Heat dissipation type high-capacity dry-type transformer
By embedding a heat sink in the outer wall of the main body of a large-capacity dry transformer, and combining the design of a heat conduction groove, a heat suction fan and a bottom air intake, the aging problem caused by heat accumulation in the transformer is solved, and a more efficient heat dissipation effect is achieved, and the service life of the equipment is extended.
Patent Information
- Application Number
- CN202411782607.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-05
- Publication Date
- 2025-03-14
AI Technical Summary
During the operation of existing large-capacity dry transformers, heat accumulation occurs due to the resistance loss generated by the current passing through the internal preset coil, which leads to aging of the coil, affecting the normal operation of the transformer.
A heat dissipation large capacity dry transformer is designed. By embedding a heat sink in the outer wall of the transformer main body, and a heat conduction groove and a heat suction fan are installed on the top plate, combined with the bottom air inlet on the bottom plate, the heat dissipation and discharge of heat can be achieved quickly.
Through this design, the heat dissipation of the transformer can be effectively improved, the preset coil can be avoided accumulation of heat, the service life of the transformer can be extended, and the normal operation can be ensured.
Smart Images
Figure CN119626718A_ABST
Abstract
Description
Technical Field
[0001] The invention relates to the technical field of dry-type transformers, and in particular to a heat-dissipating large-capacity dry-type transformer. Background Art
[0002] Large-capacity dry-type transformers are a type of power equipment widely used in modern power systems. They are mainly used in places with high load level requirements and are widely used in high-rise buildings, commercial centers, industrial plants, and public facilities.
[0003] Large-capacity dry-type transformers use the principle of electromagnetic induction to achieve electrical energy transmission and voltage conversion. When alternating current passes through the primary winding, an alternating magnetic field is generated in the iron core. This alternating magnetic field is transmitted to the secondary winding through the iron core, inducing an electromotive force in the secondary winding to achieve a voltage transformation effect.
[0004] At present, during the operation of existing large-capacity dry-type transformers, when current passes through the internal preset coil in the transformer shell body, resistance loss will be generated. These losses will be released in the form of heat and thermal energy, causing the temperature of the internal preset coil to rise. If these heat and thermal energy cannot be discharged in time and accumulate in the transformer shell body for a long time, it will cause the internal preset coil to age, which will in turn affect the normal operation of the large-capacity dry-type transformer. Summary of the invention
[0005] In view of the defects of the above-mentioned prior art, the main purpose of the present invention is to overcome the shortcomings of the prior art, and discloses a heat dissipation type large-capacity dry-type transformer, including a transformer body, and also including a bottom plate, a heat sink, a top plate, a top bracket and a heat exhaust cover, the transformer body is arranged on the bottom plate, and a bottom air inlet is arranged on the bottom plate; the top plate is arranged on the top of the transformer body, and a plurality of heat conduction grooves are provided on the top plate, the heat sink ring is arranged on the side wall of the transformer body, the heat exhaust cover is arranged on the top plate through the top bracket, and a gap is arranged between the heat exhaust cover and the top plate; the heat exhaust cover includes a cover body and a heat extraction fan arranged in the cover body, and a heat exhaust hole connected to the heat exhaust cover is arranged on the top bracket.
[0006] Furthermore, protective nets are arranged on the top and bottom of the cover body.
[0007] Furthermore, the heat sink is provided with a plurality of vertically arranged penetrating heat transfer holes.
[0008] Furthermore, 12 heat sinks are arranged in a circle.
[0009] Furthermore, the top-view cross-section of the bottom air inlet is a long arc-shaped through-opening, and the bottom air inlet vertically penetrates the bottom plate and is vertically aligned with the heat sink.
[0010] Furthermore, the heat-conducting grooves are arranged in an array, and the surfaces of the heat-conducting grooves are coated with a heat-conducting coating.
[0011] Furthermore, the thermal conductive coating is an organic silicone coating with a thickness of 200 to 300 μm.
[0012] Furthermore, a thermally conductive insulating layer is attached to the surface of the heat sink.
[0013] Furthermore, the thermally conductive insulating layer is fixed by means of organic silicone adhesive.
[0014] Furthermore, the thickness of the thermally conductive insulating layer is 500-600 μm.
[0015] Beneficial effects achieved by the present invention:
[0016] 1. The present invention embeds a heat sink with a heat transfer hole in the outer wall of the transformer body, then arranges a heat conduction groove with a heat conductive coating on the top plate, and arranges a top bracket with a heat extraction and heat dissipation structure on the top. When current passes through the internal preset coil in the transformer body, resistance loss will be generated, and these losses will be released in the form of heat and thermal energy, and then the heat will be fully and quickly conducted out through the heat sink. Combined with the heat transfer holes and the heat dissipation and heat extraction structure on the top, the heat accumulated between each heat sink can be quickly dissipated and discharged upward, avoiding the aging phenomenon caused by the heat accumulation in the internal preset coil in the transformer body, improving the heat dissipation of the large-capacity dry-type transformer itself, and thus ensuring the normal operation of the large-capacity dry-type transformer.
