Layered cooling and heat dissipation mechanism of power transformer

Abstract

The utility model relates to a layered cooling and heat dissipation mechanism of power transformer, including frame, frame is vertical stack's layered structure, every layer of frame includes several U type frame of U type opening faces upwards, and the number of U type frame of frame every layer from top to bottom is increasing in turn, still be provided with axial flow fan in every U type frame, the orientation of axial flow fan air outlet is all same, the both sides of every axial flow fan axial flow fan are all fixed with the horizontal setting pivot, the end of every pivot away from axial flow fan is connected with U type frame rotation, still be installed with locking mechanism of preventing pivot rotation under locking state on every U type frame, the utility model discloses when using, can allocate air volume as needed, improve the heat dissipation efficiency, secondly, can be convenient for adjusting the angle of axial flow fan air outlet, make the air outlet of axial flow fan aim at the heating area on transformer, convenient to use.

Description

Technical Field

[0001] This utility model belongs to the technical field of heat dissipation equipment for power transformers, and in particular relates to a layered cooling and heat dissipation mechanism for power transformers. Background Technology

[0002] Power transformers are the core equipment of power systems. During operation, the iron core and windings inside the transformer will continuously generate heat. Therefore, existing power transformers are usually equipped with heat dissipation mechanisms, such as heat dissipation fins. In addition, during high-load operation in summer, in order to prevent insufficient heat dissipation of the heat dissipation fins, external fans can be used for auxiliary heat dissipation for indoor distribution transformers.

[0003] However, most existing fans are single-layer structures, while the heat-generating areas of transformers are usually unevenly distributed, with the bottom windings generating more heat and the top temperature being relatively lower. Therefore, when using single-layer fans for cooling, the air volume cannot be allocated as needed, resulting in insufficient heat dissipation at the bottom and excessive air volume at the top, which affects the heat dissipation efficiency. Thus, there are still shortcomings and deficiencies in the existing technology. Utility Model Content

[0004] The purpose of this invention is to provide a layered cooling and heat dissipation mechanism for power transformers to solve the problems mentioned in the background art.

[0005] The technical solution adopted by this utility model to solve the above problems is as follows: A layered cooling and heat dissipation mechanism for a power transformer includes a frame, which is a vertically stacked layered structure. Each layer of the frame includes several U-shaped frames with U-shaped openings facing upwards, and the number of U-shaped frames in each layer of the frame increases sequentially from top to bottom. Each U-shaped frame is also equipped with an axial flow fan, and the air outlets of the axial flow fans all face the same direction. Each axial flow fan has a horizontally mounted rotating shaft fixed on both sides of its axial direction. The end of each rotating shaft away from the axial flow fan is rotatably connected to a U-shaped frame. Each U-shaped frame is also equipped with a locking mechanism that prevents the rotating shaft from rotating when locked.

[0006] Furthermore, the end of the rotating shaft away from the axial flow fan is rotatably connected to the U-shaped frame through a groove opened on the inner wall of the U-shaped frame, and the locking mechanism includes a locking screw threadedly connected to the U-shaped frame, with one end of the locking screw passing through the U-shaped frame and located in the groove.

[0007] Furthermore, the U-shaped frames on the rack, from top to bottom, are detachably and fixedly connected to each other between every two adjacent layers.

[0008] Furthermore, vertically distributed sliding grooves are provided on the two opposite inner walls of each U-shaped frame. The bottom end of the sliding groove is connected to the groove, and the top end of the sliding groove is flush with the U-shaped opening of the U-shaped frame. The rotating shaft can slide within the sliding groove.

[0009] Furthermore, multiple axial flow fans are electrically connected to an operation panel mounted on the frame.

[0010] Furthermore, each U-shaped frame at the bottom of the machine frame is fixed with horizontally arranged extension rods at its four corners, and each extension rod is fixed with inclined reinforcing rods between it and the U-shaped frame.

[0011] Furthermore, the bottom surface of the frame is equipped with multiple casters with self-locking function.

[0012] The beneficial effects of this utility model by adopting the above technical solution are as follows: When in use, this invention allows for the use of axial flow fans to blow air through an indoor power transformer, aiding in cooling and heat dissipation. By dividing the frame into layers and increasing the number of U-shaped frames on each layer from top to bottom, the number of axial flow fans can be increased sequentially from top to bottom. The bottom layer of the frame has the most axial flow fans, which can accommodate the area with high heat generation at the bottom windings of the transformer. Conversely, by decreasing the number of axial flow fans on each layer from bottom to top, the top layer of the transformer can accommodate the relatively cooler areas, allowing for on-demand airflow distribution and improved heat dissipation efficiency. Furthermore, the axial flow fans can be flipped and locked relative to the U-shaped frames, facilitating the adjustment of the fan outlet angle to ensure it is aligned with the heat-generating areas of the transformer, thus simplifying its use. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a three-dimensional structural diagram of some of the devices of this utility model; Figure 3 for Figure 2 A schematic diagram of the structure of the middle part of the device; Figure 4 for Figure 3 A schematic diagram of the structure in its split state; Figure 5 This is a schematic diagram of the structure of some parts of the device in the split state; Figure 6 for Figure 5 A magnified structural diagram of part A in the middle.

