Oil cooling device for oil-immersed transformer

Abstract

The utility model relates to the technical field of oil-immersed transformers, and discloses an oil cooling device for an oil-immersed transformer, which comprises an oil cooling box, a cover plate is arranged at the top of the oil cooling box, cooling assemblies are arranged in front of and behind the cover plate, the two cooling assemblies are symmetrically arranged by taking the oil cooling box as a center, and each cooling assembly comprises a water cooling box. Oil well pumps are fixedly connected to the front face and the back face of the oil cooling box, and parts connected with the two oil well pumps are the same. Hot oil in the oil cooling box is pumped out through the oil inlet pipe by the oil well pump and then conveyed into the S-shaped pipeline through the oil outlet pipe, cooling oil flows into the S-shaped pipeline and is cooled by making contact with water flow in the water cooling box, the cooling effect can be rapidly achieved, then the cooling oil enters the shell again through the first connecting pipe, and the cooling effect is improved. Through such circulation, the temperature in the oil cooling box can be quickly reduced, the condition that the cooling oil is relatively hot is avoided, and the heat dissipation effect of the transformer is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of oil-immersed transformer equipment, and particularly to an oil cooling device for an oil-immersed transformer. Background Art

[0002] An oil cooling device for an oil-immersed transformer is a cooling system that uses oil as a cooling medium, mainly used in large power transformers to dissipate the heat generated during operation.

[0003] The existing oil cooling devices for oil-immersed transformers mainly use the natural convection or forced circulation of oil to absorb and transfer the heat generated inside the transformer, and then release the heat to the external environment through a radiator. This method results in poor cooling effect of the internal cooling oil and slow cooling efficiency, making it impossible for the transformer to be effectively cooled quickly. It will not only cause the temperature of the cooling oil to be too high, but also easily cause the temperature of the transformer to be too high and damage. Therefore, we propose an oil cooling device for an oil-immersed transformer. Summary of the Invention

[0004] The purpose of the present invention is to provide an oil cooling device for an oil-immersed transformer to solve the problems raised in the above background art.

[0005] To solve the above technical problems, the present invention is realized through the following technical solutions:

[0006] The present invention is an oil cooling device for an oil-immersed transformer, including an oil cooling tank. A cover plate is provided on the top of the oil cooling tank. Cooling components are provided in front of and behind the cover plate. The two cooling components are symmetrically arranged with the oil cooling tank as the center. The cooling component includes a water cooling tank. A fuel pump is fixedly connected to the front and back of the oil cooling tank. The parts connected by the two fuel pumps are the same. The bottom oil inlet of the fuel pump is fixedly connected to an oil inlet pipe. The side of the oil inlet pipe away from the fuel pump is fixedly connected to the surface of the oil cooling tank. The top oil outlet of the fuel pump is fixedly connected to an oil outlet pipe;

[0007] An S-shaped pipe is arranged inside the water cooling tank. The left and right sides of the S-shaped pipe penetrate through the water cooling tank and extend to the outside. The top of the left side of the S-shaped pipe is fixedly connected to the side of the oil outlet pipe away from the fuel pump. A connecting pipe one is fixedly connected to the top of the right side of the S-shaped pipe. A housing is fixedly connected to the side of the connecting pipe one close to the oil cooling tank. A connecting pipe two is fixedly connected to the side of the housing close to the oil cooling tank. The side of the connecting pipe two away from the housing is fixedly connected to the oil cooling tank.

[0008] Further, a regulating block is slidably connected to the inner wall of the housing. A plurality of openings are formed inside the regulating block. A sliding rod is fixedly connected to the front surface of the regulating block. A convex ring is fixedly connected to the outer surface of the sliding rod. A fixing rod is fixedly connected to the top of the convex ring. A connecting rod is fixedly connected to the top of the fixing rod. A fixing shaft is fixedly connected to the top of the connecting rod. A motor is fixedly connected to the top of the housing. An elliptical disk is fixedly connected to the output end at the bottom of the motor.

