MAINTENANCE TOOL USED FOR DOUBLE INSULATOR STRINGS OF DIRECT CURRENT TRANSMISSION LINE

• Main Authors: SONG, QIFENG, ZHANG, MINGXU, SHI, FENGXIANG, CHEN, MING, GENG, SANPING, SU, YONGJIE, KANG, SHUFENG, WANG, XUEBIN, YAO, BOYAN, JIAO, JUXUAN, LI, ZHONGSHENG, WANG, JUN, LI, JIAN, GAO, ZHI
• Format: Patent
• Language: English; French
• Published: 05.07.2012
• Subjects: CONVERSION OR DISTRIBUTION OF ELECTRIC POWER; ELECTRICITY; GENERATION; INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINEDOPTICAL AND ELECTRIC CABLES OR LINES

A maintenance tool used for double insulator strings of a direct current transmission line comprises fixtures installed at the two sides of the double insulator strings and a tensioning device connected between the fixtures. The fixture comprises a clamp (1) on a V type string connected fixedly to a fitting hanging point angle steel at a tower body side, a clamp (2) on a cross arm connected fixedly on a cross arm wrapper sheet (8), and a knife-like clamp (3) connected fixedly to a V-type in-line plate (6). The tensioning device is a mechanical transmission lead screw (4) which is connected between the clamp (1) on the V type string and the knife-like clamp (3) or between the clamp (2) on the cross arm and the knife-like clamp (3). The maintenance tool has the advantages of sensible structure, high integral strength, low weight and reliable operation, thereby providing a reliable guarantee for the safe commissioning as well as routine maintenance of the direct current transmission line.