Electric reactor iron core structure with nonporous iron core

Abstract

The utility model belongs to the field of electric power system equipment, and provides a reactor iron core structure with a nonporous iron core, which comprises an iron core piece, a pulling plate piece, an upper clamping piece, a lower clamping piece, a binding piece and a first pulling rod piece. According to the iron core piece, an open pore structure is omitted, the iron core column is of a vacuum overall pouring structure, and a clamping and binding structure is adopted for fixing, so that the product structure can be guaranteed, and meanwhile, the problems that a magnetic circuit of a silicon steel sheet is changed due to punching, magnetic flux is distributed unevenly, and eddy current loss and magnetic hysteresis loss are increased are solved; and punching may cause local temperature rise, influence the thermal stability and long-term reliability of the transformer, and may influence the noise level of the transformer.

Description

Technical Field

[0001] The utility model belongs to the field of power system equipment, and particularly relates to a reactor core structure without holes in the core. Background Art

[0002] Reactors are used in circuits for reactive power compensation, current limiting, current stabilization, ripple smoothing, filtering, damping, phase shifting, etc., and are widely used in important fields such as substations, subways, airports, etc. They are very important equipment in the power system.

[0003] Problems existing in current products: Since the core of the reactor not only includes silicon steel sheets but also contains air gaps, the noise and losses of the reactor product are greater than those of transformer products with the same capacity. In the traditional manufacturing process of reactors, the core is usually formed by stacking multiple layers of silicon steel sheets, and bolts or other fasteners need to be inserted through holes in each layer of silicon steel sheets to fix them. Although this method can ensure the structural stability of the core, punching holes will change the magnetic circuit of the silicon steel sheets, resulting in uneven distribution of magnetic flux, increasing eddy current losses and hysteresis losses; punching holes may also cause local temperature rise, affecting the thermal stability and long-term reliability of the transformer; punching holes may also affect the noise level of the transformer. Summary of the Utility Model

[0004] In order to overcome the above-mentioned drawbacks of the prior art, the purpose of the utility model is to provide a reactor core structure without holes in the core.

[0005] The technical solution adopted by the utility model to solve its technical problems is as follows:

[0006] A reactor core structure without holes in the core includes a core member, a pull plate member, an upper clamping member, a lower clamping member, a bundling member, and a first tie rod member;

[0007] The core member includes a core column, an upper yoke member, and a lower yoke member. The core column includes iron discs and air gap partitions. The number of iron discs is more than two, and several iron discs are stacked parallel to each other. The air gap partitions are located between adjacent iron discs. An insulating layer is also provided outside the iron discs and air gap partitions. The insulating layer casts several iron discs and air gap partitions into one body to form the core column;

[0008] The upper yoke member and the lower yoke member are arranged at the upper and lower ends of the core column through the bundling member;

[0009] The pull plate member is arranged on the core member through the bundling member;

[0010] The upper clamping member and the lower clamping member are respectively connected to the upper yoke member and the lower yoke member through the first tie rod member.

[0011] Preferably, the number of the upper clamping members and the lower clamping members is two. A clamping portion is formed between the two upper clamping members or the two lower clamping members. The upper clamping members and the lower clamping members are in sliding fit with the first tension rod member.

[0012] Preferably, the first tension rod member is a screw rod member, and a first locking nut member is provided at the end of the first tension rod member.

[0013] Preferably, a second tension rod member is provided between the upper clamping member and the lower clamping member. The second tension rod member is a screw rod member, and a second locking nut member is provided at the end of the second tension rod member.

[0014] Preferably, a fiberglass tube is sleeved outside the second tension rod member.

[0015] Preferably, a pressing plate device is further included. The pressing plate device includes a pressing plate member, a bolt member, a third locking nut member, and a spring washer. The bolt member is provided on the pressing plate member. One end of the bolt member passes through the upper clamping member. The third locking nut member is provided at one end of the bolt member. The spring washer is provided between the third locking nut member and the upper clamping member. The pressing plate member abuts against the upper yoke member.

[0016] Preferably, the number of the pressing plate devices is more than two. The bolt members are provided at both ends of the pressing plate member and are respectively connected to the two upper clamping members. The pressing plate member is arranged perpendicular to the upper clamping member.

[0017] Preferably, the insulating layer is a fillerless resin cast under a vacuum state.

