Rectifier dust collecting electrode plate and electric dust collector

Abstract

The application discloses a rectifier type dust collecting plate for dust removal and belongs to the technical field of environmental purification equipment. The head of the rectifying member in the rectifier type dust collecting plate is similar to the head of a water drop, and the windward surface of the rectifying member at the end of the dust collecting member adopts a first arc convex surface, so that when flue gas flows through the area, the flue gas flows smoothly and cannot form turbulent flow and vortex flow. Secondly, under the flow guiding effect of the arc-shaped rectifying member at the head, the flue gas enters the electric field smoothly and cannot affect the surface of the plate at the rear end, a plurality of inflow holes are designed on the windward surface of the rectifying member, part of the flue gas enters the flue gas rectifying cavity through the inflow hole opposite to the airflow, and then flows out through the side discharge hole after being rectified by the flue gas rectifying cavity, so that the jet problem caused by the high wind speed and the uneven airflow at the front end and the too high local wind speed is avoided, the flue gas speed is reduced to form a buffer airflow, and the dust flow diffused out also enters the electric field to be charged and collected by the plate.

Description

Technical Field

[0001] This application relates to the field of environmental purification equipment technology, and in particular to a rectifier dust collection plate and an electrostatic precipitator for dust removal. Background Technology

[0002] Electrostatic precipitator is a type of gas dust removal method. When dust-laden gas passes through a high-voltage electrostatic field, it is electrically separated. Dust particles combine with negative ions and become negatively charged, then tend to discharge and deposit on the anode surface.

[0003] Currently, the plate-type dust collection plates in electrostatic precipitators have poor airflow guidance effect and low dust collection efficiency. Summary of the Invention

[0004] This application provides a rectifier-type dust collection plate for dust removal. It solves the problems of poor airflow guidance and low dust collection efficiency of plate-type dust collection plates in existing electrostatic precipitators. The technical solution is as follows: On the one hand, a rectifier dust collection electrode plate for dust removal is provided, the rectifier dust collection electrode plate for dust removal includes: a dust collection component and a rectifier component; The dust collection component has two dust collection surfaces arranged perpendicular to the direction of flue gas flow on both sides. The rectifier is fixed to one end of the dust collector on the windward side. The inner wall of the rectifier forms a flue gas rectifier cavity. The outer wall of the rectifier includes a windward surface and two side surfaces disposed between the windward surface and the two dust collector surfaces. The two side surfaces are arranged opposite to each other and are respectively connected to the windward surface and the corresponding dust collector surface. The windward surface is a first arc-shaped convex surface. The rectifier is provided with at least one inlet hole distributed on the windward side and communicating with the flue gas rectifier cavity, and at least one outlet hole distributed on at least one side and communicating with the flue gas rectifier cavity.

[0005] Optionally, the rectifier includes: a rectifier shroud and a dust filter plate connected to each other, wherein the dust filter plate is distributed between the rectifier shroud and the dust collection component; The flue gas rectifier cavity is formed between the hood and the dustproof plate; the hood is provided with the windward side and two side sides, and the dustproof plate is connected between the two side sides; the side of the dustproof plate facing the hood is a second arc-shaped convex surface.

[0006] Optionally, both the first arc-shaped convex surface and the second arc-shaped convex surface are circular arc surfaces, and the radius of the first arc-shaped convex surface is greater than the radius of the second arc-shaped convex surface.

[0007] Optionally, both sides are provided with drainage holes, and the drainage holes on each side are inclined toward the corresponding dust collection surface.

[0008] Optionally, there are multiple inlet holes, and the multiple inlet holes are arranged in two symmetrical groups with respect to the central axis of the fairing. Each group of inlet holes includes at least one row of inlet holes arranged along the circumferential direction of the windward side, and each row of inlet holes includes multiple inlet holes arranged in an array along the height direction of the fairing.

[0009] Optionally, the plurality of vent holes are arranged as two sets of vent holes symmetrically disposed on the two sides, each set of vent holes includes a row of inlet holes, and each row of vent holes includes a plurality of vent holes arranged in an array along the height direction of the fairing.

