KR102260063B1 - Corrugated radiator with fin length extension type for transformer - Google Patents

Abstract

The present technology relates to a corrugated fin length extension-type radiator for a transformer. The corrugated fin length extension-type radiator for the transformer of the present technology comprises: a first flow path pipe receiving insulating oil from a transformer main body; a second flow path pipe flowing the insulating oil after heat exchange with the outside to the transformer main body; two or more corrugated fin blocks accommodating the insulating oil by having an internal space communicating with the first and second flow path pipes; and one or more connection blocks forming a space for accommodating the insulating oil between the corrugated fin blocks. According to the present technology, the present invention is capable of overcoming a limitation of an installation space of the radiator and manufacturing a plurality of radiation fins more efficiently.

Description

Corrugated radiator with fin length extension type for transformer

The present invention relates to a corrugated fin extended-type radiator for transformers, and more particularly, to a radiator to which a corrugated-type heat dissipating fin capable of extending the fin length is applied.

Transformers generate a lot of heat during operation. Therefore, a structure that efficiently dissipates heat is very important in the design of a transformer.

A radiator may be applied to the transformer for heat dissipation. A plurality of heat dissipation fins are closely arranged in the radiator to widen the heat exchange area.

Since increasing the heat dissipation efficiency is the key, there are various approaches, such as research on structural changes such as installing dents on heat dissipation fins, and research on renewing the arrangement direction of heat dissipation fins.

Republic of Korea Utility Model Publication No. 20-0348854 (design name: radiator for transformer) is a pair of header pipes installed parallel to each other on one side of the transformer body, and a plurality of heat sinks installed in communication between the header pipes In the heat sink, the heat sink has two plate edges joined to form a space therein, and a plurality of grooves configured to contact the two plates from the inside in the longitudinal direction of the heat sink are formed to form an insulating flow path, It shows a radiator for a transformer that is configured so that the concave-convex part is formed long between them so that the cooling effect can be excellently improved.

However, in the conventional radiator for a transformer as described above, the structure has a complicated problem. Manufacturing a plurality of heat sinks takes a lot of man-hours in manufacturing the heat sink. This increases the cost.

Combining a large number of heat sinks to the header pipe one by one also consumes a lot of resources. In addition, since the size of the radiator is usually dependent on the size of the transformer, the number of heat sink fins is limited by the installation area, and combining a large number of heat sinks only in a predetermined position greatly reduces space utilization.

The inventor of the present invention has completed the present invention after long research and trial and error in order to overcome the space limitation and find a more efficient manufacturing method.

An embodiment of the present invention provides a corrugated fin length extension type radiator for a transformer that overcomes the limitation of the radiator installation space and can more efficiently manufacture a plurality of heat dissipation fins.

On the other hand, other objects not specified in the present invention will be additionally considered within the range that can be easily inferred from the following detailed description and effects thereof.

A corrugated fin length-extended radiator for a transformer according to an embodiment of the present invention includes: a first flow pipe for receiving insulating oil from a transformer body; a second flow pipe for flowing the insulating oil after heat exchange with the outside to the transformer body; two or more corrugated fin blocks communicating the inner space with the first and second flow pipes to accommodate the insulating oil; and one or more connection blocks forming a space for accommodating the insulating oil between the corrugated fin blocks.

The corrugated fin blocks may be formed so that connection portions connecting the heat dissipation fins face each other to form a closed structure for circulating the insulating oil.

The connection part may form an insulating oil moving channel between the first and second flow channels.

Each of the corrugated fin blocks includes a first corrugated fin portion disposed on one side with respect to the channel and a second corrugated fin portion disposed on the other side, and the connection portion includes heat dissipation fins of the first corrugated fin portion. and a first connection part integrally connecting the heat dissipation fins of the second corrugated fin part, and a second connection part integrally connecting the heat dissipation fins of the second corrugated fin part, and the first connection part and the second connection part may be disposed to face each other.

