Steam turbine shaft end sealing structure device

• Main Authors: ZHANG PENGCHENG, CHENG XUELIANG, WANG SHUNLI, LI GUANGLEI, JING YUQI, WANG DONG, SHAO CHONGHUI, LYU BOWEN, LIU YANG, LU HONGTAO, WEI KUN
• Format: Patent
• Language: Chinese; English
• Published: 14.11.2023
• Subjects: BLASTING; ENGINE PLANTS IN GENERAL; HEATING; LIGHTING; MACHINES OR ENGINES IN GENERAL; MECHANICAL ENGINEERING; NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAMTURBINES; STEAM ENGINES; WEAPONS

A steam turbine shaft end sealing structure device belongs to the field of steam turbine air seals. The steam turbine shaft end sealing device solves the problems that the stress condition of an existing steam cylinder is complex during operation, the steam cylinder deforms under the action of the stress, air leakage is caused at the joint of the shaft ends, and the sealing effect of the shaft ends of a steam turbine is poor. Air seal body connecting parts are arranged in annular grooves in an outer side air seal body and an inner side air seal body respectively, a rotor shaft end connecting part is arranged at the rotor shaft end, elastic washers of the air seal body connecting parts are arranged at the bottoms of the annular grooves, and spring pieces are arranged between the end faces of air seal blocks and the top faces of the inner sides of the annular grooves. A shaft end sleeve of the rotor shaft end connecting part is arranged at the rotor shaft end, second air sealing teeth are arranged on the shaft