A heat-dissipating center-elevated finned radiator for a transformer

Abstract

The utility model relates to a radiator technical field proposes a kind of sheet type radiator with heat dissipation center elevation for transformer, including fin group;Upper oil collecting pipe fitting is arranged at the top end of fin group, and upper oil collecting pipe fitting includes upper short pipe, and upper short pipe one end intercommunication fin assembly, and other end intercommunication transformer box;Lower oil collecting pipe fitting is arranged at the bottom end of fin group, and lower oil collecting pipe fitting includes lower short pipe, lower standpipe and lower long pipe, and lower long pipe is arranged at the bottom end of fin group and intercommunication fin group, and lower standpipe one end intercommunication lower long pipe, and other end intercommunication lower short pipe, and lower short pipe intercommunication transformer box;Wherein, the vertical distance of the axis of lower short pipe to fin group center is greater than the vertical distance of the axis of lower long pipe to fin group center. Through the above technical scheme, the problem that the heat exchange efficiency is low due to the low heat dissipation center of the existing sheet type radiator when installed on the transformer is solved.

Description

Technical Field

[0001] This utility model relates to the field of radiator technology, specifically to a plate-type radiator for transformers with an elevated heat dissipation center. Background Technology

[0002] With the booming development of my country's power industry, the manufacturing technology requirements for large transformers, as one of the key power equipment, are also increasing. To ensure the overall structural stability and seismic resistance of the transformer, it is necessary to lower the center of gravity of the transformer body. Correspondingly, the height of various interfaces on the transformer tank will also be reduced, including the interface flanges connecting to the plate radiators.

[0003] When a conventional finned radiator is connected to the oil tank interface flange, the radiator's heat dissipation center height decreases synchronously with the flange height. Under natural convection conditions, this decrease in heat dissipation center height leads to a reduction in the heat exchange efficiency between the air and the transformer oil. To maintain a constant total heat dissipation, the number of fins needs to be increased, which undoubtedly raises the radiator's manufacturing cost.

[0004] Therefore, in order to ensure that the heat dissipation effect of the plate radiator is not affected when the height of the transformer tank flange interface is reduced, there is an urgent need for a new type of plate radiator with an increased heat dissipation center height. Utility Model Content

[0005] This invention proposes a plate-type radiator with an elevated heat dissipation center for transformers, which solves the problem of low heat exchange efficiency caused by the low heat dissipation center of existing plate-type radiators when installed on transformers.

[0006] The technical solution of this utility model is as follows: A plate-type heat sink with an elevated heat dissipation center for transformers, comprising: Heat sink assembly; An upper oil collecting pipe is installed at the top of the heat sink assembly. The upper oil collecting pipe includes an upper short pipe, one end of which is connected to the heat sink assembly, and the other end is connected to the transformer housing. The lower oil collecting pipe is located at the bottom end of the heat sink assembly. The lower oil collecting pipe includes a lower short pipe, a lower vertical pipe, and a lower long pipe. The lower long pipe is located at the bottom end of the heat sink assembly and is connected to the heat sink assembly. One end of the lower vertical pipe is connected to the lower long pipe, and the other end is connected to the lower short pipe. The lower short pipe is connected to the transformer housing. The vertical distance from the axis of the lower short tube to the center of the heat sink assembly is greater than the vertical distance from the axis of the lower long tube to the center of the heat sink assembly.

[0007] With the above technical solution, the vertical distance from the axis of the lower short pipe to the center of the heat sink assembly is greater than the vertical distance from the axis of the lower long pipe to the center of the heat sink assembly. When both the lower and upper short pipes are connected to the transformer tank, and the lower short pipe is connected to the interior of the heat sink assembly through the lower vertical pipe and the lower long pipe, the center of the heat sink assembly is raised in height compared to the conventional connection method. The gravity driving force of the cold oil return will increase, which is conducive to the rapid cooling of the high-temperature oil in the heat sink assembly, shortening the heat exchange time between the transformer and the radiator.

