JPWO2016067554A1 - Electric dust collector - Google Patents

Electric dust collector Download PDF

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JPWO2016067554A1
JPWO2016067554A1 JP2016556199A JP2016556199A JPWO2016067554A1 JP WO2016067554 A1 JPWO2016067554 A1 JP WO2016067554A1 JP 2016556199 A JP2016556199 A JP 2016556199A JP 2016556199 A JP2016556199 A JP 2016556199A JP WO2016067554 A1 JPWO2016067554 A1 JP WO2016067554A1
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electrode plate
charging unit
dust
charging
electrostatic precipitator
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JP6684986B2 (en
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光 村田
光 村田
篤史 片谷
篤史 片谷
洋 細野
細野　　洋
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Panasonic Intellectual Property Management Co Ltd
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    • 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
    • B03C3/02—Plant or installations having external electricity supply
    • 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
    • B03C3/40—Electrode constructions
    • 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
    • B03C3/40—Electrode constructions
    • B03C3/41—Ionising-electrodes

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Abstract

電気集塵装置の帯電部（１２）は、接地極板と荷電極板とを有する。荷電極板に高電圧を印加することで発生するグラディエント力により荷電極板および接地極板のそれぞれの端部に粉塵を堆積させることで粉塵が帯電する。The charging part (12) of the electrostatic precipitator has a ground electrode plate and a load electrode plate. Dust is charged by depositing dust on the respective ends of the load electrode plate and the ground electrode plate by a gradient force generated by applying a high voltage to the load electrode plate.

Description

本発明は、気体中の粉塵を帯電させて捕集する電気集塵装置に関する。   The present invention relates to an electrostatic precipitator that charges and collects dust in a gas.

従来の電気集塵装置は、帯電部と集塵部とを有する。帯電部は、帯電部の放電極に直流高電圧を印加し、正コロナまたは負コロナを発生させ、帯電部を通過する粉塵を正または負の電荷をもたせて帯電する。集塵部は、帯電した粉塵を直流高電圧が印加された荷電極と接地に繋がれた接地極板で集塵する。   A conventional electrostatic precipitator has a charging part and a dust collecting part. The charging unit applies a DC high voltage to the discharge electrode of the charging unit, generates a positive corona or a negative corona, and charges the dust passing through the charging unit with a positive or negative charge. The dust collecting unit collects the charged dust with a load electrode to which a direct high voltage is applied and a ground electrode plate connected to the ground.

従来、気体中の粉塵を帯電させて捕集する電気集塵装置においては、コロナ放電の高電界により発生する静電気力で帯電した粉塵を接地極板の板面上に捕集する技術が広く一般的に知られている（例えば、特許文献１参照）。   Conventionally, in electrostatic precipitators that collect dust by electrifying dust in the gas, a technique that collects dust charged by electrostatic force generated by a high electric field of corona discharge on the plate surface of the ground electrode is widely used. (For example, refer to Patent Document 1).

以下、従来の電気集塵装置の原理について図１４を参照しながら説明する。   Hereinafter, the principle of a conventional electrostatic precipitator will be described with reference to FIG.

図１４は、従来の電気集塵装置の帯電部と集塵部の構成を示す構成図である。図１４に示すように、従来の電気集塵装置は、帯電部１０４と集塵部１０５により構成されている。従来の電気集塵装置の内部に吸込まれた気体が流れる方向は、帯電部１０４から集塵部１０５へ向かう方向（図１４における左から右）である。帯電部１０４には＋１１ｋＶ、集塵部１０５には＋８．３ｋＶの直流高電圧が直流高圧電源１０９から供給される。帯電部１０４は、放電線タイプの放電極１０４Ａと接地極板１０４Ｂにより構成されている。放電極１０４Ａに＋１１ｋＶの直流高圧が印加されることで、放電極１０４Ａと接地極板１０４Ｂの間の空間に正コロナ放電が発生する。この正コロナ放電により発生した正イオンが空間中の粉塵に正の電荷を与えるため、粉塵は正に帯電する。帯電した粉塵は、集塵部１０５の荷電極板１０５Ａと接地極板１０５Ｂの間で形成される強電界により発生する静電気力で、接地極板１０５Ｂ上に捕集される。   FIG. 14 is a configuration diagram showing a configuration of a charging unit and a dust collection unit of a conventional electric dust collector. As shown in FIG. 14, the conventional electrostatic precipitator includes a charging unit 104 and a dust collecting unit 105. The direction in which the gas sucked into the conventional electrostatic precipitator flows is the direction from the charging unit 104 toward the dust collecting unit 105 (from left to right in FIG. 14). A DC high voltage of +11 kV is supplied to the charging unit 104 and +8.3 kV is supplied to the dust collecting unit 105 from a DC high voltage power source 109. The charging unit 104 includes a discharge wire type discharge electrode 104A and a ground electrode plate 104B. When a DC high voltage of +11 kV is applied to the discharge electrode 104A, a positive corona discharge is generated in the space between the discharge electrode 104A and the ground electrode plate 104B. Since positive ions generated by the positive corona discharge give a positive charge to the dust in the space, the dust is positively charged. The charged dust is collected on the ground electrode plate 105B by an electrostatic force generated by a strong electric field formed between the load electrode plate 105A and the ground electrode plate 105B of the dust collector 105.

特開平９−２２５３４０号公報JP-A-9-225340

このような電気集塵装置は、帯電部１０４において、コロナ放電による電力消費が大きいという課題があった。   Such an electrostatic precipitator has a problem that power consumption by corona discharge is large in the charging unit 104.

そこで本発明は、帯電部での電力消費を低減し、電力消費の少ない電気集塵装置を提供する。   Therefore, the present invention provides an electric dust collector that reduces power consumption in the charging unit and consumes less power.

本発明の電気集塵装置は、気体流入部および気体流出部を有するケーシングと、ケーシングの内部に設けられ、気体流入部と気体流出部の間に流れる気体中の粉塵を帯電させる帯電部と、を備える。帯電部は、荷電極板と接地極板とを有し、荷電極板に高電圧を印加することで発生するグラディエント力により荷電極板および接地極板のそれぞれの端部に粉塵を堆積させることで粉塵を帯電させる。   The electric dust collector of the present invention is a casing having a gas inflow portion and a gas outflow portion, a charging portion that is provided inside the casing and charges dust in the gas flowing between the gas inflow portion and the gas outflow portion, Is provided. The charging unit has a load electrode plate and a ground electrode plate, and dust is deposited on each end of the load electrode plate and the ground electrode plate by a gradient force generated by applying a high voltage to the load electrode plate. To charge the dust.

