EP1253293A2 - Befestigung einer Laufschaufel am Rotor einer Turbomaschine - Google Patents
Befestigung einer Laufschaufel am Rotor einer Turbomaschine Download PDFInfo
- Publication number
- EP1253293A2 EP1253293A2 EP02405278A EP02405278A EP1253293A2 EP 1253293 A2 EP1253293 A2 EP 1253293A2 EP 02405278 A EP02405278 A EP 02405278A EP 02405278 A EP02405278 A EP 02405278A EP 1253293 A2 EP1253293 A2 EP 1253293A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- rotor
- circumferential groove
- blade
- blade root
- platform
- 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.)
- Withdrawn
Links
Images
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
-
- 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
- F01D5/3023—Fixing blades to rotors; Blade roots ; Blade spacers of radial insertion type, e.g. in individual recesses
- F01D5/303—Fixing blades to rotors; Blade roots ; Blade spacers of radial insertion type, e.g. in individual recesses in a circumferential slot
- F01D5/3038—Fixing blades to rotors; Blade roots ; Blade spacers of radial insertion type, e.g. in individual recesses in a circumferential slot the slot having inwardly directed abutment faces on both sides
Definitions
- the invention relates to a device for fastening a moving blade on the rotor of a thermal turbomachine according to the preamble of the claim 1.
- Rotor blades which are attached in circumferential grooves to rotors of turbomachinery, are suitably dependent on the respective flow conditions position and counter any possible misalignments during the operation of the turbomachinery, but especially against complete detachment reliably secure from the circumferential groove.
- Security measures known per se against individual solving Blades from the circumferential groove generally refer to the reduction the game between two adjacent blade feet within the Circumferential groove in the circumferential direction. For this you use special spacers, which are able to fill in the play remaining in the circumferential direction, the spacers being installed very closely in the remaining gap Need to become.
- Turbine blades designed in this way now occur due to the contact surfaces not oriented parallel to the axis of rotation due to the operating conditions prevailing in a turbomachine, in a force-loaded active connection, so the appearing lead Axial forces along the individual contact surfaces between the adjacent blades to inevitable vibrations within the rotor assembly, through which Corresponding bearings supporting the rotor arrangement are significantly loaded. It is precisely this fact that must be counteracted effectively by taking appropriate measures.
- the invention has for its object a device for attaching a Develop blade of the type described above such that Axial forces caused by thermal tension within the blades on the rotor should be avoided completely. At the same time, care should be taken that individual blades come out due to themselves any gap spaces that may form are completely excluded can.
- the measures to be taken are not intended to be structurally complex or require precautions and in particular retrofitting already allow existing rotor arrangements.
- the device for fastening a rotor blade according to the Preamble of claim 1 formed in that in the area of The circumferential groove of the blade root that is operatively connected to it Contact surfaces are provided, which are oriented parallel to the rotor axis, and rotor blades inserted in the vicinity via the blades oriented parallel to the rotor axis Contact surfaces each within the circumferential groove in a loose force connection to step.
- the idea on which the invention is based to avoid occurring axial forces on the rotor due to contact surfaces placed obliquely to the rotor axis two neighboring blades is avoiding those very sloping ones Contact surfaces.
- the inventive idea is therefore particularly in the case of blades a large angle of attack compared to the direction of flow in turbomachinery of particular importance, especially since the platforms of such blades not least due to space and weight reasons, they have sloping side flanks, via the immediately adjacent one, which is generally inserted within the circumferential groove Adjacent blades or similarly designed intermediate pieces.
- a base plate for each individual blade introduced radially between the blade root and the rotor within the circumferential groove is and with the respective blade root at least one releasably fixed operative connection received.
- the washer is oriented parallel to the rotor axis Contact surfaces on the side flanks of the platform of the blade in the circumferential direction tower of the rotor. This ensures that two adjacent blades only via their assigned, oriented parallel to the rotor axis Butt the contact surfaces of the respective washers together.
- the releasably strong operative connection between the individual blade feet and the to them associated shims is preferably carried out with a force Bolts, preferably spring-loaded bolts, from the side of the Washer, which in a corresponding recess within the blade root engages, on the one hand, a movement-free fixing of the blade in the circumferential direction is guaranteed, on the other hand, however, enough play between the Rotor and the blade root is present, so that the blade flow within the circumferential groove can largely expand thermally freely. That way you can thermal tension within the blade root seated in the circumferential groove largely avoided.
