An outdoor waterproof dry-type transformer

Abstract

The utility model relates to the technical field of outdoor waterproof dry-type transformers, specifically to an outdoor waterproof dry-type transformer, comprising: a dry-type transformer body, which is arranged in a waterproof box of the dry-type transformer; the beneficial effects are: air enters the waterproof box of the dry-type transformer through an air inlet, forms an airflow under the action of a self-contained heat dissipation fan to take away the heat emitted by the dry-type transformer body, and then enters between a heat dissipation plate and the top of an inner wall of the waterproof box of the dry-type transformer; the air enters the waterproof box of the dry-type transformer from an air inlet and forms a second airflow under the action of the air inlet fan, and the hot air entering between the heat dissipation plate and the top of the inner wall of the waterproof box of the dry-type transformer is blown out of the waterproof box of the dry-type transformer from an exhaust port and blown away from the exhaust duct, thereby forming a good heat dissipation duct and enhancing the heat dissipation effect; the exhaust port is still arranged on the side of the waterproof box of the dry-type transformer, and will not damage the water discharge effect of the waterproof box of the dry-type transformer.

Description

Technical Field

[0001] The utility model relates to the technical field of outdoor waterproof dry-type transformers, in particular to an outdoor waterproof dry-type transformer. Background Art

[0002] A dry-type transformer is a special transformer whose core and winding are not immersed in insulating oil. Its working principle is based on the law of electromagnetic induction, that is, a changing magnetic field will generate an induced electromotive force. Dry-type transformers have many advantages, such as good fire resistance, low loss, low noise, no pollution, good insulation, good mechanical strength, moisture resistance, economical installation, small size, light weight, automatic temperature monitoring and protection, etc. Therefore, dry-type transformers are usually selected when it is necessary to set up transformers outdoors.

[0003] In the prior art, in order to prevent the dry-type transformer from being wetted by rain outdoors, the dry-type transformer is usually installed in a waterproof box of the dry-type transformer, and an air inlet is opened at the bottom of the waterproof box of the dry-type transformer, and a heat dissipation hole is opened on the side of the waterproof box of the dry-type transformer for heat dissipation of the dry-type transformer.

[0004] However, the cooling fan of the dry-type transformer is usually installed at the bottom of the transformer body. Coupled with the physical law of hot air rising, a large amount of heat will accumulate at the top of the waterproof box of the dry-type transformer. The heat dissipation holes opened on the side cannot form a good air duct with the air inlet holes opened at the bottom, resulting in poor heat dissipation efficiency. Utility Model Content

[0005] The purpose of the utility model is to provide an outdoor waterproof dry-type transformer to solve the problems raised in the above background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an outdoor waterproof dry-type transformer, comprising: a dry-type transformer body, the dry-type transformer body is arranged in a waterproof box of the dry-type transformer, a self-contained heat dissipation fan is arranged at the bottom end of the dry-type transformer body, an air inlet is opened at the bottom end of the waterproof box of the dry-type transformer, a base is fixed at the bottom end of the waterproof box of the dry-type transformer, a top cover is arranged at the top end of the waterproof box of the dry-type transformer, a heat dissipation plate is fixed in the inner wall of the waterproof box of the dry-type transformer, heat dissipation holes are opened on the surface of the heat dissipation plate, an air inlet is opened at one end of the waterproof box of the dry-type transformer, an air inlet fan is arranged in the air inlet, an exhaust port is opened at the other end of the waterproof box of the dry-type transformer, and an exhaust duct is arranged at the position where the exhaust port is opened on the surface of the waterproof box of the dry-type transformer.

[0007] Preferably, the air inlet and the air outlet are both arranged above the heat sink, and the heat sink is arranged above the dry-type transformer body, and a space is left between the top end of the heat sink and the bottom end of the top cover.

[0008] Preferably, a side eave is fixed on the surface of one end of the side surface of the top cover close to the air inlet, and a slope is arranged on the top end of the side eave.

[0009] Preferably, the exhaust duct is an "L"-shaped tube body, and a plurality of groups of water leakage holes are opened at the bottom end of the exhaust duct.

[0010] Preferably, the heat dissipation holes are arranged in several groups, and the groups of heat dissipation holes are evenly distributed on the surface of the heat dissipation plate. Waterproof columns are arranged at the positions where the heat dissipation holes are opened on the top of the heat dissipation plate, and the waterproof columns are in an annular column structure.

