Full-immersion evaporative cooling transformer heat dissipation structure
Technical Field
The invention relates to the technical field of transformers, in particular to a full-immersion evaporative cooling transformer heat dissipation structure.
Background
The heat dissipation problem is always a key technology of the transformer, the traditional oil-immersed transformer generally adopts mineral oil as an insulating and cooling medium, but the viscosity is high, the heat conduction performance is insufficient, the flash point is low, the transformer cannot be used in occasions with high requirements on fire prevention and explosion prevention, and the environment-friendly requirements cannot be met due to the difficulty in degradation
In order to solve the problem, people can be through welding the polylith on transformer tank outer wall and be the interval setting, and the heating panel that extends outwards, and the inside heat of transformer passes through on the oil tank wall transmits the heating panel, realizes the cooling to the transformer. The gap between two adjacent heat dissipation plates is small, so that a welding tool cannot extend into the space between the two heat dissipation plates for welding, the welding difficulty is high, two persons are required to cooperate during welding, one person places the heat dissipation plates on the outer wall of the oil tank, the heat dissipation plates are kept in a state of being perpendicular to the outer wall of the tank body, and the other person welds the heat dissipation plates on the outer wall of the oil tank, so that the welding efficiency is low, and the labor cost is increased; in addition, the heat dissipation plate is installed on the transformer before leaving the factory, so that the overall volume of the transformer is increased, the occupied space is large, and the logistics cost is increased.
Disclosure of Invention
Therefore, the invention aims to overcome the defects of low welding efficiency and high logistics cost caused by the welding mode adopted by the heat dissipation plate in the prior art, and provides the heat dissipation structure of the fully-immersed evaporative cooling transformer with high assembly efficiency.
Therefore, the invention provides a heat dissipation structure of a full-immersion evaporative cooling transformer, which comprises a box body, elastic pressure plate components and heat dissipation parts, wherein a plurality of groups of elastic pressure plate components are detachably arranged on the outer wall of the box body; the heat dissipation device comprises a plurality of heat dissipation pieces, a mounting plate and a heat dissipation plate, wherein the mounting plate and the heat dissipation plate are connected in a bending mode, the mounting plate is suitable for being inserted into the space between the elastic pressing plate assembly and the outer wall of the box body, the elastic pressing plate assembly is assembled with the box body under the elastic acting force of the elastic pressing plate assembly, and the heat dissipation plate faces the outside of the box body.
The heat dissipation pieces are two, and the mounting plates of the two heat dissipation pieces are correspondingly inserted from two sides of the elastic pressing plate assembly in the width direction.
The elastic pressing plate assembly comprises an elastic pressing plate and a plurality of fastening assemblies, the fastening assemblies are arranged at intervals along the length direction of the elastic pressing plate and are suitable for assembling the elastic pressing plate with the box body.
And the front end of the elastic pressing plate along the insertion direction of the mounting plate is provided with a chamfer.
The cross section of the elastic pressing plate is a rectangular frame.
The fastening assembly comprises a bolt and a nut, the head of one side of the bolt abuts against the elastic pressure plate, and the screw rod of the other side of the bolt penetrates through the first through hole of the elastic pressure plate and then is in threaded connection with the nut.
The nut is welded on the outer wall of the box body.
And a second through hole matched with the shape of the nut is formed in the side surface of the elastic pressing plate facing the outer wall of the box body, and the thickness of the elastic pressing plate is larger than that of the nut.
And a plurality of nut half holes matched with the shapes of the corresponding nuts are formed in the mounting plate.
The heat dissipation piece is internally sealed with phase change materials or water.
The technical scheme of the invention has the following advantages:
1. the invention provides a heat dissipation structure of a full-immersion evaporative cooling transformer, which comprises a box body, an elastic pressure plate assembly and a heat dissipation piece, wherein during assembly, the elastic pressure plate assembly is fixedly arranged on the outer wall of the box body, and then a mounting plate of the heat dissipation piece is inserted between the elastic pressure plate assembly and the outer wall of the box body from one side; in addition, the elastic pressing plate assembly, the heat radiating piece and the transformer box body can be separately packaged and transported, so that the occupied space is small, and the transportation cost is reduced.
2. According to the fully-immersed evaporative cooling transformer heat dissipation structure provided by the invention, the number of the heat dissipation parts is two, the mounting plates of the two heat dissipation parts are correspondingly inserted from the two sides of the width direction of the elastic pressing plate assembly respectively, namely, one group of the elastic pressing plate assemblies can be provided with the two heat dissipation parts, so that the assembly efficiency is improved, the number of the elastic pressing plate assemblies can be saved and the cost is reduced under the condition that the heat dissipation parts with the same number as the heat dissipation parts in the prior art are mounted.
3. According to the fully-immersed evaporative cooling transformer heat dissipation structure, the elastic pressing plate is provided with the chamfer angle at the front end along the insertion direction of the mounting plate, so that the mounting plate can be conveniently inserted along the chamfer angle in a guiding manner, and the assembly efficiency is improved.
4. According to the fully-immersed evaporative cooling transformer heat dissipation structure, the nut is welded on the outer wall of the box body, so that compared with a mode that the oil leakage of an oil tank is possibly caused by punching holes in the box body, the safety and reliability are higher.