- a force Bolts preferably spring-loaded bolts
- Fig. 1 shows a plan view of the circumferential groove 1 of a rotor 2 of a thermal Turbo machine, such as a compressor, a gas or steam turbine.
- a thermal Turbo machine such as a compressor, a gas or steam turbine.
- Blade 3 within the Circumferential groove 2 is only one for the sake of a clearer representation Blade 3 (middle position) with a rhombic platform 31 and an airfoil 32 positioned at an angle ⁇ .
- the side flanks 33, 34 of the platform 31 are largely in the illustrated embodiment directed parallel to each other and close the same angle of attack ⁇ opposite of the coparallel to the axis of rotation 4, shown in dashed lines.
- the airfoil 32 in its Radial extension is limited, i.e. the blade tip 35 has a larger angle of attack ⁇ than the airfoil area near the platform 31 on.
- the blade root is in accordance with the plan view Fig. 1 is completely covered by the platform 31, in engagement with one within the Circumferential groove 1 incorporated retaining contour, which in detail from the cross-sectional view 2 can be seen, which will be discussed in detail becomes.
- a washer 5 Radially under the blade 3 within the circumferential groove 1 is in a washer 5 provided, which are distributed directly in a plurality in the circumferential direction are arranged adjacent to each other.
- the washers 5 each point in parallel to the rotor axis 4 oriented contact surfaces 52.
- Blade 3 shown which is at least releasable via a connecting means is firmly connected to the associated base plate 5.
- the lanyard 6 is chosen such that the rotor blade 3 is securely longitudinally in the circumferential direction is fixed to the circumferential groove 1.
- To a special design of the connecting means 4 is discussed below in FIG. 3.
- the base plates 5, which can each be connected to a moving blade 3, are in accordance with 1 preferably in the form of an inclined "H" and have a central connecting web 51 in which the corresponding Connection means 6 can be integrated.
- the circumferential to the circumferential groove 1 directed side legs each end in areas parallel to the rotor axis 4 oriented contact surfaces 52, all of which are the rotor blade 3 in radial Protrude projection, which ensures that two in the circumferential groove 1 Adjacent blades preferably exclusively each over the Touch contact surfaces 52 with force.
- FIG. 2 shows a sectional view along the section line A-A according to FIG. 1.
- This The blade 5 assigned to the moving blade 3 is located in an intermediate gap 7 between the blade root 36 and the rotor 2.
- the platform 31 are removed, the top is flush with the top of the rotor.
- a spring-loaded bolt 7 is provided, through which the Blade 3 is fixed relative to the base plate 5.
- FIG. 3 A corresponding cross-sectional representation of the connecting means 6 is shown in FIG. 3 shown.
- the washer 5 is an interference fit with a sleeve 62, within which a spring element 63 is provided, which has a pin 61 can drive vertically upwards.
- the bolt 61 and the sleeve 62 protrude in Compound with the rotor blade 3 in a corresponding recess 64 within of the blade root 36.
- At least one intermediate piece 8 can be inserted as a spacer, which has a blade root as the fastening element, and has a platform that is flush with the rotor 2 and with the Platforms 31 of both adjacent blades 3 completes.
- the measure according to the invention is suitable as Retrofit kit for turbo machines already in operation. It only applies in Area of the blade feet, the axial and possibly the circumferential play through post-processing, for example, by regrinding to enlarge to have enough space to create for inserting the washers.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Turbine Rotor Nozzle Sealing (AREA)
Abstract
Description
- Fig. 1
- eine Draufsicht auf eine, in eine Umfangsnut eingefügte Laufschaufel mit zwei benachbart angeordneten Unterlegplatten zeigt,
- Fig. 2
- eine Querschnittsdarstellung gemäß Schnittlinie in Fig. 1 darstellt, sowie
- Fig. 3
- eine Detaildarstellung bezüglich der Verbindung zwischen Unterlegplatte und Schaufelfuß zeigt.
