Turbomachine component arrangement

Abstract

A rotor, for a turbomachine, in particular a gas turbine, having a first flange and a second flange with recesses that are distributed in a direction of distribution, in particular in the peripheral direction, wherein the second flange is fastened to the first flange, in particular detachably, by at least one fastener, which engage in the first of these recesses of the first and second flanges, wherein second ones of these recesses of the first flange, which are free of a fastener, are covered by the second flange.

Claims

1. A component arrangement for a turbomachine, comprising: a first flange and a second flange, each with recesses that are distributed in a peripheral direction of distribution; the second flange being detachably fastened to the first flange by a fastener, which engage in a first of these recesses of the first and second flanges, wherein the first flange includes second ones of the recesses, at least one of the second ones of the recesses of the first flange which are free of a fastener, are covered by the second flange, and wherein the second flange includes at least one second one of the recesses that is free of a fastener and is covered by the first flange.

2. The component arrangement according to claim 1, wherein a third flange with recesses distributed in the direction of distribution and is detachably fastened to the first flange by a fastener, which engage in first recesses of the first, second and third flanges; the second ones of the recesses of the first flange, which are free of a fastener, are covered by the third flange and, on both sides, by the second and third flanges.

3. The component arrangement according to claim 2, wherein second ones of the recesses of the third flange, which are free of a fastener, are covered by the first flange and are aligned with the second ones of the recesses, which are free of a fastener, of the second flange that are covered by the first flange.

4. The component arrangement according to claim 2, wherein, between at least one pair of arrangements of the first flange that are adjacent in the direction of distribution, each of which is composed of one of: one or more, and at most four, of first recesses of the first flange, which are adjacent in the direction of distribution, in which a fastener engages, and a pair of arrangements of the second and/or third flange that are adjacent in the direction of distribution, each of which is composed of one of: one or more and at most four first recesses of the respective flange that are adjacent in the direction of distribution, and in which the fastener engages, an odd number differing by one of the second recesses are arranged.

5. The component arrangement according to claim 2, wherein a total number of the first recesses of the second flange and/or of the third flange is equal to a total number of second recesses of the respective flange, and/or to the total number of first recesses of the first flange.

6. The component arrangement according to claim 2, wherein the first and/or second recesses of the first, second, and/or third flange have inner diameters that differ from one another by at most 10%.

7. The component arrangement according to claim 2, wherein the first flange is configured as part of a rotor disk and the second and/or third flange are configured for connection to an adjacent rotor disk.

8. The component arrangement according to claim 1, wherein at least one of the flanges has arrangements, alternating in the direction of distribution, which are composed of one of: one, two, a plurality of and at most four, second recesses of the respective flange, which are adjacent in the direction of distribution, and arrangements, which are composed of one of one, two, a plurality of and at most four, first recesses of the respective flange, which are adjacent in the direction of distribution.

9. The component arrangement according to claim 8, wherein the first recesses, which are adjacent in the direction of distribution, of these arrangements, which are composed of first recesses, of at least one of the flanges are arranged symmetrically and/or are spaced apart equidistant from one another and/or from adjacent second recesses of these arrangements of the respective flange, which are composed of second recesses, and/or second recesses, which are adjacent in the direction of distribution, of these arrangements, which are composed of second recesses, of at least one of the flanges are arranged symmetrically and/or are spaced apart equidistant from one another and/or from adjacent first recesses of these arrangements of the respective flange, which are composed of first recesses.

10. The component arrangement according to claim 1, wherein a total number of first recesses of the first flange is unequal to and is greater than a total number of second recesses of the first flange by at least 10% and at most 100% greater.

11. The component arrangement according to claim 1, wherein the fastener is a plurality of screws with respective screwed on nuts.

12. The component arrangement according to claim 1, wherein at least one component arrangement is configured and arranged in a gas turbine with at least one rotor.

13. The component arrangement according to claim 1, wherein at least one rotor includes flanges that are detachably fastened to one another by the fastener.

Description

BRIEF DESCRIPTION OF THE DRAWING FIGURES

(1) Further advantageous enhancements of the present invention ensue from the dependent claims and the following description of preferred embodiments. Shown for this purpose, in part schematically, are:

(2) FIG. 1, a meridional section through a part of a component arrangement of a turbomachine in accordance with an embodiment of the present invention;

(3) FIG. 2, a section through a first flange of the component arrangement along the line II-II in FIG. 1; and

(4) FIG. 3, a section through a second flange of the component arrangement along the line III-III in FIG. 1.

DESCRIPTION OF THE INVENTION

(5) FIG. 1 shows a meridional section through a part of a component arrangement of a turbomachine in accordance with an embodiment of the present invention, which includes a machine axis of the turbomachine (horizontal in FIG. 1).

(6) The component arrangement has a (middle) first flange 10 and an (outer) second flange 20 with through-holes 11, 12, 21, 22, which are distributed in the peripheral direction (horizontal in FIGS. 2, 3) around the machine axis, wherein the second flange 20 is fastened or is to be fastened to the first flange 10 detachably by screws 4, which, for this purpose, engage through first through-bores 11 of the first flange 10 and through first through-bores 21 of the second flange 20 of these through-bores of the first and second flange, which are distributed in the peripheral direction, and are screwed with nuts 5, wherein all (other) second through-bores 12 of the first flange 10, which are free of any fasteners, of these through-bores of the first flange 10, which are distributed in the peripheral direction, are covered by the second flange 20.

