also increases

reducing the safety margin for ultra-deep water applications. Therefore

there is a need for lightweight design of umbilical cables.

【Methods】

The light-weight umbilical cable replaces steel wires entirely with low-density

high-hardness aramid Fiber Reinforced Polymer Compsite Materials (FRP) in its innermost layer. In the middle layer

steel wires are partially replaced at intervals

while the outermost layer maintains a full steel wire structure to enhance overall wear resistance and facilitate heat dissipation through the gaps in the loadbearing layer when seawater seeps in. To mitigate interlayer wear

a wear-resistant layer is extruded on the surface of the FRP

thereby increasing its fatigue resistance for long-term use.

【Results】

Firstly

compared with steel wire umbilical cables

light-weight umbilical cables reduce the unit weight by 30.50% in air and 37.29% in seawater

and increase the static water depth by 27.6%

expanding the application scenarios of umbilical cables. Secondly

the finite element method is used to analyze and compare the stiffness

tensile strength

and heat dissipation performance of lightweight umbilical cables and steel wire umbilical cables. It is found that the tensile stiffness of lightweight umbilical cables is 16.7% lower and the bending stiffness is 20.0% lower. Both types of cables can reach the theoretical fracture tensile load

and the stress of both materials is less than the fracture strength. At this time

the elongation of the cables is 1.45%. Under the same current in seawater

the temperature of the light-weight umbilical cable core is 0.7 ℃ higher

which is 2.9% higher than the steel wire umbilical cable. Finally

the prototype cable was manufactured and subjected to tensile tests based on common failure modes

as well as tests for fatigue under alternating loads and tension-bending fatigue. The test results confirm that after 2 000 cycles of fatigue

the lightweight umbilical cable still has high strength and minimal interlayer wear.

【Conclusion】

Under the premise of unchanged outer diameter

lightweight umbilical cables can significantly increase the application water depth. Two different load-bearing materials with different characteristics can simultaneously exert maximum tensile performance. Through testing

it has been verified that the lightweight umbilical cables have high reliability.

关键词

Keywords

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