Mitsubishi Heavy Industries Limited

Hidehiko Nakane

Eisaku Ito

Tanehiro Shinohara

Masanori Yuri

Kouichi Akagi

Yutaka Ozawa

Zenichi Yoshida

Yutaka Kawata

Nobuhiro Kunitake

Masahiko Toyoda

Takahiro Ohta

Koji Takeshita

Akihiro Kawaguchi

Setunori Sakakibara

Akihiro c/o Mitsubishi Heavy Ind Ltd Kawaguchi

Zenichi c/o Mitsubishi Heavy Ind Ltd Yoshida

Yutaka c/o Mitsubishi Heavy Ind Ltd Kawata

Tanehiro c/o Mitsubishi Heavy Ind Ltd Shinohara

Nobuhiro c/o Mitsubishi Heavy Ind Ltd Kunitake

Koji c/o Mitsubishi Heavy Ind Ltd Takeshita

Kouiti c/o Mitsubishi Heavy Ind Ltd Akagi

Masahiko c/o Mitsubishi Heavy Ind Ltd Toyoda

Setunori c/o Mitsubishi Heavy Ind Ltd Sakakibara

Takahiro c/o Mitsubishi Heavy Ind Ltd Ohta

Eisaku c/o Mitsubishi Heavy Ind Ltd Ito

Masanori c/o Mitsubishi Heavy Ind Ltd Yuri

Yutaka c/o Mitsubishi Heavy Ind Ltd Ozawa

A shaft seal having a high abrasion resistance is disclosed, by which the leakage of the gas from the high-pressure side to the low-pressure side can be reduced. In the shaft seal, flexible leaves are multi-layered to form a ring shape. The shaft seal is mainly arranged around the rotation shaft of a gas turbine or the like. The relevant turbine comprises a casing, a compressor, a rotation shaft, moving blades attached to the rotation shaft, and stationary blades attached to the casing in a manner such that the stationary blades face the moving blades, wherein the shaft seals are provided between a plurality of stationary blades and the rotation shaft wherein the leaves of each shaft seal contact the rotation shaft. Under the rated operating conditions, the top ends of the leaves slightly separate from the surface of the rotation shaft due to the dynamic pressure generated by the rotation of the rotation shaft. When the turbine is not operated, the top ends of the leaves contact the rotation shaft again due to the elastic restoring force of the leaves.

Shaft seal and turbine using the same

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Kobe, Japan

Hidehiko Nakane