A substation heat dissipation mechanism and a prefabricated substation

Abstract

The utility model discloses a transformer substation heat abstractor and prefabricated transformer substation for prefabricated transformer substation relates to electrical equipment technical field, above -mentioned transformer substation heat abstractor includes air intake component, air intake and air outlet, air intake component includes the air intake channel of installation in transformer substation, and one end of air intake channel is equipped with the plenum chamber, and the plenum chamber is equipped with at least one opening, and the area of opening is less than the cross -sectional area of air intake channel, and the air intake is located in transformer substation, and is used to make inside transformer substation with outside lead through, and the one end of air intake channel away from plenum chamber is connected with the air intake, and the air intake is equipped with the air intake fan, and the air outlet is located in transformer substation, and is used to make inside transformer substation with outside lead through, satisfy the heat dissipation demand of large capacity transformer, avoid transformer and its component, copper row etc. Temperature is too high, and then influence insulation intensity and life, guarantee power system safe operation.

Description

Technical Field

[0001] This utility model relates to the field of electrical equipment technology, and more specifically, to a substation heat dissipation mechanism. Furthermore, this utility model also relates to a prefabricated substation incorporating the aforementioned substation heat dissipation mechanism. Background Technology

[0002] Prefabricated substations, as a type of power equipment manufactured in a factory and installed on-site, allow for better quality control and shorter construction periods due to their factory-based production process. Therefore, there is a significant demand for prefabricated substations in new energy projects. However, most wind and solar power projects require large land areas, and the power facilities they require have a much larger capacity than those for conventional products.

[0003] When a transformer has too large a capacity and is operating at full load or short-term overload, its heat dissipation capacity under its conventional structure will inevitably be insufficient. This will cause abnormal temperature rise in parts such as the transformer, connecting copper busbars, and transformer structural components, reducing insulation strength and affecting insulation life. In severe cases, problems such as coil surface cracking, heat shrink tubing cracking, and conduit curling may occur, affecting the safety of power operation.

[0004] In conclusion, how to improve the heat dissipation efficiency in substations is a problem that urgently needs to be solved by those skilled in the art. Utility Model Content

[0005] In view of this, the purpose of this utility model is to provide a substation heat dissipation mechanism that can meet the heat dissipation requirements of large-capacity transformers, avoid excessive temperature of transformers and their components, copper busbars, etc., which would affect insulation strength and lifespan, and ensure the safe operation of the power system.

[0006] Another objective of this invention is to provide a prefabricated substation that includes the aforementioned substation heat dissipation mechanism.

[0007] To achieve the above objectives, this utility model provides the following technical solution:

[0008] A substation heat dissipation mechanism for prefabricated substations, comprising:

[0009] An air intake assembly includes at least one air intake channel installed in the substation. One end of the air intake channel is provided with a pressurization chamber, and the pressurization chamber is provided with at least one opening. The area of ​​the opening is smaller than the cross-sectional area of ​​the air intake channel.

[0010] At least one air inlet is provided in the substation and is used to connect the interior of the substation with the outside. The end of the air intake channel away from the pressurization chamber is connected to the air inlet. An air intake fan is provided at the air inlet.

[0011] At least one exhaust vent is provided in the substation and is used to connect the interior of the substation to the outside.

[0012] Furthermore, in this invention, both the air inlet and the air outlet are located at the substation box door, and the air outlet is equipped with an exhaust fan.

[0013] Furthermore, the air intake channel is arranged along the side wall of the substation.

[0014] Furthermore, a corrugated pipe is provided between the air inlet channel and the air inlet in this utility model.

[0015] Furthermore, the air inlet assembly further includes:

[0016] A movable component is connected to the end of the bellows away from the air inlet channel and is used to control the movement of the bellows within the substation.

[0017] Furthermore, the air inlet assembly further includes:

[0018] A slide rail is arranged perpendicular to the side wall of the substation, and the moving part is slidably mounted on the slide rail.

[0019] Furthermore, the present invention provides a booster fan in the air inlet channel for increasing the air pressure in the booster chamber.

[0020] Furthermore, the opening of the pressurization chamber is provided with a flow guide.

[0021] Furthermore, the guide component of this invention has a mesh structure and is rotatably mounted on the pressurization chamber.

[0022] A prefabricated substation includes the substation heat dissipation mechanism described in any one of the above claims.

