Mechanical-electrical coupling cathode line with cleaning function
Patent Information
- Application Number
- CN202522265553.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-10-27
- Publication Date
- 2026-09-18
- Estimated Expiration
- 2035-10-27
AI Technical Summary
（2）现有的电除尘器阴极线难以去除自身附着的粉尘
（1）工作时，通过网状收尘体增加阴极的接触面积，且网孔方便气流穿过，以便于使得离子流能够穿过收尘形放电极线，使得带正电荷粉尘更加容易地在电场力、气压推力和离子间作用力的综合作用下附着在网状收尘体上，通过均匀交错设置的内弯折件和外弯折件在集尘面板的中部形成均匀分布的网孔，通过一体成型工艺将集尘面板的中部从平面结构冲切拉伸为3D网孔结构，增加了附着收集的捕捉面积，从而提升了整体的工作效率；
Smart Images
Figure CN224763280U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the technical field of flue gas dust removal equipment, specifically to an electromechanical coupling dust collection cathode wire with cleaning function. Background Technology
[0002] Given the increasingly stringent environmental standards and the unsatisfactory condition of electrostatic precipitators in thermal power plants, the transformation of traditional electrostatic precipitators has become an inevitable trend. Utilizing the internal space of the electric field to upgrade electrostatic precipitators is a cost-effective technical approach.
[0003] Traditional corona wires, also known as cathode wires, are one of the core components of electrostatic precipitators. These cathode wires are connected to a negative high-voltage power supply, and their core function is corona discharge, which ionizes the flue gas to generate free electrons (negative charges) and positive charges (protons). Dust particles carrying negative charges move towards the anode plate under the action of the electric field and are adsorbed by the anode plate.
[0004] Inside an electrostatic precipitator (ESP), while most dust particles carry a negative charge, a small amount still carries a positive charge. This is because when a high voltage is applied to the cathode system to generate corona discharge and charge the dust particles, the charge can be either positive or negative, depending on the collisions between electrons and ions with the dust particles. Under normal circumstances, because the negative ions generated by ionization travel a longer distance towards the anode system (giving them more opportunities to collide with dust particles), there are more negatively charged dust particles, but this does not mean there are no positively charged dust particles. Existing ESPs typically have a poor ability to remove positively charged dust particles, often resulting in a decrease in dust removal efficiency due to the escape of positively charged dust (especially given the increasingly stringent environmental protection requirements). In other words, how to enable ESPs to remove both positively and negatively charged dust, so that the dust removal efficiency meets increasingly stringent requirements, is an urgent problem to be solved. Utility Model Content
[0005] The purpose of this invention is to address the aforementioned problems and shortcomings by providing an electromechanical coupling dust collection cathode wire with cleaning function, thereby improving overall work efficiency.
[0006] The technical problem solved by this utility model is: (1) Existing electrostatic precipitators are ineffective at removing positively charged dust; (2) Existing electrostatic precipitator cathode wires are unable to remove the dust attached to themselves.
[0007] The objective of this utility model can be achieved through the following technical solution: an electromechanical coupling dust-collecting cathode wire with cleaning function, comprising a dust-collecting discharge electrode wire, the dust-collecting discharge electrode wire comprising a mesh dust-collecting body, a semi-circular clamping tube and discharge spikes, the semi-circular clamping tube clamping and installing on both sides of the mesh dust-collecting body, the discharge spikes being evenly distributed at equal intervals on both sides of the mesh dust-collecting body, and the mesh dust-collecting body clamping and fixing each discharge spike correspondingly through the semi-circular clamping tube, the mesh dust-collecting body comprising a dust collection panel, the dust collection panel having a plurality of uniformly distributed mesh holes in an array.
[0008] Preferably, each mesh of the dust collection panel includes an inner bending component and an outer bending component. The inner bending components and outer bending components on the dust collection panel are arranged side by side, and each row of outer bending components and each row of inner bending components are evenly staggered.
[0009] Preferably, the two end sides of the outer bending component are fixedly connected to the two end sides of the inner bending component. The inner bending component and the outer bending component on the dust collection panel are integrated into one piece. The middle part of the inner bending component and the outer bending component is inclined. Both sides of the inner bending component and the outer bending component are inclined.
[0010] Preferably, the lower middle side of the inner and outer bends is further away from the dust collection panel than the upper middle side.
[0011] Preferably, an air guide support pipe is snapped into the inner side of the middle of the semi-circular clamping tube, and a dust blowing plate is installed on the side of the air guide support pipe near the mesh dust collector.
[0012] Preferably, the soot blowing panels are sealed through the side walls of the air guide support pipe and the semi-circular clamping pipe, and each pair of soot blowing panels is symmetrically arranged on both sides of the mesh dust collector.
