Sound wave soot blower for electrostatic dust collector

Abstract

The utility model relates to the technical field of sound wave dust removal, and discloses a sound wave soot blower for an electrostatic precipitator, the electrostatic precipitator comprises a dust removal chamber, a plurality of stages of electric fields connected in series are arranged in the dust removal chamber, the sound wave soot blower comprises a compressed gas source, a resonant cavity high-sound-intensity sound wave generator, a sound wave sound transmission horn and an adjustable valve, the top of each electric field is provided with a plurality of resonant cavity high-sound-intensity sound wave generators, each resonant cavity high-sound-intensity sound wave generator is connected with the compressed gas source through a gas pipeline, and the adjustable valve is connected to the input end of the resonant cavity high-sound-intensity sound wave generator. The sound wave transmission horn is connected to the output end of the resonant cavity high-sound-intensity sound wave generator; according to the resonant cavity high-sound-intensity sound wave generator, the sound wave intensity and starting and stopping of the resonant cavity high-sound-intensity sound wave generator can be achieved by adjusting the opening degree and opening and closing of the valve, then the sound wave intensity of different electric fields can be adjusted and controlled, and the flexibility is high.

Description

Technical Field

[0001] The utility model relates to the technical field of sonic dust removal, in particular to a sonic dust blowing device for an electrostatic dust collector. Background Art

[0002] The electrostatic precipitator of a thermal power plant uses a high-voltage electric field to ionize the flue gas. 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: On the metal anode and cathode, a high-voltage direct current is used to maintain an electric field sufficient to ionize the gas. The electrons generated after the gas is ionized - anions and cations - are adsorbed on the dust passing through the electric field, so that the dust acquires an electric charge. Under the action of the electric field force, dust with different charges moves to electrodes of different polarities and deposits on the electrodes, thereby achieving the purpose of separating dust and gas.

[0003] After the electrostatic precipitator has been running for a period of time, dust adheres to the dust collecting electrode and the corona electrode. When the amount of adhered dust reaches a certain level, it will prevent the corona electrode from generating corona, thereby reducing the dust collection efficiency and the electrostatic precipitator cannot work normally.

[0004] At present, electrostatic precipitators mostly use mechanical vibration for dust removal, but there are the following problems with vibration: (1) The vibration force is difficult to determine. A low vibration force may lead to incomplete dust removal of the anode plates and cathode wires, while a high vibration force may lead to damage of the anode plates and cathode wires. (2) The vibration method is difficult to determine: Generally, multiple electric fields vibrate in sequence during a mechanical vibration cycle. As the load of the unit changes, the interval needs to be reduced to ensure the dust removal efficiency of one electric field, resulting in multiple electric field vibrators working at the same time, causing an increase in secondary dust. (3) Scaling such as ammonium bisulfate cannot be removed.

[0005] Although the existing electrostatic precipitator uses ultrasonic dust removal, the ultrasonic dust removal device is installed at the entrance of the dust removal chamber. However, the dust removal chamber is composed of several levels of electric fields connected in series. During on-site implementation, it can only have an obvious cleaning effect on the electric field near the entrance of the dust removal chamber (such as the first and second electric fields), and no obvious cleaning effect is seen on the subsequent electric fields (such as the third and fourth electric fields). Utility Model Content

[0006] The utility model aims to provide a sonic soot blowing device for an electrostatic precipitator, which can adjust the sonic wave intensity of different electric fields and has strong flexibility.

[0007] In order to achieve the above-mentioned purpose, the utility model provides a sonic soot blowing device for an electrostatic precipitator, the electrostatic precipitator comprising a dust removal chamber, wherein the dust removal chamber is provided with a plurality of electric fields connected in series, the sonic soot blowing device comprising a compressed gas source, a resonance cavity high sound intensity sound wave generator, a sound wave transmitting horn and an adjustable valve, a plurality of the resonance cavity high sound intensity sound wave generators are provided on the top of each of the electric fields, each of the resonance cavity high sound intensity sound wave generators is connected to the compressed gas source through a gas pipeline, the adjustable valve is connected to the input end of the resonance cavity high sound intensity sound wave generator, and the sound wave transmitting horn is connected to the output end of the resonance cavity high sound intensity sound wave generator.

[0008] As a preferred solution of the present invention, the compressed gas source is a compressed air storage tank.

[0009] As a preferred solution of the utility model, a plurality of the resonant cavity high sound intensity sound wave generators are evenly spaced and arranged at the top of the electric field.

[0010] As a preferred solution of the utility model, it also includes a controller connected to the adjustable valve.

[0011] Compared with the prior art, the acoustic wave soot blowing device for an electrostatic precipitator according to the embodiment of the utility model has the following beneficial effects:

[0012] The utility model provides a resonance cavity high sound intensity sound wave generator on the top of each electric field. The resonance cavity high sound intensity sound wave generator cooperates with a sound wave transmission horn to effectively act on dust accumulation, can effectively remove dust from all electric fields on the dust removal chamber, and avoid secondary dust. In addition, an adjustable valve for regulating the air intake amount of compressed gas is provided at the input end of the resonance cavity high sound intensity sound wave generator, so that the sound wave strength and start and stop of the resonance cavity high sound intensity sound wave generator can be realized through the opening and opening and closing of the adjustable valve, thereby realizing the regulation of the sound wave intensity of different electric fields, and having strong flexibility. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the technical solution of the embodiment of the utility model, the drawings of the embodiment will be briefly introduced below.

