A soft start and compensation integrated device

Abstract

The present invention discloses a soft start compensation integrated device, including a main body module, a quick response module, a flow compensation module and an angle change module, wherein the main body module is used to adjust the resistance value of the liquid resistance during soft start, and the quick response module is used to quickly adjust the main body module according to the current change during soft start, and the main body module includes a liquid storage outer box and a liquid storage inner box, wherein the liquid storage inner box is arranged inside the liquid storage outer box, and the front and rear sides of the liquid storage inner box are respectively fixedly connected to the inner wall of the liquid storage outer box, and the interior of the liquid storage inner box is provided with a moving pole plate and a fixed pole plate, and the front and rear sides of the inner wall of the liquid storage inner box are provided with a slide groove, and the middle of the front and rear sides of the moving pole plate are fixedly connected with a magnet block. The present invention can quickly move the moving pole plate and has higher control accuracy by providing the main body module and the quick response module.

Description

Technical Field

[0001] The invention relates to the technical field of motor control, and in particular to a soft start and compensation integrated device. Background Art

[0002] When AC motors are started directly at full voltage, the starting current will reach 4-7 times the rated current. When the capacity of the motor is relatively large, the starting current will cause a sharp drop in the grid voltage, affecting the normal operation of other equipment in the same grid. In order to reduce the impact on other equipment, soft starting will be used. The starting current is generally 2-3 times the rated current, and the grid voltage fluctuation rate is generally within 10%. The motor soft starting is to achieve smooth starting of motors and mechanical loads by adopting technical means such as voltage reduction, compensation or frequency conversion, reduce the impact of the starting current on the grid, and protect the grid and mechanical system. Soft start means soft starting, dynamic compensation refers to dynamic compensation of power factor, soft start compensation means dynamic compensation of power factor for soft starters, and soft start compensation integration means integrating soft starting with dynamic compensation of power factor. At present, liquid resistance soft start is a widely used soft start method. The resistance of liquid resistance soft start is easy to control because its resistance is proportional to the relative distance between two electrode plates and inversely proportional to the conductivity of the electrolyte. The relative distance between the plates and the conductivity of the electrolyte are easy to control. In addition, the liquid resistance is mainly composed of water, so its heat capacity is large and the cost is low.

[0003] However, the current plate spacing in the liquid resistance soft start is adjusted by a servo motor, and the servo motor moves the plates slowly through the transmission system, resulting in low control accuracy. In addition, the electrolyte usually has a certain temperature rise after each soft start. If the temperature of the liquid resistance box cannot be reduced in time when starting frequently, it will seriously affect the starting performance of the motor. The temperature increase will accelerate the diffusion of the electrolyte. It is difficult for the servo motor to accurately control the movement distance of the plate according to the current measured in real time, which is not conducive to the smooth starting of the motor. In addition, the metal electrode plate of the liquid resistance soft start is immersed in the electrolyte for a long time, and a certain amount of rust will occur on the surface, which requires regular surface treatment and is more troublesome to maintain. Summary of the invention

[0004] The main purpose of the present invention is to provide an integrated soft start compensation device, which can quickly move the moving electrode plate through the provided main body module and the quick response module; and can prevent the moving electrode plate and the fixed electrode plate from being oxidized and corroded by the electrolyte through the provided flow compensation module and the angle change module, thereby effectively solving the problems in the background technology.

[0005] To achieve the above-mentioned purpose, the technical solution adopted by the present invention is: a soft start compensation integrated device, including a main body module, a quick response module, a flow compensation module and an angle change module, the main body module is used to adjust the resistance value of the liquid resistance during soft start, and the quick response module is used to quickly adjust the main body module according to the current change during soft start, the main body module includes a liquid storage outer box and a liquid storage inner box, the liquid storage inner box is arranged inside the liquid storage outer box, and the front and rear sides of the liquid storage inner box are respectively fixedly connected to the inner wall of the liquid storage outer box, the interior of the liquid storage inner box is provided with a moving pole plate and a fixed pole plate, the front and rear sides of the inner wall of the liquid storage inner box are provided with a slide groove, the middle part of the front and rear sides of the moving pole plate are fixedly connected with a magnet block, the middle part of the front and rear sides of the fixed pole plate are fixedly connected with a fixed block, the magnet block and the fixed block are both located in the slide groove, the interior of the liquid storage outer box and the liquid storage inner box are filled with electrolyte, and the interior of the liquid storage outer box is filled with inert gas.

[0006] The above structure can achieve the following: the moving pole plate and the fixed pole plate are vertically installed inside the liquid storage inner box, and the resistance value during liquid resistance soft starting is changed by moving the moving pole plate. As the distance between the moving pole plate and the fixed pole plate decreases, the resistance decreases, and the current flowing into the motor increases, so that the motor starts smoothly from a low current. The inert gas in the liquid storage outer box is used to isolate the moving pole plate and the fixed pole plate from the air to prevent oxidation and rust of the moving pole plate and the fixed pole plate.

[0007] A further improvement of the present invention is that the quick response module includes a speed limit block, a first electromagnet and a second electromagnet, the first electromagnet and the second electromagnet are both fixedly mounted at the bottom of the slide, and the top ends of the first electromagnet and the second electromagnet are flush with the bottom of the slide, the first electromagnet is vertically mounted in the slide, and the second electromagnet is obliquely mounted in the slide, the outer sides of the first electromagnet and the second electromagnet are covered with a rubber layer, the speed limit block is fixedly mounted on the top of the inner wall of the slide, the spacing between several speed limit blocks is the same, and the bottom of the slide has an inclined slope.

