Insulator and wet electrostatic precipitator with same

Abstract

An insulating device and a wet electrostatic precipitator having the same are provided. The insulation device includes: an insulation device body forming an insulation region, the insulation device body being connected to the wet electrostatic precipitator; an insulating device cover; and an insulator, the insulator passing through the insulation device cover, the insulation device cover is configured to eject at least one of an insulator contamination prevention fluid for preventing contamination of a surface of the insulator, an insulator cleaning fluid for cleaning the surface of the insulator, and an insulator drying fluid for drying the surface of the insulator onto the insulator.

Description

Technical Field

[0001] This disclosure relates to an insulating device and a wet electrostatic precipitator having the insulating device. Background Technology

[0002] Waste gases emitted from electronic manufacturing processes (e.g., semiconductors, display devices, solar cells, or organic light-emitting diodes) contain acidic components, moisture, dust, and other substances. These waste gases typically possess properties such as toxicity, corrosiveness, and explosiveness, and are treated and discharged using scrubbing systems employing plasma methods, combustion oxidation methods, electrothermal oxidation methods, or chemical adsorption methods. Plasma methods generate high-temperature plasma to decompose and treat waste gases, while combustion oxidation is the most commonly used waste gas treatment method, which involves using LNG and oxidants to heat and decompose the waste gases with a high-temperature flame.

[0003] In these waste gas treatment methods, a water treatment process is performed to capture particles generated as reaction byproducts during the waste gas decomposition process via plasma or flame. This is achieved by passing the waste gas through a water treatment module into which water is sprayed. Additionally, in these waste gas treatment methods, an electrostatic precipitation process, in which the waste gas is passed through an electroprecipitator, is performed simultaneously with the water treatment process to achieve more effective particle capture. The electrostatic precipitator utilizes corona discharge generated between a discharge electrode and a precipitation electrode to charge and capture the particles contained in the waste gas.

[0004] Simultaneously, the discharge electrode of the electrostatic precipitator is connected to a high-voltage power supply via an electrode connection member, which is insulated by an insulator. Traditionally, in electrostatic precipitators, the entire electrode connection member is insulated by an insulator. Furthermore, in conventional electrostatic precipitators, particles or conductive gases that are not removed from the exhaust gas accumulate on the surface of the insulator, thus contaminating the surface. When the surface of the insulator is contaminated by these particles or conductive gases, insulation breakdown occurs through the contaminated surface, leading to a high-voltage short circuit and halting the operation of the electrostatic precipitator. Conventionally, in electrostatic precipitators, due to insulation breakdown and high-voltage short circuits caused by surface contamination, the operating time is not as long as desired. Summary of the Invention

[0005] In view of the above background, embodiments of the present invention have been invented to provide an insulating device and a wet electrostatic precipitator having the insulating device, which can minimize contamination of the surface of an insulator that insulates the portion of the electrode connection member connected to the discharge electrode and the power source.

[0006] According to one aspect of the present invention, an insulating device is provided, comprising: an insulating device body forming an insulating region, the insulating device body being connected to a wet electrostatic precipitator such that an open side of the insulating region communicates with the interior of the wet electrostatic precipitator; an insulating device cover being connected to the insulating device body to close another open side of the insulating region; and an insulator extending through the insulating device cover such that one side of the insulator is disposed in the insulating region and the other side of the insulator is disposed outside the insulating device cover, a portion of an electrode connection member extending from the interior of the wet electrostatic precipitator to the insulating region passing through the insulator, the insulator extending to the exterior of the insulating device cover to insulate a portion of the electrode connection member, wherein the insulating device cover is configured to spray at least one of an insulator contamination prevention fluid for preventing contamination of the surface of the insulator, an insulator cleaning fluid for cleaning the surface of the insulator, and an insulator drying fluid for drying the surface of the insulator onto the insulator.

[0007] In another aspect, an insulating device is provided, wherein the insulating device cover includes a first fluid injection cover through which the insulator passes, the first fluid injection cover being configured to inject at least one of the following along the circumference of the insulator at an angle to the longitudinal direction of the insulator: an insulator contamination prevention fluid, an insulator cleaning fluid, and an insulator drying fluid.

[0008] In another aspect, an insulation device is provided, wherein a first fluid injection cover includes: a first fluid supply path connected to an insulator contamination prevention fluid supply source, an insulator cleaning fluid supply source, and an insulator drying fluid supply source; a fluid flow region connected to the first fluid supply path, wherein at least one of the insulator contamination prevention fluid, the insulator cleaning fluid, and the insulator drying fluid supplied through the first fluid supply path flows in the fluid flow region; and a fluid injection outlet disposed at the circumference of the insulator to communicate with the fluid flow region, the fluid injection outlet being configured such that at least one of the insulator contamination prevention fluid, the insulator cleaning fluid, and the insulator drying fluid is injected through the fluid injection outlet.

[0009] On the other hand, an insulating device is provided, wherein the first fluid supply path is formed as a virtual line parallel to the center of a transverse cross-section passing through the insulator and spaced apart from the virtual line on one side or the other, the transverse cross-section being a cross-section of the insulator perpendicular to the longitudinal direction of the insulator.

[0010] On the other hand, an insulating device is provided in which the dimension of the transverse cross-section of the fluid flow region decreases toward the fluid jet outlet, the transverse cross-section being a cross-section of the fluid flow region perpendicular to the longitudinal direction of the insulator.

[0011] In another aspect, an insulating device is provided, wherein a first fluid injection cap includes: a first injection cap main portion including a first through-hole through which the insulator passes, a first fluid supply path, and a first flow region forming portion, the first flow region forming portion being radially spaced from and surrounding the first through-hole; and a first injection cap auxiliary portion including a fluid injection outlet opening and a second flow region forming portion, the fluid injection outlet opening forming the fluid injection outlet between one end of the first flow region forming portion along the longitudinal direction of the insulator, the second flow region forming portion extending from the fluid injection outlet opening toward the first injection cap main portion to form the fluid flow region together with the first flow region forming portion.

[0012] In another aspect, an insulating device is provided, wherein the insulating device cover further includes a second fluid injection cover connected to the first fluid injection cover and the insulating device body to close the other open side of the insulating region together with the first fluid injection cover, the insulator passing through the second fluid injection cover, the second fluid injection cover being configured to spray at least one of the insulator contamination prevention fluid, the insulator cleaning fluid, and the insulator drying fluid at an angle to the circumferential direction of the insulator.

[0013] In another aspect, an insulation device is provided, wherein the second fluid injection cover includes: a second fluid supply path connected to an insulator contamination prevention fluid supply source, an insulator cleaning fluid supply source, and an insulator drying fluid supply source; a fluid flow path connected to the second fluid supply path, through which at least one of the insulator contamination prevention fluid, the insulator cleaning fluid, and the insulator drying fluid supplied flows; and a plurality of fluid injection paths connected to the fluid flow path and arranged along the circumference of the insulator, the plurality of fluid injection paths injecting at least one of the insulator contamination prevention fluid, the insulator cleaning fluid, and the insulator drying fluid.

