Turbine and gas turbine
AssigneeMitsubishi Heavy Industries, Ltd.
InventorsNaonori NAGAI, Hiroyoshi TORIKAI, Hiroshi WATANABE
Life of this patent
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Abstract
A turbine includes a diffuser. This diffuser includes a combustor basket, an outer shell, a plurality of struts, and a protrusion. The protrusion is configured so that a front end thereof located on one side in the direction of the axis is disposed between a leading edge of the strut on the one side in the direction of the axis and a trailing edge of the strut on the other side in the direction of the axis, and a rear end thereof located on the other side in the direction of the axis is disposed farther along in the direction of the axis on the other side than the trailing edge.
Claims5
A turbine comprising:
- a turbine rotor which extends along an axis and is rotatable toward one side in a circumferential direction of the axis;
- a turbine casing which covers the turbine rotor from an outer circumferential side thereof;
- a plurality of turbine blades which are arranged on an outer circumferential surface of the turbine rotor in the circumferential direction of the axis and in which at least portions thereof on other side in a direction of the axis are curved from the one side toward the other side in the circumferential direction;
- a plurality of turbine vanes provided on an inner circumferential surface of the turbine casing to be adjacent to the turbine blades in the axial direction and arranged in the circumferential direction;
- and
- a diffuser which is provided on the other side of the turbine blade in the direction of the axis and forms an exhaust flow path through which an exhaust gas flows from the one side in the direction of the axis to the other side,
- wherein the diffuser comprises a combustor basket which extends along the axis, an outer shell which covers the combustor basket from the outer circumferential side and forms the exhaust flow path between the combustor basket and the outer shell, a plurality of struts which are disposed in the exhaust flow path at intervals in the circumferential direction, connect the combustor basket to the outer shell and are disposed at a front side in a rotation direction of the turbine rotor from an inner side toward an outer side in a radial direction, and a protrusion which is arranged between the struts adjacent to each other in the circumferential direction, protrudes from an outer circumferential surface of the combustor basket and extends in the direction of the axis,
- a front end of the protrusion on the one side in the direction of the axis is disposed between a leading edge of the strut on the one side in the direction of the axis and a trailing edge of the strut on the other side in the direction of the axis, and
- a rear end of the protrusion on the other side is disposed farther along in the direction of the axis on the other side than the trailing edge.
Dependencies are inferred from the claim text.