A desulfurization electrical system

Abstract

The present invention discloses a desulfurization electrical system, which relates to the field of desulfurization electrical technology and includes a power supply cabinet, an amorphous alloy transformer, a frequency converter, an electric energy meter, and a DCS distributed controller. The power input terminal of the power supply cabinet is connected to the amorphous alloy transformer. The desulfurization electrical system is provided with an operating mechanism linked to a limit mechanism. Pulling the handle drives the C-shaped rod on the slider to synchronously squeeze the two swing arms. When the adjustment column rotates once around the rotating pin, the top block above the gear seat squeezes the adjustment column to perform a secondary deflection, ensuring that the tail end of the traction arm deflects upward. At the same time, the hook at the front end of the traction arm and the docking piece complete the decoupling restriction. At this time, it is convenient to quickly separate the frequency converter and the base, allowing the frequency converter to be quickly disassembled for inspection and maintenance, conveniently shortening the maintenance time of the frequency converter and enabling the frequency converter to quickly perform frequency conversion control on the desulfurization electrical equipment after timely maintenance.

Description

Technical Field

[0001] The present invention relates to the field of desulfurization electrical technology, in particular to a desulfurization electrical system. Background Art

[0002] Desulfurization, referring to the removal of sulfur from fuel before combustion and flue gas emissions, is a key technical measure for preventing and controlling air pollution. Traditional desulfurization system equipment selection, such as using a commercial power supply for the circulation pump, a multi-stage centrifugal blower or Roots blower for the oxidation blower, and a Class II silicon steel transformer with high efficiency, generally results in high energy consumption and operating costs.

[0003] According to Chinese patent publication number CN215006364U, a desulfurization electrical control system is disclosed. Through a DCS control device, the bag dust collector, solenoid valve, inverter, motor, lime milk tank, and urea tank in the desulfurization system are remotely and centrally controlled. This allows the status of each desulfurization electrical device to be fully reflected in the DCS configuration, significantly improving the automation level of the desulfurization electrical equipment.

[0004] According to Chinese patent publication number CN115933559A, a desulfurization variable frequency centrifugal oxidation fan energy-saving optimization control system and method are disclosed. This invention can monitor the desulfurization slurry oxidation performance indicators online and significantly reduce the oxidation fan energy consumption by intelligently adjusting the desulfurization variable frequency centrifugal oxidation fan frequency.

[0005] When the above two technical solutions are used, both adopt frequency conversion control to drive the electrical equipment used for desulfurization. The operation of the electrical system must be controlled by the frequency converter to dominate the speed regulation of the electrical equipment. However, the frequency converter may fail or be damaged during the operation of the entire electrical system. Conventional frequency converters usually use snap-on connections during installation or disassembly, but this snap-on connection method does not allow staff to quickly inspect and maintain the frequency converter. Summary of the Invention

[0006] The object of the present invention is to provide a desulfurization electrical system to solve the problems raised by the above background technology.

[0007] To achieve the above object, the present invention provides the following technical solution: a desulfurization electrical system, including a power cabinet, an amorphous alloy transformer, a frequency converter, an electric energy meter and a DCS distributed controller,

[0008] The power input end of the power supply cabinet is connected to the amorphous alloy transformer. The power supply cabinet is internally installed with a frequency converter, an electric energy meter, a DCS distributed controller, a PLC controller and an acquisition terminal. The DCS distributed controller is communicatively connected to the PLC controller, and the PLC controller is electrically connected to the frequency converter. A base mounted on the power supply cabinet is provided on one side of the frequency converter, and docking pieces are symmetrically fixed on the outer edge of the base. An operating mechanism is provided on the frequency converter, and the operating mechanism includes an outer shell and an inner shell mounted on the side of the frequency converter by screws. Adjacent sides of the outer shell and the inner shell are provided with reserved grooves, and a limiting mechanism for limiting the docking piece is provided in the reserved groove;

[0009] The outer side surface of the outer shell is provided with a T-shaped groove in parallel, and the outer shell is slidably connected to the slider through the T-shaped groove, and a strip-shaped opening is provided on the surface of the slider, and a C-shaped rod is inserted through one side of the slider. The outer side of the outer shell is rotatably connected to a handle, and a cylinder is fixed to the side of the handle, and the handle is inserted into the strip opening on the surface of the slider through the cylinder. The limiting mechanism includes a rotating pin movably connected between the outer shell and the inner shell, and a swing arm is fixed to one end of the rotating pin extending through the outer shell, and one end of the swing arm is movably connected to the end of the C-shaped rod.