[0013] Preferably, a dust blowing chute is provided through the interior of the dust blowing panel, the dust blowing chute is inclined and the lower part of the dust blowing chute is close to the mesh dust collector.
[0014] Preferably, the dust-collecting discharge electrode wire is installed in the electrostatic precipitator through the central fixing rod of the cathode frame. Several square tube hangers are installed in parallel on the central fixing rod of the cathode frame in an evenly distributed array. The dust-collecting discharge electrode wire is fixedly installed on the square tube hangers through square tube sleeves installed at both ends of the semi-circular clamping tube.
[0015] The beneficial effects of this utility model are as follows: (1) During operation, the contact area of the cathode is increased by the mesh dust collection body, and the mesh holes facilitate the airflow to pass through, so that the ion flow can pass through the dust collection discharge electrode wire, making it easier for positively charged dust to adhere to the mesh dust collection body under the combined action of electric field force, air pressure thrust and inter-ion force. The uniformly distributed mesh holes are formed in the middle of the dust collection panel by the uniformly interlaced inner bending parts and outer bending parts. The middle of the dust collection panel is punched and stretched from a planar structure to a 3D mesh structure by the one-piece molding process, which increases the capture area of attachment and collection, thereby improving the overall working efficiency. (2) During operation, clean gas is simultaneously delivered to the air guide support pipes on both sides of each mesh dust collector. The clean gas is guided to the dust blowing plate through the air guide support pipe and blown out. Air is blown on each side of the mesh dust collector, and in conjunction with vibration, positively charged dust is collected and discharged during ash discharge, which increases the dust removal capacity of the electrostatic precipitator and avoids missing positively charged dust. It can also blow air through one side of the air guide support pipe and suck air through the other side of the air guide support pipe, thereby avoiding secondary dust generation. Attached Figure Description
[0016] Figure 1 This is a schematic diagram of the overall structure of the dust-collecting discharge electrode wire of this utility model; Figure 2 This is a top view of the overall structure of the dust-collecting discharge electrode wire of this utility model; Figure 3 This is a schematic diagram of the overall structure of the mesh dust collector of this utility model; Figure 4 This is a cross-sectional view of the overall structure of the mesh dust collector of this utility model; Figure 5 This is a cross-sectional view of the overall structure of the soot blowing panel of this utility model; Figure 6 This is a schematic diagram of the overall structure of this utility model.
[0017] Explanation of reference numerals in the attached figures: 100. Dust-collecting discharge electrode wire; 101. Mesh dust collector; 102. Semi-circular clamping tube; 103. Discharge barb; 104. Air guide support tube; 105. Soot blowing panel; 106. Square tube sleeve; 201. Dust collection panel; 202. Outer bending component; 203. Inner bending component; 301. Soot blowing chute; 200. Cathode frame center fixing rod; 300. Square tube hanger. Detailed Implementation
[0018] The specific embodiments of this utility model are described in detail below, but it should be understood that the protection scope of this utility model is not limited to the specific embodiments.
[0019] Please see Figures 1-3As shown: An electromechanical coupling dust-collecting cathode wire with cleaning function includes a dust-collecting discharge electrode wire 100. The dust-collecting discharge electrode wire 100 includes a mesh dust-collecting body 101, a semi-circular clamping tube 102, and discharge spikes 103. The semi-circular clamping tube 102 is clamped and installed on both sides of the mesh dust-collecting body 101. The discharge spikes 103 are evenly distributed on both sides of the mesh dust-collecting body 101, and the mesh dust-collecting body 101 clamps and fixes each discharge spike 103 accordingly through the semi-circular clamping tube 102. The mesh dust-collecting body 101 includes a dust collection panel 201, on which a plurality of mesh holes are evenly distributed in an array. In this embodiment, the dust-collecting discharge electrode wire 100 serves as the cathode of the electrostatic precipitator. Discharge is generated through the tip of the discharge barb 103, which, in conjunction with the anode structure of the electrostatic precipitator, forms an electric field. This ionizes the air surrounding the dust-collecting discharge electrode wire 100, generating negative ions. Dust particles in the airflow passing through the electric field combine with these negative ions, forming negatively charged dust particles. The electric field exerts an electric force on these negatively charged dust particles, pushing them towards the anode structure. By staggering the anode structure and the dust-collecting discharge electrode wire 100, dust particles are collected and adhered to both sides of the anode structure. Simultaneously, the mesh dust collector 101 increases the cathode's contact area, and the mesh openings facilitate airflow passage, allowing the ion flow to pass through the dust-collecting discharge electrode wire 100. This makes it easier for positively charged dust particles to adhere to the mesh dust collector 101 under the combined action of electric field force, air pressure thrust, and inter-ion forces.
