Dry-type transformer

Abstract

The utility model discloses a dry-type transformer which comprises a plurality of windings and a fan, iron cores are arranged in the windings, air outlets are formed in the fan, an air outlet frame is arranged below the iron cores, air outlet holes are formed in the air outlet frame, ventilation hoods are arranged on the air outlets, and the ventilation hoods are provided with ventilation holes. A communicated ventilation pipe is fixedly connected between the ventilation hood and the air outlet frame, a fixing plate is fixedly connected to the bottom of the fan, a fixing groove matched with the ventilation hood is formed in the fixing plate, the direction of the air outlet faces downwards, fixing holes are formed in the ventilation hood and the fixing plate, fixing bolts are in threaded connection with the interiors of the fixing holes, and the fixing bolts are in threaded connection with the fixing holes. And a sealing groove is formed in the fan. Compared with the prior art, the dry-type transformer has the advantages that the winding and the iron core located in the winding can be cooled conveniently, the cooling effect is improved, normal operation of the transformer is facilitated, and the service life of the transformer is prolonged.

Description

Technical Field

[0001] The utility model belongs to the technical field of dry-type transformers, and in particular relates to a dry-type transformer. Background Art

[0002] Dry-type transformers are widely used in local lighting, high-rise buildings, airports, docks, CNC machinery and equipment and other places. Simply put, a dry-type transformer refers to a transformer whose core and winding are not immersed in insulating oil.

[0003] Existing dry-type transformers are generally equipped with cooling fans, which can dissipate heat when the transformer is under load. The cooling fan is generally installed under the winding, resulting in the air volume blown by the fan being concentrated on the transformer winding part, which is not conducive to the heat dissipation of the iron core in the winding, affecting the normal operation and service life of the transformer. Utility Model Content

[0004] The utility model aims to provide a dry-type transformer, which is convenient for dissipating heat to the winding and the iron core located inside the winding, thereby increasing the heat dissipation effect, being beneficial to the normal operation of the transformer and increasing the service life of the transformer.

[0005] In order to achieve the above-mentioned purpose, a specific embodiment of the utility model provides a dry-type transformer, including a plurality of windings and a fan, wherein an iron core is arranged inside the winding, an air outlet is arranged on the fan, an air outlet frame is arranged below the iron core, an air outlet frame is arranged with air outlet holes, a ventilation hood is arranged on the air outlet, and a ventilation pipe communicating with the ventilation hood is fixedly connected between the ventilation hood and the air outlet frame.

[0006] In one or more embodiments of the present invention, a fixing plate is fixedly connected to the bottom of the fan, and a fixing groove matching the ventilation hood is formed on the fixing plate.

[0007] In one or more embodiments of the present invention, the air outlet is directed downward.

[0008] In one or more embodiments of the present invention, fixing holes are provided in the ventilation hood and the fixing plate, and fixing bolts are threadedly connected in the fixing holes.

[0009] In one or more embodiments of the utility model, a sealing groove is provided in the fan, and a sealing ring matching the sealing groove is fixedly connected to the ventilation hood.

[0010] In one or more embodiments of the present invention, the ventilation pipe is a hose.

[0011] In one or more embodiments of the present invention, a protective plate is provided on the fixed plate, and a support column is fixedly connected between the protective plate and the fixed plate.

[0012] In one or more embodiments of the present invention, a support plate is fixedly connected to the side of the bottom of the winding, a base is fixedly connected to the bottom of the support plate, and a limit frame is fixedly connected to the bottom end of the support plate.

[0013] In one or more embodiments of the present invention, a connecting pipe is fixedly connected between the air outlet frames.

[0014] In one or more embodiments of the present invention, a diverter plate is provided in the air outlet frame.

[0015] Compared with the prior art, the dry-type transformer of the utility model is convenient for dissipating heat from the winding and the iron core inside the winding, thereby increasing the heat dissipation effect, being beneficial to the normal operation of the transformer and increasing the service life of the transformer. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the prior art descriptions are briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the utility model, and for ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0017] Figure 1 This is a structural schematic diagram of a dry-type transformer in one embodiment of the utility model;

[0018] Figure 2 It is a cross-sectional view of a dry-type transformer in one embodiment of the utility model;

[0019] Figure 3 for Figure 2 The structural diagram at A in the middle;

[0020] Figure 4 It is a side view structural diagram of a dry-type transformer in one embodiment of the utility model;

[0021] Figure 5 The figure is a bottom view structural diagram of a dry-type transformer in one embodiment of the utility model.

[0022] Description of main reference numerals:

[0023] 11. Winding; 12. Support plate; 13. Base; 14. Fan; 15. Fixing plate; 21. Air outlet; 22. Fixing groove; 23. Ventilation hood; 24. Ventilation duct; 25. Fixing bolt; 26. Fixing hole; 27. Sealing groove; 28. Sealing ring; 31. Air outlet frame; 41. Limiting frame; 51. Connecting pipe; 61. Protective plate; 62. Support column; 71. Diverter plate; 81. Iron core. DETAILED DESCRIPTION

[0024] In order to enable those skilled in the art to better understand the technical solutions in the present invention, the technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present invention.

[0025] like Figures 1 to 5 As shown, a dry-type transformer in an embodiment of the utility model includes a plurality of windings 11 and a fan 14, wherein an iron core 81 is arranged in the winding 11, and an air outlet 21 is arranged on the fan 14. An air outlet frame 31 is arranged below the iron core 81, and an air outlet hole is arranged on the air outlet frame 31, and a ventilation cover 23 is arranged on the air outlet 21, and a ventilation pipe 24 communicating with the ventilation cover 23 and the air outlet frame 31 is fixedly connected.

