A protective cover for a transformer

Abstract

The application discloses a protective cover of a transformer, which is used for protecting and radiating the transformer. The protective cover comprises a baffle, a spraying assembly, a fan assembly and a water storage tank. The baffle surrounds the periphery of the transformer and forms an annular heat dissipation air duct with the transformer, which is used for guiding the airflow flow path and isolating the external environment interference. The spraying assembly is arranged above the transformer and is used for forming uniform water mist to spray and cool the whole transformer. The fan assembly is installed in the heat dissipation air duct and is used for guiding the airflow to flow downward to accelerate the heat discharge. The upper end of the water storage tank is connected with the baffle, and the side of the water storage tank is provided with air outlet openings, and the water storage tank is used for collecting the spraying water and assisting heat dissipation. The protective cover of the application isolates the external interference through the baffle and forms a directional annular heat dissipation air duct, and cooperates with the uniform spraying system at the top to realize three-dimensional cooling, and effectively solves the contradiction between the uneven heat dissipation and the insufficient protection of the traditional device.

Description

Technical Field

[0001] This application relates to the field of heat dissipation and protection technology for power equipment, and more specifically, to a protective cover for a transformer. Background Technology

[0002] Traditional transformer protection devices generally suffer from a technical contradiction between achieving efficient heat dissipation and protective performance. Existing technologies often employ open heat dissipation grid structures, which, while providing basic heat dissipation, pose safety hazards such as rainwater infiltration and dust accumulation. Some improvements, such as adding spray systems to enhance heat dissipation, lead to water waste and uneven cooling. Furthermore, traditional water storage structures are simple and fail to effectively utilize the principle of evaporative cooling. Therefore, there is an urgent need for a protective device that can achieve directional airflow guidance, uniform water mist coverage, and synergistic cooling through circulation, thereby improving heat exchange efficiency while ensuring equipment safety. Utility Model Content

[0003] This application provides a protective cover for a transformer, used for protecting and dissipating heat from the transformer. The protective cover includes a baffle, a spray assembly, a fan assembly, and a water storage tank. The baffle surrounds the transformer, forming a ring-shaped heat dissipation duct between the baffle and the transformer, guiding the airflow path and isolating external environmental interference. The spray assembly is located directly above the transformer, used to generate a uniform water mist to spray and cool the entire transformer. The fan assembly is installed in the heat dissipation duct, used to guide the airflow downwards to accelerate heat dissipation. The upper end of the water storage tank is connected to the baffle, and the side of the water storage tank has a vent. The water storage tank is used to collect sprayed water and assist in heat dissipation.

[0004] In some embodiments, the top edge of the baffle is provided with an outwardly inclined flared extension plate for collecting sprayed water mist and preventing water from splashing out.

[0005] In some embodiments, the spray assembly includes a main water pipe, branch water pipes, spray nozzles, and a water pump. The main water pipe is located at the top of the transformer, and the branch water pipes are symmetrically distributed on both sides of the main water pipe and connected to the main water pipe through branch joints. Multiple spray nozzles are evenly distributed on the branch water pipes, and the water pump is used to transport water from the water storage tank to the main water pipe.

[0006] In some embodiments, the fan assembly includes a bracket, a fan, and a linkage structure. The bracket is fixed within the heat dissipation duct between the transformer and the baffle, and water flow channels are maintained on opposite sides of the bracket between the transformer and the baffle, respectively. Multiple fan arrays are mounted on the bracket, and the linkage structure connects opposite sides of the bracket to the transformer and the baffle, respectively.

[0007] In some embodiments, a cold air window is provided on the baffle corresponding to the position of the fan. The bracket is inclined so that part of the air inlet direction of the fan is aligned with the cold air window and part is oriented towards the heat dissipation air duct.

[0008] In some embodiments, the inclination angle of the bracket is designed such that 50% of the air inlet area of the fan is aligned with the cold air window and the remaining 50% faces the heat dissipation air duct to optimize the air flow path.

[0009] In some embodiments, flow guiding plates are arranged at intervals on the outer side of the baffle. The flow guiding plates and the baffle form a cold air channel. The inlet of the cold air channel is located at the top of the baffle, and the outlet of the cold air channel is connected to the cold air window to enhance the cooling efficiency.

[0010] In some embodiments, a hollow air dispersion channel is provided inside the water storage tank. The cross-section of the water storage tank is in a "hui" (Chinese character for "return") shaped structure to improve the heat dissipation and drainage performance.

[0011] In some embodiments, a filtering device is provided in the air outlet and the air dispersion channel for filtering moisture and impurities in the air flow.

[0012] In some embodiments, a temperature sensor is provided on the transformer. The temperature sensor and the water pump are respectively electrically connected to the central control module. The central control module controls the switch and the water volume of the water pump according to the signal of the temperature sensor.