[0009] Further, a bracket is fixedly connected to the inner wall of the housing. The sliding rod penetrates through the bracket in front and extends to the outside. The outer surface of the sliding rod is slidably connected to the inner side of the bracket. A spring is sleeved on the outer side of the sliding rod. One side of the spring close to the convex ring is fixedly connected to the surface of the convex ring. The side of the spring far from the convex ring is fixedly connected to the surface of the bracket.

[0010] Further, the bracket is triangularly arranged. The outer side of the elliptical disk contacts the outer side of the fixing shaft. The front surface of the regulating block is conically arranged. The outer side of the regulating block is adapted to the inner wall of the second connecting pipe.

[0011] Further, a base is fixedly connected to the bottom of the water cooling box. A plurality of support frames are fixedly connected to the bottom of the base. One side of the support frame close to the oil cooling box is fixedly connected to the surface of the oil cooling box. A water outlet pipe is fixedly connected to the right side of the water cooling box. A water inlet pipe is fixedly connected to the left side of the water cooling box.

[0012] Further, a convex frame is fixedly connected to the bottom of the cover plate. Insertion holes are formed at the four corners of the cover plate. Threaded holes are formed at the four corners of the top of the oil cooling box. Bolts are inserted into the four insertion holes.

[0013] Further, the bolts are threadedly connected to the threaded holes. The outer side of the convex frame is inserted into the inner side of the oil cooling box. The cover plate is fixedly connected to the oil cooling box through the bolts.

[0014] Further, the oil inlet pipe communicates with the oil cooling box. The S-shaped pipe communicates with both the oil outlet pipe and the first connecting pipe. The second connecting pipe communicates with the oil cooling box. A plurality of heat dissipation fins are fixedly connected to the outer sides of the four sides of the oil cooling box.

[0015] The present invention has the following beneficial effects:

[0016] (1) In the present invention, the oil pump pumps out the hot oil inside the oil cooling box through the oil inlet pipe, and then transports it to the S-shaped pipe through the oil outlet pipe. After the cooling oil flows into the S-shaped pipe, it is cooled by contacting the water flow inside the water cooling box, and the cooling effect can be quickly achieved. Subsequently, the cooling oil enters the housing through the first connecting pipe and then returns to the oil cooling box through the second connecting pipe. Such a cycle can quickly cool down the oil cooling box, avoid the situation that the cooling oil is too hot, and improve the heat dissipation effect of the transformer;

[0017] (2) In the present invention, when the motor is started to drive the elliptical disk to rotate slowly, the protruding position of the elliptical disk will push the fixed shaft, and the convex ring will drive the adjusting block to move forward, increasing the opening, improving the flow rate of the cooling oil, enabling the cooling oil to circulate quickly. When the protruding position of the elliptical disk moves away from the fixed shaft, the convex ring will slowly reset under the elastic action of the spring, reducing the opening and the flow rate, allowing the cooling oil to stay in the water cooling box for a longer time to improve the cooling effect.

[0018] (3) In the present invention, the water inlet pipe is connected to a water pipe to convey water flow into the water cooling box. Since the water flow in the water cooling box cools the hot oil in the S-shaped pipe, it will cause heat to be generated in the water flow in the water cooling box. The water flow in the water cooling box is discharged through the pipe connected to the right side of the water outlet pipe. This cycle can keep the water flow in the water cooling box always at a relatively cool temperature, facilitating the cooling of the oil in the S-shaped pipe.

[0019] Of course, it is not necessary for any product implementing the present invention to achieve all the above-mentioned advantages simultaneously. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following will briefly introduce the drawings required for describing the embodiments. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0021] Figure 1 is a schematic diagram of the overall structure of the present invention;

[0022] Figure 2 is a schematic diagram of the internal sectional structure of the water cooling box of the present invention;

[0023] Figure 3 is a schematic diagram of the right-side sectional structure of the housing of the present invention;

[0024] Figure 4 is the present invention Figure 3 enlarged schematic diagram of A in;

[0025] Figure 5 is a schematic diagram of the overall structure of the adjusting block of the present invention;

[0026] Figure 6 is a schematic diagram of the left-side structure of the oil cooling box of the present invention;

[0027] Figure 7 is a schematic diagram of the overall structure of the cover plate of the present invention.

