Automatic adjusting device for electric precipitation high-frequency power supply

Abstract

The utility model relates to the technical field of power supply regulation, and discloses an automatic regulating device for an electric dust removal high-frequency power supply, which aims to solve the problems that dust removal voltages required by different dust concentrations are different, the output voltage of an electric dust remover needs to be manually regulated, the operation is troublesome, and the working efficiency is reduced. When the automatic regulating device for the electric precipitation high-frequency power supply is started, the dust concentration sensor can detect dust concentration and transmit a dust concentration numerical value into the DSP controller, and the DSP controller outputs a required numerical value signal into the three-phase alternating current contactor according to the dust concentration numerical value; the current is converted by the three-phase rectifier filter, the isolation driver, the full-bridge high-frequency inverter, the high-frequency boosting transformer and the high-frequency rectifier, so that the direct-current high voltage required by the electric dust remover is met, the electric dust remover can operate, and the power supply voltage input by the electric dust remover can be adjusted according to the dust concentration in the process.

Description

Technical Field

[0001] This utility model relates to the field of power supply regulation technology, and in particular to an automatic power supply regulation device for electrostatic precipitators. Background Technology

[0002] The high-frequency power supply automatic adjustment device for electrostatic precipitators is an intelligent device that integrates power electronics technology, automatic control algorithms, and dust concentration detection and feedback mechanisms. Its core function is to provide real-time and dynamic parameter optimization and adjustment for the high-frequency power supply system of electrostatic precipitators, which are key equipment used for industrial flue gas dust purification, so as to maintain the high dust removal efficiency and stable operation of the electrostatic precipitator system under different operating conditions and achieve the goal of energy saving and consumption reduction.

[0003] Currently, most electrostatic precipitators in thermal power plants use a hybrid electrostatic-baghouse system. The electrostatic precipitator is generally powered by a high-frequency power supply, which is manually controlled by inputting secondary current into the DCS to adjust the output. When the unit load increases or decreases, manual control often cannot keep up with the load changes and adjust the output of the high-frequency power supply. As a result, the high-frequency power supply of the electrostatic precipitator is insufficient when the unit load increases. This not only reduces the dust removal efficiency of the electrostatic precipitator but may also cause excessive emissions of particulate matter or increased dust pressure in the baghouse. Increased dust pressure in the baghouse will not only reduce the dust removal efficiency of the baghouse but also reduce the dust removal efficiency of the baghouse.

[0004] Regarding the above-mentioned and existing related technologies, the inventors believe that the following defects often exist: different dust concentrations require different dust removal voltages, and the output voltage of the electrostatic precipitator needs to be manually adjusted, which is troublesome and reduces work efficiency. Utility Model Content

[0005] The technical problem to be solved by this utility model is that the existing technology requires different dust removal voltages for different dust concentrations, and the output voltage of the electrostatic precipitator needs to be manually adjusted, which is troublesome and reduces work efficiency. To address this, we propose an automatic adjustment device for the high-frequency power supply of an electrostatic precipitator.

[0006] To achieve the above objectives, this application adopts the following technical solution: an automatic adjustment device for high-frequency power supply of electrostatic precipitator, including a housing, wherein a protective cover is fixedly connected inside the housing, and the high-voltage components and control circuit inside the protective cover are physically isolated and protected to prevent dust from contaminating the components;

[0007] A three-phase AC contactor is fixedly connected inside the protective cover. A three-phase rectifier filter is fixedly connected to one side of the three-phase AC contactor. A full-bridge high-frequency inverter is fixedly connected to one side of the three-phase rectifier filter. A high-frequency step-up transformer is fixedly connected to one side of the full-bridge high-frequency inverter. A high-frequency rectifier is fixedly connected to one side of the high-frequency step-up transformer. An isolation driver is fixedly connected to one side of the isolation driver. A DSP controller is fixedly connected to one side of the DSP controller. A dust concentration sensor is fixedly connected to one side of the high-frequency rectifier. A wire D is fixedly connected to one side of the high-frequency rectifier. An electrostatic precipitator is fixedly connected to one side of the electrostatic precipitator. Dust enters the electrostatic precipitator through the dust inlet, and the electrostatic precipitator begins dust removal.

