Browsing by Author "Nishiyama, Kenichi"
Now showing items 1-9 of 9
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Jain, Mayank; Nishiyama, Kenichi; Ikeno, Kyoichi (Turbomachinery Laboratory, Texas A&M Engineering Experiment Station, 2018)This paper discusses the development of Actuators over a period of time. The purpose of an Actuator (servo system) is to operate steam turbine control valves. With the increasing demand for better control of steam valves ...
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Nishiyama, Kenichi; Jain, Rishav; Oishi, Yusuke (Turbomachinery Laboratory; Texas A&M Engineering Experiment Station; Texas A & M University. Libraries, [2019])Precise and stable steam flow control to the Turbine directly relates to improved steam turbine speed and load control and reduced system mechanical wear. This paper presents a complete failure of a Governing valve seat ...
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Tsurusaki, Yuzo; Nishiyama, Kenichi; Ouchi, Tomotaka (Turbomachinery Laboratory, Texas A&M Engineering Experiment Station; Texas A & M University. Libraries; Texas A & M University. Libraries, 2021)Some cracks due to stress corrosion cracking have detected in blade grooves of steam turbine. This presentation describes the residual life and its evaluate method for SCC on Fir tree blade groove.
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Tsurusaki, Yuzo; Nishiyama, Kenichi; Ouchi, Tomotaka (Turbomachinery Laboratory, Texas A&M Engineering Experiment Station, 2022)
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Investigation and Resolution of Governing Valve Linkage Failure for Compressor Drive Steam Turbine Nishiyama, Kenichi; Jain, Mayank; Subramani, Elumalai (Turbomachinery Laboratory, Texas A&M Engineering Experiment Station, 2018)Fatigue failure of Governing Valve Linkage Rod end bearing and wear marks on several parts was observed on a extraction steam turbine (driving a centrifugal compressor) after it was in service for more than 9 year. The top ...
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Investigation and Resolution of Governing Valve Linkage Failure for Compressor Drive Steam Turbine Nishiyama, Kenichi; Jain, Mayank; Subramani, Elumalai (Turbomachinery Laboratory, Texas A&M Engineering Experiment Station, 2018)Fatigue failure of Governing Valve Linkage Rod end bearing and wear marks on several parts was observed on a extraction steam turbine (driving a centrifugal compressor) after it was in service for more than 9 year. The top ...
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Nishiyama, Kenichi; Jain, Mayank; Fuchiwaki, Shunsuke; Woon Lip, Teo (Turbomachinery Laboratory, Texas A&M Engineering Experiment Station, 2018)A 56 MW steam turbine tripped several times over a short period of time although the trip signal was not sent. A thorough examination of the turbine at site ruled out any problems with the trip system. The pressure data ...
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Nishiyama, Kenichi; Jain, Rishav (Turbomachinery Laboratory, Texas A&M Engineering Experiment Station; Texas A & M University. Libraries, [2019])Mechanical drive steam Turbines play an important role in petro-chemical plants and these Turbines are protected for safe operation by number of monitoring as well as protection systems. However, a Turbine can suffer severe ...
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Nishiyama, Kenichi; Jain, Mayank; Sugimoto, Kazuaki; Walton, Matt (Turbomachinery Laboratory, Texas A&M Engineering Experiment Station, 2018)It is shown as the outline in this short course that the role of steam turbine, history, classification, basic structure, components and their function, manufacturing and design process and control system. And also, the ...