110～220kV可调式相间间隔棒的研制与应用

Research and Application of 110～220kV Adjustable Phase-to-phase Spacer Clamp

对现有架空输电线路中单(双分裂)导线复合绝缘相间间隔棒及其两端金具的结构进行了分析,考虑导线弧垂允许架线偏差因素,建议相间间隔棒一端或两端增设调整板实现结构高度为可调节式;指出现有球窝连接金具的构造缺陷,认为缩小球窝出口圆筒内径,只允许球头杆在球窝内轴向位移和轴向转动,避免导线剧烈舞动时球头不规则动作而受到附加弯矩导致受损甚至断裂现象;应设计球头在下,球窝在上,或球头杆处应设防雨罩,避免雨水进入球窝内,将球头和球窝冻住,失去其功能;针对导线固定夹具加剧微风振动、甚至导线剧烈舞动导致其破损情况,建议采用防冰雨型360°回转式线夹;通过各地导线舞动运行经验,相间间隔棒完好无损而端部连接金具却出现变形甚至断裂现象,认为提高相间间隔棒端部连接金具的机械荷载标准是关键。

The complex insulating phase-to-phase spacer clamp and its two top hardware in the single （double bundle） conductor of existing overhead transmission lines are analyzed, considering allowable stringing deviation of conductor sag, is suggested that one or two end of phase-to-phase spacer clamp is elevated with adjusting plate to realize adjustable structure; the structural defect about existing ball and socket coupling hardware is indicated, it is considered that by reducing ball-socket outlet barrel inner diameter, only allows ball head rod in ball socket axis to displacement and axis to turns, may avoid ball head does not rules action and is additional bent moments led damaged even fracture phenomenon when wire violent dancing; it should be designed that ball head is under, ball socket is aboard, or rain cover should be set at ball head rod, avoid rain enter ball socket and frozen ball head and ball socket and lost its function; considering wire fixed fixture intensify breeze vibration and even wire violent dancing led its damaged situation, the anti-ice rain type 360 ~ Rotary type line clips is suggested to be adopted; through the experience of around wire dancing run, phase-to-phase spacer clamp is intact, but its end fitting appear deformation even fracture phenomenon, it is considered that improving machinery load standard of phase-to-phase spacer clamp connection hardware is the key.