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1. 发明授权

US10358947B2 Combined cycle gas turbine plant 有权
公开(公告)号：US10358947B2
公开(公告)日：2019-07-23
申请号：US15121587
申请日：2015-03-27
申请人： MITSUBISHI HITACHI POWER SYSTEMS, LTD. , MITSUBISHI HITACHI POWER SYSTEMS EUROPE, LTD.
发明人： Yoshiyuki Yokoyama , Jose Manuel Martinez , Elvio Rubio , Pablo Ratia
IPC分类号： F01K23/10 , F02C9/42 , F01K5/02 , F01K7/34 , F02C3/04 , H02K7/18 , F01K23/16
摘要： This combined cycle gas turbine plant has a gas turbine (104) and a steam turbine (106) mounted on the same shaft. A control system is configured for switching the plant from a rated mode of operation, in which the plant is operated on gas turbine output and steam turbine output, to a reduced load mode of operation, in which the plant is operated on gas turbine output alone. The switch from the rated mode of operation to the reduced load mode of operation occurs if plant demand decreases below a predetermined threshold. The steam turbine is run under full speed no load conditions in the reduced load mode of operation, and is heated using controlled steam admission, to maintain the steam turbine in a heated ‘stand-by’ state.

2. 发明授权

US10309261B2 Method for coupling a steam turbine and a gas turbine at a desired differential angle 有权
公开(公告)号：US10309261B2
公开(公告)日：2019-06-04
申请号：US14896377
申请日：2014-06-06
申请人： Siemens Aktiengesellschaft
发明人： Gerta Zimmer
IPC分类号： F16D48/06 , F01K23/16 , F01D19/00 , F16D48/00 , F02C7/26 , F02C6/18
摘要： A method and an associated arrangement for coupling a rotational device, particularly a steam turbine, and a shaft device, particularly a gas turbine, includes the following steps: 1) accelerating the rotational device up to an output rotational speed that is below the rotational speed of the shaft device; 2) detecting a differential angle between the shaft device and the rotational device; and 3) accelerating the rotational device with an acceleration value that is derived from the target rotational speed difference, which is formed as a function of the detected differential angle, the acceleration and a desired target coupling angle.

3. 发明申请

US20180209303A1 ALIGNMENT APPARATUS FOR COUPLING DIAPHRAGMS OF TURBINES 审中-公开
公开(公告)号：US20180209303A1
公开(公告)日：2018-07-26
申请号：US15416038
申请日：2017-01-26
申请人： General Electric Company
发明人： Martin James Jasper , Ajay Gangadhar Patil , Brad Wilson VanTassel
IPC分类号： F01D25/24 , F01K23/16 , F01K23/10 , F01D9/02
CPC分类号： F01D25/246 , F01D9/02 , F01D9/042 , F05D2220/31 , F05D2220/32 , F05D2220/76 , F05D2230/61 , F05D2250/292 , F05D2260/30 , Y02E20/16
摘要： Various embodiments of the disclosure include an alignment apparatus for assembly alignment and load sharing. The alignment apparatus may include: an alignment pin including a first end and an opposing, second end, wherein the first end is configured to couple with a first hole in a first turbine nozzle diaphragm and the second end is configured to couple with a second hole in a second, adjacent turbine nozzle diaphragm. Embodiments of the disclosure may also include a turbine and a combined-cycle power plant. The turbine may include: a first nozzle diaphragm; and a second, adjacent nozzle diaphragm, wherein the first diaphragm is directly coupled to the second diaphragm. The combined-cycle power plant may include: a steam turbine; a gas turbine; a first nozzle diaphragm within the gas turbine; a second, adjacent nozzle diaphragm within the gas turbine; and an alignment pin coupling the first diaphragm directly to the second diaphragm.

4. 发明申请

US20180135468A1 COMBINED CYCLE PLANT, DEVICE FOR CONTROLLING SAID PLANT, AND METHOD FOR STARTING UP SAID PLANT 审中-公开
公开(公告)号：US20180135468A1
公开(公告)日：2018-05-17
申请号：US15574629
申请日：2016-05-25
申请人： MITSUBISHI HITACHI POWER SYSTEMS, LTD.
发明人： Masayuki KAYAHARA , Elvio RUBIO , Pablo RATIA , Daniel Carlos MORA
IPC分类号： F01K23/10 , F01K13/02 , F01D19/00 , F02C7/26 , F01K7/16 , F01K23/16
CPC分类号： F01K23/101 , F01D15/10 , F01D19/00 , F01K7/165 , F01K13/02 , F01K23/10 , F01K23/16 , F02C7/26 , F05D2270/053 , Y02E20/16
摘要： A combined cycle plant, a device for controlling a combined cycle plant, and a method for starting up a combined cycle plant, wherein the time for starting up the combined cycle plant can be shortened by providing: a gas turbine having a compressor, a combustor, and a turbine; a heat recovery steam generator for generating steam by means of the exhaust heat of exhaust gas from the gas turbine; a steam turbine driven by means of the steam generated by the heat recovery steam generator; and a control device configured to set a standby load for the gas turbine during a start-up continuously to change in accordance with a change in metal temperature of the steam turbine.