The connection part may further include a bent part connecting the first connection part and the second connection part integrally.

the first flow pipe includes both first extensions defining a first opening along the channel, the second flow pipe includes both second extensions defining a second opening along the channel; The connection block may include both plate portions forming a third opening and a fourth opening facing the third opening along the channel.

In a state in which the corrugated fin blocks are coupled to the first and second flow pipes, the connection part is disposed outside the both first extension parts and the both second extension parts, and the connection block is the corrugated fin In a state coupled to the blocks, the connection part may be disposed on the outside of the both plates.

The heat dissipation fin and the connection part may be integrally formed from one plate material and continuously formed.

The heat dissipation fins of the first corrugated fin part and the heat dissipation fins of the second corrugated fin part may be arranged side by side.

The heat dissipation fins of the first corrugated fin unit and the heat dissipation fins of the second corrugated fin unit may be spaced apart from each other by a width of the channel.

a first gap maintaining part coupled to the outside of the first corrugated fin part to maintain a predetermined distance between the heat dissipation fins; and a second gap maintaining part coupled to the outside of the second corrugated fin part to maintain a predetermined distance between the heat dissipation fins.

A reinforcing plate disposed side by side with the connection block; further comprising, wherein the reinforcing plate comprises: the first spacing part of any one of the two or more corrugated fin blocks; It may be coupled to one of the first gap maintaining portion to support its own weight.

The connecting block may have a plurality of reinforcing ribs therein.

The present technology can provide a corrugated fin length extension type radiator for a transformer, which overcomes the limitation of the radiator installation space and can more efficiently manufacture a plurality of heat sink fins.

1 is a view showing the overall configuration of a corrugated fin length extension type radiator for a transformer according to an embodiment of the present invention.
2 is a view showing an exploded view of a corrugated fin length extension type radiator for a transformer according to an embodiment of the present invention.
3 is a view showing in more detail any one of the corrugated fin blocks of the corrugated fin length extension type radiator for a transformer according to an embodiment of the present invention.
4 is a diagram illustrating an example of forming a first corrugated fin block according to an embodiment of the present invention.
FIG. 5 is a diagram schematically illustrating a process of manufacturing the first corrugated fin block of FIG. 4 .
6 is a view showing a detailed configuration of a first flow pipe according to an embodiment of the present invention, FIG. 6A is a perspective view, and FIG. 6B is a perspective view seen from the bottom.
7 is a diagram illustrating a coupling relationship between a first flow pipe and a first corrugated fin block according to an embodiment of the present invention.
8 is a diagram illustrating a coupling relationship between a connection block and a corrugated fin block according to an embodiment of the present invention.
It is revealed that the accompanying drawings are exemplified by reference for understanding the technical idea of the present invention, and the scope of the present invention is not limited thereby.

In the following, the most preferred embodiment of the present invention is described. In the drawings, the thickness and the interval are expressed for convenience of description, and may be exaggerated compared to the actual physical thickness. In describing the present invention, well-known components that are not related to the gist of the present invention may be omitted. In adding reference numbers to the components of each drawing, it should be noted that only the same components are given the same number as possible even though they are indicated on different drawings.

1 is a view showing the overall configuration of a corrugated fin length extension type radiator for a transformer according to an embodiment of the present invention.

2 is a view showing an exploded view of a corrugated fin length extension type radiator for a transformer according to an embodiment of the present invention.

And, Figure 3 is a view showing in more detail any one of the corrugated fin blocks of the corrugated fin length extension type radiator for a transformer according to an embodiment of the present invention.

1 to 3, the corrugated fin length extension type radiator 100 for a transformer (hereinafter also simply referred to as a 'radiator') includes a first flow path pipe 110 , a second flow path pipe 120 , and a first It may include a corrugated fin block 130 , a second corrugated fin block 140 , a connection block 150 , and a gap maintaining unit 160 .

The first flow pipe 110 receives insulating oil from the transformer body 10 .

