CN217280361U

CN217280361U - Transformer of magnetic core center pillar sectional type air gap

Info

Publication number: CN217280361U
Application number: CN202220100453.1U
Authority: CN
Inventors: 谌建平
Original assignee: Hangzhou Bozhou Electric Appliance Co ltd
Current assignee: Hangzhou Bozhou Electric Appliance Co ltd
Priority date: 2022-01-14
Filing date: 2022-01-14
Publication date: 2022-08-23
Anticipated expiration: 2032-01-14

Abstract

The utility model provides a transformer with a segmented air gap in a magnetic core center pillar, which comprises at least two magnetic cores arranged oppositely and a center pillar arranged on the magnetic cores, wherein an air gap is arranged between the center pillars on the two magnetic cores arranged oppositely, at least one segmented magnetic sheet is arranged in the air gap, and a primary coil and a secondary coil are sleeved on the periphery of the center pillar; the utility model discloses increase the stability of transformer itself, reduce the influence that the air gap too big leads to.

Description

Transformer of magnetic core center pillar sectional type air gap

Technical Field

The utility model relates to a transformer field especially relates to a transformer of magnetic core center pillar sectional type air gap.

Background

A transformer is generally a stationary electrical device or component, which is a device or component for changing an ac voltage (current) of a certain value into another voltage (current) of the same frequency or different values; usually, a transformer has two or more windings inside, and in order to transmit electric energy, an alternating voltage and current of one system are converted into a voltage and current of another system by electromagnetic induction at the same frequency, and the values of the current and the voltage are usually different.

Current transformer is because the air gap that has between two adjacent magnetic core center pillars, in transformer working process, the size of air gap can direct influence the temperature size at center pillar air gap edge, make the temperature rise at air gap edge higher, because the temperature is higher, lead to near the air gap to produce magnetic saturation easily, make the power not have output and produce and then the inefficacy, simultaneously because the center pillar air gap is not avoided to conventional transformer, make magnetic field produce magnetostriction near the air gap, the high frequency oscillation appears easily in the solenoid, the possibility that further increased the transformer inefficacy.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide an increase the stability of transformer itself, reduce the transformer of magnetic core center pillar sectional type air gap of the too big influence that leads to of air gap.

In order to solve the technical problem, the utility model provides a transformer of magnetic core center pillar sectional type air gap, including the magnetic core of two at least relative settings, set up the center pillar on the magnetic core, have the air gap between the center pillar on two magnetic cores that set up relatively, be provided with at least a segmentation magnetic sheet in the air gap, the periphery of center pillar is located to primary and secondary coil cover.

Furthermore, the sectional type magnetic sheets are distributed in the air gap at intervals, and the sectional type magnetic sheets and the center posts on the two magnetic cores which are oppositely arranged are positioned on the same axis.

Furthermore, an epoxy plate is arranged on one side, away from the center pillar, of the magnetic core, and the surface area of the epoxy plate is larger than that of the part, connected with the epoxy plate, of the magnetic core.

Further, the primary coil comprises an insulated wire, and the insulated wire is wound on the center pillar.

Furthermore, the secondary coil comprises at least one copper sheet, and the copper sheet is sleeved on the periphery of the center pillar.

Furthermore, the secondary coil also comprises a terminal, one side of the copper sheet is connected with the terminal, and the end part of the terminal is arranged on the epoxy board in a penetrating way.

Furthermore, insulating paper is arranged in the air gap, and the insulating paper is distributed between the two adjacent sectional magnetic sheets at intervals and at the connecting position of the sectional magnetic sheets and the center pillar.

Furthermore, insulating paper is arranged between the primary coil and the magnetic core, and insulating paper is arranged between the secondary coil and the magnetic core.

Furthermore, the magnetic core outside is around being equipped with spacing area, and when two magnetic cores that set up relatively each other lock, spacing area is around locating two magnetic core peripheries that set up relatively.

Further, the primary coil and the secondary coil are fixed through a connecting piece.

