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公开(公告)号：US11530812B2
公开(公告)日：2022-12-20
申请号：US17282022
申请日：2019-09-19
发明人： Jan Brückner , Tobias Schulze , Frank Thomas
摘要： A method for operating a forced-flow steam generator constructed as a waste-heat steam generator having a pre-heater, including pre-heater heating surfaces, and having an evaporator including evaporator heating surfaces connected downstream on the flow medium side of the pre-heater heating surfaces. A device for adjusting a feed water mass flow has a set point for the feed water mass flow. During the creation of the set point for the feed water mass flow, a waste-heat flow transferred to a fluid in the evaporator heating surfaces is determined, and mass storage and energy storage in the fluid in the evaporator heating surfaces is detected during non-steady-state plant operation. A behaviour over time of a mass storage in the evaporator is coupled with a behaviour over time of a mass storage in the pre-heater, wherein scaling is carried out with a ratio of the density changes in the evaporator and pre-heater.
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公开(公告)号：US11035066B2
公开(公告)日：2021-06-15
申请号：US16011094
申请日：2018-06-18
申请人： LG ELECTRONICS INC.
发明人： Wansik Nam
IPC分类号： D06F37/26 , D06F39/00 , D06F58/10 , D06F58/20 , D06F39/08 , F16K15/06 , F22D5/34 , D06F58/30 , D06F25/00
摘要： A clothes treating apparatus includes a case including a treatment chamber for holding clothes, a steam unit for supplying steam to the treatment chamber, a tank module storing water to be supplied to the steam unit, a valve unit disposed in a flow channel connecting the tank module and the steam unit, a water supply pump for generating driving power to transmit water stored in the tank module to the steam unit, and a control unit controlling the steam unit and the water supply pump, wherein the valve unit opens or closes the flow channel by at least one of water and steam flowing in the flow channel.
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公开(公告)号：US10274192B2
公开(公告)日：2019-04-30
申请号：US13744112
申请日：2013-01-17
IPC分类号： F22B29/06 , F22D5/34 , F28F1/00 , F28F9/013 , F28F9/22 , F28F9/26 , F28D7/08 , F22B15/00 , F28F9/02
摘要： Disclosed herein is a once-through evaporator comprising an inlet manifold; one or more inlet headers in fluid communication with the inlet manifold; one or more tube stacks, where each tube stack comprises one or more inclined evaporator tubes; the one or more tube stacks being in fluid communication with the one or more inlet headers; where the inclined tubes are inclined at an angle of less than 90 degrees or greater than 90 degrees to a vertical; one or more outlet headers in fluid communication with one or more tube stacks; and an outlet manifold in fluid communication with the one or more outlet headers.
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公开(公告)号：US20170241298A1
公开(公告)日：2017-08-24
申请号：US15051046
申请日：2016-02-23
CPC分类号： F01K23/101 , F01K23/108 , F22D5/28 , F22D5/30 , F22D5/34 , Y02E20/16
摘要： Various embodiments include a system having: at least one computing device configured to perform actions including: measuring at least one of the following parameters: a steam pressure within a steam drum, a load on a GT, a position of a bypass valve bypassing an HRSG, and a steam flow rate through the steam drum; defining a threshold range for each of: a steam pressure within the steam drum, a load on the GT, a position of the bypass valve bypassing the HRSG and a steam flow rate through the steam drum based upon the measured data and a target steam level; and adjusting the steam flow rate through the steam drum in response to at least one of the measured parameters deviating from the corresponding threshold range.
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5.发明授权Systems and methods for providing override control for a feedwater pump recirculation valve 有权用于为给水泵再循环阀提供过载控制的系统和方法公开(公告)号：US09558854B2
公开(公告)日：2017-01-31
申请号：US13747986
申请日：2013-01-23
发明人： John Petzen , Gautam Chatterji
IPC分类号： G21C7/36 , F04B49/06 , F04B49/24 , F22D5/26 , F22D5/34 , F22D11/02 , F22D11/06 , F04D15/00 , F22D5/20
CPC分类号： F04B49/065 , F04B49/24 , F04B2203/0208 , F04B2205/09 , F04D15/0011 , F22D5/20 , F22D5/26 , F22D5/34 , F22D11/02 , F22D11/06 , G21C7/36
摘要： Systems and methods for providing override control for a feedwater pump recirculation valve are provided. According to one embodiment, a system may include a controller and a processor communicatively coupled to the controller. The processor may be configured to receive one or more measurements associated with pump motor power driving feedwater pump flow. The feedwater pump recirculation valve may be configured to maintain a predetermined minimum recirculation flow through the feedwater pump by regulating recirculation pump flow through a recirculation line. The processor may be also configured to calculate, based at least in part on the one or more measurements, the recirculation pump flow, and compare the recirculation pump flow to the predetermined minimum recirculation flow. Based at least in part on the comparing, the processor may selectively provide an override control signal to the feedwater pump recirculation valve to selectively modify the recirculation pump flow.