図１は、本発明の実施の形態１における電気集塵装置を使用したトンネル換気設備の内部を透視した斜視図である。FIG. 1 is a perspective view of the inside of a tunnel ventilation facility using the electrostatic precipitator according to Embodiment 1 of the present invention. 図２は、図１の２−２断面の構成図である。FIG. 2 is a configuration diagram of a section 2-2 in FIG. 図３は、図１の３−３断面の構成図である。FIG. 3 is a configuration diagram of a section 3-3 in FIG. 図４は、本発明の実施の形態１における電気集塵装置を使用したトンネル換気設備について上面から内部を透視した構成図である。FIG. 4 is a configuration diagram of the interior of the tunnel ventilation facility using the electrostatic precipitator according to Embodiment 1 of the present invention as seen through from above. 図５は、本発明の実施の形態１における電気集塵装置の構成図である。FIG. 5 is a configuration diagram of the electrostatic precipitator according to Embodiment 1 of the present invention. 図６は、本発明の実施の形態１における電気集塵装置の極板の配置を表す概念図である。FIG. 6 is a conceptual diagram showing the arrangement of the electrode plates of the electrostatic precipitator according to Embodiment 1 of the present invention. 図７は、本発明の実施の形態１における電気集塵装置の帯電部の極板の配置を表す概念図である。FIG. 7 is a conceptual diagram showing the arrangement of the electrode plates of the charging unit of the electrostatic precipitator according to Embodiment 1 of the present invention. 図８は、本発明の実施の形態１における電気集塵装置の帯電部の電界領域を表す概念図である。FIG. 8 is a conceptual diagram showing the electric field region of the charging unit of the electrostatic precipitator according to Embodiment 1 of the present invention. 図９Ａは、本発明の実施の形態１における電気集塵装置の帯電部内での粉塵の動きを表す概念図である。FIG. 9A is a conceptual diagram illustrating the movement of dust in the charging unit of the electrostatic precipitator according to Embodiment 1 of the present invention. 図９Ｂは、本発明の実施の形態１における電気集塵装置の帯電部内での粉塵の動きを表す概念図である。FIG. 9B is a conceptual diagram illustrating the movement of dust in the charging unit of the electrostatic precipitator according to Embodiment 1 of the present invention. 図１０は、本発明の実施の形態１における電気集塵装置内での粉塵の動きを表す概念図である。FIG. 10 is a conceptual diagram showing the movement of dust in the electrostatic precipitator according to Embodiment 1 of the present invention. 図１１は、本発明の実施の形態１における電気集塵装置の帯電部の極板の形状を表す側面図である。FIG. 11 is a side view showing the shape of the electrode plate of the charging unit of the electrostatic precipitator according to Embodiment 1 of the present invention. 図１２は、本発明の実施の形態１における電気集塵装置の帯電部の構成を表す組立て斜視図である。FIG. 12 is an assembled perspective view showing the configuration of the charging unit of the electrostatic precipitator according to Embodiment 1 of the present invention. 図１３は、本発明の実施の形態１における電気集塵装置の構成を表す組立て斜視図である。FIG. 13 is an assembled perspective view showing the configuration of the electrostatic precipitator according to Embodiment 1 of the present invention. 図１４は、従来の電気集塵装置の帯電部と集塵部の構成を示す構成図である。FIG. 14 is a configuration diagram showing a configuration of a charging unit and a dust collection unit of a conventional electric dust collector.

以下、本発明の実施の形態について図面を参照しながら説明する。   Hereinafter, embodiments of the present invention will be described with reference to the drawings.

（実施の形態１）
まず、本発明の電気集塵装置の一例として、トンネル換気設備に使用される電気集塵装置を図１〜図４を用いて説明する。(Embodiment 1)
First, as an example of the electric dust collector of the present invention, an electric dust collector used for a tunnel ventilation facility will be described with reference to FIGS.

図１は、本発明の実施の形態１における電気集塵装置を使用したトンネル換気設備の内部を透視した斜視図である。図２は、図１の２−２断面の構成図である。図３は、図１の３−３断面の構成図である。図４は、本発明の実施の形態１における電気集塵装置を使用したトンネル換気設備について上面から内部を透視した構成図である。   FIG. 1 is a perspective view of the inside of a tunnel ventilation facility using the electrostatic precipitator according to Embodiment 1 of the present invention. FIG. 2 is a configuration diagram of a section 2-2 in FIG. FIG. 3 is a configuration diagram of a section 3-3 in FIG. FIG. 4 is a configuration diagram of the interior of the tunnel ventilation facility using the electrostatic precipitator according to Embodiment 1 of the present invention as seen through from above.

図１〜図３に示すように、電気集塵装置３は、トンネル本線１の上部で、換気吸込口２と換気吐出口６を連通する換気風路４の内部に設けられている。   As shown in FIGS. 1 to 3, the electrostatic precipitator 3 is provided in the upper part of the main tunnel 1 and inside the ventilation air passage 4 that communicates the ventilation suction port 2 and the ventilation discharge port 6.

換気風路４の下流側には、換気ファン５が設置されている。電気集塵装置３の側方には、電気集塵補機７と、電気集塵装置３および電気集塵補機７を作動させる高圧発生盤８と、制御盤９とが設置されている。   A ventilation fan 5 is installed on the downstream side of the ventilation air passage 4. On the side of the electrostatic precipitator 3, an electrostatic precipitator 7, a high pressure generating panel 8 for operating the electrostatic precipitator 3 and the electrostatic precipitator 7, and a control panel 9 are installed.

本実施の形態では、換気風路４は３系統あり、図４に示すように、換気吸込口２、電気集塵装置３、換気風路４、換気ファン５で１系統を構成し、共通の換気吐出口６は３系統をまとめた吐出口とする。   In the present embodiment, there are three ventilation air passages 4, and as shown in FIG. 4, one system is constituted by the ventilation suction port 2, the electrostatic precipitator 3, the ventilation air passage 4, and the ventilation fan 5. The ventilation discharge port 6 is a discharge port that combines three systems.

次に、電気集塵装置３の構成について図５を用いて以下に説明する。なお、図５に示す風向とは、吸込んだ気体の流れる方向を示す。   Next, the configuration of the electrostatic precipitator 3 will be described below with reference to FIG. In addition, the wind direction shown in FIG. 5 shows the direction through which the inhaled gas flows.

図５は、本発明の実施の形態１における電気集塵装置の構成図である。   FIG. 5 is a configuration diagram of the electrostatic precipitator according to Embodiment 1 of the present invention.

