Three-dimensional wound core dry-type transformer and its waterproof heat dissipation structure
By designing the heat dissipation assembly and waterproof cover in a three-dimensional coiled iron core dry transformer, effective heat dissipation and waterproofing are achieved, solving the heat dissipation and waterproofing problems of traditional equipment in outdoor use, and avoiding oil leakage from oil-immersed transformers risk.
Patent Information
- Application Number
- CN201910427233.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- Filing Date
- 2019-05-22
- Publication Date
- 2024-12-10
- Estimated Expiration
- 2039-05-22
AI Technical Summary
The traditional three-dimensional coiled iron core dry transformer has poor heat dissipation and waterproofing effect, which cannot effectively adapt to the changing outdoor environment, and the oil-immersed transformer has a risk of oil leakage.
A waterproof and heat dissipation structure including a heat dissipation assembly and a waterproof cover is designed. The heat dissipation assembly forms a heat dissipation channel and communicates with the outer box. One end away from the outer box extends into the waterproof cover, and communicates with the heat dissipation port through the waterproof chamber to achieve heat dissipation and passes through the Barriers and deflectors prevent rainwater from entering.
It effectively improves the heat dissipation and waterproof performance of the three-dimensional coiled iron core dry transformer, avoids the impact of rainwater on the use stability and safety, adapts to the outdoor environment, and avoids the risk of oil leakage from the oil-immersed transformer.
Smart Images
Figure CN110021471B_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to the technical field of electric power equipment, in particular to a three-dimensional wound iron core dry-type transformer and a waterproof heat dissipation structure thereof. Background Art
[0002] Currently, transformers used outdoors are generally oil-immersed. However, when exposed to abnormal events such as lightning strikes, these transformers can leak oil, posing a potential safety hazard to people and the environment. While three-dimensional wound core dry-type transformers are immune to oil leakage, they suffer from poor heat dissipation and waterproofing, making them ineffective for outdoor use. Summary of the Invention
[0003] Based on this, it is necessary to provide a three-dimensional wound core dry-type transformer with good heat dissipation and waterproof effect and its waterproof heat dissipation structure to address the above problems.
[0004] A waterproof heat dissipation structure for a three-dimensional wound core dry-type transformer, comprising:
[0005] a heat dissipation assembly, configured to be disposed on the outer box, wherein the heat dissipation assembly is formed with a heat dissipation channel, and the heat dissipation channel is configured to communicate with the outer box; and
[0006] The waterproof cover forms a waterproof cavity, the bottom wall or side wall of the waterproof cover is provided with a heat dissipation port connected to the waterproof cavity, the end of the heat dissipation component away from the outer box extends into the waterproof cover, and the heat dissipation channel is connected to the waterproof cavity.
[0007] When the waterproof heat dissipation structure of the above-mentioned three-dimensional wound iron core dry-type transformer is in use, the heat dissipation component is arranged on the outer box, wherein the transformer body is arranged in the outer box, and the outer box can effectively protect the transformer body. Since the heat dissipation component forms a heat dissipation channel, the heat dissipation channel is connected to the outer box, and the heat of the transformer body can enter the heat dissipation channel. At the same time, the end of the heat dissipation component away from the outer box extends into the waterproof cover, so that the heat dissipation channel is connected with the heat dissipation port through the waterproof cavity, and the heat is dissipated through the heat dissipation channel through the waterproof cavity and out of the heat dissipation port of the waterproof cover. Since the end of the heat dissipation component away from the outer box extends into the waterproof cover, and the heat dissipation port is opened on the bottom wall or side wall of the waterproof cover, it can effectively prevent rainwater and the like from directly entering the heat dissipation channel, effectively preventing rainwater from affecting the stability and safety of the transformer body in the outer box, so that the three-dimensional wound iron core dry-type transformer can effectively adapt to the changing outdoor environment.
[0008] In one embodiment, the end of the heat dissipation component away from the outer box extends into the waterproof cover through the heat dissipation port, and a mesh plate is provided at the heat dissipation port. One side of the mesh plate is provided on the heat dissipation component, and the other opposite side is provided on the waterproof cover.
[0009] In one embodiment, a baffle is further included, which is arranged around the waterproof cover and located on a side of the mesh plate facing away from the waterproof cavity.
