1801 patents
Page 4 of 91
Utility
Gas Turbine Rotor Blade and Gas Turbine
7 Dec 23
A platform of a gas turbine rotor blade according to one embodiment includes a groove portion recessed from an end surface on a trailing edge side toward a leading edge side.
Ryo MURATA, Yuji KOMAGOME, Naoya TATSUMI, Hiroki KITADA, Shunsuke TORII
Filed: 23 Mar 23
Utility
Water Quality Diagnosis Method
7 Dec 23
A water quality diagnosis method, includes: a step of obtaining a measurement value of electrical conductivity of a sample water derived from a steam or a circulating water obtained from a steam turbine plant using ammonia as a water conditioner and a measurement value of pH of the sample water; and a determination step of determining presence or absence of abnormality of water quality of the steam turbine plant by using at least a first determination condition of whether the measurement value of the electrical conductivity and the measurement value of the pH are included in a first determination region which is set within a first correlation map of the electrical conductivity and the pH taking into account a carbonic acid concentration range where carbonic acid is dissolvable in the sample water.
Akihiro HAMASAKI, Haruka KIDO, Taro ICHIHARA, Tetsuya SAWATSUBASHI, Yuta NAKATSUCHI
Filed: 25 Jan 22
Utility
Gas Turbine Output Correcting Method, Control Method, Device for Executing Said Methods, and Program Causing Computer to Execute Said Methods
7 Dec 23
An output corrector is provided with an adjustment coefficient creating unit which creates an adjustment coefficient, an output adjusting unit which adjusts a control output using the adjustment coefficient, and an output accepting unit which accepts an output from an output meter for detecting the output of a gas turbine.
Naoki NAKATA, Hidehiko NISHIMURA, Jotaro NAKAGAWA
Filed: 26 Jul 21
Utility
Turbine Stator Vane and Steam Turbine
7 Dec 23
A turbine stator vane comprising: a stator vane body extending in a radial direction intersecting the flow direction of steam; a recovery portion that is formed on the surface of the stator vane body, and recovers a liquid film flowing along the surface; and a center region, which is formed on the surface of the stator vane body and in which a plurality of first fine grooves extending from the upstream side toward the recovery portion in the flow direction are formed, wherein the interval between adjacent first fine grooves narrows from the upstream side toward the recovery portion.
Shunsuke MIZUMI, Soichiro TABATA, Koji ISHIBASHI, Satoshi MIYAKE
Filed: 30 Mar 22
Utility
Combustion Adjustment Method and Combustion Control Device of Gas Turbine
7 Dec 23
This combustion adjustment method applied to the combustion control of a combustor executes a first step for selecting a combustion parameter for a load of a gas turbine and increasing or decreasing a command value of the combustion parameter from an original location.
Yutaro FUJIOKA, Tsukasa ITO, Fumikatsu INOUE, Ryoichi HAGA, Takahiro ITO
Filed: 20 Oct 21
Utility
Boiler plant and carbon dioxide removal method
5 Dec 23
A boiler plant includes a carbon dioxide capture system.
Atsushi Tsutsumi, Hiromi Ishii, Tetsuya Tanaka, Naoyuki Nagafuchi, Takashi Kamijo
Filed: 7 Dec 20
Utility
Charging system, charging station, movable body, and charging method
5 Dec 23
A charging system includes: a movable body including a frame and a battery provided in the frame; and a charging station configured to charge the battery.
Syuhei Kobori, Ken Onishi, Noriko Onishi, Koji Shukutani, Hiroyoshi Okazaki, Hiroyoshi Kojima
Filed: 14 Mar 19
Utility
Signal processing device, signal processing method, and signal processing program
5 Dec 23
A signal processing device including an acquisition unit configured to acquire signal waveform data corresponding to a frequency signal, a generation unit configured to generate a sine wave and a cosine wave of demodulation waveform data having a demodulation frequency between the first frequency and the second frequency, a first phase calculation unit configured to calculate a first phase based on a multiplication result of the sine wave and the signal waveform data at a first time and a multiplication result of the cosine wave and the signal waveform data at the first time, a second phase calculation unit configured to calculate a second phase based on a multiplication result of the sine wave and the signal waveform data at a second time advanced from the first time by a specified time interval less than one cycle of the demodulation frequency.
Hideaki Emoto, Mitsuyuki Shirae
Filed: 18 Nov 20
Utility
Lining method and lining
5 Dec 23
A lining method includes fixing a backing strip in a frame shape to a concrete surface of already-placed concrete so that the backing strip protrudes from the concrete surface; disposing a filler inside a frame of the backing strip; making edges of a plurality of lining plates butt against each other at a position of the backing strip to cover the backing strip and the concrete surface; and joining the edges of the lining plates by seal welding.
Takao Ito, Hayao Kurono, Shuhei Dobara
Filed: 25 Feb 19
Utility
Turbine vane and gas turbine comprising same
5 Dec 23
A turbine vane includes a blade body and a shroud.
Saki Matsuo, Satoshi Hada, Tomoko Morikawa, Hiroyuki Otomo
Filed: 6 Aug 20
Utility
Steam generation apparatus and exhaust gas heat recovery plant
5 Dec 23
A steam generation apparatus includes: a heat medium flow passage through which a heat medium flows; a primary economizer disposed in the heat medium flow passage; a secondary economizer disposed in the heat medium flow passage at an upstream side of the primary economizer with respect to a flow direction of the heat medium; a primary evaporator disposed in the heat medium flow passage at an upstream side of the secondary economizer with respect to the flow direction of the heat medium; a first flash tank for generating flash steam; a first feed water line configured to supply water heated by the primary economizer to the secondary economizer; and a second feed water line disposed so as to branch from the first feed water line and configured to supply the water heated by the primary economizer to the first flash tank.