図５に示すように、電気集塵装置３は、ケーシング１０と、帯電部１２および集塵部１３を有する集塵ユニット１１と、ダンパ３１と、洗浄配管３２と、配線端子箱３３とを備える。ケーシング１０には気体流入部４１と気体流出部４２とが設けられている。気体流入部４１は、集塵ユニット１１の上流側に設けられ、吸込んだ気体が流入する。気体流出部４２は、集塵ユニット１１の下流側に設けられ、吸込んだ気体が流出する。   As shown in FIG. 5, the electrostatic precipitator 3 includes a casing 10, a dust collecting unit 11 having a charging unit 12 and a dust collecting unit 13, a damper 31, a cleaning pipe 32, and a wiring terminal box 33. . The casing 10 is provided with a gas inflow portion 41 and a gas outflow portion 42. The gas inflow portion 41 is provided on the upstream side of the dust collection unit 11 and the sucked gas flows in. The gas outflow portion 42 is provided on the downstream side of the dust collection unit 11 and the sucked gas flows out.

図２にも示したように、集塵ユニット１１は、ケーシング１０の内部における気体流入部４１と気体流出部４２の間に複数個設けられている。帯電部１２は気体流入部４１側に配置され、集塵部１３は気体流出部４２側に配置されている。   As shown in FIG. 2, a plurality of dust collection units 11 are provided between the gas inflow portion 41 and the gas outflow portion 42 inside the casing 10. The charging unit 12 is disposed on the gas inflow portion 41 side, and the dust collection unit 13 is disposed on the gas outflow portion 42 side.

ダンパ３１は、集塵ユニット１１よりも上流側に設けられている。ダンパ３１は、例えば帯電部接地極板１４などの極板を水洗浄する際に閉じ、水がケーシング１０の外部へと飛散することを防止する。洗浄配管３２は、集塵ユニット１１よりも下流側の上部に設けられている。洗浄配管３２は、ケーシング１０の内部に形成されており、例えば帯電部接地極板１４などの極板や碍子２４（図１２参照）を洗浄するための配管である。洗浄配管３２の材質は、例えばステンレスまたは樹脂が好ましいが、強度を保つ構成にできれば特に限定しない。   The damper 31 is provided on the upstream side of the dust collection unit 11. The damper 31 is closed when, for example, an electrode plate such as the charging unit grounding electrode plate 14 is washed with water, and prevents the water from scattering to the outside of the casing 10. The cleaning pipe 32 is provided in the upper part on the downstream side of the dust collection unit 11. The cleaning pipe 32 is formed inside the casing 10 and is a pipe for cleaning, for example, an electrode plate such as the charging unit grounding electrode plate 14 and the insulator 24 (see FIG. 12). The material of the cleaning pipe 32 is preferably stainless steel or resin, for example, but is not particularly limited as long as the strength can be maintained.

配線端子箱３３は、集塵ユニット１１よりも下流側の下部に設けられている。配線端子箱３３は、高圧発生盤８（図１参照）からの配線を一旦端子受けする箱で、配線端子箱３３の端子から帯電部１２および集塵部１３へと配線されており、帯電部荷電極板１５および集塵部荷電極板１７に高電圧を印加する。   The wiring terminal box 33 is provided in the lower part on the downstream side of the dust collection unit 11. The wiring terminal box 33 is a box that temporarily receives the wiring from the high voltage generating board 8 (see FIG. 1), and is wired from the terminal of the wiring terminal box 33 to the charging unit 12 and the dust collecting unit 13. A high voltage is applied to the load electrode plate 15 and the dust collecting portion load electrode plate 17.

次に、集塵ユニット１１の帯電部１２の構成について図６および図７を用いて以下に説明する。   Next, the configuration of the charging unit 12 of the dust collection unit 11 will be described below with reference to FIGS. 6 and 7.

図６は、本発明の実施の形態１における電気集塵装置の極板の配置を表す概念図である。図７は、本発明の実施の形態１における電気集塵装置の帯電部の極板の配置を表す概念図である。なお、以下の説明において平行とは完全な平行を意味するのではなく、数度程度傾いた略平行も含む。   FIG. 6 is a conceptual diagram showing the arrangement of the electrode plates of the electrostatic precipitator according to Embodiment 1 of the present invention. FIG. 7 is a conceptual diagram showing the arrangement of the electrode plates of the charging unit of the electrostatic precipitator according to Embodiment 1 of the present invention. In the following description, “parallel” does not mean perfect parallel, but includes substantially parallel inclined by several degrees.

図６に示すように、集塵ユニット１１は、上流側に設けられた帯電部１２と、下流側に設けられた集塵部１３と、帯電部高圧電源１８と、集塵部高圧電源１９とを有する。   As shown in FIG. 6, the dust collection unit 11 includes a charging unit 12 provided on the upstream side, a dust collection unit 13 provided on the downstream side, a charging unit high-voltage power source 18, and a dust-collecting unit high-voltage power source 19. Have

帯電部１２は、接地極板の一例としての帯電部接地極板１４と荷電極板の一例としての帯電部荷電極板１５とを有し、それら帯電部接地極板１４と帯電部荷電極板１５が交互に、吸込んだ気体の流れる方向に対して平行に、かつ千鳥状に配置されている。帯電部接地極板１４は、上流側に形成された風上端部４３と下流側に形成された風下端部４４とを有する。帯電部荷電極板１５は、上流側に形成された風上端部４５と下流側に形成された風下端部４６とを有する。   The charging unit 12 includes a charging unit ground electrode plate 14 as an example of a ground electrode plate and a charging unit load electrode plate 15 as an example of a load electrode plate, and the charging unit ground electrode plate 14 and the charging unit load electrode plate. 15 are alternately arranged in parallel with the flow direction of the sucked gas and in a staggered manner. The charging unit grounding electrode plate 14 has a wind upper end portion 43 formed on the upstream side and a wind lower end portion 44 formed on the downstream side. The charging part load electrode plate 15 has a wind upper end part 45 formed on the upstream side and a wind lower end part 46 formed on the downstream side.

集塵部１３は、集塵部接地極板１６と集塵部荷電極板１７を、吸込んだ気体の流れる方向に対して平行に配置する。帯電部接地極板１４、帯電部荷電極板１５、集塵部接地極板１６、集塵部荷電極板１７の材料は、例えばＳＵＳ３０４などの導電性を有する材料であればよく、板厚は０．４〜０．５ｍｍが好ましい。   The dust collection part 13 arrange | positions the dust collection part grounding electrode plate 16 and the dust collection part load electrode plate 17 in parallel with the direction where the inhaled gas flows. The material of the charging unit ground electrode plate 14, the charging unit load electrode plate 15, the dust collection unit ground electrode plate 16, and the dust collection unit load electrode plate 17 may be any material having conductivity, such as SUS304. 0.4 to 0.5 mm is preferable.

