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41. 发明专利

JP2009216641A Ultrasonic gas meter 有权
标题翻译：超声波气体计
公开(公告)号：JP2009216641A
公开(公告)日：2009-09-24
申请号：JP2008062666
申请日：2008-03-12
申请人： Aichi Tokei Denki Co Ltd , Toho Gas Co Ltd , Tokyo Gas Co Ltd , Toshiba Corp , 愛知時計電機株式会社 , 東京瓦斯株式会社 , 東邦瓦斯株式会社 , 株式会社東芝
发明人： MORINAGA TAKESHI , HASEBE SHINYA , UYAMA HIROTO , ISHINO HITOAKI , SUZUKI MAMORU , KONO SACHIKO , NAGAI NOZOMI , ISHIDA HIROSHI , HORI ITSURO
IPC分类号： G01F3/22 , G01F1/66
摘要： PROBLEM TO BE SOLVED: To provide an ultrasonic gas meter for stopping abnormality determination or flow rate integration to a flow sensor when a gas meter is dismantled, preventing erroneous determination of a flow sensor abnormality, and performing accurate flow measurement.
SOLUTION: This ultrasonic gas meter having the flow meter for measuring a flow rate of gas flowing in a channel includes an abnormality detection part 26 for detecting an abnormality of flow data measured by the flow sensor, a removal determination part 28 for determining whether the ultrasonic gas meter is in a removed state from a pipe or not, a counting part 29 for counting the number of times of flow data abnormalities detected by the abnormality detection part 26 corresponding to a determination result determined by the removal determination part 28, and an abnormality determination part 30 for determining an abnormality of the flow sensor based on the number of times of flow data abnormalities counted by the counting part 29.
COPYRIGHT: (C)2009,JPO&INPIT
摘要翻译：要解决的问题：提供一种超声波燃气表，用于在拆除燃气表时停止异常判定或流量积分到流量传感器，防止流量传感器异常的错误判定，并进行精确的流量测量。解决方案：具有用于测量在通道中流动的气体的流量的流量计的超声波燃气表包括用于检测由流量传感器测量的流量数据异常的异常检测部26，用于确定是否超声波气体计是否处于来自管道的去除状态;计数部分29，用于计数由异常检测部分26检测的流量数据异常次数，与由清除确定部分28确定的确定结果相对应; 以及用于根据由计数部29计数的流量数据异常次数来确定流量传感器的异常的异常判定部30。（C）2009，JPO＆INPIT

42. 发明专利

JP2008232750A Ultrasonic flowmeter 有权
标题翻译：超声波流量计
公开(公告)号：JP2008232750A
公开(公告)日：2008-10-02
申请号：JP2007071164
申请日：2007-03-19
申请人： Aichi Tokei Denki Co Ltd , Toho Gas Co Ltd , Tokyo Gas Co Ltd , Toshiba Corp , 愛知時計電機株式会社 , 東京瓦斯株式会社 , 東邦瓦斯株式会社 , 株式会社東芝
发明人： MATSUO KAZUYA , UYAMA HIROTO , HASEBE SHINYA , MORI FUMITAKA , TAKAHASHI YUKIO , FUJIMOTO TATSUO , SUZUKI MAMORU , KONO SACHIKO , NAGAI NOZOMI , ISHIDA HIROSHI , HORI ITSURO
IPC分类号： G01F1/66
摘要： PROBLEM TO BE SOLVED: To provide an ultrasonic flowmeter which prevents erroneous flow rate measurement by providing a function of evading abnormal measurement caused by chattering or the like on the occasion of first wave detection of a received wave, and stabilizing the operation of a level comparator.
SOLUTION: The ultrasonic flowmeter has ultrasonic oscillators 22 and 24, a zero-cross detection section 40 for detecting a zero-cross point of a received wave signal and outputting a received wave detection point signal, a comparator section 34 for comparing the received wave signal with a reference voltage signal and outputting a comparison result output signal, and a controller 28a for detecting the timing of reception of the ultrasonic wave on the basis of the received wave detection point signal and the comparison result output signal, measuring a propagation time of the ultrasonic signal, and measuring and accumulating the flow rate of a fluid to be measured on the basis of the propagation time. The controller 28a is equipped with a chattering detection means for outputting a chattering detection signal, and a flow rate of the measuring fluid measured when a chattering is detected is not accumulated, and a flow rate measured just before is accumulated.
COPYRIGHT: (C)2009,JPO&INPIT
摘要翻译：解决问题的方案：提供一种超声波流量计，其通过提供在接收波的第一次波检测时避免由抖动等引起的异常测量的功能来防止错误的流量测量，并且稳定操作电平比较器。解决方案：超声波流量计具有超声波振荡器22,24，用于检测接收波信号的零交叉点并输出接收波检测点信号的零交叉检测部40，比较部34 利用参考电压信号接收波信号并输出比较结果输出信号;以及控制器28a，用于根据接收的波检测点信号和比较结果输出信号检测超声波的接收定时，测量传播超声波信号的时间，并根据传播时间测量和累积待测流体的流量。控制器28a配备有用于输出抖动检测信号的颤振检测装置，并且在不检测到抖动时测量的测量流体的流量，并且累积了刚刚测量的流量。版权所有（C）2009，JPO＆INPIT

