CN206619831U - Transformer station - Google Patents

Abstract

The utility model relates to a substation, which comprises: a closed box body, including a low-pressure room independently arranged, a first ventilation part is arranged on the side wall of the low-voltage room, and the low-pressure room is connected with the external environment through the first ventilation part; The heat dissipation device includes a ventilation duct, the ventilation duct is connected to the closed box, the ventilation duct includes opposite first and second opening ends, the ventilation duct communicates with the low-pressure chamber through the first opening end, and the ventilation duct passes through the second The open end communicates with the external environment so that the low-pressure chamber communicates with the external environment through the ventilation duct; wherein, the first ventilation part is spaced apart from the first open end. The substation of the embodiment of the utility model can meet the requirements of heat dissipation as a whole, so that the temperature inside the substation is at an appropriate temperature, avoiding the situation that the temperature inside the substation is too high and causing electrical equipment to burn or short circuit, and ensuring that the electrical equipment inside the substation can be normal for a long time Work.

Description

substation

technical field

The utility model relates to the technical field of electric power equipment, in particular to a substation.

Background technique

Substation is a widely used power equipment in the construction and transformation of power system urban network. The substation integrates and installs various electrical equipment inside the substation. Since a variety of electrical equipment is concentrated in a relatively closed environment, when the substation is in use and powered on for a long time, the electrical equipment will generate a lot of heat during operation. Since the substation has relatively high temperature requirements, if the heat cannot be dissipated in time, it will affect the overall normal operation of the substation and easily cause damage to the electrical equipment inside the substation. For example, the electrical equipment installed in the low-voltage room of the substation has a large amount of heat dissipation, and when the internal temperature of the low-voltage room of the substation is too high, the internal electrical equipment will be burned or short-circuited.

Utility model content

The embodiment of the utility model provides a substation, which can meet the heat dissipation requirements as a whole, so that the temperature inside the substation is at an appropriate temperature, avoiding the situation that the temperature inside the substation is too high and causing electrical equipment to burn or short circuit, and ensuring that the electrical equipment inside the substation can be Work normally for a long time.

On the one hand, the embodiment of the utility model proposes a substation, which includes: a closed box, including a low-voltage chamber independently arranged, a first ventilation part is arranged on the side wall of the low-voltage chamber, and the low-voltage chamber communicates with the outside through the first ventilation part. The environment is connected; the ventilation and heat dissipation device includes a ventilation duct, the ventilation duct is connected to the closed box, the ventilation duct includes opposite first and second opening ends, and the ventilation duct communicates with the low-pressure chamber through the first opening end, The ventilation duct communicates with the external environment through the second open end so that the low pressure chamber communicates with the external environment through the ventilation duct; wherein, the first ventilation part is spaced apart from the first open end.

According to an aspect of the embodiment of the present invention, the closed box body further includes a voltage transformer chamber and a high pressure chamber independently arranged, the voltage transformer chamber is arranged between the low pressure chamber and the high pressure chamber, and the ventilation and heat dissipation device is arranged in the closed box body, the first The two open ends are arranged on the side wall of the high pressure chamber, and the ventilation pipe passes through the high pressure chamber and the variable pressure chamber in turn and communicates with the low pressure chamber.

According to an aspect of the embodiment of the utility model, the substation further includes a first partition and a second partition, and the first partition and the second partition separate the interior of the closed box into a low-voltage room and a transformer room that are independent of each other. and the high-pressure chamber, the ventilation duct passes through the second partition, and the first open end is connected with the first partition.

According to an aspect of the embodiment of the present invention, the first opening end is in sealing connection with the first partition, and the outer peripheral surface of the ventilation duct is in sealing connection with the second partition.

According to an aspect of the embodiment of the present invention, the first opening end is arranged on the top of the first partition, the second opening end is arranged on the top of the side wall of the high-pressure chamber, and the first ventilation part is arranged on the bottom of the side wall of the low-pressure chamber. end.

According to an aspect of the embodiment of the present utility model, the orientation of the first ventilation part is perpendicular to the orientation of the first opening end.

According to an aspect of the embodiment of the present invention, the ventilation and heat dissipation device further includes an isolation layer, and the isolation layer wraps the outer peripheral surface of the ventilation duct between the first opening end and the second opening end.

