JP3249304B2 - Flow measurement device - Google Patents
Flow measurement deviceInfo
- Publication number
- JP3249304B2 JP3249304B2 JP22009394A JP22009394A JP3249304B2 JP 3249304 B2 JP3249304 B2 JP 3249304B2 JP 22009394 A JP22009394 A JP 22009394A JP 22009394 A JP22009394 A JP 22009394A JP 3249304 B2 JP3249304 B2 JP 3249304B2
- Authority
- JP
- Japan
- Prior art keywords
- flow
- flow rate
- fluid
- flow meter
- sewer
- 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 - Fee Related
Links
Landscapes
- Measuring Volume Flow (AREA)
Description
【0001】[0001]
【産業上の利用分野】本発明は、管渠や開渠を流れる下
水や雨水等の流体の流量を測定する流量測定装置に係
り、特に流体の流量を小流量から大流量まで高精度に測
定できるようにした流量測定装置に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a flow rate measuring device for measuring a flow rate of a fluid such as sewage or rainwater flowing in a sewer or open channel, and particularly to a high precision measurement of a fluid flow rate from a small flow rate to a large flow rate. The present invention relates to a flow measurement device that can be used.
【0002】[0002]
【従来の技術】従来から、管渠や開渠を流れる下水や雨
水等の流体の流量を測定する方式としては、例えば図1
0に示すように、パーマ・ボーラス・フリューム(以
下、PBFと称する)という流速計11とレベル計とを
併用した測定方式、あるいは図11(a),(b)に示
すように、超音波レベル計12と流速計11とを併用し
た測定方式が一般的である。なお、図11中、13は設
置ピット、14は管路を示している。2. Description of the Related Art Conventionally, as a method of measuring the flow rate of a fluid such as sewage or rainwater flowing through a sewer or open channel, for example, FIG.
0, as shown in FIG. 11 (a) and FIG. 11 (b), a measurement method using a flowmeter 11 and a level meter in combination called a perma bolus flume (hereinafter referred to as PBF). A measurement method using both the meter 12 and the flow meter 11 is common. In FIG. 11, 13 indicates an installation pit, and 14 indicates a pipeline.
【0003】ここで、PBFは、管渠や開渠に止水板を
設けて、下水や雨水等の流体をPBF本体に流し込む方
式であり、PBF本体は一種堰式流量計と同様な形状を
有しており、PBF本体の絞り部分を通過する際の流体
の流速とレベルを測定して、流量として測定する方式で
ある。[0003] Here, the PBF is a system in which a water stop plate is provided in a sewer or open channel, and a fluid such as sewage or rainwater flows into the PBF main body. The PBF main body has the same shape as a kind of weir type flow meter. In this method, the flow velocity and level of a fluid when passing through a throttle portion of the PBF main body are measured, and the flow rate is measured.
【0004】しかしながら、このような流速計11とレ
ベル計とを併用した測定方式では、流速および水位の測
定に使用しているセンサが超音波であり、この方式では
流体の流量を高精度に測定することは困難である。However, in such a measuring method using the current meter 11 and the level meter together, the sensor used for measuring the flow velocity and the water level is an ultrasonic wave. In this method, the flow rate of the fluid is measured with high accuracy. It is difficult to do.
【0005】また、超音波レベル計12と流速計11と
を併用した測定方式についても、流体の流量を高精度に
測定することは困難である。これらの困難な原因として
は、測定方式に超音波を利用しているため、流体のレベ
ルや流速を精度よく測定するには原理的に難しい面もあ
り、下水や雨水等の流体を精度よく測定することは無理
な状況にある。特に、下水や雨水には、浮遊物は流れる
し、気泡の混入はあるし、超音波を遮る条件が多いこと
による測定上の問題点と、本来の超音波としての測定面
での問題が加味され現状では、高精度で測定することに
は限度がある。[0005] Also, it is difficult to measure the flow rate of the fluid with high accuracy also in the measuring method using the ultrasonic level meter 12 and the flow meter 11 together. The reason for these difficulties is that ultrasonic waves are used in the measurement method, so there is a difficulty in measuring the fluid level and flow velocity with high accuracy in principle, and the measurement of fluids such as sewage and rainwater with high accuracy It is impossible to do it. In particular, suspended matter flows in sewage and rainwater, air bubbles are mixed in, and there are many problems in measurement due to many conditions that block ultrasonic waves, and problems in the measurement surface as original ultrasonic waves are taken into consideration. However, at present, there is a limit in measuring with high accuracy.
【0006】しかしながら、現状の下水や雨水の流量を
測定するには、ピット内の管渠や開渠に設置する必要が
あり、現状でのピットへの出入は、マンホールを利用す
るしか方法がなく、さらにマンホールは一般的に出入口
の径が600mmであり、一体構造である流量計では、
PBFと同様な口径の流量計を設置するには外形寸法が
大きいため、マンホールを通すことができないという問
題を抱えている。However, in order to measure the current flow rate of sewage and rainwater, it is necessary to install the pipe in a sewer or open channel in the pit. In addition, the diameter of the entrance and exit of a manhole is generally 600 mm, and in a flowmeter having an integral structure,
In order to install a flowmeter having the same diameter as that of the PBF, there is a problem that the manhole cannot be passed through because the external dimensions are large.
【0007】そこで、PBFは分解が可能であるため、
マンホール径600mmの出入口を通す時には細かく
し、マンホール通過後にピット内で組立てを行ない、マ
ンホールの径600mmよりも大きい管渠や開渠用のセ
ンサが設置可能であることの大きなメリットを有してい
る。[0007] Therefore, since PBF can be decomposed,
When passing through an entrance with a manhole diameter of 600 mm, it is made finer, and it is assembled in the pit after passing through the manhole, and there is a great merit that it is possible to install a sensor for a sewer or opening of a manhole larger than 600 mm in diameter of the manhole. .
【0008】このため、管渠や開渠を流れる下水や雨水
等の流体の流量を測定するには、管渠や開渠の途中に設
けてあるピットに測定用の流量計を取り付けて測定する
のが通例である。また、ピットへの出入りにはマンホー
ルを利用している。Therefore, in order to measure the flow rate of a fluid such as sewage or rainwater flowing through a sewer or open channel, a flow meter for measurement is attached to a pit provided in the middle of the sewer or open channel. It is customary. In addition, manholes are used to enter and exit the pit.
【0009】そこで、一般的には、マンホールの大きさ
は標準化されており、通常、穴計が600mmである。
また、特殊なものとして、径が900mmのものもあ
る。下水や雨水の流量を測定する一体形の流量計は、上
記マンホールから出入りできる大きさでないと取り付け
が困難である。ただし、新設の場合はこの限りではない
が、下水設備が普及している国内等では、新設でのピッ
トは数が限られる。マンホールから出入りできるため
に、従来まで使用できたPBF等は、上述したように流
量計を分解して、マンホールからピットに通した後に再
度組み立てている。Therefore, the size of the manhole is generally standardized, and the hole gauge is usually 600 mm.
Further, there is a special type having a diameter of 900 mm. It is difficult to install an integrated flow meter that measures the flow rate of sewage and rainwater unless it is large enough to enter and exit the manhole. However, this does not apply to new construction, but the number of newly constructed pits is limited in countries where sewage facilities are widespread. PBFs and the like that can be used up until now because they can enter and exit through the manhole are disassembled as described above and reassembled after passing through the pit from the manhole.
