EP3129600A1 - Radscheibenanordnung - Google Patents
RadscheibenanordnungInfo
- Publication number
- EP3129600A1 EP3129600A1 EP15738029.6A EP15738029A EP3129600A1 EP 3129600 A1 EP3129600 A1 EP 3129600A1 EP 15738029 A EP15738029 A EP 15738029A EP 3129600 A1 EP3129600 A1 EP 3129600A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- wheel disc
- sealing plates
- projections
- annular groove
- axially
- 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
- 238000007789 sealing Methods 0.000 claims abstract description 85
- 238000003475 lamination Methods 0.000 claims 1
- 230000000694 effects Effects 0.000 abstract description 2
- 230000007246 mechanism Effects 0.000 description 2
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000007787 solid Substances 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
- F01D5/3007—Fixing blades to rotors; Blade roots ; Blade spacers of axial insertion type
- F01D5/3015—Fixing blades to rotors; Blade roots ; Blade spacers of axial insertion type with side plates
-
- 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
- F05D2240/55—Seals
Definitions
- the present invention relates to a wheel disc assembly comprising a wheel disc, a plurality of blade devices, which are fastened along the outer circumference of the wheel disc meh ⁇ reren sealing plates, which are held in two radially spaced apart annular grooves, wherein the first annular groove is provided in the wheel disc and axially outwardly bounded by an annular projection, and wherein the second annular groove is defined by a plurality of adjacently disposed annular groove segments which are respectively provided in the individual blade devices.
- Wheel disc assemblies of the type mentioned are known in the prior art in a variety of configurations.
- the blade devices are inserted into grooves of the wheel disc, wherein successively, the sealing plates are inserted into the two annular grooves.
- all sealing plates must already be mounted and moved so far over their overlap areas in the annular grooves that the blade means can be installed in the associated grooves of the wheel disc. Subsequently, the sealing plates are pushed in the circumferential direction back to its intended position and secured there against displacement suitable.
- a disadvantage of the known Radalinan extracten is that the sealing plates are pressed against the blade means during the intended drive of Be ⁇ Radusionnan extract under the action of dominant centrifugal force, so that the overall net weight of the sealing plates rests on the blade means. This leads to a high load on the connections between the wheel disc and the Bucket devices, which is why they must be made very solid, which is associated with high costs.
- the present invention provides a Radterionan extract of the aforementioned type, which is characterized in that the first annular groove is formed undercut and viewed in cross-section ⁇ at least one axially projecting retaining projection which is provided with a contact surface, and that the sealing plates viewed in cross-section in the region of the inner diameter in each case have at least one, axially projecting support projection corresponding to the at least one retaining projection provided with a bearing surface, the contact surface of the at least one retaining projection, the bearing surface of the at least one support projection and the height of the sealing plates are formed such that support the supporting surfaces of the sealing plates during normal operation of the Radusionnan angel under the action of a centrifugal force against the contact surface of the at least one holding ⁇ projection.
- the self-weight of the sealing plates during normal operation of the wheel disc arrangement is absorbed by the at least one retaining projection of the wheel disc under the action of a centrifugal force.
- the connections between the wheel disc and the blade means are relieved, as the Centrifugal load is "decoupled" from the sealing sheets.
- the wheel disc can be made thinner in said Verbin ⁇ -making areas of the blade means.
- the sealing plates comprise in the region of In ⁇ nen pressmessers in cross section considered two korrespondie ⁇ rend to the retaining projections formed axially mutually ge ⁇ genüberode and away from each pointing supporting projections, which are each provided with a supporting surface, said at ⁇ bearing surfaces and the bearing surfaces are designed such that the bearing surfaces of the sealing plates during the determination ⁇ normal operation of Radularnan extract under the action of a centrifugal supported against the contact surfaces of the retaining projections.
- the weight of the sealing ⁇ plates is distributed more evenly during normal operation, whereby a better stability and force is achieved in the wheel disc.
- the contact surfaces of the at least ei ⁇ nen retaining projection and the support surfaces of the sealing plates each extend both transversely to the radial direction and transversely to the axial direction.
- the contact surfaces and the wings are each inclined.
- the side surfaces of the sealing plates extend at least partially transversely to the axial direction and are formed such that the sealing plates overlap in the intended state with respect to the axial direction in the region of their side surfaces. This way will be between the Side surfaces adjacent arranged sealing plates in the axial direction achieved a sealing effect.
- the side surfaces of the sealing plates are stepped, so that the sealing plates can be displaced relative to each other by a predetermined amount while maintaining an overlap in the circumferential direction.
- the grading should be selected such that the sealing plates can be pushed together in a state in which all sealing plates of a Radularnanowski are mounted so that between two adjacently arranged sealing plates, a distance can be set, which is greater than the width of a ⁇ individual sealing sheets.