According to an aspect of an embodiment of the present utility model, the isolation layer includes thermal insulation wool or rock wool.

According to an aspect of the embodiment of the present invention, the ventilation and heat dissipation device further includes a fan, and the fan is arranged at the second opening end of the ventilation duct.

According to an aspect of the embodiment of the utility model, the side wall of the low-pressure chamber is also provided with a second ventilation part, the low-pressure chamber communicates with the external environment through the second ventilation part, and the second ventilation part is opposite to the first opening end and arranged at intervals , the first ventilation part and the second ventilation part are arranged at intervals.

According to an aspect of the embodiment of the present invention, a third ventilation part is provided on the side wall of the voltage transformation chamber, and the voltage transformation chamber communicates with the external environment through the third ventilation part.

The substation provided according to the embodiment of the utility model can meet the heat dissipation requirements as a whole, so that the temperature inside the substation is at an appropriate temperature, avoiding the situation that the temperature inside the substation is too high to cause electrical equipment to burn or short circuit, and ensure that the electrical equipment inside the substation can be Work normally for a long time. The substation provided by the embodiment of the utility model includes a closed box and a ventilation and heat dissipation device. The substation of the embodiment of the utility model realizes the airflow circulation in the low-voltage chamber through the first opening end of the ventilation and heat dissipation device and the first ventilation part, so that the heat generated in the low-voltage chamber can be dissipated to the external environment, and the temperature in the low-voltage chamber is kept at the electrical level. The suitable temperature for the normal operation of the equipment can protect the electrical equipment.

Description of drawings

The features, advantages and technical effects of the exemplary embodiments of the present invention will be described below with reference to the accompanying drawings.

Fig. 1 is the structural representation of the substation of the utility model embodiment;

Fig. 2 is a structural schematic diagram of another perspective of the substation according to the embodiment of the present invention;

Fig. 3 is a top view structural diagram of a substation in an embodiment of the present invention with the top removed;

Fig. 4 is a schematic cross-sectional structure diagram of a substation according to an embodiment of the present invention;

Fig. 5 is a cross-sectional schematic diagram of the ventilation duct provided with an isolation layer according to an embodiment of the present invention.

In the drawings, the drawings are not drawn to scale.

detailed description

The implementation of the present utility model will be further described in detail below in conjunction with the accompanying drawings and examples. The detailed description and accompanying drawings of the following embodiments are used to illustrate the principles of the present utility model, but cannot be used to limit the scope of the present utility model, that is, the utility model is not limited to the described embodiments.

In the description of the present utility model, it should be noted that, unless otherwise specified, the directions or positional relationships indicated by "left", "right", "inner", "outer", "front", "back" etc. are based on The orientation or positional relationship shown in the accompanying drawings is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood To limit the utility model. In addition, the terms "first", "second", etc. are used for descriptive purposes only, and should not be construed as indicating or implying relative importance. In the description of the present utility model, it should also be noted that, unless otherwise clearly stipulated and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection or a Detachable connection, or integral connection; can be directly connected, can also be indirectly connected through an intermediary. Those of ordinary skill in the art can understand the specific meanings of the above terms in the present utility model according to specific situations.

The substation provided by the embodiment of the utility model can transform high-voltage electricity into low-voltage electricity and provide the low-voltage electricity to the equipment to be charged. In one embodiment, the substation of this embodiment can charge electric vehicles. The substation in this embodiment is integrated and movable, which is convenient for transportation and assembly, and has low difficulty in construction. The overall ventilation and heat dissipation performance of the substation in this embodiment is good, and the heat generated by its internal equipment can be dissipated to the external environment in a timely and rapid manner, thereby avoiding internal electrical equipment being burned or short-circuited due to excessive internal temperature. Especially for the low-voltage room with large heat generation, the substation of this embodiment can effectively transfer the heat of the low-voltage room to the external environment, ensuring that the temperature of the low-voltage room is at a suitable temperature for the normal operation of various electrical equipment.

