A heat dissipation system for a new energy transformer

Abstract

The present invention relates to the technical field of transformers, and more specifically to a heat dissipation system for a new energy transformer, comprising a transformer, the transformer comprising a housing and a plurality of iron core windings, each of the iron core windings extending in an up-down direction, a heat exchange tube being spirally wound around the periphery of each iron core winding, the upper end of the heat exchange tube being an oil inlet for supplying hydraulic oil in the housing into the heat exchange tube, the bottom of the housing being provided with an oil inlet pipe and an oil outlet pipe connecting the inside and outside of the housing, each iron core winding corresponding to an oil inlet pipe and an oil outlet pipe, a circulation drive mechanism being provided on the lower side of the housing, the circulation drive mechanism being respectively connected to the corresponding oil inlet pipe and oil outlet pipe, so as to drive the hydraulic oil in the housing into the heat exchange tube from the upper end, then into the circulation drive mechanism from the lower end of the heat exchange tube through the oil outlet pipe, and then into the housing from the circulation drive mechanism through the oil inlet pipe. The present invention solves the technical problem of uneven flow of hydraulic oil in existing transformers, resulting in poor heat dissipation effect.

Description

Technical Field

[0001] The present invention relates to the technical field of transformers, and in particular to a heat dissipation system for a new energy transformer. Background Art

[0002] In existing technology, new energy transformers are typically filled with hydraulic oil. This configuration not only protects the transformer's insulation but also helps dissipate heat, thereby improving the transformer's heat dissipation performance. However, due to the low fluidity of the hydraulic oil inside the transformer and the high temperature of the hydraulic oil near the core, poor flow can hinder the transformer's heat dissipation.

[0003] In the prior art, an oil outlet and an oil inlet are usually provided at the bottom of the transformer casing, and then a circulation drive pump is connected between the oil inlet and the oil outlet. The circulation drive pump drives the hydraulic oil inside the transformer to enter the circulation drive pump from the oil outlet, and then enter the transformer from the circulation drive pump through the oil inlet, thereby improving the circulation flow of the hydraulic oil in the transformer and further improving the heat dissipation performance of the transformer.

[0004] However, the above-mentioned means of improving the heat dissipation effect of the transformer is that the circulation drive pump can only circulate the hydraulic oil at the bottom of the transformer from the outside of the transformer, resulting in uneven flow of the hydraulic oil inside the transformer. As a result, there are still local high temperatures inside the transformer, especially in the iron core and its windings, which are the main heat-generating components. As a result, the outer periphery of the iron core and its windings cannot dissipate heat quickly and in a timely manner. Summary of the Invention

[0005] In order to overcome the shortcomings of the existing technology, the present invention proposes a heat dissipation system for a new energy transformer to solve the technical problems in the existing technology that the hydraulic oil in the transformer flows unevenly, causing local high temperature in the transformer and poor heat dissipation effect.

[0006] The heat dissipation system of a new energy transformer of the present invention adopts the following technical solution:

[0007] A heat dissipation system for a new energy transformer includes a transformer, the transformer including a shell and a plurality of iron core windings arranged in the shell, the iron core windings are arranged side by side and at intervals, and the iron core windings extend in the up and down directions, and the periphery of each iron core winding is spirally wound with a heat exchange tube from top to bottom, and the bottom of the shell is provided with an oil inlet pipe and an oil outlet pipe communicating with the inside and outside of the shell, each iron core winding corresponds to an oil inlet pipe and an oil outlet pipe, the lower end of each heat exchange pipe is an oil outlet end, and is respectively connected to the corresponding oil outlet pipe, and the lower side of the shell is provided with A circulation drive mechanism is provided with each iron core winding corresponding to each other, and the circulation drive mechanism is respectively connected with the corresponding oil inlet pipe and oil outlet pipe to drive the hydraulic oil in the shell into the heat exchange tube from the upper end of the heat exchange tube, and then enters the circulation drive mechanism from the lower end of the heat exchange tube through the oil outlet pipe, and then enters the shell from the circulation drive mechanism through the oil inlet pipe. A mixing structure is provided in the heat exchange tube, and the mixing structure is a strip structure and extends along the length direction of the heat exchange tube. The mixing structure includes spiral blades, and the spiral blades mix the hydraulic oil entering the heat exchange tube.

