A composite three-phase filter reactor

Abstract

The utility model relates to a kind of composite three-phase filter reactor. Including the core yoke assembly of the "day" shape, the core yoke assembly includes top yoke, middle yoke and bottom yoke, left middle right three upper cores are equipped between top yoke and middle yoke, left middle right three lower cores are equipped between middle yoke and bottom yoke;Three upper cores are respectively wound with the same specification of upper first winding, upper second winding and upper third winding, three lower cores are respectively wound with the same specification of lower first winding, lower second winding and lower third winding, the specification of upper winding is different from the specification of lower winding;Top fixed seat is installed in the top of core yoke assembly, bottom fixed seat is installed in the bottom of core yoke assembly. The utility model provides a kind of composite three-phase filter reactor, simultaneously with two groups of different specifications and models of three-phase filter reactor, meet the composite application of scene, save installation space.

Description

Technical Field

[0001] The utility model belongs to the technical field of reactors, and particularly relates to a composite three-phase filter reactor. Background Art

[0002] In recent years, with the rapid development of power electronics and AC speed regulation technologies, an increasing number of semiconductor converter devices have been put into power supply systems. The voltages and currents generated by converters are mostly non-sinusoidal waveforms containing a large amount of harmonics, which cause serious pollution to the power grid. A reactor is a facility used for harmonic suppression in power supply systems. As an important structural form of reactors, three-phase filter reactors have been more and more widely used in current power systems due to their characteristics of reducing the influence of harmonic leakage magnetic field on the external environment and improving electromagnetic compatibility.

[0003] A reactor usually consists of an iron core, an iron yoke and windings. The reactor products in the prior art usually only have one set of the aforementioned iron core, iron yoke and windings, that is, only one set of reactor can be provided for application. However, in actual application scenarios, reactor products of multiple specifications are usually required to be used in combination. The existing form of reactor products can only be installed and used in multiple units at the same time, which occupies installation space. In summary, it is necessary to develop and design a composite three-phase filter reactor to solve the aforementioned technical problems. Contents of the Utility Model

[0004] The purpose of the utility model is to provide a composite three-phase filter reactor, which is simultaneously equipped with two sets of three-phase filter reactors of different specifications and models, meets the composite application of filter reactors on site, and saves installation space.

[0005] The technical scheme adopted by the utility model is: a composite three-phase filter reactor, comprising a "day"-shaped iron core and yoke assembly, the iron core and yoke assembly includes a top yoke, a middle yoke and a bottom yoke, three upper iron cores on the left, middle and right are arranged between the top yoke and the middle yoke, and three lower iron cores on the left, middle and right are arranged between the middle yoke and the bottom yoke; an upper first winding, an upper second winding and an upper third winding of the same specification are respectively wound on the three upper iron cores, and a lower first winding, a lower second winding and a lower third winding of the same specification are respectively wound on the three lower iron cores, the specification of the upper windings is different from that of the lower windings; a top fixing seat is installed on the top of the iron core and yoke assembly, and a bottom fixing seat is installed on the bottom of the iron core and yoke assembly.

[0006] Preferably, the upper first winding, the upper second winding and the upper third winding have the same structure, each comprising an upper coil and an upper insulating layer, and an upper leading-out copper bar is installed at the end of the upper coil; the lower first winding, the lower second winding and the lower third winding have the same structure, each comprising a lower coil and a lower insulating layer, and a lower leading-out copper bar is installed at the end of the lower coil.

[0007] Preferably, for each upper winding, one of the two upper lead-out copper busbars passes upward from the top rear part of the winding and bends backward, while the other passes downward from the bottom rear part of the winding and bends backward; for each lower winding, one of the two lower lead-out copper busbars passes upward from the top front part of the winding and bends forward and upward, while the other passes downward from the bottom front part of the winding and bends forward and upward.

[0008] Preferably, the top mounting base includes two top mounting plates located in front of and behind the top yoke, respectively. The two top mounting plates are fixedly connected to the top yoke by multiple bolts, and mounting holes are provided at both ends of the top mounting plates.

[0009] Preferably, the bottom fixing base includes two bottom supports arranged at the front and rear. Bottom mounting bases are installed and fixed between the left and right bottom ends of the two bottom supports. A bottom support base is provided between the two bottom supports, and the end of the bottom support base is fixedly connected to the two bottom mounting bases. The bottom yoke is stacked on the bottom support base and fixedly connected by two bottom fixing plates and bolts.

