DE850681C - Adjustable diffuser for flow machines, especially gas turbines - Google Patents

Adjustable diffuser for flow machines, especially gas turbines

Info

Publication number
DE850681C
DE850681C DEM1008D DEM0001008D DE850681C DE 850681 C DE850681 C DE 850681C DE M1008 D DEM1008 D DE M1008D DE M0001008 D DEM0001008 D DE M0001008D DE 850681 C DE850681 C DE 850681C
Authority
DE
Germany
Prior art keywords
gas turbines
blades
flow machines
rings
especially gas
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.)
Expired
Application number
DEM1008D
Other languages
German (de)
Inventor
Fritz Ries
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.)
MAN AG
Original Assignee
MAN Maschinenfabrik Augsburg Nuernberg AG
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 MAN Maschinenfabrik Augsburg Nuernberg AG filed Critical MAN Maschinenfabrik Augsburg Nuernberg AG
Priority to DEM1008D priority Critical patent/DE850681C/en
Application granted granted Critical
Publication of DE850681C publication Critical patent/DE850681C/en
Expired legal-status Critical Current

Links

Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01DNON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
    • F01D17/00Regulating or controlling by varying flow
    • F01D17/10Final actuators
    • F01D17/12Final actuators arranged in stator parts
    • F01D17/14Final actuators arranged in stator parts varying effective cross-sectional area of nozzles or guide conduits
    • F01D17/16Final actuators arranged in stator parts varying effective cross-sectional area of nozzles or guide conduits by means of nozzle vanes
    • F01D17/162Final 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

Landscapes

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

Description

Die Erfindung betrifft einen verstellbaren Leitapparat mit vierdrehbaren Einzelschaufeln für axial beaufschlagte Strömungsmaschinen, insbesondere Gasturbinen hoher Temperaturen. Bei Strömungsmaschinen tritt vielfach die Forderung auf, den Durchsatz des Arbeitsmittels durch eine Querschnittsveränderung der Leitvorrichtung einzustellen. illan hat hierfür häufig die bekannten Leitgitter mit vierdrehbaren Einzelschaufeln vorgeschlagen und ausgeführt, die aber bei Verwendung bei Gasturbinen, insbesondere im Gebiet hoher Temperaturen, ziemliche Schwierigkeiten bereiten. Selbst hei feststehenden Leitschaufeln tritt infolge der ungleich viel stärkeren Beheizung der Schaufel selbst gegenüber den zylindrischen Wänden des Gaskanals oft eine ziemliche Verwerfung und damit ein unkontrollierbarer Austrittsquerschnitt ein. Der Erfindung lag die Aufgabe zugrunde, jedes Klemmen trotz der verhältnismäßig größeren radialen Dehnung der Schaufelblätter gegenüber den Ringwänden des Gitters zu vermeiden und kleinstmögliche Spiele zwischen Schaufel und Zylinderwand des Gitters einzuhalten, um Überströmen des Arbeitsgases von einem Leitkanal zum benachbarten zu vermeiden. Außerdem wurde leichte Verstellbarkeit zur schnellen und sicheren Regelung verlangt.The invention relates to an adjustable guide apparatus with four rotatable ones Individual blades for axially loaded flow machines, in particular gas turbines high temperatures. In fluid flow machines there is often the requirement that Throughput of the working medium due to a change in the cross section of the guide device to adjust. illan often has the well-known guide grilles with four-turners for this purpose Suggested and executed single blades, but when used in gas turbines, cause quite a problem, especially in areas with high temperatures. Self when stationary guide vanes occur as a result of the much stronger heating the blade itself is often quite a bit compared to the cylindrical walls of the gas duct Fault and thus an uncontrollable outlet cross-section. The invention was the underlying task of each clamping despite the relatively larger radial To avoid stretching of the blades in relation to the ring walls of the grid and to keep the smallest possible clearances between the blade and the cylinder wall of the grille, in order to avoid overflow of the working gas from one duct to the neighboring one. In addition, easy adjustability was required for fast and safe control.

Die Forderungen werden nach der Erfindung dadurch erfüllt, daß zwischen dem inneren und äußeren Haltering für die Verdrehspindeln der Leitschaufeln einerseits und den radialen Endflächen der Leitschaufeln andererseits je ein mehrteiliger Ring lose eingelegt ist, der sich mittels federnder Dichtungselemente, z. B. Kolbenringe, gegen den betreffenden Halterungsring abstützt. Durch die federnde Abstützung des losen Zwischenringes gegenüber den Halterungsringen für die Leitschaufelspindel wird ein Klemmen der Schaufelblätter gegenüber den Ring«-änden vermieden und die Einhaltung kleinstmöglicher Spiele an der Schaufelunter- und -oberkante ermöglicht.The requirements are met according to the invention in that between the inner and outer retaining ring for the rotating spindles of the guide vanes on the one hand and the radial end faces of the guide vanes, on the other hand, each have a multi-part ring is loosely inserted, which is by means of resilient sealing elements, z. B. piston rings, is supported against the retaining ring in question. The resilient support of the loose intermediate ring opposite the retaining rings for the guide vane spindle a jamming of the blades against the ring "edges is avoided and the Compliance with the smallest possible clearances on the lower and upper edge of the bucket is possible.

In der Zeichnung ist ein Ausführungsbeispiel eines Leitapparates nach der Erfindung in einem Axialschnitt dargestellt.In the drawing is an embodiment of a diffuser according to the invention shown in an axial section.