【0010】しかしながら、前述したように、流量測定
精度が悪く満足するものではない。また、最近、管渠や
開渠の下水や雨水の流体の流量を測定する電磁式流量計
が開発され始めてきているが、上記のようなマンホール
の大きさが問題として残っている。すなわち、それは、
管渠や開渠は幹線になると1000mmを超す大きさが
主流であるため、電磁式流量計はその管渠や開渠の大き
さに合わせたサイズのものを製作しても、マンホールか
ら入らないのが大きな問題である。特に、一体形流量計
は電磁式を利用した流量計であり、測定管内を絶縁材等
で円筒状に形成して、流量を導き測定するのが一般的で
あるが、解体できない製品である。一方、測定精度は、
上記PBFに比較しても数段よいことは判っているが、
上記問題により苦慮している。However, as described above, the flow rate measurement accuracy is poor and unsatisfactory. In recent years, electromagnetic flowmeters for measuring the flow rate of sewers and rainwater in sewers and open drains have begun to be developed, but the size of the manhole as described above remains a problem. That is,
The mainstream of sewers and open drains is over 1000 mm on the main line, so even if an electromagnetic flow meter is manufactured in a size that matches the size of the sewer or open drain, it will not enter through manholes. Is a big problem. In particular, the integral type flow meter is a flow meter using an electromagnetic method, and it is common to form the inside of a measuring pipe in a cylindrical shape with an insulating material or the like and to guide and measure the flow rate, but it is a product that cannot be disassembled. On the other hand, the measurement accuracy is
We know that it is several steps better than the above PBF,
I am struggling with the above problem.
【0011】そこで、これらの問題を解決するために、
マンホールから出入りできるサイズの電磁式流量計を、
管渠や開渠に止水板と共に取り付けることが考えられ
る。しかしながら、下水や雨水の流量によっては、マン
ホールを通過するだけの大きさの流量計では、フルスケ
ール値が小さいために、流量フルスケールがオーバーし
てしまうことになり、実用的には問題が残る。その結
果、下水や雨水等の流体の流量を、小流量から大流量ま
で測定することが困難である。Therefore, in order to solve these problems,
An electromagnetic flowmeter of a size that can enter and exit the manhole,
It is conceivable to attach it to a sewer or open channel together with a waterproof plate. However, depending on the flow rate of sewage and rainwater, a flowmeter large enough to pass through a manhole will have a small full scale value, so that the flow rate will exceed the full scale, leaving a practical problem. . As a result, it is difficult to measure the flow rate of a fluid such as sewage or rainwater from a small flow rate to a large flow rate.
【0012】[0012]
【発明が解決しようとする課題】以上のように、従来の
流量測定方式においては、管渠や開渠を流れる下水や雨
水等の流体の流量を、小流量から大流量まで高い精度で
測定することが困難であるという問題があった。As described above, in the conventional flow rate measuring method, the flow rate of a fluid such as sewage or rainwater flowing through a sewer or open channel is measured with high accuracy from a small flow rate to a large flow rate. There was a problem that it was difficult.
【0013】本発明の目的は、管渠や開渠を流れる下水
や雨水等の流体の流量を小流量から大流量まで高精度に
測定することが可能な極めて信頼性の高い流量測定装置
を提供することにある。An object of the present invention is to provide an extremely reliable flow rate measuring device capable of measuring the flow rate of a fluid such as sewage or rainwater flowing through a sewer or open channel from a small flow rate to a large flow rate with high accuracy. Is to do.
【0014】[0014]
【発明が解決しようとする課題】以上のように、従来の
流量測定方式においては、管渠や開渠を流れる下水や雨
水等の流体の流量を、小流量から大流量まで高い精度で
測定することが困難であるという問題があった。As described above, in the conventional flow rate measuring method, the flow rate of a fluid such as sewage or rainwater flowing through a sewer or open channel is measured with high accuracy from a small flow rate to a large flow rate. There was a problem that it was difficult.
【0015】本発明の目的は、管渠や開渠を流れる下水
や雨水等の流体の流量を小流量から大流量まで高精度に
測定することが可能な極めて信頼性の高い流量測定装置
を提供することにある。An object of the present invention is to provide an extremely reliable flow rate measuring apparatus capable of measuring the flow rate of a fluid such as sewage or rainwater flowing in a sewer or open channel from a small flow rate to a large flow rate with high accuracy. Is to do.
【0016】[0016]
【課題を解決するための手段】上記の目的を達成するた
めに、管渠や開渠を流れる下水や雨水等の流体の流量を
測定する流量測定装置において、まず、請求項1に対応
する発明では、管渠や開渠に、当該管渠や開渠の形状に
見合った外形形状を有する止水板を設け、この止水板
に、流体を導入しかつ流量計が取り付け可能な穴部を鉛
直方向に複数箇所設け、各々の穴部に流量計をそれぞれ
取り付けて、当該各々の流量計内へ流体を導入するよう
にしている。In order to achieve the above object, a flow rate measuring apparatus for measuring a flow rate of a fluid such as sewage or rainwater flowing through a sewer or open channel is firstly described. In the sewer or open channel, a water stop plate having an outer shape matching the shape of the sewer or open line is provided, and a hole through which fluid can be introduced and a flow meter can be attached is provided in the water stop plate. A plurality of flow meters are provided in the vertical direction, and a flow meter is attached to each of the holes to introduce a fluid into each of the flow meters.
【0017】また、請求項2に対応する発明では、特に
上記各々の穴部の高さを相互に交錯させるようにしてい
る。Further, in the invention corresponding to claim 2, the heights of the respective holes are intersected with each other.
【0018】[0018]
【0019】また、請求項3に対応する発明では、管渠
や開渠に、管渠や開渠の形状に見合った外形形状を有す
る止水板を設け、止水板に、流体を導入しかつ流量計が
取り付け可能な流量計用穴部を鉛直方向に複数箇所設
け、止水板に、流量計用穴部の内径と略同一の内径を有
する穴部を各々の流量計用穴部から水平方向に外れた位
置に設け、各々の流量計用穴部に流量計をそれぞれ取り
付けて、各々の流量計内へ流体を導入するようにしてい
る。In the invention corresponding to claim 3, a water stop plate having an outer shape corresponding to the shape of the sewer or open drain is provided in the sewer or open drain, and fluid is introduced into the water stop plate. In addition, a plurality of flow meter holes to which a flow meter can be attached are provided in a plurality of positions in the vertical direction, and a hole having substantially the same inner diameter as the inner diameter of the flow meter hole is formed in each of the water blocking plates from each flow meter hole. It is provided at a position deviated in the horizontal direction, a flow meter is attached to each flow meter hole, and a fluid is introduced into each flow meter.
【0020】ここで、請求項4に対応する発明では、請
求項3に対応する止水板における同一の高さに設けられ
た流量計及び穴部毎に、流量計による指示値と穴部の個
数に流量計用穴部の個数を加えた値とを乗じて当該高さ
における流量値を算出し、且つこれら同一の高さ毎に算
出した流量値を互いに加算したものが実流量となるよう
に流量を演算して出力する1台の変換器を付加してい
る。Here, in the invention according to claim 4, for each of the flow meter and the hole provided at the same height in the water blocking plate according to claim 3, the value indicated by the flow meter and the value of the hole are determined. The actual flow rate is obtained by calculating the flow rate value at the height by multiplying the number by the value obtained by adding the number of the flow meter holes, and adding the flow rate values calculated for each of the same heights to each other. And one converter that calculates and outputs the flow rate.
【0021】また、請求項5に対応する発明は、請求項
1乃至4のうちのいずれか1項に対応する止水板に流体
排出穴を設け、流量計の静水ゼロ調整用の蓋部材を流体
排出穴に流量計の蓋部材を着脱自在に取付けている。According to a fifth aspect of the present invention, there is provided a water blocking plate corresponding to any one of the first to fourth aspects, wherein a fluid discharge hole is provided, and a lid member for zero adjustment of static water of the flow meter is provided. The lid member of the flow meter is detachably attached to the fluid discharge hole.