- Such a configuration may be advantageous depending on the type of mounting of the sealing sheets, as will be apparent from the embodiment described below with reference to the figures.
- At least one axially extending through the annular projection recess is provided, the minimum width in
- Circumferential direction is greater than the width of the sealing plates Be ⁇ rich in the inner diameter, so that a sealing plate can be axially inserted through the recess between the annular grooves and moved in the circumferential direction of these. Thanks to such a recess, the sealing plates can be threaded in a simple manner in the associated annular grooves, even if all blade mechanisms are already mounted on the wheel disc, whereby the assembly is designed very flexi ⁇ bel. In addition, the individual sealing plates can be removed again in the case of service through the recess without much effort.
- two recesses are provided, which are formed opposite each other in the wheel disc.
- a closure piece is advantageously provided at least one recess for closing the at least releasably attachable to the wheel disk, wherein the closure piece has a receiving surface for receiving at least one sealing plate on ⁇ .
- the at least one closure piece on against ⁇ overlying sides radially outwardly projecting locking piece projections on which engage in the intended state in correspondingly formed pockets of the recess. In this way, the closure piece can be secured in the circumferential direction on the wheel disc.
- a securing of the closure piece is achieved in the intended state by or through the adjacent thereto positioned sealing plates.
- edges of the annular groove and / or the supporting projections and / or the closure piece are provided with radii, in order to avoid voltage peaks.
- FIG. 1 is a perspective view of a Radularnan ⁇ order according to an embodiment of the present invention in the fully assembled state
- Figure 2 is an enlarged sectional view of the marked in Figure 1 by the reference numeral II section;
- Figure 3 is an enlarged side view of the arrangement represents ⁇ identified in Figure 2;
- FIG. 4 is an enlarged view of the dargestell ⁇ th in Figure 2 th arrangement, wherein a closure piece is omitted for purposes of illustration; and
- FIG. 5 shows an enlarged side view of an alternative embodiment according to the invention of the arrangement shown in FIGS. 2 to 4.
- FIGS 1 to 4 show a wheel disc assembly 1 according to an embodiment of the present invention or components thereof.
- the wheel disc arrangement 1 comprises a wheel disc 2, a plurality of blade devices 3 which are fastened along the outer circumference of the wheel disc 2, and a plurality of sealing plates 4 which are held between the wheel disc 2 and the cam mechanisms 3 in two radially spaced annular grooves 5 and 6.
- the first annular groove 5 is provided as at ⁇ in the wheel disc 2 and axially outward is limited by an annular projection.
- the second annular groove 6 is defined by a plurality of adjacently arranged Ringnut- segments, which are each formed in the blade means 3.
- the wheel disc 2 comprises at least one axially extending through the annular projection 7 through recess 8 whose minimum width is in the circumferential direction is greater than the width of the sealing plates 4 at the inner diameter. Accordingly, the sealing plates 4 can be axially inserted through the recess 8 between the annular grooves 5 and 6 and moved in the circumferential direction of these.
- the wheel disc assembly 1 additionally comprises a closure piece 9, which can be detachably fastened to the wheel disc 2.
- the provided on the wheel disc 2 annular groove 5 has a cross-section viewed on ⁇ two axially opposing and mutually facing holding projections 10, which are each provided with a contact surface.
- the sealing plates 4 umfas ⁇ sen loading in the region of its inside diameter in cross section seeks two corresponding to the holding projections 10 formed axially opposite to each other and away from each facing support projections 12 which are each provided with a supporting surface. 13
- the retaining projections 10 and the Tragvor ⁇ jumps 12 each extend both transversely to the radial direction R and transverse to the axial direction A and are presently arranged on the bisector, with other inclinations are possible.
- the contact surfaces 11 of the holding projections 10, the support surfaces 13 of the support projections 12 and the height of the sealing plates 4 are formed or selected such that the support surfaces 13 of the sealing plates 4 during normal operation of the wheel disc assembly 1 under the action of centrifugal force against the contact surfaces Support 11 of the retaining projections 10.
- the side surfaces 14 of the sealing plates 4 extend at least partially transversely to the axial device A and are formed such that the sealing plates 4 overlap in beticiansgemä ⁇ Shen state with respect to the axial direction A in the region of their side surfaces 14.
- the sides 14 of the sealing plates 4 ten lake stepped design such that arranged adjacent and can be moved while maintaining the overlap of overlapping sealing plates ⁇ 4 in the radial direction.
- the degree of overlap is chosen such that the sealing sheets 4 in a state in which all the sealing sheets 4 are mounted on the wheel disc assembly 1, as shown in Figure 1, can slide into each other, that between two adjacent arranged Sealing plates 4, a distance can be set, which is greater than the maximum width of the sealing plates 4.
