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141. 发明专利

JP2002071400A FLUID-CONTROL DEVICE 失效
公开(公告)号：JP2002071400A
公开(公告)日：2002-03-08
申请号：JP2000255974
申请日：2000-08-25
申请人： TOKYO GAS CO LTD , TOSHIBA CORP
发明人： NUKUI KAZUMITSU , SUZUKI MAMORU , KOMAKI MICHINORI , TASHIRO TAKESHI , KON KAZUO , MAEDA IKUO , ISHINO HITOAKI , UYAMA HIROTO
IPC分类号： G01F1/00 , F17D3/01 , G01F3/22
摘要： PROBLEM TO BE SOLVED: To surely break a fluid channel by accurately capturing the rapid change in the fluid flow rate or the use of fluid in a short time, and accurately and rapidly detecting the abnormal working conditions of the fluid. SOLUTION: The fluid-control device comprises an operation control means 2, that reads the flow rate of fluid detected by a flow rate sensor 1 as the instantaneous flow rate measurement value of a prescribed time interval, performs the running averaging arithmetic processing to the instantaneous flow rate measurement value, and judges as to whether the working state of the fluid is normal, based on the running averaging arithmetic processing result, and outputs a break signal in the case of failure, and a break means 8 for breaking a fluid channel by receiving the break signal.

142. 发明专利

JP2001255193A GAS METER AND OPTICAL RADIO COMMUNICATION SYSTEM 失效
公开(公告)号：JP2001255193A
公开(公告)日：2001-09-21
申请号：JP2000069496
申请日：2000-03-13
申请人： TOKYO GAS CO LTD , TOSHIBA CORP
发明人： NUKUI KAZUMITSU , SUZUKI MAMORU , NAKAMURA MITSUHIRO , HAYASHI HITOSHI , KON KAZUO , MAEDA IKUO
IPC分类号： G01F3/22 , G01F1/00 , G01F15/06 , H04B10/00 , H04B10/116 , H04Q9/00
摘要： PROBLEM TO BE SOLVED: To provide a gas meter, capable of accurately communicating without making wrong connections, disconnections, connecting faults or the like using simple labor hours of a wiring operating and a connection by solving the problem of wrong connecting, disconnection, connection faults, incorrect setting changes or the like, in the case of reading data of shutting-off and warning reason occurring reasons or changing various type set values. SOLUTION: An LCD panel 71 for displaying the shutting-off and warning reasons by characters or numerical characters, so as to recognize intuitively from the outside, a light-emitting element 81 and a photodetector 82 for transmitting/receiving various type information to and from external handy terminal equipment 2 are unitized and provided at one position of an internal space, having a relative allowance in a window 7 on the front surface of an upper case 3 of the mater 1.

143. 发明专利

JP2003270021A STRAIGHTENER 审中-公开
公开(公告)号：JP2003270021A
公开(公告)日：2003-09-25
申请号：JP2002068564
申请日：2002-03-13
申请人： TOKYO GAS CO LTD , YAZAKI CORP
发明人： NUKUI KAZUMITSU , SETO MINORU , TASHIRO TAKESHI , KOMAKI MICHINORI , KOBAYASHI MASATOMO , USHIJIMA KAZUHIRO
IPC分类号： G01F1/00 , F15D1/02 , G01F3/22 , G01F15/00
摘要： PROBLEM TO BE SOLVED: To provide a straightener, whose measurement accuracy is high and which reduces the processing operation regarding a flow measurement is spite of being of a small size and to provide a gas meter. SOLUTION: A first mesh 15A and a second mesh 15B are arranged so as to sandwich straightening plates 14 on the way of a flow channel 53 in which a flow rate sensor 10 is arranged, and a third mesh 15C is arranged by keeping a prescribed interval on the upstream side from the first mesh 15A. The lengths of the straightening plate 14 before and after the flow rate sensor 10 are made mutually identical along the flow direction. COPYRIGHT: (C)2003,JPO

144. 发明专利

JP2003202258A GAS METER 审中-公开
公开(公告)号：JP2003202258A
公开(公告)日：2003-07-18
申请号：JP2002001538
申请日：2002-01-08
申请人： TOKYO GAS CO LTD
发明人： NUKUI KAZUMITSU , HAYASHI HITOSHI
IPC分类号： G01F3/22 , F23N5/18 , F23N5/24 , G01F1/00
摘要： PROBLEM TO BE SOLVED: To provide a gas meter capable of improving measuring accuracy on consumption of a fuel gas. SOLUTION: Three reed switches 121A to 121C are disposed on a movement route D of a magnet 14, thereby forming a flow measuring mechanism for the gas meter. When the magnet 14 moves along the movement route D in proportion to the flow of the gas, the flow of the gas is calculated based on flow pulse signals outputted from the respective reed switches 121A to 121C each time the magnet 14 passes thereby. Output time intervals of flow pulse signals outputted from the reed switches 121 are shorter than in a case where a single reed switch 121 (only 121A for example) is disposed along the movement route D, and the number of flow data calculated in the gas meter increases. This makes it possible to detect a relatively small change of flow in a large- capacity-type gas meter and to reduce measuring errors with respect to flow calculation. COPYRIGHT: (C)2003,JPO