43. 发明专利

JP2005214702A Gas meter 审中-公开
标题翻译：气体计
公开(公告)号：JP2005214702A
公开(公告)日：2005-08-11
申请号：JP2004019456
申请日：2004-01-28
申请人： Aichi Tokei Denki Co Ltd , Toho Gas Co Ltd , Tokyo Gas Co Ltd , 愛知時計電機株式会社 , 東京瓦斯株式会社 , 東邦瓦斯株式会社
发明人： HONDA KAZUYOSHI , FUJIMOTO TATSUO , SUZUKI MAMORU , YUASA KENICHIRO , HIROYAMA TORU , TANAKA YUTAKA , HORI ITSURO
IPC分类号： G01F23/24 , G01F3/22
摘要： PROBLEM TO BE SOLVED: To detect submergence before a gas meter is submerged and thereby a pressure sensor becomes unable to sense a pressure, when the gas meter is installed in a pit lower than the ground surface, and to issue a submergence warning to the outside.
SOLUTION: The interval between electrodes of a submergence detection switch 10 mounted on a meter case of this gas meter is insulated by a sensor body 11. When submergence occurs and water is raised up to W2, the electrodes 12, 13 are dipped in the water. Then, the electrodes 12, 13 are short circuited by the water, and the electric resistance value between both electrodes is lowered abnormally. The submergence is noticed by the abnormal lowering. The submergence warning is issued to the outside of the gas meter.
COPYRIGHT: (C)2005,JPO&NCIPI
摘要翻译：要解决的问题：为了在燃气表被淹没之前检测淹没，从而压力传感器不能感测到压力，当燃气表安装在比地面低的坑内，并发出淹没警告到外面
解决方案：安装在该燃气表的仪表壳体上的淹没检测开关10的电极之间的间隔由传感器主体11绝缘。当发生淹没并且水升至W2时，电极12,13被浸渍在水里。然后，电极12,13被水短路，两电极之间的电阻值异常地降低。淹没被注意到异常下降。燃气表外面发出淹没警告。版权所有（C）2005，JPO＆NCIPI

