JP2002250668A - Liquid leak detector - Google Patents
Liquid leak detectorInfo
- Publication number
- JP2002250668A JP2002250668A JP2001050711A JP2001050711A JP2002250668A JP 2002250668 A JP2002250668 A JP 2002250668A JP 2001050711 A JP2001050711 A JP 2001050711A JP 2001050711 A JP2001050711 A JP 2001050711A JP 2002250668 A JP2002250668 A JP 2002250668A
- Authority
- JP
- Japan
- Prior art keywords
- liquid
- valve
- chamber
- variable volume
- volume chamber
- 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.)
- Granted
Links
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A20/00—Water conservation; Efficient water supply; Efficient water use
Landscapes
- Measuring Volume Flow (AREA)
- Examining Or Testing Airtightness (AREA)
- Pipeline Systems (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、管路を流れる液体
の漏れを検出する装置に関し、特に洗面所や温水器等の
漏れに対処するための液漏れ検出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 device for detecting a leak of liquid flowing through a pipeline, and more particularly to a device for detecting a leak in a washroom or a water heater.
【０００２】[0002]
【従来の技術】一般家庭における水道関係の水漏れは、
水道使用量の検針で発見される例が多い。これは、例え
ば洗面所の水漏れはボールタップやフロートの不良が原
因のため、微量の間は判断が難しいこと、また太陽熱温
水器や電気温水器の場合には設置場所が屋根の上である
とか、家屋の裏など目立ちにくいことなどが原因として
挙げられる。2. Description of the Related Art Water leaks related to water supply in general households are as follows.
Many cases are found by meter reading of water consumption. This is because, for example, a leak in the washroom is difficult due to a defective ball tap or float, so it is difficult to judge a small amount.In the case of a solar water heater or an electric water heater, the installation location is on the roof. And inconspicuousness such as behind a house.
【０００３】しかしながら、水道使用料の検針によって
水漏れが発見されるとは限らない。水道メーターが水の
流れを関知できるのは毎分約９０ｃｃ以上の流れがある
場合とされているからである。このため水道メーターが
感知できないそれよりも微量の水漏れは発見するのも容
易ではなく、見逃されているのが実情である。市場に
は、高感度のセンサーにより水道の利用状況をチェック
し水漏れを関知する機器も出回っているようではある
が、設置が容易でなくかつ高価格であり普及するに至っ
ていない。[0003] However, water leaks are not always found by meter reading of the water usage fee. The reason why the water meter can detect the flow of water is that there is a flow of about 90 cc or more per minute. For this reason, it is not easy to find a small amount of water leak that the water meter cannot detect, and it is a fact that it is overlooked. It seems that there are devices on the market that use high-sensitivity sensors to check water usage and to detect water leaks, but they are not easy to install, are expensive, and have not yet become widespread.
【０００４】[0004]
【発明が解決しようとする課題】本発明は前記の点に着
目してなされたもので、その課題は例えば水道関係の少
量の水漏れなどを早く発見することができるとともに、
配管設備へ容易に設置することができる、比較的安価な
液漏れ検出装置を提供することにある。DISCLOSURE OF THE INVENTION The present invention has been made in view of the above points, and its object is to quickly find, for example, a small amount of water leakage related to water supply.
It is an object of the present invention to provide a relatively inexpensive liquid leakage detection device that can be easily installed in piping equipment.
【０００５】[0005]
【課題を解決するための手段】前記の課題を解決するた
め本発明は、液圧に対抗する付勢力によって閉弁可能で
あり、液圧の増大によって開弁可能な開閉弁を装置本体
に設け、開閉弁の下流に通じる側室を装置本体に設ける
とともに、開閉弁の上流に通じる可変容積室を側室内に
設け、液漏れを原因とする可変容積室の変形によって、
液漏れ報知部を制御するスイッチを作動させるという手
段を講じたものである。According to the present invention, there is provided an opening / closing valve which can be closed by an urging force opposing a hydraulic pressure and which can be opened by increasing the hydraulic pressure. A side chamber communicating with the downstream of the on-off valve is provided in the main body of the apparatus, and a variable volume chamber communicating with the upstream of the on-off valve is provided in the side chamber.
A means for operating a switch for controlling the liquid leak notification unit is provided.
