CN221008727U

CN221008727U - Oil-guiding type cooling fin for transformer radiator

Info

Publication number: CN221008727U
Application number: CN202323053724.6U
Authority: CN
Inventors: 王晟; 陈楷闻; 钱柯恒; 何建华
Original assignee: Changshu Youbang Radiator Co ltd
Current assignee: Changshu Youbang Radiator Co ltd
Priority date: 2023-11-13
Filing date: 2023-11-13
Publication date: 2024-05-24
Anticipated expiration: 2033-11-13

Abstract

An oil-guiding type radiating fin for a transformer radiator consists of two radiating single sheets, wherein an oil circulation cavity is formed between the two radiating single sheets; the upper and lower parts of the two heat dissipation singlechips are respectively formed into an oil inlet flow dividing part and an oil outlet flow collecting part, the upper end of the heat dissipation singlechips is also provided with an oil inlet pipe connecting lantern ring, and the lower end of the heat dissipation singlechips is provided with an oil outlet pipe connecting lantern ring; a plurality of corrugated oil duct parts are arranged on the heat dissipation single sheet at intervals, and a connecting welding bead is arranged between two adjacent corrugated oil duct parts; the characteristics are as follows: the connecting bead is provided with a connecting bead vertical section, a connecting bead oil inlet guide section and a connecting bead oil outlet guide section, wherein the connecting bead oil inlet guide section is formed on the oil inlet split part and extends from the top end of the connecting bead vertical section towards the oil inlet pipe connecting lantern ring, and the connecting bead oil outlet guide section is formed on the oil outlet current collecting part and extends from the bottom end of the connecting bead vertical section towards the oil outlet pipe connecting lantern ring. The heat exchange oil is guided, the heat dissipation effect is balanced, and the heat dissipation efficiency is good.

Description

Oil-guiding type cooling fin for transformer radiator

Technical Field

The utility model belongs to the technical field of cooling equipment for transformers, and particularly relates to an oil-guiding type cooling fin for a transformer radiator.

Background

With the rapid development of the economy and the rapid growth of the manufacturing industry in China, the demand of power for various fields in China is also growing year by year, and the demand of power transformers is also rapidly increasing. Most of the existing transformers are oil immersed transformers, which are novel high-performance transformers with more reasonable structures and better performances, oil is used as a main insulating means of the transformers and cooling media of the transformers, when the power transformers are operated, internal windings, iron cores and other parts can generate loss, the loss is converted into heat, the heat is transferred to an oil tank wall through heat conduction and convection of transformer oil, the temperatures of the windings, the iron cores, the oil tank wall and the oil level can be continuously increased, the temperature rise can directly influence the service lives of insulating materials such as the windings, and therefore the temperature must be controlled within a certain range, and the consumption of a finned radiator which is a core part capable of controlling the internal temperature of the transformers is also increased. As known in the art, the plate radiator is a high-efficiency heat dissipation device configured at two sides of the long side direction of the oil immersed transformer body and connected by means of flanges, and the plate radiator and heat conduction oil inside the oil immersed transformer form a circulation cooling loop, so that the oil immersed transformer can stably run for a long time, an iron core inside the oil immersed transformer is cooled, the temperature rise of the oil immersed transformer is controlled, and the normal running and safety of a power supply and distribution system are further ensured.

