CN219958700U - Protective outer cover of dry-type transformer - Google Patents

Abstract

The utility model relates to the technical field of dry-type transformer protection, in particular to a dry-type transformer protection outer cover, which comprises an outer shell and an inner shell, wherein a switchable protective door is arranged on one side of the outer shell, a slotted hole is formed in the upper end face of the outer shell, a fan box is arranged on the upper end face of the outer shell, an air inlet fan is arranged in the fan box, and air outlets are formed in the bottoms of two side walls of the outer shell adjacent to the protective door; the inner shell is arranged at the top of the outer shell and on two sides adjacent to the protective door, an air channel is formed between the inner shell and the inner shell, the slot holes and the air outlets are communicated with the air channel, radiating fins connected with the inner shell are arranged on two sides of the air channel, and ventilation holes are formed in two sides of the inner shell adjacent to the protective door. Air outside the protective outer cover enters from a high position, air inside the protective outer cover is discharged from a low position, and the humidity in the protective outer cover is reduced while heat is dissipated.

Description

Protective outer cover of dry-type transformer

Technical Field

The utility model relates to the technical field of dry-type transformer protection, in particular to a dry-type transformer protection outer cover.

Background

The dry type transformer is widely used in places such as local illumination, high-rise buildings, airports and wharf CNC mechanical equipment, and the like, simply said dry type transformer means a transformer with an iron core and windings not immersed in insulating oil, the outer side of the dry type transformer can be required to be provided with a protective outer cover to protect the whole transformer, and along with the wide application of the dry type transformer, the application of the protective outer cover of the dry type transformer is also wide.

The dry-type transformer protective housing should have a heat-dissipating and moisture-proof function so as to ensure the normal operation of the dry-type transformer. However, the existing dry-type transformer protective housing mostly adopts bottom air inlet, and air in the housing flows upwards and is discharged, so that heat generated by the transformer is taken away, and the transformer dissipates heat rapidly. For example, CN218100867U discloses a medium dry type transformer, in which a square hole for external air to enter the protecting shell is formed at the bottom of the protecting shell, the motor and the strip-shaped plate are formed at the top of the protecting shell, the external air enters the bottom of the protecting shell through the square hole, the motor works to drive two groups of strip-shaped plates to rotate, and the two groups of strip-shaped plates rotate to discharge the hot air on the upper part of the protecting shell to the outside of the protecting shell. Because in the air, the moisture content of the low position is always higher than that of the high position, and the outside air is brought into the bottom of the protective shell, and meanwhile, the wet air with relatively higher humidity is also brought into the bottom of the protective shell, so that the dampproof effect of the protective shell is affected.

Disclosure of Invention

The utility model aims to overcome the defects of the prior art and provide the dry-type transformer protective outer cover with good heat dissipation and moisture resistance effects.

The dry-type transformer protective outer cover comprises an outer shell and an inner shell, wherein a protective door capable of being opened and closed is arranged on one side of the outer shell, a slotted hole is formed in the upper end face of the outer shell, a fan box is arranged on the upper end face of the outer shell, an air inlet fan is arranged in the fan box, and air outlets are formed in the bottoms of two side walls of the outer shell, which are adjacent to the protective door;

the inner shell is arranged at the top of the outer shell and on two sides adjacent to the protective door, an air channel is formed between the inner shell and the inner shell, the slot holes and the air outlets are communicated with the air channel, radiating fins connected with the inner shell are arranged on two sides of the air channel, and ventilation holes are formed in two sides of the inner shell adjacent to the protective door.

Further, a plurality of cooling fins located on the same side are vertically arranged side by side at equal intervals, and a plurality of ventilation holes are formed in the connecting positions of each cooling fin and the inner shell at equal intervals along the length direction of the cooling fin.

Further, still include outer drying cabinet and interior drying cabinet, outer drying cabinet set up in the shell outside just is located the air outlet top, interior drying cabinet set up in the shell is internal and be located the wind channel outside, outer drying cabinet and interior drying cabinet all adopt ventilative netted panel to constitute, just outer drying cabinet and interior drying cabinet all activity are provided with the upper cover, all fill in outer drying cabinet and the interior drying cabinet and have the drier.

Furthermore, the guard gate is provided with an observation hole, an observation window is arranged in the observation hole, and the observation window is made of transparent materials.