【0022】[0022]
【作用】従って、まず、請求項1に対応する発明の流量
測定装置においては、管渠や開渠に止水板を設け、この
止水板に穴部を鉛直方向に複数箇所設け、これらの穴部
に流量計を取り付けて、下水や雨水等の流体を流量計の
内部へ導くようにすることにより、流体の流量が少ない
場合、すなわち止水板に設けられた下方の穴部にしか流
体が流れない場合には、下方の流量計の指示のみがその
まま出力され、また流体の流量が増加した場合、すなわ
ち止水板に設けられた下方および上方の穴部に流体が流
れた場合には、下方の流量計の指示と上方の流量計の指
示とを加算したものが実流量となるように演算出力され
て、流体の流量を小流量から大流量まで高い精度で測定
することができる。Therefore, first, in the flow rate measuring apparatus according to the first aspect of the present invention, a water stop plate is provided in a sewer or open channel, and a plurality of holes are provided in the water stop plate in a vertical direction. By attaching a flow meter to the hole to guide fluid such as sewage and rainwater to the inside of the flow meter, the fluid flow is limited only when the flow rate of the fluid is low, that is, only in the lower hole provided in the water stop plate. Does not flow, only the indication of the lower flow meter is output as it is, and when the flow rate of the fluid increases, that is, when the fluid flows through the lower and upper holes provided in the water stoppage plate The sum of the lower flow meter indication and the upper flow meter indication is calculated and output so as to be the actual flow rate, and the flow rate of the fluid can be measured with high accuracy from a small flow rate to a large flow rate.
【0023】また、ここで、請求項2に対応する発明の
流量測定装置のように、各々の穴部の高さを相互に交錯
させるようにすることにより、流体の流量を小流量から
大流量まで連続的に測定することができる。Further, the flow rate of the fluid can be changed from a small flow rate to a large flow rate by intersecting the heights of the holes with each other as in the flow rate measuring device according to the second aspect of the present invention. Can be measured continuously.
【0024】また、請求項3及び請求項4に対応する発
明の流量測定装置においては、管渠や開渠に、管渠や開
渠の形状に見合った外形形状を有する止水板を設け、止
水板に、流体を導入しかつ流量計が取り付け可能な流量
計用穴部を鉛直方向に複数箇所設け、止水板に、流量計
用穴部の内径と略同一の内径を有する穴部を各々の流量
計用穴部から水平方向に外れた位置に設け、各々の流量
計用穴部に流量計をそれぞれ取り付けて、各々の流量計
内へ流体を導入するようにすることにより、流体の流量
が少ない場合、すなわち止水板に設けられた下方の穴部
にしか流体が流れない場合には、下方の流量計の指示の
みがそのまま出力され、また流体の流量が増加した場
合、すなわち止水板に設けられた下方および上方の穴部
に流体が流れた場合には、上方及び下方で同一の高さに
設けられた流量計及び穴部毎に、流量計による指示値と
穴部の個数に流量計用穴部の個数を加えた値とを乗じて
当該上方及び下方における流量値を算出し、且つこれら
同一の高さ毎に算出した流量値を互いに加算したものが
実流量となるように演算出力されて、流体の流量を小流
量から大流量まで高い精度で測定することができ、且つ
鉛直方向に沿って1つずつ流量計を設けるだけで流量測
定を実行することができるので、構成の簡易化を図るこ
とができる。According to a third aspect of the present invention, there is provided a flow rate measuring device, wherein a water stop plate having an outer shape conforming to the shape of the sewer or open channel is provided on the sewer or open channel. In the water stop plate, a plurality of flow meter holes into which a fluid can be introduced and a flow meter can be attached are provided in the vertical direction, and the water stop plate has a hole having an inner diameter substantially equal to the inner diameter of the flow meter hole. Is provided at a position horizontally displaced from each flow meter hole, a flow meter is attached to each flow meter hole, and a fluid is introduced into each flow meter. When the flow rate is small, that is, when the fluid flows only through the lower hole provided in the water stop plate, only the indication of the lower flow meter is output as it is, and when the flow rate of the fluid increases, When fluid flows into the lower and upper holes provided in the water stoppage plate For each of the flowmeters and holes provided at the same height above and below, multiply the indicated value by the flowmeter and the value obtained by adding the number of holes for the flowmeter to the number of holes for the flowmeter. And the flow rate value at the lower side is calculated, and the sum of the flow rate values calculated for each of the same heights is calculated and output so that the actual flow rate is obtained. And the flow rate can be measured only by providing flow meters one by one along the vertical direction, so that the configuration can be simplified.
【0025】また、請求項5に対応する発明は、請求項
1乃至4のうちのいずれか1項に対応する止水板に流体
排出穴を設け、流量計の静水ゼロ調整用の蓋部材を該流
体排出穴に着脱自在に取付けているので、請求項1乃至
4のうちの対応する請求項で奏される作用に加え、静水
ゼロ調整の際に、この蓋部材を流体排出穴から取外して
流量計に取付けることにより、流量計に蓋をしても流体
排出穴から流体が流れるようにしたので、流体の流れを
止めず、水位の増加によるオーバーフローを阻止し、静
水ゼロ調整時の安全性を確保することができる。According to a fifth aspect of the present invention, there is provided a water stop plate according to any one of the first to fourth aspects, wherein a fluid discharge hole is provided, and a lid member for zero adjustment of static water of the flow meter is provided. Since it is detachably attached to the fluid discharge hole, in addition to the effects achieved in the corresponding claims of claims 1 to 4, the lid member is removed from the fluid discharge hole at the time of zero water adjustment. By attaching to the flow meter, even if the flow meter is covered, the fluid flows from the fluid discharge hole, so it does not stop the flow of the fluid, prevents overflow due to an increase in water level, and provides safety during zero water adjustment. Can be secured.
【0026】[0026]
【実施例】本発明では、例えば管渠や開渠の形状に見合
った外形形状を有する止水板に、既設マンホールを通過
できる大きさの流量計用の穴部を、鉛直方向に最大流量
値に見合った数(複数個)だけ設け、その穴部に流量計
をそれぞれ取り付けて、各々の流量計の内部に下水や雨
水等の流体を導入するものである。DESCRIPTION OF THE PREFERRED EMBODIMENTS In the present invention, for example, a hole for a flow meter large enough to pass through an existing manhole is formed in a water stop plate having an outer shape corresponding to the shape of a sewer or open channel, and the maximum flow rate value in the vertical direction. And a flow meter is attached to each of the holes, and a fluid such as sewage or rainwater is introduced into each flow meter.
【0027】ここで、穴部は、管渠や開渠を流れる下水
や雨水等の流体の最大流量に合わせた数であるため、同
一サイズの流量計を取り付けることにより、前述の問題
を解決できることになる。Here, since the number of holes is adjusted to the maximum flow rate of fluid such as sewage or rainwater flowing through a sewer or open channel, the above-mentioned problem can be solved by installing a flow meter of the same size. become.
【0028】さらに、止水板には、流量計を取り付ける
ための穴部を鉛直方向に設けることにより、下水や雨水
等の流体の流量が少ない場合には、下部の流量計のみで
流量を測定し、流体の流量が増加した場合には、下部の
穴部は流体で満水状態になって、上部の穴部にも流れる
ことになり、下部および上部の各々の流量計の指示を加
算して流量を測定し、流体の流量を小流量から大流量ま
で高い精度でかつ連続的に測定できることになる。Further, the water stop plate is provided with a hole for mounting a flow meter in a vertical direction, so that when the flow rate of a fluid such as sewage or rainwater is small, the flow rate is measured only by the lower flow meter. However, when the flow rate of the fluid increases, the lower hole is filled with the fluid and also flows to the upper hole, and the instructions of the lower and upper flow meters are added. By measuring the flow rate, the flow rate of the fluid can be continuously measured with high accuracy from a small flow rate to a large flow rate.
【0029】以下、上記のような考え方に基づく本発明
の実施例について、図面を参照して詳細に説明する。図
1は、本発明の第1の実施例に係る流量測定装置の構成
を示す斜視図である。Hereinafter, embodiments of the present invention based on the above-described concept will be described in detail with reference to the drawings. FIG. 1 is a perspective view showing a configuration of a flow measuring device according to a first embodiment of the present invention.
