Patents by Inventor Kunihiko Wada
Kunihiko Wada 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).
-
Patent number: 11021993Abstract: A thermal insulation coating member includes: a substrate having a surface; a binding layer on the surface, and a thermal insulation layer on the binding layer. The thermal insulation layer includes: a first ceramic layer including a plurality of first flat pores, the plurality of first flat pores being inclined at a first angle with respect to the surface and extending in a first direction; and a second ceramic layer including a plurality of second flat pores, the plurality of second flat pores being inclined at a second angle with respect to the surface and extending in a second direction. The second angle differs from the first angle, the second direction differing from the first direction, or the second angle and the second direction respectively differing from the first angle and the first direction.Type: GrantFiled: January 17, 2019Date of Patent: June 1, 2021Assignee: TOSHIBA ENERGY SYSTEMS & SOLUTIONS CORPORATIONInventors: Satoru Kuboya, Kunihiko Wada, Daizo Saito, Masataka Tamura, Nobuhiro Okizono, Iwataro Sato, Hideyuki Maeda, Takeo Takahashi
-
Publication number: 20190153892Abstract: A thermal insulation coating member comprises: a substrate having a surface; a binding layer on the surface; and a thermal insulation layer on the binding layer. The thermal insulation layer includes: a first ceramic layer having a plurality of first flat pores, the first flat pores being inclined at a first angle with respect to the surface and extending in a first direction; and a second ceramic layer having a plurality of second flat pores, the second flat pores being inclined at a second angle with respect to the surface and extending in a second direction. The second angle differs from the first angle, the second direction differing from the first direction, or the second angle and the second direction respectively differing from the first angle and the first direction.Type: ApplicationFiled: January 17, 2019Publication date: May 23, 2019Applicant: TOSHIBA ENERGY SYSTEMS & SOLUTIONS CORPORATIONInventors: Satoru KUBOYA, Kunihiko WADA, Daizo SAITO, Masataka TAMURA, Nobuhiro OKIZONO, Iwataro SATO, Hideyuki MAEDA, Takeo TAKAHASHI
-
Patent number: 9598969Abstract: A turbine according to an embodiment includes: a formation object member; a facing member; and a seal part. A formation object member is one of a static part and a rotation part. A facing member is the other of the static part and the rotation part. A seal part at the formation object member is configured to reduce combustion gas leaking between the formation object member and the facing member. The seal part including a ceramics layer. The ceramics layer has a heat conductivity lower than that of the formation object member, and has a concave and convex shape at a surface thereof. The ceramics layer is not in contact with the facing member, or has hardness higher than that of the facing member so that the facing member is preferentially abraded when the facing member and the ceramics layer are in contact with each other.Type: GrantFiled: June 19, 2013Date of Patent: March 21, 2017Assignee: KABUSHIKI KAISHA TOSHIBAInventors: Kunihiko Wada, Satoru Kuboya, Daizo Saito, Hideyuki Maeda, Nobuhiro Okizono, Iwataro Sato, Kazutaka Tsuruta, Naoyuki Okamura
-
Patent number: 9297260Abstract: An airflow control device 10 in an embodiment includes: a vortex shedding structure portion 20 discharging an airflow flowing on a surface in a flow direction as a vortex flow; and a first electrode 40 and a second electrode 41 disposed on a downstream side of the vortex shedding structure portion 20 via a dielectric. By applying a voltage between the first electrode 40 and the second electrode 41, flow of the airflow on the downstream side of the vortex shedding structure portion 20 is controlled.Type: GrantFiled: March 13, 2012Date of Patent: March 29, 2016Assignee: Kabushiki Kaisha ToshibaInventors: Motofumi Tanaka, Hisashi Matsuda, Hiroyuki Yasui, Shohei Goshima, Naohiko Shimura, Kunihiko Wada, Tamon Ozaki, Toshiki Osako, Masahiro Asayama, Yutaka Uchida
