JPH08184398A - Embedded piping leakage spot specifying method - Google Patents
Embedded piping leakage spot specifying methodInfo
- Publication number
- JPH08184398A JPH08184398A JP15795A JP15795A JPH08184398A JP H08184398 A JPH08184398 A JP H08184398A JP 15795 A JP15795 A JP 15795A JP 15795 A JP15795 A JP 15795A JP H08184398 A JPH08184398 A JP H08184398A
- Authority
- JP
- Japan
- Prior art keywords
- leak
- buried
- water
- hot water
- location
- 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
- 238000000034 method Methods 0.000 title claims abstract description 23
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 122
- 230000002950 deficient Effects 0.000 claims description 22
- 238000001514 detection method Methods 0.000 claims description 18
- 239000012530 fluid Substances 0.000 claims description 11
- 230000007547 defect Effects 0.000 abstract description 7
- 238000009412 basement excavation Methods 0.000 abstract description 4
- 238000010586 diagram Methods 0.000 description 7
- 238000011835 investigation Methods 0.000 description 6
- 238000009434 installation Methods 0.000 description 4
- 230000000644 propagated effect Effects 0.000 description 3
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000035939 shock Effects 0.000 description 2
- 210000003454 tympanic membrane Anatomy 0.000 description 2
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000003745 diagnosis Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
Landscapes
- Examining Or Testing Airtightness (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は埋設配管漏水箇所特定方
法に関する。特に本発明はビルディング診断技術の一貫
として行われる埋設配管の漏水箇所の特定方法に関す
る。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for identifying a leak location of a buried pipe. In particular, the present invention relates to a method for identifying a leak point in a buried pipe, which is performed as a part of building diagnosis technology.
【０００２】[0002]
【従来の技術】図４は従来の埋設配管における漏水箇所
の特定方法を説明する漏水箇所探知システム構成図であ
る。同図に示すように、ビルディングの床下、ビルディ
ングの周囲の地中等の埋設領域１には給水（又は排水）
に使用される埋設配管２が埋設される。この埋設配管２
はビルディング診断技術において調査対象物であり、欠
損による漏水が発生しているか否かが調査される。埋設
配管２の一端は止水弁２０を介して給水源に連結され、
埋設配管２の他端は給水栓２１に連結される。図中、符
号３０を付した矢印は埋設配管２内に流れる水の流れの
方向を示す。2. Description of the Related Art FIG. 4 is a block diagram of a water leak detection system for explaining a conventional method for identifying a water leak in a buried pipe. As shown in the figure, water is supplied (or drained) to the buried area 1 under the floor of the building or in the ground around the building.
The buried pipe 2 used for is buried. This buried pipe 2
Is an object of investigation in building diagnostic technology, and it is investigated whether or not water leakage due to a deficiency has occurred. One end of the buried pipe 2 is connected to a water supply source via a water shutoff valve 20,
The other end of the buried pipe 2 is connected to the water tap 21. In the figure, the arrow with reference numeral 30 indicates the direction of the flow of water flowing in the buried pipe 2.
【０００３】図５は前記埋設配管２の漏水箇所を拡大し
て示した断面図である。埋設配管２に欠損部４が発生し
た場合には漏水３１が発生し、この漏水３１に基づき欠
損部４の周囲に漏水音３２が波及する。埋設配管２の欠
損部４の位置つまり漏水箇所の特定には前述の漏水音３
２が利用される。漏水箇所の特定には探知システムが使
用される。探知システムは、漏水音３２を検出するマイ
ク５０及び５１、前記マイク５０、５１で各々検出され
た漏水音３２を各々増幅するアンプ５２及び５３、前記
アンプ５２、５３で各々増幅された漏水音３２に基づき
埋設配管２の漏水箇所を算出する演算装置５４を備え
る。FIG. 5 is an enlarged sectional view showing a water leakage point of the buried pipe 2. When the deficient portion 4 occurs in the buried pipe 2, water leakage 31 occurs, and the leakage sound 32 spreads around the deficient portion 4 based on the water leakage 31. To identify the position of the missing portion 4 of the buried pipe 2, that is, the location of the water leak,
2 is used. A detection system is used to identify the location of the leak. The detection system includes microphones 50 and 51 for detecting a leak sound 32, amplifiers 52 and 53 for amplifying the leak sound 32 detected by the microphones 50 and 51, and a leak sound 32 amplified by the amplifiers 52 and 53, respectively. An arithmetic unit 54 for calculating the water leakage location of the buried pipe 2 is provided.
