JPH0719921A - Water flow detecting device - Google Patents
Water flow detecting deviceInfo
- Publication number
- JPH0719921A JPH0719921A JP18937093A JP18937093A JPH0719921A JP H0719921 A JPH0719921 A JP H0719921A JP 18937093 A JP18937093 A JP 18937093A JP 18937093 A JP18937093 A JP 18937093A JP H0719921 A JPH0719921 A JP H0719921A
- Authority
- JP
- Japan
- Prior art keywords
- voltage
- water
- flow
- detecting
- water flow
- 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
- Measuring Volume Flow (AREA)
- Indicating Or Recording The Presence, Absence, Or Direction Of Movement (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、水が流れる管内の水の
流れを検出する水流検出装置に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a water flow detecting device for detecting the flow of water in a pipe through which water flows.
【０００２】[0002]
【従来の技術】従来この種の水流検出装置としては、例
えば図４に示すような水流検出装置が存在する。この装
置では管内に支点１２を軸としてクラッパ１１が設けら
れており、水流がないときには図４に示す状態にあり、
水が流れるとクラッパが水の力で移動してリードスイッ
チ側に接触する。そして、リードスイッチ側に接触する
ことにより水の流れを判別するようにしたものである。2. Description of the Related Art Conventionally, as this type of water flow detecting device, for example, there is a water flow detecting device as shown in FIG. In this device, the clapper 11 is provided in the pipe with the fulcrum 12 as an axis, and when there is no water flow, it is in the state shown in FIG.
When the water flows, the clapper moves by the force of the water and comes into contact with the reed switch side. Then, the flow of water is discriminated by contacting the reed switch side.
【０００３】[0003]
【発明が解決しようとする課題】しかしながら従来の水
流検出装置では、クラッパの開閉によりリードスイッチ
をオン、オフするようになっていたため、ゴミの付着に
よる動作不良、可動部の磨耗等による機械的耐久性が問
題となっていた。However, in the conventional water flow detecting device, since the reed switch is turned on and off by opening and closing the clapper, malfunction due to dust adhesion, mechanical durability due to abrasion of moving parts, etc. Sex was a problem.
【０００４】そこで、本発明は上述の問題点に鑑みてな
されたものであって、機械的可動部のない水流検出装置
を提供し、機械的耐久性を向上し、しかも構造の簡単な
水流検出装置を提供することを目的とする。Therefore, the present invention has been made in view of the above-mentioned problems, and provides a water flow detecting device having no mechanical moving part, which improves mechanical durability and has a simple structure. The purpose is to provide a device.
【０００５】[0005]
【課題を解決するための手段】上記目的を達成するため
に請求項１記載の発明は、管内の水の流れを検出する水
流検出装置において、管の一部に電圧を印加する電圧印
加手段と、前記電圧印加手段よりも下流側に設けられた
電極間の電流もしくは電圧を検出する検出手段と、前記
電圧印加手段による電圧印加状況と前記検出手段による
検出状況とに基づいて、管内の水の流れを判別する判別
手段とを具備したことを特徴とする。In order to achieve the above object, the invention according to claim 1 is a water flow detecting device for detecting the flow of water in a pipe, and a voltage applying means for applying a voltage to a part of the pipe. , The detection means for detecting the current or voltage between the electrodes provided on the downstream side of the voltage application means, and the water in the pipe based on the voltage application situation by the voltage application means and the detection situation by the detection means It is characterized in that it comprises a discriminating means for discriminating the flow.
【０００６】請求項２記載の発明は、管内の水の流れを
検出する水流検出装置において、管の一部に電圧を印加
する電圧印加手段と、前記電圧印加手段よりも下流側に
設けられた電極間の電流もしくは電圧を検出する検出手
段と、前記電圧印加手段による電圧印加のタイミングと
前記検出手段による検出のタイミングとの差に基づい
て、管内の水の流速を判別する判別手段とを具備したこ
とを特徴とする。According to a second aspect of the present invention, in a water flow detecting device for detecting the flow of water in a pipe, a voltage applying means for applying a voltage to a part of the pipe and a downstream side of the voltage applying means are provided. A detection means for detecting a current or a voltage between the electrodes, and a discrimination means for discriminating the flow velocity of water in the pipe based on the difference between the timing of voltage application by the voltage application means and the timing of detection by the detection means. It is characterized by having done.