The prior art of the fin radiator is not lacking in the chinese patent literature, and the following are cited: CN209947613U (high-efficiency radiator fin for oil immersed transformer), CN206225138U (radiator fin for transformer), CN210722669U (radiator fin for power transformer), CN203706791U (novel energy-saving radiator fin for transformer), etc., typically "a radiator fin for transformer" as described in the chinese patent publication No. CN206451573U, comprising a plurality of radiating fins arranged at intervals, two ends of each radiating fin being connected to a liquid inlet pipe and a liquid outlet pipe, respectively; the radiating fin comprises two pressing plates which are overlapped together, a plurality of strip-shaped ripples which are arranged in parallel are formed on at least one of the two pressing plates, a welding bead used for welding the two pressing plates is arranged between the strip-shaped ripples, the ripples comprise wave crests and wave troughs, the wave troughs are attached to the other opposite pressing plate, the wave crests are separated from the other opposite pressing plate to form a cooling liquid channel, and two ends of the cooling liquid channel are respectively connected with a liquid inlet pipe and a liquid outlet pipe. The cooling device has the advantages that the cooling fins are formed by overlapping two pressing plates and the cooling liquid channels are formed by the corrugated shapes of the pressing plates, so that the number of the cooling liquid channels and the heat dissipation area of the cooling fins are increased, and the heat dissipation efficiency is ensured, but the technical scheme has common general defects of the fin type radiator in the patent literature and the prior art: in the prior art, the liquid inlet pipe and the liquid outlet pipe are arranged at the central positions of the two end parts of the radiating fin in the height direction, and because the welding beads are vertically arranged, oil liquid always flows to the middle part of the radiating fin only from the upper part in the process of entering the radiating fin and flowing into the liquid outlet pipe through the liquid inlet pipe, and cannot smoothly flow to the edge parts of the two sides of the radiating fin, so that the radiating efficiency of different parts of the radiating fin is different, the oil flow in the radiating fin is unbalanced, and especially the oil liquid inflow quantity at the parts of the two sides of the radiating fin is less, so that the radiating effect is poor, the loss easily occurs in the middle part of the radiating fin for a long time, and the whole service life of the radiating fin is also influenced.

In view of the above, it is necessary to optimize the structure of the existing fin to solve the problem of the imbalance of the heat dissipation effect. To this end, the inventors have advantageously devised that the technical solutions described below are created in this context.

Disclosure of utility model

The utility model aims to provide the oil-guiding type radiating fin for the transformer radiator, which is simple, compact, reliable and durable in structure, is beneficial to optimizing the weld bead structure of the radiating fin to conduct efficient flow guiding on heat exchange oil entering and exiting the radiating fin, so that the isothermal radiating efficiency is effectively improved, and the radiating effect of the radiating fin body is balanced.

The utility model accomplishes the task by this, a kind of oil-guiding type radiator fin used for radiator of the transformer, it is made up of two pieces of heat dissipation monolithic that set up relatively and shape and size are the same, form an oil fluid circulation cavity between two pieces of heat dissipation monolithic; the upper part and the lower part of the two radiating singlechips are respectively formed into an oil inlet flow dividing part and an oil outlet flow collecting part, an oil inlet pipe connecting lantern ring is further arranged at the middle position of the upper end part of the radiating singlechips and above the corresponding oil inlet flow dividing part, and an oil outlet pipe connecting lantern ring is further arranged at the middle position of the lower end part of the radiating singlechips and below the corresponding oil outlet flow collecting part; a plurality of corrugated oil duct parts are arranged on the heat dissipation single sheets at intervals corresponding to the positions between the oil inlet flow distribution part and the oil outlet flow collection part, and connecting welding beads are arranged between two adjacent corrugated oil duct parts, and the corresponding connecting welding beads between the two heat dissipation single sheets are mutually welded and fixed together; the characteristics are that: the connecting bead positioning structure is in the position department between corresponding to oil feed pipe connecting collar and the oil outlet pipe connecting collar, just the connecting bead possesses connecting bead vertical section, connecting bead oil feed direction section and connecting bead play oil direction section, connecting bead vertical section is followed the vertical extension setting of heat dissipation monolithic direction of height, just connecting bead oil feed direction section constitutes respectively with connecting bead play oil direction section and is in the upper and lower both ends position department of connecting bead vertical section, connecting bead oil feed direction section constitutes on the oil feed reposition of redundant personnel portion and from the top orientation of connecting bead vertical section oil feed pipe connecting collar extends the setting, and connecting bead play oil direction section then constitutes on the play oily collector and from the bottom orientation of connecting vertical section oil outlet pipe connecting collar extends the setting.

In a specific embodiment of the present utility model, when the number of the plurality of connecting beads is an odd number, the connecting bead oil inlet guide sections and the connecting bead oil outlet guide sections at the upper and lower ends of the connecting bead at the central position of the heat dissipation monolithic are vertically arranged, and the connecting bead oil inlet guide sections and the connecting bead oil outlet guide sections at the upper and lower ends of the connecting bead at the two sides of the central position are obliquely arranged.