【0030】すなわち、本実施例の流量測定装置は、図
1に示すように、管渠1や開渠2に、この管渠1や開渠
2の形状に見合った外形形状を有する止水板3を設け、
またこの止水板3に、管渠1や開渠2を流れる下水や雨
水等の流体を導入しかつ流量計が取り付け可能な穴部を
鉛直方向に複数箇所(本例では5箇所)設け、さらにこ
れら各々の穴部に、既設マンホールを通過させることが
可能な小口径の高精度の一体形電磁式流量計4a〜4e
をそれぞれ取り付けて、この各々の一体形電磁式流量計
4a〜4e内へ流体を導入するようにしている。That is, as shown in FIG. 1, the flow rate measuring device according to the present embodiment has a water stop plate having an outer shape conforming to the shape of the sewer 1 or the open sewer 2 on the sewer 1 or the open sewer 2. 3 and
A plurality of holes (5 in this example) are provided in the water stop plate 3 in a vertical direction for introducing a fluid such as sewage or rainwater flowing through the sewer 1 or the open culvert 2 and for mounting a flow meter. Furthermore, a small-diameter, high-precision integrated electromagnetic flow meter 4a to 4e capable of passing an existing manhole into each of these holes.
Are respectively attached so as to introduce a fluid into each of the integrated electromagnetic flow meters 4a to 4e.
【0031】また、各々の一体形電磁式流量計4a〜4
eの指示を加算したものが実流量となるように流量を演
算して出力する図示しない1台の変換器を備えている。
さらに、上記各々の穴部の高さは、相互に交錯させるよ
うにしている。Each of the integral electromagnetic flow meters 4a to 4
One converter (not shown) for calculating and outputting the flow rate so that the value obtained by adding the instruction of e is the actual flow rate is provided.
Further, the heights of the above-mentioned holes are made to intersect with each other.
【0032】次に、以上のように構成した本実施例の流
量測定装置の作用について説明する。図1において、管
渠1や開渠2を流れる下水や雨水等の流体の流量が少な
い場合、すなわち止水板3に設けられた下方の穴部にし
か流体が流れない場合には、下方の一体形電磁式流量計
4aの指示のみが、図示しない変換器により実流量とし
て演算出力される。Next, the operation of the flow rate measuring device of the present embodiment configured as described above will be described. In FIG. 1, when the flow rate of the fluid such as sewage or rainwater flowing through the sewer 1 or the open culvert 2 is small, that is, when the fluid flows only through the lower hole provided in the water stop plate 3, Only the indication of the integrated electromagnetic flow meter 4a is calculated and output as the actual flow rate by a converter (not shown).
【0033】また、管渠1や開渠2を流れる下水や雨水
等の流体の流量が増加した場合、すなわち止水板3に設
けられた下方および上方の穴部に流体が流れた場合に
は、下方の一体形電磁式流量計4aの指示と上方の一体
形電磁式流量計4b〜4eの指示とを加算したものが、
図示しない変換器により実流量となるように演算出力さ
れる。When the flow rate of the fluid such as sewage or rainwater flowing through the sewer 1 or the open channel 2 increases, that is, when the fluid flows into the lower and upper holes provided in the water stop plate 3. , The sum of the indication of the lower integrated electromagnetic flow meter 4a and the indication of the upper integrated electromagnetic flow meter 4b to 4e,
The output is calculated by a converter (not shown) so that the actual flow rate is obtained.
【0034】これにより、流体の流量を小流量から大流
量まで高い精度で測定することができる。また、この場
合、各々の穴部の高さを相互に交錯させるようにしてい
ることにより、流体の流量を小流量から大流量まで連続
的に測定することができる。Accordingly, the flow rate of the fluid can be measured from a small flow rate to a large flow rate with high accuracy. In this case, since the heights of the holes are intersected with each other, the flow rate of the fluid can be continuously measured from a small flow rate to a large flow rate.
【0035】なお、一体形電磁式流量計4aとしては、
流体が下方の穴部の一部にしか流れなくても測定できる
流量計を設置しており、かつ下方の穴部全体に流体が流
れても測定できるものであることが必要である。そこ
で、流量が下方から上方の穴部へ係るような流量の場合
には、上方の一体形電磁式流量計4b〜4eが流量信号
を出力した時点で、双方の流量計4a,4b〜4eの指
示を加算するようになっている。The integrated electromagnetic flow meter 4a includes:
It is necessary to provide a flow meter capable of measuring even if the fluid flows only in a part of the lower hole, and to be able to measure even if the fluid flows through the entire lower hole. Therefore, when the flow rate is such that the flow rate is from the lower side to the upper hole, when the upper integrated electromagnetic flow meters 4b to 4e output the flow rate signals, the flow rates of the two flow meters 4a, 4b to 4e are reduced. Instructions are added.
【0036】上述したように、本実施例の流量測定装置
は、管渠1や開渠2に、この管渠1や開渠2の形状に見
合った外形形状を有する止水板3を設け、この止水板3
に、管渠1や開渠2を流れる下水や雨水等の流体を導入
しかつ流量計が取り付け可能な穴部を鉛直方向に5箇所
設け、これら各々の穴部に、既設マンホールを通過させ
ることが可能な小口径の高精度の一体形電磁式流量計4
a〜4eをそれぞれ取り付けて、この各々の一体形電磁
式流量計4内へ流体を導入するようにし、さらに各々の
一体形電磁式流量計4a〜4eの指示を加算したものが
実流量となるように流量を演算して出力する1台の変換
器を備えると共に、上記各々の穴部の高さを相互に交錯
させるようにしたものである。As described above, in the flow rate measuring device of the present embodiment, a water stop plate 3 having an outer shape matching the shape of the sewer 1 or the open sewer 2 is provided on the sewer 1 or the open sewer 2. This water stop plate 3
In addition, five fluid holes such as sewage and rainwater that flow through the sewer 1 and the open sewer 2 are installed in the vertical direction, and five flow holes can be attached to the flow meter, and the existing manholes are passed through these holes. Small-diameter, high-precision integrated electromagnetic flowmeter 4
a to 4e are respectively attached, and the fluid is introduced into each of the integrated electromagnetic flow meters 4, and the sum of the indications of the integrated electromagnetic flow meters 4a to 4e is the actual flow rate. Thus, a single converter for calculating and outputting the flow rate is provided, and the heights of the respective holes are interlaced with each other.
【0037】従って、管渠1や開渠2を流れる下水や雨
水等の流体の流量が小流量の時には、下部の穴部に流れ
る流量値を下部の穴部に取り付けた一体形電磁式流量計
4aのみで測定し、流量が大流量の時には、下部と上部
の穴部に取り付けた各々の一体形電磁式流量計4a〜4
eを併用して測定し、流体の流量を高精度に測定するこ
とが可能となる。Accordingly, when the flow rate of the fluid such as sewage or rainwater flowing through the sewer 1 or the open culvert 2 is a small flow rate, the integrated electromagnetic flow meter having the flow value flowing through the lower hole portion attached to the lower hole portion. 4a only, and when the flow rate is a large flow rate, each of the integrated electromagnetic flowmeters 4a to 4 attached to the lower and upper holes, respectively.
It is possible to measure the flow rate of the fluid with high accuracy by performing measurement together with e.
【0038】また、各々の穴部の高さを相互に交錯させ
るようにしているため、流体の流量を小流量から大流量
まで連続的に測定することが可能となる。さらに、流量
計としては、既設マンホールを通過させることが可能な
小口径の高精度の一体形電磁式流量計4a〜4eを用い
ているため、管渠1や開渠2を流れる下水や雨水等の流
体の流量を測定する際に、管渠1や開渠2の途中に設け
てあるピットを通して測定用の流量計4a〜4eを取り
付けて測定するのが極めて容易となる。Further, since the heights of the holes are intersected with each other, the flow rate of the fluid can be continuously measured from a small flow rate to a large flow rate. Furthermore, since a small-diameter, high-precision integrated electromagnetic flow meter 4a to 4e capable of passing through an existing manhole is used as the flow meter, sewage, rainwater, etc. flowing through the sewer 1 and the open sewer 2 are used. When the flow rate of the fluid is measured, it is extremely easy to mount and measure the flow meters 4a to 4e for measurement through pits provided in the pipe 1 and the open channel 2.
