伞裙

伞裙由一圈丝质公爵夫人缎和一小段裙裾组成。

The full skirt was framed by a band of silk duchess satin and a subtle train .

本实用新型一种伞裙为阶梯形的绝缘子，涉及高电压绝缘子领域。

The utility model provides an insulator with a step-shaped umbrella skirt , relating to the field of high-voltage insulator .

研发阶段的合成外绝缘设备由于其机械强度以及伞裙外形生产受限，仅能适应I级污区，但合成穿墙套管能适应II级污区的户外要求。

Because of low mechanical strength and limited production of shed , composite external insulation devices , which are under development , can only be used in class I contamination areas . However , composite wall bushings meet class II outdoor requirements .

目前国内500kV双回换位塔的电气模型存在不利于复合绝缘子防上下伞裙的冰桥短接和防雷性能不足等缺点。

Current electric models of phase-change towers used in 500 kV double-circuit transmission line have disadvantages , such as ice-induced composite insulator skirt short circuit and weak lightning protection .

通过对河北省南部电网2001年2月大面积污闪事故的分析，肯定了合成绝缘子、RTV涂料、硅橡胶伞裙的防污闪效果。

Through analyzing large area pollution flashover in February , 2001 in Hebei Southern power grid , composite insulators , RTV coating , and silicone rubber umbrella petticoats are defined as effective measures for preventing insulators from flashover .

吊装时应防止硅橡胶伞裙受损。

Pay attention to the silicon rubber umbrellas when the products are suspended .

加装超大伞裙的复合绝缘子的应用研究

Study of Application of Adding Extra Large Shed to Top of Composite Insulators

特高压交流复合绝缘子伞裙结构的优化设计分域迭代法计算特高压线路绝缘子电场分布

Calculation of Complex Electric Field Along Insulators of UHV Transmission Lines with Domain-decomposition and Iterative Method

输电线路绝缘闪络故障判别技术&故障点指示伞裙的研制

Fault Identification Technology for Insulation Flash on Power Transmission Line ── Research on Umbrella Indicating Fault Point

本文提出了在空气中对伞裙护套与芯棒粘接界面进行超声无损探伤的新方法。

This paper illustrated a new ultrasonic nondestructive testing method to test the bonding interface between housing and core in the air .

通过对比伞裙侧表面和上下表面的微观结构，揭示了电老化和电烧蚀的发生规律；

The comparison between the microstructures of top and bottom surfaces of umbrella demonstrates the rules of electric aging and electric erosion .

最后，对加装超大伞裙复合绝缘子在新疆电网中防止鸟粪闪络和冰闪的情况作了简要介绍。

The situation and funtion of applying the presented this method in Xinjiang power grid to prevent guano flashover and icing-flashover are described in detail .

结果表明：不同伞裙结构对重冰条件下的三种支柱绝缘子的直流闪络电压影响不明显，但对临界闪络电流的影响较大；

The influence of the contours and sizes of sheds on the flashover voltages and the critical flashover currents at severely icing condition is obtained .

覆冰绝缘子伞裙间隙未桥接时，冰凌尖端的放电是影响绝缘子闪络电压的主要因素之一。

The discharge at the top of icicle is one of the main factors influencing flashover voltage when the air gap amid the sheds of ice-covered insulators is not bridged .

受车顶空间布局的限制，车顶绝缘子伞裙数目小、沿面场强高，成为高速动车组绝缘最为薄弱的环节。

The number of insulator shed is small for the restrictions of roof space , which makes the electric field on the creepage path extremely high . Therefore , roof insulators are the most weakness point in electric locomotive insulation .

在全桥情况下，三种绝缘子闪络路径一致，其闪络电压值区别不大，但伞裙结构对临界闪络电流有一定的影响。

Under heavy icing condition , the values of the flashover voltages of three kinds of insulators are the same because the lengths of their flashover distances is unanimous , but the sheds figure has influence on the critical flashover currents .