帯電部高圧電源１８は、帯電部荷電極板１５を荷電する。集塵部高圧電源１９は、集塵部荷電極板１７を荷電する。   The charging unit high-voltage power supply 18 charges the charging unit load electrode plate 15. The dust collector high-voltage power supply 19 charges the dust collector load electrode plate 17.

図７は、本発明の実施の形態１における電気集塵装置の帯電部の極板配置を表す概念図である。   FIG. 7 is a conceptual diagram showing the electrode plate arrangement of the charging unit of the electrostatic precipitator according to Embodiment 1 of the present invention.

図７に示すように、例えば、帯電部接地極板１４の奥行き（長さ）Ｇおよび帯電部荷電極板１５の奥行き（長さ）Ｅは、それぞれ４５ｍｍである。帯電部接地極板１４の端部間隔ｇおよび帯電部荷電極板１５の端部間隔ｅは、それぞれ２５ｍｍである。帯電部接地極板１４と帯電部荷電極板１５の側面視における気体の流れる方向において重なる重なり部の長さＬは、１０ｍｍである。帯電部接地極板１４と帯電部荷電極板１５の極板間隔Ｄは、１０ｍｍである。   As shown in FIG. 7, for example, the depth (length) G of the charging unit grounding electrode plate 14 and the depth (length) E of the charging unit load electrode plate 15 are 45 mm, respectively. The end portion interval g of the charging portion ground electrode plate 14 and the end portion interval e of the charging portion load electrode plate 15 are each 25 mm. The length L of the overlapping portion overlapping in the gas flow direction in the side view of the charging portion grounding electrode plate 14 and the charging portion load electrode plate 15 is 10 mm. The electrode gap D between the charging portion ground electrode plate 14 and the charging portion load electrode plate 15 is 10 mm.

以上で説明した本実施の形態の電気集塵装置３による集塵方法について以下に説明する。なお、気体の一例として空気を用いて以下説明する。   The dust collection method by the electric dust collector 3 of this Embodiment demonstrated above is demonstrated below. In addition, it demonstrates below using air as an example of gas.

図１〜図３に示すように、トンネル換気設備の外の汚染された空気は、換気ファン５によって、換気吸込口２から吸い込まれ、電気集塵装置３の気体流入部４１から電気集塵装置３内へと送風される。電気集塵装置３内で集塵された空気は、電気集塵装置３の気体流出部４２から換気風路４を通って換気吐出口６へと吐出される。   As shown in FIGS. 1 to 3, the contaminated air outside the tunnel ventilation facility is sucked from the ventilation suction port 2 by the ventilation fan 5, and is discharged from the gas inlet 41 of the electrostatic dust collector 3. 3 is blown into. The air collected in the electrostatic precipitator 3 is discharged from the gas outflow portion 42 of the electrostatic precipitator 3 through the ventilation air passage 4 to the ventilation outlet 6.

電気集塵装置３は、集塵ユニット１１の帯電部１２により、換気吸込口２から吸込んだ汚染された空気中の粉塵を帯電させる。そして、集塵部１３の集塵部接地極板１６と集塵部荷電極板１７に帯電した粉塵を付着させ、汚染された空気中から粉塵を除去する。   The electrostatic precipitator 3 charges dust in the contaminated air sucked from the ventilation suction port 2 by the charging unit 12 of the dust collecting unit 11. Then, the charged dust is attached to the dust collector grounding electrode plate 16 and the dust collector load electrode plate 17 of the dust collector 13 to remove the dust from the contaminated air.

ここで、本実施の形態では、帯電部高圧電源１８を用いるが、コロナ放電を発生させず、グラディエント力と誘導帯電により帯電部接地極板１４および帯電部荷電極板１５に粉塵を付着させ、これにより粉塵を帯電させる。この作用を図８〜図１０を用いて以下に説明する。   Here, in the present embodiment, the charging unit high-voltage power supply 18 is used, but corona discharge is not generated, dust is attached to the charging unit ground electrode plate 14 and the charging unit load electrode plate 15 by a gradient force and induction charging, This charges the dust. This operation will be described below with reference to FIGS.

図８は、本発明の実施の形態１における電気集塵装置の帯電部の電界領域を表す概念図であり、図６のＡ部を拡大した図である。図９Ａは、本発明の実施の形態１における電気集塵装置の帯電部内での粉塵の動きを表す概念図である。図９Ｂは、本発明の実施の形態１における電気集塵装置の帯電部内での粉塵の動きを表す概念図である。図１０は、本発明の実施の形態１における電気集塵装置内での粉塵の動きを表す概念図である。   FIG. 8 is a conceptual diagram showing the electric field region of the charging unit of the electrostatic precipitator according to Embodiment 1 of the present invention, and is an enlarged view of part A in FIG. FIG. 9A is a conceptual diagram illustrating the movement of dust in the charging unit of the electrostatic precipitator according to Embodiment 1 of the present invention. FIG. 9B is a conceptual diagram illustrating the movement of dust in the charging unit of the electrostatic precipitator according to Embodiment 1 of the present invention. FIG. 10 is a conceptual diagram showing the movement of dust in the electrostatic precipitator according to Embodiment 1 of the present invention.

図８に示すように、帯電部高圧電源１８により帯電部荷電極板１５に正の高電圧を印加すると、帯電部荷電極板１５から帯電部接地極板１４に向かう電気力線が作用する。（図８矢印参照）この電気力線は、帯電部接地極板１４の風上端部４３と風下端部４４、および帯電部荷電極板１５の風上端部４５と風下端部４６に集中するように湾曲し、不平等電界を形成する。   As shown in FIG. 8, when a positive high voltage is applied to the charging unit load electrode plate 15 by the charging unit high-voltage power supply 18, electric lines of force acting from the charging unit load electrode plate 15 to the charging unit ground electrode plate 14 act. (See the arrows in FIG. 8) The electric lines of force are concentrated at the wind upper end 43 and the wind lower end 44 of the charging unit grounding electrode 14 and at the wind upper end 45 and the wind lower end 46 of the charging unit load electrode plate 15. To form an unequal electric field.

