专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

81. 发明授权

US3883623A Process for controlling end-point density of sintered uranium dioxide nuclear fuel bodies and product 失效
标题翻译：烧结二氧化铀核燃料体和产品端点密度的控制方法
公开(公告)号：US3883623A
公开(公告)日：1975-05-13
申请号：US29825572
申请日：1972-10-17
申请人： GEN ELECTRIC
发明人： LAY KENNETH W
IPC分类号： C04B35/51 , C01G43/025 , G21C3/62 , G21C21/00
CPC分类号： G21C3/623 , C01G43/025 , C01P2004/03 , C01P2004/50 , C01P2004/61 , C01P2004/62 , C01P2006/10 , Y02E30/38 , Y10S376/901
摘要： A process for controlling the end-point density of a sintered uranium dioxide nuclear fuel body and the resulting product. Uranium dioxide powder having a size ranging up to 10 microns is admixed with a precursor to uranium dioxide, such as ammonium diuranate, having an average agglomerated particle size ranging from about 20 microns to 1 millimeter and the mixture is formed into a pressed compact or green body. The precursor to uranium dioxide has a density lower than that of the uranium dioxide powder and is used in an amount which results in discrete low density regions in the green body which range from about 5% to 25% by volume of the green body. The green body is sintered to decompose the precursor and produce a sintered body having discrete low density porous regions which reduce the end-point density of the sintered body by at least 2%. The sintered body has an end-point density ranging from 85% to 95% of theoretical.
摘要翻译：一种控制烧结二氧化铀核燃料体和终产物的终点密度的方法。具有至多10微米尺寸的二氧化铀粉末与二氧化铀前体混合，其中二氧化铀如二硫酸铵具有约20微米至1毫米的平均聚集粒度，并将该混合物形成压制成型或绿色身体。二氧化铀的前体的密度低于二氧化铀粉末的密度，其用量可以使绿色体中离散的低密度区域在生坯体积的约5％至25％的范围内。生坯体被烧结以分解前体并产生具有离散的低密度多孔区域的烧结体，其将烧结体的终点密度降低至少2％。该烧结体的终点密度在理论值的85％至95％之间。

82. 发明授权

US3668283A Process for the fabrication of nuclear fuel elements 失效
标题翻译：制造核燃料元素的过程
公开(公告)号：US3668283A
公开(公告)日：1972-06-06
申请号：US3668283D
申请日：1969-09-11
申请人： COMMISSARIAT ENERGIE ATOMIQUE
发明人： MOREAU CLAUDE
IPC分类号： G21C3/62 , G21C21/02 , G21C21/00
CPC分类号： G21C21/02
摘要： A method of fabrication of nuclear fuel elements having high impermeability to fission gases and made up of refractory fuel particles dispersed in a carbonaceous matrix, said fuel particles being coated with a mixture of graphite and an organic diluent by means of a pelletizing process. An outer jacket for containing the coated particles is fabricated by shaping a paste formed of graphite powder and a binder, then baking and impregnating the jacket with pyrocarbon in a single operation by heating to a temperature between 850* and 1,100* C. in a gaseous hydrocarbon atmosphere.
摘要翻译：一种制造对裂变气体具有高不渗透性并由分散在碳质基质中的耐火燃料颗粒构成的核燃料元件的方法，所述燃料颗粒通过造粒方法用石墨和有机稀释剂的混合物涂覆。通过成形由石墨粉末和粘合剂形成的糊料，然后在一个操作中通过加热至850℃至1100℃之间的温度在一个操作中烘烤和浸渍该夹套来制造用于容纳涂覆颗粒的外护套碳氢化合物气氛。

