CN204792346U - Magnetic core of transformer and applied this magnetic core of transformer's transformer - Google Patents

Abstract

The utility model provides a magnetic core of transformer and applied this magnetic core of transformer's transformer, relates to transformer technical field, and its magnetic core is E type magnetic core, the tongue piece of E type magnetic core in the middle of being located, the tongue piece width of E type magnetic core with the proportion of the total length of E type magnetic core is 23: 82, magnetic core and transformer skeleton more than its transformer, the transformer skeleton is established including being used for inserting the window of the tongue piece of E type magnetic core with be located two wire casings of window both sides, window and one the proportion of wire casing width is 8: 5, through the tongue piece width that reduces E type magnetic core for the iron loss reduces, can reduce the no -load loss of transformer, and because the tongue piece width of E type magnetic core reduces, can make the window that is used for inserting the tongue piece of the E type of establishing magnetic core of transformer skeleton also can reduce, under the condition that external dimension is unchangeable of transformer skeleton, can increase the width of the wire casing of transformer skeleton, just so can to wind the enameled wire more, and the number of turns of enameled wire is many, and the no -load loss of transformer is just little.

Description

A kind of magnetic core of transformer and apply the transformer of this magnetic core of transformer

Technical field

The utility model relates to transformer technology field, particularly relates to a kind of magnetic core of transformer and applies the transformer of this magnetic core of transformer.

Background technology

Transformer (Transformer) utilizes the principle of electromagnetic induction to change the device of alternating voltage, and main member is primary coil, secondary coil, skeleton and magnetic core (magnetic core).

Transformer framework is the agent structure part of transformer, for the copper cash in transformer provides the space of winding, and the magnetic core etc. in stationary transformer, the magnetic core of different transformer framework collocation different sizes.

The transformer framework of prior art, has a variety of model, the structure of the transformer framework that different models is corresponding different, and such as the skeleton of EE type has: EE10, EE13, EE16, EE19, EE20, EE22, EE25, EE28, the skeleton of EE30 and EE33 etc., EC type has: EC22, EC25, EC28/28, the skeleton of EC28/34 and EC35 etc., UF type has: UF9.8, the skeleton of UF10.5 and UF16, EFD type has: EFD15, EFD20, EFD25 and EFD2025 plastic skeleton etc., the skeleton of EI type has: EI41 and EI28 etc., the size of the transformer framework of each model has certain standard, general production is produced house and is produced according to the size of standard, such as model is the transformer framework of EI41, its window is 13.5mm, the wire casing height of skeleton is 6.75mm, namely the ratio of window and wire casing width is 2:1, so mating the tongue of the E-type magnetic core used with it wide is 13mm, and the total length of E-type magnetic core is 41mm, and namely the ratio of the total length of the wide and E-type magnetic core of the tongue of E-type magnetic core is 13:41, the size of the magnetic core of transformer of this standard design, finds that no-load loss is larger in the process used.

The no-load loss mainly core loss of transformer, it is made up of magnetic hysteresis loss and eddy current loss.Magnetic hysteresis loss is directly proportional to permeability magnetic material, and is directly proportional to the quadratic power of magnetic flux density; And the thickness of the quadratic power of eddy current loss and magnetic flux density, the quadratic power of permeability magnetic material thickness, the quadratic power of frequency and permeability magnetic material is directly proportional, therefore, reduce no-load loss and will reduce magnetic flux density, its result increases causing the weight of permeability magnetic material.The another kind of method reducing no-load loss adopts high magnetic conduction, low-loss permeability magnetic material, or adopt the permeability magnetic material that thickness is thinner, but its result all causes the increase of transformer cost, and excessively thin silicon steel sheet makes the reduction of the flatness of magnetic core cause the mechanical strength of magnetic core to reduce.

Utility model content

The purpose of this utility model is to avoid weak point of the prior art and provides a kind of magnetic core of transformer and apply the transformer of this magnetic core of transformer, and this magnetic core of transformer can reduce the no-load loss of transformer when not increasing cost.

The purpose of this utility model is achieved through the following technical solutions:

There is provided a kind of magnetic core of transformer, described magnetic core is E-type magnetic core, and described E-type magnetic core comprises the tongue piece being positioned at centre, it is characterized in that: the ratio of the tongue piece width of described E-type magnetic core and the total length of described E-type magnetic core is 23:82.

Described tongue piece width is 11.5mm.

The total length of described E-type magnetic core is 41mm.

Described E-type magnetic core is silicon steel sheet magnetic core.

A kind of transformer is provided, comprise above magnetic core of transformer and transformer framework, it is characterized in that: described transformer framework comprises the window of the tongue piece for plugging described E-type magnetic core and is positioned at two wire casings of described window both sides, and the ratio of described window and a described wire casing width is 8:5.

Described window and two described wire casing width summations are 27mm.

The width of described window is 12mm.

A described wire casing width is 7.5mm.

The beneficial effects of the utility model: E-type magnetic core of the present utility model, by reducing the tongue piece width of E-type magnetic core, iron loss is reduced, the no-load loss of transformer can be reduced, the weight of E-type magnetic core itself can also be reduced, and due to the tongue piece reduced width of E-type magnetic core, the window of the tongue piece for plugging E-type magnetic core of transformer framework can be made also can to reduce, when the apparent size of transformer framework is constant, the width of the wire casing of transformer framework can be increased, so just can how around enamelled wire, the number of turn of enamelled wire is many, the no-load loss of transformer is just little.

