JPH0827303B2 - High voltage detection alarm device - Google Patents
High voltage detection alarm deviceInfo
- Publication number
- JPH0827303B2 JPH0827303B2 JP15530193A JP15530193A JPH0827303B2 JP H0827303 B2 JPH0827303 B2 JP H0827303B2 JP 15530193 A JP15530193 A JP 15530193A JP 15530193 A JP15530193 A JP 15530193A JP H0827303 B2 JPH0827303 B2 JP H0827303B2
- Authority
- JP
- Japan
- Prior art keywords
- high voltage
- dielectric
- alarm device
- voltage detection
- 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.)
- Expired - Lifetime
Links
Landscapes
- Measurement Of Current Or Voltage (AREA)
Description
【０００１】[0001]
【産業上の利用分野】本発明は、高電圧（数１０ｋＶ〜
数１０００ｋＶ）を使用する装置において、何らかの事
故により高電圧が印加されるべきでない箇所に印加され
た場合の検出と警報を行う高電圧検出警報装置に関す
る。BACKGROUND OF THE INVENTION The present invention relates to a high voltage (several 10 kV-
In a device using several thousand kV), the present invention relates to a high voltage detection alarm device which performs detection and alarm when a high voltage is applied to a place where it should not be applied due to some accident.
【０００２】[0002]
【従来の技術】従来、この種の高電圧検出警報装置にお
いては、高電圧発生時に接地点に流れる放電電流を検出
して高電圧を検出し、この検出信号によりリレー等の開
閉遮断器を動作させている（例えば特開平１−２０２０
３４号公報）。2. Description of the Related Art Conventionally, in a high voltage detection alarm device of this type, when a high voltage is generated, a discharge current flowing to a ground point is detected to detect a high voltage, and a switch circuit breaker such as a relay is operated by this detection signal. (For example, JP-A-1-2020
34 publication).
【０００３】あるいは、高電圧の検出電圧を基準電圧と
比較し、その出力により制御回路を通して開閉遮断器を
動作させている（例えば特開平２−３４８９２号公
報）。Alternatively, a high-voltage detection voltage is compared with a reference voltage, and the output of the comparison circuit operates a switching circuit breaker through a control circuit (for example, Japanese Patent Laid-Open No. 34892/1990).
【０００４】[0004]
【発明が解決しようとする課題】従来技術における高電
圧検出回路と開閉遮断器の動作は、主に高圧時放電電流
ΔＩや比較電圧ΔＶの検出信号を電子制御回路を通して
行うので、高電圧の電子回路への影響が予想されるこ
と、また回路構成が複雑になると言う問題があった。In the operation of the high voltage detection circuit and the switching breaker in the prior art, the detection signals of the high-current discharge current ΔI and the comparison voltage ΔV are mainly transmitted through the electronic control circuit, so that the high voltage electronic circuit is operated. There are problems that the circuit is expected to be affected and the circuit configuration becomes complicated.
【０００５】本発明の目的は、上述のような問題を解決
し、構造が極めて簡単な高電圧検出警報装置を提供する
ことにある。An object of the present invention is to solve the above-mentioned problems and to provide a high voltage detection alarm device having a very simple structure.
【０００６】[0006]
【課題を解決するための手段】上記目的を達成するため
に、本発明は、第１電極の上面に誘電率がε 1 の第１誘
電体を設け、第１誘電体の上面に誘電率がε 2 （ただ
し、ε 2 ＜ε 1 ）の第２誘電体を設け、第２誘電体の上
面に第２電極を設けてコンデンサを構成し、一端が第２
電極と微小距離隔てて配置されるように第１誘電体中に
金属棒を設け、漏洩した高電圧を検出する端子又はスイ
ッチよりなる高電圧検出端子の一方を第１電極に他方を
直流高電圧源の高圧側に接続し、直流高電圧源の低圧側
を第２電極に接続し、金属棒の他端を警報器の一端に接
続し、警報器の他端を警報用電源を介して第２電極に接
続したものである。 [Means for Solving the Problems] To achieve the above object
The present invention, the upper surface of the first electrode dielectric constant of epsilon 1 first induction
An electric body is provided, and the dielectric constant is ε 2 (only
Then, a second dielectric with ε 2 <ε 1 ) is provided on the second dielectric.