【0039】尚、本発明は上記実施例に限定されるもの
ではなく、次のようにしても同様に実施できるものであ
る。 (a)本発明において、止水板3に設ける穴部箇所の数
については、管渠1や開渠2の大きさにもよるが、流量
計は同一形状寸法の製品を使用するため、流量の大小に
応じて、例えば図2に示すように、止水板3に2箇所の
穴部3aを設けたり、あるいは図3に示すように、止水
板3に3箇所以上の穴部(図3では6箇所)3bを設け
て、各々の穴部に流量計を取り付けて下水や雨水等の流
体を流量計の内部へ導入するようにすることも可能であ
る。It should be noted that the present invention is not limited to the above-described embodiment, but can be similarly implemented in the following manner. (A) In the present invention, the number of holes provided in the water stoppage plate 3 depends on the size of the sewer 1 and the open channel 2. For example, as shown in FIG. 2, two holes 3a are provided in the water stop plate 3 or three or more holes (see FIG. 3) are provided in the water stop plate 3 as shown in FIG. It is also possible to provide a flow meter in each hole to introduce a fluid such as sewage or rainwater into the inside of the flow meter.
【0040】なお、この場合にも、各々の穴部の高さ
は、相互に交錯していること(図2および図3中、ΔL
は交錯部をそれぞれ示している)が好ましく、これによ
り前述の場合と同様にして、少流量から大流量までの流
量を連続的に測定することが可能である。Also in this case, the heights of the holes are mutually intersected (ΔL in FIGS. 2 and 3).
Preferably represent intersecting portions), whereby the flow rate from a small flow rate to a large flow rate can be continuously measured in the same manner as described above.
【0041】(b)上記実施例では、管渠1や開渠2
に、この管渠1や開渠2の形状に見合った外形形状を有
する止水板3を設け、この止水板3に、管渠1や開渠2
を流れる下水や雨水等の流体を導入しかつ流量計が取り
付け可能な穴部を鉛直方向に複数箇所設け、これら各々
の穴部に、一体形電磁式流量計4a〜4eをそれぞれ取
り付けて、この各々の一体形電磁式流量計4a〜4e内
へ流体を導入する構成とする場合について説明したが、
何らこれに限られるものではない。(B) In the above embodiment, the sewer 1 and the open sewer 2
In addition, a water stop plate 3 having an outer shape corresponding to the shape of the sewer 1 or the open ditch 2 is provided.
A plurality of holes for introducing a fluid such as sewage or rainwater flowing through the hole and to which a flow meter can be attached are provided in the vertical direction, and integrated electromagnetic flow meters 4a to 4e are respectively attached to these holes, and Although the case where the fluid is introduced into each of the integrated electromagnetic flow meters 4a to 4e has been described,
It is not limited to this.
【0042】すなわち、流量計の外形形状を利用して、
流体を流量計内へ導入するようにしてもよい。この場合
の例としては、例えば図4に示すように、管渠1や開渠
2に、この管渠1や開渠2の形状に見合った外形形状を
有する1台の流量計5を取り付けて、この流量計5内へ
流体を導入するもの(図4中、6は流量計5の内径部を
示している)や、あるいは例えば図5に示すように、管
渠1や開渠2の形状7に見合うように、複数台(図5で
は2台)の流量計5により構成して、この各々の流量計
5内へ流体を導入するもの(図5中、6は流量計5の内
径部を示している)が考えられる。That is, utilizing the external shape of the flow meter,
The fluid may be introduced into the flow meter. In this case, for example, as shown in FIG. 4, one flow meter 5 having an outer shape corresponding to the shape of the sewer 1 or the open sewer 2 is attached to the sewer 1 or the open sewer 2. A fluid is introduced into the flow meter 5 (in FIG. 4, reference numeral 6 denotes an inner diameter portion of the flow meter 5) or, for example, as shown in FIG. 7, a plurality of (two in FIG. 5) flow meters 5 are configured to introduce a fluid into each of the flow meters 5 (in FIG. 5, reference numeral 6 denotes an inner diameter portion of the flow meter 5). Is shown).
【0043】なお、この場合にも、前述の場合と同様
に、各々の流量計5に対して共通の1台の変換器を備
え、各々の流量計5の指示を加算したものが実流量とな
るように流量を演算して出力するようにすることが好ま
しい。In this case, as in the case described above, one converter common to each flow meter 5 is provided, and the sum of the indications of each flow meter 5 is the actual flow rate. It is preferable to calculate the flow rate and output the calculated flow rate.
【0044】(c)上記実施例では、流量計として電磁
式流量計を取り付ける場合について説明したが、流量計
としてその他の方式の流量計を取り付けるようにしても
よい。(C) In the above embodiment, the case where the electromagnetic flow meter is mounted as the flow meter has been described. However, another type of flow meter may be mounted as the flow meter.
【0045】次に、本発明の第2の実施例に係る流量測
定装置について説明する。図6はこの流量測定装置の部
分構成図であり、図1と同一部分には同一符号を付して
その詳しい説明は省略し、ここでは異なる部分について
のみ述べる。Next, a flow rate measuring device according to a second embodiment of the present invention will be described. FIG. 6 is a partial configuration diagram of this flow rate measuring device. The same portions as those in FIG. 1 are denoted by the same reference numerals, detailed description thereof will be omitted, and only different portions will be described here.
【0046】すなわち、本実施例装置は、図1に示す装
置に比べて電磁式流量計の個数を減らして構成の簡易化
を図るものであり、具体的には図1に示す装置に対し、
止水板3内で同一の高さ毎に1個の電磁式流量計4a〜
4cを残して他を省略し、且つ該省略する電磁式流量計
4d,4eに代えて短管8を穴部に取付けた構成となっ
ている。なお、この短管8としては、流体の流れ易さを
電磁式流量計とほぼ等しくするように、電磁式流量計と
ほぼ同一の内径及び長さを有するものが好ましい。That is, the apparatus of this embodiment is intended to simplify the configuration by reducing the number of electromagnetic flowmeters as compared with the apparatus shown in FIG. 1. Specifically, the apparatus shown in FIG.
One electromagnetic flow meter 4a to 4 at the same height in the water stop plate 3.
Other components are omitted except for 4c, and a short pipe 8 is attached to the hole instead of the omitted electromagnetic flow meters 4d and 4e. The short pipe 8 preferably has an inner diameter and a length that are substantially the same as those of the electromagnetic flow meter so that the flow of the fluid is almost equal to that of the electromagnetic flow meter.
【0047】また、図示しない変換器は、第1の実施例
とは異なり、止水板3において同一の高さに設けられた
電磁式流量計及び短管毎に、当該電磁式流量計による指
示値と、当該短管8の個数に1(=電磁式流量計の個
数)を加えて得た穴部の個数とを乗じて当該高さにおけ
る流量値を算出すると共に、これら同一の高さ毎に算出
した流量値を互いに加算し、該加算結果としての全流量
値を出力する機能をもっている。The converter (not shown) is different from the first embodiment in that the electromagnetic flow meter and the short pipe provided at the same height on the water stop plate 3 are indicated by the electromagnetic flow meter. The value is multiplied by the number of holes obtained by adding 1 (= the number of electromagnetic flow meters) to the number of the short pipes 8 to calculate the flow value at the height, and for each of these same heights Have the function of adding the calculated flow values to each other and outputting the total flow value as a result of the addition.
【0048】ここで、例えば水位が高く、流量が全ての
電磁式流量計4a〜4cに測定される場合を説明する。
各電磁式流量計4a〜4cは夫々指示値を変換器に送出
する。変換器は、次の(1)式に示すように、止水板内
で同一の高さに設けられた電磁式流量計及びN個の短管
8毎に流量値を算出する。Here, a case where the water level is high and the flow rate is measured by all the electromagnetic flow meters 4a to 4c will be described.
Each of the electromagnetic flow meters 4a to 4c sends an indicated value to the converter. As shown in the following equation (1), the converter calculates the flow rate value for each of the electromagnetic flowmeters and the N short pipes 8 provided at the same height in the water blocking plate.
