JPH0441338Y2 - - Google Patents

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Publication number
JPH0441338Y2
JPH0441338Y2 JP1986119492U JP11949286U JPH0441338Y2 JP H0441338 Y2 JPH0441338 Y2 JP H0441338Y2 JP 1986119492 U JP1986119492 U JP 1986119492U JP 11949286 U JP11949286 U JP 11949286U JP H0441338 Y2 JPH0441338 Y2 JP H0441338Y2
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JP
Japan
Prior art keywords
voltage
resistor
probe
sensor
static electricity
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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
Application number
JP1986119492U
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Japanese (ja)
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JPS6325380U (en
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Priority to JP1986119492U priority Critical patent/JPH0441338Y2/ja
Publication of JPS6325380U publication Critical patent/JPS6325380U/ja
Application granted granted Critical
Publication of JPH0441338Y2 publication Critical patent/JPH0441338Y2/ja
Expired legal-status Critical Current

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  • Measurement Of Current Or Voltage (AREA)
  • Measuring Instrument Details And Bridges, And Automatic Balancing Devices (AREA)
  • Measuring Leads Or Probes (AREA)

Description

【考案の詳細な説明】 〈産業上の利用分野〉 この考案は帯電している流体、粉体の静電気を
光学式方式を用いて測定する静電気検出装置用の
分割型静電気検出プローブに関するものである。[Detailed description of the invention] <Industrial application field> This invention relates to a split-type static electricity detection probe for use in a static electricity detection device that uses an optical method to measure the static electricity of charged fluids and powders. .

〈従来の技術〉 例えば化学プラントのタンクや送出管内におけ
る粉体あるいは液体等の流体（以下流体等と略
す）には、パイプやポンプ、フイルタなどに接触
するとき帯電し、電荷が蓄積して流体等が高電位
になる現象がよく知られており、このとき帯電し
た流体等と金属体の間で火花放電が生じると、爆
発や火災の危険性がある。<Prior art> For example, fluids such as powders or liquids (hereinafter referred to as fluids) in tanks and delivery pipes of chemical plants become electrically charged when they come into contact with pipes, pumps, filters, etc. It is well known that materials such as metal objects become at a high potential, and if a spark discharge occurs between the charged fluid and the metal object, there is a risk of explosion or fire.

上記のような危険を事前に予知し、安全に作業
するため、静電気発生レベルを光学式方法を用い
て測定する静電気検出装置が提案されている。 In order to predict the above dangers in advance and work safely, a static electricity detection device has been proposed that measures the level of static electricity generation using an optical method.

従来の静電気検出装置は、第２図に示すよう
に、フランジ１を有するセンサ収納箱２の前面に
プローブ支持金具３を介して絶縁パイプ４を取付
け絶縁パイプ４の先端に検出電極５を設けると共
に、絶縁パイプ４の内部に電極５と接続した高抵
抗器６を収納し、センサ収納箱２内に収納した電
気光学効果を利用した光学式電圧センサ７と高抵
抗器６をリード線８で接続して静電気プローブを
形成し、電圧センサ７とＯ／Ｅ、Ｅ／Ｏ、演算増
幅器及び表示部９を光フアイバ１０で接続して構
成されている。 As shown in FIG. 2, the conventional static electricity detection device has an insulated pipe 4 mounted on the front surface of a sensor storage box 2 having a flange 1 via a probe support fitting 3, and a detection electrode 5 provided at the tip of the insulated pipe 4. A high resistor 6 connected to an electrode 5 is housed inside the insulated pipe 4, and the high resistor 6 is connected to an optical voltage sensor 7 using an electro-optic effect housed inside the sensor storage box 2 using a lead wire 8. A static electricity probe is formed by connecting a voltage sensor 7, an O/E, an E/O, an operational amplifier, and a display section 9 with an optical fiber 10.

上記のような静電気検出装置では、検出電極５
で検出した静電気を高抵抗器６で抵抗分圧して電
圧センサ７に加え、電圧センサのポツケルス効果
により電圧変化を光強度変化として検出し、表示
部９で表示するものである。 In the static electricity detection device as described above, the detection electrode 5
The static electricity detected is resistively divided by a high resistor 6 and applied to a voltage sensor 7, and the voltage change is detected as a light intensity change by the Pockels effect of the voltage sensor, and the result is displayed on a display section 9.