As shown in FIG. 1 , the substation of this embodiment includes a closed box 1 . The closed box body 1 includes a low-pressure chamber 2 provided independently. A first ventilation part 21 is provided on the side wall of the low pressure chamber 2 . The low-pressure chamber 2 communicates with the external environment through the first ventilation part 21 . The ventilation and heat dissipation device includes a ventilation duct 3 . The ventilation duct 3 is connected with the closed box body 1 . The ventilation duct 3 includes a first open end 31 and a second open end 32 opposite to each other. The ventilation duct 3 communicates with the low-pressure chamber 2 through the first open end 31 . The ventilation duct 3 communicates with the external environment through the second open end 32 so that the low pressure chamber 2 communicates with the external environment through the ventilation duct 3 . Wherein, the first ventilation portion 21 is spaced apart from the first opening end 31 .

The closed box 1 of this embodiment isolates its own internal space from the external environment. The closed box 1 of this embodiment is used to provide an installation foundation for electrical equipment, and at the same time form a protection for the electrical equipment, preventing rainwater or sundries from affecting the normal operation of the electrical equipment. The low-voltage room 2 of this embodiment can be equipped with low-voltage equipment, such as a rectifier cabinet, a direct current cabinet (DC cabinet), a control cabinet or a switching cabinet. Since the low-pressure chamber 2 of this embodiment is independently installed, when low-voltage equipment is installed inside, the heat generated by the operation of the low-voltage equipment will gather in the space of the low-pressure chamber 2, making the temperature in the low-pressure chamber 2 rise. The substation of this embodiment inputs/outputs airflow into/out of the low-voltage chamber 2 through the ventilation and heat dissipation device and the first ventilation part 21 provided on the side wall of the low-voltage chamber 2, so as to ventilate and dissipate the low-voltage chamber 2. The airflow with a lower temperature in the external environment can exchange heat with the airflow with a higher temperature in the low-pressure chamber 2 through the ventilation and heat dissipation device and the first ventilation part 21, so as to effectively reduce the internal temperature of the low-pressure chamber 2 and ensure the internal temperature of the low-pressure chamber 2. The installed electrical equipment is working properly. The material of the closed box 1 in this embodiment is a metal material, such as steel, iron or aluminum alloy, so that the closed box 1 itself can also conduct heat.

As shown in FIG. 1 and FIG. 2 , the ventilation and heat dissipation device of this embodiment includes a ventilation duct 3 . The ventilation duct 3 of this embodiment includes a first open end 31 and a second open end 32 . The first ventilation part 21 is spaced apart from the first opening end 31 to ensure that the external airflow entering the low-pressure chamber 2 through one of the first ventilation part 21 and the first opening end 31 is fully heated with the airflow inside the low-pressure chamber 2. exchange, and then the heat-exchanged mixed air is discharged from the other to the external environment. The first ventilating portion 21 and the first opening end 31 may be spaced apart from each other or adjacent to each other, so that the positions of the first ventilating portion 21 and the first opening end 31 are staggered. When the first ventilation part 21 provided in the low-pressure chamber 2 inputs airflow into the low-pressure chamber 2 , the first open end 31 is used for outputting airflow. When the first ventilation part 21 provided in the low-pressure chamber 2 outputs airflow to the low-pressure chamber 2 , the first open end 31 is used for inputting airflow. The ventilation duct 3 in this embodiment has a predetermined length to meet industrial design requirements. In one embodiment, after the substation of this embodiment is assembled, the horizontal distance between the first ventilation part 21 and the second opening end 32 is guaranteed to be greater than 10m, so as to meet the heat dissipation requirement and ensure the heat dissipation effect. The ventilation duct 3 of this embodiment is connected with the closed box body 1 to realize its own installation and positioning. The ventilation duct 3 in this embodiment can be arranged outside the closed box 1 or inside the closed box 1 . In one embodiment, the first open end 31 of the ventilation duct 3 can protrude into the low-pressure chamber 2 , and can also be connected to the side wall of the low-pressure chamber 2 . The second open end 32 can be set on the side wall of the low-pressure chamber 2 , or can be set on the outside of the closed box 1 . The ventilation duct 3 in this embodiment may be a straight duct or a curved duct. The ventilation duct 3 of this embodiment is a hollow structure. The cross section of the ventilation duct 3 in this embodiment may be polygonal or circular.

