RU81846U1 - TRANSFORMER HOUSING - Google Patents

Abstract

1. The utility model relates to electrical engineering. 2. Scope: production of explosion-proof transformer enclosures. 3. The essence of the utility model: at least in one place on the upper part of the body, along its longitudinal axis, the corrugations are separated by a heat-removing element. 4. Technical result: increased manufacturability and rigidity of the explosion-proof transformer housing. 4 claims, 2 sheets of drawings.

Description

The utility model relates to electrical engineering, namely to enclosures (flameproof enclosures) of explosion-proof electrical equipment, for example, transformer enclosures and transformer substations. Known building explosion-proof shaft transformer substation, a housing which is pierced by vertical pipes on the sides [1].

However, such a housing effectively cools a low-power transformer mainly in aerated mining, because it has a small cooling area.

Known building explosion-proof transformer substation, which is pierced by vertical pipes on the sides, and the side outer walls are corrugated [2].

However, such a case effectively cools the medium-power transformer, since it has an insufficiently efficient cooling system.

The closest in technical essence to the claimed utility model is the transformer substation housing, which is oval with corrugations located around the perimeter and enclosed between the end flanges [3].

The described housing design allows cooling of high power transformers.

The utility model is based on the task of changing the functionality of a transformer housing by increasing its cooling ability while increasing its manufacturability and rigidity.

For this, in the known transformer housing, the side walls and the upper part of which are corrugated, it is proposed that at least in one place of the upper part of the housing, along its longitudinal axis, the corrugations be separated by a heat-removing element.

The above features are different from the prototype, necessary and sufficient in all cases to which the scope of legal protection of the utility model applies.

The location of the heat sink element between the corrugations, along the longitudinal axis in the upper part of the housing, increases the heat transfer of the housing and at the same time

significantly increases mechanical strength and simplifies its manufacture.

It is also proposed that the heat sink element is in the form of a strip.

It is also proposed that the heat sink element is V-shaped.

It is also proposed that the heat sink element is in the form of a channel.

The proposed utility model is illustrated by drawings, where:

- figure 1 - shows the proposed transformer housing;

- figure 2 is a section aa the upper part of the body in figure 1;

- figure 3 - shows the upper part of the body, with corrugations separated by a heat sink element in a perspective view.

The housing of the explosion-proof transformer consists of flanges 1, between which are corrugated: side walls 2 and the upper part of the housing 3, in which the heat-removing element 4 is located.

When working under load, a power transformer 5 located in the middle of the housing generates heat, which is dissipated by the developed cooling surface of the corrugated side walls 2, the corrugated upper part of the housing 3 and the heat-removing element 4.

In addition, the heat-removing element 4 can be made in the form of a strip and, being located in the place of the most intense thermal state of the transformer case (in the upper part of the case 3), it separates the heated air into two symmetrical flows, while contributing to their laminar flow and developing a common surface increases the cooling rate of the case.

The presence of strip 4 in the upper part of the housing 3 allows the corrugated elements of the housing to be made of several parts, which greatly simplifies the design and reduces the cost of its manufacture, since the implementation of the housing with integral corrugation of its surface around the entire perimeter requires complex technology and expensive technological equipment. One way to manufacture such a housing to date has been the technology using hydraulic pressure.

At the same time, strip 4 is also a stiffener that increases the mechanical strength of the body.

And if for small thicknesses of the case (up to 1 mm) this technology is acceptable (cases - bellows), then for case thicknesses of the order of 4 mm (mandatory requirement

for explosion-proof enclosures of explosion-proof electrical equipment) this is already a difficult technological task.

The high efficiency of the transformer housing, as one of the largest and most complex flameproof enclosures of electrical devices, is achieved due to its multifunctionality, namely: high cooling capacity, manufacturability and necessary rigidity at low cost.

Information sources:

1. A.S. USSR No. 1403114 Explosion-proof sheath for mine dry transformers.

2. Declaration patent of Ukraine for utility model No. 6934 Explosion-proof transformer substation.

3. Transformer substations TEK company Becker. Germany (catalog TEK / RU / 2005-07-26).

Claims (4)

1. The transformer housing, the side walls and the upper part of which are corrugated, characterized in that, at least in one place of the upper part of the housing, along its longitudinal axis, the corrugations are separated by a heat-removing element. 2. The transformer housing according to claim 1, characterized in that the heat sink element is made in the form of a strip. 3. The transformer housing according to claim 1, characterized in that the heat sink element is made V-shaped. 4. The transformer housing according to claim 1, characterized in that the heat sink element is made in the form of a channel.