发明名称 |
Nozzle box of axial flow turbine and axial flow turbine |
摘要 |
A nozzle box 10 includes: a lead-in pipe 20; a bent pipe 30 connected to the lead-in pipe 20 and formed so as to change a direction of a channel center line 50 to an axial direction of a turbine rotor 212; and an annular pipe 40 connected to the bent pipe 30 and leading steam to a first-stage nozzle 213a while spreading the steam in a circumferential direction of the turbine rotor 212. In the steam channel lead-in part structure 10, from an inlet of the lead-in pipe 20 toward an outlet of the annular pipe 40, steam channel widths Sa-1 to Sn-1 in a first direction intersecting with the channel center line 50 gradually increases and steam channel widths Sa-2 to Sn-2 in a second direction intersecting with the channel center line 50 and perpendicular to the first direction gradually decreases. |
申请公布号 |
EP2236764(A3) |
申请公布日期 |
2011.12.07 |
申请号 |
EP20100156203 |
申请日期 |
2010.03.11 |
申请人 |
KABUSHIKI KAISHA TOSHIBA |
发明人 |
IWAI, YASUNORI;OOISHI, TSUTOMU;NIIZEKI, YOSHIKI;KAWABATA, TARO |
分类号 |
F01D9/04;F01D9/06;F01D25/26 |
主分类号 |
F01D9/04 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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