A high discharge density cathode wire

Abstract

The utility model discloses a high cathode wire of discharge density, including cathode wire main part, the cathode wire main part outer wall is cylindrical, the both ends of cathode wire main part are fixedly connected with the joint respectively, the cathode wire main part outer wall is equipped with spiral guide ash groove, every group recess is fixedly connected with the protruding in, the protruding outer wall is semicircular and sets up, the thorn every side outer wall equidistance is equipped with multiple groups straight slot, and multiple groups straight slot gradually decrease from thorn bottom surface to the diameter of tip point in proper order. The utility model discloses through three prism pyramidal thorn, side edge recess, recess protruding and side wall straight slot mouth etc. parts, form multidimensional discharge unit and increase discharge point quantity greatly, and through optimizing groove body spacing and depth parameter makes discharge edge even distribution simultaneously, effectively solve the problem that the discharge density is deficient and the electric field blind area of traditional thorn discharge tip end limited, promote the uniformity and high efficiency of corona discharge.

Description

Technical Field

[0001] This utility model relates to the field of cathode wire technology, specifically a high discharge density cathode wire. Background Technology

[0002] The cathode wire is a core component of environmental protection equipment such as electrostatic precipitators and electrostatic demisting devices. Its main function is to establish a strong electric field through high-voltage corona discharge, charging particulate matter such as dust and droplets flowing through the electric field, which is then captured by the anode plate, ultimately achieving pollutant purification. With the continuous improvement of industrial waste gas treatment requirements, higher standards are being placed on the discharge density, electric field uniformity, anti-dust accumulation ability, and structural durability of the cathode wire. The performance of the cathode wire directly determines the purification efficiency, operational stability, and service life of the environmental protection equipment.

[0003] Traditional cathode wires often employ simple conical or pyramidal barbs, resulting in a limited number of discharge tips and insufficient discharge density. This leads to blind spots in the electric field coverage, affecting the particulate charging efficiency. Furthermore, traditional structures lack optimization for dust accumulation, allowing dust to adhere to the barb surface and the outer wall of the cathode wire body. Long-term accumulation can obstruct the discharge tips, disrupting electric field stability and requiring frequent shutdowns for cleaning, increasing maintenance costs. Additionally, some cathode wires lack a proper transition structure at the connection between the barbs and the main body, easily causing stress concentration and localized overheating during discharge. This leads to barb root ablation and breakage, shortening the cathode wire's lifespan. Therefore, this invention proposes a high-discharge-density cathode wire to solve these problems. Utility Model Content

[0004] (a) Technical problems to be solved To address the shortcomings of existing technologies, such as low discharge density, blind spots in the electric field, excessive dust accumulation, and easy structural damage, this invention incorporates triangular pyramidal barbs, side grooves, internal protrusions, straight sidewall openings, spiral dust guiding channels, and arc transition sections. This achieves high discharge density, uniform electric field, and efficient dust guiding, avoiding problems such as dust accumulation obstructing the electric field, localized overheating damage, and excessively high maintenance costs.

[0005] (II) Technical Solution To achieve the above objectives, this utility model provides the following technical solution: a high discharge density cathode wire, comprising a cathode wire body, the outer wall of the cathode wire body being cylindrical, connectors fixedly connected to both ends of the cathode wire body, a spiral dust guiding groove formed on the outer wall of the cathode wire body, multiple sets of barbs arranged circumferentially on the outer wall of the cathode wire body, the outer wall of the barbs being triangular pyramidal, multiple sets of grooves equally spaced on the three sets of side edges of the barbs, the bottom of each set of grooves being arc-shaped, a protrusion fixedly connected to each set of grooves, the outer wall of the protrusion being semi-circular, and multiple sets of straight slots equally spaced on each side of the outer wall of the barb, the diameter of the multiple sets of straight slots decreasing sequentially from the bottom surface to the tip of the barb.

[0006] Preferably, the spacing between the straight grooves is 0.8-1.2 mm, and the depth of the straight grooves is 1 / 3-1 / 2 of the thickness of the barbed sidewall.