Furthermore, a plurality of air inlets are formed in the top of the protective door, and the air inlets are louver air inlets.

Further, the upper shielding cover is arranged on the upper end face of the outer shell and completely covers the upper end face of the outer shell. Through setting up the cover that shields, can prevent effectively that the deposit dust on the shell body up end from, avoid the dust to get into the wind channel through the slotted hole.

Further, the upper shielding cover is of a sloping roof structure.

Further, the outer shell bottom is provided with the lifting support leg, so that the air permeability of the outer shell bottom is increased, and the dampproof effect is enhanced.

Compared with the prior art, the utility model has the beneficial effects that:

the air inlet fan is started when the dry type transformer protective outer cover is used, air outside the protective outer cover enters the air channel through the slot holes and is discharged to two sides through the air outlet at the bottom of the outer cover, the air flow speed and the pressure of the air in the air channel are low, a pressure difference is generated between the air flow speed and the space where the dry type transformer is located, air in the protective outer cover enters the air channel through the air holes, the air flows through the cooling fins and is discharged through the air outlet, heat in the protective outer cover is taken out, high-efficiency heat dissipation is achieved, and external air enters the protective outer cover through the air inlet formed in the protective door for air supplementing.

Air outside the protective outer cover enters from a high position, air inside the protective outer cover is discharged from a low position, and the humidity in the protective outer cover is reduced while heat is dissipated.

According to the dry-type transformer protective outer cover, the outer drying box and the inner drying box are arranged, so that the humidity of air at the inner side and the outer side of the protective outer cover can be effectively reduced, and the dampproof effect of the protective outer cover is enhanced.

Drawings

The accompanying drawings are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate the utility model and together with the embodiments of the utility model, serve to explain the utility model. In the drawings:

fig. 1 is a schematic diagram of the whole structure of a dry-type transformer protective housing according to an embodiment of the present utility model.

Fig. 2 is a schematic diagram illustrating an internal structure of a dry-type transformer protection housing according to an embodiment of the present utility model.

Fig. 3 is a schematic view of a part of a protective cover of a dry-type transformer according to an embodiment of the present utility model.

Fig. 4 is a schematic view of a second view of the dry-type transformer protective housing of fig. 3.

Fig. 5 is a schematic view of a third view of the dry-type transformer protective housing of fig. 3.

Fig. 6 is a schematic view of the installation of the inner drying oven in an embodiment of the present utility model.

In the figure: 1. an outer housing; 2. a protective door; 3. a slot hole; 4. a fan box; 5. an air outlet; 6. an inner housing; 7. an air duct; 8. a heat sink; 9. a vent hole; 10. an outer drying box; 11. an inner drying box; 12. an observation window; 13. an air inlet; 14. an upper shielding cover; 15. raising the support legs; 16. a drainage plate; 17. a support plate; 18. a dry-type transformer.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

As shown in fig. 1 and 2, the dry-type transformer protection cover in the present embodiment includes an outer case 1 and an inner case 6. One side of the outer shell 1 is provided with a protective door 2 capable of being opened and closed, the top of the protective door 2 is provided with an air inlet 13, the upper end face of the outer shell 1 is provided with a slotted hole 3, a fan box 4 is arranged above the upper end face corresponding to the slotted hole 3, an air inlet fan is arranged in the fan box 4, and air outlets 5 are formed in the bottoms of two adjacent side walls of the outer shell 1 and the protective door 2. The inner shell 6 is arranged at the inner top of the outer shell 1 and on two sides adjacent to the protective door 2, the bottom of the inner shell 6 extends to the inner bottom of the outer shell 1, the inner shell 6 is connected with the outer shell 1, an air duct 7 is formed between the inner shell 6 and the outer shell 1, and the slotted hole 3 at the top of the outer shell 1 and the air outlets 5 at the bottoms of the two sides are communicated with the air duct 7. The dry-type transformer 18 is mounted on the inside lower surface of the outer case 1.