[0008] Furthermore, the upper end of each heat exchange tube is located at the upper end of the core winding and cantilevers toward the radial side of the core winding. The upper end of the heat exchange tube is an oil inlet end for supplying hydraulic oil in the shell into the heat exchange tube.

[0009] Furthermore, the spiral blades are arranged in sections, and the spiral blades include first blades and second blades that are alternately arranged, both of the first blades and the second blades are spiral structures, and the first blades and the second blades are staggered along the circumference of the heat exchange tube between adjacent ends.

[0010] Furthermore, the adjacent ends of the first blade and the second blade are circumferentially staggered by 90°, so that the adjacent ends of the first blade and the second blade are arranged in a cross shape.

[0011] Furthermore, the cross-section of the heat exchange tube perpendicular to the axial direction is a rectangle, and one side of the rectangle is in contact with the outer peripheral surface of the core winding.

[0012] Furthermore, the outer edge of the spiral blade fits against the inner wall of the heat exchange tube.

[0013] Furthermore, the circulation drive mechanism includes a pump pipe and a drive motor connected to the pump pipe, the pump pipe has a liquid inlet end and a liquid outlet end, the liquid inlet end is connected to the corresponding oil outlet pipe, and the liquid outlet end is connected to the corresponding oil inlet pipe. The drive motor is used to drive the pump pipe to rotate to drive the hydraulic oil in the outer shell through the heat exchange pipe and the oil outlet pipe, and then enter the outer shell from the oil inlet pipe.

[0014] Furthermore, the upper end of the iron core winding is connected to an upper connecting frame, and the lower end is connected to a lower bracket, and the multiple iron core windings are fixed in the shell through the lower bracket.

[0015] Furthermore, a plurality of pull rods are connected between the upper connecting frame and the lower bracket, and the plurality of pull rods are located on the periphery of the iron core winding.

[0016] Furthermore, a heat sink is provided on the outer periphery of the shell, and a plurality of conductive heads are provided on the top of the shell.

[0017] The beneficial effects of the present invention are as follows: a heat dissipation system of a new energy transformer of the present invention utilizes a circulation drive mechanism and a heat exchange tube spirally wound around the periphery of the core winding to draw hydraulic oil away from the core winding into the heat exchange tube, thereby accelerating the circulation of the hydraulic oil around the core winding, utilizing the hydraulic oil with a lower temperature away from the core winding to cool the periphery of the core winding, thereby improving the heat dissipation efficiency of the core winding.

[0018] In addition, by setting a mixing structure in the heat exchange tube, the mixing structure includes spiral blades, which mix the hydraulic oil entering the heat exchange tube, thereby promoting the mixing of the hydraulic oil on the side of the heat exchange tube close to the iron core winding and the hydraulic oil on the side away from the iron core winding, ensuring the uniformity of the hydraulic oil temperature in the heat exchange tube, and thus accelerating the heat dissipation of the iron core winding. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work. Those skilled in the art should understand that these drawings are not necessarily drawn to scale.

[0020] Figure 1 It is a three-dimensional schematic diagram of an embodiment of a heat dissipation system for a new energy transformer of the present invention.

[0021] Figure 2 This is an exploded diagram of an embodiment of a heat dissipation system for a new energy transformer of the present invention.

[0022] Figure 3 This is a side view of an embodiment of a heat dissipation system for a new energy transformer of the present invention.

[0023] Figure 4 for Figure 3 Middle AA section view.

[0024] Figure 5 for Figure 4 3D schematic diagram of .

[0025] Figure 6 for Figure 5Enlarged schematic diagram of part B in the middle.

[0026] Figure 7 This is a three-dimensional schematic diagram of the heat exchange tubes and hybrid structure in one embodiment of a heat dissipation system for a new energy transformer of the present invention (only a portion of the hybrid structure is shown).

