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公开(公告)号：US12130009B2
公开(公告)日：2024-10-29
申请号：US16934822
申请日：2020-07-21
申请人： BWXT Canada Ltd.
发明人： Kareem M. A. Aly
摘要： A steam generator includes a shroud and an annular stepwise helical baffle extending along at least part of a length of the shroud. There is a riser located in a central region of the steam generator. The helical baffle is made up of at least one annular sector of flat plates. The edges of the flat plates may be straight or corrugated.
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公开(公告)号：US20230230716A1
公开(公告)日：2023-07-20
申请号：US18080822
申请日：2022-12-14
发明人： Daiki NUNOKAWA , Ko AKATSU
CPC分类号： G21D5/06 , F22B37/002 , F01K7/16
摘要： A nuclear power plant includes: a nuclear reactor; a steam turbine that is driven by main steam that has been generated by the nuclear reactor; and a gland steam supply device that supplies gland steam to a gland of the steam turbine. The gland steam supply device includes a gland steam generator that heats external water, and generates the gland steam. The external water is independent of the main steam and condensate of the main steam.
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公开(公告)号：US11569001B2
公开(公告)日：2023-01-31
申请号：US17095834
申请日：2020-11-12
申请人： Holtec International
摘要： A neutron absorbing insert for use in a fuel rack. In one aspect, the insert includes: a plate structure having a first wall and a second wall that is non-coplanar to the first wall; the first and second walls being formed by a single panel of a metal matrix composite having neutron absorbing particulate reinforcement that is bent into the non-coplanar arrangement along a crease; and a plurality of spaced-apart holes formed into the single panel along the crease prior to bending.
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公开(公告)号：US20210222870A1
公开(公告)日：2021-07-22
申请号：US16968109
申请日：2019-09-30
申请人： Jianhan ZOU
发明人： Jianhan ZOU , Guoyun TANG , Hehai LIU
摘要： A device with a steam generation function comprises a water storage cavity, a heating cavity with a steam outlet, a guide channel for communicating the water storage cavity with the heating cavity, and a heating element configured in the heating cavity, wherein the heating cavity has a first chamber and a second chamber communicated with the first chamber, and the first chamber is located on one side of the second chamber; and the heating element is configured in the first chamber, and the steam outlet is formed in the second chamber and is spaced from the first chamber in the horizontal direction by a preset first distance to prevent boiling water in the first chamber from being ejected via the steam outlet. The device provided by the present invention is safe in use.
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公开(公告)号：US10974326B2
公开(公告)日：2021-04-13
申请号：US16345720
申请日：2017-11-07
发明人： Fritz Ziegelmeyer
摘要： The present disclosure relates to a drilling instrument for machining tubes in tube sheets of heat exchangers in a radioactive environment, comprising a transport device having clamping elements and having a drilling device with clamping fingers, which are arranged in each case on a common first side. The transport device and the drilling device are connected to a support device having a support plate on which a resting plate of the drilling device rests. In addition, the support plate is connected to the resting plate by way of at least one movable connecting element, and the resting plate is connected to the support plate in a play-free manner in a first position of the connecting element, wherein the resting plate exhibits predefinable play with regard to the carrier plate in a second position of the connecting element.
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公开(公告)号：US10753601B2
公开(公告)日：2020-08-25
申请号：US16078658
申请日：2017-02-21
申请人： In Dug Moon
发明人： In Dug Moon , Sun Jae Moon
IPC分类号： G21C5/10 , F22B37/24 , G21D1/00 , G21C13/024 , F22B37/02 , G21C15/253 , F22B37/00
摘要： An apparatus for cooling a substructure of a steam generator in a nuclear reactor is provided. The apparatus includes a plurality of stud bolts (110) fastening a skirt of the steam generator to a sliding base. Each stud bolt is provided at the center thereof with an axial through hole (112), a flange of the skirt is provided on one side thereof with a vent passage (122), and each stud bolt is provided with at least one vent hole (114) communicating with the axial through hole (112), thereby forming an air circulation/cooling path between the vent passage (122) and the axial through hole (112) via the vent hole (114).
