Sealing ring and sealing arrangement for two relatively movable stator components

Abstract

The invention relates to a sealing arrangement (01) for sealing a gap (06) which annularly surrounds a rotor axis (04) and is located between two stator components (03a, 03b, 05). To this end, a first stator component (03a, 03b) has a circumferential sealing groove (11) with a left-hand groove flank (12a) and with an opposite right-hand groove flank (12b). The second stator component (05), which is situated opposite the sealing groove (12), can be moved axially and radially to a limited extent relative to the first stator component (03a, 03b). Furthermore, a sealing ring (07) which can be moved in the sealing groove (11) is required, which sealing ring (07) has ring surfaces (13a, 13b) which bear against the groove flanks (12a, 12b). In the sealing arrangement (01) according to the invention, it is provided that the second stator component (05) has a left-hand receptacle (14) with a left-hand receiving surface (15) and a right-hand receptacle (17) with a right-hand receiving surface (18). Here, the sealing ring (07) is mounted movably in the receptacles (14, 17) and, to this end, has bearing surfaces (16, 19) which bear against the receiving surfaces (15, 18).

Description

2024PF00221 Foreign version 1 Description TITLE Sealing ring and sealing arrangement for two relatively movable stator components TECHNICAL AREA

[0001] The invention relates to a sealing arrangement and a sealing ring for sealing a gap between two stator components surrounding a rotor axis, which are slightly displaceable relative to each other. BACKGROUND

[0002] Various solutions for sealing gaps are known in the current state of technology. Particularly in gas turbines, thermal expansion causes various stator components to shift relative to one another. Brush seals are frequently used to seal between relatively displaceable stator components. These seals provide a high degree of sealing while maintaining sufficient flexibility to compensate for the relative changes between the stator components.

[0003] Although such brush seals have been extensively tested and reliably provide a largely complete seal, a slight leakage cannot be prevented depending on the pressure difference.

[0004] An alternative solution for sealing two stator components with slight relative movement is proposed in US 7798768 B2 and EP 1245790 A1. These designs employ an L-shaped seal to seal the gap between the stator components. Each flank of the L-shaped seal engages in a corresponding groove in one of the two stator components, with each flank allowing for movement along its respective side. 2024PF00221 Foreign version 2

[0005] Given a pressure difference on both sides of the gap between the stator components, this leads to the two flanks of the L-shaped seal being pressed against the respective flank of the respective groove in the stator components, so that an advantageous seal can be achieved.

[0006] The L-shaped seal essentially solves the problem of insufficient sealing of brush seals. A disadvantage of this design is that, due to the L-shape of the seal and the resulting approximately 90° angled flanks to each other, installation in the two grooves of the two adjacent stator components requires a specific installation sequence and, in particular, necessitates the division of at least one of the stator components along the rotor axis into an upper and a lower part. SUMMARY OF THE INVENTION

[0007] The object of the present invention is therefore to ensure an advantageous seal between two stator components of a gas turbine and to facilitate installation.

[0008] The problem is solved by an embodiment of a sealing arrangement according to the invention of claim 1. A compressor with a corresponding sealing arrangement is specified in claim 10 and a gas turbine is specified in claim 11. Advantageous embodiments are the subject of the dependent claims.

[0009] The sealing arrangement enables the sealing of a gap surrounding a rotor axis in a ring-like manner and located between two stator components. For this purpose, a first stator component has a circumferential sealing groove with a left-hand groove flank and an opposing right-hand groove flank. The second stator component, located opposite the sealing groove, is axially and radially displaceable to a limited extent relative to the first stator component. Furthermore, a sealing ring, which is displaceable within the sealing groove and has annular surfaces in contact with the groove flanks, is required. 2024PF00221 Foreign version 3

[0010] The design provides that the second stator component has a left-hand receptacle with a left-hand receptacle surface and a right-hand receptacle with a right-hand receptacle surface. The sealing ring is slidably mounted in the receptacles and has contact surfaces that abut the receptacle surfaces for this purpose.

