High altitude voltage transformer with protection structure

Abstract

The utility model relates to the field of voltage transformer discloses a high altitude voltage transformer with protection structure, solved, dust particle concentration is high in air, easily adhere to the heat conduction plate surface extending to the outside, dust is accumulated on the heat conduction plate surface and forms the heat insulation layer, causes the heat exchange efficiency of heat conduction plate and air to drop substantially, may exceed the tolerance limit of insulating material, accelerates the insulation ageing, even causes the equipment failure seriously, influences the stable operation of power system's problem, a high altitude voltage transformer with protection structure, including base, the protection shell of fixed connection in base top, the voltage transformer main part of setting in the protection shell inboard, through the variable height track control periodic lifting movement of push plate of guide slot, synchronous completion heat dissipation plate surface dust removal and heat dissipation airflow guide, make the heat conduction coefficient of heat dissipation plate keep stable state, improve the heat dissipation effect.

Description

Technical Field

[0001] This utility model relates to the field of voltage transformers, specifically a high-altitude voltage transformer with a protective structure. Background Technology

[0002] Publication number CN218918594U discloses an outdoor insulated voltage transformer, including a base and a voltage transformer housing. The voltage transformer housing is located on the upper part of the base, and a fan is located on one side of the voltage transformer housing. A heat-conducting block is fixedly installed on the upper part of the base. By installing the heat-conducting block on the upper part of the base and making the bottom of the voltage transformer housing a hollow structure, the voltage transformer housing is mounted on the base, and the heat-conducting block is embedded in the bottom of the voltage transformer housing. As a key device in the power system for voltage transformation, energy metering, and relay protection, the operational stability of the voltage transformer directly affects the safety of the power grid. In high-altitude areas, the low air pressure environment leads to a decrease in air density and a significant reduction in air convection heat dissipation capacity. For example, for every 1000 meters increase in altitude, the air density decreases by about 10%, and the heat dissipation efficiency decreases by 8%-12% accordingly. This makes it difficult to effectively dissipate the heat generated during the operation of the voltage transformer (such as the heat generated by winding copper losses and core hysteresis losses), and the internal temperature rise problem is particularly prominent.

[0003] To address the heat dissipation challenges of voltage transformers in high-altitude areas, existing technologies often employ a heat-conducting plate extending to the outside of the equipment. This approach uses a heat-conducting plate made of a high thermal conductivity material to rapidly conduct heat generated inside the voltage transformer to the outside, where the larger surface area allows for heat exchange with the air, thus achieving heat dissipation. However, the environmental characteristics of high-altitude areas present significant challenges to this heat dissipation solution. High-altitude regions are often accompanied by strong winds, dust storms, and other harsh weather conditions. The high concentration of dust particles in the air easily adheres to the surface of the extended heat-conducting plate. Dust accumulates on the surface of the heat-conducting plate, forming an insulating layer. This significantly reduces the heat exchange efficiency between the heat-conducting plate and the air, potentially exceeding the tolerance limit of the insulating material, accelerating insulation aging, and in severe cases, even causing equipment failure and affecting the stable operation of the power system. Utility Model Content

[0004] The purpose of this invention is to provide a high-altitude voltage transformer with a protective structure. By using this device, the problem of dust accumulating on the surface of the heat-conducting plate to form a heat insulation layer is solved. This leads to a significant decrease in the heat exchange efficiency between the heat-conducting plate and the air, which may exceed the tolerance limit of the insulation material, accelerate insulation aging, and in severe cases even cause equipment failure and affect the stable operation of the power system.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a high-altitude voltage transformer with a protective structure, comprising a base, a protective shell fixedly connected to the top of the base, a voltage transformer body disposed inside the protective shell, a heat dissipation plate fixedly connected to the inner side of the upper surface of the base, heat dissipation holes disposed inside the protective shell, a dustproof net fixedly connected to the inner side of the heat dissipation holes, a rotating mechanism disposed below the base, and a pushing mechanism disposed outside the protective shell.

[0006] The rotating mechanism includes a motor fixedly connected to the bottom of the base, a rotating shaft fixedly connected to the output end of the motor, a rotating disk fixedly connected to the upper end of the rotating shaft, a first guide hole provided inside the rotating disk, a second guide hole provided inside the base, a first guide rod provided inside the first guide hole, a connecting plate fixedly connected to the first guide rod and laterally slidably connected to the inner side of the second guide hole, a telescopic rod fixedly connected to the upper end of the connecting plate, and a push plate fixedly connected to the upper end of the telescopic rod.

[0007] Preferably, the first guide hole has an arc-shaped appearance, and the first guide hole and the first guide rod are fitted with a clearance fit.

[0008] Preferably, the second guide hole has a straight shape.

[0009] Preferably, the central axis of the telescopic rod is perpendicular to the upper surface of the base.

