JPH0619052Y2 - Liquid flow meter - Google Patents
Liquid flow meterInfo
- Publication number
- JPH0619052Y2 JPH0619052Y2 JP1987092463U JP9246387U JPH0619052Y2 JP H0619052 Y2 JPH0619052 Y2 JP H0619052Y2 JP 1987092463 U JP1987092463 U JP 1987092463U JP 9246387 U JP9246387 U JP 9246387U JP H0619052 Y2 JPH0619052 Y2 JP H0619052Y2
- Authority
- JP
- Japan
- Prior art keywords
- weir
- cylinder
- space
- upstream space
- flow rate
- 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 - Lifetime
Links
Landscapes
- Measuring Volume Flow (AREA)
Description
【考案の詳細な説明】 産業上の利用分野 本考案は液体の流量を計る流量計に関する。液体の流量
は、堰の上流の液位と堰を通過する流量との関係が判っ
ていれば、堰の上流の液位を測定して求めることができ
る。本考案は、特に、この様な堰を備えた流量計の堰の
構造に関する。堰式流量計は、特に蒸気配管に発生する
復水の計量に有用である。何故ならば、復水は圧力が変
動すると再蒸発するが、堰の場合は、その前後が同圧
で、復水が再蒸発せずに通過するからである。TECHNICAL FIELD The present invention relates to a flow meter for measuring the flow rate of a liquid. The liquid flow rate can be determined by measuring the liquid level upstream of the weir, if the relationship between the liquid level upstream of the weir and the flow rate passing through the weir is known. The present invention particularly relates to the structure of a weir of a flow meter provided with such a weir. The weir type flow meter is particularly useful for measuring condensed water generated in the steam pipe. This is because the condensate re-evaporates when the pressure changes, but in the case of a weir, the condensate has the same pressure before and after it and the condensate passes without re-evaporation.
従来の技術 本出願人は、先に特願昭５９−１６７４１０号として、
堰式流量計を出願した。これは、ケーシングの中を鉛直
方向の堰壁で、被測定系に接続する入口が上部に開口し
た上流空間と、液体の排出口が下部に開口した下流空間
とに仕切り、上流空間と下流空間は堰壁の上方で連結
し、堰壁に堰を開け、排出口に液体を自動的に排出する
フロート弁を取り付け、上流空間の液位をフロート等の
手段を用いて測定する様にしたものである。2. Description of the Related Art The applicant has previously filed Japanese Patent Application No. 59-167410.
We applied for a weir type flow meter. This is a vertical weir wall that divides the casing into an upstream space with an inlet opening to the upper part that connects to the system to be measured and a downstream space with a liquid outlet opening to the bottom. Is connected above the weir wall, the weir is opened in the weir wall, a float valve that automatically discharges liquid is attached to the discharge port, and the liquid level in the upstream space is measured using a means such as a float. Is.
この堰式流量計は、堰の幅で流量の測定精度が決定さ
れ、堰の幅およびその高さで測定可能な最大流量が決定
される。即ち、堰の幅が狭い程、流量の測定精度は向上
し、堰の幅と高さが大きい程、測定可能流量が大きくな
る。In this weir type flow meter, the measurement accuracy of the flow rate is determined by the width of the weir, and the maximum flow rate that can be measured is determined by the width and height of the weir. That is, the narrower the width of the weir, the higher the measurement accuracy of the flow rate, and the larger the width and height of the weir, the larger the measurable flow rate.
本発明が解決しようとする問題点 上記のものでは、小流量時の精度を向上できない問題が
ある。即ち、所望の精度と最大流量が得られる様に堰壁
に堰を一つ形成しているためである。堰の幅を狭くすれ
ば、精度は良くなるが、堰を高くしなければならず、ケ
ーシングが大形になってしまう。Problems to be Solved by the Present Invention With the above, there is a problem that the accuracy cannot be improved when the flow rate is small. That is, one weir is formed on the weir wall so that the desired accuracy and maximum flow rate can be obtained. If the width of the weir is narrowed, the accuracy will be improved, but the weir must be raised and the casing becomes large.
本考案の技術的課題は、従って、ケーシングを大きくす
ることなしに、流量の測定精度を高めることである。The technical problem of the present invention is therefore to increase the accuracy of flow rate measurement without enlarging the casing.
