# US 9,435,216 B2 · Sealing arrangement in an axial turbomachine > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 9,435,216 B2 - Document ID: US9435216B2 - Status: Granted - Kind: B2 - Application number: 14/474,966 - Filed: 2014-09-02 - Published: 2015-03-05 - Granted: 2016-09-06 - Earliest claimed: 2013-09-04 - Assignees: MTU Aero Engines AG - Applicants: MTU Aero Engines AG - Inventors: Frank Stiehler - Web page: https://patentgrep.com/patent/US9435216B2 ## CPC - F01D 11/00: Preventing or minimising internal leakage of working-fluid, e.g. between stages (sealings in general F16J {; sealing arrangements for transition ducts of combustor cans F01D9/023}) - F01D 11/001: {for sealing space between stator blade and rotor} - F16J 15/3288: Filamentary structures, e.g. brush seals - F05D 2240/56: Brush seals - F05D 2250/183: zigzag - F05D 2250/184: sinusoidal - Y02T 50/60: Efficient propulsion technologies, e.g. for aircraft - F01D: NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES (machines or engines for liquids F03; non-positive displacement pumps F04D) - F16J: PISTONS {(specially adapted for dampers F16F9/32)}; CYLINDERS; SEALINGS - F05D: INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS - Y02T: CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION ## Abstract A sealing arrangement (100) in an axial turbomachine between, on the one hand, a rotor (1) and, on the other hand, a stator (3) and/or a housing, including a support device (7, 7′) and a sealing element, whereby the support device (7, 7′) extends essentially in the radial direction (r). In the axial direction (u) of the turbomachine, the support device (7, 7′) has an axial contour that effectuates a stiffening effect for the support device (7, 7′). ## Claims ### Claim 1 A sealing arrangement between: (a) a rotor and (b) a stator or a housing, the sealing arrangement comprising: a support device; a holding plate; and a seal element comprising a wire with bristles wrapped around the wire and a clip holding the wire and bristles together located between the support device and the holding plate, the clip having an inner surface contacting the bristles and an outer surface contacting the support device; the support device extending radially, and, in the axial direction of the turbomachine, having an axial contour stiffening the support device; wherein the support device or the seal element is configured so as to be ring-shaped or segmented in the circumferential direction, wherein the support device is configured so as to have a wavy or zigzag shape in a developed view. ### Claim 2 (depends on 1) The sealing arrangement as recited in claim 1 wherein the seal element is a brush seal. ### Claim 3 (depends on 1) The sealing arrangement as recited in claim 1 wherein the support device is configured so as to have the wavy shape. ### Claim 4 (depends on 3) The sealing arrangement as recited in claim 3 wherein a ratio of the width of the axial contour to the width of the support device is between 2 and 10. ### Claim 5 (depends on 1) The sealing arrangement as recited in claim 1 wherein the support device is configured so as to have the zigzag shape. ### Claim 6 (depends on 5) The sealing arrangement as recited in claim 5 wherein a ratio of the width of the axial contour to the width of the support device is between 2 and 10. ### Claim 7 (depends on 1) The sealing arrangement as recited in claim 1 wherein the support device extends in the radial direction beyond a radial length of the seal element. ### Claim 8 (depends on 1) The sealing arrangement as recited in claim 1 wherein the support device is a brushing device. ### Claim 9 (depends on 1) The sealing arrangement as recited in claim 1 wherein the sealing arrangement is located between a guide vane ring and the rotor. ### Claim 10 (depends on 1) The sealing arrangement as recited in claim 1 wherein the sealing arrangement is located between an area of the housing and the rotor. ### Claim 11 (depends on 1) The sealing arrangement as recited in claim 1 wherein the holding plate and support device are connected by an axial fixation element. ### Claim 12 (depends on 1) The sealing arrangement as recited in claim 1 wherein the support device is a backing plate. ### Claim 13 A sealing arrangement between: (a) a rotor and (b) a stator or a housing, the sealing arrangement comprising: a backing plate; and a seal element backed by the backing plate, the seal element comprising a wire with bristles wrapped around the wire and a clip holding the wire and bristles together; the clip having an inner surface contacting the bristles and an outer surface contacting the backing plate; the backing plate extending radially, and, in the axial direction of the turbomachine, having an axial contour stiffening the support device; wherein the backing plate or the seal element is configured so as to be ring-shaped or segmented in the circumferential direction, wherein the backing plate is configured so as to have a wavy or zigzag shape in a developed view. ### Claim 14 (depends on 13) The sealing arrangement as recited in claim 13 wherein the seal element is a brush seal. ### Claim 15 (depends on 13) The sealing arrangement as recited in claim 13 wherein a ratio of the width of the axial contour to the width of the backing plate is between 2 and 10. ### Claim 16 (depends on 13) The sealing arrangement as recited in claim 13 wherein the backing plate extends in the radial direction beyond a radial length of the seal element. ### Claim 17 (depends on 13) The sealing arrangement as recited in claim 13 wherein the backing plate is a brushing device. ### Claim 18 (depends on 13) The sealing arrangement as recited in claim 13 wherein the backing plate contacts an outside of the clip. ### Claim 19 (depends on 13) The sealing arrangement as recited in claim 13 wherein the holding plate contacts an outside of the clip.