Dry-type transformer with double cooling structure

Abstract

The utility model relates to a dry -type transformer with double cooling structure, including box, air cooling mechanism, liquid cooling mechanism and refrigeration mechanism, the front of box is connected with the door of box and rotates, and the inside of box is provided with transformer, air cooling mechanism sets up at the back of box, and air cooling mechanism penetrates box and is used for providing air cooling heat dissipation for transformer, liquid cooling mechanism sets up in the box, and liquid cooling mechanism includes water cooling box, circulating pump and heat exchange coil, water cooling box is fixedly connected with the bottom of box inner wall through support block, and the import of circulating pump is linked with water cooling box, and the export of circulating pump is linked with heat exchange coil, and heat exchange coil is set up on the surface of transformer, refrigeration mechanism sets up in the box, the cooperation of air cooling mechanism, liquid cooling mechanism and refrigeration mechanism between the utility model, liquid cooling mechanism and refrigeration mechanism work and carry out the cooling to transformer, and export the heat that liquid cooling mechanism brought out from transformer from the box, realize the effective cooling to transformer.

Description

Technical Field

[0001] This utility model relates to the field of dry-type transformer technology, and specifically to a dry-type transformer with a dual cooling structure. Background Technology

[0002] Dry-type transformers are widely used in local lighting, high-rise buildings, airports, docks, CNC machinery equipment, and other places. Simply put, a dry-type transformer is a transformer whose core and windings are not immersed in insulating oil. With the rapid development of my country's economic construction and the continuous increase in urban and rural electricity load, dry-type transformers, which are oil-free, fireproof, long-lasting, energy-saving, low-noise, easy to maintain, and safe and reliable, are being used more and more widely.

[0003] Chinese Patent CN219610172U discloses a dry-type transformer with a dual cooling structure, including a dry-type transformer housing. The housing has a door hinged to its surface. A heat dissipation device is installed at the top of the housing. Drying devices are installed on both sides of the interior of the housing. The dry-type transformer is installed in the middle of the housing. Water-cooling devices are installed on both sides of the transformer at the bottom of the housing. This dry-type transformer with a dual cooling structure allows for better air circulation within the housing through the heat dissipation device at the top and the ventilation holes in the door, resulting in improved heat dissipation. The water-cooling devices inside the housing provide timely cooling, and the dual cooling structure further enhances the overall cooling effect.

[0004] However, the above technical solution has the following shortcomings: the water-cooled box is set inside the dry-type transformer box. On the one hand, the heat carried out by the water-cooling device from the dry-type transformer is still inside the dry-type transformer box. On the other hand, no cooling mechanism is set in the water-cooled box, and the water temperature continues to rise, making it difficult to effectively cool the dry-type transformer. Utility Model Content

[0005] The purpose of this invention is to address the problems existing in the background technology by proposing a dry-type transformer with a dual cooling structure.

[0006] The technical solution of this utility model: a dry-type transformer with a dual cooling structure, including...

[0007] The enclosure has a door that rotates on the front, and a transformer is installed inside the enclosure.

[0008] The air-cooling mechanism is located at the back of the enclosure and extends through the enclosure to provide air-cooling heat dissipation for the transformer.

[0009] The liquid cooling mechanism is located inside the housing and includes a water cooling box, a circulating pump, and a heat exchange coil. The water cooling box is fixedly connected to the bottom of the inner wall of the housing via a support block. The circulating pump is located at the top of the water cooling box. The inlet of the circulating pump is connected to the water cooling box, and the outlet of the circulating pump is connected to the heat exchange coil. The heat exchange coil is sleeved on the surface of the transformer.

[0010] The refrigeration mechanism is located inside the enclosure, between the liquid cooling mechanism and the air cooling mechanism.

[0011] Preferably, the air-cooling mechanism includes a mounting frame, a support frame, and a cooling fan; the mounting frame is fixedly installed on the back of the housing and is connected to the housing; the support frame is installed inside the mounting frame; the cooling fan is installed inside the mounting frame through the support frame; and a protective net is fixedly connected to the inlet of the mounting frame.

[0012] Preferably, a partition plate is fixedly connected inside the water-cooled box, which divides the water-cooled box into an outlet chamber and a return chamber.

[0013] Preferably, the inlet of the circulating pump is connected to the outlet chamber through an inlet pipe, and the outlet of the circulating pump is connected to the inlet of the heat exchange coil through a distribution pipe.

[0014] Preferably, the outlet of the heat exchange coil is connected to a return water pipe, and the end of the return water pipe away from the heat exchange coil passes through the water-cooled box and extends into the return water chamber.

[0015] Preferably, the refrigeration mechanism includes a cooling plate and heat dissipation fins; the cooling plate is fixedly connected to the water-cooled box to cool the liquid in the return water chamber, and multiple heat dissipation fins are provided, which are fixedly connected to the cooling plate.

[0016] Preferably, a ventilation hole is provided through the front of the door, a filter screen is installed in the ventilation hole, and a door handle is fixedly connected to the front of the door.