[0011] According to the invention, installation is facilitated by making at least one of the two stator components split along the sealing groove or the mountings. DESCRIPTION OF THE INVENTION

[0012] A sealing arrangement of this type serves to seal a gap between two stator components. The specific assembly containing the stator components in question is initially irrelevant. The sealing arrangement is particularly preferred for use in axial compressors or gas turbines.

[0013] In any case, the stator components are designed to surround a rotor axis in a ring-like fashion, with a gap between the two stator components that must be sealed. Furthermore, it must be considered that, as intended, a relative displacement—i.e., axial and / or radial displacement—of the two stator components may occur. This relative displacement leads to a change in the position and / or distance of the gap between the two stator components.

[0014] It is assumed that the displacement is small in relation to the size of the stator components. The possible displacement determines the necessary measures for sealing the gap using the solution according to the invention. Whether a relative displacement exists in the circumferential direction is irrelevant for the sealing arrangement.

[0015] The generic sealing arrangement comprises a first Stator component adjacent to the gap to be sealed. This is in the 2024PF00221 Foreign version The first stator component requires a circumferential sealing groove, which is open towards the gap. This sealing groove has a left and an opposing right groove flank. The shape of the circumferential groove flanks is initially irrelevant. The sealing groove defines a groove direction.

[0016] Furthermore, a second stator component, also adjacent to the gap, is required. Therefore, the second stator component is arranged section by section opposite the sealing groove.

[0017] As is typical, a sealing ring is located in the gap between the two stator components, which is mounted in the sealing groove. The sealing ring has opposing annular surfaces, each of which rests against a groove flank; that is, a left annular surface of the sealing ring rests against a left groove flank of the first stator component, and a right annular surface of the sealing ring rests against a right groove flank of the first stator component.

[0018] When both ring surfaces are positioned opposite each other on the respective groove flanks, it is not required that the sealing ring be installed in the sealing groove without any play. Rather, some play is permissible, since the seal between the ring surface and the groove flank only occurs on one side of the sealing groove, corresponding to the pressure difference on both sides of the sealing ring. However, the sealing ring must be secured in the sealing groove by the opposing arrangement of the ring surfaces on both sides of the groove flanks.

[0019] The design calls for the use of a rigid sealing ring that seals against the second stator component. For this purpose, the second stator component has a left and a right receptacle, with the sealing ring being slidably mounted in both receptacles in one direction. To ensure the relative slidability of the two stator components while simultaneously sealing the gap, the receptacle direction must be oriented perpendicular to the groove direction. This does not require an exact 90° offset between the receptacle direction and the groove direction, but the angle between the two directions should be at least 80°. 2024PF00221 Foreign version 5

[0020] To support the sealing ring in the two receptacles, it is necessary to provide receiving surfaces on both receptacles. Therefore, the left receptacle has a left receiving surface, and the right receptacle has a right receiving surface. Similar to the support of the sealing ring in the sealing groove, the sealing ring is supported in the receptacles by the arrangement of corresponding contact surfaces on the sealing ring against adjacent receiving surfaces of the second stator component. That is, a left contact surface of the sealing ring rests against a left receiving surface, and a right contact surface of the sealing ring rests against a right receiving surface of the second stator component.

[0022] It is advantageous to consider the pressure difference so that the receiving surfaces and the contact surfaces are arranged on the side of the sealing ring where the lower pressure exists. This ensures secure contact between the two contact surfaces and the two receiving surfaces due to the pressure difference. Furthermore, this prevents the sealing ring from tilting relative to the second stator component and, consequently, usually also relative to the first stator component.

[0023] According to the invention, flexible installation of the sealing ring is made possible by splitting at least one of the two stator components at the sealing ring.

[0024] In a first embodiment of the invention, the first stator component is divided into a left stator part and a right stator part, with the division occurring along the sealing groove. In this respect, the left groove flank is located on the left stator part and the right groove flank on the right stator part. Thus, the sealing ring can be positioned with its right annular surface against the right groove flank of the right stator part, and subsequently, assembly with the left stator part can take place with the left annular surface contacting (possibly with clearance) the left groove flank of the left stator part (or vice versa). 2024PF00221 Foreign version 6

[0025] In a second embodiment according to the invention, the division of the second stator component along the receptacles with a slot-side stator part and an outer stator part is particularly preferred in the use of an L-shaped sealing ring.

