An electrical control cabinet for high-frequency power supply of electrostatic precipitator

Abstract

The present invention relates to the technical field related to power distribution devices, and discloses an electrical control cabinet for a high-frequency power supply of an electrostatic precipitator. In order to solve the problem that a heat dissipation device cannot simultaneously ensure effective protection of electrical components in the cabinet, a power distributor for adjusting the switches of a corona electrode power supply and a dust collecting electrode power supply is placed in the power distribution cabinet. When dust-laden smoke enters an air intake horn, the rotation of the fan blades is detected to drive the driven fan blades to rotate synchronously. The airflow changes generated by the driven fan blades force the air intake bottom plate and the switch pressure plate to open, so that the external airflow flows in the direction of input from the bottom and output from the top of the power distribution cabinet, thereby ensuring that the airflow inside the power distribution cabinet can flow when the power distribution cabinet is working, thereby reducing the temperature of the working environment. When the power distribution cabinet stops working, the switch pressure plate and the air intake bottom plate are used to seal the power distribution cabinet to prevent the power distribution cabinet from being damaged by the external environment, and finally achieving the effect of timely heat dissipation of the power distribution cabinet.

Description

Technical Field

[0001] The present invention relates to the technical field related to power distribution devices, and in particular to an electrical control cabinet for a high-frequency power supply of an electrostatic precipitator. Background Art

[0002] An electrical control cabinet is a device specifically designed to control the switching of high-frequency power outputs. In electrostatic precipitators (ESPs), it plays a crucial role in effectively managing the functions of the corona discharge and dust collecting electrodes. Specifically, as dust-laden flue gas passes through the ESP, the electrical control cabinet ensures the proper functioning of the corona discharge electrodes, charging the dust particles in the flue gas. Subsequently, the charged dust particles are attracted by the electric field and deposited on the collecting electrodes, achieving the desired dust removal effect.

[0003] In practice, electrical control cabinets typically employ an active cooling design with slotted sides to mitigate the heat generated by the distribution cabinet during operation. However, this cooling method has a significant drawback: when the equipment stops operating, impurities such as dust and rainwater can easily enter the distribution cabinet through the slots. This not only pollutes the cabinet environment but can also directly damage components, creating serious safety hazards.

[0004] In view of this, there is an urgent need for a device that can both efficiently reduce temperature and effectively protect electrical distribution components in the cabinet. Summary of the Invention

[0005] The present invention proposes an electrical control cabinet designed specifically for the high-frequency power supply of an electrostatic precipitator. The control cabinet has the ability to dissipate heat in a timely and efficient manner, aiming to solve the problem in the prior art that the heat dissipation device cannot simultaneously ensure effective protection of the electrical components in the cabinet.

[0006] To achieve the above-mentioned purpose, the present invention adopts the following technical scheme: an electrical control cabinet for a high-frequency power supply of an electrostatic precipitator, comprising: a dust removal box, with an air intake horn and an exhaust horn respectively installed at both ends, and a corona electrode power supply and a dust collecting electrode power supply fixed on the top; a distribution cabinet, fixed to the side of the air intake horn, and a distributor installed inside the distribution cabinet; a starting switch, fixed on the inner side of the distribution cabinet, and a switch pressure plate located above the starting switch is mounted on the inner side of the distribution cabinet; a central shaft, movably mounted on the bottom of the distribution cabinet, one end of the central shaft is fixedly mounted with a driven fan blade located inside the distribution cabinet, and the other end is fixedly mounted with a detection fan blade located inside the air intake horn; an air intake bottom plate, movably mounted on the bottom of the distribution cabinet; and a cabinet cover, movably mounted on the surface of the distribution cabinet.

[0007] Furthermore, the input end of the distributor is connected to an external power supply, and the output end is electrically connected to the corona discharge electrode power supply and the dust collecting electrode power supply respectively through power supply cables.

[0008] Furthermore, a viewing window is provided on the surface of the cabinet cover.

[0009] Furthermore, an air relief groove is provided on the outside of the power distribution cabinet.

[0010] Furthermore, a guide groove is provided on the outer side of the power distribution cabinet body, and a guide bar that moves along the guide groove is provided on the inner side of the cabinet cover.

[0011] Furthermore, there is a guide sleeve seat on the side of the cabinet cover which is fastened by a limit clamp frame, and a detection piston and a limit lock sleeve are movably installed on the inside of the guide sleeve seat, and a detection spring is connected between the detection piston and the limit lock sleeve; a temperature-sensitive glass rod is connected between the limit lock sleeve and the guide sleeve seat, and a tension spring is connected between the outside of the limit lock sleeve and the switch pressure plate.

[0012] Furthermore, a damping hole is provided on the side of the guide sleeve.

[0013] Furthermore, a limit pressure rod located above the temperature-sensing glass rod is fixedly installed at the bottom of the switch pressure plate, and a stop arm is fixedly installed at the end of the detection piston.

[0014] Furthermore, an anti-drop hook is fixedly provided at the end of the barrier arm.

[0015] The present invention has the following beneficial effects:

[0016] This invention provides an electrical control cabinet for the high-frequency power supply of an electrostatic precipitator. It houses a distributor for regulating the power supply for the corona discharge electrode and the dust collecting electrode. These distributors are housed within the cabinet. To further improve heat dissipation efficiency and protect internal components, the invention innovatively incorporates a detection fan blade within the air intake horn. When dust-laden flue gas enters the air intake horn, the detection fan blade rotates, which in turn drives the driven fan blades to rotate synchronously.

[0017] The rotation of the driven fan blades not only promotes air circulation within the distribution cabinet, effectively reducing the heat generated by the distribution cabinet during operation, but also intelligently controls the opening of the air intake base and switch pressure plate through airflow changes. This design allows external air to flow smoothly, entering from the bottom of the distribution cabinet and exiting from the top, ensuring effective air circulation within the distribution cabinet during operation, significantly reducing the operating environment temperature.

[0018] Crucially, when the distribution cabinet stops operating, the switch plate and air intake base automatically close, tightly sealing the distribution cabinet and effectively isolating it from adverse external factors such as dust and moisture, thus preventing damage to the distribution cabinet due to environmental corrosion. This mechanism ensures optimal protection for the electrical control cabinet under various operating conditions, truly achieving timely, efficient, and intelligent heat dissipation, and enhancing the stability and durability of the entire electrostatic precipitator system. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments of the present disclosure and, together with the description, serve to explain the principles of the present disclosure.

[0020] The present invention can be more clearly understood from the following detailed description with reference to the accompanying drawings, in which:

[0021] Figure 1 This is a schematic diagram of the overall external three-dimensional structure of the present invention;

[0022] Figure 2 This is a schematic diagram of the three-dimensional structure of the air intake speaker in the present invention;

[0023] Figure 3 A schematic diagram of the installation position and structure between the air intake speaker and the power distribution cabinet in the present invention;

[0024] Figure 4 This is a schematic diagram of the internal three-dimensional structure of the power distribution cabinet in the present invention;

[0025] Figure 5 This is a schematic diagram of the internal planar structure of the power distribution cabinet in the present invention;

[0026] Figure 6 This is a schematic diagram of the start switch structure of the present invention;

[0027] Figure 7 A schematic diagram of the installation position and structure between the cabinet cover and the power distribution cabinet in the present invention;

[0028] Figure 8 This is a schematic diagram of the internal three-dimensional structure of the guide sleeve in the present invention;

[0029] Figure 9 Schematic diagram of the position and structure of the damping hole in the present invention;

[0030] Figure 10 Schematic diagram of the guide groove position and structure in the present invention.

[0031] In the figure: 1. Dust removal box; 2. Auger ash hopper; 3. Ash discharge motor; 4. Air intake horn; 5. Exhaust horn; 6. Corona electrode power supply; 7. Dust collecting electrode power supply; 8. Power supply cable; 9. Power distribution cabinet; 901. Guide groove; 10. Cabinet cover; 11. Viewing window; 12. Center axis; 13. Detection fan blade; 14. Driven fan blade; 15. Air intake bottom plate; 16. Damping hole; 17. Distributor; 18. Start switch; 19. Switch pressure plate; 20. Tension spring; 21. Air release groove; 22. Limit pressure rod; 23. Guide sleeve; 24. Temperature sensing glass rod; 25. Limit lock sleeve; 26. Stop arm; 27. Detection piston; 28. Detection spring. DETAILED DESCRIPTION

[0032] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0033] As a first embodiment, the present invention can autonomously determine and start the dust removal function and perform timely heat dissipation according to the input of the dust-laden airflow. Figure 1 It can be seen that, similar to the commonly used dust collectors on the market, the dust box 1 is fixed to the desired position using four legs at the bottom. The corona electrode power supply 6 and the dust collecting electrode power supply 7 are both fixed to the top of the dust box 1, thereby realizing the power supply of the corona electrode and the dust collecting electrode inside the dust box 1. It is ensured that the dust-laden airflow can be charged when passing through the corona electrode. The charged dust will move toward the dust collecting electrode under the influence of the electric field force. Finally, when the dust adsorbed on the dust collecting electrode falls due to factors such as vibration, it can be collected by the auger ash hopper 2 driven by the ash discharge motor 3 at the bottom and discharged to the outside.

[0034] One end of the dust box 1 is equipped with an air intake horn 4 fastened with a flange, and the other end is equipped with an exhaust horn 5. The dust-laden airflow conveyed by the fan can enter the interior of the dust box 1 through the air intake horn 4. After the dust is adsorbed inside the dust box 1, the purified airflow is discharged from the exhaust horn 5. Figure 1-Figure 4 It can be seen that the side of the air intake horn 4 is fastened with a distribution cabinet 9 connected by bolts, and the distributor 17 is fastened to the inside of the distribution cabinet 9 according to the bolts. The input end of the distributor 17 is connected to the external power supply, and the output end is electrically connected to the corona electrode power supply 6 and the dust collecting electrode power supply 7 respectively by the power supply cable 8, so that the switches of the corona electrode power supply 6 and the dust collecting electrode power supply 7 can be regulated by the distributor 17.

[0035] The start and stop of the distributor 17 is controlled by the start switch 18. Figure 5 and Figure 6 As shown, the starting switch 18 is fixed on the inner side of the distribution cabinet 9. Correspondingly, a switch pressure plate 19 is mounted on the inner side of the distribution cabinet 9 and is located above the starting switch 18. Under the action of the switch pressure plate 19's own gravity, the switch pressure plate 19 is forced to always move downward and press against the starting switch 18. The starting switch 18 is pressurized, causing the distributor 17 to be in a power-off state under normal circumstances.

[0036] The bottom of the power distribution cabinet 9 is movably provided with a central shaft 12. Figures 2 to 4It can be seen that one end of the central shaft 12 is fixedly mounted with a driven fan blade 14 located inside the distribution cabinet 9, and the other end of the central shaft 12 extends into the interior of the air intake horn 4, and a detection fan blade 13 is fixedly mounted on this end. When the dust-laden airflow flows from the air intake horn 4, the airflow will push the detection fan blade 13 to rotate synchronously. At the same time, the detection fan blade 13 forces the driven fan blade 14 to rotate synchronously through the central shaft 12. The rotating driven fan blade 14 can transport the airflow at the bottom of the distribution cabinet 9 into its inner cavity. More specifically, refer to Figure 1 and Figure 4 It can be seen that a cabinet cover 10 is movably installed on the surface of the distribution cabinet 9 to protect the distributor 17 inside the distribution cabinet 9. Not only that, a viewing window 11 is provided on the surface of the cabinet cover 10. The viewing window 11 is generally transparent glass, so that the working status of each component inside the distribution cabinet 9 can be accurately observed using the viewing window 11.

[0037] During work, dust-laden flue gas is conveyed by the conveying of blower fan so that it is conveyed inside dust removal box 1 from air intake horn 4, the airflow in air intake horn 4 can promote its rotation when passing through detection blade 13, and drive blade 14 is rotated synchronously under central shaft 12 transmission, the driven blade 14 of rotation can make the airflow at power distribution cabinet 9 bottom constantly conveyed in its inner cavity, and then force the pressure in power distribution cabinet 9 inner cavity to increase. After the airflow pressure in power distribution cabinet 9 inner cavity increases, switch pressing plate 19 can be promoted to rise synchronously, and then switch pressing plate 19 is relatively far away from starting switch 18. After starting switch 18 is released from suppression, distributor 17 is started, and power supply cable 8 is utilized to deliver the electric signal started to corona discharge electrode power supply 6 and dust collecting electrode power supply 7, so that it starts working. When airflow is driven by the corona discharge electrode of corona discharge electrode power supply 6, dust is charged. The charged dust moves toward the collecting electrode driven by the collecting electrode power supply 7 . Finally, the collecting electrode driven by the collecting electrode power supply 7 absorbs the dust, and the purified smoke is discharged from the exhaust horn 5 .

[0038] When there is no smoke input in the air intake horn 4, there will be no airflow in the air intake horn 4 to push the detection fan blade 13 to rotate. Similarly, the driven fan blade 14 will no longer rotate, and the high-pressure state of the airflow cannot be maintained inside the power distribution cabinet 9. Finally, the switch pressing plate 19 is downwardly moved by gravity and suppresses the start switch 18. After the start switch 18 is pressed, the distributor 17 will also stop working, and the power supply cable 8 will be used to transmit the stop signal to the corona discharge electrode power supply 6 and the dust collecting electrode power supply 7, so that the corona discharge electrode power supply 6 and the dust collecting electrode power supply 7 will stop working synchronously.

[0039] The outside of the power distribution cabinet 9 is provided with an air release groove 21. Figure 4As shown, when the driven fan blades 14 rotate, the airflow at the bottom enters the interior of the power distribution cabinet 9. After the airflow pressure increases, it pushes the switch pressure plate 19 upward until the switch pressure plate 19 passes over the air discharge groove 21. At this time, the airflow at the bottom of the power distribution cabinet 9 passes through the distributor 17 and is discharged from the air discharge groove 21. This not only allows the distributor 17 to start at the right time, but also allows the airflow to flow inside the power distribution cabinet 9, ensuring that the distributor 17 does not operate at high temperatures.

[0040] In order to realize dust prevention measures for the electrical appliances inside the distribution cabinet 9 when not working, Figure 3 and Figure 4 As can be clearly seen in the figure, the bottom of the distribution cabinet 9 is hinged with an air intake base plate 15. The air intake base plate 15 can only deflect up and down at the bottom of the distribution cabinet 9's inner cavity. When the driven fan blades 14 rotate, the airflow pressure between the air intake base plate 15 and the driven fan blades 14 decreases, forcing the air intake base plate 15 to deflect upward. The air intake base plate 15 transports external air from the bottom of the distribution cabinet 9 into its inner cavity, ensuring continuous airflow. When the driven fan blades 14 stop working, the air intake base plate 15 returns to a horizontal state under the action of gravity, thereby preventing external dust from being transported into the distribution cabinet 9.

[0041] From the above, it can be seen that, in the application process of the present embodiment 1, the detection fan blade 13 in the air intake horn 4 can be used to detect the input of the dust-laden airflow in real time, thereby ensuring that the corona discharge electrode power supply 6 and the dust collecting electrode power supply 7 can be switched on and off in a timely manner under the control of the distributor 17. Moreover, when the distributor 17 is working, the airflow pressure inside the distribution cabinet 9 is used to force the switch pressure plate 19 and the air intake bottom plate 15 to open, thereby achieving air flow inside the distribution cabinet 9, thereby achieving cooling of the distributor 17. When there is no smoke input in the air intake horn 4, the switch pressure plate 19 and the air intake bottom plate 15 will block the inner cavity of the distribution cabinet 9, thereby ensuring that when the distributor 17 is not working, the inner cavity of the distribution cabinet 9 will not communicate with the outside, thereby avoiding the influence of the external environment on the internal components of the distribution cabinet 9.

[0042] The second embodiment is a further improvement on the basis of the first embodiment. Figure 10 As shown, the outer side of the power distribution cabinet 9 is provided with a guide groove 901, and correspondingly, the inner side of the cabinet cover 10 is provided with a guide bar that moves along the guide groove 901, thereby limiting the cabinet cover 10 that is movably mounted on the power distribution cabinet 9 to only be able to move up and down. Figure 7-Figure 9 It can be seen that the side of the cabinet cover 10 has a guide sleeve 23 fastened by a limit clamp frame. Figure 7It can be clearly seen that the limit clamp frame is fastened with bolts and is located on one side of the distributor 17. A detection piston 27 and a limit lock sleeve 25 are movably installed inside the guide sleeve 23, and a detection spring 28 is connected between the detection piston 27 and the limit lock sleeve 25. Under the elastic force of the detection spring 28, the detection piston 27 and the limit lock sleeve 25 are always forced to have a tendency to move away from each other. Figure 8 and Figure 9 It can be clearly seen that the detection piston 27 is blocked by the inner side of the guide sleeve 23 and cannot be separated from the guide sleeve 23. Therefore, under the elastic force of the detection spring 28, the limit lock sleeve 25 has a tendency to move away from the detection piston 27. On this basis, a temperature-sensitive glass rod 24 is connected between the limit lock sleeve 25 and the guide sleeve 23. The temperature-sensitive glass rod 24 will generally break when the temperature is too high (such as used in fire sprinkler heads). Figure 7 and Figure 8 It can be seen that with the intervention of the temperature-sensitive glass rod 24, the limit lock sleeve 25 is forced to be inserted into the guide sleeve 23 and overcome the elastic force of the detection spring 28. In addition, a tension spring 20 is fastened between the outer side of the limit lock sleeve 25 and the switch pressure plate 19. Therefore, under the elastic force of the tension spring 20, the tension spring 20 is forced to pull the guide sleeve 23 to have an upward trend. The guide sleeve 23 uses the limit clamp frame to drive the guide bar on the cabinet cover 10 to move upward along the guide groove 901 until the guide bar moves up to the top limit of the guide groove 901. At this time, the temperature-sensitive glass rod 24 is on one side of the distributor 17; at the same time, the switch pressure plate 19 will enhance its downward trend under the elastic force of the tension spring 20, forcing the switch pressure plate 19 to always have a tendency to press on the start switch 18. In combination with the above, since the temperature-sensing glass rod 24 is located near the distributor 17, when the temperature of the distributor 17 is abnormally too high, such as a short circuit fire or other accidents, the rapidly rising temperature will reach the threshold value for the temperature-sensing glass rod 24 to break. After the temperature-sensing glass rod 24 breaks, it will no longer provide limiting support for the limit lock sleeve 25. Under the push of the elastic force of the detection spring 28, the limit lock sleeve 25 is forced to move away from the guide sleeve 23 until the limit lock sleeve 25 and the guide sleeve 23 are separated. Finally, since the cabinet cover 10 is no longer pulled upward by the tension spring 20, it will descend along the guide groove 901 through the guide bar under its own gravity, exposing the interior of the distribution cabinet 9, so that when a short circuit fire occurs in the distributor 17, external operators can promptly extinguish the fire of components inside the distribution cabinet 9.

[0043] Not only that, combined with Figure 9 It can be seen that the side of the guide sleeve 23 is provided with a damping hole 16, which enables the interior of the guide sleeve 23 to communicate with the external environment. Figure 8As shown, under the push of the detection spring 28, the detection piston 27 is forced to block the damping hole 16. As described in the first embodiment, when the driven fan blade 14 stops working, the air intake bottom plate 15 will close quickly under its own weight, and the switch pressure plate 19 will squeeze the air flow inside the distribution cabinet 9 again under its own weight and the elastic force of the tension spring 20. After the air flow pressure inside the distribution cabinet 9 increases, the detection piston 27 will overcome the elastic force of the detection spring 28, forcing the detection piston 27 to close. Cross the damping hole 16, so that the damping hole 16 connects the airflow of the external environment with the inner cavity of the distribution cabinet 9. Since the air in the inner cavity of the distribution cabinet 9 cannot quickly flow out of the damping hole 16 in a short time, the switch pressure plate 19 has a tendency to slowly descend, which delays the pressing of the start switch 18, ensuring that after the airflow input of the air intake horn 4 is stopped, the corona electrode power supply 6 and the dust collecting electrode power supply 7 will continue to work for a period of time, and purify the residual airflow inside the dust removal box 1 before stopping work.

[0044] On this basis, combined with Figure 4 、 Figure 7 and Figure 8 As can be seen in the figure, a limit pressure rod 22 located above the temperature-sensitive glass rod 24 is fixedly installed at the bottom of the switch pressure plate 19. At the same time, a stop arm 26 is fixedly installed on the end of the detection piston 27 away from the detection spring 28, and the stop arm 26 is located between the limit pressure rod 22 and the temperature-sensitive glass rod 24. Figure 8 It can be seen that an anti-slip hook is fixedly provided at the end of the blocking arm 26. The advantage of this design is that: during normal operation, the blocking arm 26 is located below the limiting pressure rod 22, and under the elastic force of the detection spring 28, the anti-slip hook is pressed against the limiting pressure rod 22. The detection piston 27 has not moved to the left extreme position of the guide sleeve 23 at this time, but the detection piston 27 has already blocked the damping hole 16 at this time; at the same time, the switch pressure plate 19 is located below the air release groove 21 under the elastic force of the tension spring 20, so that the upper part of the distribution cabinet 9 is blocked; the air intake bottom plate 15 blocks the lower part of the distribution cabinet 9 under its own gravity. It can be seen that the interior of the distribution cabinet 9 is in a relatively sealed state when it stops working, so that the external environment will not affect the internal components of the distribution cabinet 9.

[0045] When dust-laden airflow is input into the air intake horn 4, the detection blade 13 is driven to rotate. Under the transmission of the central shaft 12, the driven blade 14 rotates synchronously. The rotating driven blade 14 causes the airflow to be input from the bottom of the distribution cabinet 9 and output from the top. At this time, the air intake bottom plate 15 is opened due to the pressure reduction above, and the bottom of the switch pressure plate 19 rises due to the increase in airflow pressure and releases the pressure on the start switch 18. When the start switch 18 is released, the distributor 17 starts the corona electrode power supply 6 and the dust collecting electrode power supply 7 through the power supply cable 8 and performs dust removal. When the upward switch pressure plate 19 passes over the air release groove 21, the airflow is discharged from the air release groove 21, thereby realizing the continuous flow of airflow inside the distribution cabinet 9 and avoiding the excessive operating temperature of the distributor 17.

[0046] If the dust-laden airflow is no longer input into the air intake horn 4, the air intake bottom plate 15 will be closed under its own gravity. At the same time, when the switch pressure plate 19 moves downward and passes over the air discharge groove 21, the airflow in the inner cavity of the distribution cabinet 9 will be squeezed, causing the airflow pressure in the inner cavity of the distribution cabinet 9 to increase. Figure 8 As shown, the increase in the air flow pressure in the inner cavity of the distribution cabinet 9 will push the detection piston 27 to further suppress the detection spring 28. At the same time, the blocking arm 26 follows the detection piston 27 to move between the limit pressure rod 22 and the temperature-sensitive glass rod 24. When the detection piston 27 passes over the damping hole 16, the air flow in the inner cavity of the distribution cabinet 9 slowly flows out from the damping hole 16, thereby delaying the stop of the corona electrode power supply 6 and the dust collecting electrode power supply 7. When the limit pressure rod 22 descends and reaches the blocking arm 26, the switch pressure plate 19 simultaneously suppresses the start switch 18 to stop the distributor 17, and the limit pressure rod 22 blocked by the blocking arm 26 will not continue to move downward; if a sealing leakage occurs between the air inlet bottom plate 15 / switch pressure plate 19 and the distribution cabinet 9 during the downward process of the switch pressure plate 19, it will affect the sealing performance inside the distribution cabinet 9. To warn external operators, when a leak occurs, the airflow in the inner cavity of the distribution cabinet 9 will not push the detection piston 27 to compress the detection spring 28. Under the push of the detection spring 28, the detection piston 27 moves to the left limit inside the guide sleeve 23. At this time, the blocking arm 26 is away from the bottom of the limit pressure rod 22. When the switch pressure plate 19 moves under the elastic force of the tension spring 20, the limit pressure rod 22 on the switch pressure plate 19 is no longer blocked by the blocking arm 26. The limit pressure rod 22 will eventually hit the temperature-sensitive glass rod 24, thereby forcing the temperature-sensitive glass rod 24 to break by the impact. Afterwards, under the push of the detection spring 28, the limit lock sleeve 25 is forced to disengage from the guide sleeve 23, and finally the cabinet cover 10 is separated from the distribution cabinet 9. The opening of the distribution cabinet 9 warns the operator that the sealing performance of the distribution cabinet 9 has failed and needs to be repaired.

[0047] Moreover, if a fire occurs in the components in the power distribution cabinet 9 , the temperature-sensitive glass rod 24 will also break, thereby causing the cabinet cover 10 to separate from the power distribution cabinet 9 , thereby facilitating the operator to extinguish the fire inside the power distribution cabinet 9 .

Claims

1. An electrical control cabinet for high-frequency power supply of an electrostatic precipitator, characterized in that: include: A dust removal box (1) is provided with an air intake horn (4) and an exhaust horn (5) at both ends, and a corona electrode power supply (6) and a dust collecting electrode power supply (7) are fixed on the top; A power distribution cabinet (9) is fixed to the side of the air intake speaker (4), and a power distribution device (17) is installed inside the power distribution cabinet (9); A start switch (18) is fixed on the inner side of the power distribution cabinet (9), and a switch pressure plate (19) is mounted on the inner side of the power distribution cabinet (9) and is located above the start switch (18); A central shaft (12) is movably mounted on the bottom of the power distribution cabinet (9), one end of the central shaft (12) is fixedly mounted with a driven fan blade (14) located inside the power distribution cabinet (9), and the other end is fixedly mounted with a detection fan blade (13) located inside the air intake horn (4); An air intake base plate (15) is movably mounted on the bottom of the power distribution cabinet (9); A cabinet cover (10) is movably mounted on the surface of the power distribution cabinet (9); When the airflow pressure in the inner cavity of the power distribution cabinet (9) increases, the switch pressing plate (19) is pushed upward synchronously, thereby causing the switch pressing plate (19) to be relatively away from the starting switch (18). When the starting switch (18) is released, the distributor (17) is started, and the power supply cable (8) transmits the starting electrical signal to the corona electrode power supply (6) and the dust collecting electrode power supply (7), so that they start working and perform electrostatic precipitator. The switch pressing plate (19) is moved downward by gravity and presses the start switch (18). When the start switch (18) is pressed, the distributor (17) will also stop working, and the power supply cable (8) will transmit the stop signal to the corona electrode power supply (6) and the dust collecting electrode power supply (7), so that the corona electrode power supply (6) and the dust collecting electrode power supply (7) will stop working synchronously; the switch pressing plate (19) and the air inlet bottom plate (15) will block the inner cavity of the distribution cabinet (9) to prevent the external environment from affecting the internal components of the distribution cabinet (9).

2. The electrical control cabinet for high-frequency power supply of electrostatic precipitator according to claim 1, characterized in that: The input end of the distributor (17) is connected to an external power supply, and the output end is electrically connected to the corona discharge electrode power supply (6) and the dust collecting electrode power supply (7) respectively through a power supply cable (8).

3. The electrical control cabinet for high-frequency power supply of electrostatic precipitator according to claim 1, characterized in that: A viewing window (11) is provided on the surface of the cabinet cover (10).

4. The electrical control cabinet for high-frequency power supply of an electrostatic precipitator according to claim 1, characterized in that: An air relief groove (21) is provided on the outside of the power distribution cabinet (9).

5. The electrical control cabinet for high-frequency power supply of electrostatic precipitator according to claim 1, characterized in that: A guide groove (901) is provided on the outside of the power distribution cabinet (9), and a guide strip moving along the guide groove (901) is provided on the inside of the cabinet cover (10).

6. The electrical control cabinet for high-frequency power supply of an electrostatic precipitator according to any one of claims 1 or 5, characterized in that: The side of the cabinet cover (10) is provided with a guide sleeve (23) fastened by a limit clamp frame, a detection piston (27) and a limit lock sleeve (25) are movably mounted inside the guide sleeve (23), and a detection spring (28) is connected between the detection piston (27) and the limit lock sleeve (25); A temperature-sensitive glass rod (24) is connected between the limit lock sleeve (25) and the guide sleeve seat (23), and a tension spring (20) is connected between the outer side of the limit lock sleeve (25) and the switch pressure plate (19).

7. The electrical control cabinet for high-frequency power supply of an electrostatic precipitator according to claim 6, characterized in that: A damping hole (16) is provided on the side of the guide sleeve (23).

8. The electrical control cabinet for high-frequency power supply of an electrostatic precipitator according to claim 7, characterized in that: A limit pressure rod (22) located above the temperature-sensing glass rod (24) is fixedly mounted on the bottom of the switch pressure plate (19), and a stop arm (26) is fixedly mounted on the end of the detection piston (27).

9. The electrical control cabinet for high-frequency power supply of an electrostatic precipitator according to claim 8, characterized in that: An anti-drop hook is fixedly provided at the end of the barrier arm (26).

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