[0010] Optionally, the dust collection component includes two dust collection plates arranged opposite each other in a direction perpendicular to the flue gas flow direction, with the sides of the two dust collection plates fixedly connected to the two sides of the hood respectively; wherein, the side of one dust collection plate facing away from the other dust collection plate is the dust collection surface.

[0011] Optionally, the dust collection surfaces of both dust collection plates are concave arc surfaces.

[0012] Optionally, both concave arc surfaces are circular arc surfaces, and the curvature of the two circular arc surfaces is the same.

[0013] Optionally, the radius of the first arc-shaped convex surface is R1, and the radius of the second arc-shaped convex surface is R2. The value range of the radius R2 of the second arc-shaped convex surface is (R1-5) mm to (R1-2) mm.

[0014] Optionally, the dust collection surface of the dust collection component, the plate surface of the dust separator, and the plate surface of the hood all extend vertically and have the same height in the vertical direction.

[0015] Optionally, the dust collector plate for dust removal is provided with two rectifiers; wherein the two rectifiers are distributed at two opposite ends of the dust collector along the flue gas flow direction.

[0016] On the other hand, this application also provides an electrostatic precipitator, including: a flue gas passage, and a rectifier dust collection plate and a cathode wire installed in the flue gas passage, wherein the rectifier dust collection plate is any of the rectifier dust collection plates described above.

[0017] The beneficial effects of the technical solutions provided in this application include at least the following: The rectifier element in the rectifier-type dust collector plate has a first arc-shaped convex surface on its windward side, meaning the head of the rectifier element resembles a water droplet (similar to a windproof hook). Flue gas flows smoothly through this area without forming turbulence or eddies. The rectifier-type dust collector plate has two rectifier elements, distributed at two opposite ends of the dust collector along the flue gas flow direction. Thus, the rectifier-type dust collector plate resembles two elongated water droplets cross-linked, with both the windward and leeward sides resembling water droplet heads (similar to windproof hooks). The dust collector plate can be used alternately at both ends, improving installation flexibility and increasing its service life.

[0018] Secondly, under the guidance of the arc-shaped hood at the head, the flue gas enters the electric field smoothly and will not affect the surface of the electrode plate at the rear end. The electrode plate surface adopts a streamlined curved surface design, which can effectively guide the dust-laden airflow into the electrostatic precipitator, reduce its flow velocity on the curved surface, avoid the direct impact of high-speed airflow on the electrode plate, thereby significantly extending the service life of the electrode plate and suppressing secondary dust.

[0019] In addition, the curved dust collection plate adopts a curved design, and its dust collection surface is a concave arc surface. Compared with the plate dust collection electrode, the dust collection area is effectively increased, the field strength in each area of ​​the electrode plate is basically the same, the uniformity of plate current density is not much, the dust collection capacity is greatly enhanced, and the stability and efficiency of the dust removal process are ensured. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 This is a schematic diagram of the structure of a rectifier dust collection electrode plate for dust removal provided in an embodiment of this application; Figure 2 This is a top view of a rectifier dust collection electrode plate for dust removal provided in an embodiment of this application; Figure 3 This is a schematic diagram of the structure of a valve core housing provided in the embodiment of the application; Figure 4 This is a schematic diagram showing the unfolded shape of an arc-shaped fairing provided in an embodiment of this application; Figure 5 This is a schematic diagram of the relative position structure of a rectifier dust collection electrode plate and a cathode wire for dust removal provided in an embodiment of this application.

[0022] Among them, there are dust collection component 100, rectifier component 200, rectifier hood 201, dust isolation plate 202, arc-shaped rectifier hood body 201a, inclined plate 201b, dust collection plate 101, dust collection surface m1, first arc-shaped convex surface m2, second arc-shaped convex surface m3, side surface m4, flue gas rectification cavity Q, inlet hole k1, and outlet hole k2.

