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1. 发明专利

JP2004093177A Integrating flowmeter 有权
公开(公告)号：JP2004093177A
公开(公告)日：2004-03-25
申请号：JP2002251047
申请日：2002-08-29
申请人： Takenaka Seisakusho Co Ltd , Tokyo Gas Co Ltd , Yamatake Corp , 東京瓦斯株式会社 , 株式会社山武 , 株式会社竹中製作所
发明人： SETO MINORU , KOMAKI MICHINORI , TASHIRO TAKESHI , SAKAI KATSUTO , KOTAKANE KAZUTO , OSHIMA HIDEKAZU , ISHITANI SATOSHI , MURAOKA MANABU , SEO MASAMI
IPC分类号： G01F7/00 , G01F1/00 , G01F1/696 , G01F1/72 , G01F15/075
摘要： PROBLEM TO BE SOLVED: To provide an integrating flowmeter which can obtain accurately an integrated flow rate of fluid passing a specified channel, without depending on presence and absence of a pulsation state. SOLUTION: The integrating flowmeter is provided with a thermal flow sensor for measuring an instantaneous flow rate of the fluid passing the specified channel, a flow rate measure which integrates the instantaneous flow rate measured by the flow sensor, outputs a unit flow rate signal when the integrated value reaches a prescribed unit flow rate, and resets the integrated value, and a flow rate integrating means which counts the unit flow rate signal output from the flow rate measure, and obtains an integrated flow rate of the fluid passing the specified channel. The integrating flow meter is provided especially with a ripple detecting means for detecting a ripple state of the fluid in the channel, and an instrument range changing means which sets widely instrumentation range by the thermal flow sensor, when pulsation is detected by the pulsation detecting means. COPYRIGHT: (C)2004,JPO

2. 发明专利

JP2004093175A Thermal type flowmeter 有权
标题翻译：热式流量计
公开(公告)号：JP2004093175A
公开(公告)日：2004-03-25
申请号：JP2002251045
申请日：2002-08-29
申请人： Takenaka Seisakusho Co Ltd , Tokyo Gas Co Ltd , Yamatake Corp , 東京瓦斯株式会社 , 株式会社山武 , 株式会社竹中製作所
发明人： NUKUI KAZUMITSU , KOMAKI MICHINORI , TASHIRO TAKESHI , OSHIMA HIDEKAZU , ISHITANI SATOSHI , MURAOKA MANABU , SEO MASAMI
IPC分类号： G01F7/00 , G01F1/68
摘要： PROBLEM TO BE SOLVED: To provide a thermal type flowmeter enhanced in operating reliability by avoiding a flow measurement disabled situation even at the occurrence of a failure of a low-speed flow sensor.
SOLUTION: This thermal type flowmeter is provided with a plurality of low-speed flow sensors for measuring a low flow region and a plurality of high speed flow sensors for measuring a high flow region built in a prescribed passage, and a flow measuring means for measuring the flow while selectively using either the low-speed flow sensors or the high-speed flow sensors according to the flow of a fluid flowing through the passage. The thermal type flowmeter is further provided with a failure detecting means for detecting the failure of the low-speed flow sensors, and a measurement control means for carrying out flow measurement using the high-speed flow sensors regardless of the flow when detecting the failure of all the low-speed flow sensors by the failure detecting means.
COPYRIGHT: (C)2004,JPO
摘要翻译：要解决的问题：即使在低速流量传感器发生故障的情况下，通过避免流量测量禁用的情况来提供增强的操作可靠性的热式流量计。
解决方案：该热式流量计设有多个用于测量低流动区域的低速流量传感器和用于测量内置在规定通道中的高流量区域的多个高速流量传感器，以及流量测量用于根据流经通道的流体的流动选择性地使用低速流量传感器或高速流量传感器来测量流量的装置。热式流量计还设置有用于检测低速流量传感器的故障的故障检测装置，以及测量控制装置，用于当检测到故障时使用高速流量传感器进行流量测量所有的低速流量传感器都由故障检测装置。版权所有（C）2004，JPO