[0010] In one embodiment, the heat dissipation assembly includes a heat dissipation pipe and a plurality of blocking members, the side walls of the heat dissipation pipe form the heat dissipation channel, and the plurality of blocking members are spaced apart in the heat dissipation channel.
[0011] In one embodiment, the blocking member includes a blocking portion and a water blocking portion, the water blocking portion is arranged on one side of the blocking portion, the blocking portion is obliquely arranged on the inner wall of the heat dissipation pipe, and the water blocking portion forms a water blocking groove on one side facing the waterproof cavity.
[0012] In one embodiment, the blocking member further includes a cover plate, a heat dissipation hole is opened on the blocking portion, the cover plate is arranged on the side of the blocking portion facing the waterproof cover, one side of the cover plate is arranged on the side of the heat dissipation hole away from the water blocking portion, and there is a distance between the other side of the cover plate and the blocking portion, and the projection of the cover plate on the blocking portion can cover the heat dissipation hole.
[0013] In one embodiment, a flow guide is further included, wherein the flow guide is formed with a flow guide channel, one end of the flow guide is arranged on the water retaining portion, and the other end passes through the heat dissipation pipe, and the flow guide channel is connected to the water retaining groove.
[0014] A three-dimensional wound core dry-type transformer, comprising:
[0015] outer box;
[0016] The transformer body is disposed in the outer box; and
[0017] In the waterproof heat dissipation structure as described above, the heat dissipation component is arranged on the outer box, and the heat dissipation channel is connected to the outer box.
[0018] When the above-mentioned three-dimensional wound iron core dry-type transformer is in use, the transformer body is set in an outer box, and the heat dissipation component is set on the outer box. The outer box can effectively protect the transformer body and play an effective role in windproofing, dustproofing, external impact protection, and protection against small animals. Since the heat dissipation component forms a heat dissipation channel, the heat dissipation channel is connected to the outer box, and the heat dissipation of the transformer body can enter the heat dissipation channel. At the same time, the end of the heat dissipation component away from the outer box extends into the waterproof cover so that the heat dissipation channel is connected to the heat dissipation port through the waterproof cavity, and the heat is dissipated through the heat dissipation channel through the waterproof cavity and out of the heat dissipation port of the waterproof cover. Since the end of the heat dissipation component away from the outer box extends into the waterproof cover, and the heat dissipation port is opened on the bottom wall or side wall of the waterproof cover, it can effectively prevent rainwater and the like from directly entering the heat dissipation channel, effectively preventing rainwater from affecting the stability and safety of the transformer body in the outer box, so that the three-dimensional wound iron core dry-type transformer can effectively adapt to the changing outdoor environment.
[0019] In one embodiment, the outer box includes a top plate, side plates and a bottom plate, the bottom plate is arranged opposite to the top plate, the side plates stand between the bottom plate and the top plate, the side plates form a receiving cavity for accommodating the transformer body, a plurality of ventilation holes are opened on the bottom plate, and the heat dissipation component is arranged on the top plate.
[0020] In one embodiment, the heat dissipation assembly is detachably mounted on the outer box. BRIEF DESCRIPTION OF THE DRAWINGS
[0021] Figure 1 It is a front view of a three-dimensional wound core dry-type transformer in one embodiment;
[0022] Figure 2 for Figure 1 The rear view of the three-dimensional wound core dry-type transformer shown;
[0023] Figure 3 for Figure 1 A top view of the three-dimensional wound core dry-type transformer shown;
[0024] Figure 4 for Figure 1 Top view of the midsole plate;
[0025] Figure 5 for Figure 1 The three-dimensional wound core dry-type transformer shown in the figure omits the waterproof heat dissipation structure, side panels and top panel of the main view;
[0026] Figure 6 for Figure 2 The three-dimensional wound core dry-type transformer shown in the figure omits the waterproof heat dissipation structure, side panels and top panel of the main view;
[0027] Figure 7 for Figure 1Cross-sectional view of the waterproof heat dissipation structure;
[0028] Figure 8 for Figure 7 A cross-sectional view of the other side of the waterproof heat dissipation structure is shown. DETAILED DESCRIPTION
[0029] To make the above-mentioned objects, features, and advantages of the present invention more readily apparent, specific embodiments of the present invention are described in detail below with reference to the accompanying drawings. The following description sets forth numerous specific details to facilitate a full understanding of the present invention. However, the present invention can be implemented in many other ways than those described herein, and those skilled in the art may make similar modifications without departing from the scope of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.
