JPS6117378Y2 - - Google Patents
Info
- Publication number
- JPS6117378Y2 JPS6117378Y2 JP14821680U JP14821680U JPS6117378Y2 JP S6117378 Y2 JPS6117378 Y2 JP S6117378Y2 JP 14821680 U JP14821680 U JP 14821680U JP 14821680 U JP14821680 U JP 14821680U JP S6117378 Y2 JPS6117378 Y2 JP S6117378Y2
- Authority
- JP
- Japan
- Prior art keywords
- detector
- flowmeter
- volume
- reference volume
- verified
- 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
- 238000012795 verification Methods 0.000 claims description 33
- 239000012530 fluid Substances 0.000 claims description 8
- 238000010586 diagram Methods 0.000 description 7
- 238000001514 detection method Methods 0.000 description 4
- 238000009877 rendering Methods 0.000 description 2
- 230000007257 malfunction Effects 0.000 description 1
Landscapes
- Measuring Volume Flow (AREA)
Description
【考案の詳細な説明】
本考案は流量計検定装置に係り、基準体積管内
を移送される移送体の通過を３個所以上で夫々デ
イテクタスイツチにより検知し、基準体積管の異
なる体積区間ごとに得られる流量計数値と対応す
る基準体積の比を相互に比較することにより、検
定の有効・無効を簡単に判別することができるよ
うにした流量計検定装置を提供することを目的と
する。[Detailed description of the invention] The present invention relates to a flowmeter verification device, which detects the passage of a transfer body in a reference volume pipe at three or more locations using a detector switch, and detects the passage of a transport body in a reference volume pipe for each different volume section of the reference volume pipe. It is an object of the present invention to provide a flow meter verification device that can easily determine whether the verification is valid or invalid by comparing the ratio of the obtained flow rate count value to the corresponding reference volume.
例えば被検定流量計を基準体積管に接続し、被
検定流量計を通過する流体によりスヘア或いはペ
グ等の移送体を基準体積管内に移送せしめ、予め
デイテクタスイツチ等を用いて設定した所定の体
積区間の体積と、移送体が該体積区間を走行する
間に得られた被検定流量計の流量計数値とを比較
することにより被検定流量計の器差を較正するよ
うにした流量計検定装置が知られている。 For example, a flowmeter to be verified is connected to a reference volume pipe, and the fluid passing through the flowmeter to be verified moves a transfer object such as a hair or a peg into the reference volume pipe to reach a predetermined volume set in advance using a detector switch or the like. A flowmeter verification device that calibrates the instrumental error of a flowmeter to be verified by comparing the volume of the section with the flow rate count value of the flowmeter to be verified obtained while the transfer body travels through the volume section. It has been known.
しかるに、従来の流量計検定装置は、単に所定
の体積区間の始点と終点に夫々デイテクタスイツ
チを設けただけの構成であり、このため例えば基
準体積管の一部から検定に供した流体が外部に漏
洩していたり、或いは基準体積管が変形してしま
いその実際の体積が以前の実測値からずれてしま
い、基準体積管が検定基準としての用をなさなか
つたり、さらにはデイテクタスイツチが故障した
りしていた場合に、これらの欠陥を指摘できず、
このため検定自体の無効であることに気付かない
まま、正確でないデータをもとに流量計を検定し
てしまうことになる等の欠点があつた。 However, the conventional flow meter verification device has a configuration in which detector switches are simply provided at the start and end points of a predetermined volume section, and therefore, for example, the fluid subjected to verification from a part of the reference volume pipe is exposed to the outside. If the reference volume tube is leaking, or the reference volume tube is deformed and its actual volume deviates from the previous measured value, the reference volume tube is no longer useful as a verification standard, or even the detector switch is malfunctioning. If the company was doing something like
For this reason, there were drawbacks such as the flowmeter being verified based on inaccurate data without realizing that the verification itself was invalid.
本考案は上記欠点を除去したものであり、以下
図面とともにその一実施例につき説明する。第１
図は本考案になる流量計検定装置の一実施例の概
略構成図、第２図は上記流量計検定装置各部の信
号波形線図を示す。 The present invention eliminates the above-mentioned drawbacks, and an embodiment thereof will be described below with reference to the drawings. 1st
The figure is a schematic diagram of an embodiment of the flowmeter verification device according to the present invention, and FIG. 2 is a signal waveform diagram of each part of the flowmeter verification device.