[0010] Preferably, the bottom mounting base is a C-shaped steel with mounting holes at both ends of the bottom plate.

[0011] The advantages and positive effects of this utility model are: This invention provides a composite three-phase filter reactor. Compared with existing three-phase filter reactor products, the three-phase filter reactor in this invention is a composite reactor product, having an upper iron core and a lower iron core. An upper winding is wound on the upper iron core, and a lower winding is wound on the lower iron core. The upper and lower windings have different specifications. Thus, this composite three-phase filter reactor simultaneously possesses two specifications of three-phase filter reactors (the lower part is the main reactor, and the upper part is the auxiliary reactor). These two specifications of three-phase filter reactors share the central yoke, thereby meeting the composite application requirements of filter reactors in the field.

[0012] This composite three-phase filter reactor saves installation space because its core and yoke assembly achieves shared yoke, reasonable combination of main and auxiliary reactors, and simultaneous installation using shared top and bottom mounting bases. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the main structure of this utility model; Figure 2 This is a side view of the structure of this utility model; Figure 3 yes Figure 1 A schematic diagram of the main structure of the iron core yoke assembly.

[0014] In the figure: 1. Top mounting plate; 2. Top iron yoke; 3. Upper first winding; 4. Upper second winding; 5. Upper third winding; 6. Middle iron yoke; 7. Lower second winding; 8. Lower leading-out copper bar; 9. Lower first winding; 10. Lower third winding; 11. Bottom support; 12. Bottom mounting base; 13. Bottom fixing plate; 14. Upper iron core; 15. Lower iron core; 16. Upper leading-out copper bar; 17. Bottom iron yoke; 18. Bottom support seat. Detailed Description of the Preferred Embodiments

[0015] To further understand the content, features and effects of the present utility model, the following embodiments are described in detail.

[0016] Please refer to Figure 1 , Figure 2 and Figure 3 , the composite three-phase filter reactor of the present utility model comprises a "day"-shaped iron core and yoke assembly, the iron core and yoke assembly includes a top iron yoke 2, a middle iron yoke 6 and a bottom iron yoke 17, three upper iron cores 14 on the left, middle and right are arranged between the top iron yoke 2 and the middle iron yoke 6, and three lower iron cores 15 on the left, middle and right are arranged between the middle iron yoke 6 and the bottom iron yoke 17.

[0017] An upper first winding 3, an upper second winding 4 and an upper third winding 5 of the same specification are respectively wound on the three upper iron cores 14, a lower first winding 9, a lower second winding 7 and a lower third winding 10 of the same specification are respectively wound on the three lower iron cores 15, and the specification of the upper windings is different from that of the lower windings. Therefore, the composite three-phase filter reactor is provided with a main reactor located at the lower part and an auxiliary reactor located at the upper part, and the two reactors share the middle iron yoke, so that the two reactors are reasonably combined.

[0018] In this embodiment, the upper first winding 3, the upper second winding 4 and the upper third winding 5 have the same structure, each includes an upper coil and an upper insulating layer, and an upper leading-out copper bar 16 is mounted at the end of the upper coil. Similarly, the lower first winding 9, the lower second winding 7 and the lower third winding 10 have the same structure, each includes a lower coil and a lower insulating layer, and a lower leading-out copper bar 8 is mounted at the end of the lower coil. The three groups of upper leading-out copper bars 16 are used for three-phase connection of the three upper windings, and the three groups of lower leading-out copper bars 8 are used for three-phase connection of the three lower windings.

[0019] In this embodiment, for each upper winding, one of the two upper copper busbars 16 extends upward from the top rear of the winding and bends backward, while the other extends downward from the bottom rear of the winding and bends backward, to facilitate wiring. Similarly, for each lower winding, one of the two lower copper busbars 8 extends upward from the top front of the winding and bends forward and upward, while the other extends downward from the bottom front of the winding and bends forward and upward, to facilitate wiring.

[0020] A top mounting bracket is installed on the top of the iron core yoke assembly, and a bottom mounting bracket is installed on the bottom of the iron core yoke assembly. Both the top and bottom mounting brackets are used to fix this composite three-phase filter reactor in the application scenario.

