CN219626444U

CN219626444U - Transformer cooling fin

Info

Publication number: CN219626444U
Application number: CN202320930842.1U
Authority: CN
Inventors: 吕月军; 刘明; 郭衍爽; 孙海清; 宁志腾; 张传兴
Original assignee: Yichang Chuneng Transformer Co ltd
Current assignee: Yichang Chuneng Transformer Co ltd
Priority date: 2023-04-23
Filing date: 2023-04-23
Publication date: 2023-09-01
Anticipated expiration: 2033-04-23

Abstract

The utility model provides a transformer cooling fin which comprises a cooling fin main body, wherein a plurality of oil channels which are uniformly and equidistantly arranged are arranged in the cooling fin main body, a semicircular oil inlet is arranged in the center of the top of the cooling fin main body, two oil guide grooves which are positioned above the oil channels are arranged in the cooling fin main body, the two oil guide grooves are symmetrically distributed by taking the semicircular oil inlet as the center, one end of each oil guide groove is connected with the semicircular oil inlet, the other end of each oil guide groove is connected with the side inner wall of the cooling fin main body, and the oil guide grooves incline from the direction of the semicircular oil inlet to the direction of the side inner wall of the cooling fin main body. Through setting up the oil guide groove between semi-circular oil inlet and the oil duct of fin main part, be convenient for shunt the oil of inflow through the oil guide groove to effectually avoid the oil to flow into in a large number and be close to the heat dissipation oil duct of collecting oil pipe, solved the local slow heat dissipation of fin, the poor problem of radiating effect.

Description

Transformer cooling fin

Technical Field

The utility model relates to the field of transformer heat dissipation, in particular to a transformer heat sink.

Background

The radiator consists of a plurality of radiating fins, a mutually communicated radiating oil cavity is formed in each radiating fin, when the transformer works, oil heated by the immersed coil radiates heat through the radiating oil cavity flowing into the radiating fins, and the cooled transformer oil flows back into the oil tank of the immersed coil again, so that the circulation is repeated, and the purpose of reducing the temperature rise of the transformer oil is achieved. The radiating fin of the transformer is an important part on transformer equipment, and has the main function of radiating heat of the transformer during working so as to ensure the normal working of the transformer.

The heat dissipation oil cavities of the existing radiating fins are vertically distributed at equal intervals, and a cavity is reserved between the existing radiating fins and the oil collecting pipe, so that a large amount of oil flows into the heat dissipation oil duct close to the oil collecting pipe, the oil flowing through the heat dissipation oil duct far away from the oil inlet pipe is less, the resistance is large, the oil flow speed is low, the whole radiator is caused to be slow in local heat dissipation, the heat dissipation effect is poor, the temperature reduction of a transformer is affected, and the radiating fins of the transformer are provided to solve the problems.

Disclosure of Invention

The utility model mainly aims to provide a transformer cooling fin, which solves the problem that a large amount of oil flows into a cooling oil duct close to an oil collecting pipe, and less oil flows in the cooling oil duct far from an oil inlet pipe.

In order to solve the technical problems, the utility model adopts the following technical scheme: the transformer cooling fin comprises a cooling fin main body, wherein a plurality of oil channels which are uniformly and equidistantly arranged are arranged in the cooling fin main body, a semicircular oil inlet is formed in the center of the top of the cooling fin main body, two oil guide grooves which are positioned above the oil channels are arranged in the cooling fin main body, the two oil guide grooves are symmetrically distributed by taking the semicircular oil inlet as the center, one end of each oil guide groove is connected with the semicircular oil inlet, the other end of each oil guide groove is connected with the side inner wall of the cooling fin main body, and the oil guide grooves incline from the direction of the semicircular oil inlet to the direction of the side inner wall of the cooling fin main body;

the oil guide groove comprises a U-shaped groove, extension plates which are arranged on two sides of the U-shaped groove and connected with the inner wall surface of the radiating fin main body, and a plurality of oil guide holes which are uniformly formed in the bottom wall of the U-shaped groove.

