公开(公告)号：US09719379B2

公开(公告)日：2017-08-01

申请号：US14749399

申请日：2015-06-24

申请人： Massachusetts Institute of Technology

发明人： Hussam Zebian ,  Alexander Mitsos

IPC分类号： F01K7/38 ,  G06F17/50 ,  F01K7/22 ,  F22D1/32 ,  F01K7/40 ,  F01K13/02 ,  F01K17/06 ,  F01K19/00 ,  G06F17/10 ,  F01K25/08 ,  F01K7/24

CPC分类号： F01K7/38 ,  F01K7/22 ,  F01K7/24 ,  F01K7/40 ,  F01K13/02 ,  F01K17/06 ,  F01K19/00 ,  F01K25/08 ,  F05D2200/34 ,  F05D2220/31 ,  F05D2260/221 ,  F05D2260/606 ,  F05D2270/20 ,  F05D2270/301 ,  F05D2270/303 ,  F05D2270/3061 ,  F05D2270/66 ,  F22D1/32 ,  F22D1/325 ,  G06F17/10 ,  G06F17/50 ,  Y02E20/18

摘要： Systems and methods axe disclosed herein that generally involve a double pinch criterion for optimization of regenerative Rankine cycles. In some embodiments, operating variables such as bleed extraction pressure and bleed flow rate are selected such that a double pinch is obtained in a feedwater heater, thereby improving the efficiency of the Rankine cycle. In particular, a first pinch point is obtained at the onset of condensation of the bleed and a second pinch point is obtained at the exit of the bleed from the feedwater heater. The minimal approach temperature at the first pinch point can be approximately equal to the minimal approach temperature at the second pinch point. Systems that employ regenerative Rankine cycles, methods of operating such systems, and methods of optimizing the operation of such systems are disclosed herein in connection with the double pinch criterion.

公开(公告)号：US20120324893A1

公开(公告)日：2012-12-27

申请号：US13578642

申请日：2011-02-07

申请人： Yoshiharu Hayashi

发明人： Yoshiharu Hayashi

IPC分类号： F01K11/02 ,  F01K9/00 ,  F01K7/34

CPC分类号： F01K7/40 ,  F01K7/34 ,  F01K13/02 ,  F22D1/003 ,  F22D1/02 ,  F22D1/12 ,  F22D1/32 ,  F22D1/325 ,  F22D1/40 ,  F23J15/06 ,  Y02E20/363

摘要： A coal-fired power plant having a control unit including a first flow rate control valve for regulating a water flow rate of a water feed bypass system, a second flow rate control valve installed in an extraction pipe for extracting steam from a steam turbine, a first temperature sensor on a downstream side of a heat recovery device, and a second temperature sensor on a downstream side of a heat exchanger and the control unit regulates opening of the first and second flow rate control valves on the basis of an exhaust gas temperature detected by the first temperature sensor and a feed water temperature detected by the second temperature sensor.Accordingly, even when a recovery heat quantity of the heat recovery device installed on a gas duct is changed due to deterioration with age of a boiler, a reduction in plant reliability and plant efficiency can be suppressed.

摘要翻译： 一种燃煤发电厂，具有控制单元，该控制单元包括用于调节给水旁路系统的水流量的第一流量控制阀，安装在从蒸汽轮机抽取蒸汽的抽取管中的第二流量控制阀， 在热回收装置的下游侧的第一温度传感器和热交换器的下游侧的第二温度传感器，并且控制单元基于检测到的废气温度来调节第一和第二流量控制阀的打开 由第一温度传感器和由第二温度传感器检测的给水温度。 因此，即使当由于锅炉的老化而劣化而改变安装在气体导管上的热回收装置的回收热量时，也可以抑制工厂可靠性和设备效率的降低。

公开(公告)号：US1369759A

公开(公告)日：1921-02-22

申请号：US30795619

申请日：1919-07-01

申请人： HILL JOSEPH S

发明人： HILL JOSEPH S

IPC分类号： F22D1/32

CPC分类号： F22D1/325

公开(公告)号：US20130188939A1

公开(公告)日：2013-07-25

申请号：US13744477

申请日：2013-01-18

申请人： Alstom Technology Ltd

发明人： Vincent Jourdain ,  Jerome Colin

IPC分类号： F24H1/00

CPC分类号： F24H1/0018 ,  F01K7/16 ,  F01K7/40 ,  F22B1/023 ,  F22D1/325

摘要： A heating system for a thermal electric power station water circuit includes an extraction system for extracting water from a condenser and a first set of heaters including a first water inlet fed with a first fraction of a flow coming from the extraction system, and a input for heating the extracted water. A second set of heaters includes a heater arranged in series with the extracted-water inlet of the first set, and a steam input for heating the extracted water. A condensate cooler includes a first water inlet fed by a condensate outlet of the second set of heaters, a second water inlet fed with a complementary fraction of the extracted-water flow, a first outlet for cooled condensate to be reinjected into the condenser, and a second outlet for heated water so that water leaving the first set of heaters is mixable with water from the second outlet.