145. 发明专利

JP2003156376A GAS WI MEASURING APPARATUS, GAS COMBUSTION FLOW MEASURING APPARATUS, AND GAS DENSITY MEASURING INSTRUMENT USED FOR THEM 审中-公开
公开(公告)号：JP2003156376A
公开(公告)日：2003-05-30
申请号：JP2001355900
申请日：2001-11-21
申请人： TOKYO GAS CO LTD
发明人： NUKUI KAZUMITSU , SETO MINORU
IPC分类号： G01F3/22 , G01F1/66 , G01F1/68 , G01F15/04 , G01N9/00 , G01N25/28
摘要： PROBLEM TO BE SOLVED: To provide a gas WI measuring apparatus, a gas combustion flow measuring apparatus and a gas density measuring instrument used for them which have a very simple structures, and enable high-precision measurement of a WI value, a gas combustion flow value, etc., without wasting a part of a gas. SOLUTION: A density sensor 3 is attached to a position, which is located inside a recessed subchamber 2 fitted with a partition wall 11, having an opening of a specified size for performing gas ventilation which faces a flow passage 1, and does not influence measurement practically by the flow of gas by ventilation. This density sensor 3 measures the density of gas flowing in the flow passage 1, without being practically influenced by the flow of the gas by ventilation. A WI computation portion 4 computes the value of WI of the gas flowing in the flow passage 1 at that time, on the basis of the value of the density.

146. 发明专利

JP2002156258A FLOWMETER AND FLOW PASSAGE CUTTING-OFF CONTROL METHOD 失效
公开(公告)号：JP2002156258A
公开(公告)日：2002-05-31
申请号：JP2000350731
申请日：2000-11-17
申请人： TOKYO GAS CO LTD
发明人： NUKUI KAZUMITSU , NISHI AKIFUMI , NAKAMURA MITSUHIRO
IPC分类号： G01F3/22
摘要： PROBLEM TO BE SOLVED: To provide a flowmeter capable of shortening the lighting period of a warning lamp which is caused by the leakage of an inner pipe to suppress the sudden consumption of a built-in battery. SOLUTION: A gas meter 10 is equipped with a cut-off valve 11 for closing or opening the flow passage of piping 1, a control unit 17 for controlling the on-off operation of the cut-off valve 11, a warning lamp 15 lighting in order to report the leakage or the like of the inner pipe generated within the piping 1, and a power supply part 16 having the built-in battery for supplying voltage to the control unit 17, the warning lamp 15 or the like. When the leakage of the inner pipe is generated, the control unit 17 allows the warning lamp 15 to light and closes the flow passage of the piping 1 by the cut-off valve 11. Thereafter, the control unit 17 inspects a gas leakage and, when there is no gas leakage in the piping 1, the warning lamp 15 is allowed to put out lights and the flow passage is opened by the cut-off valve 11.

147. 发明专利

JP2001296166A FLOW RATE MEASUREMENT METHOD, FLOW RATE-MEASURING DEVICE, AND ELECTRONIC GAS METER 失效
公开(公告)号：JP2001296166A
公开(公告)日：2001-10-26
申请号：JP2000112263
申请日：2000-04-13
申请人： YAZAKI CORP , TOKYO GAS CO LTD
发明人： TANAKA SHINICHI , NUKUI KAZUMITSU , SETO MINORU , KOBAYASHI MASATOMO
IPC分类号： G01F3/22 , G01F1/00 , G01F1/68 , G01F15/06
摘要： PROBLEM TO BE SOLVED: To provide a flow rate-measuring device for reducing the power consumption, without reducing flow rate measurement accuracy by reducing wasteful consumption of power. SOLUTION: A passage flow rate measurement means 5a-1 can be operated in either measurement mode, that is selected out of a first measurement mode for measuring passage flow rate, based on physical quantity by measuring the physical quantity that changes according to the flow velocity of gas in a gas channel at every second prescribed time that is shorter than the first prescribed time, and a second measurement mode for measuring the passage flow rate based on the average value of the physical quantity which is measured plural number of times by intermittently measuring the physical quantity at every second prescribed time plural times. A measurement mode selection means 5a-3 selects the first and second measurement modes, when it detects the absence of a pulsating current by a pulsating current detection means 5a-2 and the presence of a pulsating current, respectively, thus enabling passage flow rate measurement means 5a-1 to measure the passage flow rate by the selected measurement mode.