In the preferred scheme, a partition plate is arranged between two adjacent oil channels.

In the preferred scheme, a semicircular oil outlet is arranged at the bottom center of the radiating fin main body.

In the preferred scheme, the diameter of the oil guide hole gradually becomes smaller from the semicircular oil inlet direction to the inner wall direction of the radiating fin main body side.

In the preferred scheme, all be provided with bar oil groove on the opposite wall of U-shaped groove.

In the preferred scheme, a vertical oil inlet positioned at the center of the semicircular oil inlet is arranged between the opposite ends of the two oil guide grooves.

In a preferred embodiment, the partition plate at the center is located right below the vertical oil inlet.

In the preferred scheme, the oil guide hole closest to the semicircular oil inlet is positioned above the second baffle plate at the center.

In the preferred scheme, all be provided with oil collecting pipe connecting piece on semicircular oil inlet and the semicircular oil-out, oil collecting pipe connecting piece includes U-shaped connecting piece and sets up the intercommunication groove on U-shaped connecting piece diapire, and wherein the width of U-shaped connecting piece is wider than the hot plate main part, and the height of two lateral walls of U-shaped connecting piece is higher than towards fin main part outer wall surface.

The utility model provides a transformer cooling fin, which is characterized in that an oil guide groove is arranged between a semicircular oil inlet and an oil duct of a cooling fin main body, so that the flowing-in oil is conveniently split through the oil guide groove, a large amount of oil is effectively prevented from flowing into a cooling oil duct close to an oil collecting pipe, and the problems of slow local cooling and poor cooling effect of the cooling fin are solved.

Drawings

The utility model is further illustrated by the following examples in conjunction with the accompanying drawings:

FIG. 1 is a cross-sectional view of a fin body upper structure of the present utility model;

FIG. 2 is a block diagram of the oil guide groove of the present utility model;

FIG. 3 is a top view of the oil sump structure of the present utility model;

FIG. 4 is a diagram showing a connection structure of an oil guide groove and a strip-shaped oil outlet groove;

FIG. 5 is a block diagram of a fin body and header tube connection of the present utility model;

FIG. 6 is a block diagram of a header connection of the present utility model;

in the figure: a fin main body 1; a semicircular oil inlet 101; an oil passage 102; a partition plate 103; an oil guiding groove 2; a U-shaped groove 201; an extension plate 202; an oil guide hole 203; a strip-shaped oil outlet groove 204; a collector tube connector 3; a U-shaped connector 301; a communication groove 302; a projection 303.

Detailed Description

Example 1

As shown in fig. 1-4, a transformer cooling fin comprises a cooling fin main body 1, wherein the cooling fin main body 1 is formed by welding two symmetrical single sheets, a cooling oil cavity is formed between the two single sheets, a plurality of evenly equidistantly arranged oil channels 102 are arranged in the cooling oil cavity of the cooling fin main body 1, a partition plate 103 is fixedly arranged between every two adjacent oil channels 102, and the oil channels 102 are isolated through the partition plate 103.

In this embodiment, the oil passage 102 is partitioned into seven by five partition plates 103.

A semicircular oil inlet 101 is arranged at the center of the top of the radiating fin main body 1, and a semicircular oil outlet is arranged at the center of the bottom.

The inside of fin main part 1 is provided with two oil guiding grooves 2 that are located the oil duct 102 top, and oil guiding groove 2 is located the cavity between oil duct 102 and the semicircular oil inlet 101, and two oil guiding grooves 2 are used semicircular oil inlet 101 as the central symmetry distribution, and the one end of oil guiding groove 2 is connected with semicircular oil inlet 101 to make the oil that semicircular oil inlet 101 got into flow into oil guiding groove 2, the other end is connected with the side inner wall of fin main part 1, and oil guiding groove 2 is inclined towards the side inner wall direction of fin main part 1 by semicircular oil inlet 101 direction, thereby makes oil flow along oil guiding groove 2 to the both sides of fin main part 1.

