# US 2018/0320710 A1 · Sealing System, Turbomachine With A Sealing System And Method For Cleaning The Same > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2018/0320710 A1 - Document ID: US20180320710A1 - Status: Published application - Kind: A1 - Application number: 15/970,625 - Filed: 2018-05-03 - Published: 2018-11-08 - Earliest claimed: 2017-05-05 - Assignees: MAN Diesel & Turbo SE - Applicants: MAN Diesel & Turbo SE - Inventors: Michael BETSCHART; Simon Fischer; Marcel Rosenberger; Roger Suter - Web page: https://patentgrep.com/patent/US20180320710A1 ## CPC - F04D 29/705: {Adding liquids} - F01D 11/04: using sealing fluid, e.g. steam - F01D 11/10: using sealing fluid, e.g. steam - F01D 25/002: {Cleaning of turbomachines} - F04D 29/124: {with special means for adducting cooling or sealing fluid} - F16J 15/3404: {and characterised by parts or details relating to lubrication, cooling or venting of the seal} - F05D 2220/40: in turbochargers - F05D 2260/607: Preventing clogging or obstruction of flow paths by dirt, dust, or foreign particles - F04D: NON-POSITIVE-DISPLACEMENT PUMPS (engine fuel-injection pumps F02M; ion pumps H01J41/12; electrodynamic pumps H02K44/02) - 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 ## Abstract A sealing system of a turbomachine for sealing a rotor of the turbomachine relative to a stator of the turbomachine, having a rotor-side component rotating together with the rotor, a stator-side component that is stationary together with the stator, and a dry gas seal, which includes a rotor-side sealing component and a stator-side sealing component compressed via a spring element forming a sealing gap, and a cleaning device, via which detergent is conducted in the direction of the spring element for cleaning the same and/or in the direction of the sealing gap for cleaning the same. ## Claims ### Claim 1 A sealing system of a turbomachine configured to seal a rotor of the turbomachine relative to a stator of the turbomachine, having a rotor-side component rotating together with the rotor, with at least one stator-side component that is stationary together with the stator, comprising: at least one dry gas seal, which comprises: a rotor-side sealing component; a stator-side sealing component; a spring element configured to compress the rotor-side sealing component and the stator-side sealing component forming a sealing gap; and a cleaning device configured to conduct detergent in a direction of at least one of: the spring element for cleaning the spring element and the sealing gap for cleaning the sealing gap. ### Claim 2 (depends on 1) The sealing system according to claim 1, further comprising: a sealing gas feeding duct configured to conduct sealing gas in the direction of the sealing gap; and a sealing gas discharge duct configured to conduct the sealing gas away from the sealing gap, wherein the sealing gas feeding duct and the sealing gas discharge duct are provided in the stator and into the at least one stator-side component that is stationary together with the stator. ### Claim 3 (depends on 2) The sealing system according to claim 2, further comprising: a radially outer section of the sealing gas feeding duct arranged in the stator; multiple radially inner sections of the sealing gas feeding duct are arranged in the stator-side component; and a first annular gap connecting the radially outer section and a radially inner section formed between the stator and the stator-side component. ### Claim 4 (depends on 3) The sealing system according to claim 3, further comprising: a radially outer section of the sealing gas discharge duct arranged in the stator; multiple radially inner sections of the sealing gas discharge duct are arranged in the stator-side component; and an annular gap connecting the radially outer section and the multiple radially inner sections formed between the stator and the stator-side component. ### Claim 5 (depends on 4) The sealing system according to claim 4, further comprising: a detergent feeding duct is introduced into the stator-side component that is stationary together with the stator and configured to conduct detergent to the spring element; and a detergent discharge duct is introduced into the stator-side component that is stationary together with the stator and configured to conduct detergent away from the spring element. ### Claim 6 (depends on 5) The sealing system according to claim 5, wherein a radially outer section of the detergent feeding duct and of the detergent discharge duct are introduced into the stator, and a radially inner section of the detergent feeding duct and a radially inner section of the detergent discharge duct are introduced into the stator. ### Claim 7 (depends on 6) The sealing system according to claim 6, wherein detergent is conducted via the detergent feeding duct in the direction of the sealing gap and via the sealing gas discharge duct away from the sealing gap. ### Claim 8 (depends on 7) The sealing system according to claim 7, wherein the sealing gas feeding duct and the sealing gas discharge duct are formed spaced in an axial direction and in a same circumferential position. ### Claim 9 (depends on 8) The sealing system according to claim 8, wherein the detergent feeding duct and the detergent discharge duct are formed spaced in a circumferential direction and in a same axial position. ### Claim 10 (depends on 9) The sealing system according to claim 9, wherein the detergent feeding duct is formed in the axial direction between the sealing gas feeding duct and the sealing gas discharge duct and in the same circumferential position as the sealing gas feeding duct and the sealing gas discharge duct. ### Claim 11 (depends on 5) The sealing system according to claim 5, wherein the detergent is fed to the detergent feeding duct from a detergent dosing system having a defined detergent pressure. ### Claim 12 (depends on 1) The sealing system according to claim 1, further comprising: a heating device configured to heat the detergent utilized for cleaning the dry gas seal. ### Claim 13 A turbomachine for compressing a process gas, comprising: a stator; a rotor, and a sealing system comprising at least one dry gas seal, which comprises: a rotor-side sealing component; a stator-side sealing component; a spring element configured to compress the rotor-side sealing component and the stator-side sealing component forming a sealing gap; and a cleaning device configured to conduct detergent in a direction of at least one of: the spring element for cleaning the spring element and the sealing gap for cleaning the sealing gap. ### Claim 14 A method for cleaning a sealing system of a turbomachine having a stator, a rotor, and a sealing system including at least one dry gas seal, which has a rotor-side sealing component a stator-side sealing component a spring element configured to compress the rotor-side sealing component and the stator-side sealing component forming a sealing gap; and a cleaning device configured to conduct detergent in a direction of at least one of the spring element for cleaning the spring element and the sealing gap for cleaning the sealing gap, comprising: conducting the detergent in the direction of the at least one of the spring element for cleaning the spring element and the sealing gap for cleaning the sealing gap; and conducting the detergent in a direction away from the at least one of the spring element for cleaning the spring element and the sealing gap for cleaning the sealing gap, wherein the dry gas seal is cleaned in a stationary state of the turbomachine. ### Claim 15 (depends on 14) The method according to claim 14, wherein the detergent is heated before being fed in the direction of the sealing gap.