柔软光电综合缆的设计

根据用户的实际使用要求,对水下柔软光电综合缆进行了研制。该缆的结构设计关键在于要在一定的缆径结构尺寸限制下设计出具有较大抗拉能力、抗侧压能力,较高水密性和较佳柔软性,以及可反复收放使用,同时还要保证良好的光电传输性能的柔软光电综合缆。对该柔软光电综合缆的设计、计算及选材进行了详细介绍,以期给该类综合缆的设计提供一定的参考。     

光电复合缆的结构及应用

由于光传输和电能传输属于两种不同类型的传输方式,传输过程中也不会发生相互干扰,而光电复合光缆却能同时解决设备用电及信号传输的问题,因而其应用是比较广泛的。一、光电复合缆的结构光电复合低压电缆(简称光电复合缆)因其功能的多样性,决定了电缆结构的复杂性,但只要有合理的结构设计就可以更好地实现和满足复合缆的功能,并在符合制     

零浮力光电混合缆的研制

介绍了零浮力光电混合缆的功能,从结构设计、密度调节、密度控制和强度设计等方面简述了零浮力光电混合缆的研制。     

耐500℃高温电缆的结构设计

在某工程应用中,需要使用一种耐500℃高温的电缆。该耐高温电缆的主要设计难点是需同时满足高温试验和潮湿试验的要求。为此,对该耐高温电缆的相关结构设计要点进行分析、探讨,并提出可行的设计思路供参考。     

新型接入网用铝合金导体光电混合缆的结构设计

正1应用场合相对接入网用铜导体光电混合缆,新型铝合金导体光电混合缆,不仅解决了铜资源日益匮乏的困境,同时还降低了产品成本。新型铝合金导体光电混合缆可用于室内外接入网,以及远端无人值守的机房、高速公路、铁路沿线、高层办公楼宇、智能电网中。可以预计,伴随着通信网络的快速发展,新型铝合金导体光电混合缆有着广阔的市场前景。2结构设计本公司设计的新型接入网用铝合金导体光电混合缆的结构如图1所示。其中导体采用抗蠕变     

海底光电复合缆的研制

以YJQF41—26／3s-3×120＋2×12B1海底光电复合缆为例,叙述了海底光电复合缆结构设计的要点,指出了海底光电复合缆在制造过程中应注意的问题和一些关键参数。最后给出了该海底光电复合缆的性能要求及测试结果,测试结果表明该海底光电复合缆的各项性能都达到了要求。     

光电混合缆的开发与应用

阐述了一种光电混合缆的设计思路,可以实现在一条路由上为远端基站通信设备提供电源和光纤通信信号,还阐述了对光电混合缆的各种性能的验证结果.通过试验验证和工程验证,证明光电混合境应用在远程供电中是一种成本低、效果好的解决方案.特别是应用在偏远地区的远程供电系统时表现出了良好的稳定性和安全性.     

高清摄像机用光电混合缆的结构设计及工艺要点

本文介绍了一款具有优异性能的高清摄像机用光电混合缆,该缆的性能要求高于国际上通用的美国标准,文章主要介绍了该款混合缆的结构参数和重要工序的生产工艺要点。     

220kV XLPE绝缘海底电(光电复合)缆的结构

正0引言海底电(光电复合)缆主要应用于海底或水底,除了本身要承担电和光的传输外,还必须具有防水、防腐、防蚀、抗拉、抗压等特性。无论是设计和制造,还是运输和施工,海底电(光电复合)缆的难度和复杂度均远高于其它电缆产品,因此海底电(光电复合)缆工程被世界各国公认为是一项难度较高、复杂度较大的工程。目前110kV及以下交联聚乙烯(XLPE)海底电(光电复合)缆在我国已有较多应用,特别是在国     

浅谈移动设备用高强度高压光电复合缆的设计

正0引言目前,国内市场上矿山、港口堆取料机,及港机中移动设备变压器的高压连接大多采用高压电缆和信号通信光缆分别接入的方式,这不仅使得安装敷设极不方便,而且信号通信光缆较低的机械强度国家标准要求,使其在长期承受移动设备的来回扭转、弯曲、拖拉时容易损伤,使用寿命较短,导致移动设备经常停机更换,影响设备正常运行。为了避免以上问题,本公司设计了一种高强度高压光电复合缆。1结构设计     

Submarine optical-fibre cable design considering low elongation under tension

Submarine optical-fibre cable design considering low elongation under tension is proposed. Submarine cable using aluminium pressure resistant pipe according to this design can decrease the cable elongation under laying and recovery, and can be used even in deep sea up to a depth of 5000 m.     

一种舰船发射系统用特种同轴电缆的设计探讨

本文主要探讨一种舰船发射系统用同轴电缆的设计,根据用户实际使用的特殊情况,设计出大拉力、反复收放、低损耗、重量轻的特种铠装同轴电缆.在该电缆的设计过程中,不仅要考虑电缆的传输性能,还要考虑到使用空间非常小以及应用中处于反复收放状态,在8mm的直径内满足1000kg的拉力和反复收放的要求电缆设计是否可以成功的关键.     

