High-temperature hard sealing top-mounted fixed ball valve sealing structure

• Main Authors: FAN JUNYONG, CHEN YU, FAN WENDONG, YE QUNLI, LIU CHANGDENG, MENG QINGYIN, LI CHENGXIN
• Format: Patent
• Language: Chinese; English
• Published: 08.03.2024
• Subjects: ACTUATING-FLOATS; BLASTING; COCKS; DEVICES FOR VENTING OR AERATING; ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS; HEATING; LIGHTING; MECHANICAL ENGINEERING; TAPS; THERMAL INSULATION IN GENERAL; VALVES; WEAPONS

A high-temperature hard seal top-mounted fixed ball valve sealing structure comprises a valve body, a ball body is arranged in the valve body, a valve seat ring is arranged between the valve body and the ball body, the valve seat ring is in sealing fit with the ball body, a pre-tightening ring is further arranged on the valve seat ring, the pre-tightening ring is in threaded connection with the valve seat ring, and a spring seat is further arranged between the valve seat ring and the valve body. A disc spring, a packing backing ring, valve seat packing and a valve seat sealing ring are further sequentially arranged between the spring seat and the valve body, the back face of the pre-tightening ring abuts against the spring seat, the spring seat compresses the disc spring, the packing backing ring and the valve seat packing backwards, and a split type valve seat ring structure is adopted. A hydraulic tool can be used for pressing the spring seat, compressing the disc spring and the valve seat packing, the forc