摘要翻译： 提供了用于为给水泵再循环阀提供超控的系统和方法。 根据一个实施例，系统可以包括通信地耦合到控制器的控制器和处理器。 处理器可以被配置为接收与泵电机驱动给水泵流量相关联的一个或多个测量。 给水泵再循环阀可以被配置为通过调节通过再循环管线的再循环泵流量来保持通过给水泵的预定的最小再循环流。 处理器还可以被配置为至少部分地基于一个或多个测量来计算再循环泵流量，并将再循环泵流量与预定的最小再循环流程进行比较。 至少部分地基于比较，处理器可以选择性地向给水泵再循环阀提供超控控制信号，以选择性地修改再循环泵流量。
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公开(公告)号：US4869210A
公开(公告)日：1989-09-26
申请号：US247076
申请日：1988-09-20
申请人： Eberhard Wittchow
发明人： Eberhard Wittchow
摘要： A method of operating a once-through steam generator having a first evaporator heating surface formed of a tube wall of a combustion chamber, and a second evaporator heating surface connected in parallel to the first evaporator heating surface at a water inlet side thereof, the second evaporator heating surface being located in a convection chamber post-connected to the combustion chamber at a flue-gas outlet side thereof downstream from a superheating surface as viewed in a flow direction of flue gas, includes opening a water regulating valve preconnected to the second evaporator heating surface in the flow direction of the feedwater, if a predetermined value of a mass flow of the feedwater into the once-through stem generator is exceeded, so as to initiate a partial mass flow of the feedwater into the second evaporator heating surface; and closing the water regulating valve again, if the predetermined value fails to be attained, so as to terminate the partial mass flow of the feedwater into the second evaporator heating surface.
摘要翻译： 一种操作具有由燃烧室的管壁形成的第一蒸发器加热面的直流蒸汽发生器的方法和在其入口侧与第一蒸发器加热面并联连接的第二蒸发器加热面， 蒸发器加热表面位于与沿着烟道气流方向从过热表面下游的烟道气出口侧后连接到燃烧室的对流室中，包括打开预先连接到第二蒸发器的水调节阀 如果超过供给水的质量流量的预定值超过给料水的流动方向的加热表面，以便引起给水进入第二蒸发器加热表面的部分质量流动; 并且如果不能达到预定值，则再次关闭水调节阀，以便终止给水进入第二蒸发器加热表面的部分质量流动。
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公开(公告)号：US20210341139A1
公开(公告)日：2021-11-04
申请号：US17282022
申请日：2019-09-19
发明人： Jan Brückner , Tobias Schulze , Frank Thomas
摘要： A method for operating a forced-flow steam generator constructed as a waste-heat steam generator having a pre-heater, including pre-heater heating surfaces, and having an evaporator including evaporator heating surfaces connected downstream on the flow medium side of the pre-heater heating surfaces. A device for adjusting a feed water mass flow has a set point for the feed water mass flow. During the creation of the set point for the feed water mass flow, a waste-heat flow transferred to a fluid in the evaporator heating surfaces is determined, and mass storage and energy storage in the fluid in the evaporator heating surfaces is detected during non-steady-state plant operation. A behaviour over time of a mass storage in the evaporator is coupled with a behaviour over time of a mass storage in the pre-heater, wherein scaling is carried out with a ratio of the density changes in the evaporator and pre-heater
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公开(公告)号：US20200011537A1
公开(公告)日：2020-01-09
申请号：US16482927
申请日：2018-01-30
申请人： LG Electronics Inc.
发明人： Eunkyoung YOON , Jaekyung YANG , Hakjoo LIM , Yongsoo LEE
摘要： A steam generator and a cooking device including the same, according to an embodiment of the present invention may include a water supply pipe into which steam water is introduced, a heating chamber having a chamber body and a chamber cover, and a steam heater configured to provide heat, wherein the steam heater is provided to be embedded in the chamber body and the chamber body includes a plurality of partition walls protruding in one direction along an inner peripheral surface to form a Z-shaped steam flow path through which supply water introduced into the chamber body and steam generated by heating the supply water flow. Therefore, the heat transfer, which had been concentrated only in a predetermined region, may be dispersed by the flow path formed in the chamber body, thereby stably generating the steam even in repetitive steam generation operation.
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9.发明申请公开(公告)号：US20170292512A1
公开(公告)日：2017-10-12
申请号：US15383466
申请日：2016-12-19
发明人： John Petzen , Gautam Chatterji
CPC分类号： F04B49/065 , F04B49/24 , F04B2203/0208 , F04B2205/09 , F04D15/0011 , F22D5/20 , F22D5/26 , F22D5/34 , F22D11/02 , F22D11/06 , G21C7/36
摘要： Systems and methods for providing override control for a feedwater pump recirculation valve are provided. According to one embodiment, a system may include a controller and a processor communicatively coupled to the controller. The processor may be configured to receive one or more measurements associated with pump motor power driving feedwater pump flow. The feedwater pump recirculation valve may be configured to maintain a predetermined minimum recirculation flow through the feedwater pump by regulating recirculation pump flow through a recirculation line. The processor may be also configured to calculate, based at least in part on the one or more measurements, the recirculation pump flow, and compare the recirculation pump flow to the predetermined minimum recirculation flow. Based at least in part on the comparing, the processor may selectively provide an override control signal to the feedwater pump recirculation valve to selectively modify the recirculation pump flow.
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公开(公告)号：US09746174B2
公开(公告)日：2017-08-29
申请号：US13744121
申请日：2013-01-17
IPC分类号： F22B29/06 , F22D5/34 , F28F1/00 , F28F9/013 , F28F9/22 , F28F9/26 , F28D7/08 , F22B15/00 , F28F9/02
CPC分类号： F22B29/06 , F22B15/00 , F22D5/34 , F28D7/082 , F28F1/00 , F28F9/013 , F28F9/0275 , F28F9/22 , F28F9/26 , Y10T137/0324
摘要： Disclosed herein is a once-through evaporator comprising an inlet manifold; one or more inlet headers in fluid communication with the inlet manifold; one or more tube stacks, where each tube stack comprises one or more substantially horizontal evaporator tubes; the one or more tube stacks being in fluid communication with the one or more inlet headers; one or more outlet headers in fluid communication with one or more tube stacks; an outlet manifold in fluid communication with the one or more outlet headers; and a plurality of flow control devices to dynamically control the fluid flow to a respective inlet header.
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