[0030] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly attached to the other element or there may be an intermediate element. When an element is referred to as being "connected to" another element, it may be directly connected to the other element or there may be an intermediate element. The terms "vertical," "horizontal," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only embodiments.
[0031] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art to which the present invention pertains. The terms used herein in the specification of the present invention are for the purpose of describing specific embodiments only and are not intended to limit the present invention. The various technical features of the embodiments described above may be combined arbitrarily. To simplify the description, not all possible combinations of the various technical features in the embodiments described above are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.
[0032] See also Figures 1 to 3 The three-dimensional wound core dry-type transformer 10 in one embodiment effectively adapts to outdoor environments, provides excellent heat dissipation and waterproofing, and avoids the potential for oil leakage associated with oil-immersed transformers. Specifically, the three-dimensional wound core dry-type transformer 10 includes an outer box 100, a transformer body 200 (shown in FIG5 ), and a waterproof heat dissipation structure 300.
[0033] The transformer body 200 is disposed within the outer box 100, and a waterproof heat dissipation structure 300 is disposed on the outer box 100. The waterproof heat dissipation structure 300 is in communication with the outer box 100. Heat generated by the transformer body 200 can be effectively dissipated through the waterproof heat dissipation structure 300. The transformer body 200 utilizes a dry-type transformer. The transformer body 200 is disposed within the outer box 100, with no oil between the transformer body 200 and the outer box 100, thereby fundamentally resolving the oil leakage problem of oil-immersed transformers. Furthermore, the outer box 100 isolates the transformer body 200 from the external environment, effectively protecting it from wind, dust, external impact, and preventing small animals from entering the outer box 100. This prevents damage to the transformer body 200 and ensures its normal operation.
[0034] In this embodiment, the dimensions of the outer box 100 match those of the transformer body 200, thereby effectively adapting the dimensions of the outer box 100 to the transformer body 200 and effectively avoiding increasing the overall dimensions of the outer box 100. Specifically, the outer box 100 is designed to have a substantially hexagonal cross-section based on the outer dimensions of the transformer body 200.
[0035] In this embodiment, the outer box 100 is made of an insulating material. Due to its electrical insulating properties, the distance between the inner wall of the outer box 100 and the transformer body 200 can be further reduced, thereby further reducing the size of the outer box 100. Specifically, the outer box 100 is made of insulating glass. The transparency of the glass allows for intuitive observation of the status of the transformer body 200 within the outer box 100, facilitating inspection and maintenance of the transformer body 200.
[0036] In one embodiment, the outer box 100 includes a top plate 110, side plates 120, and a bottom plate 130. The bottom plate 130 is disposed opposite the top plate 110, and the side plates 120 are disposed between the bottom plate 130 and the top plate 110. The side plates 120 define a receiving cavity, and the transformer body 200 is disposed on the bottom plate 130 and located within the receiving cavity.
[0037] In this embodiment, the transformer body 200 can be connected to the base plate 130 by bolts. Of course, in another embodiment, the transformer body 200 can also be directly welded to the base plate 130. In other embodiments, as long as the transformer body 200 can be effectively fixed to the base plate 130, it will suffice.
[0038] Specifically, an inspection door 140 is provided on the side panel 120. The inspection door 140 facilitates inspection or adjustment of the transformer body 200 in the accommodating cavity, thereby effectively improving the efficiency of the inspection or adjustment.
[0039] Furthermore, a rainproof eave 150 is provided on the side panel 120, and the rainproof eave 150 is located above the inspection door 140. By providing the rainproof eave 150, rainwater can be prevented from entering the inspection door 140 along the outer wall of the outer box 100, thereby effectively improving the rainproof effect of the outer box 100.
[0040] In one embodiment, an access opening is formed on the side panel 120, and an access door 140 is located within the access opening. The access opening is provided with a door frame, and a waterproof flange is formed on the outer periphery of the door frame. The waterproof flange further prevents rainwater from entering the access opening, thereby improving the waterproof performance of the access door 140. Furthermore, sealing strips may be provided around the door frame to further enhance the waterproof performance of the access door 140.
