A cooling liquid circulating device for a transformer

Abstract

The utility model provides a kind of cooling liquid circulating device for transformer heat dissipation, belong to transformer heat dissipation technical field, including cooling liquid pipeline, for carrying out heat dissipation to transformer, the cooling liquid pipeline includes liquid inlet pipeline, liquid outlet pipeline and the multiple branch pipelines of connecting the liquid inlet pipeline and the liquid outlet pipeline;Control component is arranged on the cooling liquid pipeline, for controlling the on-off of any branch pipeline and at least one branch pipeline communication. A kind of cooling liquid circulating device for transformer heat dissipation in the utility model, solve the problem that there is no simple, low-cost and small volume cooling liquid residence time controllable cooling liquid circulating device for transformer heat dissipation in prior art.

Description

Technical Field

[0001] This utility model belongs to the field of transformer heat dissipation technology, and specifically relates to a coolant circulation device for transformer heat dissipation. Background Technology

[0002] As a critical infrastructure element of modern power grids, the proper operation of transformers is essential for the safety of the entire grid. During transformer operation, heat generated by internal losses is the primary cause of transformer temperature rise. Prolonged high-temperature operation can damage the transformer's insulation materials, thereby reducing its service life. Furthermore, relying solely on the transformer's own cooling methods is insufficient to achieve thermal equilibrium; therefore, external cooling methods are necessary to lower the transformer's temperature and ensure its safe operation.

[0003] Existing transformer cooling devices typically achieve heat dissipation by setting up a circulating coolant system. Specifically, this is achieved by setting up cooling pipes that directly contact the transformer's heat sinks or exchange heat with the air inside the transformer box. To ensure full utilization of the coolant, that is, to ensure that the heat absorbed by the coolant mainly comes from the transformer rather than the external environment during transportation, the coolant pipes are usually designed to be long and curved to increase the residence time of the coolant inside the transformer. This residence time is then controlled by adjusting the speed of the pump.

[0004] However, the curved design of coolant pipes requires significant space, and the coolant residence time varies depending on the season and external conditions. This necessitates adjusting the coolant residence time by changing the pump's speed to ensure optimal coolant utilization. However, the significant differences in residence time between different speeds make accurate control difficult. Multi-speed or non-speed pumps are expensive, and due to the considerable length of the curved coolant pipes, even non-speed pumps require multiple adjustments to ensure precise residence time control, making the operation cumbersome. Utility Model Content

[0005] Based on this, the purpose of this utility model is to provide a coolant circulation device for transformer heat dissipation, aiming to solve the problem in the prior art of lacking a simple, low-cost, and small-sized coolant circulation device with controllable coolant residence time for transformer heat dissipation.

[0006] This utility model proposes a coolant circulation device for transformer heat dissipation, characterized in that it includes: A coolant pipeline is used to dissipate heat from the transformer. The coolant pipeline includes an inlet pipeline, an outlet pipeline, and multiple branch pipelines connecting the inlet pipeline and the outlet pipeline. A control component is disposed on the coolant pipeline for controlling the on / off state of any of the branch pipelines and enabling at least one of the branch pipelines to be connected.

[0007] The aforementioned coolant circulation device for transformer cooling comprises an inlet pipe, branch pipes, and an outlet pipe interconnected to form a coolant pipeline. This allows coolant to flow into or out of the coolant pipeline, enabling direct contact between the coolant and the transformer for heat dissipation, or heat exchange with the internal air of the transformer. Furthermore, a control component manages the opening and closing of the branch pipes, ensuring continuous coolant flow within the main coolant pipeline while retaining a portion of the coolant within the branch pipes for continuous heat dissipation. This simple and direct control of coolant residence time ensures optimal coolant utilization. The branch pipe opening and closing control is simple and direct, eliminating the need for an expensive pump, achieving low-cost control, and eliminating the need for bends in the coolant pipeline, resulting in a smaller overall size. Therefore, this invention solves the problem of the lack of a simple, low-cost, and compact coolant circulation device for transformer cooling with controllable coolant residence time in the prior art.