[0017] Compared with the prior art, the above-mentioned technical solution of this utility model has the following beneficial technical effects:

[0018] The coordinated arrangement of the air-cooling mechanism, liquid-cooling mechanism, and refrigeration mechanism in this utility model allows the air-cooling mechanism to work alone to dissipate heat from the transformer when it is under low load. When the transformer is under high load, the cooling fan rotates in reverse, and the liquid-cooling mechanism and refrigeration mechanism work simultaneously to cool the transformer and expel the heat carried out by the liquid-cooling mechanism from the transformer into the housing, thus achieving effective cooling of the transformer. Attached Figure Description

[0019] Figure 1 This is a perspective view of one embodiment of the present invention.

[0020] Figure 2 This is a perspective view of a second-view embodiment of the present invention.

[0021] Figure 3 This is a schematic diagram of the internal structure of the box in one embodiment of the present invention.

[0022] Figure 4 This is a schematic diagram of the air-cooling mechanism in one embodiment of the present invention.

[0023] Figure 5 This is a perspective view of the liquid cooling mechanism in one embodiment of the present invention.

[0024] Figure 6 This is a cross-sectional view of the liquid cooling mechanism in one embodiment of the present invention.

[0025] Reference numerals in the attached diagram: 1. Enclosure; 21. Cooling element; 22. Heat dissipation fins; 31. Mounting frame; 32. Support frame; 33. Cooling fan; 34. Protective net; 41. Water-cooled box; 42. Circulating pump; 43. Heat exchange coil; 44. Partition plate; 45. Water outlet chamber; 46. Water return chamber; 47. Water inlet pipe; 48. Water distribution pipe; 49. Water return pipe; 5. Enclosure door; 6. Transformer; 7. Filter screen; 8. Enclosure door handle. Detailed Implementation

[0026] Example 1

[0027] like Figure 1-6 As shown, the present invention proposes a dry-type transformer with a dual cooling structure, including a housing 1, an air-cooling mechanism, a liquid-cooling mechanism, and a refrigeration mechanism;

[0028] The front of the enclosure 1 is rotatably connected to the door 5. The front of the door 5 has a through-hole with a filter screen 77. The front of the door 5 is fixedly connected to the door handle 8. The inside of the enclosure 1 is a transformer 6, which is a dry-type transformer.

[0029] The air-cooling mechanism is located on the back of the enclosure 1 and extends through the enclosure 1 to provide air-cooling heat dissipation for the transformer 6.

[0030] The liquid cooling mechanism is installed inside the housing 1. The liquid cooling mechanism includes a water cooling box 41, a circulating pump 42, and a heat exchange coil 43. The water cooling box 41 is fixedly connected to the bottom of the inner wall of the housing 1 by a support block. The circulating pump 42 is installed on the top of the water cooling box 41. The circulating pump 42 is connected to the control system and power supply by a wire. The inlet of the circulating pump 42 is connected to the water cooling box 41, and the outlet of the circulating pump 42 is connected to the heat exchange coil 43. The heat exchange coil 43 is sleeved on the surface of the transformer 6.

[0031] The refrigeration mechanism is located inside the housing 1, between the liquid cooling mechanism and the air cooling mechanism.

[0032] Example 2

[0033] like Figure 4 As shown, this utility model proposes a dry-type transformer with a dual cooling structure. Compared with Embodiment 1, this embodiment also specifically discloses the structure of the air-cooling mechanism. The air-cooling mechanism includes a mounting frame 31, a support frame 32, and a cooling fan 33. The mounting frame 31 is fixedly installed on the back of the housing 1 and is connected to the housing 1. The support frame 32 is installed inside the mounting frame 31. The cooling fan 33 is installed inside the mounting frame 31 through the support frame 32. The cooling fan 33 has forward and reverse rotation functions and is connected to the control system and power supply through wires. When the cooling fan 33 rotates forward, it blows air onto the transformer 6 to dissipate heat and cool the transformer 6. When the cooling fan 33 rotates in reverse, it carries the heat generated by the cooling mechanism out of the housing 1. A protective net 34 is fixedly connected to the inlet of the mounting frame 31, and a filter screen is provided on the surface of the protective net 34.

[0034] Example 3

[0035] like Figure 5-6 As shown, this utility model proposes a dry-type transformer with a dual cooling structure. Compared with Embodiment 2, this embodiment also specifically discloses the structure of the water-cooled box 41. A partition plate 44 is fixedly connected inside the water-cooled box 41, which divides the water-cooled box 41 into an outlet water chamber 45 and a return water chamber 46. The inlet of the circulating pump 42 is connected to the outlet water chamber 45 through an inlet pipe 47, and the outlet of the circulating pump 42 is connected to the inlet of the heat exchange coil 43 through a water distribution pipe 48. The outlet of the heat exchange coil 43 is connected to a return water pipe 49, and the end of the return water pipe 49 away from the heat exchange coil 43 passes through the water-cooled box 41 and extends into the return water chamber 46.