【０００４】前記探知システムによる埋設配管２の漏水
箇所の特定方法においては、欠損部４と推定される位置
を挟み込んでマイク５０及び５１が設置される。例え
ば、図４に示すように、止水弁２０と最も右端に位置す
る給水栓２１との間に漏水箇所が存在すると推定し、止
水弁２０にはマイク５０が、給水栓２１にはマイク５１
が各々設置される。埋設配管２に欠損部４が存在する場
合には欠損部４から漏水３１が発生し併せて漏水音３２
が発生する。この漏水音３２は漏水箇所から埋設配管２
を通じて伝搬し、伝搬された漏水音３２は各々マイク５
０、５１で検出される。マイク５０、５１で各々検出さ
れた漏水音３２は各々アンプ５２、５３で増幅され、増
幅された漏水音３２は演算装置５４に入力される。演算
装置５４においては、マイク５０、５１の設置位置と漏
水音３２が到達した時間とから欠損部４の位置が算出さ
れ、埋設配管２の漏水箇所が特定される。In the method of identifying the water leak location of the buried pipe 2 by the detection system, the microphones 50 and 51 are installed so as to sandwich the position estimated to be the defective portion 4. For example, as shown in FIG. 4, it is estimated that there is a water leak point between the water shutoff valve 20 and the water tap 21 located at the rightmost end, and the water shutoff valve 20 has a microphone 50 and the water tap 21 has a microphone. 51
Are installed respectively. When the buried pipe 2 has a defective portion 4, water leakage 31 is generated from the defective portion 4 and water leakage sound 32 is generated.
Occurs. This leak sound 32 is from the leak point to the buried pipe 2
The leaked sound 32 propagated through the
It is detected at 0 and 51. The water leak sound 32 detected by the microphones 50 and 51 is amplified by the amplifiers 52 and 53, respectively, and the amplified water leak sound 32 is input to the arithmetic unit 54. In the arithmetic unit 54, the position of the defective portion 4 is calculated from the installation positions of the microphones 50 and 51 and the time when the water leak sound 32 arrives, and the water leak location of the buried pipe 2 is specified.
【０００５】図６は他の探知システムを示す構成図であ
る。同図に示す探知システムにおいては埋設領域１の表
面例えば地表面、床表面などに直接マイク６０が設置さ
れ、漏水箇所から表面に伝搬される漏水音３２がマイク
６０で検出される。この漏水音３２はアンプ６１で増幅
され、ヘッドホン６２を通して調査者７が直接漏水音３
２を聞き分け、漏水箇所が特定される。FIG. 6 is a block diagram showing another detection system. In the detection system shown in the figure, the microphone 60 is directly installed on the surface of the buried area 1, for example, the ground surface or the floor surface, and the water leak sound 32 propagated from the water leak location to the surface is detected by the microphone 60. This water leak sound 32 is amplified by the amplifier 61, and the investigator 7 directly leaks the water leak sound 3 through the headphones 62.
2 is identified and the location of water leakage is specified.
【０００６】[0006]
【発明が解決しようとする課題】しかしながら、前記図
４に示す探知システムを使用する漏水箇所の特定方法に
おいては、下記（１）乃至（４）の点の配慮がなされて
いない。However, the following points (1) to (4) are not taken into consideration in the method of identifying a leaking point using the detection system shown in FIG.