[0008] In addition, the coolant circulation device for transformer heat dissipation proposed in this utility model may also have the following additional technical features: Preferably, the coolant pipeline includes two branch pipelines, and the control component includes an on / off component and an interlocking component. The on / off component includes ball valves respectively disposed at both ends of the branch pipelines, and multiple interlocking components are respectively connected to the two ball valves at the same end, so that one ball valve is closed while the other ball valve is opened.

[0009] Preferably, the outer side of the ball valve is provided with a gear connected to the valve core, and the linkage component includes an automatic telescopic rod, a horizontal plate connected to the automatic telescopic rod, and a vertical plate connected to the horizontal plate. The two ends of the vertical plate are provided with racks adapted to the gear.

[0010] Preferably, the cooling pipe is further provided with a stirring assembly, which includes a drive shaft and stirring paddles disposed on both sides of the drive shaft. The two stirring paddles are respectively disposed in two branch pipes. When the stirring paddle on one side rotates, it will drive the stirring paddle on the other side to rotate through the drive shaft.

[0011] Preferably, the stirring paddle includes two parallel circular plates and a blade disposed between the two circular plates, wherein the two ends of the blade are perpendicular to the circular plates.

[0012] Preferably, the stirring paddle has a guide block located in the branch pipe at one end near the liquid inlet pipe, and the cross-sectional area of ​​the guide block gradually increases from one side near the liquid inlet pipe to the other side.

[0013] Preferably, the plurality of the stirring paddles and the guide blocks are equidistantly distributed within the branch pipeline along the length of the branch pipeline.

[0014] Preferably, the linkage component further includes a guide rod, the two ends of which are respectively connected to the two branch pipes, and the cross plate is provided with a guide groove adapted to the guide rod.

[0015] Preferably, the coolant pipeline includes a three-way valve, which is used to connect the ball valve section to the inlet pipeline or the outlet pipeline, and the ball valve section is connected to the branch pipeline through a bend.

[0016] Preferably, heat dissipation fins are provided on the outer side of the branch pipe, and a plurality of heat dissipation fins are equidistantly arranged along the length direction of the branch pipe. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of a transformer cooling liquid circulation device according to one embodiment of the present invention; Figure 2 for Figure 1 A structural diagram from another perspective; Figure 3 for Figure 1 A schematic diagram of the structure of a branch pipeline after it has been vertically cut; Figure 4 This is a schematic diagram of the on / off component proposed in one embodiment of the present invention; Figure 5 for Figure 1 A schematic diagram of the structure of a central branch pipeline after it has been horizontally cut; Explanation of key component symbols:

[0018] The following detailed description, in conjunction with the accompanying drawings, will further illustrate this utility model. Detailed Implementation

[0019] To facilitate understanding of this utility model, a more complete description will be given below with reference to the accompanying drawings. Several embodiments of this utility model are shown in the drawings. However, this utility model can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided so that the disclosure of this utility model will be more thorough and complete.

[0020] It should be noted that when a component is said to be "fixed to" another component, it can be directly on the other component or there may be an intervening component. When a component is said to be "connected to" another component, it can be directly connected to the other component or there may be an intervening component. The terms "vertical," "horizontal," "left," "right," and similar expressions used in this document are for illustrative purposes only.

[0021] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0022] Please see Figures 1 to 5 The image shows a transformer cooling fluid circulation device according to an embodiment of the present invention. The cooling fluid pipe 10 is used to dissipate heat from the transformer. The cooling fluid pipe 10 includes an inlet pipe 11, an outlet pipe 12, and multiple branch pipes 13 connecting the inlet pipe 11 and the outlet pipe 12. The control component 20 is disposed on the coolant pipe 10 and is used to control the opening and closing of any branch pipe 13 and to connect at least one branch pipe 13.

