EP3129599A1 - Radscheibenanordnung - Google Patents
RadscheibenanordnungInfo
- Publication number
- EP3129599A1 EP3129599A1 EP15738025.4A EP15738025A EP3129599A1 EP 3129599 A1 EP3129599 A1 EP 3129599A1 EP 15738025 A EP15738025 A EP 15738025A EP 3129599 A1 EP3129599 A1 EP 3129599A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- wheel disc
- sealing plates
- projection
- recess
- 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 92
- 230000000694 effects Effects 0.000 claims description 3
- 230000000717 retained effect Effects 0.000 abstract 2
- 241000937413 Axia Species 0.000 description 1
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 230000000630 rising 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
- F01D5/3007—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 having a wheel disc, a plurality of blade means, which are fixed along the outer periphery of the wheel disc, and a plurality of sealing plates, which are held in two radially spaced apart annular grooves, wherein the first annular groove provided in the wheel disc and axially outwardly through an annular projection is bounded, and wherein the second annular groove is defined by a plurality of adjacently arranged 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 extract is that the sealing plates are difficult to de ⁇ assemble service, since initially two adjacent blade devices must be removed, which is associated in practice with considerable effort.
- the present invention provides a Radularnan extract of the aforementioned type, which is characterized in that at least one axially extending through the annular projection extending recess is provided whose minimum width in the circumferential direction is greater than the width of the sealing plates on the inner diameter, so that a sealing plate can be axially inserted through the recess between the annular grooves and guided in the circumferential direction of these, and that at least one closure ⁇ piece is provided, which is prepared for closing the recess and releasably secured to the wheel disc, wherein the closure piece in the intended mounted to ⁇ stand is held captive in the axial direction by a provided between the closure piece and at least one sealing plate positive locking.
- the sealing plates can be threaded in a simple manner in the associated annular grooves, even if all blade devices are already mounted on the wheel disc, whereby the assembly is made very flexible.
- the individual sealing plates can be easily removed again in the service ⁇ case through the recess easily without much effort. Thanks to the provided between the closure piece and at least one sealing plate positive locking to ⁇ additional securing elements for securing the VerMedicstü ⁇ ckes in the assembled state superfluous, creating a very simple structure is achieved with few components.
- Sealing plate formed recess realized, in which the projection engages in the intended mounted state.
- the at least one recess is advantageously formed as a circumferentially extending ring segment-shaped groove and the at least one projection ⁇ as a circumferentially extending ring-segment-shaped web, whereby a simple structure is achieved.
- the first annular groove is formed undercut and has, viewed in cross section, at least one axially projecting retaining projection, which is provided with a contact surface, and the sealing plates have in the region of In ⁇ nen pressmessers viewed in cross section in each case at least one corresponding to the at least one holding projection formed, axially projecting support projection, which is provided with a support surface, wherein the abutment surface of the at least one retaining projection, the support surface of the at least one support projection and the height of the sealing plates are formed ⁇ such that the support surfaces of the sealing plates currency ⁇ rend of the intended Operating the Radusionnan angel supported by the action of a centrifugal force against the contact surface of the at least one retaining projection.
- the sealing plates comprise in the range of the inside diameter viewed in cross section, two corresponding to the Holding projections formed, axially opposing and facing away from each other supporting projections, which are ⁇ Weil provided with a support surface, wherein the abutment ⁇ surfaces and the wings are formed such that the wings of the sealing plates during the normal operation of the Radusionnan angel under the action support a centrifugal force against the contact surfaces of the retaining projections.
- the contact surface of the at least one holding 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. In this way, a sealing effect is achieved between the side surfaces adjacent arranged sealing plates in the axial direction.
- the side surfaces of the sealing plates are stepped, so that the sealing plates while maintaining a Overlap in the circumferential direction to each other by a predetermined amount can be moved.
- the gradation should be chosen such that the sealing plates can be pushed together in a state in which all the sealing plates of a Radularnanowski are mounted such that a distance can be adjusted between two adjacently arranged sealing sheets, which is greater than the width of a ⁇ individual sealing plate is.
- Such a configuration may be part of, depending on the type of mounting of the sealing sheets of Vor ⁇ , as will become apparent from the embodiment described below with reference to the figures.
- 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.
- the closure piece can be secured in the circumferential direction on the wheel disc.
