Photovoltaic transformer high-efficiency heat dissipation structure

Abstract

The application discloses a photovoltaic transformer high-efficiency heat dissipation structure and belongs to the technical field of photovoltaic transformer heat dissipation. The top of a photovoltaic transformer frame body is fixedly provided with a photovoltaic transformer top body. One side of a photovoltaic transformer side body is connected with a winding and unwinding assembly through a ball screw nut pair transmission. One side of the photovoltaic transformer top body is fixedly provided with an electric winch. The winding and unwinding assembly is internally provided with a cable. One end of the cable penetrates through the winding and unwinding assembly and extends to the outside of the electric winch. Therefore, the cable is gradually separated from one side of the electric winch and the other side of the driving gear when the photovoltaic transformer is cooled, and then the photovoltaic transformer side body is slowly opened in a hinged mode with the photovoltaic transformer frame body, so that the accommodating cavity can increase the contact area with the external environment, and the photovoltaic transformer can be rapidly cooled.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of photovoltaic transformer heat dissipation, and particularly relates to a photovoltaic transformer high-efficiency heat dissipation structure. BACKGROUND

[0002] A photovoltaic transformer is a kind of transformer specially used in a photovoltaic (solar) power generation system, and mainly functions to convert low-voltage alternating current generated by the photovoltaic power generation system into a voltage level suitable for transmission to a power grid, or to perform voltage adjustment in some applications to adapt to load requirements. The design requirements of the photovoltaic transformer are relatively special because the working environment and electrical characteristics of the photovoltaic power generation system are different from those of a traditional power system.

[0003] The photovoltaic power generation system mainly consists of photovoltaic components, an inverter, a transformer, and grid-connected equipment. The photovoltaic components convert solar energy into direct current (DC), and then the inverter converts the direct current into alternating current (AC). However, the alternating current output by the inverter is usually low-voltage alternating current, which needs to be raised to a voltage level (such as 380V, 10kV, 35kV, etc.) suitable for transmission to the power grid through the photovoltaic transformer.

[0004] The main functions of the photovoltaic transformer are:

[0005] Voltage conversion: raising the low-voltage alternating current output by the inverter to a voltage level suitable for grid connection.

[0006] Isolation: providing electrical isolation to ensure the safety of electrical equipment and prevent direct electrical interference between devices.

[0007] Power regulation: sometimes the voltage and current need to be adjusted according to actual requirements to ensure the stability of the power grid.

[0008] Due to the sealed structure and high working power of the photovoltaic transformer, the photovoltaic transformer has an urgent need for heat dissipation. Compared with traditional oil-immersed transformers, the photovoltaic transformer cannot be accommodated in oil for heat dissipation to ensure its working efficiency, and therefore needs to meet its heat dissipation requirements. SUMMARY

[0009] In order to overcome the above defects, the application provides a photovoltaic transformer high-efficiency heat dissipation structure to solve the problems in the above background technology.

[0010] In order to achieve the above object, the present application provides the following technical scheme: a photovoltaic transformer high-efficiency heat dissipation structure, comprising a photovoltaic transformer frame body, a photovoltaic transformer side body is hinged to the side wall of the photovoltaic transformer frame body, a photovoltaic transformer top body is fixedly installed at the top of the photovoltaic transformer frame body, a winding and unwinding assembly is connected to one side of the photovoltaic transformer side body through a ball screw nut pair transmission, an electric winch is fixedly installed at one side of the photovoltaic transformer top body, a cable is arranged in the winding and unwinding assembly, one end of the cable passes out of the winding and unwinding assembly and extends to the outside of the electric winch.

[0011] As a further scheme of the present application: a photovoltaic transformer high-efficiency heat dissipation structure, the winding and unwinding assembly comprises a driving piece frame and a driven piece frame, the driving piece frame is fixedly connected with the driven piece frame, a driving shaft is rotatably connected in the driving piece frame, a driving gear is sleeved on the outer periphery of the driving shaft, a driven gear is rotatably connected in the driven piece frame, a driven winch is fixedly installed at one side of the driven gear, the driving gear is engaged with the driven gear, one end of the cable is wound around the outer periphery of the driven winch.

