Transformer heat dissipation assembly with electro-hydraulic integrated wiring terminal structure

Abstract

The invention discloses a transformer heat dissipation assembly with a liquid-electricity integrated wiring terminal structure, and particularly relates to the technical field of transformers. The transformer heat dissipation assembly with the liquid-electricity integrated wiring terminal structure comprises a transformer box body, a plurality of wiring terminals, a heat dissipation pipe, a circulating pump and a liquid storage box, the plurality of wiring terminals are fixedly installed on the transformer box body, the heat dissipation pipe and the circulating pump are installed on one side of the transformer box body, and the liquid storage box is installed on the other side of the transformer box body. The circulating pump is communicated with the heat dissipation pipe, the exterior of the wiring terminal is of a ceramic structure, a hollow metal column is arranged in the wiring terminal, a plurality of pipeline connectors are installed on the metal column, and the pipeline connectors are all communicated with the interior of the metal column. According to the transformer heat dissipation assembly with the liquid-electricity integrated wiring terminal structure, the wiring terminal metal column can be directly cooled, the oxidation risk is reduced, and contact resistance temperature rise and energy loss are reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of transformers, and in particular to a transformer heat dissipation component with a liquid-electric integrated terminal structure. Background Art

[0002] High-frequency transformers are widely used in various fields of power conversion. High-frequency transformers generate a significant amount of heat during operation, necessitating a heat dissipation design. Liquid cooling is a common approach, whereby coolant is injected into the transformer windings, dissipating the heat generated by the windings and raising the liquid temperature. Furthermore, after the heated, high-temperature coolant exits the transformer, it passes through a heat sink, dissipating the heat and cooling the water, before circulating back into the transformer.

[0003] However, since the terminal blocks of traditional transformers are exposed to the outside of the transformer box, they rely solely on the surrounding air for cooling, resulting in low heat dissipation efficiency. Prolonged high temperatures at the terminals accelerate the oxidation of metal terminals (such as copper and aluminum), forming an oxide layer (such as verdigris and aluminum rust) on the surface, increasing contact resistance and causing more severe heating. Furthermore, increased contact resistance causes energy loss and reduces transformer efficiency.

[0004] Therefore, it is necessary to provide a transformer heat dissipation assembly with a liquid-electric integrated terminal structure to solve the above technical problems. Summary of the Invention

[0005] In view of the above situation, in order to overcome the defects of the prior art, the present invention provides a transformer heat dissipation assembly with a liquid-electric integrated terminal structure that can directly cool the terminal metal column, reduce the risk of oxidation, and reduce contact resistance temperature rise and energy loss.

[0006] To achieve the above object, the technical solution adopted by the present invention is as follows:

[0007] The transformer heat dissipation component with a liquid-electric integrated terminal structure includes: a transformer box, multiple terminals, a heat dissipation pipe, a circulation pump and a liquid storage tank.

[0008] The plurality of connection terminals are fixedly mounted on the transformer box, the heat dissipation pipe and the circulation pump are mounted on one side of the transformer box, and the circulation pump is connected to the heat dissipation pipe.

[0009] The terminal block has a ceramic structure on the outside and a hollow metal column on the inside. A plurality of pipe connectors are installed on the metal column, and the plurality of pipe connectors are connected to the inside of the metal column.

[0010] When the terminal block is mounted on the transformer box, a portion of the pipe connector is located inside the transformer box, and the other portion is located outside. The pipe connector located outside is connected to a pipe, and the pipe is connected to the circulating pump or the liquid storage tank.

[0011] One part of the wiring terminals serves as a liquid inlet channel, connected to a liquid outlet pipe, and the liquid outlet pipe is connected to the circulation pump; the other part of the wiring terminals serves as a liquid outlet channel, connected to a liquid inlet pipe, and the liquid inlet pipe is connected to the liquid storage tank.