In one embodiment, as shown in FIG. 1 and FIG. 2 , the closed box 1 further includes a variable pressure chamber 4 and a high pressure chamber 5 which are independently provided. The variable pressure chamber 4 is arranged between the low pressure chamber 2 and the high pressure chamber 5 . The electrical equipment installed in the transformer chamber 4 is used to convert the high voltage input to the electrical equipment installed in the high voltage chamber 5 into low voltage electricity that meets requirements and deliver the low voltage electricity to the electrical equipment in the low voltage chamber 2 . The high-voltage chamber 5, the voltage-transforming chamber 4 and the low-voltage chamber 2 are independent of each other, which can avoid interference between the electrical equipment installed inside them, and the heat generated by the electrical equipment installed inside them will not be transferred to each other, thereby preventing the voltage-transforming chamber 4 And the high-pressure chamber 5 is affected by the heat generated by the low-pressure chamber 2 that produces a large amount of heat. The ventilation and heat dissipation device of this embodiment is arranged in the closed box 1, so that the ventilation and heat dissipation device is protected by the closed box 1, the safety of the ventilation and heat dissipation device is improved, and the overall structure of the substation is also made more compact. Improve the overall aesthetics of the substation. The second open end 32 of the ventilation and heat dissipation device in this embodiment is disposed on the side wall of the high pressure chamber 5 . The ventilation pipe 3 passes through the high-pressure chamber 5 and the pressure-transformation chamber 4 in sequence and communicates with the low-pressure chamber 2 . The second open end 32 of the ventilation and heat dissipation device is arranged on the side wall of the high pressure chamber 5 away from the low pressure chamber 2, which is conducive to increasing the horizontal distance between the first ventilation part 21 and the second open end 32 to the greatest extent, so that On the premise of ensuring that the horizontal distance between the first ventilation part 21 and the second opening end 32 meets the design requirements, the overall structure of the substation can be designed more compact, thereby reducing the overall volume of the substation.

In one embodiment, as shown in FIG. 3 and FIG. 4 , the substation further includes a first partition 6 and a second partition 7 . The first partition 6 and the second partition 7 are respectively connected to the inner wall of the closed box 1 . The first partition 6 and the second partition 7 of this embodiment can be detachably connected with the closed box 1, which improves the convenience of assembly. The first partition 6 and the second partition 7 divide the inside of the closed box 1 into a low-pressure chamber 2 , a variable-voltage chamber 4 and a high-pressure chamber 5 which are independent of each other. One side of the first partition 6 is the low pressure chamber 2 , and the other side is the variable pressure chamber 4 . One side of the second partition 7 is the variable pressure chamber 4 , and the other side is the high pressure chamber 5 . The first open end 31 of the air duct 3 is connected to the first partition 6 . The second open end 32 of the ventilation duct 3 is disposed on the side wall of the high pressure chamber 5 . The ventilation duct 3 passes through the second partition 7 . The first partition 6 and the second partition 7 can support the ventilation duct 3 to ensure the positional stability of the ventilation duct 3 . The first open end 31 of the ventilation duct 3 in this embodiment can be fixedly connected to one side of the first partition 6 by means of screws or welding. An opening is provided on the first partition 6 for mating connection with the first opening end 31 . The first baffle 6 and the second baffle 7 of this embodiment may include an insulating layer to insulate and isolate the low-voltage chamber 2, the voltage-transformation chamber 4 and the high-voltage chamber 5, so as to avoid interference between the electrical equipment arranged inside each other. , Improve the working stability and safety of the substation.

In one embodiment, as shown in FIG. 4 , the first open end 31 of the ventilation duct 3 is in sealing connection with the first partition 6 . A sealing gasket or a sealant is applied between the end surface or the outer peripheral surface of the first opening end 31 and the first separator 6 to realize the sealing between the two. The outer peripheral surface of the ventilation duct 3 is in sealing connection with the second partition 7 . A sealing gasket or a sealant can be applied between the outer peripheral surface of the ventilation duct 3 and the second partition 7 to realize the sealing between the two. After the air duct 3 is sealed and connected between the first dividing plate 6 and the second dividing plate 7, the air flow between the low-pressure chamber 2, the voltage-transforming chamber 4 and the high-pressure chamber 5 can be avoided, and the heat of the low-pressure chamber 2 can be prevented from flowing to The transformer chamber 4 and the high-voltage chamber 5 are dissipated, thereby ensuring that all the heat in the low-voltage chamber 2 is dissipated into the external environment through the airflow path formed by the ventilation heat dissipation device and the first ventilation part 21, improving the heat dissipation efficiency of the substation, and avoiding the heat dissipation of the low-voltage chamber 2. The heat enters the voltage transformation chamber 4 and the high pressure chamber 5 and affects the electrical equipment in the voltage transformation chamber 4 and the high pressure chamber 5 .

