Patents by Inventor Mitsuyoshi Tsuchiya
Mitsuyoshi Tsuchiya 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: 20230297951Abstract: This invention provides a technology to support decision making in doing stock planning across a supply chain.Type: ApplicationFiled: November 29, 2022Publication date: September 21, 2023Inventors: Teppei INOUE, Takahiro OGURA, Mitsuyoshi TSUCHIYA
-
Patent number: 11492920Abstract: A steam turbine includes a rotor; a casing which houses the rotor; a plurality of rotor blades disposed around the rotor; and a plurality of stationary vanes supported on the casing. The stationary vane includes a vane body portion and an inner race positioned on an inner side of the vane body portion in a radial direction of the rotor. The stationary vanes include a first stationary vane having a through hole formed through the vane body portion. The rotor has a cavity having a concave shape and being formed such that at least a part of the inner race of the first stationary vane is housed in the cavity. The steam turbine includes a steam passage to discharge steam extracted from a space upstream of the first stationary vane in the casing to the cavity from the inner race through the through hole of the first stationary vane.Type: GrantFiled: January 17, 2018Date of Patent: November 8, 2022Assignee: MITSUBISHI HEAVY INDUSTRIES, LTD.Inventors: Ryo Takata, Mitsuyoshi Tsuchiya, Yasuhiro Sasao
-
Patent number: 11162374Abstract: A turbine nozzle includes a plurality of blades arranged so as to form a tapered flow passage between each two adjacent blades. A suction surface of each blade includes a curved surface, and a throat of the flow passage is formed between the curved surface of one blade and a trailing edge of the other blade of the two adjacent blades at a throat position. An upstream end of the curved surface is positioned upstream of the throat position, and a downstream end of the curved surface is positioned downstream of the throat position.Type: GrantFiled: July 5, 2018Date of Patent: November 2, 2021Assignee: MITSUBISHI POWER, LTD.Inventors: Nao Taniguchi, Ryo Takata, Mitsuyoshi Tsuchiya, Yu Shibata
-
Patent number: 10935007Abstract: A geothermal turbine includes: a rotor; a casing which houses the rotor; a plurality of rotor blades disposed around the rotor; a plurality of stationary vanes supported on the casing; at least one seal portion disposed in a gap between the rotor and the casing at an upstream side of a first-stage rotor blade of the plurality of rotor blades so as to seal leakage steam which flows out inward in a radial direction of the rotor from between a first-stage stationary vane of the plurality of stationary vanes and the first-stage rotor blade; and a steam passage configured to extract a part of steam after passing the first-stage stationary vane and discharge the part of steam to the gap through an interior of the first-stage stationary vane.Type: GrantFiled: December 19, 2017Date of Patent: March 2, 2021Assignee: MITSUBISHI POWER, LTD.Inventors: Ryo Takata, Mitsuyoshi Tsuchiya, Yu Shibata
-
Publication number: 20200182074Abstract: A turbine nozzle includes a plurality of blades arranged so as to form a tapered flow passage between each two adjacent blades. A suction surface of each blade includes a curved surface, and a throat of the flow passage is formed between the curved surface of one blade and a trailing edge of the other blade of the two adjacent blades at a throat position. An upstream end of the curved surface is positioned upstream of the throat position, and a downstream end of the curved surface is positioned downstream of the throat position.Type: ApplicationFiled: July 5, 2018Publication date: June 11, 2020Applicant: Mitsubishi Hitachi Power Systems, Ltd.Inventors: Nao Taniguchi, Ryo Takata, Mitsuyoshi Tsuchiya, Yu Shibata
-
Publication number: 20200072068Abstract: A steam turbine includes a rotor; a casing which houses the rotor; a plurality of rotor blades disposed around the rotor; and a plurality of stationary vanes supported on the casing. The stationary vane includes a vane body portion and an inner race positioned on an inner side of the vane body portion in a radial direction of the rotor. The stationary vanes include a first stationary vane having a through hole formed through the vane body portion. The rotor has a cavity having a concave shape and being formed such that at least a part of the inner race of the first stationary vane is housed in the cavity. The steam turbine includes a steam passage to discharge steam extracted from a space upstream of the first stationary vane in the casing to the cavity from the inner race through the through hole of the first stationary vane.Type: ApplicationFiled: January 17, 2018Publication date: March 5, 2020Applicant: Mitsubishi Hitachi Power Systems, Ltd.Inventors: Ryo Takata, Mitsuyoshi Tsuchiya, Yasuhiro Sasao
-