[0012] Preferably, a vertically arranged partition is fixed inside the metal column, and the partition divides the interior of the metal column into two independent spaces. The two independent spaces serve as a liquid inlet channel and a liquid return channel respectively, and two pipe connectors are fixed in each of the two independent spaces.

[0013] Preferably, in a dry-type transformer, the wiring terminals located inside the transformer box are connected to the cooling pipes inside the dry-type transformer; in a wet-type transformer, the wiring terminals located inside the transformer box are connected to at least one extension tube, and the bottom end of the extension tube is close to the bottom of the transformer box.

[0014] Preferably, a plurality of cooling fans fixed to the transformer box are provided on one side of the heat dissipation pipe.

[0015] Preferably, a plurality of support columns are fixedly mounted on the transformer box, and an insulating plate is fixed to the plurality of support columns by bolts. The insulating plate is fixed to a plurality of wiring terminals, and a plurality of ceramic seats are fixed on the insulating plate, and the ceramic seats are used to fix the liquid outlet pipe and the liquid inlet pipe.

[0016] Preferably, a plurality of support columns are fixedly installed on the transformer box body, and a protective box is fixed to the plurality of support columns by bolts. The protective box is fixed to a plurality of wiring terminals. The protective box is made of ceramic material, and a plurality of ceramic seats are fixed on the protective box. The ceramic seats are used to fix the liquid outlet pipe and the liquid inlet pipe. A sealing cover plate is installed on one side of the protective box by multiple screws.

[0017] Preferably, a plurality of wiring nozzles are installed on the side of the protective box away from the sealing cover plate, and the wiring nozzle includes a fixed port fixed on the protective box, an internal thread and a rubber ring are provided inside the fixed port, a movable tube is threadedly installed on the fixed port, and two notches are symmetrically provided on the movable tube, and a first pressure block and a second pressure block are movably provided in the two notches respectively, and two screws are movably provided on the first pressure block, and both screws pass through the movable tube and are threadedly connected to the second pressure block.

[0018] Preferably, it also includes a controller and a temperature sensor, the temperature sensor is located inside the transformer box and is electrically connected to the controller, and the controller is electrically connected to the circulation pump and the cooling fan for controlling the power of the circulation pump and the cooling fan.

[0019] Preferably, the liquid outlet pipe and the liquid inlet pipe are both insulating pipes.

[0020] Preferably, the liquid outlet pipe and the liquid inlet pipe are ceramic tubes.

[0021] Compared with the prior art, the present invention has the following beneficial effects:

[0022] (1) The present invention integrates the coolant circulation and the conductive structure to directly cool the metal post of the terminal, reducing the risk of oxidation, contact resistance temperature rise and energy loss;

[0023] (2) The partition cavity design of the present invention allows the coexistence of hot and cold liquid flows in the same terminal, thereby improving the heat exchange efficiency; the cooling fan accelerates the cooling of the heat pipe, thereby improving the heat dissipation efficiency;

[0024] (3) The ceramic insulating shell and insulating tube of the present invention provide double protection to prevent leakage; the protective box, sealing cover and waterproof wiring nozzle ensure outdoor rain and moisture protection, thereby improving electrical safety;

[0025] (4) The present invention dynamically adjusts the power of the pump and fan according to the temperature inside the transformer box, reducing power consumption at low loads, and taking into account both heat dissipation and energy saving. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 A schematic diagram of an embodiment of a transformer heat dissipation assembly with a liquid-electric integrated terminal structure provided by the present invention;

[0027] Figure 2 for Figure 1 A schematic cross-sectional view of a transformer heat dissipation assembly having a liquid-electric integrated terminal structure is shown;

[0028] Figure 3 for Figure 1 A partial structural diagram of a transformer heat dissipation assembly with a liquid-electric integrated terminal structure is shown;

[0029] Figure 4 It is a structural diagram of the terminal block;

[0030] Figure 5 is a structural diagram of a metal column;

[0031] Figure 6 Schematic diagram of the cross-sectional structure of a metal column;

