Composite jacket parallel gap lightning arrester

The invention provides a composite jacket parallel gap lightning arrester, which comprises a lightning arrester body, a discharge rod and a discharge ball, wherein the lightning arrester body comprises a core body, a silicon rubber jacket, a first conductive bolt and a second conductive bolt, the core body is composed of an SMC layer, and a first electrode, five resistor discs and a second electrode which are sequentially arranged in the SMC layer, the silicon rubber jacket wraps the core body, the discharge rod is connected with the first electrode, the discharge ball is connected with the second electrode, end covers are mounted at two ends of the silicone rubber jacket, the first conductive bolt penetrates through the end cover on one side to be connected with the first electrode and is connected with a high-voltage bus, the second conductive bolt penetrates through the end cover on the other side to be connected with the second electrode and is connected with a ground wire, and the discharge rod and the discharge ball form a parallel discharge gap of the lightning arrester body. According to the invention, the parallel gap design is adopted, the lightning arrester body does not independently bear the task of releasing overvoltage and current any more, the overvoltage and current is released through the parallel gap, and large current can be shared, so that the service life of the lightning arrester is greatly prolonged.