公开(公告)号：US20200003080A1

公开(公告)日：2020-01-02

申请号：US16453723

申请日：2019-06-26

Applicant: ECHOGEN POWER SYSTEMS, LLC

Inventor： Timothy Held

IPC: F01K3/08 ,  F01K3/12 ,  F01K7/16 ,  F01K7/38 ,  F01K13/00 ,  F01K23/02

Abstract: Systems and methods are provided for generating electricity via a pumped thermal energy storage (“PTES”) system. A system may include a pump configured to circulate a working fluid within a fluid circuit, wherein the working fluid enters the pump at a first pressure and exits at a second pressure; a first heat exchanger; a second heat exchanger; a turbine positioned between the first heat exchanger and the second heat exchanger, configured to expand a first portion of the working fluid to the first pressure; a heat rejection heat exchanger configured to remove thermal energy from a second portion of the working fluid; a high temperature reservoir connected to the first heat exchanger; and a low temperature reservoir connected to the second heat exchanger.

公开(公告)号：US20190203614A1

公开(公告)日：2019-07-04

申请号：US15857532

申请日：2017-12-28

Applicant: GE-Hitachi Nuclear Energy Americas LLC

Inventor： Eric P. Loewen ,  Scott E. Rasmussen

IPC: F01K7/38 ,  G21D5/16 ,  F22B1/02 ,  G21D5/12 ,  F01K7/34 ,  F01K7/44 ,  F01K11/02 ,  F01K19/00

CPC classification number: F01K7/38 ,  F01K7/345 ,  F01K7/44 ,  F01K11/02 ,  F01K19/00 ,  F22B1/023 ,  G21D5/12 ,  G21D5/16

Abstract: Steam generators in power plants exchange energy from a primary medium to a secondary medium for energy extraction. Steam generators includes one or more primary conduits and one or more secondary conduits. The conduits do not intermix the mediums and may thus discriminate among different fluid sources and destinations. One conduit may boil feedwater while another reheats steam for use in lower and higher-pressure turbines, respectively. Valves and other selectors divert steam and/or water into the steam generator or to other turbines or the environment for load balancing and other operational characteristics. Conduits circulate around an interior perimeter of the steam generator immersed in the primary medium and may have different cross-sections, radii, and internal structures depending on contained. A water conduit may have less flow area and a tighter coil radius. A steam conduit may include a swirler and rivulet stopper to intermix water in any steam flow.

公开(公告)号：US10329960B2

公开(公告)日：2019-06-25

申请号：US15106602

申请日：2014-12-17

Applicant: L'Air Liquide, Societe Anonyme pour l'Etude et l'Exploitation des Procedes Georges Claude

Inventor： Benoit Davidian ,  Cyrille Paufique

IPC: F01K3/18 ,  F01K7/16 ,  F01K13/00 ,  F01K25/10 ,  F01K7/22 ,  F01K7/38 ,  F01K23/02 ,  G21D1/02 ,  H02K7/18 ,  F01K23/08 ,  F01D13/00 ,  F01D15/10 ,  F01K11/02 ,  F01K15/00

Abstract: A method for generating electricity by means of a nuclear power plant and a liquid vaporization apparatus involves producing heat energy by means of the nuclear power plant and using the heat energy to vaporize water or to heat water vapor, expanding the water vapor formed in a first turbine and using the first turbine to drive an electricity generator in order to produce electricity, vaporizing liquefied gas coming from a cryogenic storage in order to produce a pressurized gas, reheating the pressurized gas with a part of the water vapor intended for the first turbine of the power plant and expanding the pressurized fluid in a second turbine to produce electricity.

公开(公告)号：US20190145285A1

公开(公告)日：2019-05-16

申请号：US16097978

申请日：2017-04-17

Applicant: Mitsubishi Hitachi Power Systems, Ltd.

Inventor： Ryota TAKAHASHI ,  Issaku FUJITA ,  Kentaro TANAKA

IPC: F01K7/12 ,  F01K7/22 ,  F01K7/38 ,  F22D1/32 ,  F22D11/06

Abstract: A steam turbine plant includes a high-medium pressure turbine having a high-pressure turbine section provided at one end portion in an axial direction and a medium-pressure turbine section provided at the other end portion; a low-pressure turbine disposed coaxially with the high-medium pressure turbine; a condenser configured to cool steam used in the low-pressure turbine to condense the steam into condensate; and a feed-water heater configured to heat the condensate with steam discharged from the high-pressure turbine section. The plant also includes a low-pressure moisture separating and heating device configured to remove moisture of steam discharged from the medium-pressure turbine section, and to heat the steam with a part of steam to be sent to an inlet portion of the high-pressure turbine section and a part of steam to be sent to an inlet portion of the medium-pressure turbine section from an outlet portion of the high-pressure turbine section.

公开(公告)号：US10208630B2

公开(公告)日：2019-02-19

申请号：US15402254

申请日：2017-01-10

Applicant: General Electric Technology GmbH

Inventor： Julia Kirchner ,  Volker Schule

IPC: F01K7/16 ,  F01K7/40 ,  F01K7/26 ,  F01K9/00 ,  F01K1/02 ,  F01K1/10 ,  F01K3/14 ,  F01K3/26 ,  F01K7/02 ,  F01K7/22 ,  F01K7/38 ,  F01K3/06

Abstract: A steam power plant and method for operation the steam power plant is provided, that comprises: a main water-steam-cycle with a high pressure (HP) steam turbine, an intermediate pressure (IP) steam turbine and a low pressure (LP) steam turbine, a condenser, and a feed water tank, wherein low pressure heaters are arranged between said condenser and said feed water tank and wherein a plurality of high pressure heaters are arranged downstream of said feed water tank, whereby said low pressure heaters, said feed water tank and said plurality of high pressure heaters are supplied with steam from a plurality of extractions at said steam turbines.

