Single-channel fault intelligent on-off high-voltage electrostatic dust collection system

Abstract

A single-channel fault intelligent on-off high-voltage electrostatic dust collection system is provided with a plurality of cathode frames which are insulated from one another, the cathode frames are insulated from anode dust collection plates on the two adjacent sides to form a dust collection channel, and the anode dust collection plates are in equipotential connection with a purification box. A cathode discharge wire is connected to the output end of the high-voltage power supply sequentially through a cathode frame, a cathode frame insulation supporting assembly, electric high-voltage isolation switches and a cathode discharge current detection mutual inductor, the electric high-voltage isolation switches are controlled by a power supply parameter analyzer, and one dust collection channel is provided with one electric high-voltage isolation switch; whether the dust collection channel forms high-voltage electrostatic field dust collection operation or not is controlled through on-off of the high-voltage isolation switch.

Description

Technical Field

[0001] This invention relates to an electrostatic dust removal system, and more particularly to an electrostatic dust removal device that autonomously detects single-channel power supply parameters, employs a single electric field and single-channel high-voltage power supply, and automatically disconnects the high-voltage power supply in the event of a single-channel failure. It belongs to the field of dust removal technology for controlling industrial atmospheric dust pollution. Background Technology

[0002] Electrostatic precipitators are essential equipment for industrial dust control. Their function is to remove particulate matter from flue gas, significantly reducing the amount of dust emitted into the atmosphere. This is a crucial environmental protection device for controlling pollution and improving air quality. Electrostatic precipitators are structurally divided into 1-5 electric fields, each containing several channels. Each channel includes a cathode discharge component and an anode dust collection component. Typically, one electric field is powered by a high-voltage power supply. According to electrostatic precipitator theory, the high voltage between the cathode and anode and the anode's dust collection area are key to the efficiency of electrostatic precipitators. In practical applications, a malfunction at any point in the cathode discharge component or anode dust collection component within a channel can cause a decrease in the overall electric field voltage, thus reducing the dust collection efficiency of multiple channels powered by the same high-voltage power supply. In severe cases, the high-voltage power supply may fail to start, rendering the dust collection capacity of multiple channels powered by the same high-voltage power supply ineffective, equivalent to a complete electric field failure, causing the entire anode dust collection area to become ineffective and severely impacting the dust collection efficiency of the electrostatic precipitator. Summary of the Invention

[0003] The purpose of this invention is to address the deficiencies in the existing technology by proposing an electrostatic dust removal device that can autonomously detect single-channel power supply parameters, employs a single electric field and single-channel high-voltage power supply, and can automatically disconnect the high-voltage power supply after a single-channel failure.

[0004] To achieve the above objectives, the present invention provides a single-channel fault intelligent switching high-voltage electrostatic dust removal system, comprising: a purification chamber, a dust collection electric field, a dust collection channel, an anode dust collection plate, a cathode discharge line, a cathode frame, a cathode frame insulation support assembly, a high-voltage power supply, an electric high-voltage disconnect switch, a cathode discharge current detection transformer, and a power supply parameter analyzer.

[0005] The purification chamber is equipped with several dust collection electric fields, and the front and rear ends of the purification chamber are connected to the flue gas inlet pipe and the flue gas outlet pipe, respectively.

[0006] The dust collection electric field consists of several anode dust collection plates and cathode frames arranged sequentially at intervals. Two adjacent anode dust collection plates and the middle cathode frame form a dust collection channel. The anode dust collection plates are equipotentially connected to the purification chamber.

[0007] The cathode frame is provided with several cathode discharge lines. The upper part of the cathode frame is rigidly connected to the cathode frame insulation support assembly. The cathode frame is suspended in the middle of the dust collection channel through the cathode frame insulation support assembly and is insulated from the anode dust collection plates and the purification box on both sides. Several cathode frames inside the purification box are insulated from each other.

