High-capacity overvoltage protection gas discharge tube

The utility model discloses a high-capacity overvoltage protection gas discharge tube, which comprises a ceramic electricity accommodating cylinder or a glass electricity accommodating cylinder with opening at two ends, wherein one end of the electricity accommodating cylinder is hermetically connected to a first end electrode which is provided with a solid core, the other end of the electricity accommodating cylinder is hermetically connected to a second end electrode which is provided with a solid core, the first end electrode, the second end electrode and the electricity accommodating cylinder encircle into a closed discharge cavity, and the closed discharge cavity is filled with a inert gas medium used for storing electric energy. A first copper piece electrode, a second copper piece electrode and the third copper piece electrode are sequentially and parallelly arranged at intervals in the closed discharge cavity, wherein the copper piece electrodes are all axially arranged along the electricity accommoda