[0023] The accompanying drawings illustrate specific embodiments of this application, which will be described in more detail below. These drawings and descriptions are not intended to limit the scope of the concept in any way, but rather to illustrate the concept of this application to those skilled in the art through reference to particular embodiments. Detailed Implementation

[0024] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0025] It should be understood that the phrase "one embodiment" or "an embodiment" throughout the specification means that a specific feature, structure, or characteristic related to the embodiment is included in at least one embodiment of the invention. Therefore, "in one embodiment" or "in an embodiment" appearing throughout the specification do not necessarily refer to the same embodiment. Furthermore, these specific features, structures, or characteristics can be combined in any suitable manner in one or more embodiments.

[0026] Among the relevant technologies, 1. Conventional dust collection plates are equipped with windproof hooks at the tail end. However, while the windproof hooks are theoretically flat structures, essentially using a "blocking" method, in actual operation, when the airflow comes into contact with the windproof hooks, it diffuses disorderly to both sides, easily forming eddies and disturbing the dust layer on the plate surface, reducing the effective utilization rate of the plates. 2. Some technologies also install a concave conductive filter groove at the tail end of the electric field. However, the concave conductive filter groove has almost no effect on suppressing the dust flow velocity on the plate surface. Moreover, as the operating time increases, the through holes often become blocked, causing dust accumulation. Long-term dust accumulation can lead to electrochemical corrosion of the screen, affecting its service life. The dust accumulation on the screen, combined with the weight of the conductive filter groove itself, increases the load on the anode plate, weakening the transmission of rapping force. On the other hand, dust accumulation leads to a significant increase in the resistance of the electrostatic precipitator. Operational units have shown that the resistance in some projects has increased to 800~1000Pa, causing a significant increase in fan pressure. Some projects with insufficient fan margin even operate at reduced load. 3. In existing technologies, airfoil-shaped guide vanes are selectively installed on the windproof hooks of the dust collection plates. The purpose is to guide and slow down the airflow on the surface of the plates. The airfoil-shaped guide vanes have a good guiding and slowing effect on the last anode plate, but their guiding and slowing effect on other plates is limited. They can only play a partial guiding and slowing effect, and the improvement in dust removal efficiency does not meet expectations.

[0027] Please refer to Figures 1 to 5 , Figure 1 This is a schematic diagram of the structure of a rectifier dust collection electrode plate for dust removal provided in an embodiment of this application. Figure 2 This is a top view of a rectifier dust collection electrode plate for dust removal provided in an embodiment of this application. Figure 3 This is a partial structural schematic diagram of a rectifier dust collection electrode plate for dust removal provided in an embodiment of this application. Figure 4 This is a schematic diagram showing the unfolded shape of an arc-shaped fairing provided in an embodiment of this application. Figure 5 This is a schematic diagram illustrating the relative position structure of a rectifier-type dust collector electrode plate and a cathode wire for dust removal, provided in an embodiment of this application. The rectifier-type dust collector electrode plate for dust removal may include: a dust collector 100 and a rectifier 200. Figure 2 The arrows in the diagram indicate the direction of the flue gas.

[0028] The dust collection element 100 in the rectifier dust collection plate for dust removal has two dust collection surfaces m1 arranged perpendicular to the flue gas flow direction on both sides.

[0029] The rectifier 200 in the rectifier dust collection plate can be fixed to one end of the dust collection component 100 on the windward side. The inner wall of the rectifier 200 can form a flue gas rectifier cavity Q. The outer wall of the rectifier 200 includes a windward surface m2 and two side surfaces m4 disposed between the windward surface m2 and the two dust collection surfaces m1. The two side surfaces m4 and the two dust collection surfaces m1 can correspond one-to-one. The two side surfaces m4 are arranged opposite to each other and are respectively connected to the windward surface m2 and the corresponding dust collection surface m1. The windward surface m2 is a first arc-shaped convex surface.

[0030] Here, the rectifier-type dust collection plate for dust removal is equipped with two rectifiers 200, which are distributed at two opposite ends of the dust collection component 100 along the flue gas flow direction. In this way, the rectifier-type dust collection plate is similar to two elongated water droplets cross-linked together, with the windward and leeward sides serving as the heads of the water droplets (similar to the function of windproof hooks). The dust collection plate can be used alternately at both ends, improving the installation flexibility of the dust collection plate and increasing its service life.

