Ash removal device for flexible electrode and electric dust remover

Abstract

The utility model provides an ash removal device for a flexible electrode and an electric precipitator. The device comprises a sound wave amplifier, a sound wave generating valve, an electromagnetic valve, a filtering pressure reducing valve, a controller, a shut-off valve and a gas storage tank, and the sound wave amplifier communicates with one side of a wall plate of the electric precipitator; the controller adjusts the electromagnetic valve, the shut-off valve and the sound wave generating valve to control the gas storage tank to supply gas, so that the gas is supplied to the input port of the sound wave generating valve from the gas path output port through the filtering pressure reducing valve and the electromagnetic valve in sequence along the gas path; sound waves generated by the sound wave generating valve are transmitted into an electric precipitator pole plate area on the other side of the electric precipitator wall plate through the sound wave amplifier, so that flexible electrodes in the pole plate area generate self-vibration, and surface dust falls off after being loosened. According to the dust removal device, sound wave energy is adopted to act on the flexible electrode, mechanical-rapping-free self-cleaning of the flexible electrode is completed through self-vibration, the maintenance work requirement of the electric dust remover is effectively reduced, and the operation stability and reliability are improved.

Description

Technical Field

[0001] This application relates to the field of industrial dust removal technology, and in particular to a dust removal device and electrostatic precipitator for flexible electrodes. Background Technology

[0002] Currently, the common electrode cleaning method for electrostatic precipitators in the industrial field is as follows: the anode uses several anode plates arranged in a row, and the cathode uses needle-punched or barbed wire tensioned within a frame. To prevent deformation, the anode row and cathode frame must maintain sufficient rigidity and remain fixed. Therefore, after the electrostatic precipitator is put into operation, a large amount of dust will accumulate on the anode and cathode, requiring mechanical vibration or other auxiliary cleaning systems to ensure the long-term stable operation of the electrostatic precipitator. "CN201620108689.4 - A Flexible Connection Electrostatic Precipitator Cleaning Device" discloses a cleaning device that mainly utilizes the flexible connection between the electrode plates and wires of the electrostatic precipitator. Relying on the flexible connection between the two sections of the electrode plates, large displacement vibration is generated, automatically shaking off the adhering surface dust to achieve cleaning.

[0003] Because the mechanical rapping device is a rotating component located inside the electrostatic precipitator (ESP), which is an environment characterized by high dust and high temperature, the entire rapping system is prone to damage and difficult to repair. If the mechanical rapping system malfunctions, the ESP may experience corona sealing and other failures due to the difficulty in removing dust accumulation on the electrodes, requiring shutdown for maintenance.

[0004] This application provides a cleaning device that can achieve self-cleaning while solving the failure risks of mechanical rapping systems and improving the operational stability of electrostatic precipitators. Utility Model Content

[0005] To address the aforementioned issues, this application provides a dust removal device and an electrostatic precipitator for flexible electrodes, which can resolve the failure risks associated with mechanical rapping systems and improve the operational stability of the electrostatic precipitator.

[0006] In a first aspect, this application provides a dust removal device for flexible electrodes, the device comprising an acoustic amplifier (1), an acoustic generating valve (2), a solenoid valve (6), a filter pressure reducing valve (7), a controller (8), a shut-off valve (9), and an air storage tank (10), wherein the acoustic amplifier (1) is connected to one side of an electrostatic precipitator wall panel (3), and the electrostatic precipitator electrode plate area (11) on the other side of the electrostatic precipitator wall panel (3) is used to place at least one flexible electrode (5);

[0007] The controller (8) is used to adjust the solenoid valve (6), the shut-off valve (9) and the sound wave generating valve (2) to control the gas supply of the gas storage tank (10), so that the gas passes through the filter pressure reducing valve (7) and the solenoid valve (6) in sequence along the gas path, and is supplied from the gas path output port to the input port of the sound wave generating valve (2);

[0008] The sound wave generated by the sound wave generating valve (2) is amplified by the sound wave amplifier (1) and transmitted into the electrostatic precipitator electrode plate area (11) on the other side of the electrostatic precipitator wall panel (3). The flexible electrode (5) vibrates due to the reflection and disturbance of the sound wave, and the dust on the surface of the flexible electrode (5) is loosened and falls off.