5. 发明申请

US20140102102A1 METHOD AND A SYSTEM FOR MAINTAINING CONSTANT POWER OUTPUT IN LOW PRESSURE STAGES OF STEAM TURBINE UNDER VARIABLE EXTRACTION OF WORKING FLUID 审中-公开
标题翻译：用于维持工作流体可变提取的蒸汽涡轮机低压阶段恒定功率输出的方法和系统
公开(公告)号：US20140102102A1
公开(公告)日：2014-04-17
申请号：US14049403
申请日：2013-10-09
申请人： KRISHNA KUMAR BINDINGNAVALE RANGA
发明人： KRISHNA KUMAR BINDINGNAVALE RANGA
IPC分类号： F01K7/16 , F01K23/16 , F01K13/02
CPC分类号： F01K7/165 , F01K7/16 , F01K13/02 , F01K23/16
摘要： The various embodiments herein provide a method and a system for maintaining a constant power output from the low pressure stages of an extraction-condensing type steam turbine under the large variations of extraction or bleed. The method comprises of keeping the flow of working fluid to the low pressure stages constant for a wide range of variations in extraction. The embodiments herein utilizes a pressure reducing and de-superheating stations (PRDS) and an Auxiliary Quick Start™ turbine to maintain the constant flow of working fluid or alternatively two pressure reducing and de-superheating stations (PRDS) for the same. The Auxiliary Quick Start™ turbine or PRDS is used to maintain the constant power output from the low pressure stages of the extraction-condensing type steam turbine.
摘要翻译：本文的各种实施例提供了一种用于在提取或渗出的大变化下保持来自抽出 - 冷凝型蒸汽轮机的低压级的恒定功率输出的方法和系统。该方法包括将工作流体的流动保持在低压级中，以保持大范围的提取变化。本文的实施例使用减压和去过热站（PRDS）和辅助快速启动涡轮机来维持工作流体的恒定流量，或者替代地，两个减压和去过热站（PRDS）。辅助快速启动™涡轮机或PRDS用于维持抽出冷凝式蒸汽轮机的低压级的恒定功率输出。

6. 发明授权

US6141952A Method of operating a combined-cycle power plant 失效
标题翻译：运行联合循环发电厂的方法
公开(公告)号：US6141952A
公开(公告)日：2000-11-07
申请号：US156757
申请日：1998-09-18
申请人： Rolf Bachmann , Fredy Hausermann , Peter Muller , Gerhard Weiss
发明人： Rolf Bachmann , Fredy Hausermann , Peter Muller , Gerhard Weiss
IPC分类号： F01K7/18 , F01K23/10 , F01K23/16 , F02C6/18
CPC分类号： F01K23/10 , F01K23/101 , Y02E20/16
摘要： In a method of operating a combined-cycle plant, valves (21) acting upstream of a high-pressure steam turbine (12) are completely closed in the event of load shedding. The gas-turbine group (A+8) is uncoupled from an intermediate-pressure/low-pressure steam turbine (11) in such a way that the gas-turbine group can go into island mode. In this case, the speed of the uncoupled steam turbine (11) is not greater than the speed of the gas-turbine group (A+8), and steam (16) in the flow path of a reheater (10a) belonging to the heat-recovery steam generator (10) expands freely through the intermediate-pressure/low-pressure steam turbine (11), in the course of which this expansion does not cause the speed of the gas-turbine group (A+8) to exceed its protective speed.
摘要翻译：在操作联合循环设备的方法中，在负载脱落的情况下，在高压蒸汽轮机（12）上游作用的阀门（21）完全关闭。燃气轮机组（A + 8）与中压/低压蒸汽涡轮机（11）分离，使得燃气轮机组能够进入岛模式。在这种情况下，不连接的蒸汽轮机（11）的速度不大于燃气轮机组（A + 8）的速度，属于该燃气轮机组的再热器（10a）的流路中的蒸汽（16）热回收蒸汽发生器（10）通过中压/低压蒸汽轮机（11）自由膨胀，在此过程中，这种膨胀不会导致燃气轮机组（A + 8）的速度超过其保护速度。