公开(公告)号：US10196940B2

公开(公告)日：2019-02-05

申请号：US15105254

申请日：2014-12-17

Applicant: L'Air Liquide, Societe Anonyme pour l'Etude et l'Exploitation des Procedes Georges Claude

Inventor： Benoit Davidian ,  Cyrille Paufique

IPC: F01K13/00 ,  F01K7/22 ,  F01K7/38 ,  F01K3/18 ,  F01K23/02 ,  G21D1/02 ,  H02K7/18 ,  F01K23/08 ,  F01D13/00 ,  F01D15/10 ,  F01K7/16 ,  F01K11/02 ,  F01K15/00

Abstract: A method for generating electricity by means of a nuclear power plant and a liquid vaporization apparatus involves, during a first period, producing heat energy by means of the nuclear power plant and using the heat energy to vaporize water or to heat water vapor, expanding the water vapor formed in a first turbine and using the first turbine to drive an electricity generator in order to produce electricity, vaporizing liquefied gas coming from a cryogenic store in order to produce pressurized gas, reheating the pressurized gas with a part of the water vapor intended for the first turbine of the nuclear power plant and expanding the pressurized fluid in a second turbine to produce electricity and, during the second period, liquefying the gas to be vaporized.

公开(公告)号：US10174639B2

公开(公告)日：2019-01-08

申请号：US15420878

申请日：2017-01-31

Applicant: General Electric Company

Inventor： Joseph Philip Klosinski ,  George Vargese Mathai ,  Sanji Ekanayake ,  Alston Ilford Scipio ,  Paul Robert Fernandez

IPC: F01K7/16 ,  F02C3/04 ,  F01K13/02 ,  F01K7/38 ,  F02C6/18 ,  F02C7/26 ,  F01K23/10

Abstract: The present application provides a power generation system. The power generation system may include a gas turbine engine for creating a flow of combustion gases, a steam turbine, and a steam turbine preheating system. The steam turbine preheating system may receive an extraction of the flow of combustion gases and delivers the extraction to the steam turbine to preheat the steam turbine.

公开(公告)号：US09638063B2

公开(公告)日：2017-05-02

申请号：US14475847

申请日：2014-09-03

Applicant: KABUSHIKI KAISHA TOSHIBA

Inventor： Daisuke Asakura ,  Koji Kanbe ,  Tsutomu Shioyama ,  Tomoo Oofuji

IPC: F01D25/32 ,  F01K13/00 ,  F01K7/38 ,  F16T1/38 ,  F01D25/08 ,  F02C6/18

CPC classification number: F01D25/32 ,  F01D25/08 ,  F01K7/38 ,  F01K13/006 ,  F02C6/18 ,  F16T1/38

Abstract: In one embodiment, a steam turbine facility includes drain piping in which a shut-off valve is provided, the drain piping being either a valve drain pipe that leads a drain from the main steam regulating valve to an outside thereof, or a casing drain pipe that leads a drain from the turbine casing to an outside thereof. A heat absorber disposed in a range, upstream of the shut-off valve, of the drain piping to absorb heat of the drain piping.

公开(公告)号：US09328634B2

公开(公告)日：2016-05-03

申请号：US14182022

申请日：2014-02-17

Applicant: Saga University

Inventor： Yasuyuki Ikegami ,  Takafumi Morisaki

IPC: F01K25/06 ,  F01K25/08 ,  F01K25/10 ,  F28B7/00 ,  F01B1/00 ,  F01K7/38

CPC classification number: F01K25/065 ,  F01K7/38 ,  F01K25/06 ,  Y02E10/34

Abstract: There is provided a steam power cycle system that permits to perform an appropriate heat exchange between a working fluid that is a non-azeotropic mixture and a heat source, to enhance the performance of the whole system. More specifically, a plurality of condensers are provided so as to be connected to each other in series, and the working fluid in a gas phase from the expander is introduced into the respective condensers. Consequently, the ratio of a low boiling point substance of the working fluid becomes higher toward the posterior condenser, it is possible to make the condensation temperature of the working fluid lower than that of the anterior condenser. It is therefore possible to make the temperature of the working fluid possibly close to the temperature of the low-temperature fluid, thus permitting an effective use of the difference in temperature of the heat source.

Abstract translation: 提供了一种蒸汽动力循环系统，其允许在非共沸混合物的工作流体和热源之间进行适当的热交换，以增强整个系统的性能。 更具体地说，多个冷凝器被设置为彼此串联连接，并且来自膨胀器的气相中的工作流体被引入到各个冷凝器中。 因此，工作流体的低沸点物质的比例向后冷凝器变高，可以使工作流体的冷凝温度低于前冷凝器的冷凝温度。 因此，可以使工作流体的温度可能接近低温流体的温度，从而有效地利用热源的温度差。

公开(公告)号：US09322298B2

公开(公告)日：2016-04-26

申请号：US14131499

申请日：2012-06-14

Applicant: Carsten Graeber ,  Thomas Loeper ,  Michael Wechsung

Inventor： Carsten Graeber ,  Thomas Loeper ,  Michael Wechsung

IPC: F01K7/34 ,  F01K7/38 ,  F01K7/40 ,  F22D1/32 ,  F01K7/44 ,  F01K13/02

CPC classification number: F01K7/44 ,  F01K7/34 ,  F01K7/40 ,  F01K13/02 ,  F22D1/32 ,  F22D1/325

Abstract: 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.

Abstract translation: 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。