[0008] The above structure can achieve: such a setting can reduce the resistance encountered by the moving pole plate when it moves, so that the moving pole plate moves faster, the first electromagnet and the second electromagnet are energized, the magnetic fields generated by the first electromagnet and the second electromagnet repel the magnet block, the first electromagnet and the second electromagnet both provide an upward force to the magnet block to suspend the magnet block, and the second electromagnet provides a force to move the magnet block to the right, which is used to control the movement of the moving pole plate, and by adjusting the power supply of the first electromagnet and the second electromagnet, the moving speed of the moving pole plate can be quickly controlled; in addition, due to repeated soft starts, the electrolyte temperature will increase, the degree of ionization of the electrolyte will increase, and the conductivity will be enhanced, so that the current input to the motor is greater than expected, by increasing the power supply current of the first electromagnet, the magnet block continues to rise and contact the speed limit block, and the movement of the moving pole plate is buffered to quickly adjust the current input to the motor, the outer side of the first electromagnet and the second electromagnet is covered with a rubber layer to prevent corrosion by the electrolyte, and the bottom of the chute is inclined to prevent the electrolyte from remaining on the chute after the electrolyte in the liquid storage box is discharged into the liquid storage box.

[0009] A further improvement of the present invention is that the flow compensation module is used to replenish the electrolyte in the liquid storage inner box in the main module before soft start, and the flow compensation module includes a connecting box and a transmission belt, the connecting box is arranged inside the liquid storage outer box, the left side of the connecting box is fixedly connected to the left side of the inner wall of the liquid storage outer box, the right side of the connecting box is fixedly connected to the left side of the liquid storage inner box, a cooling chamber is arranged inside the connecting box, circulating water flows inside the cooling chamber, a fan-shaped through hole is opened inside the connecting box, and a fixing plate is fixedly connected to the middle of the arc-shaped edge of the fan-shaped through hole.

[0010] The above structure can achieve the following: when the transmission belt moves, it will drive the electrolyte through the fan-shaped through holes, and the circulating water in the cooling chamber will cool the electrolyte to prevent the conductivity of the electrolyte from being excessively affected by the temperature.

[0011] A further improvement of the present invention is that the transmission belt is arranged on the outside of the liquid storage inner box, and rollers are fixedly installed at the four corners of the liquid storage inner box, the side of the transmission belt close to the liquid storage inner box is in contact with the roller, and the middle part of the side of the transmission belt away from the liquid storage inner box is provided with gear teeth, and the side of the transmission belt away from the liquid storage inner box is fixedly connected with a plurality of pairs of fan-shaped water push plates, and each pair of the fan-shaped water push plates is located on both sides of the gear teeth, and a flexible pad is fixedly connected to the outside of each pair of the fan-shaped water push plates, the dimensions of the fan-shaped water push plates and the transmission belt match the dimensions of the fan-shaped through holes, the radius of the fan-shaped water push plates is the same as the length of the fixed plate, and the width of the gear teeth is the same as the width of the fixed plate.

[0012] A further improvement of the present invention is that a driving motor is fixedly installed on the front of the liquid storage outer box, and a transmission roller is fixedly connected to the output end of the driving motor. One end of the transmission roller passes through the interior of the liquid storage outer box and is transmission-connected to a gear. The gear is located directly below the transmission belt, and the gear is meshingly connected with the gear teeth on the transmission belt. The radius of the gear is larger than the radius of the fan-shaped water pusher plate.

[0013] The above structure can be used to achieve the following: when soft start is required, the drive motor is turned on, and the transmission belt is driven to move through the transmission roller and the gear. The radius of the gear is larger than the length of the fan-shaped water pusher plate, which can avoid collision between the transmission roller and the fan-shaped water pusher plate. During the movement of the transmission belt, the fan-shaped water pusher plate will be driven into the fan-shaped through hole. The flexible pad on the outside of the fan-shaped water pusher plate is used to make the fan-shaped water pusher plate fit tightly with the fan-shaped through hole, so that the electrolyte is brought to the top of the liquid storage box through the fan-shaped through hole.

[0014] A further improvement of the present invention is that a liquid inlet hole is provided on the top of the liquid storage inner box, the upper surface of the liquid storage inner box has a slope, the liquid inlet hole is located at the lowest point of the top of the liquid storage inner box, a guide groove is provided on the top of the liquid storage inner box, the left end of the guide groove is connected to the liquid inlet hole, the right end of the guide groove is connected to the top edge of the liquid storage inner box, the bottom of the guide groove is flush with the top of the liquid inlet hole, an auxiliary block is fixedly installed inside the liquid inlet hole, an insulating rod is fixedly installed on the left side of the moving electrode plate, a spherical block is fixedly installed on the tail end of the insulating rod, the shape of the top of the spherical block matches the shape of the bottom of the liquid inlet hole and the auxiliary block, and an electric valve is fixedly installed on the right side of the liquid storage inner box, and the electric valve is located on the lower end surface of the slide groove.

[0015] The above structure can achieve the following: after the electrolyte flows to the top of the liquid storage inner box, it will flow toward the liquid inlet hole along the slope of the upper surface of the liquid storage inner box until the liquid storage inner box is filled with electrolyte, and the excess electrolyte will flow into the liquid storage outer box along the guide groove to avoid electrolyte accumulation on the top of the liquid storage inner box.

[0016] A further improvement of the present invention is that the angle change module is used to adjust the angles of the moving pole plate and the fixed pole plate in the main module, a first rotating block and a second rotating block are arranged inside the slide slot, two rotating motors are fixedly installed on the front of the liquid storage outer box, the output ends of the two rotating motors are fixedly connected to the first rotating block and the second rotating block respectively, the curvature of the right side of the first rotating block matches the curvature of the magnet block, an expansion chamber is provided on the side of the first rotating block opposite to the magnet block, a connecting ball is fixedly installed on the side of the magnet block opposite to the first rotating block, the expansion chamber matches the size of the connecting ball, and the fixed block is fixedly installed inside the second rotating block.