[0010] Preferably, the power output lines of the power cabinet are respectively connected to an active filtering device for suppressing harmonics and a reactive compensation device for improving the power factor. The output side of the reactive compensation device is connected to a capacitor group. The power cabinet and the active filtering device are respectively connected to the induced draft fan, oxidation fan, cooling pump and slurry circulation pump of the desulfurization tower through power lines.

[0011] Preferably, a track is installed in the reserved grooves of the outer shell and the inner shell, a gear seat is slidably connected to the track, racks are provided on both sides of the gear seat, a top block is fixed on the upper side of the gear seat, and a spring a is connected between the gear seat and the track.

[0012] Preferably, the middle part of the rotating pin is movably connected to the adjusting column through a rotating shaft, and the axis of the rotating shaft is parallel to the center line of the adjusting column. An anti-deflection gear disk is fixed on the side of the rotating pin close to the adjusting column, and the teeth on the outer edge of the anti-deflection gear disk are engaged with the rack of the gear seat. A driving block is welded to the outer side of the adjusting column, and the driving block is movably connected to the traction arm.

[0013] Preferably, a groove is provided at the end of the traction arm away from the driving block, and a hook is rotatably connected inside the groove, a cross bar is fixed to the inner wall of the groove, a guide block and a spring b are sleeved on the outer side of the cross bar, and the two ends of the spring b are respectively fixed to the inner wall of the groove and the guide block, and a movable rod is connected between the upper end of the guide block and the hook.

[0014] Preferably, the outer edge of the hook is an arc-shaped structure, and the hooks are distributed at equal intervals on one end of the traction arm, and a movable pin is welded to the lower side of one end of the traction arm close to the groove.

[0015] Preferably, a slide groove is provided on the inner wall of the reserved groove of the outer shell and the inner shell, and the slide groove is composed of an inclined slide and a horizontal slide connected to each other, and the movable pin is plugged into the slide groove.

[0016] Preferably, a heat dissipation assembly is installed above the inverter, and the heat dissipation assembly is composed of a fan and a heat sink. A hanging rod is fixed to the upper edge of the inverter near the heat dissipation assembly, and a socket is provided on the top edge of the base for docking with the hanging rod.

[0017] Preferably, a display screen is installed on the door of the power cabinet, the motors of the induced draft fan, oxidation fan, cooling pump and slurry circulation pump are all controlled by variable frequency speed regulation, the DCS distributed controller is connected to the display screen, and the electricity meter is used to monitor the electricity consumption of the load on the desulfurization tower.

[0018] Preferably, the DCS distributed controller is connected to the acquisition terminal via a data line, and the input end of the acquisition terminal is connected to the temperature sensor of the slurry pool at the bottom of the desulfurization tower.

[0019] Compared with the prior art, the present invention has the following beneficial effects:

[0020] 1. The desulfurization electrical system is equipped with an operating mechanism linked to a limit mechanism. Pulling the handle drives the C-shaped rod on the slider to synchronously squeeze the two swing arms. When the adjustment column rotates once around the rotating pin, the top block above the gear seat squeezes the adjustment column for a second deflection, ensuring that the tail end of the traction arm deflects upward. At the same time, the hook at the front end of the traction arm is unhooked from the docking piece. This allows for quick separation of the inverter and the base, allowing the inverter to be quickly disassembled for inspection and maintenance, shortening the inverter maintenance time and enabling the inverter to quickly perform frequency conversion control on the desulfurization electrical equipment after timely maintenance.

