Patents by Inventor Nobuki Uda
Nobuki Uda 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).
-
Publication number: 20230026097Abstract: Metals are smelted properly. An electrolytic smelting furnace includes a furnace body, a furnace bottom electrode provided at a bottom part in the furnace body, and an upper electrode provided above the furnace bottom electrode in the furnace body, and the upper electrode includes a conductive compound with a spinel-type structure.Type: ApplicationFiled: August 5, 2020Publication date: January 26, 2023Inventors: Takashi NAKANO, Ikumasa KOSHIRO, Yuki ASAI, Nobuki UDA
-
Patent number: 8908822Abstract: In a nuclear reactor, a core barrel (46) is disposed in a reactor vessel (41) having an inlet nozzle (44) and an outlet nozzle (45), a core (53) is disposed in the core barrel (46), a lower plenum (58) is partitioned by the reactor vessel (41) and a bottom portion of the core barrel (46), and a downcomer portion (59) is partitioned by the reactor vessel (41) and a side wall of the core barrel (46). The lower plenum (58) includes a straightening member (61) formed of an upper ring (65) and a lower ring (69) in a ring shape, and a plurality of spokes (64 and 68) radially arranged inside the rings (65 and 69), respectively. Heat exchange efficiency is enhanced by uniformly supplying coolant introduced into a pressure vessel to the core from the lower plenum in a radial direction and a circumferential direction.Type: GrantFiled: August 27, 2008Date of Patent: December 9, 2014Assignee: Mitsubishi Heavy Industries, Ltd.Inventors: Nobuki Uda, Shigeyuki Watanabe
-
Patent number: 8903032Abstract: An upper hole 37A and a lower hole 37B are provided at two positions, namely, upper and lower portions, of a side surface of a guide tube 27, and a thimble tube 22 is pressed against an inner circumferential surface of the guide tube 27, by a differential pressure between coolant inside and outside the upper hole 37A and the lower hole 37B.Type: GrantFiled: February 22, 2008Date of Patent: December 2, 2014Assignee: Mitsubishi Heavy Industries, Ltd.Inventors: Nobuki Uda, Shigeyuki Watanabe, Kazuo Hirota, Hideyuki Sakata, Hideyuki Morita, Makoto Nakajima, Chikara Kurimura, Toshio Ichikawa
-
Patent number: 8711998Abstract: In a cooling structure and a cooling method for a control rod drive mechanism and in a nuclear reactor, a housing (59) in which magnetic jacks are housed is fixed to an upper portion of a reactor vessel (41), and an air intake unit (102) that takes cooling air into the housing (59), a first exhaust duct (104) that is arranged side by side with the air intake unit (102) in a circumferential direction of the housing (59), into which cooling air in the housing (59) is suctioned through a first inlet (109) at a lower portion thereof, and that guides the cooling air upward, a second exhaust duct (105) that is disposed below the air intake unit (102), into which cooling air in the housing (59) is suctioned through a second inlet (110), and that guides the cooling air to the first exhaust duct (104), and a discharging unit (111) that is formed at an upper portion of the housing (59) and discharges cooling air in the first exhaust duct (104) to the exterior are provided.Type: GrantFiled: February 20, 2009Date of Patent: April 29, 2014Assignee: Mitsubishi Heavy Industries, Ltd.Inventors: Nobuki Uda, Chikara Kurimura
-
Publication number: 20120057668Abstract: The reactor containment structure is provided with a reactor containment vessel, a reactor containment chamber installed inside the reactor containment vessel to contain a nuclear power reactor, a pool installed inside the reactor containment vessel so as to be below the reactor containment chamber adjacently and in which an emergency cooling liquid is stored, an opening part for allowing the emergency cooling liquid to flow from the reactor containment chamber into the pool, a sump installed below the pool, a debris filtering body installed at the sump to filter debris contained in the emergency cooling liquid, a pumping system which sucks the emergency cooling liquid from the sump and discharges the emergency cooling liquid into the reactor containment chamber, and a debris trapping part installed in the pool to trap the debris, wherein the debris trapping part intersects with a flow path of the emergency cooling liquid.Type: ApplicationFiled: May 11, 2010Publication date: March 8, 2012Applicant: MITSUBISHI HEAVY INDUSTRIES, LTD.Inventors: Nobuki Uda, Hideo Fukuda, Nobuo Ishihara, Kazutoyo Murata, Hiroshi Arikawa, Kaname Shibato, Hiroshi Matsuoka
-
Publication number: 20120051486Abstract: This reactor containment structure is provided with a reactor containment vessel (10), a reactor containment chamber (11) which is provided in the reactor containment vessel (10) and contains a nuclear power reactor, a pool (12) which is provided in the reactor containment vessel (10) below the reactor containment chamber (11) adjacently and holds an emergency cooling liquid (W), a plurality of opening parts (11b, 11c) allowing the emergency cooling liquid (W) to flow from the reactor containment chamber (11) into the pool (12), a sump (13) which is provided below the pool (12), a debris filtering body (14) which is installed in the sump (13) to filter debris (D) contained in the emergency cooling liquid (W), a pumping device (20) which sucks the emergency cooling liquid (W) from the sump (13) and discharges the emergency cooling liquid (W) into the reactor containment chamber (11), and a weir (30), which is provided to at least the opening part (11b) closest to the sump (13) among the plurality of opening paType: ApplicationFiled: May 10, 2010Publication date: March 1, 2012Applicant: MITSUBISHI HEAVY INDUSTRIES, LTD.Inventors: Nobuki Uda, Hideo Fukuda, Hiroshi Matsuoka
-