The transformer body 10 may be a power transformer, a distribution transformer, a pole transformer, a ground transformer, or a single winding transformer. The present invention is not limited to the listed examples, and may be applied to any type of transformer to which a cooling method using a fluid is applied. The fluid may also be a heat transfer medium, and is not limited to transformer oil, insulating oil, cooling water, air, and the like. However, in the present invention, for convenience of description, an embodiment of insulating oil will be mainly described.

The second flow pipe 120 flows the insulating oil after heat exchange with the outside to the transformer body.

The first flow path pipe and the second flow path pipe may be in the form of pipes through which insulating oil can flow therein. It extends in the first direction (I) in the drawing. As will be described later, the lower portion of the first flow passage pipe and the upper portion of the second flow passage tube each have an opening (O, FIG. 6 ). The opening also extends in the first direction and forms a flow passage for the insulating oil.

The first and second corrugated fin blocks 130 and 140 are disposed between the first flow path pipe 110 and the second flow path pipe 120 .

A connection block 150 is disposed between the first and second corrugated fin blocks. As will be described later, the first corrugated fin block and the second corrugated fin block may be separately manufactured and then connected through a connection block. This makes it possible to extend the pin length in block units.

In the present invention, an embodiment in which two corrugated fin blocks are provided is mainly described, but the present invention is not limited thereto, and an embodiment in which three or more corrugated fin blocks are disposed is also possible. When three or more corrugated pin blocks are disposed, two or more connection blocks disposed between them may be sufficient. As a result, the extension of the pin length is further increased.

The drawing shows an embodiment in which the first corrugated fin block is disposed on the upper portion and the second corrugated fin block is disposed on the lower portion. However, the first corrugated fin block and the second corrugated fin block differ only in the arrangement position and have the same structure. Hereinafter, the structure of one of the first corrugated fin blocks will be mainly described. do it with

The corrugated fin blocks 130 and 140 communicate with the first flow pipe 110 and the second flow pipe 120 to receive an insulating oil (not shown).

The corrugated fin blocks each form an insulating oil transfer channel (CH) in the middle. Accordingly, a circulation path of the insulating oil passing through the first flow pipe, the corrugated fin blocks, and the second flow pipe is formed. That is, the insulating oil obtained from the heat from the transformer body 10 side comes out of the first flow pipe 110 , passes through the corrugated fin blocks 130 and 140 , and dissipates the heat, and passes through the second flow pipe 120 . By entering through the transformer body again, it circulates inside the radiator.

The insulating oil is a heat transfer medium, and is not limited to its form, such as oil. It is sufficient to act as a heat pump to dissipate heat from the transformer body to the outside.

The first corrugated fin block 130 includes heat dissipation fins 132 .

The heat dissipation fins 132 each extend in the second direction II in the drawing. It has a height in the third direction (III).

A sub-channel (SC, see an enlarged view of part A of FIG. 2 ) is formed inside each heat dissipation fin. The sub-channels are formed as many as the number of heat dissipation fins. Several sub-channels SC may have a shape extending like a branch from the insulating oil transfer channel CH. The insulating oil is accommodated inside each heat dissipation fin, thereby maximizing the area of thermal contact with the outside air.

According to an embodiment of the present invention, as the insulating oil transfer channel CH is provided in the center of the first corrugated fin block 130 , the heat dissipation fins 132 are considered to be disposed along the outer edge of the insulating oil transfer channel CH. can Alternatively, the heat dissipation fins 132 may be disposed to be spaced apart from each other by a predetermined interval with an insulating oil moving channel CH in the center. In this case, the predetermined interval may be a width in the second direction (II) of the insulating oil transfer channel (CH).

Although the heat dissipation fins are shown as 10 on one side and 10 on the right in the drawing, a total of 20, but the present invention is not limited to the number. Various numbers may be formed according to the width of the heat dissipation fins, the spacing between the heat dissipation fins, and the thickness of the material forming the heat dissipation fins.

