Distributed photovoltaic dry-type transformer

Abstract

The utility model discloses a distributed photovoltaic dry-type transformer, and relates to the technical field of photovoltaic power generation. The transformer comprises a transformer body, the transformer body comprises a transformer iron core, a top frame and a base, the transformer iron core is assembled between the top frame and the base, a plurality of refrigeration pieces are assembled on the top frame, a heat dissipation assembly is arranged on the top frame, and a dustproof assembly is arranged on the heat dissipation assembly. The heat dissipation assembly comprises an equipment cover, the equipment cover is detachably mounted on the upper surface of the top frame, a rack plate is fixedly arranged on the top wall of the equipment cover, and a movable seat is slidably arranged on the lower surface of the rack plate; according to the utility model, the fan is driven to move horizontally by the cooperation of the motor and the lead screw through the arranged heat dissipation assembly, heat on the three refrigeration sheets is blown out in the horizontal moving process of the fan, and meanwhile, the assembly number of the fan is reduced, so that the cost is reduced; the dustproof nets are arranged on the two sides of the equipment cover, the dustproof nets block dust, the entering amount of the dust is reduced, and therefore the maintenance frequency of the fan is reduced.

Description

Technical Field

[0001] This utility model relates to the field of photovoltaic power generation technology, specifically to a dry-type transformer for distributed photovoltaic systems. Background Technology

[0002] A dry-type transformer for photovoltaic power generation is a transformer specifically designed for photovoltaic power generation systems. It can convert direct current from photovoltaic panels into alternating current and simultaneously boost the voltage from the lower battery voltage to a voltage suitable for the power grid. The main feature of a dry-type transformer is that it does not use liquid coolants such as mineral oil or silicone oil, but instead uses air or solid materials for cooling, thus greatly improving the safety of the transformer.

[0003] CN221446946U discloses a dry-type transformer for photovoltaic power generation, including a transformer body, a top frame, a cooling mechanism, a protective insulation mechanism, and an easy-pull mechanism. The top frame is located above the transformer body, the cooling mechanism is located on the top of the transformer body, the protective insulation mechanism is installed on the outside of the transformer body, and the easy-pull mechanism is installed at the bottom of the transformer body. The protective insulation mechanism includes a shell, a fireproof layer, an insulation layer, a noise reduction layer, and a shock absorption layer. The easy-pull mechanism includes a push-pull plate, a hook seat, a hook, a base, and a crossbar. The cooling mechanism includes a cooling element, a fan, a connecting frame, and a connecting plate. The cooling mechanism can effectively regulate the temperature of the transformer body, ensure the normal operation of the transformer, and prevent performance degradation or damage caused by high temperature. The protective insulation mechanism has multiple layers that are tightly bonded together, which can enhance the safety of the transformer, resist fire, electrical shock, and noise, and also suppress the loss caused by vibration.

[0004] However, the cooling mechanism in this patent still has some shortcomings:

[0005] 1. In this patent, by assembling the same number of fans as the cooling element, the cost of the cooling equipment is relatively high.

[0006] 2. At the same time, the fan in this patent is exposed to the external environment, which easily leads to a large amount of dust adhering to the fan, resulting in a high frequency of fan maintenance. Utility Model Content

[0007] In order to solve the above problems, the purpose of this utility model is to provide a dry-type transformer for distributed photovoltaic power generation.

[0008] To solve the above technical problems, the present invention adopts the following technical solution: a dry-type transformer for distributed photovoltaic power generation, comprising a transformer body, the transformer body comprising a transformer core, a top frame and a base, the transformer core being assembled between the top frame and the base, a plurality of cooling chips being assembled on the top frame, a heat dissipation assembly being provided on the top frame, and a dustproof assembly being provided on the heat dissipation assembly.

[0009] The heat dissipation assembly includes a device cover, which is detachably mounted on the upper surface of the top frame. A frame plate is fixedly installed on the top wall of the device cover. A movable seat is slidably provided on the lower surface of the frame plate. A fan is fixedly installed on the lower surface of the movable seat. A lead screw is provided on the lower surface of the frame plate. The lead screw passes through the movable seat and is threadedly rotatably connected to the movable seat. A motor is fixedly installed on one side of the device cover. The drive output end of the motor is fixedly connected to one end of the lead screw.