44. 发明专利

JP2005195558A Gas meter connection mechanism and gas meter connection unit and gas meter 审中-公开
标题翻译：气量计连接机构和气体计量器连接单元和气体计
公开(公告)号：JP2005195558A
公开(公告)日：2005-07-21
申请号：JP2004004751
申请日：2004-01-09
申请人： Aichi Tokei Denki Co Ltd , Toho Gas Co Ltd , Tokyo Gas Co Ltd , 愛知時計電機株式会社 , 東京瓦斯株式会社 , 東邦瓦斯株式会社
发明人： HONDA KAZUYOSHI , FUJIMOTO TATSUO , SUZUKI MAMORU , YUASA KENICHIRO , HIROYAMA TORU , TANAKA YUTAKA , KONDO KATSUHIKO
IPC分类号： G01F3/22 , G01F15/18
摘要： PROBLEM TO BE SOLVED: To eliminate a screw connection of a connection mechanism between a gas meter and a gas meter connection unit, simplify installation work when installing the gas meter, reduce leakage at a connection part and simplify replacement of the gas meter.
SOLUTION: When mounting the gas meter 60 on the gas meter connection unit 30, a contact face 64 of the meter is contacted with a contact face 41 of the connection unit and a contact face 63 of the meter is contacted with a contact face 40 of the connection unit. Round holes 61, 62 of an inlet and an outlet of the gas meter are respectively fitted with cylindrical protruding parts 36 and 38 of the connection unit. O-rings 37 and 39 are provided to maintain air-tightness. A shaft 46 is rotated by rotating a handle 45 and the gas meter is fixed by engaging an engaging means 44 in a round panel shape eccentric to the shaft with a recessed part 65 of the gas meter 60.
COPYRIGHT: (C)2005,JPO&NCIPI
摘要翻译：要解决的问题：为了消除燃气表和燃气表连接单元之间的连接机构的螺纹连接，简化安装燃气表时的安装工作，减少连接部件的泄漏，简化燃气表的更换。
解决方案：当将气量计60安装在燃气表连接单元30上时，仪表的接触面64与连接单元的接触面41接触，并且仪表的接触面63与接触连接单元的面40。气量计的入口和出口的圆孔61,62分别装配有连接单元的圆柱形突出部分36和38。提供O形环37和39以保持气密性。通过旋转手柄45来旋转轴46，并且通过与气体计量器60的凹部65接合具有与轴偏心的圆形面板形状的接合装置44来固定气量计。（C） 2005年，JPO＆NCIPI

45. 发明专利

JP2008128825A Ultrasonic flowmeter 审中-公开
标题翻译：超声波流量计
公开(公告)号：JP2008128825A
公开(公告)日：2008-06-05
申请号：JP2006314338
申请日：2006-11-21
申请人： Aichi Tokei Denki Co Ltd , Toho Gas Co Ltd , Tokyo Gas Co Ltd , Toshiba Corp , 愛知時計電機株式会社 , 東京瓦斯株式会社 , 東邦瓦斯株式会社 , 株式会社東芝
发明人： MAOKA TADANORI , SAMEDA YOSHITOMI , TAKAHASHI YUKIO , NAKANO KENJI , UYAMA HIROTO , FUJIMOTO TATSUO , SUZUKI MAMORU , KONO SACHIKO , NAGAI NOZOMI , YUASA KENICHIRO , ISHIDA HIROSHI , HIROYAMA TORU , HATTORI HIROSHI
IPC分类号： G01F1/66 , G01F1/00 , G01F3/22
摘要： PROBLEM TO BE SOLVED: To provide an ultrasonic flowmeter capable of absorbing pulsation by simple structure improvement without large modification or without requiring an electronic circuit for performing complicated correcting calculation.
SOLUTION: The ultrasonic flowmeter comprises a measuring tube 6 arranged in a fluid passage 11, and a pair of ultrasonic transmitter-receivers 5 arranged so that ultrasonic waves propagate in the measuring tube diagonally crossing the central axis of the measuring tube. The ultrasonic flowmeter transmits and receives ultrasonic waves between the pair of ultrasonic transmitter-receivers, measures the propagation time of the ultrasonic wave in the forward direction and backward direction of the flow of fluid, and calculates the flow rate of the fluid based on the difference of the measured propagation time. The ultrasonic flowmeter has a fluid resistor 10 in at least one of the upstream-side passage and the downstream-side passage of the measuring tube 6.
COPYRIGHT: (C)2008,JPO&INPIT
摘要翻译：要解决的问题：提供一种能够通过简单的结构改进而吸收脉动的超声波流量计，而无需大的修改或不需要用于执行复杂校正计算的电子电路。解决方案：超声波流量计包括布置在流体通道11中的测量管6和一对超声波发射器 - 接收器5，其布置成超声波在与测量管的中心轴对角地交叉的测量管中传播。超声波流量计在一对超声波发射接收器之间发送和接收超声波，测量超声波在流体的正向和反向方向上的传播时间，并根据差异来计算流体的流量的测量传播时间。超声波流量计在测量管6的上游侧通道和下游侧通道中的至少一个中具有流体电阻器10.版权所有（C）2008，JPO＆INPIT

