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71. 发明专利

JPH07316568A FACILITY FOR REDUCING AND CONTROLLING CARBON MONOXIDE CONCENTRATION IN CITY GAS AND METHOD FOR REDUCING AND CONTROLLING CARBON MONOXIDE GAS CONCENTRATION 失效
公开(公告)号：JPH07316568A
公开(公告)日：1995-12-05
申请号：JP11709894
申请日：1994-05-30
申请人： TOKYO GAS CO LTD
发明人： SETO MINORU
IPC分类号： C10K3/04
摘要： PURPOSE:To provide a facility for continuously reducing and controlling carbon monoxide concentration in city gas and a method for reducing and controlling carbon monoxide gas concentration. CONSTITUTION:This facility is provided with a gas reformer 1 to perform the catalytic decomposition of a raw material such as LPG or naphtha and a carbon monoxide converter 2 to produce carbon monoxide from the produced gas. The value of selected control parameter is determined from the concentration signal of a carbon monoxide concentration meter 19 by a control parameter setter 20 based on (1) the ratio of gasification raw material to added steam, (2) the preset temperature of gasification reaction and (3) the flow rate of gas during the reaction. A raw material flow control valve 4, a steam flow control valve 8 or a fuel control valve 12 is controlled based on the obtained parameter value to reduce and control the concentration of carbon monoxide.

72. 发明专利

JPH07294467A CONTINUOUS COMPOSITION MEASURING METHOD FOR MIXED GAS WHOSE COMPONENT IS KNOWN, MEASURING PIPE FOR CONTINUOUS COMPOSITION MEASUREMENT AND CONTINUOUS COMPOSITION MEASURING DEVICE 失效
公开(公告)号：JPH07294467A
公开(公告)日：1995-11-10
申请号：JP8319594
申请日：1994-04-21
申请人： TOKYO GAS CO LTD
发明人： TAGUCHI FUJITAKA , SETO MINORU , AOKI HIROSHI
IPC分类号： G01N25/18
摘要： PURPOSE:To continuously measure the composition of mixed gas whose component is known by a simple device. CONSTITUTION:A measuring pipe 2 is arranged in mixed gas supply piping 1 so as to cross a mixed gas flow, and a mixed gas inflow port 9 is arranged in the measuring pipe, and an outflow port 10 is arranged in a position separated from the inflow port, and heating elements and temperature sensing elements are alternately arranged in plural rows in the mixed gas flowing direction (f) on an inner wall reaching the outflow port from the inflow port, and a sensor part is constituted, and a part of mixed gas flowing in the supply piping is flowed in the measuring pipe from the inflow port, and is passed through the sensor part, and after a temperature rise in the mixed gas when a constant quantity of heat is added by the heating elements in the sensor part is measured by the upstream side and downstream side temperature sensing elements on plural temperature levels corresponding to the respective heating elements, it is flowed out of the outflow port, and is joined to a main flow of the mixed gas in the supply piping. A measured value by such measurement is substituted in a linear algebraic expression disclosed in a bulletin of a Patent Disclosure Heisei 4-776655 issue, and the composition is calculated.

73. 发明专利

JPH07243930A INSTALLATION MECHANISM FOR DIFFERENTIAL PRESSURE TRANSMITTER AND VALVE UNIT FOR INSTALLATION 失效
公开(公告)号：JPH07243930A
公开(公告)日：1995-09-19
申请号：JP3729494
申请日：1994-03-08
申请人： TOKYO GAS CO LTD , FUJIKIN KK
发明人： NUKUI KAZUMITSU , SETO MINORU , OMICHI KUNIHIKO
IPC分类号： G01F1/34 , F16K11/00 , F16K11/044 , G01L13/00 , G01L19/02
摘要： PURPOSE:To provide an installation mechanism of a differential pressure transmitter improving a valve unit for installation and facilitating the switching between the differential pressure measurement and zero point adjustment. CONSTITUTION:This installation mechanism for a differential pressure transmitter 3 is provided with a high-pressure side path 4 formed between the high pressure side (a) of a differential pressure measuring line 1 and one pressure guide side (c) of the differential pressure transmitter 3, a low-pressure side path 5 formed between the low pressure side (b) of the differential pressure measuring line 1 and the other pressure guide side (d) of the differential pressure transmitter 3, and a pressure equalizing path 6 formed between the high-pressure side path 4 and the low-pressure side path 5. A valve mechanism constituted of a three-way valve and a pair of interlockable valves is provided on the low-pressure side path 5 and the pressure equalizing path 6 respectively, and individual valve mechanisms are interlocked to be operated in opposite opening/ closing states.

