Modular integrated chip-type saturable reactor group

Abstract

This invention discloses a modular integrated plate-type saturated reactor assembly, comprising a main body, a magnetic core, and a base. The magnetic core is fixedly mounted on the upper surface of the base, and several windings are fixedly arranged on its peripheral side. Several partition structures and busbar assemblies are provided on the magnetic core, and several guide brackets are positioned above it. A magnetically guided slider slides within each guide bracket. A driving mechanism is provided within the guide brackets to drive the magnetically guided sliders to slide along the guide brackets. When the driving mechanism is activated, the magnetically guided sliders move above two adjacent magnetic core partitions, connecting or disconnecting these two partitions in the magnetic circuit. This invention uses magnetically shielding sheets filled in the partition slots to divide the magnetic core into multiple independent partitions. Electromagnets drive the magnetically guided sliders to move above two adjacent magnetic core partitions, connecting or disconnecting these two partitions in the magnetic circuit, thereby changing the magnetic circuit length and volt-second product of the magnetic core, avoiding customized design and reducing repetitive work.

Description

Technical Field

[0001] This invention belongs to the field of reactor technology, and in particular relates to a modular integrated chip saturated reactor group. Background Technology

[0002] Saturated reactors are crucial components in DC transmission converter valves, protecting thyristors. At the moment of thyristor turn-on, the saturated reactor exhibits high impedance, suppressing the rapid increase of the inrush current; it also acts as a damper, preventing the first trough current from crossing zero during oscillations. As the load current increases, the saturated reactor gradually saturates, and after saturation, its impedance is very low, not increasing the active or reactive power losses of the converter valve. Under transient overvoltage conditions, the saturated reactor bears most of the peak voltage, reducing the voltage stress on the thyristors. Currently, in conventional DC engineering converter valves, a single saturated reactor typically protects 4 to 8 thyristors. Its core parameters include the volt-second product and inductance, and it usually adopts a structure with a toroidal core and plate windings.

[0003] However, existing saturated reactors have the following problems: due to the large differences in voltage and current levels between different projects, as well as the different parameters and series number of thyristors, the saturated reactors used in each project need to be checked and customized, resulting in a large amount of repetitive work and low efficiency, and making it impossible to achieve a universal configuration of the same type of reactor in different projects; in order to solve the above problems, a modular integrated chip saturated reactor group is proposed. Summary of the Invention

[0004] The purpose of this invention is to provide a modularly integrated chip saturated reactor bank to solve the problems mentioned in the background art.

[0005] To solve the above-mentioned technical problems, the present invention is achieved through the following technical solution: This invention relates to a modular integrated chip saturated reactor assembly, comprising a main body, which includes a magnetic core and a base. The magnetic core is fixedly mounted on the upper surface of the base. Several windings are fixedly arranged on the peripheral side of the magnetic core. Several partition structures are provided on the magnetic core to divide the magnetic core into multiple independent sections on the magnetic circuit. A busbar assembly is provided on the magnetic core for connecting the leads of the windings. Several guide brackets are provided above the magnetic core, and magnetic guide sliders are slidably arranged within the guide brackets. A driving mechanism is provided within the guide brackets to drive the magnetic guide sliders to slide along the guide brackets. When the driving mechanism is activated, the magnetic guide sliders move above two adjacent magnetic core sections, connecting or disconnecting the two magnetic core sections on the magnetic circuit.

[0006] Preferably, the partition structure includes a plurality of partition grooves formed on the periphery of the magnetic core, and magnetic shielding sheets fixedly installed in the partition grooves.

[0007] Preferably, the busbar assembly includes a first busbar fixedly disposed within the magnetic core and a second busbar fixedly disposed within the base.

[0008] Preferably, the driving mechanism includes a tension spring fixedly disposed on one surface of the inner wall of the guide bracket, an electromagnet fixedly disposed on the other surface of the inner wall of the guide bracket, and a main permanent magnet fixedly disposed on one surface of the magnetically conductive slider; one end of the tension spring is fixedly connected to the magnetically conductive slider; and an auxiliary permanent magnet is fixedly disposed on one surface of the electromagnet.