【0049】 同一の高さ毎の流量値=電磁式流量計の指示値×(短管の個数N+1) …(1) すなわち、変換器は止水板3内の高さを下部、中部及び
上部の3つで示したとき、次の(2)式〜(4)式に示
すように夫々流量値を算出する。The flow rate value at each height is equal to the indicated value of the electromagnetic flow meter × (the number of short pipes N + 1) (1) That is, the converter sets the height in the water stop plate 3 to lower, middle and upper parts. , The flow rate values are calculated as shown in the following equations (2) to (4).
【0050】 下部の流量値F1=電磁式流量計4aの指示値×1 …(2) 中部の流量値F2=電磁式流量計4bの指示値×2 …(3) 上部の流量値F3=電磁式流量値4cの指示値×2 …(4) 続いて、変換器は、これら流量値F1〜F3を次の
(5)式に示すように互いに加算して全流量値Fo を算
出し、この全流量値Fo を出力する。Lower flow value F1 = Indicated value of electromagnetic flow meter 4a × 1 (2) Middle flow value F2 = Indicated value of electromagnetic flow meter 4b × 2 (3) Upper flow value F3 = Electromagnetic Expression value of formula flow value 4c × 2 (4) Subsequently, the converter calculates the total flow value Fo by adding these flow values F1 to F3 to each other as shown in the following formula (5). The total flow value Fo is output.
【0051】 全流量値Fo =各々の高さ毎の流量値の総和 =F1+F2+F3 …(5) 上述したように第2の実施例によれば、図1に示す装置
に対し、止水板3内で同一の高さ毎に1個の電磁式流量
計4a〜4cを残して他を省略し、且つ該省略する電磁
式流量計4d,4eに代えて短管8を穴部に取付けてい
るので、鉛直方向に沿って1つずつ流量計を設けるだけ
で流量測定を実行することができ、第1の実施例の効果
に加え、構成の簡易化を図ることができる。Total flow value Fo = sum of flow values for each height = F1 + F2 + F3 (5) As described above, according to the second embodiment, the inside of the water stop plate 3 is different from the device shown in FIG. Since one electromagnetic flow meter 4a to 4c is omitted for each of the same heights and the others are omitted, and the short pipe 8 is attached to the hole instead of the omitted electromagnetic flow meters 4d and 4e. The flow measurement can be executed only by providing flow meters one by one along the vertical direction, and the configuration can be simplified in addition to the effects of the first embodiment.
【0052】また、第2の実施例によれば、変換器が、
同一の高さ毎に電磁式流量計の指示値を(短管の個数+
1)倍して当該高さにおける正確な流量値を求めている
ので、構成を簡易化したときの測定の正確性を確保する
ことができる。Further, according to the second embodiment, the converter comprises:
Change the indicated value of the electromagnetic flow meter to the same height (the number of short pipes +
1) Since an accurate flow value at the height is obtained by multiplying, the accuracy of the measurement when the configuration is simplified can be ensured.
【0053】なお、上記第2の実施例では、止水板3の
高さ方向を上部、中部及び下部の3段階に区分したが、
これに限らず、止水板3の高さ方向を任意の数の段階に
区分して電磁式流量計及び短管を設けた構成としても、
本発明を同様に実施して同様の効果を得ることができ
る。In the second embodiment, the height direction of the water stoppage plate 3 is divided into three stages: upper, middle and lower.
Not limited to this, even if the height direction of the water stop plate 3 is divided into an arbitrary number of stages and an electromagnetic flow meter and a short pipe are provided,
The present invention can be implemented in a similar manner to obtain similar effects.
【0054】また、上記第2の実施例では、止水板3内
の上部及び中部に夫々短管8を1つずつ設けた場合を説
明したが、これに限らず、止水板3内の上部及び中部の
うちの少なくとも一方に複数の短管を設けた構成として
も、本発明を同様に実施して同様の効果を得ることがで
きる。Further, in the second embodiment, the case where one short pipe 8 is provided in each of the upper part and the middle part in the water stop plate 3 has been described. However, the present invention is not limited to this. Even in a configuration in which a plurality of short tubes are provided in at least one of the upper portion and the middle portion, the present invention can be implemented in the same manner and the same effect can be obtained.
【0055】さらに、上記第2の実施例では、電磁式流
量計とほぼ等しい流体の流れ易さをもつ短管8を設けた
場合について説明したが、これに限らず、短管8を省略
して穴部だけとし、且つ変換器が電磁式流量計と穴部と
における流体の流れ易さの違いを考慮した演算を実行す
る構成としても、本発明を同様に実施して同様の効果を
得ることができる。この種の演算としては、例えば電磁
式流量計における流れ易さと穴部における流れ易さとの
比をn:mとしたとき、(1)式に代えて次の(6)式
を用いて実行することができる。Further, in the second embodiment, the case where the short pipe 8 having the same ease of fluid flow as the electromagnetic flow meter is provided has been described. However, the present invention is not limited to this, and the short pipe 8 is omitted. The present invention can be implemented in the same manner and the same effect can be obtained even if the configuration is such that only the holes are used, and the converter executes the calculation in consideration of the difference in the ease of fluid flow between the electromagnetic flow meter and the holes. be able to. This type of calculation is executed using the following expression (6) instead of expression (1), for example, when the ratio of the ease of flow in the electromagnetic flow meter to the ease of flow in the hole is n: m. be able to.
【0056】 同一の高さ毎の流量値=電磁式流量計の指示値×(穴部の個数N・m+n) …(6) 次に、本発明の第3の実施例に係る流量測定装置につい
て説明する。The flow value at the same height = indicated value of electromagnetic flow meter × (number of holes N · m + n) (6) Next, a flow measurement device according to a third embodiment of the present invention will be described. explain.
【0057】図7はこの流量測定装置の部分構成を模式
的に示す斜視図であり、図6と同一部分には同一符号を
付してその詳しい説明は省略し、ここでは異なる部分に
ついてのみ述べる。なお、説明の都合上、図7は図6に
比べて電磁式流量計並びに穴部の数及び配置を変更して
いる。FIG. 7 is a perspective view schematically showing a partial configuration of the flow rate measuring apparatus. The same portions as those in FIG. 6 are denoted by the same reference numerals, and detailed description thereof will be omitted. Only different portions will be described here. . For convenience of explanation, FIG. 7 is different from FIG. 6 in the number and arrangement of the electromagnetic flow meters and the holes.
【0058】すなわち、本実施例装置は、第1及び第2
の実施例装置において、例えば電磁式流量計4bに蓋を
して静水時の零点調整を行う場合に管渠や開渠を流れる
流体の水位の増加を阻止するものであって、具体的には
例えば止水板3において電磁式流量計4bと同一の高さ
に設けられた流体排出穴としての2つの穴部9に予めそ
れぞれ蓋部材10を着脱自在に取付けた構成となってい
る。That is, the apparatus of the present embodiment comprises the first and second
In the apparatus of the embodiment, for example, when the electromagnetic flow meter 4b is covered with a lid to perform zero point adjustment at the time of still water, the water level of the fluid flowing through the sewer or open channel is prevented from increasing, and specifically, For example, the lid member 10 is detachably attached to two holes 9 as fluid discharge holes provided at the same height as the electromagnetic flow meter 4b in the water stop plate 3 in advance.
【0059】ここで、電磁式流量計4bに蓋部材10を
取付ける場合、図8の斜視図及び図9のA−A線矢視断
面図に示すように、作業者により各穴部9から取外され
た蓋部材が電磁式流量計4bの両端に取付けられる。こ
のため、蓋部材10の取付けにより、電磁式流量計4b
を流体が通過しなくなっても、該流体が蓋部材10を外
された穴部9を通過するようになるので、流体のせき止
めによる水位の増加を阻止しながら、静水ゼロ調整を行
うことができる。Here, when attaching the cover member 10 to the electromagnetic flow meter 4b, as shown in the perspective view of FIG. 8 and the cross-sectional view taken along the line AA of FIG. The removed lid members are attached to both ends of the electromagnetic flow meter 4b. For this reason, by attaching the lid member 10, the electromagnetic flow meter 4 b
Even if the fluid does not pass through, the fluid will pass through the hole 9 from which the cover member 10 has been removed, so that the static water zero adjustment can be performed while preventing an increase in the water level due to the damming of the fluid. .