[0012] As a further scheme of the present application: a photovoltaic transformer high-efficiency heat dissipation structure, further comprising a guide assembly, the guide assembly comprises a guide ring, a guide seat and a guide cylinder, the guide ring is fixedly connected with the photovoltaic transformer frame body, one side of the guide seat is fixedly connected with the guide ring, the guide cylinder is rotatably connected with the guide seat, and the guide cylinder is movably connected with the cable.

[0013] As a further scheme of the present application: a photovoltaic transformer high-efficiency heat dissipation structure, the ball screw nut pair comprises a motor seat, a lead screw and a nut, the motor seat is fixedly connected with the photovoltaic transformer side body, the lead screw is rotatably connected with the motor seat at both ends, the nut is fixedly connected with the driving piece frame at one side, the nut is sleeved on the outer periphery of the lead screw and movably connected with the lead screw.

[0014] As a further scheme of the present application: a photovoltaic transformer high-efficiency heat dissipation structure, further comprising a ground-touching assembly, the ground-touching assembly comprises a ground-touching shaft and a ground-touching seat, the ground-touching shaft is fixedly connected with the driving piece frame, the ground-touching seat is fixedly connected with the ground-touching shaft, and the ground-touching seat is protrusively arranged at the outer edge of the driving piece frame.

[0015] As a further scheme of the present application: a photovoltaic transformer high-efficiency heat dissipation structure, one side of the photovoltaic transformer frame body is hinged with a photovoltaic transformer door body, and a handle is fixedly installed at one side of the photovoltaic transformer door body.

[0016] As a further scheme of the present application: a photovoltaic transformer high-efficiency heat dissipation structure, the photovoltaic transformer frame body is a cuboid structure, three groups of photovoltaic transformer side bodies are arranged on the side of the photovoltaic transformer frame body and are hinged with the photovoltaic transformer frame body, the photovoltaic transformer door body is arranged on the other side of the photovoltaic transformer frame body and is hinged with the photovoltaic transformer door body, the photovoltaic transformer top body is arranged on the top of the photovoltaic transformer frame body and is fixedly connected with the photovoltaic transformer frame body, the photovoltaic transformer door body, the photovoltaic transformer top body and the photovoltaic transformer side body surround a containing cavity, and the containing cavity is arranged in the interior of the photovoltaic transformer frame body.

[0017] As a further scheme of the present application: a photovoltaic transformer high-efficiency heat dissipation structure, the guide seat and the guide cylinder are arranged in the interior of the guide ring in a cross structure.

[0018] As a further scheme of the present application: a photovoltaic transformer high-efficiency heat dissipation structure, one side of the photovoltaic transformer side body is fixedly provided with a servo motor, and the output end of the servo motor is fixedly connected with the lead screw through the motor seat.

[0019] As a further scheme of the present application: a photovoltaic transformer high-efficiency heat dissipation structure, the ground contact seat is made of high-carbon steel and has a hardness of 60-75HRC.

[0020] Compared with the prior art, the present application has the beneficial effects that:

[0021] 1. Since the side wall of the photovoltaic transformer frame body is hinged with the photovoltaic transformer side body, the top of the photovoltaic transformer frame body is fixedly provided with the photovoltaic transformer top body, one side of the photovoltaic transformer side body is connected with the retracting assembly through the ball screw nut pair transmission, one side of the photovoltaic transformer top body is fixedly provided with the electric winch, the interior of the retracting assembly is provided with the cable, and one end of the cable extends out of the retracting assembly and extends to the outside of the electric winch, so that the cable is gradually separated from one side of the electric winch and the driving gear when the photovoltaic transformer is cooled by the electric winch or the driven winch, and then the photovoltaic transformer side body is slowly opened by the hinged mode of the photovoltaic transformer side body and the photovoltaic transformer frame body, so that the containing cavity can increase the contact area with the external environment, and the rapid heat dissipation of the photovoltaic transformer is realized.