[0036] Example 4

[0037] like Figure 4-5 As shown, this utility model proposes a dry-type transformer with a dual cooling structure. Compared with Embodiment 3, this embodiment also specifically discloses the structure of the cooling mechanism. The cooling mechanism includes a cooling plate 21 and heat dissipation fins 22. The cooling plate 21 is fixedly connected to the water-cooled box 41 to cool the liquid in the return water chamber 46. The cooling plate 21 is connected to the control system and power supply through wires. The cooling side of the cooling plate 21 extends into the return water chamber 46. Multiple heat dissipation fins 22 are provided. The heat dissipation fins 22 are fixedly connected to the heating side of the cooling plate 21 to accelerate the heat dissipation of the cooling plate 21.

[0038] When transformer 6 is operating at low power, cooling fan 33 operates, blowing air from outside the housing 1 onto transformer 6 to cool it down. When transformer 6 is operating at high power and the temperature is high, circulation pump 42 and cooling coil 21 operate, and cooling fan 33 rotates in reverse. Circulation pump 42 operates to send coolant from outlet chamber 45 into heat exchange coil 43 through inlet pipe 47 and distribution pipe 48. Coolant in heat exchange coil 43 exchanges heat with transformer 6, cooling it down. The heated coolant enters return chamber 46 in water-cooled tank 41 through return pipe 49. Cooling coil 21 operates to cool coolant in return chamber 46. Cooled coolant enters outlet chamber 45 for circulation. Cooling fan 33 rotates in reverse, carrying the heat generated on the back of cooling coil 21 out of housing 1.

[0039] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited thereto. Various changes can be made within the scope of knowledge possessed by those skilled in the art without departing from the spirit of the present invention.

Claims

1. A dry-type transformer with a dual cooling structure, characterized in that, include The enclosure (1) has a door (5) rotatably connected to its front side, and a transformer (6) is installed inside the enclosure (1). The air-cooling mechanism is located on the back of the enclosure (1) and extends through the enclosure (1) to provide air-cooling heat dissipation for the transformer (6); The air-cooling mechanism includes a mounting frame (31), a support frame (32), and a cooling fan (33). The mounting frame (31) is fixedly mounted on the back of the housing (1) and is connected to the housing (1). The support frame (32) is located inside the mounting frame (31). The cooling fan (33) has forward and reverse rotation functions and is located inside the mounting frame (31) via the support frame (32). A protective net (34) is fixedly connected to the inlet of the mounting frame (31). The liquid cooling mechanism is installed inside the housing (1). The working end of the liquid cooling mechanism is sleeved on the transformer (6) to provide liquid cooling heat dissipation for the transformer (6). The refrigeration mechanism is installed inside the housing (1) to cool the coolant in the liquid cooling mechanism. The refrigeration mechanism is located between the liquid cooling mechanism and the air cooling mechanism.

2. A dry-type transformer with a dual cooling structure according to claim 1, characterized in that, The liquid cooling mechanism includes a water cooling box (41), a circulating pump (42), and a heat exchange coil (43). The water cooling box (41) is fixedly connected to the bottom of the inner wall of the box body (1) through a support block. The circulating pump (42) is set on the top of the water cooling box (41). The inlet of the circulating pump (42) is connected to the water cooling box (41), and the outlet of the circulating pump (42) is connected to the heat exchange coil (43). The heat exchange coil (43) is sleeved on the surface of the transformer (6).

3. A dry-type transformer with a dual cooling structure according to claim 1, characterized in that, A partition plate (44) is fixedly connected inside the water-cooled box (41), which divides the water-cooled box (41) into an outlet chamber (45) and a return chamber (46).

4. A dry-type transformer with a dual cooling structure according to claim 3, characterized in that, The inlet of the circulating pump (42) is connected to the outlet chamber (45) through the inlet pipe (47), and the outlet of the circulating pump (42) is connected to the inlet of the heat exchange coil (43) through the distribution pipe (48).

5. A dry-type transformer with a dual cooling structure according to claim 3, characterized in that, The outlet of the heat exchange coil (43) is connected to a return water pipe (49). The end of the return water pipe (49) away from the heat exchange coil (43) passes through the water-cooled box (41) and extends into the return water chamber (46).

6. A dry-type transformer with a dual cooling structure according to claim 3, characterized in that, The refrigeration mechanism includes a cooling plate (21) and heat dissipation fins (22); the cooling plate (21) is fixedly connected to the water cooling box (41) to cool the liquid in the return water chamber (46), and multiple heat dissipation fins (22) are provided, and the heat dissipation fins (22) are fixedly connected to the cooling plate (21).

7. A dry-type transformer with a dual cooling structure according to claim 1, characterized in that, A ventilation hole is provided through the front of the door (5), and a filter screen (7) is provided in the ventilation hole. A door handle (8) is fixedly connected to the front of the door (5).

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