[0032] Figure 7A schematic diagram of another embodiment of a transformer heat dissipation assembly with a liquid-electric integrated terminal structure provided by the present invention;

[0033] Figure 8 for Figure 7 A partial structural diagram of a transformer heat dissipation assembly with a liquid-electric integrated terminal structure is shown;

[0034] Figure 9 for Figure 8 A schematic diagram of a transformer heat dissipation assembly with a liquid-electric integrated terminal structure from another perspective is shown;

[0035] Figure 10 for Figure 8 The exploded schematic diagram of the terminal block structure in the transformer heat dissipation assembly with the liquid-electric integrated terminal structure is shown;

[0036] Figure 11 for Figure 8 The figure shows a schematic diagram of the exploded structure of the terminal block in a transformer heat dissipation assembly with a liquid-electric integrated terminal structure.

[0037] Among them, the names corresponding to the figure marks are: 1. Transformer box; 2. Terminal block; 201. Metal column; 202. Partition; 203. Independent space; 204. Pipe connector; 3. Heat pipe; 4. Circulation pump; 5. Liquid outlet pipe; 6. Liquid inlet pipe; 7. Extension pipe; 8. Liquid storage tank; 9. Cooling fan; 10. Ceramic seat; 11. Support column; 12. Insulation board; 13. Protective box; 14. Sealing cover; 15. Wiring nozzle; 16. Fixed port; 17. Rubber ring; 18. Moving tube; 19. Notch; 20. First pressure block; 21. Second pressure block; 22. Screw. DETAILED DESCRIPTION

[0038] The present invention will be further described below with reference to the accompanying drawings and examples. The embodiments of the present invention include but are not limited to the following examples.

[0039] Example 1

[0040] like Figure 1-6As shown, the transformer heat dissipation assembly with a liquid-electric integrated terminal structure provided by the present invention includes: a transformer box 1, multiple terminal blocks 2, a heat dissipation pipe 3, a circulation pump 4 and a liquid storage tank 8, multiple terminal blocks 2 are fixedly installed on the transformer box 1, the heat dissipation pipe 3 and the circulation pump 4 are installed on one side of the transformer box 1, the circulation pump 4 is connected to the heat dissipation pipe 3, the exterior of the terminal block 2 is a ceramic structure, and a metal column 201 for conducting electricity is provided inside it, the interior of the metal column 201 is hollow, and multiple pipe connectors 204 are installed on the metal column 201, and the multiple connectors 204 are connected to the interior of the metal column 201. When the terminal block 2 is installed on the transformer box 1, , part of the pipe connector 204 is located inside the transformer box 1, and the other part is located outside. The pipe connector 204 located outside the transformer box 1 is connected to a pipe, and the pipe is connected to the circulating pump 4 or the liquid storage tank 8. When a pipe connector 204 is provided at each end of the terminal 2, the terminal 2 can independently serve as an inlet channel or an outlet channel for the coolant inside the transformer box 1. Since the transformer has multiple terminals, part of them serves as an inlet channel and part of them serves as an outlet channel. The terminal 2 serving as the inlet channel is connected to a liquid outlet pipe 5, and the liquid outlet pipe 5 is connected to the circulating pump 4. The terminal 2 serving as the outlet channel is connected to a liquid inlet pipe 6, and the liquid inlet pipe 6 is connected to the liquid storage tank 8. Since transformers are divided into dry-type transformers and wet-type transformers, in the dry-type transformer, the terminal 2 located inside the transformer box 1 is connected to the cooling pipe inside the dry-type transformer, so that coolant flows inside the cooling pipe to cool the inside of the transformer; in the wet transformer, at least one extension tube 7 is provided on the terminal 2 located in the transformer box 1, and the bottom end of the extension tube 7 is close to the bottom of the transformer box 1, so that it is convenient to extract the coolant in the submerged transformer box 1, thereby circulating the coolant and cooling the inside of the transformer. In this embodiment, the coolant passes through the terminal whether it serves as a liquid inlet channel or a liquid outlet channel, taking away the heat generated by the terminal itself, reducing its temperature, and reducing the probability of an oxide layer (such as verdigris or aluminum rust) forming on the surface, thereby avoiding an increase in resistance and causing serious heating, while avoiding a large amount of energy loss and ensuring transformer efficiency.

