Magnetic suspension insulation box of wet-type electric dust remover

Abstract

The utility model relates to a magnetic suspension insulation box of a wet-type electric dust remover, which comprises a cathode suspension block and a magnetic suspension bearing block which are positioned in an insulation box shell, and the cathode suspension block is positioned in a space above the magnetic suspension bearing block and is connected with a cathode suspension rod which is vertically arranged; the magnetic suspension bearing block is internally provided with an open hole for allowing the cathode suspender to pass through; the bottom of the cathode suspender penetrates through an opening of the magnetic suspension bearing block and is connected with a cathode wire in the wet-type electric dust remover; the contact surface of the cathode suspension block and the magnetic suspension bearing block is provided with a magnetic suspension assembly, and the magnetic suspension assembly generates mutually repulsive magnetic fields when electrified, so that the cathode suspension block is far away from the surface of the magnetic suspension bearing block by a certain distance due to magnetic force, and magnetic suspension is realized. The insulation performance of the cathode can be greatly improved, even if wet flue gas rises to cause condensation and attachment, discharge cannot be caused due to the fact that the cathode wire is in a suspended state, and traditional electric heating and dry air sealing do not need to be used.

Description

Technical Field

[0001] This utility model relates to the field of electrostatic precipitator technology, specifically to a magnetic levitation insulation box for a wet electrostatic precipitator. Background Technology

[0002] The statements in this section are merely background information related to this utility model and do not necessarily constitute prior art.

[0003] Wet electrostatic precipitators (WESPs) are commonly used dust removal equipment in flue gas desulfurization, denitrification, and dust removal processes. During operation, the dust and sludge accumulated on the anode are periodically washed away. In this process, hygroscopic impurities such as dust adhere to the area near the insulator at the insulator opening of the insulation box, causing a discharge short circuit on the cathode of the insulator.

[0004] To address the aforementioned issues, most existing top-mounted insulation boxes in wet electrostatic precipitators are equipped with sealing air systems. This involves using dry air generated by a fan and electric heater, which is blown into the insulation box connection port below the box. The dry air fills the port area, thus preventing wet flue gas from entering the insulation box through a dry air seal. However, due to uncertainties in the port length and blowing angle, the dry air cannot completely isolate the wet flue gas. Under certain operating conditions, such as when wet flue gas rises and intrudes into the insulation box, condensation can form on the insulator surface, potentially leading to a short circuit at the cathode. Utility Model Content

[0005] To address the technical problems mentioned above, this utility model provides a magnetic levitation insulation box for a wet electrostatic precipitator. Utilizing magnetic levitation technology, a magnetic levitation load block replaces the original insulator. When energized, a magnetic field is generated, causing the magnetic levitation load block and the cathode suspension block to repel each other. The cathode suspension block then lifts the cathode wire a certain distance, achieving contactless levitation of the cathode. This significantly improves the cathode's insulation performance. Even if condensation and adhesion occur due to the rising wet flue gas, the cathode wire remains suspended, preventing discharge and improving system operational stability.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] This utility model provides a magnetic levitation insulation box for a wet electrostatic precipitator, including a cathode suspension block and a magnetic levitation load-bearing block located inside the insulation box shell. The cathode suspension block is located in the space above the magnetic levitation load-bearing block and is connected to a vertically arranged cathode rod. The magnetic levitation load-bearing block has an opening inside to accommodate the cathode rod passing through. The bottom of the cathode rod passes through the opening of the magnetic levitation load-bearing block. A magnetic levitation component is provided on the contact surface of the cathode suspension block and the magnetic levitation load-bearing block. When energized, the magnetic levitation component generates a mutually repulsive magnetic field, causing the cathode suspension block to move away from the surface of the magnetic levitation load-bearing block by a distance due to magnetic force, thereby achieving magnetic levitation.

[0008] Furthermore, after the bottom of the cathode rod passes through the opening in the magnetic levitation load block, it connects to the cathode wire inside the wet electrostatic precipitator.

[0009] Furthermore, the bottom of the insulating box shell is provided with a base plate, and the magnetic levitation load block is fixed on the base plate through the insulating box base. The cathode rod passes through the magnetic levitation load block, the insulating box base and the base plate in sequence.

[0010] Furthermore, the top of the cathode rod is connected to a power source via a wire.

[0011] Furthermore, the contact surfaces between the cathode levitation block and the magnetic levitation load-bearing block are matching conical surfaces.

[0012] Furthermore, the contact surface of the cathode levitation block is a convex conical surface, while the contact surface of the magnetic levitation load-bearing block is a concave conical surface.