[0009] In one possible implementation, the controller (8) adjusts the opening of the shut-off valve (9) of the gas storage tank (10) according to preset gas supply parameters, wherein the preset gas supply parameters correspond to a first preset pressure.

[0010] In one possible implementation, the controller (8) controls the opening / closing of the acoustic wave generating valve (2) according to preset time parameters, the preset time parameters including: cleaning cycle and cleaning duration; or,

[0011] The controller (8) controls the opening / closing of the solenoid valve (6) according to the preset time parameter, and controls the opening / closing of the sound wave generating valve (2) when gas is detected passing through the solenoid valve (6).

[0012] In one possible embodiment, the device further includes a pressure detection unit disposed in the air path between the solenoid valve (6) and the filter pressure reducing valve (7);

[0013] The controller (8) is connected to the pressure detection unit to obtain the pressure value returned by the pressure detection unit;

[0014] When the pressure value reaches the second preset pressure, the controller (8) controls the solenoid valve (6) to open.

[0015] In one possible implementation, the device is an auxiliary device installed on the electrostatic precipitator, which is assembled to the electrostatic precipitator via the electrostatic precipitator wall panel (3).

[0016] In one possible implementation, the flexible electrode (5) is fixed in the electrode plate area (11) of the electrostatic precipitator in the form of multiple flexible electrode sheets, with a preset gap between the multiple flexible electrode sheets.

[0017] In one possible implementation, a heat insulation layer (4) is provided on the outside of the acoustic amplifier (1).

[0018] In one possible implementation, the communication space between the acoustic amplifier (1) and the electrostatic precipitator wall panel (3) is covered with a polymer film layer.

[0019] In a second aspect, this application provides an electrostatic precipitator, including a flexible electrode and an electrostatic precipitator wall panel, and further including at least one dust removal device for the flexible electrode as described in any possible embodiment of the first aspect.

[0020] In one possible implementation, the location of the dust removal device includes:

[0021] On the electrostatic precipitator wall panel perpendicular to the flexible electrode, the outlet direction of the acoustic amplifier of the dust removal device is parallel to the surface of the flexible electrode; or...

[0022] On the wall panel of the electrostatic precipitator parallel to the flexible electrode, the outlet direction of the acoustic amplifier of the dust removal device is perpendicular to the surface of the flexible electrode; or, it is directly installed on the top of the electrostatic precipitator.

[0023] This application includes at least the following technical effects:

[0024] (1) The dust removal device uses acoustic energy to act on the flexible electrode, and completes the self-cleaning of the flexible electrode without mechanical vibration through self-vibration, which effectively reduces the maintenance work requirements of the electrostatic precipitator and improves the operational stability and reliability.

[0025] (2) The dust removal device can be used as an external accessory for the electrostatic precipitator. It is flexible in installation and highly applicable, which reduces the maintenance difficulty of the equipment itself, solves the problem of unstable operation of the electrostatic precipitator, and comprehensively improves the operational stability and reliability. Attached Figure Description

[0026] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0027] Figure 1 This is a schematic diagram of a dust removal device for flexible electrodes provided in an embodiment of this application;

[0028] Figure 2 This is a schematic diagram of a cleaning device for flexible electrodes provided in an embodiment of this application applied to an electrostatic precipitator;

[0029] Figure 3 This is a schematic diagram of an electrostatic precipitator provided in an embodiment of this application.

