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2. 发明授权

US4232993A Low pressure casing for a steam turbine 失效
标题翻译：蒸汽轮机的低压套管
公开(公告)号：US4232993A
公开(公告)日：1980-11-11
申请号：US911925
申请日：1978-06-02
申请人： Tadasu Ikeda , Takamitsu Taki
发明人： Tadasu Ikeda , Takamitsu Taki
IPC分类号： F01D25/24 , F01D25/26 , F01D3/02 , F01D25/08
CPC分类号： F01D25/26
摘要： A low pressure casing structure of a single shell type which houses, in a low pressure casing, a turbine rotor having turbine blades mounted thereon in a multiplicity of stages, including a heat admitting portion located in an upper central part of the low pressure casing and formed therein with a steam admitting port for admitting turbine driving steam therethrough into the interior of the casing, turbine diaphragms rigidly secured to an inner surface of the casing for supporting stationary blades arranged in a multiplicity of stages axially of the turbine in association with the turbine blades of the turbine rotor, exhausted steam chambers each located at one of opposite ends of the casing axially of the turbine for receiving steam of low temperature and low pressure exhausted thereinto after doing work in the turbine, and a shell of the casing connecting the steam admitting portion to the exhausted steam chambers. The low pressure casing of a single shell type further includes wall means located along an outer surface of the shell in a manner to enclose same and cooperate therewith to define therebetween annular spaces for minimizing temperature differential between the inner and outer surfaces of the low pressure casing.
摘要翻译：一种单壳式的低压套管结构，其在低压套管中容纳涡轮转子，所述涡轮转子具有安装在其上的多个级的涡轮叶片，所述涡轮转子包括位于所述低压壳体的上中心部分的导热部分，在其中形成有用于允许涡轮驱动蒸汽通过其进入壳体内部的蒸汽允许端口，刚性地固定到壳体的内表面的涡轮隔膜，用于支撑沿涡轮机轴向布置在涡轮机的多个级中的固定叶片涡轮转子的叶片，排出的蒸汽室，每个排放的蒸汽室各自位于涡轮机轴向的壳体的相对端中的一端，用于在涡轮机中工作后接收排出的低温和低压的蒸汽;以及壳体，其连接蒸汽允许部分到排出的蒸汽室。单壳型的低压外壳还包括围绕外壳的外表面以围绕其的方式配置的壁装置，并与其配合以在其间限定环形空间，以使低压套管的内表面和外表面之间的温度差最小化。

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