[0023] The substation heat dissipation mechanism provided by this utility model involves installing an air intake assembly inside the substation. The air intake assembly includes an air intake channel installed within the substation. One end of the air intake channel has a pressurization chamber with at least one opening. The area of ​​the opening is smaller than the cross-sectional area of ​​the air intake channel. The pressurization chamber is used to increase the pressure inside the chamber, thereby increasing the air velocity at the outlet. The air inlet is located within the substation and serves to connect the interior of the substation to the outside. The end of the air intake channel away from the pressurization chamber is connected to the air inlet. An intake fan is installed at the air inlet. In other words, the intake fan at the air inlet draws outside cold air into the air intake channel, pressurizes it within the pressurization chamber, and thus cool air is drawn out through the pressurization chamber. The increased air velocity at the cavity opening, coupled with the small fluid boundary layer and rapid heat exchange as the high-speed airflow passes over the coil surface, significantly enhances the heat dissipation capacity of the coil surface. This, in turn, increases the heat dissipation efficiency and effectiveness of the transformer within the substation, improving its operational stability. Simultaneously, the exhaust vent, located within the substation, facilitates communication between the substation's interior and the outside environment. The high-temperature air, after heat exchange, is quickly expelled from the substation through the exhaust vent, further enhancing the heat dissipation efficiency within the substation. Furthermore, the intake channel draws external cold air out of the transformer coil area within the substation, allowing the cold air to cool the transformer coil first, further improving the cooling efficiency of the transformer coil.

[0024] This utility model also provides a prefabricated substation including the above-mentioned substation heat dissipation mechanism. Attached Figure Description

[0025] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0026] Figure 1 This is a top view of the overall structure of the device provided by this utility model;

[0027] Figure 2 This is a structural schematic diagram of the overall side of the device provided by this utility model.

[0028] Figures 1-2 In the accompanying drawings, the reference numerals include:

[0029] 1. Air intake assembly; 101. Air intake fan; 102. Moving parts; 103. Slide rail; 104. Corrugated pipe; 105. Air intake channel; 106. Booster fan; 2. Booster chamber; 3. Air guide; 4. Exhaust fan. Detailed Implementation

[0030] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0031] The core of this utility model is to provide a heat dissipation mechanism for substations that can meet the heat dissipation needs of large-capacity transformers, prevent the transformer and its components, copper busbars, etc. from overheating, thereby affecting the insulation strength and lifespan, and ensuring the safe operation of the power system.

[0032] Another core aspect of this utility model is to provide a prefabricated substation that includes the aforementioned substation heat dissipation mechanism.

[0033] Please refer to Figure 2 A substation heat dissipation mechanism for prefabricated substations includes an air intake assembly 1, an air inlet, and an exhaust outlet. The air intake assembly 1 includes an air intake channel 105 installed inside the substation. One end of the air intake channel 105 is provided with a pressurization chamber 2. The pressurization chamber 2 is provided with at least one opening 201. The area of ​​the opening 201 is smaller than the cross-sectional area of ​​the air intake channel 105. The air inlet is located in the substation and is used to connect the interior of the substation with the outside. The end of the air intake channel 105 away from the pressurization chamber 2 is connected to the air inlet. An air intake fan 101 is provided at the air inlet. The exhaust outlet is located in the substation and is used to connect the interior of the substation with the outside.

[0034] It should be noted that, in this practical embodiment, in order to further save energy, a temperature sensor and a controller are installed inside the substation. The temperature sensor is electrically connected to the controller, and the intake fan 101 is electrically connected to the controller. When the temperature of the substation rises, the temperature sensor transmits a temperature signal to the controller. At this time, the controller controls the intake fan 101 to increase its speed, thereby increasing the air intake volume and further increasing the wind speed at the opening 201 of the booster chamber 2. When the temperature drops, the speed of the intake fan 101 can be reduced in real time to achieve the purpose of saving energy.

[0035] Optionally, in some embodiments, the air inlet channel 105 adopts a tubular structure and is made of PVC or PE materials, or better yet, metal materials. On the one hand, metal materials have good fire resistance, and on the other hand, metal materials have good thermal conductivity. When cold air from the outside enters the air inlet channel 105, it can exchange heat with the inside of the substation within the air inlet channel 105, further improving the cooling efficiency inside the substation.

