Blade root and wheel groove structure of turbine moving blade
A blade root and wheel groove structure of a turbine moving blade is disclosed. A blade root of the blade is assembled in a wheel groove of an impeller, and the contours of the blade root and the wheel groove are fir-shaped. The fir-shaped blade root has four teeth, and the contour of the transition...
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| creator | NI CHANGHUI ZHOU XIANDING YIN MINGYAN FAN XIAOPING GOU XIAOPING FAN ZHIFEI ZHONG GANGYUN WANG SHUNDE CHEN TIENING PU SHOUWU |
| description | A blade root and wheel groove structure of a turbine moving blade is disclosed. A blade root of the blade is assembled in a wheel groove of an impeller, and the contours of the blade root and the wheel groove are fir-shaped. The fir-shaped blade root has four teeth, and the contour of the transition position between the first tooth of the blade root and a blade root platform is formed by smoothly connecting through a linear section and two arc sections in different radius, wherein the connection points are tangential points. A linear line is a portion of bottom projection line of the blade root platform and is arranged in the upper side. The arc section with a large radius is arranged in the middle, and the arc section with a small radius is arranged in the lower side, wherein the large radius RN1 is 1.75 times of the small radius RN2. The fillet contour of a fourth tooth is formed by connecting of three arc sections with different radiuses in tangential manner. From top to bottom, the radius RM1 of a first arc section is 1.13 times of the RN2, the radius RM2 of a second arc section is 2.63 times of the RN2, and the radius RM3 of a third arc section is 1.44 times of the RN2. The blade root bearing capacity reaches over 1000 tons. The blade root and wheel groove structure is suitable for final-stage moving blades of super-large power turbines. |
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A blade root of the blade is assembled in a wheel groove of an impeller, and the contours of the blade root and the wheel groove are fir-shaped. The fir-shaped blade root has four teeth, and the contour of the transition position between the first tooth of the blade root and a blade root platform is formed by smoothly connecting through a linear section and two arc sections in different radius, wherein the connection points are tangential points. A linear line is a portion of bottom projection line of the blade root platform and is arranged in the upper side. The arc section with a large radius is arranged in the middle, and the arc section with a small radius is arranged in the lower side, wherein the large radius RN1 is 1.75 times of the small radius RN2. The fillet contour of a fourth tooth is formed by connecting of three arc sections with different radiuses in tangential manner. From top to bottom, the radius RM1 of a first arc section is 1.13 times of the RN2, the radius RM2 of a second arc section is 2.63 times of the RN2, and the radius RM3 of a third arc section is 1.44 times of the RN2. The blade root bearing capacity reaches over 1000 tons. The blade root and wheel groove structure is suitable for final-stage moving blades of super-large power turbines.</description><language>eng</language><subject>BLASTING ; ENGINE PLANTS IN GENERAL ; HEATING ; LIGHTING ; MACHINES OR ENGINES IN GENERAL ; MECHANICAL ENGINEERING ; NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAMTURBINES ; STEAM ENGINES ; WEAPONS</subject><creationdate>2015</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=20150812&DB=EPODOC&CC=CN&NR=104832220A$$EHTML$$P50$$Gepo$$Hfree_for_read</linktohtml><link.rule.ids>230,308,780,885,25564,76547</link.rule.ids><linktorsrc>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=20150812&DB=EPODOC&CC=CN&NR=104832220A$$EView_record_in_European_Patent_Office$$FView_record_in_$$GEuropean_Patent_Office$$Hfree_for_read</linktorsrc></links><search><creatorcontrib>NI CHANGHUI</creatorcontrib><creatorcontrib>ZHOU XIANDING</creatorcontrib><creatorcontrib>YIN MINGYAN</creatorcontrib><creatorcontrib>FAN XIAOPING</creatorcontrib><creatorcontrib>GOU XIAOPING</creatorcontrib><creatorcontrib>FAN ZHIFEI</creatorcontrib><creatorcontrib>ZHONG GANGYUN</creatorcontrib><creatorcontrib>WANG SHUNDE</creatorcontrib><creatorcontrib>CHEN TIENING</creatorcontrib><creatorcontrib>PU SHOUWU</creatorcontrib><title>Blade root and wheel groove structure of turbine moving blade</title><description>A blade root and wheel groove structure of a turbine moving blade is disclosed. A blade root of the blade is assembled in a wheel groove of an impeller, and the contours of the blade root and the wheel groove are fir-shaped. The fir-shaped blade root has four teeth, and the contour of the transition position between the first tooth of the blade root and a blade root platform is formed by smoothly connecting through a linear section and two arc sections in different radius, wherein the connection points