JPH0355770B2 - - Google Patents
Info
- Publication number
- JPH0355770B2 JPH0355770B2 JP55070390A JP7039080A JPH0355770B2 JP H0355770 B2 JPH0355770 B2 JP H0355770B2 JP 55070390 A JP55070390 A JP 55070390A JP 7039080 A JP7039080 A JP 7039080A JP H0355770 B2 JPH0355770 B2 JP H0355770B2
- Authority
- JP
- Japan
- Prior art keywords
- valve
- calibration
- flow meter
- bypass
- flowmeter
- 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.)
- Expired
Links
- 239000012530 fluid Substances 0.000 claims description 19
- 238000011144 upstream manufacturing Methods 0.000 claims description 4
- 238000005259 measurement Methods 0.000 description 13
- 230000005856 abnormality Effects 0.000 description 8
- 238000000034 method Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 2
- 230000001934 delay Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000011824 nuclear material Substances 0.000 description 1
- 238000011112 process operation Methods 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F25/00—Testing or calibration of apparatus for measuring volume, volume flow or liquid level or for metering by volume
- G01F25/10—Testing or calibration of apparatus for measuring volume, volume flow or liquid level or for metering by volume of flowmeters
Landscapes
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- General Physics & Mathematics (AREA)
- Measuring Volume Flow (AREA)
Description
【発明の詳細な説明】
本発明は気体、液体（以下流体という。）の流
量測定に用いられる流量計をプラントを停止せず
に校正しうる流量測定装置に関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a flow rate measuring device that can calibrate a flow meter used for measuring the flow rate of gas or liquid (hereinafter referred to as fluid) without stopping the plant.
一般に流体を扱うプラントにおいては、プロセ
スを停止させることなく流量計の校正あるいは試
験を行うため種々の構成が用いられる。第１図に
その一例を示す。 Generally, in fluid handling plants, various configurations are used to calibrate or test flow meters without stopping the process. An example is shown in FIG.
すなわち、第１図において、３はプロセス流体
F1（以下被測定流体という。）が流れる配管ライ
ンを示している。この配管ライン３には入口弁Ｍ
および出口弁Ｎに有する第１流量計１と入口弁Ｏ
および出口弁Ｐを有する第２流量計２が並列接続
されて挿入されている。流量計１，２を校正する
ための校正配管ライン４はゲート弁Ｒを介して入
口弁Ｍと第１流量計１の接続点に接続され、かつ
ゲート弁Ｑを介して入口弁Ｏと第２流量計２の接
続点に接続されている。校正配管ライン５はゲー
ト弁Ｓを介して第１流量計１と出口弁Ｎの接続点
に接続されており、かつゲート弁Ｔを介して第２
流量計２と出口弁Ｐの接続点に接続されている。 That is, in FIG. 1, 3 is the process fluid.
It shows the piping line through which F 1 (hereinafter referred to as the fluid to be measured) flows. This piping line 3 has an inlet valve M.
and a first flow meter 1 at the outlet valve N and an inlet valve O
and a second flow meter 2 having an outlet valve P are inserted in parallel connection. A calibration piping line 4 for calibrating the flowmeters 1 and 2 is connected to the connection point between the inlet valve M and the first flowmeter 1 via a gate valve R, and is connected to the connection point between the inlet valve O and the second flowmeter via a gate valve Q. It is connected to the connection point of the flowmeter 2. The calibration piping line 5 is connected to the connection point between the first flowmeter 1 and the outlet valve N via the gate valve S, and is connected to the connection point between the first flowmeter 1 and the outlet valve N via the gate valve T.
It is connected to the connection point between the flow meter 2 and the outlet valve P.
以上の構成において、被測定流体F1の流量測
定に際しては第１流量計１または第２流量計２の
いずれか一方のみが使用される。他の一方は補償
用として設けられている。したがつて他の一方は
常時使用されず、一方の故障あるいは校正または
動作試験のときに使用に供せられる。 In the above configuration, only one of the first flowmeter 1 and the second flowmeter 2 is used when measuring the flow rate of the fluid to be measured F1 . The other one is provided for compensation. Therefore, the other one is not used all the time, but is used when one breaks down or is calibrated or tested.