第１図中、流量計検定装置１はＵ字状のバイデ
イレクシヨナル型の基準体積管２の始端部と終端
部を夫々四方切換弁３のポート３ａ，３ｂに連通
接続し、四方切換弁３の残るポート３ｃ，３ｄに
夫々流入管４と流出管５を接続するとともに、被
検定流量計６を流入管４の途中に設けた構成とさ
れている。 In FIG. 1, the flow meter verification device 1 connects the starting end and the terminal end of a U-shaped by-directional reference volume pipe 2 to ports 3a and 3b of a four-way switching valve 3, respectively, to perform four-way switching. An inflow pipe 4 and an outflow pipe 5 are connected to the remaining ports 3c and 3d of the valve 3, respectively, and a flow meter 6 to be verified is provided in the middle of the inflow pipe 4.
本実施例の場合、基準体積管２内には移送体と
して管内径と略同径もしくはそれより僅かに大往
のスヘア７が移動自在に収納されており、スヘア
７の走行区間のうち予め管体積がV1として正確
に実測済みの区間の始点と終点にはデイテクタス
イツチ８，９が設けてあり、又両デイテクタスイ
ツチ８，９に挾まれた走行区間中所定位置には２
個のデイテクタスイツチ１０，１１が設けてあ
る。尚、デイテクタスイツチ１０，１１間の体積
V2は正確に実測してある。 In the case of this embodiment, a shair 7 having a diameter approximately equal to or slightly larger than the inner diameter of the tube is movably housed as a transfer body in the reference volume tube 2. Detector switches 8 and 9 are provided at the start and end points of the section whose volume has been accurately measured as V 1 , and 2
Detector switches 10 and 11 are provided. Furthermore, the volume between the detector switches 10 and 11
V 2 has been accurately measured.
本実施例の場合、被検定流量計６によつて計量
された流量は流量発信器６ａによつて発信され、
上記した４個のデイテクタスイツチ８，９，１
０，１１からのスヘア通過検知信号によつて開閉
されるゲート回路１２を通り、夫々基準体積管
V1，V2に対応するカウンタ１３，１４に供給さ
れる。尚、ゲート回路１２とカウンタ１３，１４
は２個の計数回路１５を構成する。 In the case of this embodiment, the flow rate measured by the flowmeter to be verified 6 is transmitted by the flow rate transmitter 6a,
The above four detector switches 8, 9, 1
The reference volume tubes pass through gate circuits 12 that are opened and closed by the hair passage detection signals from 0 and 11, respectively.
The signals are supplied to counters 13 and 14 corresponding to V 1 and V 2 . Note that the gate circuit 12 and counters 13 and 14
constitute two counting circuits 15.
検定に際し給送開始すると、被検定流量計６を
通つた流体は四方切換弁３のポート３ｃ，３ａを
通つて基準体積管２の始端部に供給される。この
ため始端部にあつたスヘア７は流体に押されて管
２内をを走行開始する。 When the supply starts during the verification, the fluid that has passed through the flowmeter 6 to be verified is supplied to the starting end of the reference volume pipe 2 through the ports 3c and 3a of the four-way switching valve 3. Therefore, the hair 7 at the starting end is pushed by the fluid and starts traveling inside the pipe 2.
スヘア７がデイテクタスイツチ８を通過する
と、デイテクタスイツチ８からの通過検知信号８
ｓによりゲート回路１２内のフリツプ・フロツプ
１６がセツトされ、被検定流量計６の流量発信器
６ａから発信された流量パルスｑがゲート回路１
２を介してカウンタ１３に供給される。 When the hair 7 passes the detector switch 8, a passage detection signal 8 is sent from the detector switch 8.
The flip-flop 16 in the gate circuit 12 is set by s, and the flow pulse q transmitted from the flow rate transmitter 6a of the flow meter 6 to be verified is transmitted to the gate circuit 1.
2 to the counter 13.
同様にスヘア７がデイテクタスイツチ１０を通
過すると、デイテクタスイツチ１０からの通過検
知信号１０ｓによりゲート回路１２内のフリツ
プ・フロツプ１７がセツトされ、カウンタ１４が
計数開始する。こうして、デイテクタスイツチ
８，１０を通過して基準体積管２内を移送された
スヘア７がデイテクタスイツチ１１を通過すると
きに、デイテクタスイツチ１１からのリセツト信
号１１ｓによりフリツプ・フロツプ１７がリセツ
トされ、カウンタ１４は流量パルスｑの計数を停
止する。 Similarly, when the hair 7 passes through the detector switch 10, the flip-flop 17 in the gate circuit 12 is set by the passage detection signal 10s from the detector switch 10, and the counter 14 starts counting. In this way, when the hair 7 that has passed through the detector switches 8 and 10 and is transferred into the reference volume tube 2 passes through the detector switch 11, the flip-flop 17 is reset by the reset signal 11s from the detector switch 11. Then, the counter 14 stops counting the flow rate pulses q.