ADSS光缆电腐蚀问题的浅析

近年来ADSS光缆已成为110 kV及以下电力通信的首选光通信传输介质。ADSS光缆具有绝缘良好,抗拉强度高,可与电力线同杆塔架设等优点,但存在着易电腐蚀等缺陷。对ADSS光缆产生电腐蚀的原因和控制方法作了详细的阐述,并通过一个ADSS光缆电腐蚀案例的分析,讨论了ADSS光缆产生电腐蚀的必要条件和预防方法,证明了ADSS光缆的电腐蚀在110 kV及以下的电压等级上是可以控制的,ADSS光缆是可以安全运行的。     

Development of optical fiber/power line composite tether cable for remotely operated unmanned submersible

A new type of tether cable with high quality signal transmission characteristics was developed by adopting optical fibers. As the tether cable is subject to frequent and various mechanical and thermal loads under the severe operating conditions in the offshore environment, the greatest care should be paid to the design of its structure to preserve the optical fibers from those loads. This paper describes the design requirements and the characteristics of the optical fiber/power line composite tether cable under the loads such as tensile loading, bending, twisting, water pressure, and cable heating. The termination of the tether cable is also discussed. This tether cable has been in practical use for remotely operated submersible MARCAS whose mission is inspection and location of the submarine telecommunication cables.     

Hybrid S-Parameters for Transmission Line Networks With Linear/Nonlinear Load Terminations Subject to Arbitrary Excitations

We propose a generalized S-parameter analysis for transmission lines (TLs) with linear/nonlinear load terminations subject to arbitrary plane-wave and port excitations. S-parameters are prevalently used to model TLs such as cable bundles and interconnects on printed circuit boards (PCBs) subject to port excitations. The conventional S-parameter approach is well suited to characterize interactions among ports. However, nontraditional port excitations associated with plane-wave coupling to physical ports at TL terminals lead to forced, as well as propagating, modal waves, necessitating a modification of the standard S-parameter characterization. In this paper, we consider external plane-wave excitations, as well as port (internal) sources, and propose a hybrid S-parameter matrix for characterization of the associated microwave network and systems. A key aspect of the approach is to treat the forced waves at the ports as constant voltage sources and induced propagating modal waves as additional entries (hybrid S-parameters) in the S-parameter matrix. The resulting hybrid S-matrix and voltage sources can be subsequently exported to any circuit solver such as HSPICE and Agilent's Advanced Design System for the analysis of combined linear and nonlinear circuit terminations at ports. The proposed method is particularly suited for susceptibility analysis of cable bundles and PCBs for electromagnetic interference evaluations. It also exploits numerical techniques for structural and circuit domain characterization and allows for circuit design optimization without a need to perform any further computational electromagnetic analysis     

Applications of analog and hybrid computation in electric power system analysis

A historical development of mechanical and electronic differential analyzers as well as the significant developments in simulation techniques are discussed. Present-day application of modern analog and hybrid computers to electric power systems are presented. Included are the simulation of electric machines, static converter drives, transmission lines, and dc power systems. Special-purpose analog and hybrid computers are also discussed briefly. The material presented in this paper should enable an informed evaluation of the capabilities of analog and hybrid computers in the analysis of power system problems.     

Design and implementation of a cable-driven parallel robot for additive manufacturing applications

This paper presents a new 6 degree-of-freedom cable-driven parallel robot fully constrained by 8 cables. This robot should perform medium size 3D part printing. Its distinguishing feature is a radial cable winding that is relevant due to the small cable diameter (0.54 mm) and the maximum cable length (1.732 m, 1 m cube diagonal). This winding solution has the advantage of being compact and easy to design. The robot trajectory planning uses a full geometric model of the pulley and winding system which is introduced in this paper. The cable elasticity is taken into account in the geometric model to increase the tool path following accuracy. Robot dynamic performances are analyzed for two different mobile platform geometries. From this analysis, we obtained an end-effector trajectory tracking error of less than 0.4 mm for a feedrate speed of 0.1 m/s.     

Design of Deep-Sea Submarine Optical Fiber Cable

On designing optical fiber cable, it is necessary to deal with optical fiber weakness, such as small breaking elongation compared to metal materials and excess loss under both lateral and hydraulic pressure. This paper presents a structural design method for the submarine optical fiber unit and cable based on the study of both lateral and hydraulic pressure characteristics. This paper also clarifies that the fiber proof test level has been determined for new cables to be applied in sea areas 8000 m in depth.     

移动式电子系统总体设计与电气布局

介绍了电子设备方舱基本总体设计流程及其相关的基本原则．论述了电气总体设计与电源选择、电磁兼容以及电缆布线设计、布线施工一致性的关系．提出了电子设备方舱总体设计的基本方法，并举例说明通过电缆布线设计解决电磁兼容问题的方法．