[0014] On the other hand, an insulating device is provided in which the fluid injection path extends toward the insulator at an angle to the circumferential direction of the insulator.

[0015] In another aspect, an insulating device is provided, wherein a second fluid injection cap includes a second injection cap main portion, the second injection cap main portion including a second through-hole through which the insulator passes, a second fluid supply path, and a flow path forming portion spaced in the radial direction from and surrounding the second through-hole; and a second injection cap auxiliary portion, the second injection cap auxiliary portion including a third through-hole through which the insulator passes, and the plurality of fluid injection paths being formed to communicate with the third through-hole, the second injection cap auxiliary portion forming the fluid flow path together with the flow path forming portion.

[0016] On another front, a wet electrostatic precipitator is provided, comprising: a precipitator body grounded and having a gas treatment area, wherein particulate-containing waste gas enters and flows within the gas treatment area, and purified gas, which is waste gas from which particulates have been removed, is discharged from the gas treatment area; a discharge electrode disposed in the gas treatment area and spaced apart from the precipitator body; an insulating device having an insulating area and connected to the precipitator body such that an open side of the insulating area communicates with the gas treatment area; and an electrode connection member, wherein the electrode... One side of the electrode connection member is connected to the discharge electrode, and the other side passes through the insulating device via a portion of the gas processing area and an insulating area. The electrode connection member extends to the outside of the insulating device to connect to a power source. The insulating device includes an insulator, a portion of the electrode connection member passes through the insulator to insulate the portion of the electrode connection member, and the insulating device is configured to spray at least one of an insulator contamination prevention fluid for preventing contamination of the surface of the insulator, an insulator cleaning fluid for cleaning the surface of the insulator, and an insulator drying fluid for drying the surface of the insulator onto the insulator.

[0017] In another aspect, a wet electrostatic precipitator is provided, the insulating device further comprising: an insulating device body having an insulating region formed thereon; and an insulating device cover connected to the insulating device body to close another open side of the insulating region, wherein the insulator passes through the insulating device cover such that one side of the insulator is disposed in the insulating region and the other side of the insulator is disposed outside the insulating device cover, and wherein the insulating device cover is configured to spray at least one of the insulator contamination prevention fluid, the insulator cleaning fluid, and the insulator drying fluid onto the insulator.

[0018] On the other hand, a wet electrostatic precipitator is provided, the wet electrostatic precipitator further comprising a controller for controlling the supply of the insulator contamination prevention fluid, the insulator cleaning fluid, and the insulator drying fluid to the insulating device cover, wherein the controller performs the following control: in a precipitation mode where particulates contained in the exhaust gas are precipitated in the wet electrostatic precipitator, the insulator contamination prevention fluid is sprayed onto the surface of the insulator through the insulating device cover; in an insulator cleaning mode where the surface of the insulator is cleaned, the insulator contamination prevention fluid and the insulator cleaning fluid are sprayed onto the surface of the insulator through the insulating device cover while the electrical connection between the power supply and the discharge electrode is interrupted; and in an insulator drying mode where the surface of the insulator is dried, after the insulator drying fluid is sprayed onto the surface of the insulator, the power supply and the discharge electrode are electrically connected to each other.

[0019] According to an embodiment of the present invention, the insulator contamination prevention fluid is sprayed onto the surface of the insulator that insulates the portion of the electrode connection member connected to the discharge electrode and the power source, thereby preventing contamination of the insulator surface.

[0020] In addition, according to embodiments of the present invention, the insulator cleaning fluid and the insulator contamination prevention fluid are periodically or non-periodically sprayed onto the surface of the insulator, so that the surface of the insulator is dried after cleaning, which achieves the effect of minimizing contamination on the surface of the insulator.

[0021] Furthermore, according to embodiments of the present invention, by minimizing insulation breakdown and high-voltage short circuits caused by contamination of the insulator surface in the wet electrostatic precipitator, the operating time of the wet electrostatic precipitator can be increased. Attached Figure Description

[0022] The objects and features of this disclosure will become apparent from the following description of embodiments given in conjunction with the accompanying drawings, in which: Figure 1 This is a perspective view of a wet electrostatic precipitator according to an embodiment of the present invention.

[0023] Figure 2 It is based on Figure 1 A cross-sectional view of line I-I'.

[0024] Figure 3 This is a perspective view of an insulating device according to an embodiment of the present invention.

[0025] Figure 4 It is based on Figure 3 The cross-sectional view of line II-II' shows the first to fourth supply pipes connecting the first and second fluid supply paths and the fluid supply source, as well as the controller.

[0026] Figure 5 It is based on Figure 4 The cross-sectional view of line III-III'.

[0027] Figure 6 It is based on Figure 4 A cross-sectional view of line IV-IV'.

[0028] Figure 7 and Figure 8 This is an operational diagram of an insulating device and a wet electrostatic precipitator having the insulating device according to an embodiment of the present invention, showing the precipitation mode.

[0029] Figure 9 This is an operational diagram of an insulating device and a wet electrostatic precipitator having the insulating device according to an embodiment of the present invention, showing the insulator cleaning mode.

[0030] Figure 10 This is an operational diagram of an insulating device and a wet electrostatic precipitator having the insulating device according to an embodiment of the present invention, showing the insulator drying mode. Detailed Implementation

[0031] In the following, specific embodiments for implementing the technical concepts of the present invention will be described in detail with reference to the accompanying drawings.

[0032] Furthermore, in describing the present invention, detailed descriptions of certain features or functions known in the art may be omitted if such features or functions are considered to obscure the essence of the invention.

[0033] It should be understood, however, that, as used herein, a statement that an element is “connected to”, “supported by”, or “supply to” another element may mean that the element is directly connected to, supported by, or supplied to the other element, or that there are one or more intermediate components between them.

[0034] The terminology used herein is intended only to describe specific embodiments of the invention and not to limit the scope of the invention. Unless otherwise indicated in the context, singular expressions are used to override corresponding plural expressions.

[0035] Furthermore, as used herein, directional phrases such as up, down, side, and their derivatives are described with reference to the orientation shown in the accompanying drawings, and the directional phrases may be expressed differently if the orientation changes. Similarly, in the accompanying drawings, some components are exaggerated, omitted, or shown schematically, and the dimensions of each component do not perfectly reflect the actual dimensions.

[0036] Furthermore, as used herein, terms including ordinal numbers such as first and second may be used to describe a variety of features, but features are not limited by terms. These terms are used only to distinguish one element from another.

[0037] As used herein, the terms “comprising” or “including” shall specify a particular feature, region, essence, step, operation, element, and / or component, but shall not exclude the presence or addition of other features, regions, essence, steps, operations, elements, components, and / or basis.