The first corrugated fin block 130 according to an embodiment of the present invention includes a connection portion 134 connecting the heat dissipation fins 132 .

Referring to FIG. 3 , the first corrugated fin block 130 includes a first corrugated fin part 130A disposed on one side with respect to the insulating oil transfer channel CH and a second corrugated fin part 130B disposed on the other side. When including , the heat dissipation fins (first heat dissipation fins) of the first corrugated fin unit 130A may be referred to by reference numeral 132A, respectively, and the connection part (first connection unit) may be referred to by reference numeral 134A. The heat dissipation fins (second heat dissipation fins) of the second corrugated fin part 130B may be referred to by reference numeral 132B, respectively, and the connection part (second connector) may be referred to by reference numeral 134B.

The first connection part 134A may connect the first heat dissipation fins 132A integrally. The second connection part 134B may integrally connect the second heat dissipation fins 132B.

The heat dissipation fins 132A of the first corrugated fin unit and the heat dissipation fins 132B of the second corrugated fin unit may be arranged side by side.

In this case, the first connection part 134A is disposed to face the second connection part 134B.

It can be seen that the first connection part and the second connection part are disposed to be spaced apart from each other by a predetermined distance with an insulating oil moving channel (CH) in the middle. In this case, the predetermined interval may be the width of the insulating oil moving channel in the second direction (II).

As shown in the drawing, the first connection portion forms one wall portion forming a closed structure for circulation of insulating oil. The second connecting portion forms an opposite wall portion forming a closed structure for circulation of the insulating oil. That is, the first connecting portion and the second connecting portion are formed to face each other to form a closed structure for circulation of the insulating oil.

That is, the connection parts 134A and 134B form an insulating oil transfer channel CH between the first flow path pipe 110 and the second flow path pipe 120 .

Also, as shown in the drawing, the first connection part 134A and the second connection part 134B may be connected to each other through the bent part BP. The bent portion may continuously connect the first connection portion and the second connection portion without interruption. The bent part may integrally connect the first connection part and the second connection part.

This bent portion BP forms another wall portion forming a closed structure for circulation of insulating oil.

On the opposite side of the bent part, the first connection part 134A and the second connection part 134B may be connected to each other through the junction part JP. The joint portion may be one in which the intermittent first connecting portion and the second connecting portion are joined to each other by a physical method such as welding or a chemical method. The present invention is not limited thereto, and a method in which the first connection part and the second connection part are connected to each other by adding a separate bonding structure is also possible.

This joint portion JP forms the other opposite wall portion forming a closed structure for circulation of the insulating oil.

Accordingly, the insulating oil transfer channel CH may be a rectangular parallelepiped space long in the third direction (III) formed by the first connecting portion and the second connecting portion facing each other, and the opposite bending portion and the connecting portion.

4 is a diagram illustrating an example of forming a first corrugated fin block according to an embodiment of the present invention.

And, FIG. 5 is a diagram schematically illustrating a process of manufacturing the first corrugated fin block of FIG. 4 .

First, referring to FIG. 4 , the first corrugated fin block according to the embodiment of the present invention may be formed by bending the middle of the corrugated fin portion CFS integrally formed from one plate material PL once. .

A portion bent in the middle becomes the above-described bent portion BP.

A total of 10 fins from the rightmost fin F1 to the left in the drawing become the above-described first corrugated fin portion 130A.

A total of 10 fins from the next fin to the leftmost fin F20 in the drawing become the above-described second corrugated fin portion 130B.

In the drawing, the right end and the left end of the plate material meet and join to form the above-described joint JP.

Referring to FIG. 5 , a process in which the above-described corrugated fin part CFS is obtained from one plate material PL is illustrated.

As shown in FIG. 5 , the corrugated fin part CFS may be manufactured through a press process using a mold. The left mold (LM), which is the moving end, enters the right mold (RM), which is the fixed end, in the d1 direction. Before that, the core mold (CM) is in a state in which the plate material is pushed up and deformed. As the left mold LM firmly presses the plate toward the right mold RM, the plate is manufactured into the pin F1 having the above-described shape. The deformed plate material moves to the right little by little, and then, new pins F2 to F20 may be sequentially manufactured.