- the recess 8 comprises pockets 15 arranged on both sides, which extend axially through the entire annular projection 7 and form undercuts in the radial direction.
- the closure piece 9 comprises correspondingly formed to the pockets 15, radially outwardly projecting Ver gleich Swissvor- jumps 16, which engage in the intended condition of the closure piece 9 in the pockets 15, whereby in ra ⁇ dialer direction securing the closure piece 9 is achieved.
- the closure piece 9 further comprises a receiving surface 17 which serves to receive at least one sealing plate 4.
- the closure piece 9 a extending in the radial direction of the web 18 which formed in the intended state in corresponding, engages the inner diameter of the sealing plates 4 vorgese ⁇ hene Dichtblechnuten 19th
- all blade devices 3 are fastened to the wheel disc 2 in a known manner.
- the individual sealing plates 4 are inserted in sequence axially through the recess 8 in the annular grooves 5 and 6 and then displaced in the circumferential direction and arranged close together. Thanks to the stepped design of the side surfaces 14 of the sealing plates 4, it is possible that after the installation of all sealing plates 4, the region of the recess 8 remains free of sheet metal.
- the closure piece 9 is now inserted axially into the recess 8, wherein the Ver gleich Swissvorsprünge 16 engage with the pockets 15 of the annular projection 7, whereby a radial securing of the closure piece 9 is achieved.
- the sealing plates 4 are moved in the circumferential direction in its intended position.
- the Dichtblechnuten 19 two adjacent sealing plates 4 are each partially with the of the receiving surface ⁇ 17 of the closure piece 9 projecting web 18th engaged.
- the sealing plates 4 are fixed by suitable means in their intended ⁇ circumferential position.
- a fixation for example, using bolts not shown in detail, which extend through provided in the sealing plates 4, extending in the radial direction elongated holes and fixed to the wheel disc 2.
- the slots serve to allow movement of the sealing plates 4 during the normal operation of determ ⁇ mung Radularnan extract 1 in the radial direction.
- other suitable fastening means can be used to fix the sealing plates 4 in their intended circumferential position.
- An essential advantage of the wheel disc arrangement 1 is that the sealing plates can be assembled and disassembled easily and without problems, even if the
- Blade means 3 are already or still fixed to the wheel disc 2. Furthermore, the contact surface 11 of the Garvor ⁇ cracks 10, the wings 13 of the support projections 12 and the height of the sealing plates 4 are formed such that the wings 13 of the sealing plates 4 during beticiansgemä ⁇ Shen operation of the Radusionnanssen 1 under the action of centrifugal force against the Support surface 11 of the retaining projections 10.
- the weight of the sealing plates 4 is taken up by the wheel disc 2, which means that the connection areas between the wheel disc 2 and the show ⁇ fel sexualen 3 must be less stable and thus can be produced more cheaply.
- Thanks to the symmetrical design of the holding projections 10 and the support ⁇ projections 12 also a very homogeneous application of force is achieved in the wheel disc 2. It should be understood, however, that it is generally sufficient to provide a single retaining projection 10 and a single support projection 12, as shown in FIG similar components with the same reference numerals as in Figures 1 to 4 are provided.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Turbine Rotor Nozzle Sealing (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP14177468.7A EP2975219A1 (de) | 2014-07-17 | 2014-07-17 | Radscheibenanordnung |
PCT/EP2015/065664 WO2016008791A1 (de) | 2014-07-17 | 2015-07-09 | Radscheibenanordnung |
Publications (2)
Publication Number | Publication Date |
---|---|
EP3129600A1 true EP3129600A1 (de) | 2017-02-15 |
EP3129600B1 EP3129600B1 (de) | 2018-04-18 |
Family
ID=51205300
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP14177468.7A Withdrawn EP2975219A1 (de) | 2014-07-17 | 2014-07-17 | Radscheibenanordnung |
EP15738029.6A Active EP3129600B1 (de) | 2014-07-17 | 2015-07-09 | Radscheibenanordnung |