【０００６】[0006]
【発明の実施の形態】本発明に係る液漏れ検出装置は、
水道管などの管路を流れる液体の漏れを検出するための
ものである。従って、装置本体が管路に具備される。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A liquid leak detecting device according to the present invention comprises:
This is for detecting leakage of liquid flowing through a pipe such as a water pipe. Therefore, the apparatus main body is provided in the pipeline.
【０００７】その装置本体は、管路を流れる液体の液圧
に対抗する付勢力によって開弁可能であり、かつ液圧の
増大によって開弁可能な開閉弁を具備する。開閉弁は、
例えば水栓が開かれると水が蛇口などから流れ出る勢い
に応じて開度を変えることが望ましい。この開閉弁は管
路に一方向の流れが生じたときに差圧を作るもので常閉
のいわゆる差圧弁といって良い。The main body of the apparatus is provided with an on-off valve that can be opened by an urging force opposing the liquid pressure of the liquid flowing through the pipeline and that can be opened by increasing the liquid pressure. On-off valve
For example, when the faucet is opened, it is desirable to change the opening according to the momentum of water flowing out of the faucet or the like. This on-off valve generates a differential pressure when a one-way flow occurs in the pipeline, and may be called a normally closed so-called differential pressure valve.
【０００８】この開閉弁の上流には、管路の液圧と関係
なく略一定の流量を流すための定流量弁を配置すること
ができる。定流量弁は、本装置が一般家庭の水道に適用
されるような場合には不可欠に近い要素である。しか
し、常に略一定の範囲の圧力が作用する管路の場合には
不可欠ではない。A constant flow valve for flowing a substantially constant flow rate irrespective of the hydraulic pressure of the pipeline can be arranged upstream of the on-off valve. The constant flow valve is an almost indispensable element when the present apparatus is applied to the water supply of a general household. However, this is not essential in the case of a pipeline in which a substantially constant range of pressure always acts.
【０００９】装置本体には側室を設け、側室は少なくと
も装置本体の開閉弁の下流域と通じるようにする。これ
に対して、開閉弁の上流は、少なくとも可変容積室に通
じており、可変容積室は側室内に設けられている。即ち
開閉弁の下流側の低圧とが側室に、上流側の高圧が可変
容積室に作用する。従って側室内の圧力と可変容積室の
圧力とは均衡するように作用するので、液漏れがあれば
差圧として検出することができる。A side chamber is provided in the apparatus main body, and the side chamber communicates with at least a downstream area of the on-off valve of the apparatus main body. In contrast, at least the upstream side of the on-off valve communicates with the variable volume chamber, and the variable volume chamber is provided in the side chamber. That is, the low pressure on the downstream side of the on-off valve acts on the side chamber, and the high pressure on the upstream side acts on the variable volume chamber. Therefore, the pressure in the side chamber and the pressure in the variable volume chamber act so as to be balanced, so that any liquid leakage can be detected as a differential pressure.
【００１０】この可変容積室の液漏れを原因とする変形
によって、液漏れ報知部を制御するスイッチを作動させ
る。つまり可変容積室は変形を取り出すための手段であ
り、例えばダイヤフラムなどと通称されている可撓膜に
よって構成される。可撓膜以外では、ピストンシリンダ
装置の構造を持ったものも可変容積室に該当する。つま
り変形は、拡大と縮小を含む。The switch for controlling the liquid leakage notifying section is operated by the deformation caused by the liquid leakage in the variable volume chamber. That is, the variable volume chamber is a means for taking out the deformation, and is constituted by, for example, a flexible film commonly called a diaphragm or the like. Other than the flexible membrane, those having the structure of the piston cylinder device also correspond to the variable volume chamber. That is, the deformation includes enlargement and reduction.
【００１１】液漏れ報知部は、電球やダイオードなどの
発光、又は音や振動などを報知手段として使用すること
ができる。この報知手段によって液漏れが第３者に報じ
られその結果、液漏れが発見され必要な修理がなされる
ことになる。The liquid leak notification unit can use light emission of a light bulb or a diode, or sound or vibration as a notification means. A leak is reported to a third party by the notification means. As a result, the leak is found and necessary repairs are made.