[0014] Figure 1 A schematic diagram of the structure of a sonic soot blowing device for an electrostatic precipitator provided by the utility model;

[0015] Figure 2 A layout diagram of a sonic soot blowing device for an electrostatic precipitator provided by the utility model;

[0016] In the figure, there is an electrostatic precipitator 1; an electric field 2; a compressed gas source 3; a gas pipeline 31; a resonance cavity high sound intensity sound wave generator 4; a sound wave transmission horn 5; an adjustable valve 6; and a controller 7. DETAILED DESCRIPTION

[0017] The following is a further detailed description of the specific implementation of the present invention in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0018] In the description of the present invention, it should be understood that the terms "upper", "lower", "left", "right", "front", "back", "top", "bottom", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they should not be understood as limitations on the present invention.

[0019] like Figure 1 to Figure 2 As shown, a sonic soot blowing device for an electrostatic precipitator in a preferred embodiment of the utility model, the electrostatic precipitator 1 includes a dust removal chamber, the dust removal chamber is provided with a plurality of electric fields 2 connected in series, the sonic soot blowing device includes a compressed gas source 3, a resonance cavity high sound intensity sound wave generator 4, a sound wave transmitting horn 5 and an adjustable valve 6, each of the electric fields 2 is provided with a plurality of the resonance cavity high sound intensity sound wave generators 4 on the top, each of the resonance cavity high sound intensity sound wave generators 4 is connected to the compressed gas source 3 through a gas pipeline 31, the adjustable valve 6 is connected to the input end of the resonance cavity high sound intensity sound wave generator 4, and the sound wave transmitting horn 5 is connected to the output end of the resonance cavity high sound intensity sound wave generator 4. Specifically, the compressed gas source 3 is a compressed air storage tank to reduce operating costs; the arrows in the figure are the paths for flue gas to enter and exit.

[0020] The utility model is provided with a resonance cavity high sound intensity sound wave generator 4 on the top of each electric field 2. The resonance cavity high sound intensity sound wave generator 4 cooperates with the sound wave transmission horn 5 to effectively act on the dust accumulation, can effectively remove the dust from all the electric fields 2 on the dust removal chamber, and avoid secondary dust. In addition, the input end of the resonance cavity high sound intensity sound wave generator 4 is provided with an adjustable valve 6 for regulating the air intake amount of the compressed gas. In this way, the sound wave strength and start and stop of the resonance cavity high sound intensity sound wave generator 4 can be realized by the opening and opening and closing of the adjustable valve 6, thereby realizing the regulation of the sound wave intensity of different electric fields 2, and having strong flexibility.

[0021] Exemplarily, a plurality of the resonant cavity high-intensity sound wave generators 4 are evenly spaced and arranged on the top of the electric field 2, so that each electric field 2 can be evenly deashed to avoid dead corners of deashing.

[0022] Specifically, the sonic soot blowing device for the electrostatic precipitator also includes a controller 7 connected to the adjustable valve 6. Through the controller 7, the number of opening and closing, the opening degree and the start-stop interval time of the adjustable valve 6 in each electric field 2 can be actually adjusted as needed, so as to adjust the sonic wave intensity and the start-stop interval time (operating time) of different electric fields 2, thereby ensuring good ash removal effect and strong flexibility, and effectively improving the dust removal efficiency of the electrostatic precipitator 1.

[0023] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "connected" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0024] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and substitutions can be made without departing from the technical principle of the present invention. These improvements and substitutions should also be regarded as the protection scope of the present invention.

Claims

1. A sonic soot blowing device for an electrostatic precipitator, the electrostatic precipitator comprising a dust removal chamber, wherein the dust removal chamber is provided with a plurality of series-connected electric fields, characterized in that: The sonic sootblowing device comprises a compressed gas source, a resonance cavity high sound intensity sound wave generator, a sound wave transmitting horn and an adjustable valve. A plurality of the resonance cavity high sound intensity sound wave generators are arranged on the top of each electric field. Each of the resonance cavity high sound intensity sound wave generators is connected to the compressed gas source through a gas pipeline. The adjustable valve is connected to the input end of the resonance cavity high sound intensity sound wave generator, and the sound wave transmitting horn is connected to the output end of the resonance cavity high sound intensity sound wave generator.

2. The sonic soot blowing device for an electrostatic precipitator according to claim 1, characterized in that: The compressed gas source is a compressed air storage tank.

3. The sonic soot blowing device for an electrostatic precipitator according to claim 1, characterized in that: A plurality of the resonant cavity high sound intensity sound wave generators are evenly spaced and arranged on the top of the electric field.

4. The sonic soot blowing device for an electrostatic precipitator according to claim 1, characterized in that: Also included is a controller connected to the adjustable valve.

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