[0027] Figure 8 for Figure 7 Enlarged schematic diagram of part C in the middle.

[0028] In the figure: 100, transformer; 110, casing; 111, heat sink; 120, conductive head; 130, upper connecting frame; 140, core winding; 150, lower bracket; 160, oil outlet pipe; 161, connecting pipe; 162, pump pipe; 163, drive motor; 164, oil inlet pipe; 200, heat exchange pipe; 210, oil outlet end; 230, oil inlet end; 240, mixing structure; 241, spiral blade; 242, second blade; 243, first blade. DETAILED DESCRIPTION

[0029] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0030] The serial numbers assigned to components herein, such as "first," "second," etc., are used solely to distinguish the objects being described and do not convey any sequential or technical meaning. References to "connection" and "coupling" herein, unless otherwise specified, include both direct and indirect connections (couplings). In the description of the present invention, it should be understood that the terms "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," and the like, indicating positions or relationships, are based on those shown in the accompanying drawings and are intended solely to facilitate the description of the present invention and simplify the description. They are not intended to indicate or imply that the device or element referred to must have, be constructed, or operate in a specific orientation, and therefore should not be construed as limiting the present invention.

[0031] In the present invention, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. Furthermore, a first feature being "above," "above," and "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is at a higher level than the second feature. A first feature being "below," "below," and "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is at a lower level than the second feature.

[0032] An embodiment of a heat dissipation system for a new energy transformer of the present invention is as follows: Figures 1 to 8 As shown, the heat dissipation system of the new energy transformer includes a transformer 100, which includes a shell 110 and a plurality of core windings 140 arranged in the shell 110. The shell 110 is filled with hydraulic oil, and each core winding 140 is immersed in the hydraulic oil. In this embodiment, there are three core windings 140, and the three core windings 140 are arranged side by side and spaced apart in the left-right direction, and each core winding 140 extends in the up-down direction. The upper ends of the three core windings 140 are connected to the upper connecting frame 130, and the lower ends are connected to the lower bracket 150. The three core windings 140 are fixed in the shell 110 by the lower bracket 150. The outer periphery of the shell 110 is provided with heat sinks 111, and the top of the shell 110 is provided with a plurality of conductive heads 120.

[0033] In the present invention, a heat exchange tube 200 is spirally wound around the periphery of each core winding 140 from top to bottom. The upper end of each heat exchange tube 200 is located at the upper end of the core winding 140 and is cantilevered toward the radial side of the core winding 140. The upper end of the heat exchange tube 200 is an oil inlet end 230 for supplying hydraulic oil in the shell 110 to enter the heat exchange tube 200. The bottom of the shell 110 is provided with an oil inlet pipe 164 and an oil outlet pipe 160 that communicate with the inside and outside of the shell 110. Each core winding 140 is correspondingly provided with an oil inlet pipe 164 and an oil outlet pipe 160. The lower end of each heat exchange tube 200 is the oil outlet end 210, and is respectively connected to the corresponding oil outlet pipe 160. The lower side of the shell 110 is provided with a circulation drive mechanism corresponding to each iron core winding 140. The circulation drive mechanism is respectively connected to the corresponding oil inlet pipe 164 and the oil outlet pipe 160 to drive the hydraulic oil in the shell 110 into the heat exchange tube 200 from the upper end, and then enters the circulation drive mechanism from the lower end of the heat exchange tube 200 through the oil outlet pipe 160, and then enters the shell 110 from the circulation drive mechanism through the oil inlet pipe 164. The present invention utilizes a circulation drive mechanism and a heat exchange tube 200 spirally wound around the periphery of the core winding 140 to draw hydraulic oil away from the core winding 140 into the heat exchange tube 200. This can accelerate the circulation of the hydraulic oil around the core winding 140, and utilize the hydraulic oil with a lower temperature away from the core winding 140 to cool the periphery of the core winding 140, thereby improving the heat dissipation efficiency of the core winding 140.

