Over-speed control system of water turbine

• Main Authors: CHEN QINGXIAO, WANG XIANGWEI, YANG GUOXIAN, HUANG GUOMING, LUO ZHENYE
• Format: Patent
• Language: Chinese; English
• Published: 10.07.2013
• Subjects: BLASTING; HEATING; LIGHTING; MACHINES OR ENGINES FOR LIQUIDS; MECHANICAL ENGINEERING; OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR; PRODUCING MECHANICAL POWER; WEAPONS; WIND, SPRING WEIGHT AND MISCELLANEOUS MOTORS

The utility model discloses an over-speed control system of a water turbine. According to the over-speed control system of the water turbine, an opening-degree signal executing driving mechanism is connected with a speed regulator guide vane and a PLC speed regulating control system, receives an opening-degree signal set value and controls the speed regulator guide vane, wherein the opening-degree signal set value is given to the speed regulator guide vane by the PLC speed regulating control system. An opening-degree displacement sensor is connected with the speed regulator guide vane and used for sensing and measuring an actual opening-degree value of the speed regulator guide vane and sending the actual opening-degree value to the PLC speed regulating control system. The PLC speed regulating control system compares the collected actual opening-degree value of the speed regulator guide vane with the opening-degree signal set value. When a comparing result meets a preset over-speed warning condition, the PLC