Forced oil circulation water cooler for transformer

Abstract

The utility model provides a forced oil circulation water cooler for a transformer, which belongs to the technical field of cooling devices and adopts the technical scheme that the forced oil circulation water cooler comprises a fixed plate, a cooling shell arranged at the top of the fixed plate, a plurality of groups of vacuum heat dissipation plates arranged on the peripheral side of the cooling shell, a filter plate arranged on the inner wall of the cooling shell, and a stirring component arranged above the filter plate, an oil pipe is arranged in the cooling shell, the two ends of the oil pipe penetrate out of the cooling shell, multiple sets of cooling fins are fixedly connected to the peripheral side of the oil pipe, an electric valve is arranged at the end, close to the stirring assembly, of the oil pipe, a temperature sensor is arranged in the electric valve, and a manual switch is arranged on one side of the cooling shell. According to the cooling water cooling device, cooling water impurities can be adsorbed to an adsorption plate through cooperation of a stirring assembly and the adsorption plate, the cooling efficiency of the device is improved through cooperation of the stirring assembly, a vacuum cooling plate, cooling fins, an electric valve and a temperature sensor, and the service life of the device can be effectively prolonged.

Description

Technical Field

[0001] The utility model belongs to the technical field of cooling devices, and more specifically, relates to a forced oil circulation water cooler for a transformer. Background Art

[0002] As a key equipment in the power system, the stability and reliability of transformer operation are directly related to the safety and efficiency of the entire power grid. Transformers generate a lot of heat during operation. Forced oil circulation water cooler is a common transformer cooling method. The oil inside the transformer is forced to circulate through an oil pump. The oil flows through the transformer windings and iron core, absorbing the heat generated, and then flows to the cooler. The whole process is repeated to ensure that the internal temperature of the transformer is kept within a reasonable range.

[0003] For example, the Chinese utility model patent with patent number CN202222375206.5 provides a forced oil circulation water cooler for transformers. The device increases the contact area with water through the arrangement of oil pipes, heat conduction plates, semiconductor refrigeration sheets and other parts through the coiled oil pipes. The water in the water cooler is cooled by contact with the heat conduction plates and semiconductor refrigeration sheets, and the heat dissipation efficiency is improved in combination with the coiled oil pipes.

[0004] At present, the heat dissipation efficiency of traditional forced oil circulation water coolers is low, which easily causes the oil temperature in the pipe to be too high. The cooler cannot effectively cool the transformer, causing the temperature of the transformer to be too high when it is working, thereby reducing the transformer's working efficiency. When the traditional forced oil circulation water cooler is working, the equipment often remains in working condition. After long-term use by users, the long-term wear of components and impurities in the cooling water will affect the service life of the equipment. Utility Model Content

[0005] In order to solve the above technical problems, the utility model provides a forced oil circulation water cooler for a transformer, so as to solve the problem in the prior art that the traditional forced oil circulation water cooler has low heat dissipation efficiency, which easily causes the oil temperature in the pipe to be too high, and the cooler cannot effectively cool the transformer, causing the temperature of the transformer to be too high when it is working, thereby reducing the working efficiency of the transformer; when the traditional forced oil circulation water cooler is working, the equipment often remains in the working state. After long-term use by the user, the long-term wear of the components and impurities in the cooling water will affect the service life of the equipment.

[0006] The purpose and effect of the utility model of a forced oil circulation water cooler for transformers are achieved by the following specific technical means:

[0007] A forced oil circulation water cooler for a transformer comprises a fixed plate, a cooling shell is provided on the top of the fixed plate, a plurality of vacuum heat dissipation plates are provided around the cooling shell, a filter plate is provided on the inner wall of the cooling shell, a stirring assembly is provided above the filter plate, an oil pipe is provided in the cooling shell, both ends of the oil pipe pass through the cooling shell, a plurality of heat dissipation fins are fixedly connected to the circumference of the oil pipe, an electric valve is provided at one end of the oil pipe close to the stirring assembly, a temperature sensor is provided in the electric valve, and a manual switch is provided on one side of the cooling shell.

[0008] According to a preferred embodiment, a connecting plate is fixedly connected to the top of the filter plate, a rotating motor is fixedly connected to the top of the connecting plate, and the stirring assembly includes stirring blades, which are provided on the shaft end of the rotating motor.

[0009] According to a preferred embodiment, the rotary motor, the electric valve and the temperature sensor are all electrically connected to the manual switch.

[0010] According to a preferred embodiment, a detachable top cover is provided on the top of the cooling shell, and the same set of water inlet pipes is passed through the top cover and the top of the connecting plate.

[0011] According to a preferred embodiment, a fixing ring is provided on the top of the top cover and the bottom of the connecting plate, and a manual water valve is provided at one end of the water inlet pipe.

[0012] According to a preferred embodiment, an observation cavity is opened on one side of the cooling shell, an observation window is provided at the opening of the observation cavity, and a glass plate is fixed in the observation window.