83. 发明授权

US3617585A Method for preparing oxide gel microspheres from sols 失效
标题翻译：从溶胶中制备氧化硅凝胶微球的方法
公开(公告)号：US3617585A
公开(公告)日：1971-11-02
申请号：US3617585D
申请日：1969-09-23
申请人： HAAS PAUL A , SAM D CLINTON
发明人： HAAS PAUL A , CLINTON SAM D
IPC分类号： B01J2/06 , G21C3/62 , G21C21/00
CPC分类号： B01J2/06 , G21C3/623 , Y02E30/38
摘要： A process for the production of gel microspheres characterized by a mean sphere diameter in the range of about 5 to 300 microns and a comparatively small proportion of spheres with diameters much smaller than the mean sphere diameter. A fine stream of a hydrous sol is introduced to a dehydrating stream of organic liquid through a capillary extending into the organic stream at an angle thereto. The flow rate of the organic stream is maintained at a value establishing a selected agitated flow condition at tee capillary outlet, thereby producing a sol drop dispersion yielding gel microspheres of the character desired.

84. 发明授权

US3617342A Nuclear reactor fuel elements 失效
公开(公告)号：US3617342A
公开(公告)日：1971-11-02
申请号：US3617342D
申请日：1968-03-15
申请人： ATOMIC ENERGY AUTHORITY UK
发明人： SHENNAN JOHN VINCENT , FORD LIONEL HOUSTON
IPC分类号： G21C3/62 , G21C21/00
CPC分类号： G21C3/626 , Y02E30/38
摘要： A method of producing coated particles of uranium dicarbide wherein a layer of pyrolytic carbon is deposited on uranium carbide particles of composition from UC1.0 to UC1.6 at a temperature (e.g., 1000* C. to 1400* C.) such that little reaction occurs between the particles and the applied carbon coating followed by application of an outer coating of high density fission product retaining material on the carbon coated particles at a temperature (e.g., above 1450* C.) such that reaction takes place between the initial coating of pyrolytic carbon and the uranium carbide particles to form uranium dicarbide (UC1.85). A gap is produced between the particles and the coating on the particles.

85. 发明授权

US3488409A Process for consolidating nuclear fuel particles 失效
标题翻译：合并核燃料颗粒的方法
公开(公告)号：US3488409A
公开(公告)日：1970-01-06
申请号：US3488409D
申请日：1967-11-08
申请人： ATOMIC ENERGY COMMISSION
发明人： BEUTLER HANS , HAMNER ROBERT L , ROBBINS J M
IPC分类号： G21C3/62 , G21C21/00 , G21C3/02
CPC分类号： G21C3/626 , Y02E30/38

86. 发明申请

US20230122914A1 METHODS OF MANUFACTURING STRUCTURES FROM COATED METAL GRAIN MATERIALS, SUCH AS FOR USE IN NUCLEAR REACTOR SYSTEMS, AND RELATED STRUCTURES AND SYSTEMS 有权
公开(公告)号：US20230122914A1
公开(公告)日：2023-04-20
申请号：US17966090
申请日：2022-10-14
申请人： NuScale Power, LLC
发明人： Frederick Botha
IPC分类号： B22F3/15 , G21C21/00 , B22F1/14 , C23C16/40 , C23C16/455
摘要： Methods of fabricating structures, such as parts for use in nuclear power generation systems, are described herein. A representative method of fabricating a part for a nuclear reactor system includes coating a plurality of particles of a powder of a first material with a second material, and then pressing and/or heating the coated powder into a monolithic structure. The second material can be substantially solidly insoluble with the first material such that, after pressing and/or heating, the particles of the first material define grains of the monolithic structure and the second material substantially encapsulates the grains in the monolithic structure. The first material can be susceptible to corrosion by a select process, and the second material can be resistant to corrosion by the select process such that the bulk first material of the monolithic structure is resistant to corrosion by the select process.

