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公开(公告)号：US11170906B2
公开(公告)日：2021-11-09
申请号：US16176618
申请日：2018-10-31
摘要： An electro-technical device, includes an input electrical connection supplied with an input signal and electrically isolated from an output electrical connection. A bar magnet is pivotally mounted on a pedicel between the input electrical connection and the output electrical connection. A pair of coils disposed on opposite sides of the bar magnet and each being supplied with an electronic signal from a sensor, the bar magnet being responsive to an electromagnetic filed generated by the pair of coils to cause the bar magnet to contact the input electrical connection and the output electrical connection and complete a circuit and send out a control signal.
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公开(公告)号：US20210319921A1
公开(公告)日：2021-10-14
申请号：US17163511
申请日：2021-01-31
摘要： Damper systems selectively reduce coolant fluid flow in nuclear reactor passive cooling systems, including related RVACS. Systems include a damper that blocks the flow in a coolant conduit and is moveable to open, closed, and intermediate positions. The damper blocks the coolant flow when closed to prevent heat loss, vibration, and development of large temperature gradients, and the damper passively opens, to allow full coolant flow, at failure and in transient scenarios. The damper may be moveable by an attachment extending into the coolant channel that holds the damper in a closed position. When a transient occurs, the resulting loss of power and/or overheat causes the attachment to stop holding the damper, which may be driven by gravity, pressure, a spring, or other passive structure into the open position for full coolant flow. A power source and temperature-dependent switch may detect and stop holding the damper closed in such scenarios.
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公开(公告)号：US20190203614A1
公开(公告)日：2019-07-04
申请号：US15857532
申请日：2017-12-28
发明人： Eric P. Loewen , Scott E. Rasmussen
摘要： 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.
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公开(公告)号：US20180277267A1
公开(公告)日：2018-09-27
申请号：US15469735
申请日：2017-03-27
发明人： Eric P. Loewen , James P. Sineath , Dean D. Molinaro , William C. Dawn , William J. Garcia , Oscar L. Meek , Patrick K. Day
IPC分类号： G21C17/032 , G21C17/10 , G21C13/02
CPC分类号： G21C17/032 , G01F1/3263 , G01F1/66 , G21C13/02 , G21C17/10
摘要： Vibration-based flowmeters are useable in inaccessible nuclear reactor spaces. Flowmeters include an extension that blocks fluid flow in a path and a detector that detects vibrations caused by vortex shedding in the fluid flow around the extension. The detected frequency of the vibrations determines the flow rate. A Strouhal number may be used to calculate the flow speed using extension surface diameter and detected vortex shedding frequency. Several extensions may cover a range of frequencies and flow speeds. Pipe-organ-type flowmeters include a passage with an opening constricted, and subsequent widening section. An extension and outlet that create turbulence in the flow at the outlet create a standing wave and vibration in the extension and/or entire flowmeter. A flow rate of the fluid through the flowmeter can be calculated using length of the passage and/or known properties of the fluid. Multiple, flowmeters of customized physical properties and types are useable together.
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公开(公告)号：US11828204B2
公开(公告)日：2023-11-28
申请号：US18072592
申请日：2022-11-30
发明人： Eric P. Loewen , Scott E. Rasmussen
IPC分类号： F01K7/38 , G21D5/16 , F22B1/02 , F01K19/00 , F01K7/34 , F01K7/44 , F01K11/02 , G21D5/12 , G21D1/00
CPC分类号： F01K7/38 , F01K7/345 , F01K7/44 , F01K11/02 , F01K19/00 , F22B1/023 , G21D1/006 , G21D5/12 , G21D5/16
摘要： Steam generators in power plants exchange energy from a primary medium to a secondary medium for energy extraction. Steam generators include 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.
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公开(公告)号：US10770191B2
公开(公告)日：2020-09-08
申请号：US14266302
申请日：2014-04-30
IPC分类号： B08B3/04 , G21C15/25 , B08B3/14 , G21C19/307 , G21C17/013 , G21F9/04 , G21F9/12 , G21C17/022 , G21F9/00 , G21C19/20
摘要： Mobile apparatuses move within contaminated fluid to create fluid flows against structures that remove and prevent contaminant deposition on structure surfaces immersed in the fluid. Unsettling flows in water may exceed approximately 2 m/s for radionuclide particles and solutes found in nuclear power plants. Mobile apparatuses include pressurized liquid from a pump or pressurized source that can be chemically and thermally treated to maximize deposition removal. When spraying the pressurized liquid to create the deposition-removing flow, mobile apparatuses may be self-propelled within the fluid about an entire surface to be cleaned. Mobile apparatuses include filters keyed to remove the contaminants moved into the coolant by the flow, and by taking in ambient fluid, enable such filtering of the ambient fluid along with a larger flow volume and propulsion. Propulsion and the pressurized liquid in turn enhance intake of ambient fluid.
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公开(公告)号：US10706972B2
公开(公告)日：2020-07-07
申请号：US15437149
申请日：2017-02-20
摘要： In one embodiment, the fuel bundle for a liquid metal cooled reactor includes a channel, a nose assembly secured to a lower end of the channel, and a plurality of fuel rods disposed within the channel. At least one of the fuel rods has at least one guard ring surround the fuel rod and spacing the fuel rod from adjacent fuel rods.
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公开(公告)号：US12062459B2
公开(公告)日：2024-08-13
申请号：US16793089
申请日：2020-02-18
发明人： Eric P. Loewen , James P. Sineath , Dean D. Molinaro , William C. Dawn , Robin D. Sprague , Theron D. Marshall , Joel P. Melito
摘要： Nozzles mix coolant from different sources together in an outlet to prevent differences in coolant output. Different flow path configurations are useable in the nozzle, including a multiple-path configuration with flows from different sources jacketed or concentrically arranged around flows from other sources. Swirl vanes may be installed in the nozzle to impart mixing or filtering the fluid flow. Diffusers may be used to passively suction or accelerate flow and mixing the same like a jet pump. Nozzles can be combined with filtration systems like trap filters that capture debris based on a momentum difference between the denser debris and fluid. Filters can use magnetic, adhesive, or porous materials to capture debris without blocking a flow path. Filters can be disengaged, such as when clogged, such that coolant flows around the system. Nozzles can be installed on feedwater sparger assemblies in varying manner to distribute coolant from multiple nozzles.
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公开(公告)号：US11380450B2
公开(公告)日：2022-07-05
申请号：US17163511
申请日：2021-01-31
摘要： Damper systems selectively reduce coolant fluid flow in nuclear reactor passive cooling systems, including related RVACS. Systems include a damper that blocks the flow in a coolant conduit and is moveable to open, closed, and intermediate positions. The damper blocks the coolant flow when closed to prevent heat loss, vibration, and development of large temperature gradients, and the damper passively opens, to allow full coolant flow, at failure and in transient scenarios. The damper may be moveable by an attachment extending into the coolant channel that holds the damper in a closed position. When a transient occurs, the resulting loss of power and/or overheat causes the attachment to stop holding the damper, which may be driven by gravity, pressure, a spring, or other passive structure into the open position for full coolant flow. A power source and temperature-dependent switch may detect and stop holding the damper closed in such scenarios.
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公开(公告)号：US11107594B2
公开(公告)日：2021-08-31
申请号：US16176407
申请日：2018-10-31
摘要： An electro-technical device includes a first housing portion electrically isolated from a second housing portion with a point source being disposed within the first housing portion. A movable conductor is connected to the first portion and is responsive to an electric field generated by the point source to cause the movable conductor to contact the second housing portion to complete a circuit and send out a control signal.
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