JPS6141252B2 - - Google Patents
Info
- Publication number
- JPS6141252B2 JPS6141252B2 JP13409483A JP13409483A JPS6141252B2 JP S6141252 B2 JPS6141252 B2 JP S6141252B2 JP 13409483 A JP13409483 A JP 13409483A JP 13409483 A JP13409483 A JP 13409483A JP S6141252 B2 JPS6141252 B2 JP S6141252B2
- Authority
- JP
- Japan
- Prior art keywords
- discharge electrode
- hammering
- voltage
- dust
- 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
Links
- 239000000428 dust Substances 0.000 claims description 28
- 239000012717 electrostatic precipitator Substances 0.000 claims description 13
- 238000001514 detection method Methods 0.000 claims description 3
- 238000000034 method Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 3
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000007790 scraping Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03C—MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03C3/00—Separating dispersed particles from gases or vapour, e.g. air, by electrostatic effect
- B03C3/34—Constructional details or accessories or operation thereof
- B03C3/74—Cleaning the electrodes
- B03C3/76—Cleaning the electrodes by using a mechanical vibrator, e.g. rapping gear ; by using impact
- B03C3/763—Electricity supply or control systems therefor
Landscapes
- Engineering & Computer Science (AREA)
- Automation & Control Theory (AREA)
- Mechanical Engineering (AREA)
- Electrostatic Separation (AREA)
Description
【発明の詳細な説明】
本発明は電気集塵装置に係り、特に複数の集塵
極と各集塵極間に対向して配置された放電極とを
備え、高抵抗ダストを捕集する電気集塵装置の制
御装置に関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an electrostatic precipitator, and more particularly, the present invention relates to an electrostatic precipitator that is equipped with a plurality of dust collecting electrodes and a discharge electrode disposed facing each other between the dust collecting electrodes, and that collects high-resistance dust. The present invention relates to a control device for a dust collector.
一般に電気集塵装置内の集塵極、放電極に高抵
抗ダストがある量付着した場合、逆電離現象が発
生し、各電極へ印加される直流高電圧の電圧−電
流特性は第１図、第２図の如き様相を呈し、集塵
機能が大幅に低下する欠点がある。即ち第１図で
は集塵極に高抵抗ダストが付着した場合の電圧−
電流特性を示し、実線が正常電離状態を示し、破
線が逆電離状態を示している。また第２図では放
電極に高抵抗ダストが付着した場合の電圧−電流
特性を示し、実線が正常電離状態を示し破線が逆
電離状態を示している。 Generally, when a certain amount of high-resistance dust adheres to the dust collection electrode and discharge electrode in an electrostatic precipitator, a reverse ionization phenomenon occurs, and the voltage-current characteristics of the DC high voltage applied to each electrode are shown in Figure 1. The situation as shown in FIG. 2 is exhibited, and there is a drawback that the dust collection function is significantly reduced. In other words, in Figure 1, the voltage when high resistance dust adheres to the dust collecting electrode is -
The current characteristics are shown, with the solid line showing the normal ionization state and the broken line showing the reverse ionization state. Further, FIG. 2 shows voltage-current characteristics when high-resistance dust adheres to the discharge electrode, where a solid line indicates a normal ionization state and a broken line indicates a reverse ionization state.
従来、電気集塵装置においてはこのような逆電
離現象の発生に対して主として集塵極側のダスト
堆積対策として、
(1) 特殊荷電方式等の荷電技術による方法
(2) 加熱集塵電極や槌打装置の替わりに極板表面
ダストを掻落す方式等集塵極構造による方法
(3) 電気集塵装置の入口ガスを調湿する方法
等が提案されており、放電極側に対しては何の配
慮も為されていなかつた。即ち集塵極と同様に放
電極へのダスト堆積防止も安定荷電や集塵機能の
維持の面で重要性があるにも拘わらず何の対策も
施されていなかつた。 Conventionally, in electrostatic precipitators, the main countermeasures against the occurrence of such reverse ionization phenomena are: (1) methods using charging technology such as special charging methods, (2) heating dust collecting electrodes, Methods using a dust collecting electrode structure, such as a method of scraping off dust on the electrode plate surface instead of a hammering device (3) A method of controlling the humidity of the inlet gas of an electrostatic precipitator, etc. have been proposed. No consideration was given. That is, like the dust collecting electrode, no measures have been taken to prevent dust from accumulating on the discharge electrode, even though this is important in terms of stable charging and maintaining the dust collecting function.
本発明は逆電離時における電圧−電流特性のヒ
ステリシス現象が放電極に堆積したダストによつ
て主に発生することを突き止め、このことに基づ
き逆電離が集塵極に堆積したダストに起因するか
放電極に堆積したダストに起因するかを判別し、
その結果により放電極に対する槌打機構駆動用モ
ータを制御し、逆電離現象に対する対策を放電極
側に施し、集塵機能を低下させないことを目的と
している。 The present invention has found that the hysteresis phenomenon in voltage-current characteristics during reverse ionization is mainly caused by dust deposited on the discharge electrode, and based on this, it is possible to determine whether reverse ionization is caused by dust deposited on the collecting electrode. Determine whether it is caused by dust deposited on the discharge electrode,
Based on the results, the motor for driving the hammering mechanism for the discharge electrode is controlled, and countermeasures against the reverse ionization phenomenon are taken on the discharge electrode side, with the aim of not reducing the dust collection function.
