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公开(公告)号：US5230034A
公开(公告)日：1993-07-20
申请号：US763410
申请日：1991-09-20
IPC分类号： G02B6/44
CPC分类号： G02B6/4432 , G02B6/4419 , G02B6/4422 , G02B6/4494
摘要： An all dielectric self-supporting fiber optic communication cable for use between spaced-apart support towers of an electrical power transmission network. A central core including at least one optical fiber is surrounded by a layer of non-conductive stranded strength members that are wound about the core. The core includes a plurality of pliable buffer tubes, each of which houses a bundle of optical fibers. The buffer tubes are helically wound about a cylindrical element in order to provide temperature performance by preventing the buffer tubes from experiencing thermally induced movement when exposed to varying temperatures. Each of the stranded strength members comprises a bundle of non-conducting filaments or fibers that are encapsulated by individual polyethylene jackets. The stranded strength members are helically wound about the central core. An outer protective jacket is formed about the stranded strength members and encloses the entire cable.
摘要翻译： 一种用于电力传输网络的间隔支撑塔之间的全电介质自支撑光纤通信电缆。 包括至少一个光纤的中心芯被围绕芯缠绕的一层非导电绞合强度构件包围。 芯部包括多个柔韧的缓冲管，每个缓冲管容纳一束光纤。 缓冲管围绕圆柱形元件螺旋缠绕，以便通过防止缓冲管在暴露于不同温度时经历热诱导运动来提供温度性能。 每个绞合的强度构件包括由单个聚乙烯护套包封的一束不导电细丝或纤维。 绞合强度构件围绕中心芯螺旋缠绕。 围绕绞合的强度构件形成外部保护套，并且包围整个电缆。
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公开(公告)号：US5195158A
公开(公告)日：1993-03-16
申请号：US649612
申请日：1991-02-06
CPC分类号： G02B6/443 , G02B6/4407 , G02B6/4422 , H01B5/108
摘要： A fiber optic groundwire or static cable for use between spaced-apart support towers of an electrical power transmission network, for ground fault protection from lightning strikes and other electrical faults, with an integral fiber optic telecommunications bundle. A bundle of optical fibers tightly enclosed by a pliable thremally insulating strain jacket is firmly affixed into a helically-wound channel within an electrically conductive core. At least one layer of stranded electrical conductors serving as strength members completely surrounds the core. The tight jacketing of the optical fibers by a pliable strain jacket, combined with the firm mounting of the strain jacket within the helical channel of the core, reduces the axial tensional forces on the optical fibers that occur during and after installation of the cable. Also, the cable provides improved fault current carrying capability by utilizing a strain jacket made from a high temperature and thermally insulating silicone-based or ethylene propylene-based material. Because the fiber optic bundles are tight buffered in the strain jacket and the strain jacket is tightly affixed in the channels of the core rather than in loose in the strain jacket, the cable accommodates more optical fibers per unit area of channel than prior art "loose tube" construction, which allow the fibers to move relative to one another and relative to the cable core.
摘要翻译： 一种光纤接地线或静电电缆，用于电力传输网络的间隔支撑塔之间，用于接地故障保护以防雷击和其他电气故障，以及整体光纤通信束。 由柔韧的绝缘应变夹套紧密封闭的一束光纤牢固地固定在导电芯内的螺旋缠绕通道中。 用作强度构件的至少一层绞合电导体完全围绕芯。 通过柔韧的应变夹套紧密地夹紧光纤，结合将应变套牢固地安装在芯的螺旋通道内，减少了在电缆安装期间和之后出现的光纤上的轴向张力。 此外，电缆通过利用由高温和绝热的硅酮或基于乙烯丙烯的材料制成的应变套，提供了改进的故障电流承载能力。 由于光纤束在应变夹套中紧密缓冲，应变夹紧紧地固定在芯的通道中，而不是在应变夹套中松动，所以电缆容纳每个单位面积通道的光纤比现有技术“松散 管“结构，其允许纤维相对于彼此和相对于电缆芯移动。
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公开(公告)号：US5325457A
公开(公告)日：1994-06-28
申请号：US862934
申请日：1992-04-03
IPC分类号： G02B6/44
CPC分类号： G02B6/4419 , G02B6/4422 , G02B6/4432 , G02B6/4494
摘要： An all dielectric self-supporting fiber optic communication cable for use between spaced-apart support towers of an electrical power transmission network. A central core including at least one optical fiber is surrounded by a layer of non-conductive stranded strength members that are wound about the core. The core includes a plurality of pliable buffer tubes, each of which houses a bundle of optical fibers. The buffer tubes are helically wound about a cylindrical element in order to provide temperature performance by preventing the buffer tubes from experiencing thermally induced movement when exposed to varying temperatures. Each of the stranded strength members comprises a bundle of non-conducting filaments or fibers that are formed about a reinforcing element and encapsulated by individual polyethylene jackets. The reinforcing element reduces the tendency of the filaments to compress as the extruded jacket cures. The stranded strength members are helically wound about the central core. An outer protective jacket is formed about the stranded strength members and encloses the entire cable. A faraday shield formed along the outer jacket brings the electric field to zero in the vicinity of the outer jacket, thus reducing or eliminating tracking currents along the surface of the outer jacket.