又、同様にスヘア７がデイテクタスイツチ９を
通過するときに通過検知信号９ｓによりフリツ
プ・フロツプ１６がリセツトされ、カウンタ１３
は流量パルスｑの計数を停止する。 Similarly, when the hair 7 passes through the detector switch 9, the flip-flop 16 is reset by the passage detection signal 9s, and the counter 13 is reset.
stops counting the flow rate pulses q.
こうして、スヘア７が基準体積管２の終端部に
移送されるまでの間にカウンタ１３，１４には
夫々流量計数値Q1，Q2が計数される。ここで、
Q1は信号８ｓが出力されてから信号９ｓが出力
されるまでの間の流量パルスｑが計数積算された
ものであり、Q2は信号１０ｓが出力されてから
信号１１ｓが出力されるまでの間の流量パルスｑ
が計数積算されたものである。 In this way, the flow rate values Q 1 and Q 2 are counted by the counters 13 and 14, respectively, until the hair 7 is transferred to the terminal end of the reference volume tube 2. here,
Q 1 is the result of counting and integrating the flow rate pulses q from when the signal 8s is output to when the signal 9s is output, and Q 2 is the result from when the signal 10s is output until the signal 11s is output. flow rate pulse between q
are counted and integrated.
従つて、流量計数値Q1，Q2は基準体積V1，V2
に対応しており、検定が有効に行なわれたかどう
かは計数値と対応する基準体積の比、Ｖ１／Ｑ１とＶ２
／Ｑ２を
比較することにより判別される。これらの比Ｖ１／Ｑ１
とＶ２／Ｑ２が等しい場合は、スイツチ８，９間での検
定とスイツチ１０，１１間での検定が同一条件で
行なわれたことを示しており、従つて検定は有効
であり、得られた流量計数値Q1，Q2は検定デー
タとして採用できることが判る。 Therefore, the flow rate values Q 1 , Q 2 are the reference volumes V 1 , V 2
, and whether or not the verification was performed effectively depends on the ratio of the counted value and the corresponding reference volume, V 1 /Q 1 and V 2
/ Q2 is determined by comparing. If these ratios V 1 /Q 1 and V 2 /Q 2 are equal, this indicates that the test between switches 8 and 9 and the test between switches 10 and 11 were performed under the same conditions, and the Therefore, it can be seen that the verification is effective and the obtained flow rate count values Q 1 and Q 2 can be used as verification data.
又、Ｖ１／Ｑ１とＶ２／Ｑ２が一致しない場合は、基
準体積管
２の一部から検定に供した流体が外部に漏洩して
いるか、或いは基準体積管２の変形により区間体
積V2或いは全体の体積V1の実際の値が以前の実
測値からずれてしまい、基準体積管２が検定基準
としての用をなさなくなつてしまつたか、さらに
はデイテクタスイツチ８，９，１０，１１のいず
れかが故障したか等の無効原因があることを知る
ことができる。 In addition, if V 1 /Q 1 and V 2 /Q 2 do not match, the fluid used for verification may be leaking to the outside from a part of the reference volume tube 2, or the section volume may be changed due to deformation of the reference volume tube 2. The actual value of V 2 or the total volume V 1 has deviated from the previously measured value, rendering the reference volume tube 2 useless as a verification standard, or the detector switches 8, 9, It is possible to know that there is an invalid cause, such as whether one of 10 and 11 has failed.
従つて、比Ｖ１／Ｑ１とＶ２／Ｑ２が一致しない場合
は、検定
作業自体が無効であるから、作業を中止して無効
原因を究明するとよい。 Therefore, if the ratios V 1 /Q 1 and V 2 /Q 2 do not match, the verification work itself is invalid, so it is better to stop the work and investigate the cause of the invalidity.
