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
  • 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
  • F01D5/326—Locking of axial insertion type blades by other means
• • 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
  • F01D11/00—Preventing or minimising internal leakage of working-fluid, e.g. between stages
  • F01D11/005—Sealing means between non relatively rotating elements
  • F01D11/006—Sealing the gap between rotor blades or blades and rotor
• • 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
• • 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
  • F05D2230/60—Assembly methods
• • 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
  • F05D2230/70—Disassembly methods
• • 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
  • F05D2240/20—Rotors
  • F05D2240/30—Characteristics of rotor blades, i.e. of any element transforming dynamic fluid energy to or from rotational energy and being attached to a rotor
• • 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
  • F05D2260/00—Function
  • F05D2260/30—Retaining components in desired mutual position
• • 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
  • F05D2260/00—Function
  • F05D2260/30—Retaining components in desired mutual position
  • F05D2260/31—Retaining bolts or nuts

Definitions

• the present invention relates to a wheel disc assembly having a wheel disc and a plurality of attached to the wheel disc blade means and a plurality of the
• Wheel disc in a ring groove fixed sealing plates according to the preamble of claim 1.
• Radularnan extracten of the type mentioned are known in the prior art in a variety of configurations, in the usual embodiment, a wheel disc on the outer circumference has a plurality extending in the direction of the disk axis Schaufelfuß techniquenuten. In this vane means are arranged with the blade root. For frontal cover of Schaufelfuß techniquenuten sealing plates are used, which this purpose usually in
• Ring grooves are stored.
• the wheel disc has a circumferential outwardly open inner annular groove in which an axis pointing to the disc axis end of the sealing plate is axially fixed.
• Sealing plate is an inwardly open outer annular groove available.
• the outer annular groove is formed by the circumferentially adjacent vane means.
• the blade devices are inserted into the Schaufelfußabilitynuten the wheel disc, wherein successively, the sealing plates between the two annular grooves are inserted. To the last two
• the generic wheel disc assembly comprises a
• the wheel disk in this case has a blade receiving portion arranged on the outer circumference. At this the vane devices are distributed releasably distributed in the scope. Furthermore, the wheel disc axially spaced from the blade receiving portion has an annular projection. Between the blade receiving portion and the
• Ring projection is arranged an annular groove.
• the sealing plates are facing with a disc axis
• the edge region of the sealing plates adjoins the end of the sealing plates facing the disk axis and extends radially in the height corresponding to its arrangement in the annular groove.
• the invention provides that the annular groove is widened by at least one recess defining a sealing plate mounting area in the axial direction.
• the depression extends from the annular groove in the axial direction in the blade receiving portion and / or into the annular projection.
• Circumferential direction is greater than the length of the sealing plates in the edge region.
• Bucket devices are mounted on the wheel disc, whereby the assembly is made very flexible.
• the sealing plates with the edge region for example, obliquely inserted from above into the recess and then tilt the sealing plate in the direction of the wheel disc.
• the sealing plate can be moved in the circumferential direction along the annular groove. Just as easily can the
• the annular groove is in
• all sealing plates are identically designed as identical parts, whereby the production and storage of the sealing plates are simplified.
• the depression continues to extend in the radial direction to the disc axis pointing. That that the depression over a limited length, the cross section of the annular groove in the axial and in the radial
• the sealing plates can be moved outward in the radial direction and thus be moved to the end position.
• the annular projection on the side facing the annular groove in the region of the depression on a slope wherein the slope is formed so that the annular projection flattening toward the annular groove out.
• a slope also simplifies the insertion and removal of the sealing plates in the region of the recess.
• the annular projection on the side facing the annular groove in the region of the depression has an undercut region in the form of a recess which opens toward the annular groove.
• two recesses are provided, which are formed diametrically opposite in the wheel disc. Thanks to a second recess can during the
• sealing plates can be assembled and disassembled faster. Also conceivable is the arrangement of a plurality of depressions, which
• the annular groove is formed undercut and, viewed in cross-section, has at least one axially in the direction of the
• the retaining projection is either on Schaufelabilityabschitt and / or on the annular projection and is disposed radially outside of the annular groove.
• the embodiment with a circumferential along the annular groove retaining projection with a holding surface arranged thereon.
• the sealing plates in the edge region at least one axially projecting support projection, which with a
• the edge region with the supporting projection presents as a thickening to the radially outwardly of the edge region lying region of the sealing plate.
• the holding surface of the holding projection and the supporting surface of the supporting projection are arranged such that the
• At least one filler is provided, which is arranged in the recess. Through the filler, it is possible unintentional slipping out of the annular groove or a partial deformation of the sealing plate at a
• the filler has an axially extending radially outwardly facing contact surface on which the sealing plate with an inner circumference
• the sealing plate can be supported in the region of the depression on the filling piece and, in particular, in the case of a recess extending radially into the wheel disk, not shift to the disk axis, for example when the disk arrangement is at a standstill.
• the filler is designed such that an existing bevel is filled on the annular projection.