When the cross section taken along the line AA in FIG. 1 described above, it can be seen that the shape of the fin F1 of FIG. 5 is obtained.

Meanwhile, the first corrugated fin block 130 is not limited to the manufacturing example described above with reference to FIGS. 4 and 5 , and may be formed in various ways.

As an example, the first corrugated fin part and the second corrugated fin part are separately formed and then joined to each other, instead of in a folding manner, and thus may have a shape as shown in FIG. 3 . Another joint, such as the aforementioned joint, may be disposed instead of the bent portion on the left in the drawing. That is, the first corrugated fin part having 10 fins and the second corrugated fin part having 10 fins are separately formed and then joined to each other through junctions on both sides to have a shape as shown in FIG. 3 .

According to the first corrugated fin block manufacturing method described above in FIGS. 4 and 5 , structural stability, manufacturing convenience, and cost reduction can be achieved by integrally forming the heat dissipation fins. It is possible to easily change the thickness of the heat dissipation fins, the spacing between the heat dissipation fins, etc. from the thickness of the plate material, the thickness of the mold, the size, etc., so that the required number of heat dissipation fins can be more easily manufactured in a limited space.

Referring back to FIG. 2 , the heat dissipation fin 132 has a dent portion DT having a concave shape in the middle. The dent portion may be an oil-free region. Or, it is also a part that acts as an oil conservator that can accommodate a little oil when it is deformed according to an increase in internal pressure. In the drawings, a total of four dents in one heat dissipation fin extend along the third direction, but the present invention is not limited to the number or shape. On the other hand, a portion for accommodating oil is shown as an accommodating portion AP in the drawing. The receptacle determines the thickness of the heat dissipation fin.

The heat dissipation fin 132 may form an internal space (ie, the above-described sub-channel SC) capable of accommodating insulating oil by joining the uppermost end and the lowermost end of the heat dissipation fin 132 in a manner such as welding. In the drawings, the uppermost welded portion is referred to as WP.

On the other hand, since the end farther from the center channel CH is naturally formed according to the pressing process described above with reference to FIGS. 4 and 5 , a separate bonding is unnecessary.

The above description of the first corrugated fin block may be equally applied to the second corrugated fin block. Only the arrangement between the first flow path pipe and the second flow path pipe is changed up and down, and the same explanation is possible. A more detailed description thereof will be omitted.

The connection block 150 forms a space for accommodating the insulating oil between the corrugated fin blocks 130 and 140 . In the present invention, since there are two corrugated pin blocks, the embodiment is mainly described with one connection block, but the present invention is not limited to the number.

The connection block has a structure in which upper and lower portions are opened. It has an opening at the upper portion to allow the first corrugated fin block and the internal space to communicate. It has an opening at the bottom to allow the second corrugated fin block and the internal space to communicate. Accordingly, a circulation path of the insulating oil passing through the first flow pipe, the first corrugated fin block, the connection block, the second corrugated fin block, and the second flow pipe is formed.

To this end, the connection block may have both plate parts 152 and 153 forming an upper opening and a lower opening along the insulating oil moving channel.

In addition, the connection block 160 may have a plurality of reinforcing ribs 154 therein. It serves as a structural reinforcement for the block-unit fin length extension structure. It is taken into account that the connecting block will support all the weight of the components placed thereon.

The gap maintaining part 160 is formed in a rod shape, and is coupled to the heat radiation fins so that the heat radiation fins maintain a predetermined distance.

