Novel stacking structure of high-capacity converter transformer iron core

Abstract

The utility model discloses a novel lamination structure of a high-capacity converter transformer iron core, and particularly relates to the field of large transformer equipment, the high-capacity converter transformer iron core comprises an iron core lamination assembly, the iron core lamination assembly is composed of a core column lamination assembly, a side column lamination assembly and an iron yoke lamination assembly, the side column lamination assemblies are located on the outer side of the core column lamination assembly, the two iron yoke lamination assemblies are arranged corresponding to the top and the bottom of the core column lamination assembly, and the core column lamination assembly, the side column lamination assemblies and the iron yoke lamination assemblies each comprise a single lamination layer. According to the laminated structure, every two single-layer laminated layers are alternated once in the prior art, so that the loss can be relatively reduced by 5%-10%, the operation efficiency is improved, the defects that the conventional high-capacity converter transformer iron core lamination operation is tedious, time-consuming and labor-consuming are overcome, and the production cost is reduced. The device has the advantages of reliable structure, easiness in operation, time saving and labor saving, and is beneficial to rapid development of the transformer technology.

Description

TECHNICAL FIELD

[0001] The utility model relates to large -scale transformer equipment technical field more specifically, the utility model relates to a novel stacking structure of large capacity converter transformer core. BACKGROUND

[0002] With the rapid development of economy, the demand for electricity is also rising sharply, due to the uneven distribution of resources, the state is constantly improving the long distance power transmission capacity, so the demand for large transformer is also increasing in our country, converter transformer is used for high voltage direct current transmission system power transformer, its main function is to convert alternating current into direct current, or convert direct current into alternating current, so as to carry out efficient power transmission between different power systems.

[0003] In order to constitute complete core structure, usually need to stack converter transformer multiple insulation core laminations together, and connect through joint, in prior art, the core joint of converter transformer is two layers one alternation, when stacking core, in order to make the joint of each layer between adjacent layers overlap each other, adopt the way of mutual alternation lamination, get smaller no load current and higher mechanical stability.

[0004] Due to part of the magnetic force line in each layer around the joint air gap into the adjacent layer, the reactive component of no load current and magnetic flux only flow in the same plane compared with some reduction, but due to the eddy current loss caused by the magnetic force line leaving silicon steel sheet, thereby increasing the active component in no load current, therefore, the structure loss of converter transformer core joint is alternated once every two layers. UTILITY MODEL CONTENTS

[0005] The utility model provides a novel stacking structure of large capacity converter transformer core, the problem to be solved is that the structure loss of existing converter transformer core joint is alternated once every two layers.

[0006] In order to achieve the above object, the utility model provides the following technical scheme: a novel stacking structure of large capacity converter transformer core, the large capacity converter transformer core includes core lamination assembly, the core lamination assembly is composed of core column lamination assembly, side column lamination assembly and iron yoke lamination assembly, the side column lamination assembly is located at the outside of core column lamination assembly, and the iron yoke lamination assembly is provided with two groups corresponding to the top and bottom of core column lamination assembly, the core column lamination assembly, the side column lamination assembly and the iron yoke lamination assembly all include single layer lamination layer, and the single layer lamination layer of core column lamination assembly, the single layer lamination layer of side column lamination assembly and the single layer lamination layer of iron yoke lamination assembly are located at the same layer.

[0007] In a preferred embodiment, the single-layer lamination layer of the center column lamination assembly is composed of two center column whole pieces, and the two center column whole pieces are located in the same layer.

[0008] In a preferred embodiment, the single-layer lamination layer of the side column lamination assembly is composed of two side column whole pieces, and the two side column whole pieces are located in the same layer.

[0009] In a preferred embodiment, the single-layer lamination layer of the iron yoke lamination assembly is composed of six iron yoke whole pieces, and the six iron yoke whole pieces are located in the same layer.

[0010] In a preferred embodiment, the center column piece, the side column whole piece and the iron yoke whole piece are all provided with a positioning hole.

[0011] The utility model has the advantages that:

[0012] The utility model discloses a core lamination structure, which comprises a center column lamination assembly, a side column lamination assembly and an iron yoke lamination assembly. BRIEF DESCRIPTION OF DRAWINGS

[0013] Figure 1 It is a core lamination structure schematic view of the utility model.

[0014] Figure 2 It is a center column lamination assembly and iron yoke lamination assembly structure schematic view of the utility model.

[0015] The figure sign is: 1, the core lamination assembly total assembly, 2, the center column lamination assembly, 3, the side column lamination assembly, 4, the iron yoke lamination assembly. DETAILED DESCRIPTION

[0016] The following further describes the present application in detail with reference to the drawings, and it is necessary to point out here that the following detailed description is only used to further illustrate the present application, and cannot be understood as limiting the protection scope of the present application, and the skilled in the art can make some non-essential improvements and adjustments to the present application according to the above application content.

