JP2000162004A - Ultrasonic flowmeter - Google Patents
Ultrasonic flowmeterInfo
- Publication number
- JP2000162004A JP2000162004A JP10355403A JP35540398A JP2000162004A JP 2000162004 A JP2000162004 A JP 2000162004A JP 10355403 A JP10355403 A JP 10355403A JP 35540398 A JP35540398 A JP 35540398A JP 2000162004 A JP2000162004 A JP 2000162004A
- Authority
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- Prior art keywords
- flow rate
- pipe
- fluid
- temperature
- temperature fluid
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Abstract
Description
【0001】[0001]
【発明の属する技術分野】本発明は超音波流量計、特に
高温流体の流量を測定できるようにした超音波流量計に
関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an ultrasonic flowmeter, and more particularly to an ultrasonic flowmeter capable of measuring a flow rate of a high-temperature fluid.
【0002】[0002]
【従来の技術】従来より、超音波センサを用いた計測機
器としては、例えば図3に示す超音波流量計がある。2. Description of the Related Art Conventionally, as an instrument using an ultrasonic sensor, for example, there is an ultrasonic flowmeter shown in FIG.
【0003】この超音波流量計は、図示するように、配
管30に、一組の対向する超音波センサ31、32が設
置され、流体の流れFlowの上流側の超音波センサ3
1と、下流側の超音波センサ32は、それぞれ所定の角
度θを以て取り付けられている。In this ultrasonic flow meter, as shown in the figure, a pair of opposed ultrasonic sensors 31 and 32 are installed in a pipe 30, and an ultrasonic sensor 3 upstream of a fluid flow Flow is provided.
1 and the ultrasonic sensor 32 on the downstream side are respectively attached at a predetermined angle θ.
【0004】この構成により、流れFlowに沿って上
流側センサ31から下流側センサ32へ発射される超音
波S1の伝播時間t1と、流体の流れFlowに逆らっ
て下流側センサ32から上流側センサ31へ発射される
超音波S2の伝播時間t2を計測する。[0004] With this configuration, the propagation time t1 of the ultrasonic wave S1 emitted from the upstream sensor 31 to the downstream sensor 32 along the flow Flow, and the upstream sensor 31 from the downstream sensor 32 against the flow Flow of the fluid. The propagation time t2 of the ultrasonic wave S2 radiated to is measured.
【0005】これにより、超音波センサ31、32間の
距離をLとして、センサ31、32間の流体の平均流速
V=L/2cosθ{(1/t1)−(1/t2)}を
求め、これに配管30の断面積、及び一定の補正係数を
掛けることにより、流体の流量を測定できることは、よ
く知られている。With the distance between the ultrasonic sensors 31 and 32 as L, the average flow velocity V = L / 2 cos θ {(1 / t1)-(1 / t2)} of the fluid between the sensors 31 and 32 is obtained. It is well known that the flow rate of the fluid can be measured by multiplying this by the cross-sectional area of the pipe 30 and a certain correction coefficient.
【0006】[0006]
【発明が解決しようとする課題】しかし、上記従来の技
術には、次のような課題がある。However, the above prior art has the following problems.
【0007】即ち、図3に示す従来の超音波流速計にお
いては、図示するように、配管30に取り付けられてい
る超音波センサ31、32の振動子は、それぞれ圧電体
であるセラミックにより形成されている。That is, in the conventional ultrasonic current meter shown in FIG. 3, the vibrators of the ultrasonic sensors 31 and 32 attached to the pipe 30 are each formed of a ceramic which is a piezoelectric material, as shown in FIG. ing.
【0008】ところが、このセラミックは、キューリ温
度以上の温度になると、圧電体としての特性が失われ、
電圧を印加しても、超音波を発振しなくなる。However, when the temperature of the ceramic becomes higher than the Curie temperature, the ceramic loses its properties as a piezoelectric material.
Even if a voltage is applied, the ultrasonic wave does not oscillate.