【０００７】（１）前記図４に示す探知システムを利用
した漏水箇所の特定方法においては、埋設配管２の欠損
部４を挟み込み埋設配管２の２箇所に各々マイク５０、
５１が配置される。欠損部４が予め予測できない場合に
は大まかな欠損部４の位置を探しださなければならな
い。このため、漏水箇所の特定に時間がかかり、さらに
漏水箇所の特定に要する調査作業の労力が増大する。(1) In the method of identifying a water leak location using the detection system shown in FIG. 4, the microphone 50 is inserted into each of the two locations of the buried pipe 2 by sandwiching the defective portion 4 of the buried pipe 2.
51 is arranged. If the defect portion 4 cannot be predicted in advance, the rough position of the defect portion 4 must be searched for. For this reason, it takes time to specify the water leakage location, and the labor of the survey work required to specify the water leakage location increases.
【０００８】（２）埋設配管２において漏水音３２の伝
搬速度が不明な場合には漏水箇所の算出のために伝搬速
度が求められる。伝搬速度を求めるには埋設配管２の材
質、配管径等を調べる必要があり、漏水箇所の特定に際
して埋設配管２の掘削作業や配管径などの測定作業が必
要になる。同様に漏水箇所の特定に時間がかかり、さら
に漏水箇所の特定に要する調査作業の労力が増大する。(2) When the propagation speed of the water leak sound 32 in the buried pipe 2 is unknown, the propagation speed is calculated to calculate the location of the water leak. In order to obtain the propagation velocity, it is necessary to check the material, the pipe diameter, etc. of the buried pipe 2, and the excavation work of the buried pipe 2 and the measurement work of the pipe diameter, etc. are required to identify the leak location. Similarly, it takes time to specify the location of the leak, and the labor of the investigation work required to identify the location of the leak increases.
【０００９】（３）マイク５０及び５１の設置距離が正
確に把握される必要があり、埋設配管２の配管経路を事
前に調査する事前調査作業を行う必要がある。同様に漏
水箇所の特定に時間がかかり、さらに漏水箇所の特定に
要する調査作業の労力が増大する。(3) The installation distances of the microphones 50 and 51 need to be accurately grasped, and it is necessary to carry out a preliminary survey work for surveying the pipe route of the buried pipe 2 in advance. Similarly, it takes time to specify the location of the leak, and the labor of the investigation work required to identify the location of the leak increases.
【００１０】（４）漏水箇所が漏水３１により水没して
いる場合には漏水音３２がほとんど発生しないので、漏
水箇所の特定ができない。(4) When the leaking point is submerged by the leaking water 31, the leaking sound 32 hardly occurs, so that the leaking point cannot be specified.
【００１１】さらに、前記図６に示す探知システムを使
用する漏水箇所の特定方法においては、下記（５）乃至
（８）の点の配慮がなされていない。Furthermore, in the method of identifying a water leak location using the detection system shown in FIG. 6, the following points (5) to (8) are not taken into consideration.
【００１２】（５）埋設配管２の材質が樹脂等、漏水音
３２が伝搬されない又はされにくい場合には図６に示す
探知システムが使用され、調査者７が直接ヘッドホン６
２で地表に伝搬される漏水音３２を聞き分ける必要があ
る。漏水音３２以外の雑音が発生する環境下においては
漏水箇所の特定が難しく漏水箇所の特定精度が著しく低
下するので、通常は雑音が少ない深夜の時間帯に調査作
業が行われる。このため、深夜の時間帯での調査作業に
起因する調査者の調査作業の労力が増大する。(5) When the material of the buried pipe 2 is resin or the like, and the water leakage sound 32 is not transmitted or is hard to be transmitted, the detection system shown in FIG. 6 is used, and the investigator 7 directly uses the headphones 6
It is necessary to distinguish the water leakage sound 32 propagated to the ground surface in 2. In an environment in which noise other than the water leak sound 32 is generated, it is difficult to identify the leak location, and the accuracy of identifying the leak location is significantly reduced. Therefore, the investigation work is usually performed in the midnight hours when the noise is low. For this reason, the labor of the surveyor's survey work due to the survey work in the midnight time period increases.