[0034] In this embodiment, the circulation drive mechanism includes a pump pipe 162 and a drive motor 163 connected to the pump pipe 162. The pump pipe 162 has a liquid inlet end and a liquid outlet end. The liquid inlet end is connected to the corresponding oil outlet pipe 160 through a connecting pipe 161, and the liquid outlet end is connected to the corresponding oil inlet pipe 164. The drive motor 163 is used to drive the pump pipe 162 to rotate, so as to drive the hydraulic oil in the outer shell 110 through the heat exchange pipe 200 and the oil outlet pipe 160, and then enter the outer shell 110 from the oil inlet pipe 164.

[0035] In this embodiment, a mixing structure 240 is provided in the heat exchange tube 200. The mixing structure 240 is a strip structure and extends along the length direction of the heat exchange tube 200. The mixing structure 240 includes spiral blades 241. The spiral blades 241 mix the hydraulic oil entering the heat exchange tube 200, thereby promoting the mixing of the hydraulic oil on the side of the heat exchange tube 200 close to the iron core winding 140 and the hydraulic oil on the side away from the iron core winding 140, thereby accelerating the heat dissipation of the iron core winding 140.

[0036] In this embodiment, the spiral blades 241 are arranged in sections and include alternating first blades 243 and second blades 242. The first blades 243 and second blades 242 both have a spiral structure, and the adjacent ends of the first blades 243 and second blades 242 are staggered along the circumference of the heat exchange tube 200. The adjacent ends of the first blades 243 and second blades 242 are staggered 90 degrees in the circumferential direction, so that the adjacent ends of the first blades 243 and second blades 242 are arranged in a cross pattern.

[0037] In this embodiment, to increase the contact area between the heat exchange tube 200 and the outer periphery of the core winding 140, the heat exchange tube 200 has a rectangular cross-section, with one side of the rectangle in contact with the outer periphery of the core winding 140. Accordingly, the outer edge of the spiral blade 241 is in contact with the inner wall of the heat exchange tube 200.

[0038] The heat dissipation system of the new energy transformer of the present invention is that during the operation of the transformer 100, the temperature of the periphery of the three core windings 140 will increase, and the three sets of circulation drive mechanisms will work. The drive motor 163 drives the pump pipe 162 to perform suction work, driving the hydraulic oil in the shell 110 to enter the heat exchange tube 200 from the oil inlet end 230 of the heat exchange tube 200, and then the hydraulic oil in the heat exchange tube 200 enters the pump pipe 162 through the oil outlet pipe 160 and the connecting pipe 161, and then enters the shell 110 through the pump pipe 162 and the oil inlet pipe 164, thereby accelerating the circulation of the hydraulic oil in the shell 110, thereby accelerating the circulation of the hydraulic oil around the core winding 140, and utilizing the hydraulic oil with a lower temperature away from the core winding 140 to cool the periphery of the core winding 140, thereby improving the heat dissipation efficiency of the core winding 140.

[0039] When the hydraulic oil in the housing 110 enters the heat exchange tube 200, the static mixing action of the mixing structure 240 causes the hydraulic oil near the core winding 140 and the hydraulic oil away from the core winding 140 to mix. Furthermore, because the spiral blades 241 are segmented, when the hydraulic oil passes through the intersection of the first blade 243 and the second blade 242, the hydraulic oil passing through this intersection is cut and mixed due to the cross-shaped arrangement of the opposing ends of the first blade 243 and the second blade 242. This improves the mixing effect of the hydraulic oil and prevents the hydraulic oil near the core winding 140 in the heat exchange tube 200 from overheating. Because the first blade 243 and the second blade 242 are cross-connected at the adjacent ends, the hydraulic oil inside the heat exchange tube 200 will be broken up, thereby avoiding laminar flow in the heat exchange tube 200 and preventing boundary layer phenomenon in the heat exchange tube 200, making the flow of the hydraulic oil turbulent, which helps to improve the uniformity of the hydraulic oil temperature in the heat exchange tube 200.

