A bridging type voltage limiting system and device for a series reactor

Abstract

The present invention relates to the field of reactors, and specifically discloses a bridging type voltage limiting system and device for series reactors, including an installation module, a protection module, an overvoltage suppression module, and a switching module. The installation module is used to connect the voltage limiting system to both ends of the reactor; the protection module is used to protect the overvoltage suppression module; the overvoltage suppression module is used to suppress the overvoltage in the reactor; the switching module is used to control the opening or closing of the circuit where the overvoltage suppression module is located. Through the setting of the overvoltage suppression unit, the overvoltage generated by the reactor can be effectively absorbed and eliminated. At the same time, through the setting of the spiral coil and the iron rod, based on the principle of the electromagnet, on the one hand, the closing speed of the device can be effectively improved. On the other hand, when no overvoltage is generated in the reactor, the connection between the iron rod and the sliding rod is disconnected, so that the device can effectively protect the overvoltage suppression unit.

Description

Technical Field

[0001] The present invention relates to a voltage limiting system, in particular to a bridging type voltage limiting system and device for a series reactor, belonging to the field of reactors. Background Art

[0002] A reactor is also called an inductor. When a conductor is energized, a magnetic field will be generated in a certain space range it occupies. Therefore, all current-carrying conductors have inductance in a general sense. To ensure the safety of the reactor, a protector is usually bridged across the reactor to limit the voltage.

[0003] However, the existing bridging type voltage limiting system for series reactors still has certain defects in use. In the prior art, lightning arresters are often set, and lightning arresters are set at both ends of the reactor. This can only suppress lightning and some switching overvoltages. When a short circuit occurs in the line, due to the fact that the magnetic field inside the reactor cannot change suddenly, the reactor will bear the rated DC voltage of the entire line for a short time, which easily leads to oversaturation of the reactor. And using an overvoltage protector also has the drawback of thermal breakdown of the protector. For this reason, we propose a bridging type voltage limiting system and device for a series reactor. Summary of the Invention

[0004] In view of the problems in the prior art, the present invention provides a bridging type voltage limiting system and device for a series reactor.

[0005] The purpose of the present invention can be achieved through the following technical solutions:

[0006] A bridging type voltage limiting system and device for a series reactor, including an installation module, a protection module, an overvoltage suppression module, and a switching module;

[0007] The installation module is used to connect the voltage limiting system to both ends of the reactor;

[0008] The protection module is used to protect the overvoltage suppression module;

[0009] The overvoltage suppression module is used to suppress the overvoltage in the reactor;

[0010] The switching module is used to control the opening or closing of the circuit where the overvoltage suppression module is located.

[0011] Preferably, the installation module includes a first connecting wire and a second connecting wire;

[0012] The protection module includes a housing and a fuse;

[0013] The overvoltage suppression module includes an overvoltage suppression unit;

[0014] The switching module includes an iron rod and a sliding rod;

[0015] The installation module is electrically connected to the overvoltage suppression module and the on-off module through a fuse.

[0016] A cross-connected voltage limiting device for a series inductor, the voltage limiting device comprises a shell, the upper and lower ends of the shell are respectively fixedly connected with a top cover and a bottom cover, a second connecting line passes through the top cover, an iron rod is fixedly connected to the bottom of an overvoltage suppression unit, a spiral coil is arranged on the outside of the iron rod, the iron rod is movably electrically connected to a slide rod, the iron rod is electrically connected to a counter through the slide rod, a power supply is arranged inside the counter, one end of the counter away from the iron rod is electrically connected to the first connecting line, an annular solar panel is arranged on the bottom side of the bottom cover, and the solar panel is electrically connected to the power supply in the counter.

[0017] Preferably, the solenoid coil is electrically connected to a power supply in the counter, a detector for detecting overvoltage is fixedly connected to the top side of the counter, the detector is electrically connected to the solenoid coil, a plurality of guide rods are fixedly connected to the top side of the counter, and one end of the guide rods away from the counter is fixedly connected to the bottom wall panel of the bottom cover.

