JPS589029A - Confirming device for operation of water level detecting end - Google Patents
Confirming device for operation of water level detecting endInfo
- Publication number
- JPS589029A JPS589029A JP56106882A JP10688281A JPS589029A JP S589029 A JPS589029 A JP S589029A JP 56106882 A JP56106882 A JP 56106882A JP 10688281 A JP10688281 A JP 10688281A JP S589029 A JPS589029 A JP S589029A
- Authority
- JP
- Japan
- Prior art keywords
- signal
- water level
- signals
- detecting
- electrode
- 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
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F23/00—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm
- G01F23/22—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by measuring physical variables, other than linear dimensions, pressure or weight, dependent on the level to be measured, e.g. by difference of heat transfer of steam or water
- G01F23/24—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by measuring physical variables, other than linear dimensions, pressure or weight, dependent on the level to be measured, e.g. by difference of heat transfer of steam or water by measuring variations of resistance of resistors due to contact with conductor fluid
- G01F23/241—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by measuring physical variables, other than linear dimensions, pressure or weight, dependent on the level to be measured, e.g. by difference of heat transfer of steam or water by measuring variations of resistance of resistors due to contact with conductor fluid for discrete levels
- G01F23/242—Mounting arrangements for electrodes
Landscapes
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Fluid Mechanics (AREA)
- General Physics & Mathematics (AREA)
- Measurement Of Levels Of Liquids Or Fluent Solid Materials (AREA)
Abstract
Description
【発明の詳細な説明】
本発明は電極棒を用いた水位検出端の動作が正常か否か
を確認する作動確認装置に関するものである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an operation confirmation device for confirming whether or not the operation of a water level detection end using an electrode rod is normal.
水位を検出するのｌこ電極棒を用いる方法は、多く用い
られているが１例えばボイラの缶水などの場合に、不純
物の濃度が高く、電極棒ｌこスケールが付着して絶縁さ
れて水位６ｓ検知できなくなったり、短絡による動作不
良などを起仁し、これを知らずに用いていると水位の異
常上昇又は異常低下を発見することができず、事故の原
因となるおそれがあった。The method of using an electrode rod to detect the water level is often used; however, in the case of canned water from a boiler, for example, the concentration of impurities is high and the electrode rod is insulated with scale adhering to it, causing the water level to rise. If the system is used without knowing that the system cannot detect 6 seconds or malfunctions due to a short circuit, it may not be possible to detect an abnormal rise or fall in the water level, which may lead to an accident.
本発明は、電極棒め°導通状態を所定の短時間毎に検出
し、導通信号の組み合わせの状態又は推移のモードによ
り異常状態を検出するよう番こしたことにより、従来の
ものの上記の欠点を除き、絶縁や短絡に基づく異常を直
ちｊこ発見し、事故を未然に防ぐことができる水位検出
端作動確認装置を提−３−
供することを目的とするものである。The present invention overcomes the above-mentioned drawbacks of the conventional ones by detecting the conduction state of the electrode rod at predetermined short intervals and detecting abnormal conditions based on the combination state or transition mode of the conduction signal. The purpose of the present invention is to provide a water level detection end operation confirmation device that can immediately detect abnormalities due to insulation or short circuits and prevent accidents.
本発明を実施例につき図面を用いて説明する。The present invention will be explained with reference to the drawings based on examples.
図において、ボイラの缶水などの水面１の水位を検出す
るために、検出端として４本の電極棒２゜＄、４．１が
備えられている。各電極棒Ｚ、Ｓ。In the figure, four electrode rods 2° and 4.1 are provided as detection ends in order to detect the water level of water 1 such as canned water in a boiler. Each electrode rod Z, S.
・５・ｓ′）下端は高さが願次異ならしめてあり・各奪
゛端高６は次の如き水位と一致する。・5・s') The height of the lower end is made to be different depending on the application. ・Each end height 6 corresponds to the following water level.
電極棒３・・・・・・レベルＨ・・・・・・ これを越
えたら給水ポンプを停止せしめる水位
！極棒［・・・・レベルＭ・・・・・・ これ以下なら
ば給水ボン゛′ プを運転せしめる
水位電極棒し・・・・レベルＬ・・・・・・ これ以上
のレベルならばボイラの燃焼を行なわし
める水位
電１ｉ棒１・・・・レベルＣ基準レベル各“電極棒＊、
＠、４．５１こおいては、その下端が液体Ｉこ接触して
いるときに導通があり、信号ｌを発し、接触していない
ときには信号を発しない（・こ、の状態を、信号が０で
あるとする）ような信号ｉ路え接続、れ、い、。Electrode 3...Level H...The water level above which the water pump will stop! Pole [... Level M... If it is below this, it is the water level electrode that operates the water supply pump... Level L... If it is above this level, it is the boiler. The water level that causes the combustion of 1i rod 1...Level C standard level each "electrode rod *,
@, 4.51 In this case, when the lower end is in contact with the liquid I, there is continuity and a signal l is emitted, and when there is no contact, no signal is emitted (・This state is defined as the signal 0) such that the signal i is connected.
