JPS54103910A - Seal structure for tips of moving vanes of axial-flow machine - Google Patents

Seal structure for tips of moving vanes of axial-flow machine

Info

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
Application number
JP930178A
Other languages
Japanese (ja)
Inventor
Norio Yasugadaira
Takeshi Sato
Kuniyoshi Tsubouchi
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hitachi Ltd
Original Assignee
Hitachi Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP930178A priority Critical patent/JPS54103910A/en
Publication of JPS54103910A publication Critical patent/JPS54103910A/en
Pending legal-status Critical Current

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.
JP930178A 1978-02-01 1978-02-01 Seal structure for tips of moving vanes of axial-flow machine Pending JPS54103910A (en)

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)

* Cited by examiner, † Cited by third party
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

Cited By (10)

* Cited by examiner, † Cited by third party
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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