[0018] Preferably, a hole groove is provided at the inner center of the bottom cover, and an annular slide rail is provided inside the middle section of the bottom cover, a sliding iron ring is slidably sleeved in the slide rail, a plurality of iron columns are fixedly connected to the top of the sliding iron ring, a fixed iron ring is provided above the iron column, the fixed iron ring is fixedly embedded in the inside of the bottom cover, the iron column and the fixed iron ring are movably abutted, a guide roller is fixedly connected to the top of the fixed iron ring, the guide roller passes through the top of the bottom cover, and a receiving assembly is provided on the top of the guide roller.

[0019] Preferably, the guiding assembly includes a rotating rod rotatably connected to the top of the guide roller, a telescopic rod rotatably connected to the middle section of the rotating rod, an end of the telescopic rod away from the rotating rod is rotatably connected to the shell, the telescopic rod is adapted to the spiral coil, and the top of the rotating rod is movably abutted against the iron rod through the telescopic rod.

[0020] Preferably, the top of the counter is fixedly connected to a piston cylinder, the top of the piston cylinder is located in a hole groove opened at the center of the bottom cover, the inside of the piston cylinder is slidably sleeved with a piston plate, the top of the piston plate is fixedly connected to a sliding rod, the sliding rod is movably abutted against an iron rod, the iron rod is electrically connected to the counter through the sliding rod, and a spring is sleeved on the sliding rod, and both ends of the spring are respectively fixedly connected to the bottom of the piston cylinder top plate and the top of the piston plate.

[0021] Preferably, the outer bottom of the sliding iron ring is fixedly connected to an outer gear ring, the outer gear ring is rotatably connected to the inside of the bottom cover, the outer gear ring is meshingly connected to an inner gear ring, the inner gear ring is fixedly connected to a rotating ring and the inner gear ring is fixedly connected to the inside of the rotating ring, and a plurality of brush rollers are fixedly connected to the outer bottom of the rotating ring, and the brush rollers abut against the solar panel.

[0022] Preferably, a plurality of curved sliding grooves are formed in the outer side wall plate of the sliding rail, and a convex ball is slidably connected inside the curved sliding groove. The convex ball is fixedly connected to the middle of the outer side of the sliding iron ring.

[0023] Preferably, an airbag is arranged at the outer bottom of the piston cylinder. A through hole is formed in the position of the airbag close to the inside of the piston cylinder. The airbag is communicated with the inside of the piston cylinder through the through hole. The airbag is movably abutted against the side wall plate of the hole groove at the center of the bottom cover.

[0024] Preferably, the piston cylinder, the piston plate and the sliding rod are all made of iron. A plurality of annular extension plates are fixedly connected to the outer side of the housing. The fuse is arranged at the inner top of the housing. The overvoltage suppression unit is arranged at the center inside the housing.

[0025] Advantages of the present invention:

[0026] 1. Through the setting of the overvoltage suppression unit, the overvoltage generated by the reactor can be effectively absorbed and eliminated. At the same time, through the setting of the solenoid coil and the iron rod, based on the principle of electromagnet, on the one hand, the closing speed of the device can be effectively improved. On the other hand, when no overvoltage is generated in the reactor, the connection between the iron rod and the sliding rod is disconnected, so that the device can effectively protect the overvoltage suppression unit, and thus the service life of the overvoltage suppression unit is effectively increased.

[0027] 2. By using solar energy to supplement the power supply of the counter, on the one hand, it can effectively prevent the device from malfunctioning due to the lack of electric energy in the power supply of the counter. On the other hand, the solar panel can also play a role in protecting the counter from wind and rain to a certain extent, and thus can effectively extend the service life of the counter. The brush roller effectively cleans the outer surface of the solar panel, so that the efficiency of the solar panel in absorbing solar energy is effectively guaranteed.

[0028] 3. When the magnetic force of the iron rod is too strong and the fixed iron ring cannot effectively demagnetize, after the magnetic force in the fixed iron ring becomes stronger, it will attract the iron column to abut against the fixed iron ring. Then the sliding iron ring further eliminates the magnetic force of the iron rod through the fixed iron ring. Then the spring makes the sliding rod separate from the iron rod by applying an elastic force to the piston plate, so that the device can effectively cut off the power supply to protect the overvoltage suppression unit.