[0026] Furthermore, it can be provided that both the first stator component is divided along the sealing groove and the second stator component is divided along the mountings.

[0027] The newly developed sealing arrangement enables an advantageous seal between two stator components while maintaining a simple design. Only the specific sealing ring and the required two-part bearing of the sealing ring in the second stator component are required.

[0028] Advantageously, the receiving surfaces are designed to be flat, so that a displacement of the sealing ring in the receiving direction does not alter the sealing effect due to the contact of the contact surfaces against the receiving surfaces. That is, the receiving surfaces extend in the receiving direction.

[0029] It is both advantageous and easier to manufacture if the opposing groove flanks are flat and parallel to each other. In this respect, the groove flanks extend in the direction of the groove.

[0030] The contact surfaces and / or the ring surfaces are simply made flat. In the case of flat receiving surfaces or groove flanks, it is also possible to make the contact surfaces or the ring surfaces convex.

[0031] In any case, it is advantageous if the contact surfaces and / or the ring surfaces are shorter than their respective adjacent surfaces, ensuring consistent contact between the contact surfaces and the ring surfaces. Conversely, the receiving surfaces and / or groove flanks should be sufficiently long so that... 2024PF00221 Foreign version 7. Consistent alignment of the adjacent surfaces is ensured throughout the entire displacement path. This means that the receiving surfaces and / or the groove flanks must be longer than the contact surfaces or ring surfaces plus the respective displacement path in the receiving direction or in the groove direction. In the event of wear, this is therefore primarily to be expected at the sealing ring, which is easier to replace.

[0032] Furthermore, it can be provided that the adjacent receiving surfaces arranged on one side of the sealing ring are not geometrically separated from each other, but rather form two areas of a continuous surface. In this case, the adjacent (left and right) receiving surfaces advantageously lie in a common plane. It is also possible that the receiving surfaces are arranged in a common plane but separately from each other.

[0033] Regarding the groove direction and the intake direction, a cross-section through the sealing assembly along the rotor axis is assumed. This means that the groove direction and the intake direction do not refer to the circumferential direction, and that the groove direction and the intake direction have no component in a tangential direction.

[0034] With the possible displacement in the slot direction and in the receiving direction, where both are oriented transversely to each other, the possible relative displacement of the two stator components to each other results automatically in both the axial and radial directions. In a first variant, the design of the components is advantageously simplified if the slot direction is axial and the receiving direction is radial. However, it is particularly advantageous if the slot direction is radial and the receiving direction is axial.

[0035] Depending on the assembly method, it may be provided that one of the stator components and the sealing ring are manufactured as a single piece, with assembly taking place in the axial direction. Regardless of the division according to the invention of at least one stator component along the sealing ring, it is advantageous if the 2024PF00221 Foreign version 8. The first stator component and / or the second stator component and / or the sealing ring are divided along the rotor axis into an upper part and a lower part. Thus, for example, the rotor can be assembled into the lower parts of the sealing assembly, followed by the assembly of the upper parts of the sealing assembly.

[0036] Furthermore, it may be provided that a further subdivision of the first stator component and / or the second stator component and / or the sealing ring is present in the circumferential direction into several segments.

[0037] With at least one circumferentially split stator component and at least one circumferentially split sealing ring, it is generally possible to insert one half of the sealing ring into the sealing groove of the first stator component or into the receptacles of the second stator component circumferentially. Subsequently, the first stator component with the sealing ring can be mounted to the second stator component, or vice versa. If both stator components and the sealing ring are divided into two halves in the circumferential direction, it is possible to insert the divided sealing ring directly into the sealing groove of the first stator component and at the same time into the receptacles of the second stator component in the circumferential direction.