[0040] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A heat dissipation system for a new energy transformer, comprising a transformer (100), wherein the transformer (100) comprises a housing (110) and a plurality of iron core windings (140) disposed in the housing (110), wherein the iron core windings (140) are arranged side by side and spaced apart, and each iron core winding (140) extends in an up-down direction, and is characterized in that: The outer periphery of each iron core winding (140) is spirally wound with a heat exchange tube (200) from top to bottom. The bottom of the shell (110) is provided with an oil inlet pipe (164) and an oil outlet pipe (160) that communicate with the inside and outside of the shell (110). Each iron core winding (140) corresponds to an oil inlet pipe (164) and an oil outlet pipe (160). The lower end of each heat exchange tube (200) is respectively communicated with the corresponding oil outlet pipe (160). The lower side of the shell (110) is provided with a circulation drive mechanism corresponding to each iron core winding (140). The circulation drive mechanism is respectively connected to the corresponding oil inlet pipe (164) and the oil outlet pipe (160). The heat exchange tube (200) is connected to the heat exchange tube (200) to drive the hydraulic oil in the shell (110) to enter the heat exchange tube (200) from the upper end thereof, then enter the circulation drive mechanism from the lower end of the heat exchange tube (200) through the oil outlet pipe (160), and then enter the shell (110) from the circulation drive mechanism through the oil inlet pipe (164). A mixing structure (240) is provided in the heat exchange tube (200). The mixing structure (240) is a strip-shaped structure and extends along the length direction of the heat exchange tube (200). The mixing structure (240) includes a spiral blade (241). The spiral blade (241) mixes the hydraulic oil entering the heat exchange tube (200); The upper end of each heat exchange tube (200) is located at the upper end of the iron core winding (140) and is cantilevered toward one radial side of the iron core winding (140). The upper end of the heat exchange tube (200) is an oil inlet end (230) for supplying hydraulic oil in the housing (110) into the heat exchange tube (200). The spiral blades (241) are arranged in sections, and the spiral blades (241) include first blades (243) and second blades (242) that are alternately arranged. The first blades (243) and the second blades (242) are both spiral structures, and the first blades (243) and the second blades (242) are staggered along the circumference of the heat exchange tube (200) between adjacent ends.

2. The heat dissipation system of the new energy transformer according to claim 1 is characterized in that: The adjacent ends of the first blade (243) and the second blade (242) are circumferentially staggered by 90°, so that the adjacent ends of the first blade (243) and the second blade (242) are arranged in a cross pattern.

3. The heat dissipation system of the new energy transformer according to claim 2 is characterized in that: The cross-sectional shape of the heat exchange tube (200) perpendicular to the axial direction is a rectangle, and one side of the rectangle is in contact with the outer peripheral surface of the iron core winding (140).

4. The heat dissipation system of the new energy transformer according to claim 3 is characterized in that: The outer edge of the spiral blade (241) is in contact with the inner wall of the heat exchange tube (200).

5. The heat dissipation system for a new energy transformer according to any one of claims 1 to 4, characterized in that: The circulation drive mechanism comprises a pump pipe (162) and a drive motor (163) connected to the pump pipe (162). The pump pipe (162) has a liquid inlet end and a liquid outlet end. The liquid inlet end is connected to the corresponding oil outlet pipe (160), and the liquid outlet end is connected to the corresponding oil inlet pipe (164). The drive motor (163) is used to drive the pump pipe (162) to rotate, so as to drive the hydraulic oil in the housing (110) to pass through the heat exchange pipe (200) and the oil outlet pipe (160), and then enter the housing (110) from the oil inlet pipe (164).

6. The heat dissipation system of the new energy transformer according to claim 5, characterized in that: The upper end of the iron core winding (140) is connected to an upper connecting frame (130), and the lower end is connected to a lower bracket (150). The plurality of iron core windings (140) are fixed in the housing (110) via the lower bracket (150).

7. The heat dissipation system of the new energy transformer according to claim 6, characterized in that: A plurality of pull rods are connected between the upper connecting frame (130) and the lower bracket (150), and the plurality of pull rods are located on the periphery of the iron core winding (140).

8. The heat dissipation system of the new energy transformer according to claim 7, characterized in that: A heat sink (111) is provided on the outer periphery of the housing (110), and a plurality of conductive heads (120) are provided on the top of the housing (110).

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