발전소 스팀제어용 유압서보 액추에이터의 씰 수명 향상에 관한 연구 = A Study on the Seal Life Improvement of the Hydraulic Servo Actuator for Steam Control of Power Plants

다국어 초록 (Multilingual Abstract)

The power plants use turbine output control devices to supply or shut off steam to high pressure and low-pressure steam turbines connected to generators. This turbine output control device is driven by a hydraulic servo actuator. The gas flows into the hydraulic servo actuator during periodic inspection or normal operation, and the resulting adiabatic compression of the gas raises the internal temperature of the actuator to 500 ℃. This temperature increase causes the seals to burn and show wear and tear, resulting in failure. In this study, an air vent valve was installed to allow gas inside the hydraulic servo actuator to flow large quantities of air at the beginning of the operation and after the periodic inspection. Gas was passed through for only minute flow during normal operation of the power plant. By applying the air vent valve, it improves the reliability of the hydraulic servo actuator by discharge the gas appropriately to improve the life of the seal.

참고문헌 (Reference)

1 최인규, "한국 표준형 원자력 발전소 증기터빈 보호 및 제어를 위한 운전인자 선정과 운전반 운영" 한국조명.전기설비학회 25 (25): 71-78, 2011

2 이용범, "발전소의 스팀제어용 유압서보 액추에이터의 공기배출 밸브에 관한 연구" 대한기계학회 40 (40): 397-402, 2016

3 이용범, "발전소용 유압 서보액추에이터의 쿠션 모델링 및 시뮬레이션" 한국윤활학회 29 (29): 7-12, 2013

4 J. H. Roh, "The development of turbine valve actuator efficiency analysis system for the standard power plants" 25 (25): 537-541, 2002

5 "SimulationX 3.6 user manual and library manual" ITI GmbH 2014

6 Y. B. Lee., "Secure Reliability of Turbine Power Control Actuator for Power Plants" 7 (7): 22-26, 2010

7 Y. B. Lee, "Performance characteristics analysis of the hydraulic system when hydraulic fluid contains a gas" 770-772, 2013