[0029] 4. Through the setting of the airbag, on the one hand, the relatively high temperature inside the housing can be guided out, preventing the pressure inside the housing from increasing due to the temperature rise of the components, and effectively preventing the occurrence of thermal breakdown of the overvoltage protector. On the other hand, through the replacement of gas, it can also prevent the internal current of the device from electrolyzing the ions in the air and causing changes in the magnetic field, thereby affecting the operation of the iron rod. When the iron rod is separated from the sliding rod, the airbag seals the inside of the housing, preventing moist air and dust in the air from entering the inside of the housing. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] For the convenience of those skilled in the art to understand, the present invention will be further described below with reference to the accompanying drawings.

[0031] Figure 1 Schematic diagram of the overall structure of the present invention.

[0032] Figure 2 Schematic diagram of the overall structure of the present invention from another perspective.

[0033] Figure 3 Schematic diagram of the connection structure between the fuse and the overvoltage suppression unit of the present invention.

[0034] Figure 4 Schematic cross-sectional view of the structure of the bottom cover of the present invention.

[0035] Figure 5 Schematic cross-sectional view of the structure of the bottom cover at another position of the present invention.

[0036] Figure 6 Schematic cross-sectional view of the structure of the housing of the present invention.

[0037] Figure 7 For the present invention Figure 6 Schematic enlarged view of the structure of part A shown.

[0038] Figure 8 For the present invention Figure 6 Schematic enlarged view of the structure of part B shown.

[0039] Figure 9 For the present invention Figure 6 Schematic enlarged view of the structure of part C shown.

[0040] In the figure: 1, housing; 2, top cover; 3, bottom cover; 4, solar panel; 5, first connecting wire; 6, counter; 7, extension plate; 8, brush roller; 9, rotating ring; 10, second connecting wire; 11, fuse; 12, overvoltage suppression unit; 13, iron rod; 14, solenoid coil; 15, curved chute; 16, iron column; 17, slide rail; 18, spring; 19, slide bar; 20, internal gear ring; 21, external gear ring; 22, sliding iron ring; 23, detector; 24, fixed iron ring; 25, convex ball; 26, guiding roller; 27, piston cylinder; 29, rotating bar; 30, telescopic rod; 31, airbag; 32, piston plate. Detailed implementation manners

[0041] The technical solutions of the present invention will be clearly and completely described below in conjunction with the embodiments. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0042] Please refer to Figures 1-9 As shown, a bridging type voltage limiting system for a series reactor includes an installation module, a protection module, an overvoltage suppression module, and a switching module. The installation module is used to connect the voltage limiting system to both ends of the reactor. The protection module is used to protect the overvoltage suppression module. The overvoltage suppression module is used to suppress the overvoltage in the reactor. When there is no overvoltage in the reactor, the switching module enables the overvoltage suppression module not to bear the operating voltage.

[0043] As a technical optimization solution of the present invention, the installation module includes a first connecting wire 5 and a second connecting wire 10;

[0044] The protection module includes a housing 1 and a fuse 11;

[0045] The overvoltage suppression module includes an overvoltage suppression unit 12;

[0046] The switching module includes an iron rod 13 and a slide bar 19;

[0047] The installation module is electrically connected to the overvoltage suppression module and the switching module through a fuse 11.

[0048] The setting of the switching module enables the device to be in an open state between the iron rod 13 and the slide bar 19 during the normal operation of the power grid system, without bearing the operating voltage and with zero leakage current, which can extend the service life of the voltage limiting device.

[0049] A cross-connected voltage limiting device for a series reactor, the voltage limiting device comprises a housing 1, the upper and lower ends of the housing 1 are respectively fixedly connected with a top cover 2 and a bottom cover 3, a second connecting line 10 passes through the top cover 2, an iron rod 13 is fixedly connected to the bottom of an overvoltage suppression unit 12, a spiral coil 14 is arranged on the outside of the iron rod 13, the iron rod 13 is movably electrically connected with a slide bar 19, the iron rod 13 is electrically connected with a counter 6 through the slide bar 19, a power supply is arranged inside the counter 6, one end of the counter 6 away from the iron rod 13 is electrically connected with a first connecting line 5, a ring-shaped solar panel 4 is arranged on the bottom side of the bottom cover 3, and the solar panel 4 is electrically connected with the power supply in the counter 6. A power adapter is arranged in the solar panel 4, and the power adapter can effectively supplement the power supply in the counter 6.

