An acoustic sootblower for an electrostatic precipitator

Abstract

The utility model discloses a sound wave soot blower for electrostatic precipitator, it includes the casing, one end fixed mounting of casing has compressed gas source, one side of compressed gas source is provided with main gas pipe, be provided with a plurality of different length's branch gas pipe on main gas pipe, one end of a plurality of branch gas pipe all is fixedly installed with intelligent control valve all to the shell and is all downward, the lower end fixed mounting of intelligent control valve has variable frequency formula resonant cavity sound wave generator, the lower end fixed connection of variable frequency formula resonant cavity sound wave generator has directional sound wave sound signal horn, directional sound wave sound signal horn is located the top of dust collecting electrode, through the branch gas pipe of different length to directional sound wave sound signal horn and variable frequency formula resonant cavity sound wave generator form asymmetric interval distribution, effectively reduced the sound wave interference between each electric field.

Description

Technical Field

[0001] This utility model relates to the field of electrostatic dust removal technology, and in particular to an acoustic dust blowing device for electrostatic dust collectors. Background Technology

[0002] Electrostatic precipitators in thermal power plants use a high-voltage electric field to ionize flue gas. Dust particles in the airflow become charged and separate from the airflow under the action of the electric field. However, after the electrostatic precipitator has been running for a period of time, dust particles will adhere to the collecting electrode and the corona electrode. When the amount of dust adhering to the electrode reaches a certain level, it will prevent the corona electrode from generating a corona, thereby reducing the dust collection efficiency and causing the electrostatic precipitator to malfunction.

[0003] The existing acoustic soot blowing devices for electrostatic precipitators still have the following problems:

[0004] The existing electrostatic precipitator's acoustic soot blowing device consumes a lot of compressed gas during operation, resulting in high energy costs. The simultaneous operation of multiple electric fields can easily generate acoustic interference, affecting the cleaning effect. Furthermore, it lacks an intelligent monitoring and feedback mechanism, making it impossible to automatically adjust parameters based on the actual cleaning effect.

[0005] A search revealed Chinese Patent Publication No. CN222267449U, which discloses an acoustic soot blowing device for an electrostatic precipitator. The electrostatic precipitator includes a dust removal chamber with several series-connected electric fields. The acoustic soot blowing device includes a compressed gas source, a resonant cavity high-intensity acoustic wave generator, an acoustic horn, and an adjustable valve. Several resonant cavity high-intensity acoustic wave generators are located at the top of each electric field. Each resonant cavity high-intensity acoustic wave generator is connected to the compressed gas source via a gas pipeline. The adjustable valve is connected to the input end of the resonant cavity high-intensity acoustic wave generator, and the acoustic horn is connected to the output end of the resonant cavity high-intensity acoustic wave generator. This invention uses the opening and closing of the adjustable valve to control the acoustic intensity and start / stop of the resonant cavity high-intensity acoustic wave generator, thereby achieving high flexibility in regulating the acoustic intensity of different electric fields. However, the device consumes a large amount of compressed gas during use, which may lead to excessive energy costs. The simultaneous operation of multiple electric fields can easily generate acoustic interference, affecting the dust removal effect. Furthermore, it lacks an intelligent monitoring and feedback mechanism and cannot automatically adjust parameters based on the actual dust removal effect. Utility Model Content

[0006] The purpose of this utility model is to provide an acoustic soot blowing device for electrostatic precipitators, which solves the problems of existing acoustic soot blowing devices for electrostatic precipitators, such as high compressed gas consumption leading to high energy costs, the tendency for multiple electric fields to work simultaneously and generate acoustic interference that affects the cleaning effect, and the lack of an intelligent monitoring and feedback mechanism that cannot automatically adjust parameters according to the actual cleaning effect.

[0007] To achieve the above objectives, an acoustic soot blowing device for an electrostatic precipitator is provided, comprising a housing, a compressed gas source fixedly installed at one end of the housing, a main air pipe provided on one side of the compressed gas source, and a plurality of branch air pipes of different lengths provided on the main air pipe.

[0008] Each of the several bronchial tubes has a smart control valve fixedly installed at one end through the housing and pointing downwards. A frequency conversion resonant cavity sound wave generator is fixedly installed at the lower end of the smart control valve. A directional sound wave transmitting horn is fixedly connected to the lower end of the frequency conversion resonant cavity sound wave generator and is located above the dust collection electrode.

[0009] According to the sonic blowing device for an electrostatic precipitator, an air inlet is provided on the left side of the housing, and an air outlet is provided on the right side of the housing.

[0010] According to the sonic soot blowing device for an electrostatic precipitator, a dust hopper is fixedly installed at the bottom of the housing, and a dust discharge port is provided at the bottom of the dust hopper.

[0011] According to the sonic dust blowing device for an electrostatic precipitator, a plurality of dust collecting electrodes are fixedly installed inside the housing, and a plurality of corona electrodes are provided on one side of each of the plurality of dust collecting electrodes.

[0012] According to the aforementioned acoustic soot blowing device for an electrostatic precipitator, an acoustic monitoring module is provided at the upper end of each of the several dust collecting electrodes.

