Wet-type electric dust collector cathode wire

Abstract

The utility model belongs to the technical field of cathode wire, especially a wet type electric dust collector cathode wire, including middle rigid line and both sides rigid line, the middle rigid line surface is connected with spherical discharge head fixedly, the number of spherical discharge head is multiple groups, and is arrayed between multiple groups spherical discharge head, the both sides of the middle rigid line surface are equipped with the clamping slot, both ends in the middle rigid line all are connected with the plug -in column. Through modularization sectional type design, this cathode wire is divided into three independent parts, can be convenient and fast to complete installation, replaces more conveniently, can carry out the targeted replacement part simultaneously, shortens the time of replacement, sectional type modularization design can save more space, when the space is smaller, can also replace, the curvature radius of spherical discharge head is bigger, the whole is more uniform, spherical electric field distribution is even, avoids the rise of corona voltage because of corrosion, keeps energy consumption stable, reduces the potential safety hazard.

Description

Technical Field

[0001] This utility model belongs to the field of cathode wire technology, specifically relating to a cathode wire for a wet electrostatic precipitator. Background Technology

[0002] Wet electrostatic precipitators (ESPs), as end-of-pipe purification equipment, are increasingly being used in ultra-low emission retrofitting of coal-fired power plants. The cathode wire, as a core component of the ESP, not only affects its purification performance but also its service life and operating costs. Common cathode types used in wet ESPs include fishbone needle type and serrated type. Fishbone needle type ESPs offer good discharge performance but have a more complex manufacturing process, are prone to damage during installation and operation, and have poor reliability. Serrated type ESPs are less prone to damage but generally have poorer discharge performance.

[0003] The existing cathode wires are long and inconvenient to replace. In some cases, they cannot even be replaced when there is limited space. This limits their use. The needle-like tips on the surface of the cathode wires have a small radius of curvature and are easily corroded, leading to an increase in corona voltage, increased energy consumption, and higher safety hazards. Utility Model Content

[0004] To address the problems mentioned in the background art, this utility model provides a cathode wire for a wet electrostatic precipitator. This solves the problems of the cathode wire being too long to replace easily, and even impossible to replace in some situations where there is limited space, which limits its use. Furthermore, the small radius of curvature of the needle-like tips on the cathode wire surface makes it susceptible to corrosion, leading to increased corona voltage, increased energy consumption, and higher safety hazards.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a cathode wire for a wet electrostatic precipitator, comprising a central rigid wire and two side rigid wires. A spherical discharge head is fixedly connected to the surface of the central rigid wire. The number of spherical discharge heads is multiple sets, and the multiple sets of spherical discharge heads are arranged in an array. Slots are provided on both sides of the surface of the central rigid wire. Insertion posts are connected to both ends inside the central rigid wire. Both ends of the central rigid wire are movably connected to one end of the two side rigid wires.

[0006] Preferably, a flattening plate is fixedly connected to one side of the rigid lines on both sides, and the flattening plate has a through hole inside.

[0007] Preferably, a serrated discharge head is fixedly connected to the surface of the rigid lines on both sides, and there are multiple sets of serrated discharge heads, with the positions of the multiple sets of serrated discharge heads distributed in an array.

[0008] Preferably, one end of the rigid wires on both sides is provided with a socket, and the inner surface of the socket is movably connected to the surface of the plug.

[0009] Preferably, both sides of the rigid wire surface are fixedly connected with buckles, and the buckles engage with the slots.

[0010] Compared with the prior art, the beneficial effects of this utility model are:

[0011] Through modular segmented design, the cathode wire is divided into three independent parts. During replacement, simply insert the rigid wires on both sides into the middle rigid wire and twist it 90 degrees to complete the snap-fit. This allows for convenient and quick installation and replacement, while also enabling targeted replacement of components, shortening the replacement time. The segmented modular design saves more space, allowing for replacement even in limited spaces, making the cathode wire adaptable to more diverse environments. Replacing the needle-piercing tip with a spherical discharge head provides a larger radius of curvature and more uniform overall performance. Unlike needle-piercing tips, which are prone to corrosion due to varying radii of curvature, the spherical electric field is uniformly distributed, preventing corona voltage rise caused by corrosion, maintaining stable energy consumption, and reducing safety hazards. Attached Figure Description

[0012] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings:

[0013] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0014] Figure 2 This is a structural disassembly diagram of the present invention;

[0015] Figure 3 This is a schematic diagram of the rigid line in the middle of this utility model;

[0016] Figure 4 This is a schematic diagram of the rigid lines on both sides of this utility model.

[0017] In the diagram: 1. Rigid line in the middle; 2. Spherical discharge head; 3. Rigid lines on both sides; 4. Serrated discharge head; 5. Through hole; 6. Insertion post; 7. Flattened plate; 8. Slot; 9. Insertion hole; 10. Buckle. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.

