JPH0221735B2 - - Google Patents
Info
- Publication number
- JPH0221735B2 JPH0221735B2 JP58021813A JP2181383A JPH0221735B2 JP H0221735 B2 JPH0221735 B2 JP H0221735B2 JP 58021813 A JP58021813 A JP 58021813A JP 2181383 A JP2181383 A JP 2181383A JP H0221735 B2 JPH0221735 B2 JP H0221735B2
- Authority
- JP
- Japan
- Prior art keywords
- water
- piping system
- glass tube
- valve
- water level
- 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
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M3/00—Investigating fluid-tightness of structures
- G01M3/02—Investigating fluid-tightness of structures by using fluid or vacuum
- G01M3/26—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors
- G01M3/28—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors for pipes, cables or tubes; for pipe joints or seals; for valves ; for welds
- G01M3/2807—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors for pipes, cables or tubes; for pipe joints or seals; for valves ; for welds for pipes
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Examining Or Testing Airtightness (AREA)
Description
【発明の詳細な説明】
本発明は微量漏水試験方法に関する。例えば、
建物を竣工した際、器具接続部での漏れ検査を行
なう必要があるし、又古い建物にあつても定期的
に配管系の水漏れのチエツクをする必要がある。
本発明は主にこのような場合に好適するものであ
る。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for testing trace water leakage. for example,
When a building is completed, it is necessary to check for leaks at appliance connections, and even in older buildings, it is necessary to periodically check for water leaks in the piping system.
The present invention is mainly suitable for such cases.
従来、このような建物の漏水試験は、第１図に
示すように手動式圧力ポンプ又は給水ポンプ１と
圧力計２とを組合せた漏水試験器を、チエツクし
ようとする配管系３の端末に接続し、配管系３の
他端３ａをプラグ止めした状態で、仮設給水バル
ブ４から送られる水をポンプ１にて加圧して配管
系３に封じ込め、しかる後圧力計２の指示値の時
間的変化をみることによつて行なつていた。 Conventionally, water leakage tests for such buildings have been carried out by connecting a water leakage tester, which is a combination of a manual pressure pump or a water supply pump 1 and a pressure gauge 2, to the terminal of the piping system 3 to be checked, as shown in Figure 1. Then, with the other end 3a of the piping system 3 plugged, the water sent from the temporary water supply valve 4 is pressurized by the pump 1 and sealed in the piping system 3, and then the time change in the indicated value of the pressure gauge 2 is confirmed. This was done by looking at the
しかしながら、かかる試験方法では、漏水試験
装置のセツトをするのに長時間を要するし、しか
も、圧力計の応答性及び精度が悪くて、器具接続
部等に生じるいわゆる泣き漏水といわれる微少な
漏水は確認することができないという欠点があ
る。 However, with this test method, it takes a long time to set up the water leak test equipment, and the pressure gauge has poor responsiveness and accuracy, so that minute water leaks, so-called water leaks, that occur at equipment connections, etc. The disadvantage is that it cannot be confirmed.
そこで本発明は、短時間にしかも微少な漏れを
も検出することのできる微量漏水試験方法を提供
するものである。 Therefore, the present invention provides a trace water leak testing method that can detect even minute leaks in a short time.
以下、図面に基づき本発明の一実施例を説明す
る。第２図は漏水試験装置を示し、図中、１１，
１２は複数の支持棒１３…によつて上下に一定間
隔おいて設けられた支持板で、下側の支持板１１
にはエヤータンク１４が設けられ、上側の支持板
１２にはエヤー抜き１５が取付けられている。こ
のエヤー抜き１５には微量調整バルブ１６が連設
され、該バルブ１６と前記エヤータンク１４とに
ガラス管１７の両端開口部がコネクタ１８，１８
を介して気密性良く連設されている。一方、前記
エヤータンク１４の下部には接続用バルブ１９が
連設されている。 Hereinafter, one embodiment of the present invention will be described based on the drawings. Figure 2 shows a water leak test device, and in the figure, 11,
Reference numeral 12 denotes a support plate provided vertically at regular intervals by a plurality of support rods 13, and the lower support plate 11
is provided with an air tank 14, and an air vent 15 is attached to the upper support plate 12. A fine adjustment valve 16 is connected to the air vent 15, and both end openings of a glass tube 17 are connected to the valve 16 and the air tank 14 through connectors 18, 18.