[0007] Preferably, the grooves are spaced 1.5-2 mm apart along the side edge of the barb, and the width of the grooves decreases linearly from the bottom surface of the barb to the tip.

[0008] Preferably, the protrusion is located in the middle of the groove, and the top of the protrusion is flush with the edge of the groove opening.

[0009] Preferably, the connection between the root of the barb and the cathode wire body is provided with an arc transition portion, and the radius of curvature of the arc transition portion is 0.3-0.5mm.

[0010] (III) Beneficial Effects Compared with the prior art, this utility model provides a high discharge density cathode wire, which has the following beneficial effects: 1. This utility model forms a multi-dimensional discharge unit and greatly increases the number of discharge points by using components such as triangular pyramidal spikes, side grooves, groove protrusions, and straight grooves on the side walls. At the same time, by optimizing the groove spacing and depth parameters, the discharge edge is evenly distributed, which effectively solves the problems of insufficient discharge density and electric field blind zone caused by the limited tip of traditional spike discharge, and improves the uniformity and efficiency of corona discharge.

[0011] 2. This utility model uses components such as a spiral ash guide groove, a groove with gradually changing groove width, a straight groove opening, and a circular arc transition part to achieve coordinated guidance and rapid sliding of accumulated ash, avoiding ash accumulation from blocking the discharge tip. At the same time, it eliminates stress concentration at the connection between the barbs and the cathode wire body, preventing ablation and breakage caused by local overheating. It effectively improves the defects of traditional cathode wires, such as easy destruction of electric field stability, high maintenance costs, and short service life. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the structure of a high discharge density cathode wire proposed in this utility model; Figure 2 for Figure 1 Schematic diagram of the structure at the central thorn; In the diagram: 1. Cathode wire body; 2. Spiral dust guide groove; 3. Connector; 4. Barb; 5. Straight groove opening; 6. Groove; 7. Protrusion. Detailed Implementation

[0013] In this utility model, unless otherwise stated, the orientations used, such as "up" and "down", usually refer to the direction shown in the accompanying drawings, or to the vertical, perpendicular, or gravitational direction; similarly, for ease of understanding and description, "left" and "right" usually refer to the left and right shown in the accompanying drawings; "inner" and "outer" refer to the inner and outer contours of each component itself, but the above directional terms are not used to limit this utility model.

[0014] This invention provides a technical solution for a high discharge density cathode wire: Please see Figure 1-2 A high discharge density cathode wire includes a cathode wire body 1, the outer wall of the cathode wire body 1 is cylindrical, and connectors 3 are fixedly connected to both ends of the cathode wire body 1. A spiral dust guide groove 2 is opened on the outer wall of the cathode wire body 1. Multiple sets of barbs 4 are arranged around the outer wall of the cathode wire body 1. The outer wall of the barbs 4 is arranged in a triangular pyramid shape. Multiple sets of grooves 6 are equally spaced on the three sets of side edges of the barbs 4. The bottom of each set of grooves 6 is arc-shaped. A protrusion 7 is fixedly connected in each set of grooves 6. The outer wall of the protrusion 7 is semi-circular. Multiple sets of straight slots 5 are equally spaced on each side of the outer wall of the barb 4. The diameter of the multiple sets of straight slots 5 decreases sequentially from the bottom surface to the tip of the barb 4. Furthermore, the combination structure of the triangular pyramidal spike 4 with the side groove 6 and the groove protrusion 7 can form a multi-dimensional discharge point on the basis of the traditional single tip, which solves the problem of insufficient discharge density caused by the limited discharge tip of the traditional spike in the background technology. At the same time, the straight groove 5 and the spiral dust guide groove 2 form a synergistic dust guiding effect, reducing the accumulation of dust on the surface of the spike 4 and the cathode wire body 1, and avoiding the destruction of electric field stability. The fixed connection design of the connector 3 ensures the reliability of high voltage transmission and improves the stability of equipment operation.

