JPS5824759Y2 - Flow meter calibration device - Google Patents
Flow meter calibration deviceInfo
- Publication number
- JPS5824759Y2 JPS5824759Y2 JP1978010673U JP1067378U JPS5824759Y2 JP S5824759 Y2 JPS5824759 Y2 JP S5824759Y2 JP 1978010673 U JP1978010673 U JP 1978010673U JP 1067378 U JP1067378 U JP 1067378U JP S5824759 Y2 JPS5824759 Y2 JP S5824759Y2
- Authority
- JP
- Japan
- Prior art keywords
- flow
- pipe
- flow meter
- flow rate
- calibration device
- 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
Landscapes
- Measuring Volume Flow (AREA)
Description
【考案の詳細な説明】 この考案は流量計の校正装置に関する。[Detailed explanation of the idea] This invention relates to a flow meter calibration device.
ところで、上下水道施設、水力発電プラント、原子力発
電や火力発電の復水等の流体の流量測定には、口径りが
φ５００〜φ３０００程度までの巨大な流量計が用いら
れている。By the way, huge flowmeters with diameters of approximately 500 to 3000 mm are used to measure the flow rate of fluids such as water and sewage facilities, hydroelectric power plants, condensate water in nuclear power plants, and thermal power plants.
このような流量計には精度も高く、定期的に点検したい
という要求が出て来ている。These flowmeters have high accuracy, and there is a growing demand for periodic inspections.
この場合、流量計を取外して再点検すれば良いが、上記
のようなプラントは停止することが不可能である。In this case, the flowmeter can be removed and re-inspected, but it is impossible to shut down the plant as described above.
しかして、その流量は昼夜１月によって５年間を通じて
等で著しく変化することが多い。However, the flow rate often varies significantly from day to night to January, throughout the five year period, and so on.
たとえば上下水道施設では、昼間が夜間の数倍流れてい
るのが普通である。For example, in water and sewage facilities, it is normal for water to flow several times more during the day than at night.
かかる事情に鑑み、この考案では上述した流量の変化に
対応して添付の図面に示す如く、流量計１を取付けられ
た径りなる流量管２の主バルブ３の上下流間に径ｄ（＜
Ｄ、上下水道では一般にＤ：ｄ＝２〜４：１）なるバイ
パス管４を配設すると共に、バイパス管４に取外し可能
なる基準流量計５を取付け、基準流量計５の上下流にそ
れぞれバルブ６．７を設ける。In view of these circumstances, in this invention, in response to the above-mentioned flow rate change, as shown in the attached drawing, the diameter d (<
In water supply and sewerage systems, a bypass pipe 4 (generally D:d=2 to 4:1) is installed, a removable reference flowmeter 5 is attached to the bypass pipe 4, and valves are installed upstream and downstream of the reference flowmeter 5, respectively. 6.7 shall be provided.
さらに、流量計２の流量が所定値より低下した時を検出
する調節器１１を設ける。Further, a regulator 11 is provided to detect when the flow rate of the flow meter 2 falls below a predetermined value.
そして流量管２の流量が少なくなった時に調節器１１か
ら検出信号が出力されるので、この検出信号に基づいて
バルブ６及び７を開け、主バルブ３を閉めることにより
流量計１と基準流量計５とを直結させる。Then, when the flow rate of the flow pipe 2 becomes low, a detection signal is output from the regulator 11, so based on this detection signal, the valves 6 and 7 are opened and the main valve 3 is closed, thereby connecting the flowmeter 1 and the reference flowmeter. Directly connect with 5.
これにより、流量計１の校正を基準流量計５を用いて行
なうことができる。Thereby, the flowmeter 1 can be calibrated using the reference flowmeter 5.
さらに詳説すれば、流量計１の出力に前記のように調節
器１１を接続しておき、流量管２の流量が所定の値より
低下した時にこの低下を検知し、自動的にバルブ６及び
７を開けて主バルブ３を閉め、流量計１の出力と基準流
量計５の出力とを比較装置１２で比較する。More specifically, the regulator 11 is connected to the output of the flow meter 1 as described above, and when the flow rate of the flow pipe 2 drops below a predetermined value, this drop is detected and the valves 6 and 7 are automatically activated. is opened and the main valve 3 is closed, and the output of the flowmeter 1 and the output of the reference flowmeter 5 are compared by the comparator 12.
そして比較装置１２からの校正信号Ｃ５を校正ユニット
１３に伝送し、その校正後に主バルブ３を開け、基準流
量計５系のバルブ６及び７を閉じるようにする。Then, the calibration signal C5 from the comparator 12 is transmitted to the calibration unit 13, and after the calibration, the main valve 3 is opened and the valves 6 and 7 of the reference flowmeter 5 system are closed.