[0038] In the following text, see references Figures 1 to 6 This describes specific features of an insulating device and a wet electrostatic precipitator having the insulating device according to embodiments of the present invention. The wet electrostatic precipitator 1 is used to charge particles contained in exhaust gas using corona discharge to capture charged particles, thereby removing them from the exhaust gas. As particles contained in the exhaust gas that has entered the wet electrostatic precipitator 1 flow with the exhaust gas within the wet electrostatic precipitator 1, the particles can be charged by corona discharge and captured on the inner surface of the wet electrostatic precipitator 1. The particles captured on the inner surface of the wet electrostatic precipitator 1 can be discharged from the wet electrostatic precipitator 1 by a particle discharge fluid (e.g., water). The wet electrostatic precipitator 1 may include a precipitator body 100, a discharge electrode 200, an insulating device 300, an electrode connection member 400, and a controller 500.

[0039] according to Figure 1 and Figure 2Particulate-containing waste gas can enter and flow through the precipitator body 100, and purified gas, which is the waste gas from which particulates have been removed, can be discharged from it. A gas treatment zone 100-1 can be formed within the precipitator body 100. Waste gas can enter the gas treatment zone 100-1 through one open side to flow within it. Furthermore, purified gas (which is the waste gas from which particulates have been removed while flowing within the gas treatment zone 100-1) can be discharged from the gas treatment zone 100-1 through its other open side. For example, the precipitator body 100 can have a hollow tubular shape forming the gas treatment zone 100-1, and the gas treatment zone 100-1 can have an open lower and upper portion. A discharge electrode 200 and a portion of an electrode connection member 400 can be disposed within the gas treatment zone 100-1. Additionally, the insulating device 300 can be connected to the precipitator body 100, allowing communication between the gas treatment zone 100-1 and the interior of the insulating device 300. The precipitator body 100 is grounded, and particles in the exhaust gas, charged by the corona discharge of the discharge electrode 200, can precipitate onto the precipitator body 100. In other words, at least a portion of the precipitator body 100 can form a precipitator electrode or a precipitator substrate. The precipitator body 100 may include a precipitation unit 110, a particulate discharge fluid supply unit 120, and a discharge guiding unit 130.

[0040] Particulate-containing exhaust gas can enter and flow into the sedimentation unit 110. The particulates in the exhaust gas can be charged by corona discharge through the discharge electrode 200, and the charged particulates can be deposited on the inner surface of the sedimentation unit 110. The sedimentation unit 110 can be connected to an exhaust gas supply pipe, etc., so that particulate-containing exhaust gas can be introduced into it. In the sedimentation unit 110, a sedimentation region 110-1 can be formed, which forms part of the gas treatment region 100-1, in which the particulate-containing exhaust gas enters and the particulates are settled while the exhaust gas flows therein. For example, the sedimentation unit 110 can have a hollow tubular shape forming the sedimentation region 110-1, and the sedimentation region 110-1 can have an open lower part and an open upper part. The discharge electrode 200 can be provided in the sedimentation region 110-1 to charge the particulates contained in the exhaust gas flowing in the sedimentation region 110-1. In addition, a part of the electrode connecting member 400 can be provided in the sedimentation region 110-1. The sedimentation unit 110 may include a sedimentation area forming member 111 and an electrode cleaning fluid nozzle 112.

[0041] The sedimentation zone forming member 111 has a tubular shape, with openings on one and the other to form a sedimentation zone 110-1. The sedimentation zone forming member 111 can be connected to an exhaust gas supply pipe, etc., and to a particulate emission fluid supply unit 120. The electrode cleaning fluid nozzle 112 can be connected to an electrode cleaning fluid supply source, and can spray electrode cleaning fluid onto the discharge electrode 200 disposed in the sedimentation zone 110-1 when cleaning of the discharge electrode 200 is required. For example, the electrode cleaning fluid sprayed from the electrode cleaning fluid nozzle 112 can be water. In this case, the electrode cleaning fluid supply source can be the same as the insulator cleaning fluid supply source described below.

[0042] Particulate discharge fluid supply unit 120 can be connected to sedimentation unit 110 to supply particulate discharge fluid to the inner surface of sedimentation unit 110. Particulates deposited on the inner surface of sedimentation unit 110 can be discharged from sedimentation unit 110 via particulate discharge fluid supplied to the inner surface of sedimentation unit 110 through particulate discharge fluid supply unit 120. Particulate discharge fluid supply region 120-1 can be formed in particulate discharge fluid supply unit 120. Particulate discharge fluid supply region 120-1 can be configured to surround sedimentation unit 110 and communicate with sedimentation region 110-1. For example, particulate discharge fluid supply region 120-1 can be configured to surround the upper part of sedimentation unit 110 and communicate with sedimentation region 110-1. Particulate discharge fluid can be supplied to particulate discharge fluid supply region 120-1 from particulate discharge fluid supply source. For example, the particulate discharge fluid can be water. In this case, the particulate discharge fluid supply source can be the same as the insulator cleaning fluid supply source described below. The particulate emission fluid supply unit 120 may include a supply area forming member 121 and a particulate emission fluid supply path 122.

[0043] The supply area forming member 121 can surround the sedimentation unit 110 to form a particulate emission fluid supply area 120-1 therebetween. For example, the supply area forming member 121 can surround the upper circumference of the sedimentation unit 110 to form the particulate emission fluid supply area 120-1. Furthermore, with the end of the supply area forming member 121 positioned separate from the end of the sedimentation unit 110 in the longitudinal direction of the sedimentator body 100, the supply area forming member 121 can be connected to the discharge guiding unit 130. Therefore, the particulate emission fluid supply area 120-1 can communicate with the sedimentation area 110-1. For example, the supply area forming member 121 can be connected to the discharge guiding unit 130 with its position away from the upper end of the sedimentation unit 110. The particulate emission fluid supply path 122 can be connected to a particulate emission fluid supply source. Furthermore, the particulate emission fluid supply path 122 can be connected to the supply area forming member 121 to communicate with the particulate emission fluid supply area 120-1. The particulate emission fluid supply path 122 is connected to the supply area forming member 121 in the circumferential direction of the particulate emission fluid supply unit 120, so that the particulate emission fluid can circulate in the particulate emission fluid supply area 120-1 and the sedimentation area 110-1.

[0044] The emission guiding unit 130 guides the emission of purified gas, the particulates of which have been removed in the sedimentation unit 110, and the purified gas has flowed in the particulate emission fluid supply unit 120. The emission guiding unit 130 can be connected to the particulate emission fluid supply unit 120. In the emission guiding unit 130, an emission guiding region 130-1 can be formed, forming a portion of the gas treatment region 100-1 and communicating with the sedimentation region 110-1. For example, the emission guiding unit 130 has a hollow tubular shape to form the emission guiding region 130-1. A portion of the electrode connection member 400 can be disposed in the emission guiding region 130-1. An insulating device 300 can be connected to the emission guiding unit 130 such that the emission guiding region 130-1 can communicate with the insulating region 300-1 formed in the insulating device 300, which will be described below. The emission guiding unit 130 may include an emission guiding region forming member 131 and a guiding region cleaning fluid nozzle 132.

