CN219677044U

CN219677044U - Stepless adjustable inductance value reactor with three-phase variable air gap

Info

Publication number: CN219677044U
Application number: CN202320899112.XU
Authority: CN
Inventors: 周海峰; 李希煌; 吴智富
Original assignee: Anhui Yingdakot Magnetoelectric Technology Co ltd
Current assignee: Anhui Yingdakot Magnetoelectric Technology Co ltd
Priority date: 2023-04-20
Filing date: 2023-04-20
Publication date: 2023-09-12
Anticipated expiration: 2033-04-20

Abstract

The utility model provides a three-phase stepless adjustable inductance value reactor with a variable air gap, which comprises a mounting base, an iron core fixing assembly, a coil fixing assembly and an air gap adjusting assembly, wherein the mounting base is provided with a plurality of magnetic poles; the iron core fixing assembly is used for installing the iron core, the coil fixing assembly is used for fixing the coil, the air gap adjusting assembly comprises a supporting portion and an adjusting portion, the adjusting portion is connected with the iron core fixing assembly, the adjusting portion moves relative to the supporting portion and drives the iron core fixing assembly to move, and the adjusting portion is at least provided with two adjusting portions and is connected with two ends of the iron core fixing assembly respectively to adjust the inclination of the iron core fixing assembly. The utility model can directly adjust the size of the air gap of the iron core, can ensure the unification of the three-phase air gap, ensures the consistency of the three-phase inductance, adopts a stepless adjustment mode, has wide adjustable range on the premise of pairwise arrangement of the iron core fixing component, the air gap adjusting component and the like, flexibly adjusts the inductance of the reactor, and improves the practicability of the three-phase reactor.

Description

Stepless adjustable inductance value reactor with three-phase variable air gap

Technical Field

The utility model relates to the technical field of reactors, in particular to a three-phase stepless inductance-adjustable reactor with a variable air gap.

Background

The reactor is also called an inductor, has very wide application in a circuit, and has a certain inductive property because of the electromagnetic induction effect in the circuit, so that the reactor can play a role in preventing current change. The reactor is generally composed of a bracket, a coil winding, an iron yoke, an iron core clamping plate, an iron core column, and the like, and is divided into a single-phase reactor for a single-phase circuit having a single set of coils and a three-phase reactor for a three-phase circuit having three sets of coils.

The traditional adjustable three-phase inductor generally changes inductance by adjusting the number of turns of a coil, and meets the parameter requirement of the inductance through a multi-tap structure. The mode of adjusting the air gap amount in the inductance magnetic conduction loop has larger advantages than the mode of adjusting the number of turns of the coil, and becomes an important direction of research of magnetic device manufacturers.

The Chinese patent with the bulletin number of CN213519528U discloses a small-capacity smoothing reactor, which comprises a box body, an iron core component and an adjusting component, wherein the iron core component is arranged in the box body and comprises an iron core column, an iron yoke and a coil, the coil is wound on the iron core column, the iron yoke comprises an upper iron yoke and a lower iron yoke, and an air gap is arranged between the upper iron yoke and the lower iron yoke and the iron core column; the adjusting component comprises a connecting piece, an adjusting transverse plate and an adjusting rod of a telescopic structure, one end of the connecting piece penetrates through the top end of the box body and is connected with the upper iron yoke, the other end of the connecting piece is connected with the adjusting transverse plate, the top end of the adjusting rod is connected with the adjusting transverse plate, the bottom end of the adjusting rod is connected with the top surface of the box body, and the adjusting rod stretches or shortens to control the upper iron yoke to move up and down so as to adjust the size of an air gap between the top ends of the upper iron yoke and the iron core column. The lower iron yoke and the iron core center pillar are fixed in the scheme, only the upper iron yoke can be adjusted, and the lower iron yoke is not suitable for the three-phase reactor, and has a further optimization space.

Disclosure of Invention

The purpose of the utility model is that: aiming at the defects in the background technology, the three-phase reactor with the stepless adjustable air gap quantity and wide adjustment range is provided.