[0041] Please also refer to Figure 1 and Figure 4 In one embodiment, a plurality of ventilation holes 132 are defined in the bottom plate 130, and a waterproof heat dissipation structure 300 is disposed on the top plate 110. Since the transformer body 200 is disposed on the bottom plate 130, and due to the principle that heat generated by the transformer body 200 rises, effective convection is achieved through the ventilation holes 132 in the bottom plate 130 and the waterproof heat dissipation structure 300 disposed on the top plate 110. Cool air enters the outer case 100 through the ventilation holes 132, effectively dissipating heat generated during operation of the transformer body 200 through the waterproof heat dissipation structure 300 through the air flow. This ensures the safety of the transformer body 200 during operation and, consequently, its service life.
[0042] Specifically, a plurality of ventilation holes 132 are provided on the bottom plate 130, and ventilation mesh plates 134 are provided at the ventilation holes 132. By providing the ventilation mesh plates 134, effective protection can be achieved while ensuring ventilation.
[0043] Optionally, a support 160 is provided at the bottom of the base plate 130. The support 160 facilitates installation of the outer box 100 on a foundation or a stand, or other location where the three-dimensional wound core dry-type transformer 10 is to be installed. At the same time, the support 160 can effectively support the base plate 130, thereby facilitating air entry into the outer box 100 through the ventilation holes 132.
[0044] In this embodiment, the support 160 is made of channel steel. In other embodiments, the support 160 can also be formed by bending a steel plate, or the support 160 can be other structures that are convenient for fixing to a foundation or a stand.
[0045] Optionally, a hanging member 112 (such as Figure 3 By providing the hoisting member 112, it is convenient to cooperate with the lifting mechanism, thereby facilitating the movement and transportation of the three-dimensional wound core dry-type transformer 10.
[0046] See also Figure 5 and Figure 6 In one embodiment, the transformer body 200 includes a transformer body 210, a plurality of high-voltage output terminals 220, and a plurality of low-voltage output terminals 230. The transformer body 210 includes a high-voltage coil and a low-voltage coil. The low-voltage coil is disposed inside the high-voltage coil. The plurality of high-voltage output terminals 220 are connected to the high-voltage coil, and the plurality of low-voltage output terminals 230 are connected to the low-voltage coil.
[0047] Specifically, a plurality of high-voltage bushings 240 are provided on the top plate 110 of the outer box 100, and a plurality of high-voltage outlet terminals 220 are connected to the plurality of high-voltage bushings 240 in a one-to-one correspondence. In this embodiment, the high-voltage outlet terminals 220 can be connected to the high-voltage bushings 240 via cables or copper bars, making the high-voltage outlet method simple, safe, and reliable.
[0048] Furthermore, a plurality of low-voltage bushings 250 are provided on the top plate 110 of the outer box 100, and a plurality of low-voltage outlet terminals 230 are connected to the plurality of low-voltage bushings 250 in a one-to-one correspondence. In this embodiment, the low-voltage outlet terminals 230 can be connected to the low-voltage bushings 250 via cables or copper bars, making the low-voltage outlet method simple, safe, and reliable.
[0049] See also Figure 1 、 Figure 7 and Figure 8 In one embodiment, the waterproof heat dissipation structure 300 includes a heat dissipation assembly 310 and a waterproof cover 320. The heat dissipation assembly 310 is disposed on the outer case 100 and defines a heat dissipation channel 311 for communicating with the outer case 100. The waterproof cover 320 defines a waterproof cavity 321. A heat dissipation vent is defined on the bottom wall or side wall of the waterproof cover 320. The end of the heat dissipation assembly 310 away from the outer case 100 extends into the waterproof cover 320, and the heat dissipation channel 311 communicates with the waterproof cavity 321.
[0050] Because the heat dissipation assembly 310 is formed with a heat dissipation channel 311, the heat dissipation channel 311 is connected to the outer box 100, and thus the heat of the transformer body 200 can be effectively dissipated through the heat dissipation channel 311, thereby improving the adaptability of the three-dimensional wound iron core dry-type transformer 10. At the same time, the end of the heat dissipation assembly 310 away from the outer box 100 extends into the waterproof cover 320, so that the heat dissipation channel 311 is connected to the heat dissipation port through the waterproof cavity 321, thereby allowing heat to pass through the heat dissipation channel 311, through the waterproof cavity 321, and out of the heat dissipation port. At the same time, the waterproof cover 320 can effectively prevent rainwater and other substances from directly entering the heat dissipation channel 311, effectively preventing rainwater from affecting the stability and safety of the transformer body 200 in the outer box 100, allowing the three-dimensional wound iron core dry-type transformer 10 to effectively adapt to the changing outdoor environment.
