Steam Turbines

Principles of Operation In this topic you will learn to: State the function of a steam turbine. Define the term impulse movement. Describe the operation of blading in a typical single-stage steam turbine. Auxiliary Devices and Systems In this topic you will learn to: Identify typical steam turbine auxiliary devices and state the function of each device. Describe two types of turbine auxiliary systems and explain what each is used for. Describe how speed is controlled in a typical single-stage steam turbine. Explain what an overspeed trip mechanism is and describe its general operation. Turbine Components In this topic you will learn to: Identify the main parts of a typical single-stage steam turbine and state the function of each part. Turbine Startup Operation and Shutdown In this topic you will learn to: Describe a general procedure associated with the startup of a typical non-condensing single-stage steam turbine. Describe some of the general checks commonly made on a non-condensing single-stage steam turbine during operation. Identify the basic steps associated with normal and emergency shutdowns of a typical non-condensing single-stage steam turbine and related equipment. Typical Operating Problems In this topic you will learn to: Identify some common operating problems for a noncondensing single-stage steam turbine and explain how they can be corrected.