【００１２】[0012]
【実施例】以下図示の実施例を参照して本発明をより詳
細に説明する。図１、図２は本発明の実施例１に関する
もので、本発明に係る液漏れ検出装置１０を液体が流れ
る管路に装置するため装置本体１１を具備する。装置本
体１１は、上流側と下流側の各部材１２、１３により管
路に接続され、上流側には液圧に関係なく一定の液量を
流す定流量弁１４が配備されており、また上流側と下流
側とは隔壁１５により遮断されていて、この隔壁部分の
上流側と下流側との間には、開閉弁１６が配備されてい
る。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described in more detail with reference to the illustrated embodiments. 1 and 2 relate to a first embodiment of the present invention, and include a device main body 11 for mounting a liquid leak detecting device 10 according to the present invention in a conduit through which a liquid flows. The apparatus main body 11 is connected to the pipeline by members 12 and 13 on the upstream side and the downstream side, and a constant flow valve 14 for flowing a constant amount of liquid regardless of the liquid pressure is provided on the upstream side. The side and the downstream side are shut off by a partition wall 15, and an on-off valve 16 is provided between the upstream side and the downstream side of the partition wall portion.
【００１３】開閉弁１６は、流れに向かって弾性体１７
により付勢された弁体１８と、それを受け止める弁座１
９とを有し、上流側から下流側への流れが発生したとき
に、両側に差圧を作る。この隔壁１５及び開閉弁１６に
よって分けられた上流側をＡ室、下流側をＢ室とを呼ぶ
ことにする。そして装置本体１１には開閉弁１６の下流
側に通じる側室２０を設ける。下流側と側室２０とは液
通路２１によって通じさせる。The on-off valve 16 is provided with an elastic body 17 toward the flow.
And the valve seat 1 receiving it
And a differential pressure is created on both sides when a flow from the upstream side to the downstream side occurs. The upstream side divided by the partition wall 15 and the on-off valve 16 is referred to as an A room, and the downstream side is referred to as a B room. The apparatus main body 11 is provided with a side chamber 20 communicating with the downstream side of the on-off valve 16. The downstream side and the side chamber 20 are communicated by the liquid passage 21.
【００１４】さらに開閉弁１６の上流側に通じる可変容
積室２２を側室内に設ける。例示の可変容積室２２は、
一部がダイヤフラムと呼ばれる可撓膜２３によって画成
された状態にあり、側室２０の隔壁２４に接して設けら
れており、かつ上流側のＡ室と下流側のＢ室と夫々口径
の異なるポート２５、２６によって連通している。上流
側のポート２５はより大径であり、Ａ室から可変容積室
２２へ液流を取り入れる口であり、下流側のポート２６
はより小径であり、可変圧力室２２に流入した液流によ
り所要の圧力を保持しながら下流側Ｂ室へ液流を排出す
る。Further, a variable volume chamber 22 communicating with the upstream side of the on-off valve 16 is provided in the side chamber. The example variable volume chamber 22 includes:
A part of the port is defined by a flexible membrane 23 called a diaphragm, is provided in contact with the partition wall 24 of the side chamber 20, and has a different diameter from the chamber A on the upstream side and the chamber B on the downstream side. 25 and 26 communicate with each other. The upstream port 25 has a larger diameter, is a port for taking in a liquid flow from the chamber A to the variable volume chamber 22, and has a downstream port 26.
Has a smaller diameter, and discharges the liquid flow to the downstream side B chamber while maintaining a required pressure by the liquid flow flowing into the variable pressure chamber 22.
【００１５】従って可変容積室２２に必要な圧力はＡ
室、Ｂ室に通じる各ポート２５、２６の口径を変更する
ことによって得ることができ、また可変容積室２２の変
形の度合は内部の圧力によって選択することができる。
実施例１の場合、側室２０は上記条件のポート２５、２
６を有し、かつ下流側のＢ室にのみ通じているので流れ
が発生していれば可変容積室２２よりも常に低圧とな
る。Therefore, the pressure required for the variable volume chamber 22 is A
It can be obtained by changing the diameter of each of the ports 25 and 26 communicating with the chamber and the chamber B, and the degree of deformation of the variable volume chamber 22 can be selected by the internal pressure.
In the case of the first embodiment, the side chamber 20 has the ports 25, 2
6 and communicates only with the downstream B chamber, so that if the flow is generated, the pressure is always lower than that of the variable volume chamber 22.