[0051] In this embodiment, the heat dissipation assembly 310 is disposed on the top plate 110, and the waterproof cover 320 is disposed on a side of the heat dissipation assembly 310 away from the top plate 110. The waterproof cover 320 effectively prevents rainwater from dripping into the heat dissipation channel 311. The heat dissipation assembly 310 cooperates with the bottom plate 130 of the outer box 100 to achieve effective air circulation within the outer box 100, effectively improving the heat dissipation efficiency of the transformer body 200.
[0052] Optionally, the heat dissipation assembly 310 is detachably mounted on the outer box 100. Removing the heat dissipation assembly 310 facilitates cleaning or replacement of the heat dissipation channel 311, thereby preventing foreign matter from clogging the heat dissipation channel 311 due to long-term use, or damaging the heat dissipation assembly 310, which may result in ineffective heat dissipation.
[0053] Specifically, the waterproof heat dissipation structure 300 further includes a connecting flange 330, which is sleeved and fixed on the heat dissipation assembly 310. The connecting flange 330 is detachably mounted on the top plate 110 by screws.
[0054] Furthermore, a through hole is formed on the top plate 110, into which the end of the heat dissipation assembly 310 facing the outer box 100 can extend, effectively improving the stability of the connection flange 330 on the top plate 110. Furthermore, the connection flange 330 is fixed to the top plate 110 to effectively cover the through hole, preventing rainwater from entering the outer box 100 through the space between the heat dissipation assembly 310 and the inner wall of the through hole.
[0055] In other embodiments, the heat dissipation assembly 310 can be clamped onto the top plate 110. In another embodiment, the heat dissipation assembly 310 can be directly fixed to the outer box 100, as long as the heat dissipation assembly 310 can be effectively placed on the outer box 100 and the heat dissipation channel 311 is connected to the outer box 100.
[0056] In one embodiment, the heat dissipation assembly 310 includes a heat dissipation pipe 312 and a plurality of blocking members 313. The sidewalls of the heat dissipation pipe 312 define a heat dissipation channel 311, and the plurality of blocking members 313 are spaced apart within the heat dissipation channel 311. The plurality of blocking members 313 provide a certain degree of rainwater blocking effect, preventing rainwater from entering the heat dissipation channel 311 and then flowing directly into the outer case 100. Furthermore, the spaced-apart arrangement of the plurality of blocking members 313 prevents the heat dissipation effect of the heat dissipation pipe 312 from being affected.
[0057] Specifically, the blocking member 313 includes a blocking portion 314 and a water retaining portion 315. The water retaining portion 315 is disposed on one side of the blocking portion 314. The blocking portion 314 is disposed obliquely on the inner wall of the heat dissipation tube 312. The side of the water retaining portion 315 facing the waterproof cavity 321 forms a water retaining groove 316. If rainwater accidentally enters the heat dissipation channel 311, the blocking portion 314 is disposed obliquely on the inner wall of the heat dissipation tube 312, thereby effectively diverting the rainwater into the water retaining groove 316 and preventing the rainwater from entering the outer box 100.
[0058] Furthermore, the heat pipe 312 is disposed on the top plate 110, and multiple blocking members 313 are arranged side by side and spaced apart on the same horizontal plane. Because the blocking portions 314 are arranged at an angle, the projections of the blocking members 313 on this same plane can cover the heat dissipation channels 311. By ensuring that the projections of the blocking members 313 on this same plane cover the heat dissipation channels 311, rainwater is further prevented from directly entering the outer case 100 through the heat dissipation channels 311.
[0059] In this embodiment, the barrier portion 314 and the water retaining portion 315 are integrally formed, wherein the water retaining portion 315 is formed by extending and bending one side of the barrier portion 314. In other embodiments, the barrier portion 314 and the water retaining portion 315 can also be independent structures, with the water retaining portion 315 fixed to one side of the barrier portion 314.
[0060] In this embodiment, there are four blocking members 313. Of course, in other embodiments, there can be other numbers of blocking members 313, such as two or three.