7. 发明授权

US5839269A Method of operating a combined gas and power steam plant 失效
标题翻译：操作组合式气体和动力蒸汽设备的方法
公开(公告)号：US5839269A
公开(公告)日：1998-11-24
申请号：US978879
申请日：1997-11-26
申请人： Hans Ulrich Frutschi
发明人： Hans Ulrich Frutschi
IPC分类号： F01K7/18 , F01K23/10 , F01K23/16 , F22B1/18 , F02C6/18
CPC分类号： F01K23/106
摘要： In a method of operating a power station plant, which consists of a gas-turbine group (I), a steam-generating stage (II) consisting of a waste-heat steam generator (15), and a steam cycle (III), a liquid quantity increased above 100% circulates in a heat-exchange stage (15a), operating in the low temperature range, of the waste-heat steam generator (15). The portion above 100% of this liquid quantity is diverted at the end of said heat-exchange stage (15a) and is evaporated in at least one pressure stage (26). Steam (37) arising herein is then fed to a steam turbine (17) at a suitable point. A still hot liquid quantity (36) from the pressure stage (26) is fed into a feed-water tank and deaerator (22), and steam (33) arising herein is fed to a further steam turbine (18) at a suitable point.
摘要翻译：在由燃气轮机组（I），由废热蒸汽发生器（15）和蒸汽循环（III）构成的蒸汽发生级（II）构成的电站设备的运转方法中，在废热蒸汽发生器（15）的低温范围内的热交换阶段（15a）中循环的液体量超过100％。高于该液体量的100％的部分在所述热交换级（15a）的末端转向，并在至少一个压力级（26）中蒸发。然后在此产生的蒸汽（37）在合适的点被供给到蒸汽涡轮机（17）。来自压力级（26）的仍然热的液体量（36）被供给到给水箱和除气器（22）中，并且本文产生的蒸汽（33）在合适的点被供给到另一汽轮机（18）。

8. 发明授权

US5687559A Hydrogen-combustion gas turbine plant 失效
标题翻译：氢燃气轮机厂
公开(公告)号：US5687559A
公开(公告)日：1997-11-18
申请号：US601323
申请日：1996-02-16
申请人： Iwataro Sato
发明人： Iwataro Sato
IPC分类号： F01K7/22 , F01K23/06 , F01K23/16 , F01K25/00 , F02C1/08 , F02C1/10 , F02C3/22 , F02C3/34 , F02C6/00 , F02C1/06
CPC分类号： F01K25/005 , F02C1/08 , F02C3/22
摘要： A hydrogen-combustion gas turbine plant includes a first system for using inert gas as a working fluid, and a second system for using steam as a working fluid. The first system includes a compressor on a turbine shaft, a first heat exchanger, and a second heat exchanger. The first heat exchanger heats gas compressed by the compressor and supplies the compressed gas to a high pressure intake of a second turbine. The second heat exchanger cools gas exhausted from the second turbine and supplies the cooled gas to a low pressure intake of the compressor. The second system includes the first heat exchanger and the second heat exchanger. The first heat exchanger uses heat generated by combustion of a gas mixture including hydrogen and oxygen to heat the inert gas, and supplies steam resulting from the combustion to a high pressure intake of a first turbine. The second heat exchanger uses heat from the inert gas of the first system to heat steam exhausted from a low temperature outlet of the first turbine, and passes the heated steam to a third turbine.
摘要翻译：氢燃烧汽轮机设备包括使用惰性气体作为工作流体的第一系统和使用蒸汽作为工作流体的第二系统。第一系统包括涡轮轴上的压缩机，第一热交换器和第二热交换器。第一热交换器加热由压缩机压缩的气体，并将压缩气体供应到第二涡轮机的高压进气口。第二热交换器冷却从第二涡轮机排出的气体并将冷却的气体供应到压缩机的低压进气口。第二系统包括第一热交换器和第二热交换器。第一热交换器使用由包括氢和氧的气体混合物的燃烧产生的热量来加热惰性气体，并且将从燃烧产生的蒸汽提供给第一涡轮机的高压进气口。第二热交换器使用来自第一系统的惰性气体的热量来加热从第一涡轮机的低温出口排出的蒸汽，并将加热的蒸汽传递到第三涡轮机。

