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1. 发明授权

US5691485A Coaxial double tube type Coriolis flowmeter 失效
标题翻译：同轴双管型科里奥利流量计
公开(公告)号：US5691485A
公开(公告)日：1997-11-25
申请号：US462734
申请日：1995-06-05
申请人： Takashi Endo , Kenichi Matsuoka , Kimihiro Ichinose , Hidemi Seki , Shingo Gomi
发明人： Takashi Endo , Kenichi Matsuoka , Kimihiro Ichinose , Hidemi Seki , Shingo Gomi
IPC分类号： G01F1/84
CPC分类号： G01F1/8409 , G01F1/8413 , G01F1/8418 , G01F1/849
摘要： Disclosed is a Coriolis flowmeter which is capable of detecting a mass flow and a density of fluid with an increased stability by resonantly oscillating a double tube portion consisting of an inner flow tube allowing fluid to flow therein and a coaxially disposed thereon counterbalance tube provided with a weight for equalizing the lateral natural frequency of the counterbalance tube with that of the flow tube. The Coriolis flowmeter has supporting metal means for supporting the both ends of the flow tube in such a way that the both ends of the flow tube is restricted in radial directions and axially movable in respective connecting flange; the inner flow tube has extending ends enlarged in diameter and supported in the respective connecting flanges of the outer housing. The flow tube is further supported at near-to-end portions on respective rectangle leaf springs having a plane parallel to oscillating direction and extending in radial direction of the double tube portion being perpendicular to the oscillating direction within the outer housing. The flow tube is thus supported at four stable points representing oscillating nodes, axially movable but radially restricted, assuring stable oscillation and accurate measurement of mass flow.
摘要翻译：公开了一种科里奥利流量计，其能够通过共振振荡由允许流体流入其中的内部流管和由同轴设置的平衡管组成的双管部分共振振荡来检测流体的质量流量和密度，并提供稳定性，用于使平衡管的横向固有频率与流动管的侧向固有频率相等。科里奥利流量计具有用于支撑流管的两端的支撑金属装置，使得流管的两端在径向方向上受到限制，并在相应的连接凸缘中可轴向移动; 内流管具有直径增大的延伸端，并支撑在外壳的相应的连接凸缘中。流管在靠近振荡方向的平面的矩形片弹簧的近端部进一步被支撑，并且在双壳部分的径向方向上垂直于外壳内的摆动方向延伸。因此，流管被支撑在表示振动节点的四个稳定点处，轴向可移动但径向限制，确保稳定的振荡和质量流量的精确测量。

2. 发明授权

US5796012A Error correcting Coriolis flowmeter 失效
标题翻译：科里奥利流量计误差校正
公开(公告)号：US5796012A
公开(公告)日：1998-08-18
申请号：US788119
申请日：1997-01-23
申请人： Shingo Gomi , Hirokazu Kitami , Takashi Endo , Kenichi Matsuoka , Kimihiro Ichinose , Osamu Futagawa , Seiji Kobayashi , Kazuhide Kobayashi
发明人： Shingo Gomi , Hirokazu Kitami , Takashi Endo , Kenichi Matsuoka , Kimihiro Ichinose , Osamu Futagawa , Seiji Kobayashi , Kazuhide Kobayashi
IPC分类号： G01F1/84
CPC分类号： G01F1/8413 , G01F1/8418 , G01F1/8436 , G01F1/849
摘要： A resonantly drivable straight tube type Coriolis flowmeter which is capable of correcting instrumental errors caused by a change in density and temperature of measurable fluid. A coaxial double tube body that is composed of an inner tube wherein fluid to be measured flows and an outer tube with a balance weight attached thereto for equalizing natural frequencies of the inner and outer tubes is driven at a resonant frequency having a constant amplitude. A change of fluid density causes a change of amplitude ratio of the inner tube and the outer tube, resulting in shifting of an instrumental error. At this time, a resonant frequency detecting circuit detects a resonant frequency without detecting the amplitude ratio. An instrumental error detecting circuit stores a relation between resonant frequencies and fluid densities and a relation between fluid densities and instrument errors and conducts correction of an instrumental error according to the detected resonant frequency. An instrumental error caused by thermal deformation of the inner tube and the outer tube which are different from each other in material and shape can be also corrected by using similar correcting means.
摘要翻译：可共振驱动的直管式科里奥利流量计，其能够校正由可测量流体的密度和温度变化引起的仪器误差。一个同轴双管体，由其中待测量的流体流过的内管和连接有平衡重的外管组成，用于使内管和外管的固有频率均衡，以恒定振幅的共振频率被驱动。流体密度的变化导致内管和外管的振幅比的变化，导致仪器误差的偏移。此时，谐振频率检测电路在不检测振幅比的情况下检测谐振频率。仪器误差检测电路存储共振频率和流体密度之间的关系以及流体密度与仪器误差之间的关系，并根据检测到的共振频率进行仪器误差的校正。也可以通过使用类似的校正装置来校正由内管和外管在材料和形状上彼此不同的热变形引起的仪器误差。