[0020] Please see Figure 3 and Figure 4 As shown, each mesh of the dust collection panel 201 includes an inner bending member 203 and an outer bending member 202. The inner bending members 203 and outer bending members 202 on the dust collection panel 201 are arranged side by side. Each row of outer bending members 202 and each row of inner bending members 203 are evenly staggered. The two ends of the outer bending members 202 are fixedly connected to the two ends of the inner bending members 203. The inner bending members 203 and outer bending members 202 on the dust collection panel 201 are integrated. The middle part of the inner bending members 203 and outer bending members 202 is inclined. Both sides of the inner bending members 203 and outer bending members 202 are inclined. In this embodiment, the lower middle part of the inner bending members 203 and outer bending members 202 is further away from the dust collection panel 201 than the upper middle part. In this embodiment, when the inner bending member 203 and the outer bending member 202 are evenly and alternately arranged, a uniformly distributed mesh is formed in the middle of the dust collection panel 201. The middle of the dust collection panel 201 is punched and stretched from a planar structure to a 3D mesh structure through an integral molding process, which increases the capture area for attachment and collection, thereby improving the overall work efficiency. The inclined surface structure of the inner bending member 203 and the outer bending member 202 increases the distance between adjacent bending members, preventing dust falling from the upper part from re-attaching to the inner bending member 203 and the outer bending member 202 below. The side inclination angle of the inner bending member 203 and the outer bending member 202 allows the dust collection panel 201 to adapt to dust-laden airflows with various humidity levels. When removing dust from dust-laden airflows with high humidity, the inclined surface allows the attached dust to fall off fully. Furthermore, the bottom edge of the upper inclined surface is offset from the top edge of the lower inclined surface, preventing the fallen dust clumps from re-attaching to the lower inclined surface. This ensures that when the dust collection electrode wire 100 is vibrated, the attached and collected dust can fall off fully without leaving any residue.
[0021] Please see Figure 2 As shown, a gas guide support tube 104 is snapped into the inner side of the middle of the semi-circular clamping tube 102. Each gas guide support tube 104 is connected to an external gas supply pipe and can be opened and closed independently. Each gas supply pipe and its connection are kept insulated. A soot blowing plate 105 is installed on the side of the gas guide support tube 104 near the mesh dust collector 101. The soot blowing plate 105 seals through the side wall of the gas guide support tube 104 and the semi-circular clamping tube 102. Each pair of soot blowing plates 105 is symmetrically arranged on both sides of the mesh dust collector 101. In this embodiment, clean gas is simultaneously supplied to the air guide support pipes 104 on both sides of each mesh dust collector 101. The clean gas is guided by the air guide support pipes 104 to the soot blowing plate 105 and blown out, blowing air on each side of the mesh dust collector 101. Combined with vibration, positively charged dust is collected and discharged during ash discharge, increasing the dust removal capacity of the electrostatic precipitator and avoiding the omission of positively charged dust.
[0022] Please see Figure 5 As shown, a blowing chute 301 is provided through the interior of the blowing panel 105. In this embodiment, the blowing chute 301 is inclined and the lower part of the blowing chute 301 is close to the mesh dust collector 101. Other angles can also be set, which will not be described in detail in this embodiment. In this embodiment, the inclined blowing chute 301 can not only blow away the dust on the mesh dust collector 101, but also form a downward airflow to guide the dust to fall into the dust hopper. It can also blow air through the air guide support pipe 104 on one side and suck air through the air guide support pipe 104 on the other side, thereby avoiding secondary dust generation.
[0023] Please see Figure 6 As shown, the dust-collecting discharge electrode wire 100 is installed in the electrostatic precipitator through the cathode frame center fixing rod 200. Several square tube hanging rods 300 are evenly distributed in an array and installed in parallel on the cathode frame center fixing rod 200. The dust-collecting discharge electrode wire 100 is fixedly installed on the square tube hanging rods 300 through the square tube sleeves 106 installed at both ends of the semi-circular clamping tube 102. In this embodiment, the dust-collecting discharge electrode wires 100 are suspended inside the electrostatic precipitator by the cathode frame central fixing rod 200 and the square tube suspension rod 300. A cathode rapper is also provided to vibrate each dust-collecting discharge electrode wire 100 to remove the attached dust. The square tube suspension rods 300 are arranged in an array so that each dust-collecting discharge electrode wire 100 is evenly arranged in an array. The frame structure formed by the cathode frame central fixing rod 200 and the square tube suspension rod 300 provides stable support for the dust-collecting discharge electrode wires 100, preventing the dust-collecting discharge electrode wires 100 from separating, loosening, falling, or causing accidents, thus ensuring long-term and orderly dust removal work.