In another specific embodiment of the present utility model, when the number of the plurality of connecting beads is even, the plurality of connecting beads are symmetrically arranged along the vertical center line of the heat dissipation monolithic, and the connecting bead oil inlet guide sections and the connecting bead oil outlet guide sections at the upper end and the lower end of the even connecting beads are all obliquely arranged.

In still another specific embodiment of the present utility model, a pair of oil inlet split diagonal plates are formed at the upper part of the oil inlet split and at positions corresponding to the left and right sides of the oil inlet pipe connecting collar; and a pair of oil outlet and collector diagonal plates are formed at the lower part of the oil outlet and collector and at the positions corresponding to the left and right sides of the oil outlet pipe connecting collar.

In yet another specific embodiment of the present utility model, two heat dissipation singlets are disposed face to face and the two edges are welded together.

In still another specific embodiment of the present utility model, the corrugated oil passage portion has a wave-shaped cross section and is composed of a plurality of oil passage peaks and a plurality of oil passage valleys arranged in parallel along the height direction of the heat dissipation monolith.

In a further specific embodiment of the present utility model, the corrugated oil passage portion on the heat dissipation monolithic sheet is pressed by stamping or rolling.

In a further specific embodiment of the present utility model, the integral material of the heat dissipation monolithic is aluminum alloy or copper.

In still another specific embodiment of the present utility model, the number of the corrugated oil passage portions is one more than the number of the connecting beads.

In yet another specific embodiment of the present utility model, the oil inlet pipe connecting collar and the oil outlet pipe connecting collar are both semi-circular concave arc plate shaped structures.

The technical effects provided by the utility model are as follows: firstly, a connecting bead oil inlet guide section and a connecting bead oil outlet guide section are additionally arranged at the upper end and the lower end of the connecting bead, when heat exchange oil flows into the oil inlet split part, the heat exchange oil can flow along the connecting bead oil inlet guide section, so that the oil uniformly flows into the corrugated oil duct parts at all parts of the radiating single piece and contacts the corrugated oil duct parts, meanwhile, the oil is better collected and flows out of the oil outlet pipe in the oil outlet and collecting part, so that the oil can smoothly circulate, and particularly, the flowing resistance of the oil to the edge positions of the two sides of the radiating fin can be reduced, the isothermal radiating efficiency of the radiating fin is improved, the radiating effect of the radiating fin body is balanced, the flow velocity of the variable pressure oil is favorably improved through the flow guiding of the connecting bead oil inlet guide section and the connecting bead oil outlet guide section, the radiating effect is further improved, and the service life of the radiating fin can be prolonged; and secondly, by additionally arranging the oil inlet flow distribution part inclined plate and the oil outlet flow collection part inclined plate, the oil flowing into the oil inlet flow distribution part from the oil inlet pipe can flow into the corrugated oil duct parts at the two side parts in a smooth and smooth mode with smaller resistance, and the heat dissipation efficiency of the heat dissipation fin is further improved.

Drawings

FIG. 1 is a schematic diagram of an embodiment of the present utility model;

FIG. 2 is a cross-sectional view of the internal structure of the embodiment shown in FIG. 1;

FIG. 3 is a schematic diagram of the upper structure of the heat dissipating monolith in the embodiment shown in FIG. 1;

Fig. 4 is a schematic structural diagram of another embodiment of the present utility model.

In the figure: 1. the heat dissipation single piece, 11, 111, 12, 121, 13, 14, 15, 151, 152, 16, 161, 162, 163, and 163. 2. An oil flow chamber.

Detailed Description

In order that the technical spirit and advantages of the present utility model may be more clearly understood, reference will now be made in detail to the following examples, which are not intended to limit the scope of the present utility model, but rather are merely equivalent in form to the present utility model.

In the following description, any reference to directional or azimuthal concepts of up, down, left, right, front and rear is based on the positional state in the illustrated drawing being described, and thus should not be construed as limiting the scope of the utility model in any way.