[0011] Preferably, drainage holes are provided on the side of the waterproof box of the dry-type transformer, and several groups of drainage holes are provided. The bottom ends of the drainage holes are flush with the top ends of the heat sinks, and canopies are provided at the positions where the drainage holes are provided on the outer side of the waterproof box of the dry-type transformer.

[0012] Compared with the prior art, the beneficial effects of the utility model are:

[0013] The utility model provides an outdoor waterproof dry-type transformer, in which the waterproof box of the dry-type transformer is raised by a base, and the air at the bottom of the waterproof box of the dry-type transformer enters the waterproof box of the dry-type transformer through the air inlet hole, and forms an airflow to blow on the surface of the dry-type transformer body under the action of the self-contained heat dissipation fan, and takes away the heat emitted by the dry-type transformer body, and then enters the space formed between the heat dissipation plate and the top of the inner wall of the waterproof box of the dry-type transformer from the heat dissipation hole, and the air at the side of the waterproof box of the dry-type transformer enters the waterproof box of the dry-type transformer from the air inlet again and forms a second airflow under the action of the air inlet fan, and the hot air entering between the heat dissipation plate and the top of the inner wall of the waterproof box of the dry-type transformer is blown out of the waterproof box of the dry-type transformer from the exhaust port and blown away from the exhaust duct, thereby forming a good heat dissipation duct and enhancing the heat dissipation effect, and the exhaust port is still arranged on the side of the waterproof box of the dry-type transformer, and will not damage the water discharge effect of the waterproof box of the dry-type transformer. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the structure of the utility model;

[0015] Figure 2 Schematic diagram of the air inlet structure;

[0016] Figure 3 This is a schematic diagram of the cross-sectional structure of the utility model;

[0017] Figure 4 for Figure 3 A schematic diagram of the structure enlargement in the middle;

[0018] Figure 5 for Figure 3 Enlarged schematic diagram of the structure at point B in the middle.

[0019] In the figure: dry-type transformer waterproof box 1, top cover 2, side eaves 3, exhaust duct 4, air inlet 5, air inlet fan 6, drainage hole 7, canopy 8, heat sink 9, heat dissipation hole 10, waterproof column 11, exhaust vent 12, water leakage hole 13, dry-type transformer body 14, built-in cooling fan 15, air inlet 16, base 17. DETAILED DESCRIPTION

[0020] In order to make the purpose and technical solution of the utility model clearly and completely described, and the advantages more clearly understood, the embodiments of the utility model are further described in detail in conjunction with the accompanying drawings. It should be understood that the specific embodiments described here are part of the embodiments of the utility model, not all of the embodiments, and are only used to explain the embodiments of the utility model, and are not used to limit the embodiments of the utility model. All other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0021] Embodiment 1

[0022] See also Figures 1 to 5 The utility model provides a technical solution: an outdoor waterproof dry-type transformer, comprising: a dry-type transformer body 14, the dry-type transformer body 14 is arranged in a dry-type transformer waterproof box 1, a self-contained cooling fan 15 is arranged at the bottom of the dry-type transformer body 14, an air inlet 16 is opened at the bottom of the dry-type transformer waterproof box 1, a base 17 is fixed at the bottom of the dry-type transformer waterproof box 1, a top cover 2 is arranged at the top of the dry-type transformer waterproof box 1, and a heat sink 9 is fixed in the inner wall of the dry-type transformer waterproof box 1 , heat dissipation holes 10 are provided on the surface of the heat dissipation plate 9, an air inlet 5 is provided at one end of the dry-type transformer waterproof box 1, an air inlet fan 6 is arranged in the air inlet 5, an exhaust port 12 is provided at the other end of the dry-type transformer waterproof box 1, an exhaust duct 4 is arranged at the position where the exhaust port 12 is provided on the surface of the dry-type transformer waterproof box 1, the air inlet 5 and the exhaust port 12 are both arranged above the heat dissipation plate 9, the heat dissipation plate 9 is arranged above the dry-type transformer body 14, and a space is left between the top end of the heat dissipation plate 9 and the bottom end of the top cover 2.