【００１３】（６）深夜の時間帯での調査作業であって
も漏水音３２以外の雑音がかなり発生するので、漏水音
３２であるか否かの判断には熟練が必要である。(6) Since noise other than the water leak sound 32 is considerably generated even during the investigation work in the midnight time, it is necessary to have skill in determining whether or not the water leak sound 32 is generated.
【００１４】（７）漏水音３２は小さいのでアンプ６１
で増幅した漏水音３２が調査者７に伝達されるが、不意
に衝撃音が発生した場合には衝撃音が増幅され調査者７
に伝達される。このため、ヘッドホン６２を通じて増幅
された衝撃音が調査者７の耳（鼓膜）に直接伝達された
場合には鼓膜を損傷するなどの危険性がある。(7) Since the leakage sound 32 is small, the amplifier 61
Although the leak sound 32 amplified in step 3 is transmitted to the investigator 7, the shock sound is amplified if the shock sound is unexpectedly generated, and the investigator 7
Is transmitted to Therefore, when the impact sound amplified through the headphones 62 is directly transmitted to the investigator's 7 ear (eardrum), there is a risk of damaging the eardrum.
【００１５】（８）調査者７は埋設配管２の配管経路の
全般にわたって漏水音３２を聞き分け、漏水箇所が特定
されるので、漏水箇所の特定に時間がかかり、さらに漏
水箇所の特定に要する調査作業の労力が増大する。(8) Since the investigator 7 hears the water leak sound 32 over the entire piping route of the buried pipe 2 and the leak point is specified, it takes time to specify the leak point, and the investigation required for specifying the leak point is further performed. Work effort increases.
【００１６】本発明は上記課題を解決するためになされ
たものであり、本発明の目的は漏水箇所の特定を容易に
行い、かつ確実に漏水箇所を特定できる埋設配管漏水箇
所特定方法を提供することにある。The present invention has been made in order to solve the above problems, and an object of the present invention is to provide a buried pipe leak point specifying method capable of easily specifying a leak point and surely specifying a leak point. Especially.
【００１７】[0017]
【課題を解決するための手段】上記課題を解決するた
め、本発明は、埋設配管漏水箇所特定方法において、埋
設領域に埋設された配管内に前記埋設領域に対して温度
差を有する流体を流入し、前記配管の欠損箇所から漏れ
出た流体による前記埋設領域の局部的な温度変化が発生
する箇所を検出し、前記検出結果に基づき前記配管の欠
損箇所を特定する、ことを特徴とする。前記前記埋設領
域の温度変化の検出には赤外線カメラが使用される。前
記流体には埋設領域の温度よりも温度が高い温水が使用
される。In order to solve the above-mentioned problems, the present invention provides a method for identifying a leak location of a buried pipe, in which a fluid having a temperature difference with respect to the buried region is introduced into the pipe buried in the buried region. Then, a location where a local temperature change in the buried region occurs due to the fluid leaking from the defective portion of the pipe is detected, and the defective portion of the pipe is specified based on the detection result. An infrared camera is used to detect a temperature change in the buried area. As the fluid, hot water having a temperature higher than that of the buried area is used.
【００１８】[0018]
【作用】本発明に係る埋設配管漏水箇所特定方法におい
ては、埋設配管内に流入された流体が埋設領域に対して
温度差を有するので、埋設配管の欠損箇所から漏れ出た
流体により埋設領域の欠損箇所の周囲に温度変化が発生
する。この温度変化は即座に検出できる。特に赤外線カ
メラを使用すれば温度変化は即座に検出できる。従っ
て、漏水音で漏水箇所を特定する方法におけるマイクの
設置作業、埋設配管の掘削作業、配管経路の事前調査作
業等がなくなるので、漏水箇所の特定が容易に行え、か
つ確実に漏水箇所が特定できる。In the method for identifying a leak location of a buried pipe according to the present invention, since the fluid flowing into the buried pipe has a temperature difference with respect to the buried area, the fluid leaked from the defective portion of the buried pipe causes Temperature changes occur around the defect. This temperature change can be detected immediately. Especially, if an infrared camera is used, the temperature change can be detected immediately. Therefore, there is no need for microphone installation work, buried pipe excavation work, and pre-survey work for the piping route in the method of identifying the leak location by the sound of leak, so the leak location can be easily identified and the leak location can be identified reliably. it can.