Hideyuki Uechi, Yuichi Otani, Fumito Kajitani, Taichi Yoshii, Norito Katsuki, Kanako Nagayama, Takahiro Hidaka
Filed: 26 Nov 20
Utility
Method of disassembling steam generator
5 Dec 23
A method of disassembling a steam generator including a body portion, a water chamber, a tube plate and a plurality of heat transfer tubes, the method includes: a step of obtaining a disassembly target including the tube plate and a part of the heat transfer tubes; a step of specifying the heat transfer tube fixed to the tube plate; a step of releasing fixation between the part of the heat transfer tube and the tube plate; and a step of pulling out the part of the heat transfer tube from the through-hole, in the step of releasing the fixation, the TIG heating head is inserted from the primary region side, and in the step of releasing the fixation, the TIG heating head is moved to a plurality of streaks only in a direction from the primary region side to the secondary region side.
Reiko Ueno, Takeshi Yamamoto, Yuki Kobayashi, Daisuke Hara, Masaki Noda, Kohei Tada
Filed: 26 Apr 22
Utility
Strut cover, exhaust casing, and gas turbine
5 Dec 23
A strut cover for a gas turbine includes: a cylindrical sheet metal member having a hollow portion; and a flare member that is connected to one end of the cylindrical sheet metal member in an axial direction of the cylindrical sheet metal member and includes a curved portion having an outer surface such that a distance from a center axis of the cylindrical sheet metal member to the outer surface increases with increasing a distance from the cylindrical sheet metal member in the axial direction.
Tomoyuki Hirata, Eiichi Tsutsumi, Kazuki Kitagawa, Takayoshi Iijima
Filed: 9 Sep 20
Utility
Upgrade evaluation method and upgrade evaluation device
5 Dec 23
Provided is an upgrade evaluation device for calculating cost in relation to the introduction effects of an upgrade menu.
Koji Imakita
Filed: 24 Jun 19
Utility
Apparatus and Method for Evaluating Performance of Device and Storage Medium
30 Nov 23
An apparatus for evaluating performance of a device includes: an overall performance function acquisition part configured to obtain an overall performance function which indicates a change over time in performance index of an evaluation target device, based on data acquired during operation of the evaluation target device; an individual performance function definition part configured to define a plurality of individual performance functions each of which indicates a change over time in the performance index caused by a plurality of change factors of the performance index, respectively; and a model generation part configured to generate a performance estimation model for the evaluation target device by performing superposition of the plurality of individual performance functions.
Naoto Omura, Shunsuke Mizumi, Hideki Ono, Shota Mochizuki, Yoshito Nagahama, Nobuhiro Osaki
Filed: 16 Aug 22
Utility
Nuclear Reactor
30 Nov 23
An object is to efficiently take heat out of a reactor core while retaining fission products.
Nozomu Murakami, Wataru Nakazato, Takashi Hasegawa, Satoru Kamohara, Yasutaka Harai, Tadakatsu Yodo, Shota Kobayashi, Shohei Otsuki, Yutaka Tanaka, Tatsuo Ishiguro, Hironori Noguchi, Hideyuki Kudo, Takafumi Noda, Kazuhiro Yoshida
Filed: 21 Sep 21
Utility
Turbine Stator Vane and Gas Turbine
30 Nov 23
A turbine stator vane includes: a blade body having an outer end and an inner end in a blade height direction; a cooling passage extending along the blade height direction inside the blade body; an outer shroud connected to the blade body at the outer end side of the blade body in the blade height direction; an inner shroud connected to the blade body at the inner end side of the blade body in the blade height direction; and an internal passage forming part extending along the blade height direction inside the cooling passage.
Saki MATSUO, Yasuo MIYAHISA, Shunsuke TORII
Filed: 3 May 23
Utility
Fuel Gas Supply Apparatus for Fuel Cell
30 Nov 23
A fuel gas supply apparatus for a fuel cell includes: a plurality of fuel gas supply sources, a plurality of fuel gas supply lines, a plurality of first valves disposed on the plurality of fuel gas supply lines, the first valves being capable of opening and closing on the basis of a pressure of a mixed gas of the plurality of fuel gases or a pressure of a mixed gas tank.
Yusuke Hitotsubashi, Yuichi Teramoto, Hiroki Irie
Filed: 21 Feb 22
Utility
Clearance Sensor
30 Nov 23
A clearance sensor includes: a columnar detection electrode having a detection end surface on one end side in the axial direction of the center axis; an electrode member including a guard electrode and a ground electrode having the center axis coaxial with that of the detection electrode; an insulating member linking between the detection electrode and the guard electrode, and linking between the guard electrode and the ground electrode; and an insulating layer filling the spaces between the detection electrode, the guard electrode, the ground electrode, and the insulating member, wherein the space between the electrode member and the insulating member is retained in the axial direction and/or the direction around the axis of the center axis.
Motoharu UEDA, Tomoyuki ONISHI, Toshiaki KOKUFUDA, Hiroki TAKEDA, Takuma IKEMOTO
Filed: 10 Aug 23
Utility
Turbine Blade and Gas Turbine
30 Nov 23
A turbine blade includes: a pin fin passage formed inside a trailing edge portion of an airfoil part, extending toward a trailing edge of the airfoil part, and opening to outside of the airfoil part at the trailing edge; and a plurality of pin fins connecting a pair of facing inner walls constituting the pin fin passage.
Yamato SHIRAMASA, Yasuo MIYAHISA, Shunsuke TORII
Filed: 2 May 23