JPH08136528A - Measuring apparatus of amount of used water for water quality monitor - Google Patents
Measuring apparatus of amount of used water for water quality monitorInfo
- Publication number
- JPH08136528A JPH08136528A JP6274117A JP27411794A JPH08136528A JP H08136528 A JPH08136528 A JP H08136528A JP 6274117 A JP6274117 A JP 6274117A JP 27411794 A JP27411794 A JP 27411794A JP H08136528 A JPH08136528 A JP H08136528A
- Authority
- JP
- Japan
- Prior art keywords
- water
- time
- valve
- pipe
- meter
- 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.)
- Pending
Links
Landscapes
- Measurement Of Levels Of Liquids Or Fluent Solid Materials (AREA)
- Measuring Volume Flow (AREA)
Abstract
Description
【0001】[0001]
【産業上の利用分野】本発明は、例えば上水道水中の残
留塩素量、pH、濁度、色度などを計測して水質を監視
する水質監視装置において、その水質監視に必要な水量
が流通しているか否かを測定するための使用水量測定装
置に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a water quality monitoring device for monitoring the water quality by measuring the amount of residual chlorine, pH, turbidity, chromaticity, etc. in tap water, for example. The present invention relates to a used water amount measuring device for measuring whether or not there is water.
【0002】[0002]
【従来の技術】例えば上水道水の水質を監視をするた
め、上水道用本管に接続した配管に残留塩素計、pH計
及び濁度色度計などからなる水質監視装置を設け、前記
配管中に上水道試料水を100ml/min〜350m
l/min程度の低流量で流通させることにより、その
試料水中の残留塩素量、pH値、濁度、色度などを計測
することが行われているが、前記配管中に異物や気泡な
どが溜まって試料水の流量が低下した場合には、その試
料水中の残留塩素量などが変化して、水質監視装置によ
り計測した水質データに異常が生じる虞れがある。2. Description of the Related Art For example, in order to monitor the water quality of tap water, a water quality monitoring device consisting of a residual chlorine meter, a pH meter, a turbidity color meter, etc. is provided in a pipe connected to a main water supply pipe, 100 ml / min to 350 m of tap water sample water
It has been performed to measure the residual chlorine amount, pH value, turbidity, chromaticity, etc. in the sample water by circulating it at a low flow rate of about 1 / min. When the flow rate of the sample water is accumulated and decreases, the amount of residual chlorine in the sample water may change and the water quality data measured by the water quality monitoring device may be abnormal.
【0003】そこで、従来、フロート式流量計を用いて
前記配管中を水質監視に必要な水量が流通しているか否
かを測定することが行われている。Therefore, conventionally, it has been practiced to use a float type flow meter to measure whether or not the amount of water required for water quality monitoring flows through the pipe.
【0004】[0004]
【発明が解決しようとする課題】上記フロート式流量計
では、構成が簡単で安価であるという利点があるが、比
較的短期間で流量計内部やフロートに水垢が付着するこ
とにより精度が低下し、流量を正確に測定することが困
難になる。そこで、その精度低下を防ぐため、配管中を
3カ月に1度程度、定期的に洗浄した上、流量調整しな
くてはならず、保守点検に手間と時間がかかるという欠
点がある。The above-mentioned float type flow meter has an advantage that the structure is simple and inexpensive, but the accuracy is deteriorated due to the adherence of scale to the inside of the flow meter or the float in a relatively short period of time. , It becomes difficult to measure the flow rate accurately. Therefore, in order to prevent the deterioration of the accuracy, it is necessary to regularly clean the inside of the pipe once every three months and to adjust the flow rate, which is troublesome and time-consuming for maintenance and inspection.
【0005】また、小流量で精度の高い電磁流量計を用
いることも考えられるが、これは、高価であり、経年変
化によって測定誤差が生じるという欠点がある。本発明
は、上記欠点に鑑み、構成が簡単で安価であり、しかも
長期にわたって流量を正確に測定することができる水質
監視装置における使用水量測定装置を提供することを目
的としている。It is also conceivable to use an electromagnetic flow meter with a small flow rate and high accuracy, but this has the drawback that it is expensive and causes measurement errors due to aging. The present invention has been made in view of the above-mentioned drawbacks, and an object of the present invention is to provide a water consumption measuring device in a water quality monitoring device which has a simple structure and is inexpensive, and which can accurately measure a flow rate over a long period of time.
