Development of hybrid feed water flow rate measurement system for light water reactors of nuclear power plants using pulse Ultrasound

脉冲超声核电站轻水堆混合给水流量测量系统的开发

• 批准号: 15360501
• 负责人: KIKURA Hiroshige
• 金额: $ 9.86万
• 依托单位: Tokyo Institute of Technology
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (B)
• 财政年份: 2003
• 资助国家: 日本
• 起止时间: 2003 至 2005
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-15360501/
• 关键词: Hybrid type ultrasonic flow measurement method; Flow rate measurement; Ultrasonic measurement; Pulse ultrasound; Ultrasonic time domain correlation method; Multi-lines method; Fully developed flow; Time of flight ultrasonic flow meter; パルス超音波のドップラ

A new feed water flow rate measurement system for light water reactors of nuclear power plants using pulse Ultrasound has been developed for a new type of flow metering system. This new system is a hybrid of the time-of-flight (TOF) type ultrasonic flowmeter and the ultrasonic velocity profile type flowmeter with the advantages of these two types. Our final purpose is to apply the hybrid ultrasonic flow metering system to an accurate flow rate measurement of feed- water in nuclear power plants. The ultrasonic velocity profile type flowmeter called the UDM flowmeter is based on the pulse ultrasonic Doppler method (UDM) which has the capability to obtain instantaneous velocity profiles along an ultrasonic beam. The principle of the UDM flow metering system is based on the integration of an instantaneous velocity profile over a pipe diameter. The multi-beam system is expected to eliminate installation problems such as entry length, and also to follow transient flow rate precisely by incre … More asing the number of ultrasonic transducers. However, it needs reflectors for receiving ultrasonic Doppler signals. On the other hand, the TOF ultrasonic flow metering system does not need any reflector, but it needs profile factors (PFs) which depend on velocity profiles. PF is one of the important experimental coefficients for the accurate flow rate measurement. Therefore PFs must be corrected according to the changes in flow conditions. In the present study, we investigated to what degree the hybrid ultrasonic flow metering system can correct the profile factors of TOF ultrasonic flow meters by using the UDM.As results, the laboratory experiments appeared that for fully developed flow condition an accurate measurement of flow rate was achievable using only a single measuring line, and additionally, for non developed flow which is located just below the bend pipe the multi-lines method was successfully applied and the errors were less than 1%. The reflector of ultrasound was obtained very efficiently using ultrasonic cavitation bubbles. Even for the metallic wall pipe, it was appeared that cavitation bubbles were available to measure the instantaneous velocity profile and the flow rate accurately compared with using nylon powder. As mentioned above, it is indicated that the present multi-lines flow metering system by using ultrasonic Doppler method has very high accuracy under non-ideal flow conditions such as non-developed flow or non-axis-symmetric flow. And we constructed the basic system of a flow rate measurement in power plants using metallic pipes and cavitation bubbles as ultrasound reflectors. And according to the results of this experiment, deviation of PFs could be around 2-6% at maximum, which directly affects the estimation of flow rates. However by calibration with UDM measurement PFs could be better within ±1%. Less

