Transformer oil tank

Abstract

The utility model provides a transformer oil tank relates to transformer technical field, the transformer oil tank includes corrugated oil tank body and at least one water cooling device, the inside of corrugated oil tank body contains transformer oil, the outside wall of corrugated oil tank body is provided with a plurality of radiating fins, the water cooling device includes water cooling tank, stirrer and temperature sensor, the water cooling box is detachably installed on the cooling fins, the stirrer is arranged in the water cooling box, the temperature sensor is arranged in the corrugated oil tank body and detects the temperature of transformer oil, the stirrer is in electric connection or communication connection with the temperature sensor, and the stirrer is started and closed according to signals of the temperature sensor. The transformer oil tank can effectively reduce the temperature of the transformer.

Description

Technical Field

[0001] This utility model relates to the field of transformer technology, and in particular to a transformer oil tank. Background Technology

[0002] Common types of oil tanks for small and medium-sized oil-immersed transformers include: fully sealed corrugated oil tanks, oil tanks with openable oil conservators, and bladder oil conservator tanks. Existing oil-immersed transformer tanks are all self-cooling tanks, employing natural cooling. Specifically, the heat generated inside the transformer is transferred to the tank walls or radiators through the natural convection of the transformer oil, and then dissipated to the surrounding environment through natural air convection. Self-cooling tanks have low maintenance costs and good economic efficiency. However, the cooling effect of self-cooling tanks is limited. To meet the transformer's temperature rise limits, the heat dissipation area needs to be increased, which increases the size of the self-cooling tank, consequently increasing manufacturing costs and the required installation space.

[0003] In view of this, based on years of experience in production and design in this and related fields, the inventor has designed a transformer oil tank through repeated experiments in order to solve the problems existing in the prior art. Utility Model Content

[0004] The purpose of this invention is to provide a transformer oil tank that can effectively reduce the temperature of the transformer.

[0005] To achieve the above objectives, this utility model proposes a transformer oil tank, wherein the transformer oil tank includes a corrugated tank body and at least one water-cooling device. The corrugated tank body contains transformer oil, and multiple heat dissipation fins are provided on the outer side wall of the corrugated tank body. The water-cooling device includes a water-cooling box, a stirrer, and a temperature sensor. The water-cooling box is detachably mounted on the heat dissipation fins. The stirrer is disposed inside the water-cooling box. The temperature sensor is disposed inside the corrugated tank body and detects the temperature of the transformer oil. The stirrer is electrically or communicatively connected to the temperature sensor, and the stirrer starts and stops according to the signal from the temperature sensor.

[0006] The transformer tank as described above, wherein the water-cooled tank has a shell, the shell having an upward-opening accommodating cavity, the interior of which contains coolant.

[0007] In the transformer tank described above, a plurality of heat dissipation fins are vertically spaced apart. The housing includes a suspension section and at least one water-cooling section. The water-cooling section is located below the suspension section, and the outer diameter of the suspension section is larger than the outer diameter of the water-cooling section, forming a limiting step. The suspension section is located above the heat dissipation fins, and the limiting step overlaps the heat dissipation fins. The water-cooling section is inserted between two adjacent heat dissipation fins.

[0008] The transformer tank as described above, wherein the shell includes two water-cooled sections, which are located on opposite sides of the suspension section, and the two water-cooled sections and the suspension section form an inverted U-shaped structure.

[0009] As described above, the transformer oil tank has a cover on the top of the shell, and the cover has multiple vents.

[0010] The transformer oil tank as described above has multiple injection ports on its cover.

[0011] In the transformer oil tank described above, the agitator is located at the bottom of the accommodating cavity.

[0012] The transformer oil tank as described above, wherein the agitator includes a bracket, a blade assembly and a drive motor, the bracket is detachably mounted on the bottom plate of the housing, the blade assembly and the drive motor are respectively mounted on the bracket, and the drive motor is connected to the blade assembly and drives the blade assembly to rotate.

[0013] In the transformer oil tank described above, the agitator further includes a signal terminal, and the drive motor is electrically or communicatively connected to the temperature sensor through the signal terminal.

[0014] The transformer oil tank as described above, wherein the corrugated tank body has a tank cover, the temperature sensor is mounted on the tank cover, and the probe of the temperature sensor extends into the transformer oil.