[0010] Preferably, two guide rods are fixedly provided on the lower surface of the frame plate, and the movable seat and the two guide rods are slidably connected.

[0011] Preferably, two support plates are fixedly disposed on the lower surface of the frame plate, and the end of the lead screw is rotatably connected to the two support plates.

[0012] Preferably, two lugs are fixedly provided at both ends of the equipment cover, and a fixing bolt is threadedly mounted on each of the four lugs. One end of the fixing bolt is threadedly connected to a threaded hole on the top frame.

[0013] Preferably, the dustproof component includes two dustproof nets, and heat dissipation grooves are provided on both sides of the equipment cover. The dustproof nets can be detachably installed inside the heat dissipation grooves.

[0014] Preferably, each of the two heat dissipation slots has a U-shaped fixing ring fixedly installed on its sidewall, and one side of the dustproof net and one side of the U-shaped fixing ring are in contact.

[0015] Preferably, Z-shaped elastic elements are fixedly provided on the sidewalls at both ends of the two heat dissipation slots, and a limit plate is fixedly provided on one side of each of the four Z-shaped elastic elements.

[0016] Preferably, a rubber pad is fixedly provided on one side of each of the four limiting plates, and one side of the rubber pad is in contact with the other side of the dustproof net.

[0017] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0018] 1. In this utility model, the heat dissipation component is set up, and the fan is driven to move horizontally by the cooperation of the motor and the lead screw. During the horizontal movement, the fan blows out the heat from the three cooling plates, thereby reducing the number of fans and thus reducing the cost.

[0019] 2. In this utility model, by setting dustproof nets on both sides of the equipment cover, the dustproof nets block dust, reduce the amount of dust entering, and thus reduce the maintenance frequency of the fan.

[0020] 3. In this utility model, by setting a limiting plate whose movement and contraction are controlled by a Z-shaped elastic element, the dustproof net can be disassembled when the limiting plate is misaligned with the dustproof net, and the dustproof net can be limited and fixed when the limiting plate is aligned with the dustproof net, thereby facilitating the cleaning of the dustproof net and effectively improving the convenience of cleaning the dustproof net. Attached Figure Description

[0021] 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 some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0022] Figure 1 This is a schematic diagram of the overall structure of the dry-type transformer for distributed photovoltaic power generation according to this utility model.

[0023] Figure 2 This is a schematic diagram of the connection structure between the equipment cover and the top frame of this utility model.

[0024] Figure 3 This is a schematic diagram of the separation structure of the equipment cover and the top frame of this utility model.

[0025] Figure 4 This is a cross-sectional structural diagram of the equipment cover of this utility model.

[0026] Figure 5 This is a partial structural schematic diagram of the heat dissipation component of this utility model.

[0027] Figure 6 This is a schematic diagram of the separation structure of the dustproof net and the U-shaped fixing ring of this utility model.

[0028] Figure 7 This utility model Figure 6 Enlarged schematic diagram of part A in the diagram.

[0029] In the diagram: 1. Transformer body; 11. Transformer core; 12. Top frame; 13. Base; 2. Cooling element; 3. Heat dissipation assembly; 31. Equipment cover; 32. Frame plate; 33. Moving seat; 34. Fan; 35. Lead screw; 36. Guide rod; 361. Support plate; 37. Motor; 38. Ear block; 39. Fixing bolt; 4. Dustproof assembly; 41. Dustproof net; 42. Heat dissipation groove; 43. U-shaped fixing ring; 44. Z-shaped elastic element; 45. Limiting plate; 46. Rubber pad. 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] Example: Figure 1-7 As shown, this utility model provides a dry-type transformer for distributed photovoltaics, including a transformer body 1. The transformer body 1 includes a transformer core 11, a top frame 12, and a base 13. The transformer core 11 is assembled between the top frame 12 and the base 13. Several cooling plates 2 are assembled on the top frame 12. The cooling plates 2 can absorb and dissipate the heat generated by the transformer during operation. This is the prior art in the comparative case. A heat dissipation component 3 is provided on the top frame 12. By setting the heat dissipation component 3, the heat dissipation component 3 can blow out the heat on the three cooling plates 2. A dustproof component 4 is provided on the heat dissipation component 3. By setting the dustproof component 4, the heat dissipation component 3 can be protected from dust, preventing a lot of dust from entering.