5. According to the heat dissipation structure of the full-immersion evaporative cooling transformer, the second through hole matched with the shape of the nut is formed in the side face, facing the outer wall of the box body, of the elastic pressing plate, and the thickness of the elastic pressing plate is larger than that of the nut, so that a small gap can be ensured between the elastic pressing plate and the outer wall of the box body for the installation plate of the heat dissipation part to be inserted.
6. According to the fully-immersed evaporative cooling transformer heat dissipation structure, the mounting plate is provided with the plurality of nut half holes matched with the corresponding nuts in shape, so that the nuts welded on the outer wall of the box body have a certain limiting effect on the mounting plate and are assembled more firmly, and the parts of the outer wall of the box body except the nuts are attached to the mounting plate, so that the contact area between the outer wall of the box body and a heat dissipation piece is increased, and quick heat dissipation is facilitated.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.
FIG. 1 is a perspective view of a heat dissipation structure of a fully-immersed evaporative cooling transformer of the present invention;
FIG. 2 is a top view of FIG. 1;
FIG. 3 is a front view of FIG. 1;
FIG. 4 is an assembled perspective view of the elastic platen assembly and two heat sinks;
FIG. 5 is a right side view of FIG. 4;
FIG. 6 is a top view of FIG. 4;
fig. 7 is a partially enlarged schematic view of fig. 6.
Description of reference numerals: 1. a box body; 2. a heat sink; 21. mounting a plate; 22. a heat dissipation plate; 3. an elastic pressure plate; 30. chamfering; 31. a first perforation; 32. a second perforation; 4. a bolt; 5. and a nut.
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
In addition, the technical features involved in the different embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.
Examples
The present embodiment provides a heat dissipation structure of a fully-immersed evaporative cooling transformer, as shown in fig. 1 to 3, including a box 1, an elastic pressing plate assembly and a heat dissipation member 2.
The cross section of the box body 1 is triangular.
The elastic pressing plate assemblies are provided with a plurality of groups, and are detachably distributed on the outer wall of the box body 1 at intervals. The resilient platen assembly includes a resilient platen 3 and a plurality of fastening assemblies.
The elastic pressing plate 3, as shown in fig. 6 and 7, is provided with a chamfer 30 at the front end along the insertion direction of the mounting plate 21, and the cross section of the elastic pressing plate 3 is a rectangular frame, so that the elastic pressing plate has certain elasticity. The side of the elastic pressing plate 3 facing the outer wall of the box body 1 is formed with a second through hole 32, and the other side is formed with a first through hole 31. In this embodiment, the elastic pressing plate 3 is a metal frame, such as iron, steel, aluminum alloy, or the like.
And the fastening components are arranged at intervals along the length direction of the elastic pressing plate 3 (namely the height direction of the outer wall of the transformer box body 1) and are suitable for assembling the elastic pressing plate 3 with the box body 1. As shown in fig. 6 and 7, the fastening assembly includes a bolt 4 and a nut 5, a head of one side of the bolt 4 abuts against the elastic pressing plate 3, and a screw of the other side of the bolt passes through the first through hole 31 of the elastic pressing plate 3 and then is in threaded connection with the nut 5. In this embodiment, the nut 5 is welded to the outer wall of the box body 1, the shape of the second through hole 32 is matched with that of the nut 5, and the thickness of the elastic pressing plate 3 is greater than that of the nut 5.
A plurality of radiating pieces 2, as shown in fig. 4-7, have integrative bending connection, be the mounting panel 21 and the heating panel 22 of L shape, mounting panel 21 is suitable for insert to the elastic pressure plate subassembly with between the box 1 outer wall, and under the elastic force of elastic pressure plate subassembly with the assembly of box 1, the shaping has a plurality ofly and corresponds on the mounting panel 21 the nut half-hole of 5 appearance adaptations of nut, heating panel 22 orientation the box 1 extends outward. The number of the heat dissipation elements 2 is two, and the mounting plates 21 of the two heat dissipation elements 2 are inserted from two sides of the elastic pressing plate component in the width direction correspondingly. In this embodiment, the heat sink 2 is made of an aluminum material, and may be solid or hollow, and a phase change material or water is encapsulated therein, and the phase change material may be fluorocarbon or other evaporative cooling media.
As an alternative embodiment, the mounting plate 21 may also be adhered to the outer wall of the box 1 by a metal adhesive.
As a convertible embodiment, the shape of the case 1 may be a cylinder, an equilateral polygon or a scalene polygon, and the transformer core structure may be a planar laminated core, a three-dimensional wound core, or the like.
In this embodiment, the transformer may be a single-phase transformer or a three-phase transformer.
The invention provides a heat dissipation structure of a full-immersion evaporative cooling transformer, which comprises a box body 1, an elastic pressure plate assembly and a heat dissipation part 2, wherein during assembly, the elastic pressure plate assembly is fixedly arranged on the outer wall 1 of the box body, then an installation plate 21 of the heat dissipation part 2 is inserted between the elastic pressure plate assembly and the outer wall of the box body 1 from one side, and the installation plate 21 is assembled with the box body 1 under the elastic acting force of the elastic pressure plate assembly; in addition, the elastic pressing plate assembly, the heat radiating piece 2 and the transformer box body 1 can be packaged and transported separately, so that the occupied space is small, and the transportation cost is reduced.
It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications therefrom are within the scope of the invention.