摘要翻译： 一种用于热电站水回路的加热系统包括：用于从冷凝器中提取水的提取系统和第一组加热器，所述第一组加热器包括供给来自所述提取系统的流的第一部分的第一进水口，以及用于 加热提取的水。 第二组加热器包括与第一组的提取水入口串联布置的加热器和用于加热抽出的水的蒸汽输入。 冷凝器冷却器包括由第二组加热器的冷凝物出口供给的第一水入口，供给有提取水流的互补部分的第二进水口，用于冷却冷凝物的第一出口，以再注入冷凝器;以及 用于加热水的第二出口，使得离开第一组加热器的水可与来自第二出口的水混合。

公开(公告)号：US20090223224A1

公开(公告)日：2009-09-10

申请号：US12074701

申请日：2008-03-05

申请人： Bin Xu

发明人： Bin Xu

IPC分类号： F01K7/22

CPC分类号： F01K13/02 ,  F01K7/22 ,  F01K7/24 ,  F01K7/40 ,  F22D1/325

摘要： A thermal power generation apparatus comprises a boiler (15) and multiple turbine sets for high, intermediate and lower steam pressure operation. Steam exhausted from the high pressure turbine (HP), and reduced in both pressure and temperature, is returned to a reheater (19) for reheating. The reheated steam is then passed to a intermediate pressure turbine (IP). It is desirable to control the temperature of steam entering the intermediate pressure turbine (IP). The invention provides a system for effecting temperature control of the reheater stream in a thermal power plant. The system includes a reheater conduit (10, 21) adapted to define at least a part of a reheat flow path for steam between an exhaust of a high pressure turbine system (HP) and an inlet of a reheater system (19). The system further includes an indirect water/steam heat exchanger (B) having a heat exchange portion within the reheat flow path and defining a water flow path means adapted to receive and circulate feed water. The feed water may be taken from take off points (A, D) in the primary feed water stream.

摘要翻译： 火力发电装置包括锅炉（15）和用于高，中和低蒸汽压力操作的多个涡轮机组。 从高压涡轮机（HP）排出并在压力和温度下降低的蒸汽返回到再热器（19）以进行再加热。 然后将再加热的蒸汽传递到中压涡轮机（IP）。 期望控制进入中压涡轮机（IP）的蒸汽的温度。 本发明提供了一种用于实现热电厂中再热器流的温度控制的系统。 该系统包括再热器管道（10,21），其适于在高压涡轮机系统（HP）的排气口和再加热器系统（19）的入口之间限定用于蒸汽的再热流动路径的至少一部分。 该系统还包括在再热流动路径内具有热交换部分的间接水/蒸汽热交换器（B），并且限定适于接收和循环给水的水流通道装置。 进料水可以从初级进料水流中的脱卸点（A，D）获取。

公开(公告)号：US07032384B2

公开(公告)日：2006-04-25

申请号：US10796014

申请日：2004-03-10

申请人： Kenji Kumagai ,  Yukihiko Sawa ,  Koichi Watanabe

发明人： Kenji Kumagai ,  Yukihiko Sawa ,  Koichi Watanabe

IPC分类号： F01K1/00 ,  F01K7/34 ,  F01K9/02 ,  F01K25/08 ,  F22D1/32 ,  F22D5/18 ,  G21D5/02

CPC分类号： F01K7/42 ,  F01K9/00 ,  F22D1/325

摘要： Steam turbine plant includes a steam generator, a plurality of low pressure turbines being driven by steam from the steam generator, a plurality of steam condensers to condense the steam from the low pressure turbines into condensed water and a feedwater line which supplies the condensed water to the steam generator as feedwater. The feedwater line including a plurality of feedwater heating lines connected in parallel. A number of feedwater heating lines being less than a number of steam condensers. Each of the feedwater heating lines includes at least one low pressure feedwater heater provided in at least one of the steam condensers to heat the condensed water by steam bled from the low pressure turbines.