[0009] Preferably, the guide bracket has limit grooves on both sides, and a limit block is slidably provided in the limit groove, and the limit block is fixedly connected to the magnetic slider.

[0010] Preferably, the bottom surface of the magnetic slider is provided with a mounting groove, a disc-shaped elastic magnetic conductor is fixedly provided in the mounting groove, a movable magnetic block is slidably provided in the mounting groove, a cylindrical groove is provided on the upper surface of the mounting groove, a spring is fixedly provided in the cylindrical groove, the bottom end of the spring is fixedly connected to the movable magnetic block, and one surface of the movable magnetic block is set as an inclined surface.

[0011] Preferably, the bottom surface of the magnetic guide slider is further provided with a receiving groove, the peripheral side surface of the movable magnetic guide block is provided with a plurality of guide grooves, and the peripheral side surface of the inner wall of the receiving groove is fixedly provided with a plurality of guide rods, the guide rods being slidably disposed in the guide grooves.

[0012] Preferably, the base has several heat dissipation vents on its peripheral side.

[0013] The present invention has the following beneficial effects: This invention realizes the modular integration and field reconfigurable configuration of saturated reactors. Specifically, it achieves this by setting up an isolation structure and a magnetic guide slider: the magnetic core is divided into multiple independent sections by filling the isolation slot with magnetic shielding sheets. An electromagnet drives the magnetic guide slider to move above two adjacent magnetic core sections, so that the two magnetic core sections are connected or disconnected in the magnetic circuit, thereby changing the magnetic circuit length and volt-second product of the magnetic core. The same reactor can be adapted to the engineering requirements of different thyristor stages, avoiding customized design and reducing repetitive work. This invention achieves adaptive tight fit between the magnetic slider and the magnetic core. Specifically, it is achieved by setting a movable magnetic block and a disc-shaped elastic magnetic conductor: the movable magnetic block presses the surface of the magnetic core with a spring, and the disc-shaped elastic magnetic conductor has both elasticity and magnetic conduction functions, always pressing the surface of the magnetic core. At the same time, the inclined surface at one end of the movable magnetic block pushes it back into the groove when the slider slides to avoid jamming, thereby eliminating air gaps and ensuring low-resistance magnetic circuit conduction. This invention achieves vertical guidance and anti-tilting of the movable magnetic block. Specifically, it is achieved by setting a guide groove and a guide rod: the guide groove on the peripheral side of the movable magnetic block slides in conjunction with the guide rod on the inner wall of the receiving groove, restricting the movable magnetic block to move only in the vertical direction, preventing it from tilting during up and down movement, ensuring that the bottom surface of the movable magnetic block is in full contact with the surface of the magnetic core, and improving contact reliability and service life.

[0014] Of course, any product implementing this invention does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description

[0015] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 for Figure 1 A magnified view of the structure at point A in the middle; Figure 3 This is a cross-sectional structural diagram of the present invention; Figure 4 This is a schematic diagram of the magnetic circuit reconfigurator of the present invention; Figure 5 for Figure 4 Internal structure diagram; Figure 6 This is a schematic diagram of the composite magnetic slider of the present invention; Figure 7 for Figure 6 A schematic diagram of the internal structure.

[0017] The components represented by each number in the attached diagram are listed below: 1. Main body of the equipment; 2. Magnetic core; 3. Winding; 4. Base; 5. Guide bracket; 6. Isolation slot; 7. Magnetic shielding sheet; 8. First busbar; 9. Second busbar; 10. Heat dissipation vent; 11. Magnetic guide slider; 12. Electromagnet; 13. Auxiliary permanent magnet; 14. Limiting slot; 15. Limiting block; 16. Main permanent magnet; 17. Tension spring; 18. Disc-shaped elastic magnetic guide; 19. Mounting slot; 20. Receiving slot; 21. Columnar slot; 22. Spring; 23. Movable magnetic guide block; 24. Guide slot; 25. Guide rod. Detailed Implementation

[0018] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0019] In the description of this invention, it should be understood that the terms "upper," "middle," "outer," "inner," etc., which indicate orientation or positional relationship, are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the components or elements referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as limiting this invention.