[0022] 2. The photovoltaic transformer side body can be changed from the inclined state to the state of being placed in close contact with the photovoltaic transformer frame body by the gradual tightening of the electric winch or the driven winch, and the reset of the equipment after heat dissipation can be realized.

[0023] 3. Since the guide assembly comprises a guide ring, a guide seat and a guide cylinder, the guide ring is fixedly connected with the photovoltaic transformer frame body, one side of the guide seat is fixedly connected with the guide ring, the guide cylinder is rotatably connected with the guide seat, and the guide cylinder is movably connected with the cable, so that the position of the cable can be limited through the guide cylinder, thereby avoiding the problem of cable abrasion caused by contact and friction between the cable and the accommodating cavity.

[0024] 4. Since the motor seat is fixedly connected with the photovoltaic transformer side body, both ends of the lead screw are rotatably connected with the motor seat, one side of the nut is fixedly connected with the driving piece frame, and the nut is sleeved on the outer periphery of the lead screw and movably connected with the lead screw, so that the height of the winding and unwinding assembly can be adjusted through the ball screw nut pair to limit the unfolding angle of the photovoltaic transformer side body. Specifically, when the height of the winding and unwinding assembly is in the upper half position of the photovoltaic transformer side body, the cable can be released more to keep the photovoltaic transformer side body at a larger unfolding angle, facilitating heat dissipation, and when the winding and unwinding assembly is in the lower half position of the photovoltaic transformer side body, the cable is limited in release and keeps the photovoltaic transformer side body at a smaller unfolding angle, so that the heat dissipation speed can be controlled. BRIEF DESCRIPTION OF DRAWINGS

[0025] Figure 1 It is a schematic diagram of the overall structure of the photovoltaic transformer high-efficiency heat dissipation structure.

[0026] Figure 2 It is a schematic diagram of the structure of the photovoltaic transformer side body after opening in the photovoltaic transformer high-efficiency heat dissipation structure.

[0027] Figure 3 It is a schematic diagram of the structure of the winding and unwinding assembly in the photovoltaic transformer high-efficiency heat dissipation structure.

[0028] Figure 4 It is a schematic diagram of the structure of the guide assembly in the photovoltaic transformer high-efficiency heat dissipation structure.

[0029] Figure 5 It is a schematic diagram of the structure of the ball screw nut pair in the photovoltaic transformer high-efficiency heat dissipation structure.

[0030] Figure 6 It is a schematic diagram of the structure of the accommodating cavity in the photovoltaic transformer high-efficiency heat dissipation structure.

[0031] In the figure: 1, photovoltaic transformer frame; 2, photovoltaic transformer door body; 3, photovoltaic transformer top body; 4, photovoltaic transformer side body; 5, electric winch; 6, winding and unwinding assembly; 61, driving piece frame; 62, driven piece frame; 63, driven gear; 64, driven winch; 65, winch pad; 66, driving shaft; 67, driving gear; 7, guide assembly; 71, guide ring; 72, guide seat; 73, guide cylinder; 8, cable; 9, ground-touching assembly; 91, ground-touching shaft; 92, ground-touching seat; 10, ball screw nut pair; 101, motor seat; 102, screw rod; 103, nut; 11, accommodating cavity. DETAILED DESCRIPTION

[0032] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the present application.

[0033] In the description of the present application, it should be noted that the orientations or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first", "second", "third" are only for the purpose of description, and cannot be understood as indicating or implying relative importance. In the description of the present application, it should be noted that unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connecting", "arranging" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium, or it can be the communication inside two elements. For those skilled in the art, the specific meanings of the above terms in the present application can be understood according to the specific circumstances. The embodiments of the present application will be described below according to the overall structure of the present application.