【0006】[0006]
【課題を解決するための手段】上記目的を達成するた
め、本発明は、配管に残留塩素計、pH計及び濁度色度
計などを設けた水質監視装置において、前記配管の適所
に貯水槽を介装すると共に、該貯水槽内の水面が所定の
上限水位に達したことを検出する水面検出器を設け、且
つ、前記配管の貯水槽近くの下流側に開閉弁を設け、該
開閉弁を一定または任意の期間ごとに閉鎖すると共に、
その閉鎖時から前記水面検出器が水面を検出するまでの
時間を計測してその計測時間と予め定めた基準時間とを
比較演算し、前記計測時間が基準時間よりも長い場合に
は警告信号を出力する制御装置を設けたことを特徴とし
ている。In order to achieve the above object, the present invention is a water quality monitoring device in which a pipe is provided with a residual chlorine meter, a pH meter, a turbidity color meter, etc. And a water level detector for detecting that the water level in the water tank has reached a predetermined upper limit water level, and an on-off valve on the downstream side of the pipe near the water tank. Closed at regular intervals or at any time,
The time from the closing time until the water surface detector detects the water surface is measured, the measured time is compared and calculated with a predetermined reference time, and when the measured time is longer than the reference time, a warning signal is issued. It is characterized in that a control device for outputting is provided.
【0007】[0007]
【作用】上記構成において、配管中を試料水が正常に流
通している場合の開閉弁の閉鎖時点から貯水槽内に試料
水を溜めてその水面が所定の上限水位に達したことを水
面検出器が検出した時点までの時間を予め測定し、その
測定時間に基づいて制御装置のメモリーに基準時間を記
憶させておく。In the above structure, when the sample water normally flows in the pipe, the sample water is stored in the water tank from the time when the on-off valve is closed, and it is detected that the water surface has reached the predetermined upper limit water level. The time up to the time when the detector detects it is measured in advance, and the reference time is stored in the memory of the control device based on the measured time.
【0008】そして、水質監視装置の作動中は、前記開
閉弁を常時開放して貯水槽内に試料水が溜まらないよう
にした状態で、前記制御装置により前記開閉弁を一定ま
たは任意の期間ごとに閉鎖し、その閉鎖時から前記水面
検出器による水面検出時までの時間を計測し、その計測
時間と前記基準時間とを比較演算し、前記計測時間が基
準時間よりも長い場合には、前記制御装置から監視室に
テレメータなどを介して警告信号を出力する。During operation of the water quality monitoring device, the control device keeps the on-off valve fixed or at regular intervals while the on-off valve is always open to prevent the sample water from accumulating in the water tank. Closed, measuring the time from the time of closing to the time of detecting the water surface by the water surface detector, comparing and calculating the measured time and the reference time, and if the measured time is longer than the reference time, A warning signal is output from the control device to the monitoring room via a telemeter or the like.
【0009】上記警告信号を受信した場合に、水質監視
装置により計測した水質データに異常が生じていても、
それは、配管中に異物や気泡などが溜まって流量が低下
していることによるものであると判断することができ
る。Even if the water quality data measured by the water quality monitoring device is abnormal when the warning signal is received,
It can be determined that this is because foreign matter, bubbles, and the like are accumulated in the pipe and the flow rate is reduced.
【0010】上記のように警告信号を受信した場合に
は、前記配管中を洗浄するなどして異物や気泡を除去
し、所定の流量を確保すればよい。これによって、再び
元の正常な状態に戻すことができる。When the warning signal is received as described above, foreign matter and bubbles may be removed by cleaning the inside of the pipe to secure a predetermined flow rate. As a result, the original normal state can be restored again.
