JPH095133A - Ultrasonic flow meter - Google Patents
Ultrasonic flow meterInfo
- Publication number
- JPH095133A JPH095133A JP7158977A JP15897795A JPH095133A JP H095133 A JPH095133 A JP H095133A JP 7158977 A JP7158977 A JP 7158977A JP 15897795 A JP15897795 A JP 15897795A JP H095133 A JPH095133 A JP H095133A
- Authority
- JP
- Japan
- Prior art keywords
- flow rate
- chamber
- ultrasonic
- downstream chamber
- upstream chamber
- 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.)
- Granted
Links
Landscapes
- Measuring Volume Flow (AREA)
Abstract
(57)【要約】
【目的】 測定流路を着脱可能に構成して、広範囲の流
量計測を可能にする。
【構成】 着脱可能に構成した複数の流量測定部６ａ、
６ｂ、６ｃと、これら流量測定部６ａ〜６ｃを挟みそれ
ぞれ対応して配置された超音波振動子が設けられてい
る。また、これら振動子の信号を基に流量を算出する流
量演算部が設けられている。これによって超音波振動子
と流量演算部との接続を切換器により順次切換え、その
総和としての流量を計測することができる。
(57) [Summary] [Purpose] The measurement flow path is configured to be removable so that a wide range of flow rates can be measured. [Structure] A plurality of detachable flow rate measuring units 6a,
The ultrasonic transducers 6b and 6c and the ultrasonic transducers arranged corresponding to the flow rate measuring units 6a to 6c are provided. Further, a flow rate calculation unit for calculating the flow rate based on the signals of these vibrators is provided. As a result, the connection between the ultrasonic transducer and the flow rate calculation unit can be sequentially switched by the switch, and the total flow rate can be measured.
Description
【０００１】[0001]
【産業上の利用分野】本発明は、超音波により流量の計
測を行う流量計に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a flow meter for measuring a flow rate by ultrasonic waves.
【０００２】[0002]
【従来の技術】従来のこの種の計測装置として、図１２
に示すように、入口流路１と、出口流路２との間に斜め
方向に超音波流量計測部３を設け、入口流路１と超音波
流量計測部３との間に止め弁４、圧力調整器５を配置し
たものがあった。2. Description of the Related Art FIG.
As shown in FIG. 3, an ultrasonic flow rate measuring unit 3 is provided in an oblique direction between the inlet flow channel 1 and the outlet flow channel 2, and a stop valve 4 is provided between the inlet flow channel 1 and the ultrasonic flow rate measuring unit 3. There was one in which the pressure regulator 5 was arranged.
【０００３】[0003]
【発明が解決しようとする課題】しかしながら、この場
合、全体の測定系は定められた寸法に固定されているた
め、流量レンジが変わるとそのレンジに対応した大きさ
になる様、測定系全体を新たに設計製作せねばならず、
汎用性に欠けるものであった。However, in this case, since the entire measuring system is fixed to a predetermined size, the entire measuring system is changed so that the size corresponding to the range changes when the flow rate range changes. I have to design and manufacture a new one,
It lacked versatility.
【０００４】本発明は上記課題を解決するもので、測定
流路をブロック的に着脱可能に形成することにより、他
の部品に大幅な設計変更を施す事なく、広範囲の流量レ
ンジに対応して流量計測できる汎用性の高い流量計を提
供することを目的としている。The present invention solves the above-mentioned problems, and by forming the measurement flow path in a block-like manner so as to be removable, it is possible to cope with a wide range of flow rates without making major design changes to other parts. The purpose is to provide a highly versatile flow meter capable of measuring flow rate.
【０００５】[0005]
【課題を解決するための手段】本発明は、上流室と、下
流室と、その両端が前記上流室と前記下流室に対して連
通するとともに着脱可能に形成され、一対の超音波振動
子を配置した少なくとも一つの流量測定部と、前記上流
室に接続された入口部と、前記下流室に接続された出口
部と、前記超音波振動子からの信号を基に流量を算出す
る流量演算部と、前記超音波振動子と前記流量演算部と
の接続を切換える切換部より構成したものである。According to the present invention, there is provided an upstream chamber, a downstream chamber and a pair of ultrasonic transducers, both ends of which are connected to the upstream chamber and the downstream chamber and are detachable. At least one flow rate measuring unit arranged, an inlet unit connected to the upstream chamber, an outlet unit connected to the downstream chamber, and a flow rate calculating unit for calculating a flow rate based on a signal from the ultrasonic transducer. And a switching unit for switching the connection between the ultrasonic transducer and the flow rate calculation unit.
【０００６】また、上流室と、下流室と、その両端が前
記上流室と前記下流室に対して連通するごとく一体的に
形成され、一対の超音波振動子を配置した流量測定部
と、その両端が前記上流室と前記下流室に対して連通す
るとともに着脱可能に形成され、一対の超音波振動子を
配置した少なくとも一つの流量測定部と、前記上流室に
接続された入口部と、前記下流室に接続された出口部
と、前記超音波振動子からの信号を基に流量を算出する
流量演算部と、前記超音波振動子と前記流量演算部との
接続を切換える切換部より構成したものである。Further, an upstream chamber, a downstream chamber, and a flow rate measuring unit in which both ends are integrally formed so as to communicate with the upstream chamber and the downstream chamber, and a pair of ultrasonic transducers are arranged, Both ends communicate with the upstream chamber and the downstream chamber and are detachably formed, at least one flow rate measuring unit in which a pair of ultrasonic transducers are arranged, an inlet unit connected to the upstream chamber, and An outlet connected to the downstream chamber, a flow rate calculation unit that calculates a flow rate based on a signal from the ultrasonic transducer, and a switching unit that switches the connection between the ultrasonic transducer and the flow rate calculation unit. It is a thing.
