CN213124112U

CN213124112U - Small transformer

Info

Publication number: CN213124112U
Application number: CN202022225781.8U
Authority: CN
Inventors: 李永强
Original assignee: Guangzhou Boyun Electromechanical Equipment Co ltd
Current assignee: Guangdong Baiyun Transformer Manufacturing Co ltd
Priority date: 2020-10-09
Filing date: 2020-10-09
Publication date: 2021-05-04
Anticipated expiration: 2030-10-09

Abstract

The utility model discloses a miniature transformer, concretely relates to transformer technical field, including roof and bottom plate, be equipped with transformer coil assembly between roof and the bottom plate, transformer coil assembly includes the skeleton that is connected with roof and bottom plate, and the periphery of skeleton is around being equipped with first high-voltage insulation sticky tape, the outside cover of skeleton is equipped with the coil, and the coil includes around establishing at the outside a plurality of windings of skeleton, and the outside that the outside of skeleton is located every winding is around being equipped with second high-voltage insulation sticky tape, the skeleton is close to the fixed ordinary insulating sticky tape that is equipped with of outermost second high-voltage insulation sticky tape department, the inside of skeleton is equipped with the magnetic core. The small transformer adopts a method of winding a high-voltage insulating tape to enhance the insulating property of the end part of the small transformer, simultaneously improves the mechanical strength of a coil, greatly improves the manufacturing quality of end part insulation, and reduces the internal insulation fault of the transformer.

Description

Small transformer

Technical Field

The utility model relates to a transformer technical field, concretely relates to miniature transformer.

Background

The transformer is a device for changing alternating voltage by utilizing the principle of electromagnetic induction, a transformer coil is an important component of the transformer or is vividly called as the heart of the transformer and is also a part with more faults in the operation of the transformer, the vertical end insulation size of the small transformer is relatively small, the processing is difficult, and the traditional small transformer does not pay enough attention to end insulation in the processing and assembling processes, so that the faults of turn-to-turn short circuit, overheating, local earth discharge and the like of the transformer often occur;

the existing technology for manufacturing small transformers has the defects that in order to reduce cost, realize mass production and save labor, the insulation of the end parts of the transformers is not paid much attention, so that the faults of the transformers in the using process are almost caused by insulation defects or overheating short circuits at the outlets of the transformers and the like.

SUMMERY OF THE UTILITY MODEL

Therefore, the utility model provides a miniature transformer aims at solving traditional miniature transformer and in processing, the assembly process, does not have sufficient attention to the end insulation, so often take place transformer turn-to-turn short circuit, overheated and the problem of trouble such as local discharge to ground.

In order to achieve the above object, the present invention provides the following technical solutions:

the utility model provides a small-size transformer, includes a plurality of reactor coils, includes roof and bottom plate, be equipped with transformer coil assembly between roof and the bottom plate, transformer coil assembly includes the skeleton that is connected with roof and bottom plate, and the periphery of skeleton is around being equipped with first high-voltage insulation sticky tape, the outside cover of skeleton is equipped with the coil, and the coil includes around establishing at the outside a plurality of windings of skeleton, and the outside that the outside of skeleton is located every winding is around being equipped with second high-voltage insulation sticky tape, the skeleton is close to the fixed ordinary insulation sticky tape that is equipped with of outermost second high-voltage insulation sticky tape department, the inside of skeleton is equipped with the magnetic core.

Furthermore, a plurality of tooth sockets are arranged at the top end of the framework along the two transverse sides, and the winding is clamped with the tooth sockets.

Furthermore, the winding is composed of a primary winding and a secondary winding, and one end of the winding is connected with a pin.

Furthermore, the inner sides of the top plate and the bottom plate are embedded with shells.

Furthermore, the shell has base shells welded along both sides in the transverse direction, and the upper surface of the top plate is fixedly provided with a spacing block corresponding to the two base shells.

Furthermore, a group of through holes are formed in the outer surface of the isolation sheet, and fastening bolts fixedly connected with the base shell are inserted into the through holes.

Furthermore, the quantity of magnetic core sets to two, and two magnetic cores are the structure setting of mutual joint.