3. 发明专利

JP2004093173A Integrating flowmeter 有权
公开(公告)号：JP2004093173A
公开(公告)日：2004-03-25
申请号：JP2002251043
申请日：2002-08-29
申请人： Takenaka Seisakusho Co Ltd , Tokyo Gas Co Ltd , Yamatake Corp , 東京瓦斯株式会社 , 株式会社山武 , 株式会社竹中製作所
发明人： SETO MINORU , KOMAKI MICHINORI , TASHIRO TAKESHI , OSHIMA HIDEKAZU , ISHITANI SATOSHI , MURAOKA MANABU , SEO MASAMI
IPC分类号： G01F3/22 , G01F1/696 , G01F15/075
摘要： PROBLEM TO BE SOLVED: To provide an integrating flowmeter which can obtain accurately integrated flow rate of fluid passing a specified channel, without depending on the presence and absence of a pulsation state. SOLUTION: The integrating flowmeter is provided with a thermal flow rate sensor for measuring an instantaneous flow rate of the fluid passing the specified channel, a flow rate measure which integrates the instantaneous flow rate measured by the sensor, outputs a unit flow rate signal when the integrated value reaches a prescribed unit flow rate, and resets the integrated value, and a flow rate integrating means which counts the unit flow rate signal output from the integrating means, and obtains an integrated flow rate of the fluid passing the specified channel. A resetting means is installed which resets compulsorily an integrated value especially when the integrated value in the flow rate measure in a prescribed period does not reach the prescribed unit flow rate. COPYRIGHT: (C)2004,JPO

4. 发明专利

JP2004093170A Flow straightener 审中-公开
公开(公告)号：JP2004093170A
公开(公告)日：2004-03-25
申请号：JP2002251040
申请日：2002-08-29
申请人： Takenaka Seisakusho Co Ltd , Tokyo Gas Co Ltd , Yamatake Corp , 東京瓦斯株式会社 , 株式会社山武 , 株式会社竹中製作所
发明人： NUKUI KAZUMITSU , KOMAKI MICHINORI , TASHIRO TAKESHI , OSHIMA HIDEKAZU , ISHITANI SATOSHI , YAO TAKESHI , TAMURA HIROSHI
IPC分类号： G01F1/00 , F15D1/02 , G01F15/12 , G01P5/00
CPC分类号： G01F15/00 , F15D1/025
摘要： PROBLEM TO BE SOLVED: To provide a flow straightener capable of securing stable accuracy by preventing plugging of a flow straightening element even if using a detecting part of a flow meter in environment of much dust.
SOLUTION: This flow straightener 4 comprises a plurality of wire mesh 6-8 of different mesh gauge installed at spaces upstream of a flow velocity sensor 3 of the flow meter to straighten fluid flow. The wire mesh 8 of the smallest mesh gauge is disposed most upstream of the flow velocity sensor 3, and the wire mesh 7, 6 of larger mesh gauge are arranged in sequence downstream of the wire mesh 8.
COPYRIGHT: (C)2004,JPO

5. 发明专利

JP2004093176A Integrating flowmeter 有权
公开(公告)号：JP2004093176A
公开(公告)日：2004-03-25
申请号：JP2002251046
申请日：2002-08-29
申请人： Takenaka Seisakusho Co Ltd , Tokyo Gas Co Ltd , Yamatake Corp , 東京瓦斯株式会社 , 株式会社山武 , 株式会社竹中製作所
发明人： SETO MINORU , KOMAKI MICHINORI , TASHIRO TAKESHI , OSHIMA HIDEKAZU , ISHITANI SATOSHI , MURAOKA MANABU , SEO MASAMI
IPC分类号： G01F3/22 , G01F15/075
摘要： PROBLEM TO BE SOLVED: To provide an integrating flowmeter which can obtain accurately an integrated flow rate of fluid passing a specified channel, without depending on presence and absence of a pulsation state.
SOLUTION: The integrating flowmeter is provided with a thermal flow sensor for measuring an instantaneous flow rate of the fluid passing the specified channel, a flow rate measure which integrates the instantaneous flow rate measured by the flow sensor, outputs a unit flow rate signal when the integrated value reaches a prescribed unit flow rate, and resets the integrated value, and a flow rate integrating means which counts the unit flow rate signal output from the flow rate measure, and obtains an integrated flow rate of the fluid passing the specified channel. The integrating flow meter is provided especially with a pulsation detecting means for detecting a pulsation state of the fluid in the channel, and a flow rate measure changing means which changes largely and sets the unit flow rate turning to interpretation criteria of an integrated value in the flow rate measure, when a pulsation is detected by the pulsation detecting means.
COPYRIGHT: (C)2004,JPO

