JPS5827020A - Wide range type flow rate measuring device - Google Patents
Wide range type flow rate measuring deviceInfo
- Publication number
- JPS5827020A JPS5827020A JP12574681A JP12574681A JPS5827020A JP S5827020 A JPS5827020 A JP S5827020A JP 12574681 A JP12574681 A JP 12574681A JP 12574681 A JP12574681 A JP 12574681A JP S5827020 A JPS5827020 A JP S5827020A
- Authority
- JP
- Japan
- Prior art keywords
- flow rate
- flowmeter
- measuring device
- flow
- wide range
- 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.)
- Pending
Links
- 239000012530 fluid Substances 0.000 claims abstract description 9
- 238000005259 measurement Methods 0.000 claims description 8
- 239000007788 liquid Substances 0.000 abstract 2
- 230000001105 regulatory effect Effects 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 2
- 238000011144 upstream manufacturing Methods 0.000 description 2
- 230000006866 deterioration Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F7/00—Volume-flow measuring devices with two or more measuring ranges; Compound meters
Landscapes
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- General Physics & Mathematics (AREA)
- Measuring Volume Flow (AREA)
Abstract
Description
【発明の詳細な説明】
本発明は配管内を流れる流体の流量を測定する装置であ
って、特に小容量から大容量まで変化する流体の測定に
適するものである。DETAILED DESCRIPTION OF THE INVENTION The present invention is an apparatus for measuring the flow rate of a fluid flowing in a pipe, and is particularly suitable for measuring a fluid whose volume varies from a small volume to a large volume.
通常流量計としては、オリフィスを使用したもの、ター
ビン式、電磁式、超音波式、せき。Typical flowmeters include those using an orifice, turbine type, electromagnetic type, ultrasonic type, and weir type.
など様々なものがあるが、いずれの流量計も精度良く測
定可能な範囲（レンジ）は１０２程度である。There are various types of flow meters, but the measurable range (range) of all flow meters with high accuracy is about 102.
一般には流量の変化は１００倍程度であって。Generally, the change in flow rate is about 100 times.
その平均流量に応じて・適当な流量計を選択すれば事足
りている。It is sufficient to select an appropriate flowmeter according to the average flow rate.
しかし流量の変化が１０．０００倍にも達するような場
合には、その上方あるいは下方の流量測定精度の悪化に
対し何ら対策をたてることなしに１台の流量計で測定し
、必要な制御を行なっている。However, in cases where the change in flow rate reaches 10,000 times, it is necessary to measure with a single flowmeter without taking any measures to prevent the deterioration of flow rate measurement accuracy above or below the change, and perform the necessary control. is being carried out.
従って測定精度も悪く、かつそれを元にして行なう制御
等も極めて不正確なものであった。Therefore, the measurement accuracy was poor, and the control performed based on it was also extremely inaccurate.
本発明はこの欠点を排除するものであって。The present invention eliminates this drawback.
夫々測定範囲を異にする複数の流量計を流体の流れ内に
直列に配設し、夫々の流量計のみをバイパスするバイパ
ス管路を設け、同バイパス管路に流量調整弁を介装した
ことを特徴とし、その目的とするところは流体の流量が
小量から大量まで変化しても正確にその流量を測定する
ことのできる広範囲型流量測定装置を提供するものであ
る。Multiple flowmeters with different measurement ranges are arranged in series within the fluid flow, a bypass pipe is provided to bypass only each flowmeter, and a flow rate adjustment valve is interposed in the bypass pipe. The purpose of the present invention is to provide a wide range flow rate measuring device that can accurately measure the flow rate of fluid even if the flow rate changes from a small amount to a large amount.
以下本発明を第１図および第２図に示す−実施例につい
て説明する・。The present invention will be described below with reference to embodiments shown in FIGS. 1 and 2.
１は配管であって５０００ ｎ？／制ｎまでの流体を流
すものであって、その上流側より第１の流量計２と第２
の流量計３が直列に配設されている。1 is piping and is 5000n? The first flowmeter 2 and the second flowmeter are connected from the upstream side.
Flow meters 3 are arranged in series.
第１の流量計２の測定範囲は１００ ｒｒ？、／Ｂ：ｎ
までであり、第２の流量計３の測定範囲は５０ないし５
０００ ｎ／／ｒｎｉｎである。Is the measurement range of the first flow meter 2 100 rr? ,/B:n
The measurement range of the second flowmeter 3 is from 50 to 5
000 n//rnin.
４は第１の流量計２のみをバイパスするバイパス管路で
あって、流量調整弁５がその途中に介挿されており、同
流量調整弁５は第１の流量計２の出力信号に応じて開閉
する。たとえば第１の流量計２の出力信号が８０ηｍｉ
ｎ以下の時は閉じ、 ｓ ｏ ＩＴ７／ｍｉｎ以上で
開となる。Reference numeral 4 denotes a bypass line that bypasses only the first flow meter 2, and a flow rate adjustment valve 5 is inserted in the middle of the line. to open and close. For example, the output signal of the first flowmeter 2 is 80ηmi.
It is closed when it is less than n, and it is open when it is more than s o IT7/min.