In one embodiment, as shown in FIG. 4 , the first open end 31 is disposed on the top of the first partition 6 . The first ventilation part 21 is disposed at the bottom end of the sidewall of the low pressure chamber 2 . In this way, the airflow input into the low-pressure chamber 2 from one of the first ventilation part 21 and the first open end 31 can squeeze the airflow in the low-pressure chamber 2 from the top or bottom of the low-pressure chamber 2, forcing the airflow in the low-pressure chamber 2 to The air flow from the air flows towards the other of the first ventilating portion 21 and the first opening end 31, which is beneficial to squeeze the air flow in the low-voltage chamber 2 out of the low-voltage chamber 2 and improve the heat dissipation capacity of the substation. When the first open end 31 is used to input the airflow to the low-pressure chamber 2, and the first ventilation part 21 is used to output the airflow to the external environment, the airflow input from the first open end 31 at the top of the first partition 6 can flow from the low-pressure chamber 2 gradually descends, so that the airflow in the low-pressure chamber 2 can be squeezed to the bottom of the low-pressure chamber 2, and then discharged from the first ventilation part 21, so that the cold airflow entering the low-pressure chamber 2 from the outside will dissipate the heat in the low-pressure chamber 2. Airflow carries away. The second open end 32 is arranged on the top of the side wall of the high pressure chamber 5. On the one hand, it prevents the ventilation duct 3 from occupying the lower installation space of the high pressure chamber 5 and interferes with the position of the subsequent cabinets, thereby improving the space utilization rate of the high pressure chamber 5; On the other hand, the second open end 32 is approximately at the same level as the first open end 31, so that the air pressures at the first open end 31 and the second open end 32 are approximately equal, thereby facilitating air flow between the first open end 31 and the second open end 32. The flow between the second open ends 32 avoids the situation that the fluidity of the air flow is affected due to the air pressure imbalance between the first open end 31 and the second open end 32 . The top end of the side wall of the high pressure chamber 5 in this embodiment is the top end of the side wall of the high pressure chamber 5 .

In one embodiment, as shown in FIG. 1 , the orientation of the first ventilation portion 21 is perpendicular to the orientation of the first opening end 31 . In this way, the distance between the first ventilation part 21 and the second open end 32 can be extended, so that the flow path of the airflow in the low-pressure chamber 2 becomes longer, and the airflow needs to change the flow direction before it can be discharged from the low-pressure chamber 2, so that the airflow can enter from the external environment. The airflow to the low-pressure chamber 2 can fully perform heat exchange with the airflow inside the low-pressure chamber 2 and electrical equipment, thereby improving the heat dissipation effect. When the substation of this embodiment includes the first partition 6, the first open end 31 is arranged on the first partition 6, and the first ventilation part 21 is arranged on the side wall of the low-voltage chamber 2 adjacent to the first partition 6 superior.