[0013] According to the aforementioned acoustic soot blowing device for an electrostatic precipitator, a controller is provided on the front of the housing, and the controller is electrically connected to an intelligent control valve, a frequency conversion resonant cavity acoustic wave generator, and an acoustic wave monitoring module.

[0014] According to the aforementioned acoustic soot blowing device for an electrostatic precipitator, the intelligent control valve employs a device with an internal pressure sensor and a flow sensor.

[0015] The above-mentioned solution has the following beneficial effects:

[0016] 1. This patent, by setting up an intelligent control valve and a variable frequency resonant cavity acoustic wave generator, allows for precise control of gas flow through the intelligent control valve during use, and the variable frequency resonant cavity acoustic wave generator can adjust the power as needed, thereby reducing unnecessary energy consumption.

[0017] 2. This patent, by setting up bronchial tubes, directional acoustic horns, frequency-converted resonant cavity acoustic generators, acoustic monitoring modules, and controllers, achieves asymmetrical spacing of the directional acoustic horns and frequency-converted resonant cavity acoustic generators through bronchial tubes of different lengths during use. This effectively reduces acoustic interference between electric fields. Through the cooperation of the acoustic monitoring module and the controller, real-time monitoring and automatic control of the dust removal process are realized.

[0018] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0019] The present invention will be further described below with reference to the accompanying drawings and embodiments;

[0020] Figure 1 This is a schematic diagram of an acoustic soot blowing device for an electrostatic precipitator according to the present invention.

[0021] Figure 2 This is a schematic diagram of the branch pipe distribution of an acoustic soot blowing device for an electrostatic precipitator according to the present invention.

[0022] Figure 3 This is an internal sectional view of the housing of an acoustic soot blowing device for an electrostatic precipitator according to the present invention.

[0023] Figure 4 This is a schematic diagram of an intelligent control valve for an acoustic soot blowing device used in an electrostatic precipitator, according to the present invention.

[0024] Legend:

[0025] 1. Housing; 2. Air inlet; 3. Ash outlet; 4. Air outlet; 5. Compressed gas source; 6. Main air pipe; 7. Controller; 8. Acoustic wave monitoring module; 9. Branch pipe; 10. Dust collection electrode; 11. Corona electrode; 12. Intelligent control valve; 13. Variable frequency resonant cavity acoustic wave generator; 14. Directional acoustic wave transmission horn; 15. Ash hopper. Detailed Implementation

[0026] This section will describe in detail the specific embodiments of the present utility model. The preferred embodiments of the present utility model are shown in the accompanying drawings. The purpose of the drawings is to supplement the textual description with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the present utility model, but they should not be construed as limiting the scope of protection of the present utility model.

[0027] Reference Figure 1-4This utility model discloses an acoustic soot blowing device for an electrostatic precipitator, comprising a housing 1. A compressed gas source 5 is fixedly installed at one end of the housing 1. A main gas pipe 6 is provided on one side of the compressed gas source 5. Several branch pipes 9 of different lengths are provided on the main gas pipe 6. One end of each branch pipe 9 passes through the housing 1 and is fixedly mounted downwards with an intelligent control valve 12. A variable frequency resonant cavity acoustic generator 13 is fixedly installed at the lower end of the intelligent control valve 12. A directional acoustic horn 14 is fixedly connected to the lower end of the variable frequency resonant cavity acoustic generator 13. The directional acoustic horn 14 is located above the dust collecting electrode 10. The intelligent control valve 12 has built-in pressure and flow sensors, which can monitor gas parameters in real time and precisely adjust the opening according to the instructions of the controller 7, thereby achieving precise control of the gas flow rate entering the variable frequency resonant cavity acoustic generator 13. By precisely controlling the gas flow rate, gas waste is avoided and unnecessary energy consumption is reduced. The acoustic generator 13 can flexibly adjust its operating frequency and power to optimize acoustic parameters in real time according to the dust accumulation characteristics and working conditions of different electric fields, so that the acoustic energy can be applied to the dust accumulation layer more accurately, significantly improving the dust removal effect. The variable frequency resonant cavity acoustic generator 13 with different electric fields can be set with different operating frequencies. Combined with the directional acoustic wave transmission horn 14 and the variable frequency resonant cavity acoustic generator 13 with different lengths of bronchial pipes 9 to form an asymmetrical interval distribution, it can effectively avoid the resonance interference between acoustic waves at the same frequency, ensure that the propagation path of acoustic waves in each electric field is independent and controllable, and improve the uniformity of dust removal. The directional acoustic wave transmission horn 14 has a special acoustic wave guiding structure inside, which can concentrate the acoustic waves generated by the variable frequency resonant cavity acoustic generator 13 to propagate to a specific area, avoiding the disorderly diffusion of acoustic waves in the dust removal chamber. This allows the acoustic energy to be applied accurately to dust collection electrode 10 and corona electrode 11, which are prone to dust accumulation, effectively improving the dust removal effect and reducing the dust removal blind zone caused by the dispersion of acoustic energy.

