Sliding bearing for steam turbine

The utility model provides a sliding bearing for a steam turbine, the bearing comprises a rotating inner ring, a fixed outer ring, a fixed part and a plurality of rolling pieces, the rotating inner ring is rotatably connected with the fixed outer ring through the rolling pieces, the rotating inner ring is used for being connected with a transmission rod of the steam turbine, at least one side of the rotating inner ring is provided with an annular surface, and the fixed part is arranged on the annular surface. The annular surface is mounted on the rotating inner ring, the outer edge of the annular surface at least covers part of the fixed outer ring, the fixed part is annular and is provided with a plurality of fixed rods, the fixed part is fixedly connected with the fixed outer ring through the fixed rods, and a ventilation gap is formed between every two adjacent fixed rods. By arranging the annular surface, the rotary inner ring and the fixed outer ring are shielded, and hot air is prevented from being blow