いま、第１流量計１がプロセス稼動時において
測定動作をしているものとし、第２流量計２の校
正が行なわれるものとする。この状態では入口弁
Ｏ、出口弁Ｐ、ゲート弁Ｒ、ゲート弁Ｓが閉鎖さ
れる。したがつて、被測定流体F1は〔配管ライ
ン３〕→〔入口弁Ｍ〕→〔第１流量計１〕→〔出
口弁Ｎ〕→〔配管ライン３〕の経路で流れ、第１
流量計１にて流量測定が行われる。また、校正用
流体F2は〔校正配管ライン４〕→〔ゲート弁Ｑ〕
→〔第２流量計２〕→〔ゲート弁Ｔ〕→〔校正配
管ライン５〕の経路で流れ、第２流量計２の校正
が行われる。上述の逆の場合の経路を破線で示し
説明は省略する。 It is now assumed that the first flowmeter 1 is performing a measurement operation during process operation, and that the second flowmeter 2 is being calibrated. In this state, the inlet valve O, outlet valve P, gate valve R, and gate valve S are closed. Therefore, the fluid to be measured F 1 flows in the path of [piping line 3] → [inlet valve M] → [first flow meter 1] → [outlet valve N] → [piping line 3], and
A flow meter 1 measures the flow rate. Also, the calibration fluid F 2 is connected to [calibration piping line 4] → [gate valve Q]
→ [Second flow meter 2] → [Gate valve T] → [Calibration piping line 5], and the second flow meter 2 is calibrated. The route in the opposite case as described above is shown by a broken line, and its explanation will be omitted.
かかる従来装置においては、先に述べたように
同一測定点に対し２台と流量計１，２が設置され
ているが、常時使用しているのは１台のみであ
る。また、流量計１，２の校正、動作試験はそう
頻繁に行うものではなく、増して故障の発生など
は稀である。それゆえ、一方の流量計は待機時間
のみを費しているのがほとんどである。 In such a conventional device, two flowmeters 1 and 2 are installed at the same measurement point as described above, but only one is used at all times. Further, calibration and operation tests of the flowmeters 1 and 2 are not performed very often, and furthermore, occurrence of failure is rare. Therefore, most of the flowmeters spend only standby time.
この観点からすれば、従来の装置においては、
２つの流量計は十分に活用されているとはいい難
い。 From this point of view, in conventional equipment,
It cannot be said that the two flowmeters are fully utilized.
また、一般に、ガス流量測定、特に微量ガス流
量測定においては、それに使用する流量計はそれ
自体が高感度なものとして構成されており、その
ため故障しやすく、さらに使用にあつてはドリフ
ト等の問題がある。従つて、上記した従来の装置
におけるように、流量測定に２台の流量計を交互
に使用して測定値を１台の流量計のみから得るよ
うにした場合には、それによつて得られる測定値
に十分な信頼性を期待することができない場合も
少なくない。 Additionally, in general, the flowmeter used for gas flow measurement, especially trace gas flow measurement, is constructed with a high sensitivity, which makes it prone to failure, and furthermore, problems such as drift occur during use. There is. Therefore, if two flowmeters are used alternately to measure the flow rate and the measured value is obtained from only one flowmeter, as in the conventional device described above, the resulting measurement In many cases, values cannot be expected to have sufficient reliability.
このため、上記従来装置においては、流量計そ
のものに異常が生じても、流量計本体が異常なの
か、ガス量の変化によるものなのか、流量計の校
正時点まで判明できない。このような場合には、
重要なプラントにあつては、異常処理の遅れその
ものの原因で大事的に結びつく恐れがある。 For this reason, in the above-mentioned conventional device, even if an abnormality occurs in the flowmeter itself, it cannot be determined whether the abnormality is in the flowmeter itself or due to a change in the amount of gas until the flowmeter is calibrated. In such a case,
In important plants, delays in handling abnormalities may be the cause of the problem.