[0008] As a further technical solution, the axis of the lower short tube is parallel to the axis of the lower long tube.

[0009] With the above technical solution, since the lower short pipe is connected to the transformer tank and the lower long pipe is connected to the heat sink assembly, when the axis of the lower short pipe is parallel to the axis of the lower long pipe, the resistance of oil flowing from the transformer into the heat sink assembly can be reduced.

[0010] As a further technical solution, the axis of the lower vertical tube is perpendicular to the axis of the lower short tube.

[0011] Through the above technical solution, in order to simplify the overall structure and facilitate manufacturing, the axis of the lower vertical tube is set perpendicular to the axis of the lower short tube.

[0012] As a further technical solution, the lower oil gathering pipe fitting also includes a lower reinforcing plate, one end of which is connected to the lower long pipe and the other end of which is connected to the lower vertical pipe. The lower reinforcing plate, the lower long pipe, and the lower vertical pipe form a triangular reinforcement structure.

[0013] With the above technical solution, since the lower short pipe is connected to the heat sink assembly by means of the lower vertical pipe and the lower long pipe, in order to improve the connection strength between the lower oil collection pipe and the heat sink assembly, a lower reinforcing plate is set between the lower vertical pipe and the lower long pipe.

[0014] As a further technical solution, the axis of the upper short tube is parallel to the axis of the lower short tube.

[0015] Through the above technical solution, in order to allow the oil to smoothly enter and exit the radiator, the axis of the upper short pipe and the axis of the lower short pipe are set to be parallel.

[0016] As a further technical solution, the upper oil collecting pipe also includes an upper long pipe and an upper vertical pipe. The upper long pipe is connected to the top of the heat sink assembly and communicates with the interior of the heat sink assembly. One end of the upper vertical pipe is connected to the upper long pipe, and the other end is connected to the upper short pipe.

[0017] In order to reduce manufacturing difficulty and facilitate the flow of oil in the transformer, thereby further enhancing the driving force of cold oil return, the upper oil collecting pipe also includes an upper long pipe and an upper vertical pipe. The upper vertical pipe is also connected between the upper short pipe and the upper long pipe. The symmetrical structure facilitates maintenance, installation, design and strength verification.

[0018] As a further technical solution, the upper oil collecting pipe fitting also includes an upper reinforcing plate, one side of which is connected to the heat sink assembly, and the other side is connected to the upper vertical pipe.

[0019] The above technical solution connects the upper reinforcing plate to the heat sink assembly and the upper vertical pipe, which can increase the strength of the upper oil collection pipe and help improve the overall lifespan of the equipment.

[0020] As a further technical solution, the vertical distance from the axis of the upper short pipe to the axis of the lower short pipe is L1, and the vertical distance from the axis of the upper long pipe to the axis of the lower long pipe is L2, where L1 = L2.

[0021] With the above technical solution, when L1=L2, the structure of the upper oil gathering pipe is already similar to that of the lower oil gathering pipe. Even if there are structural improvements, the structure is similar, which reduces the difficulty of design and manufacturing.

[0022] As a further technical solution, the axis of the upper vertical pipe coincides with the axis of the lower vertical pipe.

[0023] With the above technical solution, when the axis of the upper vertical pipe is completely coincident with the axis of the lower vertical pipe, except for the upper and lower reinforcing plates, the other structures of the upper oil collecting pipe fitting are exactly the same as those of the lower oil collecting pipe fitting.

[0024] The plate-type heat sink for transformers with an elevated heat dissipation center provided by this utility model has at least the following effects: I. The plate-type radiator provided by this utility model effectively raises the overall center height of the heat sink assembly through the structural design of the lower oil collection pipe, strengthens the gravity driving force of the cold oil return, thereby improving the heat exchange efficiency and shortening the cooling time.

