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1.发明授权公开(公告)号：US11834969B2
公开(公告)日：2023-12-05
申请号：US17630237
申请日：2020-09-25
CPC分类号： F01K9/00 , C02F1/66 , F01D25/00 , F22B37/56 , F22D11/006 , F05D2220/31 , F05D2260/60
摘要： A steam turbine plant includes a chemical supply part configured to supply a pH adjuster to feedwater to a steam generator, an adjustment part for adjusting a supply amount of the pH adjuster to the feedwater by the chemical supply part, and at least one carbon steel component that includes a pipe or a device formed from carbon steel and through which the feedwater flows, the carbon steel component being configured such that an internal temperature at least partially falls within a range of not less than 120° C. and not greater than 180° C. under load operating condition of the steam turbine plant. The adjustment part is configured to, under the load operating condition, adjust the supply amount of the pH adjuster such that pH of the feedwater in each of the at least one carbon steel component is not less than 9.8.
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公开(公告)号：US20230212980A1
公开(公告)日：2023-07-06
申请号：US17928466
申请日：2021-05-31
发明人： Ichiro NAGANO , Mayumi SAITO , Keiji EGUCHI , Kuniaki AOYAMA
IPC分类号： F02C7/00 , F01D25/00 , G05B19/042
CPC分类号： F02C7/00 , F01D25/00 , G05B19/0428 , F05D2220/32 , F05D2260/80 , F05D2260/83 , G05B2219/41108
摘要： An acquisition unit acquires a bundle of detection values for each of a plurality of sensor values pertaining to a plant. A distance calculation unit obtains the Mahalanobis distance of the bundle of detection values acquired by the acquisition unit using, as reference, a unit space constituted by a collection of bundles of detection values for each of the plurality of sensor values. A determining unit determines, based on whether the Mahalanobis distance is at or within a prescribed threshold, whether the operation state of the plant is normal or abnormal. A trend specification unit specifies a trend with regards to at least one sensor value. An abnormality cause estimation unit estimates an abnormality cause based on the trend for the sensor value(s), and a fault site estimation database for holding the relationship between abnormality causes that may occur in the plant and sensor values for each of the trends.
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公开(公告)号：US11585281B2
公开(公告)日：2023-02-21
申请号：US17275522
申请日：2019-10-07
发明人： Yosuke Fujitomi , Tsukasa Ito
摘要： A control device includes a load fuel quantity calculation unit, an allowable fuel quantity calculation unit, a flow rate low value selection unit, a basic drive quantity calculation unit, a fuel deviation calculation unit, and a correction unit. The load fuel quantity calculation unit determines a load fuel quantity based on a required output. The allowable fuel quantity calculation unit determines an allowable fuel quantity to protect a gas turbine. The flow rate low value selection unit selects a minimum fuel quantity from among the determined fuel quantities. The basic drive quantity calculation unit determines a basic drive quantity of an air intake quantity regulator. The fuel deviation calculation unit determines a fuel deviation between the allowable fuel quantity and the minimum fuel quantity. The correction value calculation unit determines a correction value corresponding to the fuel deviation which is then used to correct the basic drive quantity.
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公开(公告)号：US11536197B2
公开(公告)日：2022-12-27
申请号：US16978049
申请日：2019-04-11
摘要： A valve opening degree determination device includes an object operating state acquisition unit configured to acquire an object operating state which is an operating state of a gas turbine before control, and a valve opening degree calculation unit configured to calculate the valve opening degree such that a disk cavity temperature after control is equal to or lower than a target temperature, based on the object operating state. The valve opening degree calculation unit is configured to determine an input value of the valve opening degree such that a prediction value of the disk cavity temperature is equal to or lower than the target temperature as the valve opening degree, based on a prediction model generated based on a plurality of previous data in which the operating state, the disk cavity temperature, and an actual opening degree of the cooling-air adjustment valve previously acquired are associated with each other.
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公开(公告)号：US11536162B2
公开(公告)日：2022-12-27
申请号：US17261641
申请日：2019-09-20
发明人： Shoki Yamashita , Takaaki Matsuo , Soichiro Tabata
摘要： An exhaust chamber of a steam turbine according to an embodiment includes an outer casing which includes an end wall part in an axial direction and an extension part extending upward in the axial direction from the end wall part, a first flow guide formed into an annular shape, the first flow guide forming an upstream region of a diffuser surface in a hub-side flow guide and being fixed to an upstream end portion of the extension part on a radially inner side of the diffuser surface, and a second flow guide formed into an annular shape, the second flow guide forming a downstream region of the diffuser surface at a position downstream of the first flow guide and on a radially outer side of the extension part, and being fixed to the extension part.