Patent number: 10494947Abstract: A steam turbine include a steam chest casing that is provided with a plurality of nozzle openings along a circumferential direction; a partition wall to partition the steam chest casing into the main steam chest and a sub-steam chest with smaller capacity than the main steam chest; a main steam pipe that supplies steam to the main steam chest; a steam chest connection pipe that distributes part of the steam, which is supplied to the main steam chest, to the sub-steam chest; a steam chest connection valve; a pressure gauge that measures the pressure of the steam flowing in the main steam pipe; and a control unit that closes the steam chest connection valve when the measured pressure is less than more than or equal to a predetermined threshold value, and opens the steam chest connection valve when the measured pressure is less than the predetermined threshold value.Type: GrantFiled: November 27, 2017Date of Patent: December 3, 2019Assignee: MITSUBISHI HITACHI POWER SYSTEMS, LTD.Inventors: Kenichi Murakami, Mitsuyoshi Tsuchiya, Mamoru Odagawa
-
Publication number: 20190345918Abstract: A geothermal turbine includes: a rotor; a casing which houses the rotor; a plurality of rotor blades disposed around the rotor; a plurality of stationary vanes supported on the casing; at least one seal portion disposed in a gap between the rotor and the casing at an upstream side of a first-stage rotor blade of the plurality of rotor blades so as to seal leakage steam which flows out inward in a radial direction of the rotor from between a first-stage stationary vane of the plurality of stationary vanes and the first-stage rotor blade; and a steam passage configured to extract a part of steam after passing the first-stage stationary vane and discharge the part of steam to the gap through an interior of the first-stage stationary vane.Type: ApplicationFiled: December 19, 2017Publication date: November 14, 2019Applicant: Mitsubishi Hitachi Power Systems, Ltd.Inventors: Ryo Takata, Mitsuyoshi Tsuchiya, Yu Shibata
-
Publication number: 20180149037Abstract: A steam turbine include a steam chest casing that is provided with a plurality of nozzle openings along a circumferential direction; a partition wall to partition the steam chest casing into the main steam chest and a sub-steam chest with smaller capacity than the main steam chest; a main steam pipe that supplies steam to the main steam chest; a steam chest connection pipe that distributes part of the steam, which is supplied to the main steam chest, to the sub-steam chest; a steam chest connection valve; a pressure gauge that measures the pressure of the steam flowing in the main steam pipe; and a control unit that closes the steam chest connection valve when the measured pressure is less than more than or equal to a predetermined threshold value, and opens the steam chest connection valve when the measured pressure is less than the predetermined threshold value.Type: ApplicationFiled: November 27, 2017Publication date: May 31, 2018Applicant: MITSUBISHI HITACHI POWER SYSTEMS, LTD.Inventors: Kenichi Murakami, Mitsuyoshi Tsuchiya, Mamoru Odagawa
-
Patent number: 9214871Abstract: A power conversion device includes: a plurality of cascade-connection type single-phase power converters; and a central control unit that controls the plurality of the single-phase power converters, wherein each of the plurality of single-phase power converters has a single-phase power converter control unit, and the central control unit and the plurality of the single-phase power converter control units are connected via a communication means having a daisy-chain configuration, wherein the single-phase power converter control unit transmits and receives a control signal via the communication means having the daisy-chain configuration, as well as a specific pattern signal, other than a control signal frame, which can be distinguished from the control signal frame, and determines a communication error due to not receiving the specific pattern signal at the single-phase power converter control unit, or an inconsistency between the received signal and the specific pattern signal.Type: GrantFiled: October 25, 2011Date of Patent: December 15, 2015Assignee: Hitachi, Ltd.Inventors: Mitsuyoshi Tsuchiya, Shigenori Inoue, Tetsuya Kato, Tadashi Sodeyama
-
Publication number: 20130223115Abstract: A power conversion device includes: a plurality of cascade-connection type single-phase power converters; and a central control unit that controls the plurality of the single-phase power converters, wherein each of the plurality of single-phase power converters has a single-phase power converter control unit, and the central control unit and the plurality of the single-phase power converter control units are connected via a communication means having a daisy-chain configuration, wherein the single-phase power converter control unit transmits and receives a control signal via the communication means having the daisy-chain configuration, as well as a specific pattern signal, other than a control signal frame, which can be distinguished from the control signal frame, and determines a communication error due to not receiving the specific pattern signal at the single-phase power converter control unit, or an inconsistency between the received signal and the specific pattern signal.Type: ApplicationFiled: October 25, 2011Publication date: August 29, 2013Applicant: Hitachi, Ltd.Inventors: Mitsuyoshi Tsuchiya, Shigenori Inoue, Tetsuya Kato, Tadashi Sodeyama
