High-efficiency sleeve pipe

The utility model relates to a sleeve pipe, in particular to a high-efficiency sleeve pipe used for a transformer. The high-efficiency sleeve pipe comprises a conductive rod and a mounting plate. The mounting plate is provided with a conductive rod inserting hole, the conductive rod is inserted into the conductive rod inserting hole, a lower porcelain sleeve is arranged below the conductive rod and the mounting plate, an upper porcelain sleeve is arranged on the conductive rod and mounting plate, the lower porcelain sleeve and the upper porcelain sleeve are arranged at an interval, the bottom of the upper porcelain sleeve is embedded into the lower porcelain sleeve, a porcelain gland which is connected with the upper porcelain sleeve in a pressing mode is arranged on the upper portion of the upper porcelain sleeve, and a connector lug which is fixed with the conductive rod is arranged on the upper portion of the conductive rod. The high-efficiency sleeve pipe is compact in structure and convenient to use, and