A second electrode is provided on the surface to form a capacitor, and one end is the second
In the first dielectric so that it is placed a minute distance from the electrodes
A metal rod is provided to detect terminals or switches that detect leaked high voltage.
One of the high-voltage detection terminals is the first electrode and the other is the
Connect to the high voltage side of the DC high voltage source, and
To the second electrode and connect the other end of the metal rod to one end of the alarm.
Then connect the other end of the alarm to the second electrode via the alarm power supply.
It is a continuation.
【０００７】[0007]
【作用】本発明の高電圧検出警報装置は、異なる２種類
の誘電体に高電圧が印加されると、誘電率の大きい誘電
体が誘電率の小さい誘電体にマクスウェル応力により吸
い込まれる現象を利用し、誘電率の大きい誘電体に埋め
込まれた金属棒が誘電体と共に移動することにより、警
報用のスイッチとして開閉遮断動作を行わせる点に特徴
がある。従って電流や電圧を検出し遮断器を開閉させる
余分な電子制御回路を必要としない。The high voltage detection alarm device of the present invention utilizes the phenomenon that when a high voltage is applied to two different types of dielectrics, a dielectric with a large dielectric constant is sucked into a dielectric with a small dielectric constant due to Maxwell stress. However, it is characterized in that the metal rod embedded in the dielectric having a large permittivity moves together with the dielectric to perform the opening / closing interruption operation as the alarm switch. Therefore, no extra electronic control circuit for detecting the current or voltage and opening / closing the circuit breaker is required.
【０００８】[0008]
【実施例】次に本発明の実施例について図面を参照して
説明する。Next, an embodiment of the present invention will be described with reference to the drawings.
【０００９】図１は本発明の一実施例を示す。この高電
圧検出警報装置は、誘電率の異なる２種類の誘電体３，
４を２枚の金属板（陽極１および陰極２）で挟んだコン
デンサ１０を備えている。陽極１および陰極２は、動か
ないように固定されている。誘電体３の誘電率をε1 、
誘電体４の誘電率をε2 としたときに、ε1 ＞ε2 であ
るとする。FIG. 1 shows an embodiment of the present invention. This high voltage detection alarm device has two types of dielectrics 3 with different dielectric constants.
A capacitor 10 in which 4 is sandwiched between two metal plates (anode 1 and cathode 2) is provided. The anode 1 and the cathode 2 are fixed so as not to move. Let the dielectric constant of the dielectric 3 be ε 1 ,
When the dielectric constant of the dielectric 4 is ε 2 , ε 1 > ε 2 .
【００１０】コンデンサ１０の陽極１と陰極２との間に
は、漏洩した高電圧を検出する端子またはスイッチより
なる高電圧検出端子９と、数１０ｋＶ〜数１００ｋＶ直
流高電圧源６との直列回路を接続する。Between the anode 1 and the cathode 2 of the capacitor 10, a series circuit of a high voltage detection terminal 9 composed of a terminal or a switch for detecting a leaked high voltage and a DC high voltage source 6 of several 10 kV to several 100 kV. Connect.
【００１１】高電圧検出端子９は、漏洩した高電圧を検
出すると、端子Ａ，Ｂ間が閉じる構造となっている。The high voltage detection terminal 9 has a structure in which the terminals A and B are closed when a leaked high voltage is detected.
【００１２】コンデンサ１０の誘電体３と４内には、電
極間の方向に平行な部分を有する金属棒５が埋め込まれ
ている。この金属棒５の先端部１１は、陰極２に微小間
隔をおいて配置されている。A metal rod 5 having a portion parallel to the direction between the electrodes is embedded in the dielectrics 3 and 4 of the capacitor 10. The tip portion 11 of the metal rod 5 is arranged in the cathode 2 at a minute interval.