【００１９】[0019]
【実施例】以下、本発明の構成について実施例とともに
説明する。なお、本実施例において従来と同一機能を有
するものは同一符号を付け、説明が重複するので、同一
機能の説明は省略する。EXAMPLES The structure of the present invention will be described below with reference to examples. In this embodiment, those having the same functions as those of the conventional ones are designated by the same reference numerals, and the description thereof will be duplicated.
【００２０】図１は本発明の一実施例に係る埋設配管に
おける漏水箇所の特定方法を説明する漏水箇所探知シス
テム構成図である。同図に示すように、漏水箇所探知シ
ステムは埋設配管２に連結される給水給２１（本実施例
において左側に位置する給水弁２１）に取り付けた温水
供給ユニット８及び赤外線カメラ９を備える。FIG. 1 is a block diagram of a water leak detection system for explaining a method of identifying a water leak in a buried pipe according to an embodiment of the present invention. As shown in the figure, the water leak detection system includes a hot water supply unit 8 and an infrared camera 9 attached to a water supply 21 (a water supply valve 21 located on the left side in this embodiment) connected to the buried pipe 2.
【００２１】前記温水供給ユニット８においては図２に
示すように埋設配管２内に埋設領域１の温度に対して温
度差を有する流体が供給できる。本実施例において流体
には水が使用され、埋設領域１に比べて温度が高い温水
が使用される。温水供給ユニット８は貯湯タンク８０、
ヒーター８２、電源コード８３、給湯ポンプ８４、給湯
用ホース８５及び口金８６を備える。貯湯タンク８０に
は温水が溜められ、貯湯タンク８０には水又は温水を補
給できる給水口８１が設けられる。ヒーター８２には温
度調節器が備えられ、このヒーター８２は貯湯タンク８
０に給水された水を一定の温度まで暖める、又は貯湯タ
ンク８０に溜められた温水を一定の温度に保温する。給
湯ポンプ８４は貯湯タンク８０内の温水を給湯用ホース
８５及び給水栓２１を通して埋設配管２内に供給する。
口金８６は給湯用ホース８５を給水栓２１に取り付ける
ために使用される。貯湯タンク８０内の温水は給湯ポン
プ８４によって埋設配管２内に強制的に供給される。前
記図１中、符号３５を付けた矢印は埋設配管２内に供給
された温水の流れを示す。In the hot water supply unit 8, as shown in FIG. 2, a fluid having a temperature difference with respect to the temperature of the buried region 1 can be supplied into the buried pipe 2. In this embodiment, water is used as the fluid, and hot water whose temperature is higher than that of the buried region 1 is used. The hot water supply unit 8 is a hot water storage tank 80,
The heater 82, the power cord 83, the hot water supply pump 84, the hot water supply hose 85, and the base 86 are provided. Hot water is stored in the hot water storage tank 80, and the hot water storage tank 80 is provided with a water supply port 81 for supplying water or hot water. The heater 82 is equipped with a temperature controller, and this heater 82 is the hot water storage tank 8
The water supplied to 0 is warmed to a constant temperature, or the hot water stored in the hot water storage tank 80 is kept at a constant temperature. The hot water supply pump 84 supplies the hot water in the hot water storage tank 80 into the buried pipe 2 through the hot water supply hose 85 and the water tap 21.
The base 86 is used to attach the hot water supply hose 85 to the water tap 21. The hot water in the hot water storage tank 80 is forcibly supplied into the buried pipe 2 by the hot water supply pump 84. In FIG. 1, the arrow with the reference numeral 35 indicates the flow of hot water supplied into the buried pipe 2.