In this embodiment, as shown in fig. 3, the cooling fins 8 are disposed on two sides of the interior of the air duct 7, and the ventilation holes 9 are formed on two sides of the inner housing 6 adjacent to the protection door 2. Specifically, as shown in fig. 4 and 5, the plurality of cooling fins 8 located on the same side are vertically arranged side by side at equal intervals, the cooling fins 8 are perpendicular to the side wall of the outer casing 1 where the air outlet 5 is located, and the connecting part of the inner casing 6 and each cooling fin 8 is provided with a plurality of ventilation holes 9 at equal intervals along the length direction of the cooling fin 8, so that the air inlet ventilation holes 9 in the protective outer cover enter the air duct 7 to be in contact with the cooling fins 8 for heat exchange. Preferably, the width of the heat sink 8 is smaller than the thickness of the air duct 7, that is, one side of the heat sink 8 is fixedly connected to the inner housing 6 and the opposite side is spaced apart from the outer housing 1 by a certain distance.

In the dry-type transformer protection housing in this embodiment, slot hole 3, air inlet fan and air inlet 13 all set up in the eminence, air outlet 5 sets up in the eminence, inner shell 6 sets up in outer shell 1 and forms wind channel 7 with outer shell 1 combination, the air inlet fan starts, the outside air of protection housing gets into wind channel 7 through slot hole 3, to both sides, by the air outlet 5 discharge in outer shell 1 bottom, because the air inlet fan opens, the air velocity of air in wind channel 7 is fast, pressure differential with the space that dry-type transformer 18 is located, the inside air of protection housing gets into wind channel 7 through ventilation hole 9, the heat that flows through fin 8 is discharged through air outlet 5, take out the inside heat of protection housing, the high-efficient heat dissipation, the outside air gets into the protection housing through air inlet 13 that sets up on the protection door 2, make up in the air supply. Air outside the protective outer cover enters from a high position, air inside the protective outer cover is discharged from a low position, and the humidity in the protective outer cover is reduced while heat is dissipated.

The dry-type transformer protection housing in this embodiment further includes an outer drying box 10 and an inner drying box 11, the outer drying box 10 is disposed outside the outer casing 1 and is fixed above the air outlet 5, the inner drying box 11 is disposed inside the outer casing 1 and is located outside the air duct 7, and preferably, as shown in fig. 6, the inner drying box 11 is fixed inside the protection door 2. The outer drying box 10 and the inner drying box 11 are made of breathable net-shaped plates, an upper cover is movably arranged on the outer drying box 10 and the inner drying box 11, drying agents are filled in the outer drying box 10 and the inner drying box 11, and the drying agents can be replaced after being used for a period of time. Specifically, the upper covers of the outer drying box 10 and the inner drying box 11 may adopt a side hinged, clamped or other movable connection mode, so long as the opening and closing can be realized, thereby replacing the drying agent in the outer drying box 10 and the inner drying box 11.

Through setting up outer drying cabinet 10 and interior drying cabinet 11, the drier in the interior drying cabinet 11 can dehumidify the inside air of protection dustcoat, and the outside air of protection dustcoat can be dehumidified to outer drying cabinet 10, makes the dry-type transformer 18 in protection dustcoat and the protection dustcoat be in a relatively dry environment, strengthens the dehumidification effect of protection dustcoat. The bottom of the outer shell 1 is provided with lifting support legs 15, so that the air permeability of the bottom of the outer shell 1 is increased, and the dampproof effect is enhanced.

The dry-type transformer protection housing in this embodiment, as shown in fig. 1, further includes an upper shielding cover 14, where the upper shielding cover 14 is fixed above the upper end surface of the outer casing 1 by a support plate 17 or a support column, and the upper shielding cover 14 can completely cover the upper end surface of the outer casing 1, so as to effectively prevent dust from depositing on the upper end surface of the outer casing 1, and effectively prevent dust from entering the air duct 7 through the slot hole 3. Preferably, the upper shield cover 14 is of a pitched roof construction.

In this embodiment, the plurality of air inlets 13 formed at the top of the protection door 2 are all louver air inlets, and the air inlets 13 are arranged into the structure of louver air inlets, so that the louver air inlets have better ventilation and dust prevention effects. Preferably, a drainage plate 16 corresponding to the ventilation holes 9 one by one is fixed on one side of the inner shell 6 close to the cooling fins 8, the top of the drainage plate 16 is fixed above the ventilation holes 9, and by arranging the drainage plate 16, air in two sides of the air duct 7 is helped to flow downwards and flow out through the air outlet 5 in an accelerating way, so that a pressure difference is generated between the air duct 7 and the inside of the protective shell, and the air in the protective shell smoothly enters the air duct 7 through the ventilation holes 9.