[0017] 2. The present invention provides a bottom air inlet structure with a circumferential arrangement and matching on the bottom plate. When heat dissipation and heat extraction operations are performed, if there is some residual heat, the cold air at the bottom will quickly and specifically flow into each heat sink, thereby quickly and effectively exchanging the residual heat between each heat sink, further improving the heat dissipation of the large-capacity dry-type transformer. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] Figure 1 It is a stereoscopic diagram of the overall structure of the present invention from a first viewing angle;
[0019] Figure 2 It is a stereoscopic diagram of the overall structure of the present invention from a second viewing angle;
[0020] Figure 3 It is a schematic front view of the overall structure of the present invention;
[0021] Figure 4 For the present invention Figure 3 Partial cross-section at Y in the middle;
[0022] Figure 5The schematic diagram of the overall structure of the present invention is a top view perspective view.
[0023] The reference numerals are as follows:
[0024] 1. Transformer housing body, 2. Bottom plate, 20. Bottom air inlet, 21. Mounting frame, 22. Mounting hole, 3. Heat sink, 31. Heat transfer hole, 32. Thermal insulation layer, 4. Top plate, 41. Lifting ring, 5. Heat conduction groove, 51. Thermal conductive coating, 6. Top bracket, 61. Heat exhaust hole, 7. Heat exhaust cover, 71. Top protective net, 72. Heat extraction fan, 73. Bottom protective net. DETAILED DESCRIPTION
[0025] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.
[0026] A heat dissipation type large-capacity dry-type transformer includes a transformer body 1, a bottom plate 2, a heat sink 3, a top plate 4, a top bracket 6 and a heat exhaust cover 7. The transformer body 1 is arranged on the bottom plate 2, and a bottom air inlet 20 is arranged on the bottom plate 2; the top plate 4 is arranged on the top of the transformer body 1, and a plurality of heat conduction grooves 5 are provided on the top plate 4. The heat sink 3 is arranged on the side wall of the transformer body 1, and the heat exhaust cover 7 is arranged on the top plate 4 through the top bracket 6, and a gap is arranged between the heat exhaust cover 7 and the top plate 4; the heat exhaust cover 7 includes a cover body and a heat extraction fan 72 arranged in the cover body, and a heat exhaust hole 61 connected to the heat exhaust cover 7 is arranged on the top bracket 6. Among them, the heat exhaust hole 61 vertically penetrates the top bracket 6, and the heat exhaust hole 61 and the heat exhaust cover 7 are both vertically aligned with the transformer body 1. Combined with the suction force of the heat extraction fan 72 from bottom to top, the heat accumulated in the heat conduction groove 5 is quickly extracted and discharged upward.
[0027] In one embodiment, the cover body is a hollow cavity, the top protective net 71 is arranged at the top of the heat extraction fan 72, and the bottom protective net 73 is arranged at the bottom of the heat extraction fan 72. The filter elements of the top protective net 71 and the bottom protective net 73 are both made of non-woven fabric, which is waterproof and prevents external dust particles from entering the heat extraction fan 72.
[0028] In one embodiment, a plurality of vertically arranged and penetrating heat transfer holes 31 are provided on the heat sink 3. Preferably, there are nine vertically arranged heat transfer holes 31 penetrating the heat sink 3, and the heat sink 3 is made of red copper.
[0029] In one embodiment, the heat sink 3 is twelve and arranged in a circle and embedded in the outer wall of the transformer body 1. Preferably, it is embedded in the outer shell of the transformer body 1, and the insertion part is preset with an insulating, sealed and waterproof cover structure made of rubber material, which has excellent heat conduction efficiency and is durable.
[0030] In one embodiment, the top cross-section of the bottom air inlet 20 is a long arc-shaped through-hole, and the bottom air inlet 20 vertically penetrates the bottom plate 2 and is vertically aligned with the heat sink 3, so as to realize effective and rapid heat exchange of residual heat between each heat sink.
[0031] In one embodiment, the array of heat-conducting grooves 5 is opened at the top of the top plate 4 and is a transverse long strip inner groove. Combined with the top plate 4 made of aluminum alloy, the heat accumulated between the heat sinks 3 is quickly transferred upward to each heat-conducting groove 5. The inner wall of the heat-conducting groove 5 is provided with a thermal conductive coating.
[0032] Specifically, the thermal conductive coating 51 is evenly coated along the inner groove wall of the thermal conductive groove 5. The thermal conductive coating 51 is an organic silicone coating with a thickness of two hundred to three hundred microns. The organic silicone coating has excellent thermal conductivity and heat dissipation. Combined with the suction force of the heat extraction fan 72 from bottom to top, the heat accumulated in the thermal conductive groove 5 can be quickly conducted upward and quickly extracted to avoid accumulation.