Die Schaufelblätter i sind mittels der Verdrehspindeln 2 und 3 in den Halterungsringen 4 und 5 gehalten. Zwischen den Schaufell)lättern i und den Halterungsringen 1 und 5 sind die geteilten Ringe 6 und 7 eingelegt, die sich mittels der federnden Ringe 8 gegen die Halterungsringe 4 und 5 abstützen. Der Hebel 9 dient zur Verstellung der Schaufelblätter i. Da die Zwischenringe 6 und 7 vor den Halterungsringen 4 und 5 liegen, genügt es gegebenenfalls die Zwischenringe 6 und 7 allein aus wärmebeständigem Werkstoff, z. B. legiertem Stahl oder Keramik, herzustellen.The blades i are in. By means of the twisting spindles 2 and 3 the retaining rings 4 and 5 held. Scroll between the shovel) and the Retaining rings 1 and 5, the split rings 6 and 7 are inserted, which means of the resilient rings 8 against the retaining rings 4 and 5. The lever 9 is used to adjust the blades i. Because the intermediate rings 6 and 7 in front of the retaining rings 4 and 5, it may be sufficient to use the intermediate rings 6 and 7 made of heat-resistant material alone Material, e.g. B. alloy steel or ceramic.

Claims (2)

PATENTANSPRÜCHE: i. Verstellbarer Leitapparat mit vierdrehbaren Einzelschaufeln für axial beaufschlagte Strömungsmaschinen, insbesondere Gasturbinen hoher Temperatur, dadurch gekennzeichnet, daß zwischen dem inneren und äußeren Halterungsring (4 und 5) für Verdrehspindeln (2 und 3) der Leitschaufeln (i) einerseits und den radialen Endflächen der Leitschaufeln (i) andererseits je ein mehrteiliger Ring (6 und 7) lose eingelegt ist, der sich mittels federnder Dichtungselemente (8), z. B. Kolbenringe, gegen den betreffenden Halterungsring (4 bzw. 5) abstützt. PATENT CLAIMS: i. Adjustable guide device with four rotating individual blades for axially loaded flow machines, in particular high temperature gas turbines, characterized in that between the inner and outer retaining ring (4 and 5) for rotating spindles (2 and 3) of the guide blades (i) on the one hand and the radial end surfaces of the guide blades ( i) on the other hand, a multi-part ring (6 and 7) is loosely inserted, which by means of resilient sealing elements (8), z. B. piston rings, supported against the relevant retaining ring (4 or 5). 2. Verstellbarer Leitapparat nach Anspruch i, dadurch gekennzeichnet, daß die losen Ringe (6 und 7) aus einem besonderen zunderfesten Werkstoff (legiertem Stahl, Keramik ad. dgl.) hergestellt ist.2. Adjustable guide apparatus according to claim i, characterized in that the loose Rings (6 and 7) made from a special non-scaling material (alloy steel, ceramic ad. Like.) is made.
DEM1008D 1945-02-13 1945-02-13 Adjustable diffuser for flow machines, especially gas turbines Expired DE850681C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEM1008D DE850681C (en) 1945-02-13 1945-02-13 Adjustable diffuser for flow machines, especially gas turbines

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEM1008D DE850681C (en) 1945-02-13 1945-02-13 Adjustable diffuser for flow machines, especially gas turbines

Publications (1)

Publication Number Publication Date
DE850681C true DE850681C (en) 1952-09-25

Family

ID=7290990

Family Applications (1)

Application Number Title Priority Date Filing Date
DEM1008D Expired DE850681C (en) 1945-02-13 1945-02-13 Adjustable diffuser for flow machines, especially gas turbines

Country Status (1)

Country Link
DE (1) DE850681C (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2919890A (en) * 1955-09-16 1960-01-05 Gen Electric Adjustable gas turbine nozzle assembly
DE1224990B (en) * 1961-05-23 1966-09-15 Rolls Royce Guide device for flow machines, especially gas turbines
DE1286809B (en) * 1960-09-01 1969-01-09 Garrett Corp Eine Ges Des Staa Guide vane for gas turbines
US5931636A (en) * 1997-08-28 1999-08-03 General Electric Company Variable area turbine nozzle
FR2824593A1 (en) * 2001-05-10 2002-11-15 Snecma Moteurs Stator blades pivot support installation comprises bringing together two rings comprising half of internal pivot bores and sliding snap ring into groove in junction between rings
US20160298484A1 (en) * 2013-11-25 2016-10-13 United Technologies Corporation A method for providing coolant to a movable airfoil

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2919890A (en) * 1955-09-16 1960-01-05 Gen Electric Adjustable gas turbine nozzle assembly
DE1286809B (en) * 1960-09-01 1969-01-09 Garrett Corp Eine Ges Des Staa Guide vane for gas turbines
DE1224990B (en) * 1961-05-23 1966-09-15 Rolls Royce Guide device for flow machines, especially gas turbines
US5931636A (en) * 1997-08-28 1999-08-03 General Electric Company Variable area turbine nozzle
FR2824593A1 (en) * 2001-05-10 2002-11-15 Snecma Moteurs Stator blades pivot support installation comprises bringing together two rings comprising half of internal pivot bores and sliding snap ring into groove in junction between rings
US20160298484A1 (en) * 2013-11-25 2016-10-13 United Technologies Corporation A method for providing coolant to a movable airfoil
US10385720B2 (en) * 2013-11-25 2019-08-20 United Technologies Corporation Method for providing coolant to a movable airfoil

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