Outdoor dry-type transformer

Abstract

The utility model discloses an outdoor dry-type transformer. The outdoor dry-type transformer comprises a dry-type transformer main body, a box body and a cooling mechanism, the dry-type transformer main body is arranged in the box body, and a plurality of grid frames are arranged on the box body; the cooling mechanism is connected to the inner top wall of the box body and comprises an air extracting pump, the air outlet end of the air extracting pump is connected with a cooling box, a cooling assembly is arranged in the cooling box and comprises a first partition plate and a second partition plate, and a cooling cavity, a flowing cavity and a drying cavity are formed between the cooling box and the first partition plate and between the cooling box and the second partition plate; the first partition plate and the second partition plate are each provided with a plurality of vent holes, the cooling cavity, the flowing cavity and the drying cavity are communicated through the vent holes, and gas in the cooling cavity enters the flowing cavity through the vent holes and then enters the drying cavity through the vent holes. According to the utility model, the transformer can be cooled when the grid of the box body is closed, so that the influence of high temperature on the dry-type transformer is effectively reduced, the operation environment of the dry-type transformer can be ensured, and the failure rate is reduced.

Description

TECHNICAL FIELD

[0001] The utility model belongs to dry -type transformer technical field, specifically relates to an outdoor dry -type transformer. BACKGROUND

[0002] Dry -type transformer is a kind of transformer without using insulating oil, its iron core and winding are not immersed in insulating oil, mainly cooled by air or other gas.‌Dry -type transformer has multiple advantages, including maintenance-free, long service life, safer, etc. In addition, dry -type transformer has good insulation performance, strong lightning impulse resistance, and is suitable for high-rise buildings, airports, power stations and other important places requiring fire prevention, explosion prevention and moisture prevention.

[0003] In the patent library, the Chinese utility model patent with publication number CN218351239U discloses a dry -type transformer, which is provided with a box outside the dry -type transformer, and the box is provided with a grid frame that can be opened and closed. When the grid frame is opened, the dry -type transformer can be cooled. When the grid frame is closed, the dry -type transformer is not easily affected by external humid air, which can ensure the safe use of the dry -type transformer to some extent.

[0004] However, when the grid frame of the dry -type transformer is closed, although it can reduce the influence of external humidity, the gas in the box does not flow, which causes the heat in the box to easily accumulate and not easily discharge, thereby easily causing the dry -type transformer to easily overheat and increasing the failure rate of the dry -type transformer.

[0005] Therefore, in view of the above technical problems, it is necessary to provide an outdoor dry -type transformer.

[0006] The information disclosed in the background section of this document is only intended to increase the understanding of the overall background of the utility model and should not be considered as acknowledging or in any form implying that the information constitutes prior art known to those skilled in the art. UTILITY MODEL CONTENT

[0007] The utility model aims at providing an outdoor dry -type transformer, which can solve the problem that the grid of the box is easily closed and causes the dry -type transformer to overheat.

[0008] In order to achieve the above-mentioned purpose, the technical scheme provided by the utility model in one embodiment is as follows:

[0009] An outdoor dry -type transformer, comprising a dry -type transformer body, a box and a cooling mechanism.

[0010] The dry -type transformer body is arranged in the box, and the box is provided with a plurality of grid frames.

[0011] The cooling mechanism is connected to the inner top wall of the box body, and comprises an air suction pump, and a cooling box connected to the air outlet end of the air suction pump.

[0012] In one or more embodiments of the present application, the cooling assembly comprises a first partition plate and a second partition plate, and the cooling box, the first partition plate and the second partition plate form a cooling cavity, a flowing cavity and a drying cavity.

[0013] In one or more embodiments of the present application, a plurality of air holes are arranged on the first partition plate and the second partition plate, the cooling cavity, the flowing cavity and the drying cavity are communicated through the air holes, the gas in the cooling cavity enters the flowing cavity through the air holes, and then enters the drying cavity through the air holes.

