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1. 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.

2. 发明专利

AU2003257601A8 Straightening device 未知
公开(公告)号：AU2003257601A8
公开(公告)日：2004-04-30
申请号：AU2003257601
申请日：2003-08-29
申请人： TOKYO GAS CO LTD , TAKENAKA SEISAKUSHO CO LTD , YAMATAKE CORP
发明人： ISHITANI SATOSHI , YAO TAKASHI , TAMURA HIROSHI , NUKUI KAZUMITSU , KOMAKI MITSUNORI , TASHIRO TAKASHI , OSHIMA EIICHI
IPC分类号： G01F1/00 , F15D1/02 , G01F15/12 , G01P5/00

3. 发明专利

CA2310050A1 FLOWMETER 未知
公开(公告)号：CA2310050A1
公开(公告)日：1999-06-24
申请号：CA2310050
申请日：1998-10-16
申请人： TOKYO GAS CO LTD
发明人： NUKUI KAZUMITSU , YAMADA KAZUHIRO , KATO HIDEO , TASHIRO KEN , KOMAKI MITUNORI , MATUSHITA MASAHIKO
IPC分类号： G01F1/68 , G01F7/00 , G01F1/00
摘要： A flowmeter capable of measuring an accurate flow rate over a wide flow rate range. A measurement range (15) for a small flow rate and a measurement range (16) for a large flow rate are determined inside a flow path (13) of a piping (10). Distributing strainers (14) for distributing the flow of a gas (20) are disposed inside the measurement range (15) for a small flow rate by dividing the flow path (13) into a plurality of small flow paths (14A). A mean flow velocity of the gas (20) flowing through each of a plurality of small flow paths (14A) becomes substantially equal. A part of the gas (20) reaches nozzles (22a, 22b) erected across flow velocity sensors (15a, 15b) for a small flow rate and is accelerated by the operation of these nozzles. The flow velocity sensors (15a, 15b) inside the measurement range (15) output signals corresponding to the flow velocity of the gas (20) passed through the small flow path (14a) and accelerated by the nozzles (22a, 22b) in the small flow rate range. Flow velocity sensors (16a, 16b) for a large flow rate in the measurement range (16) output signals corresponding to the flow velocity of the gas (20) in the large flow rate range.

4. 发明公开

EP1041367A4 FLOWMETER 审中-公开
标题翻译： DURCHFLUSSMESSER
公开(公告)号：EP1041367A4
公开(公告)日：2005-08-17
申请号：EP98947909
申请日：1998-10-16
申请人： TOKYO GAS CO LTD
发明人： NUKUI KAZUMITSU , KATO HIDEO , TASHIRO KEN , KOMAKI MITUNORI , MATUSHITA MASAHIKO , YAMADA KAZUHIRO
IPC分类号： G01F1/68 , G01F7/00 , G01F1/00
CPC分类号： G01F7/00
摘要： A flowmeter capable of measuring an accurate flow rate over a wide flow rate range. A measurement range (15) for a small flow rate and a measurement range (16) for a large flow rate are determined inside a flow path (13) of a piping (10). Distributing strainers (14) for distributing the flow of a gas (20) are disposed inside the measurement range (15) for a small flow rate by dividing the flow path (13) into a plurality of small flow paths (14A). A mean flow velocity of the gas (20) flowing through each of a plurality of small flow paths (14A) becomes substantially equal. A part of the gas (20) reaches nozzles (22a, 22b) erected across flow velocity sensors (15a, 15b) for a small flow rate and is accelerated by the operation of these nozzles. The flow velocity sensors (15a, 15b) inside the measurement range (15) output signals corresponding to the flow velocity of the gas (20) passed through the small flow path (14a) and accelerated by the nozzles (22a, 22b) in the small flow rate range. Flow velocity sensors (16a, 16b) for a large flow rate in the measurement range (16) output signals corresponding to the flow velocity of the gas (20) in the large flow rate range.
摘要翻译：一种流量计，能够在宽的流量范围内测量准确的流量。在管道（10）的流路（13）内确定用于较小流量的测量区域（15）和用于较大流量的测量区域（16）。用于调节气体（20）流动的调节过滤器（14）通过将流动路径（13）分成多个更窄的流动路径（14A）而设置在测量区域15的内部，用于较小的流量。流过多个较窄流路（14A）中的每一个的气体（20）的平均流速基本相等。气体（20）的一部分到达用于较小流量的跨越流速传感器（15a，15b）竖立的喷嘴（22a，22b），并通过这些喷嘴的操作加速。用于对应于通过较窄流路（14a）并由喷嘴（22a）加速的气体（20）的流速的较小量的流量输出信号的测量区域（15）内部的流速传感器（15a，15b），22b）在较小流量的范围内。用于在测量区域（16）中用于较大流量的流速传感器（16a，16b），用于在较大流量范围内对应于气体（20）的流速的较大量的流量输出信号。

