Grounding transformer with anti-vibration function

Abstract

The utility model discloses a grounding transformer with an anti-vibration function, which comprises an iron core and an integral coil arranged on the periphery of the iron core, and the integral coil sequentially comprises a low-voltage coil, an insulating cylinder and a high-voltage coil from inside to outside; the transformer further comprises insulation cushion blocks, the insulation cushion blocks are arranged above and below the whole coil, the two opposite ends of each insulation cushion block are provided with a first limiting part and a second limiting part which extend and protrude in the vertical direction, the first limiting parts abut against the inner side surface of the low-voltage coil, and the second limiting parts abut against the outer side surface of the low-voltage coil. The second limiting part abuts against the outer side surface of the high-voltage coil. According to the utility model, the low-voltage coil and the high-voltage coil are limited through the first limiting part and the second limiting part of the insulating cushion block, and the low-voltage coil, the insulating cylinder and the high-voltage coil are limited in a certain spatial position, so that the situation that the whole coil falls off in a large-current test process is effectively avoided; and the possibility that the grounding transformer is damaged in the test process is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of transformer, especially a grounding transformer with anti vibration function. BACKGROUND

[0002] In the test process of the dry-type transformer, it needs to carry out the electric power impact test. The coil is not fixed by limiting, and in the process of the large current test, the displacement may occur, or the whole coil may fall off due to the vibration and the separation from the cushion block. SUMMARY

[0003] The utility model discloses a grounding transformer with anti vibration function, and aims at solving the problem in prior art.

[0004] In order to achieve the above purpose, the technical scheme of the utility model has:

[0005] The utility model discloses a grounding transformer with anti vibration function, it includes the iron core and sets up the whole coil at the iron core outer periphery, the whole coil includes low voltage coil, insulating cylinder and high voltage coil in proper order from inside to outside, the grounding transformer with anti vibration function still includes insulating cushion block, the insulating cushion block sets up at the top and bottom of the whole coil, the opposite two ends of insulating cushion block have the first limiting portion and the second limiting portion that protrude along the vertical direction, the first limiting portion with the inside surface of low voltage coil is opposite, the second limiting portion with the outside surface of high voltage coil is opposite.

[0006] Compared with prior art, the grounding transformer with anti vibration function disclosed by the utility model, through the first limiting portion and the second limiting portion of the insulating cushion block, the low voltage coil and the high voltage coil are limited, and the low voltage coil, the insulating cylinder and the high voltage coil are limited in a certain space position, effectively avoiding the displacement of the low voltage coil to the direction of the iron core and the displacement of the high voltage coil to the outside direction under the influence of vibration in the process of the large current test, and the whole coil falls off, effectively solving the vibration problem caused by the electric power impact, and reducing the possibility of damage of the grounding transformer in the test process.

[0007] In a preferred embodiment, the upper surface and the lower surface of the low voltage coil are provided with first bosses; the insulating cushion block is provided with first grooves matched with the first bosses.

[0008] In a preferred embodiment, the upper surface and the lower surface of the high voltage coil are provided with second bosses; the insulating cushion block is provided with second grooves matched with the second bosses.

[0009] In a preferred embodiment, the insulating pad comprises a limiting rubber pad and a limiting resin block connected with the limiting rubber pad; the limiting rubber pad is in contact with the surface of the low-voltage coil and the high-voltage coil, the limiting rubber pad has the first limiting part and the second limiting part; the limiting resin block is provided with the first groove and the second groove; the first boss is inserted into the first groove of the limiting rubber pad, and the second boss is inserted into the second groove of the limiting rubber pad.

[0010] In a preferred embodiment, rubber fixing strips are arranged between the low-voltage coil and the insulating cylinder and between the high-voltage coil and the insulating cylinder.

[0011] For better understanding and implementation, the following detailed description is made in conjunction with the drawings. BRIEF DESCRIPTION OF DRAWINGS

[0012] The drawings described herein are used to provide further understanding of the present application, and form a part of the present application. The illustrative embodiments of the present application and their descriptions serve to explain the present application, and do not constitute an improper limitation on the present application. In the drawings:

[0013] Figure 1 is a top view of the grounding transformer with the anti-vibration function;

[0014] Figure 2 is a sectional view along Figure 1 A-A;

[0015] Figure 3 is a sectional exploded view of the grounding transformer with the anti-vibration function.

[0016] Explanation of reference signs:

[0017] 1 low-voltage coil, 11 first boss, 2 insulating cylinder, 3 high-voltage coil, 31 second boss, 4 insulating pad, 41 first limiting part, 42 second limiting part, 43 first groove, 44 second groove, 5 rubber fixing strip. DETAILED DESCRIPTION

[0018] For better illustrating the present application, the following further detailed description is made with reference to the drawings.

[0019] It should be clear that the described embodiments are only some of the embodiments of the present application, but not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0020] The terminology used in the present application is for the purpose of describing particular embodiments only and is not intended to be limiting of the present application. As used in this present application and the appended claims, the singular forms "a," "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise.

[0021] In combination Figures 1 to 3 As shown in the utility model discloses a kind of grounding transformer with anti-vibration function, it includes iron core and the integral coil being arranged at the outer periphery of the iron core, the integral coil sequentially includes low voltage coil 1, insulating cylinder 2 and high voltage coil 3 from inside to outside;The grounding transformer with anti-vibration function further includes insulating pad 4, the insulating pad 4 is arranged above and below the integral coil, the opposite ends of the insulating pad 4 have the first limiting portion 41 and the second limiting portion 42 that protrude along the vertical direction, the first limiting portion 41 is in contact with the inner side surface of the low voltage coil 1, and the second limiting portion 42 is in contact with the outer side surface of the high voltage coil 3.

