Mitsubishi Heavy Industries Limited

Sunao Umemura

Koichi Akagi

Jun Kubota

Yoichi Iwasaki

Yasuhiro Ojiro

Masaki Ono

Gas turbine combustor by-pass valve device for opening and closing a by-pass valve is improved to uniformly control air supply into a combustion area for appropriate combustion. A drive shaft,for opening and closing a driven by-pass valve,is provided in turbine casing,where an outside obstruction is located which would interfere with a projecting drive shaft,. The driven shaft,has a short length to be provided in the turbine casing,. An adjacent main driving shaft,for opening and closing main driving by-pass valve,is provided adjacent to the driven shaft,. Link mechanism,is provided between the adjacent main driving shaft,and the driven shaft,so that rotary movement of adjacent main driving shaft,driven by outside drive means via the drive shaft,is transmitted to the driven shaft,and, thus, to the driven by-pass valve,. Thus, partial drive shafts,are made shorter so as not to project outside of the turbine casing,and interfere with outside obstruction, but all the by-pass valves,provided along circumferential direction of the turbine casing,can be operated to be opened and closed uniformly.

Gas turbine combustor by-pass valve device

Rotating machine seal device is improved so that seal plate is fitted to rotating portion firmly, thereby self-induced vibration of the seal plate is reduced and occurrence of abrasion or thinning of the seal plate due to the self-induced vibration and sealing deterioration accompanying therewith are prevented. In rotating machine seal device having seal plate (,) inserted into groove (,) provided in disc portion (,) driven rotationally, said seal device being for sealing fluid between fluid passage (,) on outer circumferential side of said groove (,) and fluid passage (,) on inner circumferential side of said groove (,), said seal plate (,) is divided into plural pieces along circumferential direction thereof to be inserted into said groove (,) of the disc portion (,) and spring plate (,) is disposed on inner circumferential side of said seal plate (,) so that said seal plate (,) is pressed against seal surface (,) of said groove (,) by spring force of said spring plate (,). Also, said seal plate is divided into plural pieces and one piece (,&prime;) has projection portion (,) and another piece (,) has groove portion (,) so that they are mated with each other to be inserted into said groove (,).

Seal apparatus for rotary machines

Gas turbine combustor by-pass valve device for opening and closing by-pass valve is improved to control uniformly air supply into combustion area for appropriate combustion. Drive shaft,for opening and closing driven by-pass valve,is provided in turbine casing,where outside obstruction is located to interfere with projecting drive shaft,The driven shaft,is made in short length to be provided in the turbine casing,Adjacent main driving shaft,for opening and closing main driving by-pass valve,is provided adjacently to the driven shaft,Link mechanism,is provided between the adjacent main driving shaft,and the driven shaft,thereby rotary movement of adjacent main driving shaft,driven by outside drive means via the drive shaft,is transmitted to the driven shaft,and thus to the driven by-pass valve,Thus, partial drive shafts,are made shorter not to project outside of the turbine casing,to interfere with outside obstruction and still all the by-pass valves,provided along circumferential direction of the turbine casing,can be operated to be opened and closed uniformly.

Growing community of inventors

Takasago, Japan

Sunao Umemura