本発明は、以上のような点に鑑み、２つの流量
計を使用しつつも、それらの２つの流量計を有効
に利用することにより、即ち、平時には２つの流
量計を同時に測定可能とするが、一方の流量計の
故障時や校正時等においては、プロセスを停止さ
せることなく他方の流量計のみによつて測定可能
とし、それにより流量計の故障や校正に対応可能
としつつも測定精度や信頼性の向上を図り得る流
量測定装置を提供することを目的とする。 In view of the above points, the present invention uses two flowmeters and makes effective use of those two flowmeters, that is, it is possible to simultaneously measure the two flowmeters during normal times. However, in the event of a failure or calibration of one flowmeter, measurements can be made using only the other flowmeter without stopping the process, making it possible to respond to failures or calibrations of flowmeters while still improving measurement accuracy. The purpose of the present invention is to provide a flow rate measuring device that can improve reliability and reliability.
以下本発明を図示する実施例に基づいて詳述す
る。第２図に本発明による流量測定装置の実施例
を示す。図中１３は被測定流体F1が流れる配管
ラインを示している。この配管ライン１３には入
口弁Ａ、第１流量計１１、出口弁Ｂ、および入口
弁Ｃ、第２流量計１２、出口弁Ｄが直列に接続さ
れている。 The present invention will be described in detail below based on illustrated embodiments. FIG. 2 shows an embodiment of the flow rate measuring device according to the present invention. In the figure, 13 indicates a piping line through which the fluid to be measured F1 flows. An inlet valve A, a first flow meter 11, an outlet valve B, an inlet valve C, a second flow meter 12, and an outlet valve D are connected to this piping line 13 in series.
入口弁Ａの上流側からバイパス弁Ｅを介して出
口弁Ｂと入口弁Ｃとの接続点にバイパス管１４が
配設され、これによつて第１流量計１１のバイパ
ス流路が形成されている。また出口弁Ｂと入口弁
Ｃとの接続点からバイパス弁Ｆを介して出口弁Ｄ
の下流側にバイパス管１５が配設され、これによ
つて第２流量計のバイパス流路が形成されてい
る。 A bypass pipe 14 is provided from the upstream side of the inlet valve A via the bypass valve E to the connection point between the outlet valve B and the inlet valve C, thereby forming a bypass flow path for the first flow meter 11. There is. In addition, the outlet valve D is connected to the connection point between the outlet valve B and the inlet valve C via the bypass valve F.
A bypass pipe 15 is disposed on the downstream side of the flowmeter, thereby forming a bypass flow path of the second flowmeter.
１６，１７は第１流量計１１、第２流量計１２
を校正するための校正流体F2を供給する校正配
管ラインを示している。校正用配管ライン１６は
ゲート弁Ｇを介して入口弁Ａと第１流量計１１と
の接続点に接続され、かつバイパス管１８および
校正用バイパス弁Ｉを介して入口弁Ｃと第２流量
計１２との接続点に接続されている。校正配管ラ
イン１７はゲート弁Ｊを介して第２流量計１２と
出口弁Ｄとの接続点に接続され、かつバイパス管
１９および校正用バイパス弁Ｈを介して第１流量
計１１とゲート弁Ｂとの接続点に接続されてい
る。なお、バイパス管１８は校正時において第１
流量計１１をバイパスする流路を形成し、バイパ
ス管１９は第２流量計１２をバイパスする流路を
形成する。 16 and 17 are the first flow meter 11 and the second flow meter 12
The calibration piping line that supplies calibration fluid F2 to calibrate is shown. The calibration piping line 16 is connected to the connection point between the inlet valve A and the first flow meter 11 via the gate valve G, and is connected to the connection point between the inlet valve C and the second flow meter via the bypass pipe 18 and the calibration bypass valve I. It is connected to the connection point with 12. The calibration piping line 17 is connected to the connection point between the second flowmeter 12 and the outlet valve D via the gate valve J, and is connected to the connection point between the first flowmeter 11 and the gate valve B via the bypass pipe 19 and the bypass valve H for calibration. connected to the connection point. Note that the bypass pipe 18 is connected to the first
A flow path that bypasses the flow meter 11 is formed, and the bypass pipe 19 forms a flow path that bypasses the second flow meter 12.