[0015] Compared with the prior art, the present invention has the following features and advantages:

[0016] The transformer oil tank proposed in this utility model has a water-cooling device installed on the heat dissipation fins of the corrugated oil tank body. The water-cooling device rapidly cools the heat dissipation fins, further reducing the temperature of the transformer oil inside the corrugated oil tank body. This effectively improves the thermal conductivity and heat dissipation efficiency of the transformer oil tank, and can further reduce the volume of the transformer oil tank, with low requirements for installation space and space saving. Attached Figure Description

[0017] The accompanying drawings described herein are for illustrative purposes only and are not intended to limit the scope of this invention in any way. Furthermore, the shapes and proportions of the components in the drawings are merely illustrative to aid in understanding the invention and do not specifically limit the shapes and proportions of the components. Those skilled in the art, under the guidance of this invention, can select various possible shapes and proportions to implement this invention according to specific circumstances.

[0018] Figure 1 This is a three-dimensional schematic diagram of the transformer oil tank proposed in this utility model;

[0019] Figure 2 This is a front view of the transformer oil tank in this utility model;

[0020] Figure 3 This is a schematic diagram of the cooling device in this utility model;

[0021] Figure 4 This is a schematic diagram of the structure of the water-cooled box in this utility model;

[0022] Figure 5 This is a schematic diagram of the shell of the water-cooled box in this utility model;

[0023] Figure 6 This is a schematic diagram of the cover of the water-cooled box in this utility model;

[0024] Figure 7 This is a schematic diagram of the stirrer in this utility model.

[0025] Explanation of reference numerals in the attached figures

[0026] 100. Transformer oil tank; 10. Corrugated oil tank body;

[0027] 11. Heat dissipation fins; 12. Case cover;

[0028] 13. Temperature measuring tube; 20. Water cooling device;

[0029] 21. Water-cooled box; 211. Suspension section;

[0030] 212. Water-cooled section; 213. Cover;

[0031] 214. Injection port; 215. Vent port;

[0032] 216. Holding structure; 22. Stirrer;

[0033] 221. Support frame; 222. Paddle assembly;

[0034] 223. Drive motor; 224. Signal terminal;

[0035] 225. Signal line; 23. Temperature sensor. Detailed Implementation

[0036] The details of this utility model can be more clearly understood by referring to the accompanying drawings and the description of specific embodiments. However, the specific embodiments of this utility model described herein are for illustrative purposes only and should not be construed as limiting the utility model in any way. Under the teachings of this utility model, those skilled in the art can conceive of any possible modifications based on this utility model, and these should all be considered to fall within the scope of this utility model.

[0037] like Figures 1 to 7 As shown, this utility model proposes a transformer oil tank 100, which includes a corrugated tank body 10 and at least one water cooling device 20. The corrugated tank body 10 contains transformer oil, and multiple heat dissipation fins 11 are provided on the outer side wall of the corrugated tank body 10. The water cooling device 20 includes a water cooling box 21, a stirrer 22 and a temperature sensor 23. The water cooling box 21 is detachably mounted on the heat dissipation fins 11. The stirrer 22 is disposed inside the water cooling box 21. The temperature sensor 23 is disposed inside the corrugated tank body 10 and detects the temperature of the transformer oil. The stirrer 22 is electrically or communicatively connected to the temperature sensor 23, and the stirrer 22 starts and stops according to the signal from the temperature sensor 23.

[0038] The transformer oil tank 100 proposed in this utility model has a water-cooling device 20 installed on the heat dissipation fins 11 of the corrugated oil tank body 10. The water-cooling device 20 rapidly cools the heat dissipation fins 11, further reducing the temperature of the transformer oil inside the corrugated oil tank body 10. This effectively improves the thermal conductivity and heat dissipation efficiency of the transformer oil tank 100, and can further reduce the volume of the transformer oil tank 100, requiring less installation space and saving space.

[0039] The transformer oil tank 100 proposed in this utility model adopts a heat dissipation method that combines oil immersion self-cooling and water cooling, which effectively reduces the temperature of the transformer inside the corrugated oil tank and ensures that the transformer inside the transformer oil tank 100 can work stably for a long time.

[0040] The transformer oil tank 100 proposed in this utility model has a water cooling device 20 with an agitator 22 installed inside the water cooling tank 21. The temperature of the transformer oil inside the corrugated oil tank body 10 is detected by a temperature sensor 23. The water cooling device 20 controls the start and stop of the agitator 22 based on the detected temperature data. After the agitator 22 is started, the cooling effect of the water cooling device 20 is enhanced, and the transformer oil inside the corrugated oil tank body 10 can be cooled more quickly.

