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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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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：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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