【０００７】また、上流室と、下流室と、その両端が前
記上流室と前記下流室に対して連通するとともに着脱可
能に形成された少なくとも一つの流量測定部と、前記流
量測定部をはさんで配置された一対の超音波振動子と、
前記流量測定部と前記超音波振動子との間に配置され、
前記流量測定部の開口部に対応した部分のみが開口した
超音波吸収体と、前記上流室に接続された入口部と、前
記下流室に接続された出口部と、前記超音波振動子から
の信号を基に流量を算出する流量演算部より構成したも
のである。[0007] Further, the upstream chamber, the downstream chamber, at least one flow rate measuring portion formed at both ends thereof so as to be in communication with the upstream chamber and the downstream chamber and detachably attached, and the flow rate measuring portion. A pair of ultrasonic transducers arranged in
Disposed between the flow rate measuring unit and the ultrasonic transducer,
An ultrasonic absorber having only an opening corresponding to the opening of the flow rate measuring unit, an inlet connected to the upstream chamber, an outlet connected to the downstream chamber, and an ultrasonic transducer from the ultrasonic transducer. The flow rate calculation unit calculates the flow rate based on the signal.
【０００８】また、上流室と、下流室と、その両端が前
記上流室と前記下流室に対して連通するとともに着脱可
能に形成された少なくとも一つの流量測定部と、前記上
流室と下流室に配置された一対の超音波振動子と、前記
上流室に接続された、入口部と、前記下流室に接続され
た出口部と、前記超音波振動子からの信号を基に流量を
算出する流量演算部より構成したものである。Further, the upstream chamber, the downstream chamber, at least one flow rate measuring portion which is formed so that both ends thereof communicate with the upstream chamber and the downstream chamber and are detachable, and the upstream chamber and the downstream chamber are connected to each other. A pair of ultrasonic transducers arranged, an inlet connected to the upstream chamber, an outlet connected to the downstream chamber, and a flow rate for calculating a flow rate based on a signal from the ultrasonic transducer. It is composed of a calculation unit.
【０００９】また、上流室と、下流室と、その両端が前
記上流室と前記下流室に対して連通するとともに着脱可
能に形成され、一対の超音波振動子を配置した少なくと
も一つの流量測定部と、前記上流室に接続された入口部
と、前記下流室に接続された出口部と、前記上流室、下
流室の前記流量測定部と反対側において着脱可能に構成
した室壁から構成したものである。Further, an upstream chamber, a downstream chamber, and at least one flow rate measuring unit in which a pair of ultrasonic transducers are arranged, both ends of which are communicated with the upstream chamber and the downstream chamber and which are detachably formed. And an inlet portion connected to the upstream chamber, an outlet portion connected to the downstream chamber, and a chamber wall detachably configured on the opposite side of the upstream chamber and the downstream chamber from the flow rate measuring unit. Is.
【００１０】[0010]
【作用】本発明は上記した構成により、測定流路を着脱
可能な構成としているため、部分的な変更のみで、広範
囲の流量計測を行うことができるものである。According to the present invention, since the measurement flow path is detachable due to the above-mentioned structure, it is possible to measure the flow rate over a wide range with only a partial change.
【００１１】[0011]
【実施例】以下、本発明の第１の実施例を図１、２、
３、４、５を参照しながら説明する。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A first embodiment of the present invention will be described below with reference to FIGS.
Description will be made with reference to 3, 4, and 5.
【００１２】図１において、６は流量測定部であり、ブ
ロック化された流量測定部６ａ、６ｂ、６ｃより形成さ
れている。７は流量測定部６の上流に設けられた上流
室、８は流量測定部６の下流に設けられた下流室であ
る。９は流量測定部６の取付け板であるが、同時に上流
室７の室壁にもなっている。また、１０も流量測定部６
の取付け板であるが、同時に下流室８の室壁にもなって
いる。１１は上流室７に接続された入口部、１２は下流
室８に接続された出口部である。In FIG. 1, reference numeral 6 denotes a flow rate measuring section, which is formed of blocked flow rate measuring sections 6a, 6b and 6c. Reference numeral 7 is an upstream chamber provided upstream of the flow rate measuring unit 6, and 8 is a downstream chamber provided downstream of the flow rate measuring unit 6. Reference numeral 9 is a mounting plate of the flow rate measuring unit 6, and at the same time, is also a chamber wall of the upstream chamber 7. Also, 10 is the flow rate measuring unit 6
Although it is a mounting plate of the above, it also serves as a chamber wall of the downstream chamber 8. 11 is an inlet connected to the upstream chamber 7, and 12 is an outlet connected to the downstream chamber 8.
