Patents by Inventor Hitoi Ono
Hitoi Ono 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).
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Publication number: 20180247721Abstract: A plant operation assistance system includes: a data obtaining unit-configured to obtain monitoring data indicating state quantity of a plant, the state quantity being detected by a sensor; an identifying unit configured to identify, based on the state quantity, a probability distribution of the monitoring data; a model generation unit configured to generate, based on a plant parameter composed from a database including design information of the plant, a stochastic model of the plant; a data processing unit configured to assign the probability distribution to the monitoring data obtained by the data obtaining unit; and a prediction unit configured to input the monitoring data assigned with the probability distribution, into the stochastic model, and predicts a state of the plant.Type: ApplicationFiled: January 20, 2016Publication date: August 30, 2018Applicant: MITSUBISHI HEAVY INDUSTRIES, LTD.Inventors: Hitoi Ono, Satoshi Hanada, Eisuke Noda
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Patent number: 9689730Abstract: A required-circulated-refrigerant flow-rate calculating portion provided in a chilled-water flow-rate estimation calculation portion calculates an evaporator exchanged heat quantity exchanged between a refrigerant and chilled water at an evaporator based on a planned chilled-water-flow-rate value and a measured value of the temperature of the chilled water flowing in the evaporator, and calculates an evaporator-refrigerant flow rate based on that evaporator exchanged heat quantity.Type: GrantFiled: February 16, 2012Date of Patent: June 27, 2017Assignee: MITSUBISHI HEAVY INDUSTRIES, LTD.Inventors: Minoru Matsuo, Kenji Ueda, Toshihiko Niinomi, Hitoi Ono
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Patent number: 9541318Abstract: A flow rate of a heat transfer medium is computed without a flow meter. In a control apparatus (30), a storing portion (36) stores an aerodynamic characteristic map indicating a line causing a rotating stall and lines showing a sonic velocity in a refrigerant sucked in by a compressor (12) on a map displaying a variable ? reflecting a suction volume of the compressor (12) and a variable ? reflecting a head of the compressor (12); a estimation portion of chilled water flow rate (30b) computes the variable ?, derives the variable ? according to the variable ? from the map, computes a heat amount exchanged between the refrigerant and the chilled water in an evaporator (24) based on the suction volume of the compressor (12) according to the computed variable ?, and computes the flow rate of the chilled water based on the heat amount.Type: GrantFiled: February 17, 2012Date of Patent: January 10, 2017Assignee: MITSUBISHI HEAVY INDUSTRIES, LTD.Inventors: Minoru Matsuo, Kenji Ueda, Toshihiko Niinomi, Hitoi Ono
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Patent number: 9372944Abstract: A numerical analysis device executes: Step 102 of selecting a fluidic device model and a pipe model used for transient analysis from among fluidic device models and pipe models that are located between a start point and an end point set in the pipeline network model constructed as a 3D model of a pipeline network that includes fluidic devices and pipes; Step 104 of dividing the selected fluidic device model and pipe model into volume elements and into junction elements; Step 106 of deriving volumes of the respective volume elements obtained and pressure loss coefficients corresponding to the respective junction elements, based on the shape of the fluidic device model, a shape of the pipe model, and a physical quantities of the fluid, of associating the volumes with the volume elements, and of associating the pressure loss coefficients with the junction elements.Type: GrantFiled: June 8, 2011Date of Patent: June 21, 2016Assignee: MITSUBISHI HEAVY INDUSTRIES, LTD.Inventors: Hitoi Ono, Toshiharu Nakabayashi
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Patent number: 9334800Abstract: To provide a method of controlling a turbine equipment and a turbine equipment capable of carrying out a starting operation of controlling a load applied to a speed reducing portion while complying with a restriction imposed on an apparatus provided at a turbine equipment. The invention is characterized in including a speed accelerating step (S1) of increasing a revolution number by driving to rotate a compressing portion and a turbine portion by a motor by way of a speed reducing portion, a load detecting step (S2) of detecting a load applied to the speed reducing portion by a load detecting portion, and a bypass flow rate controlling step (S3) of increasing a flow rate of a working fluid bypassed from a delivery side to a suction side of the compressing portion when an absolute value of the detected load is equal to or smaller than an absolute value of a predetermined value and reducing the flow rate of the bypassed working fluid when equal to or larger than the absolute value of the predetermined value.Type: GrantFiled: March 27, 2009Date of Patent: May 10, 2016Assignees: MITSUBISHI HEAVY INDUSTRIES, LTD., PEBBLE BED MODULAR REACTOR (PTY) LIMITEDInventors: Hitoi Ono, Takashi Sonoda, Naoto Tochitani, Makoto Kato, Masahide Umaya, Fuminori Fujii
