Nuclear grade control valve examination and test system

• Main Authors: OUYANG, CHII-NENG, YU, CHENG-JUNG, KO, HSUEHAO, LI, YAO-MIN
• Format: Patent
• Language: Chinese; English
• Published: 01.05.2017
• 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; MECHANICAL ENGINEERING; NUCLEAR ENGINEERING; NUCLEAR PHYSICS; NUCLEAR POWER PLANT; 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

A Nuclear grade control valve examination and test system is provided and includes a hermetically sealed cavity, a base, a guide unit, a winder, a cable and a length measurement device. The hermetically sealed cavity includes a chamber for receiving a control valve. Ambient conditions within the chamber, such as temperature, pressure and humidity, are controllable. The base is disposed outside the hermetically sealed cavity. The guide unit is disposed on the control valve and/or the base. The winder and the length measurement device are disposed on the base. The cable connects with a valve rod of the control valve and extends out of the hermetically sealed cavity to connect with the winder. The cable is wound on the guide unit, wound up by the winder, and thus rendered taut at any time. The length measurement device has a measurement element coupled to the cable and displays the displacement of the measurement element, thereby obtaining the displacement and the opening of the valve rod of the control valve.