【００１３】図２はブロック化された流量測定部６ａの
部分破断斜視図である。１３は流路であり、その断面は
矩形状をしている。１４、１５は断面が矩形状の超音波
振動子である。１６、１７は流量測定部６ａを取付け板
９に取付けるためのネジ穴である。図示されていない
が、流量測定部６ａの反対側にも、取付け板１０に取付
けるためのネジ穴が開けられている。流量測定部６ｂ、
６ｃも６ａと同様の構造をしている。FIG. 2 is a partially cutaway perspective view of the blocked flow rate measuring portion 6a. Reference numeral 13 denotes a flow channel, the cross section of which has a rectangular shape. Reference numerals 14 and 15 are ultrasonic transducers having a rectangular cross section. Reference numerals 16 and 17 denote screw holes for mounting the flow rate measuring unit 6a on the mounting plate 9. Although not shown, a screw hole for attaching to the attaching plate 10 is also formed on the opposite side of the flow rate measuring unit 6a. Flow rate measuring unit 6b,
6c also has the same structure as 6a.
【００１４】図３は取付け板９の斜視図である。１８は
開口部であり、ブロック化された流量測定部６ａ、６
ｂ、６ｃに対応して、開口部１８ａ、１８ｂ、１８ｃが
開けられている。１９、２０は流量測定部６ａ、６ｂ、
６ｃを取付けるためのビス穴であり、それぞれ１９ａ、
１９ｂ、１９ｃ、および２０ａ、２０ｂ、２０ｃが対応
している。また、２１、２２、２３、２４は取付け板９
を上流室７に取付けるためのビス穴である。取付け板１
０についても同様の構成になっている。FIG. 3 is a perspective view of the mounting plate 9. Reference numeral 18 denotes an opening, which is a block-shaped flow rate measuring unit 6a, 6
Openings 18a, 18b and 18c are opened corresponding to b and 6c. 19 and 20 are flow rate measuring units 6a and 6b,
6a are screw holes for attaching 6c, 19a,
19b, 19c and 20a, 20b, 20c correspond. Further, reference numerals 21, 22, 23, and 24 denote mounting plates 9
Is a screw hole for attaching to the upstream chamber 7. Mounting plate 1
0 has the same configuration.
【００１５】図４は流量演算するためのブロックダイア
グラムである。２５は流量演算部であり、個別流速演算
部２６、個別流量演算部２７、全流量演算部２８より成
り立っている。２９は切換部であり、流量測定部６ａの
超音波振動子１４、１５と、流量測定部６ｂの超音波振
動子３０、３１、および流量測定部６ｃの超音波振動子
３２、３３を個別流速演算部２６に順次切換えて接続す
る機能を有するものである。FIG. 4 is a block diagram for calculating the flow rate. Reference numeral 25 denotes a flow rate calculation unit, which includes an individual flow velocity calculation unit 26, an individual flow rate calculation unit 27, and a total flow rate calculation unit 28. Reference numeral 29 denotes a switching unit that separates the ultrasonic transducers 14 and 15 of the flow rate measuring unit 6a, the ultrasonic transducers 30 and 31 of the flow rate measuring unit 6b, and the ultrasonic transducers 32 and 33 of the flow rate measuring unit 6c into individual flow rates. It has a function of sequentially switching and connecting to the arithmetic unit 26.
【００１６】次に作動を述べる。流体は入口部１１より
流入し、上流室７を経た後、流量測定部６に入り、その
後下流室８を経て、出口部１２より流出する。Next, the operation will be described. The fluid flows in through the inlet portion 11, passes through the upstream chamber 7, enters the flow rate measuring unit 6, and then passes through the downstream chamber 8 and flows out through the outlet portion 12.
【００１７】このとき流量測定部６は複数の流量測定部
６ａ、６ｂ、６ｃより構成されているため、流れは３つ
に分割される。今、流量測定部６ａ内の流れを考える。
図２において流れは流路１３を通過するが、このとき、
通常知られている方法により、超音波振動子１４、１５
間で、流路をよぎる様にして、超音波の送受が行われ
る。At this time, since the flow rate measuring unit 6 is composed of a plurality of flow rate measuring units 6a, 6b, 6c, the flow is divided into three. Now, consider the flow in the flow rate measuring unit 6a.
In FIG. 2, the flow passes through the flow path 13, but at this time,
The ultrasonic transducers 14 and 15 are formed by a commonly known method.
In between, ultrasonic waves are transmitted and received so as to cross the flow path.
【００１８】図４において、切換え部２９が超音波振動
子１４、１５を個別流速演算部２６に接続しているとす
ると、個別流速演算部２６にて、通常知られている方法
にて、上記超音波の伝搬時間より流速が計算される。こ
の流速をＶａ、流量測定部６ａの断面積をＳａとする
と、個別流量演算部２７では個別流量Ｑａを次式にて算
出する。In FIG. 4, assuming that the switching unit 29 connects the ultrasonic transducers 14 and 15 to the individual flow velocity calculation unit 26, the individual flow velocity calculation unit 26 uses the above-described method by a commonly known method. The flow velocity is calculated from the propagation time of ultrasonic waves. Assuming that this flow velocity is Va and the cross-sectional area of the flow rate measurement unit 6a is Sa, the individual flow rate calculation unit 27 calculates the individual flow rate Qa by the following equation.
【００１９】Ｑａ＝Ｋａ・Ｖａ・Ｓａ ただし、ここでＫａは測定流速Ｖａを平均流速に換算す
る補正係数である。Qa = Ka.Va.Sa where Ka is a correction coefficient for converting the measured flow velocity Va into the average flow velocity.
