CN209843474U

CN209843474U - Series-parallel connection multipurpose high-reliability power transformer

Info

Publication number: CN209843474U
Application number: CN201921060334.2U
Authority: CN
Inventors: 钱江
Original assignee: Wuxi Fule Electronics Co Ltd
Current assignee: Wuxi Fule Electronics Co Ltd
Priority date: 2019-07-09
Filing date: 2019-07-09
Publication date: 2019-12-24
Anticipated expiration: 2029-07-09

Abstract

The utility model discloses a series-parallel connection multipurpose high-reliability power transformer, which comprises an iron core, a framework and a housing; the framework comprises a first frame body and a second frame body; the iron core is embedded in the center of the framework in a penetrating manner; the first frame body comprises a first clapboard and a first coil seat; the second frame body comprises a second clapboard and a second coil holder; a primary coil is wound on the first coil base; a secondary coil is wound on the second coil; the housing is a U-shaped bent piece; a limiting plate is arranged on the inner side of the housing along the symmetrical surface; a first positioning groove and a second positioning groove are formed in the two sides of the limiting plate; the first partition plate is embedded in the first positioning groove in a matching manner; the second partition board is embedded in the second positioning groove in a matching manner; the primary and the secondary adopt separate independent structures, thereby not only ensuring the safety, but also facilitating the arrangement of production, shortening the production time and saving the maintenance cost.

Description

Series-parallel connection multipurpose high-reliability power transformer

Technical Field

The utility model relates to a transformer field especially relates to a but series-parallel connection multipurpose high reliability power transformer.

Background

The power transformer is a soft magnetic electromagnetic element, has wide application in the power supply part of electronic products, is applied to the fields of medical equipment, industrial and mining equipment, detection equipment, industrial control and the like, and plays an effective role in power transmission, voltage transformation and insulation isolation. Most of traditional power transformers adopt I-shaped, king-shaped and drawer type frameworks, a primary winding and a secondary winding are arranged, a tapping structural mode is added when necessary, application occasions are often fixed, and the power transformers cannot adapt to the condition that voltage standards among different countries and regions are not uniform, such as 115V, 230V and the like. Safety requirements on products are not considered sufficiently, basic insulation can only be met generally, safety distance among all components is not enough, even if some products are considered, modes such as increasing an insulating tape are adopted, and safety and reliability are still poor. Therefore, it is necessary to provide a power transformer which can perform series-parallel adjustment, has various applications, and has high reliability.

Disclosure of Invention

The purpose of the invention is as follows: in order to overcome the defects existing in the prior art, the utility model provides a can carry out series-parallel connection, the manifold and the high power transformer of reliability of usage.

The technical scheme is as follows: in order to achieve the purpose, the utility model discloses a series-parallel connection multipurpose high-reliability power transformer, which comprises an iron core, a framework and a housing; the framework comprises a first frame body and a second frame body; the iron core is embedded in the center of the framework in a penetrating manner; the first frame body comprises a first clapboard and a first coil seat; the second frame body comprises a second clapboard and a second coil holder; the first partition plate and the second partition plate are arranged in parallel; the first coil seat is arranged on one side, back to the second partition plate, of the first partition plate; a primary coil is wound on the first coil base; the second coil seat is arranged on one side of the second partition plate, which is back to the first partition plate; a secondary coil is wound on the second coil; the housing is a U-shaped bent piece; a limiting plate is arranged on the inner side of the housing along the symmetrical surface; a first positioning groove and a second positioning groove are formed in the two sides of the limiting plate; the first partition plate is embedded in the first positioning groove in a matching manner; the second clapboard is embedded in the second positioning groove in a matching way.

