CN205178352U - Buried transformer substation - Google Patents

Abstract

The utility model discloses an underground substation, which comprises a prefabricated pit, an underground combined transformer is arranged in the pit, an operation port cover plate and a low-voltage cabinet are arranged on the top of the pit, and the feature is that the operation port cover plate It is composed of inner skin board, outer skin board and heat insulation layer. The heat insulation layer is sandwiched between the inner skin board and the outer skin board. The heat insulation layer is made of pearl cotton. The scheme provides an underground substation with good thermal insulation effect and low temperature rise.

Description

Buried substation

technical field

The utility model relates to an underground substation, which belongs to the field of electrical equipment.

Background technique

Buried transformers, also known as underground transformers, are called underground combined transformers in China. It installs in a pit, takes up no surface space, and can operate submerged in water for a period of time. It is suitable for urban distribution networks such as urban residential quarters, industrial parks, and urban traffic arterial roads. The use of underground transformers can save the area occupied by urban power distribution facilities and improve urban land utilization. However, due to the urban heat island effect, the temperature difference between day and night is large, and the buried substation is a sealed structure, which requires high temperature balance capability.

Utility model content

Aiming at the deficiencies in the prior art, the purpose of the utility model is to provide an underground substation with good thermal insulation effect and low temperature rise.

In order to achieve the above purpose, the utility model provides the following technical solutions: an underground substation, including a prefabricated pit, an underground combined transformer is installed in the pit, and an operating port cover and a low-voltage cabinet are arranged on the top of the pit. The operation port cover plate is composed of an inner skin board, an outer skin board and a heat insulation layer, the heat insulation layer is sandwiched between the inner skin board and the outer skin board, and the heat insulation layer is made of pearl cotton.

By adopting the above technical solution, the pearl cotton is expandable polyethylene, which has the advantages of shock resistance, heat insulation, sound insulation and anti-aging, and can better insulate the heat from the outside into the pit to ensure the balance of the temperature inside the pit.

Preferably, both the inner skin board and the outer skin board are made of iron sheets, and the surface of the inner skin board is coated with sound-absorbing paint.

By adopting the above technical scheme, the iron sheet can ensure the strength of the overall cover plate and protect the pearl cotton in the middle. The sound-absorbing coating can absorb the operating noise inside the pit, ensure the quiet operation of the substation, and avoid affecting the rest of the residents in the community.

Preferably, the surface of the outer skin panel is coated with reflective and heat-insulating paint.

By adopting the above-mentioned technical solution, the reflective heat-insulating coating achieves the purpose of heat insulation by efficiently reflecting sunlight, and avoids excessive temperature rise inside the pit in summer.

Preferably, the low-voltage cabinet is covered with a box-type protective shell.

By adopting the above technical solution, the box-type protective shell has a beautiful appearance and can protect the low-voltage cabinet from wind and rain. At the same time, LED lights can be installed inside the box-type protective shell to play the role of decoration and remind passers-by not to approach.

To sum up, compared with the prior art, the beneficial effect of the utility model is: through the effective heat insulation treatment of the only outlet connected to the outside world, the cover plate of the operation port ensures the temperature balance inside the pit and the temperature rise Low.

Description of drawings

Fig. 1 is the overall structural representation of the utility model;

Fig. 2 is a side view of the utility model;

Fig. 3 is an enlarged view of A in Fig. 2 of the present utility model.

Description of drawings: 1. Pit; 2. Combined transformer; 3. Low-voltage cabinet; 4. Operating port cover; 4a. Outer skin board; 4b. Heat insulation layer; 6. Sound-absorbing paint.

detailed description

Below in conjunction with accompanying drawing, the utility model is further described.

An underground substation, including a prefabricated pit 1, an underground combined transformer 2 is provided in the pit 1, and an operation port cover 4 and a low-voltage cabinet 3 are provided on the top of the pit 1, as shown in Fig. 3 , the operation port Cover plate 4 is made up of inner skin board 4c, outer skin board 4a and heat insulation layer 4b, heat insulation layer 4b is sandwiched between inner skin board 4c and outer skin board 4a, heat insulation layer 4b is made of pearl cotton. EPE is expandable polyethylene, which has the advantages of shock resistance, heat insulation, sound insulation, and anti-aging. It can better insulate heat from the outside and enter the pit 1 to ensure the balance of the temperature inside the pit 1.

Wherein, both the inner skin board 4c and the outer skin board 4a are made of iron sheet, and the surface of the inner skin board 4c is coated with sound-absorbing paint 6 . The iron sheet can ensure the strength of the overall cover plate and protect the pearl cotton in the middle. The sound-absorbing coating 6 can absorb the operating noise inside the pit 1 to ensure the quiet operation of the substation and avoid affecting the rest of the residents in the community.

Wherein, the surface of the outer skin panel 4a is coated with reflective heat-insulating paint 5 . The reflective heat-insulating paint 5 achieves the purpose of heat insulation by efficiently reflecting sunlight, and avoids the internal temperature of the pit 1 from rising too fast in summer. The outside of the low-voltage cabinet 3 is covered with a box-type protective shell. The box-type protective shell has a beautiful appearance and can protect the low-voltage cabinet 3 from wind and rain. At the same time, LED lights can be installed inside the box-shaped protective shell to decorate and remind passing pedestrians not to approach.

The above descriptions are only preferred implementations of the present utility model, and the protection scope of the present utility model is not limited to the above-mentioned embodiments, and all technical solutions under the idea of the present utility model all belong to the protection scope of the present utility model. It should be pointed out that for those skilled in the art, some improvements and modifications without departing from the principle of the utility model should also be regarded as the protection scope of the utility model.

Claims (4)

1. An underground substation, including a prefabricated pit, an underground combined transformer is arranged in the pit, and an operation port cover and a low-voltage cabinet are arranged on the top of the pit, and the feature is that the operation port cover is made of an inner skin Composed of board, outer skin board and heat insulation layer, the heat insulation layer is sandwiched between the inner skin board and the outer skin board, and the heat insulation layer is made of pearl cotton. 2. The buried substation according to claim 1, characterized in that: both the inner skin board and the outer skin board are made of iron sheets, and the surface of the inner skin board is coated with sound-absorbing paint. 3. The buried substation according to claim 2, characterized in that: the surface of the outer skin plate is coated with reflective and heat-insulating paint. 4. The buried substation according to claim 3, characterized in that: said low-voltage cabinet is covered with a box-type protective shell.