[0021] 2. The desulfurization electrical system pushes the inverter toward the base, and the front end of the docking piece squeezes the hook, so that the hook squeezes the guide block through the movable rod to stretch the spring b. At this time, the rotating hook will move away from the upper wall of the reserved groove and rotate into the groove of the traction arm. When the docking piece is inserted into the reserved groove of the outer shell and the inner shell, the hook moves up through the reset rebound and locks the docking piece, ensuring that the inverter and the base can be installed quickly and stably, and ensuring that the inverter can adjust the speed of the motor according to the load demand after stable installation, so that the induced draft fan, oxidation fan, cooling pump and slurry circulation pump used in the desulfurization tower can operate more energy-efficiently. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a schematic diagram of the electrical distribution structure of the present invention;

[0023] Figure 2 This is a three-dimensional exploded schematic diagram of the power cabinet of the present invention;

[0024] Figure 3 Schematic diagram of the system structure of the present invention;

[0025] Figure 4 It is a schematic diagram of the circuit structure of the present invention;

[0026] Figure 5 Schematic diagram of the three-dimensional structure of the frequency converter of the present invention;

[0027] Figure 6 This is a schematic diagram of the three-dimensional exploded structure of the frequency converter of the present invention;

[0028] Figure 7 This is a schematic diagram of the three-dimensional structure of the operating mechanism of the present invention driving the limiting mechanism and the base locking hook;

[0029] Figure 8 This is a schematic diagram of the three-dimensional structure of the operating mechanism of the present invention driving the limiting mechanism to decouple from the base;

[0030] Figure 9 It is a side view structural diagram of the outer shell and the base of the present invention;

[0031] Figure 10 It is a schematic diagram of a first three-dimensional exploded structure of the operating mechanism of the present invention;

[0032] Figure 11 A second three-dimensional exploded structural diagram of the operating mechanism of the present invention;

[0033] Figure 12 It is a schematic diagram of the three-dimensional structure of the limiting mechanism and the locking hook of the docking piece of the present invention;

[0034] Figure 13 It is a schematic diagram of the three-dimensional structure of the limit mechanism of the present invention being decoupled from the docking member;

[0035] Figure 14 It is a schematic diagram of the cross-section structure of the traction arm of the present invention.

[0036] Figure 1: Power supply cabinet; 2: Amorphous alloy transformer; 3: Active filter device; 4: Reactive power compensation device; 5: Capacitor bank; 6: Induced draft fan; 7: Oxidation fan; 8: Cooling pump; 9: Slurry circulation pump; 10: Frequency converter; 101: Heat dissipation assembly; 102: Base; 103: Hanging rod; 104: Card holder; 105: Docking piece; 11: Display screen; 12: Electric energy meter; 13: DCS distributed controller; 14: PLC controller; 15: Data acquisition terminal; 16: Operating mechanism; 161: Housing Body; 162, inner shell; 163, slider; 164, C-shaped rod; 165, handle; 166, swing arm; 167, slide; 17, limit mechanism; 171, track; 172, gear seat; 173, top block; 174, spring a; 175, rotating pin; 176, anti-deflection gear disc; 177, adjusting column; 178, driving block; 179, traction arm; 1710, hook; 1711, movable rod; 1712, guide block; 1713, cross bar; 1714, spring b; 1715, moving pin. DETAILED DESCRIPTION

[0037] 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. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0038] See also Figure 1-Figure 3 、 Figure 5 and Figure 6The present invention provides a technical solution: a desulfurization electrical system, including a power supply cabinet 1, an amorphous alloy transformer 2, a frequency converter 10, an electric energy meter 12 and a DCS distributed controller 13. The power input end of the power supply cabinet 1 is connected to the amorphous alloy transformer 2. The power supply cabinet 1 is internally installed with the frequency converter 10, the electric energy meter 12, the DCS distributed controller 13, the PLC controller 14 and the acquisition terminal 15. The DCS distributed controller 13 is communicatively connected with the PLC controller 14, and the PLC controller 14 is electrically connected with the frequency converter 10. A base 102 installed with the power supply cabinet 1 is provided on one side of the frequency converter 10. The outer edge of the base 102 is symmetrically fixed with a docking piece 105. The frequency converter 10 is provided with an operating The operating mechanism 16 includes an outer shell 161 and an inner shell 162 installed on the side of the inverter 10 by screws. The adjacent sides of the outer shell 161 and the inner shell 162 are provided with reserved grooves, and the reserved grooves are provided with a limiting mechanism 17 for limiting the docking member 105. A heat dissipation component 101 is installed above the inverter 10. The heat dissipation component 101 consists of a fan and a heat sink. By starting the fan of the heat dissipation component 101, the air flows rapidly along the distribution direction of the heat sink, thereby quickly cooling the inverter 10. A hanging rod 103 is fixed to the upper edge of the inverter 10 near the heat dissipation component 101, and a socket 104 docking with the hanging rod 103 is provided on the top edge of the base 102.