【００１６】可変容積室２２の変形によって、液漏れ報
知部３１を制御するスイッチ３０が作動させられる。ス
イッチ３０は接点２７と、可変容積室２２の変形によっ
て接点２７から離れた位置から接点２７に近い位置まで
変位可能な変位部材２８と、変位部材２８をガイドする
ガイド部材２９とを有し、変位部材２８を永久磁石で形
成し、接点２７をその磁力で接触し導通する材料を用い
て形成することによって開閉可能とした構成を有する。By the deformation of the variable volume chamber 22, the switch 30 for controlling the liquid leak notification unit 31 is operated. The switch 30 has a contact 27, a displacement member 28 that can be displaced from a position away from the contact 27 by deformation of the variable volume chamber 22 to a position near the contact 27, and a guide member 29 that guides the displacement member 28. The member 28 is made of a permanent magnet, and the contact 27 is made of a material that makes contact and conducts with the magnetic force so that it can be opened and closed.
【００１７】実施例１の作動原理を説明すると、Ａ室よ
りＢ室への液流が停止しているときには、両室Ａ、Ｂ及
び側室２２は等圧であり、可変容積室２２の容積は零
（変化しない。）のため、スイッチ３０は切り換らず液
漏れ報知部３１は作動しない（図１）。つまり同部３１
が電球等の場合には点灯せず、同部３１が音の場合には
発音しないので異常のないことが分かる。なお、液漏れ
報知部３１を常時点灯型に構成した場合には、作動中点
灯して異常のないことを報ずることになる。The principle of operation of the first embodiment will be described. When the liquid flow from the chamber A to the chamber B is stopped, the pressures in the two chambers A and B and the side chamber 22 are equal, and the volume of the variable volume chamber 22 is Since it is zero (no change), the switch 30 does not switch and the liquid leak notification unit 31 does not operate (FIG. 1). That is, the same part 31
Is not lit when is a light bulb or the like, and does not sound when the part 31 is sound, indicating that there is no abnormality. In addition, when the liquid leak notification unit 31 is configured to be always lit, it is lit during operation to report that there is no abnormality.
【００１８】図外の水栓などが開かれ、管路に液流が発
生すると、図２（ａ）に示すように開閉弁１６が開き、
差圧が生じて（Ａ＞Ｂ）、ポート２５から可変容積室２
２に流液が流入し、可撓膜２３が膨らむので、変位部材
２８が押し上げられ、スイッチ３０がオンとなる。従っ
て液漏れ報知部３１が作動し、使用中であること報ず
る。When a faucet (not shown) is opened and a liquid flow is generated in the pipeline, the on-off valve 16 is opened as shown in FIG.
A differential pressure is generated (A> B), and the variable volume chamber 2
Since the flowing liquid flows into 2 and the flexible film 23 expands, the displacement member 28 is pushed up and the switch 30 is turned on. Accordingly, the liquid leak notification unit 31 is activated to report that the liquid is being used.
【００１９】開閉弁１６を開くほどの流圧を伴わない微
量の液流が発生している場合（図２（ｂ））、その流圧
がポート２５から可変容積室２２に作用して可撓膜２３
を変形させた時には差圧を生じ、スイッチ３０を切り換
えることになる。つまり液漏れ報知部３１が作動して、
液漏れが生じていることを報ずることになる。When a small amount of liquid flow is generated without a fluid pressure enough to open the on-off valve 16 (FIG. 2 (b)), the fluid pressure acts on the variable volume chamber 22 from the port 25 to flexibly. Membrane 23
Is deformed, a differential pressure is generated, and the switch 30 is switched. That is, the liquid leak notification unit 31 operates,
This will report that a leak has occurred.
【００２０】図３に実施例２を示す。これは、実施例１
のものの側室が下流側にのみ通じるものであったのに対
して、上流側のＡ室及び下流側のＢ室の双方に通じる構
成としたもので、上流側のＡ室に通じる液通路３２は開
閉可能とされている。液通路３２にはニードル弁３３が
設けられており、ニードル弁３３は小ポート３４におい
て上流側液通路３２を開閉可能であり、かつ液流入量を
調節可能である。また小ポート３４の清掃をニードル弁
３３が行う。FIG. 3 shows a second embodiment. This is the first embodiment
Although the side chamber of the above-mentioned one communicates only with the downstream side, the side chamber communicates with both the upstream A room and the downstream B room, and the liquid passage 32 which communicates with the upstream A room is It can be opened and closed. A needle valve 33 is provided in the liquid passage 32, and the needle valve 33 can open and close the upstream liquid passage 32 at a small port 34, and can adjust a liquid inflow amount. The small port 34 is cleaned by the needle valve 33.