[0028] In the drawings, the list of components represented by each reference numeral is as follows:

[0029] In the figure: 1. Oil cooling box; 11. Cover plate; 111. Convex frame; 112. Bolt; 12. Cooling component; 121. Water cooling box; 122. Base; 221. Support frame; 123. Outlet pipe; 124. Inlet pipe; 125. S-shaped pipe; 13. Heat sink; 14. Connecting pipe one; 141. Housing; 142. Adjusting block; 421. Opening; 422. Slide bar; 423. Convex ring; 424. Spring; 425. Fixed rod; 426. Connecting rod; 427. Fixed shaft; 143. Motor; 144. Elliptical disc; 145. Bracket; 15. Connecting pipe two; 2. Oil pump; 21. Inlet oil pipe; 22. Outlet oil pipe. Detailed implementation manners

[0030] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0031] Please refer to Figures 1-7 As shown, the present invention is an oil cooling device for an oil-immersed transformer, including an oil cooling box 1. A cover plate 11 is arranged on the top of the oil cooling box 1. Cooling components 12 are arranged in front of and behind the cover plate 11. The two cooling components 12 are symmetrically arranged with the oil cooling box 1 as the center. The cooling component 12 includes a water cooling box 121. Oil pumps 2 are fixedly connected to the front and back of the oil cooling box 1. The parts connected by the two oil pumps 2 are the same. The bottom oil inlet of the oil pump 2 is fixedly connected to an inlet oil pipe 21. The side of the inlet oil pipe 21 away from the oil pump 2 is fixedly connected to the surface of the oil cooling box 1. The top oil outlet of the oil pump 2 is fixedly connected to an outlet oil pipe 22;

[0032] Inside the water cooling box 121, there is an S-shaped pipe 125. Both the left and right sides of the S-shaped pipe 125 penetrate through the water cooling box 121 and extend to the outside. The top of the left side of the S-shaped pipe 125 is fixedly connected to the side of the oil outlet pipe 22 away from the oil pump 2. The top of the right side of the S-shaped pipe 125 is fixedly connected to a first connecting pipe 14. One side of the first connecting pipe 14 close to the oil cooling box 1 is fixedly connected to a housing 141. One side of the housing 141 close to the oil cooling box 1 is fixedly connected to a second connecting pipe 15. The side of the second connecting pipe 15 away from the housing 141 is fixedly connected to the oil cooling box 1. The oil pump 2 pumps out the hot oil inside the oil cooling box 1 through the oil inlet pipe 21, and then transports it to the S-shaped pipe 125 through the oil outlet pipe 22. After the cooling oil flows into the S-shaped pipe 125, it is cooled by contacting the water flow inside the water cooling box 121, which can quickly achieve the effect of temperature reduction. Subsequently, the cooling oil enters the housing 141 through the first connecting pipe 14 and returns to the oil cooling box 1 through the second connecting pipe 15. Such a cycle can quickly cool down the oil cooling box 1, avoid the situation of overheated cooling oil, and improve the heat dissipation effect of the transformer.

[0033] A regulating block 142 is slidably connected to the inner wall of the housing 141. A number of openings 421 are formed inside the regulating block 142. A sliding rod 422 is fixedly connected to the front surface of the regulating block 142. A convex ring 423 is fixedly connected to the outer surface of the sliding rod 422. A fixing rod 425 is fixedly connected to the top of the convex ring 423. A connecting rod 426 is fixedly connected to the top of the fixing rod 425. A fixing shaft 427 is fixedly connected to the top of the connecting rod 426. A motor 143 is fixedly connected to the top of the housing 141. The output end of the motor 143 at the bottom is fixedly connected to an elliptical disc 144. By starting the motor 143 to drive the elliptical disc 144 to rotate slowly, the protruding position of the elliptical disc 144 will push the fixing shaft 427, and the convex ring 423 will drive the regulating block 142 to move forward, increasing the opening 421 and improving the flow rate of the cooling oil, so that the cooling oil can circulate quickly. When the protruding position of the elliptical disc 144 moves away from the fixing shaft 427, the convex ring 423 will slowly reset under the elastic action of the spring 424, reducing the opening 421 and decreasing the flow rate, which can make the cooling oil stay in the water cooling box 121 longer to improve the cooling effect.

