Underground transformer heat dissipation device
By installing downward and upward ventilation fans and heat conducting plates in the underground transformer, an air circulation channel is formed, which solves the problem of poor heat dissipation effect of the underground transformer, achieves efficient heat dissipation effect, and reduces the risk of transformer damage.
Patent Information
- Application Number
- CN202422260455.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-14
- Publication Date
- 2025-09-05
- Estimated Expiration
- 2034-09-14
AI Technical Summary
Due to the inconvenience of air circulation, the underground transformer has poor natural heat dissipation effect, the temperature rises, and affects the normal operation of the transformer. The traditional single-group exhaust fan has poor heat dissipation effect and can easily cause damage to the transformer.
A buried transformer heat dissipation device is designed. A first ventilation fan blowing downward and a second ventilation fan blowing upward are used to form an air circulation channel. Heat conduction sheets and heat dissipation fins are combined to accelerate heat dissipation through the heat dissipation channel, and multiple groups of ventilation fans are used to improve heat dissipation efficiency.
It effectively speeds up the discharge of heat inside the transformer room, reduces the temperature of the transformer body, reduces the possibility of transformer damage, and improves the heat dissipation effect.
Smart Images
Figure CN223308839U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of underground transformers, in particular to a heat dissipation device for underground transformers. Background Art
[0002] Installed in basements or cellars, underground transformers promote green electricity and optimize the urban environment. They are suitable for lighting and power systems in streets, highways, bridges, tunnels, parking lots, urban environments, airports, ports, tourist attractions, and more, and are particularly well-suited for densely populated urban centers. Underground transformers consist of an above-ground section and an underground section. The main body of the transformer is installed in a concrete pit, eliminating the need for surface space. The cover of the underground transformer houses the high-voltage well and low-voltage terminals, a high-voltage load switch and backup fuses, a pluggable lightning arrester, a pressure relief valve, a vacuum pressure gauge, a temperature control system, and an oil level indicator. These components can be observed and operated from above ground. The stainless steel oil tank features a fully sealed construction and welded enclosure to minimize the sealed area, ensuring long-term, safe operation in the challenging underground environment.
[0003] Underground transformers are located below the surface, and air circulation in the pit is difficult, resulting in poor natural heat dissipation. This causes the temperature in the pit to rise, affecting the normal operation of the transformer. Traditionally, when dissipating heat from underground transformers, only one set of exhaust fans is installed to solve the heat dissipation problem of underground distribution transformers. However, due to the influence of ambient temperature and the inconvenience of ventilation, the heat dissipation effect of only one set of exhaust fans is poor, which can easily lead to excessive transformer temperature, thereby increasing the temperature of the transformer room. This cycle can easily lead to damage to the transformer. Therefore, a heat dissipation device for underground transformers has been designed. Utility Model Content
[0004] In view of the problems mentioned in the background technology, the purpose of the present invention is to provide an underground transformer heat dissipation device to solve the problems mentioned in the background technology.
[0005] The above technical objectives of the present invention are achieved through the following technical solutions:
[0006] A buried transformer heat dissipation device, comprising a distribution box body arranged inside a pit, a transformer chamber provided at the bottom of the distribution box body, a transformer body provided inside the transformer chamber, an air inlet provided on one side of the distribution box body located above the pit, an air inlet channel provided between one side of the air inlet and the transformer chamber, a first ventilation fan for blowing air downwardly installed inside the air inlet channel, an air outlet provided on the other side of the distribution box body located above the pit, an air outlet channel provided between one side of the air outlet and the transformer chamber, and a second ventilation fan for blowing air upwardly installed inside the air outlet channel;
[0007] A heat dissipation fin is provided on the outside of the transformer body, and a heat conducting plate is fixedly connected to the heat dissipation fin via a connecting component. The other end of the heat conducting plate is fixedly connected to a mounting plate, and the mounting plate is fixedly connected to the inner wall of the distribution box via a fixing component, and a heat dissipation channel is opened between the air inlet and the air outlet.
[0008] Preferably, a first dustproof net is detachably mounted on the outer side of the air inlet, and a second dustproof net is detachably mounted on the outer side of the air outlet.
[0009] Preferably, the heat conducting sheets are provided in a plurality of groups, the bottom ends of the heat conducting sheets in the plurality of groups are respectively inserted into the gaps in the middle of the heat dissipating fins, and the heat conducting sheets in the plurality of groups are in contact with the outer surfaces of the heat dissipating fins.
[0010] Preferably, the connecting assembly includes a positioning plate and two sets of fastening screws, the positioning plate is fixedly arranged on the outer surface of the heat conducting plate, and the positioning plate is fixedly connected to the outer wall of the transformer body through the two sets of fastening screws.
[0011] Preferably, a third ventilation fan and a fourth ventilation fan blowing in the same direction are fixedly installed at both ends of the heat dissipation channel.
[0012] Preferably, a communication groove is provided between the heat dissipation channel and the top of the transformer chamber, and the top of the communication groove is configured as a conical structure.