[0014] In one or more embodiments of the present application, cooling liquid is arranged in the cooling cavity, the air outlet end of the air suction pump is arranged in the cooling liquid, and the liquid level of the cooling liquid is lower than the height of the air holes on the first partition plate, so as to reduce the temperature of the gas delivered by the air suction pump.

[0015] In one or more embodiments of the present application, a plurality of fins are connected to the side wall of the box body, one end of the fin is arranged in the cooling liquid through the cooling box, so as to reduce the temperature of the cooling liquid, and the cooling liquid is not easy to be heated.

[0016] In one or more embodiments of the present application, the cooling liquid is water, and the fin is made of heat-conducting metal material.

[0017] In one or more embodiments of the present application, a pair of drying cotton is arranged in the drying cavity, and the air holes on the second partition plate are arranged on the lower side of the drying cotton, so that the drying cotton can dry the moisture in the gas.

[0018] In one or more embodiments of the present application, a net rack is arranged on the upper side of the drying cotton, and activated carbon balls are arranged on the net rack, so that the activated carbon balls can further dry the moisture in the gas, and the reflux gas does not contain moisture.

[0019] In one or more embodiments of the present application, the cooling box is connected with a reflux pipe, the other end of the reflux pipe is connected with a straight pipe, a plurality of spray heads are arranged on the straight pipe, the dried gas is sprayed out through the straight pipe and the spray heads and re-enters the box body, so as to accelerate the flow of the gas in the box body, so that the dry-type transformer body can be cooled, and the grid frame does not easily have high temperature phenomenon when closed.

[0020] In one or more embodiments of the utility model, the spray head is arranged on the inner side wall of the box body and corresponds to the dry-type transformer body, the gas sprayed by the spray head can blow to the dry-type transformer body for cooling the dry-type transformer body, and meanwhile the gas flow in the box body can be accelerated.

[0021] Compared with the prior art, the outdoor dry-type transformer can cool the transformer when the box body grating is closed, effectively reduces the influence of high temperature on the dry-type transformer, and thus can guarantee the operation environment of the dry-type transformer and reduce the failure rate. BRIEF DESCRIPTION OF DRAWINGS

[0022] In order to more clearly illustrate the technical scheme in the embodiments of the utility model or the prior art, the drawings needed to be used in the embodiment or the prior art description will be briefly introduced as follows, and obviously, the drawings in the following description are only some embodiments described in the utility model, and for those skilled in the art, other drawings can be obtained according to these drawings without creative labor.

[0023] Figure 1 It is a sectional view of the outdoor dry-type transformer in an embodiment of the utility model.

[0024] Figure 2 It is Figure 1 It is a structure schematic view of A in the embodiment.

[0025] Figure 3 It is Figure 1 It is a structure schematic view of B in the embodiment.

[0026] Figure 4 It is a perspective view of the outdoor dry-type transformer in an embodiment of the utility model.

[0027] MAIN REFERENCE NUMERALS EXPLANATION

[0028] 1-dry-type transformer body, 2-box body, 201-grating frame, 3-cooling mechanism, 301-pump, 302-cooling box, 303-first baffle, 304-second baffle, 305-vent hole, 306-cooling liquid, 307-fins, 308-dry cotton, 309-net frame, 310-activated carbon ball, 311-backflow pipe, 312-straight pipe. DETAILED DESCRIPTION

[0029] To enable those skilled in the art to better understand the technical solutions of this utility model, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of this utility model.

[0030] like Figures 1 to 4 As shown, an outdoor dry-type transformer according to one embodiment of the present invention includes a dry-type transformer body 1, a housing 2, and a cooling mechanism 3.

[0031] The dry-type transformer body 1 used in this application is a commercially available product, therefore, its working principle will not be described in detail.

