Heat dissipation type dry-type transformer iron core

Abstract

The utility model belongs to the technical field of transformer iron cores, and particularly relates to a heat dissipation type dry-type transformer iron core which comprises a core column and an iron yoke, a winding is sleeved outside the core column, and the key point is that the heat dissipation type dry-type transformer iron core further comprises supporting strips arranged between the core column and the winding; the heat dissipation system comprises a first liquid conveying pipe, a heat conduction pipe, a second liquid conveying pipe, a metal heat dissipation pipe and a pump which are circularly communicated, and the heat conduction pipe is connected into the supporting strip; the heat conduction pipes are arranged in the supporting strips, heat exchange is carried out between heat and the heat conduction pipes, cooling water or cooling oil is added into the heat conduction pipes, the cooling oil absorbs heat and then circulates into the metal heat dissipation pipes through a pump to carry out heat exchange with outside air, and the cooling oil enters circulation again to directly cool the interior of the iron core after being cooled. According to the structure of the scheme, a heating source, namely a heat concentration position, can be directly and effectively cooled, heat of the iron core is effectively dissipated, and the heat dissipation efficiency is high.

Description

Technical Field

[0001] The utility model belongs to the technical field of transformer cores, and in particular relates to a heat dissipation dry-type transformer core. Background Art

[0002] Dry-type transformers refer to transformers whose cores and windings are not immersed in insulating oil. They are safe, fireproof, pollution-free, have high mechanical strength, and are strong in short-circuit resistance. The cooling methods are divided into natural air cooling and forced air cooling. At present, most dry-type transformer cores are directly blown from the outside, and it is difficult to directly dissipate heat inside the core with laminated silicon steel sheets. This makes it difficult to effectively dissipate heat in the most seriously heated parts of the core; the heat accumulation inside the core may cause damage to the insulation layer on the outer surface of the silicon steel sheet, and may even cause dangerous phenomena such as short circuits;

[0003] Therefore, there is a need for a heat dissipation dry-type transformer core that can quickly dissipate heat inside the core. Utility Model Content

[0004] In view of the problem that the heat dissipation effect of dry-type transformers in the prior art is not good enough, the utility model provides a heat dissipation dry-type transformer core, which adopts heat conduction pipes directly arranged inside the support bars, so as to penetrate into the parts of the core where heat is seriously generated to effectively cool and dissipate heat, thereby ensuring the normal operation of the transformer.

[0005] In order to solve the above technical problems, the technical solution adopted by the utility model is: a heat dissipation dry-type transformer core, including a core column and an iron yoke, a winding is set outside the core column, and the key is: it also includes

[0006] A stay bar, disposed between the core and the winding;

[0007] The heat dissipation system comprises a first liquid infusion pipe, a heat conduction pipe, a second liquid infusion pipe, a metal heat dissipation pipe and a pump which are circulated and connected, wherein the heat conduction pipe is connected inside the stay;

[0008] The first infusion tube (501) and the second infusion tube (503) are both rubber hoses, and the outer surfaces are wrapped with reflective materials.

[0009] The heat-conducting pipe is connected in the support bar and inserted between the winding and the core column. It absorbs heat from the position with severe heat generation, thereby reducing the temperature around the core column and accelerating the heat dissipation efficiency at the core column. Cooling oil or cooling water is used to circulate and absorb heat to achieve the effect of continuous heat dissipation. The cooling oil or cooling water that absorbs heat flows to the metal heat dissipation pipe through the second infusion pipe for heat dissipation, and then is sucked into the first infusion pipe by a pump and flows to the heat-conducting pipe for circulation. The first infusion pipe and the second infusion pipe are made of rubber hose material, which can increase elasticity and facilitate adjustment of shape and occupied space. The outer surface is wrapped with reflective material to reduce the phenomenon of temperature rise due to external sunlight.

[0010] Preferably, the heat dissipation system further comprises a fan, and the fan blows air toward the metal heat dissipation pipe.

[0011] The fan blows air to the metal heat dissipation pipe, which can speed up the heat exchange efficiency between the outside air and the metal heat dissipation pipe, and at the same time speed up the heat dissipation efficiency of the cooling oil or cooling water in the metal heat dissipation pipe.

