CN217280387U

CN217280387U - Combined transformer framework with safe insulation distance

Info

Publication number: CN217280387U
Application number: CN202123208560.0U
Authority: CN
Inventors: 李杨兵; 王洁; 何马超
Original assignee: Suzhou Meanwell Technology Co ltd
Current assignee: Suzhou Meanwell Technology Co ltd
Priority date: 2021-12-20
Filing date: 2021-12-20
Publication date: 2022-08-23
Anticipated expiration: 2031-12-20

Abstract

The utility model provides a combined transformer framework with safe insulation distance, which is characterized in that the combined transformer framework comprises a framework and a box body, wherein the framework is embedded in the box body and matched with the box body; the framework is provided with a winding post, a matching footing is arranged below the winding post, and the matching footing penetrates into the box body and is matched with the box body; one side of the matching bottom foot is provided with a wiring pin. The utility model provides a pair of combination formula transformer skeleton of safe insulation distance, spout equipment about adopting, fix a position the wiring pin through concave type spout and outer L type outer fringe of following, can provide the span precision of higher wiring pin, the low pressure side is qualified for the next round of competitions from winding skeleton below simultaneously, upwards turn over again after C type groove, after the box body has been assembled, turn over downwards again from the box body upper groove, connect the wiring pin, reach creepage distance requirement, under the prerequisite that does not influence overall dimension, increase creepage distance, improve the assembly precision.

Description

Combined transformer framework with safe insulation distance

Technical Field

The utility model relates to a safe insulation distance's combination formula transformer skeleton.

Background

At present, a photovoltaic power generation system is gradually changed from 600V/800V direct-current voltage to a 1500V direct-current high-voltage system, particularly on a large photovoltaic project, due to the fact that 1500V system cost has absolute advantages, the current new project is basically a high-voltage 1500V system, and the voltage of the system is improved to provide higher requirements for the design of a photovoltaic isolation power supply.

The safety regulation of EN62109 requires 1500V system, internal pollution level PD2, and the creepage distance is 11mm, if it needs to satisfy the altitude of 5000m, 11 × 1.48 is 16.28mm, so the huge creepage distance needs to make a challenge to the transformer skeleton.

The size of a conventional framework is simply improved to meet the requirement of creepage distance, so that the use cost is obviously increased, the larger size of the framework occupies a large space, the integral installation of a product is influenced, and the traditional framework cannot adapt to the use of the product, so that the framework structure needs to be redesigned.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem that: the utility model provides a safe insulation distance's combination formula transformer skeleton aims at realizing long distance's wiring through designing skeleton structure for the combination assembled structure, the distance that utilizes between skeleton and the box body to realize safe creepage distance, fix a position the position of PIN foot when skeleton and box body are fixed a position each other, improve the span precision of PIN foot, solve the problem that traditional skeleton can't control PIN foot distance.

In order to solve the technical problem, the technical scheme of the utility model is that: a combined transformer framework with a safe insulation distance comprises a framework and a box body, wherein the framework is embedded in the box body and matched with the box body; the framework is provided with a winding post, a matching footing is arranged below the winding post, and the matching footing extends into the box body and is matched with the box body; a wiring pin is arranged on one side of the matching bottom foot, and the wiring pin is arranged on the outer side of the box body after being assembled, is electrically connected and is matched with the box body;

the outer side edge of the wiring pin is provided with an outer connecting groove, one side of the outer connecting groove is opened and matched with the box body.

Furthermore, the inner wall of the box body is provided with connecting bosses all around, and the connecting bosses are distributed along the vertical direction and are matched with the inner connecting grooves or the outer connecting grooves.

Furthermore, one side of the box body is provided with an opening, and the connecting lug boss positioned at the opening and the outer wall of the box body form an L-shaped appearance to be matched with the outer connecting groove.

Furthermore, the inner connecting groove and the outer connecting groove are provided with two grooves which are symmetrically distributed below the framework and correspond to the connecting lug bosses of the box body.

Furthermore, skeleton below be provided with C type groove, C type groove span the bottom of skeleton, follow after the cable passes through the wire winding C type groove stretch out, upwards turn over and fold.