【0009】また、超音波センサ31、32は、振動子
を構成するセラミックと、そのセラミックを接着剤で取
り付けている筐体により形成されているが、一定の温度
以上になると、接着剤が溶けてしまい、超音波センサ3
1、32が正常に機能しなくなる。The ultrasonic sensors 31 and 32 are formed of a ceramic constituting a vibrator and a housing to which the ceramic is attached with an adhesive. However, when the temperature exceeds a certain temperature, the adhesive melts. And the ultrasonic sensor 3
1, 32 do not function properly.
【0010】このように、超音波センサ31、32に
は、所定の限界温度があり、それ以上の温度になると、
正常に動作しなくなる。As described above, the ultrasonic sensors 31 and 32 have a predetermined limit temperature.
It does not work properly.
【0011】従って、従来の超音波流速計においては、
自動車エンジンの排気ガス、溶鉱炉やゴミ処理場のよう
な加熱処理敷設から排出される熱風等の1000°C以
上の高温流体が配管30に流入し、所定の限界温度を越
えた場合には、超音波センサ31、32が正常に動作し
なくなり、高温流体の流量を正確に測定できない。Therefore, in the conventional ultrasonic current meter,
When a high-temperature fluid of 1000 ° C. or more, such as exhaust gas of an automobile engine, hot air discharged from a heat treatment laying such as a blast furnace or a garbage treatment plant, flows into the pipe 30 and exceeds a predetermined limit temperature, The sound wave sensors 31 and 32 do not operate normally, and the flow rate of the high-temperature fluid cannot be accurately measured.
【0012】本発明の目的は、高温流体の流量を正確に
測定できる超音波流量計を提供することにある。It is an object of the present invention to provide an ultrasonic flowmeter capable of accurately measuring the flow rate of a high-temperature fluid.
【0013】[0013]
【課題を解決するための手段】上記課題を解決するた
め、本発明は、図1〜図2に示すように、測定部配管2
を冷却水11に浸漬し、該測定部配管2に流入する高温
流体16の流量Q1 を、測定部配管2に取り付けられた
超音波センサ3、4を介して測定することを特徴とする
超音波流量計という技術的手段を講じている。In order to solve the above-mentioned problems, the present invention relates to a measuring section piping 2 as shown in FIGS.
Is immersed in cooling water 11 and the flow rate Q 1 of the high-temperature fluid 16 flowing into the measuring section piping 2 is measured via the ultrasonic sensors 3 and 4 attached to the measuring section piping 2. A technical measure called a sound wave flow meter is taken.
【0014】上記構成によれば、例えば図1に示すよう
に、冷却槽1に収納された冷却水11により、測定部配
管2全体が冷却されるので、たとえ超音波センサ3、4
の限界温度を越える高温流体16が測定部配管2に流入
しても、該高温流体16は、冷却されている測定部配管
2に進入すると低温流体17になり、該低温流体17の
流量Q0 は、超音波センサ3、4により測定できる。According to the above configuration, as shown in FIG. 1, for example, the entire measuring section pipe 2 is cooled by the cooling water 11 stored in the cooling tank 1.
Even if the high temperature fluid 16 exceeding the limit temperature flows into the measuring section piping 2, the high temperature fluid 16 becomes the low temperature fluid 17 when entering the cooled measuring section pipe 2, and the flow rate Q 0 of the low temperature fluid 17 Can be measured by the ultrasonic sensors 3 and 4.
【0015】従って、低温流体17の流量Q0 を、例え
ば演算部20により温度と圧力とを考慮して高温流体1
6の流量Q1 (図1)に変換すれば、以下に述べるよう
に、高温流体の流量を正確に測定できる超音波流量計を
提供することができる。Therefore, the flow rate Q 0 of the low-temperature fluid 17 is determined by, for example, the arithmetic unit 20 in consideration of the temperature and the pressure.
If converted to the flow rate Q 1 of FIG. 6 (FIG. 1), an ultrasonic flow meter capable of accurately measuring the flow rate of the high-temperature fluid can be provided as described below.
