KR200429208Y1 - Dry Type Pole Mounted Transfromer For Outdoor - Google Patents

Abstract

The present invention relates to an outdoor dry column transformer, and more particularly, to the safety and durability of electrical insulation by applying a vacuum pressure impregnation process to the primary and secondary coils constituting the outdoor dry column transformer. Secure the safety against electromechanical force in case of short circuit accident by the coil support part.The transformer enclosure is divided into the upper part, the middle part and the lower part.The upper part of the upper part is inclined and the rainwater is not accumulated. Secondary bushings are mounted on the side, and the second part can be mounted on the side, and the stop part is designed to maximize the cooling efficiency, and the air filter is installed inside the transformer core to prevent the inflow of insects and foreign substances. Install a slide type ventilator on the outside. The lower part also installs an air filter.

The present invention is wound around a bobbin formed on the inside so as to be wound around a pair of transformer cores, forming a secondary coil having a cooling duct in the center, forming an insulating paper on the outside of the secondary coil, and forming a primary coil winding the insulating paper. However, the primary coil is a transformer that is wound in multiple layers through a section guide, and an upper and lower support blocks on both sides of the transformer to be in contact with a transformer core outside the primary coil of the transformer and supported on both sides. Coupling parts formed in front and rear of the block, and both ends of the support blocks on both sides of the coil support part are accommodated, and coupling pieces are formed in the front and rear sides up and down so as to fix both sides of the transformer device. Both sides of the frame, the upper and upper and lower support blocks of the two side frames are accommodated in the front and rear and the engaging pieces of both side frames It is characterized by consisting of the upper and lower frames forming a pair of fixing pieces in the corresponding position.

Description

Dry Type Pole Mounted Transfromer For Outdoor

1 is a perspective view showing a core portion of an outdoor dry column transformer according to the present invention;

Figure 2 is a perspective view of the coil portion of the outdoor type dry pole transformer according to the present invention,

3 is a core, coil assembly assembly perspective view of an outdoor type dry column transformer according to the present invention;

Figure 4 is an assembled perspective view of an outdoor dry column transformer according to the present invention,

5 is an exploded perspective view of an outdoor type dry column transformer according to the present invention;

Figure 6 is an exploded view of the enclosure of the outdoor type dry column transformer according to the present invention,

7 is an assembly diagram of the outdoor type dry column transformer according to the present invention,

8 is a state diagram of use of the outdoor type dry column transformer according to the present invention.

<Description of Symbols for Main Parts of Drawings>

10: transformer 11: transformer core

12 bobbin 13 cooling duct

14: secondary coil 15: insulating paper

16: Primary Coil 17: Section Guide

20: coil support part 21: upper and lower support blocks

22: support block on both sides 30: frame on both sides

31: coupling piece 32: coupling hole

40: up and down frame 41: fixed piece

The present invention relates to an outdoor dry column transformer, and more particularly, to the safety and durability of electrical insulation by applying a vacuum pressure impregnation process to the primary and secondary coils constituting the outdoor dry column transformer. Secure the safety against electromechanical force in case of short circuit accident by the coil support part.The transformer enclosure is divided into the upper part, the middle part and the lower part.The upper part of the upper part is inclined and the rainwater is not accumulated. Mounting the bushing has a structure that can be mounted to the secondary bushing on the side, the stop portion relates to an outdoor dry pole transformer that can maximize the cooling efficiency.

In general, a transformer is a power transformer connected to a transmission and distribution line and a coupling transformer used in an electronic circuit. A transformer converts a voltage by winding a coil around a core, and winding one or two coils with a primary coil and a secondary coil. In the above circuit, the AC power is supplied to deform the voltage and current by the electromagnetic induction action to supply the AC power of the same frequency to the circuit.

Such transformers have various types such as instrument transformers, dry transformers, neon transformers, single winding transformers, columnar transformers, etc. In recent years, there is an urgent need for differentiated new concept transformers such as safety, reliability, and environmental friendliness.

Among these transformer-type columnar transformers, there was a risk of contamination due to contamination of polychlorinated biphenyls (PCBs) as insulation oil and explosion due to transformer overheating in the event of power failure.

Polychlorinated biphenyls (PCBs), which are insulating oils, are chlorine-based organic compounds, which have a fatal adverse effect on the health of workers due to their strong toxicity, persistence, and bioaccumulation. Of course there was a problem in reducing the power quality during power reception.

In addition, the molded transformer is made of epoxy resin, so it is difficult to reuse the conductor when discarded, and it is vulnerable to environmental pollution because the epoxy resin is not corroded, and the heat generated by the transformer escapes from the bottom to the top by using convection during cooling. There was a problem.

The present invention has been made in view of the above-mentioned problems of the prior art, and when the outdoor dry column transformer is impregnated with a vacuum pressure impregnation process in a dry coil, a short circuit accident is caused by the coil and the coil support part which are electrically, mechanically and thermally safe. Its purpose is to provide safety for the electromechanical force, and to provide outdoor dry pole transformers with the structure of the enclosure to maximize the cooling efficiency and easy maintenance.

