JP3144971B2 - Water leak detection device - Google Patents
Water leak detection deviceInfo
- Publication number
- JP3144971B2 JP3144971B2 JP31623393A JP31623393A JP3144971B2 JP 3144971 B2 JP3144971 B2 JP 3144971B2 JP 31623393 A JP31623393 A JP 31623393A JP 31623393 A JP31623393 A JP 31623393A JP 3144971 B2 JP3144971 B2 JP 3144971B2
- Authority
- JP
- Japan
- Prior art keywords
- flow rate
- water
- water leakage
- pipeline network
- graph
- 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
- Examining Or Testing Airtightness (AREA)
- Pipeline Systems (AREA)
Description
【０００１】[0001]
【産業上の利用分野】本発明は管路からの漏水を検知す
る漏水検知装置、特に水道分野における漏水検知装置に
関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a device for detecting water leakage from a pipeline, and more particularly to a device for detecting water leakage in the field of water supply.
【０００２】[0002]
【従来の技術】例えば、水道管路網において、漏水個所
がある場合、その漏水量は漏水部分の拡大により時間が
経過するごとに徐々に増大傾向となり、最後には地上に
あふれ一般の人に漏水と分る。2. Description of the Related Art For example, when there is a leak point in a water pipe network, the leak amount gradually increases as time elapses due to the expansion of the leak portion, and finally overflows to the general public. I know that it is leaking.
【０００３】このような水道管路における漏水の検知
は、従来漏水検知器を使って、水道管路が埋設されてい
る道路上を、交通量が少なくなった夜間に人手により行
なわれている。しかもこの漏水検知作業は、配水管路網
すべてに対して行なわれているので、その調査量は数百
ｋｍにものぼる自治体がほとんどである。[0003] The detection of water leakage in such a water pipe is conventionally performed manually on a road in which the water pipe is buried by using a water leak detector at night when traffic volume is reduced. In addition, since this leak detection work is performed on the entire distribution pipeline network, the survey amount is almost several hundred km in most local governments.
【０００４】[0004]
【発明が解決しようとする課題】このように、自治体が
管理している管路網のすべての漏水調査をすることは、
漏水していない管路網、すなわち本来調査しなくてもよ
い所まで調査することになり、漏水調査という夜間作業
にかかる時間と費用にムダが生じており、何等かの改善
策が要望されていた。As described above, it is necessary to investigate all leaks in the pipeline network managed by the local government.
The pipeline network that has not leaked water, that is, the area that does not need to be inspected, will be investigated, and the time and cost required for night work of water leakage inspection will be wasted, and some improvement measures are required. Was.
【０００５】本発明は上記要望に応えるためになされた
もので、漏水が発生している点を含む管路網を特定し、
この特定した管路網のみを漏水調査する漏水検知装置を
提供することを目的とするものである。SUMMARY OF THE INVENTION The present invention has been made to meet the above-mentioned demand, and specifies a pipeline network including a point where a leak has occurred.
It is an object of the present invention to provide a water leakage detection device for investigating water leakage only in the specified pipeline network.
【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
に、本発明の漏水検出装置は、配水管路網の漏水を検出
する漏水検出装置において、予め対応付けられた配水管
路網に設けられ、その配水管路網の日最低流量を測定す
る流量計と、この流量計によって求められた日最低流量
を一定期間時系列に記録してグラフ化し、このグラフを
１次関数に近似した１次式を求め、この１次式の傾きま
たはこの傾きに基づく前記一定期間における始点と終点
との流量差が、予め設定した基準値を越えると漏水あり
と判断するデータ処理装置とを備えたことを特徴とす
る。To achieve the above object, according to the Invention The water leakage detecting apparatus of the present invention, detects the leakage of the water distribution pipeline network
Water detector that is associated in advance
A flow meter installed in a road network to measure the daily minimum flow rate of the distribution pipeline network, and the daily minimum flow rate determined by this flow meter
Is recorded in time series for a certain period and graphed, and this graph is
A linear expression that approximates a linear function is obtained, and the slope of the linear expression is calculated.
Or the starting point and ending point in the fixed period based on this slope
If the flow rate difference with
And a data processing device for determining that
【０００７】[0007]
【作用】本発明によると、予め対応付けられた配水管路
網の日最低流量を測定する流量計を設け、この流量計に
より測定された日最低流量を一定期間時系列にデータ処
理装置に入力してグラフ化し、さらにこのグラフを１次
関数に近似した１次式を求め、この１次式の傾きまたは
この傾きに基づく前記一定期間における始点と終点との
流量差が、予め設定した基準値を越えているか否かを前
記データ処理装置で判別し、前記流量差が予め設定した
基準値を越えている場合に当該管路網に漏水が発生して
いると判断できる。According to the present invention, a water distribution pipe associated in advance is provided.
