A cooling arrangement for a gas turbine
A gas turbine comprises an inner casing (3) and a rotor (1) having rotating blades (5) with a shroud (7) and a fin (8), and a cooling arrangement arranged in a cavity (9) in the casing (3) and about the rotating blade (5). According to the invention, the blade shroud (7) comprises a protrusion (12)...
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| creator | Kreiselmaier, Erich Zambetti, Chiara Wilhelm, Thomas |
| description | A gas turbine comprises an inner casing (3) and a rotor (1) having rotating blades (5) with a shroud (7) and a fin (8), and a cooling arrangement arranged in a cavity (9) in the casing (3) and about the rotating blade (5). According to the invention, the blade shroud (7) comprises a protrusion (12) extending away from the blade leading edge (te5) into the cavity (9) and openings (11') in the cavity wall (9a) for a cooling fluid. The protrusion (12) is defined by angles in relation to the flow channel wall (4'). The protrusion (12) effects a vortex flow of cooling fluid entering through the openings (11') and a vortex flow of hot gas entering from the flow channel (4) into the cavity (9). The double-vortex formation reduces a mixing of the cooling flow with the hot gas flow and increases the efficiency of the cooling arrangement of the blade shroud and cavity walls. |
| format | Patent |
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According to the invention, the blade shroud (7) comprises a protrusion (12) extending away from the blade leading edge (te5) into the cavity (9) and openings (11') in the cavity wall (9a) for a cooling fluid. The protrusion (12) is defined by angles in relation to the flow channel wall (4'). The protrusion (12) effects a vortex flow of cooling fluid entering through the openings (11') and a vortex flow of hot gas entering from the flow channel (4) into the cavity (9). The double-vortex formation reduces a mixing of the cooling flow with the hot gas flow and increases the efficiency of the cooling arrangement of the blade shroud and cavity walls.</description><language>eng ; fre ; ger</language><subject>BLASTING ; ENGINE PLANTS IN GENERAL ; HEATING ; INDEXING SCHEME FOR ASPECTS RELATING TONON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES ORJET-PROPULSION PLANTS ; INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUSSUBCLASSES OF CLASSES F01-F04 ; LIGHTING ; MACHINES OR ENGINES IN GENERAL ; MECHANICAL ENGINEERING ; NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAMTURBINES ; STEAM ENGINES ; WEAPONS</subject><creationdate>2011</creationdate><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=20111130&DB=EPODOC&CC=EP&NR=2390466A1$$EHTML$$P50$$Gepo$$Hfree_for_read</linktohtml><link.rule.ids>230,308,776,881,25542,76516</link.rule.ids><linktorsrc>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=20111130&DB=EPODOC&CC=EP&NR=2390466A1$$EView_record_in_European_Patent_Office$$FView_record_in_$$GEuropean_Patent_Office$$Hfree_for_read</linktorsrc></links><search><creatorcontrib>Kreiselmaier, Erich</creatorcontrib><creatorcontrib>Zambetti, Chiara</creatorcontrib><creatorcontrib>Wilhelm, Thomas</creatorcontrib><title>A cooling arrangement for a gas turbine</title><description>A gas turbine comprises an inner casing (3) and a rotor (1) having rotating blades (5) with a shroud (7) and a fin (8), and a cooling arrangement arranged in a cavity (9) in the casing (3) and about the rotating blade (5). According to the invention, the blade shroud (7) comprises a protrusion (12) extending away from the blade leading edge (te5) into the cavity (9) and openings (11') in the cavity wall (9a) for a cooling fluid. The protrusion (12) is defined by angles in relation to the flow channel wall (4'). The protrusion (12) effects a vortex flow of cooling fluid entering through the openings (11') and a vortex flow of hot gas entering from the flow channel (4) into the cavity (9). The double-vortex formation reduces a mixing of the cooling flow with the hot gas flow and increases the efficiency of the cooling arrangement of the blade shroud and cavity walls.