[0017] The above structure can be used to achieve the following: after the liquid resistance soft start is used, in order to prevent the moving electrode plate and the fixed electrode plate from being oxidized and rusted, the electric valve is opened to discharge the electrolyte in the liquid storage inner box into the liquid storage outer box, and the current direction of the second electromagnet is changed so that the second electromagnet exerts a force to move the magnet block to the left, so that the magnet block contacts the first rotating block, and at the same time the expansion chamber is engaged with the connecting ball, and the two rotating motors respectively drive the first rotating block and the second rotating block to rotate 90° clockwise, and the magnet block is clamped by the first rotating block and the slide groove, while the connecting ball It can prevent the magnet block and the first rotating block from rotating relative to each other, so that the moving pole plate and the fixed pole plate are fixed horizontally, and the electrolyte level in the liquid storage inner box is lower than that of the moving pole plate and the fixed pole plate, so as to prevent the moving pole plate and the fixed pole plate from being immersed in the electrolyte for a long time, and the empty space in the liquid storage inner box is filled with inert gas to prevent the moving pole plate and the fixed pole plate from oxidation and rust. During the rotation of the moving pole plate, the spherical block will be moved to the bottom of the auxiliary block through the insulating rod, and the spherical block and the auxiliary block will cooperate with each other to block the liquid inlet hole to prevent the electrolyte from entering the liquid storage inner box.

[0018] A further improvement of the present invention is that the operation control of the above-mentioned soft start and compensation integrated device includes the following steps:

[0019] Step 1: Connect the moving electrode plate and the fixed electrode plate in the liquid resistance soft start as electrodes in series into the motor rotor circuit. Before starting the motor, start the drive motor first, and drive the drive belt to move through the drive roller and the gear. During the movement of the drive belt, the fan-shaped water pusher plate will be driven into the fan-shaped through hole, so that the electrolyte is brought to the top of the liquid storage box through the fan-shaped through hole, and flows to the liquid inlet hole along the slope of the upper surface of the liquid storage box until the liquid storage box is filled with electrolyte, and then turn off the drive motor;

[0020] Step 2: When the motor is soft-started, the first electromagnet and the second electromagnet are energized, which will generate repulsive force on the magnet block, drive the moving pole plate to suspend and move toward the fixed pole plate. By adjusting the power supply of the first electromagnet and the second electromagnet, the moving speed of the moving pole plate can be quickly controlled, and the starting current of the motor can be monitored in real time. When the current input to the motor is greater than expected due to external factors, the power supply current of the first electromagnet is increased, so that the magnet block continues to rise and contact the speed limit block, and the movement of the moving pole plate is buffered, ensuring that the resistance of the liquid resistance soft start changes steplessly from large to small, so that the motor starts smoothly with low current;

[0021] Step 3: If frequent soft starts are required, in order to avoid excessive changes in the conductivity of the electrolyte due to an increase in the electrolyte temperature, restart the drive motor. When the electrolyte in the liquid storage box is brought into the fan-shaped through hole by the fan-shaped water pusher plate, the circulating water in the cooling chamber will cool the electrolyte to prevent the conductivity of the electrolyte from being affected too much by the temperature until the electrolyte temperature stabilizes;

[0022] Step 4: After the motor soft start is completed, in order to prevent the moving pole plate and the fixed pole plate from being oxidized and corroded by the electrolyte, the electric valve is opened to discharge the electrolyte in the liquid storage inner box to the liquid storage outer box, and the magnet block is contacted with the first rotating block by changing the current direction of the second electromagnet, and the two rotating motors are started at the same time, respectively driving the first rotating block and the second rotating block to rotate 90° clockwise, so that the moving pole plate and the fixed pole plate are fixed horizontally, and the electrolyte level in the liquid storage inner box is lower than the moving pole plate and the fixed pole plate, so as to prevent the moving pole plate and the fixed pole plate from being immersed in the electrolyte for a long time, and the empty space in the liquid storage inner box is filled with inert gas to prevent the moving pole plate and the fixed pole plate from being oxidized and corroded;

[0023] Step five: The temperature of the electrolyte discharged into the outer liquid storage box is relatively high. In order to ensure that the temperature of the electrolyte is within an appropriate range during the next soft start, start the drive motor. The circulating water in the cooling chamber will cool the electrolyte. The insulating rod on the back of the moving plate will move the spherical block to the bottom of the auxiliary block. The spherical block and the auxiliary block cooperate with each other to block the liquid inlet to prevent the electrolyte from entering the inner liquid storage box. Repeat the above steps when soft start is required.

[0024] Compared with the prior art, the present invention can quickly move the moving pole plate with higher control accuracy through the main body module and the quick response module. After the first electromagnet and the second electromagnet are energized, a repulsive force is generated on the magnet block, driving the moving pole plate to suspend and move toward the fixed pole plate. By adjusting the energization of the first electromagnet and the second electromagnet, the moving speed of the moving pole plate can be quickly controlled, and the starting current of the motor can be monitored in real time. When the current input to the motor is greater than expected due to external factors, the energization current of the first electromagnet is increased, so that the magnet block continues to rise and contact the speed limit block, and the movement of the moving pole plate is buffered, ensuring that the resistance of the liquid resistance soft start changes steplessly from large to small so that the motor starts smoothly with low current, and the electrolyte is cooled during the soft start process to prevent the conductivity of the electrolyte from being excessively affected by the temperature.