Publication number: 20120051487Abstract: The reactor containment structure is provided with a reactor containment vessel (10), a reactor containment chamber (11) which is installed inside the reactor containment vessel (10) to contain a nuclear power reactor (5), a pool (12) which is installed inside the reactor containment vessel (10) so as to be below the reactor containment chamber (11) adjacently and in which an emergency cooling liquid (W) is stored, an opening part (11b) which allows the emergency cooling liquid (W) to flow into the pool (12) from the reactor containment chamber (11), a sump (13) which is installed below the pool (12), a debris filtering body (14) which is installed at the sump (13) to filter debris contained in the emergency cooling liquid (W), a pumping device (20) which sucks the emergency cooling liquid (W) from the sump (13) and discharges the emergency cooling liquid (W) into the reactor containment chamber (11) and a baffle plate (30) which guides the emergency cooling liquid (W) that flows into the pool (12) from the oType: ApplicationFiled: May 12, 2010Publication date: March 1, 2012Applicant: MITSUBISHI HEAVY INDUSTRIES, LTD.Inventors: Hideo Fukuda, Nobuki Uda, Hiroshi Matsuoka
-
Patent number: 7993426Abstract: In a moisture separator, a manifold that communicates with a steam inlet is disposed in a shell. A plurality of blowout outlets for steam is provided on a side of the manifold. A first support plate and a lower support frame are fixed to a lower part in the shell to compart a steam drift space and a drain path. A moisture separating element is provided corresponding to the manifold, and steam from which moisture is removed by the moisture separating element is heated by a group of heating tubes to flow as high-temperature reheat steam to the steam outlet. The moisture is led from the drain opening through the drain path to the drain outlet. A blocking plate blocks a part of the drain opening.Type: GrantFiled: January 10, 2007Date of Patent: August 9, 2011Assignee: Mitsubishi Heavy Industries, Ltd.Inventors: Issaku Fujita, Nobuki Uda, Jiro Kasahara
-
Publication number: 20100316178Abstract: In a cooling structure and a cooling method for a control rod drive mechanism and in a nuclear reactor, a housing (59) in which magnetic jacks are housed is fixed to an upper portion of a reactor vessel (41), and an air intake unit (102) that takes cooling air into the housing (59), a first exhaust duct (104) that is arranged side by side with the air intake unit (102) in a circumferential direction of the housing (59), into which cooling air in the housing (59) is suctioned through a first inlet (109) at a lower portion thereof, and that guides the cooling air upward, a second exhaust duct (105) that is disposed below the air intake unit (102), into which cooling air in the housing (59) is suctioned through a second inlet (110), and that guides the cooling air to the first exhaust duct (104), and a discharging unit (111) that is formed at an upper portion of the housing (59) and discharges cooling air in the first exhaust duct (104) to the exterior are provided.Type: ApplicationFiled: February 20, 2009Publication date: December 16, 2010Applicant: MITSUBISHI HEAVY INDUSTRIES, LTD.Inventors: Nobuki Uda, Chikara Kurimura
-
Publication number: 20100284507Abstract: In a nuclear reactor, a core barrel (46) is disposed in a reactor vessel (41) having an inlet nozzle (44) and an outlet nozzle (45), a core (53) is disposed in the core barrel (46), a lower plenum (58) is partitioned by the reactor vessel (41) and a bottom portion of the core barrel (46), and a downcomer portion (59) is partitioned by the reactor vessel (41) and a side wall of the core barrel (46). The lower plenum (58) includes a straightening member (61) formed of an upper ring (65) and a lower ring (69) in a ring shape, and a plurality of spokes (64 and 68) radially arranged inside the rings (65 and 69), respectively. Heat exchange efficiency is enhanced by uniformly supplying coolant introduced into a pressure vessel to the core from the lower plenum in a radial direction and a circumferential direction.Type: ApplicationFiled: August 27, 2008Publication date: November 11, 2010Applicant: MITSUBISHI HEAVY INDUSTRIES, LTD.Inventors: Nobuki Uda, Shigeyuki Watanabe
-
Publication number: 20100091929Abstract: An upper hole 37A and a lower hole 37B are provided at two positions, namely, upper and lower portions, of a side surface of a guide tube 27, and a thimble tube 22 is pressed against an inner circumferential surface of the guide tube 27, by a differential pressure between coolant inside and outside the upper hole 37A and the lower hole 37B.Type: ApplicationFiled: February 22, 2009Publication date: April 15, 2010Applicant: MITSUBISHI HEAVY INDUSTRIES, LTD.Inventors: Nobuki Uda, Shigeyuki Watanabe, Kazuo Hirota, Hideyuki Sakata, Hideyuki Morita, Makoto Nakajima, Chikara Kurimura, Toshio Ichikawa
-
Publication number: 20090288418Abstract: In a moisture separator, a manifold that communicates with a steam inlet is disposed in a shell; a plurality of blowout outlets for steam is provided on a side of the manifold; a first support plate and a lower support frame are fixed to a lower part in the shell to compart a steam drift space and a drain path; a moisture separating element is provided corresponding to the manifold; steam from which moisture is removed by the moisture separating element is heated by the group of the heating tubes to flow as high-temperature reheat steam to the steam outlet; the moisture is led from the drain opening through the drain path to the drain outlet; and a blocking plate that blocks a part of the drain opening is provided.Type: ApplicationFiled: January 10, 2007Publication date: November 26, 2009Inventors: Issaku Fujita, Nobuki Uda, Jiro Kasahara