【0016】[0016]
【発明の実施の形態】以下、本発明を、実施形態により
添付図面を参照して、説明する。図1は本発明の構成を
示す図、図2は本発明の外観斜視図である。図1におい
て、参照符号1は冷却槽、2は測定部配管、3と4は超
音波センサ、5は上流配管、6は下流配管、7と9は圧
力センサ、8と10は温度センサ、20は演算部であ
る。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below by way of embodiments with reference to the accompanying drawings. FIG. 1 is a diagram showing the configuration of the present invention, and FIG. 2 is an external perspective view of the present invention. In FIG. 1, reference numeral 1 is a cooling tank, 2 is a measuring section pipe, 3 and 4 are ultrasonic sensors, 5 is an upstream pipe, 6 is a downstream pipe, 7 and 9 are pressure sensors, 8 and 10 are temperature sensors, 20 Is an operation unit.
【0017】(1)構成 図1に示す冷却槽1には、冷却水11が収納され、該冷
却水11は冷却槽1の給水口12から入り、排水口13
から排出され、常に一定の温度に維持されている。(1) Configuration In the cooling tank 1 shown in FIG. 1, cooling water 11 is stored. The cooling water 11 enters through a water supply port 12 of the cooling tank 1, and drains 13
And is constantly maintained at a constant temperature.
【0018】この冷却水11には、図示するように、測
定部配管2が浸漬され、該測定部配管2の外壁2Bに
は、超音波センサ3、4が取り付けられている。As shown in the drawing, a measuring part pipe 2 is immersed in the cooling water 11, and ultrasonic sensors 3 and 4 are attached to an outer wall 2B of the measuring part pipe 2.
【0019】この超音波センサ3、4は、後述する演算
部20に接続され、振動子3A、4Aが受波した受波信
号は、電気信号G1、G2に変換されて演算部20に入
力される。The ultrasonic sensors 3 and 4 are connected to a calculation unit 20 described later, and the received signals received by the transducers 3A and 4A are converted into electric signals G1 and G2 and input to the calculation unit 20. You.
【0020】これに基づいて低温流体17の流量Q0 を
測定し、それを一定の条件の下に変換することにより、
高温流体16の流量Q1 が測定されるようなっている。Based on this, the flow rate Q 0 of the low-temperature fluid 17 is measured and converted under a certain condition,
It has become so that the flow rate to Q 1 hot fluid 16 is measured.
【0021】上記記測定部配管2は、フランジ2Aを有
し、該フランジ2Aは、上流配管5のフランジ5Aと、
また他方のフランジ2Aは、下流配管6のフランジ6A
と、それぞれボルト14とナット15により結合されて
いる。The measuring section pipe 2 has a flange 2A, and the flange 2A is connected to a flange 5A of the upstream pipe 5;
Also, the other flange 2A is a flange 6A of the downstream pipe 6.
Are connected by a bolt 14 and a nut 15, respectively.
【0022】一方、冷却槽1には、開口部1A、1Bが
形成され、該開口部1A、1Bに沿って、防水シール1
8、19が施され、上記上流配管5と下流配管6は、そ
れぞれ防水シール18、19を介して、上記開口部1
A、1Bを貫通している。On the other hand, openings 1A and 1B are formed in the cooling tank 1, and the waterproof seal 1 is formed along the openings 1A and 1B.
8 and 19, and the upstream pipe 5 and the downstream pipe 6 are connected to the opening 1 through the waterproof seals 18 and 19, respectively.
A, 1B.
【0023】上流配管5には、排気ガス等の高温流体1
6が流入し、該高温流体16は、冷却水11に浸漬して
いる測定部配管2に進入すると低温流体17になり、下
流配管6から排出される。A high-temperature fluid 1 such as exhaust gas is
When the high-temperature fluid 16 enters the measuring part pipe 2 immersed in the cooling water 11, the high-temperature fluid 16 becomes the low-temperature fluid 17 and is discharged from the downstream pipe 6.