Further, the primary coil and the secondary coil are structurally the same; the primary coil comprises a first winding, a second winding and a conducting unit; the first winding and the second winding are connected in parallel or in series; the conduction unit is correspondingly connected with the first winding and the second winding; the conducting unit comprises a glass fiber sleeve, a heat-shrinkable sleeve and a conducting wire; the peripheries of the first winding and the second winding are wrapped with insulating paper; the part of the lead extending into the insulating paper is wrapped with a glass fiber sleeve; and the part of the lead, which is positioned outside the insulating paper, is wrapped with a heat-shrinkable sleeve.

Further, the iron core comprises an E-shaped sheet and an I-shaped sheet; the iron core is formed by overlapping E-shaped sheets and I-shaped sheets in a staggered manner; the iron core is made of silicon steel sheets.

Furthermore, a first support and a second support are respectively arranged at the upper end and the lower end of the framework; the first support and the second support are connected and arranged between the first support body and the second support body.

Further, a fastening unit is installed between the first bracket and the second bracket; the fastening unit comprises a screw, a first flat cushion, a first T-shaped cushion cover, a second T-shaped cushion cover and a flange nut; the screw penetrates through the first bracket and the second bracket; the first T-shaped cushion cover and the first flat cushion are sequentially overlapped and arranged between the first support and the head of the screw; and the second T-shaped cushion cover and the flange nut are sequentially overlapped and arranged below the second support and are matched with the tail part of the screw.

Has the advantages that: the utility model relates to a series-parallel connection multipurpose high-reliability power transformer, which comprises an iron core, a framework and a housing; the framework comprises a first frame body and a second frame body; the iron core is embedded in the center of the framework in a penetrating manner; the first frame body comprises a first clapboard and a first coil seat; the second frame body comprises a second clapboard and a second coil holder; a primary coil is wound on the first coil base; a secondary coil is wound on the second coil; the housing is a U-shaped bent piece; a limiting plate is arranged on the inner side of the housing along the symmetrical surface; a first positioning groove and a second positioning groove are formed in the two sides of the limiting plate; the first partition plate is embedded in the first positioning groove in a matching manner; the second partition board is embedded in the second positioning groove in a matching manner; the primary and the secondary adopt separate independent structures, thereby not only ensuring the safety, but also facilitating the arrangement of production, shortening the production time and saving the maintenance cost.

Drawings

FIG. 1 is a schematic diagram of the overall structure of a transformer;

FIG. 2 is a transformer assembly drawing;

FIG. 3 is a detailed view of the internal structure of the coil;

FIG. 4 is a schematic view of the housing construction;

fig. 5 is a frame structure diagram.

Detailed Description

The present invention will be further described with reference to the accompanying drawings.

A series-parallel connection multipurpose high-reliability power transformer is shown in figures 1, 2 and 5 and comprises an iron core 1, a framework 2 and a housing 5; the framework adopts flame-retardant materials as raw materials, plays a role in fire prevention and combustion prevention, and can avoid harm even under severe working conditions (such as load short circuit and the like). The framework 2 comprises a first framework body 21 and a second framework body 22, and all parts of the transformer, namely a primary part, an iron core and the like, are fully isolated by adopting a framework structure with separated primary and secondary parts and combining an external housing, so that the requirement of a safety distance is completely met, and the international VDE standard is met; the iron core 1 is embedded in the center of the framework 2 in a penetrating manner; the first frame 21 includes a first partition 201 and a first coil holder 202; the second frame 22 includes a second partition 203 and a second coil holder 204; the first partition board 201 and the second partition board 203 are arranged in parallel; the first coil seat 202 is arranged on one side of the first partition 201, which faces away from the second partition 203; a primary coil 4 is wound on the first coil base 202; the second coil seat 204 is arranged on one side of the second partition plate 203, which faces away from the first partition plate 201; a secondary coil 3 is wound on the second coil 204; meanwhile, the guide grooves 101 are also arranged above the two coil seats, the positions of the guide grooves are reasonably arranged according to the distribution of the wires, and the guide grooves are also used as ventilation holes, so that heat generated by the coils can be effectively transferred out, and meanwhile, a larger surface area can be utilized to play a role in heat dissipation; as shown in fig. 4, the housing 5 is a U-shaped bent piece formed by injection molding of a flame retardant material; a limiting plate 51 is arranged on the inner side of the housing 5 along the symmetrical plane; a first positioning groove 52 and a second positioning groove 53 are formed in two sides of the limiting plate 51; the first partition board 201 is embedded in the first positioning groove 52 in a matching manner; the second partition 203 is embedded in the second positioning groove 53 in a matching manner; by providing two independent U-shaped spaces, the primary and secondary coils can be accommodated simultaneously, and an independent insulating space is formed, completely isolating the primary and secondary coils, and simultaneously isolating the contact with the core. Therefore, the insulation degree is high, the requirement of sufficient safety distance is met, and the safety of the product is fully guaranteed.