[0030] The reference numerals in the figure are respectively:

[0031] 1. Acoustic amplifier; 2. Acoustic generator valve; 3. Electrostatic precipitator wall panel; 4. Insulation layer; 5. Flexible electrode; 6. Solenoid valve; 7. Filter pressure reducing valve; 8. Controller; 9. Shut-off valve; 10. Gas storage tank; 11. Electrostatic precipitator electrode area;

[0032] A. A dust removal device for flexible electrodes; B. Electrostatic precipitator housing; C. Ash hopper.

[0033] The accompanying drawings illustrate specific embodiments of this application, which will be described in more detail below. These drawings and descriptions are not intended to limit the scope of the concept in any way, but rather to illustrate the concept of this application to those skilled in the art through reference to particular embodiments. Detailed Implementation

[0034] To further illustrate the various embodiments, this application provides accompanying drawings. These drawings are part of the disclosure of this application and are mainly used to illustrate the embodiments, and can be used in conjunction with the relevant descriptions in the specification to explain the operating principles of the embodiments. With reference to these drawings, those skilled in the art should be able to understand other possible implementations and the advantages of this application. Components in the drawings are not drawn to scale, and similar component symbols are generally used to represent similar components.

[0035] This application will now be further described in conjunction with the accompanying drawings and specific embodiments.

[0036] This application provides a dust removal device for flexible electrodes. Figure 1 This is a schematic diagram of a dust removal device for flexible electrodes provided in an embodiment of this application. The following is in conjunction with... Figure 1 This application describes the apparatus provided in the embodiments.

[0037] In this embodiment of the application, the device includes a sound wave amplifier 1, a sound wave generating valve 2, a solenoid valve 6, a filter pressure reducing valve 7, a controller 8, a shut-off valve 9, and a gas storage tank 10.

[0038] The acoustic amplifier 1 is connected to one side of the electrostatic precipitator wall panel 3. The electrostatic precipitator electrode plate area 11 on the other side of the electrostatic precipitator wall panel 3 is used to place at least one flexible electrode 5.

[0039] The controller 8 is used to regulate the solenoid valve 6, the shut-off valve 9 and the sound wave generating valve 2 to control the gas supply of the gas storage tank 10, so that the gas passes through the filter pressure reducing valve 7 and the solenoid valve 6 in sequence along the gas path, and is supplied from the gas path output port to the input port of the sound wave generating valve 2.

[0040] The sound wave generated by the sound wave generating valve 2 is amplified by the sound wave amplifier 1 and transmitted into the electrostatic precipitator electrode plate area 11 on the other side of the electrostatic precipitator wall panel 3. The reflection and disturbance of the sound wave cause the flexible electrode 5 to vibrate, and the dust on the surface of the flexible electrode 5 is loosened and falls off.

[0041] In this embodiment, the sound waves cause fatigue loosening of the dust on the surface of the flexible electrode, causing the dust to continue to loosen and fall off under the action of the shaking force generated by the disturbance and gravity, thus achieving self-cleaning.

[0042] In one possible implementation, the controller 8 is used to electrically control various valves in the pneumatic circuit of the device. The electrically controlled state may include at least one of the following:

[0043] 1. Electrically control the shut-off valve 9 of the gas storage tank 10: The controller 8 adjusts the opening degree of the shut-off valve 9 of the gas storage tank 10 according to the preset gas supply parameters, and the preset gas supply parameters correspond to the first preset pressure.

[0044] 2. Electrical control of the acoustic wave generating valve 2: The controller 8 controls the opening / closing of the acoustic wave generating valve 2 according to preset time parameters, including: cleaning cycle and cleaning duration; or,

[0045] 3. Control the solenoid valve 6: The controller 8 controls the opening / closing of the solenoid valve 6 according to the preset time parameters, and controls the opening / closing of the sound wave generating valve 2 when gas is detected passing through the solenoid valve 6.

[0046] 4. Achieve pressure-sensitive control. In one possible embodiment, the dust removal device further includes a pressure detection unit disposed in the air path between the solenoid valve 6 and the filter pressure reducing valve 7. The controller 8 is connected to the pressure detection unit, obtains the pressure value returned by the pressure detection unit, and thus controls the solenoid valve 6 to open when the pressure value reaches a second preset pressure.

