Contact Pressure Validation of Steam Turbine Casing for Static Loading Condition
Journal Title: International Journal of Modern Engineering Research (IJMER) - Year 2013, Vol 3, Issue 5
Abstract
Steam Turbines are devices used to convert thermal energy of steam into mechanical energy, which may be used to produce Electrical Energy. Steam turbine generator units are being used extensively all over the world for generation of electric power and for co-generation of steam and power. Contact pressure and pretension in bolts-analysis has been made easier in recent years due to the availability of high computational capabilities and flexibility in the computational methods using finite element analysis. In the present work, one such analysis is carried out to evaluate the contact pressure in a high pressure steam turbine casing. The shape and design of a steam turbine casing depends on key sensitivity parameters like bolt pre-tensions, contact pressure and thickness of casing which determine the structural integrity of the casing. The preset work reviews a recent structural integrity assessment carried out on a high-pressure turbine inner casing that had suffered from temper embrittlement Conventional design of a steam turbine casing is considered. Experimental work is carried out at Maxwatt to verify the contact pressure. The assessment will be carried out to demonstrate that the casing can be safely returned to service based on custom made revised operating conditions. The experimental results will be verified through finite element Analysis results.
Authors and Affiliations
Laxminarayan K.
Keywords
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