In order to achieve the aim, the utility model provides a three-phase stepless inductance-adjustable reactor with a variable air gap, which comprises a mounting base, an iron core fixing component, a coil fixing component and an air gap adjusting component, wherein the iron core fixing component, the coil fixing component and the air gap adjusting component are arranged on the mounting base;

the iron core fixing assembly is used for installing an iron core and at least comprises a first iron core part and a second iron core part, and a gap between the first iron core part and the second iron core part is an air gap;

the coil fixing assembly is used for fixing a coil, the coil comprises a primary coil and a secondary coil, and the primary coil and the corresponding secondary coil with different phases are wound on an iron core center post corresponding to the iron core;

the air gap adjusting assembly comprises a supporting part and an adjusting part, the adjusting part is connected with the iron core fixing assembly, the adjusting part moves relative to the supporting part and drives the iron core fixing assembly to move, and the adjusting part is at least provided with two adjusting parts which are respectively connected with two ends of the iron core fixing assembly so as to adjust the inclination of the iron core fixing assembly.

Further, the iron core fixing components are arranged in two groups, and are respectively located at two sides of the coil fixing components, one group of the iron core fixing components is connected with the first iron core part, the other group of the iron core fixing components is connected with the second iron core part, and the coil fixing components and the iron core fixing components are arranged in two groups in a one-to-one correspondence.

Further, the supporting part comprises a fixed plate fixedly arranged, the adjusting part comprises an adjusting rod movably arranged, a threaded hole is formed in the fixed plate, the adjusting rod is provided with external threads and matched with the threaded hole, a connecting plate is arranged at the first end of the adjusting rod, and the connecting plate is connected with the iron core fixing assembly.

Further, the connecting plate is provided with a mounting hole, a bearing is arranged in the mounting hole, and the first end of the adjusting rod is rotationally connected with the connecting plate through the bearing and synchronously moves with the connecting plate.

Further, a second end of the connecting plate is provided with a rotating handle.

The scheme of the utility model has the following beneficial effects:

the stepless adjustable inductance value reactor with the three-phase variable air gap can directly adjust the air gap of the iron core, ensure the uniformity of the three-phase air gap, ensure the consistency of the three-phase inductance, improve the adjustment reliability, and adopt a stepless adjustment mode, the adjustable range is wide on the premise that the iron core fixing component, the air gap adjusting component and the like are arranged in pairs, so that the inductance value of the reactor can be flexibly adjusted, the operation is convenient, and the practicability of the three-phase reactor is improved;

other advantageous effects of the present utility model will be described in detail in the detailed description section which follows.

Drawings

FIG. 1 is a schematic diagram of the overall structure of the present utility model;

fig. 2 is a schematic diagram of the iron core structure of the present utility model;

FIG. 3 is a schematic view of an air gap adjusting assembly according to the present utility model.

[ reference numerals description ]

10-mounting a base; 20-an iron core fixing assembly; 30-a coil fixing assembly; 40-an air gap adjustment assembly; 41-a fixing plate; 42-adjusting the rod; 43-connecting plates; 44-bearings; 45-rotating the handle; 46-mounting posts; 47-mounting blocks; 50-iron core; 51-an iron core center post; 52-an upper yoke; 53-lower yoke; 54-air gap; 60-coil.

Detailed Description

In order to make the technical problems, technical solutions and advantages to be solved more apparent, the following detailed description will be given with reference to the accompanying drawings and specific embodiments. It will be apparent that the described embodiments are some, but not all, embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model. In addition, the technical features of the different embodiments of the present utility model described below may be combined with each other as long as they do not collide with each other.

In the description of the present utility model, it should be noted that the directions or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present utility model, it should be noted that, unless explicitly stated and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, a locked connection, a removable connection, or an integral connection; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

As shown in fig. 1, an embodiment of the present utility model provides a three-phase variable air gap stepless adjustable inductance value reactor, which comprises a mounting base 10, a core fixing assembly 20, a coil fixing assembly 30 and an air gap adjusting assembly 40, which are disposed on the mounting base 10.