ボイラの運転中ｌこ所定の短時間（例えば７ミリ秒程度
）の間隔の測点時点）ごとに電極棒鵞、し４．１からの
信号をチェックし、信号の組み合わせの状態又は測定時
点が変るときｌこ信号の組み合わせが変わるモードによ
り異常を発見する。During operation of the boiler, the signals from the electrode rods 4.1 are checked at predetermined short time intervals (for example, about 7 milliseconds) at measurement points, and the state of the signal combination or measurement point is checked. Anomalies are detected by the mode in which the combination of signals changes when the signal changes.
例えば、成る測定時点において、下端高さの低位のもの
が信号０である（ ＯＦＦ 信号）である基こも拘ら
ず、それより上位のものが信号１（ＯＮ信号）を発して
いる場合は、故障であると判断し。For example, at the measurement point in time, even though the lower end height is the signal 0 (OFF signal), if the higher level one is emitting the signal 1 (ON signal), it will indicate a failure. I decided that it was.
その組み合わせによりどの電極棒のラインが故障してい
るかを推定する〇
例えば
ＭＬＣ
００１Ｇ ならば Ｌ故障
１１０１ ｐ ｙ
０１０１ ｐ ｙ
０１００ ＃ Ｍ故障
１０１１ ＃ ＃
１０００ ｌ Ｈ故障
５−
であると推定することができる。Based on the combination, it is estimated which electrode line is faulty. For example, if MLC 001G, it can be estimated that L fault 1101 p y 0101 p y 0100 # M fault 1011 # # 1000 l H fault 5- can.
また、水位の変動は１例えば１ミリ秒程度の極めて短時
間には急激な水位の変動は起こり得ないので成る時点の
検出における信号の組み合わせから１次の時点の検出に
おける信号の組み合わせに推移する変化が、２個以上の
電極棒の信号が同時に０から１へ、或いは１からＯへ変
化した場合には少なくとも何れか一つの電極棒のライン
が故障であると推定する。In addition, since rapid water level fluctuations cannot occur in an extremely short period of time, such as 1 millisecond, the combination of signals for detection at the first time point changes to the combination of signals for detection at the first time point. If the signals of two or more electrode rods change from 0 to 1 or from 1 to O at the same time, it is estimated that at least one of the electrode rod lines is faulty.
さらに、例えば、給水ポンプを運転したまま燃−焼を停
止して水位を漸増せしめ、低位のものから順次信号１を
発することを確かめ、また逆に、燃焼を続けたまま給水
ポンプを停止して水位を漸減せしめ、高位のものから順
次信号０となることを確かめ、正常なることを確認し、
そうでな（１）場合に故障であると推定する。ｔた。と
のよ引こ水位を漸増又は漸減せしめ、所定の時間経過後
にもなお、最高位のものが信号１を発しな＆１か、又＆
ま最低位のものが信号０にならない場合には故障と推定
する。Furthermore, for example, you can stop the combustion while the water pump is running, gradually increase the water level, and make sure that signal 1 is emitted sequentially from the lowest level, or conversely, stop the water pump while the combustion continues. Gradually reduce the water level and check that the signal becomes 0 starting from the highest level and confirm that it is normal.
If this is not the case (1), it is assumed that there is a failure. It was. The water level of Tonoyo is gradually increased or decreased, and even after a predetermined period of time, the highest one still does not emit signal 1 or &1.
If the lowest signal does not become 0, it is assumed that there is a failure.
６一
本発明により、水位検出端の回路が正常に作動している
ことを、常に確実に確認し、異常水位による事故を未然
に防止することができる水位検出端作動確認装置を提供
することができ、実用上。61 According to the present invention, it is possible to provide a water level detection terminal operation confirmation device that can always reliably confirm that the circuit of the water level detection terminal is operating normally and can prevent accidents caused by abnormal water levels. Possible and practical.
安全上極めて大なる効果を奏することができる。This can have an extremely large effect on safety.