Embodiment one:

referring to fig. 1 to 3, an oil guiding type heat sink for a transformer radiator is shown, and fig. 2 shows that the oil guiding type heat sink is composed of two heat dissipation single sheets 1 which are oppositely arranged and have the same shape and size, and an oil circulation chamber 2 is formed between the two heat dissipation single sheets 1; the upper part and the lower part of the two heat dissipation single sheets 1 are respectively formed into an oil inlet flow dividing part 11 and an oil outlet flow collecting part 12, the oil inlet flow dividing parts 11 of the two heat dissipation single sheets 1 are correspondingly arranged, an oil inlet chamber is formed between the two oil inlet flow dividing parts, and the oil outlet flow collecting parts 12 of the two heat dissipation single sheets 1 are correspondingly arranged as well, and an oil outlet chamber is formed between the two oil outlet flow dividing parts; an oil inlet pipe connecting collar 13 is further provided at a middle position of the upper end portion of the heat dissipation single sheet 1 and above the oil inlet split portion 11, and an oil outlet pipe connecting collar 14 is further provided at a middle position of the lower end portion of the heat dissipation single sheet 1 and below the oil outlet collecting portion 12; and a plurality of corrugated oil passage parts 15 are arranged on the heat dissipation single sheet 1 at intervals corresponding to the positions between the oil inlet flow dividing part 11 and the oil outlet flow collecting part 12, and connecting welding beads 16 are arranged between two adjacent corrugated oil passage parts 15, and the corresponding connecting welding beads 16 between the two heat dissipation single sheets 1 are mutually welded and fixed together.

The technical scheme provided by the utility model is characterized in that: the plurality of connecting beads 16 are positioned and formed at positions corresponding to the positions between the oil inlet pipe connecting collar 13 and the oil outlet pipe connecting collar 14, the connecting beads 16 are provided with a connecting bead vertical section 161, a connecting bead oil inlet guide section 162 and a connecting bead oil outlet guide section 163, the connecting bead vertical section 161 is vertically extended and arranged along the height direction of the heat radiation single sheet 1, the connecting bead oil inlet guide section 162 and the connecting bead oil outlet guide section 163 are respectively formed at the upper end and the lower end positions of the connecting bead vertical section 161, the connecting bead oil inlet guide section 162 is formed on the oil inlet split part 11 and is extended and arranged from the top end of the connecting bead vertical section 161 towards the oil inlet pipe connecting collar 13, and the connecting bead oil outlet guide section 163 is formed on the oil outlet collecting part 12 and is extended and arranged from the bottom end of the connecting bead oil outlet vertical section 161 towards the oil outlet pipe connecting collar 14.

As shown in fig. 1, in the present embodiment, the number of the connecting beads 16 is an odd number, and five connecting bead oil inlet guide sections 162 and connecting bead oil outlet guide sections 163 are vertically disposed at the upper and lower ends of the connecting beads 16 at the central position of the heat dissipation sheet 1, and the connecting bead oil inlet guide sections 162 and the connecting bead oil outlet guide sections 163 are obliquely disposed at the upper and lower ends of the connecting beads 16 at the two sides of the central position; and four connecting beads 16 located at both sides of the connecting bead 16 at the central position are symmetrically arranged along the vertical center line of the heat dissipation monolith 1.

In the present embodiment, a pair of oil inlet split inclined plates 111 are formed at the upper portion of the oil inlet split 11 and at positions corresponding to the left and right sides of the oil inlet pipe connecting collar 13; a pair of oil discharging and collecting part inclined plates 121 are formed at the lower part of the oil discharging and collecting part 12 and at positions corresponding to the left and right sides of the oil outlet pipe connecting collar 14; further, it is ensured that the oil flowing from the oil inlet pipe into the oil inlet split portion 11 can flow into the corrugated oil passage portions 15 on both side edges in a smooth and smooth manner with less resistance, and is more intensively collected in the oil outlet-collecting portion 12 on the lower portion.

Further, the two radiating singlechips 1 are arranged face to face and welded and fixed together at the edge positions; the two radiating singlechips 1 are in fit and are connected and fixed together in a welded mode, so that the integral strength of the radiating fin can be effectively improved, and meanwhile, the welding operation is easy.

Referring to fig. 2, the corrugated oil passage portion 15 has a wave-shaped cross section and is composed of a plurality of oil passage peaks 151 and a plurality of oil passage valleys 152 arranged in parallel along the height direction of the heat dissipation monolith 1.

Preferably, the corrugated oil passage portion 15 on the heat dissipation monolith 1 is pressed by punching or rolling; in this embodiment, the preparation method of rolling is preferred, and the rolling can ensure the smoothness of the arc surface at the connection position of the oil passage peak 151 and the oil passage trough 152, so as to ensure the stability and smoothness of the oil flow.