[0013] Furthermore, the convex conical surface specifically refers to the central region of the cathode suspension block contact surface protruding from the edge region.

[0014] Furthermore, the concave conical surface specifically refers to the fact that the height of the central region of the contact surface of the magnetic levitation load-bearing block is less than the height of the edge region.

[0015] Furthermore, the magnetic levitation assembly includes two sets of electromagnetic components arranged in pairs, or one set is an electromagnetic component and the other set is a permanent magnet component.

[0016] Furthermore, the magnetic levitation assembly utilizes multiple sets of annular permanent magnets or electromagnetic coils arranged on the contact surface of the cathode levitation block and the magnetic levitation load-bearing block to generate mutually repulsive magnetic fields.

[0017] Compared with existing technologies, one or more of the above technical solutions have the following beneficial effects:

[0018] 1. Utilizing a magnetic levitation component, a certain distance is maintained between the cathode levitation block and the magnetic levitation support block under the influence of magnetic repulsion. This allows the high-voltage cathode wire and cathode hanger to be levitated by the cathode levitation block. During dust removal, even if wet flue gas rises from the openings of the magnetic levitation support block into the interior of the insulation box, causing condensation on the cathode levitation block and cathode hanger, the levitation effect of the cathode levitation block ensures a sufficient distance between the cathode hanger and the insulation box shell and base plate, making discharge less likely. This method offers a more stable seal compared to traditional dry air sealing, significantly reducing the probability of electric field discharge short circuits. Furthermore, since there is no direct contact between the cathode and anode, the original sealing fan and electric heater are unnecessary, thus saving energy.

[0019] 2. When the flue gas inside the dust collector flows in the space below the bottom plate, the turbulence causes the cathode system to be displaced in the horizontal direction. When the magnetic field force is perpendicular to the conical surface, the conical surface of the cathode suspension block and the magnetic suspension load block plays a damping and limiting role, slowing down the swaying of the cathode and avoiding the discharge short circuit caused by the cathode and anode being too close. Attached Figure Description

[0020] The accompanying drawings, which form part of this specification, are used to provide a further understanding of this utility model. The illustrative embodiments of this utility model and their descriptions are used to explain this utility model and do not constitute an improper limitation of this utility model.

[0021] Figure 1 This is a schematic diagram of the magnetic levitation insulation box structure of the wet electrostatic precipitator provided by this utility model.

[0022] In the diagram: 1. Insulation box shell; 2. Cathode suspension rod; 3. Cathode suspension block; 4. Magnetic suspension load-bearing block; 5. Base plate. Detailed Implementation

[0023] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0024] It should be noted that the following detailed description is exemplary and intended to provide further explanation of the present invention. Unless otherwise specified, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains.

[0025] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this utility model. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0026] In wet electrostatic precipitators, the insulating box supports the cathode system, thus isolating it from the anode. Current technology uses dry air to isolate the wet flue gas, essentially relying on insulators to achieve insulation between the cathode and anode. The insulators here serve both insulating and cathode support functions. Because the insulators are in direct contact with the flue gas, current solutions utilize dry air to prevent the wet flue gas from rising and adhering to the inner wall of the insulator, thereby preventing short circuits. However, the isolation effect of dry air is highly dependent on its temperature and the injection angle of the air nozzle. Furthermore, changes in ambient temperature and weather also affect the parameters of the dry air, potentially posing uncontrollable risks to the operation of the wet electrostatic precipitator system.

[0027] In addition, the energy consumption of dry air system equipment is relatively high, especially the power consumption of electric heaters, which accounts for a large proportion of the power consumption in wet electrostatic precipitators.

[0028] Therefore, the following embodiment provides a magnetic levitation insulation box for a wet electrostatic precipitator. Utilizing magnetic levitation technology, a magnetic levitation load block replaces the original insulator. When energized, a magnetic field is generated, causing the magnetic levitation load block and the cathode suspension block to repel each other. The cathode suspension block then lifts the cathode wire a certain distance, achieving contactless levitation of the cathode. This significantly improves the cathode's insulation performance. Even if condensation and adhesion occur due to the rising wet flue gas, the levitation state of the cathode wire prevents discharge, thus improving system stability. Furthermore, it eliminates the need for a sealing fan and electric heater, reducing system energy consumption and minimizing equipment failure risk.

