CN205407046U - Photovoltaic prepackage type cooling system of transformer substation - Google Patents

Abstract

The utility model discloses a photovoltaic prefabricated substation heat dissipation system in the field of power transformation equipment, which comprises a box body. There are air outlets on the top of both sides, the bottom of the box is fixed on the cable well, the bottom of the box is provided with a ventilation hole connected to the cable well, and an inverter cabinet is installed on the ventilation hole, and the top of the inverter cabinet is connected to the top through the exhaust air duct. The cover is connected, the top of the inverter cabinet is provided with a cabinet fan, the exhaust air duct is provided with an air duct fan, and the eaves of the top cover are provided with an air outlet connected to the outside of the box. The utility model equips the inverter cabinet with an independent The exhaust system enhances the heat dissipation performance of the inverter cabinet, ensures the long-term reliable operation of the substation, and can be used in regional power supply places.

Description

A photovoltaic prefabricated substation cooling system

technical field

The utility model relates to a power transformation equipment, in particular to a prefabricated transformer substation.

Background technique

The smart photovoltaic prefabricated substation (hereinafter referred to as: substation) is a substation that integrates the equipment of the originally distributed photovoltaic power station into a whole. This solution can effectively overcome the circulation between multiple inverters, solve the increased construction difficulty caused by the distribution of equipment in multiple places, and solve the large loss caused by longer conductors. However, it poses a new challenge to the heat dissipation and ventilation solutions commonly used in the industry: all the equipment is integrated into one box, and it is difficult to keep the temperature rise in the box below the rated value, which will cause the inverter to decrease in efficiency or shut down due to high temperature. In view of the above situation, we adjusted the design idea of the radiator and redesigned various heat dissipation devices, including the substation box shell, which also absorbed the structural advantages of the container, and partially used the standard parts of the container. Thereby fundamentally improving the heat balance effect in the box, increasing the heat dissipation efficiency, and achieving the purpose of effectively ensuring the long-term reliable operation of the substation.

Utility model content

The purpose of the utility model is to provide a photovoltaic preinstalled substation heat dissipation system, improve the heat dissipation efficiency of the box, and ensure the long-term reliable operation of the substation.

The purpose of this utility model is achieved in this way: a photovoltaic prefabricated substation heat dissipation system, including a box body, the top of the box body is provided with a hollow top cover, and the bottom of both sides of the box body is provided with air inlets. There are air outlets on the top of both sides of the box, the bottom of the box is fixed on the cable well, and the bottom of the box is provided with a ventilation hole connected to the cable well, and an inverter cabinet is installed on the ventilation hole, and the top of the inverter cabinet The exhaust air duct communicates with the top cover, the top of the inverter cabinet is provided with a cabinet fan, the exhaust air duct is provided with an air duct fan, and the eaves of the top cover are provided with an air outlet connected to the outside of the cabinet.

When the utility model works, the fan in the cabinet and the air channel fan cooperate with the cable well at the bottom, so that the cold air enters the box from the cable well. The resistance generated by the exhaust air from the lower part of the roof around the roof. Compared with the prior art, the utility model has the beneficial effect that the utility model enhances the heat dissipation performance of the inverter cabinet by equipping the inverter cabinet with an independent exhaust system, and ensures long-term reliable operation of the substation. The utility model can be used in regional power supply places.

In order to further enhance the heat dissipation effect of the air duct fan, the air duct fan is installed obliquely toward the outside of the box, and the included angle with the horizontal direction is 45°.

In order to enhance the waterproof performance of the box body and ensure that impurities in the air can be effectively filtered out, shutters are provided on the outside of the air inlet, and 32-mesh stainless steel filter screens are arranged on the inside of the air inlet.

In order to enhance the waterproof performance of the box body and enhance the heat dissipation performance in the box body, louvers are arranged on the outside of the air outlet, and axial flow fans are arranged on the inside of the air outlet.

In order to enhance the heat insulation performance of the box body and ensure the heat dissipation of the box body, the top cover includes a side plate connecting the bottom plate and the herringbone top plate sealed on the top of the box body. The exhaust air channel is connected to the through hole, the top plate includes the upper rainproof plate encapsulated on the insulation board, and the air outlet hole is opened at the bottom of the side plate.

In order to effectively filter out the impurities of the cold air at the bottom, a 32-mesh stainless steel dust filter is arranged on the ventilation hole.

In order to ensure that the temperature of the cold air in the cable well is at a low level, thereby enhancing the heat dissipation performance of the inverter cabinet, the depth of the cable well is greater than or equal to 1.2 meters.

