JPS604406B2 - Instrumental adjustment device for flowmeter - Google Patents
Instrumental adjustment device for flowmeterInfo
- Publication number
- JPS604406B2 JPS604406B2 JP4001780A JP4001780A JPS604406B2 JP S604406 B2 JPS604406 B2 JP S604406B2 JP 4001780 A JP4001780 A JP 4001780A JP 4001780 A JP4001780 A JP 4001780A JP S604406 B2 JPS604406 B2 JP S604406B2
- Authority
- JP
- Japan
- Prior art keywords
- rectifier
- impeller
- fluid
- measured
- instrumental
- 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
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F1/00—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow
- G01F1/05—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by using mechanical effects
- G01F1/10—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by using mechanical effects using rotating vanes with axial admission
- G01F1/12—Adjusting, correcting, or compensating means therefor
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、整流器と羽根車を被測定流体の流れ方向に沿
って配置して成る軸流流量計の器差調整装置に関し、特
に、整流器の流通口の面積を調整し得る調整板を被測定
流体の流れ方向と同０的に設け、該調整板を回動して整
流器の流通口の面積を変えて器差調整をするようにし、
それによって、羽根車を回転させる力を均一にして羽根
車の回転をスムースにさせ、装置の耐久性の向上を図っ
たものである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an instrumental error adjustment device for an axial flow meter that includes a rectifier and an impeller arranged along the flow direction of a fluid to be measured, and in particular, to an instrument error adjustment device for an axial flow meter, in which a rectifier and an impeller are arranged along the flow direction of a fluid to be measured. An adjustable adjustment plate is provided at the same angle as the flow direction of the fluid to be measured, and the adjustment plate is rotated to change the area of the flow port of the rectifier to perform instrumental error adjustment.
As a result, the force for rotating the impeller is made uniform, the impeller rotates smoothly, and the durability of the device is improved.
第１図は、本発明による器差調整装置を具備した流量計
の一例を示す概略側断面図で、図中、１は流量計ケース
、２は整流器、３はインナーケース、４は羽根車、５は
歯車、６は指針、７は下合板、８は上合板、９は窓ガラ
ス、１０はフランジ、１１はボルト、１２，１３はパツ
キンで、被測定流体は矢印方向に整流器２及び羽根車４
を通して流れ、周知のように、被測定流体の流量に応じ
て羽根車４を回転させ、その回転数を指針６によって表
示して被測定流体の積算流量を計量するものである。FIG. 1 is a schematic side sectional view showing an example of a flowmeter equipped with an instrumental difference adjustment device according to the present invention, in which 1 is a flowmeter case, 2 is a rectifier, 3 is an inner case, 4 is an impeller, 5 is a gear, 6 is a pointer, 7 is a lower plywood board, 8 is an upper plywood board, 9 is a window glass, 10 is a flange, 11 is a bolt, 12 and 13 are gaskets, and the fluid to be measured is connected to the rectifier 2 and the impeller in the direction of the arrow. 4
As is well known, the impeller 4 is rotated in accordance with the flow rate of the fluid to be measured, and the number of revolutions is displayed by a pointer 6 to measure the cumulative flow rate of the fluid to be measured.
上述のごとき流量計において、器差調整を行うため、従
来は、第１図に点線にて示すように、被測定流体の流れ
の中に１乃至２個の調整板２０を設け、該調整板２０を
軸２１のまわりに回動してその角度を変えるようにして
いる。In order to perform instrumental error adjustment in the above-mentioned flowmeter, conventionally, one or two adjustment plates 20 are provided in the flow of the fluid to be measured, as shown by dotted lines in FIG. 20 is rotated around a shaft 21 to change its angle.
しかし、この従来の器差調整装置は、被測定流体の流れ
を偏流させて器差調整を行うものであるため、被測定流
体が羽根車を通過する時、その偏流によって羽根車を回
転させる力が不均一となって羽根車の回転がスムースに
行われず、耐久性を低下させる原因となつていた。本発
明は、上述のごとき従来技術の欠点を解消するためにな
されたもので、第１図に参照番号３川こて示すように、
整流器２と羽根車３との間に被測定流体の流れと同Ｄ的
に単一の器差調整板を設け、この器差調整板３０を、第
２図に示すように、矢印方向に回動及び固定可能に設け
、該器差調整板３０を矢印方向に回動して整流器２の調
整板と器差調整板との協働作用によって該整流器２の流
通口Ａの面積を増幅し、それによって、器差調整を行う
ようにしたものである。However, this conventional instrumental adjustment device performs instrumental adjustment by deflecting the flow of the fluid to be measured, so when the fluid to be measured passes through the impeller, the force that rotates the impeller is generated by the biased flow. As a result, the rotation of the impeller cannot be performed smoothly, which causes a decrease in durability. The present invention has been made to eliminate the drawbacks of the prior art as described above, and as shown in FIG.
