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1. 发明授权

US09435228B2 Air cooling system and method for a heat recovery steam generator inlet 有权
标题翻译：用于热回收蒸汽发生器入口的空气冷却系统和方法
公开(公告)号：US09435228B2
公开(公告)日：2016-09-06
申请号：US14248887
申请日：2014-04-09
申请人： HRST, Inc.
发明人： Amy L. Sieben , Bryan F. Craig
IPC分类号： F02C1/00 , F01K23/10 , F22B1/18 , F22B35/00 , F22G5/12
CPC分类号： F01K23/101 , F01K23/10 , F22B1/1815 , F22B35/007 , F22G5/12 , Y02E20/16
摘要： The air cooling system and method for a heat recovery steam generator (HRSG) inlet provides a combined cycle power plant utilizing a powerful fan coupled to ductwork connected to pipes that enter the HRSG inlet duct coupled to an exhaust duct of a Combustion Turbine (CT) for lowering the temperature of the CT exhaust gas provided to the heat recovery steam generator by the CT. The cool air injection system is utilized during low load operation or startup of the CT to ensure that spray water from an inter-stage desuperheater in an HRSG is fully evaporated prior to entering the downstream superheater or reheater. A feedback system includes temperature elements measuring the mix temperature that regulates the cooling air injection rate into the HRSG inlet.
摘要翻译：用于热回收蒸汽发生器（HRSG）入口的空气冷却系统和方法提供了一种联合循环发电厂，其利用连接到管道的强大风扇，其连接到与燃烧涡轮机（CT）的排气管道连接的HRSG入口管道，用于降低通过CT提供给热回收蒸汽发生器的CT排气的温度。在低负载运行或启动CT期间，使用冷空气注入系统，以确保在进入下游过热器或再热器之前，来自HRSG中的级间过热降温器的喷水完全蒸发。反馈系统包括测量混合温度的温度元件，其调节进入HRSG入口的冷却空气喷射速率。

2. 发明授权

US11892164B2 Viewport for high temperature combustion zones 有权
公开(公告)号：US11892164B2
公开(公告)日：2024-02-06
申请号：US18119944
申请日：2023-03-10
申请人： HRST, Inc.
发明人： Lester Stanley , Darryl Nagel , Robert Tretter , Joshua Himes , Matthew Adams , Lauri Reponen , Thomas George , Russell Marzette
IPC分类号： F23M11/04 , F24C15/00 , F27D21/02 , F23M7/02
CPC分类号： F23M11/042 , F23M7/02 , F23M11/04 , F23M11/045 , F23M2900/05004 , F24C15/004 , F27D21/02
摘要： A viewport for a combustion zone includes an inner casing having a flange extending into the combustion zone. A first layer of ceramic fiber insulation is exterior to the inner casing. A middle casing includes two panes of quartz glass separated by traverse plates. A second layer of ceramic fiber insulation is exterior to the middle casing. An outer casing is positioned to the exterior of the second layer of insulation. The middle casing includes L-shaped ledges having third and fourth layers of ceramic insulation. The panes of glass are each positioned between layers of insulation and the insulation positioned in the L-shaped ledges. The viewport is modular enabling the separation of the first layer of insulation, the middle casing, the second layer of insulation and the outer casing from the combustion zone for maintenance or repair. The viewport minimizes heat migration to the outer casing during use.

3. 发明授权

US11073348B2 Tube shaker 有权
公开(公告)号：US11073348B2
公开(公告)日：2021-07-27
申请号：US16600868
申请日：2019-10-14
申请人： HRST, Inc.
发明人： Kyle P. Sogard , Lester S. Stanley , Scott J. Bratberg
IPC分类号： F28G7/00 , F22B37/48 , B08B9/023
摘要： The tube cleaning device has a frame having a plurality of top and bottom vertical slots and a first and second upper slotted bracket, each bracket being located above an upper and lower window. First and second lower brackets are located below the windows forming a ledge. First and second riggings engage the slots and releasably connect the frame to a tube bank. A spreader bar is inserted through a window. A releasable connector secures the spreader bar to the frame. A vibrating motor is releasably secured to the frame. Vibration of the motor is passed through the frame to the spreader bar, which vibrates the tubes to effectuate cleaning.