以上のようにこの考案の校正装置によれば、基準流量計
が取付けられたＤ＞ｄなる径の関係を有するバイパス管
を流量管の主バルブの上下間に設けるとともに、流量管
の流量が所定値より低下した時を検出する調節器を設け
、この検出信号に基づいて主バルブを閉してバイパス管
に全流量を流し、基準流量計の測定値を基準として流量
管に取付けられた流量計を検正し得るようにしたので、
低コストでかつ余りスペースをとらないで所要の校正を
簡単に行なうことができるという効果がある。As described above, according to the calibration device of this invention, a bypass pipe with a diameter relationship of D>d to which a reference flowmeter is attached is provided between the upper and lower sides of the main valve of the flow pipe, and the flow rate of the flow pipe is adjusted to a predetermined value. A regulator is provided to detect when the value has dropped below the specified value, and based on this detection signal, the main valve is closed to allow the full flow to flow through the bypass pipe. We made it possible to verify the
This has the advantage that required calibration can be easily performed at low cost and without taking up much space.
図はこの考案の一実施例を示す構成図である。
１・：、・・・・流量計、２・・・・・・流量管、３・
・・・・・主バルブ、４・・・・・・バイパス管、５・
・・・・・基準流量計、６，７・・・・・・バルブ、１
１・・・・・・調節器、１２・・・・・・比較装置、１
３・・・・・・校正ユニット。The figure is a configuration diagram showing an embodiment of this invention. 1.:,...flow meter, 2...flow tube, 3.
...Main valve, 4...Bypass pipe, 5.
...Reference flowmeter, 6,7...Valve, 1
1...Adjuster, 12...Comparison device, 1
3... Calibration unit.
Claims (1)
量計が取付けられたＤ＞ｄなる径の関係を有するバイパ
ス管を前記流量管の主バルブの上下流間に設け、かつ前
記流量管の流量が所定値より低下した時を検出する調節
器を設け、この検出信号に基づいて前記主バルブを閉じ
て前記バイパス管に全流量を流し前記基準流量計の測定
値を基準として前記流量計を校正し得るようにしたこと
を特徴とする流量計の校正装置。When the diameter of the flow pipe to which the flow meter is attached is D, a bypass pipe to which the reference flow meter is attached having a diameter relationship of D>d is provided between upstream and downstream of the main valve of the flow pipe, and the flow rate is A regulator is provided to detect when the flow rate of the pipe has decreased below a predetermined value, and based on this detection signal, the main valve is closed to allow the entire flow to flow through the bypass pipe, and the flow rate is adjusted based on the measurement value of the reference flowmeter. A calibration device for a flow meter, characterized in that the meter can be calibrated.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1978010673U JPS5824759Y2 (en) | 1978-01-31 | 1978-01-31 | Flow meter calibration device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1978010673U JPS5824759Y2 (en) | 1978-01-31 | 1978-01-31 | Flow meter calibration device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS54117177U JPS54117177U (en) | 1979-08-16 |
| JPS5824759Y2 true JPS5824759Y2 (en) | 1983-05-27 |
Family
ID=28823706
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1978010673U Expired JPS5824759Y2 (en) | 1978-01-31 | 1978-01-31 | Flow meter calibration device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5824759Y2 (en) |
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6350848Y2 (en) * | 1979-09-03 | 1988-12-27 | ||
| JPS6116229Y2 (en) * | 1980-05-21 | 1986-05-19 | ||
| JPS5720615A (en) * | 1980-07-12 | 1982-02-03 | Taimei Kinzoku Kogyo Kk | Peripheral device of terminal gas meter of gas supply flow passage |
| JPS5830990A (en) * | 1981-08-07 | 1983-02-23 | 株式会社 東京タツノ | Lubricating device |
| US4827430A (en) * | 1987-05-11 | 1989-05-02 | Baxter International Inc. | Flow measurement system |
| KR101444964B1 (en) * | 2006-12-05 | 2014-09-26 | 가부시키가이샤 호리바 에스텍 | Flow controller, flow measuring device testing method, flow controller testing system, and semiconductor manufacturing apparatus |
| DE102011100029C5 (en) * | 2011-04-29 | 2016-10-13 | Horiba Europe Gmbh | Device for measuring a fuel flow and calibration device therefor |
| US11099043B2 (en) * | 2016-02-26 | 2021-08-24 | Micro Motion, Inc. | Determining a corrected measured flow rate |
| JP2020144151A (en) * | 2020-06-05 | 2020-09-10 | マイクロ モーション インコーポレイテッド | Determining corrected measured flow rate |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS53123964U (en) * | 1977-03-07 | 1978-10-02 |
-
1978
- 1978-01-31 JP JP1978010673U patent/JPS5824759Y2/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS54117177U (en) | 1979-08-16 |
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