46. 发明专利

JP2008014834A Ultrasonic flowmeter 审中-公开
标题翻译：超声波流量计
公开(公告)号：JP2008014834A
公开(公告)日：2008-01-24
申请号：JP2006187131
申请日：2006-07-06
申请人： Aichi Tokei Denki Co Ltd , Toho Gas Co Ltd , Tokyo Gas Co Ltd , Toshiba Corp , 愛知時計電機株式会社 , 東京瓦斯株式会社 , 東邦瓦斯株式会社 , 株式会社東芝
发明人： NAKANO KENJI , SAMEDA YOSHITOMI , TAKAHASHI YUKIO , HASEBE SHINYA , FUJIMOTO TATSUO , SUZUKI MAMORU , KONO SACHIKO , NAGAI NOZOMI , YUASA KENICHIRO , HIROYAMA TORU , ISHIDA HIROSHI , TANAKA YUTAKA , HORI ITSURO , HATTORI HIROSHI
IPC分类号： G01F1/66 , G01F3/22
摘要： PROBLEM TO BE SOLVED: To provide an ultrasonic flowmeter capable of accurately measuring the flow rate.
SOLUTION: The ultrasonic flowmeter comprises a measuring section 11 for measuring the flow rate of fluid to be measured that flows in a passage, based on the propagation time of an ultrasonic signal that is transmitted and received between a plurality of ultrasonic vibrators 12a, 12b placed apart a certain distance from each other on the upper stream side and the lower stream side of the passage, in which the fluid to be measured flows; a storing section 13 for determining the difference between the true value of the flow rate of the fluid measured by a master flow meter 3 and the measured value of the flow rate of the fluid measured by a measuring instrument 1 for each discrete representation point and then storing them as compensation values; an interpolation means 23 for determining continuous compensation values, by interpolating compensation values for each of the discrete representation point that are stored in the storing section, and then approximating the instrumental error curve that indicates errors of measured values ; and a compensating means 23 for determining the true value of the flow rate of the fluid by compensating the measured value of the flow rate of the fluid that is measured by the measuring section, by using the instrumental error curve that is approximated by the interpolation means.
COPYRIGHT: (C)2008,JPO&INPIT
摘要翻译：要解决的问题：提供能够精确地测量流量的超声波流量计。解决方案：超声波流量计包括：测量部分11，用于根据在多个超声波振动器12a之间传输和接收的超声波信号的传播时间来测量在通道中流动的待测流体的流量; 12b在被测流体流过的通道的上游侧和下游侧彼此隔开一定距离; 存储部分13，用于确定由主流量计3测量的流体的流量的真实值与由测量仪器1针对每个离散表示点测量的流体的流量的测量值之间的差，然后将其存储为补偿值; 插值装置23，用于通过内插存储在存储部分中的每个离散表示点的补偿值，然后近似表示测量值误差的工具误差曲线来确定连续补偿值; 以及补偿装置23，用于通过使用由插值装置近似的工具误差曲线来补偿由测量部分测量的流体的流量的测量值来确定流体的流量的真实值。版权所有（C）2008，JPO＆INPIT