Meanwhile, as shown in fig. 2, the core fixing assembly 20 is used for installing the core 50, and for a three-phase reactor, the core 50 generally includes three core legs 51, an upper yoke 52 connected to a first end of the core leg 51, and a lower yoke 53 connected to a second end of the core leg 51, so as to form an inductive magnetic loop. The wound coil 60 includes three sets of primary and secondary coils to correspond to three phases. Each phase of primary coil and secondary coil is wound on a corresponding iron core center pillar 51, and the primary coil may be located on the outer layer, the secondary coil may be located on the inner layer, or the primary coil may be located on the inner layer, and the secondary coil may be located on the outer layer.

Specifically, in this embodiment, the core leg 51 is broken, the core 50 includes a first core portion including an upper yoke 52 and an upper half portion of the three core legs 51, and a second core portion including a lower yoke 53 and a lower half portion of the three core legs 51, and the gap between the upper half portion and the lower half portion of the core leg 51 is an air gap 54, and the air gap 54 is adjusted by adjusting the distance between the first core portion and the second core portion, thereby changing the inductance value.

The wound coil is further pressed and fixed by the outer coil fixing assembly 30 so as to be kept at a corresponding position of the reactor. The air gap adjusting assembly 40 includes a supporting portion and an adjusting portion, wherein the adjusting portion is connected with the iron core fixing assembly 20, and when the adjusting portion moves relative to the supporting portion, the iron core fixing assembly 20 can be driven to move, so as to adjust the relative positions of the first iron core portion and the second iron core portion, and adjust and control the size of the air gap 54.

Based on the large length dimension of the upper yoke 52, the lower yoke 53, etc. of the three-phase reactor (to accommodate the installation of the three core center posts 51), the length dimension of the core fixing assembly 20 also needs to be increased for adaptation. Therefore, driving in the width direction of the core fixing assembly 20 using a single adjustment portion may cause the core fixing assembly 20 to move obliquely or the like, resulting in inaccurate adjustment of the inductance value. Based on this, in this embodiment, the adjusting parts are provided with a pair, and are respectively connected with two ends of the iron core fixing component 20, and when the air gap 54 is adjusted, the adjusting parts at the two ends are simultaneously operated, so that the iron core fixing component 20 can translate without tilting, thereby ensuring that the air gaps 54 at the three positions after adjustment are the same in size, and ensuring the consistency of the three-phase inductance.

It will be appreciated that when there is a small difference in the finished dimensions of the three core legs 51, if the core fixing component 20 is not tilted at all, the size of the air gap 54 may be non-uniform, and at this time, the adjustment portion may cause the core fixing component 20 to tilt slightly, so as to achieve the uniformity of the three-phase inductance.

It should be noted that, in the present embodiment, two sets of core fixing assemblies 20 are provided, which are respectively located at two sides of the coil fixing assembly 30, that is, the coil 60, wherein one set of core fixing assemblies 20 is connected with the first core portion, and the other set of core fixing assemblies 20 is connected with the second core portion. Correspondingly, the coil fixing assemblies 30 are also provided with two groups (each group of coil fixing assemblies 30 comprises a pair of adjusting parts) and are respectively connected with the iron core fixing assemblies 20 on two sides, so that the positions of the first iron core part and the second iron core part can be respectively adjusted, the first iron core part and the second iron core part are ensured to be symmetrical relative to the central position as much as possible, and meanwhile, the adjustment is more flexible and the adjustment range is wider.

Also as shown in fig. 3, in the present embodiment, the supporting portion includes a fixed plate 41 fixedly provided, and the adjusting portion includes an adjusting lever 42 movably provided. Wherein, screw holes have been seted up at the both ends of fixed plate 41, and regulation pole 42 is provided with the external screw thread and cooperatees with the screw hole, and the first end of regulation pole 42 is provided with connecting plate 43, and connecting plate 43 is connected with the corresponding end of iron core fixed subassembly 20. Therefore, when the adjusting lever 42 rotates, it can move forward and backward relative to the fixing plate 41, and drive the connecting plate 43 and the corresponding end of the core fixing assembly 20 to move forward and backward.

