EP0799971A3 - Thermal barrier for turbine rotor - Google Patents

Thermal barrier for turbine rotor Download PDF

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Publication number
EP0799971A3
EP0799971A3 EP97810142A EP97810142A EP0799971A3 EP 0799971 A3 EP0799971 A3 EP 0799971A3 EP 97810142 A EP97810142 A EP 97810142A EP 97810142 A EP97810142 A EP 97810142A EP 0799971 A3 EP0799971 A3 EP 0799971A3
Authority
EP
European Patent Office
Prior art keywords
rotor
rotates
flow channel
cavity
turbine rotor
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.)
Granted
Application number
EP97810142A
Other languages
German (de)
French (fr)
Other versions
EP0799971A2 (en
EP0799971B1 (en
Inventor
Fritz Schaub
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.)
General Electric Switzerland GmbH
Original Assignee
ABB Asea Brown Boveri Ltd
Asea Brown Boveri AB
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 ABB Asea Brown Boveri Ltd, Asea Brown Boveri AB filed Critical ABB Asea Brown Boveri Ltd
Publication of EP0799971A2 publication Critical patent/EP0799971A2/en
Publication of EP0799971A3 publication Critical patent/EP0799971A3/en
Application granted granted Critical
Publication of EP0799971B1 publication Critical patent/EP0799971B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime 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

Abstract

Die Erfindung betrifft eine Vorrichtung zur Wärmedämmung von einem mit mindestens zwei Reihen Laufschaufeln (6, 9) bestückten Verdichterrotor (5) einer thermischen Turbomaschine, insbesondere eines Hochdruckverdichters, welcher um eine Achse (12) in einem von einem heissen Medium durchströmten Strömungskanal (14) rotiert, wobei im Rotor (5) in Oberflächennähe mindestens ein umlaufender Hohlraum (13) vorgesehen ist, welcher über einen Trennungsspalt (15) mit dem Strömungskanal (14) verbunden ist und welcher jeweils zwischen den Laufschaufelreihen (6, 9) angeordnet ist. Die Erfindung ist dadurch gekennzeichnet, dass der umlaufende Hohlraum (13) eine kreisförmige Querschnittsfläche aufweist, und dass die axiale Ausdehnung (d) besagten Hohlraumes (13) etwa so gross ist wie der axiale Abstand (s) zwischen zwei benachbarten Hohlräumen (13). Bei Anwendung der Erfindung kann auf montierte Wärmestausegmente zum Schutz des Rotors vor zu hohen Temperaturen verzichtete werden.

Figure 00000001
The invention relates to a device for heat insulation of a compressor rotor (5), equipped with at least two rows of rotor blades (6, 9), of a thermal turbomachine, in particular a high-pressure compressor, which rotates about an axis (12) in a flow channel (14) through which a hot medium flows. rotates, in the rotor (5) near the surface at least one circumferential cavity (13) is provided, which is connected via a separation gap (15) to the flow channel (14) and which is arranged between the rotor blade rows (6, 9). The invention is characterized in that the circumferential cavity (13) has a circular cross-sectional area and that the axial extent (d) of said cavity (13) is approximately as large as the axial distance (s) between two adjacent cavities (13). When using the invention, it is possible to dispense with installed heat accumulation segments to protect the rotor from excessive temperatures.
Figure 00000001
EP97810142A 1996-04-04 1997-03-13 Thermal barrier for turbine rotor Expired - Lifetime EP0799971B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19613472 1996-04-04
DE19613472A DE19613472A1 (en) 1996-04-04 1996-04-04 Thermal insulation device

Publications (3)

Publication Number Publication Date
EP0799971A2 EP0799971A2 (en) 1997-10-08
EP0799971A3 true EP0799971A3 (en) 1999-07-07
EP0799971B1 EP0799971B1 (en) 2002-11-13

Family

ID=7790448

Family Applications (1)

Application Number Title Priority Date Filing Date
EP97810142A Expired - Lifetime EP0799971B1 (en) 1996-04-04 1997-03-13 Thermal barrier for turbine rotor

Country Status (2)

Country Link
EP (1) EP0799971B1 (en)
DE (2) DE19613472A1 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102004007327A1 (en) 2004-02-14 2005-09-15 Alstom Technology Ltd rotor
EP2551453A1 (en) 2011-07-26 2013-01-30 Alstom Technology Ltd Cooling device of a gas turbine compressor

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2848193A (en) * 1953-04-08 1958-08-19 Gen Electric Air cooled turbomachine blading
US2858103A (en) * 1956-03-26 1958-10-28 Westinghouse Electric Corp Gas turbine apparatus
DE972310C (en) * 1952-05-22 1959-07-02 Siemens Ag Turbine runner composed of disks and rings
DE1068274B (en) * 1959-11-05 Gut WöMried Post Rottendorf bei Würzburg Dr.-Ing. Karl Roder Turbo machine drum runner
DE4324034A1 (en) * 1993-07-17 1995-01-19 Abb Management Ag Gas turbine with a cooled rotor

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE595668C (en) * 1934-04-16 Bbc Brown Boveri & Cie Device for securing the connection between pushed and pressed or shrunk parts of runners

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1068274B (en) * 1959-11-05 Gut WöMried Post Rottendorf bei Würzburg Dr.-Ing. Karl Roder Turbo machine drum runner
DE972310C (en) * 1952-05-22 1959-07-02 Siemens Ag Turbine runner composed of disks and rings
US2848193A (en) * 1953-04-08 1958-08-19 Gen Electric Air cooled turbomachine blading
US2858103A (en) * 1956-03-26 1958-10-28 Westinghouse Electric Corp Gas turbine apparatus
DE4324034A1 (en) * 1993-07-17 1995-01-19 Abb Management Ag Gas turbine with a cooled rotor

Also Published As

Publication number Publication date
DE59708687D1 (en) 2002-12-19
DE19613472A1 (en) 1997-10-09
EP0799971A2 (en) 1997-10-08
EP0799971B1 (en) 2002-11-13

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