Install a flow meter to measure the daily minimum flow rate of the net, and this flow meter
Data processing the minimum flow rate for a certain period time-series day, which is more measured
The graph is input to the processing device, and a linear expression approximating this graph to a linear function is obtained.
The difference between the start point and the end point in the certain period based on this slope
Check whether the flow rate difference exceeds a preset reference value.
When the flow rate difference exceeds a preset reference value, it can be determined that water leakage has occurred in the pipeline network.
【０００８】[0008]
【実施例】以下、本発明の実施例を図を参照して説明す
る。図１は本発明の一実施例のシステム構成図である。
同図において、１は管路網、２は管路網１への供給水
量，特に日最低水量を測定する流量計、３は流量計２か
らの流量信号Ｓを入力するデータ処理装置である。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a system configuration diagram of an embodiment of the present invention.
In the figure, 1 is a pipeline network, 2 is a flow meter for measuring the amount of water supplied to the pipeline network 1, especially the daily minimum water volume, and 3 is a data processing device for inputting a flow signal S from the flow meter 2.
【０００９】図２はデータ処理装置３の演算内容を説明
するためのフロー図であり、本データ処理装置３は流量
の記憶回路１１、日最低流量グラフ作成回路１２、日最
低流量近似グラフ作成回路１３及び漏水判定回路１４と
から構成されている。２１は日最低流量グラフ、２２は
１次関数グラフである。 FIG. 2 is a flow chart for explaining the operation contents of the data processing device 3. The data processing device 3 includes a flow rate storage circuit 11, a daily minimum flow rate graph creating circuit 12, and a daily minimum flow rate approximate graph creating circuit. 13 and a water leakage determination circuit 14. 21 is the daily minimum flow rate graph, 22 is
It is a linear function graph.
【００１０】次に、本実施例の漏水検出手順について説
明する。漏水の指標となる日最低流量は流量計２によっ
て測定され、測定信号Ｓとなってデータ処理装置３に入
力される。データ処理装置３では、この流量データを流
量記憶回路１１で記憶する。この流量データから漏水検
知のための期間設定に基づいて、日最低流量グラフ作成
回路１２により日最低流量を数ヶ月から数年（一定期
間）に亘ってグラフ化して日最低流量グラフ２１を作成
する。この日最低流量グラフ２１を日最低流量近似グラ
フ作成回路１３により最小二乗法を用いて１次関数グラ
フ２２を作成する。ｙｓとｙｅは一定期間における始点
の流量と終点の流量である。Next, a procedure for detecting water leakage according to this embodiment will be described. The daily minimum flow rate serving as an indicator of water leakage is measured by the flow meter 2, and is input as a measurement signal S to the data processing device 3. In the data processing device 3, the flow rate data is stored in the flow rate storage circuit 11. From the flow data, the daily minimum flow rate graph creation circuit 12 determines the daily minimum flow rate for several months to several years
) To create a daily minimum flow rate graph 21. The daily minimum flow rate graph 21 is formed into a linear function graph 22 by the daily minimum flow rate approximate graph generation circuit 13 using the least square method. y s and y e is the flow rate of the start point of the flow rate and the end point in a certain period.
【００１１】このグラフ２２は、漏水判定回路１４にお
いて、グラフ２２に表わせられた１次式ｙ＝ａｘ＋ｂに
おいて、傾きａの値か、グラフ２２内の流量ｙe 、ｙs
の差“ｙe −ｙs ”の値が基準値を超えているか否かを
判断し、これにより漏水の有無を判定する。この様に最
近の水道施設において、ほとんど設置されている流量計
とデータ処理装置を使って、上記データ処理装置の演算
をすることで漏水している管路網を容易に特定できる。In the graph 22, in the water leakage determination circuit 14, in the linear expression y = ax + b shown in the graph 22, the value of the slope a or the flow rates y e and y s in the graph 22
The value of the difference "y e -y s" it is determined whether it exceeds the reference value, thereby determining the presence or absence of water leakage. As described above, in a recent water supply facility, a leaky pipeline network can be easily specified by calculating the data processing device using a flow meter and a data processing device which are almost installed.