[0039] Given the need to provide opposing annular surfaces on the sealing ring, as well as potential displacement in the groove direction and along the contact surfaces in the receiving direction, it is particularly advantageous if the sealing ring has an L-shaped or T-shaped cross-section. This design simplifies both the assembly and the manufacturing, especially of the sealing ring.

[0040] For advantageous mounting of the sealing ring in the two receptacles, and considering the orientation of the receptacle direction transverse to the groove direction, it is particularly advantageous if either a 2024PF00221 Foreign version 9. A left-hand, groove-side receiving surface located on the side of the sealing groove and an opposite left-hand outer receiving surface are present, or alternatively, a right-hand groove-side receiving surface and an opposite right-hand outer receiving surface are present on the right-hand receptacle. This ensures reliable support of the sealing ring in the receptacles, even if, for example, there is no pressure differential when the system is at rest.

[0041] Furthermore, it may be provided that on the left receptacle there is a left groove-side receiving surface located on the side of the sealing groove and an opposite left outer receiving surface, and on the right receptacle there is a right groove-side receiving surface and an opposite right outer receiving surface.

[0042] In the case of opposing (groove-side and outer) receiving surfaces on the second stator component, and the sealing ring being supported in the receptacles by means of respective contact surfaces on the sealing ring at adjacent receiving surfaces, corresponding contact surfaces must be provided on the sealing ring. If two receiving surfaces are present on the left receptacle, a left groove-side contact surface of the sealing ring rests against a left groove-side receiving surface of the second stator component, and a left outer contact surface of the sealing ring rests against a left outer receiving surface of the second stator component.Similarly, if there are two opposing right-hand receiving surfaces, it is necessary to provide for a right-hand groove-side contact surface of the sealing ring against a right-hand groove-side receiving surface of the second stator component and a right-hand outer contact surface of the sealing ring against a right-hand outer receiving surface of the second stator component.

[0043] When the mounting surfaces are positioned opposite each other on the respective receiving surfaces, it is not required that the sealing ring be installed without any play in the receiving surfaces. Rather, some play may be permissible or even necessary, as the seal between the mounting surfaces and the 2024PF00221 Foreign version 10 The receiving surfaces are located only on one side of the receptacles, corresponding to the pressure difference on both sides of the sealing ring. However, the sealing ring's positional stability in the receptacles should be ensured by the arrangement of the contact surfaces on both sides, opposite their corresponding bearing surfaces, particularly during assembly and periods of standstill without a pressure difference. With opposing receiving surfaces or contact surfaces in the left and / or right receptacle, it must also be considered that, due to a greater distance in the second stator component from the groove-side receiving surface to the outer receiving surface, different radial expansions can occur under thermal loads, which must be accounted for as clearance in the receptacles.

[0045] It is particularly advantageous to divide the second stator component along the mounting surfaces into a slot-side stator part and an outer stator part. This allows, for example, the sealing ring to be positioned first on the outer stator part, followed by the assembly of the inner stator part, so that the contact surfaces (possibly with clearance) meet the mounting surfaces. With an advantageous division of the second stator component, comprising a slot-side stator section and an outer starter section, it is further possible, particularly to compensate for thermal expansion, to allow the slot-side stator section to shift relative to the outer starter section in the slot direction. The seal must also be ensured between the slot-side stator section and the outer starter section. For this purpose, the slot-side stator section has a contact section and the outer stator section a support section, with the contact section sealingly abutting the support section.

[0047] It may be designed so that the system section, in the form of a ring-shaped protrusion, engages a ring-shaped depression, thus preventing displacement in the recording direction. It may also be designed so that, for example, a screw connection is made in the recording direction. 2024PF00221 Foreign version 11

[0943] In any case, it is assumed that displacement between the slot-side stator part and the outer stator part occurs only to a very small extent due to thermal expansion, and that the actual displacement occurs between the first stator component and the second stator component. Therefore, it is advantageous if the permissible relative displacement in the slot direction between the sealing ring and the first stator component is at least twice as large as the permissible displacement between the slot-side stator part and the outer stator part. A factor of 4 between the permissible displacement between the sealing ring and the first stator component and the permissible displacement between the slot-side stator part and the outer stator part is particularly advantageous. Alternatively, the second stator component can be designed as a split, with a left and a right stator section, with the division occurring between the left and right receptacles. This allows, for example, the sealing ring to be inserted first into the left receptacle of the left stator section, and then the sealing ring, along with the left stator section, to be inserted into the right receptacle of the right stator section.