[0034] A bracket 145 is fixedly connected to the inner wall of the housing 141. The front of the sliding rod 422 penetrates through the bracket 145 and extends to the outside. The outer surface of the sliding rod 422 is slidably connected to the inner side of the bracket 145. A spring 424 is sleeved on the outer side of the sliding rod 422. One side of the spring 424 close to the convex ring 423 is fixedly connected to the surface of the convex ring 423, and the side of the spring 424 far from the convex ring 423 is fixedly connected to the surface of the bracket 145. After the protruding position of the elliptical disk 144 pushes the fixed shaft 427, the fixed shaft 427 drives the convex ring 423 to move forward through the connecting rod 426 and the fixed rod 425. At this time, the sliding rod 422 slides in the bracket 145, and at the same time, the convex ring 423 squeezes the spring 424, which is convenient for driving the adjusting block 142 to slowly reset under the elastic action of the spring 424 later.

[0035] The bracket 145 is triangularly arranged. The outer side of the elliptical disk 144 is in contact with the outer side of the fixed shaft 427. The front of the adjusting block 142 is conically arranged. The outer side of the adjusting block 142 is adapted to the inner wall of the second connecting pipe 15. When the opening 421 on the adjusting block 142 completely enters the inner wall of the housing 141, the housing 141 will be sealed. At this time, the cooling oil will not enter the second connecting pipe 15, and the cooling oil can always stay in the water cooling box 121.

[0036] A base 122 is fixedly connected to the bottom of the water cooling box 121. A plurality of support frames 221 are fixedly connected to the bottom of the base 122. One side of the support frames 221 close to the oil cooling box 1 is fixedly connected to the surface of the oil cooling box 1. An outlet pipe 123 is fixedly connected to the right side of the water cooling box 121, and an inlet pipe 124 is fixedly connected to the left side of the water cooling box 121. Connect the inlet pipe 124 to a water pipe to convey water flow into the water cooling box 121. Since the water flow in the water cooling box 121 cools the hot oil in the S-shaped pipe 125, it will cause the water flow in the water cooling box 121 to generate heat. The water flow in the water cooling box 121 is discharged through connecting a pipe to the right side of the outlet pipe 123. This cycle can keep the water flow in the water cooling box 121 always at a relatively cool temperature, which is convenient for cooling the oil in the S-shaped pipe 125.

[0037] A convex frame 111 is fixedly connected to the bottom of the cover plate 11. Insertion holes are opened at the four corners of the cover plate 11. Threaded holes are opened at the four corners of the top of the oil cooling box 1. Bolts 112 are inserted into the four insertion holes. Inject cooling oil into the oil cooling box 1, and then install the cover plate 11. The convex frame 111 at the bottom of the cover plate 11 is inserted into the top of the oil cooling box 1, and then the cover plate 11 and the oil cooling box 1 are fixed by the four bolts 112 to complete the installation.

[0038] The bolts 112 are threadedly connected to the threaded holes. The outer side of the convex frame 111 is inserted into the inner side of the oil cooling box 1. The cover plate 11 is fixedly connected to the oil cooling box 1 through the bolts 112. The convex frame 111 can play a role in positioning and stabilizing the cover plate 11, making the cover plate 11 more stable after installation, and at the same time, there will be no shaking or deviation, and the insertion holes and the threaded holes can be aligned smoothly.