[0017] Refer to the description attached Figure 1 And Figure 2The application discloses a new type of laminated structure of a large-capacity converter transformer core, and relates to the technical field of large-capacity converter transformer cores.

[0018] It should be noted that, the accompanying drawings Figure 1 are shown in the figure, wherein the core column laminated assembly 2 is provided with two groups, the iron yoke laminated assembly 4 is provided with upper and lower iron yokes corresponding to the top and bottom of the core column laminated assembly 2, and the single-layer laminated layers of the two groups of side column laminated assemblies 3 are respectively located on the two sides of the single-layer laminated layers of the core column laminated assembly 2.

[0019] Further, the single-layer laminated layers of the core column laminated assembly 2 are composed of two middle column whole pieces, and the two middle column whole pieces are located in the same layer.

[0020] Further, the single-layer laminated layers of the side column laminated assembly 3 are composed of two side column laminated pieces, and the two side column laminated pieces are located in the same layer.

[0021] Further, the single-layer laminated layers of the iron yoke laminated assembly 4 are composed of six iron yoke laminated pieces, and the six iron yoke laminated pieces are located in the same layer.

[0022] Further, the middle column splices, the side column laminated pieces and the iron yoke laminated pieces are all provided with positioning holes.

[0023] In the embodiment, the specific implementation scene is that: the silicon steel sheet material is sheared according to the design drawing requirements to obtain middle column splices, side column laminations and iron yoke laminations, then the middle column splices, side column laminations and iron yoke laminations are punched by a punching device to obtain positioning holes, so that positioning and limiting are facilitated during stacking, thereby improving the efficiency, finally, single-layer lamination layers are assembled, two middle column laminations are assembled into a single-layer lamination layer of the core column lamination assembly 2, two side column laminations are assembled into a single-layer lamination layer of the side column lamination assembly 3, and six iron yoke laminations are divided into three three iron yoke laminations corresponding to upper and lower iron yokes, when the single-layer lamination layers are stacked, the single-layer lamination layer of the core column lamination assembly 2 is placed first, then the single-layer lamination layer of the side column lamination assembly 3 is placed alternately, finally, the single-layer lamination layer of the iron yoke lamination assembly 4 is placed alternately, after the stacking is completed, the remaining frame structure is assembled, the stacking structure is changed from alternating once every two single-layer lamination layers in the prior art to alternating once every single-layer lamination layer, the loss can be relatively reduced by 5%-10%, the operation efficiency is improved, the problems of complicated, time-consuming and laborious operation of the existing large-capacity converter transformer core stacking are solved, the structure is reliable, easy to operate, time-saving and labor-saving, and the transformer technology can be rapidly developed.

[0024] The above-mentioned embodiments only express several implementation manners of the present application, the description is relatively specific and detailed, but it cannot be understood as the limitation of the patent scope of the present application. It should be pointed out that, for ordinary skilled in the art, without departing from the concept of the present application, several modifications and improvements can be made, which belong to the protection scope of the present application.

Claims

1. A novel lamination structure of a large capacity converter transformer core, characterized in that, The large capacity converter transformer core comprises a core lamination assembly (1), the core lamination assembly (1) is composed of a core column lamination assembly (2), a side column lamination assembly (3) and an iron yoke lamination assembly (4), the side column lamination assembly (3) is located outside the core column lamination assembly (2), the iron yoke lamination assembly (4) is provided with two groups corresponding to the top and bottom of the core column lamination assembly (2), the core column lamination assembly (2), the side column lamination assembly (3) and the iron yoke lamination assembly (4) all comprise a single layer lamination layer, the single layer lamination layer of the core column lamination assembly (2), the single layer lamination layer of the side column lamination assembly (3) and the single layer lamination layer of the iron yoke lamination assembly (4) are located in the same layer.

2. A new type of lamination structure of a large capacity converter transformer core according to claim 1, characterized in that: The single layer lamination layer of the side column lamination assembly (3) is composed of two side column laminations, and the two side column laminations are located in the same layer.

3. A novel lamination structure of a large capacity converter transformer core according to claim 2, characterized in that: The single layer lamination layer of the iron yoke lamination assembly (4) is composed of six iron yoke laminations, and the six iron yoke laminations are located in the same layer.

4. A novel lamination structure of a large capacity converter transformer core according to claim 3, characterized in that: The single layer lamination layer of the core column lamination assembly (2) is composed of two middle column whole pieces, and the two middle column whole pieces are located in the same layer, a single middle column whole piece comprises three middle column splices, and the three middle column splices are located in the same layer, and positioning holes are formed in the middle column splices, the side column laminations and the iron yoke laminations.

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