Weight Optimization of Buck Stays using Castellated Beams
P. Rathina Kumar1, M.G.Thiruselvan2, J M Babu3, M.Rajagopal4
1P. Rathina kumar, Department of Mechanical Engineering, Vel Tech Dr RR &Dr SR Technical University, Avadi, Chennai, India.
2M.G.Thiruselvan, Department of Mechanical Engineering, Vel Tech Dr RR &Dr SR Technical University, Avadi, Chennai, India.
3J M Babu, Assist. Prof. Department of Mechanical Engineering, Vel Tech Dr RR &Dr SR Technical University, Avadi, Chennai, India.
4Dr M. Rajagopal, Professor, Department of Mechanical Engineering, Vel Tech Dr RR &Dr SR Technical University, Avadi, Chennai, India.
Manuscript received on May 29, 2014. | Revised Manuscript received on June 02, 2014. | Manuscript published on June 30, 2014. | PP: 200-203 | Volume-3, Issue-5, June 2014. | Retrieval Number: E3190063514/2013©BEIESP
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© The Authors. Blue Eyes Intelligence Engineering and Sciences Publication (BEIESP). This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/)
Abstract: The present water-tube boiler construction is based on membrane walls (tube wall panels) to form furnace envelope. Buck stay is a supporting element external to the boiler envelope stiffening the furnace against pressure differentials between gases inside the furnace and outside atmosphere. The membrane walls forming the furnace envelope alone could not withstand those pressure differentials. Hence membrane walls have been stiffened with the buck stay system placed to prevent large deformations. Buck stays are designed in accordance with any structural codes (IS 800, BS 5950 etc.) against shear, bending and axial stresses. Typical rolled & fabricated ‘I’ sections may be used as buck stay beam. This technical paper provides applicable loadings on buck stay, design considerations design procedure and to reduce the weight of buck stays using castellated beams.
Keywords: Water tube boiler, Boiler construction, Supporting structure, Mechanical properties.