</description><subject>BLASTING</subject><subject>ENGINE PLANTS IN GENERAL</subject><subject>HEATING</subject><subject>INDEXING SCHEME FOR ASPECTS RELATING TONON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES ORJET-PROPULSION PLANTS</subject><subject>INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUSSUBCLASSES OF CLASSES F01-F04</subject><subject>LIGHTING</subject><subject>MACHINES OR ENGINES IN GENERAL</subject><subject>MECHANICAL ENGINEERING</subject><subject>NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAMTURBINES</subject><subject>STEAM ENGINES</subject><subject>WEAPONS</subject><fulltext>true</fulltext><rsrctype>patent</rsrctype><creationdate>2011</creationdate><recordtype>patent</recordtype><sourceid>EVB</sourceid><recordid>eNrjZFB3VEjOz8_JzEtXSCwqSsxLT81NzStRSMsvUkhUSE8sVigpLUrKzEvlYWBNS8wpTuWF0twMCm6uIc4euqkF-fGpxQWJyal5qSXxrgFGxpYGJmZmjobGRCgBABzjJw4</recordid><startdate>20111130</startdate><enddate>20111130</enddate><creator>Kreiselmaier, Erich</creator><creator>Zambetti, Chiara</creator><creator>Wilhelm, Thomas</creator><scope>EVB</scope></search><sort><creationdate>20111130</creationdate><title>A cooling arrangement for a gas turbine</title><author>Kreiselmaier, Erich ; Zambetti, Chiara ; Wilhelm, Thomas</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-epo_espacenet_EP2390466A13</frbrgroupid><rsrctype>patents</rsrctype><prefilter>patents</prefilter><language>eng ; fre ; ger</language><creationdate>2011</creationdate><topic>BLASTING</topic><topic>ENGINE PLANTS IN GENERAL</topic><topic>HEATING</topic><topic>INDEXING SCHEME FOR ASPECTS RELATING TONON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES ORJET-PROPULSION PLANTS</topic><topic>INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUSSUBCLASSES OF CLASSES F01-F04</topic><topic>LIGHTING</topic><topic>MACHINES OR ENGINES IN GENERAL</topic><topic>MECHANICAL ENGINEERING</topic><topic>NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAMTURBINES</topic><topic>STEAM ENGINES</topic><topic>WEAPONS</topic><toplevel>online_resources</toplevel><creatorcontrib>Kreiselmaier, Erich</creatorcontrib><creatorcontrib>Zambetti, Chiara</creatorcontrib><creatorcontrib>Wilhelm, Thomas</creatorcontrib><collection>esp@cenet</collection></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext_linktorsrc</fulltext></delivery><addata><au>Kreiselmaier, Erich</au><au>Zambetti, Chiara</au><au>Wilhelm, Thomas</au><format>patent</format><genre>patent</genre><ristype>GEN</ristype><title>A cooling arrangement for a gas turbine</title><date>2011-11-30</date><risdate>2011</risdate><abstract>A gas turbine comprises an inner casing (3) and a rotor (1) having rotating blades (5) with a shroud (7) and a fin (8), and a cooling arrangement arranged in a cavity (9) in the casing (3) and about the rotating blade (5). According to the invention, the blade shroud (7) comprises a protrusion (12) extending away from the blade leading edge (te5) into the cavity (9) and openings (11') in the cavity wall (9a) for a cooling fluid. The protrusion (12) is defined by angles in relation to the flow channel wall (4'). The protrusion (12) effects a vortex flow of cooling fluid entering through the openings (11') and a vortex flow of hot gas entering from the flow channel (4) into the cavity (9). The double-vortex formation reduces a mixing of the cooling flow with the hot gas flow and increases the efficiency of the cooling arrangement of the blade shroud and cavity walls.</abstract><oa>free_for_read</oa></addata></record> |
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| language | eng ; fre ; ger |
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| subjects | BLASTING ENGINE PLANTS IN GENERAL HEATING INDEXING SCHEME FOR ASPECTS RELATING TONON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES ORJET-PROPULSION PLANTS INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUSSUBCLASSES OF CLASSES F01-F04 LIGHTING MACHINES OR ENGINES IN GENERAL MECHANICAL ENGINEERING NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAMTURBINES STEAM ENGINES WEAPONS |
| title | A cooling arrangement for a gas turbine |
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