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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：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：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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公开(公告)号：US11037426B2
公开(公告)日：2021-06-15
申请号：US15452696
申请日：2017-03-07
IPC分类号： G08B21/12 , G01T7/00 , H05B47/18 , H05B47/19 , H05B47/175 , H05B47/185
摘要： Devices work as both area lighting and ionizing radiation detectors. The lighting is adjustable in response to radiation detection, warning nearby users about radiation. Multiple devices can be plugged into electrical outlets throughout a plant or building to replace conventional lighting like lightbulbs or CFLs. Each device can transmit alerts to notify nearby users and transmit data to processors for aggregation and analysis. The data can be sent wirelessly, over fiber optic cable, as power line communications or otherwise. The data can be multiplexed along a single line. The devices may be in known locations or located based on an ID in the data. This data can be used to locate radiation sources and facilitate analysis and alerting at the location. Operators may respond to the radiation detection by issuing commands to the devices to change lighting output, adjust radiation detection parameters, and take corrective or ameliorative action in the facility.
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公开(公告)号：US10755825B2
公开(公告)日：2020-08-25
申请号：US16176716
申请日：2018-10-31
摘要： An electro-technical device includes a first coil connected to a first sensor for receiving a current therefrom representative of a sensed condition, the first coil being anchored at first and second ends. A second coil is connected to a second sensor for receiving a current therefrom representative of a sensed condition, the second coil being anchored at first and second ends and being adjacent to the first coil. When the first and second coils receive an increased current from the first and second sensors, the first and second coils each create a magnetic flux that repel one another in order to cause at least one of the coils to break so that a shutdown signal can be sent.
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