[0023] Understandably, a coolant pipeline 10 is formed by interconnecting the inlet pipe 11, branch pipe 13, and outlet pipe 12. Coolant flows into or out of the coolant pipeline 10, allowing it to directly contact the transformer for heat dissipation or exchange heat with the internal air of the transformer. Furthermore, a control component 20 controls the opening and closing of the branch pipe 13, ensuring continuous flow of coolant within the coolant pipeline 10 while retaining a portion of the coolant in the branch pipe for continuous heat dissipation. This simple and direct control of the coolant's residence time ensures optimal coolant utilization. The branch pipe 13's on / off control is simple and direct, eliminating the need for an additional, costly pump, achieving low-cost control. It also eliminates the need for bends in the coolant pipeline 10, resulting in a smaller overall size. Therefore, this invention solves the problem of the lack of a simple, low-cost, and compact coolant circulation device for transformer cooling with controllable residence time in the prior art.

[0024] It should be noted that in actual implementation, a heat dissipation pipe is set up, and the residence time of coolant in a heat dissipation pipe can be controlled by controlling the valve and the switch of the liquid pump. However, this requires additional control of the liquid pump to frequently switch on and off, which affects the service life of the liquid pump. Moreover, the start and stop of the liquid pump will cause fluctuations in the flow rate of coolant, which in turn leads to insufficient stability and accuracy in the control of coolant flow efficiency and coolant residence. By setting up multiple branch pipes 13, controlling the opening and closing of different branch pipes 13, and ensuring the continuous connection of one branch pipe 13, the situation of the liquid pump constantly starting and stopping can be effectively avoided. Furthermore, by setting up multiple branch pipes 13 and controlling the size of each branch pipe 13, the effect of continuously injecting coolant into the branch pipes 13 in sequence can be achieved. That is, after the coolant is injected into the last branch pipe 13, the coolant in the first branch pipe 13 stays for a sufficient time. At this time, the last branch pipe 13 is cut off, and the first branch pipe 13 is connected, so that the coolant flows into the first branch pipe 13 and replaces the coolant in the first branch pipe 13.

[0025] Specifically, the coolant pipeline 10 includes two branch pipelines 13, and the control component 20 includes an on / off component 21 and an interlocking component 22. The on / off component 21 includes ball valve sections 211 respectively disposed at both ends of the branch pipeline 13. Multiple interlocking components 22 are respectively connected to two ball valve sections 211 at the same end, so that closing one ball valve section 211 simultaneously opens the other ball valve section 211. In actual use, setting two branch pipelines 13 can meet the current transformer's heat dissipation requirements and ensure sufficient utilization of coolant. Therefore, the design of two branch pipelines 13 can be adopted in specific implementation. Furthermore, by setting the interlocking component 22 and the on / off component 21, the interlocking component 22 can be individually controlled, thereby automatically controlling the separate opening and closing of the two branch pipelines 13. That is, controlling the opening of one branch pipeline 13 simultaneously closes the other branch pipeline 13, thus avoiding the need to set up multiple high-cost electric valves for separate control, reducing costs. Alternatively, it avoids the need to open and close each independent manual valve separately, improving efficiency.

[0026] Additionally, a gear 212 is provided on the outer side of the ball valve section 211, which is connected to the valve core 213. The linkage component 22 includes an automatic telescopic rod 221, a horizontal plate 222 connected to the automatic telescopic rod 221, and a vertical plate 223 connected to the horizontal plate 222. Racks 224 adapted to the gear 212 are provided at both ends of the vertical plate 223. In specific implementation, by controlling the extension and retraction of the automatic telescopic rod 221, the horizontal plate 222 is moved back and forth, which in turn moves the vertical plate 223 back and forth. This causes the two racks 224 to move back and forth relative to the gear 212, thereby achieving different rotation directions of the gear 212 at the same end of different branch pipes 13. This means that the ball valve section 211 at the same end is either closed or connected, thus achieving the function of controlling one branch pipe 13 to connect while simultaneously closing another branch pipe 13.