[0018] Compared with the prior art, the beneficial effects of the present utility model include:

[0019] In the reactor core structure with a core without holes in the present application, the structure of the core member cancels the opening structure, the core column adopts a vacuum integral casting structure, and a clamping and binding structure is used for fixation. While ensuring the product structure, it also avoids the problems that punching will change the magnetic circuit of the silicon steel sheet, resulting in uneven distribution of magnetic flux, increasing eddy current loss and hysteresis loss, and punching may also cause local temperature rise, affecting the thermal stability and long-term reliability of the transformer, and punching may also affect the noise level of the transformer. The core column adopting a vacuum integral casting structure also reduces the oscillation problem between the iron cakes and the air gap partitions, thereby effectively solving the noise problem. Description of the Drawings

[0020] To more clearly illustrate the technical solutions of the embodiments of the present utility model, the following will briefly introduce the attached drawings required for the description of the embodiments. Obviously, the attached drawings in the following description are some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other attached drawings can also be obtained based on these drawings.

[0021] Figure 1 This is the front view of the present utility model.

[0022] Figure 2 For Figure 1 the A-A sectional view of

[0023] Figure 3 For Figure 1 the enlarged schematic view of the mark B of

[0024] Figure 4 This is the top view of the present utility model.

[0025] Figure 5 This is the connection schematic diagram of the iron core part and the pull plate part of the present utility model.

[0026] Figure 6 This is the structural schematic diagram of the iron core part of the present utility model.

[0027] Wherein:

[0028] 1 - iron core part, 101 - iron core column, 1011 - iron disc, 1012 - air gap partition, 1013 - insulating layer, 102 - upper yoke part, 103 - lower yoke part, 2 - pull plate part, 3 - upper clamping part, 4 - lower clamping part, 5 - first pull rod part, 6 - second pull rod part, 7 - first locking nut part, 8 - second locking nut part, 9 - glass cloth tube, 10 - pressing plate part, 11 - bolt part, 12 - third locking nut part, 13 - spring washer, 14 - binding part. Specific embodiments

[0029] In order to more clearly understand the above-mentioned objects, features and advantages of the present utility model, the present utility model will be described in detail below in conjunction with the attached drawings and specific embodiments. It should be noted that, without conflict, the embodiments of the present application and the features in the embodiments can be combined with each other. In the following description, many specific details are set forth in order to fully understand the present utility model. The described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the scope of protection of the present utility model.

[0030] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those of ordinary skill in the technical field to which this utility model belongs. The terms used in the description of this utility model herein are for the purpose of describing specific embodiments only and are not intended to limit this utility model.

[0031] Embodiment:

[0032] As Figures 1-6 shown, in this embodiment, a reactor core structure without holes in the core is provided, which includes a core member 1, a tension plate member 2, an upper clamping member 3, a lower clamping member 4, a binding member 14, and a first tie rod member 5;

[0033] The core member 1 includes a core column 101, an upper yoke member 102, and a lower yoke member 103. The core column 101 includes iron cakes 1011 and air gap partitions 1012. The number of iron cakes 1011 is more than two. A plurality of iron cakes 1011 are stacked in parallel. The air gap partition 1012 is located between adjacent iron cakes 1011. An insulating layer 1013 is further provided outside the iron cakes 1011 and the air gap partitions 1012. The insulating layer 1013 pours a plurality of iron cakes 1011 and the air gap partitions 1012 into one body to form the core column 101;

[0034] The upper yoke member 102 and the lower yoke member 103 are provided at the upper and lower ends of the core column 101 through the binding member 14;

[0035] The tension plate member 2 is provided on the core member 1 through the binding member 14;

[0036] The upper clamping member 3 and the lower clamping member 4 are respectively connected to the upper yoke member 102 and the lower yoke member 103 through the first tie rod member 5.

[0037] In the reactor core structure without holes in the core of this embodiment, the structure of the core member 1 cancels the opening structure, and a clamping and binding structure is adopted for fixation. While ensuring the product structure, it also avoids the problems that punching will change the magnetic circuit of the silicon steel sheet, resulting in uneven distribution of magnetic flux, increasing eddy current loss and hysteresis loss, and that punching may also cause local temperature rise, affecting the thermal stability and long-term reliability of the transformer, and that punching may also affect the noise level of the transformer.

[0038] At the same time, the iron cakes 1011 of the core column 101 and the air gap partitions 1012 are connected into one body through the insulating layer 1013 poured in a vacuum environment. Specifically, the insulating layer 1013 is a fillerless resin poured in a vacuum state, which reduces the oscillation problem between the iron cakes 1011 and the air gap partitions 1012, thereby further effectively solving the noise problem.

[0039] In this embodiment, the number of the upper clamping members 3 and the lower clamping members 4 is two. A clamping portion is formed between the two upper clamping members 3 or the two lower clamping members 4. The upper clamping members 3 and the lower clamping members 4 are slidably engaged with the first tension member 5.

[0040] Specifically, the first tension member 5 is a screw member, and a first locking nut member 7 is provided at the end of the first tension member 5.

