Current Volume 7
Abstract
Electricity is a very important issue in the economic growth, progress and poverty eradication of any nation. The future of any country depends on the availability of electricity in that country. Steam turbine is a prime mover that is very essential in the generation of electricity. Most of the worlds’ electricity is generated using steam turbine. In the operation of steam turbine, there are some critical components that are affected directly by the super heated steam. This paper presents a review on three critical components; the blade, the rotor and the sliding bearing. As a result of the effect of the direct effect of the steam on the blade, some stresses will be developed. These include the centrifugal stress due to the action of centrifugal load on the blade, thermal stress, centrifugal bending stress and dynamic stress due to changing thermal load on the blade from the steam. Thermal stress also acts on the rotor shaft since the blade is attached to it. As the rotor rotates, torque is produced which results in power generation by the alternator attached to the end of the rotor shaft. The stresses that will act on the blade must not be more than the maximum allowable stress of the blade material hence; the material will fail with time during operation. Also, the shear stress on the rotor due to effect of torque must not exceed the allowable shear stress of the rotor material. The coefficient of friction, the critical pressure and the heat generated by the bearing at both ends of the rotor must also be put into consideration and must not exceed that the bearing can withstand in the selection of appropriate materials for these critical components during design.
Keywords
Blades, Rotor, Sliding Bearing, Steam Turbine and Super-heated Steam
Citations
IRE Journals:
Omojogberun, Y. V. , Kareem, B. , Adeyeri, M. K.
"Steam Turbine: A Review on Some Critical Parts" Iconic Research And Engineering Journals Volume 7 Issue 10 2024 Page 259-266
IEEE:
Omojogberun, Y. V. , Kareem, B. , Adeyeri, M. K.
"Steam Turbine: A Review on Some Critical Parts" Iconic Research And Engineering Journals, 7(10)
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