次に作用を説明する。被測定流体F1の通常測
定時においては、入口弁Ａ、出口弁Ｂ、入口弁Ｃ
および出口弁Ｄのみが開いており、他のすべての
弁は閉じる。したがつて、被測定流体F1は〔配
管ライン１３〕→〔入口弁Ａ〕→〔第１流量計１
１〕→〔出口弁Ｂ〕→〔入口弁Ｃ〕→〔第２流量
計１２〕→〔出口弁Ｄ〕→〔配管ライン１３〕の
経路で流れる。このとき流量は第１および第２流
量計１１，１２により同時に測定されることにな
る。 Next, the effect will be explained. During normal measurement of fluid to be measured F1 , inlet valve A, outlet valve B, and inlet valve C are
and only outlet valve D is open, all other valves are closed. Therefore, the fluid to be measured F 1 is transferred from [piping line 13] → [inlet valve A] → [first flow meter 1
1]→[Outlet valve B]→[Inlet valve C]→[Second flow meter 12]→[Outlet valve D]→[Piping line 13]. At this time, the flow rate is measured simultaneously by the first and second flowmeters 11 and 12.
校正時においては、例えば第１流量計１１の校
正を行う場合、入口弁Ａ、出口弁Ｂ、バイパス弁
Ｆ、校正用バイパス弁Ｉ、ゲート弁Ｊが閉じら
れ、残る他の弁Ｃ，Ｄ，Ｅ，Ｈ，Ｇが開くことに
なる。したがつて、被測定流体F1は〔配管ライ
ン１３〕→〔バイパス弁Ｅ〕→〔入口弁Ｃ〕→
〔第２流量計１２〕→〔出口弁Ｄ〕→〔配管ライ
ン１３〕の経路で流れ（実線矢印F1）、被測定流
体Ｆの流量は第２流量計１２により測定される。
一方、校正流体F2は〔校正配管ライン１６〕→
〔ゲート弁Ｇ〕→〔第１流量計１１〕→〔校正用
バイパス弁Ｈ〕→〔校正配管ライン１７〕の経路
で流れ（実線矢印F2）、第１流量計１１の校正が
行われることとなる。なお、上述と逆の場合は破
線の矢印で示し、説明は省略する。 During calibration, for example, when calibrating the first flowmeter 11, the inlet valve A, outlet valve B, bypass valve F, bypass valve I for calibration, and gate valve J are closed, and the remaining valves C, D, E, H, and G will open. Therefore, the fluid to be measured F 1 is [piping line 13] → [bypass valve E] → [inlet valve C] →
The fluid flows through the path of [second flow meter 12] → [outlet valve D] → [piping line 13] (solid arrow F 1 ), and the flow rate of the fluid F to be measured is measured by the second flow meter 12.
On the other hand, the calibration fluid F 2 is [calibration piping line 16] →
The flow (solid line arrow F 2 ) follows the path of [gate valve G] → [first flow meter 11] → [bypass valve H for calibration] → [calibration piping line 17], and the first flow meter 11 is calibrated. becomes. Note that the case opposite to the above is indicated by a broken arrow, and the explanation will be omitted.
このようにして、プロセスを停止させることな
く流量計の校正を行うことができる。 In this way, calibration of the flow meter can be performed without stopping the process.