(7) For this purpose, for clarification, the outlines of the second through-bores 12 of the first flange 10 are indicated as dashed lines in the section of the second flange 20 of FIG. 3.

(8) Conversely, all (other) second through-bores 22 of the second flange 20, which are free of any fasteners, of these through-bores of the second flange 20, which are distributed in the peripheral direction, are covered by the first flange 10.

(9) For clarification, the outlines of the second through-bores 22 of the second flange 20 are correspondingly indicated as dashed lines conversely in the section of the first flange 10 of FIG. 2.

(10) The hole pattern of the third flange 30 is identical to that of the second flange 20, so that reference is made in this regard to the description thereof.

(11) Correspondingly, the third flange 30 has through-bores that are distributed in the peripheral direction, and is to be fastened or is fastened to the first flange 10 detachably by the screws 4, which, for this purpose, engage through first through-bores 31 of these through-bores of the third flange 30, which are distributed in the peripheral direction, as well as through first through-bores 11 of the first flange 10 and through first through-bores 21 of the second flange 20, wherein all (other) second through-bores of the third flange 30 (not seen in the figure), which are free of any fasteners, of these through-bores, which are distributed in the peripheral direction, are covered by the first flange 10.

(12) As can be seen in FIG. 2, the first flange 10 has arrangements that alternate in the peripheral direction, each of which is composed of one of the two recesses 12 of the first flange 10, and arrangements that are each composed of two of the first recesses 11 of this flange 10 in the peripheral direction, through which screws 4 engage: (11-11)-12-(11-11)-12-(11 . . . .

(13) In this case, the first recesses 11 of this arrangement (11-11) that are adjacent in the direction of distribution are spaced apart equidistant from one another in each case or within their arrangement (11-11) as well as from second recesses 12, which are directly adjacent to this arrangement (11-11) or to these first recesses 11 in the direction of distribution, and, conversely, second recesses 12 of these arrangements (11-11), which are adjacent in the direction of distribution, are spaced apart equidistant in each case from first recesses 11, which are directly adjacent to this arrangement or to the second recess 12 in the direction of distribution.

(14) As can be seen in FIG. 3, the second flange 20 has arrangements that alternate in the peripheral direction, each of which is composed of two of the second recesses 22 of the second flange 20 in the peripheral direction, and arrangements that are each composed of two of the first recesses 21 of this flange 20 in the peripheral direction, through which screws 4 engage: (21-21)-(22-22)-(21-21) . . . . The same applies analogously to the identical hole pattern of the third flange 30.

(15) In this case, the first recesses 21 of this arrangement (21-21) that are adjacent in the direction of distribution are spaced apart equidistant from one another in each case or within their arrangement (21-21) and, additionally, second recesses 22 of these arrangements (22-22), which are adjacent in the direction of distribution, are spaced apart equidistant in this case or within their arrangement (22-22) from one another as well as from first recesses 21, which are directly adjacent to this arrangement (22-22) or to second recesses 22 in the direction of distribution.

(16) Viewing FIGS. 2, 3 together shows that, between each pair of arrangements (11-11) of the first flange 10 that are adjacent in the direction of distribution, each of which is composed of two first recesses 11 of the first flange 10 in the direction of distribution, in which screws 4 engage, and a corresponding pair of adjacent arrangements (21-21) (or (31-31) of the second (and third) flange 20 (or 30) that are adjacent in the direction of distribution, each of which is composed of two first recesses 21 (or 31) of this flange that are adjacent in the direction of distribution, and in which screws 4 engage, a number of second recesses 12 or 22 that differs by one are arranged, namely in each case a (first number equal to one of the) second recess(es) 12 and in each case (a second number equal to) two (of the) second recess(es) 22.

(17) As can be seen from the pattern (11-11)-12-(11-11)-12-(11 . . . of the first flange 10, the total number of first recesses 11 is 50% greater than the total number of second recesses 12.

(18) As can be seen from the pattern (21-21)-(22-22)-(21-21)-(22 . . . of the second flange 20, the total number of first recesses 21 is equal to the total number of second recesses 22 and to the total number of first recesses 11 of the first flange 10. The same applies analogously for the identical hole pattern of the third flange 30.

(19) The fasteners seal the first recesses in an airtight manner and, for this purpose, have sealing disks 6.

(20) As is shown in FIGS. 2 and 3 by way of example, it is possible to provide in each of the flanges 10, 20, 30 or else only in one or two of the flanges 10, 20, 30 some or all of the recesses in the form of circular through-holes. In this case, all recesses of all flanges 10, 20, 30 can also have the same shape and size.

(21) In other embodiments, the recesses or some of them can also have other shapes.

(22) Even though, in the above description, exemplary embodiments were discussed, it is noted that a large number of modifications are possible. Moreover, it is noted that the exemplary embodiments are solely examples, which are not intended to limit the protective scope, the applications, and the construction in any way. Instead, the above description provides the person skilled in the art a guideline for implementing at least one exemplary embodiment, with it being possible to make diverse changes, in particular in regard to the function and arrangement of the components described, without departing from the protective scope that ensues from the claims and combinations of features equivalent to these.