[0032] like Figures 1 to 4 As shown, the main body 1 of the dry-type transformer is housed inside the enclosure 2, and the enclosure 2 is equipped with several grid frames 201. The enclosure 2 can protect the main body 1 of the dry-type transformer, making it less susceptible to the influence of external weather conditions when used outdoors, and also making it less prone to human-caused damage.

[0033] When the grid frame 201 is open, it can dissipate heat from the dry-type transformer body 1, making it less prone to high temperatures. When the grid frame 201 is closed, it can effectively reduce the probability of external moisture entering the dry-type transformer body 1, ensuring the operating environment of the dry-type transformer body 1.

[0034] like Figures 1 to 4 As shown, the cooling mechanism 3 is connected to the top wall inside the housing 2. When the grid frame 201 is closed, the cooling mechanism 3 is used to cool the dry-type transformer body 1 inside the housing 2, so that heat does not easily accumulate inside the housing 2, thereby reducing the impact of high temperature on the dry-type transformer body 1 and reducing the failure rate of the dry-type transformer body 1.

[0035] The cooling mechanism 3 includes a vacuum pump 301, the outlet of which is connected to a cooling chamber 302. The vacuum pump 301 draws in gas through its inlet and discharges the gas through the cooling chamber 302.

[0036] In addition, a cooling component is installed inside the cooling box 302. The cooling component is used to cool the gas drawn by the air pump 301. The cooled gas flows back into the box 2, making the dry-type transformer body 1 less susceptible to high temperatures and ensuring the operating environment of the dry-type transformer body 1.

[0037] Specifically, the cooling assembly includes a first partition 303 and a second partition 304, and a cooling chamber, a flow chamber and a drying chamber are formed between the cooling box 302 and the first partition 303 and the second partition 304.

[0038] In addition, both the first partition 303 and the second partition 304 are provided with a number of vent holes 305, and the cooling chamber, the flow chamber and the drying chamber are connected through the vent holes 305. The gas in the cooling chamber enters the drying chamber through the vent holes 305, and then enters the drying chamber again through the vent holes 305.

[0039] like Figures 1 to 4 As shown, a cooling liquid 306 is provided in the cooling chamber, and the air outlet of the vacuum pump 301 is located in the cooling liquid 306. The liquid level of the cooling liquid 306 is lower than the height of the vent hole 305 on the first partition 303, which is used to reduce the temperature of the gas delivered by the vacuum pump 301, so as to achieve the purpose of reducing the temperature inside the box 2 in the future.

[0040] Among them, the side wall of the box 2 is connected with several fins 307. One end of the fin 307 passes through the cooling box 302 and is located in the cooling liquid 306 to reduce the temperature of the cooling liquid 306, so that the cooling liquid 306 is not easy to heat up, so as to ensure that the cooling liquid 306 can continuously reduce the temperature.

[0041] Preferably, the cooling liquid 306 is water, and the fins 307 are made of thermally conductive metal.

[0042] like Figures 1 to 4 As shown, a pair of drying cotton 308s are provided inside the drying chamber, and the vent 305 on the second partition 304 is located below the drying cotton 308s. The drying cotton 308s can be used to dry the cooled gas, so that the gas does not contain moisture.

[0043] The drying cotton 308 has a mesh frame 309 on its upper side, and activated carbon balls 310 are provided on the mesh frame 309. The activated carbon balls 310 can be used to further dry the moisture in the gas.

[0044] Preferably, the cooling box 302 has a hinged door on its side wall, which makes it easy for users to replenish the activated carbon balls 310 and replace the drying cotton 308.

[0045] The cooling chamber 302 is connected to a return pipe 311, and the other end of the return pipe 311 is connected to a straight pipe 312, which is equipped with several nozzles. The dried gas is ejected through the straight pipe 312 and the nozzles and re-enters the chamber 2 to accelerate the gas flow inside the chamber 2, so as to cool the dry-type transformer body 1 and prevent the dry-type transformer body 1 from overheating when the grid frame 201 is closed.