[0025] Compared with the prior art, the present invention can prevent the moving electrode plate and the fixed electrode plate from being oxidized and corroded by the electrolyte by setting a flow compensation module and an angle change module. When soft start is not required, the electric valve is opened to discharge the electrolyte in the liquid storage inner box to the liquid storage outer box. By changing the direction of the current passing through the second electromagnet, the second electromagnet applies suction to the magnet block to move leftward, so that the magnet block contacts the first rotating block. The two rotating motors are started at the same time, respectively driving the first rotating block and the second rotating block to rotate 90° clockwise, so that the moving electrode plate and the fixed electrode plate are fixed horizontally, and the liquid storage inner box is The electrolyte level in the tank is lower than that of the moving plate and the fixed plate to prevent the moving plate and the fixed plate from being immersed in the electrolyte for a long time, and the empty space in the liquid storage box is filled with inert gas to prevent the moving plate and the fixed plate from oxidation and rust. In addition, in order to ensure that the temperature of the electrolyte is within an appropriate range during the next soft start, the drive motor is started, and the circulating water in the cooling chamber will cool the electrolyte. The insulating rod on the back of the moving plate will move the spherical block to the bottom of the auxiliary block, and the spherical block and the auxiliary block will cooperate with each other to block the liquid inlet hole to prevent the electrolyte from entering the liquid storage box. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 The figure is a schematic diagram of the overall structure of a soft start and compensation integrated device according to an embodiment of the present invention.

[0027] Figure 2 The present invention is a schematic top view of the internal structure of a liquid storage outer box of a soft start and replenishment integrated device according to an embodiment of the present invention.

[0028] Figure 3 The present invention is a schematic diagram of a transmission belt structure of a soft start and compensation integrated device according to an embodiment of the present invention.

[0029] Figure 4 This is a structural schematic diagram of a soft start and replenishment integrated device when the liquid storage inner box stops working according to an embodiment of the present invention.

[0030] Figure 5 The present invention is a schematic diagram of the inner wall structure of a liquid storage box of a soft start and compensation integrated device according to an embodiment of the present invention.

[0031] Figure 6 The present invention is a partial cross-sectional schematic diagram of a soft start and compensation integrated device according to an embodiment of the present invention.

[0032] In the figure: 1, liquid storage outer box; 2, liquid storage inner box; 3, connecting box; 4, moving pole plate; 5, fixed pole plate; 6, roller; 7, transmission belt; 8, fan-shaped water push plate; 9, cooling chamber; 10, fan-shaped through hole; 11, transmission roller; 12, gear; 13, rotating motor; 14, driving motor; 15, fixed plate; 16, liquid inlet hole; 17, guide groove; 18, gear teeth; 19, flexible pad; 20, auxiliary block; 21, magnet block; 22, fixed block; 23, insulating rod; 24, spherical block; 25, electric valve; 26, slide groove; 27, first electromagnet; 28, second electromagnet; 29, speed limit block; 30, first rotating block; 31, expansion chamber; 32, connecting ball; 33, second rotating block. DETAILED DESCRIPTION

[0033] The present invention is further described below in conjunction with specific embodiments, wherein the accompanying drawings are only used for exemplary descriptions and represent only schematic diagrams rather than actual drawings, and should not be understood as limitations on this patent. In order to better illustrate the specific embodiments of the present invention, some parts of the accompanying drawings may be omitted, enlarged or reduced, and do not represent the size of the actual product. For those skilled in the art, it is understandable that some well-known structures and their descriptions in the accompanying drawings may be omitted. Based on the specific embodiments of the present invention, all other specific embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0034] like Figure 1-5 As shown, a soft start compensation integrated device according to an embodiment of the present invention comprises a main body module, a quick response module, a flow compensation module and an angle change module, the main body module is used to adjust the resistance value during liquid resistance soft start, the quick response module is used to quickly adjust the main body module according to the current change during soft start, the main body module comprises a liquid storage outer box 1 and a liquid storage inner box 2, the liquid storage inner box 2 is arranged inside the liquid storage outer box 1, and the front and rear sides of the liquid storage inner box 2 are respectively fixedly connected to the inner wall of the liquid storage outer box 1, a moving pole plate 4 and a fixed pole plate 5 are arranged inside the liquid storage inner box 2, and a slide groove 26 is provided on the front and rear sides of the inner wall of the liquid storage inner box 2, a magnet block 21 is fixedly connected to the middle of the front and rear sides of the moving pole plate 4, and a fixed block 22 is fixedly connected to the middle of the front and rear sides of the fixed pole plate 5, and the magnet block 21 and the fixed block 22 are both located in the slide groove 26, the interior of the liquid storage outer box 1 and the liquid storage inner box 2 are both filled with electrolyte, and the interior of the liquid storage outer box 1 is filled with inert gas.

[0035] The quick response module includes a speed limit block 29, a first electromagnet 27 and a second electromagnet 28. The first electromagnet 27 and the second electromagnet 28 are both fixedly mounted at the bottom of the slide 26, and the top ends of the first electromagnet 27 and the second electromagnet 28 are flush with the bottom of the slide 26. The first electromagnet 27 is vertically mounted in the slide 26, and the second electromagnet 28 is obliquely mounted in the slide 26. The outer sides of the first electromagnet 27 and the second electromagnet 28 are covered with a rubber layer. The speed limit block 29 is fixedly mounted at the top of the inner wall of the slide 26. The spacing between several speed limit blocks 29 is the same, and the bottom of the slide 26 has an inclined slope.

[0036] The flow compensation module is used to replenish the electrolyte to the liquid storage inner box 2 in the main module before soft starting. The flow compensation module includes a connecting box 3 and a transmission belt 7. The connecting box 3 is arranged inside the liquid storage outer box 1. The left side of the connecting box 3 is fixedly connected to the left side of the inner wall of the liquid storage outer box 1, and the right side of the connecting box 3 is fixedly connected to the left side of the liquid storage inner box 2. A cooling chamber 9 is arranged inside the connecting box 3, and circulating water flows inside the cooling chamber 9. A fan-shaped through hole 10 is opened inside the connecting box 3, and a fixing plate 15 is fixedly connected to the middle of the arc-shaped edge of the fan-shaped through hole 10.