[0036] Optionally, in some embodiments, the intake fan 101 may be a turbine fan, which is beneficial for increasing the pressure inside the booster chamber 2.

[0037] Optionally, in some embodiments, both the air inlet and the air outlet are provided with a rainproof structure, specifically, a rainproof cover, to prevent rainwater from entering the substation.

[0038] In the above embodiments, both the air inlet and the air outlet are equipped with filter screens or filter plates or other structures with filtering functions to prevent external mosquitoes from entering the substation.

[0039] Optionally, in some embodiments, air filters are provided at both the air inlet and the air outlet to filter out moisture in the air, prevent rainwater from entering the substation, and also prevent mosquitoes from entering the substation.

[0040] Optionally, in some embodiments, a number of openings 201 may be provided as needed, but the total area of ​​the number of openings 201 is less than the cross-sectional area of ​​the air inlet channel 105, so as to improve the pressurization purpose in the pressurization chamber 2.

[0041] In use, the air intake assembly 1 is installed inside the substation. The air intake assembly 1 includes an air intake channel 105 installed inside the substation. One end of the air intake channel 105 is provided with a pressurization chamber 2. The pressurization chamber 2 has at least one opening 201. The area of ​​the opening 201 is smaller than the cross-sectional area of ​​the air intake channel 105. The pressurization chamber 2 is used to increase the pressure inside the chamber, thereby increasing the wind speed at the outlet. The air inlet is located in the substation and is used to connect the inside of the substation with the outside. The end of the air intake channel 105 away from the pressurization chamber 2 is connected to the air inlet. An air intake fan 101 is provided at the air inlet. That is, through the air intake fan 101 at the air inlet, cold air from the outside is drawn into the air intake channel 105 and pressurized in the pressurization chamber 2, thus achieving cooling. The increased air velocity at the opening 201 of the pressurization chamber 2, with its high-speed airflow passing over the coil surface, results in a small fluid boundary layer and rapid heat exchange, significantly improving the heat dissipation capacity of the coil surface. This, in turn, enhances the heat dissipation efficiency and effectiveness of the transformer within the substation, improving its operational stability. Simultaneously, the exhaust vent is located within the substation, connecting the interior to the outside. The high-temperature air after heat exchange is quickly expelled from the substation through the exhaust vent, further improving the heat dissipation efficiency within the substation. Furthermore, external cold air is drawn out of the transformer coil within the substation through the air inlet duct 105, allowing the cold air to cool the transformer coil first, further enhancing the cooling efficiency of the transformer coil.

[0042] Please refer to Figure 1In some embodiments, both the air inlet and the air outlet are located at the substation box door, and the air outlet is equipped with an exhaust fan 4. That is to say, setting both the air inlet and the air outlet at the box door position facilitates the drilling work during processing, and also makes it convenient for users to inspect and maintain the air inlet fan 101 and the exhaust fan 4, reducing the difficulty of maintenance. At the same time, setting the exhaust fan 4 at the air outlet can greatly improve the efficiency of exhausting the high-temperature air inside the substation, so that the air circulation inside the substation is formed, further improving the cooling effect inside the substation.

[0043] In other embodiments, the air inlets and outlets may be located on the side walls or top of the substation.

[0044] Please refer to Figure 1 In some embodiments, the air intake channel 105 is arranged along the side wall of the substation. Specifically, the air intake channel 105 is set on the side wall of the substation and is arranged along the shape of the side wall, which helps to reduce the occupation of internal space and facilitates the maintenance of electrical components inside the substation.

[0045] Optionally, in some embodiments, several air inlet channels 105 are provided, and the booster pumps of the several air inlet channels 105 correspond to different positions of the transformer, which can further enhance the purpose of cooling the transformer as a whole.

[0046] In the above embodiment, the air inlet channel 105 can be a corrugated pipe 104, and an installation rod is provided inside the substation for fixing the booster chamber 2. The booster chamber 2 is a hollow shell structure. The installation rod can fix the booster chamber 2 in a preset position. During maintenance, the booster chamber 2 can be removed. The air inlet channel 105 of the corrugated pipe 104 can facilitate the movement of the booster chamber 2. Then, the installation position of the booster chamber 2 can be adjusted according to the heat generation in the substation during actual use, thereby further improving the cooling effect.