[0039] The inlet pipe 21 communicates with the oil cooler 1. The S-shaped pipe 125 communicates with both the outlet pipe 22 and the first connecting pipe 14. The second connecting pipe 15 communicates with the oil cooler 1. A number of radiating fins 13 are fixedly connected to the four outer sides of the oil cooler 1. When the transformer generates heat, the cooling oil inside the oil cooler 1 dissipates the heat of the transformer. When the cooling oil gets overheated, the radiating fins 13 discharge some of the heat inside the oil cooler 1 to the external environment, playing the role of primary heat dissipation.

[0040] During use, install the transformer inside the oil cooler 1, then inject cooling oil into the oil cooler 1, and then install the cover plate 11. The convex frame 111 at the bottom of the cover plate 11 is inserted into the top of the oil cooler 1, and then the cover plate 11 is fixed to the oil cooler 1 through four bolts 112 to complete the installation. When the transformer generates heat, the cooling oil inside the oil cooler 1 dissipates the heat of the transformer. When the cooling oil gets overheated, the radiating fins 13 discharge some of the heat inside the oil cooler 1 to the external environment. At the same time, connect the water inlet pipe 124 to a water pipe to convey water flow into the water cooler 121. Start the oil pump 2 to pump out the hot oil inside the oil cooler 1 through the inlet pipe 21, and then convey it to the S-shaped pipe 125 through the outlet pipe 22. After the cooling oil flows into the S-shaped pipe 125, it is cooled by contacting the water flow inside the water cooler 121, which can quickly achieve the effect of temperature reduction. Then the cooling oil enters the housing 141 through the first connecting pipe 14 and is discharged into the second connecting pipe 15 from the opening 421 on the regulating block 142, and then flows back into the oil cooler 1. Such a cycle can quickly cool down the oil cooler 1, avoid the situation of overheated cooling oil, and improve the heat dissipation effect of the transformer. By connecting a pipe to the right side of the water outlet pipe 123 to discharge the water flow inside the water cooler 121, this cycle can keep the water flow inside the water cooler 121 always relatively cool;

[0041] By starting the motor 143 to drive the elliptical disk 144 to rotate slowly, the protruding position of the elliptical disk 144 will push the fixed shaft 427. The fixed shaft 427 drives the convex ring 423 to move forward through the connecting rod 426 and the fixed rod 425. At this time, the sliding rod 422 slides inside the bracket 145. At the same time, the convex ring 423 squeezes the spring 424, and the regulating block 142 also moves forward accordingly, increasing the opening 421 to improve the flow rate of the cooling oil, enabling the cooling oil to circulate quickly. When the protruding position of the elliptical disk 144 moves away from the fixed shaft 427, the convex ring 423 slowly resets under the elastic action of the spring 424, reducing the opening 421 and lowering the flow rate, which can make the cooling oil stay in the water cooler 121 longer to improve the cooling effect, and can adjust the position of the regulating block 142 according to different requirements to achieve a reasonable cooling effect.

[0042] The preferred embodiments of the present invention disclosed above are only used to help illustrate the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the invention to the specific embodiments described. Obviously, many modifications and variations can be made according to the content of this specification. These embodiments are selected and specifically described in this specification in order to better explain the principles and practical applications of the present invention, so that those skilled in the art can well understand and utilize the present invention. The present invention is only limited by the claims and their full scope and equivalents.

