Liquid stagnation prevention type heat dissipation assembly and transformer

Abstract

The utility model relates to the technical field of transformers, in particular to a liquid stagnation prevention type heat dissipation assembly and a transformer. The utility model provides a liquid stagnation prevention type heat dissipation assembly which comprises two hopper bodies and pipe bodies, the two hopper bodies are symmetrically arranged on the side portion of an oil tank of a transformer and connected with the oil tank through flanges, and the multiple pipe bodies which are used for communicating the hopper bodies and are vertically arranged to achieve circulating flowing of insulating oil are evenly arranged between the hopper bodies at intervals. The side part of the pipe body is also provided with a clamping piece for clamping and fixing; due to the fact that the anti-liquid-stagnation type heat dissipation assembly is designed for the transformer, the anti-blocking heat dissipation flowing operation of insulating oil can be achieved through the multiple pipe bodies of the heat dissipation assembly, the anti-falling fixing operation of the multiple pipe bodies can be achieved through the clamping pieces of the heat dissipation assembly, and the problem that in the prior art, due to the fact that gaps of transformer heat dissipation fins are small, the heat dissipation effect is poor is solved. And due to a lamellar structure with a relatively large heat dissipation area, the problem of unsmooth oil flow caused by blockage of impurities is easily caused.

Description

Technical Field

[0001] This application relates to the technical field of transformers, and particularly to an anti-liquid-stagnation type heat dissipation component and a transformer. Background Art

[0002] Traditional transformer heat sinks are usually designed with a thin sheet structure. Although this structure has a large heat dissipation area, in actual use, since the insulating oil inside the fuel tank may contain impurities, these impurities are likely to block the heat sink, especially when the gap between the heat sinks is small, the blockage problem is particularly serious; once blockage occurs, the oil cannot flow smoothly, resulting in a significant decrease in heat dissipation efficiency and affecting the normal operation and service life of the transformer. Summary of the Utility Model

[0003] The problem to be solved by this application is that the existing transformer heat sink, due to its thin sheet structure with a small gap and a large heat dissipation area, is prone to impurity blockage, resulting in poor oil flow and a significant decrease in heat dissipation efficiency.

[0004] To solve the above technical problem, this application provides an anti-liquid-stagnation type heat dissipation component, including a hopper body and a pipe body. The number of hopper bodies is two, symmetrically arranged on the side of the fuel tank of the transformer and connected to the fuel tank through a flange. A plurality of pipe bodies for connecting the two and arranged vertically are evenly and spaced between the hopper bodies to realize the circulating flow of the insulating oil. A clamping member for clamping and fixing is also arranged on the side of the pipe body.

[0005] Since the transformer of this application is designed with an anti-liquid-stagnation type heat dissipation component, it can not only realize the anti-blocking heat dissipation flow operation of the insulating oil through the multiple pipe bodies of the heat dissipation component, but also realize the anti-falling fixing operation of the multiple pipe bodies through the clamping members of the heat dissipation component, solving the problem that the existing transformer heat sink, due to its thin sheet structure with a small gap and a large heat dissipation area, is prone to impurity blockage, resulting in poor oil flow and a significant decrease in heat dissipation efficiency. Description of the Drawings

[0006] Figure 1 Schematic three-dimensional structure diagram of the embodiment.

[0007] Figure 2 Schematic front view structure diagram of the embodiment.

[0008] Figure 3 Schematic side view structure diagram of the embodiment.

[0009] Figure 4 Schematic structure diagram of the hopper body and the pipe body.

[0010] Figure 5 Schematic structure diagram of the clamping member.

