CN209785724U

CN209785724U - General isolation type skeleton filling transformer

Info

Publication number: CN209785724U
Application number: CN201920992774.5U
Authority: CN
Inventors: 秦江勋; 吴小飞; 唐庆凤
Original assignee: Nanjing Ansheng Electronics Co Ltd
Current assignee: Nanjing Ansheng Electronics Co Ltd
Priority date: 2019-06-28
Filing date: 2019-06-28
Publication date: 2019-12-13
Anticipated expiration: 2029-06-28

Abstract

The utility model belongs to the technical field of the transformer is used, specifically disclose general type isolated skeleton embedment transformer, including shell, first bobbin, second bobbin, separate fender, primary, secondary, first secondary output pin, second secondary output pin, the first wire dividing groove of a plurality of, a plurality of second wire dividing groove, transformer core and polyurethane casting glue. The beneficial effects of the utility model reside in that: 1. the transformer has a reasonable design structure, and the design of the added partition, the plurality of first branch slots and the plurality of second branch slots improves the safety and the quality stability of the transformer, avoids the risk that the starting end and the ending end of the primary winding are mutually contacted to generate short circuit, and is more favorable for the automatic production of the transformer; 2. the transformer with the structure can be automatically produced in the whole process, and the production efficiency is 4-5 times that of the traditional transformer; the transformer main body is encapsulated by using the encapsulating adhesive, so that the product performance is more stable, and the transformer main body can normally work in severe environment.

Description

General isolation type skeleton filling transformer

Technical Field

The utility model belongs to the technical field of the transformer is used, concretely relates to general type isolated skeleton embedment transformer.

Background

A Transformer (Transformer) is a device that changes an alternating-current voltage by using the principle of electromagnetic induction, and main components are a primary coil, a secondary coil, and an iron core (magnetic core). The main functions are as follows: voltage conversion, current conversion, impedance conversion, isolation, voltage stabilization (magnetic saturation transformer), and the like, and can be classified into: power transformers and special transformers (furnace transformers, rectification transformers, power frequency test transformers, voltage regulators, mining transformers, audio transformers, intermediate frequency transformers, high frequency transformers, impact transformers, instrument transformers, electronic transformers, reactors, mutual inductors, etc.).

The transformer has the primary purpose of ensuring the safety of people, and the main functions of the transformer are voltage reduction and isolation, wherein the voltage reduction is to reduce high voltage (such as 220V commercial power) to be within a safe voltage, and the isolation is also to isolate the voltage to ground of a live wire. The transformers in the market are also divided into a bare type transformer and a sealed type transformer, a silicon steel sheet of the bare type transformer is exposed outside, a coil only wraps two layers of adhesive tapes, insulation between a primary layer and a secondary layer is difficult to guarantee, an outer shell is exposed, and once electric leakage occurs, electric shock accidents are easy to cause.

Epoxy potting the transformer solves this problem very well, the transformer being encased in a plastic housing and impregnated with epoxy. The housing has no charged part at all, and the epoxy resin can penetrate into the gap of the transformer, the dielectric strength of the resin is much higher than that of air, 3000V can puncture 1mm of air, but tens of thousands of volts are needed to puncture 1mm of epoxy resin.

the electrical strength of the encapsulated transformer is higher than that of a bare transformer by one grade, and encapsulation modes are also classified into normal-pressure encapsulation and vacuum encapsulation. Normal pressure embedment is exactly in pouring into the shell with epoxy under normal atmospheric pressure condition, and the vacuum embedment then needs professional equipment to pour into the shell with epoxy under vacuum environment, and relative normal pressure embedment, the inside air can be taken out in the vacuum embedment, and the finished product does not have the bubble.

The existing encapsulation transformer has no risk that the starting end and the ending end of a primary winding and a secondary winding of a blocking design mutually touch to generate short circuit, the safety and the quality stability of the transformer are poor, and the automatic production cannot be realized.