Both ends of the oil guiding groove 2 are inclined sections, so that the oil guiding groove is better connected with the semicircular oil inlet 101 and the side inner wall of the radiating fin main body 1.

The oil guiding groove 2 comprises a U-shaped groove 201, extension plates 202 which are arranged on two sides of the U-shaped groove 201 and connected with the inner wall surfaces of the radiating fin main body 1, and a plurality of oil guiding holes 203 which are uniformly formed in the bottom wall of the U-shaped groove 201, wherein two ends of the U-shaped groove 201 are open, one end of each of the U-shaped groove is connected with the semicircular oil inlet 101, the other end of each of the U-shaped groove is connected with the side inner wall of the radiating fin main body 1, the extension plates 202 are integrally formed with the U-shaped groove 201 and welded with the front inner wall surface and the rear inner wall surface of the radiating fin main body 1, the extension plates 202 are located at the tops of two sides of the U-shaped groove 201, the shape of each of the oil guiding holes 203 can be round holes or strip holes, round holes are optimized in the embodiment, and the number of the oil guiding holes 203 is six.

In use, the incoming oil flows to both sides through the obliquely arranged U-shaped grooves 201 and flows out downwards through the oil guide holes 203 along the way and into the corresponding oil passages 102.

In a preferred embodiment, the diameter of the oil guiding hole 203 is gradually reduced from the direction of the semicircular oil inlet 101 toward the inner wall of the fin main body 1, so as to increase the oil outlet speed of the ascending slope section, thereby avoiding that the oil flows into the bottom end along the inclined direction and is accumulated at the bottom end, and the inflow on both sides is larger than the inflow in the middle, so that the non-uniformity is caused.

In the preferred scheme, all be provided with bar oil groove 204 on the opposite wall of U-shaped groove 201, when the oil mass appears piling up, reach certain altitude oil and can flow through the bar oil groove 204 that sets up on the wall of U-shaped groove 201 to avoid appearing the condition of jam.

In the preferred scheme, a vertical oil inlet 104 positioned at the center of the semicircular oil inlet 101 is arranged between the opposite ends of the oil guide grooves 2, and the opposite ends of the two oil guide grooves 2 are respectively positioned at two sides of the center line of the semicircular oil inlet 101, so that oil can directly enter the oil duct 102 positioned in the middle through the vertical oil inlet 104, the oil inflow speed is further improved, and the blockage caused by the diversion of the oil guide grooves 2 is avoided.

Wherein, the baffle plate 103 in the center is positioned right below the vertical oil inlet 104, and the oil flowing in from the vertical oil inlet 104 can be split into the oil channels 102 on two sides of the central baffle plate 103, so that the split efficiency is improved.

In addition, the oil guiding hole 203 closest to the semicircular oil inlet 101 is located above the second partition plate 103 at the center, and because the vertical oil inlets 104 which directly flow into are directly arranged at the two oil guiding grooves 2, the oil guiding hole 203 close to the semicircular oil inlet 101 is arranged at a position relatively far from the central oil duct 102, so that the non-uniformity caused by too many inflow points of the central oil duct 102 is avoided.

When the oil guide device is used, oil entering from the semicircular oil inlet 101 enters the oil passage 102 in the middle relatively along the vertical oil inlet 104, and the other part is split through the oil passages 102 on two opposite sides of the oil guide hole 203 on the oil guide groove 2, so that when the oil quantity is too large, the oil can be discharged through the strip-shaped oil outlet groove 204 on the side wall surface of the oil guide groove 2, and the blockage is avoided.

Example 2

5-6, the oil collecting pipe connecting piece 3 is welded on the semicircular oil inlet 101 and the semicircular oil outlet, the oil collecting pipe connecting piece 3 comprises a U-shaped connecting piece 301 and a communicating groove 302 formed on the bottom wall of the U-shaped connecting piece 301, the U-shaped connecting piece 301 is perfectly attached to the semicircular oil inlet 101 or the semicircular oil outlet, the width of the U-shaped connecting piece 301 is wider than that of the heat fin main body 1, the heights of two side walls of the U-shaped connecting piece 301 are higher than that of the heat fin main body 1, and therefore the contact area with the oil collecting pipe is enlarged through the U-shaped connecting piece 301, and meanwhile welding of the two parts is facilitated.