【0011】この場合、使用水量測定装置の主要部分が
貯水槽と水面検出器と開閉弁とからなり、構造が簡単で
故障し難く製作費が安くつく。しかも、前記貯水槽内が
水垢などで汚れることによる計測誤差も微々たるもの
で、長期にわたって流量を正確に測定することができ
る。In this case, the main part of the water consumption measuring device is composed of a water tank, a water surface detector and an opening / closing valve, which has a simple structure, is hard to break down and is inexpensive to manufacture. Moreover, since the measurement error caused by the inside of the water storage tank being soiled with water stains is slight, the flow rate can be accurately measured over a long period of time.
【0012】[0012]
【実施例】以下、本発明の実施例を図面に基づいて説明
する。図1は本発明の一実施例である使用水量測定装置
1を備えた水質監視装置を示すものであって、その水質
監視装置は、上水道用本管(図示せず)に接続された第
1配管2に設けた濁度色度計3と、前記第1配管2に両
端部が接続された第2配管4に設けた残留塩素計5と、
前記第2配管4に両端部が接続された第3配管6に設け
たpH計7とからなり、前記使用水量測定装置1は、第
1配管2と第2配管4とにそれぞれ設けられている。Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 shows a water quality monitoring device provided with a water consumption measuring device 1 according to an embodiment of the present invention. The water quality monitoring device is a first water quality monitoring device connected to a main for water supply (not shown). A turbidity colorimeter 3 provided in the pipe 2, and a residual chlorine meter 5 provided in a second pipe 4 having both ends connected to the first pipe 2,
The pH meter 7 is provided in the third pipe 6 whose both ends are connected to the second pipe 4, and the water consumption measuring device 1 is provided in the first pipe 2 and the second pipe 4, respectively. .
【0013】前記使用水量測定装置1は、図2に示すよ
うに、配管2,4に介装した貯水槽9と、該貯水槽9内
に電極10aを垂下してその貯水槽9内の水面W.Lが
所定の上限水位HLに達したことを検知する水面検出器
10と、前記配管2,4の貯水槽9近くの下流側に設け
た電磁開閉弁11と、該電磁開閉弁11を開閉制御する
と共に、前記水面検出器10の検出信号を受けて警告信
号を出力するマイクロコンピュータからなる制御装置1
2とを備えている。As shown in FIG. 2, the water consumption measuring device 1 has a water tank 9 installed in pipes 2 and 4, and an electrode 10a is hung in the water tank 9 to suspend the water level in the water tank 9. W. A water surface detector 10 for detecting that L has reached a predetermined upper limit water level HL, an electromagnetic on-off valve 11 provided on the downstream side near the water tank 9 of the pipes 2 and 4, and an on-off control of the electromagnetic on-off valve 11. At the same time, the control device 1 including a microcomputer that receives a detection signal from the water surface detector 10 and outputs a warning signal
2 is provided.
【0014】上記構成によれば、使用水量測定装置1の
主要部分が貯水槽9と水面検出器10と電磁開閉弁11
とからなり、構造が簡単で故障し難く製作費が安くつ
き、しかも、前記貯水槽内が水垢などで汚れても、それ
によって生じる計測誤差も微々たるもので、長期にわた
って流量を正確に測定することができる。According to the above construction, the main parts of the water consumption measuring device 1 are the water tank 9, the water surface detector 10 and the electromagnetic on-off valve 11.
It has a simple structure, is hard to break down, and is cheap to manufacture. Moreover, even if the inside of the water tank is contaminated with scale, the measurement error caused by it is insignificant, and the flow rate can be accurately measured for a long time. be able to.
【0015】図1に示すように、第1配管2の上流端側
に手動開閉弁14,減圧弁15及び電動遮断弁16が設
けられ、第1配管2の下流側に手動開閉弁17が設けら
れ、また、第2配管4の第3配管6上流端側接続箇所よ
り下流側に電磁開閉弁18が設けられ、更に、第3配管
6の下流端側に電磁三方切換弁19が設けられると共
に、該電磁三方切換弁19と第1配管2とがドレンパイ
プ20により接続されている。As shown in FIG. 1, a manual opening / closing valve 14, a pressure reducing valve 15 and an electric shutoff valve 16 are provided on the upstream end side of the first pipe 2, and a manual opening / closing valve 17 is provided on the downstream side of the first pipe 2. Further, an electromagnetic opening / closing valve 18 is provided on the downstream side of the third pipe 6 upstream end side connection portion of the second pipe 4, and an electromagnetic three-way switching valve 19 is provided on the downstream end side of the third pipe 6. The electromagnetic three-way switching valve 19 and the first pipe 2 are connected by a drain pipe 20.
