Double-backflushing compression combined arc extinguishing lightning protection device

• Main Authors: HUANG PING, BI JIETING, WANG JUFENG, YAN RENBAO, HAN LI, WANG YANLEI
• Format: Patent
• Language: Chinese; English
• Published: 27.10.2020
• Subjects: BASIC ELECTRIC ELEMENTS; CABLES; CONDUCTORS; CORONA DEVICES; ELECTRICITY; GENERATING IONS TO BE INTRODUCED INTO NON-ENCLOSED GASES; INSULATORS; OVERVOLTAGE ARRESTERS USING SPARK GAPS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING ORDIELECTRIC PROPERTIES; SPARK GAPS; SPARKING PLUGS

The invention discloses a double-backflushing compression combined arc extinguishing lightning protection device, which comprises a semi-closed hollow cylinder with an opening in the upper end, wherein an upper backflushing pipeline (12), a middle compression arc extinguishing pipeline (13) and a lower backflushing pipeline (14) are sequentially arranged in the semi-closed hollow cylinder from topto bottom, the bottom of the upper backflushing pipeline (12) and the top of the lower backflushing pipeline (14) are each provided with a lightning arrester (1), a plurality of compression pipes (2)are arranged in the middle compression arc extinguishing pipeline (13), and a through hole is formed in the pipe wall of the bottom of the lower backflushing pipeline (14). According to the invention, the whole device is connected to the two ends of an insulator in parallel, and the breakdown voltage of the protected insulator string is greater than that of the parallel gap, so that the parallelgap is broken down preferen