【００２１】また実施例２では、可変容積室２２に通じ
るポートとして上流側のポート３５のみが設けられる。
実施例２の場合、側室上流側ポート３４は側室２０の内
圧を増大させないために設けられており、最も小径に設
定され、下流側ポート３６となる液通路２１の下流開口
部も側室２０の内圧を増大させないために最も大径に設
けられる。可変容積室２２のポート３５はそれらによっ
て得られる可撓膜２３の膨張性を考慮して決定する。他
の構成は実施例１の場合と同様で良いので符号を援用
し、詳細な説明は省略する。In the second embodiment, only the upstream port 35 is provided as a port leading to the variable volume chamber 22.
In the case of the second embodiment, the side chamber upstream side port 34 is provided in order not to increase the internal pressure of the side chamber 20, and is set to the smallest diameter, and the downstream opening of the liquid passage 21 which becomes the downstream side port 36 also has the internal pressure of the side chamber 20. Is provided with the largest diameter so as not to increase the diameter. The port 35 of the variable volume chamber 22 is determined in consideration of the expandability of the flexible membrane 23 obtained thereby. Since other configurations may be the same as those in the first embodiment, reference numerals are used, and detailed description is omitted.
【００２２】実施例２の場合も液流が停止しているとき
は、Ａ室、Ｂ室及び側室２０が相互に連通しているため
同圧であり、液漏れ報知部３１は作動しない（図３）。
そして、使用時に液流が発生し差圧が生じると、開閉弁
１６が開き（図４（ａ））、可変容積室２２が変形し、
スイッチ３０がオンとなって液漏れ報知部３１が作動
し、使用中であることを報ずる。或いは使用中であるこ
とが分かる。Also in the case of the second embodiment, when the liquid flow is stopped, the chamber A, the chamber B and the side chamber 20 are in communication with each other and have the same pressure, and the liquid leak notification unit 31 does not operate (FIG. 3).
Then, when a liquid flow occurs during use and a differential pressure is generated, the on-off valve 16 opens (FIG. 4A), and the variable volume chamber 22 is deformed,
When the switch 30 is turned on, the liquid leak notification unit 31 operates to report that the liquid is being used. Or it turns out that it is in use.
【００２３】液漏れが生じたとき、開閉弁１６が閉じて
いても、液流は小ポート３４から側室２０に流入し、下
流側ポート３６から流出するので、上流側のＡ室と下流
側のＢ室との間には差圧が生ずる（図４（ｂ））。その
ため可変容積室２２は容積を増大し、スイッチ３０を切
り換えるので液漏れ報知部３１が作動し、液漏れが生じ
ていることを周囲に知らせることとなる。When a liquid leak occurs, the liquid flows into the side chamber 20 from the small port 34 and flows out from the downstream port 36 even if the on-off valve 16 is closed. A differential pressure is generated between the chamber and the chamber B (FIG. 4B). Therefore, the capacity of the variable volume chamber 22 is increased, and the switch 30 is switched, so that the liquid leakage notifying unit 31 operates to notify the surroundings of the occurrence of the liquid leakage.
【００２４】図５に実施例３を示す。これは実施例１に
おけるＡ室、Ｂ室に夫々通じるポート２５、２６を有す
る可変容積室２２と、実施例２におけるポート３４、３
６でＡ室、Ｂ室に通じる側室２０とを組み合わせた例で
ある。これによって側室２０及び可変容積室２２に気泡
の残存が起こらず、速やかに液体がゆき渡るようになる
（逆に気泡の残存が問題ならないような条件であれば、
実施例１におけるＢ室にのみ通じる側室と、Ａ室にも通
じる可変容積室とを組み合わせても、本発明の装置を構
成することができることになる。）。実施例３では、変
位部材２８に戻しばね３７を作用させ、動作の迅速性、
確実性を改善している。ばね力は可撓膜２３の作動特性
を鈍化させるおそれがあるので、弱いばねを用いる。FIG. 5 shows a third embodiment. The variable volume chamber 22 having the ports 25 and 26 communicating with the chambers A and B in the first embodiment, and the ports 34 and 3 in the second embodiment.