[0020] Please see Figures 1-7 As shown, the present invention is a modular integrated chip saturated reactor group, including a device body 1. The device body 1 includes a magnetic core 2 and a base 4. The magnetic core 2 is fixedly installed on the upper surface of the base 4, and several windings 3 are fixedly provided on the peripheral side of the magnetic core 2.

[0021] Please combine Figures 1 to 4 The magnetic core 2 is provided with several partition structures to divide the magnetic core 2 into multiple independent sections on the magnetic circuit; the magnetic core 2 is provided with a busbar assembly to connect the lead-out end of the winding 3; several guide brackets 5 are provided above the magnetic core 2, and magnetic guide sliders 11 are slidably arranged in the guide brackets 5; a driving mechanism is provided in the guide brackets 5 to drive the magnetic guide sliders 11 to slide along the guide brackets 5; when the driving mechanism is activated, the magnetic guide sliders 11 move to the top of two adjacent magnetic core 2 sections, so that the two magnetic core 2 sections are connected or disconnected on the magnetic circuit.

[0022] Please combine Figure 1 and Figure 2 The partition structure includes several partition grooves 6 formed on the sides of the magnetic core 2, and magnetic shielding sheets 7 fixedly installed in the partition grooves 6. Through the above technical solution, the magnetic shielding sheets 7 divide the magnetic core 2 into multiple independent magnetic circuit partitions on the magnetic circuit. Each partition can independently control its magnetic flux path, providing a basis for subsequent magnetic circuit reconstruction.

[0023] Please combine Figure 3 The busbar assembly includes a first busbar 8 fixedly disposed in the magnetic core 2 and a second busbar 9 fixedly disposed in the base 4. The two ends of the winding 3 are electrically connected to the first busbar 8 and the second busbar 9, respectively.

[0024] Please combine Figure 4 and Figure 5The driving mechanism includes a tension spring 17 fixedly disposed on one surface of the inner wall of the guide bracket 5, an electromagnet 12 fixedly disposed on the other surface of the inner wall of the guide bracket 5, and a main permanent magnet 16 fixedly disposed on one surface of the magnetic slider 11; one end of the tension spring 17 is fixedly connected to the magnetic slider 11 and is used to pull the magnetic slider 11 to the initial position; an auxiliary permanent magnet 13 is fixedly disposed on one surface of the electromagnet 12 and is used to maintain the position of the magnetic slider 11 after the electromagnet 12 is de-energized.

[0025] Please combine Figure 5 Limiting grooves 14 are provided on both sides of the guide bracket 5. Limiting blocks 15 are slidably arranged in the limiting grooves 14. The limiting blocks 15 are fixedly connected to the magnetic slider 11, thereby limiting the sliding stroke of the magnetic slider 11 and preventing it from falling out of the guide bracket 5.

[0026] Through the above technical solution, when the electromagnet 12 is energized, the electromagnet 12 generates a magnetic field that attracts the main permanent magnet 16, overcomes the tension of the tension spring 17, and drives the magnetic guide slider 11 to slide along the guide bracket 5 to the top of the two adjacent magnetic core 2 sections, so that the bottom surface of the magnetic guide slider 11 contacts the two magnetic core 2 sections, thereby connecting the two magnetic core 2 sections in the magnetic circuit; when the electromagnet 12 is de-energized, the auxiliary permanent magnet 13 maintains the position of the magnetic guide slider 11, keeping it in the connected state; when it is necessary to disconnect, a reverse current is applied to the electromagnet 12, the electromagnet 12 generates a reverse magnetic field that weakens the holding force of the auxiliary permanent magnet 13, the tension spring 17 pulls the magnetic guide slider 11 back to the initial position, and the two magnetic core 2 sections return to the independent state isolated by the magnetic shielding sheet 7.