[0013] Preferably, the fixing assembly includes a fixing block and a fixing frame, the fixing block is fixedly arranged on the top wall of the heat dissipation channel, the fixing frame is fixedly arranged on the top of the mounting plate, and the fixing frame is fixedly connected to the fixing block by fastening bolts and nuts.
[0014] In summary, the present invention has the following beneficial effects:
[0015] First, the utility model provides a first ventilation fan that blows air downward and a second ventilation fan that blows air upward, so that an air circulation channel is formed among the air inlet, the air inlet channel, the transformer chamber, the air outlet channel and the air outlet, thereby accelerating the discharge of heat inside the transformer chamber and facilitating effective cooling of the transformer chamber;
[0016] Secondly, the present invention can conduct heat from the heat sink by providing a heat conducting sheet, and through the heat dissipation channel, an air circulation channel can be formed between the heat conducting sheet and the air inlet and outlet, thereby accelerating the heat dissipation of the heat conducting sheet, thereby further dissipating heat for the transformer body and reducing the possibility of damage to the transformer body. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] Figure 1It is a structural diagram of the utility model;
[0018] Figure 2 This utility model Figure 1 Enlarged view of point A in the middle;
[0019] Figure 3 This utility model Figure 1 Enlarged view of point B in the middle.
[0020] Figure numerals: 1. pit; 2. distribution box; 3. transformer room; 4. transformer body; 5. air inlet; 6. air inlet duct; 7. first ventilation fan; 8. air outlet; 9. air outlet duct; 10. second ventilation fan; 11. heat dissipation fin; 12. connecting assembly; 121. positioning piece; 122. fastening screw; 13. heat conducting sheet; 14. mounting plate; 15. fixing assembly; 151. fixing block; 152. fixing frame; 153. fastening bolt; 154. nut; 16. heat dissipation duct; 17. first dustproof net; 18. second dustproof net; 19. third ventilation fan; 20. fourth ventilation fan; 21. connecting groove. DETAILED DESCRIPTION
[0021] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.
[0022] Example 1
[0023] refer to Figure 1-3 , a buried transformer heat dissipation device, comprising a distribution box body 2 arranged inside a pit 1, a transformer chamber 3 being arranged at the bottom of the distribution box body 2, a transformer body 4 being arranged inside the transformer chamber 3, an air inlet 5 being provided on one side of the distribution box body 2 located above the pit 1, an air inlet channel 6 being provided between one side of the air inlet 5 and the transformer chamber 3, a first ventilation fan 7 for blowing air downward being installed inside the air inlet channel 6, an air outlet 8 being provided on the other side of the distribution box body 2 located above the pit 1, an air outlet channel 9 being provided between one side of the air outlet 8 and the transformer chamber 3, a second ventilation fan 10 for blowing air upward being installed inside the air outlet channel 9;
[0024] A heat dissipation fin 11 is provided on the outside of the transformer body 4, and a heat conducting plate 13 is fixedly connected to the heat dissipation fin 11 through a connecting component 12. The other end of the heat conducting plate 13 is fixedly connected to a mounting plate 14, and the mounting plate 14 is fixedly connected to the inner wall of the distribution box 2 through a fixing component 15, and a heat dissipation channel 16 is opened between the air inlet 5 and the air outlet 8.
[0025] refer to Figure 1 , in order to facilitate filtering dust and impurities; the outer side of the air inlet 5 is detachably mounted with a first dust net 17, and the outer side of the air outlet 8 is detachably mounted with a second dust net 18.
[0026] refer to Figure 1-3 , the heat conducting sheets 13 are provided in several groups, and the bottom ends of several groups of the heat conducting sheets 13 are respectively inserted into the gaps in the middle of the heat dissipating fins 11, and several groups of the heat conducting sheets 13 are in contact with the outer surfaces of the heat dissipating fins 11; by providing several groups of heat conducting sheets 13, and inserting the heat conducting sheets 13 into the gaps in the middle of the heat dissipating fins 11, and contacting the surfaces of the heat dissipating fins 11, the heat in the heat dissipating fins 11 can be transferred to the heat conducting sheets 13, thereby facilitating the heat dissipation of the heat dissipating fins 11 and accelerating the discharge of heat.
[0027] refer to Figure 1 and Figure 2 In order to facilitate the disassembly and assembly of the heat conducting plate 13 and the transformer body 4; the connecting component 12 includes a positioning plate 121 and two sets of fastening screws 122, the positioning plate 121 is fixedly arranged on the outer surface of the heat conducting plate 13, and the positioning plate 121 is fixedly connected to the outer wall of the transformer body 4 through the two sets of fastening screws 122.
[0028] refer to Figure 1 In order to facilitate air flow in the heat dissipation channel 16 and dissipate heat from the heat conducting sheet 13, thereby further improving the overall heat dissipation effect, a third ventilation fan 19 and a fourth ventilation fan 20 blowing in the same direction are fixedly installed at both ends of the heat dissipation channel 16.