[0012] Preferably, the number of the metal heat dissipation pipes is 1 to 5. Increasing the number of the metal heat dissipation pipes can increase the contact area with the cold air and improve the heat dissipation efficiency.

[0013] Preferably, the number of the metal heat dissipation pipes is 3-5.

[0014] Preferably, the heat conducting pipe is U-shaped.

[0015] The U-shaped heat pipe can increase the contact area between the heat pipe and the hot air, thereby accelerating the heat exchange efficiency.

[0016] Preferably, the core column, iron yoke and winding are all fixed by means of clamps, the clamps include an upper clamp and a lower clamp, the pump is fixedly mounted on the lower clamp; an extension plate extending outward is fixed on the upper clamp, and a fan is fixedly mounted below the extension plate.

[0017] The pump is fixed on the lower clamp for easy maintenance, and the fan is fixedly installed under the extension plate, which makes it convenient for the fan to blow air to the metal heat dissipation pipe.

[0018] Preferably, 1 to 3 fans are provided.

[0019] The extension plate is a length-adjustable structure.

[0020] The beneficial effects of the utility model are as follows: the core column of the stacked silicon steel sheets generates heat which accumulates in the space surrounded by the winding, the support bar is installed between the winding and the core, and in this solution, a heat pipe is arranged in the support bar, and heat is exchanged with the heat pipe. Cooling water or cooling oil is installed in the heat pipe, and after the cooling oil absorbs the heat, it is circulated to the metal heat dissipation pipe with the help of a pump to exchange heat with the outside air, and then re-enters the circulation after cooling to directly cool the inside of the core. The structure of this solution can directly and effectively cool the heat source, that is, the location where heat is concentrated, effectively dissipate the heat from the core, and the heat dissipation efficiency is high. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic structural diagram of the heat dissipation dry-type transformer core in the embodiment;

[0022] Figure 2 It is a structural schematic diagram of another angle of the heat dissipation dry-type transformer core in the embodiment;

[0023] Figure 3It is a schematic diagram of the exploded structure of the heat dissipation dry-type transformer core in the embodiment;

[0024] Figure 4 It is a structural schematic diagram of the heat dissipation system in the iron core of the heat dissipation dry-type transformer in the embodiment;

[0025] Figure 5 It is a schematic structural diagram of another angle of the heat dissipation system in the iron core of the heat dissipation dry-type transformer in the embodiment;

[0026] In the figure: 1 represents the core column; 2 represents the iron yoke; 3 represents the winding; 4 represents the support bar; 5 represents the heat dissipation system; 501 represents the first infusion pipe; 502 represents the heat conduction pipe; 503 represents the second infusion pipe; 504 represents the metal heat dissipation pipe; 505 represents the pump; 506 represents the fan; 6 represents the clamp; 601 represents the upper clamp; 602 represents the lower clamp; 603 represents the extension plate. DETAILED DESCRIPTION

[0027] In order to make the purpose, technical solution and advantages of the utility model clearer, the utility model is further described in detail below in combination with specific implementation methods and with reference to the accompanying drawings. It should be understood that these descriptions are only exemplary and are not intended to limit the scope of the utility model. In addition, in the following description, the description of well-known structures and technologies is omitted to avoid unnecessary confusion of the concept of the utility model.

[0028] Specific implementation examples Figure 1 , 2 As shown in , 3, 4 and 5, the heat dissipation dry-type transformer core includes a core column 1 and an iron yoke 2, and a winding 3 is set outside the core column 1. The key is: it also includes

[0029] The stay 4 is arranged between the core 1 and the winding 3;

[0030] The heat dissipation system 5 includes a first liquid infusion pipe 501 , a heat conduction pipe 502 , a second liquid infusion pipe 503 , a metal heat dissipation pipe 504 and a pump 505 , which are cyclically connected. The heat conduction pipe 502 is connected inside the support bar 4 .

[0031] like Figure 1 , 2 As shown in , 3, 4 and 5, the heat dissipation system 5 also includes a fan 506, and the fan 506 blows air toward the metal heat dissipation pipe 504.

[0032] like Figure 1 , 2 As shown in , 3, 4 and 5, the number of the metal heat dissipation pipes 504 is 1 to 5.

[0033] like Figure 1 , 2 As shown in Figures 3, 4 and 5, the number of the metal heat dissipation pipes 504 is 3 to 5.