Family Applications Before (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP14177468.7A Withdrawn EP2975219A1 (de) | 2014-07-17 | 2014-07-17 | Radscheibenanordnung |
Country Status (5)
Country | Link |
---|---|
US (1) | US10309234B2 (de) |
EP (2) | EP2975219A1 (de) |
JP (1) | JP6463829B2 (de) |
CN (1) | CN106536863B (de) |
WO (1) | WO2016008791A1 (de) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP3511524A1 (de) | 2018-01-10 | 2019-07-17 | Siemens Aktiengesellschaft | Rotor mit in schaufelhaltenuten befestigten dichtelementen |
EP3564489A1 (de) | 2018-05-03 | 2019-11-06 | Siemens Aktiengesellschaft | Rotor mit fliehkraft-optimierten kontaktflächen |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB201508040D0 (en) * | 2015-05-12 | 2015-06-24 | Rolls Royce Plc | A bladed rotor for a gas turbine engine |
FR3113921A1 (fr) * | 2020-09-08 | 2022-03-11 | Safran Aircraft Engines | Roue aubagée de turbomachine |
Family Cites Families (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB802476A (en) * | 1955-09-29 | 1958-10-08 | Rolls Royce | Improvements in or relating to rotors of axial-flow fluid machines for example compressors and turbines |
US3572966A (en) * | 1969-01-17 | 1971-03-30 | Westinghouse Electric Corp | Seal plates for root cooled turbine rotor blades |
JPS5844202A (ja) | 1981-09-08 | 1983-03-15 | Hitachi Ltd | タ−ビン動翼固定装置 |
US4648799A (en) * | 1981-09-22 | 1987-03-10 | Westinghouse Electric Corp. | Cooled combustion turbine blade with retrofit blade seal |
US7500832B2 (en) * | 2006-07-06 | 2009-03-10 | Siemens Energy, Inc. | Turbine blade self locking seal plate system |
EP1916389A1 (de) * | 2006-10-26 | 2008-04-30 | Siemens Aktiengesellschaft | Turbinenschaufel Anordnung |
EP1944472A1 (de) * | 2007-01-09 | 2008-07-16 | Siemens Aktiengesellschaft | Axialer Rotorabschnitt für einen Rotor einer Turbine, Dichtelement für einen mit Laufschaufeln bestückten Rotor einer Turbine und Rotor für eine Turbine |
US7566201B2 (en) * | 2007-01-30 | 2009-07-28 | Siemens Energy, Inc. | Turbine seal plate locking system |
EP2873807A1 (de) * | 2013-11-18 | 2015-05-20 | Siemens Aktiengesellschaft | Abdeckplatte, Laufschaufel, Radscheibe, Bolzen und Gasturbine |
EP2933436A1 (de) * | 2014-04-15 | 2015-10-21 | Siemens Aktiengesellschaft | Radscheibe mit wenigstens einem Dichtblech |
EP2940249A1 (de) * | 2014-04-29 | 2015-11-04 | Siemens Aktiengesellschaft | Radscheibenanordnung und Verfahren zur Montage einer Radscheibenanordnung |
EP2975218A1 (de) * | 2014-07-17 | 2016-01-20 | Siemens Aktiengesellschaft | Radscheibenanordnung |
EP3015656A1 (de) * | 2014-10-30 | 2016-05-04 | Siemens Aktiengesellschaft | Radscheibenanordnung |
EP3015655A1 (de) * | 2014-10-30 | 2016-05-04 | Siemens Aktiengesellschaft | Radscheibenanordnung mit Dichtblechen |
EP3061916A1 (de) * | 2015-02-24 | 2016-08-31 | Siemens Aktiengesellschaft | Radscheibenanordnung eines Rotors und Verfahren zur Montage einer Radscheibenanordnung eines Rotors |
-
2014
- 2014-07-17 EP EP14177468.7A patent/EP2975219A1/de not_active Withdrawn
-
2015
- 2015-07-09 CN CN201580038898.4A patent/CN106536863B/zh active Active
- 2015-07-09 EP EP15738029.6A patent/EP3129600B1/de active Active
- 2015-07-09 WO PCT/EP2015/065664 patent/WO2016008791A1/de active Application Filing
- 2015-07-09 US US15/324,857 patent/US10309234B2/en active Active
- 2015-07-09 JP JP2017502632A patent/JP6463829B2/ja not_active Expired - Fee Related
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP3511524A1 (de) | 2018-01-10 | 2019-07-17 | Siemens Aktiengesellschaft | Rotor mit in schaufelhaltenuten befestigten dichtelementen |
EP3564489A1 (de) | 2018-05-03 | 2019-11-06 | Siemens Aktiengesellschaft | Rotor mit fliehkraft-optimierten kontaktflächen |
WO2019211091A1 (de) | 2018-05-03 | 2019-11-07 | Siemens Aktiengesellschaft | Rotor mit fliehkraft-optimierten kontaktflächen |
US11319824B2 (en) | 2018-05-03 | 2022-05-03 | Siemens Energy Global GmbH & Co. KG | Rotor with centrifugally optimized contact faces |
Also Published As
Publication number | Publication date |
---|---|
EP2975219A1 (de) | 2016-01-20 |
US20170204732A1 (en) | 2017-07-20 |
JP6463829B2 (ja) | 2019-02-06 |
CN106536863B (zh) | 2018-06-05 |
CN106536863A (zh) | 2017-03-22 |
JP2017522491A (ja) | 2017-08-10 |
US10309234B2 (en) | 2019-06-04 |
EP3129600B1 (de) | 2018-04-18 |
WO2016008791A1 (de) | 2016-01-21 |
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