〈考案が解決しようとする問題点〉 ところで、従来の静電気検出プローブは、１本
の絶縁パイプ４内に高抵抗器６の高圧抵抗器R1
と低圧抵抗器R2を一体に収納した構造であるた
め両抵抗器R1とR2の抵抗比で決まる分圧比が固
定化され、異なつた分圧比が必要な場合、新たな
プローブを用意しなければならず、経済的負担が
大きくなるという問題がある。<Problems to be solved by the invention> By the way, the conventional static electricity detection probe has a high voltage resistor R1 of the high resistor 6 in one insulated pipe 4.
Since the structure houses the and low voltage resistor R 2 in one piece, the voltage division ratio determined by the resistance ratio of both resistors R 1 and R 2 is fixed. If a different voltage division ratio is required, a new probe can be prepared. However, there is a problem in that the economic burden increases.

〈考案の目的〉 この考案は上記のような問題点を解決するため
になされたものであり、部分的な取替のみで各種
分圧比を得ることができる静電気検出プローブを
提供することを目的とする。<Purpose of the invention> This invention was made to solve the above-mentioned problems, and the purpose is to provide an electrostatic detection probe that can obtain various partial pressure ratios with only partial replacement. do.

〈問題点を解決するための手段〉 上記のような問題点を解決するため、この考案
は、絶縁パイプを高圧抵抗器収納部と低圧抵抗器
収納部に分割し、両収納部を両抵抗器の接続がで
きるように着脱自在に連結した構造としたもので
ある。<Means for solving the problem> In order to solve the above problems, this invention divides the insulated pipe into a high-voltage resistor storage area and a low-voltage resistor storage area, and connects both storage areas to both resistor storage areas. It has a structure in which it is detachably connected so that it can be connected.

〈作用〉 絶縁パイプの高圧抵抗器収納部と低圧抵抗器収
納部を連結すると両抵抗器が直列に接続されたプ
ローブが組上がり、先端に設けた検出電極で検出
した静電気を高抵抗器で抵抗分圧して電圧センサ
に加え、電圧変化を光強度変化として検出し、こ
れを表示するものである。<Function> When the high-voltage resistor storage part and the low-voltage resistor storage part of the insulated pipe are connected, a probe is assembled in which both resistors are connected in series, and the high-voltage resistor detects static electricity with the detection electrode provided at the tip. It divides the voltage and applies it to a voltage sensor, detects the voltage change as a change in light intensity, and displays this.

高圧抵抗器の抵抗値が異なる複数種類の高圧抵
抗器収納部を用意し低圧抵抗器との抵抗比が所望
の比になる高圧抵抗器収納部を選んで使用すれば
必要とする分圧比を得ることができる。 Prepare multiple types of high-voltage resistor housings with different high-voltage resistor resistance values, and select and use the high-voltage resistor housing that provides the desired resistance ratio with the low-voltage resistor to obtain the required voltage division ratio. be able to.

〈実施例〉 以下、この考案の実施例を第１図にもとづいて
説明する。<Example> Hereinafter, an example of this invention will be described based on FIG. 1.

同図のように、プローブ１１は、絶縁パイプ１
２の先端に鋼やアルミニウム、真鍮で形成した検
出電極１３を取付け、絶縁パイプ１２の内部に検
出電極１３と接続され、この電極１３の検出電圧
を分圧する高抵抗器１４を収納し、絶縁パイプ１
２の他端にプローブ支持金具１５を介して結合し
たセンサ収納ケース１６内に前記高抵抗器１４と
接続され、分圧された電圧を検出する電気光学効
果を利用した光学式電圧センサ１７を組込み、こ
の電圧センサ１７とコネクタ１８で接続したケー
ス内光フアイバ１９とＯ／Ｅ、Ｅ／Ｏ、演算増幅
器及び表示部９に連なるケース外部の光フアイバ
２０を気密コネクタ２１で接続して構成されてい
る。 As shown in the figure, the probe 11 is connected to the insulated pipe 1
A detection electrode 13 made of steel, aluminum, or brass is attached to the tip of the insulated pipe 12, and a high resistor 14 that is connected to the detection electrode 13 and divides the detection voltage of this electrode 13 is housed inside the insulated pipe 12. 1
An optical voltage sensor 17 that is connected to the high resistor 14 and utilizes an electro-optic effect to detect a divided voltage is incorporated in a sensor storage case 16 that is connected to the other end of 2 via a probe support fitting 15. , an optical fiber 19 inside the case connected to this voltage sensor 17 with a connector 18 and an optical fiber 20 outside the case connected to the O/E, E/O, operational amplifier, and display section 9 are connected with an airtight connector 21. There is.