[0019] Please see Figure 1-4 The present invention provides the following technical solution: a cathode wire of a wet electrostatic precipitator, comprising a central rigid wire 1 and two side rigid wires 3. A spherical discharge head 2 is fixedly connected to the surface of the central rigid wire 1. The number of spherical discharge heads 2 is multiple, and the multiple sets of spherical discharge heads 2 are arranged in an array. A slot 8 is provided on both sides of the surface of the central rigid wire 1. Both ends of the central rigid wire 1 are connected to a plug post 6. Both ends of the central rigid wire 1 are movably connected to one end of the two side rigid wires 3.

[0020] In this embodiment, a spherical discharge head 2 and two serrated discharge heads 4 are used in combination. The spherical discharge head 2 provides a stable and uniform electric field and reduces the corona initiation voltage, while the serrated discharge head 4 provides a sharp discharge point, generating a strong corona current and a dense ion wind. This hybrid design combines the advantages of the two discharge methods, significantly improving the overall charging efficiency and dust collection capability.

[0021] In this embodiment, multiple sets of spherical discharge heads 2 are arrayed on the central rigid line 1, and multiple sets of sawtooth discharge heads 4 are also arrayed on the two side rigid lines 3. This regular and uniform layout ensures the uniformity of electric field strength and corona discharge along the entire length of the cathode line, avoids excessively strong or weak local discharge, and is conducive to improving the stability of dust removal efficiency.

[0022] In this embodiment, both the central rigid wire 1 and the two side rigid wires 3 are made of rigid wire, which ensures the overall mechanical strength and rigidity of the cathode wire. Under the complex airflow and possible flushing water impact inside the wet dust collector, it is not easy to deform, break or swing significantly, ensuring the stability of the electrode spacing and reliable operation.

[0023] In this embodiment, the insertion post 6 is inserted into the insertion hole 9, and the buckle 10 is engaged with the slot 8, which realizes the quick and reliable connection and disassembly of the central rigid line 1 and the two side rigid lines 3. The segmented modular design greatly facilitates transportation, on-site installation and subsequent maintenance and replacement.

[0024] In this embodiment, the connection method combines plug-in and snap-fit ​​slots to form a mechanical interlocking structure. This connection method is more resistant to vibration and impact than simple threads or welding. In the common environment of wet electrostatic precipitators, such as rapping or water flushing, it can effectively prevent the connection from loosening or falling off.

[0025] The working principle and usage process of this utility model are as follows: After the utility model is installed, align the through holes of the rigid wires 3 on both sides with the plug posts 6 at both ends of the rigid wire 1 in the middle and insert them. Then, twist the rigid wires 3 on both sides to move the buckle 10 along the slot 8. When the buckle 10 moves to the end of the slot 8, the rigid wires 3 on both sides engage with the rigid wire 1 in the middle, thus completing the assembly. Finally, connect the flattened plate 7 to the cathode frame through the through hole 5 with bolts, and connect the flattened plate 7 at the other end to the bottom cathode fixing frame of the wet electrostatic precipitator through the through hole 5 with bolts, thereby completing the installation of the cathode wire in the wet electrostatic precipitator. All electrical equipment in this device is powered by an external power supply, and all motors or electric push rods in this article are controlled by a PLC control system.

[0026] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A cathode wire for a wet electrostatic precipitator, comprising a central rigid wire (1) and two side rigid wires (3), characterized in that: A spherical discharge head (2) is fixedly connected to the surface of the central rigid line (1). There are multiple sets of spherical discharge heads (2), and the multiple sets of spherical discharge heads (2) are arranged in an array. The two sides of the surface of the central rigid line (1) are provided with slots (8). Both ends of the interior of the central rigid line (1) are connected with plug posts (6). Both ends of the central rigid line (1) are movably connected to one end of the two side rigid lines (3).

2. The cathode wire of a wet electrostatic precipitator according to claim 1, characterized in that: A flattening plate (7) is fixedly connected to one side of the surface of the two rigid lines (3), and a through hole (5) is provided inside the flattening plate (7).

3. The cathode wire of a wet electrostatic precipitator according to claim 1, characterized in that: The rigid lines (3) on both sides are fixedly connected to sawtooth discharge heads (4). There are multiple sets of sawtooth discharge heads (4), and the positions of the multiple sets of sawtooth discharge heads (4) are distributed in an array.

4. The cathode wire of a wet electrostatic precipitator according to claim 1, characterized in that: One end of the rigid wires (3) on both sides is provided with a socket (9), and the inner surface of the socket (9) is movably connected to the surface of the plug (6).

5. The cathode wire of a wet electrostatic precipitator according to claim 1, characterized in that: Both sides of the rigid lines (3) on both sides are fixedly connected with buckles (10), and the buckles (10) are engaged with the slots (8).

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