[0031] The rectifier 200 is provided with at least one inlet hole k1 located on the windward side m2 and communicating with the flue gas rectifier cavity Q, and at least one outlet hole k2 located on at least one side m4 and communicating with the flue gas rectifier cavity Q.

[0032] The working principle of the rectifier dust collection plate for dust removal is as follows: At the end of the dust collection component, a rectifier 200 with a first arc-shaped convex surface m2 is used to replace the traditional flat windproof hook. The head of the rectifier 200 is similar to the head of a water droplet, which guides the dust flow into the electric field to achieve charging and be captured by the plate. In order to avoid the jet problem caused by excessive local wind speed due to high wind speed and uneven airflow at the front end, several inlet holes are designed on the windward side of the rectifier. Some flue gas enters the interior of the rectifier through the inlet holes facing the airflow, and after being rectified by the flue gas rectification chamber, it flows out through the side drain hole. The speed is reduced to form a buffer airflow. The escaped dust flow also enters the electric field to achieve charging and be captured by the plate, which increases the dust collection efficiency of the dust collection component to a certain extent.

[0033] In this embodiment, the head of the rectifier 200 in the rectifier-type dust collector plate resembles a water droplet (similar to a windproof hook function). The windward surface m2 of the rectifier 200 at the end of the dust collector 100 adopts a first arc-shaped convex surface, allowing the flue gas to flow smoothly through this area without forming turbulence or eddies. Secondly, under the guiding effect of the arc-shaped rectifier at the head, the flue gas enters the electric field smoothly without affecting the surface of the rear electrode plate. Several inlet holes k1 are designed on the windward surface m2 of the rectifier 200. Some flue gas enters the flue gas rectification cavity Q through the inlet holes k1 facing the airflow, and flows out through the side outlet holes k2 after being rectified by the flue gas rectification cavity Q. This avoids the jet problem caused by excessively high local wind speed due to high wind speed and uneven airflow at the front end. The flue gas velocity is reduced to form a buffer airflow, and the escaped dust also enters the electric field to become charged and is captured by the electrode plate.

[0034] In summary, this application provides a rectifier-type dust collection electrode plate for dust removal, which may include a dust collection component and a rectifier component. The head of the rectifier component in the rectifier-type dust collection electrode plate is similar to the head of a water droplet (similar to the function of a windproof hook). The windward surface of the rectifier component at the end of the dust collection component adopts a first arc-shaped convex surface, so that the flue gas flows smoothly through this area without forming turbulence or eddies. Secondly, under the guiding effect of the arc-shaped rectifier component at the head, the flue gas enters the electric field smoothly without affecting the surface of the electrode plate at the rear end. Several inlet holes are designed on the windward surface of the rectifier component. Some flue gas enters the flue gas rectification cavity through the inlet holes facing the airflow, and after being rectified by the flue gas rectification cavity, it flows out through the side drain holes. This avoids the jet problem caused by excessively high local wind speed due to high wind speed and uneven airflow at the front end. The flue gas velocity is reduced to form a buffer airflow, and the escaped dust also enters the electric field to become charged and is captured by the electrode plate.

[0035] Optionally, the rectifier 200 may include a rectifier hood 201 and a dust-proof plate 202 connected to each other, with the dust-proof plate 202 distributed between the rectifier hood 201 and the dust collector 100. A flue gas rectification cavity Q is formed between the rectifier hood 201 and the dust-proof plate 202. The rectifier hood 201 has a windward surface m2 and two side surfaces m4. The dust-proof plate 202 is connected between the two side surfaces m4, and the side of the dust-proof plate 202 facing the rectifier hood 201 has a second arc-shaped convex surface m3. Thus, the rectifier hood 201 with its windward surface m2 and the dust-proof plate 202 together form the flue gas rectification cavity Q. The second arc-shaped convex surface m3 of the dust-proof plate 202 can rectify the flue gas entering the rectification cavity before it flows out through the vent hole k2. The flue gas velocity decreases, forming a buffered airflow. The escaped dust also enters the electric field, becomes charged, and is captured by the electrode plates.