[0013] The protective cover of the present application isolates external interference through the baffle and forms a directional annular heat dissipation air duct, and cooperates with the top uniform spraying system to achieve three-dimensional cooling, effectively solving the contradiction between uneven heat dissipation and insufficient protection of traditional devices. The fan assembly strengthens the air flow circulation to improve the heat exchange efficiency, and the water storage tank integrates the functions of water recovery and evaporation heat dissipation to realize the recycling of water resources.

[0014] Additional aspects and advantages of the embodiments of the present application will be given in part in the following description, become apparent in part from the following description, or be understood through the practice of the embodiments of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The above and / or additional aspects and advantages of the present application will become apparent and be readily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0016] Figure 1 is a half-sectional view of the central plane of the long side of the protective cover of the embodiment of the present application;

[0017] Figure 2 is a half-sectional view of the central plane of the short side of the protective cover of the embodiment of the present application;

[0018] Figure 3 is Figure 2Enlarged view of section A;

[0019] Figure 4 This is a schematic diagram of the structure of the spray assembly according to an embodiment of this application.

[0020] Explanation of main component symbols: Protective cover 100, baffle 10, extension plate 11, heat dissipation duct 12, cold air window 13, guide plate 14, cold air channel 15, spray assembly 20, main water pipe 21, branch water pipe 22, nozzle 23, water pump 24, fan assembly 30, bracket 31, fan 32, connecting rod structure 33, water flow channel 34, water storage tank 40, air diffuser 41, air diffusion channel 42, filter device 43. Detailed Implementation

[0021] The embodiments of this application will be further described below with reference to the accompanying drawings. The same or similar reference numerals in the drawings denote the same or similar elements or elements having the same or similar functions throughout.

[0022] Furthermore, the embodiments of this application described below in conjunction with the accompanying drawings are exemplary and are only used to explain the embodiments of this application, and should not be construed as limiting this application.

[0023] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0024] Please see Figure 1 and Figure 2 This application discloses a protective cover 100 for a transformer 200, used for protecting and dissipating heat from the transformer 200. The protective cover 100 includes a baffle 10, a spray assembly 20, a fan assembly 30, and a water storage tank 40. The baffle 10 surrounds the transformer 200, forming an annular heat dissipation duct 12 between itself and the transformer 200, guiding the airflow path and isolating external environmental interference. The spray assembly 20 is located directly above the transformer 200, used to generate a uniform water mist to spray and cool the entire transformer 200. The fan assembly 30 is installed in the heat dissipation duct 12, used to guide the airflow downward to accelerate heat dissipation. The upper end of the water storage tank 40 is connected to the baffle 10, and a vent 41 is opened on the side of the water storage tank 40, used to collect sprayed water and assist in heat dissipation.

[0025] The protective cover 100 of this application isolates external interference through the baffle 10 and forms a directional annular heat dissipation airflow. Combined with a uniform top spray system, it achieves three-dimensional cooling. This innovative heat dissipation method breaks through the limitations of uneven heat dissipation and insufficient protection in traditional devices, effectively resolving the contradiction between the two. The fan assembly 30 enhances airflow circulation, significantly improving heat exchange efficiency. The water storage tank 40 integrates water recycling and evaporative cooling functions, realizing the recycling of water resources. While ensuring the stable operation of the transformer 200, it reduces operating costs, conforming to the concept of green and environmentally friendly development.

[0026] Specifically, please combine Figure 1 and Figure 2 The transformer 200 is roughly rectangular in shape. A ring-shaped airflow channel is formed around the transformer 200 body, together with the outer wall of the transformer 200. This effectively guides airflow along a predetermined path while isolating the transformer from external dust, debris, and other interfering factors, creating a relatively stable and clean working environment. A baffle 10 forms a 50-100mm wide annular heat dissipation duct 12 with the transformer 200 body. The baffle 10 is made of insulating material.

[0027] The sprinkler assembly 20 is located 0.5-1m from the top of the transformer 200, covering an area of ​​130% of the projected area of ​​the transformer 200. The sprinkler assembly 20 includes a main water pipe 21, branch water pipes 22, sprinkler heads 23, and a water pump 24. The main water pipe 21 is located at the middle of the top of the transformer 200, and its axis is the same along the length of the transformer 200. The branch water pipes 22 are symmetrically distributed on both sides of the main water pipe 21 and are connected to the main water pipe 21 through branch joints. Multiple sprinkler heads 23 are evenly distributed on the branch water pipes 22, and the water pump 24 is used to transport water from the water storage tank 40 to the main water pipe 21.

