DE1601619A1 - Device for volume control of the cooling air in the axial suspensions of the blades of combustion turbines - Google Patents

Device for volume control of the cooling air in the axial suspensions of the blades of combustion turbines

Info

Publication number
DE1601619A1
DE1601619A1 DE19671601619 DE1601619A DE1601619A1 DE 1601619 A1 DE1601619 A1 DE 1601619A1 DE 19671601619 DE19671601619 DE 19671601619 DE 1601619 A DE1601619 A DE 1601619A DE 1601619 A1 DE1601619 A1 DE 1601619A1
Authority
DE
Germany
Prior art keywords
cooling air
blades
cooling
volume control
combustion turbines
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
DE19671601619
Other languages
German (de)
Inventor
Lubomir Mudrak
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.)
Prvni Brnenska Strojirna Zavody Klementa Gottwalda Narodni Podnik
Original Assignee
Prvni Brnenska Strojirna Zavody Klementa Gottwalda Narodni Podnik
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 Prvni Brnenska Strojirna Zavody Klementa Gottwalda Narodni Podnik filed Critical Prvni Brnenska Strojirna Zavody Klementa Gottwalda Narodni Podnik
Publication of DE1601619A1 publication Critical patent/DE1601619A1/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
    • F01D5/02—Blade-carrying members, e.g. rotors
    • F01D5/08—Heating, heat-insulating or cooling means
    • F01D5/081—Cooling fluid being directed on the side of the rotor disc or at the roots of the blades
    • F01D5/084—Cooling fluid being directed on the side of the rotor disc or at the roots of the blades the fluid circulating at the periphery of a multistage rotor, e.g. of drum type
    • 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
    • F01D5/3007—Fixing blades to rotors; Blade roots ; Blade spacers of axial insertion type

Landscapes

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

Description

Prvni" brnenslcä strojirna, Zavody, Klementa Gottwalda» narodni podnik, Brno (CSSH)Prvni "brnenslcä strojirna, Zavody, Klementa Gottwalda» narodni podnik, Brno (CSSH)

Einrichtung zur Mengenregelung der Kühlluft in axialen Aufhängungen der Schaufeln von VerbrennungaturbinenDevice for regulating the amount of cooling air in the axial direction Suspension of the blades of combustion turbines

Die Erfindung bezieht dich auf eine Eimtohtung zur Mengenregelung der Kühlluft in axialen Aufhängungen der Schaufeln von Verbrennung^tuspbine».The invention relates to a setting for Volume regulation of the cooling air in the axial suspensions of the blades of combustion ^ tuspbine ».

Eine der wirkungsvollsten Kühlungearten, you Läufern von Verbrennungsturbinen ist das Durchblasen der egd,« al en Aufhängungen der Sahauf ein mit Kühlluft» BeiAnwendung dieser Kühlungsart ist ββ notwendig, den. Durch fluß einer optimalen Kenge vo» KtÖüilujft au sichern,One of the most effective Kühlungearten, you runners of combustion turbines is blowing through the egd, "al en suspensions of Sahauf a cooling air" BeiAnwendung this type of cooling is ββ needed to. Through the flow of an optimal kenge of »KtÖüilujft au secure,

9821/087» original inspected9821/087 »original inspected

eine genügend niedrige Temperatur in den Aufhängungen gewährleistet, aber dabei keine umsonst groß· Entnahme der Luft aus dem Kreisprozeß darstellt.ensures a sufficiently low temperature in the suspensions, but not in vain large · represents extraction of air from the cycle.

Mit Rücksicht darauf, dafl unter den Aufhängungen der Schaufeln in vorderen Reihen ein Überdruck der Kühlluft gegen das Eindringen von Brennprodukten herrschen muß, ißt es vorteilhaft, die Menge der Kühlluft durch Drosselung des Durchflusses der Kühlluft am Austritt aus den Kühlkanälen zu regeln.With that in mind, under the suspensions of the blades in the front rows, an overpressure of the cooling air must prevail against the penetration of combustion products, it is advantageous to eat the amount the cooling air by throttling the flow of the To regulate cooling air at the outlet from the cooling ducts.

Die Aufgabe der Erfindung ist, eine solche Drosselung zu ermöglichen. Bei einer Einrichtung zur Mengenregelung der Kühlluft in axialen Aufhängungen der Schaufeln von Verbrennungsturbinen durch Drosselung des Durchflusses der Kühlluft am Austritt aus den Kühlkanälen geschieht dies erfindungsgemäß dadurch, daß! in die Schaufelnut vor die Schaufeln der letzten Reihe Platten, die in der form der Form der Schaufelnut entsprechen, eingeschoben sind, wobei im Kühlkanal unter der Schaufel di· Platten mit Drosselorgan^ versehen sind. Indem man die Größe der Ausnehmung oder des Durchmessers und die Anzahl der öffnungen, die diese Drosselorgane bilden, anpaßt, ist •β möglieh, die Meng» der Kühlluft und dadurch die Intensität der Kühlung zu regeln. Die Form des Drosselorgan» kann so ausgeführt sein, daß denn Breite ausreichend ist und duroh Verunreinigungen aus der Luft nioht verstopft wird.The object of the invention is to enable such a throttling. At a facility for Volume control of the cooling air in the axial suspension of the blades of combustion turbines by throttling the flow of cooling air at the outlet the cooling channels this is done according to the invention in that! into the shovel groove in front of the blades of the last row of plates, which correspond in the shape of the shape of the blade groove, are inserted, wherein in the cooling channel under the blade the plates are provided with a throttle device. By adapting the size of the recess or the diameter and the number of openings which these throttling elements form • β possible, the amount of cooling air and thereby the To regulate the intensity of the cooling. The shape of the throttle element can be designed so that the width is sufficient and does not clog impurities from the air.