[0037] The transmission belt 7 is arranged on the outside of the liquid storage inner box 2, and rollers 6 are fixedly installed at the four corners of the liquid storage inner box 2. The side of the transmission belt 7 close to the liquid storage inner box 2 is in contact with the roller 6, and a gear tooth 18 is provided in the middle of the side of the transmission belt 7 away from the liquid storage inner box 2. A plurality of pairs of fan-shaped water pushing plates 8 are fixedly connected to the side of the transmission belt 7 away from the liquid storage inner box 2, and each pair of fan-shaped water pushing plates 8 are located on both sides of the gear tooth 18. A flexible pad 19 is fixedly connected to the outside of each pair of fan-shaped water pushing plates 8. The dimensions of the fan-shaped water pushing plates 8 and the transmission belt 7 match the dimensions of the fan-shaped through hole 10. The radius of the fan-shaped water pushing plates 8 is the same as the length of the fixed plate 15, and the width of the gear tooth 18 is the same as the width of the fixed plate 15.

[0038] A driving motor 14 is fixedly installed on the front of the liquid storage outer box 1, and a transmission roller 11 is fixedly connected to the output end of the driving motor 14. The transmission roller 11 passes through one end of the liquid storage outer box 1 and is transmission-connected to a gear 12. The gear 12 is located directly below the transmission belt 7. The gear 12 is meshed with the gear teeth 18 on the transmission belt 7, and the radius of the gear 12 is greater than the radius of the fan-shaped water pusher 8.

[0039] By adopting the above technical solution: through the main body module and the fast response module, the moving pole plate 4 can be quickly moved with higher control accuracy. After the first electromagnet 27 and the second electromagnet 28 are energized, a repulsive force will be generated on the magnet block 21, driving the moving pole plate 4 to suspend and move toward the fixed pole plate 5. By adjusting the power supply of the first electromagnet 27 and the second electromagnet 28, the moving speed of the moving pole plate 4 can be quickly controlled, and the starting current of the motor can be monitored in real time. When the current input to the motor is greater than expected due to external factors, the power supply current of the first electromagnet 27 is increased, so that the magnet block 21 continues to rise and contacts the speed limit block 29, and the movement of the moving pole plate 4 is buffered, ensuring that the resistance of the liquid resistance soft start changes from large to small steplessly so that the motor starts smoothly with low current, and in the process of soft start, the drive motor 14 is turned on, and when the electrolyte in the liquid storage outer box 1 is brought into the fan-shaped through hole 10 by the fan-shaped water push plate 8, the circulating water in the cooling chamber 9 will cool the electrolyte to prevent the conductivity of the electrolyte from being too greatly affected by the temperature.

[0040] like Figure 1-6 As shown, a soft start compensation integrated device according to another embodiment of the present invention includes a main body module, a quick response module, a flow compensation module and an angle change module. The main body module is used to adjust the resistance value of the liquid resistance during soft start, and the quick response module is used to quickly adjust the main body module according to the current change during soft start. The main body module includes a liquid storage outer box 1 and a liquid storage inner box 2. The liquid storage inner box 2 is arranged inside the liquid storage outer box 1, and the front and rear sides of the liquid storage inner box 2 are respectively fixedly connected to the inner wall of the liquid storage outer box 1. A moving pole plate 4 and a fixed pole plate 5 are arranged inside the liquid storage inner box 2. Slide grooves 26 are provided on the front and rear sides of the inner wall of the liquid storage inner box 2. The middle parts of the front and rear sides of the moving pole plate 4 are fixedly connected with magnet blocks 21, and the middle parts of the front and rear sides of the fixed pole plate 5 are fixedly connected with fixed blocks 22. The magnet blocks 21 and the fixed blocks 22 are both located in the slide grooves 26. The interiors of the liquid storage outer box 1 and the liquid storage inner box 2 are filled with electrolyte, and the interior of the liquid storage outer box 1 is filled with inert gas.

[0041] The quick response module includes a speed limit block 29, a first electromagnet 27 and a second electromagnet 28. The first electromagnet 27 and the second electromagnet 28 are both fixedly mounted at the bottom of the slide 26, and the top ends of the first electromagnet 27 and the second electromagnet 28 are flush with the bottom of the slide 26. The first electromagnet 27 is vertically mounted in the slide 26, and the second electromagnet 28 is obliquely mounted in the slide 26. The outer sides of the first electromagnet 27 and the second electromagnet 28 are covered with a rubber layer. The speed limit block 29 is fixedly mounted at the top of the inner wall of the slide 26. The spacing between several speed limit blocks 29 is the same, and the bottom of the slide 26 has an inclined slope.

[0042] The flow compensation module is used to replenish the electrolyte to the liquid storage inner box 2 in the main module before soft starting. The flow compensation module includes a connecting box 3 and a transmission belt 7. The connecting box 3 is arranged inside the liquid storage outer box 1. The left side of the connecting box 3 is fixedly connected to the left side of the inner wall of the liquid storage outer box 1, and the right side of the connecting box 3 is fixedly connected to the left side of the liquid storage inner box 2. A cooling chamber 9 is arranged inside the connecting box 3, and circulating water flows inside the cooling chamber 9. A fan-shaped through hole 10 is opened inside the connecting box 3, and a fixing plate 15 is fixedly connected to the middle of the arc-shaped edge of the fan-shaped through hole 10.