摘要翻译： 蒸汽轮机设备包括蒸汽发生器，由蒸汽发生器的蒸汽驱动的多个低压涡轮机，多个蒸汽冷凝器，用于将来自低压涡轮机的蒸汽冷凝成冷凝水，以及将冷凝水供应到 蒸汽发生器作为给水。 给水管线包括并联连接的多个给水加热管线。 一些给水加热线小于多个蒸汽冷凝器。 每个给水加热管线包括设置在至少一个蒸汽冷凝器中的至少一个低压给水加热器，以通过从低压涡轮机排出的蒸汽加热冷凝水。

公开(公告)号：US5791147A

公开(公告)日：1998-08-11

申请号：US739140

申请日：1996-10-28

申请人： James N. Earley ,  Jeffrey D. Hooper ,  Billy H. Stigall ,  John S. Stinson

发明人： James N. Earley ,  Jeffrey D. Hooper ,  Billy H. Stigall ,  John S. Stinson

IPC分类号： F22D1/32 ,  F01K13/02

CPC分类号： F22D1/325

摘要： A steam powered electric power generating station to provide electricity comprises a steam turbine positioned in a steam turbine shell, equipment, such as a heater, a first and a second temperature detectors, and a computer. The steam turbine has necessary blades and a shaft to turn an electrical generator to create electricity. The steam turbine shell mechanically coupled to receive steam to turn the at least one blade steam turbine. The equipment is mechanically coupled to the steam turbine shell to receive steam from the steam turbine shell and receives feed water through an entry port and releases feed water through an exit port. The first temperature detector is positioned to detect a first temperature of the feed water prior to entering the equipment via the entry port. The second temperature detector is positioned to detect a second temperature of the feed water after exiting the equipment via the exit port. The computer is electrically coupled to the first temperature detector and to the second temperature detector and compares the first temperature to the second temperature to generate a temperature difference. Related processes comprise detecting a first temperature of feed water immediately before the feed water has exited the heating equipment; detecting a second temperature of the feed water immediately after the feed water has entered the heating equipment; (c) comparing the first temperature to the second temperature to generate a temperature difference between the first temperature and the second temperature; (d) comparing the temperature difference with a preferred temperature difference to determine whether the temperature difference is within an approved range from the preferred temperature difference; and (e) generating a warning signal to alert the power plant operator if the temperature difference is not within the approved range.

摘要翻译： 用于提供电力的蒸汽动力发电站包括定位在蒸汽涡轮壳体中的蒸汽轮机，诸如加热器，第一和第二温度检测器以及计算机的设备。 蒸汽轮机具有必需的叶片和轴，以转动发电机以产生电力。 汽轮机壳机械连接以接收蒸汽以转动至少一个叶片汽轮机。 该设备机械地联接到汽轮机壳体以接收来自蒸汽轮机壳体的蒸汽并且通过入口端口接收给水并且通过出口排放给水。 第一温度检测器定位成在通过入口进入设备之前检测给水的第一温度。 第二温度检测器定位成在经由出口离开设备之后检测供水的第二温度。 计算机电耦合到第一温度检测器和第二温度检测器，并将第一温度与第二温度进行比较以产生温度差。 相关过程包括在供水已经退出加热设备之前立即检测给水的第一温度; 在供水进入加热设备之后立即检测供水的第二温度; （c）比较第一温度与第二温度以产生第一温度和第二温度之间的温度差; （d）将温度差与优选的温度差进行比较，以确定温度差是否在优选温度差的允许范围内; 以及（e）如果温度差不在允许范围内，则产生警告信号以警告发电厂操作者。

公开(公告)号：US5012429A

公开(公告)日：1991-04-30

申请号：US298346

申请日：1989-01-17

申请人： Joel B. Lantz

发明人： Joel B. Lantz

IPC分类号： F22D1/32 ,  G05D9/12

CPC分类号： G05D9/12 ,  F22D1/325 ,  Y10T137/7306 ,  Y10T137/7313

摘要： A processor controlled supervisory apparatus for a liquid level controller of a feedwater heater obtains DCA characteristics and breakpoints thereof in a programmed manner. A plurality of DCA characteristics are obtained for a plurality of load conditions, and the breakpoints and other operating parameters are stored in a database correlating operation parameters with load conditions. Equations describing the relationship between the parameters and the load conditions are determined by the programmed processor and additional data points determined therefrom to provide load-responsive control for liquid level setpoint. A retrofitting apparatus retrofits the inventive supervisory control apparatus onto existing liquid level controllers.

