The invention discloses a high-voltage low impedance coaxial cable, comprising a central water pipe, a center conductor, insulation, outer conductor from the inside to the outside, the polyurethane outer sheath, which is characterized in that the central pipe is a hollow structure, braided or wrapped around the center conductor in the water pipe, and between insulation and in order to increase the outer conductor of the high-voltage insulating paper, rubber insulating tape, polyurethane sheath; the center conductor insulation outside wrapping multilayer high-voltage insulation paper in high-voltage insulation paper wrapped in multilayer rubber insulating tape, rubber insulating tape of extruded polyurethane outer sheath, sheath in polyurethane inside and outside then braided or wrapped outer conductor extruded polyurethane sheath in the outer conductor outside. The invention has low wave impedance and high voltage resistance characteristics, the pulse voltage resistance value is not less than 50KV, the wave impedance is less than 10 ohm, and the outer diameter of the cable is small, which can effectively guarantee the flexibility and portability of the cable.
【技术实现步骤摘要】
本专利技术涉及一种同轴电缆,特别涉及一种低波阻抗、耐高电压同轴水电缆。
技术介绍
同轴电缆的定义是,先由两根同轴心、相互绝缘的圆柱形金属导体构成基本单元 (同轴对),再由单个或多个同轴对组成的电缆。同轴电缆是由中心导体、绝缘材料层、网状 织物构成的屏蔽层(外层导体)以及外部隔离材料层组成。同轴电缆可以分为高频同轴电缆和高压同轴电缆等类型。高频同轴电缆主要应用 于宽带网络、无线通讯等领域,可以传输微波频带并具有低损耗和噪声屏蔽的特性;高压同 轴电缆主要用于电力传输等领域,耐压幅值一般可达20 50KV。脉冲等离子体钻机是利用重复性高压强流脉冲等离子体,快速高效地粉碎岩石, 实现对地层或岩石进行快速钻井的设备。高压短脉冲的长距离低损耗传输电缆和钻井液的 循环装置是该设备的重要组成部分。已有高压同轴电缆的波阻抗一般为50欧姆、75欧姆,或者更高,这些种类的电缆 不适合应用于高压等离子体放电装置,这是由于高压等离子体放电装置的等效负载阻抗很 小,一般低于10欧姆。因此,在高压等离子体放电装置中,应用高波阻抗的同轴电缆将导致 很高的传输损耗,能量传输效率很低。此外,脉冲 ...
【技术保护点】
一种高压低波阻抗同轴水电缆,由内到外依次包括中央通水管、中心导体、绝缘皮、外层导体、聚氨酯外护套,其特征是中央通水管为中空结构,在通水管之外编织或缠包中心导体,并在绝缘皮和外层导体之间依次增加了耐高压绝缘纸、橡胶绝缘带、聚氨酯内护套;所述中心导体的绝缘皮外面绕包多层耐高压绝缘纸,在耐高压绝缘纸外绕包多层橡胶绝缘带,在橡胶绝缘带之外层挤包聚氨酯内护套,在聚氨酯内护套外再编织或缠包外层导体,在外层导体之外挤包聚氨酯外护套。
【技术特征摘要】
【专利技术属性】
技术研发人员:裴彦良,刘保华,纪念迎,闫克平,张德玉,章志成,
申请(专利权)人:国家海洋局第一海洋研究所,浙江大学,山东拓普液压气动有限公司,
类型:发明
国别省市:95