[0043] The transmission belt 7 is arranged on the outside of the liquid storage inner box 2, and rollers 6 are fixedly installed at the four corners of the liquid storage inner box 2. The side of the transmission belt 7 close to the liquid storage inner box 2 is in contact with the roller 6, and a gear tooth 18 is provided in the middle of the side of the transmission belt 7 away from the liquid storage inner box 2. A plurality of pairs of fan-shaped water pushing plates 8 are fixedly connected to the side of the transmission belt 7 away from the liquid storage inner box 2, and each pair of fan-shaped water pushing plates 8 are located on both sides of the gear tooth 18. A flexible pad 19 is fixedly connected to the outside of each pair of fan-shaped water pushing plates 8. The dimensions of the fan-shaped water pushing plates 8 and the transmission belt 7 match the dimensions of the fan-shaped through hole 10. The radius of the fan-shaped water pushing plates 8 is the same as the length of the fixed plate 15, and the width of the gear tooth 18 is the same as the width of the fixed plate 15.

[0044] A driving motor 14 is fixedly installed on the front of the liquid storage outer box 1, and a transmission roller 11 is fixedly connected to the output end of the driving motor 14. The transmission roller 11 passes through one end of the liquid storage outer box 1 and is transmission-connected to a gear 12. The gear 12 is located directly below the transmission belt 7. The gear 12 is meshed with the gear teeth 18 on the transmission belt 7, and the radius of the gear 12 is greater than the radius of the fan-shaped water pusher 8.

[0045] A liquid inlet hole 16 is provided at the top of the liquid storage inner box 2, and the upper surface of the liquid storage inner box 2 has a slope. The liquid inlet hole 16 is located at the lowest point of the top of the liquid storage inner box 2. A guide groove 17 is provided at the top of the liquid storage inner box 2. The left end of the guide groove 17 is connected to the liquid inlet hole 16, and the right end of the guide groove 17 is connected to the top edge of the liquid storage inner box 2. The bottom of the guide groove 17 is flush with the top of the liquid inlet hole 16, and an auxiliary block 20 is fixedly installed inside the liquid inlet hole 16. An insulating rod 23 is fixedly installed on the left side of the moving electrode plate 4, and a spherical block 24 is fixedly installed on the tail end of the insulating rod 23. The shape of the top of the spherical block 24 matches the shape of the bottom of the liquid inlet hole 16 and the auxiliary block 20. An electric valve 25 is fixedly installed on the right side of the liquid storage inner box 2, and the electric valve 25 is located on the lower end surface of the slide groove 26.

[0046] The angle changing module is used to adjust the angles of the moving pole plate 4 and the fixed pole plate 5 in the main body module. The first rotating block 30 and the second rotating block 33 are arranged inside the slide groove 26. Two rotating motors 13 are fixedly installed on the front of the liquid storage outer box 1. The output ends of the two rotating motors 13 are fixedly connected to the first rotating block 30 and the second rotating block 33 respectively. The curvature of the right side of the first rotating block 30 matches the curvature of the magnet block 21. An expansion chamber 31 is provided on the side of the first rotating block 30 opposite to the magnet block 21. A connecting ball 32 is fixedly installed on the side of the magnet block 21 opposite to the first rotating block 30. The size of the expansion chamber 31 matches that of the connecting ball 32. The fixed block 22 is fixedly installed inside the second rotating block 33. After the first rotating block 30 rotates 90° clockwise, the magnet block 21 will be clamped by the first rotating block 30 and the slide groove 26, and the connecting ball 32 can prevent the magnet block 21 and the first rotating block 30 from rotating relative to each other, causing the moving pole plate 4 to fall into the electrolyte.

[0047] By adopting the above technical solution: the flow compensation module and the angle change module are set to prevent the moving pole plate 4 and the fixed pole plate 5 from being oxidized and corroded by the electrolyte. When soft starting is not required, the electric valve 25 is opened to discharge the electrolyte in the liquid storage inner box 2 to the liquid storage outer box 1. By changing the direction of the current passing through the second electromagnet 28, the second electromagnet 28 applies suction to the magnet block 21 to move to the left, so that the magnet block 21 contacts the first rotating block 30. The two rotating motors 13 are started at the same time, respectively driving the first rotating block 30 and the second rotating block 33 to rotate clockwise by 90°, so that the moving pole plate 4 and the fixed pole plate 5 are fixed horizontally, and the electrolyte level in the liquid storage inner box 2 is lower than the moving pole plate 4 and the fixed pole plate 5, avoiding the moving pole plate 4 and the fixed electrode plate 5 are immersed in the electrolyte for a long time, and the empty space in the liquid storage inner box 2 is filled with inert gas to prevent the moving electrode plate 4 and the fixed electrode plate 5 from oxidation and rust. The connecting ball 32 inserted into the expansion chamber 31 can prevent the magnet block 21 and the first rotating block 30 from rotating relative to each other, so as to prevent the moving electrode plate 4 from falling into the electrolyte. In addition, in order to ensure that the temperature of the electrolyte is within a suitable range during the next soft start, the circulating water in the cooling chamber 9 will cool the electrolyte by starting the drive motor 14, and the insulating rod 23 on the back of the moving electrode plate 4 will move the spherical block 24 to the bottom of the auxiliary block 20. The spherical block 24 and the auxiliary block 20 cooperate with each other to block the liquid inlet 16 to prevent the electrolyte from entering the liquid storage inner box 2.