[0008] Preferably, a connecting line A is fixedly connected to one side of the three-phase AC contactor, and the three-phase AC contactor is connected to a three-phase rectifier filter through the connecting line A. A connecting line B is fixedly connected to one side of the three-phase rectifier filter, and the three-phase rectifier filter is connected to a full-bridge high-frequency inverter through the connecting line B.

[0009] Preferably, a connecting line C is fixedly connected to one side of the full-bridge high-frequency inverter, the full-bridge high-frequency inverter is connected to the high-frequency step-up transformer through the connecting line C, a connecting line D is fixedly connected to one side of the high-frequency step-up transformer, and the high-frequency step-up transformer is connected to the high-frequency rectifier through the connecting line D.

[0010] Preferably, a connecting line E is fixedly connected to one side of the isolation driver, and the isolation driver is connected to the DSP controller through the connecting line E. A wire A is fixedly connected to one side of the DSP controller, and the DSP controller is connected to a three-phase AC contactor through the wire A.

[0011] Preferably, a wire B is fixedly connected to one side of the DSP controller, and the DSP controller is connected to the high-frequency rectifier through the wire B. A wire C is fixedly connected to one side of the DSP controller, and the DSP controller is connected to the dust concentration sensor through the wire C.

[0012] Preferably, a door is hinged to one side of the outer shell, and a ventilation opening is provided inside the outer shell. Opening the door allows for cleaning of the internal structure of the outer shell, reducing dust accumulation inside the shell. Dust enters the shell through the ventilation opening for dust removal.

[0013] The technical effects and advantages of this utility model are as follows:

[0014] In this invention, upon startup, the dust concentration sensor detects the dust concentration and transmits the dust concentration value to the DSP controller. Based on the dust concentration value, the DSP controller outputs the required numerical signal to the three-phase AC contactor. The current then passes through the three-phase rectifier filter, isolation driver, full-bridge high-frequency inverter, high-frequency step-up transformer, and high-frequency rectifier to achieve the required DC high voltage for the electrostatic precipitator, enabling it to operate. This process allows the input power voltage of the electrostatic precipitator to be adjusted according to the dust concentration. Attached Figure Description

[0015] The disclosure of this utility model is illustrated with reference to the accompanying drawings. It should be understood that the drawings are for illustrative purposes only and are not intended to limit the scope of protection of this utility model. In the drawings, the same reference numerals are used to refer to the same parts:

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0017] Figure 2 This is a schematic diagram of the internal structure of the outer shell of this utility model;

[0018] Figure 3 This is a schematic diagram of the three-phase AC contactor of this utility model;

[0019] Figure 4 This is a schematic diagram of the electrostatic precipitator structure of this utility model.

[0020] Legend: 1. Outer casing; 11. Door; 12. Ventilation opening; 13. Protective cover; 2. Three-phase AC contactor; 21. Connecting wire B; 3. Three-phase rectifier filter; 31. Connecting wire C; 4. Full-bridge high-frequency inverter; 41. Connecting wire D; 5. High-frequency rectifier; 51. Wire D; 6. Electrostatic precipitator; 61. Dust inlet; 7. Isolation driver; 71. Connecting wire A; 8. DSP controller; 81. Wire B; 82. Dust concentration sensor; 83. Wire C; 84. Wire A; 9. High-frequency step-up transformer; 91. Connecting wire E. Detailed Implementation

[0021] It is readily understood that, based on the technical solution of this utility model, those skilled in the art can propose various interchangeable structural methods and implementations without altering the essential spirit of this utility model. Therefore, the following detailed embodiments and accompanying drawings are merely illustrative descriptions of the technical solution of this utility model and should not be considered as the entirety of this utility model or as limitations or restrictions on the technical solution of this utility model.

[0022] Reference Figure 1As shown, this utility model provides a technical solution: an automatic adjustment device for high-frequency power supply of electrostatic precipitator, including a housing 1, a protective cover 13 fixedly connected inside the housing 1, and the high-voltage components and control circuit inside the protective cover 13 are physically isolated and protected to prevent dust from contaminating the components.

