HIGH-TEMPERATURE QUICK-OPENING SPHERICAL SEALING SHUT-OFF VALVE

• Main Authors: YANG, Chengshuai, XIANG, Yong'an, XIANG, Guanghong, XIANG, Wei, XIANG, Guangwu, GU, Liaoyong, SU, Jingpan, ZHANG, Xiheng, ZHANG, Sunli, ZHAO, Jia
• Format: Patent
• Language: Chinese; English; French
• Published: 02.06.2022
• 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

The present invention relates to the field of valves. A high-temperature quick-opening spherical sealing shut-off valve, which comprises a body (1), a seat (2), a bonnet (3), a disc (4), a stem (5), and a driving device (6) for driving the stem (5) to rotate, wherein a friction adjustment mechanism for adjusting a frictional force between the disc (4) and the seat (2) is mounted on the stem (5); the stem (5) and the disc (4) are coaxially arranged and fixedly connected; the body (1) and the bonnet (3) are provided with a gas discharge passageway for gas to circulate therein; the disc (4) and the seat (2) are positioned on the path of the gas discharge passageway; the seat (2) is fixedly mounted in the body (1) and is provided with a first through hole (21) that communicates with the gas discharge passageway; and the disc (4) is provided with a second through hole (41) corresponding to the first through hole (21). The gas discharge passageway has three states, i.e. the gas discharge passageway being open when