尚、上記実施例においては、デイテクタスイツ
チ８，９間の体積V1とデイテクタスイツチ１
０，１１間の体積V2を検定基準として用いた
が、例えば第３図に示す流量計検定装置２１の如
く、デイテクタスイツチ１０，９間の体積V3に
対応するフリツプ・フロツプ２２とカウンタ２３
及びデイテクタスイツチ８，１１間の体積V4に
対応するフリツプ・フロツプ２４とカウンタ２５
をさらに設けた構成とし、カウンタ２３，２５の
流量計数値Q3とQ4と体積V3，V4の比をつけ加
え、全部で４個の比Ｖ１／Ｑ１、Ｖ２／Ｑ２、Ｖ３／Ｑ
３、Ｖ４／Ｑ４を相互に比
較するようにし、これにより前記流量計検定装置
１よりもさらに正確に検定の有効・無効を判別す
ることができる。 In the above embodiment, the volume V 1 between the detector switches 8 and 9 and the detector switch 1
The volume V 2 between the detector switches 10 and 9 was used as the verification standard, but for example, as in the flow meter verification device 21 shown in FIG. 23
and a flip-flop 24 and a counter 25 corresponding to the volume V 4 between the detector switches 8 and 11.
is further provided, and the ratios of the flow rate counts Q 3 and Q 4 of the counters 23 and 25 and the volumes V 3 and V 4 are added, resulting in a total of four ratios V 1 /Q 1 , V 2 /Q 2 , V 3 /Q
3 and V 4 /Q 4 are compared with each other, thereby making it possible to determine whether the verification is valid or invalid more accurately than the flow meter verification device 1 described above.
又、上記各実施例において、デイテクタスイツ
チの数は４個に限らず、５個以上でも或いは３個
でもよく、例えば始点、中間点、終点の３個のデ
イテクタスイツチを用いた場合には、始点と終点
間、始点と中間点間、中間点と終点間の３区間の
体積を基準体積とすることができる。 Further, in each of the above embodiments, the number of detector switches is not limited to four, but may be five or more, or three. For example, when three detector switches are used at the starting point, intermediate point, and ending point, , between the starting point and the ending point, between the starting point and the intermediate point, and between the intermediate point and the ending point can be used as the reference volume.
又、上記各実施例において、検定終了後は四方
切換弁３を切換えることによりポート３ｃと３
ｂ、ポート３ａと３ｄを相互に連通し、スヘア７
を終端部から始端部に送り返すことができる。そ
の場合、ゲート回路１２に接続を切換えておくこ
とにより、スヘア７の送り返しを利用して被検定
流量計６の検定を行なうことが可能である。 In addition, in each of the above embodiments, after the verification is completed, the ports 3c and 3 are switched by switching the four-way switching valve 3.
b. Connect ports 3a and 3d to each other, and connect Shair 7
can be sent back from the end to the start. In that case, by switching the connection to the gate circuit 12, it is possible to verify the flowmeter 6 to be verified using the return of the hair 7.
又、上記実施例において、移送体としてはスヘ
アに限らずペグ等を用いてもよい。 Further, in the above embodiments, the transfer body is not limited to the hair, but pegs or the like may be used.
上述の如く、本考案になる流量計検定装置は、
予め体積が正確に判つており被検定流量計に接続
された基準体積管と、該被検定流量計を通過する
流体によつて該基準体積管内を移送される移送体
と、該基準体積管に沿い所定の体積区間ごとに設
けられ、該移送体の通過を検知する３個以上のデ
イテクタスイツチと、該３個以上のデイテクタス
イツチのうち適宜選択した２個のデイテクタスイ
ツチの組合せに対して設けられ、夫々該被検定流
量計の計量した流量信号を一方のデイテクタスイ
ツチが該移送体の通過を検知してから他方のデイ
テクタスイツチが該移送体の通過を検知するまで
の間計数する２個以上の計数回路とから構成して
いるため、基準体積管の全体又は部分の体積に対
応する夫々の計数値を比較することにより、検定
が有効であるか或いは無効であるかを２個以上の
データをもとに簡単かつ正確に判別することがで
き、従つて例えば比較する２個の区間の体積に対
する対応する計数値の比が一致する場合には検定
が有効であるとしえ、又これと異なりこれらの比
が一致しない場合には、例えば基準体積管の一部
から検定に供した流体が外部に漏洩しているか、
或いは基準体積管が変形によりその区間体積或い
は全体の体積の実際の値が以前の実測値からずれ
てしまい、基準体積管が検定基準としての用をな
さなくなつてしまつたか、さらにはデイテクタス
イツチのいずれかが故障したか等の無効原因があ
ることを簡単に知ることができ、これにより全く
無駄な検定を即座に中止することができる等の特
長を有する。 As mentioned above, the flow meter verification device according to the present invention is
A reference volume pipe whose volume is accurately determined in advance and connected to the flowmeter to be verified; a transfer body that is transported within the reference volume pipe by the fluid passing through the flowmeter to be verified; For a combination of three or more detector switches that are provided in each predetermined volume section along the route and detect the passage of the transport object, and two detector switches that are appropriately selected from among the three or more detector switches. The flow rate signals measured by the respective flowmeters to be tested are counted from when one detector switch detects the