CH363661A - Connection between two ring-shaped machine elements - Google Patents
Connection between two ring-shaped machine elementsInfo
- Publication number
- CH363661A CH363661A CH5589558A CH5589558A CH363661A CH 363661 A CH363661 A CH 363661A CH 5589558 A CH5589558 A CH 5589558A CH 5589558 A CH5589558 A CH 5589558A CH 363661 A CH363661 A CH 363661A
- Authority
- CH
- Switzerland
- Prior art keywords
- connection
- ring
- opening
- machine elements
- pin
- Prior art date
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
- F01D5/02—Blade-carrying members, e.g. rotors
- F01D5/06—Rotors for more than one axial stage, e.g. of drum or multiple disc type; Details thereof, e.g. shafts, shaft connections
- F01D5/066—Connecting means for joining rotor-discs or rotor-elements together, e.g. by a central bolt, by clamps
-
- 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
- F01D17/00—Regulating or controlling by varying flow
- F01D17/10—Final actuators
- F01D17/12—Final actuators arranged in stator parts
- F01D17/14—Final actuators arranged in stator parts varying effective cross-sectional area of nozzles or guide conduits
- F01D17/16—Final actuators arranged in stator parts varying effective cross-sectional area of nozzles or guide conduits by means of nozzle vanes
- F01D17/162—Final actuators arranged in stator parts varying effective cross-sectional area of nozzles or guide conduits by means of nozzle vanes for axial flow, i.e. the vanes turning around axes which are essentially perpendicular to the rotor centre line
-
- 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
- F01D25/00—Component parts, details, or accessories, not provided for in, or of interest apart from, other groups
- F01D25/24—Casings; Casing parts, e.g. diaphragms, casing fastenings
- F01D25/243—Flange connections; Bolting arrangements
-
- 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
- F01D5/02—Blade-carrying members, e.g. rotors
- F01D5/04—Blade-carrying members, e.g. rotors for radial-flow machines or engines
- F01D5/041—Blade-carrying members, e.g. rotors for radial-flow machines or engines of the Ljungström type
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
- F05D2230/00—Manufacture
- F05D2230/60—Assembly methods
- F05D2230/64—Assembly methods using positioning or alignment devices for aligning or centring, e.g. pins
- F05D2230/642—Assembly methods using positioning or alignment devices for aligning or centring, e.g. pins using maintaining alignment while permitting differential dilatation
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Turbine Rotor Nozzle Sealing (AREA)
Description
Verbindung zwischen zwei ringförmigen Maschinenelementen Die Erfindung bezieht sich auf eine Verbindung zwischen zwei ringförmigen, koaxial angeordneten Maschinenelementen, die während des Betriebes ver schiedenen Temperaturen und/oder tangentialen Zug beanspruchungen unterworfen sind, insbesondere auf eine sogenannte Expansionsverbindung.
Bei Dampf- und Gasturbinen oder anderen Ma schinen, bei welchen koaxial miteinander verbundene Teile sich relativ zueinander ausdehnen müssen, ohne dass gefährliche Spannungen auftreten, war es bisher üblich, Expansionsverbindungen in Form einer so genannten Stiftverbindung zu verwenden, bei welcher radial angeordnete Stifte Öffnungen in einander über lappenden Flanschen der entsprechenden Teile durch setzen.
Die Erfindung will eine verbesserte Verbindung dieser Art schaffen. Bei der erfindungsgemässen Ver bindung weist jeder Stift bzw. ein längs demselben verschiebbares Organ einen sphärisch geformten Teil auf, welcher derart ausgebildet und derart in der ihm zugeordneten Öffnung angeordnet ist, dass die Ver bindung, ausser dass sie zentrierend wirkt, die Ele mente drehfest verbindet.
In der Zeichnung sind mehrere Ausführungsbei spiele des Erfindungsgegenstandes beispielsweise dargestellt.
Die Fig. <B>1-7</B> zeigen perspektivische Darstellun gen und Schnitte von Ausführungsbeispielen, und Fig. 8 zeigt, auf welche Weise eine bei der in Fig. 7 gezeigten Ausführungsform verwendete Scheibe eingesetzt werden kann.
In der Zeichnung bezeichnen 1 und 2 zwei ring förmige Maschinenelemente, die bei der Ausführung gemäss den Fig. 1 und 2 aus einem Schaufelkranz 1 und einer denselben tragenden Turbinenscheibe 2 einer Dampf- oder Gasturbine bestehen.
Diese Ele- mente sind während des Betriebes verschiedenen Tem peraturen und/oder tangentialen Zugbeanspruchungen unterworfen. Sie sollten gleichzeitig zentriert und dreh- fest miteinander verbunden: sein, wozu sich die be kannte Stiftverbindung eignet.