[0039] During specific implementation, the base 102 is pre-installed inside the power cabinet 1 by screws, and then the hanging rod 103 on the upper edge of the inverter 10 is clamped in the holder 104 on the upper edge of the base 102, so that the inverter 10 has a hanging placement effect before installation, ensuring that the inverter 10 has positioning and labor-saving effects during installation.

[0040] See also Figure 1 and Figure 4The power output lines of the power supply cabinet 1 are respectively connected to the active filter device 3 for suppressing harmonics and the reactive compensation device 4 for improving the power factor. The output side of the reactive compensation device 4 is connected to the capacitor bank 5. The power supply cabinet 1 and the active filter device 3 are respectively connected to the induced draft fan 6, oxidation fan 7, cooling pump 8 and slurry circulation pump 9 of the desulfurization tower through power lines; in the desulfurization electrical system, an amorphous alloy transformer 2 is used to reduce energy consumption and improve energy efficiency, and a frequency converter 10 is used to perform frequency conversion speed control on the induced draft fan 6, oxidation fan 7, cooling pump 8 and slurry circulation pump 9. The active filter device 3, the reactive power compensation device 4 and the capacitor bank 5 enable the electrical system to reduce energy consumption, suppress harmonics, improve the power factor and shorten power outage time, thereby providing strong support for the energy-saving and consumption-reducing operation of the power plant's desulfurization system. The adaptive quantum particle swarm optimization (AQPSO) algorithm is used to promote the energy conservation and consumption reduction of the system. The power consumption of the entire desulfurization electrical system is monitored in real time through the power meter 12, which facilitates real-time monitoring by the staff. This can not only ensure the stability of the desulfurization electrical system and improve the system availability, but also save some energy consumption and greatly reduce the operating cost of the system.

[0041] See also Figure 1-Figure 3 A display screen 11 is installed on the door of the power cabinet 1. The motors of the induced draft fan 6, oxidation fan 7, cooling pump 8 and slurry circulation pump 9 are all controlled by variable frequency speed regulation. The DCS distributed controller 13 is connected to the display screen 11. The electric energy meter 12 is used to monitor the electric energy consumption of the load on the desulfurization tower; the DCS distributed controller 13 is connected to the acquisition terminal 15 through a data line, and the input end of the acquisition terminal 15 is connected to the temperature sensor of the slurry pool at the bottom of the desulfurization tower.

[0042] In specific implementation, the DCS distributed controller 13 is a new generation of instrument control system based on a microprocessor, adopting the design principles of decentralized control functions, centralized display operations, and taking into account both division and autonomy and comprehensive coordination. The DCS distributed controller 13 remotely and centrally controls the induced draft fan 6, oxidation fan 7, cooling pump 8, slurry circulation pump 9, inverter 10, and PLC controller 14 in the desulfurization system, so that the status of each desulfurization electrical equipment is fully reflected in the DCS configuration. The status parameters of the desulfurization electrical equipment are monitored and displayed in real time through the display screen 11 on the power cabinet 1. The PLC controller 14 automatically controls the induced draft fan 6, oxidation fan 7, cooling pump 8, and slurry circulation pump 9, facilitating rapid startup or shutdown of the desulfurization electrical equipment. Machine; when the flue gas discharged from the boiler enters the desulfurization tower, the temperature of the slurry pool at the bottom of the desulfurization tower is detected by the temperature sensor. When the temperature of the desulfurization slurry is too high, the temperature data is transmitted to the DCS distributed controller 13 through the acquisition terminal 15 and displayed on the display screen 11. At the same time, the DCS distributed controller 13 drives the PLC controller 14 to quickly start the cooling pump 8, so that the cooling pump 8 mixes the coolant with the slurry in the form of a spray, thereby controlling the circulating slurry to a suitable temperature range, facilitating the efficient reaction of the desulfurization slurry and the flue gas.