[0025] Second, the relative arrangement of the upper and lower oil collecting pipes not only improves the overall mechanical strength and stability, but also simplifies the manufacturing and installation process, facilitates maintenance, and is compatible with existing transformer enclosures, allowing for direct installation and use without additional modifications. Attached Figure Description

[0026] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0027] Figure 1A schematic diagram of the overall structure of a plate-type heat sink for transformers with an elevated heat dissipation center, provided by this utility model; Figure 2 for Figure 1 A structural diagram from another angle; Figure 3 for Figure 2 The right view.

[0028] In the diagram: 1. Heat sink assembly; 2. Upper short tube; 3. Upper vertical tube; 4. Upper long tube; 5. Upper reinforcing plate; 6. Lower short tube; 7. Lower vertical tube; 8. Lower long tube; 9. Lower reinforcing plate. Detailed Implementation

[0029] The technical solutions of this utility model will be clearly and completely described below with reference to the embodiments of this utility model. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this utility model.

[0030] The following is based on Figures 1-3 The plate-type heat sink provided by this utility model will be described in detail.

[0031] This application provides a plate-type radiator with an elevated heat dissipation center for transformers, including a heat dissipation fin assembly 1, an upper oil collecting pipe fitting, and a lower oil collecting pipe fitting. It is mainly used for heat dissipation of transformers and can be installed and matched without any changes to existing transformers.

[0032] The heat sink assembly 1 consists of multiple heat sinks and is a common structure.

[0033] See Figures 1-3 The upper oil collecting pipe fitting includes an upper short pipe 2, an upper vertical pipe 3, an upper long pipe 4, and an upper reinforcing plate 5. The upper long pipe 4 is welded to the top of the heat sink assembly 1, and a first connecting hole is provided at a corresponding position on the upper long pipe 4, maintaining communication between the upper long pipe 4 and the heat sink assembly 1 via the first connecting hole. The top end of the upper vertical pipe 3 is connected to the end of the upper long pipe 4, and the upper short pipe 2 is connected to the bottom end of the upper vertical pipe 3, which is also connected to the transformer housing. The upper reinforcing plate 5 is connected to the upper vertical pipe 3 and the heat sink assembly 1 to improve the overall structural strength of the upper oil collecting pipe fitting.

[0034] See Figures 1-3The lower oil collecting pipe fitting includes a lower short pipe 6, a lower vertical pipe 7, a lower long pipe 8, and a lower reinforcing plate 9. The lower long pipe 8 is welded to the bottom of the heat sink assembly 1, and a second connecting hole is provided at a corresponding position on the lower long pipe 8, allowing it to maintain communication with the heat sink assembly 1. The top end of the lower vertical pipe 7 is connected to the end of the lower long pipe 8, and the lower short pipe 6 is connected to the bottom end of the lower vertical pipe 7, which is located under the transformer housing. The lower reinforcing plate 9 connects the lower vertical pipe 7 and the lower long pipe 8 to improve the overall structural strength of the lower oil collecting pipe fitting.

[0035] When the upper short pipe 2 serves as the oil inlet, the lower short pipe 6 serves as the oil outlet. When both the upper short pipe 2 and the lower short pipe 6 are connected to the transformer tank, since the transformer tank remains unchanged, the plate-type radiator provided by this invention can be connected to the transformer tank just like a conventional radiator. However, due to the installation of the upper vertical pipe 3 and the lower vertical pipe 7, the center of the plate-type radiator provided by this invention is raised compared to a conventional radiator. This facilitates the circulation of the hotter oil between the transformer and the plate-type radiator, strengthens the gravity driving force of the cold oil return, and improves the heat dissipation efficiency.

[0036] To minimize space usage, the axis of the upper short tube 2 is parallel to the axis of the upper long tube 4, and the axis of the upper vertical tube 3 is perpendicular to the axes of both the upper short tube 2 and the upper long tube 4. At this point, the upper vertical tube 3 and the lower vertical tube 7 are located on the same side of the heat sink assembly 1, facing the side of the transformer.