The beneficial effects of the utility model reside in that, through the mode that sets up the sectional type magnetic sheet in the air gap, make the sectional type magnetic sheet occupy the space of original air gap, carry out the space through the sectional type magnetic sheet to the air gap simultaneously and cut apart, it is a plurality of sectional type air gaps to cut apart the air gap, and reduce the space volume of each sectional type air gap, and then reduce magnetic current intensity, prevent the higher problem of air gap position temperature rise, and because set up in the air gap be the sectional type magnetic sheet, different quantity can be placed to consequently not air gap of equidimension, the sectional type magnetic sheet of specification, all can reduce the space volume of air gap through the sectional type magnetic sheet with the transformer of guaranteeing any specification, increase the application scope of this scheme.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

Fig. 2 is a side view of the present invention.

Fig. 3 is a schematic structural view of the sectional magnetic sheet of the present invention.

Fig. 4 is a schematic structural diagram of the air gap in the present invention.

Reference numerals: 1. a magnetic core; 11. a center pillar; 12. an air gap; 2. an insulated wire; 3. a sectional type magnetic sheet; 4. a copper sheet; 5. a terminal; 6. insulating paper; 7. a limit band; 8. an epoxy board; 9. a connecting member.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art all belong to the protection scope of the present invention.

It will be understood by those skilled in the art that in the present disclosure, the terms "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in a generic and descriptive sense only and not for purposes of limitation, as the terms are used in the description to indicate that the referenced device or element must have the specified orientation, be constructed and operated in the specified orientation, and not for the purposes of limitation.

It is understood that the terms "a" and "an" should be interpreted as meaning that a number of one element or element is one in one embodiment, while a number of other elements is one in another embodiment, and the terms "a" and "an" should not be interpreted as limiting the number.

As shown in fig. 1-4, the present invention provides a transformer with segmented air gap in magnetic core center pillar, which comprises at least two magnetic cores 1 disposed oppositely and center pillars 11 disposed on the magnetic cores 1, wherein an air gap 12 is provided between the center pillars 11 disposed oppositely on the two magnetic cores 1, at least one segmented magnetic sheet 3 is disposed in the air gap 12, and the primary coil and the secondary coil are sleeved on the periphery of the center pillars 11.

Through the mode that sets up the sectional type magnetic sheet in the air gap, make the sectional type magnetic sheet occupy the space of original air gap, carry out the space through the sectional type magnetic sheet simultaneously and cut apart the air gap, it is a plurality of sectional type air gaps to cut apart the air gap, and reduce the space volume of each sectional type air gap, and then reduce magnetic current intensity, prevent the higher problem of air gap position temperature rise, and because what set up in the air gap is the sectional type magnetic sheet, consequently, different quantity can be placed to the air gap of equidimension not, the sectional type magnetic sheet of specification, the space volume of air gap all can be reduced through the sectional type magnetic sheet in order to guarantee the transformer of any specification, the application scope of this scheme is increased.

Specifically, the magnetic core comprises a chassis, side walls arranged on two sides of the chassis and a center pillar positioned between the side walls on the two sides, when the two oppositely arranged magnetic cores are mutually buckled, an air gap is formed between the center pillars on the two magnetic cores, and the sectional type magnetic sheet is placed in the air gap, so that the air gap is divided into a plurality of sectional type air gaps, and the space volume of a single sectional type air gap is further reduced; wherein the lateral wall length of chassis both sides can be greater than well center pillar length also can be less than well center pillar length, and the length between the lateral wall of both sides simultaneously also can be different, and specific length demand adjusts according to the environment of in-service use.

In an embodiment of the present disclosure, the primary coil is sleeved on the outer periphery of the center pillar of one of the two magnetic cores, and the secondary coil is sleeved on the outer periphery of the center pillar of the other of the two magnetic cores, so that the sectional magnetic sheet reduces the spatial volume of the air gap, and the primary coil and the secondary coil are also far away from the air gap, thereby further reducing the influence caused by the air gap.