[0045] The emission guiding region forming member 131 can form an emission guiding region 130-1 and is connected to the particulate emission fluid supply unit 120. The emission guiding region forming member 131 has a hollow tubular shape to form the emission guiding region 130-1. Furthermore, a gas emission port and a connecting port can be formed in the emission guiding region forming member 131, wherein purified gas is emitted from the gas emission port, and the connecting port communicates with the insulating region 300-1 of the insulating device 300. For example, the gas emission port can be formed on the upper part of the emission guiding region forming member 131, and the connecting port can be formed on the side of the emission guiding region forming member 131.

[0046] The guide area cleaning fluid nozzle 132 can be connected to a guide area cleaning fluid supply source and sprays the guide area cleaning fluid into the discharge guide area 130-1. For example, the guide area cleaning fluid sprayed by the guide area cleaning fluid nozzle 132 can be water. In this case, the guide area cleaning fluid supply source can be the same as the insulator cleaning fluid supply source described below.

[0047] The discharge electrode 200 can generate a corona discharge that charges particles contained in the exhaust gas flowing in the gas treatment zone 100-1 of the precipitator body 100. The corona discharge can occur between the discharge electrode 200 and the precipitator body 100. The discharge electrode 200 can be disposed in the gas treatment zone 100-1, spaced apart from the precipitator body 100. The discharge electrode 200 can be disposed at the center of the precipitation zone 110-1 in the gas treatment zone 100-1. The discharge electrode 200 can be connected to a power source. The discharge electrode 200 can be connected to the cathode or anode of a high-voltage power source via an electrode connection member 400. The discharge electrode 200 may include an electrode body 210 and a discharge pin 220.

[0048] The electrode body 210 can be positioned at the center of the settling region 110-1 in the gas treatment region 100-1 of the settling body 100. The electrode body 210 can have a tubular shape, with a closed hollow interior. One side of the electrode body 210 can be pointed. Furthermore, the other side of the electrode body 210 can be flat. For example, the lower part of the electrode body 210 can be pointed, and the upper part of the electrode body 210 can be flat. The flat upper part of the electrode body 210 can be connected to the electrode connection member 400. A plurality of discharge pins 220 can extend radially from the electrode body 210. When corona discharge is generated between the discharge pins 220 and the settling body 100, particles contained in the exhaust gas flowing between the discharge electrode 200 and the settling body 100 can become charged.

[0049] The insulating device 300 supports the electrode connection member 400, which is connected to the discharge electrode 200 to connect it to a power source and insulates a portion of the electrode connection member 400. Because the insulating device 300 insulates a portion of the electrode connection member 400, corona discharge can occur between the discharge electrode 200 and the precipitator body 100. The insulating device 300 may include an insulating device body 310, an insulating device cover 320, an insulator 330, and an insulating area cleaning fluid nozzle 340.

[0050] like Figures 3 to 6 As shown, an insulating region 310-1 may be formed in an insulating device body 310, and the insulating device body 310 may be connected to a precipitator body 100 such that an open side of the insulating region 310-1 communicates with the interior of the precipitator body 100. For example, a portion of the upper and side of the insulating region 310-1 may be open. Furthermore, the insulating device body 310 may be connected to a discharge guiding unit 130 of the precipitator body 100 such that the open side portion of the insulating region 310-1 communicates with a discharge guiding region 130-1 of a gas processing region 100-1 in the precipitator body 100. Additionally, at least a portion of the insulating device body 310 may be integrally formed with the discharge guiding unit 130 for connection to the discharge guiding unit 130.

[0051] The insulating device cover 320 may support the electrode connection member 400. The insulating device cover 320 may be connected to the insulating device body 310 to close another open side of the insulating region 310-1. For example, the insulating device cover 320 may be connected to the insulating device body 310 to close the open upper portion of the insulating region 310-1. The insulating device cover 320 may be configured to spray one or more of the following fluids onto the insulator 330: an insulator contamination prevention fluid for preventing surface contamination of the insulator 330; an insulator cleaning fluid for cleaning the surface of the insulator 330; and an insulator drying fluid for drying the surface of the insulator 330. The insulating device cover 320 may include a first fluid spray cover 321 and a second fluid spray cover 322.

[0052] The first fluid injection cover 321 can be configured to allow the insulator 330 to pass through it and to spray one or more of the following along the circumference of the insulator 330 at an angle to the longitudinal direction of the insulator 330: an insulator contamination prevention fluid, an insulator cleaning fluid, and an insulator drying fluid. The first fluid injection cover 321 may have a first fluid supply path 321-1, a fluid flow area 321-2, and a fluid injection outlet 321-3. Additionally, the first fluid injection cover 321 may include a main portion 321-4 and an auxiliary portion 321-5.

[0053] The first fluid supply path 321-1 can be connected to an insulator contamination prevention fluid supply source, an insulator cleaning fluid supply source, and an insulator drying fluid supply source. The insulator contamination prevention fluid and the insulator drying fluid can be the same. Alternatively, the insulator contamination prevention fluid supply source and the insulator drying fluid supply source can be the same. For example, the insulator contamination prevention fluid and the insulator drying fluid can be nitrogen or compressed dry air. Furthermore, the insulator cleaning fluid can be water. For example, the first fluid supply path 321-1 can be connected to the insulator contamination prevention fluid supply source and the insulator drying fluid supply source via a first supply pipe 2, on which a first supply valve 3 is provided. Furthermore, the first fluid supply path 321-1 can be connected to the insulator cleaning fluid supply source via a second supply pipe 4, on which a second supply valve 5 is provided. The second supply pipe 4 can be connected to the first supply pipe 2 to connect to the first fluid supply path 321-1.

[0054] The first fluid supply path 321-1 can be formed as a virtual line VL parallel to the center of a transverse cross-section passing through the insulator 330, and spaced apart from the virtual line VL on one or the other side. This transverse cross-section is a cross-section of the insulator 330 perpendicular to its longitudinal direction. For example, two first fluid supply paths 321-1 may exist. Furthermore, one of the two first fluid supply paths 321-1 can be formed to be spaced apart from the virtual line VL on one side, while the other is formed to be spaced apart from the virtual line VL on the other side. Moreover, the flow direction of the fluid in the first fluid supply path 321-1 spaced apart from the virtual line VL on one side can be opposite to the flow direction of the fluid in the first fluid supply path 321-1 spaced apart from the virtual line VL on the other side. Therefore, the insulator contamination prevention fluid, insulator cleaning fluid, or insulator drying fluid supplied to the fluid flow region 321-2 via the first fluid supply path 321-1 can circulate around the insulator 330 within the fluid flow region 321-2.