[0028] An air inlet 2 is provided on the left side of the housing 1, and an air outlet 4 is provided on the right side of the housing 1. A dust hopper 15 is fixedly installed at the bottom of the housing 1, and a dust discharge port 3 is provided at the bottom of the dust hopper 15. Several dust collecting electrodes 10 are fixedly installed inside the housing 1. Several corona electrodes 11 are provided on one side of each of the dust collecting electrodes 10. An acoustic monitoring module 8 is provided at the top of each of the dust collecting electrodes 10. The working principle of the dust collecting electrodes 10 and the corona electrodes 11 is that the dust in the airflow is charged and separated from the airflow under the action of the electric field. The process of collecting charged dust is as follows: a high-voltage direct current is used to maintain an electric field sufficient to ionize the gas on the metal anode and cathode. The anions and cations generated after the gas ionization are adsorbed on the dust passing through the electric field, so that the dust gains a charge. Dust particles with different polarities move towards the electrodes of different polarities under the action of the electric field force and are deposited on the electrodes, thereby achieving the purpose of separating dust and gas. After the electrostatic precipitator has been running for a period of time, the dust will adhere to the dust collecting electrode 10 and the corona electrode 11.

[0029] A controller 7 is installed on the front of the housing 1. The controller 7 is electrically connected to the intelligent control valve 12, the frequency-converted resonant cavity acoustic wave generator 13, and the acoustic wave monitoring module 8. The acoustic wave monitoring module 8 collects parameters such as the intensity, frequency, and propagation direction of acoustic waves in each electric field in real time and transmits the data to the controller 7. The controller 7 then analyzes and processes the data through the preset program and algorithm set in the system settings. Based on the analysis results, it sends instructions to the intelligent control valve 12 and the frequency-converted resonant cavity acoustic wave generator 13 to precisely adjust the gas flow rate, the operating frequency and power of the acoustic wave generator. The intelligent control valve 12 is equipped with a device with internal pressure and flow sensors. The intelligent control valve 12 has built-in pressure and flow sensors, which can monitor gas parameters in real time and precisely adjust the opening degree according to the instructions of the intelligent control system to achieve precise control of the gas flow rate entering the frequency-converted resonant cavity acoustic wave generator 13.

[0030] Working principle: When an acoustic soot blowing device for an electrostatic precipitator is put into use, after the electrostatic precipitator has been running for a period of time, when the amount of dust adhering to the dust collecting electrode 10 and the corona electrode 11 reaches a certain level, causing the corona electrode 11 to stop generating corona, thus reducing the dust collection efficiency, the controller 7 receives the acoustic wave parameters of the electric field in real time from the acoustic monitoring module 8, and precisely controls the working state of the intelligent control valve 12 and the frequency conversion resonant cavity acoustic wave generator 13. In conjunction with the directional acoustic wave transmission horn 14 for directional dust removal, the energy recovery system is used to reduce consumption, thereby achieving efficient, energy-saving and intelligent dust removal operation.

[0031] The embodiments of the present utility model have been described in detail above with reference to the accompanying drawings. However, the present utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present utility model.

Claims

1. An acoustic soot blowing device for an electrostatic precipitator, comprising a housing (1), characterized in that, A compressed gas source (5) is fixedly installed on one end of the housing (1), and a main gas pipe (6) is provided on one side of the compressed gas source (5). Several branch pipes (9) of different lengths are provided on the main gas pipe (6). One end of each of the several bronchial tubes (9) passes through the housing (1) and is fixedly installed downwards with an intelligent control valve (12). A variable frequency resonant cavity acoustic wave generator (13) is fixedly installed at the lower end of the intelligent control valve (12). A directional acoustic wave transmission horn (14) is fixedly connected to the lower end of the variable frequency resonant cavity acoustic wave generator (13). The directional acoustic wave transmission horn (14) is located above the dust collection electrode (10).

2. The acoustic soot blowing device for an electrostatic precipitator according to claim 1, characterized in that, An air inlet (2) is provided on the left side of the housing (1), and an air outlet (4) is provided on the right side of the housing (1).

3. The acoustic soot blowing device for an electrostatic precipitator according to claim 1, characterized in that, A dust hopper (15) is fixedly installed at the bottom of the housing (1), and a dust discharge port (3) is opened at the bottom of the dust hopper (15).

4. The acoustic soot blowing device for an electrostatic precipitator according to claim 1, characterized in that, The housing (1) has several dust collection electrodes (10) fixedly installed inside, and each of the dust collection electrodes (10) has several corona electrodes (11) on one side.

5. The acoustic soot blowing device for an electrostatic precipitator according to claim 4, characterized in that, Each of the dust collection electrodes (10) is equipped with an acoustic monitoring module (8) at its upper end.

6. The acoustic soot blowing device for an electrostatic precipitator according to claim 1, characterized in that, The front of the housing (1) is provided with a controller (7), which is electrically connected to the intelligent control valve (12), the frequency conversion resonant cavity acoustic wave generator (13), and the acoustic wave monitoring module (8).

7. The acoustic soot blowing device for an electrostatic precipitator according to claim 1, characterized in that, The intelligent control valve (12) uses a device with an internal pressure sensor and a flow sensor.

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