- Figure 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;
- Figure 4 is an enlarged view of the dargestell ⁇ th in Figure 2 th arrangement, wherein a closure piece is omitted for purposes of illustration;
- Figure 5 is an enlarged side view of an alternative embodiment according to the invention of the arrangement shown in Figures 2 to 4;
- Figure 6 is an enlarged side view of another
- FIGS. 1 to 4 show a wheel disc assembly 1 according to an embodiment of the present invention or components thereof.
- the wheel disc assembly 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 Schau ⁇ fel wornen 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 annular groove segments which are respectively formed in the blade devices 3.
- the wheel disc 2 comprises at least one axially extending through the annular projection 7 through recess 8 whose minimum width in the circumferential direction is greater than the
- Width of the sealing plates 4 is the inner diameter. Entspre ⁇ accordingly can move the sealing plates 4 are inserted axially through the recess 8 between the annular grooves 5 and 6 and led in the circumferential direction thereof.
- the wheel disc assembly 1 also comprises a
- Closure piece 9 which can be releasably attached to the wheel disc 2.
- the provided on the wheel disc 2 first annular groove 5 is formed ter ⁇ ter4.000en and has seen in cross section on two axially opposite and mutually facing retaining projections 10, which are each provided with a contact surface 11.
- the sealing plates 4 include in the area of their Inner diameter viewed in cross section two corres ⁇ ingly to the holding projections 10 formed axially a ⁇ other towards and away from each facing support projections 12 which are each provided with a supporting surface. 13
- the holding projections 10 and the supporting projections 12 each extend both transversely to the radial direction R and transversely to the axial direction A and are presently arranged on the Winkelhalbie ⁇ ing, with other inclinations are possible.
- the contact surfaces 11 of the retaining 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 Radepticnan extract 1 under the action of centrifugal force against the contact surfaces 11 of Support holding 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 beticiansge ⁇ MAESSEN state with respect to the axial direction A in the region of their side surfaces 14.
- the side surfaces 14 of the sealing plates 4 are stepped, so that adjacent arranged and overlapping sealing ⁇ sheets 4 can be moved in the radial direction while maintaining the overlap.
- the degree of overlap is selected such that the sealing sheets 4 in a state in which all the sealing sheets 4 are mounted on the Radusionnan angel 1, as shown in Figure 1, can slide into each other, that between two adjacently arranged sealing sheets 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 closure piece protrusions 16 formed corresponding to the pockets 15 and protruding radially outward, which engage in the pockets 15 in the intended state of the closure piece 9, whereby dialer direction a fuse of 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. In the area of mounting surface 17, the closure piece 9 a extending in the radial direction of the web 18 which formed in the intended state in corresponding engages pre-4 ⁇ provided grooves 19 of the sealing plates 4 at the inner diameter of the sealing plates.
- the sealing plates 4 are moved in the circumferential direction in its intended position.
- the grooves 19 of the sealing plates 4 are two adjacent sealing plates 4 each partially with the form of the receiving surface 17 of the closure piece 9 projecting web 18 is brought into engagement.
- 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 are used to allow movement of the sealing plates 4 during normal operation of the Radschei ⁇ benan angel 1 in the radial direction.
- a significant advantage of the wheel disc assembly 1 is that the sealing plates 4 can be easily and easily assembled and disassembled, even if the blade devices 3 are already or still fixed to the wheel disc 2. Further, the contact surfaces 11 of the holding projections 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 the determ ⁇ mung normal operation of Radularnan Aunt 1 under the action of centrifugal force against the bearing surface 11 support the holding projections ⁇ 10. Thus, the weight of the sealing plates 4 is taken up by the wheel disc 2, resulting in that the connection areas between the wheel disc 2 and the blade means 3 must be less stable and thus can be produced more cheaply.
- the Ver ⁇ closing piece 9 is due to the positive connection between the web 18 of the closure piece 9 and the grooves 19 of the sealing plates 4 secured in a simple manner without additional securing elements in its intended position, whereby a total of a simple structure is achieved.
- said positive connection can also be achieved by means of a depression provided on the closure piece 9 and projections or webs projecting radially from the sealing plates 4.
- a single retaining projection 10 and a single Provide support projection 12, as shown in Figure 5 are provided in the same or similar components with the same reference numerals as in Figures 1 to 4.
- the arrangement shown in FIG. 5 corresponds to the arrangement previously described with reference to FIGS. 2 to 4.