4. 发明授权

US10281172B2 Liner fabrication tool 有权
公开(公告)号：US10281172B2
公开(公告)日：2019-05-07
申请号：US15280489
申请日：2016-09-29
申请人： HRST, Inc.
发明人： Robert James Krowech , Darryl Nagel
IPC分类号： F24H8/00 , B25B31/00
摘要： A liner fabrication tool includes a handle engaged to a first cam support and a second cam support where each of the cam supports has forward edge. An axle extends between the first cam support and the second cam support. A gripper is rotatably engaged to the axle between the first cam support and the second cam support. The gripper includes a first wall, a second wall, and a base extending between the first wall and the second wall, the base has an opening where the opening is positioned between and proximate to the forward edges. The opening receives a pin of a liner and insulation system where rotation of the handle in a forward direction applies leverage against the first cam support and the second cam support to bind the pin in the opening and compress the liner and insulation system immediately prior to welding.

5. 发明申请

US20140216001A1 AIR COOLING SYSTEM AND METHOD FOR A HEAT RECOVERY STEAM GENERATOR INLET 审中-公开
标题翻译：用于热回收蒸汽发生器入口的空气冷却系统和方法
公开(公告)号：US20140216001A1
公开(公告)日：2014-08-07
申请号：US14248887
申请日：2014-04-09
申请人： HRST, Inc.
发明人： Amy L. Sieben , Bryan F. Craig
IPC分类号： F01K23/10
CPC分类号： F01K23/101 , F01K23/10 , F22B1/1815 , F22B35/007 , F22G5/12 , Y02E20/16
摘要： The air cooling system and method for a heat recovery steam generator (HRSG) inlet provides a combined cycle power plant utilizing a powerful fan coupled to ductwork connected to pipes that enter the HRSG inlet duct coupled to an exhaust duct of a Combustion Turbine (CT) for lowering the temperature of the CT exhaust gas provided to the heat recovery steam generator by the CT. The cool air injection system is utilized during low load operation or startup of the CT to ensure that spray water from an inter-stage desuperheater in an HRSG is fully evaporated prior to entering the downstream superheater or reheater. A feedback system includes temperature elements measuring the mix temperature that regulates the cooling air injection rate into the HRSG inlet.
摘要翻译：用于热回收蒸汽发生器（HRSG）入口的空气冷却系统和方法提供了一种联合循环发电厂，其利用连接到管道的强大风扇，其连接到与燃烧涡轮机（CT）的排气管道连接的HRSG入口管道，用于降低通过CT提供给热回收蒸汽发生器的CT排气的温度。在低负载运行或启动CT期间，使用冷空气注入系统，以确保在进入下游过热器或再热器之前，来自HRSG中的级间过热降温器的喷水完全蒸发。反馈系统包括测量混合温度的温度元件，其调节进入HRSG入口的冷却空气喷射速率。

6. 发明授权

US11892160B1 System to achieve full combustion turbine load in HRSG limited combined cycle plants 有权
公开(公告)号：US11892160B1
公开(公告)日：2024-02-06
申请号：US17901311
申请日：2022-09-01
申请人： HRST, Inc.
发明人： Victor Ferris , Anand Gopa Kumar , Evan Almberg , Bryan Craig
IPC分类号： F22B1/18 , F22D5/30 , F22B35/10 , F22D5/34 , F22D1/28
CPC分类号： F22D5/30 , F22B35/10 , F22D1/28 , F22D5/34
摘要： A method of suppressing steam production in a HRSG where a volume of feed water is diverted upstream bypassing a portion of the economizer and returning the volume of diverted feed water to a downstream portion of the economizer. A control logic circuit is used to manipulate a suppression control valve regulating the bypassed feed water, thereby reducing the temperature of water in the steam drum. Bypassing feed water flow into a downstream portion of an economizer reduces the steam production rate in the steam drum by increasing the evaporator approach temperature, permitting gas turbines to operate at base load even after an upgrade, by preventing the waste heat boiler from exceeding its rated capacity and pressure.