なお、帯電部接地極板１４の風上端部４３と風下端部４４、および帯電部荷電極板１５の風上端部４５と風下端部４６には鋭利な突起を設けていない。そのため、先述した従来の電気集塵装置の帯電部１０４（図１４参照）の放電極１０４Ａと接地極板１０４Ｂの間の空間にコロナ放電は発生しない。   It should be noted that no sharp protrusions are provided on the wind upper end 43 and the wind lower end 44 of the charging unit grounding electrode plate 14 and the wind upper end 45 and the wind lower end 46 of the charging unit load electrode plate 15. Therefore, corona discharge does not occur in the space between the discharge electrode 104A and the ground electrode plate 104B of the charging unit 104 (see FIG. 14) of the conventional electrostatic precipitator described above.

ここで、グラディエント力とは、誘電体が不平等電界中で、より強電界の方向に移動するように受ける力を指す。図８においては、電気力線が密になっている帯電部接地極板１４の両端部（風上端部４３と風下端部４４）、および帯電部荷電極板１５の両端部（風上端部４５と風下端部４６）に向けて作用する。   Here, the gradient force refers to a force that the dielectric receives so as to move in the direction of a stronger electric field in an unequal electric field. In FIG. 8, both ends of the charging unit grounding electrode plate 14 where the electric lines of force are dense (wind upper end 43 and wind lower end 44) and both ends of the charging unit load electrode plate 15 (wind upper end 45). And acts toward the wind lower end 46).

次に、帯電部１２における不平等電界中に飛来した粉塵の挙動について、図９Ａおよび図９Ｂを用いて具体的に説明する。   Next, the behavior of the dust flying in the unequal electric field in the charging unit 12 will be specifically described with reference to FIGS. 9A and 9B.

図９Ａに示すように、帯電部接地極板１４間に飛来した粉塵は、グラディエント力により、帯電部荷電極板１５の風上端部４５に引き寄せられ、堆積する。   As shown in FIG. 9A, the dust flying between the charging unit grounding electrode plates 14 is attracted to the wind upper end portion 45 of the charging unit load electrode plate 15 by a gradient force and is accumulated.

帯電部荷電極板１５の風上端部４５に引き寄せられなかった粉塵は、最初の不平等電界の領域を通過し、帯電部接地極板１４の風下端部４４に引き寄せられ、堆積する。   Dust that has not been attracted to the windward upper end portion 45 of the charging portion load electrode plate 15 passes through the region of the first unequal electric field, is attracted to the windward lower end portion 44 of the charging portion grounding electrode plate 14, and accumulates.

帯電部接地極板１４の風下端部４４に引き寄せられなかった粉塵は、２番目の不平等電界の領域を通過し、上流側から２枚目の帯電部接地極板１４の風上端部４３に引き寄せられ、堆積する。   Dust that has not been attracted to the windward lower end 44 of the charging unit grounding electrode plate 14 passes through the region of the second unequal electric field and reaches the windward upper end 43 of the second charging unit grounding electrode plate 14 from the upstream side. Attracted and deposited.

また、上流側から２枚目の帯電部接地極板１４の風上端部４３に引き寄せられなかった粉塵は、帯電部荷電極板１５の風下端部４６に引き寄せられ、堆積する。   Further, the dust that has not been attracted to the wind upper end 43 of the second charging unit grounding electrode plate 14 from the upstream side is attracted to the wind lower end 46 of the charging unit load electrode plate 15 and accumulated.

すなわち、帯電部接地極板１４と帯電部荷電極板１５は、最上流側の帯電部接地極板１４の風上端部４７を除く、両端部付近（風上端部４３、風下端部４４、風上端部４５、風下端部４６）で電気力線が密の強電界となる。これにより、帯電部接地極板１４と帯電部荷電極板１５は、不平等電界を形成し、飛来した粉塵を引き寄せ、堆積させる。   That is, the charging unit ground electrode plate 14 and the charging unit load electrode plate 15 are in the vicinity of both ends (the wind upper end portion 43, the wind lower end portion 44, the wind lower end portion) except for the wind upper end portion 47 of the most upstream charging unit ground electrode plate 14. The electric field lines become a dense strong electric field at the upper end 45 and the lower wind end 46). As a result, the charging unit grounding electrode plate 14 and the charging unit load electrode plate 15 form an unequal electric field, attracting and depositing the flying dust.

そして、帯電部接地極板１４と帯電部荷電極板１５の両端部に堆積した粉塵は、多量に堆積すると剥離し、このとき、付着していた極板と同じ電気極性に帯電（この帯電を誘導帯電という）して再び飛散する。   The dust deposited on both ends of the charging unit ground electrode plate 14 and the charging unit load electrode plate 15 is peeled off when a large amount of dust is deposited. At this time, it is charged to the same electrical polarity as the electrode plate attached (this charging is performed). It will be scattered again after induction charging).

具体的には、図９Ｂに示すように、帯電部接地極板１４に堆積していた粉塵は負の極性、帯電部荷電極板１５に堆積していた粉塵は正の極性に帯電して再び飛散する。   Specifically, as shown in FIG. 9B, the dust accumulated on the charging portion ground electrode plate 14 is charged with a negative polarity, and the dust accumulated on the charging portion load electrode plate 15 is charged with a positive polarity and again. Scatter.

帯電して再び飛散した粒子は、帯電部接地極板１４または帯電部荷電極板１５の表面に静電気力で捕集される。   The particles that have been charged and scattered again are collected on the surface of the charging portion ground electrode plate 14 or the charging portion load electrode plate 15 by electrostatic force.

また、帯電部１２をすり抜けた粉塵は、図１０に示すように、帯電部１２よりも下流側に設けた集塵部１３の集塵部接地極板１６と集塵部荷電極板１７にそれぞれ引き寄せられ、静電気力で捕集される。   Further, as shown in FIG. 10, the dust that has passed through the charging unit 12 is respectively applied to the dust collecting unit ground electrode plate 16 and the dust collecting unit load electrode plate 17 of the dust collecting unit 13 provided on the downstream side of the charging unit 12. Attracted and collected by electrostatic force.

このように、帯電部接地極板１４と帯電部荷電極板１５を交互に、吸込んだ気体の流れる方向に対して平行、かつ千鳥状に配置したことにより、粉塵を誘導帯電により効率よく帯電させることができる。   As described above, the charging unit grounding electrode plate 14 and the charging unit load electrode plate 15 are alternately arranged in parallel and in a staggered manner with respect to the flowing direction of the sucked gas, thereby efficiently charging the dust by induction charging. be able to.

すなわち、図８で説明したように、帯電部接地極板１４と帯電部荷電極板１５を複数枚設けることにより、各極板のそれぞれの端部に湾曲した電気力線が密になり、複数の不平等電界の領域を形成することができる。   That is, as described with reference to FIG. 8, by providing a plurality of charging unit grounding electrode plates 14 and charging unit load electrode plates 15, curved electric lines of force are dense at each end of each electrode plate. The unequal electric field region can be formed.