In one embodiment, as shown in FIG. 5 , the ventilation and heat dissipation device further includes an isolation layer 34 . The isolation layer 34 wraps the outer peripheral surface of the air duct 3 between the first open end 31 and the second open end 32 . The isolation layer 34 of this embodiment completely covers the outer peripheral surface of the ventilation duct 3 . The isolation layer 34 can isolate and protect the ventilation duct 3 . Like this, on the one hand, insulation layer 34 can prevent the air-flow outside ventilation duct 3 from carrying out heat exchange with the air-flow in ventilation duct 3 through the pipe wall of ventilation duct 3; The tube walls of the ventilation duct 3 are in contact, so as to prevent the water vapor carried by the airflow from condensing on the outer surface of the ventilation duct 3 to form water droplets. Especially when the ventilation duct 3 is located in the closed casing 1 and passes through the high pressure chamber 5 and the pressure transformation chamber 4, because the airflow temperature in the high pressure chamber 5 and the pressure transformation chamber 4 is higher than the self temperature of the ventilation duct 3, therefore When the water vapor carried by the airflow in the high-pressure chamber 5 and the pressure-transforming chamber 4 contacts the ventilation pipe 3, it is easy to condense on the outer surface of the ventilation pipe 3 and form water droplets. When the volume of water droplets accumulates to a large enough size, the water droplets will break away from the ventilation duct 3 and drop onto the electrical equipment in the transformer chamber 4 or high-voltage chamber 5, thereby causing failures such as short circuit or burning of the electrical equipment. After the isolation layer 34 is set, the isolation layer 34 isolates the air flow in the outer surface of the ventilation duct 3 from the high pressure chamber 5 and the pressure transformation chamber 4, thereby preventing the water vapor carried by the air flow in the high pressure chamber 5 and the pressure transformation chamber 4 from flowing in the ventilation duct 3. Condensation on the outer surface of the substation protects the electrical equipment installed in the high voltage chamber 5 and the transformer chamber 4, improving the overall safety of the substation. The isolation layer 34 in this embodiment includes thermal insulation wool or rock wool. The isolation layer 34 in this embodiment also includes a protective foil laid on the outer surface of the thermal insulation wool or rock wool. The protective foil of this embodiment forms protection for thermal insulation wool or rock wool. The protective foil in this embodiment may be aluminum foil.

In one embodiment, as shown in FIG. 2 , the ventilation and heat dissipation device further includes a fan 33 . The blower 33 is disposed at the second open end 32 of the air duct 3 . The fan 33 can perform forced ventilation to the low-pressure chamber 2 to improve the cooling effect. The fan 33 can assist in conveying or sucking the airflow from the ventilation duct 3 to increase the flow velocity of the airflow flowing between the second open end 32 of the ventilation duct 3 and the first ventilation part 21 of the low-pressure chamber 2, thereby The air circulation time in the low-pressure chamber 2 is shortened, and the heat dissipation efficiency is improved. The power and quantity of the fan 33 in this embodiment can be selected and adapted according to the highest heat output of all electrical equipment settled in the low-voltage room 2, so as to meet the cooling requirements of the substation.

In one embodiment, as shown in FIG. 1 and FIG. 4 , a second ventilation part 22 is further provided on the side wall of the low-pressure chamber 2 . The low-pressure chamber 2 communicates with the external environment through the second ventilation part 22 . Since there may be additional electrical equipment subsequently installed in the low-voltage chamber 2 , the installed electrical equipment will increase the heat generated in the low-voltage chamber 2 . The second ventilation part 22 can assist ventilation to cope with the subsequent installation of electrical equipment, to ensure that the low-voltage chamber 2 meets the heat dissipation requirements, and to improve the adaptability of the substation as a whole. In this embodiment, the second ventilation portion 22 is opposite to and spaced from the first opening end 31 . The substation in this embodiment can input air with a lower temperature into the low-voltage chamber 2 through the first open end 31 and the second ventilation part 22 . When the airflow input from the first opening 31 satisfies the heat dissipation requirements of the low-pressure chamber 2 , the second ventilation part 22 may be in a closed state. Since the second ventilation part 22 and the first opening end 31 are approximately at the same horizontal position, the air pressure at the second ventilation part 22 and the first opening end 31 is relatively balanced, so as to avoid the pressure from the second ventilation part 22 and the first opening end 31 at the same time. The airflow input into the low-pressure chamber 2 creates disturbances. The first ventilating portion 21 and the second ventilating portion 22 are spaced apart to avoid positional interference between the first ventilating portion 21 and the second ventilating portion 22 . Preferably, the second ventilation part 22 of this embodiment is disposed at the top of the side wall of the low pressure chamber 2 . The first open end 31 is located close to the top of the low pressure chamber 2 . The first ventilation part 21 is disposed at the bottom end of the sidewall of the low pressure chamber 2 . The orientation of the first ventilation portion 21 is substantially perpendicular to the orientation of the second ventilation portion 22 and the orientation of the first opening end 31 . The second ventilation part 22 of this embodiment includes a through hole and a louver covering the through hole. Furthermore, the second ventilation part 22 also includes a fan used in conjunction with the through hole, which can perform forced ventilation to the low-pressure chamber 2 and improve the heat dissipation effect.