-
Patent number: 9045993Abstract: A steam turbine 10 of an embodiment has seal rings 60 between an inlet sleeve 40 for introducing steam and an inner casing 20 and an outer casing 21 into which the inlet sleeve 40 is inserted. The seal rings 60 have high-temperature side seal rings 70 which are disposed their inner circumferences contacted to the outer circumference of the inlet sleeve 40, and low-temperature side seal rings 80 which are formed to have inner and outer diameters larger than those of the high-temperature side seal rings 70 and disposed with their outer circumferences contacted to the inner casing 20 or the outer casing 21. A thermal barrier layer 90 is disposed between the inner circumferences of the high-temperature side seal rings 70 and the outer circumference of the inlet sleeve 40 and between the high-temperature side seal rings 70 and the low-temperature side seal rings 80.Type: GrantFiled: March 15, 2012Date of Patent: June 2, 2015Assignee: Kabushiki Kaisha ToshibaInventors: Asako Inomata, Katsuya Yamashita, Kunihiko Wada, Kazuhiro Saito, Yusuke Suzuki, Takao Inukai, Shogo Iwai, Takeo Suga
-
Patent number: 9025721Abstract: There is provided a holding device which can hold a molten corium for a predetermined period even when the molten corium is exposed to heat or undergoes any chemical reaction and which is applicable to practical use. There is provided a holding device provided below a nuclear reactor pressure vessel for holding a molten corium, wherein the holding device includes a base material in contact with a cooling medium, and a multilayer stack structure on the base material. The multilayer stack structure has a first layer having heat-resistant property, a second layer formed on the first layer and having heat-resistant property with lower heat conductivity than that of the first layer, and a third layer formed on the second layer and having corrosion-resistant property and impact-absorbing property.Type: GrantFiled: September 14, 2012Date of Patent: May 5, 2015Assignee: Kabushiki Kaisha ToshibaInventors: Kunihiko Wada, Fumiyo Kuno, Yutaka Ishiwata, Tsuneji Kameda, Ryoichi Hamazaki, Noriyuki Katagiri
-
Patent number: 8890347Abstract: A wind power generation system 10 of an embodiment includes a rotor 40 having a hub 41 and blades 42, a nacelle 31 pivotally supporting the rotor 40, a tower 30 supporting the nacelle 31, an airflow generation device 60 provided in a leading edge of each of the blades 42 and having a first electrode 61 and a second electrode 62 which are separated via a dielectric, and a discharge power supply 65 capable of applying a voltage between the electrodes of the airflow generation device 60. Further, the system includes a measurement device detecting information related to at least one of output in the wind power generation system 10, torque in the rotor 40 and a rotation speed of the blades 42, and a control unit 110 controlling the discharge power supply 65 based on an output from the measurement device.Type: GrantFiled: May 2, 2012Date of Patent: November 18, 2014Assignee: Kabushiki Kaisha ToshibaInventors: Motofumi Tanaka, Hisashi Matsuda, Kunihiko Wada, Hiroyuki Yasui, Shohei Goshima, Naohiko Shimura, Yutaka Ishiwata, Susumu Kinoshita, Tamon Ozaki, Sueyoshi Mizuno, Shinichi Noda, Toshiki Osako, Toshimasa Yamada
-
Publication number: 20140193256Abstract: There is provided a wind power generation apparatus capable of suppressing power consumption in an airflow generation device, and securely suppressing flow separation on a blade surface, thereby improving efficiency. A wind power generation apparatus 10 of an embodiment has wind turbine blades 32 each having, in a chord length direction, a base blade 51 fixed to a rotation shaft and a front divided blade 50 fixed in a pivotally adjustable manner, a first electrode 41 and a second electrode 43 which are disposed separately via a dielectric 42 on a blade surface of at least one of the base blade 51 and the front divided blade 50, and a discharge power supply 61 capable of applying voltage between the first electrode 41 and the second electrode 43.Type: ApplicationFiled: March 13, 2014Publication date: July 10, 2014Applicant: Kabushiki Kaisha ToshibaInventors: Hisashi MATSUDA, Motofumi Tanaka, Shohei Goshima, Kunihiko Wada, Tamon Ozaki, Toshiki Osako
