Design and Analysis of High-pressure Casing of a Steam Turbine

Laxminarayan, K.; Jayanth, H.S.; Reddy, Mallamma V.

doi:10.1016/j.mspro.2014.07.364

Cited by 2 publications

(1 citation statement)

References 2 publications

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“…The German company Siemens delivered the first oil-free steam turbine to lubricate its bearings at the end of 2010. Unlike other steam turbines, it operates at a relatively high speed (5,700 rpm) without the need for oil cooling [6]. The University of Texas has developed a flywheel for a bus that operates at 40,000 rpm with magnetic bearings.…”

Section: Introductionmentioning

confidence: 99%

Dynamic Modeling and Parametric Analysis of the Magnetic Stiffness on a Radial Heteropolar Rotor Magnetic Bearing (RMB)

Trentini

Santos

Reichow

et al. 2021

IJECER

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This paper presents both the dynamic modelling and the study of the variation of certain physical parameters (pole area, gap and base current) that change the magnetic stiffness of a radial heteropolar Rotor Magnetic Bearing (RMB) aiming at the analysis of the magnitude of its control current for three different equilibrium points. The RMB is modelled as a fully uncoupled symmetric active 8-pole magnetic bearing. The analysis is performed using spectral cubes for a better visualisation of the posed problem. The saturation analysis of the RMB is also performed. At last, it is shown that a control current with the same magnitude as the base current is reached with minimum pole area and air gap s0 = 528 um.

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Section: Introductionmentioning

confidence: 99%

Dynamic Modeling and Parametric Analysis of the Magnetic Stiffness on a Radial Heteropolar Rotor Magnetic Bearing (RMB)

Trentini

Santos

Reichow

et al. 2021

IJECER

View full text Add to dashboard Cite

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Evaluation of Structural Integrity and Leakagefor a Gas Turbine Casing

Won¹,

Seo²,

Woo³

et al. 2016

jcoseik

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Because typical gas turbine systems have frequent startup and shutdown operations, it is likely to cause cracks at the gas turbine casing and gas leakages at casing flanges due to thermal fatigue and embrittlement. Therefore, the evaluation of structural integrity and gas leakage at the gas turbine casings must be performed. In this paper, we have evaluated the structural integrity of the turbine casing and bolts under a normal operation in accordance with ASME B&PVC and evaluated the leakage at casing flanges by examination of contact pressure calculated using the finite element analysis. Finally, we propose a design flow including finite element modeling, the interpretation and evaluation methods for gas turbine casings. This may be utilized in the design and development of gas turbine casings.

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Design and Analysis of High-pressure Casing of a Steam Turbine

Cited by 2 publications

References 2 publications

Dynamic Modeling and Parametric Analysis of the Magnetic Stiffness on a Radial Heteropolar Rotor Magnetic Bearing (RMB)

Dynamic Modeling and Parametric Analysis of the Magnetic Stiffness on a Radial Heteropolar Rotor Magnetic Bearing (RMB)

Evaluation of Structural Integrity and Leakagefor a Gas Turbine Casing

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