[0055] The fluid flow region 321-2 is connected to the first fluid supply path 321-1, and one or more of the following—insulator contamination prevention fluid, insulator cleaning fluid, and insulator drying fluid—flow therein. As described above, in the fluid flow region 321-2, the insulator contamination prevention fluid, insulator cleaning fluid, or insulator drying fluid can circulate around the insulator 330. The lateral cross-sectional dimension of the fluid flow region 321-2 can be reduced toward the fluid injection outlet 321-3, which is a cross-section of the fluid flow region 321-2 perpendicular to the longitudinal direction of the insulator 330. Therefore, the insulator contamination prevention fluid, insulator cleaning fluid, or insulator drying fluid already flowing in the fluid flow region 321-2 can be ejected through the fluid injection outlet 321-3.

[0056] The fluid injection outlet 321-3 can be connected to the fluid flow region 321-2 and disposed at the circumference of the insulator 330, and can inject one or more of the following: insulator contamination prevention fluid, insulator cleaning fluid, and insulator drying fluid. For example, the transverse cross-section of the fluid injection outlet 321-3 can be annular, which is a cross-section of the fluid injection outlet 321-3 perpendicular to the longitudinal direction of the insulator 330. As described above, the insulator contamination prevention fluid, insulator cleaning fluid, or insulator drying fluid can circulate around the insulator 330 in the fluid flow region 321-2. Therefore, the insulator contamination prevention fluid, insulator cleaning fluid, or insulator drying fluid can be injected through the fluid injection outlet 321-3 while circulating around the insulator 330. Furthermore, the insulator contamination prevention fluid, insulator cleaning fluid, or insulator drying fluid can be injected through the fluid injection outlet 321-3 at an angle to the longitudinal direction of the insulator 330 along the circumference of the insulator 330.

[0057] The main portion 321-4 of the first spray cover, together with the auxiliary portion 321-5 of the first spray cover, can form a first fluid spray cover 321. The main portion 321-4 of the first spray cover can be formed with a first through hole 321-41, the aforementioned first fluid supply path 321-1, and a first flow region forming portion 321-42. An insulator 330 can pass through the first through hole 321-41. Since the first fluid supply path 321-1 has been described above, its description is the same as above. Together with the second flow region forming portion 321-52 formed in the auxiliary portion 321-5 of the first spray cover, the first flow region forming portion 321-42 can form the aforementioned fluid flow region 321-2. The first flow region forming portion 321-42 can be formed to surround the first through hole 321-41, and to be spaced apart from the first through hole 321-41 in the radial direction.

[0058] The first injection cap auxiliary portion 321-5 can be connected to the first injection cap main portion 321-4 to form a first fluid injection cap 321. In the first injection cap auxiliary portion 321-5, a fluid injection outlet opening 321-51 and a second flow region forming portion 321-52 can be formed. The fluid injection outlet opening 321-51 can form a fluid injection outlet 321-3 at one end of the first flow region forming portion 321-42 along the longitudinal direction of the insulator 330. For example, the fluid injection outlet opening 321-51 can form a fluid injection outlet 321-3 at the lower end of the first flow region forming portion 321-42. The second flow region forming portion 321-52 can extend from the fluid injection outlet opening 321-21 toward the first injection cap main portion 321-4 and can form a fluid flow region 321-2 together with the first flow region forming portion 321-42. For example, at least a portion of the second flow region forming portion 321-52 may be inserted into the first flow region forming portion 321-42 to form a fluid flow region 321-2. The lateral cross-sectional dimension of the second flow region forming portion 321-52 may be reduced toward the fluid injection outlet 321-3, wherein the lateral cross-section is the cross-section of the second flow region forming portion 321-52 perpendicular to the longitudinal direction of the insulator 330.

[0059] The second fluid spray cover 322 can be connected to the first fluid spray cover 321 and the insulating device body 310 to seal the other open side of the insulating region 310-1 together with the first fluid spray cover 321, and the insulator 330 can pass through the second fluid spray cover 322. Additionally, the second fluid spray cover 322 can be configured to spray one or more of the following at the circumference of the insulator 330 at an angle to the circumference of the insulator 330: an insulator contamination prevention fluid, an insulator cleaning fluid, and an insulator drying fluid. The second fluid spray cover 322 may form a second fluid supply path 322-1, a fluid flow path 322-2, and a plurality of fluid spray paths 322-3. Furthermore, the second fluid spray cover 322 may include a main part 322-4 and an auxiliary part 322-5.

[0060] The second fluid supply path 322-1 can be connected to an insulator contamination prevention fluid supply source, an insulator cleaning fluid supply source, and an insulator drying fluid supply source. The contamination prevention fluid supply source, insulator cleaning fluid supply source, and insulator drying fluid supply source connected to the second fluid supply path 322-1 can be the same as those connected to the first fluid supply path 321-1. Furthermore, the insulator contamination prevention fluid and the insulator drying fluid can be the same. Additionally, the insulator contamination prevention fluid supply source and the insulator drying fluid supply source can be the same. For example, the insulator contamination prevention fluid and the insulator drying fluid can be nitrogen or compressed dry air. Furthermore, the insulator cleaning fluid supply source can be water. For example, the second fluid supply path 322-1 can be connected to the insulator contamination prevention fluid supply source and the insulator drying fluid supply source via a third supply pipe 6 equipped with a third supply valve 7. Furthermore, the second fluid supply path 322-1 can be connected to the insulator cleaning fluid supply source via a fourth supply pipe 8 equipped with a fourth supply valve 9. The fourth supply pipe 8 can be connected to the third supply pipe 6 to connect to the second fluid supply path 322-1.

[0061] The second fluid supply path 322-1 can be formed on a virtual line VL passing through the center of a transverse section of the insulator 330, which is a section of the insulator 330 perpendicular to its longitudinal direction. For example, two second fluid supply paths 322-1 can exist. Furthermore, the two second fluid supply paths 322-1 can be arranged facing each other. Therefore, the flow direction of the fluid flowing in one of the two second fluid supply paths 322-1 can be opposite to the flow direction of the fluid flowing in the other.

[0062] Fluid flow path 322-2 can be connected to a second fluid supply path 322-1, allowing one or more of the following—insulator contamination prevention fluid, insulator cleaning fluid, and insulator drying fluid—supplied through the second fluid supply path 322-1 to flow therein. For example, the transverse cross-section of fluid flow path 322-2 can have an annular shape, which is a cross-section of fluid flow path 322-2 perpendicular to the longitudinal direction of insulator 330. As described above, if the two second fluid supply paths 322-1 are formed facing each other on a virtual line VL passing through the center of the transverse cross-section of insulator 330, fluid can flow relatively uniformly in fluid flow path 322-2, which is a cross-section of insulator 330 perpendicular to the longitudinal direction of insulator 330.

[0063] Multiple fluid injection paths 322-3 can be connected to fluid flow path 322-2 and arranged along the circumference of insulator 330 to spray one or more of insulator contamination prevention fluid, insulator cleaning fluid, and insulator drying fluid. The multiple fluid injection paths 322-3 can be configured to extend towards insulator 330 at an angle to the circumferential direction of insulator 330. Therefore, one or more of the insulator contamination prevention fluid, insulator cleaning fluid, and insulator drying fluid can be sprayed through the multiple fluid injection paths 322-3 at an angle to the circumferential direction of insulator 330. Furthermore, one or more of the insulator contamination prevention fluid, insulator cleaning fluid, and insulator drying fluid can circulate around insulator 330.