[0011] In the figure: 1. Tank cover; 2. Heat dissipation component; 3. Support feet; 4. Oil tank; 5. Hopper body; 6. Pipe body; 7. Clamping piece; 8. Long rod; 9. Short rod; 10. Clamping plate. Specific implementation mode

[0012] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present application without creative efforts shall fall within the protection scope of the present application. Embodiment

[0013] The present application relates to an anti-stagnant liquid heat dissipation component and a transformer, as Figures 1-5 shown, the transformer includes an oil tank 4 filled with insulating oil. Support feet 3 for support are symmetrically arranged at the bottom of the oil tank 4. A tank cover 1 with high and low voltage terminals is arranged at the top of the oil tank 4. Windings connected to the high and low voltage terminals and an iron core for electromagnetic conversion operation are arranged inside the oil tank 4. Since a large amount of heat will be generated when the iron core performs electromagnetic conversion, and the heat will be absorbed by the insulating oil. Since the volume of the insulating oil will expand after absorbing heat, it will affect the sealed transformer oil tank 4. Therefore, a plurality of groups of heat dissipation components 2 for external circulation of oil and natural air cooling operation are symmetrically arranged on both sides of the oil tank 4.

[0014] The heat dissipation component 2 includes a hopper body 5, a pipe body 6, and a clamping piece 7. The number of hopper bodies 5 is two, which are symmetrically arranged on the side of the oil tank 4 and connected to it through a flange. A plurality of pipe bodies 6 for connecting the two to realize the circulating flow of insulating oil are evenly and spaced between the hopper bodies 5. In order to reduce the probability of blockage of the pipe body 6, the cross-sectional shape of the pipe body 6 is elliptical, and the ratio of the major axis to the minor axis is 3.5 - 3.8:1. In order to realize the full heat dissipation of the insulating oil, the pipe body 6 is arranged vertically, and the ratio of the length of the pipe body 6 to the height of the oil tank 4 is 1:1.25 - 1.50. Thus, after the insulating oil enters the pipe body 6, its elliptical vertical structure not only facilitates the flow of the insulating oil, but also has a long enough stroke for the insulating oil to exchange heat with the outside air. Since the number of pipe bodies 6 is large, in order to improve the stability of the heat dissipation component 2 during heat dissipation, a clamping piece 7 for connecting and fixing the pipe body 6 is added between a plurality of heat dissipation components 2.

[0015] The clamping part 7 includes clamping plates 10 and tie rods. The number of clamping plates 10 is two, which are symmetrically arranged on both sides of the tube bodies 6 of multiple heat dissipation components 2. In order to effectively fix the clamping plates 10, therefore, a plurality of tie rods connected thereto are evenly and spacedly arranged on the upper part of the clamping plates 10. The tie rods are divided into two groups. One group is long rods 8, and the other group is short rods 9. The long rods 8 are symmetrically arranged at both ends of the clamping plates 10 and are connected to the outer wall of the fuel tank 4. The short rods 9 are symmetrically arranged between the clamping plates 10 on one side of the long rods 8. The upper part of the tie rods is locked by nuts connected by threads to realize the locking operation of the clamping plates 10, so as to use the clamping plates 10 to perform a linkage support and limit operation on the tube bodies 6 of multiple heat dissipation components 2, and slow down the downward deformation or accidental detachment of the tube bodies 6 under the action of the gravity of the insulating oil.

[0016] During use, after the transformer generates heat absorbed by the insulating oil during operation, the insulating oil will then flow into the inner part of the bucket body 5 at the upper part along the upper half of the fuel tank 4, and then be distributed into multiple vertically arranged tube bodies 6. Then, heat exchange is realized between the inner wall of the tube body 6 and the outside air. Since the insulating oil mainly uses mineral oil, there will be a certain amount of impurities in it or in the fuel tank 4. Especially after the iron core operates for a long time, it will cause high-temperature heat loss in components such as windings, and some impurities mixed into the insulating oil will fall off. Therefore, it is easy to cause blockage of the tube body 6 during the heat dissipation cycle. Therefore, by designing the cross-section of the tube body 6 to be oval and setting a suitable ratio between the major axis and the minor axis, the blockage probability of the tube body 6 is slowed down. Further, by increasing the number of tube bodies 6, so that when some tube bodies 6 are blocked, there are still other tube bodies 6 that can realize the normal heat dissipation operation of the insulating oil. Compared with the traditional plate-shaped heat sink, once it is blocked, the heat dissipation capacity will be greatly reduced, and the plate-shaped heat sink is usually an integral structure. When part of it is blocked, the heat sinks on the entire side of the fuel tank 4 need to be replaced. In this application, the heat dissipation components 2 are designed into multiple groups, and each group of heat dissipation components 2 has multiple heat dissipation tube bodies 6, so that the replacement cost can be reduced by only replacing a single heat dissipation component 2.