[0037] Both the upper and lower short pipes are equipped with connecting flanges for connecting to the transformer housing.

[0038] The heat sink provided by this utility model has the same heat sink assembly 1, the same inner diameter of the upper short tube 2, and the same inner diameter of the lower short tube 6 as conventional heat sinks. The center position of the heat sink assembly 1 is raised only by means of the upper vertical tube 3, the upper long tube 4, the lower vertical tube 7, and the lower long tube 8.

[0039] Furthermore, in the plate-type radiator provided by this utility model, the inner diameters of the upper short pipe, the upper vertical pipe, and the upper upper pipe in the upper oil collecting pipe fitting are the same; and the inner diameters of the lower short pipe, the lower vertical pipe, and the lower long pipe in the lower oil collecting pipe fitting are the same.

[0040] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A plate-type heat sink with an elevated heat dissipation center for transformers, characterized in that, include: Heat sink assembly (1); An upper oil collecting pipe is installed at the top of the heat sink assembly (1). The upper oil collecting pipe includes an upper short pipe (2). One end of the upper short pipe (2) is connected to the heat sink assembly (1), and the other end is connected to the transformer box. The lower oil collecting pipe is located at the bottom end of the heat sink assembly (1). The lower oil collecting pipe includes a lower short pipe (6), a lower vertical pipe (7), and a lower long pipe (8). The lower long pipe (8) is located at the bottom end of the heat sink assembly (1) and is connected to the heat sink assembly (1). One end of the lower vertical pipe (7) is connected to the lower long pipe (8), and the other end is connected to the lower short pipe (6). The lower short pipe (6) is connected to the transformer housing. The vertical distance from the axis of the lower short tube (6) to the center of the heat sink assembly (1) is greater than the vertical distance from the axis of the lower long tube (8) to the center of the heat sink assembly (1).

2. A heat-dissipating center-elevated finned heat sink for a transformer according to claim 1, characterized in that, The axis of the lower short tube (6) is parallel to the axis of the lower long tube (8).

3. A heat-dissipating center-elevated finned heat sink for a transformer according to claim 2, characterized in that, The axis of the lower vertical tube (7) is perpendicular to the axis of the lower short tube (6).

4. A plate-type heat sink with an elevated heat dissipation center for a transformer according to claim 3, characterized in that, The lower oil collection pipe also includes a lower reinforcing plate (9), one end of which is connected to the lower long pipe (8) and the other end is connected to the lower vertical pipe (7). The lower reinforcing plate (9), the lower long pipe (8) and the lower vertical pipe (7) form a triangular reinforcement structure.

5. A plate-type heat sink for transformers with an elevated heat dissipation center according to any one of claims 1-4, characterized in that, The axis of the upper short tube (2) is parallel to the axis of the lower short tube (6).

6. A plate-type heat sink with an elevated heat dissipation center for a transformer according to claim 5, characterized in that, The upper oil collection pipe also includes an upper long pipe (4) and an upper vertical pipe (3). The upper long pipe (4) is connected to the top of the heat sink assembly (1) and communicates with the interior of the heat sink assembly (1). One end of the upper vertical pipe (3) is connected to the upper long pipe (4), and the other end is connected to the upper short pipe (2).

7. A heat-dissipating center-elevated finned heat sink for a transformer according to claim 6, wherein The upper oil collection pipe also includes an upper reinforcing plate (5), one side of which is connected to the heat sink assembly (1), and the other side is connected to the upper vertical pipe (3).

8. A heat-dissipating center-elevated finned heat sink for a transformer according to claim 7, characterized by The vertical distance from the axis of the upper short tube (2) to the axis of the lower short tube (6) is L1, and the vertical distance from the axis of the upper long tube (4) to the axis of the lower long tube (8) is L2, where L1 = L2.

9. A heat-dissipating center-elevated finned heat sink for a transformer according to claim 8, characterized in that, The axis of the upper vertical tube (3) coincides with the axis of the lower vertical tube (7).

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