[0026] Specifically, the wind generated by the fan 14 is discharged through the air outlet 21, and the ventilation cover 23 can collect the wind discharged through the air outlet 21. Then, the wind is transported to the air outlet frame 31 through the ventilation pipe 24, and then discharged through the air outlet hole above the air outlet frame 31, so as to dissipate heat for the winding 11 and the iron core 81 located on the air outlet frame 31.

[0027] The winding 11 is divided into a low-voltage winding and a high-voltage winding, and there is a gap between the iron core 81, the low-voltage winding and the high-voltage winding. The wind discharged through the air outlet frame 31 can flow upward along the gap between the iron core 81, the low-voltage winding and the high-voltage winding, and then take away the heat on the iron core 81, the low-voltage winding and the high-voltage winding. Increase the heat dissipation range and heat dissipation effect.

[0028] Ginseng Figure 1 , Figure 2 and Figure 3 As shown, a fixing plate 15 is fixedly connected to the bottom of the fan 14, and a fixing slot 22 matching with a ventilation cover 23 is provided on the fixing plate 15. The ventilation cover 23 is convenient to pass through the fixing slot 22 and be fixed on the fan 14.

[0029] The air outlet 21 is directed downwards, so that the ventilation cover 23 can be easily installed. The ventilation pipe 24 is located below the support plate 12 and between the base 13, so that it can be easily installed and removed.

[0030] The ventilation cover 23 and the fixing plate 15 are both provided with fixing holes 26, and the fixing holes 26 are threadedly connected with fixing bolts 25. It is convenient to fix the ventilation cover 23 on the fan 14.

[0031] A sealing groove 27 is provided in the fan 14, and a sealing ring 28 matching the sealing groove 27 is fixedly connected to the ventilating cover 23. Specifically, the sealing ring 28 is a rubber ring that can be inserted into the sealing groove 27 with an interference fit to prevent the air discharged through the air outlet 21 from leaking.

[0032] The ventilation pipe 24 is a hose, which is convenient for installing and disassembling the ventilation hood 23.

[0033] A protective plate 61 is provided on the fixing plate 15, and a support column 62 is fixedly connected between the protective plate 61 and the fixing plate 15. The protective plate 61 can protect the fan 14, on the one hand, preventing the fan 14 from being directly exposed to rain and sunlight, and on the other hand, preventing debris from falling on the fan 14 and preventing the air inlet of the fan 14 from being blocked.

[0034] There is a sufficient gap between the protection plate 61 and the fan 14 to allow air to flow normally without affecting the normal use of the fan 14.

[0035] The side of the bottom of the winding 11 is fixedly connected with a support plate 12, the bottom of the support plate 12 is fixedly connected with a base 13, and the bottom end of the support plate 12 is fixedly connected with a limit frame 41. The ventilation pipe 24 can be placed on the limit frame 41 to prevent the middle part of the ventilation pipe 24 from falling, thereby preventing the air from being smoothly transported to the air outlet frame 31 through the ventilation pipe 24.

[0036] A connecting pipe 51 is fixedly connected between the air outlet racks 31. When the fan 14 is damaged and cannot deliver gas into the air outlet racks 31, the connecting pipe 51 can make the adjacent air outlet racks 31 flow mutually, so that the gas can always be discharged through the air outlet racks 31.

[0037] A diverter plate 71 is provided in the air outlet frame 31. The diverter plate 71 is provided with diverter holes, and the gas in the air outlet frame 31 can be diverted through the diverter plate 71 to prevent the gas in the air outlet frame 31 from only flowing upward from the middle, thereby increasing the heat dissipation range of the transformer.

[0038] Compared with the prior art, the dry-type transformer of the utility model is convenient for dissipating heat from the winding and the iron core inside the winding, thereby increasing the heat dissipation effect, being beneficial to the normal operation of the transformer and increasing the service life of the transformer.

[0039] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

[0040] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A dry-type transformer, comprising a plurality of windings and a fan, wherein an iron core is arranged in the windings and an air outlet is arranged on the fan, characterized in that: An air outlet frame is arranged below the iron core, an air outlet hole is arranged on the air outlet frame, a ventilation hood is arranged on the air outlet, a ventilation pipe is fixedly connected between the ventilation hood and the air outlet frame, a fixing plate is fixedly connected to the bottom of the fan, a fixing groove matching the ventilation hood is arranged on the fixing plate, fixing holes are arranged in the ventilation hood and the fixing plate, and fixing bolts are threadedly connected in the fixing holes.

2. A dry-type transformer according to claim 1, characterized in that: The air outlet is directed downward.

3. A dry-type transformer according to claim 1, characterized in that: A sealing groove is provided in the fan, and a sealing ring matching the sealing groove is fixedly connected to the ventilation cover.

4. A dry-type transformer according to claim 1, characterized in that: The ventilation pipe is a hose.

5. A dry-type transformer according to claim 1, characterized in that: A protective plate is arranged on the fixing plate, and a supporting column is fixedly connected between the protective plate and the fixing plate.

6. A dry-type transformer according to claim 1, characterized in that: A support plate is fixedly connected to the side of the bottom of the winding, a base is fixedly connected to the bottom of the support plate, and a limiting frame is fixedly connected to the bottom end of the support plate.

7. A dry-type transformer according to claim 1, characterized in that: A connecting pipe is fixedly connected between the air outlet frames.

8. A dry-type transformer according to any one of claims 1 to 7, characterized in that: A splitter plate is arranged in the air outlet frame.

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