【０００７】[0007]
【作用】管１の一部に電圧印加手段４により電圧を印加
して水を電気分解し、その下流側に電極５、６を設けて
その電極間に流れる電流もしくは電圧を検出手段７によ
り検出する。The voltage applying means 4 applies a voltage to a part of the tube 1 to electrolyze water, and the electrodes 5 and 6 are provided on the downstream side thereof, and the current or voltage flowing between the electrodes is detected by the detecting means 7. To do.
【０００８】また、判別手段８は電圧印加手段４の電圧
の印加状況と検出手段７の検出状況により、水の流れの
有無等の水の流れを判別する。特に、電圧印加手段４の
印加のタイミングと検出手段７の検出のタイミングのず
れにより流速を判別する。The discriminating means 8 discriminates the flow of water such as the presence / absence of water flow based on the voltage application state of the voltage applying means 4 and the detection state of the detecting means 7. In particular, the flow velocity is discriminated by the difference between the application timing of the voltage applying means 4 and the detection timing of the detecting means 7.
【０００９】[0009]
【実施例】以下、本発明の実施例を図面を参照して説明
する。図１が本発明の水流検出装置の構成を示す図であ
る。Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a diagram showing the configuration of the water flow detection device of the present invention.
【００１０】図１に示すように、水が流れる管１のある
箇所に電極２、３が設けられ、この電極２、３は電圧印
加手段４と接続されている。また、電極２、３よりも下
流側には電極５、６が設けられており、この電極５、６
は検出手段７と接続されている。更に、電圧印加手段４
及び検出手段７は判別手段８に接続されている。As shown in FIG. 1, electrodes 2 and 3 are provided at a portion of a pipe 1 through which water flows, and the electrodes 2 and 3 are connected to a voltage applying means 4. Further, electrodes 5 and 6 are provided on the downstream side of the electrodes 2 and 3, and the electrodes 5 and 6 are provided.
Is connected to the detection means 7. Further, the voltage applying means 4
And the detection means 7 is connected to the discrimination means 8.
【００１１】この電圧印加手段４は電極２、３に電圧を
印加することにより管内の水（Ｈ2Ｏ）を電気分解し、
Ｈ＋、ＯＨ−イオンを発生させるものである。一般に、
水道水は不純物の混じったイオン性容液（電荷を伝え
る）であるので、電極２、３間に所定以上の電圧を印加
すれば電気分解を起こし、Ｈ＋、ＯＨ−イオンを発生す
る。The voltage applying means 4 applies a voltage to the electrodes 2 and 3 to electrolyze water (H 2 O) in the tube,
It generates H + and OH- ions. In general,
Since tap water is an ionic liquid containing impurities (transmits electric charge), if a voltage higher than a predetermined voltage is applied between the electrodes 2 and 3, electrolysis occurs and H + and OH − ions are generated.
【００１２】検出手段７は、管内の水がＨ＋、ＯＨ−の
イオンの存在を判別するものであり、イオンが多数存在
すればそのイオンにより電極５、６を通して電流が流れ
るので、検出手段７は水のイオン状態を判断することが
できる。The detecting means 7 determines the presence of H + and OH- ions in the water in the tube. If a large number of ions are present, a current flows through the electrodes 5 and 6 due to the ions, so the detecting means 7 is The ionic state of water can be determined.
【００１３】判別手段８は、電圧印加手段４の電圧印加
レベル、印加のタイミングとそれに対応する検出手段の
検出のレベル、タイミングにより水流の有無、速さ等を
判別するものである。The discriminating means 8 discriminates the presence / absence of water flow, the speed, etc. based on the voltage application level of the voltage applying means 4, the application timing and the detection level and timing of the detecting means corresponding thereto.
【００１４】次に、本発明の水流検出装置の検出動作を
図２及び図３を用いて説明する。Next, the detection operation of the water flow detection device of the present invention will be described with reference to FIGS.