【００２０】切換え部２９は順次接続を、流量測定部６
ｂの超音波振動子３０、３１、流量測定部６ｃの超音波
振動子３２、３３と切換え、上記と同様の計算をそれぞ
れについて行い、個別流量Ｑｂ、Ｑｃを得る。全ての流
れについて個別流量が得られると、全流量演算部２８に
てこれらの加算が行われ、全流量（Ｑ）が次式にて得ら
れる。The switching unit 29 is connected sequentially, and the flow rate measuring unit 6 is connected.
The ultrasonic transducers 30 and 31 of b and the ultrasonic transducers 32 and 33 of the flow rate measuring unit 6c are switched, and the same calculation as above is performed for each to obtain individual flow rates Qb and Qc. When the individual flow rates are obtained for all the flows, these are added in the total flow rate calculation unit 28, and the total flow rate (Q) is obtained by the following equation.
【００２１】Ｑ＝Ｑａ＋Ｑｂ＋Ｑｃ 図５はデータ取込みの様子を時系列的に示したものであ
る。Q = Qa + Qb + Qc FIG. 5 shows the state of data acquisition in time series.
【００２２】この様な構成を取ることにより、より大き
な流量を計測する流量計を構成する場合には、流量測定
部６のブロック数を増加すればよい。また、より小さな
流量を計測する流量計を構成する場合にはブロック数を
減少すればよい。ブロック数の増減があった場合にはそ
の数に見合った開口部を有する取付け板９、１０を用い
ることになる。By adopting such a configuration, when configuring a flow meter for measuring a larger flow rate, the number of blocks of the flow rate measuring unit 6 may be increased. Further, when configuring a flow meter for measuring a smaller flow rate, the number of blocks may be reduced. When the number of blocks is increased or decreased, the mounting plates 9 and 10 having openings corresponding to the number are used.
【００２３】この様に、流量測定部６が着脱可能な形で
構成されているため、測定流量範囲の異なる流量計を構
成するに当たり、流量測定部の変更のみで対応ができ、
汎用性の高い流量計を提供することができる。As described above, since the flow rate measuring unit 6 is constructed so as to be detachable, it is possible to cope with the configuration of flow meters having different measurement flow rate ranges only by changing the flow rate measuring unit.
A highly versatile flow meter can be provided.
【００２４】次に第２の実施例について説明する。図６
において、３４は上流室、３５は下流室である。また、
上流室３４には入口部３６が、下流室３５には出口部３
７が接続されている。３８は上流室３４、下流室３５と
一体的に形成された固定流量測定部である。３９はブロ
ック化された流量測定部であり、第１の実施例における
流量測定部６と同一の構造を有している。４０、４１は
取付け板であり、機能的には第１の実施例における取付
け板９、１０と同様の働きを有するものである。Next, a second embodiment will be described. Figure 6
In the figure, 34 is an upstream chamber and 35 is a downstream chamber. Also,
The upstream chamber 34 has an inlet portion 36, and the downstream chamber 35 has an outlet portion 3.
7 is connected. Reference numeral 38 is a fixed flow rate measurement unit formed integrally with the upstream chamber 34 and the downstream chamber 35. Reference numeral 39 denotes a block-shaped flow rate measurement unit, which has the same structure as the flow rate measurement unit 6 in the first embodiment. Reference numerals 40 and 41 denote mounting plates, which functionally have the same functions as the mounting plates 9 and 10 in the first embodiment.
【００２５】図７は図６における固定流量測定部３８の
Ａ−Ａ’断面を示すものである。４２は固定の流量測定
部３８における流路であり、４３、４４は超音波振動子
である。FIG. 7 shows a cross section taken along the line AA 'of the fixed flow rate measuring unit 38 shown in FIG. 42 is a flow path in the fixed flow rate measuring unit 38, and 43 and 44 are ultrasonic transducers.
【００２６】次に作動を述べる。計測動作の基本的な方
法については第１の実施例と同じであり、ブロック化さ
れた流量測定部６の一部が固定の流量測定部３８に変わ
っただけである。この場合には総流量（Ｑ）は固定の流
量測定部の流量（Ｑｆ）とブロック化された流量測定部
３９の流量（Ｑｄ）の二つの流量の和として求められ
る。Next, the operation will be described. The basic method of the measuring operation is the same as that of the first embodiment, and only a part of the blocked flow rate measuring unit 6 is changed to the fixed flow rate measuring unit 38. In this case, the total flow rate (Q) is obtained as the sum of the two flow rates of the fixed flow rate measurement unit flow rate (Qf) and the blocked flow rate measurement unit 39 flow rate (Qd).
【００２７】この例における構成では、上流室３４、固
定の流量測定部３８、下流室３５が一体的に形成されて
いるため、流量計全体としての基本構造が強度的にしっ
かりしたものとなっている。この構成をベースとして、
ブロック化した流量測定部３９を着脱自在に構成するた
め、全体として変形や、ゆがみの少ない状態での計測が
実現するため、精度的にも安定することが期待される。In the configuration of this example, since the upstream chamber 34, the fixed flow rate measuring portion 38, and the downstream chamber 35 are integrally formed, the basic structure of the flow meter as a whole is strong in strength. There is. Based on this configuration,
Since the block-shaped flow rate measuring unit 39 is configured to be detachable, the measurement can be realized in a state in which there is little deformation or distortion as a whole, and therefore it is expected to be stable in accuracy.