[0061] Optionally, the blocking member 313 further includes a cover plate 317. The blocking portion 314 is provided with a heat dissipation hole. The cover plate 317 is disposed on a side of the blocking portion 314 facing the waterproof cover 320. One side of the cover plate 317 is disposed on a side of the heat dissipation hole away from the water retaining portion 315. The other side of the cover plate 317 is spaced apart from the blocking portion 314. The projection of the cover plate 317 on the blocking portion 314 can cover the heat dissipation hole. By providing the heat dissipation hole on the blocking portion 314, heat can be dissipated not only through the gaps between the blocking members 313 but also through the heat dissipation hole, thereby effectively improving the heat dissipation efficiency of the heat dissipation assembly 310. The provision of the cover plate 317 can effectively prevent rainwater from entering the heat dissipation hole, allowing rainwater entering the heat dissipation channel 311 to effectively flow into the water retaining groove 316.
[0062] In one embodiment, the waterproof heat dissipation structure 300 further includes a flow guide 340, which is formed with a flow guide channel 341. One end of the flow guide 340 is disposed on the water retaining portion 315, and the other end passes through the heat dissipation pipe 312. The flow guide channel 341 is connected to the water retaining groove 316. If rainwater flows into the water retaining groove 316, the rainwater in the water retaining groove 316 can further flow into the flow guide channel 341. Because the other end of the flow guide 340 passes through the heat dissipation pipe 312, the rainwater can be drained out of the heat dissipation pipe 312 through the flow guide channel 341.
[0063] Specifically, a waterproof box 342 is provided on the outer wall of the connection between the other end of the flow guide 340 and the heat dissipation pipe 312. The flow guide channel 341 communicates with the outside world through the waterproof box 342. By providing the waterproof box 342 over the connection between the other end of the flow guide 340 and the heat dissipation pipe 312, rainwater can be prevented from entering the heat dissipation pipe 312 through the connection between the other end of the flow guide 340 and the heat dissipation pipe 312.
[0064] In one embodiment, the end of the heat dissipation assembly 310 away from the outer case 100 extends through a heat dissipation opening into the waterproof cover 320. A mesh plate 350 is provided at the heat dissipation opening. One side of the mesh plate 350 is provided on the heat dissipation assembly 310, and the other, opposite side is provided on the waterproof cover 320. By extending the heat dissipation assembly 310 through the heat dissipation opening into the waterproof cover 320, the need for other openings in the waterproof cover 320 is avoided. The provision of the mesh plate 350 not only effectively prevents foreign matter from entering the waterproof cavity 321, but also prevents it from entering the heat dissipation channel 311. Furthermore, the mesh plate 350 effectively secures the waterproof cover 320 to the heat dissipation assembly 310, achieving an effective connection between the waterproof cover 320 and the heat dissipation assembly 310.
[0065] In this embodiment, one side of the mesh 350 is detachably attached to the heat pipe 312, while the other side is fixed to the inner wall of the waterproof cover 320. This achieves a detachable connection between the waterproof cover 320 and the heat pipe 312. In another embodiment, one side of the mesh 350 can be detachably attached to the heat pipe 312, while the other side can also be detachably attached to the inner wall of the waterproof cover 320. Alternatively, one side of the mesh 350 can be fixed to the heat pipe 312, while the other side can be detachably attached to the inner wall of the waterproof cover 320.
[0066] In one embodiment, the waterproof heat dissipation structure 300 further includes a baffle 322, which is disposed around the waterproof cover 320 and located on the side of the mesh 350 facing away from the waterproof cavity 321. The baffle 322 effectively blocks rainwater, reducing the probability of rainwater entering the waterproof cavity 321, thereby further preventing rainwater from entering the heat dissipation channel 311.
[0067] The three-dimensional wound core dry-type transformer 10 is different from oil-immersed transformers, which require frequent inspections and monitoring of oil level changes. Furthermore, the oil tank seals and insulation components of oil-immersed transformers are prone to aging, making oil leaks more likely and requiring frequent maintenance. However, the three-dimensional wound core dry-type transformer 10 is naturally cooled, offering excellent waterproof and heat dissipation performance, strong fire resistance, and safety.