009821/0878009821/0878

Ein Ausführungsbeispiel der erfindungsgemäßen Einrichtung ist anhand der Zeichnung veranschaulicht. An embodiment of the invention Facility is illustrated with the aid of the drawing.

Hierbei zeigtχHere shows

Fig. 1 ein Schema der erfindungsgemäßen Einrichtung mit Ausnehmung in der Platte und1 shows a diagram of the device according to the invention with a recess in the plate and

Fig. 2 eine Anordnung mit Kreisöffnungen.Fig. 2 shows an arrangement with circular openings.

Wie in Figur 1 gezeigt, ist in der Sohaufelnur 1 eine Platte 2, die in der Form mit der Schaufelnut 1 übereinstimmt, eingelegt.As shown in Fig. 1, in the soiling only 1 is one Plate 2, which matches the shape of the scoop groove 1, is inserted.

Im Kühlkanal unter der Schaufel sind Drosselorgane 3 duroh Ausnehmung in d«r Platte 2 auegebildet. In the cooling channel under the blade, throttle elements 3 are formed by means of a recess in the plate 2 .

In Figur 2 ist eine andere Auführungsart veranschaulicht, in der das Drosselorgan durch einige Kreisöffnungen in der Platte 2 gebildet ist.In Figure 2, another type of execution is illustrated, in which the throttle member is formed by a few circular openings in the plate 2.

- Patentansprüche -- patent claims -

009821 /0876009821/0876

Claims (1)

Έ S. ii Gi JL t & ΕΙ M Ί& T Ü G M &Έ S. ii Gi JL t & ΕΙ M Ί & T Ü G M & Einrichtung zur Mengenregelung der Kühlluft in axialen Aufhängungen der Schaufeln -von Vertrennungeturbinen duroh Drosselung dee Durchflusses der Kühlluft am Austritt aus den Kuhlkanälen, dadurch gekennzeichnet, daß in der Schaufelnut (1) vor die Schaufeln der letzten Seihe Platten (2), die in der Form mit der 3?drm der Sehaufelnut (1) ubereinstimmen, eingelegt sind, wobei im Kuhlkanal unter der Sacüiaufel die Platten (2) mit Drosselorganen (3) versehen sind.Device for regulating the amount of cooling air in the axial suspension of the blades -of separation turbines duroh throttling of the flow of cooling air at the outlet from the cooling ducts, characterized in that in the blade groove (1) in front of the blades of the last sieve plates (2), which are in the form with the 3? drm of the Sehaufelnut (1) coincide, are inserted, the plates (2) being provided with throttling devices (3) in the cooling channel under the Sacüiaufel. 2. Einrichtung nach Anspruch 1, dadurch gekennzeichnet, daß tie Brosjaelorgane {3} der Platten (2) in Kühlkanalen unter der Schaufel als Ausnehmungen oder Kreisöffnungen ausgebildet sind.2. Device according to claim 1, characterized in that that tie Brosjaelorgane {3} of the plates (2) in cooling channels under the blade as Recesses or circular openings are formed. 25. Jfcagust25. Jfcagust L e e r s e i t eL e r s e i t e
DE19671601619 1967-08-31 1967-08-29 Device for volume control of the cooling air in the axial suspensions of the blades of combustion turbines Pending DE1601619A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3988367A GB1183835A (en) 1967-08-31 1967-08-31 Improvements in or relating to the Regulation of Cooling-Air Flow in Gas Turbines.

Publications (1)

Publication Number Publication Date
DE1601619A1 true DE1601619A1 (en) 1970-05-21

Family

ID=10412001

Family Applications (1)

Application Number Title Priority Date Filing Date
DE19671601619 Pending DE1601619A1 (en) 1967-08-31 1967-08-29 Device for volume control of the cooling air in the axial suspensions of the blades of combustion turbines

Country Status (2)

Country Link
DE (1) DE1601619A1 (en)
GB (1) GB1183835A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0649975A1 (en) * 1993-10-26 1995-04-26 United Technologies Corporation Metering of cooling air in turbine blades

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3473000D1 (en) * 1983-12-05 1988-09-01 Westinghouse Electric Corp Cascaded air supply for gas turbine cooling
EP0353447A1 (en) * 1988-07-29 1990-02-07 Westinghouse Electric Corporation Side-entry grooves for mounting turbine blades
JP5322664B2 (en) 2009-01-14 2013-10-23 株式会社東芝 Steam turbine and cooling method thereof
US10895160B1 (en) * 2017-04-07 2021-01-19 Glenn B. Sinclair Stress relief via unblended edge radii in blade attachments in gas turbines

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0649975A1 (en) * 1993-10-26 1995-04-26 United Technologies Corporation Metering of cooling air in turbine blades

Also Published As

Publication number Publication date
GB1183835A (en) 1970-03-11

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