Large-rigidity inflatable anode plate

Abstract

The utility model discloses a high-rigidity inflatable anode plate which comprises an inflatable anode plate unit with a plurality of bulged inflatable cavities, and compared with the prior art, the high-rigidity inflatable anode plate has the advantages that the uniformity of current density can be improved, the airflow velocity on the surface of the anode plate can be reduced to reduce reentrainment of dust, and the equipment is simple in structure, suitable for batch production, low in cost and high in practicability. And the adaptability to existing electric dust removers is wide.

Description

Technical Field

[0001] The utility model relates to the technical field of flue gas pollutant treatment and electrostatic precipitation, in particular to a large-rigidity inflatable anode plate.

Background Art

[0002] Electrostatic precipitators are the mainstream equipment for industrial flue gas dust removal. Their core components mainly include the discharge cathode wires and the dust collection anode plates. The anode plates are usually also called dust collection plates or precipitation plates. Their function is to capture charged dust. Through the impact of the rapping mechanism, the plates are impacted and vibrated or shaken, so that the dust attached to the plate surface falls off the plate surface in flakes or lumps and into the ash hopper, achieving the purpose of dust removal.

[0003] The existing anode plates of electrostatic precipitators mainly include fish scale type, corrugated type, rod curtain type, Z-shaped type, small C-type, large C-type, W-type, Z-type plates, etc.

[0004] The fish scale type plate-shaped anode plate is composed of three layers of steel plates. Many fish scale-like notches and protrusions are made on the thin steel plates on both sides, and the notches are inclined upward towards the air flow direction. Theoretically, the performance of this kind of anode plate in preventing secondary dust emission is relatively good, but the distribution uniformity of the rapping acceleration on the plate surface is poor. In actual use, the notches of the fish scale plate are easily blocked by accumulated dust, and it cannot play the role of preventing secondary dust emission. This kind of anode plate has a large steel consumption, which is 2-3 times that of the C-type anode plate, and the process of manufacturing this kind of anode plate is also more complicated.

[0005] The corrugated anode plate is a thin steel plate pressed into a corrugated shape. It is lighter in weight and has greater rigidity, but its performance in preventing secondary dust emission and vibration is poor.

[0006] The rod curtain type anode plate is composed of a row of several Φ8 or Φ10 round steel bars. It is not easy to deform when used at high temperatures, has a large dust collection area, is corrosion-resistant, but has a large self-weight, consumes a lot of steel, and has a large secondary dust emission. Therefore, the electric field wind speed should be less than 0.8m / s. At present, it is mainly applied to high-temperature electrostatic precipitators.

[0007] The Z-shaped anode plate is a thin steel plate rolled into a Z-shaped shape. From the perspective of the cross-sectional shape composition, this kind of anode plate is basically composed of two parts. The middle part is relatively straight, and the two sides are made into hook shapes (generally called wind-proof grooves) to reduce secondary dust emission. Since the wind-proof grooves at both ends of this kind of anode plate face in opposite directions, the anode plate is prone to twist after being suspended.

[0008] The ZT-type anode plate is made by rolling a thin steel plate into a ZT shape, also known as a W-shaped anode plate. This anode plate uses a semi-circular arc to gradually transition to a trapezoid. When designing the cross-section, it is also ensured that any point on the surface of the anode plate maintains an equal distance from the corona wire, thereby obtaining an ideal corona current density distribution. However, in reality, due to manufacturing and installation deviations, the best current density distribution is only ideal. If it exceeds the allowable range of geometric tolerance, the current density distribution is worse than that of the C-shaped and Z-shaped anode plates.

[0009] The small C-shaped anode plate is a type of anode plate that emerged in the early 1960s. It is made of steel plate, and the width of its plate surface is 230 mm (also known as a trough-shaped plate). Since one side of this anode plate is exposed to the flue gas and directly washed by the gas flow, it is easy to cause secondary dust flying, so it was quickly replaced by the Z-type and C-type anode plates.

[0010] In summary, the anode plates equipped in existing conventional electrostatic precipitators are generally profiled plates, which have the advantages of simple structure and low cost, but have the disadvantages of low stiffness, poor transfer effect of the rapping force during rapping and dust cleaning, easy to cause secondary dust flying, uneven current density distribution, and large steel consumption. Against this background, the market urgently needs new anode plates for electrostatic precipitators.