問題点を解決するための手段 上記の技術的課題を解決するために講じた本考案の技術
的手段は、ケーシングの中を鉛直方向の仕切筒で、被測
定系に接続する入口が上部に開口した上流空間と、液体
の排出口が下部に開口した下流空間とに仕切り、仕切筒
の上部に入口と上流空間を連通する上部開口を、下部に
上流空間と下流空間を連通する下部開口を形成し、仕切
筒内に外部から回転操作可能に単一の堰筒を配置し、堰
筒の上部に上流空間と下流空間を連通する通孔と、その
下部に堰幅の異なる複数個の堰を横に並べて形成し、堰
筒と仕切筒の間にシール部材を配置し、排出口に液体を
自動的に排出するフロート弁を取り付け、上流空間の液
位を堰筒内に配置したフロート等の手段を用いて測定す
る様にしたものである。Means for Solving the Problems The technical means of the present invention taken to solve the above technical problem is a vertical partition tube in the casing, and the inlet for connecting to the measured system is opened at the top. It is divided into an upstream space and a downstream space where the liquid outlet is opened to the lower part, and an upper opening that connects the inlet and the upstream space is formed on the upper part of the partition cylinder, and a lower opening that connects the upstream space and the downstream space is formed on the lower part. However, a single weir cylinder is arranged inside the partition cylinder so that it can be rotated from the outside, and a through hole that connects the upstream space and the downstream space is provided in the upper part of the weir cylinder, and a plurality of weirs with different weir widths are provided in the lower part. A float valve that is formed side by side and has a seal member arranged between the weir cylinder and the partition cylinder, has a float valve that automatically discharges liquid at the discharge port, and arranges the liquid level of the upstream space in the weir cylinder. The measurement is performed using a means.
作用 上記の技術的手段の作用は下記の通りである。Action The action of the above technical means is as follows.
複数個堰のうち、少なくとも一つは、所望の精度と最大
流量が得られる堰幅に形成し、残りの堰は堰幅を狭く形
成する。At least one of the plurality of weirs is formed to have a weir width capable of obtaining desired accuracy and maximum flow rate, and the remaining weirs are formed to have a narrow weir width.
堰筒を回転せしめて、被測定系の流量の流量が大きい場
合には、堰幅の広い堰を、流量が小さい場合には、堰幅
の狭い堰を、仕切筒の下部開口に連結する。The weir cylinder is rotated to connect a weir with a wide weir width when the flow rate of the system to be measured is high, and a weir with a narrow weir width when the flow rate is low, to the lower opening of the partition cylinder.
液体は入口から上流空間に入り、堰および下部開口を通
って、下流空間に流出し、排出口から外部に排出され
る。上流空間の液位と堰を通過する流量の関係は判って
いるので、上流空間の液位を計測して、堰を通過する流
量を求める。The liquid enters the upstream space through the inlet, flows through the weir and the lower opening into the downstream space, and is discharged to the outside through the discharge port. Since the relationship between the liquid level in the upstream space and the flow rate through the weir is known, the liquid level in the upstream space is measured and the flow rate through the weir is determined.
堰筒を回転せしめて、小流量時の測定に際しては、堰幅
の狭い堰を用いるので、流量の測定精度が良くなる。堰
筒に複数個の堰を横に並べて形成しているので、堰の高
さ、ケーシングが大形になることはない。When the weir cylinder is rotated and a weir with a narrow weir is used when measuring at a small flow rate, the flow rate measurement accuracy is improved. Since a plurality of weirs are arranged side by side in the weir cylinder, the height of the weir and the casing do not become large.
考案の効果 本考案は下記の特有の効果を生じる。Effect of the Invention The present invention has the following unique effects.
堰筒を回転せしめて、小流量時の測定に際しては、堰幅
の狭い堰を用いるので、流量の測定精度が良くなる。When the weir cylinder is rotated and a weir with a narrow weir is used when measuring at a small flow rate, the flow rate measurement accuracy is improved.
また、堰筒に複数個の堰を横に並べて形成しているの
で、堰の高さ、ケーシングが大形になることはない。Further, since a plurality of weirs are arranged side by side in the weir cylinder, the height of the weir and the casing will not be large.