摘要翻译： 给水加热器的液位控制器的处理器控制监控装置以编程方式获得DCA特性及其断点。 对于多个负载条件获得多个DCA特性，并且将断点和其他操作参数存储在将运算参数与负载条件相关联的数据库中。 描述参数和负载条件之间的关系的等式由编程的处理器和由其确定的附加数据点确定，以提供液位设定点的负载响应控制。 改进装置将本发明的监控装置改装到现有的液位控制器上。

公开(公告)号：US09091183B2

公开(公告)日：2015-07-28

申请号：US13475816

申请日：2012-05-18

申请人： Hussam Zebian ,  Alexander Mitsos

发明人： Hussam Zebian ,  Alexander Mitsos

IPC分类号： F01K7/34 ,  F01K27/00 ,  F01K13/00 ,  F01K13/02 ,  F01K7/22 ,  F01K7/40 ,  F01K17/06 ,  F22D1/32 ,  F01K25/08 ,  F01K7/24

CPC分类号： F01K7/38 ,  F01K7/22 ,  F01K7/24 ,  F01K7/40 ,  F01K13/02 ,  F01K17/06 ,  F01K19/00 ,  F01K25/08 ,  F05D2200/34 ,  F05D2220/31 ,  F05D2260/221 ,  F05D2260/606 ,  F05D2270/20 ,  F05D2270/301 ,  F05D2270/303 ,  F05D2270/3061 ,  F05D2270/66 ,  F22D1/32 ,  F22D1/325 ,  G06F17/10 ,  G06F17/50 ,  Y02E20/18

摘要： Systems and methods are disclosed herein that generally involve a double pinch criterion for optimization of regenerative Rankine cycles. In some embodiments, operating variables such as bleed extraction pressure and bleed flow rate are selected such that a double pinch is obtained in a feedwater heater, thereby improving the efficiency of the Rankine cycle. In particular, a first pinch point is obtained at the onset of condensation of the bleed and a second pinch point is obtained at the exit of the bleed from the feedwater heater. The minimal approach temperature at the first pinch point can be approximately equal to the minimal approach temperature at the second pinch point. Systems that employ regenerative Rankine cycles, methods of operating such systems, and methods of optimizing the operation of such systems are disclosed herein in connection with the double pinch criterion.

摘要翻译： 本文公开的系统和方法通常涉及用于优化再生兰金循环的双重捏合标准。 在一些实施例中，选择诸如排气提取压力和排出流量的操作变量，使得在给水加热器中获得双夹点，从而提高兰金循环的效率。 特别地，在出血冷凝开始时获得第一夹点，并且在从给水加热器排出的出口获得第二夹点。 第一夹点处的最小进近温度可以近似等于第二夹点处的最小进近温度。 本文结合双重捏合标准公开了采用再生兰金循环的系统，操作这种系统的方法以及优化这种系统的操作的方法。

公开(公告)号：US20140130499A1

公开(公告)日：2014-05-15

申请号：US14131499

申请日：2012-06-14

申请人： Carsten Graeber ,  Thomas Loeper ,  Michael Wechsung

发明人： Carsten Graeber ,  Thomas Loeper ,  Michael Wechsung

IPC分类号： F01K7/44 ,  F01K13/02 ,  F01K7/34 ,  F22D1/32

CPC分类号： F01K7/44 ,  F01K7/34 ,  F01K7/40 ,  F01K13/02 ,  F22D1/32 ,  F22D1/325

摘要： A steam turbine installation that has a steam turbine, a steam generator and a feed water pre-heating unit operated by process steam is provided. The steam turbine has an overload bypass line with which main steam can be fed to the feed water pre-heating unit between the steam turbine input and the extraction point during overload operation of the steam turbine, wherein the feed water pre-heating unit has an auxiliary extraction line that is connected to the overload bypass line in such a way that process steam can be extracted from the steam turbine during partial load operation of the steam turbine and added to the feed water pre-heating unit for the additional pre-heating of feed water.

摘要翻译： 提供了一种具有蒸汽轮机，蒸汽发生器和由过程蒸汽操作的给水预热单元的蒸汽轮机设备。 蒸汽轮机具有过载旁通管线，在蒸汽轮机的过载运行期间，主蒸汽可以在蒸汽涡轮机输入和提取点之间供给到给水预热单元，其中给水预热单元具有 辅助抽出管线，其连接到过载旁路管线，使得可以在蒸汽轮机的部分负荷运行期间从蒸汽涡轮机提取过程蒸汽并将其添加到给水预热单元以用于附加预热 给水。