[0028] The main water pipe 21 is arranged along the central axis of the top of the transformer 200. The branch water pipe 22 is connected to the main water pipe 21 through a T-shaped branch joint, forming a symmetrical spray network. Sprayers 23 are evenly distributed on both sides of the branch water pipe 22, forming a dense spray network. This dense sprayer layout ensures uniform water mist coverage and prevents insufficient local cooling. The water pump 24 and the water storage tank 40 form a closed-loop circulation. The spray flow rate is dynamically adjusted through frequency conversion control technology. Based on the real-time temperature changes of the transformer 200, the spray water volume is precisely controlled, ensuring both heat dissipation and avoiding water waste.

[0029] The fan assembly 30 is located on both sides of the long side of the transformer 200, at the upper and lower center of the baffle 10. Through its powerful airflow, it guides the airflow downwards, accelerating the dissipation of heat around the transformer 200, forming a good air convection circulation, and further improving the heat dissipation effect. The fan assembly 30 includes a bracket 31, fans 32, and a connecting rod structure 33. The bracket 31 is fixed within the heat dissipation duct 12 between the transformer 200 and the baffle 10. Water flow channels 34 are maintained on both sides of the bracket 31 between the transformer 200 and the baffle 10. Multiple fans 32 are arrayed and mounted on the bracket 31, with the array direction aligned with the length direction of the transformer. The connecting rod structure 33 connects the opposite sides of the bracket 31 to the transformer 200 and the baffle 10 respectively, ensuring the stability and reliability of the fan assembly 30 during operation.

[0030] A water storage tank 40 is located at the bottom of the transformer 200 to collect water flowing down from the spray assembly 20. The upper end of the water storage tank 40 is tightly connected to the baffle 10 to form an integrated structure. A honeycomb-shaped air diffuser 41 with a diameter of 20mm is opened on the side wall of the water storage tank 40, through which the air blown by the fan 32 is discharged. This design is conducive to heat dissipation and airflow.

[0031] Furthermore, the top edge of the baffle 10 is provided with an outwardly inclined flared extension plate 11 for collecting sprayed water mist and preventing water from splashing out. Specifically, the top edge of the baffle 10 is provided with an outwardly inclined flared extension plate 11, the inclination angle of which is designed to be 15°-30°, forming a guide slope with the horizontal plane. During the falling process of the sprayed water mist, this structure guides the water mist along the inner wall of the baffle 10 to the water storage tank 40 through physical guidance, which can effectively prevent water mist from splashing to the outside and avoid the risk of water accumulation on surrounding equipment or the ground. Due to the guiding effect of the inner wall of the baffle 10, it can isolate the influence of the external ambient temperature, which is especially suitable for high-temperature environments, providing a relatively stable internal environment for the transformer 200 and ensuring the normal operation of the transformer 200.

[0032] Furthermore, a cold air window 13 is provided on the baffle 10 corresponding to the position of the fan 32. The bracket 31 is inclined so that part of the air intake direction of the fan 32 is aligned with the cold air window 13, and part is aligned with the heat dissipation duct 12. Specifically, the cold air window 13 is opened on the baffle 10 corresponding to the position of the fan 32, and the ratio of its window area to the air outlet area of ​​the fan 32 is designed to be 1:1.2. The bracket 31 is installed at an angle of 15°-25°, so that 50% of the air intake direction of the fan 32 is aligned with the cold air window 13 to form positive pressure air supply, and the remaining 50% faces the heat dissipation duct 12 to form negative pressure air extraction. Through this dual-mode airflow coupling method, the heat dissipation effect is greatly enhanced, making the airflow around the transformer 200 smoother and the heat can be dissipated more quickly.

[0033] Furthermore, flow guiding plates 13 are arranged at intervals outside the baffle 10, forming a cold air channel 15 with the baffle 10. The inlet of the cold air channel 15 is located at the top of the baffle 10, and the outlet of the cold air channel 15 is connected to the cold air window 13, enhancing the cooling efficiency. Specifically, the flow guiding plate 13 is located below the extension plate 11, parallel to the baffle 10 at intervals, forming a cold air channel 15 with a width of 50 mm. On the one hand, the chimney effect is utilized to increase the natural ventilation volume by 35% and reduce the energy consumption by 18% under forced heat dissipation conditions. On the other hand, in a high-temperature environment, after the airflow entering the cold air channel 15 contacts the baffle 10, due to the existence of water flow on the other side, the temperature of the airflow can be reduced, improving the heat dissipation effect of the transformer 200.

[0034] Furthermore, a hollow air-dissipating channel 42 is provided inside the water storage tank 40. The cross-section of the water storage tank 40 is in a "return" shape structure, enhancing the heat dissipation and drainage performance. A filtering device 43 is provided in the air outlet 41 and the air-dissipating channel 42 for filtering moisture and impurities in the airflow. The filtering device 43 is a detachable composite filter screen, including an 80-mesh stainless steel mesh and an activated carbon layer, achieving 80% water vapor recovery, preventing the humid air from affecting the external environment, and at the same time ensuring the cleanliness of the airflow.