実施例 上記の技術的手段の具体例を示す実施例を説明する（第
１図参照）。Example An example showing a specific example of the above technical means will be described (see FIG. 1).
流量計の検出部１０のケーシングは本体１２に蓋１４を
ボルト（図示せず）で取り付けて構成する。The casing of the detector 10 of the flowmeter is constructed by attaching a lid 14 to the main body 12 with bolts (not shown).
ケーシングの内部に仕切筒部材１６ａ，１６ｂを配置す
る。仕切筒部材１６ａ，１６ｂの内部および上方は上流
空間１８を成し、外周および下方は下流空間２０を成
す。被測定系に接続する入口２２は仕切筒部材１６ａの
上部に開けた上部開口２４を通して上流空間１８に連結
する。下流空間２０の下部に液体の排出口２６が開口
し、立上がり通路を通して出口２８に続く。上流空間１
８と下流空間２０は仕切筒部材１６ｂに開けた下部開口
６４を通して連結する。The partition cylinder members 16a and 16b are arranged inside the casing. The inside and the upper part of the partition cylinder members 16a and 16b form an upstream space 18, and the outer circumference and the lower part form a downstream space 20. The inlet 22 connected to the system to be measured is connected to the upstream space 18 through an upper opening 24 opened at the top of the partition cylinder member 16a. A liquid discharge port 26 opens at the bottom of the downstream space 20 and continues to the outlet 28 through a rising passage. Upstream space 1
8 and the downstream space 20 are connected through a lower opening 64 opened in the partition cylinder member 16b.
仕切筒部材１６ａ，１６ｂ内に堰筒３０を配置し、両者
の間に環状のシール部材３２，３４を配置して気密を保
つ。堰筒３０には、堰幅の異なる４つの堰３６と通孔３
８および液体を導入する開口４０を形成している。The weir cylinder 30 is arranged in the partition cylinder members 16a, 16b, and the annular seal members 32, 34 are arranged between them to keep airtightness. The weir cylinder 30 has four weirs 36 and through holes 3 having different weir widths.
8 and an opening 40 for introducing the liquid are formed.
本体１および仕切筒部材１６ａを貫通して堰筒３０の下
部に回転棒４２を固定し、外部から回転操作できるよう
にする。The rotating rod 42 is fixed to the lower part of the weir cylinder 30 by penetrating the main body 1 and the partition cylinder member 16a so that the rotating rod 42 can be rotated from the outside.
蓋１４の上には断熱板４４、支持部材４６，４８を取り
付け、部材４８の中央にポテンショ・メータ５０を配置
する。ポテンショ・メータ５０を覆って保護キャップ５
２を取り付ける。その内部の電気配線や接続端子等の部
品の図示は省略する。A heat insulating plate 44 and support members 46 and 48 are mounted on the lid 14, and a potentiometer 50 is arranged at the center of the member 48. Protective cap 5 covering the potentiometer 50
Attach 2. Illustration of parts such as electric wiring and connection terminals inside thereof is omitted.
ポテンショ・メータ５０から下方に、蓋１４を気密的に
貫通して、堰筒３０の中央下部まで、厚みの小さい管５
４を延ばす。その周囲に球形の中空のフロート５６を配
置する。フロート５６の中央には管５８が取り付けてあ
り、管５４に摺動自在に嵌め合せてある。フロート５６
の管５８には磁石６０を取り付け、管５４の中に収容し
たポテンショ・メータ５０の作動棒６２には磁石６４を
取り付ける。From the potentiometer 50, the pipe 5 that is airtightly penetrates through the lid 14 to the lower center of the weir cylinder 30 and has a small thickness.
Extend four. A spherical hollow float 56 is arranged around it. A tube 58 is attached to the center of the float 56 and is slidably fitted to the tube 54. Float 56
A magnet 60 is attached to the tube 58 of the above, and a magnet 64 is attached to the operating rod 62 of the potentiometer 50 housed in the tube 54.
