Transformer oil tank capable of rapidly dissipating heat

Abstract

The utility model discloses a quick heat dissipation transformer oil tank, which comprises a transformer main body, a radiator group, a cooling coil and a driving assembly, the radiator group is arranged on the surface of the transformer main body, and a plurality of fans are fixedly arranged on the surface of the radiator group; the driving assembly comprises a nozzle body, a pump box and an axial flow paddle, the nozzle body is of a Delaval nozzle structure and comprises a contraction section, a throat part and an expansion section, the pump box is communicated with the interior of the transformer body through a liquid inlet hole, the axial flow paddle is arranged on the inner sides of the nozzle body and the pump box and comprises a liquid inlet paddle disc and an axial flow paddle rod, and the liquid inlet paddle disc is driven by a motor to rotate; and the oil is driven to flow along the surface of the axial flow paddle rod to form high-speed jet flow which is in full contact with the surface of the cooling coil for heat exchange. And through the acceleration effect of the Delaval nozzles and the flow guide effect of the axial flow paddles, the flow speed of the cooling liquid and the heat dissipation efficiency are improved, and the heat dissipation performance and the working stability of the transformer are enhanced.

Description

Technical Field

[0001] This utility model relates to the field of transformer oil tank technology, specifically a transformer oil tank with rapid heat dissipation. Background Technology

[0002] In power systems, transformers, as crucial equipment for electrical energy transmission and conversion, generate significant amounts of heat during long-term operation due to current flow and magnetic flux changes. To ensure stable operation under high load conditions, effective heat dissipation is essential to prevent overheating-induced equipment failure or reduced lifespan. Currently, common transformer cooling methods include natural convection cooling, forced air cooling, and oil immersion cooling. However, existing technologies still have the following shortcomings in terms of heat dissipation performance and stability:

[0003] First, traditional oil-cooled transformers typically employ single-loop or natural convection circulation, resulting in low coolant flow rates during circulation, limited cooling effectiveness, and a tendency for localized overheating, thus affecting the transformer's stable operation. Second, existing heat dissipation systems suffer from poor contact heat exchange between the coolant and heat exchange components, with insufficient flow velocity of the coolant through cooling coils and radiator assemblies, leading to low heat exchange efficiency and inadequate heat dissipation. Furthermore, traditional axial flow propellers or guide mechanisms suffer from structural complexity, high power consumption, and poor fluid guidance when driving coolant flow, further limiting the overall efficiency of the cooling system.

[0004] To address the aforementioned issues, a cooling system is needed that can increase coolant flow rate, enhance heat exchange efficiency, and ensure stable liquid flow path within the system. Specifically, optimizing the coolant flow path and velocity is crucial to improving the contact efficiency between the coolant and the heat exchange surfaces. Combined with a highly efficient air-cooled heat dissipation structure, this will create a continuous and stable heat dissipation effect, thereby maintaining the transformer's stable operating temperature under high load conditions and extending the equipment's service life. Summary of the Invention

[0005] The present invention aims to solve the technical problems existing in the prior art or related technologies.

[0006] This invention provides a transformer oil tank for rapid heat dissipation, the overall structure of which includes a transformer body, a radiator assembly, cooling coils, and a drive assembly. The transformer body is a closed structure, and transformer oil and electrical components are housed inside.

[0007] The radiator assembly is fixedly mounted on the surface of the transformer body. The radiator assembly contains multiple sets of heat dissipation fins and cooling channels. Multiple fans are installed on the surface of the radiator assembly to guide external airflow and enhance heat dissipation. The cooling coil is spirally wound inside the transformer body, forming a stable flow path for the oil.

[0008] The cooling coil and radiator assembly are connected by a circulation pump set to form a closed circulation channel. The circulation pump set includes at least two circulation pumps, which are respectively connected to the cooling coil and the radiator assembly to form a dual-loop cooling structure, allowing the coolant to circulate between the cooling coil and the radiator assembly.

[0009] The drive assembly includes a nozzle body, a pump housing, and an axial flow propeller. The nozzle body adopts a Delaware nozzle structure, including a contraction section, a throat, and an expansion section. The pump housing communicates with the interior of the transformer body through an inlet port. The axial flow propeller is disposed inside the nozzle body and the pump housing. The axial flow propeller includes an inlet propeller disc and an axial flow propeller rod. The inlet propeller disc is driven to rotate by a motor, and the axial flow propeller rod is arranged in a spiral shape to guide the oil to form a stable flow path along the interior of the nozzle body.