前記高抵抗器１４はグレース抵抗と呼ばれる金
属とガラス混和物で形成されたものを用い、その
抵抗値は108〜1013Ωであり、高圧抵抗器R1と低
圧抵抗器R2を直列に接続し、高圧抵抗器R1を検
出電極１３とリード線で接続し、低圧抵抗器R2
の接地線２２がセンサ収納ケース１６の外部へ気
密状に引出されている。 The high resistor 14 is made of a mixture of metal and glass called a Grace resistor, and has a resistance value of 10 8 to 10 13 Ω.A high voltage resistor R 1 and a low voltage resistor R 2 are connected in series. Connect the high voltage resistor R 1 to the detection electrode 13 with a lead wire, and connect the low voltage resistor R 2
A grounding wire 22 is drawn out to the outside of the sensor storage case 16 in an airtight manner.

上記プローブ１１における絶縁パイプ１２は、
その途中から前後に二分割され、先端側に位置す
る高圧抵抗器R1の収納部１２ａと、センサ収納
ケース１６側に位置する低圧抵抗器R2の収納部
１２ｂになつている。 The insulated pipe 12 in the probe 11 is
It is divided into two parts in the front and back from the middle, with a storage part 12a for the high voltage resistor R1 located on the tip side and a storage part 12b for the low voltage resistor R2 located on the sensor storage case 16 side.

高圧抵抗器R1の収納部１２ａは、その先端に
検出電極１３が取付けられ、両収納部１２ａと１
２ｂは、図示詳細を省略したがねじ式や差込み構
造の絶縁物継手によつて着脱自在に連結されると
共に、高圧抵抗器R1と低圧抵抗器R2は一対の接
続用継手２３，２４により両収納部１２ａと１２
ｂの結合と同時に直列に接続されるようになつて
いる。 A detection electrode 13 is attached to the tip of the housing part 12a of the high voltage resistor R1 , and both housing parts 12a and 1
2b is detachably connected by an insulating joint of screw type or plug-in structure, although the details are omitted from illustration, and the high voltage resistor R 1 and low voltage resistor R 2 are connected by a pair of connection joints 23 and 24. Both storage parts 12a and 12
They are connected in series at the same time as the connection of b.

上記高圧抵抗器の収納部１２ａは、高圧抵抗器
R1の抵抗値が異なるものを複数種類用意し、所
望する抵抗値の収納部１２ａを選んで用いること
により、低圧抵抗器R2との抵抗比を自由に変化
させることができ、任意の分圧比を得ることがで
きる。 The high voltage resistor storage section 12a is a high voltage resistor storage section 12a.
By preparing multiple types of R 1 with different resistance values and selecting and using the storage section 12a with the desired resistance value, the resistance ratio with the low voltage resistor R 2 can be freely changed, and the resistance ratio with the low voltage resistor R 2 can be changed as desired. The pressure ratio can be obtained.

この考案のプローブは上記のような構造であ
り、粉体に対する静電気の検出を行なつた場合、
静電気発生レベルで通常問題となるのは1KV〜
50KV程度のレベルである。 The probe of this invention has the above structure, and when detecting static electricity on powder,
The static electricity generation level that usually causes problems is 1KV~
The level is about 50KV.

一方電圧センサ１３の耐電圧値を考慮すると直
接電圧センサ１７に入力できる電圧の上限は１〜
2KV程度であり、これ以上は電圧センサ１７に
直接電圧をかけられない。 On the other hand, considering the withstand voltage value of the voltage sensor 13, the upper limit of the voltage that can be directly input to the voltage sensor 17 is 1 to
The voltage is about 2KV, and no voltage can be directly applied to the voltage sensor 17 beyond this value.

そこで、高抵抗器１４で電圧を分担し、その出
力を電圧センサ１７で検出する。 Therefore, the voltage is shared by the high resistor 14, and the output thereof is detected by the voltage sensor 17.

電圧センサ１７の絶縁抵抗器をRsとし、高抵
抗器をR1，R2とすると分圧比ｒは以下の式で与
えられる。 If the insulation resistor of the voltage sensor 17 is Rs, and the high resistors are R 1 and R 2 , the voltage division ratio r is given by the following formula.

ｒ＝R2・Rs／R1R2＋R1Rs＋R2Rs 絶縁体に生じた電位を計測するためには分圧抵
抗の値は充分高い必要があり R1１×1012Ω R2１×1011Ωを使用す
る。 r=R 2・Rs/R 1 R 2 +R 1 Rs+R 2 Rs In order to measure the potential generated in the insulator, the value of the voltage dividing resistor must be sufficiently high. R 1 1×10 12 Ω R 2 1× Use 10 11 Ω.