[0008] The cathode frame insulation support assembly consists of a solid insulation support cylinder, a conductive suspension rod, and a support cover plate. The solid insulation support cylinder is arranged on the top of the purification chamber, is made of insulating material, and is insulated from the purification chamber. The conductive suspension rod passes through the central hole of the solid insulation support cylinder, is rigidly connected to the cathode frame at the bottom, and is connected to the support cover plate at the top. It is also connected to the electric high-voltage disconnect switch through electrical lines.

[0009] The electric high-voltage disconnect switch is a high-voltage resistant device. The electric high-voltage disconnect switch is controlled by the power supply parameter analyzer. Depending on the situation, the high-voltage power output from the high-voltage power supply is introduced into the cathode discharge line. One electric high-voltage disconnect switch is arranged in each dust collection channel. The opening and closing of the electric high-voltage disconnect switch controls whether a high-voltage electrostatic field dust collection operation is formed in this dust collection channel.

[0010] The high-voltage power supply is a high-voltage, low-current DC power supply. The output voltage and current signals of the high-voltage power supply are uploaded to the power supply parameter analyzer in real time and are controlled by the power supply parameter analyzer. The high-voltage power supply is electrically connected to the electric high-voltage disconnect switch. The high-voltage electrical energy output by the high-voltage power supply is conducted to the cathode discharge line through the electric high-voltage disconnect switch, the cathode frame insulation support component, and the cathode frame in sequence, so that a high-voltage electrostatic field is formed between the cathode discharge line and the anode dust collection plate.

[0011] The cathode discharge current detection transformer is an electrical component used to detect cathode current parameters. It is arranged on the electrical line between the high-voltage power supply and the cathode frame insulation support assembly. One cathode discharge current detection transformer is arranged for each dust collection channel. The cathode power supply current parameters of each dust collection channel are sensed by the coil and uploaded to the power supply parameter analysis device for parameter analysis through the electrical line.

[0012] The power supply parameter analyzer collects electrical signal parameters from the high-voltage power supply and the cathode discharge current detection transformer in real time. After data analysis, comparison and judgment by the power supply parameter analyzer, the operating status of the electrostatic dust removal device is determined, and the output voltage of the high-voltage power supply and the on / off state of the high-voltage disconnection switch relay are controlled.

[0013] The power supply parameter analyzer operates as follows:

[0014] Step 1: Power on the power supply parameter analyzer, collect sensor data, and compare the collected real-time data with the data in the power supply parameter analyzer's database. If there is an error in the compared data, a fault message will be displayed; if the compared data is correct, proceed to the next step.

[0015] Step 2: The power supply parameter analyzer controls the high-voltage disconnect switch relay to close, enabling the high-voltage power supply to start.

[0016] Step 3: Real-time acquisition of electrical signal data from all cathode discharge current detection transformers, and calculation of the average value. For each dust collection channel, the difference between the cathode discharge current detection transformer signal data and the average value is calculated. This difference is then compared to the set difference value in the power supply parameter analyzer database. If the difference is less than the set value, the dust collection channel is considered to be working normally; if it is greater than the set value, the dust collection channel is considered to have a potential fault.

[0017] Step 4: Compare the high voltage output from the high voltage power supply with the high voltage parameters set in the power supply parameter analyzer database. If it is less than the set value, disconnect the high voltage isolating switch relay of the dust collection channel that is determined to have a potential fault, and output a fault alarm display for this channel.

[0018] Repeat steps three through four.

[0019] Beneficial effects of the present invention

[0020] When a single dust collection channel malfunctions, the high-voltage power supply to that channel is automatically disconnected, ensuring the high-voltage operation of other normal dust collection channels powered by the same high-voltage power supply, thus maximizing the high-efficiency dust collection of electrostatic precipitators.

[0021] The system indicates and records faulty dust collection channels, minimizing the time spent locating faults during maintenance and ensuring the high-efficiency, full-cycle operation of the electrostatic precipitator. Attached Figure Description

[0022] Figure 1 A front view diagram of a single-channel fault-controlled intelligent on / off high-voltage electrostatic dust removal system.