[0047] In this embodiment, the acoustic wave generating valve 2 is supplied with compressed air by the air storage tank 10, which is depressurized by the filter pressure reducing valve 7, and then the output time and interval time of the compressed air are set by the solenoid valve 6 and the controller 8 to achieve periodic and timed dust cleaning.

[0048] In one possible implementation, the dust removal device provided in this application is an auxiliary device installed on an electrostatic precipitator, which can be assembled onto the electrostatic precipitator via the electrostatic precipitator wall panel 3.

[0049] The electrostatic precipitator wall panel 3 has through holes for assembling the cleaning device for flexible electrodes provided in this application embodiment.

[0050] For example, the through holes can be set at the top center of the wall panel, the lower edge of the wall panel, etc. The position of the through holes can be set according to the cleaning angle and the arrangement direction of the flexible electrodes, thereby fixing the direction of the sound waves output by the cleaning device.

[0051] For example, the through-hole can be circular, rectangular, or angular. Its diameter or length and width dimensions can be set according to the size of the acoustic amplifier 1 in the dust removal device. For example, if the acoustic amplifier 1 is horn-shaped, the diameter of the through-hole is set according to the diameter of its amplifying end circle (e.g., 10 mm); or, for example, if the through-hole is set as rectangular, the length and width of the through-hole (e.g., 10 mm long and 10 mm wide) are determined according to the outer rectangle of the amplifying end circle of the acoustic amplifier.

[0052] Optionally, the through-hole is an unplated through-hole (NPTH), primarily used for fixing or mounting external accessories, such as the cleaning device for flexible electrodes provided in this application. Optionally, the through-hole is a plated through-hole (PTH), with the hole wall plated with a metal layer, also supporting electrical connections. Optionally, the wall panel is made of aluminum alloy, and the edges of the through-hole are specially treated to prevent burrs.

[0053] The dust removal device provided in this application embodiment is a fixed device outside the electrostatic precipitator. It has no internal components of the electrostatic precipitator shell and no rotating devices, which reduces the maintenance workload of the electrostatic precipitator and improves its operational stability and reliability.

[0054] In one possible implementation, the flexible electrode 5 is fixed in the electrode plate area 11 of the electrostatic precipitator in the form of multiple flexible electrode sheets, with a preset gap between the multiple flexible electrode sheets.

[0055] Specifically, multiple flexible electrode plates are fixedly positioned within the electrostatic precipitator housing, with gaps between them. Sound waves, amplified by the sound wave amplifier 1, generate sound field energy, impacting the flexible electrode plates to produce resonance and induce self-vibration, thus achieving the effect of cleaning the electrode plates. The sound field energy generated by the sound waves impacts the accumulated dust adhering to the surface of the flexible electrode plates, causing the dust to loosen, reducing the stickiness of the dust particles, and enhancing the self-vibrating cleaning effect of the electrode plates.

[0056] Optionally, an insulation layer 4 is provided on the outside of the acoustic amplifier 1. The insulation layer is used to reduce the temperature drop of the outer amplifier and prevent dust accumulation and caking in the acoustic amplifier section.

[0057] In one possible implementation, the communication space between the acoustic amplifier 1 and the electrostatic precipitator wall panel 3 is covered with a polymer film layer.

[0058] Specifically, the connecting space refers to the through-hole, through which the acoustic amplifier 1 contacts the electrostatic precipitator electrode plate. The contact surface between the through-hole and the acoustic amplifier can be covered with a polymer film layer. The polymer film layer has good flexibility and is not easily broken, and also has a certain sound insulation performance, which can reduce the loss of sound waves during transmission to a certain extent, and of course, it can also reduce industrial noise. Optionally, the material of the above-mentioned polymer film can be: polyester film (PET), polyurethane foam (PU), etc.

