Anti-displacement staggered buckle dry-type transformer core

Abstract

The utility model relates to transformer iron core technical field, concretely is a kind of anti-displacement staggered buckling dry-type transformer iron core, including iron core column body and the iron yoke of adaptation, the iron core column body top end is equipped with the overlap end, and the iron yoke end side is all provided with overlap end, the overlap end of the iron core column body is spaced apart and is provided with multiple recess parts, the overlap end of the iron yoke is provided with the protruding part of the recess part complement, the utility model utilizes the mechanical limiting action of concave-convex structure and limits the relative slip between iron core column body and iron yoke, the purpose of preventing iron core column body and iron yoke from displacement in the process of transportation, installation and operation is realized.

Description

Technical Field

[0001] This utility model relates to the field of transformer core technology, specifically a displacement-resistant interlocking dry-type transformer core. Background Technology

[0002] Dry-type transformers are widely used in urban power grids, building power supply, and rail transit due to their advantages such as environmental friendliness, maintenance-free operation, and good fire resistance. Their core component, the iron core, is typically made of stacked cold-rolled silicon steel sheets. To improve magnetic properties and reduce losses, the iron core generally adopts a stepped overlapping (or staggered) structure. During the transportation and installation of the iron core, especially when subjected to electromagnetic forces, short-circuit electrodynamic forces, or mechanical vibrations during operation, relative slippage (displacement) can easily occur between the silicon steel sheets, increasing no-load losses and no-load current. This inter-sheet displacement disrupts the carefully designed magnetic circuit overlapping structure, increases magnetic reluctance, and leads to a significant increase in eddy current losses and hysteresis losses. Utility Model Content

[0003] The purpose of this invention is to provide a displacement-resistant interlocking dry-type transformer core to solve the problems mentioned in the background art.

[0004] The technical solution of this utility model is: a displacement-resistant interlocking dry-type transformer core, including a core column and a matching yoke. The top of the core column and the side of the yoke are provided with overlapping ends. The overlapping ends of the core column are provided with a plurality of grooves at intervals. The overlapping ends of the yoke are provided with protrusions that are complementary to the grooves.

[0005] The effect achieved by the above components is as follows: through the working cooperation between the iron core column, the yoke, the groove and the protrusion, the overlapping end of the iron core column and the yoke forms a complementary interlocking structure through the groove and the protrusion. When the two overlap, the protrusion is embedded in the groove. The mechanical limiting effect of the concave and convex structure restricts the relative slippage between the iron core column and the yoke. This achieves the purpose of preventing displacement of the iron core column and the yoke during transportation, installation and operation, improving the stability of the overall iron core structure, and reducing the problems of magnetic circuit structure damage and increased no-load loss caused by displacement.

[0006] Preferably, the core column includes a plurality of core column silicon steel sheets and core column locking plates, the core column locking plates being spaced apart between the core column silicon steel sheets, and the groove portion being disposed on the overlapping end of the core column locking plates.

[0007] The effect achieved by the above components is as follows: through the working cooperation between the silicon steel sheets of the iron core column, the locking plates of the iron core column, and the groove, the locking plates of the iron core column are distributed at intervals between the silicon steel sheets of the iron core column, forming a lateral constraint on the silicon steel sheets. At the same time, the groove is set at the overlapping end of the locking plates of the iron core column, so that the locking plates not only undertake the function of fixing the silicon steel sheets, but also achieve the snap-fit ​​positioning through the cooperation between the groove and the protrusion of the yoke. This achieves the purpose of enhancing the overall structural integrity of the iron core column itself and the stability of the connection with the yoke, and improves the displacement resistance of the iron core column.

[0008] Preferably, the yoke includes a plurality of yoke silicon steel sheets and yoke locking plates, the yoke locking plates being spaced apart between the yoke silicon steel sheets, and the protrusions being disposed on the overlapping ends of the yoke locking plates.

[0009] The effect achieved by the above components is as follows: through the working cooperation between the silicon steel sheets of the yoke, the locking plates of the yoke, and the protrusions, the locking plates of the yoke are spaced apart between the silicon steel sheets of the yoke to form a lateral fixation on the silicon steel sheets of the yoke. The protrusions are located at the overlapping ends of the locking plates of the yoke, so that they can be precisely engaged with the grooves of the iron core column. This achieves the purpose of strengthening the structural stability of the yoke itself and the reliability of the connection with the iron core column, and improves the displacement resistance of the yoke.

[0010] Preferably, the overlapping end of the iron core column is provided with a locking block, and the overlapping end of the iron yoke is provided with a locking groove that matches the locking block.

