JPS572405A - Rotary blade connector of axial-flow rotary machine - Google Patents

Rotary blade connector of axial-flow rotary machine

Info

Publication number
JPS572405A
JPS572405A JP7581980A JP7581980A JPS572405A JP S572405 A JPS572405 A JP S572405A JP 7581980 A JP7581980 A JP 7581980A JP 7581980 A JP7581980 A JP 7581980A JP S572405 A JPS572405 A JP S572405A
Authority
JP
Japan
Prior art keywords
hole
blades
connecting piece
projections
projection
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
JP7581980A
Other languages
Japanese (ja)
Inventor
Kiyoshi Namura
Katsukuni Kuno
Akira Uenishi
Kazuo Ikeuchi
Makoto Nishimura
Hajime Shibaoka
Akira Ishida
Katsumi Oyabu
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 JP7581980A priority Critical patent/JPS572405A/en
Publication of JPS572405A publication Critical patent/JPS572405A/en
Pending legal-status Critical Current

Links

Landscapes

  • Turbine Rotor Nozzle Sealing (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)

Abstract

PURPOSE: To improve vibration damping effect and maintain good connecting conditions in turbine blade connecting area by providing projections formed on both back and front sides of a blade face with connecting pieces brought in close contact to each other due to an untwist of rotary blades during their rotation.
CONSTITUTION: Adjacent blades 1a, 1b are provided with projections 3a, 3b extending from suction sides of the blades as well as projections 4a, 4b extending from pressure sides. A hole 5 made at the top of each projection extends in the longitudinal direction of the projection and one connecting piece 12 is inserted in each hole 5. The connecting piece 12 is shaped so as not to rotate in the hole 5 and its vizor 17 is provided with a tapered face 18. Although a couple of forces 21, which produces untwist of blades by a centrifugal force works on blades during their rotation, vibrations are damped by frictional forces between tapered faces 18 between vizor 17 and projection end faces 11, and between connecting piece jaw 15 and hole jaw 8.
COPYRIGHT: (C)1982,JPO&Japio
JP7581980A 1980-06-05 1980-06-05 Rotary blade connector of axial-flow rotary machine Pending JPS572405A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7581980A JPS572405A (en) 1980-06-05 1980-06-05 Rotary blade connector of axial-flow rotary machine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7581980A JPS572405A (en) 1980-06-05 1980-06-05 Rotary blade connector of axial-flow rotary machine

Publications (1)

Publication Number Publication Date
JPS572405A true JPS572405A (en) 1982-01-07

Family

ID=13587166

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7581980A Pending JPS572405A (en) 1980-06-05 1980-06-05 Rotary blade connector of axial-flow rotary machine

Country Status (1)

Country Link
JP (1) JPS572405A (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3517283A1 (en) * 1985-05-14 1986-11-20 MAN Gutehoffnungshütte GmbH, 4200 Oberhausen BINDING BLADES OF A THERMAL TURBO MACHINE
CN100374688C (en) * 2003-09-12 2008-03-12 阿尔斯通技术有限公司 Blade to blade connection in a turbomachine
US20110274549A1 (en) * 2010-05-06 2011-11-10 General Electric Company Blade having asymmetrical mid-span structure portions and related bladed wheel structure
ITMI20120527A1 (en) * 2012-03-30 2013-10-01 Franco Tosi Meccanica S P A ROTORIAL STAGE OF AXIAL TURBINE WITH ADAPTIVE ADJUSTMENT TO DYNAMIC STRESS
WO2015044699A1 (en) * 2013-09-26 2015-04-02 Franco Tosi Meccanica S.P.A. Rotor stage of axial turbine with an adaptive regulation to dynamic stresses
JP2018128008A (en) * 2017-01-03 2018-08-16 ゼネラル・エレクトリック・カンパニイ Damping inserts and methods for shrouded turbine blades

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3517283A1 (en) * 1985-05-14 1986-11-20 MAN Gutehoffnungshütte GmbH, 4200 Oberhausen BINDING BLADES OF A THERMAL TURBO MACHINE
DE3517283C2 (en) * 1985-05-14 1988-05-19 Man Gutehoffnungshuette Gmbh, 4200 Oberhausen, De
CN100374688C (en) * 2003-09-12 2008-03-12 阿尔斯通技术有限公司 Blade to blade connection in a turbomachine
US20110274549A1 (en) * 2010-05-06 2011-11-10 General Electric Company Blade having asymmetrical mid-span structure portions and related bladed wheel structure
ITMI20120527A1 (en) * 2012-03-30 2013-10-01 Franco Tosi Meccanica S P A ROTORIAL STAGE OF AXIAL TURBINE WITH ADAPTIVE ADJUSTMENT TO DYNAMIC STRESS
WO2015044699A1 (en) * 2013-09-26 2015-04-02 Franco Tosi Meccanica S.P.A. Rotor stage of axial turbine with an adaptive regulation to dynamic stresses
JP2018128008A (en) * 2017-01-03 2018-08-16 ゼネラル・エレクトリック・カンパニイ Damping inserts and methods for shrouded turbine blades

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