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1. 发明申请

US20140060054A1 THERMODYNAMIC CYCLE OPTIMIZATION FOR A STEAM TURBINE CYCLE 有权
标题翻译：蒸汽涡轮循环的热力学循环优化
公开(公告)号：US20140060054A1
公开(公告)日：2014-03-06
申请号：US13599833
申请日：2012-08-30
申请人： Sanyaswara Rao GANTI , Rajasekar Natarajan , Rakesh Alamsetty
发明人： Sanyaswara Rao GANTI , Rajasekar Natarajan , Rakesh Alamsetty
IPC分类号： F01K13/00 , F01K23/02
CPC分类号： F01K27/02
摘要： Heat flow from a steam seal header could be used in a stage, such as a low pressure stage, of a steam turbine. However, the dump steam temperature from the steam seal header can be too high requiring removal of excess heat, typically through attemperation, before the dump steam is provided to the low pressure stage. Attemperation poses reliability and life issues and lowers efficiency. To address such short comings, one or more heat pumps are used to transfer heat from the dump steam to the fluid entering a boiler. This allows the dump steam temperature to be within acceptable limits, and at the same time, increase the temperature of the fluid so that the steam cycle performance is enhanced. Preferably, solid-state heat pumps are used as they are reliable, silent and can be precisely controlled.
摘要翻译：来自蒸汽密封头的热流可以用于蒸汽轮机的一个阶段，如低压阶段。然而，蒸汽密封头部的倾倒蒸汽温度可能太高，需要通常通过调温来除去多余的热量，然后将排放蒸汽提供到低压级。降温可能性和生命问题降低了效率。为了解决这些缺点，使用一个或多个热泵将热量从转储蒸汽传递到进入锅炉的流体。这允许倾倒蒸汽温度在可接受的限度内，并且同时增加流体的温度，从而提高蒸汽循环性能。优选地，使用固态热泵，因为它们是可靠的，无声的并且可以被精确地控制。

2. 发明申请

US20110214426A1 TURBINE SYSTEM INCLUDING VALVE FOR LEAK OFF LINE FOR CONTROLLING SEAL STEAM FLOW 有权
标题翻译：包括用于泄漏线的阀门的涡轮机系统用于控制密封蒸汽流
公开(公告)号：US20110214426A1
公开(公告)日：2011-09-08
申请号：US12715681
申请日：2010-03-02
申请人： Mahendra Singh Mehra , Nestor Hernandez Sanchez , Jegadeesan Maruthamuthu , Rajasekar Natarajan , Manikandan Srinivasan
发明人： Mahendra Singh Mehra , Nestor Hernandez Sanchez , Jegadeesan Maruthamuthu , Rajasekar Natarajan , Manikandan Srinivasan
IPC分类号： F01K13/00 , F01K9/00
CPC分类号： F01D11/06 , F01K7/24 , F05D2220/31 , F05D2260/2322
摘要： A turbine system includes a valve coupled to a leak off line from a leak packing of a first turbine, the valve controlling a first steam flow used to maintain a constant self-sustaining sealing pressure to a second turbine across numerous loading conditions. A related method is also provided.
摘要翻译：涡轮机系统包括从第一涡轮机的泄漏填料与泄漏线相连的阀，所述阀控制用于在多个负载条件下维持恒定的自持密封压力至第二涡轮机的第一蒸汽流。还提供了相关的方法。