[0050] As a technical optimization solution of the present invention, the solenoid 14 is electrically connected to the power supply in the counter 6, and a detector 23 for detecting overvoltage is fixedly connected to the top side of the counter 6. The detector 23 is electrically connected to the solenoid 14, and a plurality of guide rods are fixedly connected to the top side of the counter 6. The end of the guide rod away from the counter 6 is fixedly connected to the bottom wall plate of the bottom cover 3. The detector 23 is a voltage transformer, and two preset values are set in the detector 23, one is a low preset value, and the other is a high preset value. When the overvoltage in the reactor is lower than the low preset value, the solenoid 14 is not energized, and the telescopic rod 30 is retracted. When the overvoltage in the reactor is higher than the high preset value, the solenoid 14 is energized and the telescopic rod 30 is extended.

[0051] As a technical optimization scheme of the present invention, a hole groove is provided at the inner center of the bottom cover 3, and an annular slide rail 17 is provided at the middle section of the bottom cover 3. A sliding iron ring 22 is slidably sleeved in the slide rail 17, and a plurality of iron columns 16 are fixedly connected to the top of the sliding iron ring 22. A fixed iron ring 24 is provided above the iron column 16. The fixed iron ring 24 is fixedly embedded in the bottom cover 3. The iron column 16 is movably abutted against the fixed iron ring 24. A guide roller 26 is fixedly connected to the top of the fixed iron ring 24. The guide roller 26 passes through the top of the bottom cover 3, and a receiving assembly is provided on the top of the guide roller 26. The setting of the guide roller 26 can effectively guide the magnetism generated by the energized spiral coil 14 on the iron rod 13, so that the iron rod 13 and the slide rod 19 can be effectively disconnected and connected.

[0052] As a technical optimization solution of the present invention, the receiving assembly includes a rotating rod 29 rotatably connected to the top of the guide roller 26, a telescopic rod 30 is rotatably connected to the middle section of the rotating rod 29, one end of the telescopic rod 30 away from the rotating rod 29 is rotatably connected to the housing 1, the telescopic rod 30 is adapted to the spiral coil 14, and the top of the rotating rod 29 is movably abutted against the iron rod 13 through the telescopic rod 30. The setting of the telescopic rod 30, on the one hand, can separate the rotating rod 29 from the iron rod 13 when the device is powered on to prevent the magnetism of the iron rod 13 from being guided away, and on the other hand, it can also prevent the iron rod 13 from being effectively separated from the sliding rod 19 due to the long power-on time when the spiral coil 14 is not powered on.

[0053] As a technical optimization solution of the present invention, the top of the counter 6 is fixedly connected with a piston cylinder 27, the top of the piston cylinder 27 is located in a hole groove opened at the center of the bottom cover 3, the piston cylinder 27 is slidably sleeved with a piston plate 32, the top of the piston plate 32 is fixedly connected with a slide bar 19, the slide bar 19 is movably abutted with the iron rod 13, the iron rod 13 is electrically connected to the counter 6 through the slide bar 19, and the slide bar 19 is sleeved with a spring 18, and the two ends of the spring 18 are respectively fixedly connected to the bottom of the top plate of the piston cylinder 27 and the top of the piston plate 32. The setting of the piston plate 32 can, on the one hand, effectively guide the force applied by the spring 18, and on the other hand, can also effectively expand and contract the airbag 31, and when the airbag 31 expands, as the piston plate 32 descends, the side wall of the piston plate 32 can also effectively block the connection between the airbag 31 and the piston cylinder 27.

[0054] As a technical optimization solution of the present invention, the outer bottom of the sliding iron ring 22 is fixedly connected to an outer gear ring 21, and the outer gear ring 21 is rotatably connected to the inside of the bottom cover 3. The outer gear ring 21 is meshingly connected to the inner gear ring 20, and the inner gear ring 20 is fixedly connected to a rotating ring 9 and the inner gear ring 20 is fixedly connected to the inside of the rotating ring 9. A plurality of brush rollers 8 are fixedly connected to the outer bottom of the rotating ring 9, and the brush rollers 8 are in contact with the solar panel 4.

[0055] As a technical optimization solution of the present invention, a plurality of curved chute grooves 15 are provided on the outer wall plate of the slide rail 17, and a convex ball 25 is slidably connected inside the curved chute groove 15, and the convex ball 25 is fixedly connected to the middle part of the outer side of the sliding iron ring 22. The design of the curved chute groove 15 can effectively rotate the sliding iron ring 22, thereby enabling the brush roller 8 to effectively clean the solar panel 4.