本実施例の装置での測定手順を第２図を参照しながら説
明する。Ａ、およびＢの範囲は第１・第２の流量計の測
定可能範囲で、配管１内を実線Ｃで示す流体の流量が流
れたとする。流量が８０ ｎｉ”／ｍｉｎを横切る時間
はｔ２．電、であり。The measurement procedure using the apparatus of this embodiment will be explained with reference to FIG. It is assumed that the ranges A and B are measurable ranges of the first and second flowmeters, and the flow rate of the fluid shown by the solid line C flows in the pipe 1. The time for the flow rate to cross 80 ni''/min is t2.electron.
０ 〈ｔ ＜ ｔ＋ の時流量調整弁５は閉１＋＜
１≦ｔ、の時流量調整弁５は開となり、再び
１、（１の時流量調整弁５は閉
となる。0 <When t < t+, the flow rate adjustment valve 5 closes 1+<
When 1≦t, the flow rate adjustment valve 5 is open, and when 1 (1), the flow rate adjustment valve 5 is closed.
すなわち、流量が８０ ｎ１／ｍｉ ｎ以下の場合は第
１の流量計２内を全ての流体が流れ流量が測定される。That is, when the flow rate is 80 n1/min or less, all the fluid flows through the first flowmeter 2 and the flow rate is measured.
一方流量が８０φ’ｍｉｎを越える場合は。On the other hand, if the flow rate exceeds 80φ'min.
バイパス管路４に一部流れ込むが、第１の流量計２の後
流側で配管ｌ内の流れと合流し第２の流量計３でその流
量が測定されろ。A part of it flows into the bypass pipe 4, but it merges with the flow in the pipe 1 on the downstream side of the first flow meter 2, and the flow rate is measured by the second flow meter 3.
このように本発明の一実施例の流量測定装置によると、
、５０００ ｎ？／ｍｉｎまでの流量が、その全範囲
で精度よく測定することができる。As described above, according to the flow rate measuring device of one embodiment of the present invention,
, 5000 n? Flow rates up to /min can be measured accurately over the entire range.
なお上記実施例では２つの流量計を上流側が小容量、下
流側を大容量としたが、その逆であってももちろん良い
。In the above embodiment, the upstream side of the two flowmeters has a small capacity and the downstream side has a large capacity, but the reverse may of course be used.
更には３個あるいはそれ以上の測定範囲の異なる流量計
を直列に配設することも可能であって、その場合には測
定範囲の大小を無視して直列に配設し、夫々バイパス管
路を配設すれば良いが、最大容量の流量計に対しては上
記実施例のようにバイパス管路を省略しても良い。Furthermore, it is also possible to arrange three or more flowmeters with different measurement ranges in series. However, for a maximum capacity flowmeter, the bypass pipe line may be omitted as in the above embodiment.
第１図は本発明の一実施例を示す流量測定装置の図、第
２図は流量と装置の作動の説明図である。FIG. 1 is a diagram of a flow rate measuring device showing one embodiment of the present invention, and FIG. 2 is an explanatory diagram of flow rate and operation of the device.
Claims (1)
直列に配設し、夫々の流量計のみをバイパスするバイパ
ス管路を設け、同バイパス管路に流量調整弁を介装した
ことを特徴とする広範囲型流量測定装置。Multiple flowmeters with different measurement ranges are arranged in series within the fluid flow, a bypass pipe is provided to bypass only each flowmeter, and a flow rate adjustment valve is interposed in the bypass pipe. A wide range flow rate measuring device featuring:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12574681A JPS5827020A (en) | 1981-08-11 | 1981-08-11 | Wide range type flow rate measuring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12574681A JPS5827020A (en) | 1981-08-11 | 1981-08-11 | Wide range type flow rate measuring device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5827020A true JPS5827020A (en) | 1983-02-17 |
Family
ID=14917772
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP12574681A Pending JPS5827020A (en) | 1981-08-11 | 1981-08-11 | Wide range type flow rate measuring device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5827020A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2068221A1 (en) * | 2007-12-04 | 2009-06-10 | Succes A/S | Flow-sensing device |
| WO2020035273A1 (en) * | 2018-08-15 | 2020-02-20 | Vaillant Gmbh | Measuring device for measuring the volumetric flow rate of water in a heating circuit |
| WO2020118341A1 (en) * | 2018-12-12 | 2020-06-18 | Avl List Gmbh | Measuring system and method for measuring a mass flow rate, a density, a temperature or a flow speed |
| US10863667B2 (en) | 2015-09-28 | 2020-12-15 | Precision Planting Llc | Systems and devices for controlling and monitoring liquid applications of agricultural fields |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4842768A (en) * | 1971-09-28 | 1973-06-21 |
-
1981
- 1981-08-11 JP JP12574681A patent/JPS5827020A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4842768A (en) * | 1971-09-28 | 1973-06-21 |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2068221A1 (en) * | 2007-12-04 | 2009-06-10 | Succes A/S | Flow-sensing device |
| US10863667B2 (en) | 2015-09-28 | 2020-12-15 | Precision Planting Llc | Systems and devices for controlling and monitoring liquid applications of agricultural fields |
| WO2020035273A1 (en) * | 2018-08-15 | 2020-02-20 | Vaillant Gmbh | Measuring device for measuring the volumetric flow rate of water in a heating circuit |
| WO2020118341A1 (en) * | 2018-12-12 | 2020-06-18 | Avl List Gmbh | Measuring system and method for measuring a mass flow rate, a density, a temperature or a flow speed |
| US11959788B2 (en) | 2018-12-12 | 2024-04-16 | Avl List Gmbh | Wide range flow measuring device having two Coriolis meters arranged in series and a bypass line to bypass the second Coriolis meter |
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