【００２２】同図１中、符号３６は埋設配管２に発生し
た欠損部４において埋設配管２内から埋設領域１中に漏
れ出た漏温水である。図３に欠損部４を拡大した断面図
を示す。同図に示すように欠損部４から漏れ出た漏温水
３６は欠損部４の周囲において埋設領域１に温度変化を
もたらす。同図３には便宜的に等温線で表現した温度変
化の様子を示す。符号３６ａ、３６ｂ、３６ｃは等温線
を示す。埋設配管２内には温水が供給されているので、
欠損部４に近い等温線３６ａにおいては高い温度を示
す。欠損部４から遠い等温線３６ｃにおいては低い温度
を示す。In FIG. 1, reference numeral 36 is hot water leaking from the buried pipe 2 into the buried region 1 at the defective portion 4 generated in the buried pipe 2. FIG. 3 shows an enlarged sectional view of the defective portion 4. As shown in the figure, the leaked hot water 36 leaking from the defective portion 4 causes a temperature change in the buried region 1 around the defective portion 4. FIG. 3 shows the manner of temperature change represented by an isotherm for convenience. Reference numerals 36a, 36b and 36c indicate isotherms. Since hot water is supplied into the buried pipe 2,
A high temperature is shown in the isotherm 36a near the defect portion 4. A low temperature is shown in the isotherm 36c far from the defect portion 4.
【００２３】前記赤外線カメラ９はこのような欠損部４
つまり漏水箇所における埋設領域２の局所的な温度変化
の分布を視覚的に捉えることができる。赤外線カメラ９
においてモニターが内臓されている場合には、赤外線カ
メラ９で埋設配管２の配管経路を捉えながら調査者は即
座に漏水箇所を発見し漏水箇所の位置を特定できる。赤
外線カメラ９にモニターが内臓されていない場合には赤
外線カメラ９が外部モニター（図示しない）に接続さ
れ、赤外線カメラ９が捉えた映像が外部モニターに写出
される。The infrared camera 9 has such a defective portion 4
That is, it is possible to visually grasp the distribution of the local temperature change of the buried region 2 at the water leakage location. Infrared camera 9
In the case where the monitor is built-in, the investigator can immediately discover the water leakage location and specify the position of the water leakage location while capturing the piping route of the buried piping 2 with the infrared camera 9. If the infrared camera 9 does not have a built-in monitor, the infrared camera 9 is connected to an external monitor (not shown), and the image captured by the infrared camera 9 is displayed on the external monitor.
【００２４】次に、漏水箇所の特定方法について説明す
る。まず、漏水が発生していると推定される埋設配管２
において止水弁２０が全閉され、埋設配管２が給水源か
ら切り離される。次に、温水供給ユニット８の給湯用ホ
ース８５を給水栓２１に取り付け、温水供給ユニット８
から埋設配管２に温水３５が供給される。温水３５は欠
損部４において漏温水３６として埋設領域１に漏れ出
し、埋設領域１に局所的な温度変化をもたらす。つま
り、埋設領域１においては欠損部４の真上を中心として
周囲に広がる温度分布が発生する。この温度分布は赤外
線カメラ９によって映像として捉えられ内臓モニター又
は外部モニターに写出される。埋設領域１の温度分布に
対応してモニター上では中心から周囲に向かって次第に
濃淡が変化する画像として写出されるので、調査者にお
いては最も温度の高い位置が即座に認識でき、最も温度
が高い位置が漏水箇所であるという判断が即座にでき
る。本発明者が行った検討によれば、埋設領域１に約
０. ５℃の温度分布が発生すれば赤外線カメラ９で充分
に温度分布が認識でき、漏水箇所が判定できるという結
論に達した。Next, a method of identifying a water leak location will be described. First, the buried pipe 2 which is estimated to have leaked water.
At, the water shutoff valve 20 is fully closed, and the buried pipe 2 is disconnected from the water supply source. Next, the hot water supply hose 85 of the hot water supply unit 8 is attached to the water tap 21, and the hot water supply unit 8 is attached.