[0014] Reference numerals in the attached drawings: 1. Rotating shaft; 2. Locking mechanism; 21. Locking screw; 22. Handwheel; 3. Axial flow fan; 4. U-shaped frame; 41. Groove; 42. Slide groove; 43. Receiving groove; 5. Control panel; 6. Extension rod; 7. Reinforcing rod; 8. Caster wheel; 9. Connecting bolt. Detailed Implementation

[0015] To make the objectives, technical solutions, and beneficial effects of this utility model clearer, the embodiments of this utility model will be described in further detail below with reference to the accompanying drawings.

[0016] like Figures 1 to 6 As shown, this utility model provides a layered cooling and heat dissipation mechanism for a power transformer, including a frame. The frame is a vertically stacked layered structure. Each layer of the frame includes several U-shaped frames 4 with U-shaped openings facing upwards. The number of U-shaped frames 4 increases sequentially from top to bottom of each layer of the frame. Specifically, each U-shaped frame 4 includes a horizontal bar and two vertical bars, and the distribution of the multiple layers of U-shaped frames 4 can be as follows: Figure 2 As shown, the rack can be divided into three layers. The top layer has one U-shaped frame 4, the middle layer has two U-shaped frames 4, and the bottom layer has three U-shaped frames 4. Each U-shaped frame 4 is also equipped with an axial flow fan 3, and the air outlets of the axial flow fans 3 all face the same direction.

[0017] Specifically, in use, after aligning this utility model with the indoor power transformer, the axial flow fan 3 can be used to blow on the power transformer to assist in cooling and heat dissipation. By layering the rack and increasing the number of U-shaped frames 4 in each layer from top to bottom, the number of axial flow fans 3 can be increased from top to bottom on the rack. That is, the bottom layer of the rack has the most axial flow fans 3, which can be adapted to the area with high heat generation of the transformer's bottom windings. By decreasing the number of axial flow fans 3 in each layer of the rack from bottom to top, it can be adapted to the relatively low temperature area at the top of the transformer, so as to distribute the air volume as needed and improve the heat dissipation efficiency.

[0018] Secondly, each axial fan 3 has a horizontally mounted rotating shaft 1 fixed on both sides of its axial direction. The end of each rotating shaft 1 away from the axial fan 3 is rotatably connected to the U-shaped frame 4, meaning that the axial fan 3 can rotate around the rotating shaft 1 relative to the U-shaped frame 4. Each U-shaped frame 4 is also equipped with a locking mechanism 2 that prevents the rotating shaft 1 from rotating in the locked state. Specifically, when the locking mechanism 2 is locked, it can prevent the rotating shaft 1 from rotating, thus fixing the position of the axial fan 3. When the locking mechanism 2 is released, the axial fan 3 can rotate around the rotating shaft 1. That is, the axial fan 3 can rotate and lock relative to the U-shaped frame 4. This allows for easy adjustment of the angle of the air outlet of the axial fan 3 according to its own needs, so that the air outlet of the axial fan 3 is aligned with the heat-generating area on the transformer, making it convenient to use.

[0019] Furthermore, such as Figures 1 to 5As shown, the end of the rotating shaft 1 away from the axial flow fan 3 is rotatably connected to the U-shaped frame 4 through a groove 41 opened on the vertical inner wall of the U-shaped frame 4. Specifically, the rotating shaft 1 is a round shaft, and the groove 41 is a round groove adapted to the rotating shaft 1. The locking mechanism 2 includes a locking screw 21 threadedly connected to the U-shaped frame 4. The locking screw 21 is horizontally arranged and parallel to the radial direction of the rotating shaft 1. One end of the locking screw 21 passes through the U-shaped frame 4 and is located in the groove 41. The other end of the locking screw 21 is fixedly equipped with a handwheel 22, which allows for easy rotation of the locking screw 21. 1. Specifically, during use, by rotating the locking screw 21 until the end of the locking screw 21 away from the handwheel 22 is pressed against the rotating shaft 1 in the groove 41, the locking mechanism 2 can be locked to prevent the rotating shaft 1 from rotating. By rotating the locking screw 21 in the opposite direction, the end of the locking screw 21 away from the handwheel 22 is moved away from the rotating shaft 1, and the locking mechanism 2 can be released. At this time, the axial flow fan 3 can rotate around the rotating shaft 1. After the axial flow fan 3 rotates into place, the position of the axial flow fan 3 can be locked again by the locking screw 21.