Preferably, the sectional magnetic sheets 3 are spaced in the air gap 12, and the sectional magnetic sheets 3 and the center pillars 11 of the two magnetic cores 1 are located on the same axis.

Specifically, because sectional type magnetic sheet and center pillar are located the same axis for the sectional type magnetic sheet only need aim at the axis position of center pillar in the installation can be accurate place, avoid the sectional type magnetic sheet to place the air gap that crooked leads to and cut apart unsafe problem, the interval distribution through the sectional type magnetic sheet sets up simultaneously, make the air gap cut apart the sectional type air gap that is a plurality of intervals and sets up, increase the separation nature between the adjacent bipartition formula air gap, improve the effect of cutting apart to the air gap.

In an embodiment of this scheme, the surface area of sectional type magnetic sheet is the same with the surface area of center pillar for when sectional type magnetic sheet and center pillar lie in same axis, the edge of sectional type magnetic sheet can not appear protruding or sunken shape for the center pillar edge, avoids primary and secondary to receive the hindrance of protruding or sunken shape.

Preferably, the epoxy plate 8 is disposed on the side of the magnetic core 1 away from the center pillar 11, and the surface area of the epoxy plate 8 is larger than the surface area of the magnetic core 1 connected to the epoxy plate 8.

Specifically, the epoxy board is used for insulating effect for one side that the center pillar was kept away from to the magnetic core is insulating setting, avoids the problem of electric energy loss, cooperates the epoxy board surface area simultaneously and is greater than the mode that sets up of magnetic core side surface area, makes the outside that the magnetic core can be covered completely to the insulating scope of epoxy board, increases insulating effect.

Preferably, the primary coil includes an insulated wire 2, and the insulated wire 2 is wound around the center leg 11.

Specifically, the insulated wire in the present embodiment is mainly used as a triple-layer insulated wire, and preferably, a 0.1 × 100P type triple-layer insulated wire, that is, a stranded wire obtained by mutually twisting 100 insulated wires having a diameter of 0.1mm is used.

Preferably, the secondary coil comprises at least one copper sheet 4, and the copper sheet 4 is sleeved on the periphery of the center pillar 11.

Specifically, the copper sheet is the loop configuration setting, puts at the central point of copper sheet and has seted up the through-hole, when locating the copper sheet cover in the center pillar periphery, the through-hole cover is established in the center pillar outside to it is spacing to carry out the copper sheet to make the center pillar pass the through-hole position.

Preferably, the secondary coil further comprises a terminal 5, one side of the copper sheet 4 is connected with the terminal 5, and the end of the terminal 5 is arranged on the epoxy board 8 in a penetrating way.

The copper sheet is connected with the terminal through the copper sheet for the copper sheet carries out spacing fixed through the terminal, avoids the copper sheet to rock from top to bottom for the center pillar, simultaneously because the tip of terminal wears to locate on the epoxy board, makes the copper sheet be connected with external electrical part through the terminal, increases stability and convenience that the copper sheet is connected.

It is worth mentioning that, the insulating wire both ends in this scheme are the end of drawing forth, and the end of drawing forth winds to establish and is connected on the terminal, and draws forth the end and the terminal connection position preferably the terminal wear locate the position on the epoxy board, both increased the in service behavior temperature of insulating wire, also avoided the insulating wire to draw forth the problem that end and copper sheet interfere each other.

Preferably, the air gap 12 is internally provided with an insulating paper 6, and the insulating paper 6 is distributed between two adjacent sectional magnetic pieces 3 at intervals and at the connecting position of the sectional magnetic pieces 3 and the center pillar 11.

Specifically, the position between adjacent bipartition segmentation magnetic sheet, between segmentation magnetic sheet and the center pillar is separated through the insulated wire, guarantees the insulating properties of partition department, and in the preferred embodiment of this scheme, the insulated paper adopts the nomex insulated paper.

Preferably, an insulating paper 6 is provided between the primary coil and the magnetic core 1, and an insulating paper 6 is provided between the secondary coil and the magnetic core 1.