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Patent number: 9243566Abstract: To provide a method of controlling a turbine equipment and a turbine equipment capable of carrying out a starting operation of controlling a load applied to a speed reducing portion while complying with a restriction imposed on an apparatus provided at a turbine equipment. The invention is characterized in including a temperature elevating step (S1) of elevating a temperature of a working fluid flowing to the turbine portion, a flow rate increasing step (S2) of increasing a flow rate of a working fluid bypassed from a delivery side to a suction side of the compressing portion when a temperature of the working fluid flowing to the turbine portion is elevated by a heat source portion, and a flow rate reducing step (S3) of reducing the flow rate of the bypassing working fluid after an elapse of a predetermined time period after increasing the flow rate of the bypassing working fluid.Type: GrantFiled: March 27, 2009Date of Patent: January 26, 2016Assignees: MITSUBISHI HEAVY INDUSTRIES, LTD., PEBBLE BED MODULAR REACTOR (PTY) LIMITEDInventors: Hitoi Ono, Takashi Sonoda, Naoto Tochitani, Makoto Kato, Masahide Umaya, Fuminori Fujii
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Publication number: 20130238258Abstract: A required-circulated-refrigerant flow-rate calculating portion provided in a chilled-water flow-rate estimation calculation portion calculates an evaporator exchanged heat quantity exchanged between a refrigerant and chilled water at an evaporator based on a planned chilled-water-flow-rate value and a measured value of the temperature of the chilled water flowing in the evaporator, and calculates an evaporator-refrigerant flow rate based on that evaporator exchanged heat quantity.Type: ApplicationFiled: February 16, 2012Publication date: September 12, 2013Applicant: MITSUBISHI HEAVY INDUSTRIES, LTD.Inventors: Minoru Matsuo, Kenji Ueda, Toshihiko Niinomi, Hitoi Ono
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Publication number: 20130180272Abstract: The degree-of-opening of an expansion valve is set to an appropriate degree-of-opening regardless of the load and external conditions for a heat-source unit. In a turbo refrigerator including a compressor that compresses a refrigerant; a condenser that condenses a compressed refrigerant by means of cooling water; an evaporator that evaporates a condensed refrigerant and also performs heat exchange between this refrigerant and cold water; and an expansion valve that causes a liquid-phase refrigerant retained in the condenser to expand, a expansion-valve control device (40) controls a degree-of-opening of the expansion valve (18).Type: ApplicationFiled: March 15, 2012Publication date: July 18, 2013Applicant: MITSUBISHI HEAVY INDUSTRIES, LTD.Inventors: Hitoi Ono, Kenji Ueda, Noriyuki Matsukura, Minoru Matsuo
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Publication number: 20130174601Abstract: A flow rate of a heat transfer medium is computed without a flow meter. In a control apparatus (30), a storing portion (36) stores an aerodynamic characteristic map indicating a line causing a rotating stall and lines showing a sonic velocity in a refrigerant sucked in by a compressor (12) on a map displaying a variable ? reflecting a suction volume of the compressor (12) and a variable ? reflecting a head of the compressor (12); a estimation portion of chilled water flow rate (30b) computes the variable ?, derives the variable ? according to the variable ? from the map, computes a heat amount exchanged between the refrigerant and the chilled water in an evaporator (24) based on the suction volume of the compressor (12) according to the computed variable ?, and computes the flow rate of the chilled water based on the heat amount.Type: ApplicationFiled: February 17, 2012Publication date: July 11, 2013Applicant: MITSUBISHI HEAVY INDUSTRIES, LTD.Inventors: Minoru Matsuo, Kenji Ueda, Toshihiko Niinomi, Hitoi Ono
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Publication number: 20130046527Abstract: A numerical analysis device executes: Step 102 of selecting a fluidic device model and a pipe model used for transient analysis from among fluidic device models and pipe models that are located between a start point and an end point set in the pipeline network model constructed as a 3D model of a pipeline network that includes fluidic devices and pipes; Step 104 of dividing the selected fluidic device model and pipe model into volume elements and into junction elements; Step 106 of deriving volumes of the respective volume elements obtained and pressure loss coefficients corresponding to the respective junction elements, based on the shape of the fluidic device model, a shape of the pipe model, and a physical quantities of the fluid, of associating the volumes with the volume elements, and of associating the pressure loss coefficients with the junction elements.Type: ApplicationFiled: June 8, 2011Publication date: February 21, 2013Applicant: MITSUBISHI HEAVY INDUSTRIES, LTD.Inventors: Hitoi Ono, Toshiharu Nakabayashi