-
NMR solenoidal coil and NMR probe having specialized static magnetic field compensating arrangements
Patent number: 8154290Abstract: Solenoid coil arrangements for sending a high-frequency wave, receiving or sending and receiving in a measurement of an NMR signal, wherein the solenoid coil has at least two leader lines for connections to a resonance circuit. A static magnetic field compensating member is arranged outside of the leader lines and is at least one of: (a) arranged to extend a main solenoid coil in an axial direction, and not to generate a high-frequency magnetic field in a direction to cancel a high-frequency magnetic field generated by the main solenoid coil; (b) constituted by an insulant having a magnetic susceptibility of the same sign as a material of a main solenoid coil and is in an outer side in an axial direction of the main solenoid to contact with the main solenoid coil; and (c) constituted by ring-shaped members divided into a plurality of sections in a circumferential direction.Type: GrantFiled: August 10, 2007Date of Patent: April 10, 2012Assignee: Hitachi, Ltd.Inventors: Hideki Tanaka, Mitsuyoshi Tsuchiya -
Patent number: 7750636Abstract: In NMR system, for preventing a temperature gradient which causes a decrease in S/N ratio from being created in a sample area while suppressing deterioration in homogeneity of a magnetic field, a thermal conductor having high thermal conductivity is disposed in a room-temperature shim coil. The thermal conductor is provided as a coil bobbin, the temperature of the thermal conductor being controlled by a temperature controller using a heat exchanger. Temperature control gas, which is adjusted to a temperature equal to that of the room-temperature shim coil, is fed from the downside of a sample tube, and it is possible to suppress a temperature gradient from being created in a sample area. According to the present invention, since the temperature distribution can be made to be uniform so as to avoid creating a temperature gradient in the sample area while suppressing deterioration of homogeneity in the magnetic field, the NMR spectrum is sharpened so as to improve the S/N ratio.Type: GrantFiled: January 18, 2008Date of Patent: July 6, 2010Assignee: Hitachi, Ltd.Inventors: Toshiyuki Shiino, Hideo Tsukamoto, Fumio Iida, Mitsuyoshi Tsuchiya
-
Patent number: 7570057Abstract: An object of the present invention is to solve the bending of an NMR probe and a room temperature shim coil so that they can be positioned easily. In the NMR spectrometer including split-pair magnets and a cross bore, a high rigidity straight pipe to which an NMR probe and a room temperature shim coil are attached so as to make an integral object, is provided. The outer diameter of the straight pipe is smaller than the inner diameter of a horizontal bore into which the room temperature shim coil and the probe are inserted. After the room temperature shim coil and the NMR probe are attached to the straight pipe by bolts, respectively, the integral object is inserted into the horizontal bore (a room temperature space) of the NMR spectrometer. The room temperature shim coil and the probe may be attached to different straight pipes.Type: GrantFiled: January 16, 2008Date of Patent: August 4, 2009Assignee: Hitachi, Ltd.Inventors: Mitsuyoshi Tsuchiya, Hideo Tsukamoto, Fumio Iida, Toshiyuki Shiino, Hideki Tanaka
-
Patent number: 7521929Abstract: In an NMR apparatus provided with a split type magnet, in order to position a probe at a high precision in a narrow homogeneous magnetic field space, a positioning of a center of a probe coil is first located to a proper position by inserting an NMR probe from a horizontal bore. At this position, a sample tube is inserted from a vertical bore, and an NMR signal is measured from the probe coil. An NMR signal measuring apparatus amplifies the NMR signal from the probe coil, and executes an A/D conversion so as to determine an NMR spectrum signal, and an NMR signal analyzing apparatus compares the NMR spectrum signal. A probe is set at a position where a sharpness of the spectrum is largest, that is, a magnetic field homogeneity coefficient is high, by repeating the operations mentioned above.Type: GrantFiled: January 10, 2007Date of Patent: April 21, 2009Assignee: Hitachi, Ltd.Inventors: Mitsuyoshi Tsuchiya, Michiya Okada, Fumio Iida, Hiromitsu Seino
-
