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公开(公告)号：US20150292365A1
公开(公告)日：2015-10-15
申请号：US14749399
申请日：2015-06-24
发明人： Hussam Zebian , Alexander Mitsos
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.
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。
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22.发明申请公开(公告)号：US20120291435A1
公开(公告)日：2012-11-22
申请号：US13475816
申请日：2012-05-18
申请人： Hussam Zebian , Alexander Mitsos
发明人： Hussam Zebian , Alexander Mitsos
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。
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23.发明授权公开(公告)号：US08091361B1
公开(公告)日：2012-01-10
申请号：US12290944
申请日：2008-11-04
申请人： Fred D. Lang
发明人： Fred D. Lang
摘要： This invention relates to a method and apparatus for increasing the final feedwater temperature associated with a regenerative Rankine cycle, said cycle commonly used in thermal systems such as conventional power plants, whose steam generators are fired with a fossil fuel and whose regenerative Rankine cycle employs a reheating of the working fluid. This invention involves the placement of an Exergetic Heater System in the feedwater path of the regenerative Rankine cycle. The Exergetic Heater System conditions and heats feedwater such that the temperature of the cycle's final feedwater as it enters the steam generator has reached a desired value. The Exergetic Heater System receives its driving steam from an Intermediate Pressure turbine extraction.
摘要翻译： 本发明涉及一种用于增加与再生兰金循环相关的最终给水温度的方法和装置，所述循环通常用于诸如常规发电厂的热系统，其蒸汽发生器用化石燃料燃烧，并且其再生兰金循环采用 再加热工作液。 本发明涉及将放射加热器系统放置在再生兰金循环的给水路径中。 过热加热器系统调节和加热给水，使循环的最终给水在进入蒸汽发生器时的温度达到所需值。 过热加热器系统从中压涡轮机提取接收其驱动蒸汽。
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公开(公告)号：US5353653A
公开(公告)日：1994-10-11
申请号：US697777
申请日：1991-05-09
CPC分类号： G01N17/00 , F22D1/325 , F28F19/00 , F28G15/00 , F28F2265/00
摘要： A system for monitoring abnormalities in a heat exchanger having heat-exchange tubes for heating feed water with extraction steam, an inlet and an outlet for the feed water, and a drain cooling zone, includes a process input, an apparatus for calculating the differential pressure between the feed water pressures at the inlet and outlet, an apparatus for computing the heat exchanging performance of the heat exchanger, and judgement apparatus for monitoring the differential pressure and the heat exchanging performance, thereby judging the presence or absence of scale accretion within the heat exchanger end, whenever scale accretion is present, judging the specific locations of the scale accretion in the inner and outer surfaces of the heat-exchange tubes, fluid flow distribution passageways and devices other than the heat-exchange tubes.
摘要翻译： 一种用于监测具有用于使用提取蒸汽加热给水的热交换管，用于给水的入口和出口以及排水冷却区的热交换器的异常的系统，包括过程输入，用于计算差压的装置 在入口和出口处的给水压力之间，用于计算热交换器的热交换性能的装置，以及用于监测压差和热交换性能的判断装置，从而判断热量内是否存在积垢 交换器端，无论何时存在积垢，判断热交换管，流体分配通道和热交换管以外的装置的内表面和外表面的垢积的特定位置。
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公开(公告)号：US4393816A
公开(公告)日：1983-07-19
申请号：US347470
申请日：1982-02-10
申请人： Paul A. Bock
发明人： Paul A. Bock
摘要： A thermodynamic method is described and claimed for improving the quality of wet steam produced by conventional and once through type boilers. Moisture entrained with such steam is first separated in a steam-water separation vessel. The separated moisture is thereafter vaporized by pressure reduction and flashed to form lower pressure steam and condensate containing dissolved solids. The condensate is utilized to preheat fresh boiler feedwater. The lower pressure steam is condensed and supplements the boiler feedwater to form a hotter combined net feedwater stream containing reduced quantities of dissolved solids. Practice of the method, in association with commercially available boilers producing saturated to moderately superheated steam at temperatures of up to about 970.degree. F. and steam pressures of up to about 2,900 psig, has resulted in increases in the quality of the steam produced from about 70% to about 99% (substantially dry steam). Further, the method includes heating of the fresh boiler feedwater from ambient temperature to about 200.degree. F. without the utilization of additional fuel by the boiler system. Also, less fresh boiler feedwater is required to produce the same net process heating value of the steam product.
