Device for testing offline leakage rate of CMT outlet pneumatic isolation valve

• Main Authors: SUN ZHENGXU, HAN JIE, TAN JIN, JIANG WENJIE, LIAO MING, JIAO SHOUCHAO, XIA SONGHAO, RUAN HANGZHE, WANG JUN, LIU HUICHAO, JIN FEI, GAN WANXIAN, PEI XUEQIANG
• Format: Patent
• Language: Chinese; English
• Published: 15.05.2020
• Subjects: MEASURING; PHYSICS; TESTING; TESTING STATIC OR DYNAMIC BALANCE OF MACHINES ORSTRUCTURES; TESTING STRUCTURES OR APPARATUS NOT OTHERWISE PROVIDED FOR

The invention discloses a device for testing the offline leakage rate of a CMT outlet pneumatic isolation valve. The device comprises a pressing mechanism and a pneumatic actuating mechanism, whereinthe pneumatic actuating mechanism comprises a support, an air cylinder arranged on the upper part of the support, a base which is arranged below the air cylinder and provided with a cavity, a valve seat arranged at the bottom of the cavity, a valve cage located in the valve cavity and above the valve seat, and a gland which is arranged at the top end of the base and plays a sealing role. The end part of a piston rod is provided with a butt clamping block used for fixing a valve rod. The device is mainly used for verifying whether the sealing performance of the sealing surfaces of the valve seat and a valve element are intact or not in an offline state, is provided with the pressing mechanism and the pneumatic actuating mechanism, and can perform hydraulic pressure tests and air pressure tests; a plurality of digit