[0041] In one optional embodiment of this utility model, the water-cooled tank 21 has a shell with an upward-opening accommodating cavity containing coolant. When the temperature of the transformer oil in the transformer tank 100 reaches a predetermined value, the temperature sensor 23 transmits a signal to the stirrer 22. Upon receiving the signal, the stirrer 22 starts, and the high temperature inside the corrugated tank body 10 is transferred to the water-cooled tank 21 through the heat dissipation fins 11. Under the stirring action of the stirrer 22, the coolant forms convection with the air to quickly transfer the heat in the coolant to the air, effectively improving the overall thermal conductivity and heat dissipation efficiency of the transformer tank 100.

[0042] In an optional example of this embodiment, the coolant may be cooling water or other cooling media known to those skilled in the art.

[0043] In an optional embodiment, multiple heat dissipation fins 11 are vertically spaced. The housing includes a suspension section 211 and at least one water-cooling section 212. The water-cooling section 212 is located below the suspension section 211, and the outer diameter of the suspension section 211 is larger than the outer diameter of the water-cooling section 212, forming a limiting step. The suspension section 211 is located above the heat dissipation fins 11, and the limiting step overlaps the heat dissipation fins 11. The water-cooling section 212 is inserted between two adjacent heat dissipation fins 11. With the above structure, the housing can be suspended on the heat dissipation fins 11 through the suspension section 211. The structure is simple, easy to install and disassemble, and has low manufacturing and maintenance costs.

[0044] In an optional example, the housing includes two water-cooling sections 212, which are located on opposite sides of the suspension section 211, forming an inverted U-shape with the suspension section 211. This structure allows the water-cooled box 21 to be more stably mounted on the heat dissipation fins 11, ensuring the normal operation of the water-cooling device 20.

[0045] In one optional embodiment of this implementation, the top of the housing is provided with a cover 213, and the cover 213 has multiple vents 215. The vaporized coolant is discharged through the vents 215 to ensure the heat dissipation effect of the coolant.

[0046] In one optional embodiment, the cover 213 is provided with a plurality of liquid injection ports 214, through which coolant can be replenished into the accommodating cavity in a timely manner.

[0047] In an optional embodiment, the housing is also provided with a holding structure 216 to facilitate the operator's handling of the water-cooled box 21.

[0048] In one optional embodiment of this invention, the agitator 22 is disposed at the bottom of the accommodating cavity. After the agitator 22 is activated, the coolant flows rapidly, and the coolant exchanges heat with the corrugated oil tank body 10, thereby reducing the temperature of the transformer oil inside the corrugated oil tank body 10.

[0049] In an optional example of this embodiment, the agitator 22 includes a support 221, a blade assembly 222, and a drive motor 223. The support 221 is detachably mounted on the bottom plate of the housing. The blade assembly 222 and the drive motor 223 are respectively mounted on the support 221. The drive motor 223 is connected to the blade assembly 222 and drives the blade assembly 222 to rotate. With the above structure, the drive motor 223 drives the blade assembly 222 to rotate, thereby agitating the coolant.

[0050] In an optional example, the bracket 221 has mounting holes. Mounting bolts pass through the mounting holes and fall into the base plate of the water-cooled tank 21, thereby securing the bracket 221.

[0051] In an optional example, the stirrer 22 also includes a signal terminal 224, through which the drive motor 223 is electrically or communicatively connected to the temperature sensor 23. The signal terminal 224 receives signals from the temperature sensor 23 and controls the start and stop of the drive motor 223 according to the signals.

[0052] In an optional example, signal terminal 224 is electrically connected to temperature sensor 23 via signal line 225.

[0053] In one optional embodiment of this utility model, the corrugated oil tank body 10 has a tank cover 12, a temperature measuring tube 13 is provided on the tank cover 12, a temperature sensor 23 is installed inside the temperature measuring tube 13, and the temperature measuring tube 13 extends downward into the transformer oil, thereby realizing the detection of the transformer oil temperature.

[0054] In an optional example of this implementation, the temperature measuring tube 13 extends into the transformer oil by at least 20 mm.

[0055] In an optional embodiment of this utility model, the temperature sensor 23 has a built-in start temperature value and a stop temperature value. When the temperature detected by the temperature sensor 23 reaches the start temperature value, the temperature sensor 23 sends a start signal to the stirrer 22, and the stirrer 22 starts to work. When the temperature detected by the temperature sensor 23 drops to the stop temperature value, the temperature sensor 23 sends a stop signal to the stirrer, and the stirrer 22 stops working.