[0027] Please combine Figures 5 to 7 The bottom surface of the magnetic slider 11 is provided with an installation groove 19 and a receiving groove 20. A disc-shaped elastic magnetic conductor 18 is fixedly installed in the installation groove 19. A movable magnetic block 23 is slidably installed in the installation groove 19. A cylindrical groove 21 is provided on the upper surface of the installation groove 19. A spring 22 is fixedly installed in the cylindrical groove 21. The bottom end of the spring 22 is fixedly connected to the movable magnetic block 23. One surface of the movable magnetic block 23 is set as an inclined surface. Through the above technical solution, when the magnetic guide slider 11 is in the closed position, the disc-shaped elastic magnetic guide 18 and the movable magnetic guide block 23 press the upper surfaces of the two magnetic core 2 sections under the action of the spring 22, eliminating the air gap between the magnetic guide slider 11 and the magnetic core 2, and ensuring low resistance magnetic circuit conduction; when the magnetic guide slider 11 slides to the closed position, the inclined surface of the bottom of the movable magnetic guide block 23 contacts the edge of the magnetic core 2, pushing the movable magnetic guide block 23 upward into the mounting groove 19 to avoid jamming; when the magnetic guide slider 11 reaches the closed position, the spring 22 pushes the movable magnetic guide block 23 downward, so that it fits tightly against the surface of the magnetic core 2.

[0028] Please combine Figure 6 and Figure 7The movable magnetic block 23 has several guide grooves 24 on its peripheral side, and several guide rods 25 are fixedly installed on the peripheral side of the inner wall of the receiving groove 20. The guide rods 25 are slidably disposed in the guide grooves 24. Through the above technical solution, the sliding cooperation between the guide rods 25 and the guide grooves 24 restricts the movable magnetic block 23 to move only in the vertical direction, preventing it from tilting during up and down movement, ensuring that the bottom surface of the movable magnetic block 23 is in full contact with the surface of the magnetic core 2, and improving contact reliability and service life.

[0029] Please combine Figure 1 The base 4 has several heat dissipation vents 10 on its peripheral side to dissipate the heat generated by the reactor group during operation to the external environment.

[0030] Working principle: This reactor group is installed in the DC transmission converter valve. The winding 3 is connected to the thyristor circuit through the first busbar 8 and the second busbar 9. According to the number of thyristor series stages and voltage level requirements of the project, the position of the magnetic guide slider 11 is adjusted by controlling the energization state of the electromagnet 12 in the drive mechanism, thereby changing the magnetic circuit connection state of the magnetic core 2.

[0031] When a larger volt-second product is needed to protect more thyristor stages, the electromagnet 12 is energized, driving the magnetic slider 11 to move to the closed position, connecting two adjacent magnetic cores 2 in the magnetic circuit, increasing the magnetic circuit length, and obtaining a larger volt-second product; when a smaller volt-second product is needed to protect fewer thyristor stages, the electromagnet 12 is energized in the reverse direction, and the tension spring 17 pulls the magnetic slider 11 back to the open position, the magnetic cores 2 return to the state of multiple independent partitions, the magnetic circuit length decreases, and a smaller volt-second product is obtained.

[0032] During the movement of the magnetic guide slider 11, the inclined surface of the bottom of the movable magnetic guide block 23 causes it to automatically retract into the mounting groove 19 when it encounters the edge of the magnetic core 2, preventing jamming. After reaching the closed position, the spring 22 pushes the movable magnetic guide block 23 out, making it fit tightly against the surface of the magnetic core 2. At the same time, the disc-shaped elastic magnetic guide body 18 also fits tightly against the surface of another magnetic core 2 section, jointly ensuring low-resistance magnetic circuit conduction. The cooperation between the guide rod 25 and the guide groove 24 ensures that the movable magnetic guide block 23 always maintains vertical movement and will not tilt.