本発明は前記目的を達成する為に放電極の電流
ヒステリシス値を検出する検出器を設け、該検出
器からの検出値に応じて放電極の槌打機構駆動用
モータを制御し、槌打インターバルの調節又は槌
打力を調整する制御装置を設けたことを特徴とす
る。 In order to achieve the above object, the present invention provides a detector for detecting the current hysteresis value of the discharge electrode, controls the motor for driving the hammering mechanism of the discharge electrode according to the detected value from the detector, and controls the hammering interval. The present invention is characterized in that it is provided with a control device that adjusts the adjustment or the hammering force.
以下添付図面に従つて本発明に係る電気集塵装
置の制御装置の好ましい実施例を詳説する。 Preferred embodiments of a control device for an electrostatic precipitator according to the present invention will be described in detail below with reference to the accompanying drawings.
第３図において電気集塵装置の制御装置の概略
構造が示され、１０は電気集塵装置、この電気集
塵装置１０内には所定間隔で図示しない集塵電極
が配設され、この集塵電極の間には放電極１２が
配設されている。この放電極１２には直流発生装
置１４から直流高電圧が印加される。また１６は
放電極槌打装置、１８は槌打装置１６の駆動モー
タ、２０は駆動モータ１８の制御部である。 In FIG. 3, a schematic structure of a control device for an electrostatic precipitator is shown, and 10 is an electrostatic precipitator. Inside this electrostatic precipitator 10, dust collecting electrodes (not shown) are arranged at predetermined intervals. A discharge electrode 12 is arranged between the electrodes. A high DC voltage is applied to this discharge electrode 12 from a DC generator 14 . Further, 16 is a discharge electrode hammering device, 18 is a drive motor of the hammering device 16, and 20 is a control section for the drive motor 18.
一方直流発生装置１４に交流高電圧を出力する
変圧器２２、変圧器２２の出力を整流する整流器
２４が設けられ、整流器２４と直列に電流検出器
２６が設けられ、また整流器２４と並列に電圧検
出器２８が設けられている。電流検出器２６並び
に電圧検出器２８の検出信号は制御部３０に入力
される。この制御部３０は両検出器２６，２８の
検出に基づいてモータ駆動用制御部２０並びに直
流発生装置１４の出力を制御する。 On the other hand, the DC generator 14 is provided with a transformer 22 that outputs an AC high voltage, a rectifier 24 that rectifies the output of the transformer 22, a current detector 26 is provided in series with the rectifier 24, and a voltage detector 26 is provided in parallel with the rectifier 24. A detector 28 is provided. Detection signals from the current detector 26 and voltage detector 28 are input to the control section 30. This control section 30 controls the output of the motor drive control section 20 and the DC generator 14 based on the detections of both the detectors 26 and 28.
前記の如く構成された本発明に係る実施例の作
用は次の通りである。まず実施例に於いては一日
一回程度直流発生装置１４の出力電流を増減し、
第２図に示すような電圧−電流特性をサンプリン
グする。即ち電流検出器２６、電圧検出器２８か
らの値に基づき、、放電極の電圧−電流特性をと
り、ある印加電圧ａ点における電流ヒステリシス
値（ｃ−ｂ）を得、この値の大小から駆動モータ
１８を制御する。即ちこのヒステリシス値が大き
い時には逆電離現象発生の原因は主として放電極
１２側にあるので、放電極１２にダストが付着し
ていると考えられ、従つて制御部２０に制御部３
０から指令信号が入力され、モータ１８を制御す
ることにより槌打のインターバルを早めたり、槌
打力を強くしたりする。槌打回数、又は槌打力の
強弱はヒステリシス値の大小によつて決定され
る。尚出力電流を変化させる際には、通常運転時
よりは印加電圧を一旦下げ、コロナ開始電圧（コ
ロナ電流を発生し始める電圧）からスタートしヒ
ステリシス特性を検出することが好ましい。通常
運転時からスタートしてヒステリシス特性を検出
すると明確なヒステリシス特性は得にくい。 The operation of the embodiment according to the present invention constructed as described above is as follows. First, in the embodiment, the output current of the DC generator 14 is increased or decreased about once a day.