Utility Model Content

[0011] The purpose of the present utility model is to solve the problems in the existing technology and propose a large-stiffness inflatable anode plate, which can improve the uniformity of the current density, reduce the gas flow velocity on the surface of the anode plate to reduce secondary dust flying, greatly reduce the structure of the equipment, is suitable for mass production, has low cost, and has a wide adaptability to the transformation of existing electrostatic precipitators.

[0012] To achieve the above purpose, the present utility model proposes a large-stiffness inflatable anode plate, which includes an inflatable anode plate unit with a number of bulging inflatable cavities.

[0013] Preferably, the inflatable anode plate unit includes two anode plate bodies stacked and connected together. The anode plate body is an integrally stamped structure with a number of bulging grooves, and two bulging grooves corresponding to the openings of the bulging grooves cooperate to form a bulging inflatable cavity.

[0014] Preferably, the two adjacent upper and lower bulging inflatable cavities are connected.

[0015] Preferably, an inflation port is provided on the lowermost bulging inflatable cavity.

[0016] Preferably, suspension parts and connection parts are respectively provided at the upper and lower ends of the inflatable anode plate unit, and a number of suspension holes are provided on the suspension parts.

[0017] Preferably, the suspension holes are semi-groove-shaped.

[0018] Preferably, the bulging inflatable cavity is in an oval shape.

[0019] Advantages of the utility model: 1. Good stiffness and good transmission effect of rapping force during rapping and dust cleaning. It is especially suitable for electrostatic precipitators with ultra-high electric field height where the anode plate height is greater than 15 meters and electrostatic precipitators with ultra-long electric field length where the number of anode plates connected in a single row exceeds 8 pieces;

[0020] 2. It can ensure that the stiffness and corrosion rate of the anode plate meet the requirements, and the steel consumption of the plate is small;

[0021] 3. The current density distribution on the surface of the anode plate and in the electric field space is uniform;

[0022] 4. It can effectively prevent secondary dust re-entrainment;

[0023] 5. The transformation of the existing electrostatic precipitator is simple. Only the anode plate and the cathode wire need to be transformed. The transformation cost is low, the construction period is short, the transformation adaptability is good, and it has the market potential for wide promotion and application.

[0024] The features and advantages of the utility model will be described in detail through embodiments in conjunction with the drawings.

Description of the Drawings

[0025] Figure 1 is a schematic structural diagram of a large-stiffness inflatable anode plate of the utility model;

[0026] Figure 2 is Figure 1 the sectional view taken along B-B in

[0027] Figure 3 is Figure 2 the enlarged view of I in

[0028] Figure 4 is Figure 2 the enlarged view of II in

[0029] Figure 5 is Figure 1 the sectional view taken along A-A in

[0030] Figure 6 is the schematic diagram of the cooperation between the inflatable anode plate unit and the cathode plate.

[0031] In the figure: 1 - bulging inflatable cavity, 2 - inflatable anode plate unit, 3 - inflation port, 4 - suspension part, 5 - connection part, 6 - suspension hole, 21 - anode plate body, 22 - bulging groove.

Detailed Embodiment

[0032] Referring to Figure 1 , a large-stiffness inflatable anode plate of the utility model includes an inflatable anode plate unit 2 having a number of bulging inflatable cavities 1.

[0033] Referring toFigure 2 , Figure 3 , Figure 4 and Figure 5 , the inflatable anode plate unit 2 includes two anode plate bodies 21 that are stacked and connected together. The anode plate body 21 is an integrally stamped structure with a number of bulging grooves 22. Two bulging grooves 22 corresponding to the openings of the bulging grooves 22 cooperate to form a bulging inflation cavity 1.

[0034] Refer to Figure 4 , the two adjacent bulging inflation cavities 1 up and down are connected, and an inflation port 3 is provided on the lowermost bulging inflation cavity 1.

[0035] Refer to Figure 1 , suspension parts 4 and connection parts 5 are respectively provided at the upper and lower ends of the inflatable anode plate unit 2. A number of suspension holes 6 are provided on the suspension part 4, and the suspension holes 6 are semi-groove-shaped.

[0036] Refer to Figure 2 , the bulging inflation cavity 1 is in an oval shape.

[0037] Working process of the present utility model:

[0038] During the working process of a large-rigidity inflatable anode plate of the present utility model, the bulging inflation cavities 1 arranged vertically in a row form an inflation unit. The two adjacent bulging inflation cavities 1 up and down in the inflation unit are connected, and the two adjacent inflation units before and after are not connected. An inflation port 3 is provided on the lowermost bulging inflation cavity 1, which is convenient for inflation during production. Arranging it on the last bulging inflation cavity 1 is convenient for maintenance and detection.