Therefore, based on the above problem, the utility model provides a general type isolated skeleton embedment transformer.

SUMMERY OF THE UTILITY MODEL

Utility model purpose: the utility model aims at providing a general type isolated skeleton embedment transformer, its project organization is reasonable, and the increase separates fender, the first branch groove of a plurality of, the design of a plurality of second branch groove, has improved the security and the quality stability of transformer, and has avoidd that the primary winding begins and the finish end touches the risk of taking place the short circuit each other, more is favorable to the automated production of transformer.

The technical scheme is as follows: the utility model provides a general isolated framework encapsulating transformer, which comprises a shell, a first winding framework and a second winding framework which are arranged in the shell, a baffle which is arranged between the first winding framework and the second winding framework, a primary winding and a secondary winding which are arranged between the first winding framework, the baffle and the second winding framework at intervals, a first secondary output pin and a second secondary output pin which are respectively arranged on the first winding framework and the second winding framework, and a first winding framework and a second winding framework which are respectively arranged on the first winding framework, the transformer core comprises a plurality of first branch grooves and a plurality of second branch grooves in one side of a second winding framework, a transformer core which is respectively connected with the first winding framework, the second winding framework and a separating block, and polyurethane pouring sealant which seals the first winding framework, the second winding framework, the separating block, a primary winding and a secondary winding in a shell.

According to the technical scheme, the general isolation type framework encapsulated transformer further comprises iron core mounting holes which are respectively arranged in the first winding framework and the second winding framework.

According to the technical scheme, the general isolation type framework encapsulated transformer further comprises silicon steel sheet fixing blocks which are respectively arranged on the outer walls of one ends of the first winding framework and the second winding framework.

According to the technical scheme, the plurality of first branch grooves and the plurality of second branch grooves are respectively provided with two groups.

According to the technical scheme, the thickness of the barrier is 1.1 mm.

Compared with the prior art, the utility model discloses a beneficial effect of general type isolated skeleton embedment transformer lies in: its project organization is reasonable, and the design that separates that increases keeps off, the first wire dividing groove of a plurality of, a plurality of second wire dividing groove has improved the security and the quality stability of transformer, and has avoidd the risk that the primary and secondary winding begins and the terminal touches mutually and takes place the short circuit, more is favorable to the automated production of transformer.

Drawings

Fig. 1 and 2 are schematic front view structural diagrams of the general isolated skeleton encapsulated transformer of the present invention;

Fig. 3 and 4 are schematic diagrams of an assembly structure of the general isolated skeleton encapsulated transformer of the present invention;

Fig. 5 is a schematic view of the bottom vertical structure of the housing of the general-purpose isolated skeleton-encapsulated transformer.

Detailed Description

The invention will be further elucidated with reference to the drawings and the specific embodiments.

The general type isolated bobbin encapsulated transformer shown in fig. 1, fig. 2, fig. 3, fig. 4 and fig. 5 comprises a housing 6, a first bobbin 1 and a second bobbin 8 arranged in the housing 6, a partition 5 arranged between the first bobbin 1 and the second bobbin 8, a primary winding 3 and a secondary winding 2 arranged between the first bobbin 1, the partition 5 and the second bobbin 8 at intervals, a first secondary output pin 10 and a second secondary output pin 12 respectively arranged on the first bobbin 1 and the second bobbin 8, a plurality of first branch slots 14 and a plurality of second branch slots 11 respectively arranged in one side of the first bobbin 1 and the second bobbin 8, a transformer core 4 respectively connected with the first bobbin 1, the second bobbin 8 and the partition 5, and a transformer core 4 connecting the first bobbin 1, the second bobbin 8 and the partition 5, The second bobbin 8, the baffle 5, the primary winding 3 and the secondary winding 2 are sealed in a polyurethane pouring sealant 7 in the shell 6.