そして、複数の不平等電界により発生した、より強電界の方向に働くグラディエント力により、帯電部接地極板１４と帯電部荷電極板１５のそれぞれの端部（風上端部４３、風下端部４４、風上端部４５、風下端部４６）は粉塵を引き寄せ、堆積させる。堆積した粉塵が多量となり、多量に堆積した粉塵が飛散する時には、堆積していた帯電部接地極板１４または帯電部荷電極板１５と同じ極性に誘導帯電により帯電させる。   Then, due to a gradient force generated by a plurality of unequal electric fields and acting in the direction of a stronger electric field, the respective end portions (the wind upper end portion 43 and the wind lower end portion 44) of the charging portion ground electrode plate 14 and the charging portion load electrode plate 15 are used. The wind upper end 45 and the wind lower end 46) attract and deposit dust. When the amount of accumulated dust becomes large and the accumulated dust is scattered, the charged portion grounding electrode plate 14 or the charged portion load electrode plate 15 is charged by induction charging to the same polarity.

この帯電した粉塵は、異なる極性の帯電部荷電極板１５または帯電部接地極板１４、および、異なる極性の集塵部接地極板１６または集塵部荷電極板１７に集塵される。これにより、帯電部接地極板１４と帯電部荷電極板１５の間に高電圧を印加するだけで、コロナ放電を発生させずに粉塵を帯電させて集塵することができる。その結果、帯電部１２での消費電力を低減し、消費電力に伴う電気代を少なくできる。   The charged dust is collected on the charged part load electrode plate 15 or the charged part ground electrode plate 14 of different polarity, and the dust collector ground electrode plate 16 or the dust collector part load electrode plate 17 of different polarities. Thereby, it is possible to collect dust by charging dust without generating corona discharge only by applying a high voltage between the charging portion ground electrode plate 14 and the charging portion load electrode plate 15. As a result, the power consumption in the charging unit 12 can be reduced, and the electricity cost accompanying the power consumption can be reduced.

電気代の削減量について、具体的な数値を用いて以下に試算する。コロナ放電を用いた標準仕様の電気集塵装置での風量当たりの消費電力は１１０Ｗ／（ｍ３／ｓ）である。代表的なトンネル換気設備の処理風量が２５０ｍ３／ｓの場合、コロナ放電を用いた標準仕様の電気集塵装置は２７．５ｋＷ／ｈ消費する。本実施の形態の電気集塵装置３は、この電力発生を低減でき、年間電気代として、２７．５ｋＷ×２０ｈ／ｄ×３６５ｄ×２０円／ｋＷ＝４００万円少なくできる。The amount of electricity cost reduction will be estimated below using specific figures. The power consumption per air volume in a standard specification electrostatic precipitator using corona discharge is 110 W / (m 3 / s). When the processing air volume of a typical tunnel ventilation facility is 250 m 3 / s, a standard specification electrostatic precipitator using corona discharge consumes 27.5 kW / h. The electrostatic precipitator 3 of the present embodiment can reduce the generation of electric power, and the annual electricity bill can be reduced by 27.5 kW × 20 h / d × 365 d × 20 yen / kW = 4 million yen.

本発明では、帯電部高圧電源１８により帯電部荷電極板１５に正の高電圧を印加している。帯電部高圧電源１８は、高電圧による電界を形成するために必要であるが、従来のコロナ放電のようには放電させないため、電流は流れず、電力をほとんど消費しない。   In the present invention, a positive high voltage is applied to the charging portion load electrode plate 15 by the charging portion high voltage power source 18. The charging unit high-voltage power supply 18 is necessary to form an electric field by a high voltage, but since it is not discharged like conventional corona discharge, no current flows and little power is consumed.

また、図７で説明した、帯電部接地極板１４と帯電部荷電極板１５の側面視での重なり部を設ける配置は、重なり部を設けない配置に比べ、不平等電界の領域を多く形成できる。これにより、例えば、帯電部接地極板１４や帯電部荷電極板１５などの極板の枚数を低減でき、帯電部１２を小型化できる。   Further, the arrangement in which the overlapping portion in the side view of the charging portion ground electrode plate 14 and the charging portion load electrode plate 15 described in FIG. 7 forms a region of unequal electric field more than the arrangement in which the overlapping portion is not provided. it can. Thereby, for example, the number of electrode plates such as the charging unit ground electrode plate 14 and the charging unit load electrode plate 15 can be reduced, and the charging unit 12 can be downsized.

また、重なり部を形成する帯電部接地極板１４と帯電部荷電極板１５は、それぞれの端部で別々に不平等電界を形成する。このため、重なり部の長さＬは、帯電部接地極板１４と帯電部荷電極板１５の極板間隔Ｄ以上が好ましい。   Further, the charging portion ground electrode plate 14 and the charging portion load electrode plate 15 forming the overlapping portion separately form an unequal electric field at each end portion. Therefore, the length L of the overlapping portion is preferably equal to or greater than the electrode plate interval D between the charging portion ground electrode plate 14 and the charging portion load electrode plate 15.

また、重なり部の長さＬは、粉塵が飛散する時に誘導帯電により帯電した粒子を静電気力によって対向する極板に付着させる目的で、帯電粒子の電界における移動度と極板間隔Ｄ、および通過風速から求められる。   Further, the length L of the overlapping portion is determined so that particles charged by induction charging adhere to the opposing electrode plates by electrostatic force when dust is scattered, the mobility of the charged particles in the electric field, the electrode plate spacing D, and the passage. It is calculated from the wind speed.

つまり、極板間隔Ｄが１０ｍｍで印加電圧が＋１０ｋＶの場合、電界強度は１０００Ｖ／ｍｍとなる。この時、帯電粒子の電界における移動度から算出される粒子の移動速度は１０ｍ／ｓ以上であり通過風速１０ｍ／ｓの場合、重なり部の長さＬは極板間隔Ｄと同じ１０ｍｍでよい。なお、確実に粉塵を対向する極板に付着させるためには、重なり部の長さＬは、帯電部接地極板１４と帯電部荷電極板１５の極板間隔Ｄ以上が好ましい。   That is, when the electrode gap D is 10 mm and the applied voltage is +10 kV, the electric field strength is 1000 V / mm. At this time, the moving speed of the particles calculated from the mobility of the charged particles in the electric field is 10 m / s or more. When the passing wind speed is 10 m / s, the length L of the overlapping portion may be 10 mm which is the same as the electrode plate interval D. In order to ensure that dust adheres to the opposing electrode plates, the length L of the overlapping portion is preferably equal to or greater than the electrode plate interval D between the charging portion ground electrode plate 14 and the charging portion load electrode plate 15.

