Thermal Analysis of a Three Dimensional Model for Low- Pressure Steam Turbine

Abstract

                    A steam turbine is a device that extracts thermal energy from pressurized steam and uses it to do mechanical work on a rotating output shaft. The LP turbine is a pressure compounded, either single or dual axial flow, condensing reaction turbine. which  receives  the  impulse  directly  from  the steam  jet  and  converts  this  force  into  the  driving  force. Statistics  has  shown  that  LP  blades  are  usually  more predisposed  to  failure  compared  to  blades  in  HP  or  IP turbines. To efficiently extract work out of this lower pressure steam, reaction balding is used on the LP turbine. In this project work analyses the effects of thermal and structural load on a low steam turbine blade under the operating conditions.  Stresses due to thermal of low Pressure Steam Turbine blade of power stations analyzed in working conditions. In first stage a three dimensional model of turbine blade was prepared in mechanical catia software. In this model using material is low steel alloys.