[0056] As a technical optimization solution of the present invention, an airbag 31 is provided at the outer bottom of the piston cylinder 27. A through hole is provided at a position of the airbag 31 close to the inside of the piston cylinder 27. The airbag 31 is communicated with the inside of the piston cylinder 27 through this through hole. The airbag 31 is in movable abutment with the side wall plate of the hole groove at the center of the bottom cover 3. The setting of the airbag 31 can, on the one hand, effectively cut off the gas communication between the housing 1 and the outside world and play a role in dust prevention, and on the other hand, can also effectively replace the gas inside the housing 1.

[0057] As a technical optimization solution of the present invention, the piston cylinder 27, the piston plate 32 and the slide bar 19 are all made of iron. A plurality of annular extension plates 7 are fixedly connected to the outside of the housing 1. The fuse 11 is arranged at the inner top of the housing 1, and the overvoltage suppression unit 12 is arranged at the center inside the housing 1. The setting of the fuse 11 can effectively prevent the overvoltage suppression unit 12 from being burned out due to excessive overvoltage.

[0058] When the present invention is in use, the device is installed on the side of the reactor. When an overvoltage occurs in the reactor, after the detector 23 detects that the overvoltage exceeds the preset value, both ends of the solenoid coil 14 are electrified and the telescopic rod 30 contracts. After the solenoid coil 14 is electrified, the iron rod 13 generates magnetism, and then the iron rod 13 magnetically attracts the slide bar 19. Then, an effective path is formed between the second connecting wire 10, the fuse 11, the overvoltage suppression unit 12, the iron rod 13, the slide bar 19, the counter 6 and the first connecting wire 5 and the reactor. Thus, the overvoltage generated by the reactor is effectively consumed and suppressed, preventing the reactor from being damaged due to overvoltage. The solenoid coil 14 and the iron rod 13, based on the principle of an electromagnet, can, on the one hand, effectively improve the closing speed of the device, and on the other hand, when no overvoltage occurs in the reactor, the connection between the iron rod 13 and the slide bar 19 is disconnected, so that the device can effectively protect the overvoltage suppression unit 12, and thus effectively improve the service life of the overvoltage suppression unit 12.

[0059] During normal use, the solar panel 4 can effectively convert solar energy into electrical energy, and the electrical energy converted by solar energy can also effectively charge the power supply in the counter 6. This can be achieved by connecting devices such as a power adapter. This technology is prior art and will not be disclosed in detail again. The charging of the power supply in the counter 6 by solar energy can, on the one hand, effectively prevent the device from malfunctioning due to the lack of electrical energy in the power supply of the counter 6, and on the other hand, the solar panel 4 can also play a role in protecting the counter 6 from wind and rain to a certain extent, and thus effectively extend the service life of the counter 6.

[0060] In this device, when the detector 23 detects that the overvoltage in the reactor is lower than the preset value, the solenoid coil 14 is powered off, and then the magnetism in the iron rod 13 disappears. After the solenoid coil 14 is powered off, the telescopic rod 30 extends, and then the rotating rod 29 rotates around the end of the guiding roller 26, so that the end of the rotating rod 29 away from the guiding roller 26 abuts against the iron rod 13. After the guiding roller 26 abuts against the iron rod 13, the magnetism generated on the iron rod 13 due to the energization of the solenoid coil 14 will be guided out after power-off, and is guided to the fixed iron ring 24 through the rotating rod 29 and the guiding roller 26, so that the fixed iron ring 24 generates magnetism, and then the iron column 16 is attracted by the magnetism generated by the fixed iron ring 24, so that the iron column 16 drives the sliding iron ring 22 to move upward. When the sliding iron ring 22 rises, the convex ball 25 slides effectively in the curved chute 15, so that the convex ball 25 drives the sliding iron ring 22 to rotate through the curved chute 15. During the rotation of the sliding iron ring 22, effective rotation occurs between the outer tooth ring 21 and the inner tooth ring 20. At the same time, the outer tooth ring 21 moves in the vertical direction driven by the iron column 16, and the inner tooth ring 20 rotates driven by the sliding iron ring 22, so as to drive the brush roller 8 to effectively clean the outer surface of the solar panel 4, so that the efficiency of the solar panel 4 absorbing solar energy is effectively guaranteed.