【0024】この上流配管5には、圧力センサ7と温度
センサ8が取り付けられ、圧力センサ7では高温流体1
6の圧力P1 が、また温度センサ8では高温流体16の
温度T1 がそれぞれ検出され、電気信号G3、G4に変
換されて演算部20に入力する。A pressure sensor 7 and a temperature sensor 8 are attached to the upstream pipe 5.
The pressure P 1 of 6, and the temperature T 1 of the hot fluid 16 in the temperature sensor 8 are detected respectively, it is converted into an electric signal G3, G4 and inputs to the arithmetic unit 20.
【0025】また下流配管6には、圧力センサ9と温度
センサ10が取り付けられ、圧力センサ9では低温流体
17の圧力P0 が、また温度センサ10では低温流体1
7の温度T0 がそれぞれ検出され、電気信号G5、G6
に変換されて演算部20に入力する。A pressure sensor 9 and a temperature sensor 10 are mounted on the downstream pipe 6. The pressure sensor 9 detects the pressure P 0 of the low-temperature fluid 17, and the temperature sensor 10 detects the low-temperature fluid 1.
Temperature T 0 of 7 are respectively detected, electrical signals G5, G6
And is input to the arithmetic unit 20.
【0026】演算部20は、既述した超音波センサ3、
4からの信号G1、G2、圧力センサ7、9からの信号
G3、G5、及び温度センサ8、10からの信号G4、
G6をそれぞれ入力し、低温流体17の流量Q0 を測定
すると共にそれを一定の条件の下に変換し、高温流体1
6の流量Q1 を測定する。The arithmetic unit 20 includes the ultrasonic sensor 3 described above,
4, G3 and G5 from the pressure sensors 7 and 9, and G4 and G4 from the temperature sensors 8 and 10,
G6 is input, and the flow rate Q 0 of the low-temperature fluid 17 is measured and converted under a certain condition.
The flow rate Q1 of No. 6 is measured.
【0027】また、演算部20は、図1の装置全体の制
御を掌どる。The arithmetic unit 20 controls the entire apparatus shown in FIG.
【0028】(2)作用 以下、上記構成を有する本発明の作用を説明する。(2) Operation The operation of the present invention having the above configuration will be described below.
【0029】(2)−A 測定部配管2の冷却 先ず、図1、図2に示すように、冷却槽1の給水口12
から冷却水11を入れ、排水口13から排水し、冷却槽
1を常に一定の温度に維持された冷却水11で満たして
おく。(2) -A Cooling of Measurement Section Pipe 2 First, as shown in FIGS.
, Cooling water 11 is drained from a drain port 13, and the cooling tank 1 is always filled with the cooling water 11 maintained at a constant temperature.
【0030】この状態で、測定部配管2を冷却水11に
浸漬すると、該測定部配管2とそれに取り付けられた超
音波センサ3、4は、一定の温度に冷却される。In this state, when the measuring section pipe 2 is immersed in the cooling water 11, the measuring section pipe 2 and the ultrasonic sensors 3 and 4 attached thereto are cooled to a constant temperature.
【0031】(2)−B 高温流体16の流入と低温化 上記のように測定部配管2全体が冷却されている状態
で、上流配管5に高温流体16を流入すると、該高温流
体16が測定部配管2に進入するにつれて低温流体17
になり、下流配管6から排出される。(2) -B Inflow of High-Temperature Fluid 16 and Lowering of Temperature When the high-temperature fluid 16 flows into the upstream pipe 5 in a state where the entire measurement section pipe 2 is cooled as described above, the high-temperature fluid 16 is measured. Low temperature fluid 17 as it enters
And discharged from the downstream pipe 6.
【0032】(2)−C 低温流体17の流量Q0 の測
定 測定部配管2には、既述したように超音波センサ3、4
が取り付けられ、高温流体16は、この測定部配管2に
進入すると低温流体17になる。(2) -C Measurement of Flow Rate Q 0 of Cryogenic Fluid 17 As described above, the ultrasonic sensors 3, 4
Is attached, and the high-temperature fluid 16 becomes a low-temperature fluid 17 when entering the measurement section piping 2.