[0027] Specifically, the cooling pipe is also equipped with a stirring assembly 30, which includes a drive shaft 31 and stirring paddles 32 disposed on both sides of the drive shaft 31. The two stirring paddles 32 are respectively disposed in two branch pipes 13. The rotation of one stirring paddle 32 will drive the other stirring paddle 32 to rotate through the drive shaft 31. In specific implementation, by setting up the stirring assembly 30, the coolant in the connected branch pipe 13 continues to flow, driving the stirring paddle 32 to rotate, which in turn drives the stirring paddle 32 in the cut-off branch pipe 13 to rotate. This drives the coolant in the cut-off branch pipe 13 to carry out efficient heat exchange, thereby improving cooling efficiency. While ensuring full utilization of the coolant, it reduces unnecessary residence time of the coolant, further improving the cooling effect. Furthermore, in specific implementations, this effect can be achieved by fixing the agitator 32 to the drive shaft 31, and rotating and sealing the drive shaft 31 to the branch pipe 13. Alternatively, the drive shaft 31 can be configured as a sleeve structure, with the outer sleeve of the drive shaft 31 fixedly connected to the branch pipe 13, and the inner sleeve of the drive shaft 31 fixedly connected to the two agitators 32 and rotating and sealingly connected to the outer sleeve. The specific structure is not limited here, and any result of implementing this function is within the protection scope of this solution.

[0028] Furthermore, the agitator 32 includes two parallel circular plates 321 and a blade 322 disposed between the two circular plates 321, with both ends of the blade 322 perpendicular to the circular plates 321. In specific implementations, by setting the blade 322 perpendicular to the circular plates 321, the flow direction of the coolant is directly opposite to the blade 322, thereby improving the driving effect of the coolant and reducing the obstruction effect of the blade 322 on the coolant, thus further ensuring the flow velocity of the coolant and guaranteeing the cooling effect.

[0029] Specifically, the agitator 32 has a guide block 33 located within the branch pipe 13 at one end near the inlet pipe 11. The cross-sectional area of ​​the guide block 33 gradually increases from the side near the inlet pipe 11 to the other side. In practice, by setting the guide block 33, the coolant flows towards the agitator 32, controlling the rotation direction of the agitator 32 and ensuring its continuous stability, thereby guaranteeing the mixing effect and ensuring rapid heat dissipation of the coolant. Furthermore, multiple agitators 32 and guide blocks 33 are equidistantly distributed within the branch pipe 13 along its length. The arrangement of multiple agitators 32 and guide blocks 33 achieves multi-point and uniform mixing of the coolant within the branch pipe 13, ensuring uniform heat dissipation of the coolant.

[0030] Additionally, the linkage component 22 also includes a guide rod 225, with both ends of the guide rod 225 connected to two branch pipes 13 respectively. The horizontal plate 222 is provided with a guide groove 226 adapted to the guide rod 225. In specific implementation, the guide rod 225 is set to guide, limit, and support the movement of the horizontal plate 222, preventing the rack 224 from shaking and affecting the normal opening or closing function of the ball valve 211.

[0031] Specifically, the coolant pipeline 10 includes a three-way valve 14, which connects the ball valve section 211 to the inlet pipeline 11 or the outlet pipeline 12. The ball valve section 211 is connected to the branch pipeline 13 via a bend section 15. In practical implementation, the three-way valve 14 connects the branch pipeline 13 to the inlet pipeline 11 and the outlet pipeline 12, and the bend section 15 buffers and guides the flow of coolant, preventing the coolant from directly impacting the pipeline and affecting the flow efficiency and stability of the coolant.

[0032] Additionally, heat dissipation fins 16 are provided on the outer side of the branch pipe 13, with multiple heat dissipation fins 16 evenly spaced along the length of the branch pipe 13. In practical implementation, the heat exchange area of ​​the branch pipe 13 is further increased by the additional heat dissipation fins 16 to improve the heat dissipation effect, thereby improving the heat dissipation efficiency of the coolant circulation device for transformer cooling.