[0039] Through the double-layer anode plate body 21 and the single-layer bulging inflation cavity 1, the inflatable anode plate unit 2 forms an arch effect, and the rigidity is effectively improved. Therefore, the accumulated thickness of two layers can be much lower than the thickness of one layer. For example, for a conventional anode plate made of a steel plate with a thickness of 1.2 mm - 1.5 mm, the inflatable anode plate can achieve twice the rigidity of the conventional anode plate with a single layer of 0.5 mm, realizing a 1-fold increase in rigidity and a reduction of more than 20% in the steel consumption of the anode plate, greatly reducing the cost of the electrostatic precipitator.

[0040] The semi-groove-shaped suspension holes 6 can avoid local stress concentration when the anode plate is suspended, so that a relatively thin steel plate is not prone to local stress failure.

[0041] The suspension part 4 and the connection part 5 are composed of two stacked anode plate bodies 21, and the anode plate body 21 is an integrally stamped structure. The connection part 5 is designed to be flat to facilitate connection through a clamping plate and bolts.

[0042] The discharge tip of the cathode wire faces the peaks and valleys of the inflated anode plate unit 2. This setting can effectively improve the current density uniformity on the surface of the anode plate and in the electric field channel space, thereby improving the dust removal efficiency, enhancing the power utilization rate of the electrostatic precipitator, and achieving obvious energy-saving effects.

[0043] Since the closer the discharge tip is to the surface of the anode plate, the stronger the discharge; conversely, the farther the discharge tip is from the surface of the anode plate, the smaller the discharge. For a conventional anode plate in a straight plane, only one point or a line on the anode plate is very close to the discharge tip, while other places are far away. Therefore, the discharge uniformity is poor. By arranging the discharge tip of the cathode wire at the peaks and valleys of the inflated anode plate unit 2, the inflated cavity 1 bulges into an elliptical shape, so that the distance from the arc surface of the entire inflated cavity 1 to the discharge tip is similar, thereby achieving uniform current density on the arc surface of the entire inflated cavity 1 and realizing uniform current density in the entire electric field channel space.

[0044] The utility model improves the stiffness of the anode plate of the electrostatic precipitator through the structure of the elliptical corrugated inflated cavity 1, thereby improving the transmission of the rapping acceleration during anode plate dust cleaning to enhance the dust cleaning effect. Through the concave-convex setting and in cooperation with the electrode wire arrangement, the current density uniformity is improved, and the air flow velocity on the surface of the anode plate is reduced to reduce secondary dust generation. The structure of the equipment is simple, suitable for mass production, with low cost, and has wide adaptability to the transformation of existing electrostatic precipitators.

[0045] The above embodiments are illustrative of the utility model, not restrictive of the utility model. Any solution obtained by simply transforming the utility model belongs to the protection scope of the utility model.

Claims

1. A high-rigidity inflatable anode plate, characterized in that: The invention comprises an inflatable anode plate unit (2) having a plurality of bulging inflation chambers (1), wherein the inflatable anode plate unit (2) comprises two anode plate bodies (21) which are superimposed and connected together, wherein the anode plate body (21) is an integrally stamped structure having a plurality of bulging grooves (22), wherein two bulging grooves (22) corresponding to the notches of the bulging grooves (22) cooperate to form the bulging inflation chamber (1).

2. A high-rigidity inflatable anode plate as claimed in claim 1, characterized in that: Two upper and lower adjacent bulging air-filled cavities (1) are connected.

3. A high-rigidity inflatable anode plate as claimed in claim 2, characterized in that: The bottommost bulging inflation cavity (1) is provided with an inflation port (3).

4. A high-rigidity inflatable anode plate as claimed in claim 1, characterized in that: The upper and lower ends of the gas-filled anode plate unit (2) are respectively provided with a hanging portion (4) and a connecting portion (5), and the hanging portion (4) is provided with a plurality of hanging holes (6).

5. A high-rigidity inflatable anode plate as claimed in claim 4, characterized in that: The hanging hole (6) is a semi-groove type.

6. A high-rigidity inflatable anode plate according to any one of claims 1 to 5, characterized in that: The bulging inflation cavity (1) is in an elliptical shape.

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