Electrode tube structure for tube-type water electrolyser and electrolyser using same

The utility model relates to an electrode tube structure for a tube-type water electrolyser, which is an electrode tube group formed by a plurality of electrode tubes with different diameters, which are sleeved sequentially; insulation washers are arranged at the upper and the lower ends of the electrode tube group and are fastened through flanges for sealing; and an annularly-cylindrical electrolytic cavity is formed by the outer wall and the inner wall of every two adjacent electrode tubes and the insulation washers at the upper and the lower ends in a surrounding manner. The utility model also discloses a tube-type water electrolyser using the tube-type electrode tube structure. The tube-type electrolyser provided by utility model has the characteristics of simple structure, convenience in installation, strong resistance to pressure and high electrolytic efficiency, and can work continuously for a long term.