-
Patent number: 8727705Abstract: A steam turbine 10 is provided with a double-structure comprising an inner casing 20 and an outer casing 21. A turbine rotor 22, in which plural stages of moving blades 24 are circumferentially implanted, is operatively disposed in inner casing 20. A diaphragm outer ring 25 and a diaphragm inner ring are disposed along the circumferential direction in inner casing 20. Stationary blades 27 are circumferentially provided between diaphragm outer ring 25 and the diaphragm inner ring, so that diaphragm outer ring 25, the diaphragm inner ring and stationary blades 27 form a stage of stationary blades. The stages of the stationary blades are arranged alternately with the stages of moving blades 24 in the axial direction of turbine rotor 22. A cooling medium passage 40 for passing a cooling medium CM which is supplied through a supply pipe 45 is formed between inner casing 20 and diaphragm outer ring 25.Type: GrantFiled: July 20, 2010Date of Patent: May 20, 2014Assignee: Kabushiki Kaisha ToshibaInventors: Asako Inomata, Katsuya Yamashita, Kazuhiro Saito, Takao Inukai, Kunihiko Wada, Kazutaka Ikeda, Takeo Suga
-
Patent number: 8674537Abstract: A wind power generation system 10 of an embodiment includes a rotor 40 having blades 42, an airflow generation device 60 provided in a leading edge of each of the blades 42 and having a first electrode 61 and a second electrode 62 which are separated via a dielectric, a discharge power supply 65 applying a voltage between the electrodes of the airflow generation device 60, and a control unit 110 controlling the discharge power supply 65. The control unit 110 controls the voltage to perform pulse modulation so that the value of a relational expression fC/U is 0.1 or larger and 9 or smaller where f is a pulse modulation frequency of the voltage, C is a chord length of the blades 42, and U is a relative velocity combining a peripheral velocity of the blades 42 and a wind velocity, so as to generate plasma induced flow.Type: GrantFiled: March 13, 2012Date of Patent: March 18, 2014Assignee: Kabushiki Kaisha ToshibaInventors: Motofumi Tanaka, Hisashi Matsuda, Kunihiko Wada, Hiroyuki Yasui, Shohei Goshima, Naohiko Shimura, Yutaka Ishiwata, Susumu Kinoshita, Tamon Ozaki, Sueyoshi Mizuno, Shinichi Noda
-
Publication number: 20140023482Abstract: A turbine according to an embodiment includes: a formation object member; a facing member; and a seal part. A formation object member is one of a static part and a rotation part. A facing member is the other of the static part and the rotation part. A seal part at the formation object member is configured to reduce combustion gas leaking between the formation object member and the facing member. The seal part including a ceramics layer. The ceramics layer has a heat conductivity lower than that of the formation object member, and has a concave and convex shape at a surface thereof. The ceramics layer is not in contact with the facing member, or has hardness higher than that of the facing member so that the facing member is preferentially abraded when the facing member and the ceramics layer are in contact with each other.Type: ApplicationFiled: June 19, 2013Publication date: January 23, 2014Inventors: Kunihiko Wada, Satoru Kuboya, Daizo Saito, Hideyuki Maeda, Nobuhiro Okizono, Iwataro Sato, Kazutaka Tsuruta, Naoyuki Okamura
-
Publication number: 20130070886Abstract: There is provided a holding device which can hold a molten corium for a predetermined period even when the molten corium is exposed to heat or undergoes any chemical reaction and which is applicable to practical use. There is provided a holding device provided below a nuclear reactor pressure vessel for holding a molten corium, wherein the holding device includes a base material in contact with a cooling medium, and a multilayer stack structure on the base material. The multilayer stack structure has a first layer having heat-resistant property, a second layer formed on the first layer and having heat-resistant property with lower heat conductivity than that of the first layer, and a third layer formed on the second layer and having corrosion-resistant property and impact-absorbing property.Type: ApplicationFiled: September 14, 2012Publication date: March 21, 2013Inventors: Kunihiko WADA, Fumiyo Kuno, Yutaka Ishiwata, Tsuneji Kameda, Ryoichi Hamazaki, Noriyuki Katagiri