[0010] During operation, the coolant circulates between the cooling coil and the radiator assembly under the action of the circulating pump unit. After entering the nozzle body, it forms a high-speed jet through the combined action of the axial flow propeller and the Delaware nozzle structure, which pushes the oil to rise inside the nozzle body, making full contact with the surface of the cooling coil and exchanging heat quickly to form an efficient cooling circuit.

[0011] The beneficial effects achieved by this utility model are as follows:

[0012] 1. In this utility model, a Delaware nozzle structure is adopted, which utilizes the fluid acceleration effect of the contraction section, throat and expansion section to form a high-speed jet of coolant inside the nozzle body, increasing the kinetic energy and flow rate of the liquid, enhancing the contact heat exchange effect between the oil and the surface of the cooling coil, thereby significantly improving the heat dissipation efficiency.

[0013] 2. In this utility model, a dual-loop cooling system is used to ensure that the oil flows continuously and stably in the system by utilizing the closed loop formed between the cooling coil and the radiator group by the circulating pump group. Combined with the forced air cooling effect of the fan, the cooling effect is further accelerated, the transformer maintains a stable operating temperature under high load conditions, and the service life of the equipment is extended. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of one embodiment of the present utility model;

[0015] Figure 2 This is a schematic diagram of the radiator assembly and cooling coil structure according to an embodiment of the present invention;

[0016] Figure 3 This is a schematic diagram of the cooling coil and drive assembly structure according to one embodiment of the present invention;

[0017] Figure 4This is a schematic diagram of the cross-sectional structure of a drive component according to an embodiment of the present invention;

[0018] Figure 5 This is a schematic diagram of an axial flow propeller structure according to an embodiment of the present invention.

[0019] Figure label:

[0020] 100. Transformer oil tank; 200. Radiator assembly; 210. Fan; 220. Circulating pump assembly; 300. Cooling coil;

[0021] 400, Drive assembly; 410, Nozzle body; 420, Pump box; 430, Axial propeller; 431, Inlet propeller disc; 432, Axial propeller rod. Detailed Implementation

[0022] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to specific embodiments and accompanying drawings. It should be noted that, unless otherwise specified, the embodiments and features of the present utility model can be combined with each other.

[0023] It should be understood that these descriptions are merely exemplary and are not intended to limit the scope of this invention.

[0024] The following is in conjunction with the appendix Figures 1-5 This invention describes a transformer oil tank with rapid heat dissipation, provided by some embodiments of the present invention.

[0025] This utility model provides a transformer oil tank with rapid heat dissipation, the overall structure of which includes:

[0026] Transformer body 100, used to house transformer oil and electrical components;

[0027] Radiator assembly 200, used for heat dissipation;

[0028] Cooling coil 300 is used to realize heat exchange between oil and cooling medium;

[0029] The drive assembly 400 is used to drive the transformer oil to form a circulating flow in the cooling coil 300 and the radiator assembly 200.

[0030] 1. Heat dissipation system structure and connection method

[0031] like Figure 1 and Figure 2 As shown, the radiator assembly 200 is fixedly installed on the surface of the transformer body 100, and multiple fans 210 are evenly distributed on the surface of the radiator assembly 200.

[0032] The transformer body 100 is equipped with a cooling coil 300 and a drive assembly 400. The cooling coil 300 is spirally wound inside the transformer body 100 and is connected to the radiator assembly 200 through a circulation pump assembly 220 to form a complete coolant circulation loop.

[0033] The circulating pump group 220 includes at least two circulating pumps, which are respectively connected to the cooling coil 300 and the radiator group 200 to form a dual-loop cooling channel.

[0034] 2. Delaval Nozzle and Drive Structure

[0035] The drive assembly 400 includes a nozzle body 410, a pump box 420, and an axial flow propeller 430.

[0036] Nozzle body 410 adopts a Delaware nozzle structure, including:

[0037] Contraction section: gradually increases the flow velocity of the liquid;

[0038] Throat: Allows the fluid to reach its maximum speed at the throat, creating a sonic or supersonic flow;

[0039] Expansion section: Increases the kinetic energy of the liquid flow through expansion and acceleration.

[0040] The surface of the pump box 420 is provided with multiple liquid inlet holes for introducing transformer oil from the transformer body 100. The axial flow propeller 430 is disposed between the nozzle body 410 and the pump box 420, and includes: a liquid inlet propeller disc 431: which is driven by a motor to rotate and produce a guiding effect; and an axial flow propeller rod 432: which is arranged in a spiral shape to guide the oil to flow along the inside of the nozzle body 410 and form a stable vortex in the nozzle body 410 for axial flow transportation of the liquid.