[0017] Generally speaking, terms should be understood at least in part by their use in context. For example, at least in part depending on the context, the term "one or more" used in the text can be used to describe any feature, structure or property in the singular sense, or can be used to describe a combination of features, structures or properties in the plural sense. Similarly, at least in part depending on the context, terms such as "a" or "the" can also be understood as conveying singular usage or conveying plural usage.

[0018] It should be readily understood that the terms "on", "above", and "over" in this disclosure should be interpreted in the broadest manner such that "on" not only means "directly on something", but also includes the meaning of "on something" with intervening features or layers therebetween, and "above" or "over" not only includes the meaning of "above" or "over something", but may also include the meaning of "above" or "over something" with no intervening features or layers therebetween (i.e., directly on something).

[0019] In addition, spatial relative terms may be used in this document for convenience of description, such as "below", "beneath", "under", "above", "over", etc., to describe the relationship of one element or feature to another as shown in the figures. Spatial relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation shown in the figures. The device may have other orientations (rotated 90 degrees or at other orientations), and the spatial relative descriptors used herein may be interpreted accordingly as well.

[0020] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application and are not intended to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements on some or all of the technical features; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. An anti-stagnation type heat dissipation component, characterized in that: It includes a bucket body and a tube body. There are two bucket bodies, which are symmetrically arranged on the side of the transformer oil tank and connected to the oil tank through a flange. A plurality of tube bodies are evenly and spacedly arranged between the bucket bodies for connecting the two and arranged vertically to realize the circulation of insulating oil. The sides of the tube bodies are also arranged with clamps for clamping and fixing.

2. The heat dissipation assembly according to claim 1, characterized in that: The clamp comprises a clamping plate and a pull rod. There are two clamping plates, which are symmetrically arranged on both sides of a plurality of tube bodies. A plurality of pull rods connected to the clamping plates are evenly and spacedly arranged on the upper part of the clamping plates.

3. The heat dissipation assembly according to claim 2, characterized in that: The pull rod is divided into a long rod and a short rod. The long rod is symmetrically arranged at both ends of the clamping plate and connected to the outer wall of the fuel tank. The short rod is symmetrically arranged between the clamping plates on one side of the long rod. The pull rod realizes the locking operation of the clamping plate through a threaded nut.

4. The heat dissipation assembly according to claim 1, characterized in that: The cross-sectional shape of the tube body is elliptical.

5. The heat dissipation assembly according to claim 4, characterized in that: The ratio between the long axis and the end axis of the tube body is 3.5 to 3.8:

1.

6. The heat dissipation assembly according to claim 1, characterized in that: The ratio between the pipe length and the fuel tank height is 1:1.25~1.

50.

7. A transformer, comprising the heat dissipation assembly according to any one of claims 1 to 6, characterized in that: The utility model also comprises an oil tank filled with insulating oil, and the bottom of the oil tank is symmetrically arranged with supporting legs.

8. The transformer according to claim 7, characterized in that: There are multiple heat dissipation components, which are symmetrically arranged on both sides of the oil tank.

9. The transformer according to claim 7, characterized in that: A tank cover with high and low voltage terminals is arranged on the top of the oil tank.

10. The transformer according to claim 7, characterized in that: The inside of the oil tank is arranged with windings connected to the high and low voltage terminals and an iron core for performing electromagnetic conversion operations.

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