-
Patent number: 8393861Abstract: In one embodiment, a steam device includes a high-temperature member and a low-temperature member. One surface of the high-temperature member is exposed to high-temperature steam, and the other surface is cooled by cooling steam having a temperature lower than the high-temperature steam. The low-temperature member is disposed to face the high-temperature member with a passage for the cooling steam therebetween and is formed of a material having a heat resistance lower than that of the high-temperature member.Type: GrantFiled: May 26, 2011Date of Patent: March 12, 2013Assignee: Kabushiki Kaisha ToshibaInventors: Kunihiko Wada, Katsuya Yamashita, Yutaka Ishiwata, Yuujiro Nakatani, Takeo Suga, Asako Inomata, Kazuhiro Saito, Takao Inukai, Yusuke Suzuki, Shogo Iwai
-
Publication number: 20120291874Abstract: An airflow control device 10 in an embodiment includes: a vortex shedding structure portion 20 discharging an airflow flowing on a surface in a flow direction as a vortex flow; and a first electrode 40 and a second electrode 41 disposed on a downstream side of the vortex shedding structure portion 20 via a dielectric. By applying a voltage between the first electrode 40 and the second electrode 41, flow of the airflow on the downstream side of the vortex shedding structure portion 20 is controlled.Type: ApplicationFiled: March 13, 2012Publication date: November 22, 2012Inventors: Motofumi Tanaka, Hisashi Matsuda, Hiroyuki Yasui, Shohei Goshima, Naohiko Shimura, Kunihiko Wada, Tamon Ozaki, Toshiki Osako, Masahiro Asayama, Yutaka Uchida
-
Publication number: 20120280500Abstract: A wind power generation system 10 of an embodiment includes a rotor 40 having blades 42, an airflow generation device 60 provided in a leading edge of each of the blades 42 and having a first electrode 61 and a second electrode 62 which are separated via a dielectric, a discharge power supply 65 applying a voltage between the electrodes of the airflow generation device 60, and a control unit 110 controlling the discharge power supply 65. The control unit 110 controls the voltage to perform pulse modulation so that the value of a relational expression fC/U is 0.1 or larger and 9 or smaller where f is a pulse modulation frequency of the voltage, C is a chord length of the blades 42, and U is a relative velocity combining a peripheral velocity of the blades 42 and a wind velocity, so as to generate plasma induced flow.Type: ApplicationFiled: March 13, 2012Publication date: November 8, 2012Inventors: Motofumi TANAKA, Hisashi Matsuda, Kunihiko Wada, Hiroyuki Yasui, Shohei Goshima, Naohiko Shimura, Yutaka Ishiwata, Susumu Kinoshita, Tamon Ozaki, Sueyoshi Mizuno, Shinichi Noda
-
Publication number: 20120280501Abstract: A wind power generation system 10 of an embodiment includes a rotor 40 having a hub 41 and blades 42, a nacelle 31 pivotally supporting the rotor 40, a tower 30 supporting the nacelle 31, an airflow generation device 60 provided in a leading edge of each of the blades 42 and having a first electrode 61 and a second electrode 62 which are separated via a dielectric, and a discharge power supply 65 capable of applying a voltage between the electrodes of the airflow generation device 60. Further, the system includes a measurement device detecting information related to at least one of output in the wind power generation system 10, torque in the rotor 40 and a rotation speed of the blades 42, and a control unit 110 controlling the discharge power supply 65 based on an output from the measurement device.Type: ApplicationFiled: May 2, 2012Publication date: November 8, 2012Inventors: Motofumi Tanaka, Hisashi Matsuda, Kunihiko Wada, Hiroyuki Yasui, Shohei Goshima, Naohiko Shimura, Yutaka Ishiwata, Susumu Kinoshita, Tamon Ozaki, Sueyoshi Mizuno, Shinichi Noda, Toshiki Osako, Toshimasa Yamada