Es sollte aber noch eine Deformation berücksichtigt werden, gemäss wel cher der eine oder andere der sich überlappenden Flansche konisch wird. Eine solche Winkeldefor mation zwischen den Flanschen kann ein Verklemmen der Verbindungsstifte bewirken, so dass sie übermässig belastet worden und übermässig verschleissen.
Der Schaufelkranz 1 hat einen axial herausragen den Flansch 3, der mit radialem Spiel zwischen zwei axial gerichtete Flansche 4, 5 der Turbinenscheibe 2 eingeführt ist, wie Fig. 2 zeigt. Die Flansche weisen Öffnungen 6 für radialverlaufende Stifte 7 auf, die je mit einem sphärischen Teil 8 versehen sind.
Diese kugelförmigen mittleren Teile erlauben, dass sich der Flansch 3 ungehindert um die Kugeln. drehen und eine kegelstumpfamtige Lage einnehmen, beispielsweise un ter dem Einfluss der Lastübertragung von den Schau feln oder infolge eines Verziehens der Turbinen scheibe.
Die Stifte weisen an sich bekannte Köpfe auf, d!ie verhüten, dass diese aus den Öffnungen heraus geworfen werden, und sind an den entgegengesetzten Enden mit einer Arretierung versehen, die verhindert, dass sie während des Stillstandes radial nach innen fallen.
Fig. 3 und 4 zeigen als weitere Beispiele Verbin- dungen mit einem Flansch an Jedem Maschinenele- ment, und Fig. 5 zeigt eine beispielsweise Verbindung zweier Scheiben.
Bei den in Fig. 6 und 7 dargestellten Ausführungs beispielen ist der Stift 7 mit einem zum Teil sphärisch ausgebildeten Organ 11 versehen, welches längs des Stiftes verschiebbar ist. Brei Fig. 6 hat dieses Organ die Form einer Kugel mit einer durchgehenden Boh- rung für den Stift.
Diese Kugel ist in einer Vertiefung 12 des Flansches 3 gelagert und wird darin vom Ring 13 gesichert, der zusammen mit den Wänden der Ver tiefung das Organ 11 umschliesst.
Bei deT Ausführung gemäss Fig. 7 besteht das Or gan 11 aus einer Scheibe mit einer zum Teil sphäri schen Aussenfläche, die in einer Öffnung mit einer komplementär ausgebildeten Wand liegt.
Um die Scheibe in diese Lage zu bringen, sind in den kreis- bogenförmigen Kanten der Öffnung Ausnehmungen 14 angeordnet, durch welche die Scheibe über Eck, wie bei Fig. 8 angedeutet, eingeführt, und nachher in die Lage gemäss Fig. 7 gedreht werden kann.
Connection between two ring-shaped machine elements The invention relates to a connection between two ring-shaped, coaxially arranged machine elements that are subjected to different temperatures and / or tangential tensile stresses during operation, in particular to a so-called expansion connection.
In steam and gas turbines or other machines in which coaxially connected parts have to expand relative to each other without dangerous stresses occurring, it has been customary to use expansion connections in the form of a so-called pin connection, in which radially arranged pins in openings put through overlapping flanges of the corresponding parts.
The invention seeks to provide an improved connection of this type. In the connection according to the invention, each pin or an organ that can be moved along the same has a spherically shaped part which is designed and arranged in the opening assigned to it such that the connection, except that it acts in a centering manner, connects the elements in a rotationally fixed manner .
In the drawing, several Ausführungsbei games of the subject invention are shown for example.
FIGS. 1-7 show perspective representations and sections of exemplary embodiments, and FIG. 8 shows the manner in which a disk used in the embodiment shown in FIG. 7 can be used.
In the drawing, 1 and 2 denote two ring-shaped machine elements which, in the embodiment according to FIGS. 1 and 2, consist of a blade ring 1 and a turbine disk 2 of a steam or gas turbine carrying the same.
These elements are subjected to different temperatures and / or tangential tensile loads during operation. They should be centered and connected to one another in a rotationally fixed manner at the same time, which is what the well-known pin connection is suitable for.
However, a deformation should also be taken into account according to which one or the other of the overlapping flanges becomes conical. Such an angular deformation between the flanges can cause the connecting pins to jam, so that they are excessively stressed and wear excessively.
The blade ring 1 has an axially protruding flange 3, which is inserted with radial play between two axially directed flanges 4, 5 of the turbine disk 2, as shown in FIG. The flanges have openings 6 for radially extending pins 7 which are each provided with a spherical part 8.
These spherical central parts allow the flange 3 to move freely around the balls. turn and assume a truncated cone-like position, for example under the influence of the load transfer from the blades or as a result of distortion of the turbine disk.