[0048] The present invention also proposes a method for performing soft start control using the above-mentioned soft start and compensation integrated device, which specifically includes the following steps:

[0049] First, the moving electrode plate 4 and the fixed electrode plate 5 in the liquid resistance soft start are connected in series as electrodes into the motor rotor circuit. Before starting the motor, the drive motor 14 is started first, and the drive belt 7 is driven to move through the drive roller 11 and the gear 12. During the movement of the drive belt 7, the fan-shaped water pusher plate 8 is driven to enter the fan-shaped through hole 10, so that the electrolyte is brought to the top of the liquid storage box 2 through the fan-shaped through hole 10, and flows to the liquid inlet hole 16 along the slope of the upper surface of the liquid storage box 2 until the liquid storage box 2 is filled with electrolyte, and the drive motor 14 is turned off; after the first electromagnet 27 and the second electromagnet 28 are energized, a repulsive force is generated on the magnet block 21, driving the moving electrode plate 4 to float and move toward the direction of the fixed electrode plate 5. By adjusting the power supply of the first electromagnet 27 and the second electromagnet 28, the moving speed of the moving pole plate 4 can be quickly controlled, and the starting current of the motor can be monitored in real time. When the current input to the motor is greater than expected due to external factors, the power supply current of the first electromagnet 27 is increased, so that the magnet block 21 continues to rise and contacts the speed limit block 29, and the movement of the moving pole plate 4 is buffered, ensuring that the resistance of the liquid resistance soft start changes from large to small steplessly so that the motor starts smoothly with low current; if frequent soft starts are required, in order to avoid excessive changes in the conductivity of the electrolyte due to the increase in electrolyte temperature, the drive motor 14 is restarted, and the electrolyte in the liquid storage outer box 1 is brought into the fan-shaped through hole 10 by the fan-shaped water push plate 8. During the cooling process, the circulating water in the cooling chamber 9 will cool down the electrolyte to prevent the conductivity of the electrolyte from being too greatly affected by the temperature, until the electrolyte temperature tends to be stable; after the motor is started, in order to prevent the moving electrode plate 4 and the fixed electrode plate 5 from being oxidized and corroded by the electrolyte, the electric valve 25 is opened to discharge the electrolyte in the liquid storage inner box 2 into the liquid storage outer box 1, and by changing the direction of the current passing through the second electromagnet 28, the magnet block 21 is brought into contact with the first rotating block 30, and the two rotating motors 13 are started at the same time, respectively driving the first rotating block 30 and the second rotating block 33 to rotate clockwise by 90°, so that the moving electrode plate 4 and the fixed electrode plate 5 are fixed horizontally, and the electrolyte level in the liquid storage inner box 2 is lower than that of the moving electrode plate 4 and the fixed electrode plate 5. Plate 5, prevent the moving electrode plate 4 and the fixed electrode plate 5 from being immersed in the electrolyte for a long time, and the empty space in the liquid storage inner box 2 is filled with inert gas to prevent the moving electrode plate 4 and the fixed electrode plate 5 from oxidation and rust; since the temperature of the electrolyte discharged into the liquid storage outer box 1 is relatively high, in order to ensure that the temperature of the electrolyte is within a suitable range during the next soft start, the drive motor 14 is started, and the circulating water in the cooling chamber 9 will cool the electrolyte, and the insulating rod 23 on the back of the moving electrode plate 4 will move the spherical block 24 to the bottom of the auxiliary block 20, and the spherical block 24 and the auxiliary block 20 cooperate with each other to block the liquid inlet 16 to prevent the electrolyte from entering the liquid storage inner box 2. When the motor needs to be soft started, repeat the above steps.

[0050] The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention to be protected. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A soft start compensation integrated device, comprising a main body module, a quick response module, a flow compensation module and an angle change module, characterized in that: The main body module is used to adjust the resistance value during the soft start of the liquid resistance, and the quick response module is used to quickly adjust the main body module according to the current change during the soft start. The main body module includes an outer liquid storage box and an inner liquid storage box. The inner liquid storage box is arranged inside the outer liquid storage box, and the front and rear sides of the inner liquid storage box are respectively fixedly connected to the inner wall of the outer liquid storage box. The inner liquid storage box is provided with a moving pole plate and a fixed pole plate. The front and rear sides of the inner wall of the inner liquid storage box are provided with a slide groove. The middle parts of the front and rear sides of the moving pole plate are fixedly connected with a magnet block, and the middle parts of the front and rear sides of the fixed pole plate are fixedly connected with a fixed block. The magnet block and the fixed block are both located in the slide groove. The interiors of the outer liquid storage box and the inner liquid storage box are filled with electrolyte, and the interior of the outer liquid storage box is filled with inert gas. The quick response module includes a speed limit block, a first electromagnet and a second electromagnet, the first electromagnet and the second electromagnet are both fixedly mounted at the bottom of the slide, and the tops of the first electromagnet and the second electromagnet are flush with the bottom of the slide, the first electromagnet is vertically mounted in the slide, and the second electromagnet is tiltedly mounted in the slide, the outer sides of the first electromagnet and the second electromagnet are both covered with a rubber layer, the speed limit block is fixedly mounted on the top of the inner wall of the slide, the spacing between several speed limit blocks is the same, and the bottom of the slide has an inclined slope; The flow compensation module is used to replenish electrolyte in the liquid storage inner box in the main module before soft starting. The flow compensation module includes a connection box and a transmission belt. The connection box is arranged inside the liquid storage outer box. The left side of the connection box is fixedly connected to the left side of the inner wall of the liquid storage outer box. The right side of the connection box is fixedly connected to the left side of the liquid storage inner box. A cooling cavity is arranged inside the connection box. Circulating water flows inside the cooling cavity. A fan-shaped through hole is opened inside the connection box. A fixing plate is fixedly connected to the middle of the arc edge of the fan-shaped through hole. The angle change module is used to adjust the angles of the moving pole plate and the fixed pole plate in the main module, a first rotating block and a second rotating block are arranged inside the slide slot, two rotating motors are fixedly installed on the front of the liquid storage outer box, and the output ends of the two rotating motors are fixedly connected to the first rotating block and the second rotating block respectively, the curvature of the right side of the first rotating block matches the curvature of the magnet block, an expansion chamber is provided on the side of the first rotating block opposite to the magnet block, a connecting ball is fixedly installed on the side of the magnet block opposite to the first rotating block, the expansion chamber matches the size of the connecting ball, and the fixed block is fixedly installed inside the second rotating block.

