AXIAL FLOW ROTARY MACHINE - MITSUBISHI HEAVY IND LTD

Title:

AXIAL FLOW ROTARY MACHINE

Document Type and Number:

WIPO Patent Application WO/2019/151221

Kind Code:

A1

Abstract:

This axial flow rotary machine is provided with: a rotor; a casing; a movable blade stage including a movable blade and an outer circumferential-side blade ring connected to an outer circumferential-side end of the movable blade; and a movable blade-side seal device that seals the gap between the outer circumferential-side movable blade ring and the casing. The movable blade-side seal device includes: an annular seal fin extending from the casing toward the outer circumferential surface of the outer circumferential surface-side movable ring; and a swirl breaker which, in a cavity formed on the upstream side of the seal fin, is fixed to the casing. The swirl breaker includes: a first plate-shaped member having a surface along a radial direction of the rotor; and a second plate-shaped member or third plate-shaped member having a surface inclined with respect to the radial direction of the rotor, wherein the second plate-shaped member extends from the inner side end of the first plate-shaped member toward the downstream side of the rotation direction of the rotor, and the third plate-shaped member extends from the inner side end of the first plate-shaped member toward the upstream side of the rotation direction of the rotor.

Inventors:

KAWASHITA RIMPEI (JP)
IWASAKI MAKOTO (JP)
KAMISHITA MAKOTO (JP)
MATSUMOTO KAZUYUKI (JP)

Application Number:

PCT/JP2019/002908

Publication Date:

August 08, 2019

Filing Date:

January 29, 2019

Export Citation:

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Assignee:

MITSUBISHI HEAVY IND LTD (JP)

International Classes:

F01D11/08; F01D11/02; F02C7/28; F16J15/447

Domestic Patent References:

WO2014162767A1

2014-10-09

Foreign References:

JP2007120476A	2007-05-17
JP2017145813A	2017-08-24
US5439347A	1995-08-08
US4420161A	1983-12-13

Other References: