Online switching system for high-frequency power supply fault of electric dust remover equipment

Abstract

The utility model discloses an electric dust remover equipment high-frequency power supply fault on-line switching system which comprises a control device, a standby high-frequency power supply, a standby high-frequency power supply matching high-voltage isolation switch cabinet, an electric field upper high-frequency power supply, an electric field upper high-frequency power supply matching high-voltage isolation switch cabinet, a high-voltage direct-current cable and electric dust remover equipment. The control device is connected with the standby high-frequency power supply through a communication cable and is connected with the high-frequency power supply on the electric field through a communication cable; the standby high-frequency power supply matched high-voltage isolation switch cabinet is connected with the high-frequency power supply matched high-voltage isolation switch cabinet on the electric field through a high-voltage direct-current cable; and the standby high-frequency power supply, the standby high-frequency power supply matched high-voltage isolation switch cabinet, the electric field upper high-frequency power supply and the electric field upper high-frequency power supply matched high-voltage isolation switch cabinet are all mounted on the top surface of the electric dust remover equipment. According to the utility model, the high-frequency power supply fault on-line switching is realized, and the operation stability of the electric dust remover equipment is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of power control, and particularly relates to an online switching system for high-frequency power failure of electric precipitator equipment. Background Art

[0002] At present, high-frequency power supplies are widely used in electrostatic precipitator equipment, providing a high-voltage electric field for the electrostatic precipitator equipment, so that the dust is charged and affected by the electric field, and is collected on the dust collecting electrode to achieve the effect of flue gas purification. As the core component of the electrostatic precipitator equipment, the high-frequency power supply plays a key role in the dust removal efficiency and standard operation of the electrostatic precipitator equipment. At present, the electrostatic precipitator equipment only uses one electric field to configure one high-frequency power supply, and no spare high-frequency power supply is configured. In the event of a failure in the high-frequency power supply, the method used is that the user contacts the power supply manufacturer to send maintenance personnel to repair or the user purchases power supply spare parts and replaces and repairs them by themselves. This processing method has the following problems: 1) The user contacts the power supply manufacturer to send maintenance personnel to repair. From the power supply manufacturer arranging for the maintenance personnel to travel, to the maintenance personnel on-site repair, the entire fault handling process is very slow. 1) If it is found that the main components are damaged during maintenance, it is necessary to wait for the power supply manufacturer to send out replacement components, which will take a longer time to deal with, causing the faulty high-frequency power supply to shut down for a long time, seriously affecting the normal operation of the electrostatic precipitator equipment and causing the flue gas emissions of the electrostatic precipitator equipment to exceed the standard; 2) If the high-frequency power supply in the front-end electric field of the precipitator equipment fails, the electric field will lose its dust removal function. If the power supply failure is not handled for a long time, the dust concentration in the rear-end electric field will be too high, resulting in corona occlusion, causing the operating parameters of the high-frequency power supply to change, causing a chain reaction, and causing the remaining high-frequency power supplies to fail, resulting in longer downtime, increased maintenance workload, and increased maintenance costs; 3) Because the maintenance of high-frequency power supplies is a highly professional and technical job, if the user purchases power supply spare parts for replacement and maintenance by themselves, the relevant maintenance personnel must undergo special training, otherwise improper maintenance may cause secondary power failures, causing damage to the power supply that cannot be repaired, and even endangering the personal safety of the maintenance personnel.

[0003] The Chinese patent with publication number CN204258433U discloses a remote power supply switching and temperature monitoring system through power network communication, including an operation terminal and a control terminal; the operation terminal is used to send equipment switching instructions; the control terminal is used to receive instructions sent by the operation terminal; the operation terminal is connected to the control terminal through the Internet and transmits instructions to the control terminal through the network. The power supply switching of this utility model is applicable to a single device, and has limited effect on improving the efficiency of re-starting the faulty equipment. Utility Model Content

[0004] The utility model provides an online switching system for high-frequency power failure of electrostatic precipitator equipment, aiming to solve the problems of slow maintenance speed, long downtime and serious impact on the normal operation of electrostatic precipitator equipment in the current technology for handling faulty high-frequency power supply.

[0005] In order to solve the above technical problems, the utility model proposes an online switching system for high-frequency power supply failure of electrostatic precipitator equipment, including a control device, a backup high-frequency power supply, a high-voltage isolating switch cabinet supporting the backup high-frequency power supply, a high-frequency power supply on the electric field, a high-voltage isolating switch cabinet supporting the high-frequency power supply on the electric field, a high-voltage DC cable and an electrostatic precipitator equipment. The control device is connected to the backup high-frequency power supply through a communication cable, and the control device is connected to the high-frequency power supply on the electric field through a communication cable. The high-voltage isolating switch cabinet supporting the backup high-frequency power supply is connected to the high-voltage isolating switch cabinet supporting the high-frequency power supply on the electric field through a high-voltage DC cable. The backup high-frequency power supply, the high-voltage isolating switch cabinet supporting the backup high-frequency power supply, the high-frequency power supply on the electric field, and the high-voltage isolating switch cabinet supporting the high-frequency power supply on the electric field are all installed on the top surface of the electrostatic precipitator equipment.

[0006] Furthermore, the control device receives and processes operating status signals of the backup high-frequency power supply and its supporting high-voltage isolating switch cabinet, the high-frequency power supplies on each electric field and its supporting high-voltage isolating switch cabinet.

[0007] Furthermore, the backup high-frequency power supply is connected to the high-voltage isolating switch cabinet supporting the backup high-frequency power supply through a bare wire, and the high-voltage isolating switch cabinet supporting the backup high-frequency power supply adopts a bipolar isolating switch. One end of the bipolar isolating switch is connected to the output end of the backup high-frequency power supply, that is, the backup high-frequency end; one end is connected to the high-voltage isolating switch cabinet supporting the high-frequency power supply on each electric field through a high-voltage DC cable, that is, the output end of the backup power supply; and one end is connected to the ground, that is, the backup grounding end.

[0008] Furthermore, the standby high frequency end has three ends, namely, a standby high frequency grounding, a standby high frequency suspension, and a standby power supply output; the standby power supply output end has two ends, namely, a standby power supply output grounding and a standby power supply output suspension.

[0009] Furthermore, the high-frequency power supply on the electric field is connected to the high-voltage isolating switch cabinet supporting the high-frequency power supply on the electric field through a bare wire, and the high-voltage isolating switch cabinet supporting the high-frequency power supply on the electric field adopts a four-point isolating switch. One end of the four-point isolating switch is connected to the output end of the high-frequency power supply on the electric field, that is, the high-frequency end of the electric field; one end is connected to the high-voltage isolating switch cabinet supporting the backup high-frequency power supply through a high-voltage DC cable, that is, the input end of the backup power supply; one end is connected to the dust collector electric field, that is, the electric field end; and one end is connected to the ground, that is, the electric field grounding end.

[0010] Furthermore, the high-frequency end of the electric field has three ends, namely, the high-frequency electric field is grounded, the high-frequency electric field is suspended, and the high-frequency electric field of the electric field; the backup power supply input end has three ends, namely, the backup power supply input electric field, the backup power supply input is suspended, and the backup power supply input is grounded; the electric field end has two ends, namely, the electric field is grounded and the electric field is suspended.

[0011] Compared with the prior art, the utility model has the following technical effects:

[0012] 1. The high-frequency power supply fault online switching system provided by the utility model switches the faulty high-frequency power supply to the standby high-frequency power supply. The maintenance time of the faulty high-frequency power supply will not be strictly limited. The user has ample time to contact the power supply manufacturer to send maintenance personnel for maintenance and wait for the replacement components to be delivered, which reduces the maintenance rush costs and ensures that the electrostatic precipitator equipment can quickly resume normal operation and ensure the dust removal flue gas emission standards.

[0013] 2. The high-frequency power supply fault online switching system is used to switch the faulty high-frequency power supply to the standby high-frequency power supply at a fast speed. The electric field flue gas of the faulty power supply can be timely dedusted, and the dust concentration of the remaining electric fields will not be affected, thus avoiding the risk of simultaneous failure of the remaining high-frequency power supplies.

[0014] 3. The high-frequency power failure online switching system is easy to operate and has a high safety factor. Only the user's electrical maintenance personnel can perform online switching operations. If the user wants to modify it by himself, there is also sufficient time for the power supply manufacturer to remotely guide and repair it in an orderly manner, avoiding improper maintenance by the user's electrical maintenance personnel due to lack of experience and eagerness to start the machine in a short period of time, causing equipment and safety accidents. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of the high-frequency power supply failure online switching system of the electrostatic precipitator equipment in which four high-frequency power supplies on the electric field share one standby high-frequency power supply according to the embodiment of the utility model;

[0016] Figure 2 This is a schematic diagram of the connection of four electric field high frequency power supplies sharing one standby high frequency power supply in an embodiment of the utility model;

[0017] Figure 3 It is a schematic diagram of the state of the high-voltage isolation switch cabinet supporting the standby high-frequency power supply when the high-frequency power supplies on the electric field of the embodiment of the utility model are operating normally;

[0018] Figure 4 It is a schematic diagram of the state of the high-voltage isolation switch cabinet supporting the high-frequency power supply on the electric field when the high-frequency power supply on the electric field of the embodiment of the utility model is operating normally;

[0019] Figure 5It is a schematic diagram of the state of a high-voltage isolation switch cabinet supporting a high-frequency power supply when a high-frequency power supply fails in an electric field according to an embodiment of the utility model;

[0020] Figure 6 It is a schematic diagram of the status of a high-voltage isolation switch cabinet supporting a standby high-frequency power supply when a high-frequency power supply fails in an electric field according to an embodiment of the utility model.

[0021] Figure numerals: 1, control device; 2, standby high-frequency power supply; 3, high-voltage isolating switch cabinet supporting standby high-frequency power supply; 4, high-frequency power supply on the electric field; 5, high-voltage isolating switch cabinet supporting high-frequency power supply on the electric field; 6, electrostatic precipitator; 7, bipolar isolating switch; 71, standby high-frequency end; 711, standby high-frequency grounding; 712, standby high-frequency suspension; 713, standby power supply output; 72, standby power supply output end; 721, standby power supply output grounding; 722, standby power supply output suspension Empty; 73. Spare grounding terminal; 8. Four-point isolating switch; 81. Electric field high-frequency terminal; 811. Electric field high-frequency grounding; 812. Electric field high-frequency suspension; 813. Electric field high-frequency electric field; 82. Spare power input terminal; 821. Spare power input electric field; 822. Spare power input suspension; 823. Spare power input grounding; 83. Electric field terminal; 831. Electric field grounding; 832. Electric field suspension; 84. Electric field grounding terminal; 9. Insulating porcelain bottle; 10. Outlet sheath tube. DETAILED DESCRIPTION

[0022] In order to make the purpose, technical solution and advantages of the utility model clearer, the technical solution of the utility model will be clearly and completely described below in combination with the specific embodiments of the application and with reference to the accompanying drawings.

[0023] The present invention can adopt a multiple-to-one online switching system for high-frequency power failure of electrostatic precipitator equipment, that is, multiple high-frequency power supplies share one backup high-frequency power supply, or a one-to-one online switching system for high-frequency power failure of electrostatic precipitator equipment, that is, each high-frequency power supply is equipped with a backup high-frequency power supply. Since the implementation methods of the multiple-to-one online switching system for high-frequency power failure of electrostatic precipitator equipment and the one-to-one online switching system for high-frequency power failure of electrostatic precipitator equipment are similar, and most of the electrostatic precipitators on the market are configured with four electric fields, this embodiment will be described in detail using the online switching system for high-frequency power failure of electrostatic precipitator equipment in which four high-frequency power supplies in the electric field share one backup high-frequency power supply. Figure 1 , Figure 2As shown, the utility model proposes an online switching system for high-frequency power supply failure of an electrostatic precipitator device, including a control device 1, a standby high-frequency power supply 2, a high-voltage isolating switch cabinet 3 supporting the standby high-frequency power supply, a high-frequency power supply on the electric field 4, a high-voltage isolating switch cabinet 5 supporting the high-frequency power supply on the electric field, a high-voltage DC cable and an electrostatic precipitator device 6. The control device 1 is located in the control room, and the control device 1 is connected to the standby high-frequency power supply 2 through a communication cable, and is connected to the high-frequency power supply on the electric field 4 through a communication cable. The high-voltage isolating switch cabinet 3 supporting the standby high-frequency power supply is connected to the high-voltage isolating switch cabinet 5 supporting the high-frequency power supply on the electric field through a high-voltage DC cable. The standby high-frequency power supply 2, the high-voltage isolating switch cabinet 3 supporting the standby high-frequency power supply, the high-frequency power supply on the electric field 4, and the high-voltage isolating switch cabinet 5 supporting the high-frequency power supply on the electric field are all installed on the surface of the electrostatic precipitator. Specifically, the withstand voltage and current carrying capacity of the high-voltage DC cable must be higher than the output voltage and current of the high-frequency power supply to ensure the stable operation of the online switching system for high-frequency power supply failure of the electrostatic precipitator device.

[0024] Furthermore, the control device 1 receives and processes the operating status signals of the backup high-frequency power supply 2 and the high-voltage isolating switch cabinet 3 supporting the backup high-frequency power supply, the high-frequency power supplies 4 on each electric field and the high-voltage isolating switch cabinet 5 supporting the high-frequency power supply on the electric field, and monitors and displays the operating parameters in real time.

[0025] Furthermore, the backup high-frequency power supply 2 is connected to the backup high-frequency power supply supporting high-voltage isolating switch cabinet 3 through a bare wire, and the bare wire passes through an insulating porcelain bottle 9, and the insulating porcelain bottle 9 is covered with an outlet sheath tube 10 to ensure the safety and reliability of power transmission. The backup high-frequency power supply supporting high-voltage isolating switch cabinet 3 adopts a bipolar isolating switch 7, and one end of the bipolar isolating switch 7 is connected to the output end of the backup high-frequency power supply, that is, the backup high-frequency end 71. The backup high-frequency end 71 has three ends, namely, a backup high-frequency grounding 711, a backup high-frequency suspension 712, and a backup power supply output 713; one end is connected to the high-frequency power supply supporting high-voltage isolating switch cabinet 5 on each electric field through a high-voltage DC cable 6, that is, the backup power supply output end 72, and the backup power supply output end 72 has two ends, namely, the backup power supply output grounding 721 and the backup power supply output suspension 722; one end is connected to the ground, that is, the backup grounding end 73. Refer to Figure 3 As shown, when the high-frequency power supplies on the electric field are operating normally, the standby high-frequency end 71 of the bipolar isolating switch 7 of the high-voltage isolating switch cabinet 3 supporting the standby high-frequency power supply is switched to the standby high-frequency ground 711, and the standby power supply output end 72 is switched to the standby power supply output ground 721.

[0026] Furthermore, the high-frequency power supply 4 on the electric field is connected to the high-voltage isolating switch cabinet 5 supporting the high-frequency power supply on the electric field through a bare wire, and the bare wire passes through an insulating porcelain bottle 9, and the insulating porcelain bottle 9 is covered with an outlet sheath tube 10. The high-frequency power supply on the electric field is equipped with a high-voltage isolating switch cabinet 5 that adopts a four-point isolating switch 8. One end of the four-point isolating switch 8 is connected to the output end of the high-frequency power supply on the electric field, that is, the high-frequency end 81 of the electric field. The high-frequency end 81 of the electric field has three ends, namely, the high-frequency grounding 811 of the electric field, the high-frequency suspension 812 of the electric field, and the high-frequency electric field 813 of the electric field; one end is connected to the high-frequency isolating switch cabinet 3 that supports the backup high-frequency power supply through a high-voltage DC cable, that is, the backup power supply input end 82, and the backup power supply input end 82 has three ends, namely, the backup power supply input electric field 821, the backup power supply input suspension 822, and the backup power supply input grounding 823; one end is connected to the dust collector electric field, that is, the electric field end 83, and the electric field end 83 has two ends, namely, the electric field grounding 831 and the electric field suspension 832; one end is connected to the ground, that is, the electric field grounding end 84. Refer to Figure 4 As shown, when the high-frequency power supply on the electric field is operating normally, the high-frequency end 81 of the four-point isolating switch 8 of the high-voltage isolating switch cabinet 5 supporting the high-frequency power supply on the electric field is switched to the high-frequency electric field 813, the backup power supply input end 82 is switched to the backup power supply input grounding 823, and the electric field end 83 is switched to the electric field suspension 832.

[0027] The working principle of the utility model is:

[0028] If a high-frequency power supply fails in the electric field, the control device 1 immediately issues a fault alarm. The user's electrical maintenance personnel can accurately determine which high-frequency power supply is faulty through the fault alarm content displayed on the control device, and can send a command on the control device to shut down the faulty high-frequency power supply to avoid secondary damage to the faulty high-frequency power supply. Figure 5 As shown, the electrical maintenance personnel only need to go to the site to switch the electric field high frequency end 81 of the corresponding electric field high frequency power supply supporting high voltage isolation switch cabinet 5 to the electric field high frequency grounding 811, and switch the backup power supply input end 82 to the backup power supply input electric field 821. Figure 6 As shown, the standby high-frequency end 71 of the high-voltage isolation switch cabinet 3 supporting the standby high-frequency power supply is switched to the standby power supply output 713, and the standby power supply output end 72 is switched to the standby power supply output suspension 722, and the standby high-frequency power supply is powered on to start running, and the high-frequency power supply fault online switching can be completed. After the switching is completed, the dust collector can operate normally, and the faulty high-frequency power supply also has ample time to contact the power supply manufacturer for maintenance.

[0029] The above is only a preferred embodiment of the present invention. It should be pointed out that a person skilled in the art can make several modifications and improvements without departing from the inventive concept of the present invention, and these modifications and improvements all fall within the protection scope of the present invention.

Claims

1. An online switching system for high-frequency power failure of electrostatic precipitator equipment, characterized in that: The invention comprises a control device (1), a standby high-frequency power supply (2), a high-voltage isolating switch cabinet (3) supporting the standby high-frequency power supply, a high-frequency power supply on an electric field (4), a high-voltage isolating switch cabinet (5) supporting the high-frequency power supply on an electric field, and an electrostatic precipitator device (6); the control device (1) is connected to the standby high-frequency power supply (2) via a communication cable, and the control device (1) is connected to the high-frequency power supply on an electric field (4) via a communication cable; the high-voltage isolating switch cabinet (3) supporting the standby high-frequency power supply is connected to the high-voltage isolating switch cabinet (5) supporting the high-frequency power supply on an electric field via a high-voltage direct current cable; the standby high-frequency power supply (2), the high-voltage isolating switch cabinet (3) supporting the standby high-frequency power supply, the high-frequency power supply on an electric field (4), and the high-voltage isolating switch cabinet (5) supporting the high-frequency power supply on an electric field are all installed on the top surface of the electrostatic precipitator device (6).

2. According to claim 1, the online switching system for high-frequency power failure of electrostatic precipitator equipment is characterized in that: The control device (1) receives and processes operation status signals of a backup high-frequency power supply (2) and a high-voltage isolating switch cabinet (3) supporting the backup high-frequency power supply, high-frequency power supplies (4) on each electric field and a high-voltage isolating switch cabinet (5) supporting the high-frequency power supply on the electric field.

3. The online switching system for high-frequency power failure of electrostatic precipitator equipment according to claim 1 is characterized in that: The standby high-frequency power supply (2) is connected to a high-voltage isolating switch cabinet (3) supporting the standby high-frequency power supply via a bare wire. The standby high-frequency power supply supporting high-voltage isolating switch cabinet (3) adopts a bipolar isolating switch (7). One end of the bipolar isolating switch (7) is connected to the output end of the standby high-frequency power supply, i.e., the standby high-frequency end (71); one end is connected to the high-voltage isolating switch cabinet (5) supporting the high-frequency power supply on each electric field via a high-voltage DC cable, i.e., the standby power supply output end (72); and one end is connected to ground, i.e., the standby grounding end (73).

4. The online switching system for high-frequency power failure of electrostatic precipitator equipment according to claim 3 is characterized in that: The standby high frequency end (71) has three ends, namely a standby high frequency grounding (711), a standby high frequency suspension (712), and a standby power supply output (713); the standby power supply output end (72) has two ends, namely a standby power supply output grounding (721) and a standby power supply output suspension (722).

5. The online switching system for high-frequency power failure of electrostatic precipitator equipment according to claim 1 is characterized in that: The high-frequency power supply (4) on the electric field is connected to a high-voltage isolating switch cabinet (5) supporting the high-frequency power supply on the electric field through a bare wire. The high-voltage isolating switch cabinet (5) supporting the high-frequency power supply on the electric field adopts a four-point isolating switch (8). One end of the four-point isolating switch (8) is connected to the output end of the high-frequency power supply on the electric field, i.e., the high-frequency end (81) of the electric field; one end is connected to the high-voltage isolating switch cabinet (3) supporting the backup high-frequency power supply through a high-voltage direct current cable, i.e., the backup power supply input end (82); one end is connected to the dust collector electric field, i.e., the electric field end (83); and one end is connected to grounding, i.e., the electric field grounding end (84).

6. The online switching system for high-frequency power failure of electrostatic precipitator equipment according to claim 5 is characterized in that: The electric field high frequency end (81) has three ends, namely, electric field high frequency grounding (811), electric field high frequency suspension (812), and electric field high frequency electric field (813); the backup power supply input end (82) has three ends, namely, backup power supply input electric field (821), backup power supply input suspension (822), and backup power supply input grounding (823); the electric field end (83) has two ends, namely, electric field grounding (831) and electric field suspension (832).

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