6 is an example in which the side chamber 20 communicating with the room A and the room B is combined. As a result, no air bubbles remain in the side chamber 20 and the variable volume chamber 22, and the liquid quickly spreads out (on the contrary, if the air bubbles do not cause a problem,
The apparatus of the present invention can also be configured by combining the side chamber that communicates only with the chamber B and the variable volume chamber that communicates with the chamber A in the first embodiment. ). In the third embodiment, the return spring 37 is acted on the displacement member 28, so that the operation can be performed quickly.
Improves certainty. Since the spring force may degrade the operation characteristics of the flexible film 23, a weak spring is used.
【００２５】実施例３の場合他の構成は実施例１又は２
と同じで良く、検出動作も実施例１及び２と同様である
が、より安定なものとなる。また液流が停止したとき
に、スイッチ３０がオフとなるまでの応答性も早くなる
などの特徴が発揮される。In the case of the third embodiment, the other structure is the same as that of the first or second embodiment.
And the detection operation is the same as in the first and second embodiments, but becomes more stable. Further, when the liquid flow is stopped, characteristics such as quicker response until the switch 30 is turned off are exhibited.
【００２６】このように本発明の装置によれば、開閉弁
１６より上流側と下流側との圧力差により可変容積室２
２を変形させ、液漏れを検知することができるが、その
感度は可撓膜２３等可変容積室２２を構成している部材
の圧力変化に対する応答性による。本発明の実施例１、
２に示したダイヤフラム膜（２３）の場合、特別の材料
を用いなくても毎分約５０ｃｃの水の流れを感知するこ
とができた。これは、毎分約９０ｃｃが計測流量の下限
とされている水道メーターを大きく上回るものである。As described above, according to the apparatus of the present invention, the pressure difference between the upstream side and the downstream side of the on-off valve
2, the liquid leakage can be detected, but the sensitivity depends on the responsiveness to the pressure change of the member constituting the variable volume chamber 22, such as the flexible membrane 23. Example 1 of the present invention,
In the case of the diaphragm film (23) shown in FIG. 2, a flow of water of about 50 cc / min could be detected without using any special material. This is much higher than the water meter, where the lower limit of the measured flow rate is about 90 cc per minute.
【００２７】[0027]
【発明の効果】本発明は以上の如く構成されかつ作用す
るものであるから、配管設備への設置が容易であり、特
別の材料や加工を必要とせずに製品化されるので、比較
的安価に提供され、特に一般家庭において、洗面所や太
陽熱温水器、電気温水器等への水道配管に生ずる漏水を
迅速に把握し、修理を実施することができるので、配管
系及び上記機器各部の漏れによる被害を未然に防ぎかつ
また水道料金の無駄な支払いも防止される等顕著な効果
を奏する。Since the present invention is constructed and operates as described above, it can be easily installed in piping equipment, and can be manufactured without special materials or processing, so that it is relatively inexpensive. In particular, in general households, it is possible to quickly grasp water leaks that occur in water pipes to washrooms, solar water heaters, electric water heaters, etc., and carry out repairs. It has remarkable effects such as prevention of damage caused by water and wasteful payment of water charges.
【図１】本発明に係る実施例１の液漏れ防止装置を示す
断面図。FIG. 1 is a sectional view showing a liquid leakage prevention device according to a first embodiment of the present invention.
【図２】（ａ）同じく正常使用状態を示す断面図。 （ｂ）同じく液漏れ状態を示す断面図。FIG. 2A is a cross-sectional view showing a normal use state. (B) Sectional drawing which shows the liquid leak state similarly.
【図３】本発明の実施例２を示す断面図。FIG. 3 is a sectional view showing a second embodiment of the present invention.
【図４】（ａ）同上の正常使用状態を示す断面図。 （ｂ）同じく液漏れ状態を示す断面図。FIG. 4A is a sectional view showing a normal use state of the above. (B) Sectional drawing which shows the liquid leak state similarly.
【図５】本発明の実施例３を示す断面図。FIG. 5 is a sectional view showing a third embodiment of the present invention.