3. 发明授权

US08317464B2 Reverse flow tolerant spring activated brush seal 有权
标题翻译：反向流动弹簧启动刷子密封
公开(公告)号：US08317464B2
公开(公告)日：2012-11-27
申请号：US12706102
申请日：2010-02-16
申请人： Rakesh V. Alamsetty , William E. Adis , Mahendra S. Mehra , Nestor Hernandez Sanchez , Rajasekar Natarajan , Akshay A. Datye
发明人： Rakesh V. Alamsetty , William E. Adis , Mahendra S. Mehra , Nestor Hernandez Sanchez , Rajasekar Natarajan , Akshay A. Datye
IPC分类号： F04D29/10
CPC分类号： F16J15/3288
摘要： A reverse flow tolerant brush seal arrangement for restricting the transfer of a pressurized fluid between a first and a second chamber along a moving shaft. Opposing backing plates are provided to stiffen brush bristle alignment on the moving shaft. Differential pressure between the chambers is aided by spring biasing to seat axial movement of a sliding brush seal against one of the opposing backing plates for stiffening to maintain a design clearance with a shaft being sealed.
摘要翻译：用于限制沿着移动轴在第一和第二室之间传递加压流体的反向流动容许刷密封装置。提供相反的背板以加强移动轴上的刷毛对准。通过弹簧偏置来帮助腔之间的差压，以将滑动刷密封件的轴向运动抵靠在相对的背板中的一个上，用于加强以保持与被密封的轴的设计间隙。

4. 发明申请

US20110200432A1 REVERSE FLOW TOLERANT SPRING ACTIVATED BRUSH SEAL 有权
标题翻译：反向流动耐力弹簧激活的刷子密封
公开(公告)号：US20110200432A1
公开(公告)日：2011-08-18
申请号：US12706102
申请日：2010-02-16
申请人： Rakesh V. Alamsetty , William E. Adis , Mahendra S. Mehra , Nestor Hernandez Sanchez , Rajasekar Natarajan , Akshay A. Datye
发明人： Rakesh V. Alamsetty , William E. Adis , Mahendra S. Mehra , Nestor Hernandez Sanchez , Rajasekar Natarajan , Akshay A. Datye
IPC分类号： F01D11/00 , F16J15/44
CPC分类号： F16J15/3288
摘要： A reverse flow tolerant brush seal arrangement for restricting the transfer of a pressurized fluid between a first and a second chamber along a moving shaft. Opposing backing plates are provided to stiffen brush bristle alignment on the moving shaft. Differential pressure between the chambers is aided by spring biasing to seat axial movement of a sliding brush seal against one of the opposing backing plates for stiffening to maintain a design clearance with a shaft being sealed.
摘要翻译：用于限制沿着移动轴在第一和第二室之间传递加压流体的反向流动容许刷密封装置。提供相反的背板以加强移动轴上的刷毛对准。通过弹簧偏置来帮助腔之间的差压，以将滑动刷密封件的轴向运动抵靠在相对的背板中的一个上，用于加强以保持与被密封的轴的设计间隙。

5. 发明授权

US09003799B2 Thermodynamic cycle optimization for a steam turbine cycle 有权
标题翻译：蒸汽轮机循环的热力循环优化
公开(公告)号：US09003799B2
公开(公告)日：2015-04-14
申请号：US13599833
申请日：2012-08-30
申请人： Sanyaswara Rao Ganti , Rajasekar Natarajan , Rakesh Alamsetty
发明人： Sanyaswara Rao Ganti , Rajasekar Natarajan , Rakesh Alamsetty
IPC分类号： F01K23/02 , F01K13/00 , F01K27/02
CPC分类号： F01K27/02
摘要： Heat flow from a steam seal header could be used in a stage, such as a low pressure stage, of a steam turbine. However, the dump steam temperature from the steam seal header can be too high requiring removal of excess heat, typically through attemperation, before the dump steam is provided to the low pressure stage. Attemperation poses reliability and life issues and lowers efficiency. To address such short comings, one or more heat pumps are used to transfer heat from the dump steam to the fluid entering a boiler. This allows the dump steam temperature to be within acceptable limits, and at the same time, increase the temperature of the fluid so that the steam cycle performance is enhanced. Preferably, solid-state heat pumps are used as they are reliable, silent and can be precisely controlled.
摘要翻译：来自蒸汽密封头的热流可以用于蒸汽轮机的一个阶段，如低压阶段。然而，蒸汽密封头部的倾倒蒸汽温度可能太高，需要通常通过调温来除去多余的热量，然后将排放蒸汽提供到低压级。降温可能性和生命问题降低了效率。为了解决这些缺点，使用一个或多个热泵将热量从转储蒸汽传递到进入锅炉的流体。这允许倾倒蒸汽温度在可接受的限度内，并且同时增加流体的温度，从而提高蒸汽循环性能。优选地，使用固态热泵，因为它们是可靠的，无声的并且可以被精确地控制。

