Mitsubishi Heavy Industries Limited

Shin Koga

Takashi Nakano

Shin Nishimoto

Hidekazu Uehara

Tanehiro Shinohara

Masanori Yuri

Kouichi Akagi

Hisao Miyake

Katsuhiko Shoda

Akihiko Yano

Fumiharu Takahashi

Disclosed is a lubricant sealing structure for a gear coupling, which can firmly prevent the leaking of the lubricant due to vibration or the like in the axial and radial directions inside the gear coupling. A sealing member is a cloth-inserted rubberhaving flexibility. The cloth-inserted rubberhas a first end being fixed to a fixing memberon a cover platemounted on a side of an outer ringand a second end being fixed to another fixing memberon a side of the drive shaftin liquid tight manner in the axial direction of a drive shaft. Each of the first and second ends of the cloth-inserted rubberhas a face extending in a direction that is perpendicular to the axial direction. The cloth-inserted rubberseals the lubricant at the face of said each of the first and second ends.

Lubricant sealing structure for gear coupling

The present invention reduces the amount of gas which leaks and flows from a high pressure side to a low pressure side of the axis and maintains good sealing performance even at high differential pressures. The invention discloses an axis sealing mechanism comprising casings which are supported inside of the stable portion, a plurality of planar plates, which are mutually spaced around the axis, each of which is fixed to the casings, positioned so that an inner end of each planar plate makes an acute angle with a peripheral surface of the axis and contacts the peripheral surface of the axis over a predetermined length in an axial direction, a high pressure side plate which is arranged at a high pressure side and a low pressure side plate which is arranged at a low pressure side so as to hold the planar plates therebetween and a flexible plate which is arranged between the planar plates and the high pressure side plate, and is flexible in an axial direction. The invention also discloses a turbine which provides the above sealing mechanism.

Axis seal mechanism and turbine

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Nagasaki, Japan

Shin Koga