# US 10,871,079 B2 · Turbine sealing assembly for turbomachinery > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 10,871,079 B2 - Document ID: US10871079B2 - Status: Granted - Kind: B2 - Application number: 16/138,062 - Filed: 2018-09-21 - Published: 2019-03-21 - Granted: 2020-12-22 - Earliest claimed: 2017-09-21 - Assignees: Safran Aircraft Engines - Applicants: Safran Aircraft Engines - Inventors: Nicolas Daniel Delaporte; Anthony Pierre Beguin; Didier Noël Durand - Web page: https://patentgrep.com/patent/US10871079B2 ## CPC - F01D 11/122: {with erodable or abradable material (blades having cutting or grinding tips F01D5/20)} - F01D 11/005: {Sealing means between non relatively rotating elements} - F01D 25/246: {Fastening of diaphragms or stator-rings} - F05D 2240/55: Seals - F05D 2260/30: Retaining components in desired mutual position - F01D: NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES (machines or engines for liquids F03; non-positive displacement pumps F04D) - F05D: INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS ## Abstract The invention relates to a sealing assembly for a turbine engine, comprising a wheel mounted inside a sectorised ring carrying an abradable material, having at an axial end an annular groove (14) in which a circumferential rail of the casing is engaged, sealing members being partly engaged in a recess (19) of a circumferential edge of a ring sector and another part thereof being engaged in a recess of a circumferential edge circumferentially opposite a circumferentially adjacent ring sector, characterised in that each sealing member comprises an axial end portion (180a) arranged radially between the circumferential rail and two adjacent ring sectors. ## Claims ### Claim 1 A sealing assembly for a turbine engine, comprising: a first and second adjacent ring sector (5, 5bis) in the circumferential direction configured to carry an abradable material, wherein axial ends of each first and second ring sectors (5, 5bis) comprise a groove (14, 14bis) in which a circumferential portion of a casing (10) is engaged with a sealing member (180) being partly engaged in a recess (19) of the first ring sector (5), and another part thereof being engaged in a recess (19bis) of the second ring sector (5bis), the recess (19) and groove (4) of the first ring sector (5) being respectively arranged circumferentially opposite the recess (19bis) and the groove (4bis) of the second ring sector (5bis), characterised in that the sealing member (180) comprises an axial end portion (180a) arranged radially between the circumferential portion of the casing (10) and the respective grooves (14, 14bis) of the first and second ring sectors (5, 5bis). ### Claim 2 (depends on 1) The sealing assembly according to claim 1, wherein said axial end portion (180a) of the sealing member (180) may be elastically stressed between the circumferential casing portion (10) and the adjacent first and second ring sectors (5bis). ### Claim 3 (depends on 2) The sealing assembly according to claim 2, wherein the recess (19) of each of the first and second ring sectors (5, 5bis) is formed by a slot opening axially, respectively, in the groove (14) of the first and second ring sectors (5, 5bis). ### Claim 4 (depends on 3) The sealing assembly according to claim 3, wherein the sealing member (180) is formed by a plate, said axial end portion (180a) of which is curved in the circumferential direction such that its radially internal face (180c) is concave. ### Claim 5 (depends on 4) The sealing assembly according to claim 4, wherein the groove (14, 14bis) of each of the first and second ring sectors (5, 5bis) comprise a bottom wall, the circumferential end portions of which each comprise a depression (20), these depressions being circumferentially opposite each other and jointly defining an area for receiving said axial end portion (180a) of a sealing member (180). ### Claim 6 (depends on 3) The sealing assembly according to claim 3, wherein the groove (14, 14bis) of each of the first and second ring sectors (5, 5bis) comprise a bottom wall, the circumferential end portions of which each comprise a depression (20), these depressions being circumferentially opposite each other and jointly defining an area for receiving said axial end portion (180a) of a sealing member (180). ### Claim 7 (depends on 2) The sealing assembly according to claim 2, wherein the sealing member (180) is formed by a plate, said axial end portion (180a) of which is curved in the circumferential direction such that its radially internal face (180c) is concave. ### Claim 8 (depends on 7) The sealing assembly according to claim 7, wherein the groove (14, 14bis) of each of the first and second ring sectors (5, 5bis) comprise a bottom wall, the circumferential end portions of which each comprise a depression (20), these depressions being circumferentially opposite each other and jointly defining an area for receiving said axial end portion (180a) of a sealing member (180). ### Claim 9 (depends on 2) The sealing assembly according to claim 2, wherein the groove (14, 14bis) of each of the first and second ring sectors (5, 5bis) comprise a bottom wall, the circumferential end portions of which each comprise a depression (20), these depressions being circumferentially opposite each other and jointly defining an area for receiving said axial end portion (180a) of a sealing member (180). ### Claim 10 (depends on 1) The sealing assembly according to claim 1, wherein the recess (19) of each of the first and second ring sectors (5, 5bis) is formed by a slot opening axially, respectively, in the groove (14) of the first and second ring sectors (5, 5bis). ### Claim 11 (depends on 10) The sealing assembly according to claim 10, wherein the sealing member (180) is formed by a plate, said axial end portion (180a) of which is curved in the circumferential direction such that its radially internal face (180c) is concave. ### Claim 12 (depends on 11) The sealing assembly according to claim 11, wherein the groove (14, 14bis) of each of the first and second ring sectors (5, 5bis) comprise a bottom wall, the circumferential end portions of which each comprise a depression (20), these depressions being circumferentially opposite each other and jointly defining an area for receiving said axial end portion (180a) of a sealing member (180). ### Claim 13 (depends on 10) The sealing assembly according to claim 10, wherein the groove (14, 14bis) of each of the first and second ring sectors (5, 5bis) comprise a bottom wall, the circumferential end portions of which each comprise a depression (20), these depressions being circumferentially opposite each other and jointly defining an area for receiving said axial end portion (180a) of a sealing member (180). ### Claim 14 (depends on 1) The sealing assembly according to claim 1, wherein the sealing member (180) is formed by a plate, said axial end portion (180a) of which is curved in the circumferential direction such that its radially internal face (180c) is concave. ### Claim 15 (depends on 14) The sealing assembly according to claim 14, wherein the groove (14, 14bis) of each of the first and second ring sectors (5, 5bis) comprise a bottom wall, the circumferential end portions of which each comprise a depression (20), these depressions being circumferentially opposite each other and jointly defining an area for receiving said axial end portion (180a) of a sealing member (180). ### Claim 16 (depends on 1) The sealing assembly according to claim 1, wherein the groove (14, 14bis) of each of the first and second ring sectors (5, 5bis) comprise a bottom wall, the circumferential end portions of which each comprise a depression (20), these depressions being circumferentially opposite each other and jointly defining an area for receiving said axial end portion (180a) of a sealing member (180). ### Claim 17 (depends on 16) The sealing assembly according to claim 16, wherein the sealing member (180) has a thickness or radial dimension smaller than the radial dimension of the receiving area. ### Claim 18 (depends on 1) A turbine engine comprising an assembly according to claim 1. ### Claim 19 (depends on 18) The turbine engine according to claim 18, wherein the turbine engine is a turbojet or a turboprop.