A single instrumental difference adjustment plate is provided between the rectifier 2 and the impeller 3 in the same direction as the flow of the fluid to be measured, and this instrumental difference adjustment plate 30 is rotated in the direction of the arrow as shown in FIG. The area of the flow port A of the rectifier 2 is amplified by the cooperative action of the adjustment plate of the rectifier 2 and the instrumental difference adjustment plate by rotating the instrumental difference adjustment plate 30 in the direction of the arrow. This allows for instrumental error adjustment.
なお、上記器差調整は、被測定流体の流量と羽根車の回
転との関係式、骨＝Ｃ宅ぞ
（ただしＱ：被測定流量、の：羽根車の角速度、Ｃ：定
数、ｒ：羽根車の平均回転半径、Ｆ：流通口の面積、８
：羽根角度）より・流通ロの面積Ｆを磯はせれば骨の関
鰍ミ変ることを利用したものである。The above instrumental error adjustment is based on the relational expression between the flow rate of the fluid to be measured and the rotation of the impeller. Average turning radius of the car, F: Area of distribution port, 8
:Blade angle) This takes advantage of the fact that if the area F of the distribution hole is raised, the shape of the bones will change.
以上の説明から明らかなように、本発明によると、被測
定流体中に偏流がなく、羽根車を回転させる力が均一と
なって羽根車をスムーズに回転させることができるので
、従来技術に比して耐久性を向上させることができる。As is clear from the above description, according to the present invention, there is no drift in the fluid to be measured, and the force for rotating the impeller is uniform, making it possible to rotate the impeller smoothly, compared to the conventional technology. can improve durability.
図面の簡単な説明第１図は、本発明による器差調整装置
が適用された流量計の一例を示す概略側断面図、第２図
は、本発明による器差調整装置の平面図である。BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a schematic side sectional view showing an example of a flowmeter to which an instrumental difference adjustment device according to the present invention is applied, and FIG. 2 is a plan view of the instrumental difference adjustment device according to the present invention.
１・…・・流量計ケース、２・・・・・・整流器、３・
…・・インナーケース、４・・・・・・羽根車、３０・
・・…器差調整板。1...Flowmeter case, 2... Rectifier, 3.
...Inner case, 4... Impeller, 30.
...Instrument difference adjustment board.
第１図 第２図Figure 1 Figure 2
Claims (1)
て成る軸流流量計において、整流器と羽根車との間に前
記整流器の整流板と協働して該整流器の流通口の面積を
調整する単一の調整板を前記被測定流体の流れと同心的
に回動及び固定可能に設けたことを特徴とする流量計の
器差調整装置。1. In an axial flow meter in which a rectifier and an impeller are arranged along the flow of the fluid to be measured, a rectifier is provided between the rectifier and the impeller in cooperation with a rectifier plate of the rectifier to reduce the area of the flow port of the rectifier. 1. An instrument difference adjustment device for a flowmeter, characterized in that a single adjustment plate is rotatable and fixed concentrically with the flow of the fluid to be measured.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4001780A JPS604406B2 (en) | 1980-03-28 | 1980-03-28 | Instrumental adjustment device for flowmeter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4001780A JPS604406B2 (en) | 1980-03-28 | 1980-03-28 | Instrumental adjustment device for flowmeter |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS56137112A JPS56137112A (en) | 1981-10-26 |
| JPS604406B2 true JPS604406B2 (en) | 1985-02-04 |
Family
ID=12569130
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4001780A Expired JPS604406B2 (en) | 1980-03-28 | 1980-03-28 | Instrumental adjustment device for flowmeter |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS604406B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0533375Y2 (en) * | 1987-10-20 | 1993-08-25 |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58134726U (en) * | 1982-03-05 | 1983-09-10 | 愛知時計電機株式会社 | Rectifier in water meter |
| JPS58162022U (en) * | 1982-04-23 | 1983-10-28 | 東光精機株式会社 | Axial flow impeller type flowmeter |
| JPS58162021U (en) * | 1982-04-23 | 1983-10-28 | 東光精機株式会社 | Axial flow impeller type flowmeter |
| CN112097871B (en) * | 2020-03-16 | 2024-01-02 | 宁波水表(集团)股份有限公司 | Flow error adjusting device of vertical spiral vane type water meter |
-
1980
- 1980-03-28 JP JP4001780A patent/JPS604406B2/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0533375Y2 (en) * | 1987-10-20 | 1993-08-25 |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS56137112A (en) | 1981-10-26 |
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