They are connected with good airtightness through the On the other hand, a connection valve 19 is connected to the lower part of the air tank 14.
前記微量調整バルブ１６は、操作によつてガラ
ス管１７の上端開口部を閉止したり、該開口部か
ら抜く空気の量を微かに調整したりできるもの
で、漏水試験を行なう際、ガラス管１７上に水位
を位置させるために使用される。つまり、接続用
バルブ１９を被試験配管系に接続した場合、高架
タンクよりの水頭圧が低く、そのため水位が例え
ばエヤータンク１４内に位置しているとすると、
水位の変化をみることができないので、水位をガ
ラス管１７上に持ち来す必要がある。微量調整バ
ルブ１６は専らかかる必要性に対処するためのも
のである。 The fine amount adjustment valve 16 can be operated to close the upper end opening of the glass tube 17 and finely adjust the amount of air to be removed from the opening. Used to position the water level above. In other words, when the connection valve 19 is connected to the piping system under test, assuming that the water head pressure from the elevated tank is low, and therefore the water level is located in the air tank 14, for example,
Since changes in the water level cannot be seen, it is necessary to bring the water level onto the glass tube 17. Micro-adjustment valve 16 is intended solely to address such a need.
一方、エヤータンク１４をガラス管１７と接続
用バルブ１９との間に設けたのは、上記微量調整
バルブ１６の必要性とは逆に、高架タンクよりの
水頭圧が高い場合に対処するためのものである。
即ち、もしこのタンクがないと、水頭圧によつて
圧縮される空気量が少ないために、水頭圧が高い
場合その水頭圧によつて空気が圧縮されて水位が
ガラス管上端に位置してしまうこととなる。この
場合、微量調整バルブ１６では水位を下げること
はできない。従つて、水頭圧が高くても水位をガ
ラス管上の適当な高さに位置させるには圧縮され
る空気量を多く確保する必要があり、そのために
エヤータンクが必要なのである。但し、エヤータ
ンクと同様な効果は、接続用バルブ１９と被試験
配管系との間に介在するホース長を長くしたり、
或いはガラス管１７長を長くすることによつても
奏することができるので、エヤータンクは本発明
装置の必須構成要件ではない。尚、この実施例で
はエヤータンク１４の側部に食紅投入口２０を設
け、必要に応じて食紅を投入した状態で水位の観
測ができるようにしている。 On the other hand, the reason why the air tank 14 is provided between the glass tube 17 and the connection valve 19 is to cope with the case where the water head pressure from the elevated tank is high, contrary to the need for the above-mentioned fine adjustment valve 16. It is.
In other words, if this tank were not present, the amount of air compressed by the head pressure would be small, so if the head pressure was high, the air would be compressed by the head pressure and the water level would be located at the top of the glass tube. It happens. In this case, the fine adjustment valve 16 cannot lower the water level. Therefore, even if the water head pressure is high, it is necessary to secure a large amount of compressed air in order to position the water level at an appropriate height above the glass tube, and for this purpose, an air tank is necessary. However, the same effect as the air tank can be obtained by increasing the length of the hose interposed between the connection valve 19 and the piping system under test,
Alternatively, this can be achieved by increasing the length of the glass tube 17, so the air tank is not an essential component of the device of the present invention. In this embodiment, a food coloring inlet 20 is provided on the side of the air tank 14 so that the water level can be observed while food coloring is being added, if necessary.
ガラス管１７は、水位が観測できるために透明
である必要があり、また感度を高めるために内径
は細い程好ましい。しかし、あまり細いと、毛細
管現象によつて水が降りなくなるので通常は内径
2.5mmφ程度とするのが良い。本実施例では、内
径2.5mmφ、外径８mmφの強化特殊ガラスを用い
ている。 The glass tube 17 needs to be transparent so that the water level can be observed, and it is preferable that the inner diameter be as small as possible to increase sensitivity. However, if it is too thin, water will not come down due to capillary action, so the inner diameter is usually
It is best to set it to around 2.5mmφ. In this embodiment, reinforced special glass with an inner diameter of 2.5 mmφ and an outer diameter of 8 mmφ is used.