[0029] A magnetic levitation insulation box for a wet electrostatic precipitator includes a cathode suspension block and a magnetic levitation support block located inside the insulation box shell. The cathode suspension block is located in the space above the magnetic levitation support block and is connected to a vertically arranged cathode rod. The magnetic levitation support block has an opening inside to accommodate the cathode rod, and the bottom of the cathode rod passes through the opening of the magnetic levitation support block and connects to the cathode wire inside the wet electrostatic precipitator. A magnetic levitation component is provided on the contact surface between the cathode suspension block and the magnetic levitation support block. When energized, the magnetic levitation component generates a mutually repulsive magnetic field, causing the cathode suspension block to move away from the surface of the magnetic levitation support block by a certain distance due to magnetic force, thus achieving levitation.

[0030] like Figure 1 As shown, this embodiment consists of an insulating box shell 1, a cathode suspension rod 2, a cathode suspension block 3, a magnetic suspension load-bearing block 4, and a base plate 5.

[0031] An insulating box base is provided on the inner surface of the base plate 5. The magnetic levitation load block 4 is fixed on the insulating box base. The magnetic levitation load block 4 has an opening inside to accommodate the cathode rod 2. The cathode suspension block 3 is located in the space above the magnetic levitation load block 4. The cathode suspension block 3 is connected to the cathode rod 2. The cathode rod 2 is arranged in a vertical direction. After passing through the opening of the magnetic levitation load block 4 at the bottom, it is connected to the cathode wire inside the wet electrostatic precipitator. The top is connected to the power supply through a wire.

[0032] The contact surfaces of the cathode levitation block 3 and the magnetic levitation load block 4 are matching conical surfaces. The conical surface of the cathode levitation block 3 is convex, and the conical surface of the magnetic levitation load block 4 is concave. This creates a certain angle between the magnetic field lines and the horizontal plane when the levitation is formed, thus providing a certain damping for the lateral displacement of the cathode lines.

[0033] The magnetic levitation component is as follows: the contact surfaces of the cathode levitation block 3 and the magnetic levitation load-bearing block 4 have permanent magnet or electromagnetic components, at least one of which is an electromagnetic component. When the electromagnetic component is energized, it generates a repulsive magnetic force, and the repulsive magnetic force between the two is controllable, so that the cathode levitation block 3 can be moved away from the surface of the magnetic levitation load-bearing block 4 by the magnetic force, while driving the cathode suspension rod 2 and the cathode wire to rise a certain distance.

[0034] In this embodiment, the magnetic levitation assembly includes two sets of electromagnetic components arranged in pairs, or one set of electromagnetic components and the other set of permanent magnet components. Multiple sets of permanent magnets or electromagnetic coils can be arranged in a ring on the contact surface between the cathode levitation block 3 and the magnetic levitation load-bearing block 4. For example, when the magnetic levitation component arranged on the surface of the cathode levitation block 3 is an electromagnetic component, the magnetic levitation component arranged on the surface of the magnetic levitation load-bearing block 4 can be a permanent magnet component or an electromagnetic component.

[0035] Both the magnetic levitation support block 4 and the cathode suspension block 3 are made of insulating materials to prevent the current on the cathode wire from being transmitted to the insulating box shell 1 and the base plate 5 through the cathode suspension block 3 and the magnetic levitation support block 4 when they come into contact, thus preventing the shell from becoming electrified.

[0036] The cathode rod 2 is made of a corrosion-resistant material. In this embodiment, it can be made of materials such as 2205 or 2507.

[0037] 2205 stainless steel is a type of stainless steel with a ferritic and austenitic duplex structure. Due to its high nitrogen (N) and molybdenum (Mo) content, it has excellent corrosion resistance.

[0038] 2507 stainless steel, also known as super duplex stainless steel or S32750, possesses excellent corrosion resistance and high strength. Its chemical composition primarily includes 25% chromium (Cr), 7% nickel (Ni), 4% molybdenum (Mo), and 0.25%–0.32% nitrogen (N). This unique chemical composition allows 2507 stainless steel to form a distinctive austenitic-ferrite duplex structure during heat treatment.

[0039] The outer shell 1 and the base plate 5 of the insulation box can be made of corrosion-resistant carbon steel or stainless steel.

[0040] When the machine stops, the magnetic force between the cathode suspension block 3 and the magnetic suspension load block 4 is lost, and the cathode suspension block 3 presses down on the magnetic suspension load block 4 by its own weight, and the two are in direct contact.

[0041] During operation, the electromagnetic components are energized, and the magnetic field strength is adjusted by controlling the current. The force of the magnetic field is used to balance the gravity of the cathode suspension block 3, the cathode rod 2, and the cathode wire, thereby achieving a contactless suspension state of the cathode until the distance between the cathode suspension block 3 and the magnetic suspension load block 4 meets the spacing requirements for safe operation of the dust collector.