[0061] When the overvoltage elimination time in the reactor is relatively long, the magnetism of the iron rod 13 is stronger. When the solenoid coil 14 is powered off, the magnetism in the iron rod 13 cannot be eliminated immediately. At this time, the elastic force exerted by the spring 18 on the piston plate 32 cannot separate the iron rod 13 from the sliding rod 19, so that the circuit cannot be effectively disconnected. Through the guidance of the rotating rod 29, the magnetic force in the iron rod 13 is weakened. And if the magnetic force is too strong and the fixed iron ring 24 cannot perform effective demagnetization work, after the magnetic force in the fixed iron ring 24 becomes stronger, it will attract the iron column 16 to abut against the fixed iron ring 24, so that the sliding iron ring 22 further eliminates the magnetic force of the iron rod 13 through the fixed iron ring 24, so that the spring 18 separates the sliding rod 19 from the iron rod 13 by the elastic force exerted on the piston plate 32, so that the device can effectively cut off the power supply to the overvoltage suppression unit 12 for protection.

[0062] After overvoltage occurs, when the iron rod 13 attracts the sliding rod 19 to rise, the rising of the sliding rod 19 will squeeze the spring 18, thereby effectively compressing the spring 18. During this process, the piston plate 32 will move upward, causing the gas in the airbag 31 to be sucked into the piston cylinder 27, thereby connecting the inside of the housing 1 with the outside world, enabling the air inside the housing 1 to be effectively replaced with the outside atmosphere. On the one hand, it can guide out the relatively high temperature inside the housing 1 to prevent the pressure inside the housing 1 from increasing due to the temperature rise of the components. On the other hand, through the replacement of gas, it can also prevent the internal current of the device from electrolyzing the ions in the air, resulting in a change in the magnetic field and thus affecting the operation of the iron rod 13. When the iron rod 13 separates from the sliding rod 19, the elastic force exerted by the spring 18 on the piston plate 32 will drive the sliding rod 19 to descend. At the same time, the piston plate 32 will squeeze the gas inside the piston cylinder 27, causing the airbag 31 to expand. The expansion of the airbag 31 will block the gap between the inner wall at the center of the bottom cover 3 and the piston cylinder 27, thereby sealing the inside of the housing 1 with the airbag 31 and preventing the entry of moist air and dust in the air into the inside of the housing 1.

[0063] The preferred embodiments of the present invention disclosed above are only used to help explain the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the invention to the specific embodiments described. Obviously, many modifications and changes can be made according to the content of this specification. These embodiments are selected and specifically described in this specification to better explain the principles and practical applications of the present invention, so that those skilled in the art can understand and utilize the present invention well. The present invention is only limited by the claims and their full scope and equivalents.

Claims

1. A cross-connected voltage limiting system for a series reactor, comprising an installation module, a protection module, an overvoltage suppression module and a switching module, characterized in that: The installation module is used to connect the voltage limiting system to both ends of the reactor; The protection module is used to protect the overvoltage suppression module; The overvoltage suppression module is used to suppress overvoltage in the reactor; The on-off module is used to control the opening or closing of the circuit where the overvoltage suppression module is located; The installation module comprises a first connecting line (5) and a second connecting line (10); The protection module comprises a housing (1) and a fuse (11); The overvoltage suppression module comprises an overvoltage suppression unit (12); The on-off module comprises an iron rod (13) and a sliding rod (19); The installation module is electrically connected to the overvoltage suppression module and the on-off module via a fuse (11); The cross-connected voltage limiting system for the series reactor is implemented by using a voltage limiting device, the voltage limiting device comprising a shell (1), the upper and lower ends of the shell (1) are respectively fixedly connected to a top cover (2) and a bottom cover (3), the second connecting line (10) passes through the top cover (2), the bottom of the overvoltage suppression unit (12) is fixedly connected to an iron rod (13), the outer side of the iron rod (13) is provided with a spiral coil (14), the iron rod (13) is movably electrically connected to a slide bar (19), the iron rod (13) is electrically connected to a counter (6) through the slide bar (19), a power source is provided inside the counter (6), one end of the counter (6) away from the iron rod (13) is electrically connected to the first connecting line (5), the bottom side of the bottom cover (3) is provided with an annular solar panel (4), the solar panel (4) is electrically connected to the power source in the counter (6); The solenoid coil (14) is electrically connected to a power source in the counter (6); a detector (23) for detecting overvoltage is fixedly connected to the top side of the counter (6); the detector (23) is electrically connected to the solenoid coil (14); a plurality of guide rods are fixedly connected to the top side of the counter (6); one end of the guide rod away from the counter (6) is fixedly connected to the bottom wall plate of the bottom cover (3).