passing of the conveying body until the other detector switch detects the passage of the conveying body. Since it is composed of two or more counting circuits, it is possible to determine whether the verification is valid or invalid by comparing the respective counted values corresponding to the volume of the whole or part of the reference volume tube. It can be easily and accurately determined based on data of more than 1,000,000,000,000,000,000,000, On the other hand, if these ratios do not match, for example, the fluid used for verification may have leaked to the outside from a part of the reference volume tube, or
Or, due to deformation of the reference volume tube, the actual value of its section volume or overall volume deviates from the previous measured value, rendering the reference volume tube useless as a verification standard, or even worse, the detector It has the advantage that it is easy to know that there is an invalid cause such as a malfunction in one of the switches, and as a result, completely useless verification can be stopped immediately.
第１図は本考案になる流量計検定装置の一実施
例の概略構成図、第２図は上記流量計検定装置各
部の信号波形線図、第３図は本考案になる流量計
検定装置の他の実施例の概略構成図、第４図はそ
の各部の信号波形線図である。
１，２１……流量計検定装置、２……基準体積
管、６……被検定流量計、７……スヘア、８，
９，１０，１１……デイテクタスイツチ、１５…
…計数回路。
Fig. 1 is a schematic configuration diagram of an embodiment of the flowmeter verification device of the present invention, Fig. 2 is a signal waveform diagram of each part of the flowmeter verification device, and Fig. 3 is a diagram of the flowmeter verification device of the present invention. A schematic configuration diagram of another embodiment, FIG. 4 is a signal waveform diagram of each part thereof. 1, 21...Flowmeter verification device, 2...Reference volume tube, 6...Flowmeter to be tested, 7...Shair, 8,
9, 10, 11...detector switch, 15...
...Counting circuit.
Claims (1)
続された基準体積管と、該被検定流量計を通過す
る流体によつて該基準体積管内を移送される移送
体と、該基準体積管に沿い所定の体積区間ごとに
設けられ、該移送体の通過を検知する３個以上の
デイテクタスイツチと、該３個以上のデイテクタ
スイツチのうち適宜選択した２個のデイテクタス
イツチの組合せに対して設けられ、夫々該被検定
流量計の計量した流量信号を一方のデイテクタス
イツチが該移送体の通過を検知してから他方のデ
イテクタスイツチが該移送体の通過を検知するま
での間計数する２個以上の計数回路とから構成し
てなる流量計検定装置。 A reference volume pipe whose volume is accurately known in advance and connected to the flowmeter to be verified; a transfer body that is transported within the reference volume pipe by the fluid passing through the flowmeter to be verified; For a combination of three or more detector switches that are provided in each predetermined volume section along the route and detect the passage of the transport object, and two detector switches that are appropriately selected from among the three or more detector switches. The flow rate signals measured by the respective flowmeters to be tested are counted from the time when one detector switch detects the passage of the conveyor until the other detector switch detects the passage of the conveyor. A flow meter verification device consisting of two or more counting circuits.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14821680U JPS6117378Y2 (en) | 1980-10-17 | 1980-10-17 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14821680U JPS6117378Y2 (en) | 1980-10-17 | 1980-10-17 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5770122U JPS5770122U (en) | 1982-04-27 |
| JPS6117378Y2 true JPS6117378Y2 (en) | 1986-05-28 |
Family
ID=29507679
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP14821680U Expired JPS6117378Y2 (en) | 1980-10-17 | 1980-10-17 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6117378Y2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104501915A (en) * | 2008-02-27 | 2015-04-08 | 丹尼尔度量和控制公司 | Flow Meter Proving Method And System |
-
1980
- 1980-10-17 JP JP14821680U patent/JPS6117378Y2/ja not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5770122U (en) | 1982-04-27 |
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