Cooling assembly of oil immersed transformer
By setting up composite pipes inside the oil-immersed transformer and step-by-step heat exchange is performed using the flow of gas and liquid, the problem that traditional heat dissipation structure cannot reduce the oil temperature is solved, and the working adaptability of the transformer in high-temperature areas is improved.
Patent Information
- Application Number
- CN202420081185.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-01-12
- Publication Date
- 2025-01-03
- Estimated Expiration
- 2034-01-12
AI Technical Summary
The heat dissipation structure of traditional oil-immersed transformers cannot effectively reduce the temperature of the oil inside the transformer and cannot meet the working needs in high-temperature areas.
A cooling component of an oil-immersed transformer is designed, using a composite pipeline inside the transformer. Cooling gas is circulated in the first pipeline and cooling liquid is circulated in the second pipeline. Through the flow of gas and liquid, it directly acts on the cooling oil and liquid. The warning value adjustment of the oil pillow achieves the step heat exchange effect.
It effectively reduces the temperature of the internal cooling oil of the transformer, making the oil-immersed transformer more suitable for working environments in high-temperature areas.
Smart Images
Figure CN222300417U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of transformers, in particular to a cooling component for an oil-immersed transformer. Background Art
[0002] The structure of the oil-immersed transformer is that the iron core of the transformer is placed in the cooling oil in the oil tank. When working, it relies on the cooling oil inside the transformer to achieve insulation and heat dissipation. During the normal operation of the transformer, the temperature of the oil will rise. At this time, the cooling oil will enter the oil pillow according to the phenomenon of thermal expansion and contraction. When the temperature of the oil in the transformer drops, the oil in the oil pillow will flow back to the transformer.
[0003] In order to make oil-immersed transformers more suitable for high-temperature areas, the cooling system of the transformer needs to be reformed. The heat sink of the traditional oil-immersed transformer flows the oil inside the transformer into the external cooling fins or pipes to exchange heat with the external gas, but the oil temperature inside the transformer is still at a relatively high value. This heat dissipation structure can no longer meet the working requirements of the oil-immersed transformer in high-temperature places. Utility Model Content
[0004] In view of the deficiencies in the prior art, the utility model provides an oil-immersed transformer cooling component, which solves the problem that the existing oil-immersed transformer heat dissipation structure has poor heat dissipation effect and cannot meet the working requirements of the oil-immersed transformer in high-temperature places.
[0005] To achieve the above purpose, the utility model is implemented through the following technical solutions: an oil-immersed transformer cooling component, comprising:
[0006] Transformer housing;
[0007] The transformer housing is connected to an oil pillow, and the oil pillow has a first warning value and a second warning value;
[0008] A pipeline is arranged in the transformer housing and placed in the cooling oil of the transformer housing, and both ends of the pipeline extend out of the transformer housing. The pipeline includes:
[0009] a first pipeline, in which a first cooling medium flows;
[0010] a second pipeline, in which a second cooling medium flows;
[0011] Wherein, when the oil pillow is at the first warning value, the first cooling medium in the first pipeline circulates; when the oil pillow is at the second warning value, the second cooling medium in the second pipeline circulates.
[0012] Preferably, the second pipeline is arranged in the first pipeline, and the first cooling medium and the second cooling medium do not contact each other.
[0013] Preferably, the portion of the pipeline extending out of the transformer housing is provided with a pipe opening, the pipe opening comprises a first pipe opening formed at the end of the first pipeline and a second pipe opening formed at the end of the second pipeline, and the second pipe opening penetrates the outer wall surface of the first pipeline.
[0014] Preferably, the outer diameter of the second pipeline is smaller than the inner diameter of the first pipeline, so that a gap cavity is left between the second pipeline and the first pipeline.
[0015] Preferably, a plurality of fins are formed on the outer wall surface of the second pipeline, and the plurality of fins divide the gap cavity into a plurality of diversion cavities.
[0016] Preferably, the two first pipe openings are respectively connected with a supply device A and a recovery device A for the first cooling medium, wherein the first cooling medium is driven by the supply device A to flow in the first pipeline and is recovered by the recovery device A;
[0017] The two second pipe openings are respectively connected to a supply device B and a recovery device B for a second cooling medium, wherein the second cooling medium is driven by the supply device B to flow in the second pipeline and is recovered by the recovery device B.
[0018] Preferably, the supply device A is a gas conveyor, and the recovery device B is an exhaust piece.
[0019] Preferably, the supply device B is a liquid conveyor, and the recovery device A is a heat exchanger and a liquid tank.
[0020] Preferably, the pipe is repeatedly bent and coiled around the inner cavity of the transformer housing.
