Kabushiki Kaisha Toshiba

Ikuo Saito

Hisashi Matsuda

Yutaka Hashiba

Yasuo Kabata

Yoshihiro Taniyama

Toshio Hirano

Sueyoshi Mizuno

Yukihiko Kazao

Hitoshi Sakakida

Kohichi Nakayama

Kenji Osaki

Makoto Mikami

Hidekazu Shiomi

Toshiaki Hirate

Takeshi Hayashi

According to the embodiment, there is provided a blade vibration measuring apparatus, having, a contactless displacement sensor which outputs a displacement measurement signal as measuring a displacement of a turbine moving blade in a rotation axis direction, a blade top position identifying device which outputs a blade top position identification signal to identify a top position based on a distance between the contactless displacement sensor and the top position of the turbine moving blade as receiving the displacement measurement signal output from the contactless displacement sensor, and a blade vibration calculating device which calculates vibration amplitude and a vibration frequency of the turbine moving blade based on temporal variation of the distance between the contactless displacement sensor and the top position of the turbine moving blade as receiving the blade top position identification signal output from the blade top position identifying device.

Blade vibration measuring apparatus

Hydrogen gas is circulated to cool an electric rotating machine main body, and brush seals are provided to contact a predetermined position on the outer circumferential surface of a rotating shaft. As a result, contact of a sealing oil and the hydrogen gas, contact of a lubricating oil and the sealing oil in the bearing, and leakage of the hydrogen gas outside the machine are prevented.

Electric rotating machine with bearing seals

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Yokohama, Japan

Ikuo Saito