47. 发明专利

JP2008014833A Ultrasonic flowmeter 审中-公开
标题翻译：超声波流量计
公开(公告)号：JP2008014833A
公开(公告)日：2008-01-24
申请号：JP2006187130
申请日：2006-07-06
申请人： Aichi Tokei Denki Co Ltd , Toho Gas Co Ltd , Tokyo Gas Co Ltd , Toshiba Corp , 愛知時計電機株式会社 , 東京瓦斯株式会社 , 東邦瓦斯株式会社 , 株式会社東芝
发明人： SAMEDA YOSHITOMI , TAKAHASHI YUKIO , HASEBE SHINYA , FUJIMOTO TATSUO , SUZUKI MAMORU , KONO SACHIKO , NAGAI NOZOMI , YUASA KENICHIRO , HIROYAMA TORU , ISHIDA HIROSHI , TANAKA YUTAKA , HATTORI HIROSHI , GOMYO TOMOO
IPC分类号： G01F1/66 , H04R1/34
摘要： PROBLEM TO BE SOLVED: To provide an ultrasonic flowmeter capable of accurately measuring the quantity of flow even if a flow velocity distribution in a channel is not uniform.
SOLUTION: The ultrasonic flowmeter includes a the channel 1 through which a fluid to be measured flows; a first ultrasonic oscillator 11 arranged on the upstream side of the channel; a first acoustic lens 12 for converting ultrasonic waves transmitted from the first ultrasonic oscillator as spherical waves into plane waves, guiding them to the upstream-side aperture surface of the channel, converting ultrasonic waves transmitted from the upstream-side aperture surface as plane waves into spherical waves, and guiding them to the first ultrasonic oscillator; a second ultrasonic oscillator 21 arranged on the downstream side of the channel; and a second acoustic lens 22 for converting ultrasonic waves transmitted from the second ultrasonic oscillator as spherical waves into plane waves, guiding them to the downstream-side aperture plane, converting ultrasonic waves transmitted from the downstream-side aperture surface as plane waves into spherical waves, and guiding them to the second ultrasonic oscillator. The quantity of flow of the fluid to be measured flowing through the channel is computed on the basis of the propagation time of ultrasonic waves transmitted and received between the first ultrasonic oscillator and the second ultrasonic oscillator.
COPYRIGHT: (C)2008,JPO&INPIT
摘要翻译：要解决的问题：提供一种即使在通道中的流速分布不均匀的情况下也能够精确地测量流量的超声波流量计。解决方案：超声波流量计包括流过待测流体的通道1; 布置在所述通道的上游侧的第一超声波振荡器11; 用于将从第一超声波振荡器发送的超声波作为球面波转换为平面波的第一声透镜12，将其引导到通道的上游侧孔径表面，将从上游侧孔径表面传输的超声波转换为平面波，并将其引导到第一超声波振荡器; 布置在所述通道的下游侧的第二超声波振荡器21; 以及第二声透镜22，用于将从第二超声波振荡器发射的超声波作为球面波转换为平面波，将其引导到下游侧孔径面，将从下游侧孔径面发射的超声波转换为球面波并将它们引导到第二超声波振荡器。基于在第一超声波振荡器和第二超声波振荡器之间发送和接收的超声波的传播时间来计算流过通道的被测量流体的流量。版权所有（C）2008，JPO＆INPIT