[0033] In summary, the transformer cooling fluid circulation device described in the above embodiments of this utility model forms a cooling fluid pipeline 10 through interconnected inlet pipe 11, branch pipe 13, and outlet pipe 12. This allows coolant to flow into or out of the cooling fluid pipeline 10, enabling direct contact between the cooling fluid pipeline 10 and the transformer for heat dissipation, or heat exchange with the internal air of the transformer for heat dissipation. Furthermore, by setting a control component 20 to control the on / off state of the branch pipe 13, a portion of the coolant is retained in the branch pipe for continuous heat dissipation while ensuring continuous flow of coolant within the cooling fluid pipeline 10. This simple and direct control of the coolant residence time ensures efficient utilization of the coolant. Moreover, the on / off control of the branch pipe 13 is simple and direct, eliminating the need for an additional high-cost pump, achieving low-cost control, and eliminating the need for bends in the cooling fluid pipeline 10, resulting in a smaller size. Therefore, this utility model solves the problem of the lack of a simple, low-cost, and compact transformer cooling fluid circulation device with controllable coolant residence time in the prior art.

[0034] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0035] The embodiments described above are merely illustrative of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of this utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A coolant circulation device for transformer heat dissipation, characterized in that, include Coolant pipes are used to dissipate heat from the transformer. The coolant pipes include an inlet pipe, an outlet pipe, and multiple branch pipes connecting the inlet pipe and the outlet pipe. A control component, disposed on the coolant pipeline, is used to control the on / off state of any of the branch pipelines and to connect at least one of the branch pipelines.

2. The transformer cooling fluid circulation device according to claim 1, characterized in that, The coolant pipeline includes two branch pipelines, and the control component includes an on / off component and an interlocking component. The on / off component includes ball valves respectively disposed at both ends of the branch pipelines, and multiple interlocking components are respectively connected to the two ball valves at the same end, so that one ball valve is closed while the other ball valve is opened.

3. The transformer cooling fluid circulation device according to claim 2, characterized in that, The outer side of the ball valve is provided with a gear connected to the valve core. The linkage component includes an automatic telescopic rod, a horizontal plate connected to the automatic telescopic rod, and a vertical plate connected to the horizontal plate. The two ends of the vertical plate are provided with racks adapted to the gear.

4. A coolant circulation device for transformer heat dissipation according to claim 2, characterized in that, The cooling pipe is also equipped with a stirring assembly, which includes a drive shaft and stirring paddles disposed on both sides of the drive shaft. The two stirring paddles are respectively disposed in two branch pipes. When the stirring paddle on one side rotates, it will drive the stirring paddle on the other side to rotate through the drive shaft.

5. A coolant circulation device for transformer heat dissipation according to claim 4, characterized in that, The stirring paddle includes two parallel circular plates and a blade disposed between the two circular plates, with both ends of the blade perpendicular to the circular plates.

6. A coolant circulation device for transformer heat dissipation according to claim 5, characterized in that, The stirring paddle is provided with a guide block located in the branch pipe at one end near the liquid inlet pipe, and the cross-sectional area of ​​the guide block gradually increases from the side near the liquid inlet pipe to the other side.

7. A coolant circulation device for transformer heat dissipation according to claim 6, characterized in that, The plurality of the stirring paddles and the guide blocks are equidistantly distributed within the branch pipeline along the length of the branch pipeline.

8. A coolant circulation device for transformer heat dissipation according to claim 3, characterized in that, The linkage component also includes a guide rod, the two ends of which are respectively connected to the two branch pipes, and the horizontal plate is provided with a guide groove adapted to the guide rod.

9. A coolant circulation device for transformer heat dissipation according to claim 2, characterized in that, The coolant pipeline includes a three-way valve, which is used to connect the ball valve section to the inlet pipeline or the outlet pipeline. The ball valve section is connected to the branch pipeline through a bend.

10. A coolant circulation device for transformer heat dissipation according to any one of claims 1 to 9, characterized in that, The branch pipe is provided with heat dissipation fins on its outer side, and multiple heat dissipation fins are equidistantly arranged along the length of the branch pipe.

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