【0060】上述したように第3の実施例によれば、第
1及び第2の実施例装置の構成に加え、止水板3に流体
排出用の穴部9を設け、この穴部9に静水ゼロ調整用の
流量計の蓋部材10を着脱自在に取付けているので、第
1及び第2の実施例の効果に加え、静水ゼロ調整の際
に、この蓋部材10を穴部9から取外して流量計4bに
取付けることにより、流量計4bに蓋をしても穴部9か
ら流体が流れるようにしたので、流体の流れを止めず、
水位の増加によるオーバーフローを阻止し、静水ゼロ調
整時の安全性を確保することができる。As described above, according to the third embodiment, in addition to the structure of the first and second embodiments, the water stop plate 3 is provided with a hole 9 for discharging the fluid, and the hole 9 is formed in the hole 9. Since the lid member 10 of the flow meter for zero water adjustment is detachably attached, in addition to the effects of the first and second embodiments, the lid member 10 is removed from the hole 9 at the time of zero water adjustment. By attaching to the flow meter 4b, the fluid can flow from the hole 9 even when the flow meter 4b is covered, so that the flow of the fluid is not stopped.
Overflow due to an increase in water level can be prevented, and safety at the time of zero adjustment of still water can be ensured.
【0061】なお、上記第3の実施例では、2つの穴部
9にそれぞれ蓋部材10を取付けた場合を説明したが、
これに限らず、1つの穴部のみに蓋部材を取付けると共
に、他の蓋部材を管渠や開渠の近傍に配置した構成とし
ても、本発明を同様に実施して同様の効果を得ることが
できる。その他、本発明はその要旨を逸脱しない範囲で
種々変形して実施できる。In the third embodiment, the case where the lid members 10 are attached to the two holes 9 has been described.
The present invention is not limited to this, and the same effect can be obtained by mounting the lid member only in one hole and arranging the other lid member in the vicinity of the sewer or the open channel. Can be. In addition, the present invention can be implemented with various modifications without departing from the scope of the invention.
【0062】[0062]
【発明の効果】以上説明したように請求項1および請求
項2の発明によれば、管渠や開渠に、当該管渠や開渠の
形状に見合った外形形状を有する止水板を設け、この止
水板に、流体を導入しかつ流量計が取り付け可能な穴部
を鉛直方向に複数箇所設け、各々の穴部に流量計をそれ
ぞれ取り付けて、当該各々の流量計内へ流体を導入する
か、または管渠や開渠に、当該管渠や開渠の形状に見合
った外形形状を有する流量計を取り付けて、当該流量計
内へ流体を導入するようにし、さらに必要に応じて、各
々の流量計の指示を加算したものが実流量となるように
流量を演算して出力する1台の変換器を付加するように
したので、管渠や開渠を流れる下水や雨水等の流体の流
量を小流量から大流量まで高精度に測定することが可能
な極めて信頼性の高い流量測定装置を提供できる。As described above, according to the first and second aspects of the present invention, a water stop plate having an outer shape corresponding to the shape of the sewer or open channel is provided on the sewer or open channel. In this water stop plate, a plurality of holes for introducing a fluid and attaching a flow meter are provided in a vertical direction, and a flow meter is attached to each of the holes, and a fluid is introduced into each of the flow meters. Or, to a sewer or open channel, to attach a flow meter having an outer shape matching the shape of the sewer or open channel, to introduce a fluid into the flow meter, and further, if necessary, Since one converter that calculates and outputs the flow rate so that the sum of the indications of each flow meter becomes the actual flow rate is added, fluid such as sewage or rainwater flowing through the sewer or open drain is added. Highly reliable measurement of small to large flow rates There it is possible to provide a flow rate measuring device.
【0063】また、請求項3及び請求項4の発明によれ
ば、管渠や開渠に、管渠や開渠の形状に見合った外形形
状を有する止水板を設け、止水板に、流体を導入しかつ
流量計が取り付け可能な流量計用穴部を鉛直方向に複数
箇所設け、止水板に、流量計用穴部の内径と略同一の内
径を有する穴部を各々の流量計用穴部から水平方向に外
れた位置に設け、各々の流量計用穴部に流量計をそれぞ
れ取り付けて、各々の流量計内へ流体を導入するように
することにより、流体の流量が少ない場合、すなわち止
水板に設けられた下方の穴部にしか流体が流れない場合
には、下方の流量計の指示のみがそのまま出力され、ま
た流体の流量が増加した場合、すなわち止水板に設けら
れた下方および上方の穴部に流体が流れた場合には、上
方及び下方で同一の高さに設けられた流量計及び穴部毎
に、流量計による指示値と穴部の個数に流量計用穴部の
個数を加えた値とを乗じて当該上方及び下方における流
量値を算出し、且つこれら同一の高さ毎に算出した流量
値を互いに加算したものが実流量となるように演算出力
されて、流体の流量を小流量から大流量まで高い精度で
測定することができ、且つ鉛直方向に沿って1つずつ流
量計を設けるだけで流量測定を実行することができるの
で、構成の簡易化を図り得る流量測定装置を提供でき
る。According to the third and fourth aspects of the present invention, a water stop plate having an outer shape conforming to the shape of the sewer or open drain is provided on the sewer or open drain, and the water stop plate is provided with: A plurality of flow meter holes into which a fluid can be introduced and to which a flow meter can be attached are provided in the vertical direction, and a hole having substantially the same inner diameter as the inner diameter of the flow meter hole is formed in the water blocking plate. When the flow rate of the fluid is small, install the flow meter in each of the flow meter holes and install the flow meter into each flow meter hole to introduce the fluid into each flow meter. That is, when the fluid flows only through the lower hole provided in the water stop plate, only the indication of the lower flow meter is output as it is, and when the flow rate of the fluid increases, that is, provided in the water stop plate If fluid flows into the lower and upper holes provided, the same For each of the flowmeters and holes provided at the height, multiply the indicated value by the flowmeter and the value obtained by adding the number of holes for the flowmeter to the number of holes, to calculate the above and below flow rates. And the sum of the flow values calculated for each of the same heights is calculated and output so that the actual flow rate is obtained, and the flow rate of the fluid can be measured with high accuracy from a small flow rate to a large flow rate, and Since the flow measurement can be performed only by providing one flow meter in the vertical direction, it is possible to provide a flow measurement device that can simplify the configuration.
【0064】さらに、請求項5の発明によれば、請求項
1乃至4のうちのいずれか1項に記載の止水板に流体排
出穴を設け、流量計の静水ゼロ調整用の蓋部材を該流体
排出穴に着脱自在に取付けているので、請求項1乃至4
のうちの対応する請求項によって奏される効果に加え、
静水ゼロ調整の際に、この蓋部材を流体排出穴から取外
して流量計に取付けることにより、流量計に蓋をしても
流体排出穴から流体が流れるようにしたので、流体の流
れを止めず、水位の増加によるオーバーフローを阻止
し、静水ゼロ調整時の安全性を確保できる流量測定装置
を提供できる。According to a fifth aspect of the present invention, there is provided a water stop plate according to any one of the first to fourth aspects, wherein a fluid discharge hole is provided, and a cover member for zero-static water adjustment of the flow meter is provided. The fluid discharge hole is detachably attached to the fluid discharge hole.
In addition to the effects provided by the corresponding claim of
At the time of static water zero adjustment, by removing this lid member from the fluid discharge hole and attaching it to the flow meter, the fluid can flow from the fluid discharge hole even if the flow meter is covered, so the flow of the fluid is not stopped In addition, it is possible to provide a flow rate measuring device that can prevent overflow due to an increase in water level and can ensure safety when zero water is adjusted.
【図1】本発明の第1の実施例に係る流量測定装置の構
成を示す斜視図。FIG. 1 is a perspective view showing a configuration of a flow measuring device according to a first embodiment of the present invention.