[0043] See also Figure 5-Figure 14 The outer side surface of the outer shell 161 is parallel to a T-shaped groove, and the outer shell 161 is slidably connected to the slider 163 through the T-shaped groove, and a strip-shaped opening is opened on the surface of the slider 163. A C-shaped rod 164 is inserted through one side of the slider 163. A handle 165 is rotatably connected to the outer side of the outer shell 161. A cylinder is fixed to the side of the handle 165. The handle 165 is inserted into the strip opening on the surface of the slider 163 through the cylinder. The limiting mechanism 17 includes a rotating pin 175 movably connected between the outer shell 161 and the inner shell 162. The rotating pin 175 extends through the outer shell 161 and is fixed with a swing arm 166 at one end. One end of the swing arm 166 is movably connected to the end of the C-shaped rod 164.

[0044] A track 171 is installed in the reserved grooves of the outer shell 161 and the inner shell 162. A gear seat 172 is slidably connected to the track 171. Racks are provided on both sides of the gear seat 172. A top block 173 is fixed on the upper side of the gear seat 172. A spring a174 is connected between the gear seat 172 and the track 171.

[0045] The middle part of the rotating pin 175 is movably connected to the adjusting column 177 through the rotating shaft, and the axis of the rotating shaft is parallel to the center line of the adjusting column 177. An anti-deflection toothed disc 176 is fixed to the side of the rotating pin 175 close to the adjusting column 177. The anti-deflection toothed disc 176 has a crescent-shaped structure, and the inner side of the anti-deflection toothed disc 176 abuts against the adjusting column 177. The teeth on the outer edge of the anti-deflection toothed disc 176 are engaged with the rack of the gear seat 172. A driving block 178 is welded to the outer side of the adjusting column 177, and the driving block 178 is movably connected to the traction arm 179.

[0046] A groove is provided at the end of the traction arm 179 away from the driving block 178, and a hook 1710 is rotatably connected inside the groove. A cross bar 1713 is fixed to the inner wall of the groove, and a guide block 1712 and a spring b1714 are sleeved on the outer side of the cross bar 1713. The two ends of the spring b1714 are respectively fixed to the inner wall of the groove and the guide block 1712. A movable rod 1711 is connected between the upper end of the guide block 1712 and the hook 1710.

[0047] The outer edge of the hook 1710 is an arc-shaped structure, and the hooks 1710 are evenly spaced at one end of the traction arm 179. A movable pin 1715 is welded to the lower side of the traction arm 179 near one end of the groove; a slide groove 167 is provided on the inner wall of the reserved groove of the outer shell 161 and the inner shell 162. The slide groove 167 is composed of an inclined slide and a horizontal slide, and the movable pin 1715 is plugged into the slide groove 167.

[0048] During specific implementation, the frequency converter 10 can adjust the motor speed according to load demand, reducing motor power consumption and preventing waste, making the induced draft fan 6, oxidation fan 7, cooling pump 8, and slurry circulation pump 9 used in the desulfurization tower more energy-efficient. Furthermore, the frequency converter 10 can achieve gradual starting and stopping, reducing the impact and stress during starting and stopping, avoiding equipment overload and overheating, and extending the service life of the induced draft fan 6, oxidation fan 7, cooling pump 8, and slurry circulation pump 9.

[0049] In order to facilitate the quick installation, wiring, debugging and maintenance of the inverter 10 in the power cabinet 1, the operating mechanism 16 and the limit mechanism 17 are arranged to cooperate with each other, so that the inverter 10 and the base 102 can be quickly installed and quickly disassembled. The specific operations are as follows:

[0050] The base 102 is pre-installed inside the power cabinet 1 by screws, and then the hanging rod 103 on the upper edge of the inverter 10 is clamped in the clamping seat 104 on the upper edge of the base 102, so that the inverter 10 has the effect of hanging and placing before installation, ensuring that the inverter 10 has the effect of positioning and labor saving during installation; then the inverter 10 is pushed toward the base 102, so that the docking piece 105 on the edge of the base 102 is plugged into the reserved grooves of the outer shell 161 and the inner shell 162, and at the same time, the front end of the docking piece 105 will squeeze the arc-shaped outer edge of the hook 1710, so that the hook 1710 rotates toward the groove of the traction arm 179, and the rotating hook 1710 will squeeze the guide block 1712 through the movable rod 1711, so that the guide block 17 12 moves forward along the cross bar 1713 and stretches the spring b1714. At this time, the rotating hook 1710 will move away from the upper wall of the reserved groove, so that the docking piece 105 can be inserted into the reserved groove of the outer shell 161 and the inner shell 162; when the docking piece 105 is freed from the squeeze of the hook 1710, the spring b1714 resets and contracts, pulling the guide block 1712 to slide in the opposite direction on the cross bar 1713, so that the guide block 1712 pushes the movable rod 1711 and the hook 1710 to move upward, ensuring that the evenly distributed hooks 1710 on the traction arm 179 can lock the docking piece 105, so that the hooks 1710 and the docking piece 105 are locked and tightened, ensuring that the inverter 10 and the base 102 have a fast and stable installation effect;