In this embodiment, the whole material of the heat dissipation monolithic 1 is aluminum alloy or copper; preferably, the aluminum alloy plate is manufactured by performing seam welding, shoulder welding, spot welding and circular arc welding on the aluminum alloy plate, so that good tightness and strength are ensured, and the risk of oil leakage is reduced to the greatest extent. The manufacturing mode of the heat dissipation single sheet 1 is continuous stamping forming, and the heat dissipation single sheet has the advantages of simple manufacturing process, high production efficiency and small raw material purchasing difficulty.

Referring to fig. 1 and 3 again, the number of the corrugated oil passage portions 15 is one more than the number of the connecting beads 16; the number of corrugated oil passage portions 15 in the drawing is six, and five connecting beads 16 are provided at intervals between the six corrugated oil passage portions 15.

Further, the oil inlet pipe connecting collar 13 and the oil outlet pipe connecting collar 14 are both in a semicircular inward concave arc plate shape, and the oil inlet pipe connecting collar 13 and the oil outlet pipe connecting collar 14 are respectively used for being matched and connected with a tubular oil inlet pipe and an oil outlet pipe.

Please refer to fig. 1 and fig. 2 in combination, which illustrate the working principle of the technical scheme provided by the present utility model: after the transformer operates, the hot oil in the oil tank enters the cooling fins through the diversion of the oil inlet pipe, and flows into the oil inlet diversion cavity between the oil inlet diversion parts 11 in the two cooling singlechips 1 at first (the connection structure of the oil inlet pipe can be referred to as a 'transformer fin type radiator' disclosed in the patent of the utility model with the authorized publication number of CN 206451573U), the hot oil flows into the oil circulation cavity 2 fully and uniformly after being guided by the oil inlet diversion part inclined plates 112 and the plurality of connection bead oil inlet guide sections 162 on two sides of the oil inlet pipe connection collar 13, the oil is fully contacted and cooled with the corrugated oil duct parts 15 of the two cooling singlechips 1 in the oil circulation cavity 2, the temperature of the oil is reduced, and then the cooled hot oil flows into the oil outlet collection cavity formed by clamping of the two oil outlet collection parts 12, flows into the oil outlet pipe after being guided by the connection bead oil outlet guide sections 163 and the oil outlet collection part inclined plates 121 and finally flows back into the oil tank of the radiator, and the whole flowing process is smooth and uniform, and the efficiency of the cooling singlechips 1 is effectively improved.

Embodiment two:

Referring to fig. 4, in the present embodiment, unlike the first embodiment, the number of the connecting beads 16 is an even number, and the number of the connecting beads 16 shown in fig. 4 is six; the even number of connecting beads 16 are symmetrically arranged along the vertical central line of the heat dissipation single sheet 1, and the connecting bead oil inlet guide sections 162 and the connecting bead oil outlet guide sections 163 at the upper end and the lower end of the even number of connecting beads 16 are obliquely arranged so as to better guide oil; meanwhile, the number of the aforementioned corrugated oil passage portions 15 is seven, and six connecting beads 16 are provided at intervals between the seven corrugated oil passage portions 15.

Because the connecting bead 16 provided by the application has strong adaptability, the first embodiment and the second embodiment have the characteristics, and can be flexibly selected according to the related design and use requirements of the heat radiating unit 1.

In this embodiment, the number of the connecting beads 16 is the same as that of the first embodiment except that the number is different from that of the first embodiment, and the description thereof is omitted.

In summary, the technical scheme provided by the utility model overcomes the defects in the prior art, successfully completes the task of the utility model, and faithfully honors the technical effects carried by the applicant in the technical effect column above.