【0033】従って、先ず、次のようにして、低温流体
17の流量Q0 を測定する。Therefore, first, the flow rate Q 0 of the low-temperature fluid 17 is measured as follows.
【0034】即ち、演算部20は、入力される受波信号
G1、G2に基づいて、低温流体17の流れに沿って上
流側センサ3から下流側センサ4へ発射される超音波S
1の伝播時間t1と、低温流体17の流れに逆らって下
流側センサ4から上流側センサ3へ発射される超音波S
2の伝播時間t2を計測する。That is, the arithmetic unit 20 receives the ultrasonic waves S emitted from the upstream sensor 3 to the downstream sensor 4 along the flow of the low-temperature fluid 17 based on the received wave signals G1 and G2.
1 and an ultrasonic wave S emitted from the downstream sensor 4 to the upstream sensor 3 against the flow of the low-temperature fluid 17.
2 is measured.
【0035】これにより、超音波センサ3、4間の距離
をL、両者の設置角度をθとして、演算部20は、セン
サ3、4間の低温流体17の平均流速V=L/2cos
θ{(1/t1)−(1/t2)}を求め、これに測定
部配管2の断面積、及び一定の補正係数を掛けることに
より、低温流体17の流量Q0 を測定する。Thus, assuming that the distance between the ultrasonic sensors 3 and 4 is L and the installation angle of both is θ, the arithmetic unit 20 calculates the average flow velocity V of the low-temperature fluid 17 between the sensors 3 and 4 = L / 2 cos
theta - seeking {(1 / t1) (1 / t2)}, the cross-sectional area of the measurement section pipe 2 to, and by applying predetermined correction coefficient, for measuring the flow rate Q 0 of the cryogen 17.
【0036】(2)−D 高温流体16の流量Q1 への
変換 一方、演算部20には、既述したように、圧力センサ7
で検出された高温流体16の圧力信号G3、温度センサ
8で検出された高温流体16の温度信号G4、圧力セン
サ9で検出された低温流体17の圧力信号G5、温度セ
ンサ10で検出された低温流体17の温度信号G6が、
それぞれ入力されている。(2) -D Conversion of high-temperature fluid 16 into flow rate Q 1 On the other hand, as described above, the arithmetic unit 20 includes the pressure sensor 7
, The temperature signal G4 of the high temperature fluid 16 detected by the temperature sensor 8, the pressure signal G5 of the low temperature fluid 17 detected by the pressure sensor 9, and the low temperature detected by the temperature sensor 10. The temperature signal G6 of the fluid 17 is
Each has been entered.
【0037】従って、(2)−Cで流量Q0 を測定した
低温流体17について、圧力をP0 、温度をT0 とし、
これから流量Q1 を求めようとする高温流体16につい
て、圧力をP1 温度をT1 とすれば、よく知られている
ように、Boyle−Charlesの法則により、流
量Q1 は、次式で換算される。Accordingly, (2) -C0Measured
For the cryogenic fluid 17, the pressure is P0 , Temperature T0age,
From now on the flow rate Q1For the high temperature fluid 16 for which
And the pressure is P1Temperature T1If you know
Thus, according to Boyle-Charles' law,
Quantity Q1Is converted by the following equation.
【0038】 Q1 =Q0 ×{(P0 /T0 )×(T1 /P1 )}・・・・Q 1 = Q 0 × {(P 0 / T 0 ) × (T 1 / P 1 )}
【0039】即ち、低温流体17の流量Q0 について
は、 Q0 ∝ T0 /P0 ・・・・・That is, for the flow rate Q 0 of the low temperature fluid 17, Q 0 TT 0 / P 0 ...
【0040】また、高温流体16の流量Q1 について
は、 Q1 ∝ T1 /P1 ・・・・・The flow rate Q 1 of the high-temperature fluid 16 is as follows: Q 1 TT 1 / P 1
【0041】従って、式と式から、式が導かれ、
高温流体16の流量Q1 が測定される。Therefore, the equation is derived from the equation and the equation,
Flow rate to Q 1 hot fluid 16 is measured.
