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公开(公告)号：US5913812A
公开(公告)日：1999-06-22
申请号：US843852
申请日：1997-04-17
摘要： A turbine air sealing and condenser air removal system for use in steam plant equipment is arranged to increase steam plant efficiency, reduce oxygen concentration in condensate being returned to the steam generators, and simplify system arrangement and maintenance. This system incorporates dry running shaft seals at the high and low pressure turbine shaft glands. The turbine shaft glands are exhausted to a vacuum header which is exhausted by vacuum pumps. Air from the condenser is also exhausted to the common vacuum header. Non-rotating air seals on the turbine such as valve stem seals, which must only accommodate linear movement, can incorporate metallic bellows or conventional packings to prevent air leakage into the steam path or steam leakage out into the surrounding environment. The bellows seals may also incorporate stem glands which are exhausted to the turbine exhaust trunk to minimize the internal pressure of the bellows and prevent catastrophic failure which might occur if the bellows were to be pressurized with high pressure steam.
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公开(公告)号：US07518722B2
公开(公告)日：2009-04-14
申请号：US11208443
申请日：2005-08-19
申请人： Jason P. Julian , Kevin M. Didona , Darrin P. Milner , Thomas L. Mikes , Scott D. Milligan , David P. Bannon
发明人： Jason P. Julian , Kevin M. Didona , Darrin P. Milner , Thomas L. Mikes , Scott D. Milligan , David P. Bannon
CPC分类号： G01J3/02 , G01J3/0202 , G01J3/0205 , G01J3/0208 , G01J3/021 , G01J3/0218 , G01J3/0237 , G01J3/0291 , G01J3/0294 , G01J3/0297 , G01J3/04 , G01J3/18 , G01J3/2823
摘要： A multi-spectrum, multi-channel imaging spectrometer includes two or more input slits or other light input devices, one for each of two or more input channels. The input slits are vertically and horizontally displaced, with respect to each other. The vertical displacements cause spectra from the two channels to be vertically displaced, with respect to each other, on a single image sensor on a stationary image plane. The horizontal displacements cause incident light beams from the respective input channels to strike a convex grating at different respective incidence angles and produce separate spectra having different respective spectral ranges. A retroflective spectrometer includes a convex grating that, by diffraction, disperses wavelengths of light at different angles and orders approximately back along an incident light beam. A single concave mirror reflects both the input channel and the dispersed spectrum. A prism, set of mirrors, beam splitters or other optical element(s) folds the input channel(s) of a spectrometer to enable the input(s) to be moved away from the plane of the image sensor, thereby enabling a large camera or other device to be attached to the spectrometer without blocking the input(s). A mounting mechanism enables a curved optical element to be adjusted through lateral and transverse translations, without requiring a gimbal mount.
摘要翻译： 多光谱多通道成像光谱仪包括两个或更多个输入狭缝或其他光输入装置，一个用于两个或更多个输入通道中的每一个。 输入狭缝相对于彼此垂直和水平位移。 垂直位移导致来自两个通道的光谱相对于彼此在固定图像平面上的单个图像传感器上垂直移位。 水平位移引起来自相应输入通道的入射光束以不同的入射角撞击凸光栅，并产生具有不同相应光谱范围的分离光谱。 反射光谱仪包括一个凸形光栅，通过衍射，分散光线在不同角度的波长，并沿着入射光束大致向后推。 单个凹面镜反映了输入通道和分散光谱。 棱镜，一组镜子，分束器或其他光学元件折叠光谱仪的输入通道，以使得输入能够远离图像传感器的平面移动，从而实现大型相机 或其他装置连接到光谱仪而不阻塞输入。 安装机构使弯曲光学元件可以通过横向和横向平移进行调节，而不需要万向架安装。
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公开(公告)号：US5749227A
公开(公告)日：1998-05-12
申请号：US488299
申请日：1995-06-07
摘要： A turbine air sealing and condenser air removal system for use in steam plant equipment is arranged to increase steam plant efficiency, reduce oxygen concentration in condensate being returned to the steam generators, and simplify system arrangement and maintenance. This system incorporates dry running shaft seals at the high and low pressure turbine shaft glands. The turbine shaft glands are exhausted to a vacuum header which is exhausted by vacuum pumps. Air from the condenser is also exhausted to the common vacuum header. Non-rotating air seals on the turbine such as valve stem seals, which must only accommodate linear movement, can incorporate metallic bellows or conventional packings to prevent air leakage into the steam path or steam leakage out into the surrounding environment. The bellows seals may also incorporate stem glands which are exhausted to the turbine exhaust trunk to minimize the internal pressure of the bellows and prevent catastrophic failure which might occur if the bellows were to be pressurized with high pressure steam.
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公开(公告)号：US5941506A
公开(公告)日：1999-08-24
申请号：US843864
申请日：1997-04-17
摘要： A turbine air sealing and condenser air removal system for use in steam plant equipment is arranged to increase steam plant efficiency, reduce oxygen concentration in condensate being returned to the steam generators, and simplify system arrangement and maintenance. This system incorporates dry running shaft seals at the high and low pressure turbine shaft glands. The turbine shaft glands are exhausted to a vacuum header which is exhausted by vacuum pumps. Air from the condenser is also exhausted to the common vacuum header. Non-rotating air seals on the turbine such as valve stem seals, which must only accommodate linear movement, can incorporate metallic bellows or conventional packings to prevent air leakage into the steam path or steam leakage out into the surrounding environment. The bellows seals may also incorporate stem glands which are exhausted to the turbine exhaust trunk to minimize the internal pressure of the bellows and prevent catastrophic failure which might occur if the bellows were to be pressurized with high pressure steam.
摘要翻译： 设置用于蒸汽设备设备的涡轮空气密封和冷凝器空气去除系统，以提高蒸汽设备的效率，减少返回到蒸汽发生器的冷凝水中的氧气浓度，并简化系统布置和维护。 该系统在高压和低压涡轮机轴压盖处包含干运行轴密封。 涡轮轴密封件被排空到由真空泵排出的真空集管。 来自冷凝器的空气也被耗尽到公共真空集管。 涡轮机上的不旋转的空气密封件（例如只能容纳线性运动的阀杆密封件）可以并入金属波纹管或常规密封件，以防止空气泄漏到蒸汽路径或蒸汽泄漏到周围环境中。 波纹管密封件还可以包括杆密封件，其被排放到涡轮机排气管，以最小化波纹管的内部压力并防止如果波纹管被高压蒸汽加压可能发生的灾难性故障。
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