[0046] Preferably, the spray head is arranged on the inner side wall of the box 2 and corresponds to the dry-type transformer body 1, the gas sprayed by the spray head can blow to the dry-type transformer body 1, so as to cool the dry-type transformer body 1 and accelerate the flow of the gas in the box 2.

[0047] In use, the grid frame 201 is closed, and the air pump 301 is operated to draw the gas in the box 2 and send the gas to the cooling liquid 306 in the cooling cavity through the gas outlet, so as to cool the gas by the cooling liquid 306.

[0048] The gas in the cooling cavity enters the flow cavity through the air hole 305, and then enters the drying cavity through the air hole 305, and is dried under the action of the drying cotton 308 and the activated carbon ball 310, so as to remove the moisture in the gas and prevent the moisture from affecting the dry-type transformer body 1.

[0049] Finally, the gas in the drying cavity enters the straight pipe 312 through the return pipe 311 and is sprayed by the spray head. The gas sprayed by the spray head can blow to the dry-type transformer body 1, so as to cool the dry-type transformer body 1 and accelerate the flow of the gas in the box 2, so that the temperature of the dry-type transformer body 1 is not too high when the grid frame 201 is closed, and the operation environment of the dry-type transformer body 1 is ensured.

[0050] It is apparent for those skilled in the art that the present application is not limited to the details of the above exemplary embodiments, but can be implemented in other concrete forms without departing from the spirit or essential characteristics of the present application. Therefore, the embodiments should be considered as exemplary and non-limiting, and the scope of the present application is defined by the appended claims rather than the above description, and all changes falling within the meaning and range of equivalent elements of the claims are intended to be embraced in the present application. Any reference signs in the claims should not be considered as limiting the claims involved.

[0051] In addition, it should be understood that, although the present specification is described in terms of embodiments, not every embodiment contains only one independent technical solution, and the description of the specification is only for the sake of clarity, and those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can be combined appropriately to form other embodiments that those skilled in the art can understand.

Claims

1. An outdoor dry-type transformer, characterized in that, include: Dry-type transformer body; The enclosure, in which the main body of the dry-type transformer is housed, and the enclosure is provided with several grid frames; A cooling mechanism is connected to the top wall of the box. The cooling mechanism includes an air pump, the air outlet of which is connected to a cooling box. The cooling box contains cooling components.

2. The outdoor dry-type transformer according to claim 1, characterized in that, The cooling assembly includes a first partition and a second partition, and a cooling chamber, a flow chamber and a drying chamber are formed between the cooling box and the first and second partitions.

3. An outdoor dry-type transformer according to claim 2, characterized in that, The first and second partitions are each provided with a number of ventilation holes, and the cooling chamber, flow chamber and drying chamber are connected through the ventilation holes.

4. An outdoor dry-type transformer according to claim 3, characterized in that, The cooling chamber contains cooling liquid, and the outlet of the air pump is located in the cooling liquid. The level of the cooling liquid is lower than the height of the vent hole on the first partition.

5. An outdoor dry-type transformer according to claim 4, characterized in that, The side wall of the box is connected to several fins, one end of which passes through the cooling box and is placed in the cooling liquid.

6. An outdoor dry-type transformer according to claim 5, characterized in that, The cooling liquid is water, and the fins are made of thermally conductive metal.

7. An outdoor dry-type transformer according to claim 2, characterized in that, The drying chamber is equipped with a pair of drying cotton, and the ventilation holes on the second partition are located on the lower side of the drying cotton.

8. An outdoor dry-type transformer according to claim 7, characterized in that, The drying cotton is provided with a mesh frame on its upper side, and activated carbon balls are provided on the mesh frame.

9. An outdoor dry-type transformer according to claim 8, characterized in that, The cooling box is connected to a return pipe, and the other end of the return pipe is connected to a straight pipe, which is equipped with several nozzles.

10. An outdoor dry-type transformer according to claim 9, characterized in that, The nozzle is located on the inner side wall of the box and corresponds to the main body of the dry-type transformer.

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