[0064] The main portion 322-4 of the second spray cap may have a second through hole 322-41, the aforementioned second fluid supply path 322-1, and a flow path forming portion 322-42. The insulator 330 may pass through the second through hole 322-41. Furthermore, since the second fluid supply path 322-1 has already been described above, its description is the same as above. Together with the auxiliary portion 322-5 of the second spray cap, the flow path forming portion 322-42 may form the aforementioned fluid flow path 322-2. The flow path forming portion 322-42 may be formed around the second through hole 322-41, spaced apart from the second through hole 322-41 in the radial direction.

[0065] The second spray cover auxiliary portion 322-5 may have a third through hole 322-51 and the aforementioned plurality of fluid spray paths 322-3. An insulator 330 may pass through the third through hole 322-51. The plurality of fluid spray paths 322-3 may be configured to communicate with the third through hole 322-51. Furthermore, together with the flow path forming portion 322-42 of the main portion 322-4 of the second spray cover, the second spray cover auxiliary portion 322-5 may form a fluid flow path 322-2. For example, at least a portion of the second spray cover auxiliary portion 322-5 may be inserted into the flow path forming portion 322-42, thereby forming the fluid flow path 322-2.

[0066] The insulator 330 can insulate a portion of the electrode connection member 400. One side of the insulator 330 can pass through the insulating device cover 320 to be disposed in the insulating region 310-1, and the other side can be disposed outside the insulating device cover 320. For example, the insulator 330 can pass through the first through hole 321-41, the second through hole 322-41, and the third through hole 322-51 of the insulating device cover 320. The portion of the electrode connection member 400 extending from the interior of the precipitator body 100 to the insulating region 310-1 can pass through the insulator 330 to extend to the exterior of the insulating device cover 320. A portion of the electrode connection member 400 can be insulated by the portion of the electrode connection member 400 passing through the insulator 330. The insulator 330 can be formed with a member through hole 331 through which a portion of the electrode connection member 400 passes. For example, a portion of the third connection member 430, which is included in the electrode connection member 400 and will be described below, can pass through the member through hole 331 of the insulator 330 to be insulated by the insulator 330. The insulator 330 is disposed on one side of the insulating region 310-1, which can be spaced apart from the insulating device body 310, so that insulation breakdown will not occur between the insulating device bodies 310 due to contamination of the surface of the insulator 330. For example, one side of the insulator 330 can be disposed at the center of the insulating region 310-1. In addition, the insulator 330 can have a thickness sufficient to insulate a portion of the electrode connection member 400.

[0067] The insulating area cleaning fluid nozzle 340 can be connected to an insulating area cleaning fluid supply source and sprays the insulating area cleaning fluid into the insulating area 310-1. For example, the insulating area cleaning fluid sprayed from the insulating area cleaning fluid nozzle 340 can be water. In this case, the insulating area cleaning fluid supply source can be the same as the insulating body cleaning fluid supply source described above. The insulating area cleaning fluid nozzle 340 can be configured such that multiple nozzles are spaced apart from each other along the circumference of the insulating device body 310. For example, two insulating area cleaning fluid nozzles 340 can be arranged separately from each other along the circumference of the insulating device body 310.

[0068] Return to reference Figure 1 and Figure 2 The electrode connection member 400 can support the discharge electrode 200 while connecting it to a power source. One side of the electrode connection member 400 can be connected to the discharge electrode 200. Furthermore, the other side of the electrode connection member 400 can extend through the insulation device 300, reaching the outside of the insulation device 300 and connecting to a power source, via a portion of the gas treatment region 100-1 of the precipitator body 100 and the insulation region 310-1 of the insulation device 300. The electrode connection member 400 can be connected to the cathode or anode of the high-voltage electrode. The electrode connection member 400 may include a first connection member 410, a second connection member 420, and a third connection member 430.

[0069] The first connecting member 410 can be connected to the discharge electrode 200 and extends from the first connecting member 410 along the longitudinal direction of the precipitator body 100. The first connecting member 410 can extend from the discharge electrode 200 to the discharge guiding region 130-1 of the precipitator body 100. For example, the first connecting member 410 can extend upward from the discharge electrode 200 to the discharge guiding region 130-1.

[0070] The second connecting member 420 may be connected to the first connecting member 410 and extend from the first connecting member 410 through the discharge guiding region 130-1 of the precipitator body 100 to the discharge guiding region 130-1 of the insulation device 300. For example, the second connecting member 420 may extend horizontally from the second connecting member 420 to the insulation region 310-1 of the insulation device 300.

[0071] The third connecting member 430 can be connected to the second connecting member 420 in the insulating region 310-1 of the insulating device 300. Furthermore, the third connecting member 430 can extend from the second connecting member 420 to the outside of the insulating device 300, passing through the component through-hole 331 of the insulator 330 in the insulating device 300. The third connecting member 430 extending to the outside of the insulating device 300 can be connected to a power source. For example, the third connecting member 430 can extend upward from the second connecting member 420 to pass through the component through-hole 331 of the insulator 330 in the insulating device 300, extending to the outside of the insulating device 300 to connect to the cathode or anode of a high-voltage power source.

[0072] return Figure 4 The controller 500 controls the supply of insulator contamination prevention fluid, insulator cleaning fluid, and insulator drying fluid to the insulating device cover 320. For example, the controller 500 can control the aforementioned first supply valve 3, second supply valve 5, third supply valve 7, and fourth supply valve 9 to control the supply of insulator contamination prevention fluid, insulator cleaning fluid, and insulator drying fluid to the insulating device cover 320. The controller 500 can be included in a wet electrostatic precipitator controller for controlling the wet electrostatic precipitator 1, or it can be constructed separately from the wet electrostatic precipitator controller. The controller 500 can be implemented by a computing device including a microprocessor, memory, etc., and since its implementation is obvious to those skilled in the art, a detailed explanation thereof is omitted.

[0073] In the precipitation mode where particulate matter contained in the exhaust gas settles in the wet electrostatic precipitator 1, the controller 500 can control the insulator contamination prevention fluid to be sprayed onto the surface of the insulator 330 through the insulation cover 320. For example, the controller 500 can close the second supply valve 5 and the fourth supply valve 9, and open the first supply valve 3 and the third supply valve 7. Furthermore, nitrogen or compressed dry air used as the insulator contamination prevention fluid can be sprayed onto the surface of the insulator 330 through the insulation cover 320.