[0023] Figure 2 Left view schematic diagram of a single-channel fault-controlled intelligent on / off high-voltage electrostatic dust removal system

[0024] Figure 3 Top view of a single-channel fault-controlled intelligent on / off high-voltage electrostatic dust removal system

[0025] Figure 4 Schematic diagram of the cathode system

[0026] Figure 5 Schematic diagram of the cathode system (left view)

[0027] Figure 6 Cathode frame insulation support assembly

[0028] Figure 7 Schematic diagram of the electrical system of a single-channel fault-intelligent on / off high-voltage electrostatic dust removal system

[0029] Figure 8 Power Supply Parameter Analyzer Workflow Diagram

[0030] 1. Purification chamber; 2. Dust collection electric field; 3. Dust collection channel; 4. Anode dust collection plate; 5. Cathode discharge line; 6. Cathode frame; 7. Cathode frame insulation support assembly; 8. High-voltage power supply; 9. Electric high-voltage disconnect switch; 10. Cathode discharge current detection transformer; 11. Power supply parameter analyzer; 12. Flue gas inlet; 13. Flue gas outlet; 14. High-voltage cable; 15. Solid insulation support cylinder; 16. Conductive suspension rod; 17. Electrical wiring; 18. Purification chamber top insulation box; 19. Support cover plate; 20. Dust collection hopper. Detailed Implementation

[0031] To better understand the above-mentioned objectives, features, and advantages of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments:

[0032] In this embodiment, the single-channel fault intelligent on / off high-voltage electrostatic dust removal system is arranged in a horizontal dry electrostatic field configuration, divided into four electric fields, each with a corresponding power supply parameter analyzer. Each electric field consists of 11 dust collection channels and is powered by a high-voltage power supply. Each dust collection channel is equipped with an electric high-voltage disconnect switch and a cathode discharge current detection transformer. The cathode frame of each channel is suspended in the middle of the dust collection channel by two sets of cathode frame insulation support components. The high-voltage power output from the high-voltage power supply is conducted to the cathode discharge line through the high-voltage disconnect switch relay, the cathode frame insulation support components, and the cathode frame via a high-voltage cable, thereby forming a high-voltage electrostatic field between the cathode discharge line and the anode dust collection plate for dust collection.

[0033] The purification chamber (1) is equipped with four dust collection electric fields (2). The flue gas inlet (12) and flue gas outlet (13) of the purification chamber (1) are connected to the flue gas inlet pipe and the flue gas outlet pipe, respectively. The top of the purification chamber (1) is equipped with a top insulation box (19), and the bottom of the purification chamber (1) is equipped with a dust collection hopper (21) for collecting dust. Each dust collection electric field (2) consists of 12 anode dust collection plates (4) and 11 cathode frames (6) arranged in sequence at intervals. Two adjacent anode dust collection plates (4) and the middle cathode frame (6) form a dust collection channel (3). There are a total of 11 dust collection channels in one electric field. The anode dust collection plates (4) are equipotentially connected to the purification chamber (1). The cathode frame (6) is equipped with several cathode discharge lines (5). The upper part of the cathode frame (6) is rigidly connected to the cathode frame insulation support assembly (7). The cathode frame (6) is suspended in the middle of the dust collection channel (3) by the cathode frame insulation support assembly (7), and is insulated from the anode dust collection plates (4) on both sides and the purification box (1). All cathode frames (6) in the purification box (1) are insulated from each other. The cathode frame insulation support assembly (7) consists of a solid insulation support cylinder (16), a conductive suspension rod (17) and a support cover plate (20). The solid insulation support cylinder (16) is arranged in the heat preservation box (19) at the top of the purification box. It is made of insulating material and is insulated from the purification box (1). The conductive suspension rod (17) passes through the central hole of the solid insulation support cylinder (16). The lower part is mechanically connected to the cathode frame (6) and the upper part is mechanically connected to the support cover plate (20). It is also connected to the electric high-voltage disconnect switch (9) through electrical lines. The electric high-voltage disconnect switch (9) is a high-voltage switching device. The electric high-voltage disconnect switch (9) is controlled by the power supply parameter analyzer (11). Depending on the situation, the high-voltage power output from the high-voltage power supply (8) is introduced into the cathode discharge line (5). The opening and closing of the electric high-voltage disconnect switch (9) controls whether the dust collection channel (3) forms a high-voltage electrostatic field for dust collection. The high-voltage power supply (8) is a high-voltage, low-current DC power supply. The output voltage and current signals of the high-voltage power supply (8) are uploaded to the power supply parameter analyzer (11) in real time and are controlled by the power supply parameter analyzer (11). The cathode discharge current detection transformer (10) is an electrical component used to detect the cathode current parameters. It senses the cathode power supply current parameters of the dust collection channel through the coil and uploads the current parameters to the power supply parameter analyzer (11) through the electrical circuit. The power supply parameter analyzer (11) collects electrical signal parameters from the high-voltage power supply (8) and the cathode discharge current detection transformer (10) in real time. After data analysis, comparison, and judgment by the power supply parameter analyzer (11), the operating status of the electrostatic precipitator is determined, and the output voltage of the high-voltage power supply (8) and the on / off state of the electric high-voltage disconnect switch (9) are controlled. The working process of the power supply parameter analyzer (11) is as follows: Figure 8 .

