Company Filing History:
Years Active: 2006-2012
Title: Koji Yakushi: Innovator in Turbine Technology
Introduction
Koji Yakushi is a prominent inventor based in Tokyo, Japan. He has made significant contributions to turbine technology, holding a total of 3 patents. His work focuses on improving the efficiency and reliability of turbine systems.
Latest Patents
One of his latest patents is a turbine system and method for starting-controlling a turbine system. This invention provides a turbine system that can start a turbine while controlling thermal stress generated in a turbine rotor. It also addresses the expansion difference due to thermal expansion between a casing and the turbine rotor, ensuring that these stresses remain below defined values. The system includes a turbine with a casing and a turbine rotor rotatably attached to the casing, along with a main steam pipe connected to the upstream portion of the casing. A control valve is incorporated to manage the flow rate of steam discharging into the casing, and a power generator is coupled with the turbine rotor. Additionally, a starting control system is designed to control the control valve while obtaining an operational amount of the control valve.
Another notable patent is the turbine starting controller and turbine starting control method. This controller features an optimum starting control unit that predicts thermal stress generated in a turbine rotor over a prediction period. It calculates a manipulated variable optimum transition pattern to minimize turbine starting time while keeping the predicted thermal stress equal to or lower than a prescribed value. The system also includes an rpm/load control unit that manages the drive of control valves based on the optimum manipulated variable.
Career Highlights
Koji Yakushi is associated with Kabushiki Kaisha Toshiba, a leading company in technology and innovation. His work at Toshiba has allowed him to develop cutting-edge solutions in turbine technology, contributing to the company's reputation for excellence in engineering.
Collaborations
He has collaborated with notable coworkers, including Akimasa Nakai and Shigeru Matsumoto. Their combined expertise has further advanced the field of turbine technology.
Conclusion
Koji Yakushi's innovative contributions to turbine technology demonstrate his commitment to enhancing efficiency and reliability in engineering. His patents reflect a deep understanding of the complexities involved in turbine systems, making him a valuable asset in the field.