CN107516833A - A double-layer roof structure of a box-type substation - Google Patents

Abstract

The invention discloses a kind of top cover of box type transformer substation structure, structure simple in construction, heat-sinking capability is strong, it is the box-type substation bi-layer tip cap structure for including big top cover and small top cover, through hole is provided with the middle part of described big top cover, the small top cover is fixed on above the through hole and leaves air duct between big top cover；The air duct is easy to the air circulation inside and outside box-type substation, ensure certain heat dispersion, in addition, because air duct is located at the top of box-type substation, the larger temperature difference is formed in transformer station in the height direction, so as to produce air pressure difference, stronger convection current is formed, increases the heat-sinking capability of box-type substation.

Description

A double-layer roof structure of a box-type substation

technical field

The invention relates to the field of electric equipment, in particular to a top cover structure of a box-type substation.

Background technique

The box-type substation is a factory-fabricated indoor and outdoor compact power distribution equipment, which organically combines functions such as high-voltage power receiving, transformer step-down, and low-voltage power distribution, and is installed in a moisture-proof, rust-proof, dust-proof, and Rat, fire prevention, anti-theft, heat insulation, fully enclosed, movable steel structure box, mechanical and electrical integration, a brand new substation with fully enclosed operation. The transformer is an indispensable device in the box-type substation, and it is also the main heating device. However, the working life of the transformer is greatly affected by the temperature. Long-term high temperature will shorten the life of the transformer. On the basis of heat dissipation in the transformer, a box-type substation is also required. The substation has better ventilation and heat dissipation conditions; in addition, the heat dissipation of the existing box-type substation box is mainly through the ventilation holes of the outer box wall and the top cover, but the current top cover structure has poor heat dissipation capacity, resulting in internal components of the box-type substation. Easily damaged by overheating.

Contents of the invention

The present invention aims to solve one of the above-mentioned technical problems in the related art at least to a certain extent. Therefore, the present invention proposes a box-type substation double-layer roof structure with simple structure and strong heat dissipation capability.

The technical solution adopted by the present invention to solve its technical problems is:

A box-type substation double-layer roof structure, including a large roof and a small roof, the middle of the large roof is provided with a through hole, the through hole is provided with a ventilation screen, and the small roof is fixed on the Above the large top cover and covering the ventilation screen, there is an air passage between the small top cover and the large top cover, and a small hole mesh board is arranged below the edge of the small top cover to prevent foreign matter from entering the box from the air passage. type substation.

As an improvement of the above technical solution, the large top cover is spliced into a truss shape by the cover plates and forms a slope, the slope of the large top cover is designed to facilitate the flow of rainwater to prevent water accumulation, and a keel reinforcement is provided at the joints of each cover plate connect.

As a further improvement of the above technical solution, the small top cover is connected to the keel, supported by the keel and installed and fixed

Further, the cover board has multiple layers, including a heat insulation board layer, a waterproof layer and a supporting board layer for supporting the heat insulation board.

Preferably, a rain shield is provided on the outside of the small hole mesh panel.

Further, the top of the small top cover is equipped with a hook.

The beneficial effects of the present invention are: the present invention has a simple structure and strong heat dissipation capability. It is a box-type substation double-layer roof structure including a large top cover and a small top cover. The middle part of the large top cover is provided with a through hole, so The small top cover is fixed above the through hole and there is an air passage between the large top cover; the air passage facilitates the air circulation inside and outside the box-type substation and ensures a certain heat dissipation performance. In addition, since the air passage is located in the box-type substation At the top of the substation, a large temperature difference is formed in the substation in the height direction, resulting in an air pressure difference, forming a strong convection, and increasing the heat dissipation capacity of the box-type substation.

Description of drawings

The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

Fig. 1 is a partial sectional view of the present invention;

Fig. 2 is a partial enlarged view of I;

Fig. 3 is a top view of the present invention.

detailed description

1 to 3, a box-type substation double roof structure of the present invention includes a large roof 1 and a small roof 2, the middle of the large roof 1 is provided with a through hole, in the through hole Ventilation net plate is provided, and described small top cover 2 is fixed on the top of big top cover 1 and covers described ventilation net plate, leaves air channel between described small top cover 2 and big top cover 1, in small top cover 2. A small-hole mesh plate 3 is arranged under the edge to prevent foreign matter from entering the box-type substation from the air channel. The air channel facilitates the air circulation inside and outside the box-type substation and ensures a certain heat dissipation performance. In addition, since the air channel is located on the top of the box-type substation, a large temperature difference is formed in the substation in the height direction, thereby generating an air pressure difference and forming a strong Convection, increasing the heat dissipation capacity of the box-type substation.

In this embodiment, the large top cover 1 is spliced into a truss shape by the cover plates and forms a slope. The slope of the large top cover 1 is designed to facilitate the flow of rainwater to prevent water accumulation, and keels are provided at the joints of the cover plates. 4 strengthen the connection; the small top cover 2 is connected to the keel 4, supported by the keel 4 and installed and fixed. The cover plate has multiple layers, including a heat insulation layer 11, a waterproof layer 13 and a supporting plate layer 12 for supporting the heat insulation board. The heat insulation layer 11 prevents heat transfer from the external environment from causing the temperature at the top cover to rise , so that the high temperature difference in the box is not enough to form a large convection.

In addition, in this embodiment, a rain shield 5 is provided on the outside of the small-hole mesh plate 3 to prevent rainwater from entering the box-type substation while ensuring ventilation and heat dissipation. Further, in order to facilitate the installation and lifting of the top cover, a hook 6 is arranged on the top of the small top cover 2 .

The above specific structure and size data are specific descriptions of the preferred embodiments of the present invention, but the invention is not limited to the embodiments, and those skilled in the art can also make Various equivalent modifications or replacements are included within the scope defined by the claims of the present application.

Claims (6)

1. A double-layer top cover structure of a box-type substation, characterized in that: it includes a large top cover and a small top cover, the middle part of the large top cover is provided with a through hole, and the through hole is provided with a ventilation mesh plate, so The small top cover is fixed on the top of the large top cover and covers the ventilating screen, an air channel is left between the small top cover and the large top cover, and a small hole mesh plate is arranged below the edge of the small top cover to prevent Foreign matter enters the box-type substation from the air channel. 2. A box-type substation double-layer roof structure according to claim 1, characterized in that: the large roof is spliced by cover plates into a truss shape and forms a slope, and the slope of the large roof is convenient for rainwater to flow In order to prevent water accumulation, keels are provided at the joints of each cover plate to strengthen the connection. 3. A box-type substation double-layer roof structure according to claim 2, characterized in that: the small roof is connected to the keel, supported by the keel and installed and fixed. 4. The double-layer roof structure of a box-type substation according to claim 2, characterized in that: the cover plate has multiple layers, including a heat insulation layer, a waterproof layer and a supporting plate for supporting the heat insulation board Floor. 5 . The double-layer roof structure of a box-type substation according to claim 1 , wherein a rain shield is arranged on the outside of the small-hole mesh plate. 6 . 6. The double-layer roof structure of a box-type substation according to any one of claims 1-5, wherein a hook is arranged on the top of the small roof.