Cathode cable structure for impressed current cathodic protection device of thermal production well

The invention relates to a cathode cable structure for an impressed current cathode protection device of a thermal production well, which comprises a stainless steel connecting section, the first end of the stainless steel connecting section can be fixedly connected to a sleeve, and the second end of the stainless steel connecting section is electrically connected with an impressed current cathode cable; a first rubber sleeve is detachably arranged on the stainless steel connecting section from the first end to the inside in a sleeving manner, and the first rubber sleeve is arranged in a high-temperature-resistant manner; the stainless steel connecting section is sleeved with a second rubber sleeve inwards from the second end, and the second rubber sleeve is oil-water resistant. The adjacent ends of the second rubber sleeve and the first rubber sleeve are arranged in an abutting mode, and the adjacent ends of the first rubber sleeve and the second rubber sleeve are in waterproof connection. A conventional cab