また電圧センサ１７の抵抗Rsは室温で約１×
1012Ωである。これらの抵抗器を使えば電圧を約
１／１０に分圧することができる。 Also, the resistance Rs of the voltage sensor 17 is approximately 1× at room temperature.
10 12 Ω. By using these resistors, the voltage can be divided to about 1/10.

〈効果〉 以上のように、この考案によると、プローブの
絶縁パイプを高圧抵抗器の収納部と低圧抵抗器の
収納部に分割し、両収納部を着脱自在に結合した
ので、高圧抵抗器の抵抗値が異なる複数種類の収
納部を用意することにより、高圧抵抗器と低圧抵
抗器の抵抗比を自由に組合せることができ、任意
の分圧比を得ることができる。<Effects> As described above, according to this invention, the insulated pipe of the probe is divided into a high-voltage resistor housing part and a low-voltage resistor housing part, and both housing parts are removably connected. By preparing a plurality of types of storage sections having different resistance values, it is possible to freely combine the resistance ratios of the high-voltage resistors and the low-voltage resistors, and it is possible to obtain an arbitrary voltage division ratio.

また、高圧抵抗器の収納部を差し変えるだけで
所定の分圧比のプローブが得られ、分圧比の変化
に対応した新たなプローブ全体を製作する必要が
なく、経済的にも有利である。 In addition, a probe with a predetermined voltage division ratio can be obtained by simply replacing the storage portion of the high voltage resistor, and there is no need to manufacture a whole new probe corresponding to a change in the voltage division ratio, which is economically advantageous.

【図面の簡単な説明】[Brief explanation of the drawing]

第１図はこの考案に係るプローブの正面図、第
２図は従来のプローブの正面図である。 １１……プローブ、１２……絶縁パイプ、１２
ａ，１２ｂ……収納部、１３……検出電極、１４
……高抵抗器、１６……センサ収納ケース、１７
……光学式電圧センサ、R1……高圧抵抗器、R2
……低圧抵抗器。 FIG. 1 is a front view of a probe according to this invention, and FIG. 2 is a front view of a conventional probe. 11...Probe, 12...Insulated pipe, 12
a, 12b... Storage section, 13... Detection electrode, 14
...High resistor, 16...Sensor storage case, 17
...Optical voltage sensor, R 1 ...High voltage resistor, R 2
...Low voltage resistor.

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] 先端に検出電極を取付けた絶縁パイプの内部
に、検出電極と接続され、この電極の検出電圧を
分圧する高抵抗器を収納し、前記絶縁パイプにプ
ローブ支持金具を介してセンサ収納ケースを設
け、このケース内に高抵抗器と接続され、分圧さ
れた電圧を検出する電気光学効果を利用した光学
式電圧センサを組込み、前記電圧センサに信号を
外部に取出す光フアイバを接続した流体又は粉体
用の静電気検出プローブにおいて、絶縁パイプを
高圧抵抗器収納部と低圧抵抗器収納部に分割し、
両収納部を両抵抗器の接続ができるように着脱自
在に連結したことを特徴とする静電気検出プロー
ブ。 A high resistor that is connected to the detection electrode and divides the detection voltage of the electrode is housed inside an insulated pipe with a detection electrode attached to the tip thereof, and a sensor storage case is provided on the insulated pipe via a probe support fitting, An optical voltage sensor using an electro-optic effect that is connected to a high resistance resistor and detects a divided voltage is built into the case, and an optical fiber is connected to the voltage sensor to extract the signal to the outside of the fluid or powder. In the static electricity detection probe for
A static electricity detection probe characterized in that both housing parts are detachably connected so that both resistors can be connected.
JP1986119492U 1986-08-04 1986-08-04 Expired JPH0441338Y2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1986119492U JPH0441338Y2 (en) 1986-08-04 1986-08-04

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1986119492U JPH0441338Y2 (en) 1986-08-04 1986-08-04

Publications (2)

Publication Number Publication Date
JPS6325380U JPS6325380U (en) 1988-02-19
JPH0441338Y2 true JPH0441338Y2 (en) 1992-09-29

Family

ID=31006915

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1986119492U Expired JPH0441338Y2 (en) 1986-08-04 1986-08-04

Country Status (1)

Country Link
JP (1) JPH0441338Y2 (en)

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6082270U (en) * 1983-11-11 1985-06-07 住友電気工業株式会社 partial pressure probe

Also Published As

Publication number Publication date
JPS6325380U (en) 1988-02-19

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