[0041] Example 2

[0042] like Figure 5-6As shown, a vertical partition 202 is fixed inside the metal column 201, and the partition 202 divides the inside of the metal column 201 into two independent spaces 203. The two independent spaces 203 serve as a liquid inlet channel and a liquid return channel respectively, and are fixed with two pipe connectors 204. A terminal 2 is located outside the transformer box 1. The two pipe connectors 204 are connected to the liquid outlet pipe 5 and the liquid inlet pipe 6 respectively. One end of the two pipe connectors inside the transformer box 1 is connected to the cooling pipe (dry-type transformer) or at least one extension pipe 7 (wet transformer). When the circulating pump 4 is started, it will cool the coolant inside the transformer box 1. The coolant is transported to the heat pipe 3 through an independent space 203 in the terminal block 2 and the liquid outlet pipe 5 for centralized heat dissipation. The coolant after heat dissipation enters the liquid storage tank 8 connected to the heat pipe 3, and the coolant in the liquid storage tank 8 enters the terminal block 2 through the liquid inlet pipe 6, and enters the transformer box 1 through another independent space 203 in the terminal block 2 to form a circulation. During the coolant circulation process, colder and hotter coolants flow in the terminal block 2 at the same time. The colder and hotter coolants flow through the same terminal block 2, which makes the overall coolant temperature lower than the higher coolant temperature, thereby being more conducive to heat dissipation of the terminal block 2.

[0043] Example 3

[0044] like Figure 3 As shown, a plurality of cooling fans 9 fixed to the transformer box 1 are provided on one side of the heat pipe 3. When the plurality of cooling fans 9 are started, cold air is blown toward the heat pipe 3, so that the heat pipe 3 can be cooled more quickly.

[0045] Example 4

[0046] like Figure 1 As shown, a plurality of support columns 11 are fixedly mounted on the transformer box 1, and an insulating plate 12 is fixed to the plurality of support columns 11 by bolts. The insulating plate 12 is fixed to a plurality of terminal blocks 2. A plurality of ceramic seats 10 are fixed on the insulating plate 12. The ceramic seats 10 are used to fix the liquid outlet pipe 5 and the liquid inlet pipe 6. The liquid outlet pipe 5 and the liquid inlet pipe 6 are both insulating tubes, and ceramic tubes can be used. Since ceramic tubes are heavy and brittle, ceramic seats 10 are used for support, which can provide certain protection for the liquid outlet pipe 5 and the liquid inlet pipe 6.

[0047] Example 5

[0048] like Figure 7-10As shown, when the device is used outdoors, water will adhere to the liquid outlet pipe 5 and the liquid inlet pipe 6 due to rainy days, which is not conducive to electrical safety and has serious safety hazards. For this reason, in this embodiment, a protective box 13 is used to replace the insulating plate 12, that is, multiple support columns 11 are fixed with a protective box 13 by bolts, and the protective box 13 is fixed to multiple wiring terminals 2. The protective box 13 is made of ceramic material, and multiple ceramic seats 10 are fixed on the protective box 13. The ceramic seats 10 are used to fix the liquid outlet pipe 5 and the liquid inlet pipe 6. A sealing cover plate 14 is also installed on one side of the protective box 13 by multiple screws. The sealing cover plate 14 is used to seal the protective box 13. At the same time, the setting of the sealing cover plate 14 also facilitates personnel to install and connect pipes and cables.

[0049] Furthermore, a plurality of wiring nozzles 15 are installed on a side of the protection box 13 away from the sealing cover plate 14 , through which the cables enter the protection box 13 , and the wiring nozzles 15 are also used to fix the cables.