87. 发明授权

US11079054B2 Cross-over fluid coupling 有权
公开(公告)号：US11079054B2
公开(公告)日：2021-08-03
申请号：US15735374
申请日：2016-06-22
申请人： ATOMIC ENERGY OF CANADA LIMITED
发明人： James M. King , Andrew B. Kittmer , Terry J. Schaubel
IPC分类号： F16L39/00 , F16L9/19 , F28F9/26 , F28D7/10 , F28F13/06 , G21C3/322 , G21C15/02 , G21C3/328 , G21C1/20 , G21C21/00
摘要： A cross-over fluid coupling includes a first coupling end and a second coupling end. A plurality of first conduits have inner ends disposed toward the first coupling end and outer ends spaced apart from the inner end toward the second coupling end and being outboard of the inner end. A plurality of second conduits have outer ends that are disposed toward the first coupling end and positioned laterally outboard of the inner end of at least one of the first conduits, and inner ends that are spaced apart from the outer end toward the second coupling end in the axial direction and is laterally inboard of the outer end of the at least one of the first conduits.

88. 发明申请

US20210110944A1 Modular Integrated Gas High Temperature Nuclear Reactor 有权
公开(公告)号：US20210110944A1
公开(公告)日：2021-04-15
申请号：US17067425
申请日：2020-10-09
申请人： MIGHTR LLC
发明人： Enrique VELEZ LOPEZ , William Robb STEWART
IPC分类号： G21C15/253 , G21C1/08 , G21C11/02 , G21C11/08 , G21C13/00 , G21C21/00 , G21C13/10 , G21C13/028
摘要： The present disclosure is directed to systems and methods useful for the construction and operation of a Modular Integrated Gas High-Temperature Reactor (MIGHTR). The MIGHTR includes a reactor core assembly disposed at least partially within a core baffle within a first high-pressure shell portion, a thermal transfer assembly disposed at least partially within a flow separation barrel within a second high-pressure shell portion. The longitudinal axes of the first high-pressure shell portion and the second high-pressure shell portion may be collinear. The reactor core assembly may be accessed horizontally for service, maintenance, and refueling. The core baffle may be flexibly displaceably coupled to the flow separation barrel. Coolant gas flows through the reactor core assembly and into the thermal transfer assembly where the temperature of the coolant gas is reduced. A plurality of coolant gas circulators circulate the cooled coolant gas from the thermal transfer assembly to the reactor core assembly.

89. 发明申请

US20200373024A1 MOLTEN METAL FUEL BUFFER IN FISSION REACTOR AND METHOD OF MANUFACTURE 审中-公开
公开(公告)号：US20200373024A1
公开(公告)日：2020-11-26
申请号：US16851142
申请日：2020-04-17
申请人： BWXT Advanced Technologies LLC
发明人： Craig D. GRAMLICH
IPC分类号： G21C3/22 , G21C21/00
摘要： Fission reactor has a cladding encasing a heat generating source including a fissionable nuclear fuel composition. The heat generating source is offset from the surface of the cladding and molten metal is located within the void space formed by the offset. As a liquid, the molten metal will flow and occupy any contiguous network of void space within the fuel cavity and provides thermal transfer contact between the heat generating source and the cladding. The cladding separates the heat generating source and the molten metal from the primary coolant volume.

90. 发明授权

US10376942B2 Water jet peening device 有权
公开(公告)号：US10376942B2
公开(公告)日：2019-08-13
申请号：US15121262
申请日：2015-01-16
申请人： MITSUBISHI HEAVY INDUSTRIES, LTD.
发明人： Takaharu Maeguchi , Yuichiro Nomura , Kazuya Tsutsumi , Nobuyuki Hori
IPC分类号： C21D7/06 , B21D31/06 , G21C21/00 , C21D9/08 , G21C17/003 , C21D7/04 , C21D9/50
摘要： A water jet peening device includes a sealed vessel provided to cover a surface of a welded portion, and adapted to be in a sealed state where an internal pressure is higher than an outside, a jet nozzle adapted to jet high-pressure water to create a cavitation bubble toward the surface of the welded portion, inside the sealed vessel, and a pressure control hole adapted to be able to adjust the internal pressure of the sealed vessel. The water jet peening device can efficiently reform a tensile residual stress on the surface of the welded portion to a compressive residual stress.

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式