次に、帯電部１２の帯電部接地極板１４と帯電部荷電極板１５の形状、および、帯電部１２と集塵ユニット１１の組立て方について、図１１〜１３を用いて説明する。   Next, the shapes of the charging unit grounding electrode plate 14 and the charging unit load electrode plate 15 of the charging unit 12 and how to assemble the charging unit 12 and the dust collecting unit 11 will be described with reference to FIGS.

図１１は、本発明の実施の形態１における電気集塵装置の帯電部の極板の形状を表す側面図である。図１２は、本発明の実施の形態１における電気集塵装置の帯電部の構成を表す組立て斜視図である。図１３は、本発明の実施の形態１における電気集塵装置の構成を表す組立て斜視図である。   FIG. 11 is a side view showing the shape of the electrode plate of the charging unit of the electrostatic precipitator according to Embodiment 1 of the present invention. FIG. 12 is an assembled perspective view showing the configuration of the charging unit of the electrostatic precipitator according to Embodiment 1 of the present invention. FIG. 13 is an assembled perspective view showing the configuration of the electrostatic precipitator according to Embodiment 1 of the present invention.

図１１に示すように、複数の帯電部接地極板１４と複数の帯電部荷電極板１５は、それぞれ１枚の金属板で形成されている。すなわち、１枚の金属板に複数の長四角孔２０を設けて、複数の帯電部接地極板１４と複数の帯電部荷電極板１５は、これまで説明した所定の間隔を成して配置されている。なお、複数の帯電部接地極板１４と複数の帯電部荷電極板１５は、後述する極板間隔保持管２２によりそれぞれ繋がっている。このため、帯電部接地極板１４は１箇所の接地のみでよく、帯電部荷電極板１５へ高電圧を印加するための接続も１箇所のみでよい。   As shown in FIG. 11, the plurality of charging portion ground electrode plates 14 and the plurality of charging portion load electrode plates 15 are each formed of one metal plate. That is, a plurality of long rectangular holes 20 are provided in one metal plate, and the plurality of charging portion ground electrode plates 14 and the plurality of charging portion load electrode plates 15 are arranged at the predetermined intervals described above. ing. The plurality of charging portion ground electrode plates 14 and the plurality of charging portion load electrode plates 15 are connected to each other by an electrode plate interval holding tube 22 described later. For this reason, the charging portion grounding electrode plate 14 is required to be grounded only at one place, and the connection for applying a high voltage to the charging portion load electrode plate 15 is required only at one place.

図１２に示すように、帯電部１２は、複数の帯電部接地極板１４と複数の帯電部荷電極板１５が極板間隔保持管２２によって一定間隔を保ちながら配置されている。また、各極板には複数の極板保持棒２３が貫通し、帯電部１２の両側に配置された帯電部フレーム２１の間に平行に固定されている。   As shown in FIG. 12, in the charging unit 12, a plurality of charging unit ground electrode plates 14 and a plurality of charging unit load electrode plates 15 are arranged while maintaining a constant interval by an electrode plate interval holding tube 22. In addition, a plurality of electrode plate holding rods 23 pass through each electrode plate, and are fixed in parallel between the charging unit frames 21 arranged on both sides of the charging unit 12.

また、帯電部フレーム２１には碍子２４が設けられている。碍子２４は、帯電部荷電極板１５を含む電圧印加部品を支持し、かつ帯電部接地極板１４を含む接地部品から電気絶縁している。   The charging unit frame 21 is provided with an insulator 24. The insulator 24 supports the voltage application component including the charging portion load electrode plate 15 and is electrically insulated from the grounding component including the charging portion grounding electrode plate 14.

図６でも示したように、帯電部接地極板１４および集塵部接地極板１６の枚数と帯電部荷電極板１５および集塵部荷電極板１７の枚数は、それぞれおおよそ同じ枚数となるように平行に配置されている。すなわち、図６においては、帯電部接地極板１４と集塵部接地極板１６がそれぞれ４枚、帯電部荷電極板１５と集塵部荷電極板１７がそれぞれ３枚配置されている。しかし、帯電部接地極板１４と帯電部荷電極板１５と集塵部接地極板１６と集塵部荷電極板１７とがそれぞれ１枚ずつ配置される構成でもよい。これにより、各極板の設置枚数を削減できる。   As shown in FIG. 6, the number of charging unit grounding electrode plates 14 and dust collecting unit grounding electrode plates 16 and the number of charging unit loading electrode plates 15 and dust collecting unit loading electrode plates 17 are approximately the same. It is arranged in parallel with. That is, in FIG. 6, four charging unit grounding electrode plates 14 and four dust collecting unit grounding electrode plates 16 are arranged, and three charging unit loading electrode plates 15 and three dust collecting unit loading electrode plates 17 are arranged. However, the charging unit ground electrode plate 14, the charging unit load electrode plate 15, the dust collecting unit ground electrode plate 16, and the dust collecting unit load electrode plate 17 may be arranged one by one. Thereby, the installation number of each electrode plate can be reduced.

また、図１３に示すように、集塵部１３は、帯電部１２と同様に、複数の集塵部接地極板１６と複数の集塵部荷電極板１７が極板間隔保持管２２によって一定間隔を保ちながら配置されている。また、各極板には４本ずつの極板保持棒２３が貫通し、集塵部１３の両側に配置された集塵部フレーム２５の間に平行に固定されている。   Further, as shown in FIG. 13, in the same manner as the charging unit 12, the dust collection unit 13 includes a plurality of dust collection unit grounding electrode plates 16 and a plurality of dust collection unit load electrode plates 17 fixed by an electrode plate interval holding tube 22. Arranged while keeping a distance. In addition, four electrode plate holding bars 23 pass through each electrode plate, and are fixed in parallel between the dust collecting unit frames 25 arranged on both sides of the dust collecting unit 13.

なお、本実施の形態では、帯電部１２と集塵部１３を設けたが、集塵部１３を設けず、帯電部１２だけの構成でもよい。すなわち、本実施形態では、帯電部１２と集塵部１３を分離して設けたが、帯電部１２と集塵部１３を一体化して集塵ユニット１１としてもよい。この場合、集塵ユニット１１は、上流側で帯電機能を有し、帯電機能を有する部分よりも下流側で集塵機能を有することになる。   In this embodiment, the charging unit 12 and the dust collecting unit 13 are provided. However, the dust collecting unit 13 may not be provided and only the charging unit 12 may be configured. That is, in the present embodiment, the charging unit 12 and the dust collecting unit 13 are provided separately, but the charging unit 12 and the dust collecting unit 13 may be integrated into the dust collecting unit 11. In this case, the dust collecting unit 11 has a charging function on the upstream side, and has a dust collecting function on the downstream side of the portion having the charging function.