[0047] Please refer to Figure 1 In some embodiments, a corrugated pipe 104 is provided between the air inlet channel 105 and the air inlet. That is, the air inlet channel 105 and the air inlet are connected by a corrugated pipe 104. When the substation box door is opened, the corrugated pipe 104 can move with the box door to ensure that the air inlet and the air inlet channel 105 are always connected.

[0048] Optionally, in some embodiments, the air intake assembly 1 further includes a movable component 102, which is connected to the end of the corrugated pipe 104 away from the air intake channel 105 and is used to control the movement of the corrugated pipe 104 within the substation. That is, in this way, the corrugated pipe 104 is not connected to the box door, and the position of the air intake end of the corrugated pipe 104 is controlled by the movable component 102. When the box door is open, the maintenance worker can move the movable component 102 to adjust the position of the air intake end of the corrugated pipe 104, so that it moves to the inner wall of the substation, reducing the impact on maintenance. After the maintenance is completed, the air intake end of the corrugated pipe 104 is moved back to its original position.

[0049] In the above embodiment, the movable part 102 is a block structure and is installed on the air inlet end of the corrugated pipe 104. The bottom of the movable part 102 is provided with a plug-in protrusion, and the inside of the substation is provided with a plug-in groove. When the plug-in protrusion enters the plug-in groove, the air inlet end of the corrugated pipe 104 is fixed. At this time, when the box door is closed, the air inlet end of the corrugated pipe 104 corresponds to the air inlet position, so that external cold air can enter.

[0050] Optionally, in some embodiments, the air intake assembly 1 further includes a slide rail 103, which is arranged perpendicular to the side wall of the substation. The movable part 102 is slidably installed on the slide rail 103. That is, the movable part 102 is slidably installed on the slide rail 103. At this time, the corrugated pipe 104 and the box door are not connected. When the maintenance worker opens the box door, he can push the movable part 102 to slide on the slide rail 103 to adjust its position so that it is close to the side wall of the substation, so as to facilitate the maintenance work of the maintenance worker. After the maintenance is completed, the air intake end of the corrugated pipe 104 is moved back to its original position. At this time, the air intake end of the corrugated pipe 104 corresponds to the position of the air inlet.

[0051] In the above embodiment, in order to further improve the connection and sealing between the bellows 104 and the air inlet, only magnets are provided at the bellows 104 and the air inlet. When the bellows 104 moves to the corresponding position, after the door is closed, the magnets on the air inlet and the bellows 104 attract each other, thereby realizing the connection between the bellows 104 and the air inlet and improving its sealing performance.

[0052] Please refer to Figure 1 In some embodiments, the air inlet channel 105 is provided with a booster fan 106 for increasing the air pressure in the booster chamber 2. That is, by increasing the air pressure in the booster chamber 2 through the booster fan 106, it is beneficial to increase the airflow speed at the opening 201 and further improve the cooling efficiency.

[0053] Optionally, in some embodiments, the booster fan 106 may be an industrial booster fan, specifically, an axial flow fan, a centrifugal fan, or a high-pressure centrifugal fan.

[0054] Please refer to Figure 1 In some embodiments, a flow guide 3 is provided at the opening 201 of the pressurization chamber 2. The flow guide 3 is used to guide the airflow at the opening 201 to flow to a preset position, thereby enhancing the cooling effect on the transformer in the substation.

[0055] Optionally, in some embodiments, the flow guide 3 is a mesh structure. Specifically, the opening 201 is circular, and the flow guide 3 is composed of several inclined guide plates. The guide plates are arranged at equal intervals. When air passes through, it is guided by the guide plates and flows in a preset direction.

[0056] In the above embodiment, the guide member 3 is rotatably installed in the pressurization chamber 2. That is, when the air enters the guide member 3, the guide member 3 will rotate under the push of the airflow, thereby continuously adjusting the direction of airflow and increasing the range of airflow, thereby increasing the coverage of the transformer and improving the cooling efficiency of the transformer.

[0057] In the above embodiment, the guide member 3 is provided with a driving member for starting the rotation of the guide member 3. The driving member can be a motor to drive the guide member 3 to rotate.