【0042】尚、上記実施形態の説明に際しては、高温
流体16が排気ガスについて詳述したが、本発明はそれ
に限定されず、溶鉱炉やゴミ処理場のような加熱処理敷
設からの熱風、あるいはプラスチック成形工場から排出
される高温流体についても適用され、同様の効果を奏す
ることは勿論である。In the description of the above-described embodiment, the high-temperature fluid 16 has been described in detail with respect to exhaust gas. However, the present invention is not limited to this, and hot air from a blast furnace or a refuse treatment plant, The present invention is also applied to a high-temperature fluid discharged from a molding factory, and it is needless to say that the same effect is obtained.
【0043】[0043]
【発明の効果】上記のとおり、本発明によれば、超音波
流量計を、測定部配管を冷却水に浸漬し、該測定部配管
に流入する高温流体の流量を、測定部配管に取り付けら
れた超音波センサを介して測定するように構成したこと
により、測定部配管全体が冷却されるので、たとえ超音
波センサの限界温度を越える高温流体が測定部配管に流
入しても、該高温流体は、冷却されている測定部配管に
進入すると低温流体になり、該低温流体の流量は、超音
波センサにより測定できる。As described above, according to the present invention, the ultrasonic flowmeter can be mounted on the measuring part piping by immersing the measuring part piping in the cooling water and flowing the high-temperature fluid flowing into the measuring part piping. The configuration is such that the measurement is performed via the ultrasonic sensor, so that the entire measurement section piping is cooled, so that even if a high temperature fluid exceeding the limit temperature of the ultrasonic sensor flows into the measurement section piping, Enters a cooled measuring part pipe and becomes a low temperature fluid, and the flow rate of the low temperature fluid can be measured by an ultrasonic sensor.
【0044】従って、低温流体の流量を、温度と圧力と
を考慮して高温流体の流量に変換すれば、高温流体の流
量を正確に測定できるという技術的効果を奏することと
なった。Therefore, if the flow rate of the low-temperature fluid is converted into the flow rate of the high-temperature fluid in consideration of the temperature and the pressure, the technical effect that the flow rate of the high-temperature fluid can be accurately measured is obtained.
【0045】[0045]
【図1】本発明の構成を示す図である。FIG. 1 is a diagram showing a configuration of the present invention.
【図2】本発明の外観斜視図である。FIG. 2 is an external perspective view of the present invention.
【図3】従来技術の説明図である。FIG. 3 is an explanatory diagram of a conventional technique.
1 冷却槽 2 測定部配管 2A 測定部配管2のフランジ 2B 測定部配管2の外壁 3、4 超音波センサ 3A、4B 超音波センサ3、4の振動子 5 上流配管 5A 上流配管5のフランジ 6 下流配管 6A 下流配管6のフランジ 7、9 圧力センサ 8、10 温度センサ 11 冷却水 12 給水口 13 排水口 14 ボルト 15 ナット 16 高温流体 17 低温流体 18、19 防水シール 20 演算部 DESCRIPTION OF SYMBOLS 1 Cooling tank 2 Measurement part piping 2A Flange of measurement part piping 2 2B Outer wall of measurement part piping 3 4, 4 Ultrasonic sensors 3A, 4B Transducers of ultrasonic sensors 3, 4 5 Upstream piping 5A Flange of upstream piping 5 6 Downstream Pipe 6A Flange of downstream pipe 6 7, 9 Pressure sensor 8, 10 Temperature sensor 11 Cooling water 12 Water supply port 13 Drain port 14 Bolt 15 Nut 16 High temperature fluid 17 Low temperature fluid 18, 19 Waterproof seal 20 Operation unit
───────────────────────────────────────────────────── フロントページの続き (74)上記2名の代理人 100094064 弁理士 齊藤 明 (72)発明者 山崎 哲 茨城県つくば市梅園1丁目1番4 工業技 術院計量研究所内 (72)発明者 清水 和義 東京都羽村市栄町3−1−5 株式会社カ イジョー内 Fターム(参考) 2F035 DA07 DA19 ──────────────────────────────────────────────────続 き Continuing from the front page (74) The above two agents 100094064 Patent Attorney Akira Saito (72) Inventor Tetsu Yamazaki 1-1-4 Umezono, Tsukuba, Ibaraki Pref. Kazuyoshi Shimizu 3-1-5 Sakaemachi, Hamura-shi, Tokyo F-term in Kaijo Corporation (reference) 2F035 DA07 DA19
Claims (6)
配管に流入する高温流体の流量を、測定部配管に取り付
けられた超音波センサを介して測定することを特徴とす
る超音波流量計。1. An ultrasonic apparatus comprising: immersing a measuring part pipe in cooling water; and measuring a flow rate of a high-temperature fluid flowing into the measuring part pipe via an ultrasonic sensor attached to the measuring part pipe. Flowmeter.