[0050] Preferably, the second stator component is divided into a left stator section and a right stator section with a T-shaped sealing ring. Furthermore, the sealing arrangement has advantageous dimensions that ensure a secure position of the sealing ring in the sealing groove and the receptacles, while maintaining a good seal and allowing for movement. For this purpose, a support length is considered, which specifies the distance between the opposite ends of the contact surface of the left contact surface on the left receptacle surface and the contact surface of the right contact surface on the right receptacle surface. The support length is measured in the receptacle direction. The support length thus represents the length of the support provided to the sealing ring by the receptacle surfaces of the second stator component. 2024PF00221 Foreign version 12. Furthermore, a groove spacing is considered, which specifies the distance between the contact surface of the ring faces on the groove flanks and the adjacent outer contact surface. The adjacent outer contact surface is that of the left outer contact surface and the right outer contact surface which, viewed in the direction of the groove, is located closer to the sealing groove. The groove spacing is measured in the groove direction. In this respect, the groove spacing essentially determines the lever arm that can cause the sealing ring to tilt in the grooves if there were no groove-side support in the grooves.

[0054] When designing the sealing arrangement, and in particular the sealing ring, it is advantageous to ensure that the support length corresponds to at least 0.8 times the groove spacing. It is especially advantageous if the support length corresponds to at least the groove spacing. A support length exceeding this, particularly 1.5 times the groove length, is considered unnecessary. [0055j The sealing arrangement is particularly advantageous for sealing a gap between two stator components of a compressor. A compressor of this type initially comprises a compressor rotor to which a plurality of impeller blade assemblies are attached. Furthermore, a compressor housing is required to which a plurality of guide vane assemblies are attached axially offset from the impeller blade assemblies. Typically, at least the last guide vane assembly has an inner ring surrounding the compressor rotor. Following the compressor blades, a compressor diffuser is located at the compressor outlet. This diffuser has an outer diffuser part and an inner diffuser part on both sides of the flow path. The inner diffuser part is arranged directly adjacent to the inner ring.

[0050] Furthermore, it may be provided that a rotor cover is arranged between the inner ring and the compressor rotor and / or between the diffuser inner part and the compressor rotor. 2024PF00221 Foreign version 13

[0057] The use of the sealing arrangement according to the invention leads to the realization of a compressor according to the invention, wherein in a first variant the inner ring forms a stator component and the diffuser inner part forms the other stator component of the sealing arrangement with an intermediate sealing ring.

[0058] In a second variant, the compressor according to the invention is formed in which the rotor cover forms one stator component and the inner ring forms the other stator component with an intermediate sealing ring.

[0059] In a third variant, the rotor cover forms one stator component and the diffuser inner part the other stator component with an intermediate sealing ring to realize a compressor according to the invention.

[0060] Furthermore, the sealing arrangement according to the invention can be used to seal a gap between two stator components in a gas turbine. The stator components are particularly preferably components of the compressor of the gas turbine.

[0061] Overall, the invention represents a significant improvement in sealing technology, which is crucial for use in high-performance machines such as compressors and gas turbines where high component temperatures and, in particular, differing thermal expansions are present. The sealing arrangement offers a robust solution to the challenges associated with sealing the complex gaps between stationary components in such machines. BRIEF DESCRIPTION OF THE DRAWINGS

[0062] FIG 1 schematically sketches a first embodiment of a sealing arrangement 01 according to the invention with two stator components 03, 05 and a sealing ring 07 arranged in the gap 06.

[0063] FIG 2 shows the second stator component 05 as shown in FIG. 1. 2024PF00221 Foreign version 14

[0064] FIG 3 shows the sealing ring 07 for the embodiment shown in FIG. 1.