[0021] In this embodiment, the top mounting base includes two top mounting plates 1 located in front of and behind the top yoke 2, respectively. The two top mounting plates 1 are fixedly connected to the top yoke 2 by multiple bolts. Mounting holes are provided at both ends of the top mounting plates 1. During installation and fixing, mounting bolts are installed in the mounting holes at both ends of the top mounting plates 1 to fix the top mounting plates 1 to the field support, thereby ensuring the stability of this reactor product.

[0022] In this embodiment, the bottom fixing base includes two bottom supports 11 arranged front and rear. Bottom mounting seats 12 are installed and fixed between the left and right bottom ends of the two bottom supports 11. A bottom support seat 13 is provided between the two bottom supports 11, and the end of the bottom support seat 13 is fixedly connected to the two bottom mounting seats 12. A bottom yoke 17 is stacked on the bottom support seat 13 and fixedly connected by two bottom fixing plates 13 and bolts. Figure 2 As shown, the bottom fixing plate 13 is an angle steel, which is welded and installed on the bottom support base 13. The bottom yoke 17 is located between the vertical plates of the two bottom support bases 13. Bolts pass through the connecting holes provided on the bottom support base 13 and the bottom yoke 17 to fix the bottom support base 13 and the bottom yoke 17.

[0023] In this embodiment, the bottom mounting base 12 is a C-shaped steel, and mounting holes are provided at both ends of the bottom plate. For example... Figure 1 As shown, the C-shaped steel slots of the two bottom mounting bases 12 face outwards. When using this composite three-phase filter reactor, the two bottom mounting bases 12 are placed on a stable support platform and fixed with pre-embedded expansion bolts.

Claims

1. A composite three-phase filter reactor, characterized in that: comprises a core and yoke assembly in a shape of the Chinese character "ri", the core and yoke assembly includes a top yoke (2), a middle yoke (6) and a bottom yoke (17), three upper cores (14) at left, middle and right positions are arranged between the top yoke (2) and the middle yoke (6), and three lower cores (15) at left, middle and right positions are arranged between the middle yoke (6) and the bottom yoke (17); an upper first winding (3), an upper second winding (4) and an upper third winding (5) of the same specification are respectively wound on the three upper cores (14), a lower first winding (9), a lower second winding (7) and a lower third winding (10) of the same specification are respectively wound on the three lower cores (15), and the specification of the upper windings is different from that of the lower windings; a top fixing seat is mounted at the top of the core and yoke assembly, and a bottom fixing seat is mounted at the bottom of the core and yoke assembly.

2. The composite three-phase filter reactor as described in claim 1, characterized in that: the upper part... The first winding (3), the upper second winding (4) and the upper third winding (5) have the same structure, each comprising an upper coil and an upper insulating layer, and an upper leading-out copper bar (16) is mounted at the end of the upper coil; the lower first winding (9), the lower second winding (7) and the lower third winding (10) have the same structure, each comprising a lower coil and a lower insulating layer, and a lower leading-out copper bar (8) is mounted at the end of the lower coil.

3. The composite three-phase filter reactor as described in claim 2, characterized in that: Of the two upper leading-out copper bars (16) of each upper winding, one extends upward from the top of the rear part of the winding and is bent rearward, and the other extends downward from the bottom of the rear part of the winding and is bent rearward; of the two lower leading-out copper bars (8) of each lower winding, one extends upward from the top of the front part of the winding and is bent forward and upward, and the other extends downward from the bottom of the front part of the winding and is bent forward and upward.

4. The composite three-phase filter reactor as described in claim 3, characterized in that: The top fixing seat comprises two top mounting plates (1) respectively located at the front and rear of the top yoke (2), the two top mounting plates (1) are fixedly connected with the top yoke (2) by a plurality of bolts, and mounting holes are formed at both ends of each top mounting plate (1).

5. The composite three-phase filter reactor as described in claim 4, characterized in that: The bottom fixing seat comprises two bottom supports (11) arranged at the front and rear, a bottom mounting seat (12) is fixedly installed between the bottoms of the left ends of the two bottom supports (11) and between the bottoms of the right ends of the two bottom supports (11), a bottom support seat (18) is arranged between the two bottom supports (11), the end of the bottom support seat (18) is fixedly connected with the two bottom mounting seats (12), the bottom yoke (17) is stacked on the bottom support seat (18) and is fixedly connected by two front and rear bottom fixing plates (13) and bolts.

6. The composite three-phase filter reactor as described in claim 5, characterized in that: The bottom mounting seat (12) is a C-shaped steel, and mounting holes are formed at both ends of the bottom plate body.

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