Specifically, the primary coil and the secondary coil are limited in the magnetic core through the insulating paper, the coil and the magnetic core are separated from each other, the loss of electric energy on the coil to the position outside the magnetic core is avoided, and the transformer is guaranteed to have enough insulating performance.

Preferably, the outer side of the magnetic core 1 is wound with a position-limiting belt 7, and when the two oppositely arranged magnetic cores 1 are mutually buckled, the position-limiting belt 7 is wound on the peripheries of the two oppositely arranged magnetic cores 1.

Specifically, two magnetic cores that set up relatively buckle each other to wrap up primary coil and secondary coil inside the back with the magnetic core, carry on spacingly to two magnetic cores that set up relatively through spacing area, guarantee can not remove at will between two magnetic cores.

In the embodiment of the scheme, the limiting belt is made of an adhesive tape material.

Preferably, the primary coil and the secondary coil are fixed by a connecting piece 9.

Specifically, the connecting piece in this scheme adopts the glue material, connects between with primary and secondary coil through glue, and it is fixed all to connect through glue between center pillar and the sectional type magnetic sheet, between two continuous sectional type magnetic sheets, between two magnetic cores that set up relatively, increases the holistic stability of transformer simultaneously.

The present invention is not limited to the above-mentioned preferred embodiments, and any other products in various forms can be obtained by the teaching of the present invention, but any changes in the shape or structure thereof, which have the same or similar technical solutions as the present invention, fall within the protection scope of the present invention.

Claims

1. A transformer of magnetic core center pillar sectional type air gap which characterized in that: the magnetic core comprises at least two oppositely arranged magnetic cores (1) and center posts (11) arranged on the magnetic cores (1), wherein an air gap (12) is arranged between the center posts (11) on the two oppositely arranged magnetic cores (1), at least one sectional type magnetic sheet (3) is arranged in the air gap (12), and a primary coil and a secondary coil are sleeved on the periphery of the center posts (11).

2. The core-in-pillar segmented air-gap transformer of claim 1, wherein: the sectional magnetic sheets (3) are distributed in the air gap (12) at intervals, and the sectional magnetic sheets (3) and the center posts (11) on the two magnetic cores (1) which are oppositely arranged are positioned on the same axis.

3. The core-in-core segmented air-gap transformer of claim 1, wherein: an epoxy plate (8) is arranged on one side, away from the center post (11), of the magnetic core (1), and the surface area of the epoxy plate (8) is larger than that of the part, connected with the epoxy plate (8), of the magnetic core (1).

4. The core-in-core segmented air-gap transformer of claim 1, wherein: the primary coil comprises an insulating wire (2), and the insulating wire (2) is wound on the center pillar (11).

5. The core-in-pillar segmented air-gap transformer of claim 1, wherein: the secondary coil comprises at least one copper sheet (4), and the copper sheet (4) is sleeved on the periphery of the center pillar (11).

6. The core-in-core segmented air-gap transformer of claim 5, wherein: the secondary coil further comprises a terminal (5), one side of the copper sheet (4) is connected with the terminal (5), and the end part of the terminal (5) penetrates through the epoxy board (8).

7. The core-in-core segmented air-gap transformer of claim 1, wherein: the air gap (12) is internally provided with insulating paper (6), the insulating paper (6) is distributed between two adjacent sectional type magnetic sheets (3) at intervals, and the sectional type magnetic sheets (3) are connected with the middle column (11).

8. The core-in-core segmented air-gap transformer of claim 1, wherein: and insulating paper (6) is arranged between the primary coil and the magnetic core (1), and insulating paper (6) is arranged between the secondary coil and the magnetic core (1).

9. The core-in-pillar segmented air-gap transformer of claim 1, wherein: the outer side of the magnetic core (1) is wound with a limiting belt (7), and when the two oppositely arranged magnetic cores (1) are mutually buckled, the limiting belt (7) is wound on the peripheries of the two oppositely arranged magnetic cores (1).

10. The core-in-core segmented air-gap transformer of claim 1, wherein: the primary coil and the secondary coil are fixed through a connecting piece (9).