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6.发明申请公开(公告)号：US20220316401A1
公开(公告)日：2022-10-06
申请号：US17615895
申请日：2020-06-12
发明人： Yoshifumi OKAJIMA , Masahiko MEGA , Taiji TORIGOE , Atsushi MORIWAKI , Hiroshi MAKIGANO , Koichi TANIMOTO
摘要： The present invention provides a thermal barrier coated component, monitoring or evaluation of the soundness of which is able to be adequately carried out on the basis of the thermal boundary conditions that are detected by a sensor. A thermal barrier coated component according to the present invention comprises: a base material; a first bond coat layer that is a metal bonding layer formed on the base material; a sensor unit that comprises a sensor and a conductive wire, which are formed on the first bond coat layer; a second bond coat layer that is formed on the first bond coat layer so as to cover at least the sensor unit, while having a surface roughness higher than that of the first bond coat layer; and a top coat layer that is formed on the second bond coat layer.
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公开(公告)号：US11459914B2
公开(公告)日：2022-10-04
申请号：US17263326
申请日：2020-02-12
发明人： Tomohiko Takakusagi
IPC分类号： F01D25/28
摘要： Provided are a turbine rotor fixing device capable of easily fixing a turbine rotor in a radial direction and an axial direction, and a shipping method of a turbine module. A fixing device (30) of a turbine rotor (11) includes a radial direction fixing jig (32) provided in a gland part (21A) that seals a clearance between the turbine rotor (11) and a turbine casing disposed to cover a periphery of the turbine rotor (11), to fix relative movement of the turbine rotor (11) to the gland part (21A) in a radial direction, and an axial direction fixing jig (31) provided between the turbine rotor (11) and the gland part (21A), to fix relative movement of the turbine rotor (11) to the gland part (21A) in an axis (X) direction.
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公开(公告)号：US11428409B2
公开(公告)日：2022-08-30
申请号：US17274940
申请日：2019-09-26
发明人： Kei Inoue , Keijiro Saito , Yuichi Ichikawa
摘要： A combustor includes: a fuel nozzle for injecting fuel; a combustion liner surrounding a combustion space for combusting the fuel and having an internal passage having an outlet communicating with the combustion space; and an air-fuel mixture line, connected to an inlet of the internal passage of the combustion liner, for introducing an air-fuel mixture containing the fuel and compressed air to the internal passage. The combustion liner is configured to be cooled by the air-fuel mixture flowing through the internal passage.
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公开(公告)号：US20220235674A1
公开(公告)日：2022-07-28
申请号：US17617700
申请日：2020-08-18
发明人： Makoto Kondo , Katsuhisa Hamada
摘要： This steam turbine is provided with: a steam turbine rotor which extends in an axial direction; a pair of bearings which support the steam turbine rotor in such a way as to be capable of rotating about the axial direction; a steam turbine casing which encloses the steam turbine rotor between the pair of bearings; a casing support unit which supports the steam turbine casing from below; and a first heating unit: which is provided on the casing support unit and which is capable of heating the casing support unit.
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公开(公告)号：US20220223892A1
公开(公告)日：2022-07-14
申请号：US17709538
申请日：2022-03-31
发明人： Kuniyuki TAKAHASHI
IPC分类号： H01M8/0612 , H01M8/04089 , H01M8/04082 , H01M8/04664 , H01M8/04746
摘要： Provided is a fuel cell system that can prevent oxidation degradation of a fuel electrode, even in the case where a control unit stops abnormally. A fuel cell system (1) comprises an SOFC (10) that generates electricity through an electrochemical reaction between a reduction gas and an oxidant gas, a control unit (40) that controls the supply of the reduction gas and the oxidant gas to the SOFC, a detection unit (45) that detects a stopping of a normal signal of the control unit or detects an abnormal signal of the control unit transmitted from the control unit, and a maintenance unit (50) that keeps a fuel electrode of the SOFC in a reduced state according to a detection result from the detection unit. The maintenance unit includes a hydrogen supply system (51) that supplies hydrogen to the fuel electrode as the reduction gas.
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