3. 发明授权

US06336369B1 Straight double-tube type coriolis flow meter 有权
标题翻译：直型双管型科里奥利流量计
公开(公告)号：US06336369B1
公开(公告)日：2002-01-08
申请号：US09381608
申请日：1999-09-22
申请人： Shingo Gomi , Kimihiro Ichinose , Osamu Futagawa , Kazuhide Kobayashi
发明人： Shingo Gomi , Kimihiro Ichinose , Osamu Futagawa , Kazuhide Kobayashi
IPC分类号： G01F184
CPC分类号： G01F1/8409 , G01F1/8413 , G01F1/8418 , G01F1/849
摘要： A double-tube type Coriolis flow meter is provided for measuring mass flow. The flow meter includes a straight flow tube (4) through which the fluid being measured flows, a hollow outer tube (5) secured at both ends thereof to act as a counterbalance, a drive unit (7), and a pair of sensors. The flow tube (4) is caused to vibrate by the drive unit (7) so that the mass flow of the fluid is measured by detecting a phase difference proportional to Coriolis force acting on the flow tube (4) by the sensors. Sheet members (coupling plates 6) secure the flow tube (4) to both ends of the outer tube (5) and integrally form the coupling plate (6) with tube-assembly supporting leaf springs (14) in the double-tube type Coriolis flow meter. By connecting the flow tube to the outer tube via the sheet members in this manner, stresses produced between the tubes are absorbed and a uniform temperature distribution is maintained in the outer tube and manufacturing costs are reduced.
摘要翻译：提供双管式科里奥利流量计用于测量质量流量。流量计包括直流管（4），流体被测量流过该直流管（4），固定在两端的中空外管（5）作为平衡体，驱动单元（7）和一对传感器。通过驱动单元（7）使流动管（4）振动，从而通过检测与由传感器作用在流管（4）上的科里奥利力成比例的相位差来测量流体的质量流量。板构件（联接板6）将流动管（4）固定到外管（5）的两端并且一体地形成联接板（6），其中管组件支撑板簧（14）在双管型科里奥利流量计通过以这种方式通过片状构件将流管连接到外管，在管之间产生的应力被吸收，并且在外管中保持均匀的温度分布，并且制造成本降低。

4. 发明授权

US5317895A Flowmeter proving apparatus 失效
标题翻译：流量计验证装置
公开(公告)号：US5317895A
公开(公告)日：1994-06-07
申请号：US33998
申请日：1993-03-19
申请人： Yutaka Ogawa , Kimihiro Ichinose
发明人： Yutaka Ogawa , Kimihiro Ichinose
IPC分类号： G01F25/00
CPC分类号： G01F25/0015 , G01F25/0007
摘要： A flowmeter proving apparatus for obtaining a reliable flow meter factor in a short time, using a flow-meter having a non-uniform pulse output with a small volume power. The flowmeter to be proved is connected in series with a small volume prover, using a by-pass valve. A CPU calculates irregularities of meter pulse spacing, determines the repeatability for a proving run from the number of counted meter pulses and a function given by the meter pulse number and the meter pulse space irregularity. The CPU then computes the proving pass number N.sub.p necessary for obtaining the required repeatability by substituting the repeatability value into another predetermined function.
摘要翻译：一种用于在短时间内使用具有小体积功率的具有不均匀脉冲输出的流量计来获得可靠的流量计因子的流量计验证装置。要证明的流量计使用旁通阀与小体积证明器串联连接。 CPU计算仪表脉冲间隔的不规则度，从计数仪表脉冲数和由仪表脉冲数和仪表脉冲空间不规则度给出的函数确定证明运行的重复性。然后CPU通过将重复性值代入另一预定功能来计算获得所需重复性所需的证明密码Np。

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