[0015] The spacing of the straight grooves 5 is 0.8-1.2mm, and the depth of the straight grooves 5 is 1 / 3-1 / 2 of the thickness of the sidewall of the barbs 4; Furthermore, the dimensional parameters are set so that the straight groove 5 forms a uniformly distributed discharge edge on the side wall of the barb 4. This not only strengthens the electric field intensity by increasing the number of discharge points to solve the problem of electric field blind zone in the background technology, but also avoids the decrease in mechanical strength of the barb 4 due to the groove being too deep or too dense. At the same time, the reasonable groove depth can guide the attached dust to slide down along the groove opening, reduce the probability of dust accumulation blocking the discharge tip, and reduce the frequency of downtime cleaning and maintenance costs.

[0016] The spacing between the grooves 6 along the side edges of the spikes 4 is 1.5-2mm, and the width of the grooves 6 decreases linearly from the bottom surface to the tip of the spikes 4. Furthermore, the 1.5-2mm spacing ensures that the groove 6 forms a continuous and non-interfering discharge unit on the side edge, solving the problem of dispersed discharge points in traditional structures. The design of the groove width decreasing linearly with the contraction of the tip of the barb 4 can adapt to the electric field distribution characteristics of the triangular pyramid tip, avoiding ablation caused by excessive concentration of local electric field. At the same time, the combination of the arc-shaped groove bottom and the gradually changing groove width can guide the accumulated dust to slide down to the root of the barb 4, meeting the need for improved dust accumulation performance in the background technology.

[0017] The protrusion 7 is located in the middle of the groove 6, and the top of the protrusion 7 is flush with the edge of the groove 6. Furthermore, the central positioning of the protrusion 7 creates a symmetrical electric field superposition area within the groove 6. Combined with the semi-circular contour, this enhances the local electric field strength, solving the problem of insufficient discharge density in the prior art. The design of the top being flush with the groove 6 prevents the protrusion 7 from becoming a protruding point for dust accumulation, while ensuring that the dust guiding channel of the groove 6 is not blocked, achieving the dual effects of enhanced discharge and dust control. The root of the barb 4 is provided with an arc transition section at the connection between it and the cathode wire body 1. The radius of curvature of the arc transition section is 0.3-0.5mm. Furthermore, the circular arc transition section with the radius of curvature can effectively eliminate stress concentration at the connection between the barbs 4 and the cathode wire body 1, solving the problem of barb root ablation and breakage caused by local overheating in the prior art. At the same time, the smooth transition structure reduces the accumulation of ash at the connection, ensuring the stability of current transmission and extending the overall service life of the cathode wire.

[0018] In practical use, the working principle of this utility model is as follows: When the high discharge density cathode wire is put into use, the cathode wire body 1 is connected to the high voltage power supply system through the connectors 3 at both ends. The high voltage is quickly conducted through the cathode wire body 1 to multiple sets of circumferentially distributed barbs 4, providing a stable power foundation for corona discharge.

[0019] The spike 4 adopts a triangular pyramid structure. The grooves 6 on its three sets of side edges and the semi-circular protrusions 7 in the grooves form a multi-dimensional discharge unit. Combined with the straight grooves 5 on the side wall of the spike 4, the number of discharge points is greatly increased on the basis of traditional single-point discharge, effectively improving the discharge density and solving the problem of insufficient discharge efficiency caused by the limited discharge tip of traditional spikes in the background technology.

[0020] The straight slots 5 are set at a spacing of 0.8-1.2mm and a depth of 1 / 3-1 / 2 of the sidewall thickness of the barbs 4, forming a uniformly distributed discharge edge on the sidewall, further expanding the electric field coverage range, eliminating the electric field blind zone present in traditional structures, and at the same time, the reasonable design of the slot size avoids the decrease in the mechanical strength of the barbs 4, and can guide the dust attached to the sidewall to slide down along the slot.