6. 发明专利

JP2004093174A Flowmeter 有权
公开(公告)号：JP2004093174A
公开(公告)日：2004-03-25
申请号：JP2002251044
申请日：2002-08-29
申请人： Takenaka Seisakusho Co Ltd , Tokyo Gas Co Ltd , Yamatake Corp , 東京瓦斯株式会社 , 株式会社山武 , 株式会社竹中製作所
发明人： SETO MINORU , TASHIRO TAKESHI , SAKAI KATSUTO , KOTAKANE KAZUTO , OSHIMA HIDEKAZU , ISHITANI SATOSHI , MURAOKA MANABU , SEO MASAMI
IPC分类号： G01F1/00 , G01F1/696 , G01F1/76 , G01F15/02
摘要： PROBLEM TO BE SOLVED: To improve instrumentation accuracy by performing simply and effectively temperature compensation and/or pressure compensation of an output of a thermal flow sensor. SOLUTION: The flowmeter is provided with the thermal flow sensor and a flow rate calculating means for obtaining a simultaneous flow Q of fluid according to a flow velocity v obtained by the flow sensor. The flow sensor is especially provided with a temperature sensor for obtaining a temperature t of the fluid, and a temperature correction table in which temperature variation characteristics of the thermal flow sensor are stored as a correction value ▵X(v, t) per unit temperature concerning the flow rate v and the temperature t. Further, the flowmeter is provided with a flow rate correcting means for correcting the flow rate v as a flow rate V at a reference temperature by setting V=v+▵X(v, t)×(t-to) according to the flow rate v and the temperature t of the fluid and the correction value ▵X(v, t) registered in the temperature correction table. COPYRIGHT: (C)2004,JPO

7. 发明专利

JP2004093172A Flow meter 审中-公开
公开(公告)号：JP2004093172A
公开(公告)日：2004-03-25
申请号：JP2002251042
申请日：2002-08-29
申请人： Takenaka Seisakusho Co Ltd , Tokyo Gas Co Ltd , Yamatake Corp , 東京瓦斯株式会社 , 株式会社山武 , 株式会社竹中製作所
发明人： NUKUI KAZUMITSU , KOMAKI MICHINORI , TASHIRO TAKESHI , OSHIMA HIDEKAZU , ISHITANI SATOSHI , FUJITA TOSHINOBU , SEO MASAMI
IPC分类号： G01F1/00 , G01F1/696
摘要： PROBLEM TO BE SOLVED: To provide a flow meter simple in wiring structure to a plurality of flow sensors and suitable for high accuracy measurement of the flow of a fluid flowing through a prescribed fluid passage. SOLUTION: This flow meter is provided with a plurality of flow sensors built in a prescribed fluid passage (piping) to respectively measure the flow of the fluid (gas) flowing through the fluid passage, and a measuring instrument body for inputting flow detection signals from the respective flow sensors to obtain the flow of the fluid flowing through the fluid passage. The flow meter is further provided with selectors provided near the plurality of flow sensors (flow sensor substrates) to select and lead the flow detection signals from the respective flow sensors to the measuring instrument body, and a sensor selecting means provided at the measuring instrument body to supply the selection signals to the selectors and to control the operation of the selectors. COPYRIGHT: (C)2004,JPO

8. 发明专利

JP2004093169A Flow straightening unit 有权
公开(公告)号：JP2004093169A
公开(公告)日：2004-03-25
申请号：JP2002251039
申请日：2002-08-29
申请人： Takenaka Seisakusho Co Ltd , Tokyo Gas Co Ltd , Yamatake Corp , 東京瓦斯株式会社 , 株式会社山武 , 株式会社竹中製作所
发明人： NUKUI KAZUMITSU , KOMAKI MICHINORI , TASHIRO TAKESHI , OSHIMA HIDEKAZU , ISHITANI SATOSHI , TAMURA HIROSHI , YAO TAKESHI
IPC分类号： G01F1/00 , F15D1/02 , G01F15/00
摘要： PROBLEM TO BE SOLVED: To provide a flow straightening unit securing reproducibility of fluid flow by integrally attaching a plurality of flow straightening elements installed upstream of a flow velocity sensor of a flow meter to straighten the fluid flow, and holding the mutual positional relationship.
SOLUTION: The plurality of flow straightening elements 14-17 installed in a passage 12c upstream of the flow velocity sensor 3 of the flow meter to straighten the fluid flow are individually mounted and fixed to cylindrical rings 21-24 for every flow straightening element, and the respective rings are sequentially fitted, fixed and integrally attached to constitute the flow straightening unit 13.
COPYRIGHT: (C)2004,JPO