[0036] Here, the dust collection surface m1 of the dust collection component 100, the plate surface of the dust separator 202, and the plate surface of the shroud 201 can all extend vertically, and their heights in the vertical direction are the same.

[0037] For example, the fairing 201 may include: an arc-shaped fairing body 201a with a first arc-shaped convex surface and two inclined plates 201b, each inclined plate 201b having a side surface m4, and the two sides of the two inclined plates 201b being fixedly connected to the arc-shaped fairing body 201a and two dust collection surfaces m1, respectively. The arc-shaped fairing body 201a has an inlet hole k1, and the two inclined plates 201b have outlet holes k2 on their respective sides. Here, the arc-shaped fairing body 201a is an arc-shaped plate, and the arc-shaped fairing body 201a, the inclined plates 201b, and the dust-collecting plate 202 can be an integral structure.

[0038] In the embodiments of this application, such as Figure 2 and Figure 3As shown, both the first arc-shaped convex surface m2 in the hood 201 and the second arc-shaped convex surface m3 in the dustproof plate 202 can be arc surfaces, and the radius of the first arc-shaped convex surface m2 is larger than the radius of the second arc-shaped convex surface m3. For example, the radius of the first arc-shaped convex surface m2 in the arc-shaped hood 201 is R1, and the radius of the second arc-shaped convex surface m3 in the dustproof plate 202 is R2. The radius R2 of the second arc-shaped convex surface m3 ranges from (R1-5) mm to (R1-2) mm. The positioning dimension L1 of the dustproof plate 202 is selected from 20 mm to 50 mm, and L1 can be the horizontal distance between the side of the dustproof plate 202 and the apex of the arc-shaped hood 201. It should be noted that the higher the flue gas velocity and the worse the uniformity, the larger the value of R1. The value of R1 can range from 15 mm to 35 mm. The positioning dimension L1 of the dustproof plate 202 is selected from 20mm to 50mm.

[0039] In this application, both sides m4 of the fairing 201 can be provided with vent holes k2, and the vent holes k2 on each side m4 are inclined toward the corresponding dust collection surface m1. That is, the outlet of the vent hole k2 is more inclined toward the dust collection surface m1 than the inlet of the vent hole k2.

[0040] Optional, please refer to Figure 1 and Figure 4 There are multiple inlet holes k1, arranged symmetrically in two groups relative to the central axis of the fairing. Each group of inlet holes k1 includes at least one row of inlet holes arranged along the circumferential direction of the windward surface m2, and each row of inlet holes k1 includes multiple inlet holes k1 arranged in an array along the height direction of the fairing 201. Here, each inlet hole k1 is a strip-shaped hole extending along the height direction of the arc-shaped fairing 201. For example, the strip-shaped hole can be an elliptical hole or a waist-shaped hole. Here, the hole spacing L2 between two adjacent rows of inlet holes k1 is L2 = π*R1 / (B+1), where B is the number of rows of inlet holes. H1 is the initial punching positioning size, selected from 100mm to 300mm.

[0041] In this application, the multiple vent holes k2 are arranged as two sets of vent holes symmetrically disposed on the two sides m4 of the fairing 201. Each set of vent holes includes a row of inlet holes, and each row of vent holes k2 includes multiple vent holes arranged in an array along the height direction of the fairing 201.

[0042] For example, the width of the inlet hole k1 in the rectifier dust collector plate is L3, and the width of the outlet hole k2 is L4, where L4 = B / 2 × L3, and B is the number of rows of inlet holes k1. This effectively ensures the consistency of the airflow rate in and out of the rectifier dust collector plate. Here, the flue gas velocity is high and the uniformity is poor, so the larger the value of L3, the more likely it is to be. The value of L3 can range from 1mm to 3mm.

[0043] Optionally, the dust collection component 100 includes two dust collection plates 101 arranged opposite each other in a direction perpendicular to the flue gas flow direction, with the sides of the two dust collection plates 101 respectively fixedly connected to the two sides m4 of the hood 201. The side of one dust collection plate 101 facing away from the other dust collection plate 101 is the dust collection surface m1.

