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JPS57122102A - Attaching and fixing structure of rotor blade - Google Patents

Attaching and fixing structure of rotor blade

Info

Publication number
JPS57122102A
JPS57122102A JP641581A JP641581A JPS57122102A JP S57122102 A JPS57122102 A JP S57122102A JP 641581 A JP641581 A JP 641581A JP 641581 A JP641581 A JP 641581A JP S57122102 A JPS57122102 A JP S57122102A
Authority
JP
Japan
Prior art keywords
blade
dovetail
rotor
groove
ring
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
JP641581A
Other languages
Japanese (ja)
Inventor
Toshio Hattori
Mitsuo Yoneyama
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 JP641581A priority Critical patent/JPS57122102A/en
Publication of JPS57122102A publication Critical patent/JPS57122102A/en
Pending legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
    • F01D5/00—Blades; Blade-carrying members; Heating, heat-insulating, cooling or antivibration means on the blades or the members
    • F01D5/30—Fixing blades to rotors; Blade roots ; Blade spacers
    • F01D5/32—Locking, e.g. by final locking blades or keys
    • F01D5/326—Locking of axial insertion type blades by other means

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Turbine Rotor Nozzle Sealing (AREA)

Abstract

PURPOSE:To make sure axial-fixing of a rotor blade and decrease stress amplitude on a grooved portion by fitting an elastic material under compressed condition in a space between a dovetail of a blade and the groove of a rotor incase of such an unit in which the dovetail is fitted into the groove to fix the blade to the rotor. CONSTITUTION:A blade 1 is fixed to a rotor 3 by fitting dovetail 2 of the blade 1 into a groove 6 of the rotor 3. Then an elastic material, for example, an oval ring 7 is compressed and inserted between the dovetail 2 and the groove 6. In order to insert the oval ring 7, first the portions of the ring 7 along its long axis direction is fitted into the long axis directional portions of an oval groove 8 formed in the dovetail 2, the oval ring 7 is turned by 90 deg. with a jig to be inserted into a fitting groove 7a formed on an inner face of the ring 7, and its ends along the long axis direction of the oval ring 7 are fitted securely into a dovetail side fixing dent 8a and a rotor side fixing dent 3a. Accordingly, the axial direction firm fixing of the blade 1 can be obtained and the stress amplitude applied to the grooved portion 6 at the times of starting and stopping can be decreased.
JP641581A 1981-01-21 1981-01-21 Attaching and fixing structure of rotor blade Pending JPS57122102A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP641581A JPS57122102A (en) 1981-01-21 1981-01-21 Attaching and fixing structure of rotor blade

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP641581A JPS57122102A (en) 1981-01-21 1981-01-21 Attaching and fixing structure of rotor blade

Publications (1)

Publication Number Publication Date
JPS57122102A true JPS57122102A (en) 1982-07-29

Family

ID=11637731

Family Applications (1)

Application Number Title Priority Date Filing Date
JP641581A Pending JPS57122102A (en) 1981-01-21 1981-01-21 Attaching and fixing structure of rotor blade

Country Status (1)

Country Link
JP (1) JPS57122102A (en)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59229002A (en) * 1983-04-14 1984-12-22 ゼネラル・エレクトリツク・カンパニイ Rotary parts
JPS63227905A (en) * 1987-02-24 1988-09-22 ウエスチングハウス・エレクトリック・コーポレーション Method of assembling steam turbine and rocking preventive device for blade root section thereof
JPS63227906A (en) * 1987-02-24 1988-09-22 ウエスチングハウス・エレクトリック・コーポレーション Assembly method and device for steam turbine reducing relative motion
JPH02112602A (en) * 1988-09-14 1990-04-25 Westinghouse Electric Corp <We> Device for giving preload
FR2881174A1 (en) * 2005-01-27 2006-07-28 Snecma Moteurs Sa DEVICE FOR POSITIONING A DASHBOARD AND AUBAGE DISK COMPRISING SUCH A DEVICE
GB2472572A (en) * 2009-08-10 2011-02-16 Rolls Royce Plc Mounting for aerofoil blade using elastomeric bush
JP2014527594A (en) * 2011-08-24 2014-10-16 シーメンス アクティエンゲゼルシャフト Wing structure

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59229002A (en) * 1983-04-14 1984-12-22 ゼネラル・エレクトリツク・カンパニイ Rotary parts
JPH0423085B2 (en) * 1983-04-14 1992-04-21 Gen Electric
JPS63227905A (en) * 1987-02-24 1988-09-22 ウエスチングハウス・エレクトリック・コーポレーション Method of assembling steam turbine and rocking preventive device for blade root section thereof
JPS63227906A (en) * 1987-02-24 1988-09-22 ウエスチングハウス・エレクトリック・コーポレーション Assembly method and device for steam turbine reducing relative motion
JPH02112602A (en) * 1988-09-14 1990-04-25 Westinghouse Electric Corp <We> Device for giving preload
FR2881174A1 (en) * 2005-01-27 2006-07-28 Snecma Moteurs Sa DEVICE FOR POSITIONING A DASHBOARD AND AUBAGE DISK COMPRISING SUCH A DEVICE
US7334996B2 (en) 2005-01-27 2008-02-26 Snecma Device for the positioning of a blade and bladed disk comprising such a device
GB2472572A (en) * 2009-08-10 2011-02-16 Rolls Royce Plc Mounting for aerofoil blade using elastomeric bush
JP2014527594A (en) * 2011-08-24 2014-10-16 シーメンス アクティエンゲゼルシャフト Wing structure

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