【００１５】水流を検出する際には、電圧印加手段４が
電極２と電極３との間に電圧Ｖをｔ秒間印加する。これ
により電極２、３付近の水は電気分解を起こしイオンを
発生する。そして、その後電圧印加手段４が電極２と電
極３との間に電圧−Ｖをｔ秒間印加する。When detecting the water flow, the voltage applying means 4 applies the voltage V between the electrodes 2 and 3 for t seconds. As a result, the water near the electrodes 2 and 3 undergoes electrolysis to generate ions. Then, after that, the voltage applying means 4 applies the voltage -V between the electrodes 2 and 3 for t seconds.
【００１６】ここで、管１内の水が流れていなければ、
最初の電圧印加の際に発生したイオンは電極５、６には
到達せず、後に印加される−Ｖの電圧印加により中和さ
れる。Here, if the water in the pipe 1 is not flowing,
The ions generated during the first voltage application do not reach the electrodes 5 and 6, but are neutralized by the later-applied −V voltage.
【００１７】一方、管１内に水が流れていれば、電圧印
加手段４、電極２、３により電気分解されたイオンが電
極５、６まで流れて行き、電極５、６により中和され
る。電極５、６には電気分解を起こす電圧よりも低い電
圧が印加されているので、負のイオンは正の電極側へ、
正イオンは負の電極側へ流れて中和される。On the other hand, when water is flowing in the tube 1, the ions electrolyzed by the voltage applying means 4, the electrodes 2, 3 flow to the electrodes 5, 6 and are neutralized by the electrodes 5, 6. . Since a voltage lower than the voltage that causes electrolysis is applied to the electrodes 5 and 6, negative ions move to the positive electrode side,
Positive ions flow to the negative electrode side and are neutralized.
【００１８】そして、このときイオンにより電極５、６
の間では電流変化を起こすので検出手段７がそれを検出
する。その検出の様子を示したのが図３である。なお、
この検出は電流自体を検出しても、電流−電圧変換して
電圧で検出してもよい。At this time, the electrodes 5 and 6 are caused by the ions.
During this period, a change in current occurs, and the detecting means 7 detects it. The state of the detection is shown in FIG. In addition,
In this detection, the current itself may be detected, or the voltage may be detected by converting the current into a voltage.
【００１９】また、判別手段８は電圧印加手段４による
電圧印加レベルと検出手段７の検出レベルとの関係を判
断することにより流速の有無を判別し、更に、電圧印加
手段４が電圧を印加してから検出手段７が対応する検出
レベルを検出するまでの遅延時間を検出することにより
管１内の水の流れの速さを判別する。The discriminating means 8 discriminates the presence or absence of the flow velocity by judging the relationship between the voltage application level of the voltage applying means 4 and the detection level of the detecting means 7, and the voltage applying means 4 further applies the voltage. The speed of the flow of water in the pipe 1 is determined by detecting the delay time from when the detection means 7 detects the corresponding detection level.
【００２０】例えば、管の内径が１０ｍｍ、電圧印加手
段４と検出手段７の電極間隔が１００ｍｍで、０．１ｓ
幅の電圧を印加したときに、０．２４秒後に検出すれば
流速は２ｌ／ｍｉｎである。For example, if the inner diameter of the tube is 10 mm, the electrode spacing between the voltage applying means 4 and the detecting means 7 is 100 mm, and the time is 0.1 s.
When a voltage of width is applied, the flow velocity is 2 l / min if detected 0.24 seconds later.
【００２１】なお、上記実施例では電圧印加手段４によ
り正及び負の電圧を各々１回づつ印加するようにしてい
るが、数回行って検出するようにしても良い。In the above embodiment, the positive and negative voltages are applied once by the voltage applying means 4, but they may be detected several times.