[0059] Figure 2 This is a schematic diagram of a cleaning device for flexible electrodes provided in an embodiment of this application applied to an electrostatic precipitator, as shown below. Figure 2 As shown, at least one acoustic amplifier 1 is connected to the wall panel 3 of the electrostatic precipitator. The acoustic amplifier 1 is connected to the acoustic generating valve 2. The acoustic pressure is generated by the air supply from the air tank 10. The acoustic wave is transmitted to the electrode plate area 11 of the electrostatic precipitator through the acoustic amplifier 1. Through reflection and disturbance, the flexible electrode 5 vibrates. The filter pressure reducing valve 7 is used to reduce the pressure of the air supply to the air tank 10. The controller 8 is set to control the solenoid valve 6, acoustic generating valve 2, etc. in the air circuit. An insulation layer 4 is provided on the outside of the acoustic amplifier 1.

[0060] This application provides a dust removal device suitable for flexible self-vibrating electrodes. The device generates sound waves, which cause the flexible electrode to vibrate. This vibration loosens and dislodges dust particles, which then fall into the ash hopper, achieving self-cleaning. Furthermore, a controller sets the output time and interval of compressed air in the air circuit, enabling periodic and timed dust removal. Moreover, the dust removal device is a fixed external component of the dust collector, reducing maintenance workload and improving operational stability and reliability.

[0061] This application also provides an electrostatic precipitator, including a flexible electrode and an electrostatic precipitator wall panel, and at least one cleaning device for the flexible electrode provided in the above embodiments.

[0062] Among them, the cleaning device for flexible electrodes can be flexibly installed at various locations in the electrostatic precipitator.

[0063] For example, it can be installed on the wall panel of an electrostatic precipitator perpendicular to the flexible electrode, with the outlet direction of the acoustic amplifier of the dust removal device parallel to the surface of the flexible electrode.

[0064] For example, it can be arranged on the wall panel of the electrostatic precipitator parallel to the flexible electrode, and the outlet direction of the acoustic amplifier of the dust removal device is perpendicular to the surface of the flexible electrode.

[0065] For example, it can be directly installed on top of the electrostatic precipitator.

[0066] Figure 3 This is a schematic diagram of an electrostatic precipitator provided in an embodiment of this application, as shown below. Figure 3 As shown, A is a dust removal device for flexible electrodes; B is the electrostatic precipitator shell; and C is the ash hopper.

[0067] The device provided in this application is applicable to electrostatic precipitators containing flexible self-vibrating electrodes. The sound waves generated by the cleaning device are transmitted into the electrostatic precipitator and act on the flexible electrodes. The self-vibration of the flexible electrodes causes the dust to loosen and fall into the ash hopper under the influence of the shaking force generated by the disturbance and gravity, thus achieving self-cleaning. Furthermore, since the cleaning device is a fixed device outside the electrostatic precipitator, and there are no rotating devices inside the precipitator, the maintenance workload of the electrostatic precipitator can be effectively reduced, and the operational stability and reliability can be improved.

[0068] Unless otherwise defined, the technical or scientific terms used herein shall have the ordinary meaning understood by one of ordinary skill in the art to which this application pertains. The terms “first,” “second,” “third,” and similar terms used in this patent application specification and claims do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Similarly, the terms “an” or “a” and similar terms do not indicate a quantity limitation, but rather indicate the presence of at least one. The terms “comprising” or “including” and similar terms mean that the elements or objects preceding “comprising” or “including” encompass the elements or objects listed following “comprising” or “including” and their equivalents, and do not exclude other elements or objects. The terms “connected” or “linked” and similar terms are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. The terms “upper,” “lower,” “left,” and “right” are used only to indicate relative positional relationships; when the absolute position of the described objects changes, the relative positional relationship may also change accordingly.

[0069] Within the scope of these principles, any modifications, equivalent substitutions, or improvements made shall be included within the protection scope of this application. Although this application has been specifically shown and described in conjunction with preferred embodiments, those skilled in the art should understand that various changes in form and detail may be made to this application without departing from the spirit and scope of this application as defined by the appended claims, and all such changes shall be within the protection scope of this application.