[0044] In this embodiment, the dust collection surfaces m1 of both dust collection plates 101 can be concave arc surfaces. The dust collection surface of the anode curved dust collection plate is a streamlined concave arc surface, with the concave direction away from the cathode line Y direction. Through the above setting, the airflow will not scour the anode plate surface, and the dust resting zone (i.e., the dust flow velocity in this area is slowed down) is increased, which can effectively prevent the peeling dust and secondary dust from vibration caused by the airflow scouring the electrode plate. Compared with the traditional plate anode plate, this type of anode plate increases the dust collection area (the arc plate surface increases it by about 15%), and because the dust collection surface is curved, similar to the circular tube discharge effect, the plate current density uniformity is better, and the charging and dust collection effects are better.

[0045] In this way, rectifiers replace the traditional flat windproof hooks at both ends of the dust collection plate. The arc-shaped rectifier 201, similar to the head of a water droplet, guides the dust flow into the electric field to achieve charging and be captured by the electrode plates. To avoid jet problems caused by excessive local wind speed due to high wind speed and uneven airflow at the front end, several vertically arranged inlet holes k1 are designed on the windward side of the arc-shaped rectifier 201. Some flue gas enters the interior of the arc-shaped rectifier 201 through the inlet holes k1 facing the airflow, and after being rectified by the dust-proof plate 202, it flows out through the side outlet holes k2. The escaped dust flow also enters the electric field to achieve charging and be captured by the electrode plates. In addition, the dust collection surface of the anode plate is a streamlined curved surface, and the concave direction of the curved surface is away from the cathode line. Through the above measures, the dust-laden airflow entering the electrostatic precipitator can be effectively guided, reducing its flow velocity on the curved surface and avoiding the direct impact of high-speed airflow on the electrode plates, thereby significantly extending the service life of the electrode plates and suppressing secondary dust. In addition, the curved dust collection plate adopts a curved design, and its dust collection surface is a concave arc surface. Compared with the plate dust collection electrode, the dust collection area is effectively increased, the field strength in each area of ​​the electrode plate is basically the same, the uniformity of plate current density is not much, the dust collection capacity is greatly enhanced, and the stability and efficiency of the dust removal process are ensured.

[0046] Optional, such as Figure 2 and Figure 3 As shown, the concave arc surfaces m1 in both curved dust collection plates 101 can be circular arc surfaces, and the curvature of the two circular arc surfaces is the same. For example, the radius of the concave arc surface m1 in the curved dust collection plate 101 is R3, and the value of R3 ranges from 250mm to 2000mm. Furthermore, the width L of the entire dust collection plate ranges from 300mm to 500mm, and the plate height H ≤ 16m.

[0047] In summary, this application provides a rectifier-type dust collection electrode plate for dust removal, which may include a dust collection component and a dust separator. The rectifier-type dust collection electrode plate is generally similar to two elongated water droplets cross-linked together, with the windward and leeward sides forming the droplet heads (similar to windproof hooks). Flue gas flows smoothly through this area without forming turbulence or eddies. Furthermore, under the guiding effect of the arc-shaped rectifier head, the flue gas enters the electric field smoothly without affecting the electrode plate surface at the rear. The electrode plate surface adopts a streamlined curved surface design, which effectively guides the dust-laden airflow entering the electrostatic precipitator, reducing its velocity on the curved surface and avoiding direct impact of high-speed airflow on the electrode plate. This significantly extends the service life of the electrode plate and suppresses secondary dust generation. In addition, the curved dust collection plate adopts a curved design, and its dust collection surface is a concave arc surface. Compared with the plate dust collection electrode, the dust collection area is effectively increased, the field strength in each area of ​​the electrode plate is basically the same, the uniformity of plate current density is not much, the dust collection capacity is greatly enhanced, and the stability and efficiency of the dust removal process are ensured.

[0048] In this application, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. The term "multiple" refers to two or more unless otherwise expressly defined.