74. 发明专利

JPH07113802A COMBUSTION SPEED MEASURING METHOD OF LOW CALORIE GAS GROUP 失效
公开(公告)号：JPH07113802A
公开(公告)日：1995-05-02
申请号：JP26198893
申请日：1993-10-20
申请人： TOKYO GAS CO LTD
发明人： SETO MINORU
IPC分类号： G01N33/22 , G01N27/416
摘要： PURPOSE:To continuously measure a combustion speed of a low calorie gas group by a simple device. CONSTITUTION:A concentration of hydrogen of a low calorie gas flowing in a low calorie gas-supplying line is continuously measured so that a combustion speed is calculated in accordance with a mutual relationship between the concentration of hydrogen and the combustion speed. Therefore, it is possible to continuously measure the combustion speed of the low calorie gas and utilize the measured output to continuously control the combustion. The device using the title method has a simple structure and the handling is easy. The daily maintenance is also easy and the price is markedly reduced.

75. 发明专利

JPH06341946A GAS DETECTOR 失效
公开(公告)号：JPH06341946A
公开(公告)日：1994-12-13
申请号：JP12967193
申请日：1993-05-31
申请人： ANDO ELECTRIC , TOKYO GAS CO LTD
发明人： ADACHI SHOJI , MORI TORU , SETO MINORU
IPC分类号： G01J3/42 , G01J3/427 , G01N21/27
摘要： PURPOSE:To provide a gas detector which is stable and realizes high precision, enables the detection of gas having low concentration, and can detect several kinds of gases at a time. CONSTITUTION:Output of a light receiving device 5 which receives optical beam B1 is divided into the lights each having wavelength lambda0 to lambdan by a wavelength selection light divider 8, and reference light having wavelength lambda0 and each component of wavelength lambda1 to lambdan which is light absorbing wavelength of measured gas G1 to Gn are supplied to a wavelength synthesis device 11 via an optical fiber 7 and dummy fibers D1 to Dn, respectively, to synthesize wavelength. On this occasion, each component of wavelength lambda1 to lambdan is delayed by dummy fibers D1 to Dn by delay time t1 to tn. Next, levels of detection signals which correspond to each wavelength lambda0 to lambdan are detected sequentially, and presence and concentration of the measured gas G1 to Gn are judged at a time in accordance with each level in a signal processing circuit 9.

76. 发明专利

JPH0694705A METHOD FOR MEASURING COMBUSTION RATE OF CITY GAS 失效
公开(公告)号：JPH0694705A
公开(公告)日：1994-04-08
申请号：JP3537692
申请日：1992-02-21
申请人： TOKYO GAS CO LTD , NEW COSMOS ELECTRIC CO
发明人： NUKUI KAZUMITSU , SETO MINORU , IWAI NOBUO
IPC分类号： G01N21/37 , G01N27/27 , G01N33/22
摘要： PURPOSE:To measure the combustion rate of city gas continuously by distribution the rate of total amount of carbon hydride other than methane into butane and propane depending on whether the flammable gas which is mixed for adjusting the amount of heat is butane or propane and then calculating the index of a specific combustion rate according to each ratio of gases whose combustion rates are to be calculated. CONSTITUTION:A hydrogen sensor 4 and an oxygen sensor 5 are installed at a measurement line 3 and an infrared ray type gas sensor 6 is constituted at the downstream side. Each ratio of gases whose combustion rates are to be calculated which are measured by the sensor 4, 5, and 6 is input to an operation means 1 utilizing a microcomputer etc., thus obtaining an index MCP of combustion rate. The ratio between butane and propane is set to the operation means by a setting means 12 according to whether a flammable gas to be mixed by adjustment of amount of heat is butane or propane. Therefore, the operation means 11 allocates the total amount of carbon hydride other than methane measured by a carbon hydride sensor part 10 to butane and propane and then the index of a specific combustion rate is calculated from each ratio between these and other gases whose combustion rate to be calculated.

77. 发明专利

JPH0666788A MEASURING INSTRUMENT FOR COMBUSTION SPEED OF CITY GAS 失效
公开(公告)号：JPH0666788A
公开(公告)日：1994-03-11
申请号：JP2169892
申请日：1992-01-10
申请人： TOKYO GAS CO LTD , NEW COSMOS ELECTRIC CO
发明人： NUKUI KAZUMITSU , SETO MINORU , IWAI NOBUO
IPC分类号： G01N25/50 , G01N27/00 , G01N27/12 , G01N33/22
摘要： PURPOSE:To continuously measure the combustion speed of a supplied gas by installing a carbon dioxide sensor, oxygen sensor, and semiconductor gas sensor group to a measurement line and measuring the proportions of carbon dioxide, oxygen, and other gases to be subjected to combustion speed calculation to the supplied gas. CONSTITUTION:The proportions of carbon dioxide and oxygen to a gas which is branched from a city gas supplying line 1 and flows in a measurement line 3 are measured with sensors 4 and 5 in the same state. Then, after the gas is mixed with air through an air mixing section 6, the proportions of gases to be subjected to combustion speed calculation other than carbon dioxide and oxygen are measured by means of a semiconductor gas sensor group 7. Thereafter, an arithmetic means 12 continuously calculates a prescribed combustion speed index from the measured proportions of the gases to be subjected to combustion speed calculation with little time lag.

