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Steam turbine governing : ウィキペディア英語版 | Steam turbine governing Steam turbine governing is the procedure of controlling the flow rate of steam into a steam turbine so as to maintain its speed of rotation as constant. The variation in load during the operation of a steam turbine can have a significant impact on its performance. In a practical situation the load frequently varies from the designed or economic load and thus there always exists a considerable deviation from the desired performance of the turbine.〔1966_jachens_steam turbines their construction.pdf –“Steam Turbines: Their Construction, Selection and Operation”. W. B. Jachens (Proceedings of the South African Sugar Technologists Association -1966〕 The primary objective in the steam turbine operation is to maintain a constant speed of rotation irrespective of the varying load. This can be achieved by means of governing in a steam turbine. ==Overview== Steam Turbine Governing is the procedure of monitoring and controlling the flow rate of steam into the turbine with the objective of maintaining its speed of rotation as constant. The flow rate of steam is monitored and controlled by interposing valves between the boiler and the turbine.〔“Thermal engineering” Rathore and Mahesh. M (2010) Tata McGraw-hill.p.739.〕 Depending upon the particular method adopted for control of steam flow rate, different types of governing methods are being practiced. The principal methods used for governing are described below.
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