[0023] In actual use, the waterproof box 1 of the dry-type transformer is padded by the base 17, and the air at the bottom of the waterproof box 1 of the dry-type transformer enters the waterproof box 1 of the dry-type transformer through the air inlet 16. Under the action of the built-in heat dissipation fan 15, an airflow is formed to blow on the surface of the dry-type transformer body 14, and the heat emitted by the dry-type transformer body 14 is taken away. Then, the air enters the space formed between the heat dissipation plate 9 and the top of the inner wall of the waterproof box 1 of the dry-type transformer from the heat dissipation hole 10. The air on the side of the waterproof box 1 of the dry-type transformer enters the waterproof box 1 of the dry-type transformer from the air inlet 5 and forms a second airflow under the action of the air inlet fan 6, and the hot air entering between the heat dissipation plate 9 and the top of the inner wall of the waterproof box 1 of the dry-type transformer is blown out of the waterproof box 1 of the dry-type transformer from the exhaust port 12 and blown away from the exhaust duct 4, thereby forming a good heat dissipation air duct, and the exhaust port 12 is still arranged on the side of the waterproof box 1 of the dry-type transformer, which will not destroy the water discharge effect of the waterproof box 1 of the dry-type transformer.

[0024] Embodiment 2

[0025] On the basis of the first embodiment, in order to enhance the water discharge function of the waterproof box 1 of the dry-type transformer, a side eave 3 is fixed on the surface of one end of the side of the top cover 2 close to the air inlet 5, and a slope is arranged on the top of the side eave 3. The exhaust duct 4 is an "L"-shaped tube body, and a plurality of groups of water leakage holes 13 are opened at the bottom end of the exhaust duct 4.

[0026] The side eaves 3 can provide a water discharge function for the air inlet 5 to prevent rainwater from being blown by the wind and being blown into the waterproof box 1 of the dry-type transformer from the air inlet 5 at an angle. The exhaust duct 4 is L-shaped and can also prevent rainwater from being blown into the waterproof box 1 of the dry-type transformer from the exhaust port 12 at an angle. At the same time, a plurality of groups of water leakage holes 13 are provided at the bottom end of the exhaust duct 4. After rainwater enters the exhaust duct 4, it will leak out from the water leakage holes 13 instead of entering the exhaust port 12.

[0027] Embodiment 3

[0028] On the basis of the second embodiment, in order to prevent rainwater from damaging the dry-type transformer body 14 after entering the waterproof box 1 of the dry-type transformer from the air inlet 5 and the air outlet 12 in extreme cases, a plurality of groups of heat dissipation holes 10 are provided, and the plurality of groups of heat dissipation holes 10 are evenly distributed on the surface of the heat dissipation plate 9. Waterproof columns 11 are provided at the positions where the heat dissipation holes 10 are provided on the top of the heat dissipation plate 9. The waterproof columns 11 are in an annular column structure. Drain holes 7 are provided on the side of the waterproof box 1 of the dry-type transformer. The drainage holes 7 are provided in a plurality of groups. The bottom end of the drainage hole 7 is flush with the top of the heat dissipation plate 9. A canopy 8 is provided at the positions where the drainage holes 7 are provided on the outer side of the waterproof box 1 of the dry-type transformer.

[0029] When in extreme cases, rainwater enters the waterproof box 1 of the dry-type transformer from the air inlet 5 and the air outlet 12, the rainwater falls on the top of the heat sink 9, and is blocked by the waterproof column 11 on the top of the heat sink 9 so as not to drip from the heat dissipation hole 10 and cause damage to the dry-type transformer body 14. At the same time, the rainwater on the top of the heat sink 9 will flow out of the waterproof box 1 of the dry-type transformer from the drainage hole 7, and will not accumulate on the top of the heat sink 9. In addition, a canopy 8 is fixed at the position where the drainage hole 7 is opened on the surface of the waterproof box 1 of the dry-type transformer to prevent rainwater from entering the waterproof box 1 of the dry-type transformer from the drainage hole 7.