Claims

1. An oil cooling device for an oil-immersed transformer, comprising an oil cooling tank (1), a cover plate (11) is arranged at the top of the oil cooling tank (1), cooling components (12) are arranged in front of and behind the cover plate (11), the two cooling components (12) are symmetrically arranged with the oil cooling tank (1) as the center, the cooling component (12) includes a water cooling tank (121), oil pumps (2) are fixedly connected to the front and back surfaces of the oil cooling tank (1), the parts connected by the two oil pumps (2) are the same, an oil inlet pipe (21) is fixedly connected to the bottom oil inlet of the oil pump (2), one side of the oil inlet pipe (21) away from the oil pump (2) is fixedly connected to the surface of the oil cooling tank (1), an oil outlet pipe (22) is fixedly connected to the top oil outlet of the oil pump (2), and the feature is that ； Inside the water cooling box (121), there is an S-shaped pipe (125). Both the left and right sides of the S-shaped pipe (125) penetrate through the water cooling box (121) and extend to the outside. The top of the left side of the S-shaped pipe (125) is fixedly connected to one side of the oil outlet pipe (22) away from the oil pump (2). The top of the right side of the S-shaped pipe (125) is fixedly connected to a first connecting pipe (14). One side of the first connecting pipe (14) close to the oil cooling box (1) is fixedly connected to a housing (141). One side of the housing (141) close to the oil cooling box (1) is fixedly connected to a second connecting pipe (15). The side of the second connecting pipe (15) away from the housing (141) is fixedly connected to the oil cooling box (1).

2. The oil cooling device for an oil-immersed transformer according to claim 1, wherein: A regulating block (142) is slidably connected to the inner wall of the housing (141). A number of openings (421) are formed inside the regulating block (142). A sliding rod (422) is fixedly connected to the front of the regulating block (142). A convex ring (423) is fixedly connected to the outer surface of the sliding rod (422). A fixing rod (425) is fixedly connected to the top of the convex ring (423). A connecting rod (426) is fixedly connected to the top of the fixing rod (425). A fixing shaft (427) is fixedly connected to the top of the connecting rod (426). A motor (143) is fixedly connected to the top of the housing (141). The output end of the bottom of the motor (143) is fixedly connected to an elliptical disc (144).

3. The oil cooling device for an oil-immersed transformer according to claim 2, wherein: A bracket (145) is fixedly connected to the inner wall of the housing (141). The sliding rod (422) penetrates through the bracket (145) in front and extends to the outside. The outer surface of the sliding rod (422) is slidably connected to the inner side of the bracket (145). A spring (424) is sleeved on the outer side of the sliding rod (422). One side of the spring (424) close to the convex ring (423) is fixedly connected to the surface of the convex ring (423). One side of the spring (424) away from the convex ring (423) is fixedly connected to the surface of the bracket (145).

4. The oil cooling device for an oil-immersed transformer according to claim 3, characterized in that: The bracket (145) is triangularly arranged. The outer side of the elliptical disc (144) is in contact with the outer side of the fixing shaft (427). The front of the regulating block (142) is conically arranged. The outer side of the regulating block (142) is adapted to the inner wall of the second connecting pipe (15).

5. The oil cooling device for an oil-immersed transformer according to claim 4, characterized in that: A base (122) is fixedly connected to the bottom of the water cooling box (121). A number of support frames (221) are fixedly connected to the bottom of the base (122). One side of the support frames (221) close to the oil cooling box (1) is fixedly connected to the surface of the oil cooling box (1). An outlet pipe (123) is fixedly connected to the right side of the water cooling box (121). An inlet pipe (124) is fixedly connected to the left side of the water cooling box (121).

6. The oil cooling device for an oil-immersed transformer according to claim 4, wherein: A convex frame (111) is fixedly connected to the bottom of the cover plate (11). Jacks are opened at the four corners of the cover plate (11). Threaded holes are opened at the four corners of the top of the oil cooling box (1). Bolts (112) are inserted into the four jacks respectively.

7. An oil-cooling device for an oil-immersed transformer according to claim 6, characterized in that: The bolt (112) is threadedly connected to the threaded hole, the outer side of the convex frame (111) is inserted into the inner side of the oil cooling box (1), and the cover plate (11) is fixedly connected to the oil cooling box (1) by bolts (112).

8. The oil cooling device for an oil-immersed transformer according to claim 4, characterized in that: The inlet oil pipe (21) communicates with the oil cooling box (1), the S-shaped pipe (125) communicates with both the outlet oil pipe (22) and the first connecting pipe (14), the second connecting pipe (15) communicates with the oil cooling box (1), and a plurality of heat dissipation fins (13) are fixedly connected to the outer sides of the four sides of the oil cooling box (1).

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