78. 发明专利

JPS634836A METHOD FOR DENITRATING COMBUSTION EXHAUST GAS FROM COKE OVEN 失效
公开(公告)号：JPS634836A
公开(公告)日：1988-01-09
申请号：JP14716486
申请日：1986-06-25
申请人： TOKYO GAS CO LTD , MITSUBISHI KAKOKI KK
发明人： IIDA YOSHIO , ITO MASAKUNI , SETO MINORU , MORITO MASARU , HATTORI HIROSHI
IPC分类号： B01D53/56 , B01D53/34 , B01D53/74 , B01D53/94
摘要： PURPOSE:To control the amt. of ammonia to be introduced by separating the time when nitrogen oxides are rapidly decreased immediately after the switching of burners and the time when nitrogen oxides are rapidly increased with the lapse of time, and introducing a specified amt. of ammonia into the exhaust gas in accordance with each section. CONSTITUTION:The combustion exhaust gas is introduced from the top of a reactor 4 and brought into contact with catalyst. Consequently, the nitrogen compds. in the exhaust gas are reduced to gaseous nitrogen by ammonia, and the gas is discharged into the atmosphere from a stack 5 through the bottom of the reactor 4. A signal from the switching master timer of the coke oven is inputted into a computing element C, the flow rate of ammonia is calculated by the linear function of the time after switching, the value is inputted to a flow indicating controller FIC, and the standard time for the switching of burners is obtained. The flow rate of ammonia is successively calculated in this way in accordance with each section, and the value is inputted to the flow indicating controller.

79. 发明专利

JP2003227740A FLOW MEASURING APPARATUS AND GAS METER 审中-公开
公开(公告)号：JP2003227740A
公开(公告)日：2003-08-15
申请号：JP2002025617
申请日：2002-02-01
申请人： TOKYO GAS CO LTD
发明人： SETO MINORU
IPC分类号： G01F1/00 , G01F1/72 , G01F3/22
摘要： PROBLEM TO BE SOLVED: To provide a flow measuring apparatus in which an error caused by compressional waves or flow waves is not picked up by a measuring sensor, even when the compressional waves or the flow waves such as pulsations or swells are generated in a fluid as a measuring object, and by which a flow rate can be measured always precisely. SOLUTION: A fixation end member 20 which is e.g. in a check valve shape or the like used to form a node as a wave motion by the compressional waves or the flow waves such as the pulsations or the swells generated in the fluid such as a gas or the like, as the measuring object is installed on the downstream side (or also the upstream side is possible) of the measuring sensor 3. The node (a state that a vibration displacement as a longitudinal wavelike wave motion is nearly zero) by the compressional waves or the flow waves in the fluid as the measuring object is formed in a position in which the member 20 is installed. The flow rate is measured by the measuring sensor 3 arranged at a distance near the node. COPYRIGHT: (C)2003,JPO

80. 发明专利

JP2002286519A THERMAL FLOW VELOCITY SENSOR 失效
公开(公告)号：JP2002286519A
公开(公告)日：2002-10-03
申请号：JP2001089565
申请日：2001-03-27
申请人： TOKYO GAS CO LTD , YAZAKI CORP
发明人： KOBAYASHI MASATOMO , SETO MINORU , OKAMOTO YASUHIRO
IPC分类号： G01P5/10 , G01F1/688 , G01F1/692
摘要： PROBLEM TO BE SOLVED: To provide a thermal flow velocity sensor with enhanced measurement accuracy by making it possible to obtain, over a wide flow velocity range, a signal sharply changing with changes in flow velocity, thereby improving linearity. SOLUTION: This thermal flow velocity sensor is equipped with thermal elements 13 having heat-sensing parts for sensing temperature and generating electrical signals according to temperatures sensed by the heat-sensing parts and Peltier elements 14 having exothermic parts 4A and endothermic parts 4B. The exothermic parts and endothermic parts of the Peltier elements are parallelized with the heat-sensing parts 3A and 3B of the thermal elements, respectively, and they are arranged along the flowing direction of a fluid.

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