Accompanying drawing explanation

Accompanying drawing is utilized to be described further utility model, but the embodiment in accompanying drawing does not form any restriction of the present utility model, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to the following drawings.

Fig. 1 is the overall structure schematic diagram of a kind of magnetic core of transformer of embodiment 1 of the present utility model.

Fig. 2 is the structural representation at first visual angle of the transformer framework of a kind of transformer of embodiment 2 of the present utility model.

Fig. 3 is the structural representation at second visual angle of the transformer framework of a kind of transformer of embodiment 2 of the present utility model.

Fig. 4 is the structural representation at the 3rd visual angle of the transformer framework of a kind of transformer of embodiment 2 of the present utility model.

Include in figure:

1---E-type magnetic core, 11---tongue piece;

The width of W1---tongue piece;

W2---the total length of E-type magnetic core;

2---transformer framework, 21---window, 22---wire casings;

The width of W3---window;

The width of W4---wire casing.

Embodiment

With the following Examples the utility model is further described.

embodiment 1.

A kind of magnetic core of transformer of the present embodiment, as shown in Figure 1, described magnetic core is E-type magnetic core 1, and described E-type magnetic core 1 comprises the tongue piece 11 being positioned at centre, and the ratio of the width of the tongue piece 11 of described E-type magnetic core 1 and the total length of described E-type magnetic core 1 is 23:82.

Concrete, be that the architecture advances of the magnetic core of the transformer of EI41 is for model: retain its apparent size constant, namely described E-type magnetic core 1 total length or 41mm is constant, be 11.5mm by the reduced width of its tongue piece 11.

Described E-type magnetic core 1 is silicon steel sheet magnetic core.

The E-type magnetic core 1 of the present embodiment, by reducing the width of the tongue piece 11 of E-type magnetic core 1, making iron loss reduce, can reduce the no-load loss of transformer.

embodiment 2.

A kind of transformer of the present embodiment, comprise the magnetic core of transformer of embodiment 1, also include transformer framework 2, as shown in Figures 2 to 4, described transformer framework 2 comprises the window 21 of the tongue piece for plugging E-type magnetic core and is positioned at two wire casings 22 of described window 21 both sides, and the ratio of the width of described window 21 and a described wire casing 22 is 8:5.

Concrete, being the improvement of the transformer framework 2 of EI41 for model is: to retain its apparent size be the width summation of window 21 and two described wire casings 22 is that 27mm is constant, improvement is the width of the tongue piece 11 of the magnetic core of coupling embodiment 1, be 12mm by the reduced width of the tongue piece 11 of transformer framework 2, like this, the width of a described wire casing 22 is 7.5mm.

The width of the tongue piece 11 of the magnetic core of prior art is larger, then the window 21 of transformer framework 2 also will do larger, the width of the window 21 of such transformer framework 2 is just little, the number of turn of coiling is just few, cause the resistance value of winding less, inductance value is also little, and total impedance is just little, during energising, electric current is very large, and no-load loss is just large.

And the present embodiment is due to the reduced width of the tongue piece 11 of E-type magnetic core 1, the window 21 for the tongue piece 11 plugging E-type magnetic core 1 of transformer framework 2 can be made also can to reduce, when the apparent size of transformer framework 2 is constant, the width of the wire casing 22 of transformer framework 2 can be increased, so just can how around enamelled wire, the number of turn of enamelled wire is many, and the no-load loss of transformer is just little.

Finally should be noted that; above embodiment is only in order to illustrate the technical solution of the utility model; but not the restriction to the utility model protection range; although done to explain to the utility model with reference to preferred embodiment; those of ordinary skill in the art is to be understood that; can modify to the technical solution of the utility model or equivalent replacement, and not depart from essence and the scope of technical solutions of the utility model.

Claims (8)

1. a magnetic core of transformer, described magnetic core is E-type magnetic core, and described E-type magnetic core comprises the tongue piece being positioned at centre, it is characterized in that: the ratio of the tongue piece width of described E-type magnetic core and the total length of described E-type magnetic core is 23:82.

2. a kind of magnetic core of transformer as claimed in claim 1, is characterized in that: described tongue piece width is 11.5mm.

3. a kind of magnetic core of transformer as claimed in claim 2, is characterized in that: the total length of described E-type magnetic core is 41mm.

4. a kind of magnetic core of transformer as claimed in claim 1, is characterized in that: described E-type magnetic core is silicon steel sheet magnetic core.

5. a transformer, comprise the magnetic core of transformer of any one in claims 1 to 3, also comprise transformer framework, it is characterized in that: described transformer framework comprises the window of the tongue piece for plugging described E-type magnetic core and is positioned at two wire casings of described window both sides, and the ratio of described window and a described wire casing width is 8:5.

6. a kind of magnetic core of transformer as claimed in claim 5, is characterized in that: described window and two described wire casing width summations are 27mm.

7. a kind of magnetic core of transformer as claimed in claim 6, is characterized in that: the width of described window is 12mm.

8. a kind of magnetic core of transformer as claimed in claim 7, is characterized in that: a described wire casing width is 7.5mm.