Compared with the prior art, the utility model provides a pair of safe insulation distance's combination formula transformer skeleton, spout equipment about adopting, fix a position the wiring pin through concave type spout and outer edge L type outer fringe, can provide the span precision of higher wiring pin, the low pressure side is qualified for the next round of competitions from the bobbin below simultaneously, upwards turn over again after C type groove, after the box body has been assembled, turn over downwards again from the box body upper groove, connect the wiring pin, reach creepage distance requirement, under the prerequisite that does not influence overall dimension, increase creepage distance, improve the assembly precision.

Drawings

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

Fig. 2 shows a schematic structural diagram of the framework of the present invention.

FIG. 3 is a schematic view of the structure of the box body of the present invention

Wherein: 1. the transformer comprises a framework, a box body 2, a winding post 3, a matching bottom foot 4, a wiring pin 5, an inner connecting groove 6, an outer connecting groove 7, a connecting boss 8 and a C-shaped groove 9.

Detailed Description

As shown in the figure, the combined transformer framework with the safe insulation distance comprises a framework 1 and a box body 2, wherein the framework 1 is embedded in the box body 2 and matched with the box body 2; the framework 1 is provided with a winding post 3, a matching footing 4 is arranged below the winding post 3, and the matching footing 4 extends into the box body 2 and is matched with the box body 2; a wiring pin 5 is arranged on one side of the matching bottom foot 4, and the wiring pin 5 is arranged on the outer side of the box body 2 after being assembled, is electrically connected and is matched with the box body 2;

the outside side of cooperation footing 4 on be provided with in-connection recess 6, in-connection recess 6 distribute along vertical direction, with box body 2 cooperate, the restriction is fixed skeleton 1 the outside limit of wiring pin 5 on be provided with outer connecting groove 7, outer connecting groove 7 one side opening, the cooperation of box body 2.

Furthermore, the inner wall of the box body 2 is provided with connecting bosses 8 on the periphery, and the connecting bosses 8 are distributed along the vertical direction and are matched with the inner connecting grooves 6 or the outer connecting grooves 7.

Furthermore, one side of the box body 2 is provided with an opening, and the connecting boss 8 positioned at the opening and the outer wall of the box body 2 form an L-shaped appearance to be matched with the outer connecting groove 7.

Furthermore, the inner connecting groove 6 and the outer connecting groove 7 are arranged in two numbers, symmetrically distributed below the framework 1 and corresponding to the connecting boss 8 of the box body 2.

Further, skeleton 1 below be provided with C type groove 9, C type groove 9 span the bottom of skeleton 1, the cable passes through after the wire winding follow C type groove 9 stretch out, turn over the book upwards.

Finally, it should be noted that the above embodiments are only used for illustrating the technical solutions of the present invention and not for limiting the technical solutions, and those skilled in the art should understand that those modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions, and all should be covered in the scope of the claims of the present invention.

Claims

1. The combined transformer framework with the safe insulation distance is characterized by comprising a framework and a box body, wherein the framework is embedded in the box body and matched with the box body; the framework is provided with a winding post, a matching footing is arranged below the winding post, and the matching footing extends into the box body and is matched with the box body; a wiring pin is arranged on one side of the matching bottom foot, and the wiring pin is positioned on the outer side of the box body after being assembled, is electrically connected and is matched with the box body;

2. The framework of claim 1, wherein the connection bosses are arranged on the periphery of the inner wall of the box body and distributed in the vertical direction to be matched with the inner connection grooves or the outer connection grooves.

3. The framework of claim 2, wherein an opening is formed at one side of the box body, and the connecting boss at the opening and the outer wall of the box body form an L-shaped shape to match with the outer connecting groove.

4. The framework of claim 2, wherein two inner connection grooves and two outer connection grooves are symmetrically distributed below the framework and correspond to the connection bosses of the box body.

5. The framework of claim 1, wherein a C-shaped groove is formed below the framework, the C-shaped groove stretches across the bottom of the framework, and a cable extends out of the C-shaped groove after being wound and turns upwards.