It should be noted that, the size of the communication groove 302 is the same as the size of the semicircular oil inlet 101 or the semicircular oil outlet, and both are communicated.

In the preferred scheme, all be provided with bulge 303 on the opposite face on two lateral wall tops of U-shaped connecting piece 301, bulge 303 is cylindric, can play certain centre gripping effect to the oil collecting pipe of embedding through the tension of bulge 303 to improve welded accuracy through cylindric and the connecting wire that the tube face formed.

The above embodiments are only preferred embodiments of the present utility model, and should not be construed as limiting the present utility model, and the scope of the present utility model should be defined by the claims, including the equivalents of the technical features in the claims. I.e., equivalent replacement modifications within the scope of this utility model are also within the scope of the utility model.

Claims

1. The utility model provides a transformer fin, includes fin main part (1), the inside of fin main part (1) is provided with oil duct (102) that a plurality of even equidistance set up, and the top center department of fin main part (1) is provided with semicircular oil inlet (101), characterized by: two oil guide grooves (2) are formed in the radiating fin main body (1) and are positioned above the oil duct (102), the two oil guide grooves (2) are symmetrically distributed by taking the semicircular oil inlet (101) as a center, one end of each oil guide groove (2) is connected with the semicircular oil inlet (101), the other end of each oil guide groove is connected with the side inner wall of the radiating fin main body (1), and the oil guide grooves (2) incline from the direction of the semicircular oil inlet (101) to the direction of the side inner wall of the radiating fin main body (1);

the oil guide groove (2) comprises a U-shaped groove (201), extension plates (202) which are arranged on two sides of the U-shaped groove (201) and connected with the inner wall surface of the radiating fin main body (1), and a plurality of oil guide holes (203) which are uniformly formed in the bottom wall of the U-shaped groove (201).

2. A transformer heat sink as recited by claim 1, wherein: a partition plate (103) is arranged between two adjacent oil channels (102).

3. A transformer heat sink as recited by claim 1, wherein: a semicircular oil outlet is arranged at the center of the bottom of the radiating fin main body (1).

4. A transformer heat sink as recited by claim 1, wherein: the diameter of the oil guide hole (203) gradually decreases from the direction of the semicircular oil inlet (101) to the direction of the side inner wall of the radiating fin main body (1).

5. A transformer heat sink as recited by claim 4 wherein: the opposite wall surfaces of the U-shaped groove (201) are respectively provided with a strip-shaped oil outlet groove (204).

6. A transformer heat sink as recited by claim 2 wherein: a vertical oil inlet (104) positioned at the center of the semicircular oil inlet (101) is arranged between the opposite ends of the two oil guide grooves (2).

7. A transformer heat sink as recited by claim 6 wherein: the partition plate (103) at the center is positioned right below the vertical oil inlet (104).

8. A transformer heat sink as recited by claim 7 wherein: the oil guide hole (203) closest to the semicircular oil inlet (101) is positioned above the second partition plate (103) at the center.

9. A transformer heat sink according to claim 3, wherein: the heat sink is characterized in that oil collecting pipe connecting pieces (3) are arranged on the semicircular oil inlet (101) and the semicircular oil outlet, each oil collecting pipe connecting piece (3) comprises a U-shaped connecting piece (301) and a communicating groove (302) formed in the bottom wall of the U-shaped connecting piece (301), the width of the U-shaped connecting piece (301) is wider than that of the heat sink main body (1), and the heights of two side walls of the U-shaped connecting piece (301) are higher than that of the outer wall surface of the heat sink main body (1).

10. A transformer heat sink as recited by claim 9 wherein: the U-shaped connecting piece (301) is characterized in that protruding portions (303) are arranged on opposite faces of the top ends of the two side walls, and the protruding portions (303) are cylindrical.