[0021] Preferably, the outer wall surface of the first pipeline is fixed to the box body through a supporting structure;
[0022] The supporting structure is a supporting plate. Beneficial Effects
[0023] By using an oil-immersed transformer cooling component provided by the utility model, a composite pipeline is preset in the oil inside the transformer, cooling gas flows in the first pipeline, and cooling liquid flows in the second pipeline. The flow of gas and liquid directly acts on the cooling oil inside the transformer, and the high temperature in the cooling oil is directly taken away. When used in conjunction with an oil pillow, the temperature of the cooling oil inside the transformer can be adjusted when the oil pillow reports a first warning value and a second warning value, so that the oil-immersed transformer is more suitable for operation in high-temperature areas. BRIEF DESCRIPTION OF THE DRAWINGS
[0024] Figure 1 This is a schematic diagram of the appearance and structure of the oil-immersed transformer of the utility model;
[0025] Figure 2 This is a schematic diagram of the pipeline structure of the utility model;
[0026] Figure 3 This is a schematic diagram of the pipe orifice structure of the pipeline of the utility model;
[0027] Figure 4 For this utility model Figure 3 Left view of the middle pipe opening;
[0028] Figure 5 For this utility model Figure 3 Schematic diagram of AA in the middle.
[0029] Explanation of symbols in the figure
[0030] 1. Transformer housing, 2. Oil pillow, 3. Pipeline, 31. First pipeline, 311. First pipe opening, 32. Second pipeline, 321. Second pipe opening, 322. Fin, 33. Gap cavity, 34. Diverter cavity. DETAILED DESCRIPTION
[0031] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. As long as the effect of the utility model can be exerted, various changes can be made to the implementation scheme.
[0032] By those skilled in the art, the components in this case are connected in sequence. The specific connection and operation sequence should refer to the following working principle. The detailed connection means are well-known technologies in the art. The following mainly introduces the working principle and process.
[0033] Reference Figure 1-5 The oil-immersed transformer cooling assembly of this implementation scheme is described;
[0034] Specific as Figure 1 As shown, it includes a transformer housing 1; the transformer housing 1 is connected to an oil pillow 2.
[0035] In this embodiment, the oil pillow 2 has a first warning value and a second warning value; during implementation, the cooling oil in the transformer housing 1 shrinks due to heat, and the cooling oil inside it will flow into the oil pillow 2 when the transformer is at a high temperature. When this embodiment is implemented, a liquid level sensor is set in the oil pillow 2, and two liquid level heights of the cooling oil in the oil pillow 2 are set by the liquid level sensor to form a first warning value and a second warning value.
[0036] The pipe 3 is arranged in the transformer housing 1 and placed in the cooling oil of the transformer housing 1. It should be noted that the top of the pipe 3 is preferably immersed in the cooling oil. The specific shape of the pipe 3 is that the pipe 3 is repeatedly bent and coiled around the inner cavity of the transformer housing 1 to ensure that it has the largest contact area with the cooling oil.
[0037] Both ends of the pipeline 3 extend out of the transformer housing 1, and the pipeline 3 includes a first pipeline 31 and a second pipeline 32. When implementing the pipeline 3, if the pipeline 3 is a multi-section pipeline installed in combination, the first pipeline 31 and the second pipeline 32 are made of metal materials such as stainless steel or copper. After the second pipeline 32 is installed in each section of the first pipeline 31, the second pipeline 32 is first connected, and then the first pipeline 31 on the outside is connected; if the pipeline 3 is an integrally formed and bent pipeline, the first pipeline 31 is made of metal materials such as stainless steel or copper, and the second pipeline 32 is a flexible pipeline, so that it is easy to penetrate into and lead out of the second pipeline 32.
[0038] The outer wall surface of the first pipeline 31 is fixed on the box body through a supporting structure; the supporting structure is a supporting plate. The supporting plate is a connecting piece such as a pin and a connecting plate.
[0039] In one embodiment, a first cooling medium flows through the first pipeline 31 ; a second cooling medium flows through the second pipeline 32 ; specifically, the first cooling medium is gas, and the second cooling medium is liquid.
[0040] Among them, when the oil pillow 2 is at the first warning value, the first cooling medium in the first pipeline 31 circulates; when the oil pillow is at the second value, the second cooling medium in the second pipeline 32 circulates. In the specific implementation process, when the oil pillow 2 is at the first warning value, the gas is first made to flow in the first pipeline 31, so that the high-temperature cooling oil exchanges heat with the gas in the first pipeline 31, and the heat is carried and dissipated through the flow of the gas. When the oil pillow 2 is at the second warning value, the liquid flows in the second pipeline 32 at this time, and the hot gas formed by the gas flowing in the first pipeline 31 after heat exchange exchanges heat with the second pipeline 32 to reduce the temperature of the gas. The gas temperature continues to exchange heat with the cooling oil outside the first pipeline 31 while flowing, realizing an advanced step-by-step heat exchange effect, strengthening the cooling effect of the cooling oil in the transformer, and making the oil-immersed transformer of the present application more suitable for high temperature areas.
