EP1678411A1 - Turbomaschine und beschaufelter rotor f r eine verdichterstu fe einer turbomaschine - Google Patents
Turbomaschine und beschaufelter rotor f r eine verdichterstu fe einer turbomaschineInfo
- Publication number
- EP1678411A1 EP1678411A1 EP04789909A EP04789909A EP1678411A1 EP 1678411 A1 EP1678411 A1 EP 1678411A1 EP 04789909 A EP04789909 A EP 04789909A EP 04789909 A EP04789909 A EP 04789909A EP 1678411 A1 EP1678411 A1 EP 1678411A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- blade
- rotor
- width
- blades
- circumferential direction
- 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
Links
- 230000006835 compression Effects 0.000 title 1
- 238000007906 compression Methods 0.000 title 1
- 238000011161 development Methods 0.000 description 2
- 230000018109 developmental process Effects 0.000 description 2
- 238000010276 construction Methods 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
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
-
- 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
- F05D2200/00—Mathematical features
- F05D2200/30—Mathematical features miscellaneous
- F05D2200/33—Mathematical features miscellaneous bigger or smaller
-
- 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
- F05D2240/00—Components
- F05D2240/80—Platforms for stationary or moving blades
Definitions
- the invention relates to a turbomachine, in particular a gas turbine, according to the preamble of patent claim 1. Furthermore, the invention relates to a rotor for a compressor stage of a turbomachine according to the preamble of patent claim 7.
- turbomachines in particular in gas turbines, it is known to fasten the rotor blades to a rotor in the compressor of the turbomachine by holding the rotor blades with their blade roots in a retaining groove that runs in the circumferential direction of the rotor, i.e., encloses the rotor in the circumferential direction, and thus fixes them become.
- a rotor design with a retaining groove running in the circumferential direction for fixing the rotor blades is also referred to as a circumferential groove rotor design or circumferential groove blade design.
- a filling groove is used to insert the blade feet into the correspondingly designed holding groove.
- the filling groove is dimensioned such that the blades can be pivoted into the filling groove with their blade feet in order to then be displaced in the circumferential direction in the holding groove. It is therefore already state of the art that the width of the filling groove is adapted to the width of the blade roots of the moving blades.
- the rotor blades are exposed to high mechanical loads as a result of high speeds during operation of the rotor or of the turbomachine, it is important that the blade feet have a sufficiently large cross-section and thus a sufficient strength, particularly in the area of a blade neck. Since the width of the filling groove has to be adapted to the width of the blade feet and, furthermore, after the installation of the rotor blades in the holding groove of the rotor, no blade root may protrude into the filling groove, according to the prior art, the rotor blades have blade feet that have a maximum width of have half a blade pitch.
- the blade division is to be understood as the distribution of the rotor blades over the circumference of the rotor, seen in the circumferential direction of the rotor and caused by the circumferential extent of the rotor blades. Proceeding from this, the present invention is based on the problem of creating a novel turbomachine and a novel rotor for a compressor stage of a turbomachine.
- the width of the blade roots and the width of the or each filling groove in the circumferential direction are greater than half the width of a desired or nominal blade division, with a first number of moving blades with the desired blade division being divided by a second number of moving blades in the region of the or each filling groove enlarged blade pitch are replaced, and wherein the first number is greater than the second number.
- each filling groove is evenly distributed over the circumference of the rotor, the width of each filling groove being greater than half the width of a desired nominal blade pitch in the circumferential direction, and wherein a first number of moving blades with the desired, nominal blade pitch are replaced by a second number of blades with increased blade pitch, the first number being greater than the second number.
- three blades with the desired blade pitch are replaced by two blades with an enlarged blade pitch in the area of the or each filling groove.
- the rotor according to the invention for a compressor stage of a turbomachine is characterized by the features of independent claim 7.
- FIG. 1 shows a section of a rotor 10 of a compressor of a turbomachine, in particular a gas turbine. 1, several blades 11 and 12 are arranged next to one another in the circumferential direction of the rotor 10.
- Fig. 1 is a highly schematic representation, so that Fig. 1 only shows the blade feet 13 and 14 of the blades 11 and 12 respectively. Only for two moving blades 11 in the right edge of FIG. 1 are the blades 15 indicated.
- the blades 11 and 12 are fixed with their blade feet 13 and 14 in a holding groove extending in the circumferential direction of the rotor 10.
- This holding groove is represented in FIG. 1 by a line marked with the reference number 16.
- a filling groove 17 is arranged in the region of the peripheral section of the rotor 10 shown in FIG. 1.
- the blades 11 and 12 with their blade feet 13 and 14 can be inserted into the holding groove 16 via the filling groove 17.
- the width of the filling groove 17 is adapted to the width of the blade feet 13 and 14.