[0065] FIG 4 shows the first stator component 03 for the embodiment shown in Fig. 1, consisting of a first stator part 03a and a second stator part 03b.

[0066] FIG 5 schematically sketches a second embodiment of a sealing arrangement 21 according to the invention with two stator components 23, 25 and a sealing ring 27 arranged in the gap 06.

[0067] FIG 6 shows the second stator component 25 for the embodiment shown in FIG. 5, consisting of a slot-side stator part 25a and an outer stator part 25b.

[0068] FIG 7 shows the sealing ring 27 for the embodiment shown in FIG. 5.

[0069] FIG 8 shows the first stator component 23 as shown in FIG. 5.

[0070] Figure 1 shows an exemplary first embodiment of a sealing arrangement according to the invention. The arrangement of a first stator component 03 (03 comprising 03a and 03b) adjacent to a second stator component 05 is shown. These 03 and 05 surround a rotor 02 and a rotor shaft 04, respectively, in a ring-like manner.

[0071] A gap 06 is located between the two stator components 03 and 05, and a sealing ring 07 is used to seal this gap. This sealing ring 07 engages with both stator components 03 and 05, thus sealing the gap 06.

[0072] For a detailed illustration of the second stator component 05, refer to Figure 2. The sealing ring 07 is shown in Figure 3. Figure 4 shows the first stator component 03.

[0073] In the first stator component 03 there is a sealing groove 11 with a left groove flank 12a and a parallel opposite right groove flank 12b 2024PF00221 Foreign version 15 arranged. The groove flanks 12a, 12b extend in the circumferential direction as well as in a groove direction, wherein in this embodiment the groove direction corresponds to the radial direction.

[0074] Furthermore, in this example, the first stator component 03 is designed in two parts and is divided in the area of ​​the sealing groove 11. Thus, a left stator part 03a with the left groove flank 12a and a right stator part 03b with the right groove flank 12b are present.

[0075] The sealing ring 07 is slidably mounted in the sealing groove 11 of the first stator component 03 in the direction of the groove. For this purpose, the sealing ring 07 has a left annular surface 13a and a parallel, opposite right annular surface 13b. The left annular surface 13a is designed to contact the left groove flank 12a, and the right annular surface 13b is designed to contact the right groove flank 12b. A small amount of play is provided to prevent jamming in the sealing groove 11.

[0076] The second stator component 05 has a left receptacle 14 and a right receptacle 17, in which the sealing ring 07 is received. The left receptacle 14 has a left outer receiving surface 15b on its radially outer side and a left groove-side receiving surface 15a on the side facing the rotor axis. Similarly, the right receptacle 17 has a right groove-side receiving surface 18a and a parallel, opposite right outer receiving surface 18b. The four receiving surfaces 15, 18 extend circumferentially and in a receiving direction, which in this embodiment corresponds to the axial direction. [OO77j For assembly, the sealing ring 07 can be inserted axially into the second stator component 05. For this purpose, the sealing ring 07 has contact surfaces 16, 19 adjacent to the receiving surfaces 15, 18. Thus, a left outer contact surface 16b rests against a left outer receiving surface 15b and a right outer contact surface 19b rests against a right outer receiving surface 2024PF00221 Foreign version 16 18b and a left groove-side contact surface 16a on a left groove-side receiving surface 15a and a right groove-side contact surface 19a on a right groove-side receiving surface 18a. A slight clearance is also provided to prevent the sealing ring 07 from jamming in the receptacles 14, 17 of the second stator component 05.

[0078] In its installed state, the sealing ring 07 thus has a slight degree of displacement in the receptacles 14, 17 of the second stator component 05 in the receptacle direction and a slight degree of displacement in the sealing groove 11 of the first stator component 03 in the groove direction. This displacement of the sealing ring 07 allows for a relative displacement of the first stator component 03 relative to the second stator component 05. Nevertheless, the sealing effect can be ensured despite this displacement.