In order to achieve the above object, the present invention forms a secondary coil formed with a cooling duct in the center and is wound around a bobbin formed inside to wind a pair of transformer cores in forming a transformer core. And forming a primary coil winding the insulation paper, wherein the primary coil is wound in a plurality of layers through a section guide, and contacts the transformer core outside the primary coil of the transformer to contact the primary coil. The upper and lower side support blocks are provided on the upper and lower sides, and both side support blocks are formed on both sides, and both ends of the support blocks on both sides of the coil support unit are accommodated, and the upper and lower sides are fixed to both sides of the transformer. Both sides of the frame forming a coupling piece and the upper and lower sides are formed with coupling holes, and the upper and upper and lower support blocks of the two side frames are accommodated And the upper and lower frames forming a pair of fixing pieces at positions corresponding to the engaging pieces of both side frames, and the dry transformer, the coil support part, both the frame parts, and the upper and lower frame parts are assembled in a state where the front and rear parts are fixed. A lower enclosure having a plurality of supporting steels formed thereon so as to form a settled surface formed with a coupling hole on the upper side of the supporting shape, and a plurality of supporting supports coupled to the coupling hole of the lower enclosure, and having a perforated opening formed outside the support; Combining the sikiltong cylinder and the inside of the slide-type cylinder and the outer filter combined with the air filter, and forming a coupling bracket to be coupled to the upper side of the support of the outer box, characterized in that consisting of the upper enclosure formed the inclined surface on the upper side It provides an outdoor dry columnar transformer.

Hereinafter, with reference to the accompanying drawings, preferred embodiments of the present invention as described above in detail as follows.

1 is a perspective view showing a core part of an outdoor dry pillar transformer according to the present invention, FIG. 2 is a perspective view of a coil part of an outdoor dry pillar transformer according to the present invention, and FIG. 3 is an outdoor dry pillar column according to the present invention. Core, coil assembly of the transformer, Figure 4 is an assembly perspective view of an outdoor dry columnar transformer according to the present invention, Figure 5 is an exploded perspective view of an outdoor dry column transformer according to the present invention, Figure 6 is an outdoor type according to the present invention Fig. 7 is an exploded view of the dry columnar transformer according to the present invention, and Fig. 8 is a state diagram of the outdoor dry column transformer according to the present invention.

1 to 2, the outdoor columnar transformer of the present invention forms a transformer device 10 composed of a transformer core 10 and primary and secondary coils 16 and 14.

The transformer 10 forms a pair of transformer cores 11 which become passages of magnetic flux to form magnetic paths.

The secondary coil 14 having the cooling duct 13 formed at the center of outputting the induced voltage according to the number of turns ratio RATIO is formed in the bobbin 12 formed inside the coil core 10 so as to be wound. Insulating paper 15 using a type H insulating material is formed on the outside of the secondary coil 14.

The primary coil 16 wound around the insulating paper 15 is formed on the outside of the insulating paper 15, but the primary coil 16 is formed to be wound in several layers through the section guide 17.

The coil support part 20 is formed to contact the transformer core 11 outside the primary coil 16 of the transformer device 10 to support the primary coil 16, but the coil support part 20 The upper and lower support blocks 21 and upper and lower support blocks 21 are formed on both sides of the transformer core 11 at both sides.

Both side frames 30 are formed to accommodate both ends of both side support blocks 22 of the coil support unit 20 as described above.

The both sides of the frame to form a coupling piece 31 in the upper and lower front and rear to fix both sides of the transformer 10, and the coupling hole 32 is formed on both sides of the upper and lower sides.

In addition, the upper and lower frame 40 is formed so that the upper and upper and lower support blocks 21 of the both side frame 30 is accommodated and fixed, but the upper and lower frame 40 is coupled pieces of both side frames 30 in the front and rear ( A pair of fixing pieces 41 is formed in the position corresponding to 31).

Wherein the dry transformer 10, the coil support portion 20, both side frame portion 30, the upper and lower frame portion 40 to form a lower enclosure 50 to be placed in an assembled state, but the lower The enclosure 50 forms a plurality of supporting steels 51 and forms a settled surface 53 on which the coupling holes 52 are formed.

In the coupling hole 52 of the lower enclosure 50 formed as described above, a plurality of supports 61 are coupled to form a middle enclosure 60, and a slide formed with a through hole opening 62 is formed outside the support 61. Coupling the cyclic cylinder 63 and the air filter 64 is coupled to the inside of the slide-type cylinder (63).

In addition, the upper enclosure 70 is formed on the upper side of the support 61 of the middle enclosure 60, but the upper enclosure 70 forms a coupling bracket 71 to the outside and the inclined surface so that rain water can flow down to the upper side. Form 72.

Referring to the operation and effects of the present invention configured as described above are as follows.