The primary coil 4 and the secondary coil 3 are of the same structure and adopt a double-winding structure, and outgoing lines are respectively welded on a primary lead 7 and a secondary lead 6; as shown in fig. 3, the primary coil 4 includes a first winding 41, a second winding 42, and a conductive element 43; the first winding 41 and the second winding are connected in parallel or in series, and the two windings can be respectively suitable for different voltages in series and parallel, for example, the series connection is suitable for 230V, and the parallel connection is suitable for 115V; the conducting unit 43 is correspondingly connected with the first winding 41 and the second winding 42; the conducting unit 43 comprises a glass fiber sleeve 401, a heat shrinkable sleeve 402 and a conducting wire 403; the peripheries of the first winding 41 and the second winding 42 are wrapped with insulating paper 404, the number of the insulating paper is 3, and two groups of insulating paper are wrapped outside the coil to form independent insulating spaces; a glass fiber sleeve 401 is wrapped on the part of the lead 403 extending into the insulating paper 404; the part of the lead 403, which is positioned outside the insulating paper 404, is wrapped with a heat-shrinkable sleeve 402, so that the lead and the edge of the framework are prevented from being damaged due to friction; in addition, the primary coil 4 and the secondary coil 3 are different in wire diameter and coil number of the coils, different in wire specification, and different windings are distinguished by adopting wires with different colors; the assembly process is that the primary coil and the secondary coil are respectively arranged in a housing 5, a rectangular window in the middle of a framework is inserted into an iron core formed by steel sheets in a staggered and overlapped mode one by one, and installation components are arranged at four corners of the steel sheets.

The iron core 1 comprises an E-shaped sheet and an I-shaped sheet; the iron core 1 is formed by overlapping E-shaped sheets and I-shaped sheets in a staggered manner, and proper mounting holes are punched at four corners of a steel sheet; the iron core 1 is made of silicon steel sheets, so that loss is low.

The upper end and the lower end of the framework 2 are respectively provided with a first bracket 11 and a second bracket 12; the first support 11 and the second support 12 are both connected and disposed between the first support 21 and the second support 22, so as to enhance the overall structural strength of the framework 2.

A fastening unit is arranged between the first bracket 11 and the second bracket 12; the fastening unit comprises a screw 8, a first flat cushion 9, a first T-shaped cushion cover 10, a second T-shaped cushion cover 13 and a flange nut 14; the screw 8 penetrates through the first bracket 11 and the second bracket 12; the first T-shaped cushion cover 10 and the first flat cushion 9 are sequentially overlapped and arranged between the first bracket 11 and the head of the screw 8; the second T-shaped cushion cover 13 and the flange nut 14 are sequentially overlapped and arranged below the second bracket 12 and matched with the tail part of the screw 8; the bracket is provided with the oval hole, and the bracket is convenient for a user to install by adopting an installation structure which is symmetrical up and down and left and right; the locking function of the flange nut is utilized, so that the possibility that the nut is loosened after the product is used for a long time is avoided.