[0058] In other words, the key point of this utility model is: a pressure-boosting chamber 2 is provided at one end of the air inlet channel 105, and the pressure-boosting chamber 2 has at least one opening 201. The area of ​​the opening 201 is smaller than the cross-sectional area of ​​the air inlet channel 105. The pressure-boosting chamber 2 is used to increase the pressure inside the chamber, thereby increasing the wind speed at the outlet. The air inlet is located in the substation and is used to connect the inside of the substation with the outside. The end of the air inlet channel 105 away from the pressure-boosting chamber 2 is connected to the air inlet. An air intake fan 101 is provided at the air inlet. That is, through the air intake fan 101 at the air inlet, cold air from the outside is drawn into the air inlet channel 105 and pressurized in the pressure-boosting chamber 2, so that the cold air can flow out from the opening 201 of the pressure-boosting chamber 2. The increased air velocity at position 01, with its high-speed airflow passing over the coil surface, results in a smaller fluid boundary layer and rapid heat exchange, significantly improving the coil's heat dissipation capacity. This, in turn, enhances the heat dissipation efficiency and effectiveness of the transformer within the substation, improving its operational stability. Simultaneously, the exhaust vent is located within the substation, connecting the interior to the outside. The high-temperature air, after heat exchange, is quickly expelled from the substation through the exhaust vent, further improving the heat dissipation efficiency within the substation. Additionally, external cold air is drawn out of the transformer coil within the substation through the air inlet channel 105, allowing the cold air to cool the transformer coil first, further enhancing the cooling efficiency of the transformer coil.

[0059] In addition to the substation heat dissipation mechanism disclosed in the above embodiments, this utility model also provides a prefabricated substation including the above-mentioned substation heat dissipation mechanism. For the structure of other parts of the prefabricated substation, please refer to the prior art, which will not be repeated here.

[0060] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on the differences from other embodiments. The same or similar parts between the various embodiments can be referred to each other.

[0061] The above provides a detailed description of a substation heat dissipation mechanism and a prefabricated substation provided by this utility model. Specific examples have been used to illustrate the principles and implementation methods of this utility model. The descriptions of the embodiments above are only for the purpose of helping to understand the method and core ideas of this utility model. It should be noted that those skilled in the art can make several improvements and modifications to this utility model without departing from the principles of this utility model, and these improvements and modifications also fall within the protection scope of this utility model.

Claims

1. A substation heat dissipation mechanism for prefabricated substations, characterized in that, include: An air intake assembly (1) includes at least one air intake channel (105) installed in the substation. One end of the air intake channel (105) is provided with a pressurization chamber (2). The pressurization chamber (2) is provided with at least one opening (201). The area of ​​the opening (201) is smaller than the cross-sectional area of ​​the air intake channel (105). At least one air inlet is provided in the substation and is used to connect the interior of the substation with the outside. The end of the air inlet channel (105) away from the pressurization chamber (2) is connected to the air inlet. An air inlet fan (101) is provided at the air inlet. At least one exhaust vent is provided in the substation and is used to connect the interior of the substation to the outside.

2. The substation heat dissipation mechanism according to claim 1, characterized in that, Both the air inlet and the air outlet are located at the substation box door, and the air outlet is equipped with an exhaust fan (4).

3. The substation heat dissipation mechanism according to claim 1, characterized in that, The air intake duct (105) is arranged along the side wall of the substation.

4. The substation heat dissipation mechanism according to claim 3, characterized in that, A corrugated pipe (104) is provided between the air inlet channel (105) and the air inlet.

5. The substation heat dissipation mechanism according to claim 4, characterized in that, The air intake assembly (1) also includes: A movable component (102) is connected to one end of the bellows (104) away from the air inlet channel (105) and is used to control the movement of the bellows (104) within the substation.

6. The substation heat dissipation mechanism according to claim 5, characterized in that, The air intake assembly (1) also includes: The slide rail (103) is arranged perpendicular to the side wall of the substation, and the moving part (102) is slidably installed on the slide rail (103).

7. The substation heat dissipation mechanism according to any one of claims 1-6, characterized in that, The air inlet channel (105) is equipped with a booster fan (106) for increasing the air pressure in the booster chamber (2).

8. The substation heat dissipation mechanism according to claim 7, characterized in that, The pressurization chamber (2) is provided with a flow guide (3) at the opening (201).

9. The substation heat dissipation mechanism according to claim 8, characterized in that, The flow guide (3) has a mesh structure and is rotatably mounted on the pressurization chamber (2).

10. A prefabricated substation, characterized in that, Includes the substation heat dissipation mechanism as described in any one of claims 1-9.

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