[0034] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed invention. The scope of protection claimed by the appended claims and their equivalents is defined.

Claims

1. A single pass fault intelligent on-off high voltage electrostatic precipitation system, characterized in that: The application relates to a single-channel fault intelligent on-off high-voltage electrostatic dust removal system. The cathode frame is rigidly connected with a cathode frame insulation support assembly, and the cathode frame is hung in the middle of the dust removal channel through the cathode frame insulation support assembly and is insulated from the purification box.

2. A single pass fault intelligent on-off high voltage electrostatic precipitation system according to claim 1, characterized in that: The cathode frame insulation support assembly is composed of a solid insulation support cylinder, a conductive suspension boom and a support cover plate.

3. A single pass fault intelligent on-off high voltage electrostatic precipitation system according to claim 1, characterized in that:

4. The single-channel fault intelligent on-off high-voltage electrostatic dust removal system according to claim 1 is characterized in that: The cathode frame insulation support assembly is composed of a solid insulation support cylinder, a conductive suspension boom and a support cover plate.

5. The single-channel fault intelligent on-off high-voltage electrostatic dust removal system according to claim 1 is characterized in that: The electric high-voltage disconnector is controlled by the power supply parameter analyzer, one electric high-voltage disconnector is arranged in one dust removal channel, and whether the high-voltage electrostatic field dust removal operation is formed in the dust removal channel is controlled through on-off of the high-voltage disconnector.

6. The single-channel fault intelligent on-off high-voltage electrostatic dust removal system according to claim 1 is characterized in that: The high-voltage power supply is a high-voltage low-current direct-current power supply, a high-voltage electrostatic field is formed between the cathode discharge wire and the anode dust removal plate, output voltage and current signals of the high-voltage power supply are uploaded to the power supply parameter analyzer in real time and are controlled by the power supply parameter analyzer.

7. The single-channel fault intelligent on-off high-voltage electrostatic dust removal system according to claim 1 is characterized in that: The cathode discharge current detection transformer is an electrical element for detecting cathode current parameters, is arranged on an electrical line between the high-voltage power supply and the cathode frame insulation support assembly, one cathode discharge current detection transformer is arranged in one dust removal channel, the coil inducts the cathode power supply current parameters of each dust removal channel, and the current parameters are uploaded to the power supply parameter analysis device through the electrical line for parameter analysis.

8. The single-channel fault intelligent on-off high-voltage electrostatic dust removal system according to claim 1 is characterized in that: The front end and the rear end of the purification box are respectively connected with a flue gas inlet pipeline and a flue gas outlet pipeline. ​

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