摘要翻译： 一种用于电力传输网络的间隔支撑塔之间的全电介质自支撑光纤通信电缆。 包括至少一个光纤的中心芯被围绕芯缠绕的一层非导电绞合强度构件包围。 芯部包括多个柔韧的缓冲管，每个缓冲管容纳一束光纤。 缓冲管围绕圆柱形元件螺旋缠绕，以便通过防止缓冲管在暴露于不同温度时经历热诱导运动来提供温度性能。 每个绞合的强度构件包括一束不导电的细丝或纤维，其围绕加强元件形成并由单独的聚乙烯护套包封。 当挤出的夹套固化时，增强元件减少长丝压缩的趋势。 绞合强度构件围绕中心芯螺旋缠绕。 围绕绞合的强度构件形成外部保护套，并且包围整个电缆。 沿着外护套形成的法拉第屏蔽使得外护套附近的电场为零，从而减少或消除沿着外护套表面的跟踪电流。
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公开(公告)号：US5274725A
公开(公告)日：1993-12-28
申请号：US029778
申请日：1993-03-11
CPC分类号： G02B6/4407 , G02B6/4422 , G02B6/443 , H01B5/108
摘要： A fiber optic groundwire or static cable for use between spaced-apart support towers of an electrical power transmission network, for ground fault protection from lightning strikes and other electrical faults, with an integral fiber optic telecommunications bundle. A bundle of optical fibers tightly enclosed by a pliable thermally insulating strain jacket is firmly affixed into a helically-wound channel within an electrically conductive core. At least one layer of stranded electrical conductors serving as strength members completely surrounds the core. The tight jacketing of the optical fibers by a pliable strain jacket, combined with the firm mounting of the strain jacket within the helical channel of the core, reduces the axial tensional forces on the optical fibers that occur during and after installation of the cable. Also, the cable provides improved fault current carrying capability by utilizing a strain jacket made from a high temperature and thermally insulating silicone-based or ethylene propylene-based material. In another embodiment, the wire includes at least one fiber optic subunit firmly affixed into a helically-wound channel within an electrically conductive core of the cable. The fiber optic subunit comprises a plurality of optical fibers wound about a fiberglass central strength member having an overcoating layer of a pliable semicompressible material, and tightly enclosed by a pliable thermally insulating strain jacket.
摘要翻译： 一种光纤接地线或静电电缆，用于电力传输网络的间隔支撑塔之间，用于接地故障保护以防雷击和其他电气故障，以及整体光纤通信束。 由柔韧的绝热应变套密封的一束光纤被牢固地固定在导电芯内的螺旋缠绕通道中。 用作强度构件的至少一层绞合电导体完全围绕芯。 通过柔韧的应变夹套紧密地夹紧光纤，结合将应变套牢固地安装在芯的螺旋通道内，减少了在电缆安装期间和之后出现的光纤上的轴向张力。 此外，电缆通过利用由高温和绝热的硅酮或基于乙烯丙烯的材料制成的应变套，提供了改进的故障电流承载能力。 在另一个实施例中，导线包括牢固地固定到电缆的导电芯内的螺旋缠绕通道中的至少一个光纤子单元。 光纤子单元包括缠绕在玻璃纤维中央强度构件上的多个光纤，该玻璃纤维中心强度构件具有柔韧的半可压缩材料的外涂层，并由柔韧的绝热应变夹紧紧密封。
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公开(公告)号：US5495546A
公开(公告)日：1996-02-27
申请号：US227251
申请日：1994-04-13
IPC分类号： G02B6/44
CPC分类号： G02B6/4422 , G02B6/4407 , G02B6/4416 , G02B6/4494
摘要： The present invention is directed toward an optic static wire assembly comprising a central core which has one or more helical channels in its periphery. One or more tubes containing a dielectric water-blocking compound and one or more optical fibers are positioned in the channels. The tubes are coated with a thermal insulation material, and then a heat reflective material. The optical fibers are randomly arranged within the tubes in such a way that tensile stresses on the cable are not transmitted to them. Finally, the assembly formed by the core and the tube or tubes is wrapped with a serving of metal wires. In one embodiment, the core and tubes may be wrapped with a tape layer before the outer metal wires are applied. Any interstices among the core, the tube or tubes, and tape may also be filled with another dielectric water-blocking compound.
