Sealing structure of spindle bolt, and gas turbine
AssigneeMitsubishi Heavy Industries, Ltd.
InventorsKazuo Uematsu, Kazuharu Hirokawa
Life of this patent
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Abstract
A first stage rotor disk (50a) and a connecting member (30) on the compressor side are fixed by a spindle bolt (20). The spindle bolt (20) is covered with a tubular member (100), between the first stage rotor disk (50a) and the connecting member (30) on the compressor side.
Claims6
A sealing structure of a spindle bolt, wherein rotor disks and a connecting member on a compressor side are fixed by a spindle bolt, and between a first stage rotor disk and the connecting member on the compressor side, of a turbine rotor in a gas turbine having a steam path therein, the circumference of the spindle bolt is covered with a tubular member in which a section thereof vertical to the axial direction includes a section of a bolt hole for passing the spindle bolt therethrough, and the ends of the tubular member are made to abut on the first stage rotor disk and the connecting member on the compressor side, respectively.
A sealing structure of a spindle bolt, wherein rotor disks and a connecting member on a compressor side are fixed by a spindle bolt, and of a turbine rotor in a gas turbine having a steam path therein, a first annular member and a second annular member arranged inside the first annular member are arranged so that the ends thereof abut on the first stage rotor disks and the connecting member on the compressor side, and the spindle bolt is passed between the first annular member and the second annular member.
A gas turbine that has a plurality of rotor disks having a rotor blade on the periphery thereof, which cools the rotor blade or the rotor disk, and other hot members by steam, the gas turbine comprising:
- a compressor that compresses air to produce combustion air;
- a combustor that supplies fuel to the combustion air produced by the compressor to generate combustion gas;
- and
- a turbine rotor having a feed path or a recovery path for the steam therein, in which rotor disks and a connecting member located on the compressor side are fixed by a spindle bolt,
- wherein between the first stage rotor disk and the connecting member, the circumference of the spindle bolt is covered with a tubular member in which a section thereof vertical to the axial direction includes a section of a bolt hole for passing the spindle bolt therethrough, and the opposite ends of the tubular member are made to abut on the first stage rotor disk and the connecting member on the compressor side, respectively.
A gas turbine that has a plurality of rotor disks having a rotor blade on the periphery thereof, which cools the rotor blade or the rotor disk, and other hot members by steam, comprising:
- a compressor that compresses air to produce combustion air;
- a combustor that supplies fuel to the combustion air produced by the compressor to generate combustion gas;
- and
- a turbine rotor having a feed path or a recovery path for the steam therein, in which rotor disks and a connecting member located on the compressor side are fixed by a spindle bolt,
- wherein a first annular member and a second annular member arranged inside the first annular member are arranged so that the ends thereof abut on the first stage rotor disks and the connecting member, and the spindle bolt is passed between the first annular member and the second annular member.
Dependencies are inferred from the claim text.