The utility model has the advantages of as follows:

1. the utility model discloses twine first high-voltage insulating tape around transformer coil's skeleton earlier, after that around transformer's primary winding, primary winding has been wound at every turn, all will twine second high-voltage insulating tape at transformer coil's both ends, then, continue to twine transformer's secondary, secondary winding has been wound, twine ordinary insulating tape at transformer coil's both ends again, accomplish transformer coil assembly's equipment promptly, self tip insulating properties is strengthened to this small-size transformer adoption method of twining high-voltage insulating tape, the mechanical strength of coil has still been improved simultaneously, tip insulation's manufacturing quality has been improved greatly, and transformer internal insulation trouble has been reduced.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below. It should be apparent that the drawings in the following description are merely exemplary, and that other embodiments can be derived from the drawings provided by those of ordinary skill in the art without inventive effort.

The structure, ratio, size and the like shown in the present specification are only used for matching with the content disclosed in the specification, so as to be known and read by people familiar with the technology, and are not used for limiting the limit conditions which can be implemented by the present invention, so that the present invention has no technical essential significance, and any structure modification, ratio relationship change or size adjustment should still fall within the scope which can be covered by the technical content disclosed by the present invention without affecting the efficacy and the achievable purpose of the present invention.

Fig. 1 is a schematic view of the overall structure provided by the present invention;

fig. 2 is a front view of a transformer coil assembly provided by the present invention;

fig. 3 is a top view of a transformer coil assembly provided by the present invention;

fig. 4 is a perspective view of the magnetic core provided by the present invention;

fig. 5 is a perspective view of the spacer provided by the present invention;

in the figure: 1. a framework; 2. a top plate; 3. a base plate; 4. a first high voltage insulating tape; 5. a winding; 6. a second high voltage insulating tape; 7. a common insulating tape; 8. a base shell; 9. a magnetic core; 10. a housing; 11. a separator; 12. a pin; 13. a tooth socket; 14. a through hole; 15. and (5) fastening the screw.

Detailed Description

The present invention is described in terms of specific embodiments, and other advantages and benefits of the present invention will become apparent to those skilled in the art from the following disclosure. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to the attached drawings 1-5 in the specification, the miniature transformer of the embodiment comprises a top plate 2 and a bottom plate 3, a transformer coil assembly is arranged between the top plate 2 and the bottom plate 3, the transformer coil assembly comprises a framework 1 connected with the top plate 2 and the bottom plate 3, a first high-voltage insulating tape 4 is wound on the periphery of the framework 1, a coil is sleeved on the outer portion of the framework 1 and comprises a plurality of windings 5 wound on the outer portion of the framework 1, a second high-voltage insulating tape 6 is wound on the outer side, located on the outer side of each winding 5, of the outer portion of the framework 1, a common insulating tape 7 is fixedly arranged at the position, close to the outermost second high-voltage insulating tape 6, of the framework 1, and a magnetic core 9 is arranged inside the framework 1.

Furthermore, a plurality of tooth spaces 13 have been seted up along horizontal both sides in the top of skeleton 1, winding 5 and tooth space 13 looks joint for the fixed winding structure.

Further, the winding 5 is composed of a primary winding and a secondary winding, and one end of the winding 5 is connected with a pin 12.

Furthermore, the inner side of the top plate 2 and the inner side of the bottom plate 3 are both embedded with a shell 10 for external protection.

Further, the shell 10 is welded with the base shells 8 along the two transverse sides, and the upper surface of the top plate 2 is fixedly provided with the spacing pieces 11 corresponding to the two base shells 8.

Furthermore, a group of through holes 14 are formed in the outer surface of the spacer 11, and fastening bolts 15 fixedly connected with the base shell 8 are inserted into the through holes 14.

Further, the number of the magnetic cores 9 is set to two, and the two magnetic cores 9 are in mutual clamping connection.