[0033] In one embodiment, a heat-conducting insulating layer 32 is attached to the heat sink 3. Specifically, the heat-conducting insulating layer 32 is bonded along the surface of the heat sink 3, and the heat-conducting insulating layer 32 is firmly bonded to the heat sink 3 by an adhesive made of organic silicone. The adhesive made of organic silicone has excellent thermal conductivity and is resistant to high temperatures without debonding.
[0034] The thickness of the heat-conducting insulating layer 32 is 500 to 600 microns. The heat-conducting insulating layer 32 is made of rubber and filled with silicon carbide filler, which not only improves the electrical insulation of the heat sink 3 itself, but also improves its thermal conductivity efficiency.
[0035] In one embodiment, a mounting frame 21 is disposed on the bottom plate 2 , and a mounting hole 22 is formed on the mounting frame 21 .
[0036] In one embodiment, a hanging ring 41 is provided on the top plate 4 .
[0037] Working method: When current passes through the internal preset coil in the transformer body 1, resistance loss will be generated, and these losses will be released in the form of heat and thermal energy (this is the existing technology). Then the heat generated in the transformer body 1 will be fully and quickly conducted out through each heat sink 3. Combined with the heat transfer hole 31 and the effect of the natural upward flow of heat, the heat accumulated between each heat sink 3 will be transferred upward to the heat conduction groove 5. At the same time, the upper heat extraction fan 72 will also be powered on and start to generate a suction force from bottom to top. This suction force, combined with the thermal conductive coating 51, can quickly draw the heat transferred to the heat conduction groove 5 upward, and then the heat is quickly dissipated upward through the heat exhaust hole 61 and the heat exhaust cover 7 to avoid heat accumulation in the internal preset coil in the transformer body 1 and cause aging, thereby improving the heat dissipation of the large-capacity dry-type transformer itself, thereby ensuring the normal operation of the large-capacity dry-type transformer.
[0038] In addition, when the heat accumulated between each heat sink 3 is transferred upward to the heat conduction groove 5, the cold air flow at the bottom of the base plate 2 will quickly and specifically enter between each heat sink 3 through the bottom air inlet 20, further realizing effective and rapid heat exchange of the residual heat between each heat sink, further improving the heat dissipation of the large-capacity dry-type transformer itself.
[0039] The above are only preferred embodiments of the present invention and are not intended to limit the scope of implementation of the present invention. If the present invention is modified or replaced by equivalents without departing from the spirit and scope of the present invention, they should all be included in the protection scope of the claims of the present invention.
Claims
1. A heat dissipation type large capacity dry-type transformer, comprising a transformer body, characterized in that: It also includes a bottom plate, a heat sink, a top plate, a top bracket and a heat exhaust cover, the transformer body is arranged on the bottom plate, and a bottom air inlet is arranged on the bottom plate; the top plate is arranged on the top of the transformer body, and a plurality of heat conduction grooves are provided on the top plate, the heat sink ring is arranged on the side wall of the transformer body, the heat exhaust cover is arranged on the top plate through the top bracket, and a gap is arranged between the heat exhaust cover and the top plate; the heat exhaust cover includes a cover body and a heat extraction fan arranged in the cover body, and a heat exhaust hole connected to the heat exhaust cover is arranged on the top bracket.
2. A heat dissipation type large capacity dry-type transformer according to claim 1, characterized in that: Protective nets are arranged on the top and bottom of the cover body.
3. A heat dissipation type large capacity dry-type transformer according to claim 1, characterized in that: The heat sink is provided with a plurality of vertically arranged penetrating heat transfer holes.
4. A heat dissipation type large capacity dry-type transformer according to claim 1, characterized in that: The heat sinks are arranged in a circle and are 12 in number.
5. A heat dissipation type large capacity dry-type transformer according to claim 1, characterized in that: The top-view cross-section of the bottom air inlet is a long arc-shaped through-hole, and the bottom air inlet vertically penetrates the bottom plate and is vertically aligned with the heat sink.
6. A heat dissipation type large capacity dry-type transformer according to claim 1, characterized in that: The heat-conducting grooves are arranged in an array, and the surfaces of the heat-conducting grooves are coated with a heat-conducting coating.
7. A heat dissipation type large capacity dry-type transformer according to claim 6, characterized in that: The thermal conductive coating is an organic silicone coating with a thickness of 200 to 300 μm.
8. A heat dissipation type large capacity dry-type transformer according to claim 1, characterized in that: A heat-conducting insulating layer is attached to the surface of the heat sink.
9. A heat dissipation type large capacity dry-type transformer according to claim 8, characterized in that: The heat-conducting insulating layer is fixed by means of organic silicon adhesive.
10. A heat dissipation type large capacity dry-type transformer according to claim 8, characterized in that: The thickness of the thermally conductive insulating layer is 500-600 μm.