[0029] refer to Figure 1 In order to increase the ventilation effect and accelerate the heat dissipation of the heat conducting plate 13, a connecting groove 21 is opened between the heat dissipation channel 16 and the top of the transformer chamber 3, and the top of the connecting groove 21 is set to a conical structure.
[0030] refer to Figure 1 and Figure 3In order to facilitate the disassembly and assembly of the mounting plate 14, thereby facilitating the installation and fixation of the heat conducting sheet 13; the fixing assembly 15 includes a fixing block 151 and a fixing frame 152. The fixing block 151 is fixedly arranged on the top wall of the heat dissipation channel 16, and the fixing frame 152 is fixedly arranged on the top of the mounting plate 14. The fixing frame 152 is fixedly connected to the fixing block 151 by fastening bolts 153 and nuts 154.
[0031] Principle and advantages of use:
[0032] The utility model provides a first ventilation fan 7 for blowing downward and a second ventilation fan 10 for blowing upward, so that an air circulation channel is formed among the air inlet 5, the air inlet channel 6, the transformer chamber 3, the air outlet channel 9 and the air outlet 8, thereby accelerating the discharge of heat inside the transformer chamber 3 and facilitating effective cooling of the transformer chamber 3; by providing a thermal conductive sheet 13, the heat in the heat dissipation fins 11 can be conducted out, and through the opened heat dissipation channel 16, an air circulation channel can also be formed between the heat dissipation fin 11 and the air inlet 5 and the air outlet 8. At the same time, the third ventilation fan 19 and the fourth ventilation fan 20 are used to blow air, which can accelerate the air flow rate inside the heat dissipation channel 16, thereby accelerating the heat dissipation of the thermal conductive sheet 13, thereby further performing heat dissipation treatment on the transformer body 4, and reducing the possibility of damage to the transformer body 4.
[0033] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.
Claims
1. An underground transformer heat dissipation device, comprising a distribution box (2) arranged inside a pit (1), characterized in that: A transformer chamber (3) is provided at the bottom of the distribution box (2), a transformer body (4) is provided inside the transformer chamber (3), an air inlet (5) is provided on one side of the distribution box (2) located above the pit (1), an air inlet channel (6) is provided between one side of the air inlet (5) and the transformer chamber (3), a first ventilation fan (7) for blowing air downwards is installed inside the air inlet channel (6), an air outlet (8) is provided on the other side of the distribution box (2) located above the pit (1), an air outlet channel (9) is provided between one side of the air outlet (8) and the transformer chamber (3), a second ventilation fan (10) for blowing air upwards is installed inside the air outlet channel (9); A heat dissipation fin (11) is provided on the outside of the transformer body (4), a heat conducting plate (13) is fixedly connected to the heat dissipation fin (11) via a connecting assembly (12), a mounting plate (14) is fixedly connected to the other end of the heat conducting plate (13), the mounting plate (14) is fixedly connected to the inner wall of the distribution box (2) via a fixing assembly (15), and a heat dissipation channel (16) is provided between the air inlet (5) and the air outlet (8).
2. The underground transformer heat dissipation device according to claim 1, characterized in that: A first dustproof net (17) is detachably mounted on the outer side of the air inlet (5), and a second dustproof net (18) is detachably mounted on the outer side of the air outlet (8).
3. The underground transformer heat dissipation device according to claim 1, characterized in that: The heat conducting sheets (13) are provided in a plurality of groups, the bottom ends of the heat conducting sheets (13) in the plurality of groups are respectively inserted into the gaps in the middle of the heat dissipation fins (11), and the heat conducting sheets (13) in the plurality of groups are in contact with the outer surfaces of the heat dissipation fins (11).
4. The underground transformer heat dissipation device according to claim 1, characterized in that: The connecting assembly (12) comprises a positioning piece (121) and two sets of fastening screws (122); the positioning piece (121) is fixedly arranged on the outer surface of the heat conducting piece (13); and the positioning piece (121) is fixedly connected to the outer wall of the transformer body (4) via the two sets of fastening screws (122).
5. The underground transformer heat dissipation device according to claim 1, characterized in that: A third ventilation fan (19) and a fourth ventilation fan (20) blowing air in the same direction are fixedly installed at both ends of the heat dissipation channel (16).
6. The underground transformer heat dissipation device according to claim 5, characterized in that: A communication groove (21) is provided between the heat dissipation channel (16) and the top of the transformer chamber (3), and the top of the communication groove (21) is configured as a conical structure.
7. The underground transformer heat dissipation device according to claim 1, characterized in that: The fixing assembly (15) comprises a fixing block (151) and a fixing frame (152); the fixing block (151) is fixedly arranged on the top wall of the heat dissipation channel (16); the fixing frame (152) is fixedly arranged on the top of the mounting plate (14); the fixing frame (152) is fixedly connected to the fixing block (151) by fastening bolts (153) and nuts (154).