[0023] Reference Figures 1-4 As shown in this embodiment: a three-phase AC contactor 2 is fixedly connected inside the protective cover 13; a three-phase rectifier filter 3 is fixedly connected to one side of the three-phase AC contactor 2; a full-bridge high-frequency inverter 4 is fixedly connected to one side of the three-phase rectifier filter 3; a high-frequency step-up transformer 9 is fixedly connected to one side of the full-bridge high-frequency inverter 4; a high-frequency rectifier 5 is fixedly connected to one side of the high-frequency step-up transformer 9; an isolation driver 7 is fixedly connected to one side of the isolation driver 7; a DSP controller 8 is fixedly connected to one side of the DSP controller 8; a dust concentration sensor 82 is fixedly connected to one side of the high-frequency rectifier 5; a wire D51 is fixedly connected to one side of the high-frequency rectifier 5; an electrostatic precipitator 6 is fixedly connected to one side of the wire D51; a dust inlet 61 is opened on one side of the electrostatic precipitator 6; dust enters the interior of the electrostatic precipitator 6 through the dust inlet 61, and the electrostatic precipitator 6 begins dust removal.

[0024] Working Principle: Upon startup, the dust concentration sensor 82 detects the dust concentration and transmits the value to the DSP controller 8. Based on the dust concentration value, the DSP controller 8 outputs the required signal to the three-phase AC contactor 2. The three-phase AC contactor 2 acts as the switch for the entire device. At this time, the three-phase AC contactor 2 receives the signal and begins operation, transmitting the signal to the three-phase rectifier filter 3. The three-phase rectifier filter 3 converts the AC power into stable AC power, outputting a stable AC voltage. The isolation driver 7 is used for signal isolation and power amplification. It acts as a "bridge" connecting the DSP controller and the full-bridge high-frequency inverter 4, isolating the weak control signal output by the DSP controller 8 while amplifying the strong signal. The signal drives the power switching transistors of the full-bridge high-frequency inverter 4, causing the full-bridge high-frequency inverter 4 to turn on. At this time, after receiving the signal, the full-bridge high-frequency inverter 4 converts the low-frequency AC power provided by the three-phase rectifier filter 3 into high-frequency AC power through alternating conduction. Then, the AC power is sent to the high-frequency step-up transformer 9, which steps up the voltage to the required voltage value. At this time, the voltage is sent to the high-frequency rectifier 5, which converts the AC power sent by the high-frequency step-up transformer 9 into DC power, thereby meeting the DC high voltage required by the electrostatic precipitator 6, enabling the electrostatic precipitator 6 to operate. The above process can adjust the input power voltage of the electrostatic precipitator 6 according to the dust concentration.

[0025] Reference Figures 1-3As shown, in this implementation scheme: A connecting line A21 is fixedly connected to one side of the three-phase AC contactor 2, which is connected to the three-phase rectifier filter 3 via connecting line A21. A connecting line B31 is fixedly connected to one side of the three-phase rectifier filter 3, which is connected to the full-bridge high-frequency inverter 4 via connecting line B31. A connecting line C41 is fixedly connected to one side of the full-bridge high-frequency inverter 4, which is connected to the high-frequency step-up transformer 9 via connecting line C41. A connecting line D91 is fixedly connected to one side of the high-frequency step-up transformer 9, which is connected to the high-frequency rectifier 5 via connecting line D91. A connecting line E71 is fixedly connected to one side of the isolation driver 7. 7 is connected to the DSP controller 8 via connecting cable E71. DSP controller 8 is fixedly connected to wire A84 on one side, and DSP controller 8 is connected to the three-phase AC contactor 2 via wire A84. DSP controller 8 is fixedly connected to wire B81 on one side, and DSP controller 8 is connected to the high-frequency rectifier 5 via wire B81. DSP controller 8 is fixedly connected to wire C83 on one side, and DSP controller 8 is connected to the dust concentration sensor 82 via wire C83. A door 11 is hinged to one side of the housing 1. A ventilation opening 12 is provided inside the housing 1. Opening the door 11 allows for cleaning of the internal structure of the housing 1, reducing dust accumulation inside the housing 1. Dust enters the housing through the ventilation opening 12 for dust removal.

