Inner oil retainer sealing structure for pump turbine guide bearing

The utility model provides an inner oil retainer sealing structure for a guide bearing of a water pump turbine, which comprises a central shaft, an oil retainer is fixed at the annular outer end of the central shaft through an annular plate, and a high-temperature-resistant sealing element is fixed at the side end, opposite to the annular plate, of the oil retainer. A clamping limiting piece usedfor conducting extrusion limiting on the high-temperature-resistant sealing piece is inserted into the high-temperature-resistant sealing piece, the high-temperature-resistant sealing piece is attached to the annular outer end of the center shaft, the annular plate and the high-temperature-resistant sealing piece are fixed to the two ends of the oil blocking ring respectively, and the annular outer end of the center shaft is sleeved with the annular plate. And the annular plate is fixedly connected with the central shaft through at least two first bolts, and the at least two first bolts are annularly arranged. The sea