[0034] As shown in the drawings, the present application provides a technical scheme: a photovoltaic transformer high-efficiency heat dissipation structure, comprising a photovoltaic transformer frame 1, the side wall of the photovoltaic transformer frame 1 is hinged with a photovoltaic transformer side body 4, the top of the photovoltaic transformer frame 1 is fixedly installed with a photovoltaic transformer top body 3, one side of the photovoltaic transformer side body 4 is drivingly connected with a winding and unwinding assembly 6 through a ball screw nut pair 10, one side of the photovoltaic transformer top body 3 is fixedly installed with an electric winch 5, the inside of the winding and unwinding assembly 6 is provided with a cable 8, one end of the cable 8 penetrates out of the winding and unwinding assembly 6 and extends to the outside of the electric winch 5;

[0035] Therefore, when the photovoltaic transformer dissipates heat, it can be released through the electric winch 5 or the driven winch 64. The driving of the driven winch 64 can be realized through the servo motor fixedly installed on one side of the driving member frame 61. The servo motor drives the driving shaft 66 to rotate, the driving shaft 66 drives the driving gear 67 to rotate, and the driving gear 67 drives the meshing driven gear 63 to rotate, so as to realize the rotation of the driven winch 64. The cable 8 is gradually separated from one side of the electric winch 5 and the other side of the driving gear 67, and then the photovoltaic transformer side body 4 is slowly opened by hinging the photovoltaic transformer side body 4 with the photovoltaic transformer frame 1, so that the accommodation cavity 11 can increase the contact area with the external environment, and the rapid heat dissipation of the photovoltaic transformer is realized.

[0036] At the same time, through the gradual tightening of the electric winch 5 or the driven winch 64, the photovoltaic transformer side body 4 can be changed from the inclined state to the state of being placed in close contact with the photovoltaic transformer frame 1, and the reset of the equipment after heat dissipation can be realized.

[0037] The winding and unwinding assembly 6 comprises a driving member frame 61 and a driven member frame 62, the driving member frame 61 is fixedly connected with the driven member frame 62, the inside of the driving member frame 61 is rotatably connected with a driving shaft 66, the outer periphery of the driving shaft 66 is sleeved with a driving gear 67, the inside of the driven member frame 62 is rotatably connected with a driven gear 63, one side of the driven gear 63 is fixedly installed with a driven winch 64, the driving gear 67 is meshed with the driven gear 63, and one end of the cable 8 is wound around the outer periphery of the driven winch 64.

[0038] The heat dissipation mechanism further comprises a guide assembly 7, the guide assembly 7 comprises a guide ring 71, a guide seat 72 and a guide cylinder 73, the guide ring 71 is fixedly connected with the photovoltaic transformer frame 1, one side of the guide seat 72 is fixedly connected with the guide ring 71, the guide cylinder 73 is rotatably connected with the guide seat 72, and the guide cylinder 73 is movably connected with the cable 8. Therefore, the position of the cable 8 can be limited through the guide cylinder 73, so as to avoid the problem of abrasion of the cable 8 caused by the contact and friction between the cable 8 and the accommodation cavity 11.

[0039] The ball screw nut pair 10 comprises a motor seat 101, a screw rod 102 and a nut 103, the motor seat 101 is fixedly connected with the photovoltaic transformer side body 4, both ends of the screw rod 102 are rotationally connected with the motor seat 101, one side of the nut 103 is fixedly connected with the driving member frame 61, the nut 103 is sleeved on the outer periphery of the screw rod 102 and movably connected with the screw rod 102. Therefore, the height of the folding and unfolding assembly 6 can be adjusted by the ball screw nut pair 10 to limit the unfolding angle of the photovoltaic transformer side body 4. Specifically, when the height of the folding and unfolding assembly 6 is in the upper half position of the photovoltaic transformer side body 4, the cable 8 can be released more to keep the photovoltaic transformer side body 4 at a larger unfolding angle, facilitating heat dissipation, and when the folding and unfolding assembly 6 is in the lower half position of the photovoltaic transformer side body 4, the release of the cable 8 is limited and the photovoltaic transformer side body 4 is kept at a smaller unfolding angle, so that the heat dissipation speed can be controlled.

[0040] The heat dissipation mechanism further comprises a ground contact assembly 9, which can be in contact with the ground before the folding and unfolding assembly 6, avoiding the problem of damage caused by contact with the ground. The ground contact assembly 9 comprises a ground contact shaft 91 and a ground contact seat 92, the ground contact shaft 91 is fixedly connected with the driving member frame 61, the ground contact seat 92 is fixedly connected with the ground contact shaft 91, and the ground contact seat 92 is protrudingly arranged at the outer edge of the driving member frame 61.