- 1
- Umfangsnut
- 2
- Rotor
- 3
- Laufschaufel
- 31
- Plattform
- 32
- Schaufelblatt
- 33, 34
- Seitenflanken
- 35
- Schaufelblattspitze
- 36
- Schaufelfuß
- 4
- Rotorachse
- 5
- Unterlegplatte
- 51
- Verbindungssteg
- 52
- Anlageflächen
- 6
- Verbindungsmittel
- 61
- Bolzen
- 62
- Hülse
- 63
- Federelement
- 64
- Ausnehmung
- 7
- Zwischenspalt
- 8
- Zwischenstück
Claims (10)
- Vorrichtung zur Befestigung von Laufschaufeln (3) längs einer innerhalb eines Rotors (2) einer thermischen Turbomaschine verlaufenden Umfangsnut (1), bei derdadurch gekennzeichnet, dassdie Laufschaufeln (3) einen Schaufelfuss (36), ein Schaufelblatt (32), sowie eine zwischen dem Schaufelfuss (36) und dem Schaufelblatt (32) angeordnete Plattform (31) mit wenigstens zwei Seitenflanken (33, 34) aufweist,die Umfangsnut (1) eine zur Aufnahme der Schaufelfüsse (36) ausgebildete Innenkontur vorsieht, unddie Seitenflanken (33, 34) der Plattform (31) der sich in der Umfangsnut befindenden Laufschaufeln (3) schräg zur Rotorachse (4) geneigt sind,im Bereich des in die Umfangsnut (1) hineinreichenden Schaufelfusses (36) mit diesem in Wirkverbindung stehende Anlageflächen (52) vorgesehen sind, die parallel zur Rotorachse (4) orientiert sind, undbenachbart eingefügte Laufschaufeln (3) über die parallel zur Rotorachse (4) orientierten Anlageflächen (52) jeweils innerhalb der Umfangsnut (1) miteinander in eine lose Kraftverbindung treten.
- Vorrichtung nach Anspruch 1,
dadurch gekennzeichnet, dass
innerhalb der Umfangsnut (1) radial zwischen dem Schaufelfuss (36) und dem Rotor (2) ein Zwischenspalt (7) vorgesehen ist, in dem eine Unterlegplatte (5) eingebracht ist, die die Anlageflächen (52) aufweist, wobei die Unterlegplatte (5) über die zwei Seitenflanken (33, 34) in Umfangsrichtung hinausgeht. - Vorrichtung nach Anspruch 2,
dadurch gekennzeichnet, dass
die Unterlegplatte (5) ein Verbindungsmittel (6) aufweist, durch das die Unterlegplatte (5) mit dem Schaufelfuss (36) lösbar fest verbindbar ist. - Vorrichtung nach Anspruch 3,
dadurch gekennzeichnet, dass
das Verbindungsmittel (6) ein kraftbeaufschlagter Bolzen (61) ist, der von Seiten der Unterlegplatte (5) in eine entsprechend innerhalb des Schaufelfusses (36) vorgesehene Ausnehmung (64) eingreift. - Vorrichtung nach Anspruch 2,
dadurch gekennzeichnet, dass
die Unterlegplatte (5) fest mit dem Schaufelfuss (36) verfügt oder einstückig mit dem Schaufelfuss (36) verbunden ist. - Vorrichtung nach einem der Ansprüche 2 bis 5,
dadurch gekennzeichnet, dass
die Unterlegplatte (5) in Art eines "H" ausgebildet ist, deren Verbindungsschenkel (51) weitgehend parallel zu den Seitenflanken (33, 34) der Plattform (31) orientiert ist und vier parallel zur Rotorachse (4) ausgerichtete Anlageflächen (52) aufweist. - Vorrichtung nach einem der Ansprüche 1 bis 6,
dadurch gekennzeichnet, dass
die radial zum Schaufelblatt (32) gerichtete Oberfläche der Plattform (31) im verfügten Zustand der Laufschaufel (3) mit dem Rotor (2) bündig mit diesem abschließt. - Vorrichtung nach einem der Ansprüche 1 bis 7,
dadurch gekennzeichnet, dass
zwischen zwei benachbarten Laufschaufeln (3) ein bündig mit dem Rotor (2) abschließendes Zwischenstück in die Umfangsnut (1) eingefügt ist, das sich weitgehend kraftlos an die Seitenflanken (33, 34) der Plattform (31) beiden der benachbarten Laufschaufeln (3) anschmiegt. - Vorrichtung nach einem der Ansprüche 1 bis 8,