第１図は本考案の実施例の液体用流量計の断面図であ
る。 １２：本体、１４：蓋 １６ａ，１６ｂ：仕切筒部材 １８：上流空間、２０：下流空間 ２２：入口、２４：上部開口 ２６：排出口、２８：出口 ３０：堰筒、３２：シール部材 ３４：シール部材、３６：堰 ３８：通孔、４２：回転棒 ５０：ポテンショ・メータ ５６：フロートFIG. 1 is a sectional view of a liquid flowmeter according to an embodiment of the present invention. 12: Main body, 14: Lids 16a, 16b: Partition cylinder member 18: Upstream space, 20: Downstream space 22: Inlet, 24: Upper opening 26: Discharge port, 28: Outlet 30: Weir cylinder, 32: Seal member 34: Seal member, 36: weir 38: through hole, 42: rotating rod 50: potentiometer 56: float
Claims (1)
測定系に接続する入口が上部に開口した上流空間と、液
体の排出口が下部に開口した下流空間とに仕切り、仕切
筒の上部に入口と上流空間を連通する上部開口を、下部
に上流空間と下流空間を連通する下部開口を形成し、仕
切筒内に外部から回転操作可能に単一の堰筒を配置し、
堰筒の上部に上流空間と下流空間を連通する通孔と、そ
の下部に堰幅の異なる複数個の堰を横に並べて形成し、
堰筒と仕切筒の間にシール部材を配置し、排出口に液体
を自動的に排出するフロート弁を取り付け、上流空間の
液位を堰筒内に配置したフロート等の手段を用いて測定
する様にした液体用流量計。Claim: What is claimed is: 1. A vertical partitioning cylinder in the casing, which is partitioned into an upstream space in which an inlet connecting to the system to be measured is open at the top and a downstream space in which a liquid discharge port is open at the bottom. An upper opening that communicates the inlet and the upstream space is formed in the upper portion, a lower opening that communicates the upstream space and the downstream space is formed in the lower portion, and a single weir cylinder is rotatably operated from the outside in the partition cylinder.
A through hole that connects the upstream space and the downstream space is formed in the upper portion of the weir cylinder, and a plurality of weirs having different weir widths are formed side by side in the lower portion thereof,
A seal member is arranged between the weir cylinder and the partition cylinder, a float valve that automatically discharges liquid is attached to the discharge port, and the liquid level in the upstream space is measured using a means such as a float arranged in the weir cylinder. Flow meter for liquids.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1987092463U JPH0619052Y2 (en) | 1987-06-15 | 1987-06-15 | Liquid flow meter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1987092463U JPH0619052Y2 (en) | 1987-06-15 | 1987-06-15 | Liquid flow meter |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS63200727U JPS63200727U (en) | 1988-12-23 |
| JPH0619052Y2 true JPH0619052Y2 (en) | 1994-05-18 |
Family
ID=30954193
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1987092463U Expired - Lifetime JPH0619052Y2 (en) | 1987-06-15 | 1987-06-15 | Liquid flow meter |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0619052Y2 (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS541452B2 (en) * | 1973-03-19 | 1979-01-25 | ||
| JPS5961716A (en) * | 1982-10-01 | 1984-04-09 | Hitachi Ltd | Weir type flow rate measuring apparatus |
| JPS6145924A (en) * | 1984-08-09 | 1986-03-06 | Tlv Co Ltd | Flow meter for fluid |
| JPS6140622B2 (en) * | 1977-06-11 | 1986-09-10 | Kurosaki Refractories Co |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5738590Y2 (en) * | 1977-06-06 | 1982-08-25 | ||
| JPS6140622U (en) * | 1984-08-20 | 1986-03-14 | 株式会社明電舎 | Weir type flow measuring device |
-
1987
- 1987-06-15 JP JP1987092463U patent/JPH0619052Y2/en not_active Expired - Lifetime
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS541452B2 (en) * | 1973-03-19 | 1979-01-25 | ||
| JPS6140622B2 (en) * | 1977-06-11 | 1986-09-10 | Kurosaki Refractories Co | |
| JPS5961716A (en) * | 1982-10-01 | 1984-04-09 | Hitachi Ltd | Weir type flow rate measuring apparatus |
| JPS6145924A (en) * | 1984-08-09 | 1986-03-06 | Tlv Co Ltd | Flow meter for fluid |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS63200727U (en) | 1988-12-23 |
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