【００２８】次に第３の実施例について説明する。図８
において、４５はブロック化された第一の流量測定部、
４６はブロック化された第二の流量測定部である。４
７、４８は側方支持部材である。Next, a third embodiment will be described. FIG.
In the reference numeral 45, the first flow rate measuring unit is a block,
46 is a block-shaped second flow rate measuring unit. Four
Reference numerals 7 and 48 are lateral support members.
【００２９】図９において、４９は第一の流量測定部４
５の流路、５０は第二の流量測定部４６の流路である。In FIG. 9, 49 is the first flow rate measuring unit 4
The flow channel 5 and the flow channel 50 of the second flow rate measuring unit 46.
【００３０】側方支持部材４７は開口部５１、５２を有
している。５３は超音波吸収材であり、開口部５４、５
５を有している。５６は超音波振動子である。また、側
方支持部材４８は開口部５７、５８を有している。５９
は超音波吸収材であり、開口部６０、６１を有してい
る。６２は超音波振動子である。The side support member 47 has openings 51 and 52. Reference numeral 53 is an ultrasonic absorber, and the openings 54, 5
Have five. Reference numeral 56 is an ultrasonic transducer. The side support member 48 also has openings 57 and 58. 59
Is an ultrasonic wave absorber and has openings 60 and 61. 62 is an ultrasonic transducer.
【００３１】次に作動を述べる。超音波振動子５５、６
２間の超音波の送受は通常行なわれている方法で実施さ
れるが、この場合には流路４９と５０に対して一対の超
音波振動子５６と６２のみで信号処理が行なわれるた
め、これにより得られる流速値は流路４９と流路５０に
おける流速の平均値的な値が得られることになる。この
値に流路４９と５０の断面積を乗じて、全体の流量が求
められる。Next, the operation will be described. Ultrasonic transducer 55, 6
Transmission and reception of ultrasonic waves between the two are performed by a method that is usually performed, but in this case, signal processing is performed only on the pair of ultrasonic transducers 56 and 62 for the channels 49 and 50. The flow velocity value thus obtained is an average value of the flow velocity in the flow channels 49 and 50. This value is multiplied by the cross-sectional area of the channels 49 and 50 to obtain the total flow rate.
【００３２】この例では、流量測定部４５、４６の開口
部５１、５２、５７、５８に対応する部分のみ開口部５
４、５５、６０、６１を有する超音波吸収材５３、５９
を用いることにより、あらかじめ大きいサイズの超音波
振動子５６、６２を一対用いるだけで幅広い流量レンジ
に対応することが出来る。In this example, only the portions corresponding to the openings 51, 52, 57 and 58 of the flow rate measuring portions 45 and 46 are provided with the openings 5.
Ultrasonic absorber 53, 59 having 4, 55, 60, 61
By using the above, it is possible to deal with a wide range of flow rates by only using a pair of ultrasonic transducers 56 and 62 of large size in advance.
【００３３】次に第４の実施例について説明する。図１
０において、６３は流量測定部であり、ブロック化され
た流量測定部６３ａ、６３ｂ、６３ｃより構成されてい
る。６４は上流室、６５は下流室である。６６は上流室
６４に配置された超音波振動子であり、６７は下流室６
５に配置された超音波振動子である。Next, a fourth embodiment will be described. FIG.
In No. 0, 63 is a flow rate measuring unit, which is composed of blocked flow rate measuring units 63a, 63b, and 63c. 64 is an upstream chamber and 65 is a downstream chamber. 66 is an ultrasonic transducer arranged in the upstream chamber 64, and 67 is the downstream chamber 6.
5 is an ultrasonic transducer.
【００３４】次に作動を述べる。この例は第３の実施例
と超音波振動子の６６、６７の配置が違うだけである。
したがって、計測動作は基本的に第３の実施例と同じで
ある。この場合にも一対の超音波振動子６６、６７のみ
で計測が可能である。また、この場合には超音波振動子
６６、６７が流量計測部６３から離れて置かれているた
め、その前方に吸収材を配置する必要はない。Next, the operation will be described. This example is different from the third example only in the arrangement of the ultrasonic transducers 66 and 67.
Therefore, the measurement operation is basically the same as that of the third embodiment. Also in this case, measurement can be performed only with the pair of ultrasonic transducers 66 and 67. Further, in this case, since the ultrasonic transducers 66 and 67 are placed away from the flow rate measuring unit 63, it is not necessary to arrange the absorber in front of them.
【００３５】次に第５の実施例について説明する。図１
１において、６８は流量測定部であり、ブロック化され
た流量測定部６８ａ、６８ｂ、６８ｃより構成されてい
る。６９は上流室、７０は下流室である。７１は上流室
６９の壁であり、７２は下流室７０に配置された壁であ
る。これらの壁７１、７２はいずれも上流室６９、下流
室７０に対して、着脱自在に配置されている。Next, a fifth embodiment will be described. FIG.
In No. 1, 68 is a flow rate measuring unit, which is composed of blocked flow rate measuring units 68a, 68b, 68c. 69 is an upstream chamber and 70 is a downstream chamber. Reference numeral 71 is a wall of the upstream chamber 69, and 72 is a wall arranged in the downstream chamber 70. Both of the walls 71 and 72 are detachably arranged with respect to the upstream chamber 69 and the downstream chamber 70.
