Title:
TURBINE
Document Type and Number:
Japanese Patent JP2016138483
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide a turbine equipped with a seal device that can reduce a leak flow of a fluid between each stationary vane and a rotor.SOLUTION: A turbine comprises a seal device. The seal device includes: at least one stepped surface which is provided in a region on an outer circumferential surface of a rotor facing a shroud of each stationary vane in a radial direction of the rotor, which faces upstream in a flow direction of a fluid, and which partitions the region on the outer circumferential surface into at least two segments in an axial direction of the rotor; at least two seal fins which protrude from the stationary vane to the at least two segments, and which face the at least two segments each via a seal gap, respectively; and a swirl-component application section which is provided on one end side of the shroud of the stationary vane in the axial direction of the rotor and which can apply a swirl component to the fluid flowing toward the seal cavity.SELECTED DRAWING: Figure 3
Inventors:
KUWAMURA SACHIHIRO
OYAMA KOJI
TANAKA YOSHINORI
SUGISHITA HIDEAKI
OYAMA KOJI
TANAKA YOSHINORI
SUGISHITA HIDEAKI
Application Number:
JP2015013138A
Publication Date:
August 04, 2016
Filing Date:
January 27, 2015
Export Citation:
Assignee:
MITSUBISHI HITACHI POWER SYS
International Classes:
F01D11/02; F01D11/08; F02C7/28; F16J15/22; F16J15/447
Domestic Patent References:
| JP2011080452A | 2011-04-21 | |||
| JPS58222902A | 1983-12-24 | |||
| JPS55159366A | 1980-12-11 | |||
| JP2012137006A | 2012-07-19 | |||
| JP2011202601A | 2011-10-13 | |||
| JPH03288068A | 1991-12-18 |
Foreign References:
| US20130189087A1 | 2013-07-25 |
Attorney, Agent or Firm:
Seishin ip patent business corporation