As shown in the figure, a total of eight spacing maintaining units may be disposed at each corner formed by the corrugated fin blocks, respectively. One space keeping part may be disposed to be joined to all of the uppermost welding parts (WP, see FIG. 2 ) of each of the heat dissipation fins. If the insulating oil is exposed to repeated expansion and contraction (especially in the case of a transformer applied to a photovoltaic generator, the amount of power generation varies with time), the original shape of the heat dissipation fin cannot be maintained, and heat dissipation occurs. The spacing between the fins may be distorted. As described above, this bonding position allows for the introduction of a more stable spacing structure by arranging the spacing part where the risk of leakage of insulating oil is minimal for the heat dissipation fins manufactured through the press process using the mold as described above. make it possible

The reinforcing plate 170 is disposed side by side with the connecting block 160 to serve as a structural reinforcement for the block-unit fin length extension structure. That is, it can be seen that it serves to assist the structural reinforcement of the connection block.

In the first corrugated fin block, those coupled to the outside of the first corrugated fin part are referred to as first gap maintaining parts 160A, and those coupled to the outside of the second corrugated fin parts are referred to as second gap maintaining parts 160B. can do. In the second corrugated fin block, those coupled to the outer side of the first corrugated fin portion are referred to as first gap maintaining portions 160A, and those coupled to the outer side of the second corrugated fin portions are referred to as second gap maintaining portions 160B. can do. In this case, the reinforcing plate may be coupled to the lower first gap maintaining part 160A of the first corrugated fin block and the upper first gap maintaining part 160A of the second corrugated fin block. In the self-weight support structure by the above-described connection block, the load is distributed not only on the connection block but also on the reinforcing plate and the spacing part. In the block-unit fin length extension structure, more robust structural rigidity can be secured.

If there are three corrugated pin blocks and there are two intervening connecting blocks, a total of four reinforcing plates may also be arranged for each connecting block.

6 is a view showing a detailed configuration of a first flow path pipe according to an embodiment of the present invention. Figure 6a is a perspective view, Figure 6b is a perspective view seen from the bottom, respectively.

As shown in Figure 6, the first flow pipe 110 is a body portion 112 that forms a space in which insulating oil can flow therein, a closing portion 114 coupled to one side of the body portion to form a closed structure, It may include a flange portion 116 for coupling toward the transformer body and a ring portion 117 serving as a ring in the manufacturing or movement process. The finishing part referred to by reference numeral 114 is shown in an exploded state for convenience of description.

The first flow pipe has an opening O for communicating with the inner space of the first corrugated fin block. The opening extends along the first direction together with the insulating oil transfer channel CH described above.

The opening O may be formed by both first extension portions 118 and 119 extending downward from the body portion 112 .

The opening is limited in length by a lower closure 113 .

A lower closure 113 is provided between both first extensions 118 and 119 to close a portion of the opening. Accordingly, the sealed structure is maintained even if the corrugated fin blocks are installed to be spaced apart from the transformer body by a predetermined distance. The lower end portion may be in the shape of a plate capable of blocking the opening.

Only the arrangement position with respect to the above-described first flow pipe 110 is changed, and the same description is applicable to the second flow pipe 120 as well. That is, the second flow pipe may also include both second extensions forming an opening along the insulating oil moving channel. In addition, it may have a body portion, a finish portion, a flange portion, a ring portion. It may have a top finish instead of a bottom finish. A more detailed description will be omitted.

7 is a diagram illustrating a coupling relationship between a first flow pipe and a first corrugated fin block according to an embodiment of the present invention.

Referring to FIG. 7 , the first flow pipe 110 may be coupled in such a way that it is inserted into the first corrugated fin block 130 .

In detail, both first extensions of the first flow pipe may be coupled in such a way that a part thereof is inserted into the insulating oil movement channel provided in the middle of the first corrugated fin block.

After insertion, it may be firmly fixed by a physical bonding method such as welding or a chemical bonding method. As an example, welding may be applied to the outer surface of the connecting portion disposed outside with respect to both first extensions 118 and 119 in a state of being inserted into the insulating oil moving channel.

The area overlapped by the insertion is referenced in the figure by reference numeral 118OL. Although not shown, there may be equally overlapping regions on the opposite side. Reference is made to reference numeral 118OL to represent the element 118 disposed inward with respect to the connecting portion.