また、より高い集塵効率が必要な場合には、帯電部荷電極板１５および帯電部接地極板１４における互いに対向する部分に鋭利な突起をさらに設け、補助的にコロナ放電を用いて粉塵の帯電を促進させる構成でもよい。   In addition, when higher dust collection efficiency is required, sharp protrusions are further provided on the charging portion load electrode plate 15 and the charging portion grounding electrode plate 14 facing each other, and the corona discharge is used to supplement the dust. It may be configured to promote charging.

なお、本実施の形態では、帯電部１２と集塵部１３の接地極板および荷電極板は平板状の極板を用いたが、例えば繊維状または棒状の極板を用いてもよい。   In the present embodiment, the grounding electrode plate and the load electrode plate of the charging unit 12 and the dust collecting unit 13 are flat plate plates. However, for example, a fibrous or rod-shaped electrode plate may be used.

本発明にかかる電気集塵装置は、複数の荷電極板と複数の接地極板を、気体流入部と気体流出部間において交互に平行、吸い込んだ気体の流れる方向に千鳥状に配置する。これにより、コロナ放電を起こさずグラディエント力により荷電極板と接地極板のそれぞれの端部に粉塵を堆積させることで粉塵を堆積させる。これにより、帯電部での消費電力を低減する。その結果、電力消費に伴う電気代を少なくできる。   In the electrostatic precipitator according to the present invention, a plurality of load electrode plates and a plurality of ground electrode plates are alternately arranged in parallel between the gas inflow portion and the gas outflow portion, and arranged in a staggered manner in the flowing direction of the sucked gas. As a result, dust is deposited by depositing dust on the respective ends of the load electrode plate and the ground electrode plate by a gradient force without causing corona discharge. Thereby, power consumption in the charging unit is reduced. As a result, the electricity bill accompanying power consumption can be reduced.

１ トンネル本線
２ 換気吸込口
３ 電気集塵装置
４ 換気風路
５ 換気ファン
６ 換気吐出口
７ 電気集塵補機
８ 高圧発生盤
９ 制御盤
１０ ケーシング
１１ 集塵ユニット
１２ 帯電部
１３ 集塵部
１４ 帯電部接地極板
１５ 帯電部荷電極板
１６ 集塵部接地極板
１７ 集塵部荷電極板
１８ 帯電部高圧電源
１９ 集塵部高圧電源
２０ 長四角孔
２１ 帯電部フレーム
２２ 極板間隔保持管
２３ 極板保持棒
２４ 碍子
２５ 集塵部フレーム
３１ ダンパ
３２ 洗浄配管
３３ 配線端子箱
４１ 気体流入部
４２ 気体流出部
４３，４５，４７ 風上端部
４４，４６ 風下端部DESCRIPTION OF SYMBOLS 1 Tunnel main line 2 Ventilation suction inlet 3 Electric dust collector 4 Ventilation air channel 5 Ventilation fan 6 Ventilation discharge port 7 Electric dust collection auxiliary machine 8 High pressure generation panel 9 Control panel 10 Casing 11 Dust collection unit 12 Charging part 13 Dust collection part 14 Charging unit ground electrode plate 15 Charging unit load electrode plate 16 Dust collector unit ground electrode plate 17 Dust collector unit electrode plate 18 Charging unit high voltage power source 19 Dust collector unit high voltage power source 20 Long square hole 21 Charging unit frame 22 Electrode plate interval holding tube 23 pole plate holding rod 24 insulator 25 dust collecting part frame 31 damper 32 cleaning pipe 33 wiring terminal box 41 gas inflow part 42 gas outflow part 43, 45, 47 wind upper end part 44, 46 wind lower end part

Claims (6)

気体流入部および気体流出部を有するケーシングと、
前記ケーシングの内部に設けられ、前記気体流入部と前記気体流出部の間に流れる気体中の粉塵を帯電させる帯電部と、を備え、
前記帯電部は、荷電極板と接地極板とを有し、前記荷電極板に高電圧を印加することで発生するグラディエント力により前記荷電極板および前記接地極板のそれぞれの端部に前記粉塵を堆積させることで前記粉塵を帯電させる電気集塵装置。A casing having a gas inlet and a gas outlet;
A charging unit that is provided inside the casing and charges dust in the gas flowing between the gas inflow portion and the gas outflow portion;
The charging unit includes a load electrode plate and a ground electrode plate, and the gradient electrode force generated by applying a high voltage to the load electrode plate causes the load electrode plate and the ground electrode plate to each end. An electric dust collector that charges the dust by accumulating the dust. 前記荷電極板と前記接地極板は、前記気体の流れる方向に対して平行に配置されている請求項１に記載の電気集塵装置。 The electrostatic precipitator according to claim 1, wherein the load electrode plate and the ground electrode plate are arranged in parallel to a direction in which the gas flows. 前記帯電部は、前記荷電極板と前記接地極板とを複数枚有し、
複数の前記荷電極板と複数の前記接地極板は、交互に配置されている請求項２に記載の電気集塵装置。The charging unit has a plurality of the load electrode plate and the ground electrode plate,
The electrostatic precipitator according to claim 2, wherein the plurality of load electrode plates and the plurality of ground electrode plates are alternately arranged. 前記帯電部は、前記荷電極板と前記接地極板とを複数枚有し、
複数の前記荷電極板と複数の前記接地極板は、千鳥状に配置されている請求項１〜３のいずれか１項に記載の電気集塵装置。The charging unit has a plurality of the load electrode plate and the ground electrode plate,
The electrostatic precipitator according to claim 1, wherein the plurality of load electrode plates and the plurality of ground electrode plates are arranged in a staggered manner. 前記荷電極板と前記接地極板は、前記気体の流れる方向において重なる重なり部を有する請求項４に記載の電気集塵装置。 The electrostatic precipitator according to claim 4, wherein the load electrode plate and the ground electrode plate have an overlapping portion that overlaps in a direction in which the gas flows. 前記重なり部の長さは、前記荷電極板と前記接地極板の間隔より長い請求項５に記載の電気集塵装置。 The electrostatic precipitator according to claim 5, wherein a length of the overlapping portion is longer than a distance between the load electrode plate and the ground electrode plate.
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JPH09262499A (en) * 1996-03-28 1997-10-07 Toto Ltd Electric al precipitator
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