【００１３】金属棒５とコンデンサ１０の陰極２との間
には、高電圧検出時に警報を行うブザー，点滅ランプ，
表示ランプ等の警報器８と、警報用電源７とが接続され
ている。Between the metal rod 5 and the cathode 2 of the capacitor 10, a buzzer for issuing an alarm when a high voltage is detected, a blinking lamp,
An alarm device 8 such as a display lamp and the alarm power supply 7 are connected.
【００１４】次に本実施例の動作を説明する。高電圧を
使用している装置が正常に動作し高電圧が漏洩していな
い場合、つまり高電圧検出端子９が開の状態では、コン
デンサ１０の電極間には直流高電圧が印加されないの
で、誘電体にはマクスウェル応力が働かない。したがっ
て、金属棒５の先端１１は陰極２に接触しないので、警
報器８に電流が流れず警報は発せられない。Next, the operation of this embodiment will be described. When the device using the high voltage operates normally and the high voltage is not leaked, that is, when the high voltage detection terminal 9 is open, the DC high voltage is not applied between the electrodes of the capacitor 10, so that the dielectric Maxwell stress does not work on the body. Therefore, since the tip end 11 of the metal rod 5 does not contact the cathode 2, no current flows through the alarm device 8 and no alarm is issued.
【００１５】何らかの異常で高電圧が漏洩すると、高電
圧検出端子９の端子Ａ，Ｂ間が閉じ、コンデンサ１０の
陽極１から陰極２に電界Ｅが印加される。このとき、陽
極１から陰極２へは、次式で示されるマクスウェル応力
ｆが働く。When a high voltage leaks due to some abnormality, the terminals A and B of the high voltage detection terminal 9 are closed, and the electric field E is applied from the anode 1 to the cathode 2 of the capacitor 10. At this time, the Maxwell stress f expressed by the following formula acts from the anode 1 to the cathode 2.
【００１６】[0016]
【数１】 [Equation 1]
【００１７】このマクスウェル応力ｆにより、誘電率の
大きい誘電体３は、誘電率の小さい誘電体４に吸い込ま
れるため、誘電体３に埋め込んだ金属棒５も共に陰極２
側に移動する。特に誘電体４を空気とすると、誘電体３
に埋め込まれた金属棒５は、誘電体３と共に陰極２側へ
移動する。金属棒５の先端１１が陰極２と接触すると、
金属棒５−陰極２−警報用電源７−警報器８の閉回路が
形成されるため、警報器８の回路が閉じ、警報器８が作
動する。Due to the Maxwell stress f, the dielectric 3 having a large dielectric constant is sucked into the dielectric 4 having a small dielectric constant, so that the metal rod 5 embedded in the dielectric 3 is also cathode 2.
Move to the side. Especially when the dielectric 4 is air, the dielectric 3
The metal rod 5 embedded in the electrode moves to the cathode 2 side together with the dielectric 3. When the tip 11 of the metal rod 5 contacts the cathode 2,
Since a closed circuit of the metal rod 5-cathode 2-alarm power supply 7-alarm device 8 is formed, the circuit of the alarm device 8 is closed and the alarm device 8 is activated.
【００１８】以上の実施例で、マクスウェル応力による
金属棒５の移動量は極めて微量であるので、金属棒５の
先端１１と陰極２との間の間隙距離を適切に設定するこ
とが重要である。In the above embodiments, since the amount of movement of the metal rod 5 due to Maxwell stress is extremely small, it is important to properly set the gap distance between the tip 11 of the metal rod 5 and the cathode 2. .
【００１９】また以上の実施例において、警報器８をリ
レー等に置き換えることにより、高圧回路をオフする
等、多方面の処置を行うことが可能となる。Further, in the above embodiment, by replacing the alarm device 8 with a relay or the like, it is possible to perform various treatments such as turning off the high voltage circuit.