[0074] In the insulator cleaning mode, where the surface of insulator 330 is being cleaned, controller 500 can control the electrical connection between the power supply and discharge electrode 200 to be interrupted. Furthermore, controller 500 can control the spraying of insulator contamination prevention fluid and insulator cleaning fluid through insulating cover 320 onto the surface of insulator 330. Because the insulator contamination prevention fluid and the insulator cleaning fluid are sprayed together through insulating cover 320, the cleaning of the surface of insulator 330 can be performed more effectively. For example, first supply valve 3, second supply valve 5, third supply valve 7, and fourth supply valve 9 can be opened by controller 500. Additionally, water used as the insulator cleaning fluid and nitrogen or compressed dry air used as the insulator contamination prevention fluid can be sprayed onto the surface of insulator 330 through insulating cover 320.

[0075] In the insulator drying mode where the surface of insulator 330 is being dried, controller 500 can control the spraying of insulator drying fluid onto the surface of insulator 330 through insulating device cover 320. For example, controller 500 can close the second supply valve 5 and the fourth supply valve 9, and open the first supply valve 3 and the third supply valve 7. Furthermore, nitrogen or compressed dry air used as the insulator drying fluid can be sprayed onto the surface of insulator 330 through insulating device cover 320.

[0076] In the following text, see references Figures 7 to 10 The operation and effects of the insulating device with the above-described structure and the wet electrostatic precipitator with the insulating device will be explained.

[0077] according to Figure 7 and Figure 8In the precipitation mode, the discharge electrode 200 can be electrically connected to a high-voltage power supply via the electrode connection member 400. Additionally, the particulate discharge fluid can flow on the inner surface of the wet electrostatic precipitator 1. Furthermore, exhaust gas can enter the wet electrostatic precipitator 1. With the discharge electrode 200 electrically connected to the power supply, when exhaust gas enters the wet electrostatic precipitator 1, the particulates contained in the exhaust gas become charged, and the charged particulates can precipitate on the inner surface of the wet electrostatic precipitator 1. The particulates precipitated on the inner surface of the wet electrostatic precipitator 1 can be discharged from the wet electrostatic precipitator 1 via the particulate discharge fluid. Furthermore, purified gas, which is exhaust gas from which particulates have been removed, can be discharged from the wet electrostatic precipitator 1.

[0078] Simultaneously, within the insulation device 300, under the control of the controller 500, an insulator contamination prevention fluid can be sprayed onto the insulator 330 through the insulation device cover 320. This prevents particulate contamination of the surface of the insulator 330 by particles that have not been removed and are still contained in the purified gas flowing into the insulation device 300, thus adhering to the surface of the insulator 330.

[0079] refer to Figure 9 In the insulator cleaning mode, the electrical connection between the power supply and the discharge electrode 200 can be initially blocked by the controller 500. After the electrical connection between the power supply and the discharge electrode 200 is blocked, under the control of the controller 500, both the insulator contamination prevention fluid and the insulator cleaning fluid can be sprayed onto the insulator 330 through the insulating device cover 320. Therefore, particles adhering to the surface of the insulator 330 can be cleaned. In the insulator cleaning mode, the insulating area cleaning fluid can be sprayed from the insulating area cleaning fluid nozzle 340 to the insulating area 310-1. Furthermore, in the insulator cleaning mode, the guiding area cleaning fluid can be sprayed from the guiding area cleaning fluid nozzle 132 to the discharge guiding area 130-1.

[0080] according to Figure 10 In the insulator drying mode, under the control of the controller 500, the insulator drying fluid can be sprayed onto the insulator 330 through the insulating device cover 320, thereby allowing the surface of the insulator 330 to dry. After a certain period of time following the spraying of the insulator drying fluid onto the insulator 330 through the insulating device cover 320, the power supply and discharge electrode 200 can be electrically connected to each other under the control of the controller 500.

[0081] The insulator cleaning mode and the insulator drying mode can be executed periodically or non-periodically. For example, if the precipitation mode is executed for one hour, the insulator cleaning mode and the insulator drying mode are each executed for four minutes.

[0082] Thus, in the precipitation mode, since the insulator contamination prevention fluid is sprayed onto the insulator 330 through the insulation cover 320, the present invention achieves the effect of preventing contamination of the surface of the insulator 330 in the precipitation mode. Furthermore, in the periodic or non-periodic insulator cleaning mode and the insulator drying mode, the insulator contamination prevention fluid and the insulator cleaning fluid are sprayed onto the insulator 330 through the insulation cover 320 to clean the insulator 330, and the insulator drying fluid is sprayed to dry the insulator 330. Therefore, the present invention achieves the effect of minimizing contamination of the surface of the insulator 330. In addition, the present invention also increases the operating time of the wet electrostatic precipitator 1 by minimizing insulation breakdown and high-voltage short circuits caused by contamination of the surface of the insulator 330 in the wet electrostatic precipitator 1.

[0083] The embodiments disclosed herein are to be considered illustrative rather than restrictive in all respects and should be interpreted as having the widest scope of the technical concepts disclosed herein. The above embodiments can be implemented in various forms. Furthermore, the above embodiments may be omitted, substituted, or modified in various forms without departing from the scope of the appended claims and their spirit, and it is obvious that these various modifications and substitutions to the disclosed embodiments should fall within the scope of this invention.

[0084] Figure Labels 1: Wet electrostatic precipitator; 2: First supply pipe 3: First supply valve; 4: Second supply pipe 5: Second supply valve; 6: Third supply pipe 7: Third supply valve; 8: Fourth supply pipe 9: Fourth supply valve; 100: Sedimenter body 100-1: Gas processing area; 110: Precipitation unit 110-1: Sedimentation zone 111: Sedimentation zone forming components 112: Electrode Cleaning Fluid Nozzle 120: Particulate emission fluid supply unit 120-1: Particulate emission fluid supply area 121: Supply area forming components 122: Particulate Emission Fluid Supply Path 130: Emission Guidance Unit 130-1: Emission Guiding Zone; 131: Emission Guiding Zone Forming Component 132: Guided Area Cleaning Fluid Nozzle 200: Discharge electrode 210: Electrode body 220: Discharge pin 300: Insulation device; 310: Main body of insulation device 310-1: Insulated Area; 320: Insulated Device Cover 321: First fluid injection cover; 321-1: First fluid supply path 321-2: Fluid flow zone; 321-3: Fluid jet outlet 321-4: Main part of the first spray cover; 321-41: First through hole 321-42: First flow zone forming section; 321-5: First injection cap auxiliary section 321-51: Fluid jet outlet opening; 321-52: Second flow zone formation section 322: Second fluid injection cap; 322-1: Second fluid supply path 322-2: Fluid flow path; 322-3: Fluid jet path 322-4: Main part of the second spray cover; 322-41: Second through hole 322-42: Flow path forming section; 322-5: Second injection cap auxiliary section 322-51: Third through hole; 330: Insulator 331: Through hole in component 340: Insulated Area Cleaning Fluid Nozzle 400: Electrode connecting member; 410: First connecting member 420: Second connecting member; 430: Third connecting member 500: Controller; VL: Virtual line.