以上の通り本発明によれば、２つの流量計を直
列に接続し、かつ上述のような配管構成としたこ
とにより、通常測定状態では２つの流量計で同時
に測定動作を行うことができる。それゆえ同時に
２つの測定信号が出力され、流量計相互の測定値
偏差を容易に得ることができる。その偏差に着目
すれば、流量計本体の異常か流量の変化によるも
のか容易に判別できる。即ち、２つの流量計のい
ずれか一方に異常が生じると、２つの流量計の間
の指示値に差が生じるが、その指示値の差が所定
値を越えたときには流量計に異常が生じたものと
判別し、２つの流量計を校正するようにし、この
ように被測定流体流量の増減に基づくものか２つ
の流量計のうちの一方に異常が生じたことに基づ
くものかを判別するようにして、異常時に対策を
迅速に行なうことができる。従つて、特に核物質
取扱施設等の高度な測定精度、高信頼性が要求さ
れる場合にはきわめて有効である。また、上述の
配管構成により流量計が有効に利用されることも
さることながら、プロセスを停止させることなく
流量計の校正、動作試験、故障修理をも容易に行
うことができる。 As described above, according to the present invention, two flowmeters are connected in series and the piping is configured as described above, so that the two flowmeters can perform measurement operations simultaneously in a normal measurement state. Therefore, two measurement signals are output at the same time, and the deviation of the measurement values between the flowmeters can be easily obtained. By paying attention to the deviation, it can be easily determined whether the error is due to an abnormality in the flow meter itself or a change in the flow rate. In other words, if an abnormality occurs in either of the two flowmeters, there will be a difference in the indicated values between the two flowmeters, but if the difference in the indicated values exceeds a predetermined value, an abnormality has occurred in the flowmeter. calibrate the two flowmeters, and determine whether the problem is due to an increase or decrease in the flow rate of the fluid to be measured or an abnormality has occurred in one of the two flowmeters. Therefore, countermeasures can be taken quickly in the event of an abnormality. Therefore, it is extremely effective particularly in cases where high measurement accuracy and high reliability are required, such as in nuclear material handling facilities. Furthermore, the above-mentioned piping configuration not only allows the flowmeter to be used effectively, but also allows the flowmeter to be easily calibrated, operated, and repaired without stopping the process.
第１図は従来の流量測定装置を示す回路図、第
２図は本発明による流量測定装置の実施例を示す
回路図である。
１１……第１流量計、１２……第２流量計、１
３……配管ライン、１４……バイパス管、１５…
…バイパス管、１６……校正配管ライン、１７…
…校正配管ライン、１８……校正バイパス管、１
９……校正バイパス管、Ａ……入口弁、Ｂ……出
口弁、Ｃ……入口弁、Ｄ……出口弁、Ｅ，Ｆ……
バイパス弁、Ｇ，Ｊ……ゲート弁、Ｈ，Ｉ……校
正用バイパス弁、F1……被測定流体、F2……校
正流体。
FIG. 1 is a circuit diagram showing a conventional flow rate measuring device, and FIG. 2 is a circuit diagram showing an embodiment of the flow rate measuring device according to the present invention. 11...First flow meter, 12...Second flow meter, 1
3...Piping line, 14...Bypass pipe, 15...
...Bypass pipe, 16...Calibration piping line, 17...
...Calibration piping line, 18...Calibration bypass pipe, 1
9...Calibration bypass pipe, A...Inlet valve, B...Outlet valve, C...Inlet valve, D...Outlet valve, E, F...
Bypass valve, G, J...Gate valve, H, I...Bypass valve for calibration, F1 ...Fluid to be measured, F2 ...Calibration fluid.