It should be noted that, the connection plate 43 and the core fixing assembly 20 are welded and fixed, and the adjustment rod 42 needs to be rotated to move back and forth, so in this embodiment, the connection plate 43 is further provided with a mounting hole, a bearing 44 is disposed in the mounting hole, and a first end of the adjustment rod 42 is inserted into the mounting hole and is rotationally connected with the connection plate 43 through the bearing 44. Meanwhile, the adjusting lever 42 needs to be moved forward and backward synchronously with the connecting plate 43, so the first end of the adjusting lever 42 is provided with a T shape, which is caught in the gap between the bearing 44 and the bottom surface of the mounting hole, and is limited to be moved forward and backward synchronously with the connecting plate 43.

As a preferred embodiment, the second end of the connecting plate 43 in this embodiment is further provided with a rotating handle 45, and the adjusting rod 42 can be manually rotated conveniently by rotating the handle 45 to control the front and rear positions, thereby improving the convenience of operation.

It should be noted that, in this embodiment, the fixing plates 41 of the air gap adjusting assemblies 40 on both sides are connected and installed as a whole through a plurality of mounting posts 46, the middle of each mounting post 46 is provided with a mounting block 47, the outer surface of each mounting block 47 is used for winding the coil 60, and the inner surface is used for limiting and guiding the iron core fixing assembly 20, so that the upper and lower positions of the iron core fixing assembly 20 cannot deviate in the adjusting process. The core fixing assembly 20 includes a core clamping plate, the outer side wall of which contacts the mounting block 47, and the inner side surface of which contacts and clamps the core 50.

The stepless adjustable inductance value reactor of three-phase variable air gap that this embodiment provided can directly adjust the air gap 54 size of iron core 50, and can guarantee the unification of three-phase air gap 54, ensure the uniformity of three-phase inductance, promoted the reliability of adjusting, for stepless regulation mode based on the screw-thread fit of adjusting pole 42 and fixed plate 41, adjustable range is wide under the prerequisite that iron core fixed subassembly 20, air gap adjustment subassembly 40 etc. set up in pairs to nimble inductance value of adjusting the reactor, the simple operation has promoted the practicality of reactor.

While the foregoing is directed to the preferred embodiments of the present utility model, it will be appreciated by those skilled in the art that various modifications and adaptations can be made without departing from the principles of the present utility model, and such modifications and adaptations are intended to be comprehended within the scope of the present utility model.

Claims

1. The stepless inductance-adjustable reactor with the three-phase variable air gap is characterized by comprising a mounting base, an iron core fixing assembly, a coil fixing assembly and an air gap adjusting assembly, wherein the iron core fixing assembly, the coil fixing assembly and the air gap adjusting assembly are arranged on the mounting base;

2. The reactor with the stepless adjustable inductance value of the three-phase variable air gap according to claim 1, wherein two groups of iron core fixing components are arranged, the iron core fixing components are respectively positioned on two sides of the coil fixing components, one group of iron core fixing components are connected with the first iron core part, the other group of iron core fixing components are connected with the second iron core part, and the two groups of iron core fixing components are arranged in a one-to-one correspondence manner.

3. The reactor with the stepless adjustable inductance value of the three-phase variable air gap according to claim 1, wherein the supporting part comprises a fixed plate which is fixedly arranged, the adjusting part comprises an adjusting rod which is movably arranged, a threaded hole is formed in the fixed plate, the adjusting rod is provided with external threads and is matched with the threaded hole, a connecting plate is arranged at the first end of the adjusting rod, and the connecting plate is connected with the iron core fixing component.

4. A three-phase variable air gap stepless inductance value-adjustable reactor according to claim 3, wherein the connecting plate is provided with a mounting hole, a bearing is arranged in the mounting hole, and the first end of the adjusting rod is rotationally connected with the connecting plate through the bearing and synchronously moves with the connecting plate.

5. A three-phase variable air gap stepless inductance-adjustable reactor according to claim 3, wherein the second end of the connecting plate is provided with a rotating handle.