According to the technical scheme, the general isolation type skeleton encapsulated transformer further comprises transformer iron core mounting holes 9 which are respectively arranged in the first winding skeleton 1 and the second winding skeleton 8; the general isolation type framework encapsulated transformer also comprises a silicon steel sheet fixing stop 13 which is respectively arranged on the outer walls of one ends of the first winding framework 1 and the second winding framework 8; two groups of the first branch line grooves 14 and the second branch line grooves 11 are respectively arranged; and the thickness of the barrier 5 is 1.1 mm.

This general type isolated skeleton embedment transformer of structure, primary winding 3, secondary winding 2 use to separate and keep off 5 and separate, separate and keep off thickness 1.1 millimeter, primary winding 3, secondary winding 2 separately coiling, the originated and the end of a thread of coiling are through the first minute slot 11 of a plurality of, the winding of a plurality of second minute slot 12 is on leading out pin first secondary output pin 10, second secondary output pin 12, add silicon steel sheet fixed stop 13, convenient automated production.

Compared with the traditional transformer, the universal isolated skeleton encapsulated transformer with the structure has the advantages that the middle of the skeleton is not provided with the partition, the primary and secondary sides are isolated by using the insulating tape, the voltage resistance is better (the partition is increased), and the voltage resistance can reach more than AC 4000V; the production process of the traditional transformer is complex, and a lot of processes are manually completed and difficult to realize automatic production, such as insulation tape isolation between a primary stage and a secondary stage, welding of input and output leads, manual insertion and shaping of silicon steel sheets, installation of a saddle clamp, paint dipping, testing of electrical performance and the like, are time-consuming and labor-consuming, and cannot realize automatic production, the transformer with the structure can be produced by using a full-automatic production line, is automatic in the whole process, and has the production efficiency 4-5 times that of the traditional transformer under the condition of being equipped by the same personnel; the transformer main body is encapsulated in the polyurethane pouring sealant in vacuum, compared with epoxy resin, the transformer main body has smaller stress, and the performance of the product is more stable when the transformer works at high and low temperature in a circulating way, so that the risk of short circuit and open circuit is better avoided.

The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of modifications can be made without departing from the principle of the present invention, and these modifications should also be regarded as the protection scope of the present invention.

Claims

1. General type isolated skeleton embedment transformer, its characterized in that: comprises a shell (6), a first winding frame (1) and a second winding frame (8) which are arranged in the shell (6), a baffle (5) which is arranged between the first winding frame (1) and the second winding frame (8), a primary winding (3) and a secondary winding (2) which are arranged between the first winding frame (1), the baffle (5) and the second winding frame (8) at intervals, a first secondary output pin (10) and a second secondary output pin (12) which are respectively arranged on the first winding frame (1) and the second winding frame (8), a plurality of first branch slots (14) and a plurality of second branch slots (11) which are respectively arranged in one side of the first winding frame (1) and the second winding frame (8), and a transformer core (4) which is respectively connected with the first winding frame (1), the second winding frame (8) and the baffle (5), and polyurethane pouring sealant (7) for sealing the first winding framework (1), the second winding framework (8), the baffle (5), the primary winding (3) and the secondary winding (2) in the shell (6).

2. The universal isolated skeleton-potted transformer of claim 1, wherein: the general isolation type skeleton potting transformer further comprises iron core mounting holes (9) respectively arranged in the first winding skeleton (1) and the second winding skeleton (8).

3. the universal isolated skeleton-potted transformer of claim 2, wherein: the general isolated skeleton encapsulated transformer further comprises a silicon steel sheet fixing baffle (13) respectively arranged on the outer walls of one ends of the first winding skeleton (1) and the second winding skeleton (8).

4. The universal isolated skeleton-potted transformer of claim 1, wherein: the first branch line grooves (14) and the second branch line grooves (11) are respectively provided with two groups.

5. The universal isolated skeleton-potted transformer of claim 1, wherein: the thickness of the baffle (5) is 1.1 mm.