[0024] In summary, by increasing the contact area of the cathode through the mesh dust collector 101 and allowing airflow to pass through the mesh, the ion flow can pass through the dust-collecting discharge electrode wire 100. This makes it easier for positively charged dust to adhere to the mesh dust collector 101 under the combined action of electric field force, air pressure thrust, and inter-ion force. The uniformly distributed mesh is formed in the middle of the dust collection panel 201 by the evenly staggered inner bending member 203 and outer bending member 202. The middle of the dust collection panel 201 is punched and stretched from a planar structure to a 3D mesh structure through an integral molding process, which increases the capture area for attachment and collection, thereby improving the overall working efficiency. Clean gas is simultaneously supplied to the air guide support pipes 104 on both sides of each mesh dust collector 101. The clean gas is guided by the air guide support pipes 104 to the soot blowing panel 105 and blown out, blowing air on each side of the mesh dust collector 101. Combined with vibration, positively charged dust is collected and discharged during ash discharge, increasing the dust removal capacity of the electrostatic precipitator and preventing the omission of positively charged dust. Air can also be blown from one side of the air guide support pipe 104 and drawn from the other side, thereby avoiding secondary dust generation.
[0025] The above-disclosed embodiments are only a few specific examples of the present utility model. However, the embodiments of the present utility model are not limited thereto. Any changes that can be conceived by those skilled in the art should fall within the protection scope of the present utility model.
Claims
1. An electromechanical coupling dust collection cathode wire with cleaning function, characterized in that, The device includes a dust-collecting discharge electrode wire (100), which includes a mesh dust collector (101), a semi-circular clamping tube (102), and discharge spikes (103). The semi-circular clamping tube (102) is clamped and installed on both sides of the mesh dust collector (101). The discharge spikes (103) are evenly distributed on both sides of the mesh dust collector (101), and the mesh dust collector (101) clamps and fixes each discharge spike (103) correspondingly through the semi-circular clamping tube (102). The mesh dust collector (101) includes a dust collection panel (201), on which a plurality of mesh holes are evenly distributed in an array.
2. The electromechanical coupling dust collection cathode wire with cleaning function as described in claim 1, characterized in that, Each mesh of the dust collection panel (201) includes an inner bending member (203) and an outer bending member (202). The inner bending members (203) and the outer bending members (202) on the dust collection panel (201) are arranged side by side, and each row of outer bending members (202) and each row of inner bending members (203) are evenly staggered.
3. The electromechanical coupling dust collection cathode wire with cleaning function as described in claim 2, characterized in that, The two ends of the outer bending member (202) are fixedly connected to the two ends of the inner bending member (203). The inner bending member (203) and the outer bending member (202) on the dust collection panel (201) are integrated. The middle part of the inner bending member (203) and the outer bending member (202) is inclined. Both sides of the inner bending member (203) and the outer bending member (202) are inclined.
4. The electromechanical coupling dust collection cathode wire with cleaning function as described in claim 3, characterized in that, The lower middle side of the inner bending member (203) and the outer bending member (202) are further away from the dust collection panel (201) than the upper middle side.
5. The electromechanical coupling dust collection cathode wire with cleaning function as described in claim 1, characterized in that, The middle inner side of the semi-circular clamping tube (102) is fitted with an air guide support tube (104), and a dust blowing plate (105) is installed on the side of the air guide support tube (104) near the mesh dust collector (101).
6. The electromechanical coupling dust collection cathode wire with cleaning function as described in claim 5, characterized in that, The soot blowing panel (105) seals the sidewalls of the air guide support pipe (104) and the semi-circular clamping pipe (102), and each pair of soot blowing panels (105) is symmetrically arranged on both sides of the mesh dust collector (101).
7. The electromechanical coupling dust collection cathode wire with cleaning function as described in claim 5, characterized in that, The blowing panel (105) has a blowing chute (301) that runs through its interior. The blowing chute (301) is inclined and its lower part is close to the mesh dust collector (101).
8. The electromechanical coupling dust collection cathode wire with cleaning function as described in claim 1, characterized in that, The dust-collecting discharge electrode wire (100) is installed in the electrostatic precipitator through the cathode frame center fixing rod (200). Several square tube hangers (300) are installed in parallel on the cathode frame center fixing rod (200) in an array. The dust-collecting discharge electrode wire (100) is fixedly installed on the square tube hanger (300) through square tube sleeves (106) installed at both ends of the semi-circular clamping tube (102).