EP1723312A1 - Rotor-schluss - Google Patents
Rotor-schlussInfo
- Publication number
- EP1723312A1 EP1723312A1 EP05716827A EP05716827A EP1723312A1 EP 1723312 A1 EP1723312 A1 EP 1723312A1 EP 05716827 A EP05716827 A EP 05716827A EP 05716827 A EP05716827 A EP 05716827A EP 1723312 A1 EP1723312 A1 EP 1723312A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- rotor
- halves
- circumferential groove
- intermediate piece
- entire
- 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
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
- F01D5/3023—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
- 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
- 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
- F05D2230/20—Manufacture essentially without removing material
- F05D2230/23—Manufacture essentially without removing material by permanently joining parts together
- F05D2230/232—Manufacture essentially without removing material by permanently joining parts together by welding
Definitions
- the invention relates to the field of power plant technology. It relates to a rotor closure for rotors of thermal turbomachinery according to the preamble of claim 1 and a method for assembling the rotor closure.
- Thermal turbomachines such as turbines and compressors, essentially consist of a rotor equipped with rotor blades and a stator, in which guide vanes are suspended.
- the fixed guide vanes have the task of directing the flow of the gaseous medium to be compressed or to be released onto the rotating barrel blading in such a way that the energy conversion takes place with the best possible efficiency.
- Both rotor blades and guide blades essentially have an airfoil and a blade root.
- grooves are inserted in the stator and on the rotor shaft. The feet of the blades are inserted into these grooves and locked there.
- the rotor end consists of a halved intermediate piece (two end halves) and a wedge. To assemble the halved intermediate piece, a remaining opening is required, which is finally closed by inserting a part.
- the two end halves each have a straight side surface, which forms a protruding tab at its upper end with the upper cover surface of the end half. The side surfaces mentioned face each other when installed, with the wedge between them. After the two end halves and the wedge have been installed, the flaps of the two end halves are finally caulked over the wedge.
- This known rotor end is supported on the rotor.
- a disadvantage of this prior art is that, due to the tilting moment of the two end halves, which is caused by the centrifugal force during operation, the wedge is able to bend open the flanged tabs. The wedge can fly out of the compressor and the compressor can be completely damaged.
- the applicant is also aware of a rotor closure for rotors of thermal turbomachines with a circumferential groove, which is known from two closure halves with the installed state against projecting side surfaces and adjoining cover surfaces, in which the side surfaces of the closure halves are form-fitting, by means of one per se known dovetail joint, are interconnected.
- the two End halves are locally welded to each other in the area in which the side surfaces and the top surfaces of the two end halves adjoin each other. This is to ensure that the rotor end is firmly anchored in the installed state. In the case of high loads, this anchoring is often not sufficient.
- the aim of the invention is to avoid the disadvantages of the prior art mentioned.
- the invention is based on the object of developing a rotor closure which is simple to manufacture and assemble and in which detachment is prevented during operation, so that the occurrence of compressor damage is avoided.
- this object is achieved in the case of a rotor closure for rotors of thermal turbomachinery in that the rotor closure consists of two end halves and an entire end intermediate piece, the end halves being connected to one another in a form-fitting manner by means of dovetailing of the adjacent two side surfaces, and the two end halves are firmly connected to the entire end intermediate piece via a weld seam in the area of the cover surfaces.
- the object is achieved in a method for assembling the rotor end in that the following steps are carried out: a) In a first step, the entire end intermediate piece is assembled in the remaining gap. b) In a second step, the first end half is inserted into the circumferential groove of the rotor from above. c) In a third step, this first end half is shifted laterally in the circumferential groove until it is anchored in the rotor. d) In a fourth step, the second end half is installed next to the already installed first end half. e) In a fifth step, the second end half is pushed in the opposite direction of the circumferential groove until the first and second end halves are positively interlocked with one another via the dovetail attachment. f) In a sixth step, the two positively connected end halves are finally welded to the entire end intermediate piece in the area of the cover surfaces.
- the advantages of the invention consist in the fact that the rotor closure is anchored both in a form-fitting and material-locking manner in the installed state and is therefore extremely firmly anchored.
- the individual parts of the rotor closure according to the invention are simple to manufacture and the assembly is not more complicated than the known prior art. Detachment during operation is prevented with certainty, so that the occurrence of compressor damage is avoided
- Figure 1 is a side view of the two end halves with dovetail hangings.
- Figure 2 is a side view of the entire end intermediate piece with preparation of the weld seam.
- 3 a-d individual steps for assembling the rotor end according to the invention into the circumferential groove of the rotor;
- FIG. 4 shows a plan view of two rotor blades suspended in the circumferential groove with the rotor end according to the invention fully assembled and welded 5 shows a section along the line VV in Fig.4.
- FIG. 1 and FIG. 2 show the side views of the “individual parts” of a rotor closure according to the invention for a compressor rotor before installation, namely FIG. 1 shows the two closure halves 1, 1 ′ and FIG. 2 the entire closure intermediate piece 2.
- the side surfaces 3, 3 'of the closing halves 1, 1' which face each other in the installed state, are designed in such a way that they enable the closing halves 1, 1 'to be hung in a manner known per se.
- the first end half 1 has a recess 4 in the side surface 3, while the side surface 3 "of the second end half 1 'has a projection 5 which fits precisely into this recess 4 (FIG. 1).
- the two parts 1 and 1 'therefore leads to a form fit (Fig. 3d).
- a weld seam preparation 8 is provided, into which a weld seam 9 is then welded.
- the entire end intermediate piece 2 is first installed in the circumferential groove 10. Then the first closing half 1 is inserted from above into the circumferential groove 10 (FIG. 3a) and, in a third step, laterally displaced in the circumferential groove 10 until it is anchored in the rotor 11 (FIG. 3b).
