CN204407154U - A kind of outlet structure of three-dimensional wound core dry type transformer paper tinsel coiling - Google Patents

Abstract

The utility model discloses a wire-out structure of a three-dimensional wound core dry-type transformer foil-wound coil. and the tail connection end, the head connection end and the tail connection end are distributed along the circumferential direction of the coil body, and at the same time the head connection end and the tail connection end are staggered from each other and form an included angle α. The head connection end and the tail connection end are distributed along the circumferential direction of the coil body, the head connection end and the tail connection end are staggered from each other and form an angle α, so the arrangement of the air passage of the coil will not be affected. The distribution of the air passage can be more reasonable, which helps to increase the heat dissipation area of the coil air passage and reduce the temperature rise of the transformer. Under the premise, the width of the main channel of the coil can be moderately reduced, and the overall size of the transformer can be reduced.

Description

Outlet structure of a three-dimensional wound core dry-type transformer foil-wound coil

technical field

The utility model relates to the field of transformers, in particular to a wire-out structure of a three-dimensional wound iron core dry-type transformer foil-wound coil.

Background technique

At present, the common outlet method of the foil-wound coil of the three-dimensional wound core dry-type transformer is: the head connection end and the tail end connection end of the winding are set at the same position of the coil body, because the head connection end and the tail end connection end are set In the same position of the coil body, so there are the following disadvantages:

1. It affects the arrangement of coil air passages, which in turn affects the heat dissipation efficiency of the transformer;

2. The insulation distance between the head connection end and the tail end connection end needs to be ensured, which increases the size of the entire coil, which in turn affects the size of the overall transformer;

3. The copper bar of the outgoing line has a large current and a relatively high temperature, and the position of the head connection end and the tail connection end are too close to be conducive to heat dissipation;

4. In order to ensure the insulation distance between the low-voltage coil and the high-voltage coil, it is necessary to increase the size of the main air channel, and then increase the size of the entire coil, and even the size of the entire transformer;

5. It is not conducive to controlling the roundness of the entire coil;

6. The position of the head connection end and the tail connection end are too close, which is not conducive to external wiring operations.

Utility model content

In order to solve the above problems, the purpose of this utility model is to provide a simple structure, which can not only increase the heat dissipation area of the dry-type transformer low-voltage coil air passage, reduce the temperature rise of the transformer, reduce the size of the coil and the transformer, but also control the circle of the coil. The three-dimensional wound core dry-type transformer foil-wound coil outlet structure that reduces the amount of copper foil used in the coil.

The technical scheme that the utility model adopts for solving its technical problem is:

A three-dimensional wound core dry-type transformer foil-wound coil outlet structure, including winding wires wound on the coil main body, the two ends of the winding wires are respectively provided with a head connection end and a tail connection end for connecting with an external circuit , the head-to-head connection end and the tail-to-head connection end are distributed along the circumference of the coil body, and at the same time, the head-to-head connection end and the tail-to-head connection end are staggered from each other and form an included angle α.

As an improvement of the above technical solution, the angle size of the included angle α is 0°<α<360°.

As a further improvement of the above technical solution, the included angle α is 120°.

The beneficial effect of the utility model is: because the utility model distributes the head connection end and the tail connection end of the winding along the circumferential direction of the coil body, at the same time the head connection end and the tail connection end are staggered from each other and form a The included angle α, so it will not affect the arrangement of the coil air passage, the distribution of the coil air passage can be more reasonable, which helps to increase the heat dissipation area of the coil air passage, reduce the temperature rise of the transformer, and at the same time ensure the temperature rise of the transformer Under the premise of the insulation distance requirements between the head connection end and the tail end connection end, the width of the main channel of the coil can be appropriately reduced, thereby reducing the overall size of the transformer.

Description of drawings

Below in conjunction with accompanying drawing and specific embodiment, the utility model is described in further detail.

Fig. 1 is a structural representation of the utility model.

Detailed ways

Referring to FIG. 1 , a wire-out structure of a three-dimensional wound core dry-type transformer foil-wound coil includes a winding wire wound on the coil main body 10, and the two ends of the winding wire are respectively provided with header connecting ends for connecting with an external circuit. 11 and the tail connection end 12, here, as a preferred embodiment of the present utility model, the head connection end 11 and the tail connection end 12 are wiring copper bars, and the head connection end 11 and the tail connection end are connected The ends 12 are distributed along the circumferential direction of the coil main body 10, while the head connection end 11 and the tail connection end 12 are staggered from each other and form an angle α. Preferably, the angle α is 0°<α< 360°, further preferably, the included angle α is 120°.

Since the utility model distributes the head connection end 11 and the tail connection end 12 of the winding along the circumferential direction of the coil body 10, at the same time the head connection end 11 and the tail connection end 12 are staggered from each other and form an angle α , so it will not affect the arrangement of the coil air passages, the distribution of the coil air passages can be more reasonable, which helps to increase the heat dissipation area of the coil air passages, reduce the temperature rise of the transformer, and at the same time ensure the temperature rise of the transformer and the head Under the premise of the insulation distance requirements between the connecting end 11 and the tail connecting end 12, the width of the main air channel of the coil can be moderately reduced, thereby reducing the overall size of the transformer.

The above descriptions are only the preferred implementation modes of the present utility model, as long as the technical solutions that achieve the purpose of the utility model by basically the same means all fall within the scope of protection of the utility model.

Claims (3)

1. the outlet structure of a three-dimensional wound core dry type transformer paper tinsel coiling, comprise the coiling be wrapped on coil main body (10), the two ends of this coiling are respectively arranged with first head link (11) for being connected with external circuitry and tail head link (12), it is characterized in that: described first head link (11) and tail head link (12) distribute along the circumference of coil main body (10), first head link (11) and tail head link (12) also shape of mutually staggering has angle α simultaneously.

2. the outlet structure of a kind of three-dimensional wound core dry type transformer paper tinsel coiling according to claim 1, is characterized in that: the angular dimension of described angle α is 0 ° of < α < 360 °.

3. the outlet structure of a kind of three-dimensional wound core dry type transformer paper tinsel coiling according to claim 2, is characterized in that: the angle of described angle α is 120 °.