CN201549348U - Shielding device of transformer ascending flanged base - Google Patents

Abstract

The utility model relates to a shielding device of a transformer ascending flanged base, belonging to the field of transformers. The utility model mainly solves the problems that the cost of the existing shielding device of the transformer ascending flanged base is high and the production technology is complex. The shielding device comprises a copper shielding layer. A steel shielding layer is arranged at the bottom part of the copper shielding layer. The steel shielding layer is designed to be an arc-shaped structure corresponding to the arc-shaped wall of the ascending flanged base. Through arranging the steel shielding layer on the copper shielding layer, the leakage flux of windings and the leakage flux of lead wires can be effectively reduced. Moreover, since the two shielding layers are jointly pressed and formed by the same die, the connection tightness of the two shielding layers is increased, the flux leakage is prevented, the production processes are reduced, the cost is reduced, the structure is simple and the mass production can be realized.

Description

A kind of power transformer enclosure screening arrangement

Technical field

The utility model relates to a kind of transformer, specifically a kind of screening arrangement of using on the rising seat of transformer of being suitable for.

Background technology

The loss of oil tank of transformer accounts for the major part of supplementary load loss, mainly be by the winding leakage flux, the lead-in wire leakage flux is passed case lid with the big electric current of sleeve pipe and is caused that three parts become, in order to reduce this part loss, and the local overheating of eliminating fuel tank, the high-power transformer fuel tank internal often adopts the electromagnetic shielding of the rising seat of being made by copper coin or aluminium sheet, make the designs such as round steel shading ring at magnetic screen and case lid position by silicon steel sheet, when the arcwall of making the seat that raises and copper shield, traditional manufacture method is the design feature casting processing blank according to the seat arcwall that raises, then with its Vehicle Processing to dimensional requirement, seat arcwall and the copper shield of raising produced separately, both are unified to be installed on the rising seat of transformer, connect defective tightness, leakage field is serious, complex manufacturing, of poor quality, the cost height.

The utility model content

Many deficiencies at existing power transformer enclosure screening arrangement, the utility model provides a kind of novel power transformer enclosure screening arrangement, it once is provided with the steel screen in the copper shield bottom by mould, the steel screen is made as the arcwall structure, copper shield directly is contained on the rising seat, both reduced production technology, and reduced cost again, quality also meets the requirements.

The concrete technical scheme that the utility model adopts is: a kind of power transformer enclosure screening arrangement, comprise copper shield, and it is characterized in that described copper shield bottom is provided with a steel screen, the described steel screen corresponding arcuate structure of an arcwall that is set as and raises; By being set, the steel screen can effectively play the effect that reduces winding leakage flux and lead-in wire leakage flux on copper shield, and two screens are the compression moulding together of same mould, can increase both Connection Density, prevent the leakage field phenomenon, reduce production technology, reduced cost.

Copper shield can use copper plate to make, and the steel screen can use carbon steel plate.

The beneficial effects of the utility model are: this power transformer enclosure screening arrangement is by being provided with the steel screen on copper shield, the steel screen can be used as the arcwall of the seat that raises, can save the technical process of independent manufacturing arcwall, and both connect closely, reduced leakage field, weld seam is full smooth after the compression moulding, and quality meets production requirement.

Description of drawings

Accompanying drawing 1 is the cutaway view of the utility model use on the seat that raises;

Accompanying drawing 2 is a vertical view of the present utility model.

The 1st, the seat that raises, the 2nd, copper shield, the 3rd, steel screen.

Embodiment

As shown in Figure 1, this power transformer enclosure screening arrangement comprises that copper screen 2 covers, and copper shield 2 bottoms are provided with a steel screen 3, the steel screen 3 corresponding arcuate structure of seat 1 arcwall that is set as and raises; By being set, steel screen 3 can effectively play the effect that reduces winding leakage flux and lead-in wire leakage flux on copper shield 2, and two screens are the compression moulding together of same mould, as shown in Figure 2, can increase both Connection Density, prevent the leakage field phenomenon, reduce production technology, reduced cost.

Copper shield 2 can be used T2Y δ 6 copper plates, this copper coin has good smart pressworkability, and welding performance preferably, and steel screen 3 can use the Q235-B carbon steel plate, copper plate spots weld on the thick Q235-B carbon steel plate of 6mm, rolls together then to make.

The copper shield of this technological design with the seat steel screen that raises with same mould compression moulding, No. one time the die mould quality is good, compacting back weld seam is full smooth, the steel screen can be used as the arcwall of the seat that raises, can save the technical process of independent manufacturing arcwall, and both connect closely, have reduced leakage field, and quality meets production requirement.

Other contents of not describing are prior art, do not repeat them here.

Claims (1)

1. a power transformer enclosure screening arrangement comprises copper shield, it is characterized in that, described copper shield bottom is provided with a steel screen, the described steel screen corresponding arcuate structure of an arcwall that is set as and raises.

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