2. The soft start and compensation integrated device according to claim 1, characterized in that: The transmission belt is arranged on the outside of the liquid storage inner box, and rollers are fixedly installed at the four corners of the liquid storage inner box, the side of the transmission belt close to the liquid storage inner box is in contact with the roller, and the middle part of the side of the transmission belt away from the liquid storage inner box is provided with gear teeth, and the side of the transmission belt away from the liquid storage inner box is fixedly connected with a plurality of pairs of fan-shaped water pushing plates, and each pair of the fan-shaped water pushing plates is located on both sides of the gear teeth, and a flexible pad is fixedly connected to the outside of each pair of the fan-shaped water pushing plates, the dimensions of the fan-shaped water pushing plates and the transmission belt match the dimensions of the fan-shaped through holes, the radius of the fan-shaped water pushing plates is the same as the length of the fixed plate, and the width of the gear teeth is the same as the width of the fixed plate.

3. The soft start and compensation integrated device according to claim 2, characterized in that: A driving motor is fixedly installed on the front of the liquid storage outer box, and a transmission roller is fixedly connected to the output end of the driving motor. One end of the transmission roller passes through the interior of the liquid storage outer box and is transmission-connected to a gear. The gear is located directly below the transmission belt, and the gear is meshed with the gear teeth on the transmission belt. The radius of the gear is larger than the radius of the fan-shaped water pusher plate.

4. The soft start and compensation integrated device according to claim 1, characterized in that: A liquid inlet hole is provided on the top of the liquid storage inner box, and the upper surface of the liquid storage inner box has a slope. The liquid inlet hole is located at the lowest point of the top of the liquid storage inner box. A guide groove is provided on the top of the liquid storage inner box, and the left end of the guide groove is connected with the liquid inlet hole, and the right end of the guide groove is connected with the top edge of the liquid storage inner box. The bottom of the guide groove is flush with the top of the liquid inlet hole, and an auxiliary block is fixedly installed inside the liquid inlet hole, an insulating rod is fixedly installed on the left side of the moving electrode plate, and a spherical block is fixedly installed on the tail end of the insulating rod, and the shape of the top of the spherical block matches the shape of the bottom of the liquid inlet hole and the auxiliary block. An electric valve is fixedly installed on the right side of the liquid storage inner box, and the electric valve is located on the lower end surface of the slide groove.

5. A soft start compensation integrated method, characterized in that: Using the soft start and compensation integrated device as described in any one of claims 1 to 4, the method comprises the following steps: Step 1: Connect the moving electrode plate and the fixed electrode plate in the liquid resistance soft start as electrodes in series into the motor rotor circuit. Before starting the motor, start the drive motor first, and drive the drive belt to move through the drive roller and the gear. During the movement of the drive belt, the fan-shaped water pusher plate will be driven into the fan-shaped through hole, so that the electrolyte is brought to the top of the liquid storage box through the fan-shaped through hole, and flows to the liquid inlet hole along the slope of the upper surface of the liquid storage box until the liquid storage box is filled with electrolyte, and then turn off the drive motor; Step 2: When the motor is soft-started, the first electromagnet and the second electromagnet are energized, which will generate repulsive force on the magnet block, drive the moving pole plate to suspend and move toward the fixed pole plate. By adjusting the power supply of the first electromagnet and the second electromagnet, the moving speed of the moving pole plate can be quickly controlled, and the starting current of the motor can be monitored in real time. When the current input to the motor is greater than expected due to external factors, the power supply current of the first electromagnet is increased, so that the magnet block continues to rise and contact the speed limit block, and the movement of the moving pole plate is buffered, ensuring that the resistance of the liquid resistance soft start changes steplessly from large to small, so that the motor starts smoothly with low current; Step 3: If frequent soft starts are required, in order to avoid excessive changes in the conductivity of the electrolyte due to an increase in the electrolyte temperature, restart the drive motor. When the electrolyte in the liquid storage box is brought into the fan-shaped through hole by the fan-shaped water pusher plate, the circulating water in the cooling chamber will cool the electrolyte to prevent the conductivity of the electrolyte from being affected too much by the temperature until the electrolyte temperature stabilizes; Step 4: After the motor is started, in order to prevent the moving electrode plate and the fixed electrode plate from being oxidized and corroded by the electrolyte, the electric valve is opened to discharge the electrolyte in the liquid storage inner box to the liquid storage outer box, and the magnet block is brought into contact with the first rotating block by changing the direction of the current passing through the second electromagnet. The two rotating motors are started at the same time, and the first rotating block and the second rotating block are driven to rotate 90° clockwise respectively, so that the moving electrode plate and the fixed electrode plate are fixed horizontally, and the electrolyte level in the liquid storage inner box is lower than that of the moving electrode plate and the fixed electrode plate, so as to prevent the moving electrode plate and the fixed electrode plate from being immersed in the electrolyte for a long time, and the empty space in the liquid storage inner box is filled with inert gas to prevent the moving electrode plate and the fixed electrode plate from being oxidized and corroded; Step five: The temperature of the electrolyte discharged into the outer liquid storage box is relatively high. In order to ensure that the temperature of the electrolyte is within an appropriate range during the next soft start, start the drive motor. The circulating water in the cooling chamber will cool the electrolyte. The insulating rod on the back of the moving plate will move the spherical block to the bottom of the auxiliary block. The spherical block and the auxiliary block cooperate with each other to block the liquid inlet to prevent the electrolyte from entering the inner liquid storage box. Repeat the above steps when soft start is required.

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