【００３６】次に作動を述べる。この例における計測動
作は第１の実施例と同じである。この場合には壁７１、
７２が着脱可能に配置されているため、幅広い流量レン
ジに対応する上で上流室６９、下流室７０の変更が生じ
た場合にも対応できるようにしたものである。Next, the operation will be described. The measurement operation in this example is the same as that in the first embodiment. In this case the wall 71,
Since 72 is detachably arranged, it is possible to deal with a wide range of flow rates even when the upstream chamber 69 and the downstream chamber 70 are changed.
【００３７】[0037]
【発明の効果】以上のように本発明によれば次の効果が
得られる。As described above, according to the present invention, the following effects can be obtained.
【００３８】（１）測定流路を着脱可能な構成としたた
め、大幅な設計変更をする事なく、広範囲の流量計測に
対応する流量計の構成が可能となる。(1) Since the measurement flow path has a detachable structure, it is possible to construct a flow meter that can measure a wide range of flow rates without making major design changes.
【００３９】（２）あらかじめ設定された測定流路をベ
ースとして、これより大流量の計測については着脱可能
な測定流路を用いることにより、流量計全体の強度的構
成を強固なものにすることができる。(2) Using a preset measurement flow path as a base, and for measuring a larger flow rate than this, a removable measurement flow path is used to strengthen the strength structure of the entire flow meter. You can
【００４０】（３）一対の超音波振動子を用い、測定流
路のない部分を超音波吸収体で形成することにより、複
数の超音波振動子を用いる事なく広範囲の流量計測に対
応することができる。(3) A wide range of flow rate can be measured without using a plurality of ultrasonic transducers by using a pair of ultrasonic transducers and forming a portion without a measurement flow path with an ultrasonic absorber. You can
【００４１】（４）一対の超音波振動子を上流、下流室
内に配置することにより、複数の超音波振動子を用いる
事なく広範囲の流量計測に対応することができる。(4) By arranging a pair of ultrasonic transducers in the upstream and downstream chambers, it is possible to cope with a wide range of flow rate measurement without using a plurality of ultrasonic transducers.
【００４２】（５）上流、下流室の室壁を着脱可能とす
ることにより、上流室、下流室の変更に対しても対応す
ることができる。(5) By making the chamber walls of the upstream chamber and the downstream chamber detachable, it is possible to deal with changes in the upstream chamber and the downstream chamber.
【図１】本発明の第１の実施例の超音波流量計の正面図FIG. 1 is a front view of an ultrasonic flowmeter according to a first embodiment of the present invention.
【図２】同流量計における流量測定部の一部破断斜視図FIG. 2 is a partially cutaway perspective view of a flow rate measuring unit in the flow meter.
【図３】同流量計における取付け板の斜視図FIG. 3 is a perspective view of a mounting plate in the flow meter.
【図４】同流量計における流量演算のブロック図FIG. 4 is a block diagram of flow rate calculation in the same flow meter.
【図５】同流量計において時系列的にデータを取込む様
子を示した特性図FIG. 5 is a characteristic diagram showing how the same flow meter captures data in time series.
【図６】本発明の第２の実施例の超音波流量計における
一部破断正面図FIG. 6 is a partially cutaway front view of an ultrasonic flowmeter according to a second embodiment of the present invention.
【図７】同流量計における図６のＡ−Ａ’線断面図FIG. 7 is a sectional view of the same flow meter taken along the line A-A ′ in FIG. 6.
【図８】本発明の第３の実施例の超音波流量計における
流量測定部の斜視図FIG. 8 is a perspective view of a flow rate measuring section in an ultrasonic flow meter according to a third embodiment of the present invention.
【図９】同流量計における図８のＢ−Ｂ’線断面図FIG. 9 is a sectional view taken along line B-B ′ of FIG. 8 in the same flow meter.
【図１０】本発明の第４の実施例の超音波流量計におけ
る一部破断正面図FIG. 10 is a partially cutaway front view of an ultrasonic flowmeter according to a fourth embodiment of the present invention.
【図１１】本発明の第５の実施例の超音波流量計におけ
る正面図FIG. 11 is a front view of an ultrasonic flowmeter according to a fifth embodiment of the present invention.
【図１２】従来の超音波流量計を上方から見た断面図FIG. 12 is a cross-sectional view of a conventional ultrasonic flowmeter viewed from above.
【符号の説明】 ６ 流量測定部 ７ 上流室 ８ 下流室 １１ 入口部 １２ 出口部[Explanation of Codes] 6 Flow Rate Measuring Section 7 Upstream Chamber 8 Downstream Chamber 11 Inlet 12 Outlet
Claims (5)
室と前記下流室に対して連通するとともに着脱可能に形
成され、一対の超音波振動子を配置した少なくとも一つ
の流量測定部と、前記上流室に接続された入口部と、前
記下流室に接続された出口部と、前記超音波振動子から
の信号を基に流量を算出する流量演算部と、前記超音波
振動子と前記流量演算部との接続を切換える切換部より
構成された超音波式流量計。1. An upstream chamber, a downstream chamber, and at least one flow rate measuring unit in which a pair of ultrasonic transducers are arranged, both ends of which communicate with the upstream chamber and the downstream chamber and which are detachably formed. An inlet portion connected to the upstream chamber, an outlet portion connected to the downstream chamber, a flow rate calculation unit that calculates a flow rate based on a signal from the ultrasonic transducer, and the ultrasonic transducer. An ultrasonic flowmeter comprising a switching unit that switches connection with the flow rate calculation unit.