[0013] According to a preferred embodiment, the multiple groups of heat dissipation fins and the multiple groups of vacuum heat dissipation plates are all made of copper, and pure water is provided in the multiple groups of vacuum heat dissipation plates.

[0014] According to a preferred embodiment, a connecting sleeve is provided at one end of the oil pipe close to the stirring assembly, and one end of the electric valve is threadedly connected to the oil pipe through the connecting sleeve.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] 1. The setting of the heat dissipation fins greatly increases the area of ​​the oil pipe and the cooling water. When the rotary motor is started, it drives the stirring blades to rotate, accelerating the flow rate of the cooling water, which is conducive to the conduction of heat in the oil pipe to the cooling water; the vacuum heat dissipation plate is vacuum inside and has a large contact area with the air. When the cooling water temperature rises, the pure water in the vacuum heat dissipation plate is circulated and gasified to liquefy the cooling water to effectively dissipate heat, thereby improving the heat exchange rate between cooling water and oil, and effectively solving the problem of low heat dissipation efficiency of traditional forced oil circulation water coolers, which leads to reduced transformer working efficiency.

[0017] 2. Through the setting of the filter plate and the stirring component, impurities in the cooling water will be adsorbed on the filter plate, reducing the impact of cooling water impurities on the equipment; through the cooperation of the temperature sensor, the electric valve and the rotating motor, when the temperature sensor detects that the oil temperature is higher than 55 degrees Celsius, the electric valve and the rotating motor will open to cool the oil circuit, so that the device will not be in working state for a long time, avoiding unnecessary long-term operation and effectively extending the service life of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic structural diagram of a forced oil circulation water cooler for a transformer according to the utility model;

[0019] Figure 2 This is an exploded view of a forced oil circulation water cooler for a transformer according to the utility model;

[0020] Figure 3 This is a schematic structural diagram of the oil pipe and heat dissipation fins in a forced oil circulation water cooler for a transformer according to the utility model;

[0021] Figure 4 The utility model is a structural schematic diagram of a temperature sensor in a forced oil circulation water cooler for a transformer.

[0022] In the figure, the corresponding relationship between the component names and the drawing numbers is as follows:

[0023] 11. Fixing plate; 12. Cooling shell; 13. Vacuum heat sink; 14. Heat sink fins; 15. Filter plate; 16. Oil pipe; 17. Electric valve; 18. Temperature sensor; 19. Manual switch; 21. Connecting plate; 22. Rotating motor; 23. Stirring blade; 24. Top cover; 25. Water inlet pipe; 26. Fixing ring; 27. Manual water valve; 28. Observation chamber; 29. ​​Observation window; 31. Glass plate; 32. Connecting sleeve. DETAILED DESCRIPTION

[0024] The following embodiments of the present invention are described in further detail with reference to the accompanying drawings and examples. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0025] As attached Figure 1 To the attached Figure 4 As shown:

[0026] The utility model provides a forced oil circulation water cooler for a transformer, comprising a fixed plate 11, a cooling shell 12 for cooling forced oil is placed on the top of the fixed plate 11, a plurality of vacuum heat sinks 13 are arranged on the circumference of the cooling shell 12 to improve the heat dissipation effect, a filter plate 15 is installed on the inner wall of the cooling shell 12, a stirring assembly is arranged above the filter plate 15 to accelerate the flow rate of the cooling water, an oil pipe 16 is also provided in the cooling shell 12, both ends of the oil pipe 16 pass through the cooling shell 12, and a plurality of heat sink fins 14 are fixedly connected to the circumference of the oil pipe 16, which help to enhance the heat exchange efficiency, the plurality of heat sink fins 14 and the plurality of vacuum heat sinks 13 are all made of copper, which has good thermal conductivity and low cost, the vacuum heat sink 13 is filled with pure water, the vacuum heat sink 13 is vacuumed, and the pure water inside is continuously circulated to gasify and liquefy, absorb heat, and dissipate heat for the cooling water.

[0027] Please refer to Figure 2 、 Figure 3 and Figure 4 As shown, an electric valve 17 is installed at one end of the oil pipe 16 near the stirring assembly, and a temperature sensor 18 is installed inside the electric valve 17. The temperature sensor 18 can be a PT100 temperature sensor of the joint measuring instrument. The sensor is waterproof and oil-proof, and can accurately measure and is used to monitor the oil temperature in real time. A manual switch 19 is provided on one side of the cooling shell 12, and the device can be started by the switch. The top of the filter plate 15 is fixedly connected to a connecting plate 21, and the top of the connecting plate 21 is fixedly connected to a rotating motor 22. The stirring assembly includes a stirring blade 23, and the shaft end of the rotating motor 22 is installed with a stirring blade 23. Driven by the rotating motor 22, the stirring blade 23 is effectively stirred inside the cooling shell 12, thereby improving the cooling effect and allowing impurities in the cooling water to be adsorbed on the filter plate 15, effectively extending the service life of the device.