接続用バルブ１９は被試験配管系の端末に接続
するためのもので、通常はこのバルブ１９に耐圧
ホースを接続し、そのホースを配管系端末に接続
する。この実施例において接続用バルブ１９には
水量調整用コツク２１とドレンコツク２２とが設
けてある。 The connection valve 19 is for connecting to the terminal of the piping system under test, and normally a pressure-resistant hose is connected to this valve 19, and the hose is connected to the terminal of the piping system. In this embodiment, the connection valve 19 is provided with a water volume adjustment pot 21 and a drain pot 22.
次に第３図は上記装置を用いた微量漏水試験方
法を示したもので、次の如き順序にて行なう。先
ず高架タンク２３に主バルブ２４を介して連なる
配管系２５の端末に前記漏水試験装置の接続用バ
ルブ１９を耐圧ホース２６を介して接続する。こ
のとき配管系２５の全てのバルブ２７…を閉止し
ていると、高架タンク２３よりの水頭圧によつて
漏水試験装置内の空気が圧縮され、水頭圧と空気
圧とが均り合うところまで装置内の水位が上昇す
る。水位がガラス管１７上にないときは微量調整
バルブ１６を操作して圧力調整をしてガラス管１
７上まで上昇させれば良い。 Next, FIG. 3 shows a method of testing for trace water leakage using the above-mentioned apparatus, which is carried out in the following order. First, the connection valve 19 of the water leak testing device is connected via a pressure hose 26 to the terminal of a piping system 25 that is connected to the elevated tank 23 via a main valve 24 . At this time, if all the valves 27 of the piping system 25 are closed, the air inside the water leak test device is compressed by the head pressure from the elevated tank 23, and the device reaches a point where the water head pressure and air pressure are equalized. The water level inside will rise. When the water level is not above the glass tube 17, operate the micro-adjustment valve 16 to adjust the pressure.
All you have to do is raise it to above 7.
次に主にバルブ２４を閉止して、配管系２５に
水を封止する。すると、配管系２５内の水は漏水
試験装置内の圧縮空気（この空気圧は水頭圧に等
しい。）によつて加圧される。従つて、配管系２
５に漏水がなければ、配管系２５内の水量に変化
がないから前記装置内の水位は変化しないが、漏
水があると、配管系２５内の水が圧縮空気に加圧
されて押し出されるため水量が減少し、その結
果、水位が減少する。よつて、ガラス管１７上の
水位の変化を観測することによつて漏水の有無を
検知できるのである。ところで、この試験方法に
おいては配管系の漏水量は直ちにガラス管１７上
の水位の変化となつてあらわれ、しかもガラス管
１７の太さを細くすればそれだけ感度が高くなる
ので、従来検知が困難とされていた器具接続部等
に生じる微量ないわゆる泣き漏水をも短時間のう
ちに検知することができるのである。 Next, mainly the valve 24 is closed to seal off water in the piping system 25. Then, the water in the piping system 25 is pressurized by compressed air (this air pressure is equal to the water head pressure) in the water leak test device. Therefore, piping system 2
If there is no water leakage in 5, there is no change in the amount of water in the piping system 25, so the water level in the device will not change, but if there is a water leak, the water in the piping system 25 will be pressurized by the compressed air and pushed out. The amount of water decreases and, as a result, the water level decreases. Therefore, by observing changes in the water level on the glass tube 17, the presence or absence of water leakage can be detected. By the way, in this test method, the amount of water leaking from the piping system immediately appears as a change in the water level on the glass tube 17, and the thinner the glass tube 17 is, the higher the sensitivity becomes, which is difficult to detect in the past. It is possible to detect minute amounts of so-called leakage in a short period of time that occur in equipment connections that have been previously used.