The pins have heads known per se, which prevent them from being thrown out of the openings, and are provided at the opposite ends with a catch which prevents them from falling radially inward during the standstill.
As further examples, FIGS. 3 and 4 show connections with a flange on each machine element, and FIG. 5 shows an example connection of two disks.
In the execution examples shown in Fig. 6 and 7, the pin 7 is provided with a partially spherical member 11 which is displaceable along the pin. Fig. 6, this organ has the shape of a ball with a through hole for the pin.
This ball is mounted in a recess 12 of the flange 3 and is secured therein by the ring 13 which, together with the walls of the recess, the organ 11 encloses.
In the embodiment according to FIG. 7, the Or gan 11 consists of a disc with a partially spherical outer surface, which lies in an opening with a complementary wall.
In order to bring the disk into this position, recesses 14 are arranged in the circular arc-shaped edges of the opening, through which the disk can be inserted at a corner, as indicated in FIG. 8, and then turned into the position according to FIG .
Claims (1)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CH5589558A CH363661A (en) | 1958-02-14 | 1958-02-14 | Connection between two ring-shaped machine elements |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CH5589558A CH363661A (en) | 1958-02-14 | 1958-02-14 | Connection between two ring-shaped machine elements |
Publications (1)
Publication Number | Publication Date |
---|---|
CH363661A true CH363661A (en) | 1962-08-15 |
Family
ID=4520158
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CH5589558A CH363661A (en) | 1958-02-14 | 1958-02-14 | Connection between two ring-shaped machine elements |
Country Status (1)
Country | Link |
---|---|
CH (1) | CH363661A (en) |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2672083A1 (en) * | 1991-01-25 | 1992-07-31 | Mtu Muenchen Gmbh | INSTALLATION FOR ADJUSTING THE CONTROL BLADES OF A TURBINE OF A GAS TURBINE ENGINE. |
WO2002012680A1 (en) * | 2000-08-03 | 2002-02-14 | Mtu Aero Engines Gmbh | Suspension |
EP1054137A3 (en) * | 1999-05-18 | 2003-05-07 | General Electric Company | Mounting an inner shell within an outer turbine casing |
EP1672223A2 (en) * | 2004-12-16 | 2006-06-21 | Snecma | Turbomachine having variable guide vanes operated by a self-centering unison ring |
EP1793096A1 (en) * | 2005-11-30 | 2007-06-06 | General Electric Company | Apparatus for assembling a gas turbine engine |
EP3192967A1 (en) * | 2016-01-18 | 2017-07-19 | Doosan Heavy Industries & Construction Co., Ltd. | Gas turbine rotor assembly with improved shaped torque pin |
-
1958
- 1958-02-14 CH CH5589558A patent/CH363661A/en unknown
Cited By (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2672083A1 (en) * | 1991-01-25 | 1992-07-31 | Mtu Muenchen Gmbh | INSTALLATION FOR ADJUSTING THE CONTROL BLADES OF A TURBINE OF A GAS TURBINE ENGINE. |
EP1054137A3 (en) * | 1999-05-18 | 2003-05-07 | General Electric Company | Mounting an inner shell within an outer turbine casing |
WO2002012680A1 (en) * | 2000-08-03 | 2002-02-14 | Mtu Aero Engines Gmbh | Suspension |
US6752591B2 (en) | 2000-08-03 | 2004-06-22 | Mtu Aero Engines Gmbh | Suspension |
EP1672223A2 (en) * | 2004-12-16 | 2006-06-21 | Snecma | Turbomachine having variable guide vanes operated by a self-centering unison ring |
FR2879686A1 (en) * | 2004-12-16 | 2006-06-23 | Snecma Moteurs Sa | STATOR TURBOMACHINE COMPRISING A RECTIFIER AUBES STAGE ACTED BY A ROTATING CROWN WITH AUTOMATIC CENTERING |
US7300245B2 (en) | 2004-12-16 | 2007-11-27 | Snecma | Stator vane stage actuated by an automatically-centering rotary actuator ring |
USRE42523E1 (en) | 2004-12-16 | 2011-07-05 | Snecma | Stator vane stage actuated by an automatically-centering rotary actuator ring |
EP1672223A3 (en) * | 2004-12-16 | 2014-01-22 | Snecma | Turbomachine having variable guide vanes operated by a self-centering unison ring |
EP1793096A1 (en) * | 2005-11-30 | 2007-06-06 | General Electric Company | Apparatus for assembling a gas turbine engine |
US7637110B2 (en) | 2005-11-30 | 2009-12-29 | General Electric Company | Methods and apparatuses for assembling a gas turbine engine |
EP3192967A1 (en) * | 2016-01-18 | 2017-07-19 | Doosan Heavy Industries & Construction Co., Ltd. | Gas turbine rotor assembly with improved shaped torque pin |
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