室と前記下流室に対して連通するごとく一体的に形成さ
れ、一対の超音波振動子を配置した固定流量測定部と、
その両端が前記上流室と前記下流室に対して連通すると
ともに着脱可能に形成され、一対の超音波振動子を配置
した少なくとも一つの着脱式流量測定部と、前記上流室
に接続された入口部と、前記下流室に接続された出口部
と、前記超音波振動子からの信号を基に流量を算出する
流量演算部と、前記超音波振動子と前記流量演算部との
接続を切換える切換部より構成された超音波式流量計。2. An upstream chamber, a downstream chamber, and a fixed flow rate measuring unit in which both ends are integrally formed so as to communicate with the upstream chamber and the downstream chamber, and a pair of ultrasonic transducers are arranged.
At least one detachable flow rate measuring unit having both ends communicating with the upstream chamber and the downstream chamber and being detachable and having a pair of ultrasonic transducers, and an inlet unit connected to the upstream chamber An outlet connected to the downstream chamber, a flow rate calculation unit that calculates a flow rate based on a signal from the ultrasonic transducer, and a switching unit that switches the connection between the ultrasonic transducer and the flow rate calculation unit. Ultrasonic flow meter composed of.
室と前記下流室に対して連通するとともに着脱可能に形
成された少なくとも一つの流量測定部と、前記流量測定
部をはさんで配置された一対の超音波振動子と、前記流
量測定部と前記超音波振動子との間に配置され、前記流
量測定部の開口部に対応した部分のみが開口した超音波
吸収体と、前記上流室に接続された入口部と、前記下流
室に接続された出口部と、前記超音波振動子からの信号
を基に流量を算出する流量演算部より構成された超音波
式流量計。3. An upstream chamber, a downstream chamber, at least one flow rate measuring portion which has both ends communicating with the upstream chamber and the downstream chamber and is detachably formed, and the flow rate measuring portion. A pair of ultrasonic transducers arranged in, the ultrasonic absorber disposed between the flow rate measurement unit and the ultrasonic transducer, only the portion corresponding to the opening of the flow rate measurement unit is opened, An ultrasonic flowmeter comprising an inlet connected to the upstream chamber, an outlet connected to the downstream chamber, and a flow rate calculator that calculates a flow rate based on a signal from the ultrasonic transducer.
室と前記下流室に対して連通するとともに着脱可能に形
成された少なくとも一つの流量測定部と、前記上流室と
下流室に配置された一対の超音波振動子と、前記上流室
に接続された、入口部と、前記下流室に接続された出口
部と、前記超音波振動子からの信号を基に流量を算出す
る流量演算部より構成された超音波式流量計。4. An upstream chamber, a downstream chamber, at least one flow rate measuring portion which is formed so that both ends thereof communicate with the upstream chamber and the downstream chamber and is detachable, and the upstream chamber and the downstream chamber. A pair of ultrasonic transducers arranged, an inlet connected to the upstream chamber, an outlet connected to the downstream chamber, and a flow rate for calculating a flow rate based on a signal from the ultrasonic transducer. An ultrasonic flow meter composed of a calculation unit.
室と前記下流室に対して連通するとともに着脱可能に形
成され、一対の超音波振動子を配置した少なくとも一つ
の流量測定部と、前記上流室に接続された入口部と、前
記下流室に接続された出口部と、前記上流室、下流室の
前記流量測定部と反対側において着脱可能に構成した室
壁からなる超音波式流量計。5. An upstream chamber, a downstream chamber, and at least one flow rate measuring unit in which a pair of ultrasonic transducers are arranged, the both ends of which communicate with the upstream chamber and the downstream chamber and which are detachably formed. And an ultrasonic wave composed of an inlet portion connected to the upstream chamber, an outlet portion connected to the downstream chamber, and a chamber wall detachably configured on the opposite side of the upstream chamber and the downstream chamber from the flow rate measuring unit. Flow meter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15897795A JP3692560B2 (en) | 1995-06-26 | 1995-06-26 | Ultrasonic flow meter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15897795A JP3692560B2 (en) | 1995-06-26 | 1995-06-26 | Ultrasonic flow meter |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH095133A true JPH095133A (en) | 1997-01-10 |
| JP3692560B2 JP3692560B2 (en) | 2005-09-07 |
Family
ID=15683520
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP15897795A Expired - Fee Related JP3692560B2 (en) | 1995-06-26 | 1995-06-26 | Ultrasonic flow meter |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3692560B2 (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001201380A (en) * | 2000-01-18 | 2001-07-27 | Osaka Gas Co Ltd | Ultrasonic flow meter |
| CN100338440C (en) * | 2003-11-10 | 2007-09-19 | 松下电器产业株式会社 | Supersonic flowmeter and its producing method |
| WO2014057673A1 (en) | 2012-10-10 | 2014-04-17 | パナソニック株式会社 | Flowmeter |
| CN105960576A (en) * | 2014-02-07 | 2016-09-21 | 松下知识产权经营株式会社 | Barometer |
| CN105980815A (en) * | 2014-02-07 | 2016-09-28 | 松下知识产权经营株式会社 | Gas flowmeter |
| CN106030254A (en) * | 2014-02-07 | 2016-10-12 | 松下知识产权经营株式会社 | Gas flowmeter |
| JP2017156100A (en) * | 2016-02-29 | 2017-09-07 | パナソニックＩｐマネジメント株式会社 | Gas meter |