- Figure 6 shows a further alternative embodiment of the arrangement shown in Figures 2 to 4, which differs only DA executed Given that are designed for axially securing the Ver ⁇ connection piece 9 of sealing plates 4 radially inwardly vorste ⁇ rising webs 20 and on the closure piece 9, a correspondingly formed groove 21 is provided, where ⁇ is achieved by a positive connection between the closure piece 9 and the sealing plates in the intended mounted state.
- the arrangements correspond to each other, which is why identical or similar components are provided with the same reference numerals ⁇ .
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 |
---|---|---|---|
EP14177461.2A EP2975218A1 (de) | 2014-07-17 | 2014-07-17 | Radscheibenanordnung |
PCT/EP2015/065656 WO2016008789A1 (de) | 2014-07-17 | 2015-07-09 | Radscheibenanordnung |
Publications (2)
Publication Number | Publication Date |
---|---|
EP3129599A1 true EP3129599A1 (de) | 2017-02-15 |
EP3129599B1 EP3129599B1 (de) | 2019-06-19 |
Family
ID=51205299
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP14177461.2A Withdrawn EP2975218A1 (de) | 2014-07-17 | 2014-07-17 | Radscheibenanordnung |
EP15738025.4A Active EP3129599B1 (de) | 2014-07-17 | 2015-07-09 | Radscheibenanordnung |
Family Applications Before (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP14177461.2A Withdrawn EP2975218A1 (de) | 2014-07-17 | 2014-07-17 | Radscheibenanordnung |
Country Status (5)
Country | Link |
---|---|
US (1) | US10378367B2 (de) |
EP (2) | EP2975218A1 (de) |
JP (1) | JP6367463B2 (de) |
CN (1) | CN106536864B (de) |
WO (1) | WO2016008789A1 (de) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
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 |
---|---|---|---|---|
EP2975219A1 (de) * | 2014-07-17 | 2016-01-20 | Siemens Aktiengesellschaft | Radscheibenanordnung |
EP3561234B1 (de) * | 2018-04-25 | 2020-10-07 | Siemens Aktiengesellschaft | Rotor mit dichtungsanordnung |
Family Cites Families (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5832905A (ja) * | 1981-08-21 | 1983-02-26 | Agency Of Ind Science & Technol | 翼冷却装置 |
JPS5910704A (ja) * | 1982-07-08 | 1984-01-20 | Toshiba Corp | タ−ビン羽根植込部の構造 |
GB9517369D0 (en) * | 1995-08-24 | 1995-10-25 | Rolls Royce Plc | Bladed rotor |
US6190131B1 (en) | 1999-08-31 | 2001-02-20 | General Electric Co. | Non-integral balanced coverplate and coverplate centering slot for a turbine |
GB0423363D0 (en) * | 2004-10-21 | 2004-11-24 | Rolls Royce Plc | Rotor assembly retaining apparatus |
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 |
US9366151B2 (en) * | 2012-05-07 | 2016-06-14 | General Electric Company | System and method for covering a blade mounting region of turbine blades |
EP2964894B1 (de) * | 2013-03-05 | 2019-04-10 | Rolls-Royce North American Technologies, Inc. | Verfahren zur rückhaltung einer segmentierten turbinenabdeckplatte |
-
2014
- 2014-07-17 EP EP14177461.2A patent/EP2975218A1/de not_active Withdrawn
-
2015
- 2015-07-09 US US15/324,871 patent/US10378367B2/en active Active
- 2015-07-09 CN CN201580038923.9A patent/CN106536864B/zh active Active
- 2015-07-09 JP JP2017502645A patent/JP6367463B2/ja not_active Expired - Fee Related
- 2015-07-09 WO PCT/EP2015/065656 patent/WO2016008789A1/de active Application Filing
- 2015-07-09 EP EP15738025.4A patent/EP3129599B1/de active Active
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
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 |
---|---|
US20170211397A1 (en) | 2017-07-27 |
CN106536864A (zh) | 2017-03-22 |
US10378367B2 (en) | 2019-08-13 |
EP3129599B1 (de) | 2019-06-19 |
WO2016008789A1 (de) | 2016-01-21 |
EP2975218A1 (de) | 2016-01-20 |
CN106536864B (zh) | 2018-10-09 |
JP2017522492A (ja) | 2017-08-10 |
JP6367463B2 (ja) | 2018-08-01 |
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