dadurch gekennzeichnet, dass
die Plattform (31) eine rhombisch ausgebildete Form aufweist, bei der sich die Seitenflanken (33, 34) längs der Breite des Schaufelblattes (32) erstrecken. - Vorrichtung nach einem der Ansprüche 1 bis 9,
dadurch gekennzeichnet, dass
zwischen zwei benachbarten Laufschaufeln (3) innerhalb der Umfangsnut (1) wenigstens ein Zwischenstück eingefügt ist, das einen Schaufelfusses (36), sowie eine Plattform (31) aufweist, die bündig mit dem Rotor (2) sowie mit den Plattformen (31) beider benachbarter Laufschaufeln (3) abschließt.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE10120532A DE10120532A1 (de) | 2001-04-26 | 2001-04-26 | Vorrichtung und Verfahren zur Befestigung einer Laufschaufel längs einer innerhalb eines Rotors einer axial durchströmten Turbomaschine verlaufenden Umfangsnut |
| DE10120532 | 2001-04-26 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP1253293A2 true EP1253293A2 (de) | 2002-10-30 |
| EP1253293A3 EP1253293A3 (de) | 2004-09-29 |
Family
ID=7682853
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP02405278A Withdrawn EP1253293A3 (de) | 2001-04-26 | 2002-04-09 | Befestigung einer Laufschaufel am Rotor einer Turbomaschine |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US20020182081A1 (de) |
| EP (1) | EP1253293A3 (de) |
| JP (1) | JP2002332802A (de) |
| DE (1) | DE10120532A1 (de) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2320030A1 (de) * | 2009-11-10 | 2011-05-11 | Alstom Technology Ltd | Rotor mit Laufschaufel für eine axial durchströmte Turbomaschine |
| CH702203A1 (de) * | 2009-11-10 | 2011-05-13 | Alstom Technology Ltd | Rotor für eine axial durchströmte turbomaschine sowie laufschaufel für einen solchen rotor. |
| WO2014016431A1 (de) * | 2012-07-27 | 2014-01-30 | Siemens Aktiengesellschaft | Schaufelkranz für eine turbomaschine |
| CN109366403A (zh) * | 2018-12-10 | 2019-02-22 | 无锡透平叶片有限公司 | 用于菌型叶片模拟装配的装置 |
| EP4209658A1 (de) * | 2022-01-05 | 2023-07-12 | General Electric Company | Verdichterkomponente mit rückhaltefeder |
| RU2838115C1 (ru) * | 2024-10-01 | 2025-04-11 | Акционерное общество "Силовые машины - ЗТЛ, ЛМЗ, Электросила, Энергомашэкспорт"(АО "Силовые машины") | Крепление рабочих лопаток на диске ротора осевой турбомашины |
Families Citing this family (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10357134A1 (de) * | 2003-12-06 | 2005-06-30 | Alstom Technology Ltd | Rotor für einen Verdichter |
| JP2005273646A (ja) | 2004-02-25 | 2005-10-06 | Mitsubishi Heavy Ind Ltd | 動翼体及びこの動翼体を有する回転機械 |
| DE502004006777D1 (de) * | 2004-07-22 | 2008-05-21 | Siemens Ag | Sicherungsvorrichtung für eine an einer drehbaren Rotorscheibe angeordneten Laufschaufel einer Strömungsmaschine, Strömungsmaschine und Verfahren zur Montage und Demontage einer Laufschaufel an einer Rotorscheibe einer Strömungsmaschine |
| US20060251522A1 (en) * | 2005-05-05 | 2006-11-09 | Matheny Alfred P | Curved blade and vane attachment |
| EP1892380A1 (de) | 2006-08-25 | 2008-02-27 | Siemens Aktiengesellschaft | Schaufelbefestigung einer Turbine |
| US9890648B2 (en) * | 2012-01-05 | 2018-02-13 | General Electric Company | Turbine rotor rim seal axial retention assembly |