【0016】上記構成に基づいて使用水量の測定手順を
説明すると、各弁11.14,15,16,17を開放
し、電磁開閉弁18を閉鎖すると共に、電磁三方切換弁
19を切換え操作してドレンパイプ20を閉鎖した状態
で、配管2,4,6中を試料水が正常に流通している場
合の電磁開閉弁11の閉鎖時点から貯水槽9内に試料水
を溜めてその水面W.Lが電極10aに接して所定の上
限水位HLに達したことを水面検出器10が検出した時
点までの時間を予め測定し、その測定時間に基づいて制
御装置12のメモリーに基準時間tを記憶させておく。The procedure for measuring the amount of water used will be described based on the above configuration. Each valve 11.14, 15, 16, 17 is opened, the electromagnetic opening / closing valve 18 is closed, and the electromagnetic three-way switching valve 19 is switched. With the drain pipe 20 closed, the sample water is stored in the water storage tank 9 from the closing point of the electromagnetic opening / closing valve 11 when the sample water normally flows through the pipes 2, 4, and 6, and the water surface W . The time until the time when the water surface detector 10 detects that L has reached the predetermined upper limit water level HL in contact with the electrode 10a is measured in advance, and the reference time t is stored in the memory of the controller 12 based on the measured time. I will let you.
【0017】そして、水質監視装置の作動中は、前記電
磁開閉弁11を常時開放して貯水槽9内に水が溜まらな
いようにした状態で、前記制御装置12により該電磁開
閉弁11を一定または任意の期間ごとに閉鎖し、その閉
鎖時から前記水面検出器10による水面検出時までの時
間を計測し、その計測時間Tと貯水槽容積Vにより使用
水量Qを次式の演算により計測する。During operation of the water quality monitoring device, the electromagnetic on-off valve 11 is kept constant by the control device 12 in a state where the electromagnetic on-off valve 11 is always opened to prevent water from accumulating in the water tank 9. Or, it is closed every arbitrary period, the time from the closing to the time when the water surface is detected by the water surface detector 10 is measured, and the amount of water used Q is measured by the following formula by the measured time T and the volume V of the water tank. .
【0018】Q=V/T Qが許容最小水量qより小さい場合、または基準時間t
になってもHLに到達しない場合は警告信号を出力す
る。When Q = V / T Q is smaller than the minimum permissible water quantity q, or the reference time t
If it does not reach HL even if, the warning signal is output.
【0019】上記警告信号を受信した場合に、水質監視
装置により計測した水質データに異常が生じていても、
それは、配管2,4に異物や気泡などが溜まって流量が
低下していることによるものであると判断することがで
き、前記配管2,4中を洗浄して異物や気泡を除去する
ことにより、元の正常な状態に戻すことができる。Even if the water quality data measured by the water quality monitoring device is abnormal when the above warning signal is received,
It can be judged that this is because foreign matter, bubbles, etc. are accumulated in the pipes 2, 4 and the flow rate is reduced, and by cleaning the inside of the pipes 2, 4 to remove foreign substances and bubbles. , Can be returned to its original normal state.
【0020】また、前記計測水量Qが許容最小水量qよ
りも大きい場合(Q>q)には、配管2,4,6中を水
質監視に必要な水量が流通していると考えられるから、
前記制御装置12から監視室に警告信号を出力しない。
この状態で、水質監視装置により計測した水質データに
異常が生じている場合には、その水質データは正しく、
水質に異常が生じていると判断することができる。When the measured water amount Q is larger than the allowable minimum water amount q (Q> q), it is considered that the water amount necessary for water quality monitoring is flowing through the pipes 2, 4 and 6.
No warning signal is output from the control device 12 to the monitoring room.
In this state, if there is an abnormality in the water quality data measured by the water quality monitoring device, the water quality data is correct,
It can be judged that the water quality is abnormal.