[0051] When the inverter 10 needs to be disassembled for inspection and maintenance, the handle 165 is pulled to make the cylindrical traction slider 163 on the handle 165 slide along the T-slot, so that the slider 163 will synchronously squeeze the two swing arms 166 on the side of the outer shell 161 through the two ends of the C-shaped rod 164, so that the swing arm 166 produces a positive deflection. At this time, the swing arm 166 will drive the rotating pin 175 to rotate forward, and the rotating pin 175 clamps the adjusting column 177 through the anti-deflection gear plate 176 to deflect around the central axis of the rotating pin 175. At this time, the adjusting column 177 can drive the tail end of the traction arm 179 to deflect upward through the driving block 178. When the rotating pin 175 drives the anti-deflection gear plate 176 to deflect forward, the anti-deflection gear plate 176 will engage and drive the gear seat 172 to move along the track 171 and squeeze the spring a174. The gear seat 17 During the movement, the top block 173 above presses the surface of the adjustment column 177, causing the adjustment column 177 to rotate eccentrically around the rotation axis, ensuring that the adjustment column 177 and the driving block 178 drive the tail end of the traction arm 179 to generate a secondary deflection upward, so that the moving pin 1715 at the front end of the traction arm 179 moves from the inclined slideway of the slide groove 167 to the horizontal slideway, causing the hook 1710 at the front end of the traction arm 179 to move downward to the docking member 105, so that the hook 1710 and the docking member 105 are completely decoupled, and the inverter 10 and the base 102 can be quickly separated. Conversely, the handle 165 is released, so that the spring a174 pushes the top block 173 to return to its original position, thereby causing the rotating pin 175 to rotate in the opposite direction and return to its original position, so that the swing arm 166 can drive the C-shaped rod 164 and the handle 165 to return to their original position.

[0052] In summary, the DCS distributed controller 13 is used to remotely and centrally control the induced draft fan 6, oxidation fan 7, cooling pump 8, slurry circulation pump 9, frequency converter 10 and PLC controller 14 in the desulfurization system, so that the status of each desulfurization electrical equipment is fully reflected in the DCS configuration, and the frequency converter 10 is used to perform variable frequency speed control on the induced draft fan 6, oxidation fan 7, cooling pump 8 and slurry circulation pump 9, thereby reducing the power consumption of the desulfurization tower electrical equipment, preventing waste, and ensuring that the desulfurization electrical system has the effect of energy saving and consumption reduction. The contents not described in detail in this description belong to the existing technology known to professional and technical personnel in this field.

