[특허]Device for axial securing of blade feet of a gas turbine disk

[미국특허] Device for axial securing of blade feet of a gas turbine disk 원문보기

IPC분류정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	F01D-005/32
출원번호	US-0482871 (1983-04-07)
우선권정보	FR-0006118 (1982-04-08)
발명자 / 주소	Rigo Marcel L. A. (Paray Vieille Poste FRX) Sourdeval Gilbert (Vert Saint Denis FRX)
출원인 / 주소	S.N.E.C.M.A. (Paris FRX 03)
인용정보	피인용 횟수 : 22 인용 특허 : 3

초록 ▼

The device has two ring segments (13) held in a circumferential score (11) provided in one edge of the upper surface (8) of the rotor disk. These ring segments consist of a portion of a cylindrical band (17) on whose edges are provided two collars (18, 19) of unequal thickness. The thicker collar (18) is placed between the upper wall of the transverse score (7) made in the projection (6) and the upper wall (8) of the rotor (1). The cylindrical band (17) works in conjunction with the bottom of the circumferential score (11). The thinnest collar (19) leans against the upper wall of the groove. The two segments placed end to end leave between them a space corresponding to the width of one axial notch. By displacing the ring segments in the score, the space is brought opposite the blade to be changed. The locking ring has two pins (21) which engage between the ends of the ring segments and block them in position. Other types of applications are described.

대표청구항 ▼

A gas turbine having an axial securing device for the roots of the blades of the rotor disc of the gas turbine which permits the blades to be readily disengaged from the rotor disc, said gas turbine comprising: (a) a rotor disc having an upstream front face, a downstream rear face, a radially outer rim, a plurality of axial notches in the radially outer rim, an axially projecting flange on the upstream front face, and a circumferential, radially outwardly open score on the radially outward surface of said axially projecting flange; (b) a front cowl removably fitted on the upstream front face of said rotor disc; (c) a plurality of rotor blades, each of said plurality of rotor blades having a blade root which is axially slidably disposed in a corresponding one of said plurality of axial notches and a project which extends axially forwardly and radially inwardly from the upsteam front face of the associated one of said plurality of rotor blades; (d) at least two ring segments slidably disposed in said circumferential score and circumferentially movable therein, said ring segments having a radially outwardly projecting collar which extends radially outwardly farther than said plurality of projections extend radially inwardly, said ring segments and said circumferential score being positioned such that the front surface of said radially outwardly projecting collars abut against the rear surfaces of said plurality of projections, thereby preventing rearward axial movement of said rotor blades, when said ring segments and said projections are circumferentially aligned, the sum of the lengths of said ring segments being less by at least the circumferential width of one of said axial notches than the circumference of said circumferential score, whereby said ring segments can be slid into a position in said circumferential score permitting at least one of said rotor blades to be disengaged from said rotor disc; and (e) a locking element carried by the downstream rear face of said front cowl, said locking element selectively engaging said ring semgents to prevent circumferential movement thereof and to circumferentially fix said ring segments in position to engage said plurality of projections, thereby preventing rearward axial movement of said rotor blades.

이 특허에 인용된 특허 (3) 인용/피인용 타임라인 분석

Libertini Zoltan L. (Stamford CT) Ivanko Theodore (Fairfield CT), Boltless blade retainer for a turbine wheel.
상세보기
Tucker James W. (Cincinnati OH) Bobinger Robert O. (Cincinnati OH), Device for locking turbomachinery blades.
상세보기
Surdi Jean M. (Melun FRX), Device to lock the blades of a turboblower and to fasten the front cowl of a turbojet engine.
상세보기

이 특허를 인용한 특허 (22) 인용/피인용 타임라인 분석

Uskert, Richard Christopher; Harris, Darrell Curtis, Apparatus and method for locking a composite component.
상세보기
Luxenburger Gerd (Munich DEX), Assembly of rotor blades in a rotor disc for a compressor or a turbine.
상세보기
Stapleton, David Scott, Blade skirt.
상세보기
Corsmeier Robert J. (Cincinnati OH) Schlechtweg Ronald E. (Loveland OH) Albrecht ; Jr. Richard W. (Fairfield OH) Dry Dennis P. (Cincinnati OH), Boltless rotor blade retainer.
상세보기
Kalogeros Robert R. (Glastonbury CT), Breach lock anti-rotation key.
상세보기
Surdi Jean M. (Melun FRX), Device for locking a turbine blade to a rotor disk.
상세보기
Fulayter, Roy David; Ong, James, Fan.
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Perdrigeon, Christophe; Jablonski, Laurent; Joly, Philippe Gerard Edmond, Fan rotor and associated turbojet engine.
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Borzakian, Muriel Jane Sylvie; Hugonie, Aymeric, Fan rotor for a turbomachine or a test engine.
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Stone,Paul, Natural frequency tuning of gas turbine engine blades.
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Stuart Lee DE; Peter Broadhead GB; Tim Hopp DE, Retaining arrangement for rotor blades of axial-flow turbomachinery.
상세보기
Glasspoole, David F.; Chatelois, Bruno, Retaining ring arrangement for a rotary assembly.
상세보기
Modafferi Mario (St. Leonard CAX) Juneau Paul A. (St. Leonard CAX), Rotor assembly.
상세보기
Antonellis Stephen M. (Manchester CT), Rotor assembly for a turbomachine.
상세보기
Kisling, Douglas L.; Hill, Edward C.; Delahoussaye, Ronald D., Rotor disk cover plate attachment.
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Gendraud, Alain Dominique; Garin, Fabrice Marcel Noel; Lunel, Romain Nicolas, Rotor wheel for a turbine engine.
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Rojas, Hernan Alex, System and method for Var injection at a distributed power generation source.
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Tyler, Peter Michael, Testing of a transient voltage protection device.
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Bluck, Richard; Charlton, Scott, Turbine blade assembly.
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Roman-Morales, Felipe; Jacala, Ariel Caesar Prepena; Xu, Liming; Myers, Melbourne James; Bruce, Kevin Leon; Ammann, Luke John, Turbine bucket lockwire rotation prevention.
상세보기
Jablonski, Laurent, Turbine engine fan disk.
상세보기
Mazzola Stefan ; Hultgren Kent Goran, Turbine vane clocking mechanism and method of assembling a turbine having such a mechanism.
상세보기

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IPC	Description
A	생활필수품
A62	인명구조; 소방(사다리 E06C)
A62B	인명구조용의 기구, 장치 또는 방법(특히 의료용에 사용되는 밸브 A61M 39/00; 특히 물에서 쓰이는 인명구조 장치 또는 방법 B63C 9/00; 잠수장비 B63C 11/00; 특히 항공기에 쓰는 것, 예. 낙하산, 투출좌석 B64D; 특히 광산에서 쓰이는 구조장치 E21F 11/00)
A62B-1/08	.. 윈치 또는 풀리에 제동기구가 있는 것

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[미국특허] Device for axial securing of blade feet of a gas turbine disk 원문보기