[0049] The above description is merely an optional embodiment of this application and is not intended to limit this application. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A rectifier-type dust collection plate for dust removal, characterized in that, include: Dust collection components and rectifier components; The dust collection component has two dust collection surfaces arranged perpendicular to the direction of flue gas flow on both sides. The rectifier is fixed to one end of the dust collector on the windward side. The inner wall of the rectifier forms a flue gas rectifier cavity. The outer wall of the rectifier includes a windward surface and two side surfaces disposed between the windward surface and the two dust collector surfaces. The two side surfaces are arranged opposite to each other and are respectively connected to the windward surface and the corresponding dust collector surface. The windward surface is a first arc-shaped convex surface. The rectifier is provided with at least one inlet hole distributed on the windward side and communicating with the flue gas rectifier cavity, and at least one outlet hole distributed on at least one side and communicating with the flue gas rectifier cavity. The rectifier includes: a rectifier hood and a dust filter plate connected to each other, wherein the dust filter plate is distributed between the rectifier hood and the dust collection component; The flue gas rectifier cavity is formed between the hood and the dustproof plate; the hood is provided with the windward side and two side sides, and the dustproof plate is connected between the two side sides; the side of the dustproof plate facing the hood is a second arc-shaped convex surface.

2. The rectifier-type dust collection plate for dust removal according to claim 1, characterized in that, Both the first and second arc-shaped convex surfaces are circular arc surfaces, and the radius of the first arc-shaped convex surface is greater than the radius of the second arc-shaped convex surface.

3. The rectifier-type dust collection plate for dust removal according to claim 1, characterized in that, Both sides are provided with drainage holes, and the drainage holes on each side are inclined toward the corresponding dust collection surface.

4. The rectifier-type dust collection plate for dust removal according to claim 1, characterized in that, The number of inlet holes is multiple, and the multiple inlet holes are arranged in two symmetrical groups relative to the central axis of the fairing. Each group of inlet holes includes at least one row of inlet holes arranged along the circumferential direction of the windward side, and each row of inlet holes includes multiple inlet holes arranged in an array along the height direction of the fairing.

5. The rectifier-type dust collection plate for dust removal according to claim 3, characterized in that, The plurality of vent holes are arranged in two sets of vent holes symmetrically on the two sides. Each set of vent holes includes a row of inlet holes, and each row of vent holes includes a plurality of vent holes arranged in an array along the height direction of the fairing.

6. The rectifier-type dust collection plate for dust removal according to claim 1, characterized in that, The dust collection component includes two dust collection plates arranged opposite each other in a direction perpendicular to the flue gas flow direction, with the sides of the two dust collection plates fixedly connected to the two side surfaces respectively; wherein, the side of one dust collection plate facing away from the other dust collection plate is the dust collection surface.

7. The rectifier-type dust collection plate for dust removal according to claim 6, characterized in that, The dust collection surfaces of both dust collection plates are concave arc surfaces.

8. The rectifier-type dust collection plate for dust removal according to claim 7, characterized in that, Both concave arc surfaces are circular arc surfaces, and the curvature of the two circular arc surfaces is the same.

9. The rectifier-type dust collection plate for dust removal according to claim 2, characterized in that, The radius of the first arc-shaped convex surface is R1, and the radius of the second arc-shaped convex surface is R2. The value range of the radius R2 of the second arc-shaped convex surface is (R1-5) mm to (R1-2) mm.

10. The rectifier-type dust collection plate for dust removal according to claim 1, characterized in that, The dust collection surface of the dust collection component, the surface of the dust separator plate, and the surface of the rectifier all extend vertically and have the same height in the vertical direction.

11. The rectifier-type dust collection plate for dust removal according to claim 1, characterized in that, The dust collector plate for dust removal is provided with two rectifiers; wherein the two rectifiers are distributed at two opposite ends of the dust collector along the flue gas flow direction.

12. An electrostatic precipitator, characterized in that, include: A flue gas passage, and a rectifier dust collection plate and cathode wire for dust removal as described in any one of claims 1-11, installed within the flue gas passage.

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