[0050] Furthermore, the wiring nozzle 15 includes a fixed port 16 fixed on the protective box 13, the fixed port 16 is communicated with the interior of the protective box 13, and a portion of the interior is provided with an internal thread, a rubber ring 17 is provided in the fixed port 16, the outer ring of the rubber ring 17 is in close contact with the non-threaded section of the fixed port 16, a movable tube 18 is threadedly installed on the fixed port 16, the movable tube 18 is provided with an external thread, the external thread is adapted to the internal thread on the fixed port 16, and two notches 19 are symmetrically provided on the movable tube 18, and a first pressure Block 20 and second pressing block 21, two screws 22 are movably provided on the first pressing block 20, both of the screws 22 pass through the movable tube 18 and are threadedly connected to the second pressing block 21. When installing the cable, the cable is passed through the movable tube 18, and at the same time through the rubber ring 17 (the cable here should have an outer sheath) and the fixed port 16 into the protective box 13. It should be noted that the outer diameter of the cable should be adapted to the inner diameter of the rubber ring 17. The rubber ring 17 here can be replaced according to actual conditions. After the cable enters the protective box 13, the cable can be clamped by the first pressing block 20 and the second pressing block 21, thereby fixing the cable.

[0051] Example 6

[0052] It also includes a controller (which can be an MCU or a PLC) and a temperature sensor. The temperature sensor is located inside the transformer box 1 and is used to monitor the temperature inside the transformer in real time. The temperature sensor is electrically connected to the controller, and the controller is electrically connected to the circulation pump 4 and the cooling fan 9. The controller is used to control the power of the circulation pump 4 and the cooling fan 9. The circulation pump 4 is a multi-power circulation pump, and the cooling fan 9 is a multi-power fan. When the temperature sensor detects that the temperature inside the transformer box 1 rises, it transmits a signal to the controller. The controller processes the signal and sends instructions to the circulation pump 4 and the cooling fan 9 to increase the power of the circulation pump 4 and the cooling fan, thereby accelerating the flow rate of the coolant and the heat dissipation effect of the heat pipe 3. With the cooperation of the two, the heat dissipation effect of the transformer is improved. When the temperature inside the transformer box 1 is low, the circulation pump 4 and the cooling fan 9 are both in low-power operation, thereby achieving the purpose of saving electricity.

[0053] Working Principle: During operation, circulating pump 4 drives coolant from reservoir 8 through inlet pipe 6 to terminal block 2, which serves as the inlet channel. After entering transformer housing 1, the coolant absorbs heat through internal cooling pipes in dry-type transformers or extracts oil from the bottom of a wet-type transformer through extension pipe 7. The high-temperature coolant then flows through terminal block 2 and outlet pipe 5 in the outlet channel to heat pipe 3. Cooling fan 9 forces the coolant back to reservoir 8, forming a closed-loop circuit. As the coolant flows through terminal block 2, it directly removes the heat generated by electrical conduction.

Claims

1. A transformer heat dissipation assembly with a liquid-electric integrated terminal structure, characterized in that: include: A transformer box (1), a plurality of connection terminals (2), a heat dissipation pipe (3), a circulation pump (4) and a liquid storage tank (8), The plurality of connection terminals (2) are fixedly mounted on the transformer housing (1), the heat dissipation pipe (3) and the circulation pump (4) are mounted on one side of the transformer housing (1), and the circulation pump (4) is in communication with the heat dissipation pipe (3). The wiring terminal (2) has a ceramic structure on the outside and a hollow metal column (201) on the inside. A plurality of pipe connectors (204) are mounted on the metal column (201). The plurality of pipe connectors (204) are all in communication with the inside of the metal column (201). When the connection terminal (2) is mounted on the transformer box (1), a portion of the pipe connector (204) is located inside the transformer box (1), and another portion is located outside. The pipe connector (204) located outside is connected to a pipe, and the pipe is connected to the circulation pump (4) or the liquid storage tank (8). One part of the wiring terminals (2) serves as a liquid inlet channel, connected to a liquid outlet pipe (5), and the liquid outlet pipe (5) is connected to the circulation pump (4); the other part of the wiring terminals (2) serves as a liquid outlet channel, connected to a liquid inlet pipe (6), and the liquid inlet pipe (6) is connected to the liquid storage tank (8).

