Patents by Inventor Viktor Nikolaevich LEONOV
Viktor Nikolaevich LEONOV has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 11610692Abstract: A fast-neutron nuclear reactor fuel assembly having fuel rods. Each fuel rod has nuclear fuel disposed in a sealed housing in the form of a tubular steel shell and end parts. A steel spacer element is wound in a coil with a specific pitch on the outside surface of the shell and is fastened on the end parts. The spacer element is in the form of a metallic band twisted around its longitudinal axis. The width of said band is approximately equal to the minimum distance between adjacent fuel rods in the fuel assembly. A transverse cross-sectional area of the band is within a range from 0.10 to 0.50 times the area of a circle described around the width of the band.Type: GrantFiled: September 1, 2017Date of Patent: March 21, 2023Assignee: STATE ATOMIC ENERGY CORPORATION “ROSATOM” ON BEHALF OF THE RUSSIAN FEDERATIONInventors: Nikita Gennadevich Chernetsov, Viktor Nikolaevich Leonov, Aleksey Borisovich Shevchenko, Elena Aleksandrovna Rodina, Yuriy Vasilevich Chernobrovkin
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Publication number: 20210012912Abstract: The application relates to nuclear technology for preparing fuel rods and fuel assemblies for the cores of fast-neutron reactors utilizing a liquid-metal coolant to reduce the amount of metal consumed per fuel rod. A fast-neutron reactor fuel rod having nuclear fuel disposed is in a sealed housing having a thin-walled tubular steel shell. A spacer element is wound in a coil with a large pitch on the outside surface of the shell and fastened to ends of the fuel rod on an end part of the housing. The spacer element is in the form of a metallic band twisted around its longitudinal axis, the width of the band being approximately equal to the minimum distance between adjacent fuel rods in a fuel assembly of the nuclear reactor, the cross-sectional area of the band within a range from 0.1 to 0.5 times the area of a circle described around the section.Type: ApplicationFiled: September 1, 2017Publication date: January 14, 2021Applicant: STATE ATOMIC ENERGY CORPORATION "ROSATOM" ON BEHALF OF THE RUSSIAN FEDERATIONInventors: Nikita Gennadevich CHERNETSOV, Viktor Nikolaevich LEONOV, Aleksey Borisovich SHEVCHENKO, Elena Aleksandrovna RODINA, Yuriy Vasilevich CHERNOBROVKIN
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Patent number: 10643755Abstract: The invention relates to nuclear reactor protection systems and can be used when building nuclear reactors, in particular, the fast neutron reactors. The Technical result of the invention consists in the expansion of 5 functional capabilities of the negative reactivity passive insertion device by securing its reliable actuation in various emergency conditions. The device has two vessels located in a common enclosure one under another with a ring-shape hollow space between the vessels and the enclosure to let the heat carrier flow. Fuel elements are located in the ring-shape hollow space, as well as the tooling for the heat carrier flow formation to cool the fuel elements and heat the upper vessel. The upper vessel is located above the reactor core and is divided with an internal partition wall to the central cylindrical and ring-shape hollow spaces. The partition wall has low thermal conductivity in the transverse direction.Type: GrantFiled: April 5, 2016Date of Patent: May 5, 2020Assignee: STATE ATOMIC ENERGY CORPORATION “ROSATOM” ON BEHALF OF THE RUSSIAN FEDERATIONInventors: Igor Sergeevich Slesarev, Viktor Nikolaevich Leonov, Boris Borisovich Kubintsev, Elena Aleksandrovna Rodina, Yuriy Vasilevich Chernobrovkin, Aleksey Borisovich Shevchenko
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Publication number: 20180174693Abstract: The invention relates to nuclear reactor protection systems and can be used when building nuclear reactors, in particular, the fast neutron reactors. The Technical result of the invention consists in the expansion of 5 functional capabilities of the negative reactivity passive insertion device by securing its reliable actuation in various emergency conditions. The device has two vessels located in a common enclosure one under another with a ring-shape hollow space between the vessels and the enclosure to let the heat carrier flow. Fuel elements are located in the ring-shape hollow space, as well as the tooling for the heat carrier flow formation to cool the fuel elements and heat the upper vessel. The upper vessel is located above the reactor core and is divided with an internal partition wall to the central cylindrical and ring-shape hollow spaces. The partition wall has low thermal conductivity in the transverse direction.Type: ApplicationFiled: April 5, 2016Publication date: June 21, 2018Inventors: Igor Sergeevich SLESAREV, Viktor Nikolaevich LEONOV, Boris Borisovich KUBINTSEV, Elena Aleksandrovna RODINA, Yuriy Vasilevich CHERNOBROVKIN, Aleksey Borisovich SHEVCHENKO