First, a bobbin 12 is installed to wind a coil on a pair of transformer cores 11, and a cooling duct 13, a secondary coil 14, an insulating paper 15, and a primary coil are installed on the bobbin 12. (16) are formed sequentially.

At this time, the section guide 17 is sequentially formed of a layer layer is wound into a plurality of single layers.

In order to ensure the reliability of the dielectric strength of the coil as described above, by applying the V.P.I system, the coil may be vacuum-pressure-impregnated to remove bubbles to secure electrical safety of partial discharge generated during transformer operation.

The upper and lower support blocks 21 of the coil support part 20 are brought into surface contact with the transformer core 11 up and down and front and back of the transformer device 10, and both sides support blocks 22 are fixed while being in surface contact with each other. Assemble to cope with horizontal mechanical force.

In such a state, the both sides of the support frame 22 of the transformer 10 is inserted into the inner side of the frame 60, and then inserted into the upper and lower frames 40 to accommodate the upper and lower ends of the both sides of the frame (20) 31) and the fixing piece 41, the coupling hole 32 and the fixing hole 44 is fixed using a bolt (B).

In order to fix the transformer of this transformer, the middle and middle fixed seat is formed on the upper frame and fixed and placed in the transformer enclosure.

The dry transformer 10, the coil support portion 20, both side frame portion 30, the upper and lower frame portion 40 is assembled in a state in which the lower enclosure (50) and then the support to form a middle enclosure (60) 61) to fix the slide type cylinder (63) and the air filter (64).

In this state, the coupling bracket 71 of the upper enclosure 70 is coupled to the upper side of the support 61 of the middle enclosure 60 in a state of surface contact.

As the cooling structure of the general dry transformer enclosure, which is a characteristic of the transformer enclosure, is vertical, it adopts a horizontal cooling structure, and thus it is easy to dissipate the heat of the transformer coil to the outside air, and the cooling effect of the outside air (wind) is also excellent. In addition, when the slide type cylinder and air filter are removed during maintenance, the inside of the transformer core can be directly seen, which shortens the maintenance work time and improves the workability.

As described above, the present invention solves the problems of environmental pollution, heavy poisoning of PCBs of workers, fire and explosion caused by overheating, because the outdoor dry columnar transformer does not use electric insulating oil. Since dry dry insulation material is used, it has high heat resistance and flame retardancy, and the coil and coil support part which improved electrical, mechanical and thermal durability by vacuum pressure impregnation process for the first and second coils is safe for the electromechanical force in case of short circuit accident. When the transformer is in contact with the outside air, it has the horizontal cooling structure rather than the vertical cooling in the prior art, so the cooling effect is maximized. And air filter can be assembled and removed to see inside and transformer Since the interior is visible, there is an advantage in the maintenance easier than the conventional transformer.

Although the present invention has been illustrated and described with reference to certain preferred embodiments, the present invention is not limited to the above-described embodiments and has a general knowledge in the technical field to which the present invention belongs without departing from the spirit of the present invention. Various changes and modifications may be made by the user.

Claims (1)

It is wound on the bobbin 12 formed inside so as to be wound around the pair of transformer cores 11 and the secondary coil 14 having the cooling duct 13 is formed at the center thereof, and the insulating paper 15 is formed on the outside of the secondary coil 14. And a primary coil 16 for winding the insulating paper 15, wherein the primary coil 16 is wound in a plurality of layers through a section guide 17, and Upper and lower support blocks 21 and upper and lower support blocks 22 and upper and lower support blocks 22 on both sides of the transformer 10 to contact the transformer core 11 outside the primary coil 16 to support the primary coil 16. The coil support part 20 formed in front and rear, Both side ends of both support blocks 22 of the coil support part 20 are accommodated, and the coupling pieces 31 are formed in the upper and lower side front and rear so as to fix both sides of the transformer device 10. 32 and both sides of the frame 30 is formed, A pair of fixing pieces 41 are formed at positions corresponding to the coupling pieces 31 of both side frames 30 in front and rear directions so that the upper and upper and lower support blocks 21 of both side frames 30 are accommodated and fixed. Upper and lower frame 40 formed with the fixing hole 42 on both sides, The dry transformer 10, the coil support portion 20, both side frame portion 30, the upper and lower frame portion 40 forms a plurality of supporting steel 51 to be placed in an assembled state and the support shape A lower enclosure 50 having a settling surface 53 having a coupling hole 52 formed thereon, Coupling a plurality of supports 61 to the coupling hole 52 of the lower enclosure 50, and combines the slide-type cylinder (63) formed with a through hole vent 62 to the outside of the support 61 and slide type Inside the ventilator 63, the outer box 60, which combines the air filter 64, Outdoor type dry columnar transformer, characterized in that the upper bracket 70 is formed to form a coupling bracket 71 coupled to the upper side of the support 61 of the outer box 60, the inclined surface 72 on the upper side .

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