- rotor blades 11 with a desired nominal blade pitch and rotor blades 12 with an enlarged blade pitch are arranged in the holding groove 16 of the rotor 10.
- the width of the blade feet 13 and 14 of the two types of moving blades 11, 12 is the same and adapted to the width of the filling groove 17.
- a first number of running Blade 1 1 with the desired nominal blade pitch replaced by a second number of blades 12 with increased blade pitch, the first number being greater than the second number.
- two blades 12 with an enlarged blade pitch are arranged in the area of the filling groove 17 instead of three blades 11 with the desired, nominal blade pitch.
- the above-described construction principle according to the invention makes it possible to arrange a plurality of moving blades with a smaller blade pitch along the circumference of the rotor 10 in the circumferential retaining groove 16, and at the same time by increasing the circumferential extent or width of the blade feet in the circumferential direction for increased strength and thus to ensure resilience.
- a filling groove 17 with blades 12 positioned in the area of the filling groove 17 is shown with a blade pitch that is enlarged compared to the desired nominal blade pitch. It is within the meaning of the present invention to arrange a plurality of such filling grooves 17 over the circumference of the rotor, the filling grooves 17 being evenly distributed over the circumference of the rotor 10. With two filling grooves, this would mean that the filling grooves are diametrically opposite. This ensures symmetry over the circumference of the rotor, which is advantageous in terms of avoiding imbalances and avoiding asymmetrical loads on the rotor 10. As can be seen in FIG.
- the blades 12 with an enlarged blade division compared to the blades 11 with a desired nominal blade division have an enlarged platform area 20.
- the platform region 20 of the blades 12 with an enlarged blade pitch is in each case 50% larger than a platform area 21 of the blades 1 1 with a nominal blade pitch.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
- Turbine Rotor Nozzle Sealing (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE10351092A DE10351092B4 (de) | 2003-10-31 | 2003-10-31 | Turbomaschine und beschaufelter Rotor für eine Verdichterstufe einer Turbomaschine |
| PCT/DE2004/002192 WO2005045200A1 (de) | 2003-10-31 | 2004-10-02 | Turbomaschine und beschaufelter rotor für eine verdichterstufe einer turbomaschine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP1678411A1 true EP1678411A1 (de) | 2006-07-12 |
| EP1678411B1 EP1678411B1 (de) | 2012-08-08 |
Family
ID=34485188
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP04789909A Expired - Lifetime EP1678411B1 (de) | 2003-10-31 | 2004-10-02 | Turbomaschine und beschaufelter rotor für eine verdichterstufe einer turbomaschine |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US7399164B2 (de) |
| EP (1) | EP1678411B1 (de) |
| DE (1) | DE10351092B4 (de) |
| WO (1) | WO2005045200A1 (de) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8608447B2 (en) * | 2009-02-19 | 2013-12-17 | Rolls-Royce Corporation | Disk for turbine engine |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2002469C3 (de) * | 1970-01-21 | 1978-03-30 | Motoren- Und Turbinen-Union Muenchen Gmbh, 8000 Muenchen | Laufschaufelbefestigung in einer schwalbenschwanzförmigen Umfangsnut eines Läufers axial durchströmter Strömungsmaschinen, insbesondere Gasturbinenstrahltriebwerke |
| US3597112A (en) * | 1970-02-02 | 1971-08-03 | Gen Electric | Compressor-blade-retaining means |
| CH678750A5 (de) * | 1989-03-22 | 1991-10-31 | Escher Wyss Ag | |
| US6152698A (en) * | 1999-08-02 | 2000-11-28 | General Electric Company | Kit of articles and method for assembling articles along a holder distance |
| GB2364554B (en) * | 2000-07-07 | 2004-04-07 | Alstom Power Nv | Turbine disc |
| FR2856728B1 (fr) * | 2003-06-27 | 2005-10-28 | Snecma Moteurs | Aube de compresseur de turboreacteur |
-
2003
- 2003-10-31 DE DE10351092A patent/DE10351092B4/de not_active Expired - Fee Related
-
2004
- 2004-10-02 US US10/576,917 patent/US7399164B2/en not_active Expired - Lifetime
- 2004-10-02 WO PCT/DE2004/002192 patent/WO2005045200A1/de not_active Ceased
- 2004-10-02 EP EP04789909A patent/EP1678411B1/de not_active Expired - Lifetime
Non-Patent Citations (1)
| Title |
|---|
| See references of WO2005045200A1 * |
Also Published As
| Publication number | Publication date |
|---|---|
| DE10351092A1 (de) | 2005-05-25 |
| DE10351092B4 (de) | 2013-11-21 |
| US20070134100A1 (en) | 2007-06-14 |
| US7399164B2 (en) | 2008-07-15 |
| EP1678411B1 (de) | 2012-08-08 |
| WO2005045200A1 (de) | 2005-05-19 |
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