[0026] Working principle: Connecting wire A21 is used to realize the electrical connection between the three-phase AC contactor 2 and the three-phase rectifier filter 3; connecting wire B31 is used to transmit the processed current to the full-bridge high-frequency inverter 4; connecting wire C41 is used to connect the full-bridge high-frequency inverter 4 and the high-frequency step-up transformer 9; connecting wire D91 is used to transmit the stepped-up high-frequency AC power to the high-frequency rectifier 5; wire D51 is used to transmit DC power to the electrostatic precipitator 6; connecting wire E71 is used to connect the isolation driver 7 and the DSP controller 8; wire A84 is connected between the DSP controller 8 and the three-phase AC contactor 2 for transmitting power control signals; wire B81 is connected between the DSP controller 8 and the high-frequency rectifier 5 for acquiring output parameters and transmitting control commands; wire C83 is used to realize data transmission between the DSP controller 8 and the dust concentration sensor 82.

[0027] In the above structure, the three-phase AC contactor is model TGC1-1201, the three-phase rectifier filter is model ADT-63, the full-bridge high-frequency inverter is model EP15-0612 PLUS, the high-frequency rectifier is model GF11040-8, the electrostatic precipitator is model CDWY 30-1330-3 / 1, the isolation driver is model X3 Compact, the DSP controller is model TMS320C6000, and the dust concentration sensor is model PM1003. All of the above structures are existing technologies and will not be described in detail here.

[0028] The technical scope of this utility model is not limited to the content described above. Those skilled in the art can make various modifications and variations to the above embodiments without departing from the technical concept of this utility model, and all such modifications and variations should fall within the protection scope of this utility model.

Claims

1. An automatic adjustment device for high-frequency power supply of an electrostatic precipitator, characterized in that: Includes an outer casing, and a protective cover is provided inside the outer casing; The protective cover houses a three-phase AC contactor. A three-phase rectifier filter is located on one side of the three-phase AC contactor. A full-bridge high-frequency inverter is located on one side of the three-phase rectifier filter. A high-frequency step-up transformer is located on one side of the full-bridge high-frequency inverter. A high-frequency rectifier is located on one side of the high-frequency step-up transformer. An isolation driver is located on one side of the isolation driver. A DSP controller is located on one side of the DSP controller. A dust concentration sensor is located on one side of the DSP controller. A wire D is located on one side of the high-frequency rectifier. An electrostatic precipitator is located on one side of wire D. A dust inlet is located on one side of the electrostatic precipitator.

2. The automatic adjustment device for high-frequency power supply of electrostatic precipitator according to claim 1, characterized in that: A connecting line A is provided on one side of the three-phase AC contactor, and the three-phase AC contactor is connected to the three-phase rectifier filter through the connecting line A. A connecting line B is provided on one side of the three-phase rectifier filter, and the three-phase rectifier filter is connected to the full-bridge high-frequency inverter through the connecting line B.

3. The automatic adjustment device for high-frequency power supply of electrostatic precipitator according to claim 1, characterized in that: A connecting line C is provided on one side of the full-bridge high-frequency inverter, and the full-bridge high-frequency inverter is connected to the high-frequency step-up transformer through the connecting line C. A connecting line D is provided on one side of the high-frequency step-up transformer, and the high-frequency step-up transformer is connected to the high-frequency rectifier through the connecting line D.

4. The automatic adjustment device for high-frequency power supply of electrostatic precipitator according to claim 1, characterized in that: The isolation driver has a connecting line E on one side, and the isolation driver is connected to the DSP controller through the connecting line E. The DSP controller has a wire A on one side, and the DSP controller is connected to the three-phase AC contactor through the wire A.

5. The automatic adjustment device for high-frequency power supply of electrostatic precipitator according to claim 1, characterized in that: A wire B is provided on one side of the DSP controller, and the DSP controller is connected to the high-frequency rectifier through wire B. A wire C is provided on one side of the DSP controller, and the DSP controller is connected to the dust concentration sensor through wire C.

6. The automatic adjustment device for high-frequency power supply of electrostatic precipitator according to claim 1, characterized in that: A door is hinged to one side of the outer shell, and a ventilation opening is provided inside the outer shell.

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