2. The cross-connected voltage-limiting system for a series reactor according to claim 1, characterized in that, A hole groove is provided at the center of the bottom cover (3), an annular slide rail (17) is provided at the middle section of the bottom cover (3), a sliding iron ring (22) is slidably sleeved in the slide rail (17), a plurality of iron columns (16) are fixedly connected to the top of the sliding iron ring (22), a fixed iron ring (24) is arranged above the iron columns (16), the fixed iron ring (24) is fixedly embedded in the bottom cover (3), the iron columns (16) and the fixed iron ring (24) are movably abutted, a guide roller (26) is fixedly connected to the top of the fixed iron ring (24), the guide roller (26) passes through the top of the bottom cover (3), and a guide assembly is arranged on the top of the guide roller (26).

3. The cross-connected voltage-limiting system for a series reactor according to claim 2, characterized in that, The guiding assembly comprises a rotating rod (29) rotatably connected to the top of the guiding roller (26); a telescopic rod (30) is rotatably connected to the middle section of the rotating rod (29); an end of the telescopic rod (30) away from the rotating rod (29) is rotatably connected to the housing (1); the telescopic rod (30) is adapted to the spiral coil (14); and the top of the rotating rod (29) is movably abutted against the iron rod (13) via the telescopic rod (30).

4. A bridging type voltage limiting system for a series reactor according to claim 3, characterized in that, The top of the counter (6) is fixedly connected to a piston cylinder (27), the top of the piston cylinder (27) is located in a hole groove opened at the center of the bottom cover (3), the inside of the piston cylinder (27) is slidably sleeved with a piston plate (32), the top of the piston plate (32) is fixedly connected to a slide rod (19), the slide rod (19) is movably abutted against an iron rod (13), the iron rod (13) is electrically connected to the counter (6) through the slide rod (19), a spring (18) is sleeved on the slide rod (19), and the two ends of the spring (18) are respectively fixedly connected to the bottom of the top plate of the piston cylinder (27) and the top of the piston plate (32).

5. A bridging type voltage limiting system for a series reactor according to claim 4, characterized in that, The outer bottom of the sliding iron ring (22) is fixedly connected to an outer toothed ring (21), the outer toothed ring (21) is rotatably connected to the inside of the bottom cover (3), the outer toothed ring (21) is meshingly connected to an inner toothed ring (20), the inner toothed ring (20) is fixedly connected to a rotating ring (9), and the inner toothed ring (20) is fixedly connected to the inside of the rotating ring (9), and a plurality of brush rollers (8) are fixedly connected to the outer bottom of the rotating ring (9), and the brush rollers (8) are in contact with the solar panel (4).

6. The cross-connected voltage limiting system for a series reactor according to claim 5, characterized in that, A plurality of curved slide grooves (15) are provided on the outer wall plate of the slide rail (17), and a convex ball (25) is slidably connected inside the curved slide groove (15), and the convex ball (25) is fixedly connected to the middle part of the outer side of the sliding iron ring (22).

7. A bridging type voltage limiting system for a series reactor, characterized in that, according to claim 6 An airbag (31) is arranged at the bottom of the outer side of the piston cylinder (27), and a through hole is opened in the airbag (31) near the inside of the piston cylinder (27). The airbag (31) is connected with the inside of the piston cylinder (27) through the through hole, and the airbag (31) is movably abutted against the side wall plate of the hole groove at the center of the bottom cover (3); the piston cylinder (27), the piston plate (32) and the slide rod (19) are all made of iron products, and a plurality of annular extension plates (7) are fixedly connected to the outer side of the shell (1), the fuse (11) is arranged at the inner top of the shell (1), and the overvoltage suppression unit (12) is arranged at the inner center of the shell (1).

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