[0021] The grooves 6 are opened at intervals of 1.5-2mm along the side edges of the barbs 4. The groove width decreases linearly from the bottom surface of the barb 4 to the tip, which is adapted to the electric field distribution characteristics of the tip of the triangular pyramid and avoids ablation caused by excessive concentration of local electric field. The combination of the arc-shaped groove bottom and the gradually changing groove width can guide the accumulated ash to move towards the root of the barb 4. Together with the spiral ash guiding groove 2 on the outer wall of the cathode wire body 1, a synergistic ash guiding channel is formed to reduce the accumulation of dust on the surface of the barbs 4 and the cathode wire body 1, avoid damage to the electric field stability, and reduce the frequency of downtime cleaning and maintenance costs.

[0022] The protrusion 7 is located in the middle of the groove 6 and its top is flush with the edge of the groove. It forms a symmetrical electric field superposition area in the groove 6, which further enhances the local electric field intensity. At the same time, it prevents the protrusion 7 from becoming a protruding point for dust accumulation, ensuring that the dust guiding channel of the groove 6 is unobstructed, and achieving the dual effect of discharge enhancement and dust accumulation control.

[0023] The arc transition section at the connection between the root of the barb 4 and the main body of the cathode wire 1 is designed with a curvature radius of 0.3-0.5mm. This effectively eliminates stress concentration at the connection point, avoids the problem of barb 4 root burning and breakage caused by local overheating during discharge, ensures the stability of current transmission, and extends the overall service life of the cathode wire.

[0024] In summary, through the multi-structure collaborative design of the spike 4 and the functional optimization of the cathode wire body 1, this cathode wire improves the discharge density and electric field uniformity while achieving efficient ash accumulation guidance and structural stability protection. It effectively solves the core technical defects of traditional cathode wires and improves the purification efficiency, operational stability and service life of environmental protection equipment.

[0025] The above are merely specific embodiments of this utility model, but the technical features of this utility model are not limited thereto. Any simple changes, equivalent substitutions, or modifications made based on this utility model to solve essentially the same technical problems and achieve essentially the same technical effects are all covered within the protection scope of this utility model.

Claims

1. A high discharge density cathode wire, comprising a cathode wire body (1), characterized in that: The outer wall of the cathode wire body (1) is cylindrical. The two ends of the cathode wire body (1) are respectively fixedly connected to the connectors (3). The outer wall of the cathode wire body (1) is provided with a spiral dust guide groove (2). The outer circumference of the outer wall of the cathode wire body (1) is provided with multiple sets of barbs (4). The outer wall of the barbs (4) is set in a triangular pyramid shape. Multiple sets of grooves (6) are equally spaced on the three sets of side edges of the barbs (4). The bottom of each set of grooves (6) is arc-shaped. A protrusion (7) is fixedly connected in each set of grooves (6). The outer wall of the protrusion (7) is semi-circular. Multiple sets of straight slots (5) are equally spaced on each side of the outer wall of the barb (4). The diameter of the multiple sets of straight slots (5) decreases sequentially from the bottom surface to the tip of the barb (4).

2. The high discharge density cathode wire according to claim 1, characterized in that: The spacing of the straight grooves (5) is 0.8-1.2 mm, and the depth of the straight grooves (5) is 1 / 3-1 / 2 of the thickness of the sidewall of the barbs (4).

3. The high discharge density cathode wire according to claim 2, characterized in that: The groove (6) is spaced 1.5-2 mm apart along the side edge of the thorn (4), and the groove width (6) decreases linearly from the bottom surface of the thorn (4) to the tip.

4. The high discharge density cathode wire according to claim 3, characterized in that: The protrusion (7) is located in the middle of the groove (6), and the top of the protrusion (7) is flush with the edge of the groove (6).

5. A high discharge density cathode wire according to claim 4, characterized in that: The root of the barb (4) is provided with a circular arc transition part at the connection between it and the cathode wire body (1), and the radius of curvature of the circular arc transition part is 0.3-0.5mm.

Images