[0010] Preferably, the pushing mechanism includes a support plate fixedly connected to the outer side of the upper surface of the base. The support plate has a guide groove inside. Point a is provided on the outer side of the guide groove near the protective shell, point b is provided on the inner side of the guide groove near the protective shell, point c is provided on the outer side of the guide groove away from the protective shell, point d is provided on the inner side of the guide groove away from the protective shell, and a second guide rod fixedly connected to the push plate is provided on the inner side of the guide groove.

[0011] Preferably, the upper and lower ends of the guide groove have a horizontal straight line shape, and the two ends of the guide groove have an inclined straight line shape.

[0012] Preferably, the horizontal height of guide groove point a is lower than the horizontal height of guide groove point b, and the horizontal height of guide groove point c is higher than the horizontal height of guide groove point d.

[0013] 1. The present invention proposes a high-altitude voltage transformer with a protective structure. By driving four sets of push plates to move synchronously in a centripetal motion through a motor, an airflow counter-current effect is formed, which increases the intensity of cold air turbulence inside the protective shell, reduces the temperature rise of the voltage transformer body, and improves the heat dissipation efficiency compared with traditional natural convection.

[0014] 2. The present invention proposes a high-altitude voltage transformer with a protective structure, which generates a reverse airflow pulse through the negative pressure effect produced when the push plate moves outward, thereby realizing automatic dust removal of the dustproof screen and reducing the amount of dust accumulation.

[0015] 3. The present invention proposes a high-altitude voltage transformer with a protective structure, which controls the periodic lifting and lowering motion of the push plate by the variable height trajectory of the guide groove, simultaneously completing the dust removal and heat dissipation airflow guidance on the surface of the heat sink, keeping the thermal conductivity of the heat sink stable and improving the heat dissipation effect. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall three-dimensional structure of this utility model;

[0017] Figure 2 This is a schematic diagram of the external structure of the first guide hole of this utility model;

[0018] Figure 3 This is a front cross-sectional view of the second guide hole of this utility model;

[0019] Figure 4 This is a schematic diagram of the external structure of the guide groove of this utility model.

[0020] In the diagram: 1. Base; 2. Protective housing; 3. Voltage transformer body; 4. Heat sink; 5. Rotating mechanism; 6. Pushing mechanism; 7. Heat dissipation holes; 8. Dustproof net; 501. Motor; 502. Rotating shaft; 503. Rotating disk; 504. First guide hole; 505. Second guide hole; 506. First guide rod; 507. Connecting plate; 508. Telescopic rod; 509. Push plate; 601. Support plate; 602. Guide groove; 603. Second guide rod. Detailed Implementation

[0021] 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.

[0022] Please see Figures 1-4The present invention provides a technical solution: a high-altitude voltage transformer with a protective structure, comprising a base 1, a protective shell 2 fixedly connected to the top of the base 1, a voltage transformer body 3 disposed inside the protective shell 2, a heat dissipation plate 4 fixedly connected to the inner side of the upper surface of the base 1, heat dissipation holes 7 disposed inside the protective shell 2, a dustproof net 8 fixedly connected to the inner side of the heat dissipation holes 7, a rotating mechanism 5 disposed below the base 1, and a pushing mechanism 6 disposed on the outer side of the protective shell 2.

[0023] The rotating mechanism 5 includes a motor 501 fixedly connected to the bottom of the base 1. The output end of the motor 501 is fixedly connected to a rotating shaft 502. The upper end of the rotating shaft 502 is fixedly connected to a rotating disk 503. The rotating disk 503 has a first guide hole 504 inside. The base 1 has a second guide hole 505 inside. The inner side of the first guide hole 504 is provided with a first guide rod 506. The inner side of the second guide hole 505 is laterally slidably connected to a connecting plate 507 fixedly connected to the first guide rod 506. The upper end of the connecting plate 507 is fixedly connected to a telescopic rod 508. The upper end of the telescopic rod 508 is fixedly connected to a push plate 509. The first guide hole 504 has an arc shape, and the first guide hole 504 and the first guide rod 506 are fitted with a clearance fit. The second guide hole 505 has a straight shape. The central axis of the telescopic rod 508 is perpendicular to the upper surface of the base 1.

[0024] The pushing mechanism 6 includes a support plate 601 fixedly connected to the outer side of the upper surface of the base 1. The support plate 601 has a guide groove 602 inside. Point a is provided on the outer side of the guide groove 602 near the protective shell 2, point b is provided on the inner side of the guide groove 602 near the protective shell 2, point c is provided on the outer side of the guide groove 602 away from the protective shell 2, and point d is provided on the inner side of the guide groove 602 away from the protective shell 2. A second guide rod 603 fixedly connected to the push plate 509 is provided on the inner side of the guide groove 602. The upper and lower ends of the guide groove 602 are horizontal straight lines, and the two ends of the guide groove 602 are inclined straight lines. The horizontal height of point a of the guide groove 602 is lower than the horizontal height of point b of the guide groove 602, and the horizontal height of point c of the guide groove 602 is higher than the horizontal height of point d of the guide groove 602.