[0041] By sliding the upper clamping members 3 and the lower clamping members 4 with the first tension member 5, the space size of the clamping portion can be adjusted to adapt to different size requirements. At the same time, the locking nut member ensures that the clamping portion stably clamps the upper yoke member 102 and the lower yoke member 103.

[0042] In this embodiment, a second tension member 6 is provided between the upper clamping members 3 and the lower clamping members 4. The second tension member 6 is a screw member, and a second locking nut member 8 is provided at the end of the second tension member 6.

[0043] Specifically, a fiberglass tube 9 is sleeved outside the second tension member 6.

[0044] The upper clamping members 3 and the lower clamping members 4 are formed into an integral structure by the second tension member 6 to ensure the stability of the integral structure.

[0045] This embodiment further includes a pressing plate device. The pressing plate device includes a pressing plate member 10, a bolt member 11, a third locking nut member 12 and a spring washer 13. The bolt member 11 is provided on the pressing plate member 10. One end of the bolt member 11 passes through the upper clamping member 3. The third locking nut member 12 is provided at one end of the bolt member 11. The spring washer 13 is provided between the third locking nut member 12 and the upper clamping member 3. The pressing plate member 10 abuts against the upper yoke member 102. A fiberglass tube 9 is sleeved outside the bolt member 11.

[0046] Specifically, the number of the pressing plate devices is more than two. The bolt members 11 are provided at both ends of the pressing plate member 10 and are respectively connected to the two upper clamping members 3. The pressing plate member 10 is perpendicularly arranged with respect to the upper clamping member 3.

[0047] By adjusting the relative position of the third locking nut member 12 on the bolt member 11, the distance between the pressing plate member 10 and the upper clamping member 3 is adjusted, so that the upper clamping member 3 and the upper yoke member 102 are firmly connected.

[0048] In summary, the structure design of this application is reasonable, which is convenient for quick installation and has a stable fixed structure, effectively solving the problems that occur in the punching structure.

[0049] The above are only the preferred embodiments of the present invention, and do not impose any form of limitation on the present invention. Therefore, any modifications, equivalent changes and decorations made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention still fall within the scope of the technical solution of the present invention.

Claims

1. A reactor core structure without holes in the core, characterized in that Comprising: A core member, a pull plate member, an upper clamping member, a lower clamping member, a binding member and a first pull rod member; The core member includes a core column, an upper yoke member and a lower yoke member. The core column includes iron disks and air gap partitions. The number of the iron disks is more than two. A plurality of the iron disks are stacked in parallel. The air gap partitions are disposed between adjacent iron disks. An insulating layer is further provided on the outer sides of the iron disks and the air gap partitions. The insulating layer casts a plurality of the iron disks and the air gap partitions into one body to form the core column; The upper yoke member and the lower yoke member are disposed at the upper and lower ends of the core column through the binding member; The pull plate member is disposed on the core member through the binding member; The upper clamping member and the lower clamping member are respectively connected to the upper yoke member and the lower yoke member through the first pull rod member.

2. The reactor core structure without holes in the core according to claim 1, characterized in that, The number of the upper clamping members and the lower clamping members is two. A clamping portion is formed between the two upper clamping members or the two lower clamping members. The upper clamping member and the lower clamping member are in sliding fit with the first pull rod member.

3. The reactor core structure without holes in the core according to claim 2, characterized in that, The first pull rod member is a screw rod member. A first locking nut member is provided at the end of the first pull rod member.

4. The iron core structure of the reactor with a non-porous iron core according to claim 1, characterized in that, A second pull rod member is provided between the upper clamping member and the lower clamping member. The second pull rod member is a screw rod member. A second locking nut member is provided at the end of the second pull rod member.

5. The reactor core structure without a core hole according to claim 4, characterized in that, A glass cloth tube is sleeved outside the second pull rod member.

6. The iron-core structure of the reactor without a hole in the iron core according to claim 2, characterized in that, Further included is a pressing plate device. The pressing plate device includes a pressing plate member, a bolt member, a third locking nut member and a spring washer. The bolt member is disposed on the pressing plate member. One end of the bolt member passes through the upper clamping member. The third locking nut member is disposed at one end of the bolt member. The spring washer is disposed between the third locking nut member and the upper clamping member. The pressing plate member abuts against the upper yoke member.

7. The iron core structure of the reactor with a non-porous iron core according to claim 6, characterized in that, The number of the pressing plate devices is more than two. The bolt members are disposed at both ends of the pressing plate member and are respectively connected to the two upper clamping members. The pressing plate member is perpendicularly disposed with respect to the upper clamping member.

8. The iron core structure of the reactor with a non-porous iron core according to claim 1, characterized in that, The insulating layer is a fillerless resin cast under a vacuum state.

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