配管に結合された上流配管と下流配管が上記冷却槽を貫
通している請求項1記載の超音波流量計。2. The ultrasonic flowmeter according to claim 1, wherein the cooling water is contained in a cooling tank, and an upstream pipe and a downstream pipe connected to a measuring section pipe penetrate the cooling tank.
圧力センサと温度センサが取り付けられている請求項1
記載の超音波流量計。3. A pressure sensor and a temperature sensor are attached to the upstream pipe and the downstream pipe, respectively.
An ultrasonic flowmeter as described.
度センサがそれぞれ演算部に接続され、該演算部によ
り、低温流体の流量を測定すると共に、該低温流体の流
量を高温流体の流量に変換することにより、高温流体の
流量を測定する請求項1記載の超音波流量計。4. The ultrasonic sensor, the pressure sensor, and the temperature sensor are each connected to an arithmetic unit, and the arithmetic unit measures the flow rate of the low-temperature fluid and converts the flow rate of the low-temperature fluid into the flow rate of the high-temperature fluid. The ultrasonic flowmeter according to claim 1, wherein the flow rate of the high-temperature fluid is measured by doing.
貫通する開口部が形成されていると共に、該開口部には
防水シールが施されている請求項1記載の超音波流量
計。5. The ultrasonic flowmeter according to claim 1, wherein an opening through which the upstream pipe and the downstream pipe penetrate is formed in the cooling tank, and the opening is provided with a waterproof seal.
フランジ、及び測定部配管のもう一方のフランジと下流
配管のフランジがそれぞれボルトとナットにより結合さ
れている請求項1記載の超音波流量計。6. The ultrasonic flowmeter according to claim 1, wherein the flange of the measuring section pipe and the flange of the upstream pipe, and the other flange of the measuring section pipe and the flange of the downstream pipe are respectively connected by bolts and nuts. .
Priority Applications (1)
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---|---|---|---|
JP35540398A JP3275011B2 (en) | 1998-11-30 | 1998-11-30 | Ultrasonic flow meter |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP35540398A JP3275011B2 (en) | 1998-11-30 | 1998-11-30 | Ultrasonic flow meter |
Publications (2)
Publication Number | Publication Date |
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JP2000162004A true JP2000162004A (en) | 2000-06-16 |
JP3275011B2 JP3275011B2 (en) | 2002-04-15 |
Family
ID=18443746
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JP35540398A Expired - Fee Related JP3275011B2 (en) | 1998-11-30 | 1998-11-30 | Ultrasonic flow meter |
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Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2014157907A1 (en) | 2013-03-25 | 2014-10-02 | 주식회사 우진 | High temperature ultrasonic sensor and manufacturing method therefor |
-
1998
- 1998-11-30 JP JP35540398A patent/JP3275011B2/en not_active Expired - Fee Related
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2014157907A1 (en) | 2013-03-25 | 2014-10-02 | 주식회사 우진 | High temperature ultrasonic sensor and manufacturing method therefor |
US9494453B2 (en) | 2013-03-25 | 2016-11-15 | Woojin Inc. | Ultrasonic sensor for high temperature and manufacturing method thereof |
Also Published As
Publication number | Publication date |
---|---|
JP3275011B2 (en) | 2002-04-15 |
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