The implementation scenario is specifically as follows: in the use process of the small transformer, metal scraps, dirt and the like can be left at the end part and the surface of the coil sometimes, which has great influence on the discharge along the surface of the coil. The failure of the transformer is mainly caused by the insulation strength, the mechanical strength, overheating and the like. Therefore, the enhancement of the insulation of the end part and the side edge of the coil of the small transformer is a fundamental measure for improving the quality of the small transformer product. In the manufacturing process of the transformer coil, a first high-voltage insulating tape 4 is firstly wound around a framework 2 of the transformer coil, then winding the primary winding 5 of the transformer, winding a second high-voltage insulating tape 6 at two ends of the transformer coil each time the primary winding 5 is wound, then, the secondary winding of the transformer is continuously wound, the secondary winding is wound, the common insulating adhesive tape 7 is wound at the two ends of the transformer coil, that is, the assembly of the transformer coil assembly is completed, and then, the magnetic core 9 is installed inside the bobbin 1 while the housings 10 are respectively fitted to the inner sides of the top plate 2 and the bottom plate 3, then, after the base shell 8 is mounted close to the two sides of the shell 10 corresponding to the position of the coil, the fastening bolts 15 are fastened corresponding to the positions of the through holes 14 on the spacing pieces 11, the whole assembly process of the small transformer can be completed by ensuring the fixation of the isolating sheet 11 and the base shell 8;

the small transformer adopts a method of winding a high-voltage insulating tape to enhance the insulating property of the end part of the small transformer, simultaneously improves the mechanical strength of a coil, greatly improves the manufacturing quality of end part insulation, and reduces the internal insulation fault of the transformer.

The working principle is as follows: firstly, winding a first high-voltage insulating tape 4 around a framework 2 of a transformer coil, then winding a primary winding 5 of the transformer, winding a second high-voltage insulating tape 6 at two ends of the transformer coil after winding the primary winding 5 each time, then continuing to wind a secondary winding of the transformer, winding a common insulating tape 7 at two ends of the transformer coil, namely completing the assembly of a transformer coil assembly, then, installing a magnetic core 9 into the framework 1, simultaneously, respectively embedding a shell 10 on the inner sides of a top plate 2 and a bottom plate 3 correspondingly, then, installing a base shell 8 on the positions of the corresponding coils close to two sides of the shell 10, and then fastening a fastening bolt 15 at the position corresponding to a through hole 14 on a spacer 11, so that the spacer 11 and the base shell 8 are ensured to be fixed, and the whole assembly process of the miniature transformer can be completed;

Although the invention has been described in detail with respect to the general description and the specific embodiments, it will be apparent to those skilled in the art that modifications and improvements can be made based on the invention. Therefore, such modifications and improvements are intended to be within the scope of the invention as claimed.

Claims

1. A miniature transformer comprising a top plate (2) and a bottom plate (3), characterized in that: be equipped with transformer coil assembly between roof (2) and bottom plate (3), transformer coil assembly includes skeleton (1) that is connected with roof (2) and bottom plate (3), and the periphery of skeleton (1) is around being equipped with first high-voltage insulating tape (4), the outside cover of skeleton (1) is equipped with the coil, and the coil includes around establishing a plurality of windings (5) in skeleton (1) outside, and the outside that the outside of skeleton (1) is located every winding (5) is around being equipped with second high-voltage insulating tape (6), skeleton (1) is close to outermost second high-voltage insulating tape (6) and locates to fix and is equipped with ordinary insulating tape (7), the inside of skeleton (1) is equipped with magnetic core (9).

2. A miniature transformer according to claim 1, wherein: a plurality of tooth sockets (13) have been seted up along horizontal both sides in the top of skeleton (1), winding (5) and tooth socket (13) looks joint.

3. A miniature transformer according to claim 1, wherein: the winding (5) consists of a primary winding and a secondary winding, and one end of the winding (5) is connected with a pin (12).

4. A miniature transformer according to claim 1, wherein: and the inner sides of the top plate (2) and the bottom plate (3) are embedded with a shell (10).

5. A miniature transformer according to claim 4, wherein: the shell (10) is welded with the base shells (8) along the two transverse sides, and the upper surface of the top plate (2) is fixedly provided with the spacing pieces (11) corresponding to the two base shells (8).

6. A miniature transformer according to claim 5, wherein: a group of through holes (14) are formed in the outer surface of the isolation sheet (11), and fastening bolts (15) fixedly connected with the base shell (8) are inserted into the through holes (14).

7. A miniature transformer according to claim 1, wherein: the number of magnetic cores (9) is set to two, and two magnetic cores (9) are the structure setting of mutual joint.