9. 发明授权

US5301499A Overspeed anticipation and control system for single shaft combined cycle gas and steam turbine unit 失效
标题翻译：单轴联合循环燃气和蒸汽轮机单元的超速预期和控制系统
公开(公告)号：US5301499A
公开(公告)日：1994-04-12
申请号：US544983
申请日：1990-06-28
申请人： Jens Kure-Jensen , William I. Rowen , James H. Moore
发明人： Jens Kure-Jensen , William I. Rowen , James H. Moore
IPC分类号： F01D15/10 , F01D17/04 , F01D17/24 , F01D21/02 , F01K13/00 , F01K23/10 , F01K23/16 , F02C6/00 , G05D13/62 , F02C6/18
CPC分类号： F01K23/16 , F01K23/108 , F05B2200/11 , Y02E20/16
摘要： A system and method for anticipating and controlling overspeed in a combined cycle turbine of the type having a gas turbine with a fuel flow control valve and a steam turbine with at least one steam control valve both disposed on a single shaft and having a heat recovery steam generator heated by said gas turbine and connected to supply steam to the steam control valve, the combined cycle turbine having a unified control system and driving a load. Below a preselected shaft speed the gas turbine fuel command signal controls power. Above the preselected shaft speed the steam turbine speed signal also controls power. Anticipation of overspeed under severe transient load changes, such as loss of electrical load, is provided by a power load unbalance system, wherein gas turbine power and steam turbine power responsive signals are summed after proportionately scaled power responsive signals exceed load by a preselected amount, whereby appropriate action is taken to reduce power before significant overspeed can occur.
摘要翻译：一种用于预期和控制具有带有燃料流量控制阀的燃气轮机的类型的联合循环涡轮机中的超速的系统和方法，以及具有至少一个蒸汽控制阀的蒸汽涡轮机，两个蒸汽控制阀均设置在单个轴上并具有热回收蒸汽发电机由所述燃气轮机加热并连接以向蒸汽控制阀供应蒸汽，所述组合循环涡轮机具有统一的控制系统并驱动负载。低于预选轴转速，燃气轮机燃油指令信号控制功率。高于预选轴速度，蒸汽轮机速度信号也控制功率。在电力负载不平衡系统提供诸如电力负载损失等严重瞬变负载变化下的超速预期，其中燃气轮机功率和蒸汽涡轮机功率响应信号在按比例缩放的功率响应信号以预选量超过负载后相加，因此在发生显着的超速之前采取适当的动作来降低功率。

10. 发明授权

US5203160A Combined generating plant and its start-up control device and start-up control method 失效
标题翻译：联合发电厂及其启动控制装置及启动控制方法
公开(公告)号：US5203160A
公开(公告)日：1993-04-20
申请号：US779093
申请日：1991-10-18
申请人： Jiro Ozono
发明人： Jiro Ozono
IPC分类号： F01K7/20 , F01D19/00 , F01K23/10 , F01K23/16 , F02C6/18
CPC分类号： F01K23/16 , F01D19/00 , F01K23/108 , F02C6/18 , Y02E20/16
摘要： A combined cycle generating plant wherein a gas turbine, a generator and a steam turbine are arranged on the same shaft, equipped with steam generating means that provides a source of high pressure steam and low pressure steam produced by the waste heat from the gas turbine, a high pressure steam regulating valve that controls the high pressure steam flowing into the high pressure turbine and a low pressure steam regulating valve that controls the low pressure steam, and provided with an auxiliary steam system for start-up purposes within the low pressure steam system. The plant also provides a start-up control device for start-up of the low pressure turbine using auxiliary steam from the auxiliary steam system when the combined cycle generating plant is in cold start condition and provides a start-up control device that controls start-up of the high pressure turbine when the combined cycle generating plant is in warm start condition.
摘要翻译：一种组合循环发电设备，其中燃气轮机，发电机和蒸汽轮机布置在同一轴上，配备有蒸汽发生装置，蒸汽发生装置提供由来自燃气轮机的废热产生的高压蒸汽和低压蒸汽源，用于控制流入高压汽轮机的高压蒸汽的高压蒸汽调节阀和控制低压蒸汽的低压蒸汽调节阀，并且在低压蒸汽系统内设置有用于起动目的的辅助蒸汽系统。该工厂还提供了一种启动控制装置，用于在联合循环发电厂处于冷启动状态时使用来自辅助蒸汽系统的辅助蒸汽启动低压涡轮机，并提供启动控制装置，当联合循环发电厂处于暖启动状态时，高压涡轮机的上升。

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