[0041] Specifically, the fan 210 is an axial flow fan, and multiple fans 210 are arranged in a matrix on the surface of the radiator assembly 200 to enhance the heat dissipation effect. The nozzle body 410 has a tapered-expanding Delaware nozzle structure inside, and the minimum diameter inside the nozzle body 410 is located above the axial flow propeller 430. The surface of the pump box 420 is provided with a liquid inlet hole to form a stable liquid flow when transformer oil passes through the pump box 420. The outer side of the pump box 420 is provided with a high-temperature resistant coating to improve corrosion resistance and heat resistance.

[0042] Working principle and usage process of this utility model:

[0043] Under the action of the circulating pump unit 220, coolant is drawn from the transformer oil tank 100. It circulates through the cooling coil 300 and the radiator assembly 200. Inside the radiator assembly 200, the fan 210 guides the airflow to the radiator surface, thereby achieving rapid cooling.

[0044] The drive assembly 400 includes a nozzle body 410, a pump housing 420, and an axial propeller 430. The nozzle body 410 adopts a Delaware nozzle structure, including a converging section, a throat, and an expanding section.

[0045] The circulating pump set 220 drives the coolant to circulate inside the cooling coil 300 and the radiator set 200. The transformer oil tank 100 enters the nozzle body 410 through the liquid inlet hole on the pump box 420. The axial flow propeller 430 is set inside the nozzle body 410 and the pump box 420, including the liquid inlet propeller disk 431 and the axial flow propeller rod 432. During rotation, the liquid is introduced into the blade surface of the axial flow propeller 430 and flows in the axial direction under the guidance of the axial flow propeller rod 432.

[0046] The accelerated transformer oil rises through the kinetic energy of the Delaware nozzle 410 and quickly comes into contact with the surface of the cooling coil 300.

[0047] On the surface of the cooling coil 300, the high-speed flow and rapid agitation of the liquid allows for sufficient heat exchange with the surface of the cooling coil 300. Furthermore, the cooling effect formed by the combination of the cooling coil 300 and the radiator assembly 200 can remove the heat inside the transformer body 100.

[0048] In the description of this specification, the terms "one embodiment," "some embodiments," "specific embodiment," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0049] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A transformer oil tank with rapid heat dissipation, characterized in that, The utility model relates to a transformer oil tank cooling device which comprises a transformer oil tank (100), a radiator group (200), a cooling coil (300) and a driving assembly (400), characterized in that: The surface of the transformer oil tank (100) is provided with the radiator group (200), a plurality of fans (210) are fixedly installed on the surface of the radiator group (200), and the inside of the transformer oil tank (100) is provided with the cooling coil (300) and the driving assembly (400); The surface of the radiator group (200) is provided with a circulating pump group (220) which communicates with the cooling coil (300) and the radiator group (200) to form a cooling liquid circulation loop; The top end of the driving assembly (400) is arranged opposite to the bottom surface of the cooling coil (300), the driving assembly (400) comprises a nozzle body (410), a pump box (420) and an axial flow paddle (430), the nozzle body (410) is a de Laval nozzle structure for improving the flow kinetic energy of liquid flow, the axial flow paddle (430) comprises a liquid inlet paddle disc (431) and an axial flow paddle rod (432), the liquid inlet paddle disc (431) is driven to rotate by a motor, so that the transformer oil flows along the surface of the axial flow paddle rod (432), and the axial flow paddle rod (432) is used for pushing the oil liquid to move upward in the inside of the nozzle body (410).

2. The transformer tank of claim 1, wherein, The cooling coil (300) is spirally arranged in the inside of the transformer oil tank (100) to form a stable cooling liquid flow path in the transformer oil.

3. The transformer tank of claim 1, wherein, The fan (210) is an axial flow fan, and a plurality of the fans (210) are arranged in a matrix shape on the surface of the radiator group (200) to enhance the heat dissipation effect.

4. The quick heat dissipating transformer tank according to claim 1, characterized in that, The circulating pump group (220) comprises at least two circulating pumps which respectively communicate with the cooling coil (300) and the radiator group (200) to form a double-loop cooling channel.

5. The quick heat dissipating transformer tank according to claim 1, wherein, The inside of the nozzle body (410) is a de Laval nozzle structure with a tapering-increasing structure, and the minimum diameter of the inside of the nozzle body (410) is located above the axial flow paddle (430).

6. The quick heat dissipating transformer tank according to claim 1, wherein, The axial flow paddle rod (432) is spirally arranged to guide the oil liquid to form a vortex flow in the inside of the nozzle body (410).

7. The quick heat dissipating transformer tank according to claim 1, wherein, The surface of the pump box (420) is provided with a liquid inlet hole for forming a stable liquid flow when the transformer oil passes through the pump box (420), and the outside of the pump box (420) is provided with a high-temperature-resistant coating to improve the corrosion resistance and heat resistance.

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