Referring to the enlarged view taken along section AA in FIG. 7 , the arrangement relationship between both first extension parts 118 and 119 in the insulating oil movement channel and the connection part 134 of the first corrugated pin block can be confirmed. Both first extensions may be inscribed with respect to the connection part. It is preferable that the connection part and both first extension parts are in close contact with each other so as to form a circulation path of the insulating oil.

Such a structure is advantageous for welding the first corrugated fin block manufactured through the press process to the first flow pipe. That is, in consideration of the characteristics of the first corrugated fin block integrally formed from one plate, by arranging both first extension parts of the first flow pipe, which is a joint part, inside the connection part, the welding operation can be made more easily. do.

The coupling relationship between the first flow pipe and the first corrugated fin block described in FIG. 7 may be equally applied to the coupling relationship between the second flow pipe and the second corrugated fin block. That is, both second extensions of the second flow pipe may be coupled in such a way that a part thereof is inserted into the insulating oil movement channel provided in the middle of the second corrugated fin block. That is, in a state in which the first and second corrugated fin blocks are coupled to the first and second flow pipes, the connection portion of the first corrugated fin block is disposed on the outside of both first extension portions, and the second corrugated portion The connecting portion of the pin block may be viewed as being disposed on the outside of both second extensions.

This arrangement relationship also appears in the coupling relationship between the connection block and the corrugated pin blocks.

8 is a diagram illustrating a coupling relationship between a connection block and a corrugated fin block according to an embodiment of the present invention.

Referring to FIG. 8 , the connection block 150 may be coupled in such a way that it is inserted into the first corrugated fin block 130 and the second corrugated fin block 140 .

In detail, the upper part of both plate parts 152 and 153 of the connection block is inserted into the insulating oil transfer channel provided in the middle of the first corrugated fin block 130, and the lower part thereof is the second corrugated fin block. It can be coupled in such a way that it is inserted into the insulating oil moving channel provided in the center of the 140 .

After insertion, it may be firmly fixed by a physical bonding method such as welding or a chemical bonding method. As an example, welding may be applied to the outer surfaces of the connecting portions disposed outside with respect to both plate portions 152 and 153 in a state of being inserted into the insulating oil moving channel.

The region overlapped by the insertion is referenced in the drawing by reference numeral 152OL. Although not shown, there may be equally overlapping regions on the opposite side. Reference numeral 152OL denotes an element 152 disposed inside the connection part.

Referring to the enlarged view taken along section AA in FIG. 8 , the arrangement relationship between both plate parts 152 and 153 in the insulating oil moving channel and the connection part 134 of the first corrugated pin block can be confirmed. Both plate parts may be inscribed with respect to the connection part. It is preferable that the connection part and both plate parts are in close contact with each other so as to form a circulation path of the insulating oil.

Such a structure is advantageous for welding bonding with the connecting block for the corrugated pin blocks manufactured through the press process. That is, in consideration of the characteristics of the first corrugated fin block and the second corrugated fin block integrally formed from one plate, by arranging inside the connecting portion of both plate portions of the connecting block, which is the joint portion, the welding operation can be made more easily. make it possible

Although only the coupling relationship between the second corrugated block and the connection block is shown in the enlarged view taken along line AA of FIG. 8 , the same may be applied to the coupling relationship between the first corrugated block and the connection block. That is, in a state in which the connecting block is coupled to the first and second corrugated fin blocks, the connecting portion of the first corrugated fin block and the connecting portion of the second corrugated fin block can be viewed as being disposed on the outside of both plates. .

As described above, the present invention has been described with specific matters such as specific components and limited embodiments and drawings, but these are provided to help a more general understanding of the present invention, and the present invention is not limited to the above embodiments. , various modifications and variations are possible from these descriptions by those of ordinary skill in the art to which the present invention pertains. Therefore, the spirit of the present invention should not be limited to the described embodiments, and not only the claims to be described later, but also all those with equivalent or equivalent modifications to the claims will be said to belong to the scope of the spirit of the present invention. .