Publication number: 20080204026Abstract: An object of the present invention is to solve the bending of an NMR probe and a room temperature shim coil so that they can be positioned easily. In the NMR spectrometer including split-pair magnets and a cross bore, a high rigidity straight pipe to which an NMR probe and a room temperature shim coil are attached so as to make an integral object, is provided. The outer diameter of the straight pipe is smaller than the inner diameter of a horizontal bore into which the room temperature shim coil and the probe are inserted. After the room temperature shim coil and the NMR probe are attached to the straight pipe by bolts, respectively, the integral object is inserted into the horizontal bore (a room temperature space) of the NMR spectrometer. The room temperature shim coil and the probe may be attached to different straight pipes.Type: ApplicationFiled: January 16, 2008Publication date: August 28, 2008Inventors: Mitsuyoshi Tsuchiya, Hideo Tsukamoto, Fumio Iida, Toshiyuki Shiino, Hideki Tanaka
-
Publication number: 20080204015Abstract: In NMR system, for preventing a temperature gradient which causes a decrease in S/N ratio from being created in a sample area while suppressing deterioration in homogeneity of a magnetic field, a thermal conductor having high thermal conductivity is disposed in a room-temperature shim coil. The thermal conductor is provided as a coil bobbin, the temperature of the thermal conductor being controlled by a temperature controller using a heat exchanger. Temperature control gas, which is adjusted to a temperature equal to that of the room-temperature shim coil, is fed from the downside of a sample tube, and it is possible to suppress a temperature gradient from being created in a sample area. According to the present invention, since the temperature distribution can be made to be uniform so as to avoid creating a temperature gradient in the sample area while suppressing deterioration of homogeneity in the magnetic field, the NMR spectrum is sharpened so as to improve the S/N ratio.Type: ApplicationFiled: January 18, 2008Publication date: August 28, 2008Inventors: Toshiyuki Shiino, Hideo Tsukamoto, Fumio Iida, Mitsuyoshi Tsuchiya
-
Publication number: 20080074221Abstract: The invention provides a solenoid coil in which a sensitive area is expanded by increasing a homogeneity of a static magnetic field in an outer side from a solenoid coil end so as to be capable of receiving a signal from a space in an outer side from the coil end. A static magnetic field compensating member is arranged in such a manner as to extend a main solenoid coil in an axial direction, and the static magnetic field compensating member is structured such as not to generate a high-frequency magnetic field in such a direction as to cancel a high-frequency magnetic field generated by the main solenoid coil. Specifically, a ring-shaped material constituted by an insulant having a magnetic susceptibility of the same sign as a material of the main solenoid coil is arranged in an outer side in an axial direction of the main solenoid in such a manner as to come into contact with the main solenoid coil.Type: ApplicationFiled: August 10, 2007Publication date: March 27, 2008Inventors: HIDEKI TANAKA, Mitsuyoshi Tsuchiya
-
Publication number: 20070164745Abstract: In an NMR apparatus provided with a split type magnet, in order to position a probe at a high precision in a narrow homogeneous magnetic field space, a positioning of a center of a probe coil is first located to a proper position by inserting an NMR probe from a horizontal bore. At this position, a sample tube is inserted from a vertical bore, and an NMR signal is measured from the probe coil. An NMR signal measuring apparatus amplifies the NMR signal from the probe coil, and executes an A/D conversion so as to determine an NMR spectrum signal, and an NMR signal analyzing apparatus compares the NMR spectrum signal. A probe is set at a position where a sharpness of the spectrum is largest, that is, a magnetic field homogeneity coefficient is high, by repeating the operations mentioned above.Type: ApplicationFiled: January 10, 2007Publication date: July 19, 2007Inventors: Mitsuyoshi Tsuchiya, Michiya Okada, Fumio Iida, Hiromitsu Seino
-
Patent number: 7196883Abstract: A superconducting magnet system with a quench protection circuit includes a superconducting magnet having a plurality of series-connected superconducting coils, a persistent current switch connected in parallel with the superconducting coils, and first and second quench protection circuits connected in parallel with the superconducting coils and the persistent current switch. The first quench protection circuit includes anti-parallel diodes and parallelly connected resistive heaters and shunt resistors, and the resistive heaters and the shunt resistors are each connected in series with the diodes. The second quench protection circuit has a diode and a metal of copper connected with the diode, and a turn-on voltage of the diode in the second quench protection circuit is lower than a turn-on voltage of the diodes in the first quench protection circuit.Type: GrantFiled: May 31, 2006Date of Patent: March 27, 2007Assignee: Hitachi, Ltd.Inventors: Mitsuyoshi Tsuchiya, Kazuhiro Takeuchi, Hideo Tsukamoto, Tsuyoshi Wakuda