[0025] During the heat dissipation process, the starting motor 501 drives the rotating shaft 502 and the rotating disk 503 to rotate, causing the first guide hole 504 to rotate. This causes the first guide rod 506 to be pushed by the edge of the first guide hole 504, causing the connecting plate 507 and the telescopic rod 508 to move inward along the trajectory of the second guide hole 505. This drives the push plate 509 to move inward, causing all four push plates 509 to move towards the center simultaneously. This allows cold air to move into the inner side of the protective shell 2 to dissipate heat from the voltage transformer body 3. Because the four push plates 509 move towards the center simultaneously, the cold air collides with each other, allowing it to move in multiple directions and have more contact surfaces, resulting in better heat dissipation.

[0026] When the push plate 509 moves outward, it generates negative pressure. The air pressure inside the protective shell 2 pushes it outward, causing the dust stuck inside the dustproof net 8 to move outward and reduce blockage.

[0027] Because the horizontal height of point 602a is lower than that of point 602b, and the horizontal height of point 602c is higher than that of point 602d, when the second guide rod 603 moves to point 602a, it will move downwards, causing the push plate 509 to move downwards. This makes the lower surface of the push plate 509 contact the upper surface of the heat sink 4, thus moving the dust on the upper surface of the heat sink 4 outwards and improving the heat dissipation effect of the heat sink 4. When the second guide rod 603 moves back from point 602c, it can move above the guide groove 602, so that the lower surface of the push plate 509 does not contact the upper surface of the heat sink 4.

[0028] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0029] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A high-altitude voltage transformer with a protective structure, comprising a base (1), a protective housing (2) fixedly connected above the base (1), a voltage transformer body (3) disposed inside the protective housing (2), a heat sink (4) fixedly connected to the inner side of the upper surface of the base (1), heat dissipation holes (7) disposed inside the protective housing (2), and a dustproof mesh (8) fixedly connected to the inner side of the heat dissipation holes (7), characterized in that: A rotating mechanism (5) is provided below the base (1), and a pushing mechanism (6) is provided on the outside of the protective shell (2); The rotating mechanism (5) includes a motor (501) fixedly connected to the base (1). The output end of the motor (501) is fixedly connected to a rotating shaft (502). The upper end of the rotating shaft (502) is fixedly connected to a rotating disk (503). The rotating disk (503) has a first guide hole (504) inside. The base (1) has a second guide hole (505) inside. The inner side of the first guide hole (504) is provided with a first guide rod (506). The inner side of the second guide hole (505) is laterally slidably connected to a connecting plate (507) fixedly connected to the first guide rod (506). The upper end of the connecting plate (507) is fixedly connected to a telescopic rod (508). The upper end of the telescopic rod (508) is fixedly connected to a push plate (509).

2. A high-altitude voltage transformer with a protective structure according to claim 1, characterized in that: The first guide hole (504) has an arc-shaped appearance, and the first guide hole (504) and the first guide rod (506) are fitted with a clearance fit.

3. A high-altitude voltage transformer with a protective structure according to claim 1, characterized in that: The second guide hole (505) has a straight shape.

4. A high-altitude voltage transformer with a protective structure according to claim 1, characterized in that: The central axis of the telescopic rod (508) is perpendicular to the upper surface of the base (1).

5. A high-altitude voltage transformer with a protective structure according to claim 1, characterized in that: The pushing mechanism (6) includes a support plate (601) fixedly connected to the outer side of the upper surface of the base (1). The support plate (601) is provided with a guide groove (602). Point a is provided on the outer side of the guide groove (602) near the protective shell (2). Point b is provided on the inner side of the guide groove (602) near the protective shell (2). Point c is provided on the outer side of the guide groove (602) away from the protective shell (2). Point d is provided on the inner side of the guide groove (602) away from the protective shell (2). A second guide rod (603) fixedly connected to the push plate (509) is provided on the inner side of the guide groove (602).

6. A high-altitude voltage transformer with a protective structure according to claim 5, characterized in that: The upper and lower ends of the guide groove (602) are horizontal straight lines, and the two ends of the guide groove (602) are inclined straight lines.

7. A high-altitude voltage transformer with a protective structure according to claim 5, characterized in that: The horizontal height of point a of the guide groove (602) is lower than the horizontal height of point b of the guide groove (602), and the horizontal height of point c of the guide groove (602) is higher than the horizontal height of point d of the guide groove (602).

Images