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정연호(Jeong Yeon-ho),김영범(Kim Young-bum),정호열(Jeong ho-youl),심영권(Shim young-kwon),최승욱(Choi seung-wook),문재휘(Moon Jae-Hui) 대한기계학회 2014 대한기계학회 춘추학술대회 Vol.2014 No.11
Steam soot-blower control valves for thermal power plants operate in a uniquely severe service and environment. They must not only frequently modulate flow over a wide range but must also maintain downstream pressure between very close limits at high differential. In addition, they also must function as block valves with tight shutoff every time they close to prevent soot-blower header pressure safety relief valve operation due to system overpressure. Satisfactory operation in these two separate functions is a problem often found in the power industry. Because of poor valve operating experience the soot-blower control valves were recently replaced with valves specifically designed for soot-blower service.