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公开(公告)号：US20200234835A1
公开(公告)日：2020-07-23
申请号：US16743414
申请日：2020-01-15
发明人： Jonghyuk LEE , Kyungdoo KIM , Kwiseok HA , Sungwon BAE , Seungwook LEE , Chiwoong CHOI , Jaeseok HEO
摘要： A coolant recirculation system of a nuclear power plant is provided that may include: a reactor vessel configured to accommodate a reactor core and a reactor coolant therein; a steam generator configured to transfer a gas, converted from a liquid phase to a gaseous phase by exchanging heat with the reactor coolant, to a turbine system; a pressurizer configured to control pressure of the reactor coolant in the reactor vessel; a primary system pressure reducing valve located above the pressurizer and configured to open at a predetermined pressure to discharge the reactor coolant into a containment building for rapid depressurization; and a moisture separator connected to the primary system pressure reducing valve to separate moisture. The moisture separator may separate the reactor coolant into a gaseous phase and a liquid phase. Then, the liquid phase reactor coolant may be returned to the reactor vessel to be recirculated.
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公开(公告)号：US20200032995A1
公开(公告)日：2020-01-30
申请号：US16047851
申请日：2018-07-27
申请人： Cleaver-Brooks, Inc.
摘要： A modular heat recovery steam generator (mHRSG) comprises a first boiler module comprising a plurality of pipes having at least one pipe with a flanged end; a first piping deck comprising a plurality of pipes having at least one pipe with a flanged end, wherein the pipe with the flanged end is secured to the pipe with the flanged end of the first boiler module using bolts; a second boiler module comprising a plurality of pipes having at least one pipe with a flanged end; a second piping deck comprising a plurality of pipes having at least one pipe with a flanged end, wherein the pipe with the flanged end is secured to the pipe with the flanged end of the second boiler module using bolts; and a main stack. The first boiler module is operatively coupled to the second boiler module and the second boiler module is operatively coupled to the main stack.
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公开(公告)号：US10518411B2
公开(公告)日：2019-12-31
申请号：US15473384
申请日：2017-03-29
IPC分类号： B25J9/16 , F01D5/00 , G05B19/4065 , G05B19/048 , G05B19/4097 , F22B37/00 , G05D1/00 , G06Q10/08 , G05B19/042 , G05D1/10
摘要： A method includes receiving, via at least one sensor of a robot, sensor data indicating one or more characteristics of an asset. The method includes detecting, based on the sensor data, an existing or imminent defect of the asset. The method includes fabricating a part suitable for use in correcting the defect. The structure of the part is derived using one or both of a digital representation of the asset generated using the sensor data or stored reference data related to the asset.
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公开(公告)号：US20190301735A1
公开(公告)日：2019-10-03
申请号：US16316215
申请日：2017-01-13
申请人： Arvos Ljungstrom LLC
发明人： Kevin O'Boyle , Glenn D. Mattison
IPC分类号： F23J15/02 , B01D53/50 , F23J15/00 , B01D53/30 , F23J15/06 , F22B37/02 , F22B37/00 , F23J15/08
摘要： A method for improving effectiveness of a steam generator system includes providing air to an air preheater at a mass flow such that the air preheater has a cold end outlet temperature defined by the improved air preheater operating with increased heat recovery (HR) of at least 1% calculated according to the equation: HR=100%×((Tgi−TgoAdvX)/(Tgi−TgoSTD)−1). The method requires either reducing the amount of heat that flows into the air preheater from the flue gas and/or increasing the amount of heat extracted from the flue gas. The method includes mitigating SO3 in the flue gas which is discharged directly from the air preheater to a particulate removal system and then directly into a flue gas desulfurization system. The method includes extracting heat from the Flue gas to create equipment preheat and/or flue gas stack reheat air with the latter being fed to heat the flue gas prior to entering a discharge stack to raise the temperature of the flue gas to mitigate visible plume exiting and to mitigate corrosion in, the discharge stack.
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