In one embodiment, as shown in FIG. 1 , a third ventilation portion 41 is provided on the side wall of the voltage transformation chamber 4 . The voltage transformation chamber 4 communicates with the external environment through the third ventilation part 41 . The heat generated by the electrical equipment in the transformer chamber 4 can be dissipated into the external environment through the third ventilation part 41, thereby effectively reducing the temperature in the transformer chamber 4, ensuring that the temperature in the transformer chamber 4 is at an appropriate temperature so that the electrical equipment Normal work, improve the overall heat dissipation performance of the substation.

The substation of the embodiment of the utility model has good heat dissipation performance, and can meet the heat dissipation requirements as a whole, so that the temperature inside the substation is at an appropriate temperature, avoiding the situation that the temperature inside the substation is too high to cause electrical equipment to burn or short circuit, and ensure the internal temperature of the substation. Electrical equipment can work normally for a long time. The substation of the embodiment of the utility model is provided with ventilation and heat dissipation devices for the low-voltage chamber 2 with a large heat dissipation. The substation of the embodiment of the utility model realizes the airflow circulation in the low-voltage chamber 2 through the first opening end 31 and the first ventilation part 21 of the ventilation and heat dissipation device, so that the heat generated in the low-voltage chamber 2 can be dissipated to the external environment, so that the low-pressure The temperature of the chamber 2 is kept within the temperature range where the electrical equipment can work normally, avoiding the situation that the heat in the low-voltage chamber 2 cannot be dissipated in time and causing the internal temperature to be too high, and ensuring the working stability and safety of the electrical equipment.

The substation of an embodiment is described below, but the following embodiment does not limit the protection scope of the substation of the embodiment of the present invention.

As shown in FIGS. 1 and 2 , the substation of this embodiment includes a closed box 1 , a first partition 6 and a second partition 7 . The closed box 1 includes a left side panel 11 , a front side panel 12 , a right side panel 13 , a rear side panel 14 , a top panel and a bottom panel connected to each other. The first partition 6 and the second partition 7 are arranged in parallel between the left side board 11 and the right side board 13 . The first partition 6 is close to the left side plate 11 , and the second partition 7 is close to the right side plate 13 . The first partition 6 and the second partition 7 are respectively connected with the closed box 1 to form a low-pressure chamber 2 , a variable-pressure chamber 4 and a high-pressure chamber 5 which are independent of each other. The low-voltage chamber 2 , the variable-voltage chamber 4 and the high-pressure chamber 5 are sequentially arranged between the left side plate 11 and the right side plate 13 .

The bottom end of the front side panel 12 of the closed box body 1 of this embodiment is provided with a first ventilation part 21 . The first ventilation part 21 is close to the left side panel 11 . The first ventilation part 21 includes a through hole provided on the front side panel 12 and a louver covering the through hole. The second ventilation part 22 is provided on the left side panel 11 of the closed box 1 of this embodiment. The second ventilation part 22 includes a through hole provided on the left side plate 11 and a louver covering the through hole. The ventilation and heat dissipation device of this embodiment is arranged in the closed box 1 .

The ventilation pipe 3 of the ventilation and heat dissipation device in this embodiment includes a straight section and an expansion section connected with the straight section. The end of the straight section away from the expansion section is a first open end 31 , and the end of the expansion section away from the straight section is a second open end 32 . A mounting groove is provided near the middle of the top of the first partition 6 . The first open end 31 is installed and fixed corresponding to the installation groove. The second open end 32 is provided with a fan installation position. The ventilation and heat dissipation device also includes a fan 33 arranged on the fan installation position. The fan 33 is arranged corresponding to the ventilation duct 3 . The ventilation and heat dissipation device also includes louvers arranged outside the fan 33 and covering the fan 33 . The top of the right side plate 13 of the closed box 1 in this embodiment is provided with a through hole and a louver covering the through hole. The second open end 32 is fixedly connected to the right side plate 13 . The fan 33 is provided correspondingly to the through hole. A penetrating hole is provided near the middle of the top of the second partition 7 . The straight section of the ventilation duct 3 can pass through the penetration hole, and the expanded section is arranged in the high-pressure chamber 5 . An isolation layer 34 is provided on the outer surface of the ventilation duct 3 . The isolation layer 34 includes a thermal insulation wool layer or a rock wool layer and an aluminum foil laid outside the thermal insulation wool layer or rock wool layer. The ventilation duct 3 is arranged close to the top plate of the closed box 1 . After the transformer chamber 4 and the high-voltage chamber 5 are settled in the electrical equipment, the electrical equipment is arranged below the ventilation duct 3 .