[0041] During implementation, the situation that will occur is that when the liquid in the second pipeline 32 flows, condensed water will condense on its outer wall, and when the first cooling medium in the first pipeline 31 flows, the airflow will blow on the outer wall of the second pipeline 32 to carry the condensed water away, so there will be no situation in which water accumulates for a long time and the first pipeline 31 is blocked.
[0042] It should be noted that the second pipeline 32 is disposed in the first pipeline 31, and the first cooling medium and the second cooling medium do not contact each other.
[0043] The portion of the pipeline 3 extending out of the transformer housing 1 is provided with a pipe opening, which includes a first pipe opening 311 formed at the end of the first pipeline 31 and a second pipe opening 321 formed at the end of the second pipeline 32 . The second pipe opening 321 penetrates the outer wall of the first pipeline 31 .
[0044] It should be noted that the outer diameter of the second pipeline 32 is smaller than the inner diameter of the first pipeline 31 , so that a gap cavity 33 is left between the second pipeline 32 and the first pipeline 31 .
[0045] In a further embodiment, a plurality of fins 322 are formed on the outer wall of the second pipeline 32 , and the plurality of fins 322 divide the gap cavity 33 into a plurality of flow-dividing cavities 34 . The first cooling medium flows in the flow-dividing cavities 34 .
[0046] In another optimized embodiment, the two first pipe openings 311 are respectively connected to a supply device A and a recovery device A for the first cooling medium, wherein the first cooling medium is driven by the supply device A to flow in the first pipeline 31 and is recovered by the recovery device A.
[0047] The two second pipe openings 321 are respectively connected to a supply device B and a recovery device B for the second cooling medium, wherein the second cooling medium is driven by the supply device B to flow in the second pipeline 32 and is recovered by the recovery device B.
[0048] Optionally, the supply device A is a gas conveyor, and the recovery device B is an exhaust member. The supply device B is a liquid conveyor, and the recovery device A is a heat exchanger and a liquid tank.
[0049] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.
Claims
1. An oil-immersed transformer cooling component, characterized in that: include: Transformer housing (1); The transformer housing (1) is connected to an oil pillow (2), and the oil pillow (2) has a first warning value and a second warning value; A pipeline (3) is arranged in the transformer housing (1) and placed in the cooling oil of the transformer housing (1), with both ends of the pipeline (3) extending out of the transformer housing (1). The pipeline (3) comprises: A first pipeline (31), wherein a first cooling medium flows through the first pipeline (31); a second pipeline (32), wherein a second cooling medium flows in the second pipeline (32); When the oil pillow (2) is at a first warning value, a first cooling medium in the first pipeline (31) circulates; and when the oil pillow is at a second warning value, a second cooling medium in the second pipeline (32) circulates.
2. The oil-immersed transformer cooling assembly according to claim 1, characterized in that: The second pipeline (32) is arranged in the first pipeline (31), and the first cooling medium and the second cooling medium do not contact each other.
3. The oil-immersed transformer cooling assembly according to claim 2, characterized in that: The portion of the pipeline (3) extending out of the transformer housing (1) is provided with a pipe opening, the pipe opening comprising a first pipe opening (311) formed at the end of the first pipeline (31) and a second pipe opening (321) formed at the end of the second pipeline (32), the second pipe opening (321) penetrating the outer wall surface of the first pipeline (31).
4. The oil-immersed transformer cooling assembly according to claim 3, characterized in that: The outer diameter of the second pipeline (32) is smaller than the inner diameter of the first pipeline (31), so that a gap cavity (33) is left between the second pipeline (32) and the first pipeline (31).
5. The oil-immersed transformer cooling assembly according to claim 4, characterized in that: A plurality of fins (322) are formed on the outer wall surface of the second pipeline (32), and the plurality of fins (322) divide the gap cavity (33) into a plurality of flow-dividing cavities (34).
6. The oil-immersed transformer cooling assembly according to claim 3, characterized in that: The two first pipe openings (311) are respectively connected to a supply device A and a recovery device A for a first cooling medium, wherein the first cooling medium is driven by the supply device A to flow in the first pipeline (31) and is recovered by the recovery device A; The two second pipe openings (321) are respectively connected to a supply device B and a recovery device B for a second cooling medium, wherein the second cooling medium is driven by the supply device B to flow in the second pipeline (32) and is recovered by the recovery device B.
7. The oil-immersed transformer cooling assembly according to claim 6, characterized in that: The supply device A is a gas conveyor, and the recovery device B is an exhaust member.
8. The oil-immersed transformer cooling assembly according to claim 6, characterized in that: The supply device B is a liquid conveyor, and the recovery device A is a heat exchanger and a liquid tank.
9. The oil-immersed transformer cooling assembly according to claim 1, characterized in that: The pipe (3) is repeatedly bent and coiled around the inner cavity of the transformer housing (1).
10. The oil-immersed transformer cooling assembly according to claim 1, characterized in that: The outer wall surface of the first pipeline (31) is fixed to the box body via a supporting structure; The supporting structure is a supporting plate.