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Publication number: 20110044794Abstract: To provide a method of controlling a turbine equipment and a turbine equipment capable of carrying out a starting operation of controlling a load applied to a speed reducing portion while complying with a restriction imposed on an apparatus provided at a turbine equipment. The invention is characterized in including a speed accelerating step (S1) of increasing a revolution number by driving to rotate a compressing portion and a turbine portion by a motor by way of a speed reducing portion, a load detecting step (S2) of detecting a load applied to the speed reducing portion by a load detecting portion, and a bypass flow rate controlling step (S3) of increasing a flow rate of a working fluid bypassed from a delivery side to a suction side of the compressing portion when an absolute value of the detected load is equal to or smaller than an absolute value of a predetermined value and reducing the flow rate of the bypassed working fluid when equal to or larger than the absolute value of the predetermined value.Type: ApplicationFiled: March 27, 2009Publication date: February 24, 2011Applicants: MITSUBISHI HEAVY INDUSTRIES, LTD., PEBBLE BED MODULAR REACTOR (PTY) LIMITEDInventors: Hitoi Ono, Takashi Sonoda, Naoto Tochitani, Makoto Kato, Masahide Umaya, Fuminori Fujii
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Publication number: 20110027066Abstract: To provide a method of controlling a turbine equipment and a turbine equipment capable of carrying out a starting operation of controlling a load applied to a speed reducing portion while complying with a restriction imposed on an apparatus provided at a turbine equipment. The invention is characterized in including a temperature elevating step (S1) of elevating a temperature of a working fluid flowing to the turbine portion, a flow rate increasing step (S2) of increasing a flow rate of a working fluid bypassed from a delivery side to a suction side of the compressing portion when a temperature of the working fluid flowing to the turbine portion is elevated by a heat source portion, and a flow rate reducing step (S3) of reducing the flow rate of the bypassing working fluid after an elapse of a predetermined time period after increasing the flow rate of the bypassing working fluid.Type: ApplicationFiled: March 27, 2009Publication date: February 3, 2011Applicants: MITSUBISHI HEAVY INDUSTRIES, LTD., PEBBLE BED MODULAR REACTOR (PTY) LIMITEDInventors: Hitoi Ono, Takashi Sonoda, Naoto Tochitani, Makoto Kato, Masahide Umaya, Fuminori Fujii
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Patent number: 7155897Abstract: A combustion temperature high speed detection device is provided with a phase lead processing portion, thereby canceling out a detection lag of a temperature detector, and detecting the combustion gas temperature of a combustor at a high speed. The combustion temperature high speed detection device is also provided with a first-order lag filtering portion with a time constant of 0.25 second, a phase lag processing portion with a time constant of 10 seconds, a temperature change filtering portion with a cutoff frequency of 2 to 3 Hz, and a disturbance filtering portion including first-order lag filtering portions with different time constants and a high value selecting portion. Thus, high speed detection of the combustion gas temperature more suitable for a gas turbine system can be performed.Type: GrantFiled: June 24, 2004Date of Patent: January 2, 2007Assignee: Mitsubishi Heavy Industries, Ltd.Inventors: Shinsuke Nakamura, Fuminori Fujii, Shinya Uchida, Kozo Toyama, Hitoi Ono
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Publication number: 20050126183Abstract: A combustion temperature high speed detection device is provided with a phase lead processing portion, thereby canceling out a detection lag of a temperature detector, and detecting the combustion gas temperature of a combustor at a high speed. The combustion temperature high speed detection device is also provided with a first-order lag filtering portion with a time constant of 0.25 second, a phase lag processing portion with a time constant of 10 seconds, a temperature change filtering portion with a cutoff frequency of 2 to 3 Hz, and a disturbance filtering portion including first-order lag filtering portions with different time constants and a high value selecting portion. Thus, high speed detection of the combustion gas temperature more suitable for a gas turbine system can be performed.Type: ApplicationFiled: June 24, 2004Publication date: June 16, 2005Applicant: MITSUBISHI HEAVY INDUSTRIES, LTD.Inventors: Shinsuke Nakamura, Fuminori Fujii, Shinya Uchida, Kozo Toyama, Hitoi Ono