The hot water 35 is supplied to the buried pipe 2 from the. The hot water 35 leaks into the buried region 1 as leaked hot water 36 at the defective portion 4 and causes a local temperature change in the buried region 1. That is, in the buried region 1, a temperature distribution that spreads around the center of the region directly above the defective portion 4 is generated. This temperature distribution is captured as an image by the infrared camera 9 and displayed on a built-in monitor or an external monitor. Corresponding to the temperature distribution of the buried area 1, the image is projected on the monitor as the density changes gradually from the center to the surroundings, so the investigator can immediately recognize the highest temperature position and the highest temperature. It is possible to immediately determine that the high position is the leak point. According to the study conducted by the present inventor, it was concluded that if a temperature distribution of about 0.5 ° C. occurs in the buried region 1, the infrared camera 9 can sufficiently recognize the temperature distribution and determine the water leakage location.
【００２５】なお、本実施例においては埋設配管２内に
温水３５が供給されたが、本発明においては漏水箇所の
特定に埋設領域１よりも温度が低い冷水が使用できる。
さらに、本発明においては、漏水箇所の特定に液体に限
らず炭酸ガスなどの気体が使用できる。In the present embodiment, the hot water 35 is supplied into the buried pipe 2, but in the present invention, cold water having a temperature lower than that of the buried area 1 can be used to identify the leak location.
Further, in the present invention, not only the liquid but also a gas such as carbon dioxide gas can be used for specifying the water leakage location.
【００２６】以上説明したように、埋設配管漏水箇所特
定方法においては、埋設配管２内に流入された温水（流
体）３５が埋設領域１に対して温度差を有するので、埋
設配管２の欠損部４から漏れ出た漏温水３６により埋設
領域１の欠損部４の周囲に温度変化が発生する。この温
度変化は赤外線カメラ９を使用すれば即座に検出でき
る。従って、漏水音で漏水箇所を特定する方法における
マイクの設置作業、埋設配管の掘削作業、配管経路の事
前調査作業等がなくなるので、漏水箇所の特定が容易に
行え、かつ確実に漏水箇所が特定できる。As described above, in the method for identifying the location of leakage of water in the buried pipe, since the hot water (fluid) 35 flowing into the buried pipe 2 has a temperature difference with respect to the buried region 1, the defective portion of the buried pipe 2 is lost. A temperature change occurs around the defective portion 4 of the buried region 1 due to the leaked hot water 36 leaking from the water. This temperature change can be immediately detected by using the infrared camera 9. Therefore, there is no need for microphone installation work, buried pipe excavation work, and pre-survey work for the piping route in the method of identifying the leak location by the sound of leak, so the leak location can be easily identified and the leak location can be identified reliably. it can.
【００２７】[0027]
【発明の効果】漏水箇所の特定が容易に行え、かつ確実
に漏水箇所が特定できる埋設配管漏水箇所特定方法が提
供できる。EFFECTS OF THE INVENTION It is possible to provide a method for identifying a location of a leak in a buried pipe in which the location of the leak can be easily identified and the location of the leak can be identified with certainty.
【図１】 本発明の一実施例に係る漏水箇所探知システ
ム構成図である。FIG. 1 is a configuration diagram of a water leak location detection system according to an embodiment of the present invention.
【図２】 前記漏水箇所探知システムの温水供給ユニッ
トの構成図である。FIG. 2 is a configuration diagram of a hot water supply unit of the water leak detection system.
【図３】 漏水箇所の拡大断面図である。FIG. 3 is an enlarged cross-sectional view of a water leak location.
【図４】 従来の漏水箇所探知システム構成図である。FIG. 4 is a configuration diagram of a conventional water leakage location detection system.
【図５】 漏水箇所の拡大断面図である。FIG. 5 is an enlarged cross-sectional view of a water leak location.
【図６】 従来の他の漏水箇所探知システム構成図であ
る。FIG. 6 is a configuration diagram of another conventional water leak location detection system.