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Patent number: 9715948Abstract: Steam generators are in the form of tubular heat exchangers in which molten lead coolant flows within the pipes, while the water-steam flows in a space between the pipes, the steam generators are arranged in separate boxes and communicate with the reactor cavity by means of circulation conduits for raising and discharging the lead coolant, the steam generators and most of the circulation conduits and are arranged higher than the level of the lead coolant within the reactor cavity, and the circulation pumps are arranged within the reactor cavity on the circulation conduits and for raising the “hot” lead coolant, and a technical means is provided for ensuring natural circulation of the lead coolant through the reactor core when the circulation pumps are switched off. The specific volume of lead coolant per unit of power of the reactor is reduced and the safety of the reactor is increased.Type: GrantFiled: November 27, 2014Date of Patent: July 25, 2017Assignee: State Atomic Energy Corporation “Rosatom” on behalf of The Russian FederationInventors: Boris Borisovich Kubintsev, Viktor Nikolaevich Leonov, Aleksandr Viktorovich Lopatkin, Yuriy Vasilievich Chernobrovkin
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Patent number: 9685244Abstract: An active zone includes a homogeneous uranium-plutonium nitride fuel, the mass fraction of which is a minimum 0.305, and consists of central, intermediate and peripheral parts which form fuel assemblies comprising fuel elements with geometrically identical shells but differing heights. The radial distribution of the fuel across the volume of the active zone has a stepped shape. The radius of the central part is from 0.4 to 0.5 of the effective active zone radius, while the height of the fuel column in the fuel elements in the central part is from 0.5 to 0.8 of the height of the fuel column in the peripheral part. The heights of the fuel columns forming a stepped intermediate part for diameters ranging from 0.5 to 0.85 of the effective active zone diameter are within the range from 0.55 to 0.9 of the height of the fuel column in the peripheral part.Type: GrantFiled: November 27, 2014Date of Patent: June 20, 2017Assignee: STATE ATOMIC ENERGY CORPORATION “ROSATOM” ON BEHALF OF THE RUSSIAN FEDERATIONInventors: Viktor Nikolaevich Leonov, Aleksandr Viktorovich Lopatkin, Elena Aleksandrovna Rodina, Yuriy Vasilievich Chernobrovkin
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Publication number: 20160351278Abstract: An active zone includes a homogeneous uranium-plutonium nitride fuel, the mass fraction of which is a minimum 0.305, and consists of central, intermediate and peripheral parts which form fuel assemblies comprising fuel elements with geometrically identical shells but differing heights. The radial distribution of the fuel across the volume of the active zone has a stepped shape. The radius of the central part is from 0.4 to 0.5 of the effective active zone radius, while the height of the fuel column in the fuel elements in the central part is from 0.5 to 0.8 of the height of the fuel column in the peripheral part. The heights of the fuel columns forming a stepped intermediate part for diameters ranging from 0.5 to 0.85 of the effective active zone diameter are within the range from 0.55 to 0.9 of the height of the fuel column in the peripheral part.Type: ApplicationFiled: November 27, 2014Publication date: December 1, 2016Applicant: STATE ATOMIC ENERGY CORPORATION "ROSATOM" ON BEHALF OF THE RUSSIAN FEDERATIONInventors: Viktor Nikolaevich LEONOV, Aleksandr Viktorovich LOPATKIN, Elena Aleksandrovna RODINA, Yuriy Vasilievich CHERNOBROVKIN
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Publication number: 20160336082Abstract: Steam generators are in the form of tubular heat exchangers in which molten lead coolant flows within the pipes, while the water-steam flows in a space between the pipes, the steam generators are arranged in separate boxes and communicate with the reactor cavity by means of circulation conduits for raising and discharging the lead coolant, the steam generators and most of the circulation conduits and are arranged higher than the level of the lead coolant within the reactor cavity, and the circulation pumps are arranged within the reactor cavity on the circulation conduits and for raising the “hot” lead coolant, and a technical means is provided for ensuring natural circulation of the lead coolant through the reactor core when the circulation pumps are switched off. The specific volume of lead coolant per unit of power of the reactor is reduced and the safety of the reactor is increased.Type: ApplicationFiled: November 27, 2014Publication date: November 17, 2016Applicant: STATE ATOMIC ENERGY CORPORATION "ROSATOM" ON BEHALF OF THE RUSSIAN FEDERATIONInventors: Boris Borisovich KUBINTSEV, Viktor Nikolaevich LEONOV, Aleksandr Viktorovich LOPATKIN, Yuriy Vasilievich CHERNOBROVKIN