-
Publication number: 20120267892Abstract: According to the present invention, there is provided a wind power generating system, having a plurality of plasma airflow generating units, each including a first electrode and a second electrode arranged being separated from the first electrode with a dielectric film and generating plasma airflow owing to dielectric barrier discharge when voltage is applied between the first electrode and the second electrode; and at least one plasma power source which supplies voltage to the plasma airflow generating units, wherein the plasma airflow generating units are arranged at a blade of the wind power generating system and are supplied with voltage as being separated into a plurality of lines separately for each of the lines.Type: ApplicationFiled: February 28, 2012Publication date: October 25, 2012Applicant: Kabushiki Kaisha ToshibaInventors: Hisashi Matsuda, Motofumi Tanaka, Hiroyuki Yasui, Shohei Goshima, Kunihiko Wada, Tamon Ozaki, Toshiki Osako
-
Publication number: 20120243978Abstract: A steam turbine 10 of an embodiment has seal rings 60 between an inlet sleeve 40 for introducing steam and an inner casing 20 and an outer casing 21 into which the inlet sleeve 40 is inserted. The seal rings 60 have high-temperature side seal rings 70 which are disposed their inner circumferences contacted to the outer circumference of the inlet sleeve 40, and low-temperature side seal rings 80 which are formed to have inner and outer diameters larger than those of the high-temperature side seal rings 70 and disposed with their outer circumferences contacted to the inner casing 20 or the outer casing 21. A thermal barrier layer 90 is disposed between the inner circumferences of the high-temperature side seal rings 70 and the outer circumference of the inlet sleeve 40 and between the high-temperature side seal rings 70 and the low-temperature side seal rings 80.Type: ApplicationFiled: March 15, 2012Publication date: September 27, 2012Inventors: Asako INOMATA, Katsuya YAMASHITA, Kunihiko WADA, Kazuhiro SAITO, Yusuke SUZUKI, Takao INUKAI, Shogo IWAI, Takeo SUGA
-
Publication number: 20110280717Abstract: In one embodiment, a steam device includes a high-temperature member and a low-temperature member. One surface of the high-temperature member is exposed to high-temperature steam, and the other surface is cooled by cooling steam having a temperature lower than the high-temperature steam. The low-temperature member is disposed to face the high-temperature member with a passage for the cooling steam therebetween and is formed of a material having a heat resistance lower than that of the high-temperature member.Type: ApplicationFiled: May 26, 2011Publication date: November 17, 2011Inventors: Kunihiko WADA, Katsuya Yamashita, Yutaka Ishiwata, Yuujiro Nakatani, Takeo Suga, Asako Inomata, Kazuhiro Saito, Takao Inukai, Yusuke Suzuki, Shogo Iwai
-
Publication number: 20110033281Abstract: A steam turbine 10 is provided with a double-structure comprising an inner casing 20 and an outer casing 21. A turbine rotor 22, in which plural stages of moving blades 24 are circumferentially implanted, is operatively disposed in inner casing 20. A diaphragm outer ring 25 and a diaphragm inner ring are disposed along the circumferential direction in inner casing 20. Stationary blades 27 are circumferentially provided between diaphragm outer ring 25 and the diaphragm inner ring, so that diaphragm outer ring 25, the diaphragm inner ring and stationary blades 27 form a stage of stationary blades. The stages of the stationary blades are arranged alternately with the stages of moving blades 24 in the axial direction of turbine rotor 22. A cooling medium passage 40 for passing a cooling medium CM which is supplied through a supply pipe 45 is formed between inner casing 20 and diaphragm outer ring 25.Type: ApplicationFiled: July 20, 2010Publication date: February 10, 2011Inventors: Asako INOMATA, Katsuya YAMASHITA, Kazuhiro SAITO, Takao INUKAI, Kunihiko WADA, Kazutaka IKEDA, Takeo SUGA