[0033] Based on the above principles, this reactor group can adjust the volt-second product on-site according to the parameter requirements of different projects without the need for redesign, thus achieving modular integration and universal configuration.

[0034] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the invention. In this specification, illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0035] The preferred embodiments of the present invention disclosed above are merely illustrative of the invention. These preferred embodiments do not exhaustively describe all details, nor do they limit the invention to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of the invention, thereby enabling those skilled in the art to better understand and utilize the invention. The invention is limited only by the claims and their full scope and equivalents.

Claims

1. A modular integrated chip-type saturable reactor group comprising a device body (1) comprising a magnetic core (2) and a base (4), the magnetic core (2) being fixedly installed on the upper surface of the base (4), characterized in that, The magnetic core (2) has several windings (3) fixedly provided on its peripheral side surface, and the magnetic core (2) has several partition structures for dividing the magnetic core (2) into multiple independent sections on the magnetic circuit; The magnetic core (2) is provided with a busbar assembly for connecting the lead-out end of the winding (3); several guide brackets (5) are provided above the magnetic core (2), and a magnetic guide slider (11) is slidably provided in the guide brackets (5). The guide bracket (5) is provided with a driving mechanism for driving the magnetic slider (11) to slide along the guide bracket (5); when the driving mechanism is activated, the magnetic slider (11) moves to the top of the two adjacent magnetic core (2) partitions, so that the two magnetic core (2) partitions are connected or disconnected on the magnetic circuit.

2. A modular integrated distribution panel according to claim 1, characterized in that, The partition structure includes several partition grooves (6) formed on the periphery of the magnetic core (2), and magnetic shielding sheets (7) fixedly installed in the partition grooves (6).

3. A modular integrated distribution panel according to claim 2, wherein, The busbar assembly includes a first busbar (8) fixedly disposed in the magnetic core (2) and a second busbar (9) fixedly disposed in the base (4).

4. A modular integrated distribution panel according to claim 1, wherein, The driving mechanism includes a tension spring (17) fixedly disposed on one surface of the inner wall of the guide bracket (5), an electromagnet (12) fixedly disposed on the other surface of the inner wall of the guide bracket (5), and a main permanent magnet (16) fixedly disposed on one surface of the magnetic slider (11); one end of the tension spring (17) is fixedly connected to the magnetic slider (11); an auxiliary permanent magnet (13) is fixedly disposed on one surface of the electromagnet (12).

5. A modularly integrated chip saturated reactor bank according to claim 4, characterized in that, The guide bracket (5) has limit grooves (14) on both sides, and a limit block (15) is slidably provided in the limit groove (14). The limit block (15) is fixedly connected to the magnetic slider (11).

6. A modularly integrated chip saturated reactor bank according to claim 5, characterized in that, The bottom surface of the magnetic slider (11) is provided with an installation groove (19), a disc-shaped elastic magnetic conductor (18) is fixedly provided in the installation groove (19), a movable magnetic block (23) is slidably provided in the installation groove (19), a cylindrical groove (21) is provided on the upper surface of the installation groove (19), a spring (22) is fixedly provided in the cylindrical groove (21), the bottom end of the spring (22) is fixedly connected to the movable magnetic block (23), and one surface of the movable magnetic block (23) is set as an inclined surface.

7. A modularly integrated chip saturated reactor bank according to claim 6, characterized in that, The bottom surface of the magnetic guide slider (11) is also provided with a receiving groove (20), and the periphery of the movable magnetic block (23) is provided with a number of guide grooves (24). The periphery of the inner wall of the receiving groove (20) is fixedly provided with a number of guide rods (25), and the guide rods (25) are slidably disposed in the guide grooves (24).

8. A modularly integrated chip saturated reactor bank according to claim 6, characterized in that, The base (4) has several heat dissipation vents (10) on its peripheral side.

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