Location History:
- Takasago, JP (1999 - 2002)
- Hyogo, JP (2013)
Company Filing History:
Years Active: 1999-2013
Title: Naoki Hagi: Innovator in Gas Turbine Technology
Introduction
Naoki Hagi is a prominent inventor based in Takasago, Japan. He has made significant contributions to the field of gas turbine technology, holding a total of 5 patents. His work focuses on enhancing the efficiency and performance of gas turbine plants.
Latest Patents
One of Hagi's latest patents is for a gas turbine plant that enables active clearance control. This innovation ensures the tip clearance of first-stage turbine rotor blades during start-up and achieves the minimum tip clearance during load operation. The design includes a cooler in the air system for cooling second-stage turbine stator blades. A first-stage segmented ring and a second-stage segmented ring are supported by the same blade ring member, allowing for effective thermal expansion control and clearance management.
Another notable patent is for a combined cycle plant with gas turbine rotor clearance control. This invention reduces gas turbine rotor blade tip loss and minimizes leakage of working fluid through gaps in the annular flow passage. The turbine is designed to be expandable or contractible in the radial direction, enhancing its operational flexibility. The first and second blade rings correspond to the respective turbine stator and rotor blades, each comprising a heating medium flow passage for steam circulation.
Career Highlights
Naoki Hagi is currently employed at Mitsubishi Heavy Industries Limited, where he continues to innovate in the field of gas turbines. His work has been instrumental in advancing the technology used in combined cycle plants, contributing to more efficient energy production.
Collaborations
Hagi has collaborated with notable colleagues such as Koichi Akagi and Ryotaro Magoshi. Their combined expertise has furthered the development of innovative solutions in gas turbine technology.
Conclusion
Naoki Hagi's contributions to gas turbine technology exemplify his commitment to innovation and efficiency. His patents reflect a deep understanding of the complexities involved in turbine design and operation. Hagi's work continues to influence the industry, paving the way for future advancements in energy technology.