In this embodiment, as shown in fig. 1, the protective door 2 is provided with an observation hole, in which an observation window 12 is installed, and the observation window 12 is made of a transparent plate, preferably tempered glass. By providing the observation window 12 in the protection door 2, the operation condition of the dry type transformer 18 in the protection cover can be observed through the observation window 12.

The working principle of the dry-type transformer protective housing in the embodiment is as follows:

when the air inlet fan is started in use, air outside the protective outer cover enters the air duct 7 through the slot holes 3 and is discharged from the air outlet 5 at the bottom of the outer shell 1 to two sides, the air holes 9 are formed in the areas, corresponding to the inner shell 6, of the radiating fins 8, the air inlet fan is started, the air flow speed in the air duct 7 is low in pressure, pressure difference is generated between the air inlet fan and the space where the dry type transformer 18 is located, air inside the protective outer cover enters the air duct 7 through the air holes 9, flows through the radiating fins 8 and is discharged through the air outlet 5, heat inside the protective outer cover is taken out, efficient heat dissipation is achieved, and external air enters the protective outer cover through the air inlet 13 formed in the protective door 2 to supplement air. Air outside the protective outer cover enters from a high position, air inside the protective outer cover is discharged from a low position, and the humidity in the protective outer cover is reduced while heat is dissipated. The outer drying box 10 and the inner drying box 11 can effectively reduce the humidity of air at the inner side and the outer side of the protective outer cover, and enhance the dampproof effect of the protective outer cover.

Finally, it should be noted that: the foregoing description is only a preferred embodiment of the present utility model, and the present utility model is not limited thereto, but it is to be understood that modifications and equivalents of some of the technical features described in the foregoing embodiments may be made by those skilled in the art, although the present utility model has been described in detail with reference to the foregoing embodiments. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model should be included in the protection scope of the present utility model.

Claims (7)

1. A dry-type transformer protective housing, comprising:

the novel air conditioner comprises an outer shell body (1), wherein a protective door (2) capable of being opened and closed is arranged on one side of the outer shell body (1), an air inlet (13) is formed in the top of the protective door (2), a slotted hole (3) is formed in the upper end face of the outer shell body (1), a fan box (4) is arranged at the top of the outer shell body, an air inlet fan is arranged in the fan box (4), and air outlets (5) are formed in the bottoms of two side walls, adjacent to the protective door (2), of the outer shell body (1);

the inner shell body (6), inner shell body (6) set up in top in shell body (1) and with the both sides that protection door (2) are adjacent, form wind channel (7) between inner shell body (6) and shell body (1), slotted hole (3) and air outlet (5) all with wind channel (7) inside intercommunication, wind channel (7) inside both sides be provided with fin (8) that inner shell body (6) are connected, ventilation hole (9) have been seted up with the both sides that protection door (2) are adjacent to inner shell body (6).

2. Dry-type transformer protective housing according to claim 1, characterized in that a plurality of cooling fins (8) are arranged vertically side by side at equal intervals, and a plurality of ventilation holes (9) are arranged at equal intervals along the length direction of the cooling fins (8) at the connection position of each cooling fin (8) and the inner housing (6).

3. The dry transformer protective outer cover according to claim 2, further comprising an outer drying box (10) and an inner drying box (11), wherein the outer drying box (10) is arranged outside the outer shell (1) and above the air outlet (5), the inner drying box (11) is arranged in the outer shell (1) and outside the air duct (7), and the drying agent is filled in the outer drying box (10) and the inner drying box (11).

4. A dry transformer protective cover according to claim 3, characterized in that the protective door (2) is provided with an observation hole, and an observation window (12) is arranged in the observation hole.

5. The dry transformer protective housing according to claim 1, further comprising an upper shielding cover (14), the upper shielding cover (14) being provided on an upper end face of the outer housing (1) and entirely covering the upper end face of the outer housing (1).

6. The dry transformer protective housing according to claim 5, wherein the upper shielding cover (14) is of a pitched roof construction.

7. Dry transformer protective housing according to claim 1, characterized in that the bottom of the outer housing (1) is provided with lifting feet (15).