Moment checking and positioning device for nuclear-grade manual diaphragm valve

• Main Authors: MA YEYI, REN FENG, CUI YUE, ZHAO JUN, ZHOU YAN, DONG CHAO, GAO GUOFENG, RAO HAIBIN, WANG JIN, QIAO ZHIGANG, CAO DENGHONG, YI HAIWEI, LIANG WEI, GUO TAOJIE, CHEN JUNKAI
• Format: Patent
• Language: Chinese; English
• Published: 12.08.2022
• 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; MEASURING; MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER,MECHANICAL EFFICIENCY, OR FLUID PRESSURE; MECHANICAL ENGINEERING; PHYSICS; TAPS; TESTING; TESTING STATIC OR DYNAMIC BALANCE OF MACHINES ORSTRUCTURES; TESTING STRUCTURES OR APPARATUS NOT OTHERWISE PROVIDED FOR; THERMAL INSULATION IN GENERAL; VALVES; WEAPONS

The invention discloses a torque checking and positioning device for a nuclear-grade manual diaphragm valve. The torque checking and positioning device comprises a torque checking mechanism and a torque limiting mechanism, wherein the torque checking mechanism is used for checking the switching torque of the diaphragm valve; the torque limiting mechanism is used for limiting the checked switching position; the torque verification mechanism comprises a verification assembly used for being installed on a diaphragm valve hand wheel and a torque wrench used for determining the torque. The torque wrench is connected with the verification assembly in a clamped mode to drive the verification assembly to rotate and determine the switching torque. The moment limiting mechanism comprises a moment indication limiting assembly arranged on one side of the diaphragm valve and a connecting piece arranged on the moment indication limiting assembly in a limiting and sleeving mode, the connecting piece is in threaded connectio