[0056] In one optional example of this implementation, the on-temperature value is 100°C and the off-temperature value is 85°C.

[0057] In an optional example of this implementation, temperature sensor 23 is a PT100 temperature sensor.

[0058] In an optional embodiment of this invention, the number of water-cooling devices 20 installed on the corrugated oil tank body 10 can be determined according to actual design requirements.

[0059] In an optional example, water cooling devices 20 are installed on the four sides of the corrugated tank body 10.

[0060] Please refer to Figures 1 to 7 The specific working process of the transformer oil tank 100 proposed in this utility model will now be described in detail with reference to an embodiment.

[0061] Before the transformer oil tank 100 is put into operation, coolant is injected through the injection port 214. The coolant is water, but other harmless liquids familiar to those skilled in the art can also be used. When the temperature of the transformer oil inside the corrugated tank body 10 reaches the opening temperature, the temperature sensor 23 in the temperature measuring tube 13 transmits an opening signal to the stirrer 22, which starts. The high temperature in the adjacent corrugated tank body 10 is transferred to the water-cooled tank 21. Under the operation of the stirrer 22, the coolant and air are rapidly convected to transfer heat to the air for cooling. When the temperature of the transformer oil inside the corrugated tank body 10 drops to 85°C, the temperature sensor 23 transmits a closing signal to the stirrer 22, which then shuts down. By monitoring the temperature inside the corrugated tank body 10 through the temperature sensor 23, the opening and closing of the stirrer 22 is automatically adjusted to ensure that the internal temperature of the corrugated tank body 10 remains within a suitable range.

[0062] The detailed explanations of the above embodiments are intended only to explain the present invention so as to facilitate a better understanding of the present invention. However, these descriptions should not be construed as limiting the present invention for any reason. In particular, the various features described in different embodiments can be arbitrarily combined with each other to form other embodiments. Unless there is an explicit description to the contrary, these features should be understood to be applicable to any embodiment, and not limited to the described embodiments.

Claims

1. A transformer tank, characterized in that The transformer oil tank comprises a corrugated oil tank body and at least one water cooling device, the inside of the corrugated oil tank body contains transformer oil, the outer wall of the corrugated oil tank body is provided with a plurality of heat dissipation fins, the water cooling device comprises a water cooling tank, an agitator and a temperature sensor, the water cooling tank is detachably mounted on the heat dissipation fins, the agitator is arranged in the water cooling tank, the temperature sensor is arranged in the corrugated oil tank body and detects the temperature of the transformer oil, the agitator is electrically connected or communicatively connected with the temperature sensor, and the agitator is started and stopped according to the signal of the temperature sensor.

2. The transformer tank according to claim 1, characterized in that The water cooling tank has a shell, the shell has a containing cavity opening upward, and the containing cavity contains cooling liquid.

3. The transformer tank according to claim 2, characterized in that A plurality of heat dissipation fins are vertically and spacedly arranged, the shell comprises a hanging section and at least one water cooling section, the water cooling section is located below the hanging section, the outer diameter of the hanging section is greater than that of the water cooling section and forms a limiting step, the hanging section is located above the heat dissipation fins and the limiting step overlaps the heat dissipation fins, and the water cooling section is inserted between two adjacent heat dissipation fins.

4. The transformer tank according to claim 3, characterized in that The shell comprises two water cooling sections, and the two water cooling sections are respectively located on opposite sides of the hanging section, and the two water cooling sections and the hanging section form an inverted U-shaped structure.

5. The transformer tank of claim 2, wherein The top of the shell is provided with a cover, and a plurality of exhaust ports are formed in the cover.

6. The transformer tank according to claim 5, characterized in that A plurality of liquid injection ports are formed in the cover.

7. The transformer tank according to claim 2, wherein The agitator is arranged at the bottom of the containing cavity.

8. The transformer tank according to claim 7, characterized in that The agitator comprises a bracket, a paddle assembly and a driving motor, the bracket is detachably mounted on the bottom plate of the shell, the paddle assembly and the driving motor are respectively mounted on the bracket, and the driving motor is connected with the paddle assembly and drives the paddle assembly to rotate.

9. The transformer tank according to claim 8, characterized in that The agitator further comprises a signal terminal, and the driving motor is electrically connected or communicatively connected with the temperature sensor through the signal terminal.

10. The transformer tank according to claim 1, wherein The corrugated oil tank body has a tank cover, the temperature sensor is mounted on the tank cover, and a probe of the temperature sensor extends into the transformer oil.

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