【００１２】以上説明したように、最近の水道施設にお
いてほとんど設置されている流量計とデータ処理装置を
使って、従来のように無作為に管路網全体を漏水調査す
る方法から漏水している管路網を特定して漏水調査する
方法に変更することが可能となり、従来の漏水検出方法
にくらべて流量計とデータ処理装置により、漏水してい
る管路網を特定できるので、漏水調査に要する時間と費
用が削減できる。[0012] As described above, water is leaked from the conventional method of randomly checking the entire pipeline network using a flow meter and a data processing device which are almost installed in a recent water supply facility. It is possible to change to a method of leak detection by specifying the pipeline network, and it is possible to identify the leaking pipeline network with a flow meter and a data processing device compared to the conventional leak detection method. The time and cost required can be reduced.
【００１３】[0013]
【発明の効果】以上説明したように、本発明によると予
め対応付けられた配水管路網に設けられた流量計と、こ
の流量計により測定された日最低流量を一定期間時系列
に入力、処理するデータ処理装置により、漏水している
管路網を特定できるので、漏水調査に要する時間と費用
が削減できる、というすぐれた効果を奏する。As described in the foregoing, according to the present invention pre
A flow meter provided in order corresponding Tagged water distribution pipeline network, this
The daily minimum flow rate measured by the flow meter in
Since the leaking pipeline network can be specified by the data processing device for inputting and processing the data, an excellent effect that the time and cost required for the water leakage investigation can be reduced is obtained.
【図１】本発明の一実施例のシステム構成図。FIG. 1 is a system configuration diagram of an embodiment of the present invention.
【図２】図１のデータ処理装置の演算内容を説明するた
めのフロー図。FIG. 2 is a flowchart for explaining the operation contents of the data processing device of FIG. 1;
１…配水管路網、２…流量計、３…データ処理装置、１
１…流量記憶回路、１２…日最低流量グラフ作成回路、
１３…日最低流量近似グラフ作成回路、１４…漏水判定
回路。DESCRIPTION OF SYMBOLS 1 ... Water distribution network, 2 ... Flow meter, 3 ... Data processor, 1
1: Flow rate storage circuit, 12: Daily minimum flow rate graph creation circuit,
13: daily minimum flow rate approximation graph creation circuit, 14: water leakage judgment circuit.
Claims (1)
置において、予め対応付けられた配水管路網に設けら
れ、その配水管路網の日最低流量を測定する流量計と、
この流量計によって求められた日最低流量を一定期間時
系列に記録してグラフ化し、このグラフを１次関数に近
似した１次式を求め、この１次式の傾きまたはこの傾き
に基づく前記一定期間における始点と終点との流量差
が、予め設定した基準値を越えると漏水ありと判断する
データ処理装置とを備えたことを特徴とする漏水検出装
置。1. A water leakage detection device for detecting water leakage in a water distribution pipeline network, wherein the water leakage detection device is provided in a water distribution pipeline network associated in advance.
A flow meter that measures the daily minimum flow rate of the distribution network ,
The daily minimum flow rate obtained by this flow meter is calculated for a certain period of time.
Record the data in a series and create a graph.
Find a similar linear equation and calculate the slope of this linear equation or this slope
Difference between the start point and the end point in the certain period based on
A data processing device for determining that there is a water leak when a predetermined reference value is exceeded .
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP31623393A JP3144971B2 (en) | 1993-12-16 | 1993-12-16 | Water leak detection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP31623393A JP3144971B2 (en) | 1993-12-16 | 1993-12-16 | Water leak detection device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH07167732A JPH07167732A (en) | 1995-07-04 |
| JP3144971B2 true JP3144971B2 (en) | 2001-03-12 |
Family
ID=18074801
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP31623393A Expired - Lifetime JP3144971B2 (en) | 1993-12-16 | 1993-12-16 | Water leak detection device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3144971B2 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| PL196979B1 (en) * | 1999-10-26 | 2008-02-29 | Peter Martinek | Method and measuring head for carrying out measurements in water supply systems |
| JP4612696B2 (en) * | 2008-02-13 | 2011-01-12 | 株式会社東芝 | Water leakage diagnosis device and water leakage diagnosis method for water distribution pipe |
| JP2021128140A (en) * | 2020-06-30 | 2021-09-02 | 株式会社ヤマト | Water leakage monitoring system |
-
1993
- 1993-12-16 JP JP31623393A patent/JP3144971B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH07167732A (en) | 1995-07-04 |
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