[0068] The above-described embodiments merely represent several embodiments of the present invention. While the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent. It should be noted that a person skilled in the art would be able to make various modifications and improvements without departing from the spirit of the present invention, and these modifications and improvements fall within the scope of protection of the present invention. Therefore, the scope of protection of the patent for this invention shall be determined by the appended claims.
Claims
1. A waterproof heat dissipation structure of a three-dimensional wound core dry-type transformer, characterized in that: include: A heat dissipation component is used to be arranged on the outer box, and the heat dissipation component is formed with a heat dissipation channel, and the heat dissipation channel is used to communicate with the outer box; and A waterproof cover is formed with a waterproof cavity, a bottom wall or a side wall of the waterproof cover is provided with a heat dissipation port connected with the waterproof cavity, an end of the heat dissipation component away from the outer box extends into the waterproof cover, and the heat dissipation channel is connected with the waterproof cavity; The outer box includes a top plate, a side plate and a bottom plate, the bottom plate is arranged opposite to the top plate, the side plate stands between the bottom plate and the top plate, the side plate surrounds a receiving cavity for receiving the transformer body, a plurality of ventilation holes are opened on the bottom plate, and the heat dissipation assembly is arranged on the top plate; The heat generated by the transformer body floats up, and the ventilation holes and the waterproof heat dissipation structure form effective convection. Cold air enters the outer box through the ventilation holes, and the heat generated by the transformer body during operation follows the flow of air, and is dissipated through the heat dissipation channel, the waterproof cavity, and the heat dissipation port; The heat dissipation assembly includes a heat dissipation pipe and a plurality of blocking members, the side walls of the heat dissipation pipe enclose the heat dissipation channel, and the plurality of blocking members are arranged in the heat dissipation channel at intervals; The blocking member includes a blocking portion and a water blocking portion, wherein the water blocking portion is arranged on one side of the blocking portion, the blocking portion is obliquely arranged on the inner wall of the heat dissipation pipe, and the water blocking portion forms a water blocking groove on one side facing the waterproof cavity; The blocking member further comprises a cover plate, the blocking portion is provided with a heat dissipation hole, the cover plate is arranged on a side of the blocking portion facing the waterproof cover, one side of the cover plate is arranged on a side of the heat dissipation hole away from the water blocking portion, and there is a distance between the other side of the cover plate and the blocking portion, and the projection of the cover plate on the blocking portion can cover the heat dissipation hole; The plurality of blocking members are arranged in parallel and at intervals in the same horizontal plane, so that heat can be dissipated from the gaps between the plurality of blocking members and the heat dissipation holes.
2. The waterproof heat dissipation structure of the three-dimensional wound core dry-type transformer according to claim 1 is characterized in that: One end of the heat dissipation component away from the outer box extends into the waterproof cover through the heat dissipation port, and a mesh plate is arranged at the heat dissipation port. One side of the mesh plate is arranged on the heat dissipation component, and the other opposite side is arranged on the waterproof cover.
3. The waterproof heat dissipation structure of the three-dimensional wound core dry-type transformer according to claim 2 is characterized in that: It also includes a baffle, which is arranged around the waterproof cover and located on a side of the mesh plate that is away from the waterproof cavity.
4. The waterproof heat dissipation structure of the three-dimensional wound core dry-type transformer according to claim 1, characterized in that: It also includes a flow guide member, which is formed with a flow guide channel. One end of the flow guide member is arranged on the water retaining portion, and the other end passes through the heat dissipation pipe. The flow guide channel is connected to the water retaining groove.
5. A three-dimensional wound core dry-type transformer, characterized in that: include: outer box; A transformer body is arranged in the outer box; and According to the waterproof heat dissipation structure according to any one of claims 1 to 4, the heat dissipation component is arranged on the outer box, and the heat dissipation channel is connected to the outer box.
6. The three-dimensional wound core dry-type transformer according to claim 5, characterized in that: The outer box includes a top plate, side plates and a bottom plate, the bottom plate is arranged opposite to the top plate, the side plates stand between the bottom plate and the top plate, the side plates enclose a receiving cavity for accommodating the transformer body, a plurality of ventilation holes are opened on the bottom plate, and the heat dissipation component is arranged on the top plate.
7. The three-dimensional wound core dry-type transformer according to claim 5, characterized in that: The heat dissipation component is detachably arranged on the outer box.