[0041] One side of the photovoltaic transformer frame body 1 is hingedly connected with a photovoltaic transformer door body 2, and one side of the photovoltaic transformer door body 2 is fixedly provided with a handle.

[0042] The photovoltaic transformer frame body 1 is a rectangular structure, three groups of photovoltaic transformer side bodies 4 are arranged on the side surface of the photovoltaic transformer frame body 1 and are hingedly connected with the photovoltaic transformer frame body 1, the photovoltaic transformer door body 2 is arranged on the other side surface of the photovoltaic transformer frame body 1 and is hingedly connected with the photovoltaic transformer door body 2, the photovoltaic transformer top body 3 is arranged on the top surface of the photovoltaic transformer frame body 1 and is fixedly connected with the photovoltaic transformer frame body 1, the photovoltaic transformer door body 2, the photovoltaic transformer top body 3 and the photovoltaic transformer side body 4 surround a containing cavity 11, and the containing cavity 11 is arranged in the interior of the photovoltaic transformer frame body 1.

[0043] The guide seats 72 and the guide cylinders 73 are arranged in a circular array inside the guide ring 71 and form a cross structure.

[0044] One side of the photovoltaic transformer side body 4 can be fixedly provided with a servo motor, and the output end of the servo motor is fixedly connected with the screw rod 102 through the motor seat 101, so as to drive the screw rod 102 to rotate and make the screw rod 102 drive the folding and unfolding assembly 6 to move axially along the screw rod 102.

[0045] The ground contact seat 92 is made of high carbon steel, and its hardness reaches 60-75HRC.

[0046] The working principle of the present application is that the cable 8 gradually separates from one side of the electric winch 5 and the other side of the driving gear 67, then the photovoltaic transformer side body 4 is slowly opened by the hinged way of the photovoltaic transformer side body 4 and the photovoltaic transformer frame body 1, so that the accommodation cavity 11 can increase the contact area with the external environment, realize the rapid heat dissipation of the photovoltaic transformer, at the same time, through the gradual tightening of the electric winch 5 or the driven winch 64, the photovoltaic transformer side body 4 can be changed from the inclined state to the state of being placed in close contact with the photovoltaic transformer frame body 1, and the reset of the equipment after heat dissipation can be realized.

[0047] Since the motor seat 101 is fixedly connected with the photovoltaic transformer side body 4, both ends of the lead screw 102 are rotatably connected with the motor seat 101, one side of the nut 103 is fixedly connected with the driving member frame 61, and the nut 103 is sleeved on the outer periphery of the lead screw 102 and movably connected with the lead screw 102, so that the height of the winding and unwinding assembly 6 can be adjusted by the ball screw nut pair 10 to limit the unfolding angle of the photovoltaic transformer side body 4, specifically, when the height of the winding and unwinding assembly 6 is at the upper half position of the photovoltaic transformer side body 4, the cable 8 can be released more and keep the photovoltaic transformer side body 4 at a larger unfolding angle, which is convenient for heat dissipation, when the winding and unwinding assembly 6 is at the lower half position of the photovoltaic transformer side body 4, the cable 8 is limited in release and keeps the photovoltaic transformer side body 4 at a smaller unfolding angle, so that the heat dissipation speed can be controlled.

[0048] The above is only the preferred specific embodiment of the present application, but the protection scope of the present application is not limited thereto, any person skilled in the art can make equivalent replacement or change according to the technical scheme and the inventive concept of the present application within the technical range disclosed by the present application, which should be covered within the protection scope of the present application, and various changes can be made within the knowledge range of the ordinary skilled in the art without departing from the purpose of the present patent.