10: transformer body
100: corrugated fin length extension type radiator for transformer
110: first flow pipe
112: body part
113: lower finish
114: finish
116: flange part
117: ring part
118, 119: both first extensions
120: second flow pipe
130: first corrugated fin block
130A: first corrugated fin part
130B: second corrugated fin part
132: heat dissipation fin
134: connection
132A: first heat dissipation fin
132B: second heat dissipation fin
134A: first connection part
134B: second connection part
140: second corrugated pin block
150: connection block
152, 153: both plate parts
154: reinforcing rib
160: gap maintaining part
170: reinforcement plate

Claims (13)

a first flow pipe for receiving insulating oil from the transformer body;
a second flow pipe for flowing the insulating oil after heat exchange with the outside to the transformer body;
two or more corrugated fin blocks communicating the inner space with the first and second flow pipes to accommodate the insulating oil; and
One or more connection blocks forming a space for accommodating the insulating oil between the corrugated fin blocks. According to claim 1,
The corrugated fin blocks are respectively formed to face the connection portions connecting the heat dissipation fins to form a closed structure for circulating the insulating oil. 3. The method of claim 2,
The corrugated fin length extension type radiator for a transformer, characterized in that the connecting portion forms an insulating oil moving channel between the first and second flow pipes. 4. The method of claim 3,
Each of the corrugated fin blocks,
A first corrugated fin portion disposed on one side with respect to the channel and a second corrugated fin portion disposed on the other side,
The connection portion includes a first connection portion integrally connecting the heat dissipation fins of the first corrugated fin portion and a second connection portion integrally connecting the heat radiation fins of the second corrugated fin portion,
The corrugated fin length extension type radiator for a transformer, characterized in that the first connection part and the second connection part are disposed to face each other. 5. The method of claim 4,
The connection part, a corrugated fin length extension type radiator for a transformer, further comprising a bent part connecting the first connection part and the second connection part integrally. 5. The method of claim 4,
the first flow pipe includes both first extensions defining a first opening along the channel;
the second flow pipe includes both second extensions defining a second opening along the channel;
and the connecting block includes both plate portions forming a third opening along the channel and a fourth opening facing the same. 7. The method of claim 6,
In a state in which the corrugated fin blocks are coupled to the first and second flow pipes, the connection part is disposed outside the both first extension parts and the both second extension parts,
In a state in which the connecting block is coupled to the corrugated fin blocks, the connecting portion is disposed on the outside of the both plates. 3. The method of claim 2,
The corrugated fin length extension type radiator for a transformer, characterized in that the heat dissipation fin and the connection portion are integrally formed from one plate and are continuously formed. 5. The method of claim 4,
The heat dissipation fins of the first corrugated fin part and the heat dissipation fins of the second corrugated fin part are arranged side by side. 5. The method of claim 4,
The heat dissipation fins of the first corrugated fin part and the heat dissipation fins of the second corrugated fin part are spaced apart from each other by the width of the channel. 5. The method of claim 4,
a first gap maintaining part coupled to the outside of the first corrugated fin part to maintain a predetermined distance between the heat dissipation fins; and
The corrugated fin length extension type radiator for a transformer further comprising a; a second gap maintaining part coupled to the outside of the second corrugated fin part to maintain a predetermined distance between the heat dissipation fins. 12. The method of claim 11,
A reinforcing plate disposed side by side with the connection block; further comprising,
The reinforcing plate is coupled to the first gap maintaining part of any one of the two or more corrugated fin blocks and the first gap maintaining part of the other one of the two or more corrugated fin blocks to support its own weight. A corrugated fin length extension type radiator for transformers, characterized in that. According to claim 1,
The connecting block is a corrugated fin length extension type radiator for a transformer, characterized in that it has a plurality of reinforcing ribs therein.

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