【００２２】また、電極２、３、５、６は金もしくは白
金を用いることが望ましい。管１は非導電性のもの、例
えば樹脂でできた樹脂管を用いることが望ましい。この
場合、管を通じての中和が生じない。また、電極２、３
と電極５、６との間を樹脂管とすれば十分である。Further, it is desirable to use gold or platinum for the electrodes 2, 3, 5, and 6. It is desirable to use a non-conductive tube 1, for example, a resin tube made of resin. In this case, there is no neutralization through the tube. Also, the electrodes 2, 3
It is sufficient to use a resin tube between the electrode and the electrodes 5 and 6.
【００２３】[0023]
【発明の効果】以上説明したように、本発明では管内の
水に電圧を印加して電気分解を起こし、その下流側で電
気分解に対応する状況を検出することによって、管内の
水の流れの有無、流速を判別可能としたので、機械的可
動部を有さずに水流を検出でき、構造が簡単であり、し
かも機械的可動部がないため耐久性が向上する効果があ
る。As described above, according to the present invention, a voltage is applied to water in a pipe to cause electrolysis, and a condition corresponding to the electrolysis is detected on the downstream side of the water to detect the flow of water in the pipe. Since the presence / absence and the flow velocity can be discriminated, the water flow can be detected without having a mechanically movable portion, the structure is simple, and the durability is improved because there is no mechanically movable portion.
【図１】本発明の構成を示す説明図である。FIG. 1 is an explanatory diagram showing a configuration of the present invention.
【図２】本発明の動作の説明図である。FIG. 2 is an explanatory diagram of the operation of the present invention.
【図３】本発明の動作の説明図である。FIG. 3 is an explanatory diagram of the operation of the present invention.
【図４】従来技術の説明図である。FIG. 4 is an explanatory diagram of a conventional technique.
１ 管 ４ 電圧印加手段 ７ 検出手段 ８ 判別手段 1 tube 4 voltage applying means 7 detecting means 8 discriminating means
Claims (2)
において、 管の一部に電圧を印加する電圧印加手段と、 前記電圧印加手段よりも下流側に設けられた電極間の電
流もしくは電圧を検出する検出手段と、 前記電圧印加手段による電圧印加状況と前記検出手段に
よる検出状況とに基づいて、管内の水の流れを判別する
判別手段と、 を具備したことを特徴とする水流検出装置。1. A water flow detection device for detecting the flow of water in a tube, comprising: a voltage applying means for applying a voltage to a part of the tube; and a current or voltage between electrodes provided on the downstream side of the voltage applying means. A water flow detecting device comprising: a detection unit that detects the flow of water; and a determination unit that determines the flow of water in the pipe based on the voltage application state of the voltage application unit and the detection state of the detection unit. .
において、 管の一部に電圧を印加する電圧印加手段と、 前記電圧印加手段よりも下流側に設けられた電極間の電
流もしくは電圧を検出する検出手段と、 前記電圧印加手段による電圧印加のタイミングと前記検
出手段による検出のタイミングとの差に基づいて、管内
の水の流速を判別する判別手段と、 を具備したことを特徴とする水流検出装置。2. A water flow detecting device for detecting the flow of water in a pipe, wherein a voltage applying means for applying a voltage to a part of the pipe and a current or a voltage between electrodes provided on the downstream side of the voltage applying means. And a determination unit that determines the flow velocity of water in the pipe based on the difference between the timing of voltage application by the voltage application unit and the timing of detection by the detection unit. Water flow detection device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18937093A JPH0719921A (en) | 1993-06-30 | 1993-06-30 | Water flow detecting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18937093A JPH0719921A (en) | 1993-06-30 | 1993-06-30 | Water flow detecting device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0719921A true JPH0719921A (en) | 1995-01-20 |
Family
ID=16240189
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP18937093A Pending JPH0719921A (en) | 1993-06-30 | 1993-06-30 | Water flow detecting device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0719921A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105699689A (en) * | 2016-01-22 | 2016-06-22 | 中国石油大学(华东) | Device and method for measuring fluid velocity slippage coefficient of seepage-free flow interface |
-
1993
- 1993-06-30 JP JP18937093A patent/JPH0719921A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105699689A (en) * | 2016-01-22 | 2016-06-22 | 中国石油大学(华东) | Device and method for measuring fluid velocity slippage coefficient of seepage-free flow interface |
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