摘要翻译： 本发明涉及一种光学静电丝组件，其包括在其周边具有一个或多个螺旋通道的中心芯。 包含介电阻水化合物和一种或多种光纤的一个或多个管被定位在通道中。 管子涂有绝热材料，然后是热反射材料。 光纤随机地布置在管内，使得电缆上的拉伸应力不被传递给它们。 最后，由芯部和管子形成的组件用一系列金属线包裹。 在一个实施例中，在施加外部金属丝之前，芯和管可以用带层包裹。 核心，管或管和带之间的任何间隙也可以用另一种介电阻水化合物填充。
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公开(公告)号：US5204926A
公开(公告)日：1993-04-20
申请号：US826893
申请日：1992-01-28
CPC分类号： G02B6/4422 , G02B6/4407 , G02B6/443 , H01B5/108
摘要： A fiber optic groundwire or static cable for use between spaced-apart support towers of an electric power transmission network, for ground fault protection from lightning strikes and other electrical faults, with an integral fiber optic telecommunications bundle. A bundle of optical fibers tightly enclosed by a pliable thermally insulating strain jacket is firmly affixed into a helically-wound channel within an electrically conductive core. At least one layer of stranded electrical conductors serving as strength members completely surrounds the core. The tight jacketing of the optical fibers by a pliable strain jacket, combined with the firm mounting of the strain jacket within the helical channel of the core, reduces the axial tensional forces on the optical fibers that occur during and after installation of the cable. Also, the cable provides improved fault current carrying capability by utilizing a strain jacket made from a high temperature and thermally insulating silicone-based or ethylene propylene-based material. In another embodiment, the wire includes at least one fiber optic subunit firmly affixed into a helically-wound channel within an electrically conductive core of the cable. The fiber optic subunit comprises a plurality of optical fibers wound about a fiberglass central strength member having an overcoating layer of a pliable semicompressible material, and tightly enclosed by a pliable thermally insulating strain jacket.
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公开(公告)号：US06520290B1
公开(公告)日：2003-02-18
申请号：US09550927
申请日：2000-04-17
申请人： Charles L. Carter
发明人： Charles L. Carter
IPC分类号： A62B3500
CPC分类号： E04G5/00 , A62B35/0037 , A62B35/0062 , A62B35/0081 , E04G5/001
摘要： A personal fall protection system for securing a worker to an elevated and exposed structure defining a work area is disclosed. The fall protection system includes a safety belt supported on the worker's body with a body harness. The safety belt includes two belt couplings movable in a channel around the belt, each adapted to be attached to a lanyard. Two spaced apart rails are mounted adjacent opposite side limits of the structure. A movable anchor for securing the end of a lanyard is mounted to each rail. A lanyard ties off the worker at each belt coupling to an anchor. The fall protection system thereby secures the worker to both sides of the structure while allowing the worker to rotate relative to the lanyards within the work area and move freely forward and backwards throughout the work area between the rails.
摘要翻译： 公开了一种用于将工人固定到限定工作区域的升高和暴露结构的个人防坠落系统。 防坠落系统包括一个安全带，该安全带支撑在工作人员的身上，并配有身体线束。 安全带包括两个皮带联接器，可在皮带周围的通道中移动，每个皮带联接器适于连接到挂绳上。 两个间隔开的导轨安装在结构的相反侧限。 用于固定挂绳端部的活动锚固件安装在每个导轨上。 每个腰带上的一根挂绳将锚绳绑在一起。 因此，坠落保护系统将工人固定在结构的两侧，同时允许工人相对于工作区域中的系索旋转，并且在轨道之间的整个工作区域中自由地向前和向后移动。
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