- the second end half V is mounted next to the already installed first end half 1 (FIG. 3c) and in a fifth step it is pushed into the opposite side of the circumferential groove 10 until the two end halves 1, 1 'are positively connected ,
- the rotor closure is firmly anchored in the installed state in a form-fitting and material-locking manner. This anchoring of the rotor end prevents detachment during operation and damage to the turbomachine caused thereby.
- the individual parts of the rotor closure according to the invention are simple to produce, an additional wedge is no longer required, and assembly is no more complicated than the known prior art.
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)
- Permanent Magnet Type Synchronous Machine (AREA)
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102004011508A DE102004011508A1 (de) | 2004-03-08 | 2004-03-08 | Rotor-Schluss |
| PCT/EP2005/050839 WO2005085599A1 (de) | 2004-03-08 | 2005-02-28 | Rotor-schluss |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP1723312A1 true EP1723312A1 (de) | 2006-11-22 |
| EP1723312B1 EP1723312B1 (de) | 2008-12-10 |
Family
ID=34895086
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP05716827A Expired - Lifetime EP1723312B1 (de) | 2004-03-08 | 2005-02-28 | Rotor-schluss |
Country Status (8)
| Country | Link |
|---|---|
| US (1) | US7309214B2 (de) |
| EP (1) | EP1723312B1 (de) |
| AT (1) | ATE417187T1 (de) |
| CA (1) | CA2558838C (de) |
| DE (2) | DE102004011508A1 (de) |
| ES (1) | ES2318466T3 (de) |
| TW (1) | TWI341899B (de) |
| WO (1) | WO2005085599A1 (de) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8176598B2 (en) * | 2009-08-03 | 2012-05-15 | General Electric Company | Locking spacer assembly for a circumferential dovetail rotor blade attachment system |
| US20110255978A1 (en) * | 2010-04-16 | 2011-10-20 | Brian Denver Potter | Locking Assembly For Circumferential Attachments |
| US20160186592A1 (en) * | 2014-12-31 | 2016-06-30 | General Electric Company | Flowpath boundary and rotor assemblies in gas turbines |
Family Cites Families (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR974989A (fr) * | 1948-09-17 | 1951-02-28 | Verrou pour l'aubage des rotors en forme de tambour de compresseurs axiaux et de turbines à vapeur ou à gaz | |
| NL81240C (de) * | 1951-08-31 | 1955-11-15 | ||
| DE1019318B (de) * | 1954-04-28 | 1957-11-14 | Siemens Ag | Deckbandbefestigung an Turbinenschaufeln mittels Bajonettverschlusses |
| CH349624A (de) * | 1957-03-05 | 1960-10-31 | Oerlikon Maschf | Axiale Strömungsmaschine |
| 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 |
| DE2151369A1 (de) * | 1971-10-15 | 1973-04-19 | Bosch Gmbh Robert | Zu einer blockeinheit verschweisste zellengefaesse fuer akkumulatoren |
| DE59906856D1 (de) * | 1999-02-12 | 2003-10-09 | Alstom Switzerland Ltd | Befestigung von Laufschaufeln einer Strömungsmachine |
| JP2003526120A (ja) * | 2000-03-09 | 2003-09-02 | コーニンクレッカ フィリップス エレクトロニクス エヌ ヴィ | 民生電子機器システムとの対話処理方法 |
| DE10346239A1 (de) * | 2003-10-06 | 2005-04-21 | Alstom Technology Ltd Baden | Verfahren zur Fixierung für die Beschaufelung einer Strömungsmaschine und Fixiervorrichtung |
| US6929453B2 (en) * | 2003-12-11 | 2005-08-16 | Siemens Westinghouse Power Corporation | Locking spacer assembly for slotted turbine component |
-
2004
- 2004-03-08 DE DE102004011508A patent/DE102004011508A1/de not_active Withdrawn
-
2005
- 2005-02-28 WO PCT/EP2005/050839 patent/WO2005085599A1/de not_active Ceased
- 2005-02-28 DE DE502005006205T patent/DE502005006205D1/de not_active Expired - Lifetime
- 2005-02-28 CA CA2558838A patent/CA2558838C/en not_active Expired - Fee Related
- 2005-02-28 EP EP05716827A patent/EP1723312B1/de not_active Expired - Lifetime
- 2005-02-28 AT AT05716827T patent/ATE417187T1/de not_active IP Right Cessation
- 2005-02-28 ES ES05716827T patent/ES2318466T3/es not_active Expired - Lifetime
- 2005-03-08 TW TW094106976A patent/TWI341899B/zh not_active IP Right Cessation
-
2006
- 2006-09-08 US US11/530,308 patent/US7309214B2/en not_active Expired - Lifetime
Non-Patent Citations (1)
| Title |
|---|
| See references of WO2005085599A1 * |
Also Published As
| Publication number | Publication date |
|---|---|
| ATE417187T1 (de) | 2008-12-15 |
| TW200535323A (en) | 2005-11-01 |
| DE502005006205D1 (de) | 2009-01-22 |
| EP1723312B1 (de) | 2008-12-10 |
| TWI341899B (en) | 2011-05-11 |
| WO2005085599A1 (de) | 2005-09-15 |
| US20070041840A1 (en) | 2007-02-22 |
| CA2558838A1 (en) | 2005-09-15 |
| CA2558838C (en) | 2012-06-12 |
| ES2318466T3 (es) | 2009-05-01 |
| US7309214B2 (en) | 2007-12-18 |
| DE102004011508A1 (de) | 2005-09-29 |
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