１ 埋設領域、２ 埋設配管、４ 欠損部、８ 温水供
給ユニット、９ 赤外線カメラ、２０ 止水弁、２１
給水栓、３５ 温水、３６ 漏温水、８０ 貯湯タン
ク、８２ ヒーター、８４ 給湯ポンプ、８５ 給湯用
ホース、８６ 口金。1 buried area, 2 buried pipe, 4 defective part, 8 hot water supply unit, 9 infrared camera, 20 water stop valve, 21
Water tap, 35 hot water, 36 hot water leak, 80 hot water storage tank, 82 heater, 84 hot water pump, 85 hot water supply hose, 86 mouthpiece.
Claims (3)
領域に対して温度差を有する流体を流入し、 前記配管の欠損箇所から漏れ出た流体による前記埋設領
域の局部的な温度変化が発生する箇所を検出し、 前記検出結果に基づき前記配管の欠損箇所を特定する、
ことを特徴とする埋設配管漏水箇所特定方法。1. A local temperature change in the buried region caused by a fluid leaking from a defective portion of the pipe when a fluid having a temperature difference from the buried region flows into the pipe buried in the buried region. Detects a location that occurs, and identifies the defective portion of the pipe based on the detection result,
A method for identifying a location of a leak in a buried pipe, which is characterized by the following.
箇所特定方法において、 前記埋設領域の温度変化の検出には赤外線カメラが使用
されることを特徴とする埋設配管漏水箇所特定方法。2. The method for identifying a leak location of a buried pipe according to claim 1, wherein an infrared camera is used to detect a temperature change in the buried area.
箇所特定方法において、 前記流体には埋設領域の温度よりも温度が高い温水が使
用されることを特徴とする埋設配管漏水箇所特定方法。3. The method for identifying a leak location of a buried pipe according to claim 1, wherein hot water having a temperature higher than the temperature of the buried area is used as the fluid. .
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15795A JPH08184398A (en) | 1995-01-05 | 1995-01-05 | Embedded piping leakage spot specifying method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15795A JPH08184398A (en) | 1995-01-05 | 1995-01-05 | Embedded piping leakage spot specifying method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH08184398A true JPH08184398A (en) | 1996-07-16 |
Family
ID=11466211
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP15795A Pending JPH08184398A (en) | 1995-01-05 | 1995-01-05 | Embedded piping leakage spot specifying method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH08184398A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2013190229A (en) * | 2012-03-12 | 2013-09-26 | Chugoku Electric Power Co Inc:The | Apparatus and method for tube leak inspection |
| JP2018044862A (en) * | 2016-09-14 | 2018-03-22 | 水研テック株式会社 | Water leakage point detection device for water piping |
| JP2018087733A (en) * | 2016-11-29 | 2018-06-07 | 雄 尾▲崎▼ | Leakage site detection method of water supply pipeline and instrument used therefor |
| WO2018122810A1 (en) * | 2016-12-30 | 2018-07-05 | 同济大学 | Method for detecting leakage of underground pipe rack based on dynamic infrared thermogram processing |
| KR20210130985A (en) * | 2020-04-23 | 2021-11-02 | 이석규 | Apparatus for detecting water leakage |
-
1995
- 1995-01-05 JP JP15795A patent/JPH08184398A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2013190229A (en) * | 2012-03-12 | 2013-09-26 | Chugoku Electric Power Co Inc:The | Apparatus and method for tube leak inspection |
| JP2018044862A (en) * | 2016-09-14 | 2018-03-22 | 水研テック株式会社 | Water leakage point detection device for water piping |
| JP2018087733A (en) * | 2016-11-29 | 2018-06-07 | 雄 尾▲崎▼ | Leakage site detection method of water supply pipeline and instrument used therefor |
| WO2018122810A1 (en) * | 2016-12-30 | 2018-07-05 | 同济大学 | Method for detecting leakage of underground pipe rack based on dynamic infrared thermogram processing |
| KR20210130985A (en) * | 2020-04-23 | 2021-11-02 | 이석규 | Apparatus for detecting water leakage |
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