为新型的流动计量系统开发了一种使用脉冲超声的新的进料水流量测量系统。这个新系统是飞行时间（TOF）类型超声流量计和超声速度剖面型流量计的混合体，具有这两种类型的优势。我们的最终目的是将杂化超声流量计量系统应用于核电站进料水的准确流速测量。称为UDM流量计的超声速度轮廓类型流量计基于脉冲超声多普勒方法（UDM），该方法具有沿超声波束获得瞬时速度曲线的能力。 UDM流量计量系统的原理基于管道直径上瞬时速度曲线的整合。预计多光束系统将消除安装问题，例如进入长度，并通过增加超声传感器的数量来精确地遵循瞬态流量。但是，它需要接收超声波多普勒信号的反射器。另一方面，TOF超声流量计量系统不需要任何反射器，但是它需要依赖速度曲线的轮廓因素（PFS）。 PF是精确流速测量的重要实验系数之一。因此，必须根据流量条件的变化来校正PF。在本研究中，我们研究了混合超声流量测光系统可以在多大程度上纠正TOF超声流量计的轮廓因子，并使用UDM。作为结果，实验室实验似乎是，对于完全开发的流动条件，准确的流量成功的流速仅使用单个测量线，而不是在多个弯曲的地方进行了多个弯曲的方法。使用超声气泡气泡非常有效地获得了超声的反射器。即使对于金属壁管，似乎也可以使用空化气泡来测量瞬时速度曲线，并且与使用尼龙粉末相比，可以准确地进行流速。如上所述，据表明，在非理想流动条件（例如非发育流量或非轴对称流动流量）下，使用超声多普勒方法使用超声多普勒方法的当前多线流量计量系统具有很高的精度。然后，我们使用金属管和空化气泡作为超声反射器构建了电厂中流速测量的基本系统。根据该实验的结果，PFS的偏离可能最大约为2-6％，这直接影响流速的估计。但是，通过使用UDM测量的校准PFS可以在±1％以内更好。较少的

项目成果

和田守弘, 木倉宏成, 有冨正憲, 武田靖, 森 治嗣: "超音波ドップラ流速分布測定法を用いた複測定線流量計測法"第81期日本機械学会流体工学部門講演会講演概要集, 大阪. 32 (2003)

Morihiro Wada、Hiroshige Kikura、Masanori Aritomi、Yasushi Takeda、Haritsugu Mori：“使用超声波多普勒流速分布测量方法的双测量线流量测量方法”第 81 届日本机械工程学会流体工程学会论文集，大阪 32（ 2003）

S.WADA, H.KIKURA, M.ARITOMI, M.MORI, Y.TAKEDA: "Development of Pulse Ultrasonic Doppler Method for Flow Rate Measurements of Power Plant(Multiline Flow Rate Measurement On Metal Pipe Flow)"11th International Conference on Nuclear Engineering(ICONE-11), To

S.WADA、H.KIKURA、M.ARITOMI、M.MORI、Y.TAKEDA：“发电厂流量测量脉冲超声波多普勒方法的开发（金属管流多线流量测量）”第11届国际核会议

Industrial Applications of New Type Flow-metering System by Ultrasonic-Doppler Profile-Velocimetry (1) Effects of Surface Roughness and Asymmetric Pipe Flow on Accuracy of Profile Factor

新型超声波多普勒轮廓测速流量测量系统的工业应用 (1) 表面粗糙度和不对称管流对轮廓系数精度的影响

• 发表时间: 2004
• 期刊: Proceedings of 4th International Symposium on Ultrasonic Doppler Methods for Fluid Mechanics and Fluid Engineering, Sapporo, Japan
• 作者: K.Tezuka;M.Mori;Y.Takeda;M.Aritomi;H.Kikura
• 通讯作者: H.Kikura

Effect of Measurement Volume on Turbulent Flow Measurement using Ultrasonic Doppler Method

测量体积对超声多普勒法湍流测量的影响

• 发表时间: 2004
• 期刊: Experiments in Fluids 36-1
• 作者: H.KIKURA;YAMANAKA;H.MURAKAWA;M.ARITOMI
• 通讯作者: M.ARITOMI

Development of Pulse Ultrasonic Doppler Method for Flow Rate Measurements of Power Plant (Application of Top and UDM to Hybrid Type System)

脉冲超声多普勒法电厂流量测量的研制（Top和UDM在混合型系统中的应用）

• 发表时间: 2005
• 期刊: Proceedings 13th International Conference on Nuclear Engineering, Beijing China, (2005-5) ICONE13-50806(CD-ROM)
• 作者: H.Kikura;Y.Inoue;S.Wada;M.Aritomi;M.Mori
• 通讯作者: M.Mori