JP2008122317A5 - - Google Patents

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Publication number
JP2008122317A5
JP2008122317A5 JP2006309084A JP2006309084A JP2008122317A5 JP 2008122317 A5 JP2008122317 A5 JP 2008122317A5 JP 2006309084 A JP2006309084 A JP 2006309084A JP 2006309084 A JP2006309084 A JP 2006309084A JP 2008122317 A5 JP2008122317 A5 JP 2008122317A5
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JP
Japan
Prior art keywords
ultrasonic
reflector
receivers
gas
flowmeter
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Application number
JP2006309084A
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Japanese (ja)
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JP4939907B2 (en
JP2008122317A (en
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Priority to JP2006309084A priority Critical patent/JP4939907B2/en
Priority claimed from JP2006309084A external-priority patent/JP4939907B2/en
Publication of JP2008122317A publication Critical patent/JP2008122317A/en
Publication of JP2008122317A5 publication Critical patent/JP2008122317A5/ja
Application granted granted Critical
Publication of JP4939907B2 publication Critical patent/JP4939907B2/en
Expired - Fee Related legal-status Critical Current
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Claims (4)

測定すべき気体を流す測定用管体の流れ方向の上流側と下流側とに一対の超音波送受信器を配置すると共に、これらの超音波送受信器の間の前記管体内に超音波反射体を取り付け、前記一方の超音波送受信器から発信した超音波ビームが前記反射体で反射して前記他方の超音波送受信器に伝播する気体用超音波流量計において、前記超音波反射体の反射面は前記超音波送受信器同士を結ぶ線を主軸とする楕円形の一部とし、前記超音波送受信器のそれぞれを前記楕円形の焦点位置に配置したことを特徴とする気体用超音波流量計。   A pair of ultrasonic transmitters / receivers are arranged on the upstream side and the downstream side in the flow direction of the measurement tube through which the gas to be measured flows, and an ultrasonic reflector is placed in the tube between these ultrasonic transmitters / receivers. In the ultrasonic flowmeter for gas in which the ultrasonic beam transmitted from the one ultrasonic transceiver is reflected by the reflector and propagated to the other ultrasonic transceiver, the reflection surface of the ultrasonic reflector is An ultrasonic flowmeter for gas, characterized in that a part of an ellipse whose main axis is a line connecting the ultrasonic transmitters / receivers is disposed, and each of the ultrasonic transmitters / receivers is arranged at the focal point of the ellipse. 前記反射面は楕円球面の一部としたことを特徴とする請求項１に記載の気体用超音波流量計。   The ultrasonic flowmeter for gas according to claim 1, wherein the reflecting surface is a part of an elliptical spherical surface. 前記反射面は楕円柱面の一部としたことを特徴とする請求項１に記載の気体用超音波流量計。   The ultrasonic flowmeter for gas according to claim 1, wherein the reflection surface is a part of an elliptic cylinder surface. 流速が零のときに、前記超音波反射体に前記超音波ビームが入射する位置を中心として、前記超音波反射体の下流側の管軸方向の長さを上流側よりも大きくしたことを特徴とする請求項１〜３の何れか１つの請求項に記載の気体用超音波流量計。 When the flow velocity is zero, the length in the tube axis direction on the downstream side of the ultrasonic reflector is made larger than the upstream side, with the position where the ultrasonic beam is incident on the ultrasonic reflector as the center. The ultrasonic flowmeter for gas according to any one of claims 1 to 3 .
JP2006309084A 2006-11-15 2006-11-15 Ultrasonic flow meter for gas Expired - Fee Related JP4939907B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2006309084A JP4939907B2 (en) 2006-11-15 2006-11-15 Ultrasonic flow meter for gas

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2006309084A JP4939907B2 (en) 2006-11-15 2006-11-15 Ultrasonic flow meter for gas

Publications (3)

Publication Number Publication Date
JP2008122317A JP2008122317A (en) 2008-05-29
JP2008122317A5 true JP2008122317A5 (en) 2010-03-25
JP4939907B2 JP4939907B2 (en) 2012-05-30

Family

ID=39507216

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2006309084A Expired - Fee Related JP4939907B2 (en) 2006-11-15 2006-11-15 Ultrasonic flow meter for gas

Country Status (1)

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JP (1) JP4939907B2 (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8700344B2 (en) 2011-04-20 2014-04-15 Neptune Technology Group Inc. Ultrasonic flow meter
JP5875999B2 (en) 2013-03-21 2016-03-02 アズビル株式会社 Ultrasonic flow meter, fluid velocity measuring method, and fluid velocity measuring program
PL3665442T3 (en) 2017-08-08 2022-01-17 Gwf Messsysteme Ag Flow meter
CN108759946A (en) * 2018-08-08 2018-11-06 北京名旭测控科技有限公司 A kind of ultrasonic wave gas meter reflection runner focused using elliptical shape ball solid
MX2020011238A (en) 2019-10-31 2022-02-10 Neptune Tech Group Inc Unitized measuring element for water meter assembly.

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5516433A (en) * 1978-07-21 1980-02-05 Fujitsu Ltd Method of forming multilayer distributing layer
JP2002139358A (en) * 2000-11-01 2002-05-17 Fuji Electric Co Ltd Ultrasonic flowmeter

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