• one-sided existing material gaps prevented and in particular a better support of the filler is given in an axial load through the sealing plate.
• the filler protrudes into existing opening for recess recess in this. Due to the undercut execution in this area through the recess, the radial
• Blade devices in each case a sectionally around the disc axis encircling radially to the disc axis opening towards the annular groove segment. It is provided that the sealing plates are accommodated on the outer circumference in the Ringnutsegmenten and thereby fixed in the axial direction. It is irrelevant whether there are more contours on the sealing plate, which are axially adjacent to the here
• the sealing plates each have one
• Wheel disc assembly holds in the intended position, so prevents a shift in the circumferential direction.
• the sealing plates have a bore and the wheel disc associated openings, which extend through the holes extending connecting elements in the associated openings and are advantageously attached to the sealing plates. Thanks to the fixing of the fasteners to the
• the sealing plates can move radially outward during the intended use of the Radularnan extract under the action of a centrifugal force.
• the present invention provides a method for mounting a wheel disc assembly according to the invention, in which in a first step, all blade devices are attached to the wheel disc, and in another
• Figure 1 is a perspective view of a
• Figure 2 is a perspective view of the wheel in the
• Figure 3 shows a cross section through the wheel disc in the region of the recess
• Figure 4 is a view analogous to FIG. 2 with inserted
• Figure 5 is an enlarged perspective sectional view
• FIG. 6 shows a cross section for the embodiment from FIG. 5
• Figure 7 is a side view of the filler for Fig. 5;
• FIG. 8 is a perspective view of FIG. 5;
• FIG. 9 shows a perspective sectional view analogous to FIG.
• FIG. 5 shows a wheel disc assembly 1 and its components according to a first embodiment of the present invention.
• the wheel disc assembly 1 comprises a wheel disc 2, a plurality of blade means 3 fixed along the outer circumference to a blade receiving portion 24 of the wheel disc 2 in associated axially extending blade root receiving grooves 4, and a plurality
• Blade means 3 in radially spaced annular groove and annular groove segments 6, 7 are held.
• the annular groove 6 is provided in the wheel disc 2 and is bounded axially outwardly by a continuous annular projection 8.
• Opposite is formed in each of the vane devices 3, a Ringnutsegment 7.
• Supporting projection 11 which is provided with a wing 12 11.
• Sealing plate receiving portion defining recesses 13 arranged (of which 13 in the figures, only one recess 13 is shown). The length of the recess 13 in
• Circumferential direction is greater than the width of the sealing plates in the recorded in the annular groove 6 edge region.
• the recess 13 extends in the axial direction and widening the
• the annular projection 8 has on the first
• Ring projection 8 flattening towards the annular groove 6 out.
• the wheel disc assembly 1 further comprises a filling piece 15, which is designed such that it fills the area widened in relation to the annular groove 6 by the recess 13 as well as the area of the slope 14. Furthermore, the filler 15 has an axially facing away from the annular projection 8 projection 16 which extends below a
• Sealing plate extends and thus defines an axially extending contact surface, which is for receiving a
• the sealing plates 5 are each formed identically and each include a bore 17 through which 17 in the intended mounted state of the Radularnan angel 1 is a substantially pin-shaped
• Connecting element 18 extends, the 18 at the assigned
• Sealing plate 5 is fixed and in a formed on the wheel disc 2 opening 19 in the form of a radially
• each sealing plate 5 with its edge region from above into the
• the sealing sheet 5 can move upwards, i. radially outward, moved, then inserted with its outer peripheral edge in the Ringnutsegmente 7 and then in
• Sealing plates 5 set, for example caulked. Now, the sealing plates 5 are secured against accidental displacement in the circumferential direction.
• Wheel disc arrangement acts on the sealing plates 5 a
• Retaining surfaces 10 of the retaining projections 9 of the wheel disc 2 come to rest. In this state, then the wheel disc 2 takes on the forces caused by the weight of the sealing plates 5 forces.
• Radalinan extract 1 is that the sealing plates 5 thanks to the recesses 13 in a simple manner in the assigned annular grooves 6, 7 can be threaded, even if all the blade devices 3 at the
• Wheel disc 2 are mounted, making the assembly is very flexible.
• the sealing plates can just as easily be dismantled. Another advantage is that forces caused by the centrifugal force of the self-weight of the sealing plates 5, are absorbed by the wheel disc 2 thanks to the provided on the wheel disc 2 holding projection 9 and formed on the sealing plates 5 supporting projections 11, whereby the
• FIG. 9 shows an alternative embodiment of a depression 20 and a filler piece inserted into the recess 20
• the recess 20 differs from the sketched recess 13 in that the annular projection on the side facing the annular groove 6 in the region of the depression 20 has an undercut region with a recess 20 opening towards the recess 22.
• the filler 21 is different from the filler 15 in that it also includes the undercut region, i. the
• Recess 22 fills, and that in contrast to the filler 15 no pointing away from the annular projection projection 16 is provided, on which the sealing plates 5 rest.

Landscapes

• Engineering & Computer Science (AREA)
• Mechanical Engineering (AREA)
• General Engineering & Computer Science (AREA)
• Turbine Rotor Nozzle Sealing (AREA)
• Structures Of Non-Positive Displacement Pumps (AREA)

Priority Applications (4)

Applications Claiming Priority (2)

Publications (1)

Family

ID=52574066

Family Applications (1)

Country Status (5)

Cited By (2)

Families Citing this family (2)

Citations (4)

Family Cites Families (8)

• 2015
  • 2015-02-24 EP EP15156321.0A patent/EP3061916A1/de not_active Withdrawn
• 2016
  • 2016-01-11 JP JP2017545675A patent/JP6463848B2/ja not_active Expired - Fee Related
  • 2016-01-11 US US15/546,464 patent/US20180023401A1/en not_active Abandoned
  • 2016-01-11 CN CN201680011811.9A patent/CN107407155A/zh active Pending
  • 2016-01-11 WO PCT/EP2016/050343 patent/WO2016134864A1/de active Application Filing
  • 2016-01-11 EP EP16700547.9A patent/EP3227532A1/de not_active Withdrawn

Patent Citations (4)

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