7. 发明申请

US20170087672A1 Liner Fabrication Tool 审中-公开
公开(公告)号：US20170087672A1
公开(公告)日：2017-03-30
申请号：US15280489
申请日：2016-09-29
申请人： HRST, Inc.
发明人： Robert James Krowech , Darryl Nagel
IPC分类号： B23K37/04
CPC分类号： F27D17/002 , F27D1/16
摘要： A liner fabrication tool includes a handle engaged to a first cam support and a second cam support where each of the cam supports has forward edge. An axle extends between the first cam support and the second cam support. A gripper is rotatably engaged to the axle between the first cam support and the second cam support. The gripper includes a first wall, a second wall, and a base extending between the first wall and the second wall, the base has an opening where the opening is positioned between and proximate to the forward edges. The opening receives a pin of a liner and insulation system where rotation of the handle in a forward direction applies leverage against the first cam support and the second cam support to bind the pin in the opening and compress the liner and insulation system immediately prior to welding.

8. 发明公开

US20230213189A1 VIEWPORT FOR HIGH TEMPERATURE COMBUSTION ZONES 审中-公开
公开(公告)号：US20230213189A1
公开(公告)日：2023-07-06
申请号：US18119944
申请日：2023-03-10
申请人： HRST, Inc.
发明人： Lester Stanley , Darryl Nagel , Robert Tretter , Joshua Himes , Matthew Adams , Lauri Reponen , Thomas George , Russell Marzette
IPC分类号： F23M11/04
CPC分类号： F23M11/042 , F23M2900/05004 , F24C15/004
摘要： A viewport for a combustion zone includes an inner casing having a flange extending into the combustion zone. A first layer of ceramic fiber insulation is exterior to the inner casing. A middle casing includes two panes of quartz glass separated by traverse plates. A second layer of ceramic fiber insulation is exterior to the middle casing. An outer casing is positioned to the exterior of the second layer of insulation. The middle casing includes L-shaped ledges having third and fourth layers of ceramic insulation. The panes of glass are each positioned between layers of insulation and the insulation positioned in the L-shaped ledges. The viewport is modular enabling the separation of the first layer of insulation, the middle casing, the second layer of insulation and the outer casing from the combustion zone for maintenance or repair. The viewport minimizes heat migration to the outer casing during use.

9. 发明授权

US11603992B2 Viewport for high temperature combustion zones 有权
公开(公告)号：US11603992B2
公开(公告)日：2023-03-14
申请号：US16814433
申请日：2020-03-10
申请人： HRST, Inc.
发明人： Lester Stanley , Darryl Nagel , Robert Tretter , Joshua Himes , Matthew Adams , Lauri Reponen , Thomas George , Russell Marzette
IPC分类号： F23M11/04 , F24C15/00 , F27D21/02 , F23M7/02
摘要： A viewport for a combustion zone includes an inner casing having a flange extending into the combustion zone. A first layer of ceramic fiber insulation is exterior to the inner casing. A middle casing includes two panes of quartz glass separated by traverse plates. A second layer of ceramic fiber insulation is exterior to the middle casing. An outer casing is positioned to the exterior of the second layer of insulation. The middle casing includes L-shaped ledges having third and fourth layers of ceramic insulation. The panes of glass are each positioned between layers of insulation and the insulation positioned in the L-shaped ledges. The viewport is modular enabling the separation of the first layer of insulation, the middle casing, the second layer of insulation and the outer casing from the combustion zone for maintenance or repair. The viewport minimizes heat migration to the outer casing during use.

10. 发明申请

US20210285638A1 VIEWPORT FOR HIGH TEMPERATURE COMBUSTION ZONES 有权
公开(公告)号：US20210285638A1
公开(公告)日：2021-09-16
申请号：US16814433
申请日：2020-03-10
申请人： HRST, Inc.
发明人： Lester Stanley , Darryl Nagel , Robert Tretter , Joshua Himes , Matthew Adams , Lauri Reponen , Thomas George , Russell Marzette
IPC分类号： F23M11/04
摘要： A viewport for a combustion zone includes an inner casing having a flange extending into the combustion zone. A first layer of ceramic fiber insulation is exterior to the inner casing. A middle casing includes two panes of quartz glass separated by traverse plates. A second layer of ceramic fiber insulation is exterior to the middle casing. An outer casing is positioned to the exterior of the second layer of insulation. The middle casing includes L-shaped ledges having third and fourth layers of ceramic insulation. The panes of glass are each positioned between layers of insulation and the insulation positioned in the L-shaped ledges. The viewport is modular enabling the separation of the first layer of insulation, the middle casing, the second layer of insulation and the outer casing from the combustion zone for maintenance or repair. The viewport minimizes heat migration to the outer casing during use.

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