Claims

1. A dust removal device for flexible electrodes, the device comprising a sound wave amplifier (1), a sound wave generating valve (2), a solenoid valve (6), a filter pressure reducing valve (7), a controller (8), a shut-off valve (9), and a gas storage tank (10), characterized in that: The acoustic amplifier (1) is connected to one side of the electrostatic precipitator wall panel (3), and the electrostatic precipitator electrode plate area (11) on the other side of the electrostatic precipitator wall panel (3) is used to place at least one flexible electrode (5). The controller (8) is used to adjust the solenoid valve (6), the shut-off valve (9) and the acoustic wave generating valve (2) to control the gas supply of the gas storage tank (10), so that the gas passes through the filter pressure reducing valve (7) and the solenoid valve (6) in sequence along the gas path, and is supplied from the gas path output port to the input port of the acoustic wave generating valve (2); The sound wave generated by the sound wave generating valve (2) is amplified by the sound wave amplifier (1) and transmitted into the electrostatic precipitator electrode plate area (11) on the other side of the electrostatic precipitator wall panel (3). The reflection and disturbance of the sound wave cause the flexible electrode (5) to vibrate, and the dust on the surface of the flexible electrode (5) is loosened and falls off. The device further includes: a pressure detection unit disposed in the air path between the solenoid valve (6) and the filter pressure reducing valve (7); the controller (8) is connected to the pressure detection unit to obtain the pressure value returned by the pressure detection unit; the controller (8) controls the solenoid valve (6) to open when the pressure value reaches a second preset pressure. The acoustic amplifier (1) is located to the side of the flexible electrode (5).

2. The dust removal device for flexible electrodes according to claim 1, characterized in that, The controller (8) adjusts the opening of the shut-off valve (9) of the gas storage tank (10) according to the preset gas supply parameters, and the preset gas supply parameters correspond to the first preset pressure.

3. The dust removal device for flexible electrodes according to claim 1, characterized in that, The controller (8) controls the opening / closing of the acoustic wave generating valve (2) according to preset time parameters, the preset time parameters including: cleaning cycle and cleaning duration; or, The controller (8) controls the opening / closing of the solenoid valve (6) according to the preset time parameter, and controls the opening / closing of the sound wave generating valve (2) when gas is detected passing through the solenoid valve (6).

4. The dust removal device for flexible electrodes according to claim 1, characterized in that, The device is an auxiliary device installed on the electrostatic precipitator, and is assembled to the electrostatic precipitator through the electrostatic precipitator wall panel (3).

5. The dust removal device for flexible electrodes according to claim 1, characterized in that, The flexible electrode (5) is fixed in the electrode plate area (11) of the electrostatic precipitator in the form of multiple flexible electrode sheets, and a preset gap is left between the multiple flexible electrode sheets.

6. The dust removal device for flexible electrodes according to claim 1, characterized in that, The acoustic amplifier (1) is provided with an insulation layer (4) on the outside.

7. The dust removal device for flexible electrodes according to claim 1, characterized in that, The space between the acoustic amplifier (1) and the electrode plate area (11) of the electrostatic precipitator is covered with a polymer film layer.

8. An electrostatic precipitator, comprising flexible electrodes and an electrostatic precipitator wall panel, characterized in that, It also includes at least one cleaning device for flexible electrodes as described in any one of claims 1-7.

9. The electrostatic precipitator according to claim 8, characterized in that, The location of the dust removal device includes: On the electrostatic precipitator wall panel perpendicular to the flexible electrode, the outlet direction of the acoustic amplifier of the dust removal device is parallel to the surface of the flexible electrode; or... On the electrostatic precipitator wall panel parallel to the flexible electrode, the outlet direction of the acoustic amplifier of the dust removal device is perpendicular to the surface of the flexible electrode.

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