[0032] The heat dissipation assembly 3 includes a device cover 31, which is detachably mounted on the upper surface of the top frame 12. A frame plate 32 is fixedly mounted on the top wall of the device cover 31. A movable seat 33 is slidably mounted on the lower surface of the frame plate 32. A fan 34 is fixedly mounted on the lower surface of the movable seat 33. By driving the movable seat 33 to move horizontally within the device cover 31, the movable seat 33 enables the fan 34 to move horizontally synchronously. During the horizontal movement, the fan 34 can blow away the heat from the three cooling plates 2, thereby reducing the number of fans 34 required and reducing costs. A lead screw 35 is provided on the lower surface of the frame plate 32. The lead screw 35 passes through the movable seat 33 and is threadedly connected to the movable seat 33. When lever 35 rotates, the lead screw 35 can drive the movable seat 33 to move horizontally. Two guide rods 36 are fixedly installed on the lower surface of the frame plate 32. The movable seat 33 and the two guide rods 36 are slidably connected. By setting the guide rods 36, the guide rods 36 can guide the movable seat 33 in the horizontal direction, so that the movable seat 33 can keep moving in the horizontal direction. Two support plates 361 are fixedly installed on the lower surface of the frame plate 32. The end of the lead screw 35 is rotatably connected to the two support plates 361. A motor 37 is fixedly installed on one side of the equipment cover 31. The drive output end of the motor 37 is fixedly connected to one end of the lead screw 35. By turning on the motor 37, the drive shaft of the motor 37 can make the lead screw 35 rotate.

[0033] Two lugs 38 are fixedly installed at both ends of the equipment cover 31. Each of the four lugs 38 is threaded with a fixing bolt 39. One end of the fixing bolt 39 is threadedly connected to the threaded hole on the top frame 12. By setting the lugs 38 and fixing bolts 39, it is easy for operators to fix the equipment cover 31 on the top frame 12. By reversing the operation, the equipment cover 31 can be removed from the top frame 12, thus improving flexibility.

[0034] The dustproof component 4 includes two dustproof nets 41. Heat dissipation slots 42 are provided on both sides of the equipment cover 31. The dustproof nets 41 can be detachably installed inside the heat dissipation slots 42. By setting the dustproof nets 41 and the heat dissipation slots 42, the heat blown out by the fan 34 can be discharged to the outside through the heat dissipation slots 42. The dustproof nets 41 can prevent dust from entering the equipment cover 31 and affecting the fan 34, thus reducing the maintenance frequency of the fan 34. The side walls of the two heat dissipation slots 42 are fixedly provided with U-shaped fixing rings 43. One side of the dustproof net 41 and one side of the U-shaped fixing ring 43 are in contact. By setting the U-shaped fixing rings 43, the U-shaped fixing rings 43 can limit the position of the dustproof net 41 during the installation process.

[0035] Z-shaped elastic elements 44 are fixedly installed on the side walls at both ends of the two heat dissipation slots 42. Limiting plates 45 are fixedly installed on one side of each of the four Z-shaped elastic elements 44. Rubber pads 46 are fixedly installed on one side of each of the four limiting plates 45. One side of the rubber pads 46 is in contact with the other side of the dustproof net 41. By setting the Z-shaped elastic elements 44, limiting plates 45 and rubber pads 46, the initial state of the Z-shaped elastic elements 44 can make the limiting plates 45 always move horizontally toward the side of the dustproof net 41. Thus, the dustproof net 41 in the heat dissipation slot 42 is limited and fixed by the rubber pads 46. When the limiting plates 45 are pushed in the opposite direction, the limiting plates 45 and the dustproof net 41 can be misaligned, and the dustproof net 41 can be removed from the position of the heat dissipation slot 42.

[0036] During the operation of the transformer body 1, the heat dissipation cooling plate 2 absorbs and dissipates the heat generated by the transformer core 11 during operation. At the same time, the operator turns on the motor 37 and the fan 34. The fan 34 rotates to generate airflow. The drive shaft of the motor 37 causes the lead screw 35 to rotate. The lead screw 35 drives the moving seat 33 to move horizontally. The moving seat 33 causes the fan 34 to move horizontally in sync. During the horizontal movement, the fan 34 blows out the heat from the three cooling plates 2, thereby reducing the number of fans 34 required and thus reducing costs.