摘要翻译： 描述和要求的热力学方法用于改善常规和一次通过型锅炉产生的湿蒸汽的质量。 用蒸汽夹带的水分首先在蒸汽 - 水分离容器中分离。 然后分离的水分通过减压蒸发并闪蒸以形成含有溶解固体的低压蒸汽和冷凝物。 冷凝水用于预热新鲜锅炉给水。 较低压力的蒸汽被冷凝并补充锅炉给水以形成含有较少量的溶解固体的较热的组合净给水流。 该方法的实践与在高达约970°F的温度下产生饱和至中等过热蒸汽的市售锅炉相关联，并且蒸汽压力高达约2900psig，导致从约 70％至约99％（基本上干蒸汽）。 此外，该方法包括将新鲜锅炉给水从环境温度加热至约200°F，而不用锅炉系统使用额外的燃料。 此外，需要较少的新鲜锅炉给水以产生蒸汽产品的相同的净过程加热值。
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26.发明授权Method and means for heat exchange between flowing media, preferably for remote heating systems 失效流动介质之间热交换的方法和装置，优选用于远程加热系统
公开(公告)号：US2823650A
公开(公告)日：1958-02-18
申请号：US27069452
申请日：1952-02-04
发明人： HEDBACK TORE J , LUNDMAN GUSTAF G
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公开(公告)号：US20240117759A1
公开(公告)日：2024-04-11
申请号：US18354920
申请日：2023-07-19
摘要： A power generation facility in an embodiment includes: a boiler; a high-pressure turbine to which steam generated in the boiler is introduced; a low-pressure turbine provided downstream of the high-pressure turbine; and a condenser that condenses steam discharged from the low-pressure turbine. The power generation facility further includes: a feed pipe that leads feedwater in the condenser to the boiler; a heat storage and steam generation device that has a heat storage function that uses surplus energy generated in an own system to store heat, and a steam generation function that has part of feedwater led by the feed pipe introduced thereinto and turns the feedwater into steam by the stored heat; and a steam supply pipe that supplies steam generated in the heat storage and steam generation device to an own system.
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公开(公告)号：US20190170020A1
公开(公告)日：2019-06-06
申请号：US16231496
申请日：2018-12-22
申请人： Lidao ZHANG
发明人： Lidao ZHANG
CPC分类号： F01K11/02 , F01K7/16 , F01K7/223 , F01K7/38 , F01K7/40 , F01K23/10 , F02C6/00 , F02C6/18 , F22B1/162 , F22B1/1815 , F22D1/325 , F22D1/34 , F22D1/40 , F22G1/16 , G21C1/04 , G21D1/006 , G21D1/02
摘要： Disclosed is a gas turbine and pressurized water reactor steam turbine combined circulation system, using a heavy duty gas turbine and a pressurized water reactor steam turbine to form a combined circulation system. Heat of the tail gas of the gas turbine is utilized to raise the temperature of a secondary circuit main steam from 272.8° C., and the temperature of the secondary circuit main steam slides between 272.8° C. and 630° C. according to different pressurized water reactor steam yields and different input numbers and loads of the heavy duty gas turbine. The system has a higher heat efficiency than that of the pressurized water reactor steam turbines in the prior art; and as for the electric quantity additionally generated by gas, the heat efficiency of the system is also significantly higher than that of gas-steam combined circulation in the prior art.
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公开(公告)号：US09523513B2
公开(公告)日：2016-12-20
申请号：US13744477
申请日：2013-01-18
发明人： Vincent Jourdain , Jerome Colin
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。
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公开(公告)号：US20150114319A1
公开(公告)日：2015-04-30
申请号：US14523134
申请日：2014-10-24
摘要： The feedwater preheating system includes a feedwater tank and a constant volume recirculation pump. The feedwater tank is adapted to store the feedwater. The feedwater tank includes feed and return lines. The feed line is adapted to feed the feedwater to the HRSG, and the return line enables returning of the feedwater into the feedwater tank. The return line precludes a control valve, and is configured to the feedwater tank to reduce component loss while feedwater recirculation. The constant volume recirculation pump is configured in the feed line to recirculate the feedwater between the HRSG and the feedwater tank. The pump is capable of recirculating the feedwater at constant speed and volume to reduce heat loss while feedwater recirculation, as against the prior art feedwater preheating systems.
摘要翻译： 给水预热系统包括给水箱和恒定体积循环泵。 给水箱适于储存给水。 给水箱包括进料和回流管线。 进料管线适于将进料水供给到HRSG，并且回流管线使得给水回流到给水箱中。 返回管路排除了一个控制阀，并配置给给水箱，以减少给水循环中的部件损失。 恒定体积的再循环泵配置在进料管线中，以使得HRSG和给水箱之间的给水再循环。 与现有技术的给水预热系统相反，该泵能够以恒定速度和体积循环给水，以减少进水循环中的热损失。
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