【００２０】[0020]
【発明の効果】以上説明したように本発明は、コンデン
サへの直流高電圧印加時の電界が及ぼすマクスウェル応
力により誘電体が移動することを、スイッチ投入に直接
利用したので、その構成は極めてシンプルであり、装置
の信頼性，小型化に大きな効果がある。As described above, according to the present invention, the fact that the dielectric moves due to the Maxwell stress exerted by the electric field when a high DC voltage is applied to the capacitor is directly used for switching on, so that the configuration is extremely simple. Therefore, there is a great effect on the reliability and downsizing of the device.
【図１】本発明の構成を示す図である。FIG. 1 is a diagram showing a configuration of the present invention.
１ 金属板（陽極） ２ 金属板（陰極） ３ 誘電体（誘電率ε1 ） ４ 誘電体（誘電率ε2 ） ５ 金属棒 ６ 直流高電圧源 ７ 警報用電源 ８ 警報器 ９ 高電圧検出端子 １０ コンデンサ １１ 金属棒の先端1 metal plate (anode) 2 metal plate (cathode) 3 dielectric (dielectric constant ε 1 ) 4 dielectric (dielectric constant ε 2 ) 5 metal rod 6 DC high voltage source 7 alarm power supply 8 alarm device 9 high voltage detection terminal 10 Capacitor 11 Tip of metal rod
Claims (1)
体を設け、第１誘電体の上面に誘電率がε 2 （ただし、
ε 2 ＜ε 1 ）の第２誘電体を設け、第２誘電体の上面に
第２電極を設けてコンデンサを構成し、一端が第２電極
と微小距離隔てて配置されるように第１誘電体中に金属
棒を設け、漏洩した高電圧を検出する端子又はスイッチ
よりなる高電圧検出端子の一方を第１電極に他方を直流
高電圧源の高圧側に接続し、直流高電圧源の低圧側を第
２電極に接続し、金属棒の他端を警報器の一端に接続
し、警報器の他端を警報用電源を介して第２電極に接続
したことを特徴とする高電圧検出警報装置。1. A first dielectric having a dielectric constant of ε 1 on the upper surface of the first electrode.
Body, and the dielectric constant is ε 2 on the upper surface of the first dielectric (however,
A second dielectric with ε 2 <ε 1 ) is provided, and on the upper surface of the second dielectric
A second electrode is provided to form a capacitor, and one end is the second electrode
And a metal in the first dielectric so that they are separated by a minute distance.
A terminal or switch equipped with a rod to detect leaked high voltage
One of the high-voltage detection terminals is a first electrode and the other is a direct current
Connect to the high voltage side of the high voltage source and connect the low voltage side of the DC high voltage
Connect to 2 electrodes, connect the other end of the metal rod to one end of the alarm
And connect the other end of the alarm device to the second electrode via the alarm power supply.
High voltage detection alarm device, characterized in that the.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15530193A JPH0827303B2 (en) | 1993-06-25 | 1993-06-25 | High voltage detection alarm device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15530193A JPH0827303B2 (en) | 1993-06-25 | 1993-06-25 | High voltage detection alarm device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0712856A JPH0712856A (en) | 1995-01-17 |
| JPH0827303B2 true JPH0827303B2 (en) | 1996-03-21 |
Family
ID=15602910
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP15530193A Expired - Lifetime JPH0827303B2 (en) | 1993-06-25 | 1993-06-25 | High voltage detection alarm device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0827303B2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| ES2184604B1 (en) * | 2001-03-30 | 2004-05-01 | Grupo Ormazabal, S.A. | SOUND ALARM PREVENTION SYSTEM FOR GROUNDING IN HIGH VOLTAGE CELLS. |
-
1993
- 1993-06-25 JP JP15530193A patent/JPH0827303B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0712856A (en) | 1995-01-17 |
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