The voltage-current characteristics as shown in FIG. 2 are sampled. That is, based on the values from the current detector 26 and the voltage detector 28, the voltage-current characteristics of the discharge electrode are taken, the current hysteresis value (c-b) at a certain applied voltage point a is obtained, and the drive is determined based on the magnitude of this value. The motor 18 is controlled. That is, when this hysteresis value is large, the cause of the occurrence of the reverse ionization phenomenon is mainly on the discharge electrode 12 side, so it is considered that dust has adhered to the discharge electrode 12, and therefore the controller 3
A command signal is input from 0, and by controlling the motor 18, the hammering interval is accelerated and the hammering force is increased. The number of hammer strikes or the strength of the hammer strike force is determined by the magnitude of the hysteresis value. When changing the output current, it is preferable to once lower the applied voltage than during normal operation, start from the corona start voltage (voltage at which corona current starts to be generated), and detect the hysteresis characteristic. If hysteresis characteristics are detected starting from normal operation, it is difficult to obtain clear hysteresis characteristics.
尚ヒステリシス値の値が小さい場合には、逆電
離現象の発生は集塵極側に原因があると考えられ
るので、集塵極側のダスト脱離手段（槌打機構、
ブラシ等）の駆動機構を調節する。 If the hysteresis value is small, the occurrence of the reverse ionization phenomenon is thought to be caused by the dust collecting electrode, so the dust removal means (hammering mechanism, hammering mechanism,
(brush, etc.) drive mechanism.
前記実施例に於いて放電極槌打機構は種々のも
のが考えられ、機械式の回転ハンマ方式、電磁槌
打方式等の機構が考えられる。 In the embodiments described above, various types of discharge electrode hammering mechanism can be considered, including a mechanical rotary hammer type, an electromagnetic hammer type, and the like.
以上説明したように本発明に係る電気集塵装置
の制御装置によれば逆電離現象発生時に放電極側
の電圧−電流特性を検出し、この電圧−電流特性
にヒステリシスが発生した場合に放電極側の槌打
機構の駆動モータを制御し、放電極側のダストを
除去し逆電離現象の発生を防止することができ
る。 As explained above, according to the control device for an electrostatic precipitator according to the present invention, the voltage-current characteristic on the discharge electrode side is detected when a reverse ionization phenomenon occurs, and when hysteresis occurs in this voltage-current characteristic, the discharge electrode By controlling the drive motor of the hammering mechanism on the side, dust on the discharge electrode side can be removed and the occurrence of reverse ionization phenomenon can be prevented.
第１図は集塵極の電圧−電流特性を示す説明
図、第２図は放電極の電圧−電流特性を示す説明
図、第３図は本実施例の概略構造を示すブロツク
図ある。
１０……電気集塵装置、１２……放電極、１４
……直流発生装置、１６……槌打機構、１８……
槌打機構駆動用モータ、２０……モータ制御部、
２６……電流検出器、２８……電圧検出器、３０
……制御部。
FIG. 1 is an explanatory diagram showing the voltage-current characteristics of the dust collecting electrode, FIG. 2 is an explanatory diagram showing the voltage-current characteristics of the discharge electrode, and FIG. 3 is a block diagram showing the schematic structure of this embodiment. 10... Electrostatic precipitator, 12... Discharge electrode, 14
...DC generator, 16... Hammering mechanism, 18...
Hammering mechanism drive motor, 20... motor control unit,
26...Current detector, 28...Voltage detector, 30
...control section.
Claims (1)
極とを備えた電気集塵装置において、放電極を槌
打する機構を駆動する駆動用モータと、所定印加
電圧における放電極の電流ヒステリシス値を検出
する検出部と、電流ヒステリシス値の大きさに応
じて放電極槌打インターバル又は槌打力を調節す
る前記モータを制御する制御部とから成ることを
特徴とする電気集塵装置の制御装置。1. In an electrostatic precipitator equipped with a dust collection electrode and a discharge electrode placed opposite to the dust collection electrode, a drive motor that drives a mechanism for hammering the discharge electrode and a drive motor that drives a mechanism for hammering the discharge electrode, and a An electrostatic precipitator comprising: a detection section that detects a current hysteresis value; and a control section that controls the motor that adjusts the discharge electrode hammering interval or hammering force according to the magnitude of the current hysteresis value. control device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13409483A JPS6025560A (en) | 1983-07-22 | 1983-07-22 | Control apparatus of electric dust collecting apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13409483A JPS6025560A (en) | 1983-07-22 | 1983-07-22 | Control apparatus of electric dust collecting apparatus |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6025560A JPS6025560A (en) | 1985-02-08 |
| JPS6141252B2 true JPS6141252B2 (en) | 1986-09-13 |
Family
ID=15120288
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP13409483A Granted JPS6025560A (en) | 1983-07-22 | 1983-07-22 | Control apparatus of electric dust collecting apparatus |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6025560A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0192650U (en) * | 1987-12-14 | 1989-06-16 |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2764116B2 (en) * | 1991-12-27 | 1998-06-11 | 本田技研工業株式会社 | Humidified gas preheater for fuel cell system |
-
1983
- 1983-07-22 JP JP13409483A patent/JPS6025560A/en active Granted
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0192650U (en) * | 1987-12-14 | 1989-06-16 |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6025560A (en) | 1985-02-08 |
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