[0028] The rotating motor 22, the electric valve 17 and the temperature sensor 18 are all electrically connected to the manual switch 19. The user turns on the device through the manual switch 19 to energize the temperature sensor 18, the rotating motor 22 and the electric valve 17. After the temperature sensor 18 works, it detects the oil temperature. If the oil temperature is higher than 55 degrees Celsius, the electric valve 17 and the rotating motor 22 are opened, so that the oil pipe 16 and the oil circuit in the transformer form a passage, so that the forced oil enters the oil pipe 16 for cooling. The rotating motor 22 drives the stirring blades 23 to stir, accelerating the flow of cooling water. The heat dissipation fins 14 conduct heat to the cooling water to cool the forced oil in the oil pipe 16, and the vacuum heat dissipation plate 13 provided on the cooling shell 12 cools the cooling water in the cooling shell 12, thereby enhancing the heat dissipation efficiency. When the oil temperature is lower than 55 degrees Celsius, the electric valve 17 is closed and the rotating motor 22 is closed to prevent the service life of the device from being reduced due to long-term operation.

[0029] A detachable top cover 24 is provided on the top of the cooling shell 12. The top cover 24 and the top of the connecting plate 21 are penetrated by the same set of water inlet pipes 25 for the entry and exit of cooling water. A fixing ring 26 is provided on the top of the top cover 24 and the bottom of the connecting plate 21 respectively. A manual water valve 27 is provided at one end of the water inlet pipe 25 to facilitate the control of the opening and closing of the water flow. A connecting sleeve 32 is provided at one end of the oil pipe 16 close to the stirring assembly. One end of the electric valve 17 is threadedly connected to the oil pipe 16 through the connecting sleeve 32, making installation and disassembly more convenient.

[0030] In order to facilitate the observation of the operating status of the device and the cooling water level entering the cooling shell 12 through the water inlet pipe 25, an observation chamber 28 is opened on one side of the cooling shell 12, and an observation window 29 is installed at the opening of the observation chamber 28. A glass plate 31 is stuck in the observation window 29, so that the user can clearly observe the internal operating conditions and the cooling water level, and prevent the cooling water level in the cooling shell 12 from being too high and overflowing.

[0031] The embodiments of the present invention are provided for purposes of illustration and description and are not intended to be exhaustive or to limit the present invention to the disclosed forms. Many modifications and variations will be apparent to those skilled in the art. The embodiments are selected and described to better illustrate the principles and practical applications of the present invention and to enable those skilled in the art to understand the present invention and design various embodiments with various modifications suitable for specific applications.

Claims

1. A forced oil circulation water cooler for a transformer, comprising a fixing plate (11), characterized in that: A cooling shell (12) is provided on the top of the fixed plate (11), and a plurality of vacuum heat dissipation plates (13) are provided on the peripheral side of the cooling shell (12). A filter plate (15) is provided on the inner wall of the cooling shell (12), and a stirring assembly is provided above the filter plate (15). An oil pipe (16) is provided in the cooling shell (12), and both ends of the oil pipe (16) pass through the cooling shell (12). A plurality of heat dissipation fins (14) are fixedly connected to the peripheral side of the oil pipe (16). An electric valve (17) is provided at one end of the oil pipe (16) close to the stirring assembly, and a temperature sensor (18) is provided in the electric valve (17). A manual switch (19) is provided on one side of the cooling shell (12).

2. The forced oil circulation water cooler for transformer according to claim 1, characterized in that: The top of the filter plate (15) is fixedly connected to a connecting plate (21), the top of the connecting plate (21) is fixedly connected to a rotating motor (22), the stirring assembly includes a stirring blade (23), and the shaft end of the rotating motor (22) is provided with the stirring blade (23).

3. The forced oil circulation water cooler for transformer according to claim 2, characterized in that: The rotating motor (22), the electric valve (17) and the temperature sensor (18) are all electrically connected to the manual switch (19).

4. The forced oil circulation water cooler for transformer according to claim 1, characterized in that: A detachable top cover (24) is provided on the top of the cooling shell (12), and a same set of water inlet pipes (25) are passed through the top cover (24) and the top of the connecting plate (21).

5. The forced oil circulation water cooler for transformer according to claim 4, characterized in that: A fixing ring (26) is provided on the top of the top cover (24) and the bottom of the connecting plate (21), and a manual water valve (27) is provided at one end of the water inlet pipe (25).

6. The forced oil circulation water cooler for transformer according to claim 1, characterized in that: An observation cavity (28) is provided on one side of the cooling shell (12), an observation window (29) is provided at the opening of the observation cavity (28), and a glass plate (31) is fixed in the observation window (29).

7. The forced oil circulation water cooler for transformer according to claim 1, characterized in that: The plurality of groups of heat dissipation fins (14) and the plurality of groups of vacuum heat dissipation plates (13) are all made of copper, and pure water is provided in the plurality of groups of vacuum heat dissipation plates (13).

8. The forced oil circulation water cooler for transformer according to claim 1, characterized in that: A connecting sleeve (32) is provided at one end of the oil pipe (16) close to the stirring assembly, and one end of the electric valve (17) is threadedly connected to the oil pipe (16) through the connecting sleeve (32).

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