図面は本発明の実施例の電極棒配置説明図である。 １・・・・・・水面 ３・・・・・・電極棒 ３ ・・・・・・ Ｉ ４・・・・・・ ｌ ｌ・・・−・・ Ｉ 特許出願人 株式会社荏原製作所 The drawing is an explanatory diagram of electrode rod arrangement according to an embodiment of the present invention. １・・・・・・Water surface 3... Electrode rod ３ ・・・・・・ I ４・・・・・・ l l・・・-・・I Patent applicant: Ebara Corporation
Claims (1)
え、各電極棒の下端と液体との接触によりＯＮ信号が発
せられ、接触がないときにＯＦＦ 信号が発せられるよ
うにした水位検出端の作動確認装置において。 前記電極棒の信号を、下端高さの願に検出する動作を、
所定の短時間毎５こ繰り返し、前記信号の検出状態が少
なくとも次の何れかである場合に故障であることを示す
ことを特徴とする水位検出端作動確認装置。 （１） 下端高６の低位のものがＯＦＦ信号を発して
いる５こも拘らず、それより上位のものがＯＮ信号を発
している場合。 （２） 成る時点の検出状態に比べ１次の時点の検出
状態の変化が、２個以上の電極棒の・信２− 号が同時ｌこＯＮからＯＦＦへ、又はＯＦＦ からＯ
Ｎへ変化した場合。[Claims] 1. A plurality of electrode rods having different lower end heights 6 are provided, and an ON signal is emitted when the lower end of each electrode comes into contact with a liquid, and an OFF signal is emitted when there is no contact. In a device for confirming the operation of a water level detection end. The operation of detecting the signal of the electrode rod at the lower end height,
A water level detection end operation confirmation device characterized in that the detection state of the signal is repeated five times at predetermined short time intervals to indicate a failure if the detection state of the signal is at least one of the following. (1) Even though the lower end height 6 is emitting an OFF signal, the higher one is emitting an ON signal. (2) The change in the detection state at the first time point compared to the first time point is that the signals of two or more electrodes simultaneously go from ON to OFF, or from OFF to OFF.
When it changes to N.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP56106882A JPS589029A (en) | 1981-07-10 | 1981-07-10 | Confirming device for operation of water level detecting end |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP56106882A JPS589029A (en) | 1981-07-10 | 1981-07-10 | Confirming device for operation of water level detecting end |
Related Child Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP63-122046A Division JPH01422A (en) | 1988-05-20 | Water level detection end operation confirmation device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS589029A true JPS589029A (en) | 1983-01-19 |
| JPH048732B2 JPH048732B2 (en) | 1992-02-18 |
Family
ID=14444866
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP56106882A Granted JPS589029A (en) | 1981-07-10 | 1981-07-10 | Confirming device for operation of water level detecting end |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS589029A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01263453A (en) * | 1988-04-14 | 1989-10-19 | Matsushita Electric Ind Co Ltd | Water level detecting device |
| JPH03105101A (en) * | 1989-09-18 | 1991-05-01 | Noritz Corp | Steam generator |
| JP2011237240A (en) * | 2010-05-10 | 2011-11-24 | Nihon Itomic Co Ltd | Scale detection sensor and scale detection method |
| WO2014027208A2 (en) * | 2012-08-16 | 2014-02-20 | University Of Bradford | Device and method for measuring the depth of media |
-
1981
- 1981-07-10 JP JP56106882A patent/JPS589029A/en active Granted
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01263453A (en) * | 1988-04-14 | 1989-10-19 | Matsushita Electric Ind Co Ltd | Water level detecting device |
| JPH03105101A (en) * | 1989-09-18 | 1991-05-01 | Noritz Corp | Steam generator |
| JP2011237240A (en) * | 2010-05-10 | 2011-11-24 | Nihon Itomic Co Ltd | Scale detection sensor and scale detection method |
| WO2014027208A2 (en) * | 2012-08-16 | 2014-02-20 | University Of Bradford | Device and method for measuring the depth of media |
| WO2014027208A3 (en) * | 2012-08-16 | 2014-05-08 | University Of Bradford | Device and method for measuring the depth of media |
| US9939306B2 (en) | 2012-08-16 | 2018-04-10 | The University Of Bradford | Device and method for measuring the depth of media |
| US10234320B2 (en) | 2012-08-16 | 2019-03-19 | The University Of Bradford | Device and method for measuring the depth of media |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH048732B2 (en) | 1992-02-18 |
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