Development of Plus Ultrasonic Doppler Method for Flow Rate Measurements of Power Plant: Multiline Flow Rate Measurement for Non Developed Flow

2002 ◽  
Author(s):  
Hiroshige Kikura ◽  
Sanehiro Wada ◽  
Masanori Aritomi ◽  
Michitsugu Mori ◽  
Yasushi Takeda
Keyword(s):  
Power Plant ◽  
Flow Rate ◽  
Transient Flow ◽  
Rate Measurement ◽  
Flow Rate Measurement ◽  
Vertical Pipe ◽  
Entry Length ◽  
Doppler Method ◽  
Flow Metering ◽  
Measuring Lines

Flow metering system is being developed using plus ultrasonic Doppler method. The principle is an integration of instantaneous velocity profile over a pipe diameter so that it is expected to be able to eliminate installation problems such as entry length as well as to follow transient flow rate precisely. Flow metering principle by plus ultrasonic Doppler method in a circular pipe depends on the alignment of measuring lines. In this paper, influence of number of measuring lines on the flow rate measurements for power plant have been investigated for non developed flows in a vertical pipe.

Development of Pulse Ultrasonic Doppler Method for Flow Rate Measurements of Power Plant: Characteristics of Sound Pressure Distributions and Evaluation of the Hybrid Ultrasonic Flowmetering System Using TOF and UDM

2006 ◽  
Author(s):  
Hiroshige Kikura ◽  
Yuto Inoue ◽  
Masanori Aritomi ◽  
Michitsugu Mori
Keyword(s):  
Velocity Profile ◽  
Ultrasonic Velocity ◽  
Flow Rate ◽  
Time Of Flight ◽  
Velocity Profiles ◽  
Instantaneous Velocity ◽  
Rate Measurement ◽  
Flow Rate Measurement ◽  
Doppler Method ◽  
Flow Metering

A multi-beam pulse ultrasonic Doppler method has been developed for a new type of flow metering system. This new system is a hybrid of the time-of-flight type ultrasonic flowmeter and the ultrasonic velocity profile type flowmeter, having 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- or recirculation- water in nuclear power plants. The pulse ultrasonic Doppler method (UDM) has the capability to obtain instantaneous velocity profiles along an ultrasonic beam. The principle of the UDM flowmeter, which is one of the ultrasonic velocity profile type flowmeters, 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 those of entry length, and also to follow transient flow rate more precisely by increasing the number of ultrasonic transducers. However, it needs reflectors for receiving ultrasonic Doppler signals. On the other hand, the time-of-flight (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 adjust the profile factors of the time-of-flight ultrasonic flow meters by using the multi-beam pulse ultrasonic Doppler method in metallic wall piping.

scholarly journals Development of Pulse Ultrasonic Doppler Method for Flow Rate Measurement in Power Plant Multilines Flow Rate Measurement on Metal Pipe

2004 ◽  
Vol 41 (3) ◽  
pp. 339-346 ◽  
Author(s):  
Sanehiro WADA ◽  
Hiroshige KIKURA ◽  
Masanori ARITOMI ◽  
Michitsugu MORI ◽  
Yasushi TAKEDA
Keyword(s):  
Power Plant ◽  
Flow Rate ◽  
Rate Measurement ◽  
Flow Rate Measurement ◽  
Doppler Method ◽  
Metal Pipe

F112 Development of multi-wave ultrasonic pulsed Doppler method for higher flow rate measurement

2015 ◽  
Vol 2015.20 (0) ◽  
pp. 141-142
Author(s):  
Ei MURAMATSU ◽  
Hideki MURAKAWA ◽  
Katsumi SUGIMOTO ◽  
Nobuyuki TAKENAKA ◽  
Noriyuki FURUICHI
Keyword(s):  
Flow Rate ◽  
Pulsed Doppler ◽  
Rate Measurement ◽  
Flow Rate Measurement ◽  
Doppler Method

scholarly journals Multiline flow rate measurement using ultrasonic Doppler method

2003 ◽  
Vol 2003 (0) ◽  
pp. 32 ◽  
Author(s):  
Sanehiro WADA ◽  
Hiroshige KIKURA ◽  
Masanori ARITOMI ◽  
Yasushi TAKEDA ◽  
Michitsugu MORI
Keyword(s):  
Flow Rate ◽  
Rate Measurement ◽  
Flow Rate Measurement ◽  
Doppler Method
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