[0011] The effect achieved by the above components is as follows: through the working cooperation between the locking block of the iron core column and the locking groove of the iron yoke, when the iron core column and the iron yoke overlap, the locking block is embedded in the locking groove to form an additional mechanical limiting structure. In conjunction with the fastening effect of the groove and the protrusion, the relative movement of the two is constrained from different positions, thereby achieving the purpose of further enhancing the tightness of the connection between the iron core column and the iron yoke and improving the overall structure's resistance to displacement.

[0012] Preferably, the top of the iron core column is provided with a cone tip, and the bottom of the iron yoke is provided with a corner groove that matches the cone tip.

[0013] The effect achieved by the above components is as follows: through the working cooperation between the cone tip of the iron core column and the corner groove of the yoke, the cone tip at the top of the middle part of the iron core column is inserted into the corner groove at the bottom of the yoke, forming a positioning constraint at the center position of the iron core column and the yoke. The cooperation between the groove and the protrusion, the locking block and the locking groove is assisted, which realizes the purpose of center positioning of the iron core column and the yoke and auxiliary fixation of the overall structure, improves the iron core's resistance to displacement when subjected to electromagnetic force or mechanical vibration, and ensures the stability of the magnetic circuit structure.

[0014] This utility model provides an improved anti-displacement interlocking dry-type transformer core, which has the following improvements and advantages compared with the prior art:

[0015] Firstly, this utility model utilizes the working cooperation between the iron core column, the yoke, the groove, and the protrusion. The overlapping ends of the iron core column and the yoke form a complementary interlocking structure through the groove and the protrusion. When the two overlap, the protrusion is embedded in the groove. The mechanical limiting effect of the concave-convex structure restricts the relative slippage between the iron core column and the yoke, thereby preventing displacement of the iron core column and the yoke during transportation, installation, and operation. This improves the overall stability of the iron core structure and reduces the problems of magnetic circuit structure damage and increased no-load loss caused by displacement.

[0016] Secondly, this utility model utilizes the working cooperation between the locking block of the iron core column and the locking groove of the iron yoke. When the iron core column and the iron yoke overlap, the locking block is embedded in the locking groove, forming an additional mechanical limiting structure. This structure works in conjunction with the interlocking action of the groove and the protrusion to constrain the relative movement of the two from different positions, thereby further enhancing the tightness of the connection between the iron core column and the iron yoke and improving the overall structure's resistance to displacement. Attached Figure Description

[0017] The present invention will be further explained below with reference to the accompanying drawings and embodiments:

[0018] Figure 1 This is a three-dimensional structural schematic diagram of the present invention;

[0019] Figure 2 This is a schematic diagram of the assembled three-dimensional structure of this utility model;

[0020] Figure 3 This is a schematic diagram of the assembly structure of the iron chip in this utility model.

[0021] Explanation of reference numerals in the attached figures:

[0022] 1. Iron core column; 101. Iron core column silicon steel sheet; 102. Iron core column locking plate; 2. Iron yoke; 201. Iron yoke silicon steel sheet; 202. Iron yoke locking plate; 3. Conical tip; 4. Corner groove; 5. Locking block; 6. Locking groove; 7. Protrusion; 8. Groove. Detailed Implementation

[0023] The present invention will now be described in detail, and the technical solutions in the embodiments of the present invention will be clearly and completely described. 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 protection scope of the present invention.

[0024] This utility model provides an improved anti-displacement interlocking dry-type transformer core. The technical solution of this utility model is as follows:

[0025] In embodiments of this utility model, such as Figures 1-3 As shown, a displacement-resistant interlocking dry-type transformer core includes a core column 1 and a matching yoke 2. The core column 1 includes multiple core column silicon steel sheets 101 and core column locking plates 102. The core column locking plates 102 are spaced apart between the core column silicon steel sheets 101. A groove 8 is provided on the overlapping end of the core column locking plates 102. Through the working cooperation between the core column silicon steel sheets 101, the core column locking plates 102, and the groove 8 of the core column 1, the core column locking plates 102 are spaced apart on the core column silicon steel sheets 101. Between the plates 101, a lateral constraint is formed on the silicon steel sheets. Simultaneously, the groove 8 is located at the overlapping end of the locking plate 102 of the iron core column, allowing the locking plate to both fix the silicon steel sheets and achieve a snap-fit ​​positioning through the groove 8 engaging with the protrusion 7 of the yoke 2. This enhances the overall structural integrity of the iron core column 1 and the stability of its connection with the yoke 2. The yoke 2 includes multiple yoke silicon steel sheets 201 and yoke locking plates 202, with the locking plates 202 spaced apart between them. The protrusion 7 is located on the locking plate. At the overlapping ends of the 202, the top of the iron core column 1 and the side of the iron yoke 2 are both provided with overlapping ends. Multiple grooves 8 are spaced apart at the overlapping ends of the iron core column 1. Protrusions 7, complementary to the grooves 8, are provided at the overlapping ends of the iron yoke 2. A locking block 5 is provided at the overlapping ends of the iron core column 1, and a slot 6 is provided at the overlapping ends of the iron yoke 2 to fit the locking block 5. When the iron core column 1 and the iron yoke 2 overlap, the locking block 5 is embedded in the slot 6, forming an additional mechanical limiting structure. This, in conjunction with the interlocking action of the grooves 8 and the protrusions 7, restricts the relative movement of the two from different positions. The movement is constrained. A cone tip 3 is provided at the top of the middle part of the iron core column 1, and a corner groove 4 adapted to the cone tip 3 is opened at the middle of the bottom end of the iron yoke 2. Through the working cooperation between the cone tip 3 of the iron core column 1 and the corner groove 4 of the iron yoke 2, the cone tip 3 at the top of the middle part of the iron core column 1 is inserted into the corner groove 4 at the middle of the bottom end of the iron yoke 2, forming a positioning constraint at the center position of the iron core column 1 and the iron yoke 2. The cooperation of the auxiliary groove part 8 and the protrusion part 7, the locking block 5 and the locking groove 6 realizes the purpose of center positioning of the iron core column 1 and the iron yoke 2 and auxiliary fixation of the overall structure.

[0026] The working principle of the anti-displacement interlocking dry-type transformer core provided by this utility model is as follows: silicon steel sheet cutting and pretreatment, silicon steel sheets are cut according to design requirements to ensure the dimensional accuracy of the core column silicon steel sheet 101, core column locking plate 102, yoke silicon steel sheet 201, and yoke locking plate 202, and the locking plate is surface treated to enhance its bonding force with the silicon steel sheet;

[0027] The iron core column 1 is assembled by embedding the iron core column locking pieces 102 between the silicon steel sheets 101 of the iron core column at the designed intervals to form the basic structure of the iron core column 1. The overlapping end of the iron core column 1 is processed by precisely machining a groove 8 on the overlapping end of the iron core column locking piece 102, installing a clip 5 on the overlapping end of the iron core column 1, and machining a cone tip 3 at the top center.

[0028] Assemble the yoke 2 by embedding the yoke locking pieces 202 between the silicon steel sheets 201 of the yoke at the designed intervals to form the basic structure of the yoke 2. Process the overlapping end of the yoke 2 by precisely machining a protrusion 7 that complements the groove 8 on the overlapping end of the yoke locking pieces 202. Open a slot 6 at the position of the locking block 5 at the overlapping end of the yoke 2, and machine a corner groove 4 that matches the cone tip 3 at the middle of the bottom end.

[0029] The iron core column 1 and the iron yoke 2 are assembled by interlocking and snapping together, so that the groove 8 and the protrusion 7 are precisely snapped together. At the same time, the locking block 5 is embedded in the locking groove 6, and the cone tip 3 is inserted into the corner groove 4. A special tool is used to apply uniform pressure to ensure that all the snapping parts are tightly connected without gaps.

[0030] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A displacement-resistant interlocking dry-type transformer core, comprising a core column (1) and a suitable yoke (2), characterized in that: The top of the iron core column (1) and the side of the iron yoke (2) are both provided with overlapping ends. The overlapping ends of the iron core column (1) are provided with a plurality of grooves (8) at intervals, and the overlapping ends of the iron yoke (2) are provided with protrusions (7) that are complementary to the grooves (8).

2. The anti-displacement interlocking dry-type transformer core according to claim 1, characterized in that: The core column (1) includes a plurality of core column silicon steel sheets (101) and core column locking pieces (102). The core column locking pieces (102) are spaced apart between the core column silicon steel sheets (101), and the groove portion (8) is provided on the overlapping end of the core column locking piece (102).

3. The anti-displacement interlocking dry-type transformer core according to claim 2, characterized in that: The yoke (2) includes a plurality of yoke silicon steel sheets (201) and yoke locking pieces (202). The yoke locking pieces (202) are spaced apart between the yoke silicon steel sheets (201), and the protrusion (7) is disposed on the overlapping end of the yoke locking pieces (202).

4. The anti-displacement interlocking dry-type transformer core according to claim 1, characterized in that: The overlapping end of the iron core column (1) is provided with a locking block (5), and the overlapping end of the iron yoke (2) is provided with a locking groove (6) that is adapted to the locking block (5).

5. The anti-displacement interlocking dry-type transformer core according to claim 1, characterized in that: The iron core column (1) has a cone tip (3) at the top of its middle part, and the iron yoke (2) has a corner groove (4) at the middle of its bottom part that matches the cone tip (3).

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