The top of the front side plate 12 of the closed box 1 in this embodiment is provided with a third ventilation part 41 . The third ventilation part 41 is in communication with the voltage transformation chamber 4 . The third ventilation part 41 of this embodiment includes a through hole and a louver covering the through hole.

As for the low-voltage room 2 , the substation of this embodiment introduces the low-temperature airflow in the external environment into the low-voltage room 2 through the ventilation and heat dissipation device alone or the ventilation and heat dissipation device and the second ventilation part 22 jointly. The air with a lower temperature exchanges heat with the air with a higher temperature in the low-pressure chamber 2 . The airflow that has completed the heat exchange will exit the low-pressure chamber 2 from the first ventilation part 21 . As for the variable pressure chamber 4 , the air with higher temperature can be discharged to the external environment through the third ventilating part 41 for heat dissipation.

While the invention has been described with reference to a preferred embodiment, various modifications may be made and equivalents may be substituted for parts thereof without departing from the scope of the invention. In particular, as long as there is no structural conflict, the technical features mentioned in the various embodiments can be combined in any manner. The utility model is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims (11)

1. A substation, characterized in that, comprising: The closed box includes an independent low-pressure chamber, the side wall of the low-pressure chamber is provided with a first ventilation part, and the low-pressure chamber communicates with the external environment through the first ventilation part; The ventilation and heat dissipation device includes a ventilation duct connected to the closed box, the ventilation duct includes a first open end and a second open end opposite to each other, and the ventilation duct passes through the first open end Communicating with the low-pressure chamber, the ventilation duct communicates with the external environment through the second open end so that the low-pressure chamber communicates with the external environment through the ventilation duct; Wherein, the first ventilation part is spaced apart from the first opening end. 2. The substation according to claim 1, characterized in that, the closed box further comprises a voltage transformation chamber and a high-pressure chamber independently arranged, and the voltage transformation chamber is arranged between the low-voltage chamber and the high-pressure chamber Between, the ventilation and heat dissipation device is arranged in the closed box, the second opening end is arranged on the side wall of the high pressure chamber, and the ventilation pipe passes through the high pressure chamber and the pressure transformation chamber in turn And communicate with the low pressure chamber. 3. The substation according to claim 2, further comprising a first partition and a second partition, the first partition and the second partition separate the interior of the closed box The low pressure chamber, the variable pressure chamber and the high pressure chamber are independent from each other, the ventilation duct passes through the second partition, and the first open end is connected to the first partition. 4 . The substation according to claim 3 , wherein the first opening end is in sealing connection with the first partition, and the outer peripheral surface of the ventilation duct is in sealing connection with the second partition. 5. The substation according to claim 3, wherein the first opening end is arranged on the top of the first partition, and the second opening end is arranged on the top of the side wall of the high-voltage chamber, The first ventilation part is disposed at the bottom end of the side wall of the low-pressure chamber. 6 . The substation according to claim 1 , wherein the orientation of the first ventilation portion is perpendicular to the orientation of the first opening end. 7. The substation according to claim 1, wherein the ventilation and heat dissipation device further comprises an isolation layer, and the isolation layer wraps the outer periphery of the ventilation duct between the first open end and the second open end surface. 8. The substation according to claim 7, wherein the isolation layer comprises thermal insulation wool or rock wool. 9. The substation according to any one of claims 1 to 8, wherein the ventilation and heat dissipation device further comprises a fan, and the fan is arranged at the second open end of the ventilation duct. 10. The substation according to claim 1, characterized in that, a second ventilating part is also provided on the side wall of the low-voltage chamber, and the low-voltage chamber communicates with the external environment through the second ventilating part, The second ventilation part is opposite to the first opening end and arranged at a distance, and the first ventilation part is arranged at a distance from the second ventilation part. 11. The substation according to claim 2, characterized in that a third ventilating part is provided on the side wall of the transformer chamber, and the transformer chamber communicates with the external environment through the third ventilating part .