[0034] like Figure 4 and 5 As shown, the heat pipe 502 is U-shaped.

[0035] For easy installation, the first infusion tube 501 and the second infusion tube 503 are both rubber hoses, and the outer surfaces are wrapped with reflective materials.

[0036] like Figure 1 , 2 As shown in Figures 3, 4 and 5, the core column 1, the iron yoke 2 and the winding 3 are all fixed by means of a clamp 6, and the clamp 6 includes an upper clamp 601 and a lower clamp 602. The pump 505 is fixedly mounted on the lower clamp 602; an extension plate 603 extending outward is fixed on the upper clamp 601, and a fan 506 is fixedly mounted below the extension plate 603.

[0037] like Figure 1 , 2 As shown in Figure 3, the number of fans 506 is 1 to 3.

[0038] In order to facilitate the adjustment of the position, the extension plate 603 is a length-adjustable structure. The extension plate 603 can be connected by a plurality of connecting plate threads or a telescopic structure.

[0039] Working principle: connect and fix the heat pipe 502 to the support bar 4, and seal and connect one end of the heat pipe 502 to the first infusion pipe 501, and the other end to the second infusion pipe 503; seal and connect the first infusion pipe 501 to the water outlet of the pump 505, seal and connect the second infusion pipe 503 to the metal heat dissipation pipe 504, seal and connect the water outlet of the metal heat dissipation pipe 504 to the water inlet of the pump 505, and test the sealing of the pipeline; after the test is correct, install and fix the core column 1 and the iron yoke 2 obtained by stacking silicon steel sheets, install the winding 3 and install the support bar 4 with the heat pipe 502; adjust the extension plate 603 to a suitable position so that it does not contact the winding 3, and align the fan 506 with the metal heat dissipation pipe 504 to blow air, install a switch, and start the fan 506 and the pump 505 when the transformer is running.

[0040] It should be understood that the above specific embodiments of the present invention are only used to illustrate or explain the principles of the present invention, and do not constitute a limitation on the present invention. Therefore, any modifications, equivalent substitutions, improvements, etc. made without departing from the spirit and scope of the present invention should be included in the protection scope of the present invention. In addition, the claims attached to the present invention are intended to cover all changes and modifications that fall within the scope and boundaries of the attached claims, or the equivalent forms of such scope and boundaries.

Claims

1. A heat dissipation dry-type transformer core, comprising a core column (1) and an iron yoke (2), wherein a winding (3) is sheathed outside the core column (1), and characterized in that: Also includes A stay (4) is arranged between the core (1) and the winding (3); A heat dissipation system (5) comprising a first liquid infusion pipe (501), a heat conduction pipe (502), a second liquid infusion pipe (503), a metal heat dissipation pipe (504) and a pump (505) which are cyclically connected, wherein the heat conduction pipe (502) is connected inside the support bar (4); The first infusion tube (501) and the second infusion tube (503) are both rubber hoses, and the outer surfaces are wrapped with reflective materials.

2. The heat dissipation dry-type transformer core according to claim 1, characterized in that: The heat dissipation system (5) further comprises a fan (506), wherein the fan (506) blows air towards the metal heat dissipation pipe (504).

3. The heat dissipation dry-type transformer core according to claim 2, characterized in that: The number of the metal heat dissipation pipes (504) is 1 to 5.

4. The heat dissipation dry-type transformer core according to claim 3, characterized in that: The number of the metal heat dissipation pipes (504) is 3-5.

5. The heat dissipation dry-type transformer core according to claim 1, characterized in that: The heat conducting pipe (502) is U-shaped.

6. The heat dissipation dry-type transformer core according to claim 2, characterized in that: The core column (1), the iron yoke (2) and the winding (3) are all fixed by means of a clamp (6), the clamp (6) comprising an upper clamp (601) and a lower clamp (602), the pump (505) being fixedly mounted on the lower clamp (602); an extension plate (603) extending outward is fixedly mounted on the upper clamp (601), and a fan (506) is fixedly mounted below the extension plate (603).

7. The heat dissipation dry-type transformer core according to claim 6, characterized in that: The number of fans (506) is 1 to 3.

8. The heat dissipation dry-type transformer core according to claim 6, characterized in that: The extension plate (603) is a length-adjustable structure.

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