[0079] Figure 5 shows an exemplary second embodiment of a sealing arrangement according to the invention. The arrangement of a first stator component 23 adjacent to a second stator component 25 (23 comprising 25a and 25b) is shown. These 23 and 25 surround a rotor 02 and a rotor shaft 04, respectively, in an annular fashion. A gap 06 is located between the two stator components 23 and 25, and a sealing ring 27 is used to seal the gap 06. This sealing ring 27 engages with both stator components 23 and 25, thus sealing the gap 06. For a detailed illustration of the second stator component 25, reference is made to Figure 6. The sealing ring 27 is shown in Figure 7. Figure 8 shows the first stator component 23. The first stator component 23 is designed analogously to the previous example, but without a division. In this respect, reference is made to previous descriptions. 2024PF00221 Foreign version 17 In the sealing groove 11 of the first stator component 23, the sealing ring 27 is slidably mounted in the groove direction, in accordance with the previous embodiment. The second stator component 25 has a left receptacle 34 and a right receptacle 37, in which the sealing ring 27 is received. The left receptacle 34 has a left groove-side receiving surface 35a on the side facing the rotor axis. The right receptacle 37 has a right groove-side receiving surface 38a and a parallel, opposite right outer receiving surface 38b. The three receiving surfaces 35, 38 extend circumferentially and in a receiving direction, with the receiving direction corresponding to the axial direction in this embodiment.

[0085] Analogous to the previous example, the sealing ring 27 can be inserted axially into the second stator component 25 for assembly, with the sealing ring 27 having contact surfaces 36, 39 adjacent to the receiving surfaces 35, 38. In this respect, a right outer contact surface 39b rests against a right outer receiving surface 38b, a left groove-side contact surface 36a rests against a left groove-side receiving surface 35a, and a right groove-side contact surface 39a rests against a right groove-side receiving surface 38a. A slight clearance is also provided to prevent the sealing ring 27 from jamming in the receptacles 34, 37 of the second stator component 25. [00861 In contrast to the first embodiment, the second embodiment provides that the second stator component 25 is designed in two parts, separated by the two receptacles 34, 37, and thus comprises a slot-side stator part 25a and an outer stator part 25b. Furthermore, reduced displacement between the slot-side stator part 25a and the outer stator part 25b in the slot direction is permitted. For sealing, the slot-side stator part has a contact section 33, which rests against a support section 32 of the outer stator part 25b in the receptacle direction and is displaceable in the slot direction. This further compensates for thermal expansion between the outer stator part 25b and the inner stator part 25a. 2024PF00221 Foreign version 18 REFERENCE MARK LIST 01 Sealing arrangement 02 Rotor 03a left stator part 03b right stator part 04 Rotor axis 05 second stator component 06 column 07 Sealing ring 11 Sealing groove 12a left groove flank 12b right groove flank 13a left ring surface 13b right ring surface 14 left image 15a left groove-side receiving surface 15b left outer receiving surface 16a left groove-side contact surface 16b left outer contact surface 17 right recording 18a right-hand groove-side receiving surface 18b right outer receiving surface 19a right groove-side mounting surface 19b right outer mounting surface 22 groove spacing 24 support length 21 Sealing arrangement 23 first stator component 25a slot-side stator part 25b outer stator part 27 Sealing ring 2024PF00221 Foreign version 19 32 Support section 33 Plant section 34 left mounting 35a left groove-side mounting surface 36a left groove-side mounting surface 37 right recording 38a right groove-side receiving surface 38b right outer receiving surface 39a right groove-side contact surface 39b right outer mounting surface

Claims

2024PF00221 Foreign version 20 Claims What is claimed:

1. Sealing arrangement (01, 31) for sealing a gap (06) surrounding a rotor shaft (04) in an annular manner comprising - a first stator component (03a, 03b, 31) which (03a, 03b, 31) has a circumferential sealing groove (11) pointing towards the gap (06) with a left groove flank (12a) and with an opposing right groove flank (12b); and - a second stator component (05, 35a, 35b), which (05, 35a, 35b) is arranged opposite the sealing groove (12) and is axially and radially displaceable to a limited extent relative to the first stator component (03a, 03b, 31) and has a left receptacle (14, 34) with a left receiving surface (15a, 15b, 35a) and a spaced-apart right receptacle (17, 37) with a right receiving surface (18a, 18b, 38a, 38b); and - a sealing ring (07, 37) which (07, 37) is displaceably mounted in the sealing groove (11) in a groove direction and has annular surfaces (13a, 13b) abutting the groove flanks (12a, 12b) and is displaceably mounted in the receptacles (14, 17, 34, 37) in a receiving direction transverse to the groove direction and has contact surfaces (16, 19, 36, 39) abutting the receiving surfaces (15, 18, 35, 38); characterized in that the first stator component (03a, 03b) is divided along the sealing groove (11) into a left stator part (03a) with the left groove flank (12a) and a right stator part (03a) with the right groove flank (12b) and / or the second stator component (25a, 25b) is divided along the receptacles (34, 37) into a groove-side stator part (25a) and an outer stator part (25b). 2024PF00221 Foreign version 21 2. Sealing arrangement (01 , 31 ) according to claim 1 , wherein the groove flanks (12a, 12b) and / or the annular surfaces (13a, 13b) extend in the groove direction; and / or wherein the receiving surfaces (15, 18, 35, 38) and / or contact surfaces (16, 19, 36, 39) extend in the receiving direction.

3. Sealing arrangement (01 , 31) according to claim 1 or 2, wherein the groove direction is radial and the receiving direction is axially oriented; or wherein the groove direction is axially oriented and the receiving direction is radially oriented.

4. Sealing arrangement (01 , 31) according to one of claims 1 to 3, wherein the first stator component (03a, 03b, 31) and / or the second stator component (05, 35a, 35b) and / or the sealing ring (07, 37) is divided along the rotor axis (04) into an upper part and a lower part.

5. Sealing arrangement (01 , 31) according to one of claims 1 to 4, wherein the sealing ring (07, 37) has an L-shaped or T-shaped cross-section.

6. Sealing arrangement (01 , 31) according to one of claims 1 to 5, wherein the left receptacle (14) has a left groove-side receiving surface (15a) and an opposite left outer receiving surface (15b); and / or wherein the right receptacle (17, 37) has a right groove-side receiving surface (18a, 38a) and an opposite right outer receiving surface (18b, 38b).

7. Sealing arrangement (31) according to claims 1 to 6, wherein the groove-side stator part (25a) has a contact section (33) and the outer stator part (25b) has a support section (32) abutting the contact section (33). 2024PF00221 Foreign version 22 8. Sealing arrangement (31) according to claim 7, wherein the system section (33) with the groove-side stator part (25a) is displaceable relative to the support section (32) with the outer stator part (25b) in the groove direction.

9. Sealing arrangement (31) according to claim 8, wherein the permissible displacement of the sealing ring (27) relative to the first stator component (23) is at least 2 times, in particular at least 4 times, the permissible displacement of the slot-side stator part (25a) relative to the outer stator part (25b).

10. Compressor - with a compressor rotor which includes multiple impeller rings, and - with a compressor housing, and - with a plurality of guide vane rings attached to the compressor housing, wherein at least one last guide vane ring has an inner ring, and - with a compressor diffuser which is arranged at the outlet of the compressor and comprises a diffuser outer part and a diffuser inner part, wherein the diffuser inner part is arranged adjacent to the inner ring, and - optionally with a rotor cover arranged between the compressor rotor and the diffuser inner part and / or the inner ring, characterized by a sealing arrangement according to one of the preceding claims, wherein the inner ring forms one stator component and the diffuser inner part the other stator component; or wherein the rotor cover forms one stator component and the inner ring the other stator component; or wherein the rotor cover forms one stator component and the diffuser inner part the other stator component. 2024PF00221 Foreign version 23 11. Gas turbine comprising a sealing arrangement according to one of the claims 1 to 9 or a compressor according to claim 10.

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