are tangential points. A linear line is a portion of bottom projection line of the blade root platform and is arranged in the upper side. The arc section with a large radius is arranged in the middle, and the arc section with a small radius is arranged in the lower side, wherein the large radius RN1 is 1.75 times of the small radius RN2. The fillet contour of a fourth tooth is formed by connecting of three arc sections with different radiuses in tangential manner. From top to bottom, the radius RM1 of a first arc section is 1.13 times of the RN2, the radius RM2 of a second arc section is 2.63 times of the RN2, and the radius RM3 of a third arc section is 1.44 times of the RN2. The blade root bearing capacity reaches over 1000 tons. The blade root and wheel groove structure is suitable for final-stage moving blades of super-large power turbines.</description><subject>BLASTING</subject><subject>ENGINE PLANTS IN GENERAL</subject><subject>HEATING</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>2015</creationdate><recordtype>patent</recordtype><sourceid>EVB</sourceid><recordid>eNrjZLB1yklMSVUoys8vUUjMS1Eoz0hNzVFIB_LLUhWKS4pKk0tKi1IV8tMUgHRSZl6qQm5-WWZeukISSB8PA2taYk5xKi-U5mZQdHMNcfbQTS3Ij08tLkhMTs1LLYl39jM0MLEwNjIyMnA0JkYNAAR2L-0</recordid><startdate>20150812</startdate><enddate>20150812</enddate><creator>NI CHANGHUI</creator><creator>ZHOU XIANDING</creator><creator>YIN MINGYAN</creator><creator>FAN XIAOPING</creator><creator>GOU XIAOPING</creator><creator>FAN ZHIFEI</creator><creator>ZHONG GANGYUN</creator><creator>WANG SHUNDE</creator><creator>CHEN TIENING</creator><creator>PU SHOUWU</creator><scope>EVB</scope></search><sort><creationdate>20150812</creationdate><title>Blade root and wheel groove structure of turbine moving blade</title><author>NI CHANGHUI ; ZHOU XIANDING ; YIN MINGYAN ; FAN XIAOPING ; GOU XIAOPING ; FAN ZHIFEI ; ZHONG GANGYUN ; WANG SHUNDE ; CHEN TIENING ; PU SHOUWU</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-epo_espacenet_CN104832220A3</frbrgroupid><rsrctype>patents</rsrctype><prefilter>patents</prefilter><language>eng</language><creationdate>2015</creationdate><topic>BLASTING</topic><topic>ENGINE PLANTS IN GENERAL</topic><topic>HEATING</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>NI CHANGHUI</creatorcontrib><creatorcontrib>ZHOU XIANDING</creatorcontrib><creatorcontrib>YIN MINGYAN</creatorcontrib><creatorcontrib>FAN XIAOPING</creatorcontrib><creatorcontrib>GOU XIAOPING</creatorcontrib><creatorcontrib>FAN ZHIFEI</creatorcontrib><creatorcontrib>ZHONG GANGYUN</creatorcontrib><creatorcontrib>WANG SHUNDE</creatorcontrib><creatorcontrib>CHEN TIENING</creatorcontrib><creatorcontrib>PU SHOUWU</creatorcontrib><collection>esp@cenet</collection></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext_linktorsrc</fulltext></delivery><addata><au>NI CHANGHUI</au><au>ZHOU XIANDING</au><au>YIN MINGYAN</au><au>FAN XIAOPING</au><au>GOU XIAOPING</au><au>FAN ZHIFEI</au><au>ZHONG GANGYUN</au><au>WANG SHUNDE</au><au>CHEN TIENING</au><au>PU SHOUWU</au><format>patent</format><genre>patent</genre><ristype>GEN</ristype><title>Blade root and wheel groove structure of turbine moving blade</title><date>2015-08-12</date><risdate>2015</risdate><abstract>A blade root and wheel groove structure of a turbine moving blade is disclosed. A blade root of the blade is assembled in a wheel groove of an impeller, and the contours of the blade root and the wheel groove are fir-shaped. The fir-shaped blade root has four teeth, and the contour of the transition position between the first tooth of the blade root and a blade root platform is formed by smoothly connecting through a linear section and two arc sections in different radius, wherein the connection points are tangential points. A linear line is a portion of bottom projection line of the blade root platform and is arranged in the upper side. The arc section with a large radius is arranged in the middle, and the arc section with a small radius is arranged in the lower side, wherein the large radius RN1 is 1.75 times of the small radius RN2. The fillet contour of a fourth tooth is formed by connecting of three arc sections with different radiuses in tangential manner. From top to bottom, the radius RM1 of a first arc section is 1.13 times of the RN2, the radius RM2 of a second arc section is 2.63 times of the RN2, and the radius RM3 of a third arc section is 1.44 times of the RN2. The blade root bearing capacity reaches over 1000 tons. The blade root and wheel groove structure is suitable for final-stage moving blades of super-large power turbines.</abstract><oa>free_for_read</oa></addata></record> |
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| subjects | BLASTING ENGINE PLANTS IN GENERAL HEATING LIGHTING MACHINES OR ENGINES IN GENERAL MECHANICAL ENGINEERING NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAMTURBINES STEAM ENGINES WEAPONS |
| title | Blade root and wheel groove structure of turbine moving blade |
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