Description of drawings

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

Among them, 1 cable well, 2 dust removal net, 3 filter screen, 4 air inlet, 5 louver, 6 cabinet, 7 inverter cabinet, 8 louver, 9 air outlet, 10 top cover, 10a side panel, 10b insulation board, 10c Rainproof plate, 10d bottom plate, 11 axial fans, 12 cabinet fans, 13 duct fans, 14 exhaust ducts.

detailed description

As shown in Figure 1, a photovoltaic prefabricated substation heat dissipation system includes a box body 6, and the top of the box body 6 is provided with a hollow top cover 10, and the top cover 10 includes a bottom plate 10d connected and sealed on the top of the box body 6 and a human body. The side plate 10a of the glyph top plate, the bottom plate 10d is a heat insulation plate, the bottom plate 10d is provided with a through hole communicating with the exhaust air duct 14, the top plate includes a rainproof plate 10c on the upper layer of the heat preservation plate 10b, and the air outlet is opened on the side plate 10a bottom, the bottom of both sides of the box body 6 is provided with an air inlet 4, the top of both sides of the box body 6 is provided with an air outlet 9, the bottom of the box body 6 is fixed on the cable well, the depth of the cable well is greater than or equal to 1.2 meters, the box body The bottom of 6 is provided with a ventilation hole connected to the cable well, and a 32-mesh stainless steel dust removal net 2 is arranged on the ventilation hole, and an inverter cabinet 7 is arranged on the top of the ventilation hole, and the top of the inverter cabinet 7 communicates with the top cover 10 through the exhaust air duct 14 , the top of the inverter cabinet 7 is provided with a fan 12 inside the cabinet, and an air duct fan 13 is arranged obliquely in the exhaust air duct 14. The eaves of the cover 10 are provided with air outlet holes communicating with the outside of the box body 6, the outside of the air inlet 4 is provided with louvers 85, the inside of the air inlet 4 is provided with a 32-mesh stainless steel filter screen 3, and the outside of the air outlet 9 is provided with shutters 85 , The inner side of the air outlet 9 is provided with an axial flow fan 11 .

When the utility model works, the heat dissipation of the overall space in the box body 6 is realized through the axial flow fan 11 and the air inlet 4 arranged on the air outlet 9, and the external air enters the box body 6 for heat exchange, and the heat dissipation in the inverter cabinet 7 The cooling air in the cable well passes through the inverter cabinet 7 through the cooperation of the fan 12 in the cabinet and the air duct fan 13 with the ventilation holes, and the contact between the cold air and the inverter realizes heat exchange, thereby cooling the inverter cabinet 7.

The utility model is not limited to the above-mentioned embodiments. On the basis of the technical solutions disclosed in the utility model, those skilled in the art can make some technical features based on the disclosed technical content without creative work. Replacement and deformation, these replacements and deformations are all within the protection scope of the present utility model.

Claims (7)

1. A photovoltaic prefabricated substation heat dissipation system, comprising a box, the top of the box is provided with a hollow top cover, the bottom of both sides of the box is provided with an air inlet, and the top of both sides of the box is provided with The air outlet is characterized in that the bottom of the box is fixed on the cable well, the bottom of the box is provided with a ventilation hole connected to the cable well, the ventilation hole is provided with an inverter cabinet, and the top of the inverter cabinet is ventilated The duct is connected with the top cover, the top of the inverter cabinet is provided with a fan in the cabinet, the exhaust air duct is provided with an air duct fan, and the eaves of the top cover are provided with an air outlet connected to the outside of the box. 2. A photovoltaic pre-installed substation heat dissipation system according to claim 1, wherein the air duct fan is installed obliquely towards the outside of the box body, and the included angle with the horizontal direction is 45°. 3. A photovoltaic prefabricated substation heat dissipation system according to claim 1 or 2, characterized in that, the outside of the air inlet is provided with louvers, and the inside of the air inlet is provided with a 32-mesh stainless steel filter. 4. A photovoltaic prefabricated substation heat dissipation system according to claim 1 or 2, characterized in that louvers are arranged outside the air outlet, and axial flow fans are arranged inside the air outlet. 5. A photovoltaic prefabricated substation heat dissipation system according to claim 1 or 2, characterized in that the top cover includes a side plate that connects the bottom plate and the herringbone top plate that are packaged on the top of the box body, and the bottom plate is In the heat insulation board, a through hole communicating with the exhaust air duct is opened on the bottom board, the top board includes an upper rainproof plate sealed on the heat preservation board, and the air outlet hole is opened at the bottom of the side board. 6. A photovoltaic prefabricated substation heat dissipation system according to claim 1 or 2, wherein a 32-mesh stainless steel dust removal net is provided on the ventilation hole. 7. A photovoltaic prefabricated substation heat dissipation system according to claim 1 or 2, characterized in that the depth of the cable well is greater than or equal to 1.2 meters.