2. The transformer heat dissipation assembly with a liquid-electric integrated terminal structure according to claim 1, characterized in that: A vertically arranged partition (202) is fixed inside the metal column (201), and the partition (202) divides the inside of the metal column (201) into two independent spaces (203). The two independent spaces (203) serve as a liquid inlet channel and a liquid return channel, respectively, and are both fixed with two pipe connectors (204).

3. A transformer heat dissipation assembly with a liquid-electric integrated terminal structure according to claim 1 or 2, characterized in that: In a dry-type transformer, a connection terminal (2) located inside the transformer box (1) is connected to a cooling pipe inside the dry-type transformer; in a wet-type transformer, at least one extension tube (7) is connected to the connection terminal (2) located inside the transformer box (1), and the bottom end of the extension tube (7) is close to the bottom of the transformer box (1).

4. The transformer heat dissipation assembly with a liquid-electric integrated terminal structure according to claim 1, characterized in that: A plurality of cooling fans (9) fixed to the transformer box (1) are provided on one side of the cooling pipe (3).

5. The transformer heat dissipation assembly according to claim 1, characterized in that: A plurality of support columns (11) are fixedly mounted on the transformer box (1); an insulating plate (12) is fixed to the plurality of support columns (11) via bolts; the insulating plate (12) is fixed to a plurality of connection terminals (2); a plurality of ceramic seats (10) are fixed to the insulating plate (12); the ceramic seats (10) are used to fix a liquid outlet pipe (5) and a liquid inlet pipe (6).

6. The transformer heat dissipation assembly according to claim 1, characterized in that: A plurality of support columns (11) are fixedly mounted on the transformer box (1), and a protection box (13) is fixed to the plurality of support columns (11) by bolts. The protection box (13) is fixed to a plurality of connection terminals (2). The protection box (13) is made of ceramic material, and a plurality of ceramic seats (10) are fixed to the protection box (13). The ceramic seats (10) are used to fix the liquid outlet pipe (5) and the liquid inlet pipe (6). A sealing cover plate (14) is mounted on one side of the protection box (13) by a plurality of screws.

7. The transformer heat dissipation assembly according to claim 6, characterized in that: A plurality of wiring nozzles (15) are installed on the side of the protective box (13) away from the sealing cover plate (14), and the wiring nozzles (15) include a fixed port (16) fixed on the protective box (13), and an internal thread and a rubber ring (17) are provided inside the fixed port (16). A movable tube (18) is threadedly installed on the fixed port (16), and two notches (19) are symmetrically provided on the movable tube (18). A first pressure block (20) and a second pressure block (21) are movably provided in the two notches (19), and two screws (22) are movably provided on the first pressure block (20), and both of the screws (22) pass through the movable tube (18) and are threadedly connected to the second pressure block (21).

8. The transformer heat dissipation assembly according to claim 1, characterized in that: The system also includes a controller and a temperature sensor. The temperature sensor is located inside the transformer box (1) and is electrically connected to the controller. The controller is electrically connected to the circulation pump (4) and the cooling fan (9) and is used to control the power of the circulation pump (4) and the cooling fan (9).

9. The transformer heat dissipation assembly according to claim 1, characterized in that: The liquid outlet pipe (5) and the liquid inlet pipe (6) are both insulating pipes.

10. The transformer heat dissipation assembly according to claim 9, characterized in that: The liquid outlet pipe (5) and the liquid inlet pipe (6) are ceramic tubes.

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