[0037] The two dust filters 41 installed at the same time block dust, reduce the amount of dust entering, and thus reduce the maintenance frequency of the fan 34.

[0038] When the dustproof net 41 needs to be cleaned, the operator simultaneously pushes the two limiting plates 45 to move in opposite directions, and the two Z-shaped elastic elements 44 retract until the two limiting plates 45 are completely displaced from the dustproof net 41. Then the dustproof net 41 can be removed from the position of the heat dissipation groove 42. After the dustproof net 41 is cleaned, the reverse operation can be performed to install the dustproof net 41 into the groove of the heat dissipation groove 42, thus facilitating the cleaning of the dustproof net 41 and effectively improving the convenience of cleaning the dustproof net 41.

[0039] Obviously, those skilled in the art can make various modifications and variations to this utility model without departing from its spirit and scope. Therefore, if these modifications and variations fall within the scope of the claims of this utility model and their equivalents, this utility model also intends to include these modifications and variations.

Claims

1. Dry-type transformer for distributed photovoltaics, comprising a transformer body (1), characterized by the fact that: The transformer body (1) includes a transformer core (11), a top frame (12) and a base (13), the transformer core (11) is assembled between the top frame (12) and the base (13), a plurality of refrigeration fins (2) are assembled on the top frame (12), a heat dissipation assembly (3) is arranged on the top frame (12), and a dustproof assembly (4) is arranged on the heat dissipation assembly (3). The heat dissipation assembly (3) comprises a device cover (31), the device cover (31) is detachably installed on the upper surface of the top frame (12), the top wall of the device cover (31) is fixedly provided with a rack plate (32), the lower surface of the rack plate (32) is slidably provided with a moving seat (33), the lower surface of the moving seat (33) is fixedly installed with a fan (34), the lower surface of the rack plate (32) is provided with a lead screw (35), the lead screw (35) penetrates through the moving seat (33) and is in threaded rotation connection with the moving seat (33), and one side of the device cover (31) is fixedly installed with a motor (37), and the driving output end of the motor (37) is fixedly connected with one end of the lead screw (35).

2. The dry-type transformer for distributed photovoltaic applications of claim 1, wherein, The lower surface of the rack plate (32) is fixedly provided with two guide rods (36), and the moving seat (33) and the two guide rods (36) are in sliding connection.

3. The dry-type transformer for distributed photovoltaic applications of claim 1, wherein, The lower surface of the rack plate (32) is fixedly provided with two support plates (361), and the end of the lead screw (35) is in rotation connection with the two support plates (361).

4. The dry-type transformer for distributed photovoltaic applications of claim 1, wherein, Both ends of the device cover (31) are fixedly provided with two ear blocks (38), and four ear blocks (38) are in threaded rotation installation with fixed bolts (39), and one end of the fixed bolt (39) is in threaded rotation connection with the threaded hole on the top frame (12).

5. The dry-type transformer for distributed photovoltaic applications of claim 1, wherein, The dustproof assembly (4) comprises two dustproof nets (41), both sides of the device cover (31) are provided with heat dissipation grooves (42), and the dustproof nets (41) are detachably installed in the heat dissipation grooves (42).

6. The dry-type transformer for distributed photovoltaic applications of claim 5, wherein, The side walls of the two heat dissipation grooves (42) are fixedly provided with return type fixing rings (43), and one side of the dustproof net (41) is in movable contact with one side of the return type fixing ring (43).

7. The dry-type transformer for distributed photovoltaic applications of claim 5, wherein, The side walls of the two heat dissipation grooves (42) are fixedly provided with Z-shaped elastic members (44), and one side of the four Z-shaped elastic members (44) is fixedly provided with limiting plates (45).

8. The dry-type transformer for distributed photovoltaic applications of claim 7, wherein, One side of the four limiting plates (45) is fixedly provided with rubber pads (46), and one side of the rubber pad (46) is in movable contact with the other side of the dustproof net (41).

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