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Patent Searching and Data


Title:
Steam turbine Stator vane and a steam turbine
Document Type and Number:
Japanese Patent JP5968173
Kind Code:
B2
Abstract:
Aplurality of slots (10, 11, 12, 13) with different widths are provided in a plurality of line on a stationary blade surface. More specifically, the steam turbine stationary blade (1) has a hollow nozzle with a penetrating space, which is connected with a diaphragm outer ring (2) or inner ring (3), and a plurality of suction slots (10, 11, 12, 13) extending radially which are arranged on the blade surface. At a position where a water film deposited to the blade surface is thick, the width of a slot (10, 12) is smaller and at a position where the water film is thin, the width of a slot (11, 13) is larger.

Inventors:
Koji Ishibashi
Nakano Shin
Shunsuke Mizumi
Ken Kudo
Application Number:
JP2012202139A
Publication Date:
August 10, 2016
Filing Date:
September 14, 2012
Export Citation:
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Assignee:
Mitsubishi Hitachi Power Systems, Ltd.
International Classes:
F01D9/02; F01D25/32
Domestic Patent References:
JP51020322Y1
JP60073801U
JP5106405A
JP6248903A
JP4194302A
JP1110812A
JP3047403A
JP11336503A
Attorney, Agent or Firm:
Polaire Patent Service Corporation