5. 发明公开

EP0763718A4 FLOWMETER 失效
标题翻译： DURCHFLUSSMESSER
公开(公告)号：EP0763718A4
公开(公告)日：1997-11-05
申请号：EP95920232
申请日：1995-06-01
申请人： TOKYO GAS CO LTD
发明人： NUKUI KAZUMITSU , SAITO TOSHIHARU , NEDA TOKUDAI
IPC分类号： G01F1/32 , G01F1/684 , G01F1/696 , G01F7/00 , G01F1/68
CPC分类号： G01F7/00 , G01F1/3209 , G01F1/684 , G01F1/6842 , G01F1/696
摘要： Four flow velocity sensors 121-124 are vertically arranged in line in the same cross section of the gas flow passage of a pipeline (11). The signals from the sensors 121-124 are inputted to a mean flow velocity calculating section which calculates the mean value of the flow velocity measurements of the sensors 121-124. The mean flow velocity value calculated by the mean flow velocity calculating section is converted into a flow rate at a flow rate calculating section and the calculated flow rate is displayed on a displaying section. Since the flow rate can be accurately measured regardless of the flow velocity distribution which varies depending upon the shape, etc., of the pipeline (11), the flow rate can be accurately measured over a wide range.
摘要翻译：多个流速传感器（121-124）在管道（11）中的气体流动通道（131-134）中的相同横截面的不同位置处垂直地竖直安装。来自流速传感器的检测信号被输入到计算流速测量值的平均值的平均流速计算单元。在平均流速计算单元计算出的平均流速由流量计算单元转换为由显示器显示的流量。不管管道中的流速分布如何，由于管道形状的差异而可能发生变化，因此可以精确地测量流量。因此，在广泛的范围内精确地测量流量。

6. 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

7. 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

8. 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.

9. 发明专利

JP2002350200A FLOW RATE-MEASURING INSTRUMENT, GAS METER, AND FLOW RATE-READING APPARATUS 失效
公开(公告)号：JP2002350200A
公开(公告)日：2002-12-04
申请号：JP2001154234
申请日：2001-05-23
申请人： TOKYO GAS CO LTD , OSAKA GAS CO LTD , TOHO GAS KK , AICHI TOKEI DENKI KK
发明人： NUKUI KAZUMITSU , SAKAI KATSUTO , SATO SHINICHI , OKADA SHUICHI , KIMURA YUKIO , SATO TAKAHITO , HORI ITSURO , OHASHI MASAKI
IPC分类号： G01F1/00 , G01F3/22 , G01F15/06
摘要： PROBLEM TO BE SOLVED: To provide a flow rate-measuring instrument and a gas meter for surely and quickly performing inspection at a low flow-rate region and confirming the presence or absence of a small flow rate, and to provide a flow rate-reading apparatus for performing inspection and conformation automatically. SOLUTION: The flow rate-measuring instrument comprises a flow rate measurement section 10 for measuring the flow rate value of fluid, a flow rate value integration section 20 for integrating the integration value, a flow rate integration value display section 31 for displaying the flow rate integration value in numbers, and a flow rate blinking display section 32 for displaying a blinking figure corresponding to the change in a flow rate integration value in a smaller digit than the minimum digit of a numeric value being displayed by the flow rate value display section 31, thus displaying the change in the flow rate integration value at a low flow rate region, the presence or absence a small flow rate by blinking figures in single periods, and hence quickly and surely performing inspection or conforming the presence of a small flow rate.

10. 发明专利

JP2002303544A METHOD OF CALCULATING INITIAL VALUE OF PULSE CONSTANT OF FLUIDIC GAS METER, AND FLUIDIC GAS METER 失效
公开(公告)号：JP2002303544A
公开(公告)日：2002-10-18
申请号：JP2001107924
申请日：2001-04-06
申请人： TOKYO GAS CO LTD , OSAKA GAS CO LTD , TOHO GAS KK , AICHI TOKEI DENKI KK
发明人： NUKUI KAZUMITSU , SAKAI KATSUTO , SATO SHINICHI , OKADA SHUICHI , KIMURA YUKIO , SATO TAKAHITO , HORI ITSURO , OHASHI MASAKI
IPC分类号： G01F7/00 , G01F1/20 , G01F1/68
摘要： PROBLEM TO BE SOLVED: To calculate the pulse constant of a flow sensor when necessary even when the flow sensor is revised based on the value of flow rate measured by a fluidic oscillation element as the standard if the characteristic of the thermal flow sensor is changed due to the secular change, etc. SOLUTION: The correction coefficient r=Qn /QFS is calculated based on the FD flow rate Qn and the FS flow rate QFS at the time of calibration of the flow sensor. The pulse constant a is updated by a=r×a, and stored. The sensitivity change rate R is updated by r×R. After a few times of calibrations, the initial value a(o) of the pulse constant a is calculated by a(o)=a/R. The calculation is useful for the analysis of troubles.

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