48. 发明专利

JP2008014840A Ultrasonic flowmeter 审中-公开
标题翻译：超声波流量计
公开(公告)号：JP2008014840A
公开(公告)日：2008-01-24
申请号：JP2006187175
申请日：2006-07-06
申请人： Aichi Tokei Denki Co Ltd , Toho Gas Co Ltd , Tokyo Gas Co Ltd , Toshiba Corp , 愛知時計電機株式会社 , 東京瓦斯株式会社 , 東邦瓦斯株式会社 , 株式会社東芝
发明人： HASEBE SHINYA , SAMEDA YOSHITOMI , TAKAHASHI YUKIO , FUJIMOTO TATSUO , SUZUKI MAMORU , KONO SACHIKO , NAGAI NOZOMI , YUASA KENICHIRO , HIROYAMA TORU , ISHIDA HIROSHI , NABESHIMA NORIYUKI , HORI ITSURO
IPC分类号： G01F1/66
摘要： PROBLEM TO BE SOLVED: To provide an ultrasonic flowmeter capable of heightening measurement accuracy of a flow rate by removing a measurement error. SOLUTION: In this ultrasonic flowmeter, a pair of ultrasonic vibrators 2a, 2b are provided at a fixed distance on the upstream side and on the downstream side of a channel, and an ultrasonic wave is transmitted/received by switching the transmission/reception direction between the forward direction and the reverse direction, and a flow rate is determined based on an arrival time of the ultrasonic wave in each direction. The flowmeter includes a transmission circuit 4 for generating a transmission signal to be transmitted to one ultrasonic vibrator, a reception detection circuit 5 for detecting a reception signal from the other ultrasonic vibrator, and a transmission/reception changeover switch 3 for switching mutually one ultrasonic vibrator to/from the other ultrasonic vibrator. The flowmeter has equalized values, namely, a resistance value of a route for the transmission signal when transmitting/receiving the ultrasonic wave in the forward direction, a resistance value of a route for the reception signal when transmitting/receiving the ultrasonic wave in the forward direction, a resistance value of a route for the transmission signal when transmitting/receiving the ultrasonic wave in the reverse direction, and a resistance value of a route for the reception signal when transmitting/receiving the ultrasonic wave in the reverse direction. COPYRIGHT: (C)2008,JPO&INPIT
摘要翻译：要解决的问题：提供能够通过消除测量误差来提高流量的测量精度的超声波流量计。解决方案：在该超声波流量计中，在通道的上游侧和下游侧以固定距离设置一对超声波振动器2a，2b，通过切换发送/ 在正向和反向之间的接收方向，并且基于超声波在每个方向上的到达时间来确定流量。流量计包括用于产生要发送到一个超声波振动器的发送信号的发送电路4，用于检测来自其他超声波振动器的接收信号的接收检测电路5和用于切换相互一个超声波振动器的发送/接收切换开关3 往/从另一个超声波振动器。流量计具有相等的值，即在向前方向发送/接收超声波时的发送信号的路线的电阻值，在向前发送接收超声波时的接收信号的路径的电阻值方向，当在相反方向上发送/接收超声波时用于发送信号的路线的电阻值，以及在反方向发送/接收超声波时用于接收信号的路线的电阻值。版权所有（C）2008，JPO＆INPIT

49. 发明专利

JP2008202815A Gas safety device 审中-公开
标题翻译：气体安全装置
公开(公告)号：JP2008202815A
公开(公告)日：2008-09-04
申请号：JP2007036523
申请日：2007-02-16
申请人： Aichi Tokei Denki Co Ltd , Toho Gas Co Ltd , Tokyo Gas Co Ltd , Toshiba Corp , 愛知時計電機株式会社 , 東京瓦斯株式会社 , 東邦瓦斯株式会社 , 株式会社東芝
发明人： MAOKA TADANORI , SAMEDA YOSHITOMI , TAKAHASHI YUKIO , NAKANO KENJI , UYAMA HIROTO , FUJIMOTO TATSUO , SUZUKI MAMORU , WATANABE AKIRA , YUASA KENICHIRO , NAGAI NOZOMI , KONO SACHIKO , SATO TAKAHITO , ISHIDA HIROSHI , HORI ITSURO
IPC分类号： F23N5/24 , F23K5/00 , G01F1/66 , G01F3/22
摘要： PROBLEM TO BE SOLVED: To provide a gas safety device which detects earthquake intensity at a proper place and cutting off a gas at a proper case.
SOLUTION: This gas safety device comprises a gas safety device main body 20, and one or more first earthquake sensors 30a generating a first abnormal signal by detecting occurrence of earthquake of a first prescribed earthquake intensity or more, and transmitting the first abnormal signal to the gas safety device main body by wireless communication, and the gas safety device main body 20 has: a gas supply line 50 for allowing a gas to flow; an ultrasonic flowmeter 22 for measuring a flow rate of the gas flowing in the gas supply line 50; a gas cutoff valve 24 for cutting off the gas flowing in the gas supply line 50; and a microcomputer 26 for controlling the gas cutoff valve 24 on the basis of the first abnormal signal transmitted from each of one or more first earthquake sensors 30a.
COPYRIGHT: (C)2008,JPO&INPIT
摘要翻译：要解决的问题：提供一种气体安全装置，其检测适当位置的地震强度并在适当的情况下切断气体。解决方案：该气体安全装置包括气体安全装置主体20和一个或多个第一地震传感器30a，通过检测第一规定地震烈度以上的地震的发生而产生第一异常信号，并且发送第一异常通过无线通信向燃气安全装置主体发出信号，气体安全装置主体20具有：用于使气体流动的气体供给管线50; 用于测量在气体供给管线50中流动的气体的流量的超声波流量计22; 用于切断在气体供给管线50中流动的气体的气体截断阀24; 以及微型计算机26，用于根据从一个或多个第一地震传感器30a中的每一个发送的第一异常信号来控制气体截止阀24。版权所有（C）2008，JPO＆INPIT