[0053] Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A desulfurization electrical system, comprising a power supply cabinet (1), an amorphous alloy transformer (2), a frequency converter (10), an electric energy meter (12) and a DCS distributed controller (13), characterized in that: The power input end of the power cabinet (1) is connected to the amorphous alloy transformer (2), and a frequency converter (10), an electric energy meter (12), a DCS distributed controller (13), a PLC controller (14) and an acquisition terminal (15) are installed inside the power cabinet (1). The DCS distributed controller (13) is in communication connection with the PLC controller (14), and the PLC controller (14) is electrically connected to the frequency converter (10). One side of the frequency converter (10) is provided with a A base (102) is installed, and a docking piece (105) is symmetrically fixed to the outer edge of the base (102). An operating mechanism (16) is provided on the frequency converter (10), and the operating mechanism (16) includes an outer shell (161) and an inner shell (162) installed on the side of the frequency converter (10) by screws. Adjacent sides of the outer shell (161) and the inner shell (162) are provided with a reserved groove, and a limiting mechanism (17) for limiting the docking piece (105) is provided in the reserved groove; The outer side surface of the outer shell (161) is parallel to a T-shaped groove, and the outer shell (161) is slidably connected to the slider (163) through the T-shaped groove, and the surface of the slider (163) is provided with a strip-shaped opening, and a C-shaped rod (164) is inserted through one side of the slider (163). The outer side of the outer shell (161) is rotatably connected to a handle (165), and a cylinder is fixed to the side of the handle (165). The handle (165) is inserted into the strip-shaped opening on the surface of the slider (163) through the cylinder. The limiting mechanism (17) includes a movable connection on the outer shell. A rotating pin (175) is provided between the housing (161) and the inner housing (162), wherein the rotating pin (175) extends through the outer housing (161) and is fixed with a swing arm (166) at one end thereof, wherein one end of the swing arm (166) is movably connected to the end of the C-shaped rod (164), and a track (171) is installed in the reserved grooves of the outer housing (161) and the inner housing (162), wherein a gear seat (172) is slidably connected to the track (171), racks are provided on both sides of the gear seat (172), and a top block (173) is fixed to the upper side of the gear seat (172). A spring a (174) is connected between the tooth seat (172) and the track (171), the middle part of the rotating pin (175) is movably connected to the adjusting column (177) through the rotating shaft, and the axis of the rotating shaft is parallel to the center line of the adjusting column (177), and an anti-deflection tooth plate (176) is fixed on the side of the rotating pin (175) close to the adjusting column (177), and the teeth on the outer edge of the anti-deflection tooth plate (176) are engaged with the rack of the tooth seat (172), and a driving block (178) is welded on the outer side of the adjusting column (177), and the driving block (1 78) is movably connected to the traction arm (179), and a groove is provided at one end of the traction arm (179) away from the driving block (178), and a hook (1710) is rotatably connected inside the groove, and a cross bar (1713) is fixed to the inner wall of the groove, and a guide block (1712) and a spring b (1714) are sleeved on the outer side of the cross bar (1713), and the two ends of the spring b (1714) are respectively fixed to the inner wall of the groove and the guide block (1712), and a movable rod (1711) is connected between the upper end of the guide block (1712) and the hook (1710).

2. A desulfurization electrical system according to claim 1, characterized in that: The power output lines of the power cabinet (1) are respectively connected to an active filter device (3) for suppressing harmonics and a reactive compensation device (4) for improving power factor. The output side of the reactive compensation device (4) is connected to a capacitor bank (5). The power cabinet (1) and the active filter device (3) are respectively connected to an induced draft fan (6), an oxidation fan (7), a cooling pump (8), and a slurry circulation pump (9) of the desulfurization tower via power lines.

3. The desulfurization electrical system according to claim 1, characterized in that: The outer edge of the hook (1710) is an arc-shaped structure, and the hooks (1710) are evenly spaced at one end of the traction arm (179). A movable pin (1715) is welded to the lower side of the traction arm (179) near one end of the groove.

4. A desulfurization electrical system according to claim 3, characterized in that: A slide groove (167) is provided on the inner wall of the reserved groove of the outer shell (161) and the inner shell (162). The slide groove (167) is composed of an inclined slide and a horizontal slide connected together. The movable pin (1715) is plugged into the slide groove (167).

5. A desulfurization electrical system according to claim 4, characterized in that: A heat dissipation assembly (101) is installed above the frequency converter (10), and the heat dissipation assembly (101) is composed of a fan and a heat sink. A hanging rod (103) is fixed to the upper edge of the frequency converter (10) near the heat dissipation assembly (101), and a socket (104) is provided on the top edge of the base (102) for docking with the hanging rod (103).

6. A desulfurization electrical system according to claim 2, characterized in that: A display screen (11) is installed on the door of the power cabinet (1). The motors of the induced draft fan (6), oxidation fan (7), cooling pump (8) and slurry circulation pump (9) are all controlled by variable frequency speed regulation. The DCS distributed controller (13) is connected to the display screen (11). The electric energy meter (12) is used to monitor the electric energy consumption of the load on the desulfurization tower.

7. A desulfurization electrical system according to claim 6, characterized in that: The DCS distributed controller (13) is connected to the acquisition terminal (15) via a data line, and the input end of the acquisition terminal (15) is connected to the temperature sensor of the slurry pool at the bottom of the desulfurization tower.

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