１０ 液漏れ検出装置 １１ 装置本体 １６ 開閉弁 ２０ 側室 ２１ 液通路 ２２ 可変容積室 ２５、２６、３５、３６ ポート ３０ スイッチ ３１ 液漏れ報知部 DESCRIPTION OF SYMBOLS 10 Liquid leak detection apparatus 11 Main body 16 On-off valve 20 Side chamber 21 Liquid passage 22 Variable volume chamber 25, 26, 35, 36 Port 30 Switch 31 Liquid leak notification part
Claims (4)
であって、液圧に対抗する付勢力によって閉弁可能であ
り、液圧の増大によって開弁可能な開閉弁を装置本体に
設け、開閉弁の下流に通じる側室を装置本体に設けると
ともに、開閉弁の上流に通じる可変容積室を側室内に設
け、液漏れを原因とする可変容積室の変形によって、液
漏れ報知部を制御するスイッチを作動させるようにした
液漏れ検出装置。An apparatus for detecting leakage of a liquid flowing through a pipeline, wherein an on-off valve that can be closed by an urging force opposing a hydraulic pressure and that can be opened by an increase in the hydraulic pressure is provided in a main body of the apparatus. A side chamber communicating with the downstream of the on-off valve is provided in the apparatus body, and a variable volume chamber communicating with the upstream of the on-off valve is provided in the side chamber, and the liquid leak notification unit is controlled by deformation of the variable volume chamber due to liquid leakage. A liquid leak detector that operates a switch.
によって構成されている請求項１記載の液漏れ検出装
置。2. The liquid leak detecting device according to claim 1, wherein the variable volume chamber is constituted by a flexible film stretched in the side chamber.
変化し、磁石の位置変化によってリードスイッチが開閉
可能となる請求項１又は２記載の液漏れ検出装置。3. The liquid leakage detecting device according to claim 1, wherein the position of the magnet is changed by the deformation of the variable volume chamber, and the reed switch can be opened and closed by the change in the position of the magnet.
無関係に略一定の流量を流す定流量弁を配置した、請求
項１ないし３のいずれかに記載の液漏れ検出装置。4. The liquid leakage detecting device according to claim 1, wherein a constant flow valve for flowing a substantially constant flow rate irrespective of the magnitude of the hydraulic pressure is disposed in a pipe upstream of the on-off valve. .
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001050711A JP3645493B2 (en) | 2001-02-26 | 2001-02-26 | Liquid leak detection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001050711A JP3645493B2 (en) | 2001-02-26 | 2001-02-26 | Liquid leak detection device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2002250668A true JP2002250668A (en) | 2002-09-06 |
| JP3645493B2 JP3645493B2 (en) | 2005-05-11 |
Family
ID=18911628
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2001050711A Expired - Fee Related JP3645493B2 (en) | 2001-02-26 | 2001-02-26 | Liquid leak detection device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3645493B2 (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2890718A1 (en) * | 2005-09-13 | 2007-03-16 | Prodecfu Sarl | Fluid e.g. gas or liquid, flow control valve e.g. solenoid valve, for e.g. allowing fluid flow, has blower that detects leakage of fluid downstream movable valve and associated to chamber and bypass, where blower is integrated to valve |
| JP2009156839A (en) * | 2007-12-28 | 2009-07-16 | Maezawa Kyuso Industries Co Ltd | Water leakage detecting method of water supply line, and water shut off valve with water leakage detecting function |
| KR20180097862A (en) * | 2017-02-24 | 2018-09-03 | 이동민 | Leak sensor assembly |
| WO2019050148A1 (en) * | 2017-09-05 | 2019-03-14 | 이동민 | Leak-detecting sensor assembly |
-
2001
- 2001-02-26 JP JP2001050711A patent/JP3645493B2/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2890718A1 (en) * | 2005-09-13 | 2007-03-16 | Prodecfu Sarl | Fluid e.g. gas or liquid, flow control valve e.g. solenoid valve, for e.g. allowing fluid flow, has blower that detects leakage of fluid downstream movable valve and associated to chamber and bypass, where blower is integrated to valve |
| JP2009156839A (en) * | 2007-12-28 | 2009-07-16 | Maezawa Kyuso Industries Co Ltd | Water leakage detecting method of water supply line, and water shut off valve with water leakage detecting function |
| KR20180097862A (en) * | 2017-02-24 | 2018-09-03 | 이동민 | Leak sensor assembly |
| KR101955607B1 (en) * | 2017-02-24 | 2019-03-07 | 이동민 | Leak sensor assembly |
| WO2019050148A1 (en) * | 2017-09-05 | 2019-03-14 | 이동민 | Leak-detecting sensor assembly |
| KR102062747B1 (en) * | 2017-09-05 | 2020-01-06 | 이동민 | Leak sensor assembly |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3645493B2 (en) | 2005-05-11 |
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