[0022] Compared with prior art, the grounding transformer with anti-vibration function disclosed by the utility model, by the first limiting portion 41 and the second limiting portion 42 of insulating pad 4, low voltage coil 1 and high voltage coil 3 are limited, low voltage coil 1, insulating cylinder 2 and high voltage coil 3 are limited in a certain space position, effectively avoid the situation that integral coil falls in the process of large current test, low voltage coil 1 deviates to the direction of iron core under the influence of vibration, high voltage coil 3 deviates to the direction of outside under the influence of vibration, effectively solve the problem of vibration caused by electric power impact, reduce the possibility of damage of grounding transformer in the process of test.

[0023] In the embodiment, the upper surface and the lower surface of the low voltage coil 1 are provided with first bosses 11;The insulating pad 4 is provided with first grooves 43 matched with the first bosses 11;The first bosses 11 are inserted into the first grooves 43, which on the one hand facilitates the installation of the insulating pad 4 by the workers, and on the other hand can strengthen the connection between the low voltage coil 1 and the insulating pad 4, further limit the position of the low voltage coil 1, and avoid the falling of the low voltage coil 1.

[0024] Further, the upper surface and the lower surface of the high voltage coil 3 are provided with second bosses 31;The insulating pad 4 is provided with second grooves 44 matched with the second bosses 31;Firstly, it can facilitate the installation of the insulating pad 4 by the workers;Secondly, it can strengthen the connection between the high voltage coil 3 and the insulating pad 4, further limit the position of the high voltage coil 3, and avoid the falling of the high voltage coil 3;In addition, the positions of the first grooves 43 and the second grooves 44 can be combined to limit the position between the low voltage coil 1 and the high voltage coil 3.

[0025] Further, the insulating pad 4 comprises a limiting rubber pad 6 and a limiting resin block 7 connected with the limiting rubber pad 6; the limiting rubber pad 6 is in abutment with surfaces of the low-voltage coil 1 and the high-voltage coil 3, the limiting rubber pad 6 is provided with the first limiting part 41 and the second limiting part 42; the resin block 7 is provided with the first recess 43 and the second recess 44; the first boss 11 is inserted into the first recess 43 of the limiting rubber pad 6, and the second boss 31 is inserted into the second recess 44 of the limiting rubber pad 6. The limiting resin block 7 is fastened and fixed with other components by screw fasteners. In the limiting rubber pad 6, the advantages of rubber, such as strong adaptability to base structures, moderate impact and strong vibration absorption capacity, are utilized to effectively buffer the vibration of the low-voltage coil 1 and the high-voltage coil 3 by abutting the limiting rubber pad 6 with surfaces of the low-voltage coil 1 and the high-voltage coil 3.

[0026] Further, rubber fixing strips 5 are arranged between the low-voltage coil 1 and the insulating cylinder 2 and between the high-voltage coil 3 and the insulating cylinder 2. The advantages of rubber, such as strong adaptability to base structures, moderate impact and strong vibration absorption capacity, are utilized to connect the low-voltage coil 1, the insulating cylinder 2 and the high-voltage coil 3 into an integral whole by the two rubber fixing strips 5, thereby improving the integrity of the grounding transformer and avoiding the vibration problem caused by the electric force impact in the large-current test impact process. Meanwhile, the existence of the rubber fixing strips 5 blocks the circulation path, thereby avoiding the influence of the circulation heat effect on the low-voltage coil 1 and the high-voltage coil 3.

[0027] The utility model is not limited to the above-mentioned embodiment, if the various changes or deformation of the utility model do not deviate from the spirit and scope of the utility model, if these changes and deformation belong to the right claim and equivalent technical scope of the utility model, then the utility model also intends to contain these changes and deformation.

Claims

1. A grounding transformer with anti-vibration function, comprising a core and a whole coil arranged at the outer periphery of the core, the whole coil comprising a low-voltage coil, an insulation cylinder and a high-voltage coil in sequence from inside to outside; characterized in that: the grounding transformer with anti-vibration function further comprises an insulation pad, the insulation pad is arranged above and below the whole coil, opposite ends of the insulation pad are provided with a first limiting part and a second limiting part protruding in the vertical direction, the first limiting part abuts against the inner side surface of the low-voltage coil, and the second limiting part abuts against the outer side surface of the high-voltage coil.

2. The grounding transformer with anti-vibration function according to claim 1, characterized in that: the upper surface and the lower surface of the low-voltage coil are provided with a first boss; the insulation pad is provided with a first groove matched with the first boss.

3. The grounding transformer with anti-vibration function according to claim 2, characterized in that: the upper surface and the lower surface of the high-voltage coil are provided with a second boss; the insulation pad is provided with a second groove matched with the second boss.

4. The grounding transformer with anti-vibration function according to claim 3, characterized in that: the insulation pad comprises a limiting rubber pad and a limiting resin block connected with the limiting rubber pad; the limiting rubber pad abuts against the surface of the low-voltage coil and the high-voltage coil, the limiting rubber pad is provided with the first limiting part and the second limiting part; the limiting resin block is provided with the first groove and the second groove; the first boss is inserted into the first groove of the limiting rubber pad, and the second boss is inserted into the second groove of the limiting rubber pad.

5. The grounding transformer with anti-vibration function according to any one of claims 1-4, characterized in that: rubber fixing strips are arranged between the low-voltage coil and the insulation cylinder and between the high-voltage coil and the insulation cylinder. ​ ​ ​ ​ ​

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