148. 发明专利

JP2001296156A FLOW RATE MEASURING DEVICE AND ELECTRONIC FLOWMETER 失效
公开(公告)号：JP2001296156A
公开(公告)日：2001-10-26
申请号：JP2000112260
申请日：2000-04-13
申请人： YAZAKI CORP , TOKYO GAS CO LTD
发明人： ODA KIYOSHI , ANZAI MITSUYOSHI , KIMURA OSAMU , NUKUI KAZUMITSU , SETO MINORU , KOBAYASHI MASATOMO
IPC分类号： G01F1/00 , F17D3/18 , G01F1/68 , G01F3/22
摘要： PROBLEM TO BE SOLVED: To provide a flow rate measuring device for further reducing the power consumption, without bringing about a decrease in a flow rate measuring accuracy. SOLUTION: A flowing speed sensor 1 outputs an analog flowing speed signal, in response to a flowing speed of a fluid in a channel. A drive means 3 continuously drives the sensor 1. An integrating means 7 integrates the analog signal output from the sensor 1 and outputs an analog integrated value signal, in response to the integrated value. Thus, the passing flow rate of the fluid passing the channel is measured, based on the analog integrated value signal from the means 7.

149. 发明专利

JP2001296155A ELECTRONIC INTEGRATING FLOWMETER 失效
公开(公告)号：JP2001296155A
公开(公告)日：2001-10-26
申请号：JP2000111160
申请日：2000-04-12
申请人： YAZAKI CORP , TOKYO GAS CO LTD
发明人： YAMAURA MICHIAKI , NUKUI KAZUMITSU , SETO MINORU , KOBAYASHI MASATOMO
IPC分类号： G01F1/00 , G01F1/68 , G01F3/22
摘要： PROBLEM TO BE SOLVED: To provide an electronic integrating flowmeter eliminating an integration error due to an unevenness and obviating the waste of power consumption, by deciding whether a flow rate calculation is to be conducted or not by considering the output of a flow sensor which is generated, when a flow rate is '0', and omitting the calculation when the rate is '0'. SOLUTION: A flow sensor 10 provided at a fluid supply passage is intermittently driven at every prescribed time to output a signal, in response to a flowing speed of a fluid. An arithmetic means 20-2 calculates a passing flow rate, based on the output of the sensor fetched by a measuring means 20-1, and integrates the calculated passing flow rate to obtain an integrated flow rate. The measuring means decides a prescribed width with a value corresponding to a mean value of the outputs of the sensor, when the passing flow rate is '0' as the center, as an dead zone and hence eliminates calculation of the passing flow rate by the arithmetic means, when the captured output of the sensor falls within the range of the dead zone.

150. 发明专利

JP2001221670A FLOW RATE MEASURING METHOD AND FLOWMETER 失效
公开(公告)号：JP2001221670A
公开(公告)日：2001-08-17
申请号：JP2000333189
申请日：2000-10-31
申请人： YAZAKI CORP , TOKYO GAS CO LTD
发明人： HARADA TOSHIHIRO , NUKUI KAZUMITSU , SETO MINORU , KOBAYASHI MASATOMO
IPC分类号： G01F3/22 , G01F1/696
摘要： PROBLEM TO BE SOLVED: To suppress exhaustion state of a battery which is a power supply to the utmost, while ensuring necessary sensitivity in a flowmeter using a flow sensor to measure the flow rate of gas. SOLUTION: In the flowmeter equipped with the flow sensor 3, generating the electromotive force of voltage corresponding to the power consumed by the heater 34, arranged in a fluid flow channel 17 and the flow velocity of a fluid in thermopiles 32, 33, a power supply means A for intermittently supplying power to the heater 34 and a flow velocity measuring means 13A for measuring the flow velocity of the fluid, on the basis of power supplied at each time when power is supplied to the heater 34 and the voltage generated in the thermopiles 32, 33 and operated by a battery which is a power supply to measure the flow rate of the fluid based on the flow velocity measured by the flow velocity measuring means 13A, the power supply means A supplies prescribed power to the heater 34, when the flow velocity measuring means 13 measures flow velocity exceeding prescribed flow velocity V0 and supplies power of less than the prescribed power to the heater 34, when the flow velocity measuring means 13A measures flow velocity below the prescribed flow velocity V0.

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