以上、説明したように本発明に係る微量漏水試
験方法は、ガラス管と、その上端開口部に連設さ
れた微量調整バルブと、下端開口部に連設された
接続用バルブとを備えた漏水試験装置の接続用バ
ルブを、高架タンクに主バルブを介して連なる配
管系の端末に接続し、高架タンクよりの水頭圧に
より、前記試験装置内の空気を圧縮すると共に、
微量調整バルブにてガラス管内の水位の変化の有
無により配管系における微量な漏水の有無を検知
するようにしたものであるから、微量漏水を短時
間に検知できるのみならず、従来のように給水ポ
ンプを用いて配管系に給水する必要がないので、
漏水試験の準備に手間がからず、みた大規模な建
物或いは設備における漏水チエツクも高架タンク
の水頭圧を利用することによつて手際よく迅速に
行なうことができる等の効果がある。 As explained above, the micro water leakage test method according to the present invention includes a glass tube, a micro adjustment valve connected to the upper end opening, and a connection valve connected to the lower end opening. The connection valve of the test device is connected to the terminal of the piping system connected to the elevated tank via the main valve, and the air inside the test device is compressed by the head pressure from the elevated tank, and
Since the micro-adjustment valve detects the presence or absence of a small amount of water leakage in the piping system based on the presence or absence of a change in the water level in the glass tube, it is not only possible to detect a small amount of water leakage in a short period of time, but also to prevent water supply from occurring as before. Since there is no need to use a pump to supply water to the piping system,
Preparation for water leakage tests does not require much time, and water leakage checks in large-scale buildings or facilities can be carried out quickly and efficiently by using the head pressure of an elevated tank.
第１図は従来の漏水試験装置及びその装置を用
いた漏水試験方法を示す図、第２図と第３図は本
発明の一実施例を示し、第２図は漏水試験装置の
構成図、第３図はその装置を用いた試験方法を示
す図である。
１６……微量調整バルブ、１７……ガラス管、
１９……接続用バルブ、２３……高架タンク、２
４……主バルブ、２５……配管系。
Fig. 1 is a diagram showing a conventional water leakage testing device and a water leakage testing method using the device, Figs. 2 and 3 show an embodiment of the present invention, and Fig. 2 is a configuration diagram of the water leakage testing device; FIG. 3 is a diagram showing a test method using the device. 16...Minor adjustment valve, 17...Glass tube,
19... Connection valve, 23... Elevated tank, 2
4...Main valve, 25...Piping system.
Claims (1)
量調整バルブと、下端開口部に連設された接続用
バルブとを備えた漏水試験装置の前記接続用バル
ブを、高架タンクに主バルブを介して連なる配管
系の端末に接続し、高架タンクよりの水頭圧によ
り前記試験装置内の空気を圧縮すると共に、微量
調整バルブにてガラス管内の水位を調整し、しか
る後主バルブを閉止し、ガラス管内の水位の変化
の有無により配管系における微量な漏水の有無を
検知するようにしたことを特徴とする微量漏水試
験方法。1. The connection valve of a water leak test device, which is equipped with a glass tube, a micro-adjustment valve connected to its upper end opening, and a connection valve connected to its lower end opening, is connected to the elevated tank by connecting the main valve to the elevated tank. Connected to the end of the piping system via the elevated tank, compressing the air inside the test device using the head pressure from the elevated tank, adjusting the water level in the glass tube with a micro-adjustment valve, and then closing the main valve, A trace water leak testing method characterized in that the presence or absence of trace water leakage in a piping system is detected by the presence or absence of a change in the water level within the glass tube.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2181383A JPS59147235A (en) | 1983-02-12 | 1983-02-12 | Water leak testing apparatus and testing method of minute amount of leaked water by using the same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2181383A JPS59147235A (en) | 1983-02-12 | 1983-02-12 | Water leak testing apparatus and testing method of minute amount of leaked water by using the same |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS59147235A JPS59147235A (en) | 1984-08-23 |
| JPH0221735B2 true JPH0221735B2 (en) | 1990-05-16 |
Family
ID=12065496
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2181383A Granted JPS59147235A (en) | 1983-02-12 | 1983-02-12 | Water leak testing apparatus and testing method of minute amount of leaked water by using the same |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS59147235A (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4432473C2 (en) * | 1994-09-13 | 1999-02-11 | Rothenberger Werkzeuge Ag | Method and device for leak testing pipelines, in particular sewage pipes |
| CN102865979B (en) * | 2012-09-14 | 2015-03-04 | 四川制动科技股份有限公司 | Testing system and testing method for air tightness of main valve body component of 120 valve |
| JP7409617B2 (en) * | 2022-03-25 | 2024-01-09 | 株式会社フジキン | Leak detection mechanism |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5563733A (en) * | 1978-11-09 | 1980-05-14 | Nippon Kokan Kk <Nkk> | Method of measuring leaked water amount |
-
1983
- 1983-02-12 JP JP2181383A patent/JPS59147235A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS59147235A (en) | 1984-08-23 |
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