【0021】[0021]
【発明の効果】本発明によれば、使用水量測定装置の主
要部分が貯水槽と水面検出器と開閉弁とからなり、構造
が簡単で故障し難く製作費が安くつく。しかも、前記貯
水槽内が水垢などで汚れることによる計測誤差も微々た
るもので、長期にわたって流量を正確に測定することが
できる。According to the present invention, the main part of the water consumption measuring device is composed of the water tank, the water surface detector and the on-off valve, and the structure is simple, it is hard to break down, and the manufacturing cost is low. Moreover, since the measurement error due to the inside of the water storage tank being soiled with water stains is slight, the flow rate can be accurately measured over a long period of time.
【図1】本発明の一実施例である使用水量測定装置を備
えた水質監視装置の概略説明図である。FIG. 1 is a schematic explanatory view of a water quality monitoring device equipped with a water usage measuring device according to an embodiment of the present invention.
【図2】同使用水量測定装置の縦断面図である。FIG. 2 is a vertical cross-sectional view of the same water consumption measuring device.
1 使用水量測定装置 2 第1配管 3 濁度色度計 4 第2配管 5 残留塩素計 7 pH計/導電率計 9 貯水槽 10 水面検出器 11 電磁開閉弁 12 制御装置 T 計測時間 t 基準時間 1 Water consumption measuring device 2 First piping 3 Turbidity colorimeter 4 Second piping 5 Residual chlorine meter 7 pH meter / conductivity meter 9 Water tank 10 Water level detector 11 Electromagnetic on-off valve 12 Control device T Measuring time t Reference time
Claims (1)
計などを設けた水質監視装置において、前記配管の適所
に貯水槽を介装すると共に、該貯水槽内の水面が所定の
上限水位に達したことを検出する水面検出器を設け、且
つ、前記配管の貯水槽近くの下流側に開閉弁を設け、該
開閉弁を一定または任意の期間ごとに閉鎖すると共に、
その閉鎖時から前記水面検出器が水面を検出するまでの
時間を計測してその計測時間と予め定めた基準時間とを
比較演算し、前記計測時間が基準時間よりも長い場合に
は警告信号を出力する制御装置を設けたことを特徴とす
る水質監視装置における使用水量測定装置。1. A water quality monitoring device having a pipe provided with a residual chlorine meter, a pH meter, a turbidity colorimeter, and the like, wherein a water tank is provided at an appropriate position of the pipe, and the water level in the water tank is set to a predetermined level. A water level detector for detecting that the upper limit water level has been reached is provided, and an on-off valve is provided on the downstream side near the water tank of the pipe, and the on-off valve is closed at regular or arbitrary intervals,
The time from the closing time until the water surface detector detects the water surface is measured, the measured time is compared and calculated with a predetermined reference time, and when the measured time is longer than the reference time, a warning signal is issued. A water consumption measuring device in a water quality monitoring device, which is provided with a control device for outputting.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP6274117A JPH08136528A (en) | 1994-11-09 | 1994-11-09 | Measuring apparatus of amount of used water for water quality monitor |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP6274117A JPH08136528A (en) | 1994-11-09 | 1994-11-09 | Measuring apparatus of amount of used water for water quality monitor |
Publications (1)
Publication Number | Publication Date |
---|---|
JPH08136528A true JPH08136528A (en) | 1996-05-31 |
Family
ID=17537259
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP6274117A Pending JPH08136528A (en) | 1994-11-09 | 1994-11-09 | Measuring apparatus of amount of used water for water quality monitor |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH08136528A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2005321195A (en) * | 2004-05-06 | 2005-11-17 | Mitsubishi Electric Corp | Water quality instrument system |
CN105091974A (en) * | 2015-08-28 | 2015-11-25 | 段林玲 | Water level detection device and water level detection method thereof |
-
1994
- 1994-11-09 JP JP6274117A patent/JPH08136528A/en active Pending
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2005321195A (en) * | 2004-05-06 | 2005-11-17 | Mitsubishi Electric Corp | Water quality instrument system |
JP4484575B2 (en) * | 2004-05-06 | 2010-06-16 | 三菱電機株式会社 | Water quality instrument system |
CN105091974A (en) * | 2015-08-28 | 2015-11-25 | 段林玲 | Water level detection device and water level detection method thereof |
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