Claims

1. A high-efficiency heat dissipation structure for a photovoltaic transformer, characterized in that, The system includes a photovoltaic transformer frame (1), a photovoltaic transformer side body (4) hinged to the side wall of the photovoltaic transformer frame (1), a photovoltaic transformer top body (3) fixedly installed on the top of the photovoltaic transformer frame (1), a winding and unwinding assembly (6) connected to one side of the photovoltaic transformer side body (4) via a ball screw nut pair (10), an electric winch (5) fixedly installed on one side of the photovoltaic transformer top body (3), a cable (8) inside the winding and unwinding assembly (6), one end of the cable (8) passing through the winding and unwinding assembly (6) and extending to the outside of the electric winch (5), and the winding and unwinding assembly... The component (6) includes an active component frame (61) and a driven component frame (62). The active component frame (61) and the driven component frame (62) are fixedly connected. An active shaft (66) is rotatably connected inside the active component frame (61). An active gear (67) is sleeved on the outer periphery of the active shaft (66). A driven gear (63) is rotatably connected inside the driven component frame (62). A driven winch (64) is fixedly installed on one side of the driven gear (63). The active gear (67) meshes with the driven gear (63). One end of the cable (8) is wound around the outer periphery of the driven winch (64).

2. The high-efficiency heat dissipation structure for a photovoltaic transformer according to claim 1, characterized in that, It also includes a guide assembly (7), which includes a guide ring (71), a guide seat (72) and a guide cylinder (73). The guide ring (71) is fixedly connected to the photovoltaic transformer frame (1), one side of the guide seat (72) is fixedly connected to the guide ring (71), the guide cylinder (73) is rotatably connected to the guide seat (72), and the guide cylinder (73) is movably connected to the cable (8).

3. The high-efficiency heat dissipation structure for a photovoltaic transformer according to claim 2, characterized in that, The ball screw nut assembly (10) includes a motor base (101), a screw (102), and a nut (103). The motor base (101) is fixedly connected to the photovoltaic transformer side body (4). Both ends of the screw (102) are rotatably connected to the motor base (101). One side of the nut (103) is fixedly connected to the active component frame (61). The nut (103) is sleeved on the outer periphery of the screw (102) and movably connected to the screw (102).

4. The high-efficiency heat dissipation structure for a photovoltaic transformer according to claim 3, characterized in that, It also includes a ground contact assembly (9), which includes a ground contact shaft (91) and a ground contact seat (92). The ground contact shaft (91) is fixedly connected to the active component frame (61), and the ground contact seat (92) is fixedly connected to the ground contact shaft (91). The ground contact seat (92) protrudes from the outer edge of the active component frame (61).

5. The high-efficiency heat dissipation structure for a photovoltaic transformer according to claim 4, characterized in that, A photovoltaic transformer door (2) is hinged to one side of the photovoltaic transformer frame (1), and a handle is fixedly installed on one side of the photovoltaic transformer door (2).

6. The high-efficiency heat dissipation structure for a photovoltaic transformer according to claim 5, characterized in that, The photovoltaic transformer frame (1) is a cuboid structure. The three sets of photovoltaic transformer side bodies (4) are set on the side of the photovoltaic transformer frame (1) and are all hinged to the photovoltaic transformer frame (1). The photovoltaic transformer door (2) is set on the other side of the photovoltaic transformer frame (1) and is hinged to the photovoltaic transformer door (2). The photovoltaic transformer top body (3) is set on the top surface of the photovoltaic transformer frame (1) and is fixedly connected to the photovoltaic transformer frame (1). The photovoltaic transformer door (2), photovoltaic transformer top body (3) and photovoltaic transformer side bodies (4) surround a receiving cavity (11), and the receiving cavity (11) is set inside the photovoltaic transformer frame (1).

7. The high-efficiency heat dissipation structure for a photovoltaic transformer according to claim 6, characterized in that, The guide seat (72) and guide tube (73) are arranged in a ring array inside the guide ring (71) and form a cross-shaped structure.

8. The high-efficiency heat dissipation structure for a photovoltaic transformer according to claim 7, characterized in that, A servo motor can be fixedly installed on one side of the photovoltaic transformer body (4), and the output end of the servo motor passes through the motor base (101) and is fixedly connected to the lead screw (102).

9. The high-efficiency heat dissipation structure for a photovoltaic transformer according to claim 8, characterized in that, The ground contact seat (92) is made of high carbon steel with a hardness of 60-75 HRC.

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