| US20140199172A1 (en) * | 2013-01-11 | 2014-07-17 | General Electric Company | Turbomachine and method of handling turbomachine components |
| CN112855282B (zh) * | 2021-03-01 | 2022-04-12 | 杭州汽轮机股份有限公司 | 一种工业汽轮机调节级锥销装配过盈量控制方法 |
| FR3126449B1 (fr) * | 2021-09-01 | 2024-07-19 | Safran Aircraft Engines | Clinquant pour aube mobile de turbomachine et ensemble pour rotor comportant un tel clinquant |
| CN114837993A (zh) * | 2022-05-23 | 2022-08-02 | 安徽朗迪叶轮机械有限公司 | 一种双层式轴流风叶 |
| US12221899B2 (en) * | 2023-06-15 | 2025-02-11 | General Electric Company | Methods and apparatuses for blade locking |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| NL252407A (de) * | 1960-05-09 | 1900-01-01 | ||
| US3252687A (en) * | 1965-02-01 | 1966-05-24 | Gen Motors Corp | Rotor blade locking |
| CH494341A (de) * | 1968-07-26 | 1970-07-31 | Sulzer Ag | Rotor für Turbomaschinen |
| US3841792A (en) * | 1973-03-09 | 1974-10-15 | Westinghouse Electric Corp | Turbomachine blade lock and seal device |
| US4688992A (en) * | 1985-01-25 | 1987-08-25 | General Electric Company | Blade platform |
| GB2171150B (en) * | 1985-02-12 | 1989-07-26 | Rolls Royce Plc | Bladed rotor assembly for a turbomachine |
| FR2616480B1 (fr) * | 1987-06-10 | 1989-09-29 | Snecma | Dispositif de verrouillage d'aubes a pied marteau sur un disque de turbomachine et procedes de montage et de demontage |
| FR2776012B1 (fr) * | 1998-03-12 | 2000-04-07 | Snecma | Joint d'etancheite d'un etage d'aubes circulaire |
-
2001
- 2001-04-26 DE DE10120532A patent/DE10120532A1/de not_active Withdrawn
-
2002
- 2002-04-09 EP EP02405278A patent/EP1253293A3/de not_active Withdrawn
- 2002-04-18 US US10/124,428 patent/US20020182081A1/en not_active Abandoned
- 2002-04-26 JP JP2002127030A patent/JP2002332802A/ja not_active Withdrawn
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2320030A1 (de) * | 2009-11-10 | 2011-05-11 | Alstom Technology Ltd | Rotor mit Laufschaufel für eine axial durchströmte Turbomaschine |
| CH702203A1 (de) * | 2009-11-10 | 2011-05-13 | Alstom Technology Ltd | Rotor für eine axial durchströmte turbomaschine sowie laufschaufel für einen solchen rotor. |
| US8770938B2 (en) | 2009-11-10 | 2014-07-08 | Alstom Technology Ltd | Rotor for an axial-throughflow turbomachine and moving blade for such a rotor |
| WO2014016431A1 (de) * | 2012-07-27 | 2014-01-30 | Siemens Aktiengesellschaft | Schaufelkranz für eine turbomaschine |
| CN104508248A (zh) * | 2012-07-27 | 2015-04-08 | 西门子公司 | 用于涡轮机的叶片环 |
| CN104508248B (zh) * | 2012-07-27 | 2016-08-17 | 西门子公司 | 用于涡轮机的叶片环和用于固定式燃气轮机的压缩机 |
| CN109366403A (zh) * | 2018-12-10 | 2019-02-22 | 无锡透平叶片有限公司 | 用于菌型叶片模拟装配的装置 |
| CN109366403B (zh) * | 2018-12-10 | 2023-09-22 | 无锡透平叶片有限公司 | 用于菌型叶片模拟装配的装置 |
| EP4209658A1 (de) * | 2022-01-05 | 2023-07-12 | General Electric Company | Verdichterkomponente mit rückhaltefeder |
| RU2838115C1 (ru) * | 2024-10-01 | 2025-04-11 | Акционерное общество "Силовые машины - ЗТЛ, ЛМЗ, Электросила, Энергомашэкспорт"(АО "Силовые машины") | Крепление рабочих лопаток на диске ротора осевой турбомашины |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2002332802A (ja) | 2002-11-22 |
| US20020182081A1 (en) | 2002-12-05 |
| DE10120532A1 (de) | 2002-10-31 |
| EP1253293A3 (de) | 2004-09-29 |
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