[0030] In actual use, the dry-type transformer waterproof box 1 is raised by the base 17, and the air at the bottom of the dry-type transformer waterproof box 1 enters the dry-type transformer waterproof box 1 through the air inlet 16. Under the action of the built-in heat dissipation fan 15, an air flow is formed to blow to the surface of the dry-type transformer body 14, taking away the heat emitted by the dry-type transformer body 14, and then enters the space formed between the heat dissipation plate 9 and the top of the inner wall of the dry-type transformer waterproof box 1 from the heat dissipation hole 10. The air on the side of the dry-type transformer waterproof box 1 enters the dry-type transformer waterproof box 1 from the air inlet 5 and forms a second air flow under the action of the air inlet fan 6, blowing the hot air entering between the heat dissipation plate 9 and the top of the inner wall of the dry-type transformer waterproof box 1 out of the dry-type transformer waterproof box 1 from the exhaust port 12 and away from the exhaust duct 4, thereby forming a good heat dissipation duct, and the exhaust port 12 is still arranged on the side of the dry-type transformer waterproof box 1, which will not destroy the water discharge effect of the dry-type transformer waterproof box 1; the side eaves 3 can be The air inlet 5 provides a water discharge function to prevent rainwater from being blown by the wind and being blown into the waterproof box 1 of the dry-type transformer from the air inlet 5. The exhaust duct 4 is L-shaped and can also prevent rainwater from being blown into the waterproof box 1 of the dry-type transformer from the exhaust duct 12. At the same time, a plurality of groups of water leakage holes 13 are opened at the bottom of the exhaust duct 4. After the rainwater enters the exhaust duct 4, it will leak out from the water leakage holes 13 instead of entering the exhaust duct 12. In extreme cases, rainwater enters the dry-type transformer from the air inlet 5 and the exhaust duct 12. After entering the waterproof box 1, rainwater falls on the top of the heat sink 9 and is blocked by the waterproof column 11 on the top of the heat sink 9. It will not drip from the heat dissipation hole 10 to cause damage to the dry-type transformer body 14. At the same time, the rainwater on the top of the heat sink 9 will flow out of the waterproof box 1 of the dry-type transformer from the drainage hole 7, and will not accumulate on the top of the heat sink 9. In addition, a canopy 8 is fixed at the position where the drainage hole 7 is opened on the surface of the waterproof box 1 of the dry-type transformer to prevent rainwater from entering the waterproof box 1 of the dry-type transformer from the drainage hole 7.

[0031] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An outdoor waterproof dry-type transformer, comprising: A dry-type transformer body (14) is provided in a dry-type transformer waterproof box (1); a self-contained heat dissipation fan (15) is provided at the bottom of the dry-type transformer body (14); an air inlet (16) is provided at the bottom of the dry-type transformer waterproof box (1); a base (17) is fixed at the bottom of the dry-type transformer waterproof box (1); a top cover (2) is provided at the top of the dry-type transformer waterproof box (1); the dry-type transformer waterproof box (1) is characterized in that a heat dissipation plate (9) is fixed in the inner wall of the dry-type transformer waterproof box (1); heat dissipation holes (10) are provided on the surface of the heat dissipation plate (9); an air inlet (5) is provided at one end of the dry-type transformer waterproof box (1); an air inlet fan (6) is provided in the air inlet (5); an air outlet (12) is provided at the other end of the dry-type transformer waterproof box (1); an exhaust duct (4) is provided at the position where the air outlet (12) is provided on the surface of the dry-type transformer waterproof box (1).

2. An outdoor waterproof dry-type transformer according to claim 1, characterized in that: The air inlet (5) and the air outlet (12) are both arranged above the heat sink (9), and the heat sink (9) is arranged above the dry-type transformer body (14), and a space is left between the top end of the heat sink (9) and the bottom end of the top cover (2).

3. An outdoor waterproof dry-type transformer according to claim 2, characterized in that: A side eave (3) is fixed on the surface of one end of the side of the top cover (2) close to the air inlet (5), and a slope is arranged on the top end of the side eave (3).

4. The outdoor waterproof dry-type transformer according to claim 1, characterized in that: The exhaust duct (4) is an "L"-shaped tube body, and a plurality of groups of water leakage holes (13) are provided at the bottom end of the exhaust duct (4).

5. The outdoor waterproof dry-type transformer according to claim 1, characterized in that: The heat dissipation holes (10) are arranged in a plurality of groups, and the plurality of groups of heat dissipation holes (10) are evenly distributed on the surface of the heat dissipation plate (9). Waterproof columns (11) are arranged at the top of the heat dissipation plate (9) at the positions where the heat dissipation holes (10) are opened, and the waterproof columns (11) are in the form of an annular column structure.

6. The outdoor waterproof dry-type transformer according to claim 1, characterized in that: The side of the dry-type transformer waterproof box (1) is provided with drainage holes (7), and the drainage holes (7) are arranged in a plurality of groups. The bottom ends of the drainage holes (7) are flush with the top ends of the heat sink (9), and the positions where the drainage holes (7) are arranged on the outer side of the dry-type transformer waterproof box (1) are provided with rain sheds (8).

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