6. 发明授权

US08650878B2 Turbine system including valve for leak off line for controlling seal steam flow 有权
标题翻译：涡轮系统包括用于泄漏线的阀门，用于控制密封蒸汽流量
公开(公告)号：US08650878B2
公开(公告)日：2014-02-18
申请号：US12715681
申请日：2010-03-02
申请人： Mahendra Singh Mehra , Nestor Hernandez Sanchez , Jegadeesan Maruthamuthu , Rajasekar Natarajan , Manikandan Srinivasan
发明人： Mahendra Singh Mehra , Nestor Hernandez Sanchez , Jegadeesan Maruthamuthu , Rajasekar Natarajan , Manikandan Srinivasan
IPC分类号： F01K13/02 , F01K7/22
CPC分类号： F01D11/06 , F01K7/24 , F05D2220/31 , F05D2260/2322
摘要： A turbine system includes a valve coupled to a leak off line from a leak packing of a first turbine, the valve controlling a first steam flow used to maintain a constant self-sustaining sealing pressure to a second turbine across numerous loading conditions. A related method is also provided.
摘要翻译：涡轮机系统包括从第一涡轮机的泄漏填料与泄漏线相连的阀，所述阀控制用于在多个负载条件下维持恒定的自持密封压力至第二涡轮机的第一蒸汽流。还提供了相关的方法。

7. 发明申请

US20120027582A1 FLOATING PACKING RING ASSEMBLY 审中-公开
标题翻译：浮动包装环组件
公开(公告)号：US20120027582A1
公开(公告)日：2012-02-02
申请号：US12848333
申请日：2010-08-02
申请人： Rajasekar Natarajan , Rakesh Vamsi Alamsetty , Mahendra Singh Mehra , Nestor Hernandez Sanchez , Manikandan Srinivasan
发明人： Rajasekar Natarajan , Rakesh Vamsi Alamsetty , Mahendra Singh Mehra , Nestor Hernandez Sanchez , Manikandan Srinivasan
IPC分类号： F04D29/04 , F01D11/08 , F04D29/08 , F16J15/44 , F16J15/46 , F16J15/447 , F16J15/16 , F01D11/02 , F01D11/00
CPC分类号： F16J15/445 , F01D11/025 , F16J15/4472 , F16J15/46
摘要： A packing ring assembly for use between a rotating and a stationary component in a turbomachine is disclosed, the assembly including an arcuate packing ring casing, an arcuate packing ring segment positioned at least partially within the packing ring casing, and a resistance component configured to allow movement of the packing ring segment in an axial direction, relative to the rotating component, between a first and second position in response to a pressure condition. In one embodiment, the resistance component allows movement when the pressure condition comprises approximately 30% of the turbomachine load. Also disclosed is an altered surface topography of the rotating component to accommodate variable length teeth extending from the packing ring segment, such that when the packing ring segment is in the first position, a clearance between the packing ring segment and the rotating component is larger than when the packing ring segment is in the second position.
摘要翻译：公开了一种在涡轮机中的旋转和静止部件之间使用的密封环组件，该组件包括弧形密封环外壳，至少部分地定位在密封环外壳内的弓形填料环段，以及构造成允许响应于压力状态，填料环段相对于旋转部件在轴向方向上在第一和第二位置之间运动。在一个实施例中，当压力条件包括大约30％的涡轮机负载时，电阻部件允许移动。还公开了旋转部件的改变的表面形貌以适应从填料环段延伸的可变长度的齿，使得当填料环段处于第一位置时，填料环段和旋转部件之间的间隙大于当包装环段处于第二位置时。

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