| CN111765932A (en) * | 2020-05-19 | 2020-10-13 | 临沂市东方仪表有限公司 | Ultrasonic water meter jam-proof device |
-
1995
- 1995-06-26 JP JP15897795A patent/JP3692560B2/en not_active Expired - Fee Related
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001201380A (en) * | 2000-01-18 | 2001-07-27 | Osaka Gas Co Ltd | Ultrasonic flow meter |
| CN100338440C (en) * | 2003-11-10 | 2007-09-19 | 松下电器产业株式会社 | Supersonic flowmeter and its producing method |
| US9453748B2 (en) | 2012-10-10 | 2016-09-27 | Panasonic Intellectual Property Management Co., Ltd. | Flow meter device |
| WO2014057673A1 (en) | 2012-10-10 | 2014-04-17 | パナソニック株式会社 | Flowmeter |
| CN106030254A (en) * | 2014-02-07 | 2016-10-12 | 松下知识产权经营株式会社 | Gas flowmeter |
| CN105980815A (en) * | 2014-02-07 | 2016-09-28 | 松下知识产权经营株式会社 | Gas flowmeter |
| CN105960576A (en) * | 2014-02-07 | 2016-09-21 | 松下知识产权经营株式会社 | Barometer |
| US20160341584A1 (en) * | 2014-02-07 | 2016-11-24 | Panasonic Intellectual Property Management Co., Ltd. | Gas flowmeter |
| US10317263B2 (en) * | 2014-02-07 | 2019-06-11 | Panasonic Intellectual Property Management Co., Ltd. | Flowmeter having a flow measuring unit and a flow passage member in a single housing |
| US10514286B2 (en) | 2014-02-07 | 2019-12-24 | Panasonic Intellectual Property Management Co., Ltd. | Gas flowmeter |
| JP2017156100A (en) * | 2016-02-29 | 2017-09-07 | パナソニックＩｐマネジメント株式会社 | Gas meter |
| WO2017149576A1 (en) * | 2016-02-29 | 2017-09-08 | パナソニックＩｐマネジメント株式会社 | Gas meter |
| CN111765932A (en) * | 2020-05-19 | 2020-10-13 | 临沂市东方仪表有限公司 | Ultrasonic water meter jam-proof device |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3692560B2 (en) | 2005-09-07 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| KR100694937B1 (en) | Ultrasonic Fluid Meter | |
| JP2004264064A (en) | Ultrasonic flow meter | |
| CA2557432A1 (en) | Ultrasonic flowmeter and ultrasonic flow rate measurement method | |
| EP3318847A1 (en) | Measurement unit and flow rate meter | |
| EP0907069A3 (en) | System for measuring the speed of fluid | |
| JPS6125291B2 (en) | ||
| JPH095133A (en) | Ultrasonic flow meter | |
| CN100374827C (en) | flow measuring device | |
| JP2014077679A (en) | Flow meter | |
| JPH0943015A (en) | Ultrasonic flow meter | |
| GB2341688A (en) | Adaptable gas meter | |
| WO1995004258A1 (en) | Improvements relating to fluid flow monitoring | |
| JP7285453B2 (en) | ultrasonic flow meter | |
| JP3689975B2 (en) | Ultrasonic flow meter | |
| JP3144986B2 (en) | Flowmeter | |
| JP2000241218A5 (en) | ||
| JP3497279B2 (en) | Ultrasonic flow meter | |
| JP3521622B2 (en) | Ultrasonic flow meter and ultrasonic flow meter | |
| RU27218U1 (en) | PRIMARY TRANSMITTER OF ULTRASONIC FLOW METER | |
| JPH08313316A (en) | Ultrasonic flow meter | |
| JP2001208585A (en) | Flowmeter | |
| JPS605885B2 (en) | flow measuring device | |
| JP3383575B2 (en) | Pulsation absorption structure of flow meter | |
| JP4396246B2 (en) | Flow measuring device | |
| JP4675503B2 (en) | Ultrasonic vortex flowmeter |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A977 | Report on retrieval |
Free format text: JAPANESE INTERMEDIATE CODE: A971007 Effective date: 20040217 |
|
| A131 | Notification of reasons for refusal |
Free format text: JAPANESE INTERMEDIATE CODE: A131 Effective date: 20040518 |
|
| A521 | Request for written amendment filed |
Free format text: JAPANESE INTERMEDIATE CODE: A523 Effective date: 20040720 |
|
| A131 | Notification of reasons for refusal |
Free format text: JAPANESE INTERMEDIATE CODE: A131 Effective date: 20050308 |
|
| A521 | Request for written amendment filed |
Free format text: JAPANESE INTERMEDIATE CODE: A523 Effective date: 20050420 |
|
| TRDD | Decision of grant or rejection written | ||
| A01 | Written decision to grant a patent or to grant a registration (utility model) |
Free format text: JAPANESE INTERMEDIATE CODE: A01 Effective date: 20050531 |
|
| A61 | First payment of annual fees (during grant procedure) |
Free format text: JAPANESE INTERMEDIATE CODE: A61 Effective date: 20050613 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20090701 Year of fee payment: 4 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20100701 Year of fee payment: 5 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20110701 Year of fee payment: 6 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20110701 Year of fee payment: 6 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20120701 Year of fee payment: 7 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20130701 Year of fee payment: 8 |
|
| LAPS | Cancellation because of no payment of annual fees |