【図2】同実施例における止水板(穴部が2箇所の場
合)の構成例を示す正面図。FIG. 2 is a front view showing a configuration example of a water stoppage plate (in a case where there are two holes) in the embodiment.
【図3】同実施例における止水板(穴部が3箇所以上の
場合)の構成例を示す正面図。FIG. 3 is a front view showing a configuration example of a water stop plate (when there are three or more holes) in the embodiment.
【図4】本発明による流量測定装置の他の実施例を示す
正面図。FIG. 4 is a front view showing another embodiment of the flow measuring device according to the present invention.
【図5】本発明による流量測定装置の他の実施例を示す
正面図。FIG. 5 is a front view showing another embodiment of the flow measuring device according to the present invention.
【図6】本発明の第2の実施例に係る流量測定装置の部
分構成図。FIG. 6 is a partial configuration diagram of a flow measurement device according to a second embodiment of the present invention.
【図7】本発明の第3の実施例に係る流量測定装置の部
分構成を模式的に示す斜視図。FIG. 7 is a perspective view schematically showing a partial configuration of a flow measurement device according to a third embodiment of the present invention.
【図8】同実施例における静水ゼロ調整時の流量測定装
置の部分構成を示す斜視図。FIG. 8 is a perspective view showing a partial configuration of a flow rate measuring device at the time of zero water adjustment in the embodiment.
【図9】同実施例における静水ゼロ調整時の流量測定装
置の部分構成を示すA−A線矢視断面図。FIG. 9 is a cross-sectional view taken along line AA of FIG. 9 showing a partial configuration of the flow rate measuring device at the time of zero water static adjustment in the embodiment.
【図10】従来の流量測定方式の一例を示す斜視図。FIG. 10 is a perspective view showing an example of a conventional flow measurement method.
【図11】従来の流量測定方式の他の例を示す斜視図。FIG. 11 is a perspective view showing another example of a conventional flow measurement method.
1…管渠、2…開渠、3…止水板、3a,3b…穴部、
4…一体形電磁式流量計、5…流量計、6…流量計5の
内径部、7…管渠1や開渠2の形状、8…短管、9…穴
部、10…蓋部材、11…流速計、12…超音波レベル
計、13…設置ピット、14…管路。1 ... sewer, 2 ... open channel, 3 ... water stop board, 3a, 3b ... hole,
4 ... Integral electromagnetic flowmeter, 5 ... Flowmeter, 6 ... Inner diameter of flowmeter 5, 7 ... Shape of culvert 1 and open culvert 2, 8 ... Short pipe, 9 ... Hole, 10 ... Lid member, 11: velocity meter, 12: ultrasonic level meter, 13: installation pit, 14: pipeline.
───────────────────────────────────────────────────── フロントページの続き (58)調査した分野(Int.Cl.7,DB名) G01F 1/00 - 15/18 ──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int.Cl. 7 , DB name) G01F 1/00-15/18
Claims (5)
の流量を測定する流量測定装置において、 前記管渠や開渠に、当該管渠や開渠の形状に見合った外
形形状を有する止水板を設け、 前記止水板に、前記流体を導入しかつ流量計が取り付け
可能な穴部を鉛直方向に複数箇所設け、 前記各々の穴部に流量計をそれぞれ取り付けて、当該各
々の流量計内へ流体を導入するようにしたことを特徴と
する流量測定装置。1. A flow rate measuring device for measuring a flow rate of a fluid such as sewage or rainwater flowing through a sewer or open drain, wherein the sewer or open drain has an outer shape corresponding to the shape of the sewer or open drain. Providing a water stop plate having, in the water stop plate, a plurality of holes in which the fluid is introduced and a flow meter can be attached are provided in a vertical direction, and a flow meter is attached to each of the holes, A flow measuring device characterized in that a fluid is introduced into a flow meter of the present invention.
て、 前記各々の穴部の高さを相互に交錯させるようにしたこ
とを特徴とする流量測定装置。2. The flow measuring device according to claim 1, wherein the heights of the holes are intersected with each other.
の流量を測定する流量測定装置において、 前記管渠や開渠に、当該管渠や開渠の形状に見合った外
形形状を有する止水板を設け、 前記止水板に、前記流体を導入しかつ流量計が取り付け
可能な流量計用穴部を鉛直方向に複数箇所設け、 前記止水板に、前記流量計用穴部の内径と略同一の内径
を有する穴部を前記各々の流量計用穴部から水平方向に
外れた位置に設け、 前記各々の流量計用穴部に流量計をそれぞれ取り付け
て、当該各々の流量計内へ流体を導入するようにしたこ
とを特徴とする流量測定装置。3. A flow measuring device for measuring a flow rate of a fluid such as sewage or rainwater flowing through a sewer or open channel, wherein the sewer or open channel has an outer shape matching the shape of the sewer or open channel. Providing a water stop plate having a plurality of flow meter holes, in which the fluid is introduced and a flow meter can be attached to the water stop plate in a vertical direction, and the flow stop hole is provided in the water stop plate. A hole having an inner diameter substantially the same as the inner diameter of the flowmeter is provided at a position horizontally offset from each of the flowmeter holes, and a flowmeter is attached to each of the flowmeter holes, and the respective flow rates are A flow measuring device characterized in that a fluid is introduced into the meter.
て、 前記止水板における同一の高さに設けられた流量計及び
穴部毎に、当該流量計による指示値と当該穴部の個数に
当該流量計用穴部の個数を加えた値とを乗じて当該高さ
における流量値を算出し、且つこれら同一の高さ毎に算
出した流量値を互いに加算したものが実流量となるよう
に流量を演算して出力する1台の変換器を付加して成る
ことを特徴とする流量測定装置。4. The flow rate measuring device according to claim 3, wherein, for each of the flow meter and the hole provided at the same height in the water stop plate, a value indicated by the flow meter and the number of the holes are used. The flow rate value at the height is calculated by multiplying the flow rate value by the value obtained by adding the number of the flow meter holes, and the actual flow rate is obtained by adding the flow rate values calculated at the same height to each other. A flow rate measuring apparatus characterized by adding one converter for calculating and outputting a flow rate.
記載の流量測定装置において、 前記止水板に流体排出穴を設け、前記流量計の静水ゼロ
調整用の蓋部材を前記流体排出穴に着脱自在に取付けた
ことを特徴とする流量測定装置。5. The flow measuring device according to claim 1, wherein a fluid discharge hole is provided in the water stop plate, and a cover member for zero adjustment of static water of the flow meter is provided with the fluid. A flow measuring device, which is detachably attached to a discharge hole.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP22009394A JP3249304B2 (en) | 1993-11-24 | 1994-09-14 | Flow measurement device |
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP5-293024 | 1993-11-24 | ||
JP29302493 | 1993-11-24 | ||
JP22009394A JP3249304B2 (en) | 1993-11-24 | 1994-09-14 | Flow measurement device |
Publications (2)
Publication Number | Publication Date |
---|---|
JPH07198431A JPH07198431A (en) | 1995-08-01 |
JP3249304B2 true JP3249304B2 (en) | 2002-01-21 |
Family
ID=26523533
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP22009394A Expired - Fee Related JP3249304B2 (en) | 1993-11-24 | 1994-09-14 | Flow measurement device |
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JP (1) | JP3249304B2 (en) |
Families Citing this family (3)
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CN106017577A (en) * | 2016-06-22 | 2016-10-12 | 中国农业科学院农业资源与农业区划研究所 | Method and device for monitoring agricultural nonpoint source pollution drainage quantity of polder |
CN105973307A (en) * | 2016-06-22 | 2016-09-28 | 中国农业科学院农业资源与农业区划研究所 | Polder farmland non-point source pollution main water process monitoring device and method |
CN109029597B (en) * | 2018-09-10 | 2024-02-20 | 浙江省水利河口研究院(浙江省海洋规划设计研究院) | Channel water measuring device and method |
-
1994
- 1994-09-14 JP JP22009394A patent/JP3249304B2/en not_active Expired - Fee Related
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Publication number | Publication date |
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JPH07198431A (en) | 1995-08-01 |
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