[0042] After the distance between the cathode suspension block 3 and the magnetic suspension load block 4 meets the spacing requirements for safe operation of the dust collector, high voltage is applied to the cathode line to perform dust removal.

[0043] With this structure, a certain distance exists between the cathode suspension block 3 and the magnetic levitation support block 4. The high-voltage cathode wire and cathode hanger 2 are suspended by the cathode suspension block 3 under the influence of the magnetic field. During dust removal, even if wet flue gas rises from the opening of the magnetic levitation support block 4 into the interior of the insulating box shell 1, causing condensation on the cathode suspension block 3 and cathode hanger 2, the cathode hanger 2 is kept sufficiently far from the insulating box shell 1 and base plate 5 due to the levitation effect of the cathode suspension block 3. Therefore, discharge is less likely to occur. Compared to the traditional dry air sealing method, this structure is more stable and significantly reduces the probability of electric field discharge short circuits. Furthermore, since there is no direct contact between the cathode and anode, the original sealing fan and electric heater are unnecessary.

[0044] The flue gas inside the dust collector flows in the space below the base plate 5. The turbulence causes the cathode system to be displaced in the horizontal direction. With the structure of this embodiment, when the magnetic field force is perpendicular to the conical surface, the insulation box can play a damping and limiting role, slowing down the swaying of the cathode and avoiding the cathode and anode from being too close to cause a discharge short circuit.

[0045] In summary, the application of magnetic levitation devices, the arrangement and shape characteristics between the cathode levitation block and the magnetic levitation load-bearing block, and the fact that operation requires no sealed air or electric heaters result in low system energy consumption and more economical operation.

[0046] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. 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 magnetic levitation insulating box for a wet electrostatic precipitator, characterized in that, It includes a cathode levitation block and a magnetic levitation load-bearing block located inside the insulating box shell. The cathode levitation block is located in the space above the magnetic levitation load-bearing block and is connected to the vertically arranged cathode rod. The magnetic levitation load-bearing block has an opening inside to accommodate the cathode rod passing through. The bottom of the cathode suspension rod passes through the opening of the magnetic levitation support block; a magnetic levitation component is provided on the surface where the cathode suspension block and the magnetic levitation support block are in contact. When the magnetic levitation component is energized, it generates a repulsive magnetic field, causing the cathode suspension block to move away from the surface of the magnetic levitation support block by a certain distance due to magnetic force, thus achieving magnetic levitation.

2. The magnetic levitation insulating box for a wet electrostatic precipitator as described in claim 1, characterized in that, The bottom of the cathode rod passes through the opening in the magnetic levitation load block and connects to the cathode wire inside the wet electrostatic precipitator.

3. The magnetic levitation insulating box for a wet electrostatic precipitator as described in claim 1, characterized in that, The bottom of the insulating box shell is provided with a base plate, and the magnetic levitation load block is fixed on the base plate through the insulating box base. The cathode rod passes through the magnetic levitation load block, the insulating box base and the base plate in sequence.

4. The magnetic levitation insulating box for a wet electrostatic precipitator as described in claim 1, characterized in that, The top of the cathode rod is connected to a power source via a wire.

5. A magnetic levitation insulating box for a wet electrostatic precipitator as described in claim 1, characterized in that, The contact surfaces between the cathode levitation block and the magnetic levitation load-bearing block are matching conical surfaces.

6. A magnetic levitation insulating box for a wet electrostatic precipitator as described in claim 4, characterized in that, The contact surface of the cathode suspension block is a convex conical surface, and the contact surface of the magnetic levitation load-bearing block is a concave conical surface.

7. A magnetic levitation insulating box for a wet electrostatic precipitator as described in claim 6, characterized in that, The convex conical surface specifically refers to the central region of the cathode suspension block contact surface that protrudes from the edge region.

8. A magnetic levitation insulating box for a wet electrostatic precipitator as described in claim 6, characterized in that, Specifically, the concave conical surface is characterized by the fact that the height of the central region of the contact surface of the magnetic levitation load-bearing block is less than the height of the edge region.

9. A magnetic levitation insulating box for a wet electrostatic precipitator as described in claim 1, characterized in that, The magnetic levitation assembly includes two sets of electromagnetic components arranged in pairs, or one set is an electromagnetic component and the other set is a permanent magnet component.

10. A magnetic levitation insulating box for a wet electrostatic precipitator as described in claim 1, characterized in that, The magnetic levitation assembly utilizes multiple sets of annular permanent magnets or electromagnetic coils arranged on the contact surface of the cathode levitation block and the magnetic levitation load-bearing block to generate mutually repulsive magnetic fields.

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