[0035] Furthermore, a temperature sensor (not shown) is provided on the transformer 200. The temperature sensor and the water pump 24 are respectively electrically connected to the central control module. The central control module accurately controls the switch and water volume of the water pump 24 according to the signal of the temperature sensor. The temperature sensor is arranged at key parts such as the windings and iron cores of the transformer 200 to ensure that the temperature changes of the core parts of the transformer 200 can be monitored in real time and accurately. The water pump 24 and the fan 32 group are联动 controlled through the PLC central control module. When the temperature ≥ the set threshold, the spraying and strong wind modes are started. The specific control strategy is as follows: The fan 32 is started at the low speed gear at 50°C. At this time, the fan 32 operates at a relatively low speed, which can not only play a certain heat dissipation role but also reduce the energy consumption; Spraying is triggered and the fan 32 is switched to the high speed gear at 60°C. When the temperature rises, the spraying and the fan 32 are quickly started to operate at high speed to quickly reduce the temperature of the transformer 200; An audible and visual alarm is started at 70°C to promptly remind the staff to take corresponding measures to avoid damage to the transformer 200 due to excessive temperature.

[0036] In the description of this specification, the references to "certain embodiments," "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples" refer to specific features, structures, materials, or characteristics described in connection with the described embodiment or example, which are included in at least one embodiment or example of this application. 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.

[0037] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the stated features. In the description of this application, "multiple" means at least two, such as two or three, unless otherwise explicitly specified.

[0038] Although embodiments of this application have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting this application. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of this application, the scope of which is defined by the claims and their equivalents.

Claims

1. A protective cover for a transformer for protecting and cooling the transformer, characterized in that, Comprising: A baffle plate that surrounds the transformer on all sides, forming an annular heat dissipation air duct between the baffle plate and the transformer, for guiding the airflow path and isolating external environmental interference; A spray component that is arranged directly above the transformer, for forming a uniform water mist to spray and cool the entire transformer; A fan component that is installed in the heat dissipation air duct, for guiding the airflow to flow downward to accelerate heat discharge; A water storage tank, the upper end of which is connected to the baffle plate, and a air vent is provided on the side of the water storage tank, and the water storage tank is used for collecting sprayed water and assisting in heat dissipation.

2. The boot of claim 1, wherein, An outwardly inclined flared extension plate is provided at the top edge of the baffle plate for collecting sprayed water mist and preventing water from splashing out.

3. The boot of claim 1, wherein, The spray component includes A main water pipe that is arranged on the top of the transformer; Branch water pipes that are symmetrically distributed on both sides of the main water pipe and are connected to the main water pipe through branch joints; Multiple nozzles that are evenly distributed on the branch water pipes; And a water pump that is used to transport the water in the water storage tank to the main water pipe.

4. The boot of claim 1, wherein, The fan component includes: A bracket that is fixed in the heat dissipation air duct between the transformer and the baffle plate, and water flow channels are reserved between the opposite sides of the bracket and the transformer and the baffle plate respectively; Multiple fans that are array-mounted on the bracket; And a connecting rod structure that connects the opposite sides of the bracket to the transformer and the baffle plate respectively.

5. The boot of claim 4, wherein, Cold air windows are provided on the baffle plate corresponding to the positions of the fans, and the bracket is inclined so that part of the air inlet direction of the fans is aligned with the cold air windows and part faces the heat dissipation air duct.

6. The boot claimed in claim 5, wherein The inclination angle of the bracket is designed such that 50% of the air inlet area of the fans is aligned with the cold air windows and the remaining 50% faces the heat dissipation air duct to optimize the airflow path.

7. The boot claimed in claim 6, wherein Deflector plates are arranged at intervals on the outside of the baffle plate, and the deflector plates and the baffle plate form a cold air channel. The inlet of the cold air channel is located at the top of the baffle plate, and the outlet of the cold air channel is connected to the cold air window to enhance the cooling efficiency.

8. The boot of claim 1, wherein, A hollow air dispersion channel is provided inside the water storage tank, and the cross-section of the water storage tank is in a "return" shape structure to improve the heat dissipation and drainage performance.

9. The boot claimed in claim 8, wherein Filter devices are provided in the air vents and the air dispersion channels for filtering moisture and impurities in the airflow.

10. The boot of claim 3, wherein, A temperature sensor is provided on the transformer, and the temperature sensor and the water pump are respectively electrically connected to a central control module. The central control module controls the switch and water volume of the water pump according to the signal of the temperature sensor.

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