9. 发明专利

JP2003035612A Combustion heat flow rate measuring instrument, combustion heat flow rate measuring method, gas meter and gas use quantity inspection device 审中-公开
标题翻译：燃烧热流量测量仪器，燃烧热流量测量方法，气量计和气体使用量检测装置
公开(公告)号：JP2003035612A
公开(公告)日：2003-02-07
申请号：JP2002130620
申请日：2002-05-02
申请人： Tokyo Gas Co Ltd , 東京瓦斯株式会社
发明人： NUKUI KAZUMITSU , SETO MINORU , KOMAKI MICHINORI , KOBAYASHI MASATOMO , TASHIRO TAKESHI
IPC分类号： G01F3/22 , G01D4/00 , G01K17/00 , G01N25/20 , G08C15/00 , G08C17/00
摘要： PROBLEM TO BE SOLVED: To provide a combustion heat flow rate measuring instrument simple in constitution capable of accurately measuring the use flow rate as fuel of a fluid on the basis of the dimension of a combustion heat flow rate, even if one or more different variations are present in the compositional component ratio of the fluid, a gas meter and a gas use quantity inspection device. SOLUTION: The change in quantity of heat or in temperature caused by the flow of the fluid in a flow passage is detected by a flow rate measuring sensor (flow rate measuring means) 100 to be outputted as an electric signal. The electric signal is subjected to linear corresponding processing (processing linearly corresponding to a combustion heat flow rate per a unit time) in an linearization arithmetic part (linearization arithemetic means) 201, to more directly obtain the data of the accurate combustion heat flow rate value wherein tolerance is received in a predetermined allowable range.
摘要翻译：要解决的问题：为了提供简单的结构，能够基于燃烧热流量的尺寸精确地测量作为流体的燃料的流量的燃烧热流量测量仪器，即使一个或多个不同的变化以流体，气量计和气体使用量检查装置的组成成分比率存在。解决方案：通过流量测量传感器（流量测量装置）100检测流路中的流体流动导致的热量或温度的变化，作为电信号输出。在线性化运算部（线性化混合装置）201中对电信号进行线性对应处理（对应于单位时间的燃烧热流量的线性处理），以更直接地获得准确的燃烧热流量值的数据其中在预定的允许范围内接收公差。

10. 发明专利

JP2000074717A Device and method for monitoring abnormality in pressure and gas meter 审中-公开
标题翻译：用于监测压力和气体表中异常的装置和方法
公开(公告)号：JP2000074717A
公开(公告)日：2000-03-14
申请号：JP24798898
申请日：1998-09-02
申请人： Tokyo Gas Co Ltd , 東京瓦斯株式会社
发明人： NUKUI KAZUMITSU , KOMAKI MICHINORI , TASHIRO TAKESHI
IPC分类号： G01F1/00 , G01F3/22 , G01L7/00 , G05D7/06 , G05D16/06
摘要： PROBLEM TO BE SOLVED: To prevent the occurrence of leakage from a pipeline by monitoring the occurrence of an abnormal pressure in the pipeline while the pipeline is maintained in a shut-off state.
SOLUTION: A control section 20 judges whether or not an abnormal pressure has occurred in a pipeline 2 based on the detecting signal of a pressure sensor 15 and maintains the pressure in the pipeline 2 at normal value while the pipeline 2 is maintained in a shut-off state by controlling a shut-off valve 13 in accordance with the discriminated results. When, for example, the control section 20 judges that an abnormal pressure exceeding a prescribed range occurs in the pipeline 2, the section 20 controls the valve 13 to temporarily open the flow passage in the pipeline 2. When the section 20 judges that an abrupt pressure drop occurs in the pipeline 2 based on the detecting signal of the sensor 15, the section 20 discriminates that leakage occurs on the pipeline 2, informs the host computer 30a of a command center 30 of it, and controls the shut-off value 13 so as to maintain the flow passage in the pipeline 2 in a shut-off state.
COPYRIGHT: (C)2000,JPO
摘要翻译：要解决的问题：通过在管道保持关闭状态期间监视管道中的异常压力的发生来防止管道发生泄漏。解决方案：控制部分20基于压力传感器15的检测信号来判断管道2中是否发生异常压力，并将管道2中的压力保持在正常值，同时将管道2保持在关闭状态，通过根据所识别的结果控制截止阀13来关闭状态。例如，当控制部20判断为在管路2中出现超过规定范围的异常压力时，部分20控制阀13暂时打开管道2中的流路。当部分20判断为突然基于传感器15的检测信号在管线2中发生压降，部分20判断出管线2发生泄漏，向主机30a通知其指令中心30，并控制关断值13 从而将管路2中的流路保持在切断状态。

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