The primary and secondary of the transformer adopt separate independent structures, thus not only ensuring the safety, but also facilitating the arrangement of production and shortening the production time; the overall structure of the transformer adopts symmetrical characteristics from winding coils, mounting brackets and the like, the required material specification is small, and the mass production is facilitated; the product has simple structure and simple and clear assembly process, and the production period is further shortened; the same set of transformer components can meet the voltage requirements of different countries or regions, thereby enhancing the market expansion capability and reducing the cost of product development.

The above description is only a preferred embodiment of the present invention, and it should be noted that: for those skilled in the art, without departing from the principle of the present invention, several improvements and modifications can be made, and these improvements and modifications should also be considered as the protection scope of the present invention.

Claims

1. A multipurpose high-reliability power transformer capable of being connected in series and in parallel is characterized in that: comprises an iron core (1), a framework (2) and a housing (5); the framework (2) comprises a first frame body (21) and a second frame body (22); the iron core (1) is embedded in the center of the framework (2) in a penetrating manner; the first frame body (21) comprises a first clapboard (201) and a first coil base (202); the second frame body (22) comprises a second clapboard (203) and a second coil holder (204); the first partition plate (201) and the second partition plate (203) are arranged in parallel; the first coil seat (202) is arranged on one side, back to the second partition plate (203), of the first partition plate (201); a primary coil (4) is wound on the first coil base (202); the second coil holder (204) is arranged on one side, back to the first partition plate (201), of the second partition plate (203); a secondary coil (3) is wound on the second coil holder (204); the housing (5) is a U-shaped bent piece; a limiting plate (51) is arranged on the inner side of the housing (5) along the symmetrical surface; a first positioning groove (52) and a second positioning groove (53) are formed in two sides of the limiting plate (51); the first partition plate (201) is embedded in the first positioning groove (52) in a matching manner; the second clapboard (203) is embedded in the second positioning groove (53) in a matching way.

2. The series-parallel multipurpose high-reliability power transformer of claim 1, characterized in that: the primary coil (4) and the secondary coil (3) are the same in structure; the primary coil (4) comprises a first winding (41), a second winding (42) and a conducting unit (43); the first winding (41) and the second winding are connected in parallel or in series; the conduction unit (43) is correspondingly connected with the first winding (41) and the second winding (42); the conducting unit (43) comprises a glass fiber sleeve (401), a heat-shrinkable sleeve (402) and a conducting wire (403); the peripheries of the first winding (41) and the second winding (42) are wrapped with insulating paper (404); the part of the lead (403) extending into the insulating paper (404) is wrapped with a glass fiber sleeve (401); the part of the lead (403) outside the insulating paper (404) is wrapped with a heat-shrinkable sleeve (402).

3. The series-parallel multipurpose high-reliability power transformer of claim 1, characterized in that: the iron core (1) comprises an E-shaped sheet and an I-shaped sheet; the iron core (1) is formed by overlapping E-shaped sheets and I-shaped sheets in a staggered mode; the iron core (1) is made of silicon steel sheets.

4. The series-parallel multipurpose high-reliability power transformer of claim 1, characterized in that: the upper end and the lower end of the framework (2) are respectively provided with a first bracket (11) and a second bracket (12); the first support (11) and the second support (12) are connected and arranged between the first support body (21) and the second support body (22).

5. The series-parallel multipurpose high-reliability power transformer of claim 4, wherein: a fastening unit is arranged between the first bracket (11) and the second bracket (12); the fastening unit comprises a screw (8), a first flat cushion (9), a first T-shaped cushion cover (10), a second T-shaped cushion cover (13) and a flange nut (14); the screw (8) penetrates through the first bracket (11) and the second bracket (12); the first T-shaped cushion cover (10) and the first flat cushion (9) are sequentially overlapped and arranged between the first support (11) and the head of the screw (8); and the second T-shaped cushion cover (13) and the flange nut (14) are sequentially overlapped and arranged below the second bracket (12) and are matched with the tail part of the screw (8).