[0020] Furthermore, such as Figures 1 to 6 As shown, the U-shaped frames 4 of each pair of adjacent layers on the frame are detachably fixed. Specifically, a receiving groove 43 can be vertically opened on the top surface of the horizontal bar of the U-shaped frame 4. Then, multiple connecting bolts 9 can be used to connect the position of the receiving groove 43 on the U-shaped frame 4 to the vertical bar of the lower U-shaped frame 4. That is, after connection, the screw end of the connecting bolt 9 passes through the bottom surface of the receiving groove 43 and is threaded to the vertical bar of the U-shaped frame 4. The head of the connecting bolt 9 abuts against the bottom surface of the receiving groove 43. This makes it easy to assemble and disassemble the U-shaped frames 4 of each pair of adjacent layers on the upper and lower parts of the frame.

[0021] Furthermore, such as Figures 2 to 5 As shown, each U-shaped frame 4 has vertically distributed sliding grooves 42 on its two opposing inner walls. The bottom end of the sliding groove 42 is connected to the groove 41, and the top end of the sliding groove 42 is flush with the U-shaped opening of the U-shaped frame 4. The rotating shaft 1 can slide in the sliding groove 42. Specifically, since the U-shaped frames 4 of each two adjacent layers of the frame can be easily disassembled and assembled, after the U-shaped frame 4 is disassembled, the axial flow fan 3 can be directly taken out and installed from the U-shaped opening of the U-shaped frame 4 by sliding the rotating shaft 1 in the sliding groove 42. This makes it convenient to disassemble, assemble and replace the axial flow fan 3 on the U-shaped frame 4, which is convenient for use.

[0022] Furthermore, such as Figure 1 and Figure 5As shown, multiple axial flow fans 3 are electrically connected to an operation panel 5 mounted on the frame, and the operation panel 5 is electrically connected to a power supply mounted on the frame. Specifically, the operation panel 5 is existing technology and includes a master control switch, a multi-level speed adjustment module, and alarm indicator lights, etc., so as to automatically adjust and control the start / stop and air volume of each layer of axial flow fans 3 according to its own needs.

[0023] Furthermore, such as Figure 1 , Figure 2 and Figure 5 As shown, each of the four corners of each U-shaped frame 4 located at the bottom of the frame is fixed with a horizontally arranged extension rod 6, and each extension rod 6 is fixed with an inclined reinforcing rod 7 between it and the U-shaped frame 4. Specifically, the reinforcing rod 7, the extension rod 6 and the U-shaped frame 4 can form a triangular support structure to improve the structural stability of the bottom of the frame, thereby reducing the risk of tipping over.

[0024] Furthermore, such as Figure 1 As shown, multiple casters 8 with self-locking function are installed on the bottom surface of the frame. Specifically, each extension rod 6 is equipped with the caster 8 at the end away from the reinforcing rod 7. By setting the casters 8, the position of this utility model can be easily adjusted and moved. After being adjusted to the correct position, the position of this utility model can also be fixed by the self-locking function of the casters 8.

[0025] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A layered cooling and heat dissipation mechanism for a power transformer, comprising a frame, characterized in that: The frame is a vertically stacked layered structure. Each layer of the frame includes several U-shaped frames with U-shaped openings facing upwards. The number of U-shaped frames in each layer of the frame increases sequentially from top to bottom. Each U-shaped frame is also equipped with an axial flow fan. The air outlets of the axial flow fans all face the same direction. Each axial flow fan has a horizontally mounted rotating shaft fixed on both sides of its axial direction. The end of each rotating shaft away from the axial flow fan is rotatably connected to a U-shaped frame. Each U-shaped frame is also equipped with a locking mechanism that prevents the rotating shaft from rotating when locked.

2. The layered cooling and heat dissipation mechanism for a power transformer according to claim 1, characterized in that: The end of each rotating shaft away from the axial flow fan is rotatably connected to the U-shaped frame through a groove opened on the inner wall of the U-shaped frame. Each locking mechanism includes a locking screw threadedly connected to the U-shaped frame, with one end of the locking screw passing through the U-shaped frame and located in the groove.

3. The layered cooling and heat dissipation mechanism for a power transformer according to claim 2, characterized in that: The rack consists of detachable and fixed connections between every two adjacent U-shaped frames from top to bottom.

4. The layered cooling and heat dissipation mechanism for a power transformer according to claim 3, characterized in that: Each U-shaped frame has vertically distributed sliding grooves on its two opposite inner walls. The bottom end of the sliding groove is connected to the groove, and the top end of the sliding groove is flush with the U-shaped opening of the U-shaped frame. The rotating shaft can slide within the sliding groove.

5. The layered cooling and heat dissipation mechanism for a power transformer according to claim 1, characterized in that: Multiple axial flow fans share a common electrical connection via an operation panel mounted on the frame.

6. The layered cooling and heat dissipation mechanism for a power transformer according to claim 1, characterized in that: Each U-shaped frame at the bottom of the machine frame is fixed with horizontally arranged extension rods at its four corners, and each extension rod is fixed with inclined reinforcing rods between it and the U-shaped frame.

7. The layered cooling and heat dissipation mechanism for a power transformer according to claim 1, characterized in that: The bottom surface of the frame is equipped with multiple casters with self-locking function.

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