Claims

1. An insulating device, comprising: An insulating device body forming an insulating region is connected to a wet electrostatic precipitator, such that one open side of the insulating region communicates with the interior of the wet electrostatic precipitator. An insulating device cover, which is connected to the insulating device body to close another open side of the insulating area; as well as An insulator passes through the insulating device cover, such that one side of the insulator is disposed in the insulating region and the other side of the insulator is disposed outside the insulating device cover. A portion of the electrode connection member extending from the interior of the wet electrostatic precipitator into the insulating region passes through the insulator, which extends to the exterior of the insulating device cover to insulate a portion of the electrode connection member. The insulating device cover is configured to spray at least one of the following onto the insulator: an insulator contamination prevention fluid for preventing contamination of the surface of the insulator, an insulator cleaning fluid for cleaning the surface of the insulator, and an insulator drying fluid for drying the surface of the insulator.

2. The insulation device according to claim 1, wherein, The insulating device cover includes a first fluid injection cover through which the insulator passes, the first fluid injection cover being configured to inject at least one of the following along the circumference of the insulator at an angle to the longitudinal direction of the insulator: an insulator contamination prevention fluid, an insulator cleaning fluid, and an insulator drying fluid.

3. The insulating device according to claim 2, wherein the first fluid injection cover comprises: A first fluid supply path is connected to an insulator contamination prevention fluid supply source, an insulator cleaning fluid supply source, and an insulator drying fluid supply source. A fluid flow region connected to a first fluid supply path, wherein at least one of an insulator contamination prevention fluid, an insulator cleaning fluid, and an insulator drying fluid supplied through the first fluid supply path flows in the fluid flow region; as well as A fluid jet outlet is disposed at the circumference of the insulator to communicate with the fluid flow area, the fluid jet outlet being configured such that at least one of the insulator contamination prevention fluid, the insulator cleaning fluid, and the insulator drying fluid is jetted through the fluid jet outlet.

4. The insulation device according to claim 3, wherein, The first fluid supply path is formed as a virtual line parallel to the center of a transverse cross-section passing through the insulator, and spaced apart from the virtual line on one or the other side, the transverse cross-section being a cross-section of the insulator perpendicular to the longitudinal direction of the insulator.

5. The insulation device according to claim 3, wherein, The size of the transverse cross-section of the fluid flow region decreases toward the fluid jet outlet, and the transverse cross-section is the cross-section of the fluid flow region perpendicular to the longitudinal direction of the insulator.

6. The insulating device according to claim 3, wherein the first fluid injection cover comprises: The main part of the first spray cover includes a first through-hole through which the insulator passes, a first fluid supply path, and a first flow region forming portion, the first flow region forming portion being radially spaced from and surrounding the first through-hole. as well as A first injection cap auxiliary portion includes a fluid injection outlet opening and a second flow region forming portion. The fluid injection outlet opening forms the fluid injection outlet along the longitudinal direction of the insulator between one end of the first flow region forming portion. The second flow region forming portion extends from the fluid injection outlet opening toward the main portion of the first injection cap to form the fluid flow region together with the first flow region forming portion.

7. The insulating device of claim 2, wherein the insulating device cover further comprises a second fluid spray cover connected to the first fluid spray cover and the insulating device body to close the other open side of the insulating region together with the first fluid spray cover, the insulator passing through the second fluid spray cover, the second fluid spray cover being configured to spray at least one of the insulator contamination prevention fluid, the insulator cleaning fluid, and the insulator drying fluid at an angle to the circumferential direction of the insulator.

8. The insulating device according to claim 7, wherein the second fluid injection cover comprises: The second fluid supply path is connected to the insulator contamination prevention fluid supply source, the insulator cleaning fluid supply source, and the insulator drying fluid supply source; A fluid flow path connected to a second fluid supply path, through which at least one of an insulator contamination prevention fluid, an insulator cleaning fluid, and an insulator drying fluid supplied by the second fluid supply path flows in the fluid flow path; as well as Multiple fluid injection paths are connected to the fluid flow path and arranged along the circumference of the insulator, and the multiple fluid injection paths inject at least one of the insulator contamination prevention fluid, the insulator cleaning fluid, and the insulator drying fluid.

9. The insulating device according to claim 8, wherein, The fluid injection path extends toward the insulator at an angle to the circumferential direction of the insulator.

10. The insulating device according to claim 8, wherein the second fluid injection cover comprises: The second spray cover main portion includes a second through-hole through which the insulator passes, a second fluid supply path, and a flow path forming portion that is radially spaced from and surrounds the second through-hole; as well as The second injection cap auxiliary portion includes a third through-hole through which the insulator passes, and the plurality of fluid injection paths are formed to communicate with the third through-hole, the second injection cap auxiliary portion together with the flow path forming portion forming the fluid flow path.

11. A wet electrostatic precipitator, comprising: The precipitator body is grounded and has a gas treatment area, wherein waste gas containing particulates enters and flows in the gas treatment area, and purified gas is discharged from the gas treatment area, the purified gas being the waste gas from which particulates have been removed. A discharge electrode is disposed in the gas processing area and spaced apart from the precipitator body; An insulating device having an insulating region and being connected to the precipitator body, such that an open side of the insulating region communicates with the gas processing region; and An electrode connection member is provided, with one side connected to a discharge electrode and the other side passing through a portion of the gas processing area and an insulating area through the insulating device. The electrode connection member extends to the outside of the insulating device for connection to a power source. The insulating device includes an insulator, a portion of the electrode connection member passing through the insulator to insulate that portion of the electrode connection member. The insulating device is configured to spray at least one of an insulating contamination prevention fluid for preventing contamination of the surface of the insulator, an insulating cleaning fluid for cleaning the surface of the insulator, and an insulating drying fluid for drying the surface of the insulator onto the insulator.

12. The wet electrostatic precipitator according to claim 11, wherein the insulation device further comprises: The main body of the insulating device that forms an insulating region; as well as An insulating device cover, which is attached to the insulating device body to close another open side of the insulating area. The insulator passes through the insulating device cover, such that one side of the insulator is disposed in the insulating region, and the other side of the insulator is disposed outside the insulating device cover. The insulating device cover is configured to spray at least one of the insulator contamination prevention fluid, the insulator cleaning fluid, and the insulator drying fluid onto the insulator.

13. The wet electrostatic precipitator according to claim 12, further comprising a controller for controlling the supply of the insulator contamination prevention fluid, the insulator cleaning fluid, and the insulator drying fluid to the insulating device cover. in, The controller performs the following control: The particulate matter contained in the exhaust gas is settled in the precipitation mode of the wet electrostatic precipitator, and the insulator contamination prevents fluid from being sprayed onto the surface of the insulator through the cover of the insulator. In the insulator cleaning mode where the surface of the insulator is cleaned, the insulator contamination prevention fluid and the insulator cleaning fluid are sprayed onto the surface of the insulator through the insulator cover, while the electrical connection between the power supply and the discharge electrode is blocked. as well as In the insulator drying mode, where the surface of the insulator is dried, the power supply and discharge electrodes are electrically connected to each other after the insulator drying fluid is sprayed onto the surface of the insulator.

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