# US 2014/0193243 A1 · Seal assembly for turbine system > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2014/0193243 A1 - Document ID: US20140193243A1 - Status: Published application - Kind: A1 - Application number: 13/738,339 - Filed: 2013-01-10 - Published: 2014-07-10 - Earliest claimed: 2013-01-10 - Assignees: General Electric Company - Applicants: General Electric Company - Inventors: Revanth Krishna Nallam; Debabrata Mukhopadhyay; Karthik Srinivasan - Web page: https://patentgrep.com/patent/US20140193243A1 ## CPC - F01D 25/24: Casings (modified for heating or cooling F01D25/14); Casing parts, e.g. diaphragms, casing fastenings (casings for rotary machines or engines in general F16M {; special arrangements in stators dealing with breaking-off of part of rotor F01D21/045}) - F01D 11/02: by non-contact sealings, e.g. of labyrinth type (for sealing space between rotor blade tips and stator F01D11/08) - F01D: NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES (machines or engines for liquids F03; non-positive displacement pumps F04D) ## Abstract The disclosure includes a sealing assembly for a turbine system. In one embodiment, the sealing assembly is for a turbine having a rotor blade and a stator nozzle. The sealing assembly includes a pair of oppositely facing seal teeth including concave surfaces. The pair of oppositely facing seal teeth are positioned on one of the rotor blade and the stator nozzle, and are for sealingly engaging the other of the rotor blade and the stator nozzle during operation of the turbine. ## Claims ### Claim 1 A seal assembly for a turbine having a rotor blade and a stator nozzle, the seal assembly comprising: a pair of oppositely facing seal teeth including concave surfaces, the pair of oppositely facing seal teeth positioned on one of the rotor blade and the stator nozzle for sealingly engaging the other of the rotor blade and the stator nozzle during operation of the turbine. ### Claim 2 (depends on 1) The seal assembly of claim 1, wherein the concave surfaces on each of the pair of oppositely facing seal teeth face in an opposite direction of one another. ### Claim 3 (depends on 1) The seal assembly of claim 1, wherein each of the pair of oppositely facing seal teeth include a substantially convex surface opposite the concave surface. ### Claim 4 (depends on 1) The sealing assembly of claim 1, further comprising at least one fin positioned on the other of the rotor blade and the stator nozzle. ### Claim 5 (depends on 4) The sealing assembly of claim 4, wherein the at least one fin is positioned substantially adjacent one of the pair of oppositely facing seal teeth. ### Claim 6 (depends on 4) The sealing assembly of claim 4, wherein the at least one fin is positioned substantially between the pair of oppositely facing seal teeth. ### Claim 7 (depends on 1) The sealing assembly of claim 1, wherein the pair of oppositely facing seal teeth are positioned on an upstream side of the one of the rotor blade and the stator nozzle, the upstream side relative to an axial fluid flow path through the turbine. ### Claim 8 (depends on 7) The sealing assembly of claim 7, wherein the pair of oppositely facing seal teeth are positioned on a downstream side of the one of the rotor blade and the stator nozzle, the downstream side relative to the axial fluid flow path through the turbine. ### Claim 9 A seal assembly for a turbine having a rotor blade and a stator nozzle, the seal assembly comprising: a first pair of oppositely facing seal teeth positioned on the rotor blade; and a second pair of oppositely facing seal teeth positioned on the stator nozzle, the first pair of oppositely facing seal teeth and the second pair of oppositely facing seal teeth to sealingly engage the rotor blade and the stator nozzle during operation of the turbine. ### Claim 10 (depends on 9) The seal assembly of claim 9, wherein each of the first pair of oppositely facing seal teeth include a concave surface, the concave surfaces facing in an opposite direction of one another, and wherein each of the second pair of oppositely facing seal teeth include a concave surface, the concave surfaces facing in an opposite direction of one another. ### Claim 11 (depends on 10) The seal assembly of claim 10, wherein each of the first pair of oppositely facing seal teeth include a substantially convex surface opposite the concave surface, and wherein each of the second pair of oppositely facing seal teeth include a substantially convex surface opposite the concave surface. ### Claim 12 (depends on 9) The seal assembly of claim 9, wherein the first pair of oppositely facing seal teeth include an outer tooth, and an inner tooth, and wherein the second pair of oppositely facing seal teeth both include an outer tooth, and an inner tooth. ### Claim 13 (depends on 12) The seal assembly of claim 12, wherein the inner tooth of the first pair of oppositely facing seal teeth is positioned substantially between the outer tooth and the inner tooth of the second pair of oppositely facing seal teeth. ### Claim 14 (depends on 12) The seal assembly of claim 12, wherein the outer tooth of the first pair of oppositely facing seal teeth is positioned substantially between the outer tooth and the inner tooth of the second pair of oppositely facing seal teeth. ### Claim 15 (depends on 9) The assembly of claim 9, wherein the first pair of oppositely facing seal teeth are positioned on an upstream side of the rotor blade, the upstream side relative to an axial fluid flow path through the turbine. ### Claim 16 (depends on 15) The assembly of claim 15, wherein the second pair of oppositely facing seal teeth are positioned on a downstream side of the stator nozzle, the downstream side relative to the axial fluid flow path through the turbine. ### Claim 17 (depends on 9) The assembly of claim 9, wherein the first pair of oppositely facing seal teeth are positioned on a downstream side of the rotor blade, the downstream side relative to an axial fluid flow path through the turbine. ### Claim 18 (depends on 17) The assembly of claim 17, wherein the second pair of oppositely facing seal teeth are positioned on an upstream side of the stator nozzle, the upstream side relative to the axial fluid flow path through the turbine. ### Claim 19 A turbine comprising: a rotor blade coupled to a rotor of the turbine; a stator nozzle coupled to a housing of the turbine, the stator nozzle positioned adjacent the rotor blade; and a seal assembly positioned on one of the rotor blade and the stator nozzle for sealingly engaging the other of the rotor blade and the stator nozzle during operation of the turbine, the seal assembly including a pair of oppositely facing seal teeth having concave surfaces. ### Claim 20 (depends on 19) The turbine of claim 19, wherein the concaves surfaces on each of the pair of oppositely facing seal teeth face in an opposite direction of one another.