JPS54103910A - Seal structure for tips of moving vanes of axial-flow machine - Google Patents
Seal structure for tips of moving vanes of axial-flow machineInfo
- Publication number
- JPS54103910A JPS54103910A JP930178A JP930178A JPS54103910A JP S54103910 A JPS54103910 A JP S54103910A JP 930178 A JP930178 A JP 930178A JP 930178 A JP930178 A JP 930178A JP S54103910 A JPS54103910 A JP S54103910A
- Authority
- JP
- Japan
- Prior art keywords
- leakage
- pieces
- axial
- circumferential
- stream
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/08—Sealings
- F04D29/16—Sealings between pressure and suction sides
- F04D29/161—Sealings between pressure and suction sides especially adapted for elastic fluid pumps
- F04D29/164—Sealings between pressure and suction sides especially adapted for elastic fluid pumps of an axial flow wheel
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Turbine Rotor Nozzle Sealing (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
PURPOSE:To improve the stage head performance, by providing numerous antileakage pieces continually in the circumferential direction between radial fins mounted in two or four lines in the axial direction to reduce the circumferential movement of vortex and increase the number of times of leakage flow restriction. CONSTITUTION:A circumferential leakage flow preventer 33 consists of anti-leakge piece fitting plates 34 fixed in diaphragm walls 3 and having an axial length of l in the axial length L of radial fins 6a, 6b and the anti-leakage pieces 35 perpendicularly fixed to the fitting pieces. Leakage stream 53 branching from the main stage fall stream flows in at an incident angle of theta1 to the direction perpendicular to the turbine axis and is sequentially constricted at a point X1 on the radial fin 6a and then at points X2, X3, X4 by the anti-leakage pieces 35 provided continually in the circumferential direction. The leaking stream is finally constricted at a point X5 on the radial fin 6b. Therefore, the effect of leakage prevention is heightened.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP930178A JPS54103910A (en) | 1978-02-01 | 1978-02-01 | Seal structure for tips of moving vanes of axial-flow machine |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP930178A JPS54103910A (en) | 1978-02-01 | 1978-02-01 | Seal structure for tips of moving vanes of axial-flow machine |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS54103910A true JPS54103910A (en) | 1979-08-15 |
Family
ID=11716642
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP930178A Pending JPS54103910A (en) | 1978-02-01 | 1978-02-01 | Seal structure for tips of moving vanes of axial-flow machine |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS54103910A (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5088889A (en) * | 1985-02-16 | 1992-02-18 | Mtu Motoren-Und Turbinen-Union Muenchen Gmbh | Seal for a flow machine |
JP2011106428A (en) * | 2009-11-20 | 2011-06-02 | Breeze Echo:Kk | Axial flow type blower and pump, and oblique flow type blower and pump |
US20130142641A1 (en) * | 2011-12-05 | 2013-06-06 | Nuovo Pignone S.P.A. | Turbomachine |
WO2014162767A1 (en) * | 2013-04-03 | 2014-10-09 | 三菱重工業株式会社 | Rotating machine |
-
1978
- 1978-02-01 JP JP930178A patent/JPS54103910A/en active Pending
Cited By (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5088889A (en) * | 1985-02-16 | 1992-02-18 | Mtu Motoren-Und Turbinen-Union Muenchen Gmbh | Seal for a flow machine |
JP2011106428A (en) * | 2009-11-20 | 2011-06-02 | Breeze Echo:Kk | Axial flow type blower and pump, and oblique flow type blower and pump |
US20130142641A1 (en) * | 2011-12-05 | 2013-06-06 | Nuovo Pignone S.P.A. | Turbomachine |
US9470101B2 (en) * | 2011-12-05 | 2016-10-18 | Nuovo Pignone S.P.A. | Turbomachine |
WO2014162767A1 (en) * | 2013-04-03 | 2014-10-09 | 三菱重工業株式会社 | Rotating machine |
KR20150114964A (en) * | 2013-04-03 | 2015-10-13 | 미츠비시 쥬고교 가부시키가이샤 | Rotating machine |
CN105074134A (en) * | 2013-04-03 | 2015-11-18 | 三菱重工业株式会社 | Rotating machine |
JP5951890B2 (en) * | 2013-04-03 | 2016-07-13 | 三菱重工業株式会社 | Rotating machine |
JPWO2014162767A1 (en) * | 2013-04-03 | 2017-02-16 | 三菱重工業株式会社 | Rotating machine |
US10247025B2 (en) | 2013-04-03 | 2019-04-02 | Mitsubishi Heavy Industries, Ltd. | Rotating machine |
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