Claims

1. An oil guiding type cooling fin for a transformer radiator is composed of two cooling single sheets (1) which are oppositely arranged and have the same shape and size, an oil circulation cavity (2) is formed between the two cooling single sheets (1), an oil inlet flow dividing part (11) and an oil outlet flow collecting part (12) are respectively formed at the upper part and the lower part of the two cooling single sheets (1), an oil inlet pipe connecting sleeve ring (13) is further arranged at the middle position of the upper end part of the cooling single sheet (1) and above the oil inlet flow dividing part (11), and an oil outlet pipe connecting sleeve ring (14) is further arranged at the middle position of the lower end part of the cooling single sheet (1) and below the oil outlet flow collecting part (12); a plurality of corrugated oil duct parts (15) are arranged on the heat dissipation single sheets (1) at intervals corresponding to the positions between the oil inlet flow distribution parts (11) and the oil outlet flow collection parts (12), and connecting welding beads (16) are arranged between two adjacent corrugated oil duct parts (15), and the corresponding connecting welding beads (16) between the two heat dissipation single sheets (1) are mutually welded and fixed together; the method is characterized in that: the connecting bead (16) is positioned and formed at a position corresponding to between the oil inlet pipe connecting collar (13) and the oil outlet pipe connecting collar (14), the connecting bead (16) is provided with a connecting bead vertical section (161), a connecting bead oil inlet guide section (162) and a connecting bead oil outlet guide section (163), the connecting bead vertical section (161) is vertically extended and arranged along the height direction of the radiating single sheet (1), the connecting bead oil inlet guide section (162) and the connecting bead oil outlet guide section (163) are respectively formed at the upper end position and the lower end position of the connecting bead vertical section (161), the connecting bead oil inlet guide section (162) is formed on the oil inlet splitting part (11) and extends from the top end of the connecting bead vertical section (161) to the oil inlet pipe connecting collar (13), and the connecting bead oil outlet guide section (163) is formed on the oil outlet collecting part (12) and extends from the bottom end of the connecting bead vertical section (161) to the oil outlet pipe connecting collar (14).

2. An oil guiding fin for a transformer radiator as claimed in claim 1, wherein: when the number of the connecting beads (16) is odd, the connecting bead oil inlet guide sections (162) and the connecting bead oil outlet guide sections (163) which are positioned at the upper end and the lower end of the connecting bead (16) at the central position of the radiating single sheet (1) are vertically arranged, and the connecting bead oil inlet guide sections (162) and the connecting bead oil outlet guide sections (163) which are positioned at the upper end and the lower end of the connecting bead (16) at the two sides of the central position are obliquely arranged.

3. An oil guiding fin for a transformer radiator as claimed in claim 1, wherein: when the quantity of a plurality of coupling beads (16) is even, a plurality of coupling beads (16) can be along the vertical central line symmetry of heat dissipation monolithic (1), and coupling bead oil feed direction section (162) and coupling bead oil outlet direction section (163) at the upper and lower both ends of a plurality of coupling beads (16) of even number are the slant setting.

4. An oil guiding fin for a transformer radiator as claimed in claim 1, wherein: a pair of oil inlet split inclined plates (111) are formed at the upper part of the oil inlet split (11) and at the positions corresponding to the left and right sides of the oil inlet pipe connecting collar (13); a pair of oil outlet/collector diagonal plates (121) are formed at the lower part of the oil outlet/collector (12) and at positions corresponding to the left and right sides of the oil outlet pipe connecting collar (14).

5. An oil guiding fin for a transformer radiator as claimed in claim 1, wherein: the two radiating singlechips (1) are arranged face to face, and the two radiating singlechips are welded and fixed together at the edge positions.

6. An oil guiding fin for a transformer radiator as claimed in claim 1, wherein: the section of the corrugated oil duct part (15) is of a wave-shaped structure and consists of a plurality of oil duct peaks (151) and a plurality of oil duct troughs (152) which are arranged in parallel along the height direction of the radiating single sheet (1).

7. An oil guiding fin for a transformer radiator as claimed in claim 1, wherein: the corrugated oil duct part (15) on the heat dissipation single sheet (1) is formed by pressing in a stamping or rolling mode.

8. An oil guiding fin for a transformer radiator as claimed in claim 1, wherein: the whole material of the heat dissipation single sheet (1) is aluminum alloy or copper.

9. An oil guiding fin for a transformer radiator as claimed in claim 1, wherein: the number of the corrugated oil passage portions (15) is one more than the number of the connecting beads (16).

10. An oil guiding fin for a transformer radiator as claimed in claim 1, wherein: the oil inlet pipe connecting lantern ring (13) and the oil outlet pipe connecting lantern ring (14) are both in semicircular inward-concave arc-shaped plate-shaped structures.