Claims (1)
Ａ、第１流量計１１、出口弁Ｂと入口弁Ｃ、第２
流量計１２、出口弁Ｄを直列に接続し、 入口弁Ａの上流側からバイパス弁Ｅを介して出
口弁Ｂと入口弁Ｃとの接続点にバイパス管１４
を、かつこの接続点からバイパス弁Ｆを介して出
口弁Ｄの下流側にバイパス管１５をそれぞれ接続
することにより第１流量計１１および第２流量計
１２を個々にバイパスするバイパス流路を形成
し、 入口弁Ａの下流側にゲート弁Ｇを介して校正用
配管ライン１６を接続し、かつ出口弁Ｄの上流側
にゲート弁Ｊを介して校正用配管ライン１７を接
続し、 ゲート弁Ｇの上流側から校正用バイパス弁Ｉを
介して入口弁Ｃと第２流量計１２との接続点に校
正用バイパス管１８を接続し、かつ第１流量計１
１と出口弁Ｂとの接続点から校正用バイパス弁Ｈ
を介してゲート弁Ｊの下流側に校正用バイパス管
１９を接続することにより第１流量計１１および
第２流量計１２を個々にバイパスする校正用バイ
パス流路を形成したことを特徴とする流量測定装
置。[Claims] 1. A piping line 13 through which a fluid to be measured flows is provided with an inlet valve A, a first flowmeter 11, an outlet valve B, an inlet valve C, and a second flowmeter.
The flow meter 12 and the outlet valve D are connected in series, and a bypass pipe 14 is connected from the upstream side of the inlet valve A to the connection point between the outlet valve B and the inlet valve C via the bypass valve E.
By connecting the bypass pipes 15 from this connection point to the downstream side of the outlet valve D via the bypass valve F, a bypass flow path that bypasses the first flow meter 11 and the second flow meter 12 individually is formed. Then, a calibration piping line 16 is connected to the downstream side of the inlet valve A via a gate valve G, and a calibration piping line 17 is connected to the upstream side of the outlet valve D via a gate valve J. A calibration bypass pipe 18 is connected from the upstream side of the calibration bypass valve I to the connection point between the inlet valve C and the second flow meter 12, and the first flow meter 1
1 and outlet valve B to the calibration bypass valve H.
A flow rate characterized in that a calibration bypass pipe 19 is connected to the downstream side of the gate valve J via a calibration bypass flow path that bypasses the first flow meter 11 and the second flow meter 12 individually. measuring device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7039080A JPS56166422A (en) | 1980-05-27 | 1980-05-27 | Fluid measuring apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7039080A JPS56166422A (en) | 1980-05-27 | 1980-05-27 | Fluid measuring apparatus |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS56166422A JPS56166422A (en) | 1981-12-21 |
| JPH0355770B2 true JPH0355770B2 (en) | 1991-08-26 |
Family
ID=13430061
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7039080A Granted JPS56166422A (en) | 1980-05-27 | 1980-05-27 | Fluid measuring apparatus |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS56166422A (en) |
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5913754A (en) * | 1982-07-14 | 1984-01-24 | Kuraray Co Ltd | Novel amide compound |
| US4827430A (en) * | 1987-05-11 | 1989-05-02 | Baxter International Inc. | Flow measurement system |
| JP4698899B2 (en) * | 2001-08-06 | 2011-06-08 | 三菱重工業株式会社 | Steam turbine power generation system and flow meter verification method in steam turbine power generation system |
| JP4656885B2 (en) * | 2004-07-20 | 2011-03-23 | 東京瓦斯株式会社 | Equipment for evaluating distribution characteristics of gas distribution equipment |
| JP4818073B2 (en) * | 2006-11-10 | 2011-11-16 | 株式会社アルバック | Film thickness measurement method |
| US20140060159A1 (en) * | 2012-08-31 | 2014-03-06 | Johnson & Johnson Consumer Companies, Inc. | Permeability flow cell and hydraulic conductance system |
| US9128020B2 (en) * | 2012-08-31 | 2015-09-08 | Johnson & Johnson Comsumer Inc. | Permeability flow cell and hydraulic conductance system |
| DE102013007871A1 (en) * | 2013-05-08 | 2014-11-13 | Rma Mess- Und Regeltechnik Gmbh & Co. Kg | Method and measuring device for flow measurement of a gas in a pipeline by means of a turbine wheel gas meter |
| GB2557670B (en) | 2016-12-15 | 2020-04-15 | Thermo Fisher Scient Bremen Gmbh | Improved gas flow control |
-
1980
- 1980-05-27 JP JP7039080A patent/JPS56166422A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS56166422A (en) | 1981-12-21 |
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