50. 发明专利

JP2008128824A Ultrasonic flow meter 审中-公开
标题翻译：超声波流量计
公开(公告)号：JP2008128824A
公开(公告)日：2008-06-05
申请号：JP2006314337
申请日：2006-11-21
申请人： Aichi Tokei Denki Co Ltd , Toho Gas Co Ltd , Tokyo Gas Co Ltd , Toshiba Corp , 愛知時計電機株式会社 , 東京瓦斯株式会社 , 東邦瓦斯株式会社 , 株式会社東芝
发明人： NAKANO KENJI , SAMEDA YOSHITOMI , TAKAHASHI YUKIO , MAOKA TADANORI , UYAMA HIROTO , FUJIMOTO TATSUO , SUZUKI MAMORU , KONO SACHIKO , NAGAI NOZOMI , YUASA KENICHIRO , ISHIDA HIROSHI , HIROYAMA TORU , HORI ITSURO
IPC分类号： G01F1/66 , G01F3/22
摘要： PROBLEM TO BE SOLVED: To provide an ultrasonic flow meter that will not cause wrong determination of equipment abnormalities and flow rate abnormalities, by speedily and accurately detecting a mixture of air and gas in fluid in a flow passage.
SOLUTION: The ultrasonic flowmeter has a pair of ultrasonic vibrators 110a, 110b installed separated by a fixed distance on the upstream side and on the downstream side of a gas flow passage 100c, in which a fluid to be measured flows; a time measurement means for measuring the propagation time of an ultrasonic signal which is transmitted and received between the pair of the ultrasonic vibrators; and a flow rate measurement means for measuring the flow rate of the fluid to be measured, based on the propagation time measured by the time measurement means. The ultrasonic flow meter includes a temperature sensor 160 for measuring the temperature in the gas flow passage 100c; a storing part 120 for storing, in advance, the propagation time data corresponding to the temperature of the fluid, when there is no mixture occurring in the fluid to be measured; and a mixture detection means for detecting whether a mixture is occurring in the fluid to be measured, based on the propagation time data stored by the storing part 120 and the propagation time measured by the time measurement means which corresponds to the temperature measured by the temperature sensor 160.
COPYRIGHT: (C)2008,JPO&INPIT
摘要翻译：要解决的问题：提供一种超声波流量计，其通过快速准确地检测流路中的流体中的空气和气体的混合物，不会导致设备异常和流量异常的错误判定。解决方案：超声波流量计具有在气体流路100c的上游侧和下游侧隔开一定距离地设置有被测量流体的超声波振子110a，110b，时间测量装置，用于测量在一对超声波振动器之间传输和接收的超声波信号的传播时间; 以及基于由时间测量装置测量的传播时间来测量待测流体的流量的流量测量装置。超声波流量计包括用于测量气体流路100c中的温度的温度传感器160; 存储部120，用于当不存在待测流体中的混合物时，预先存储对应于流体温度的传播时间数据; 以及混合检测装置，用于根据由存储部分120存储的传播时间数据和通过时间测量装置测量的传播时间来检测待测流体中是否发生混合物，该传播时间对应于由温度测量的温度传感器160.版权所有（C）2008，JPO＆INPIT

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