Separation oil guide device for oil-immersed transformer
By designing a cyclone oil guide channel and a scattered oil guide channel in an oil-immersed transformer, the heat exchange time between the thermal oil and the coil is extended, and impurities are separated by cyclone centrifugal force, the insufficient heat exchange time and impurities of the thermal oil are solved. The impact of the problem achieves more efficient heat dissipation and longer equipment life.
Patent Information
- Application Number
- CN202421100409.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-20
- Publication Date
- 2025-01-07
- Estimated Expiration
- 2034-05-20
AI Technical Summary
In existing oil-immersed transformers, the heat exchange time between the thermal oil and the coil is insufficient, resulting in poor heat dissipation and cooling effect. At the same time, the impurities in the thermal oil will wear the coil and other components, affecting the life of the equipment.
A separation oil conduction device is designed. By setting a cyclonic oil conduction channel and a deflection oil conduction channel in the heat dissipation part, the heat exchange time between the thermal oil and the coil is extended, and impurities are separated and deposited by cyclone centrifugal force to ensure heat conduction. Oil cleaning.
It effectively extends the heat exchange time between the thermally conductive oil and the coil, ensures that the coil is fully heat dissipated, and extends the service life of the oil-immersed transformer by separating impurities.
Smart Images
Figure CN222319921U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of transformer heat dissipation and relates to a separation oil guide device for an oil-immersed transformer. Background Art
[0002] In the existing power transmission technology, oil-immersed transformers are one of the most commonly used transformers. The transformer box is filled with thermal oil. The vertical temperature difference inside the transformer box allows the thermal oil to circulate from bottom to top. The thermal oil circulates between the coil and the heat sink to dissipate heat and cool the coil.
[0003] However, in the existing oil-immersed transformer, the heat exchange distance between the heat transfer oil and the coil is limited, resulting in insufficient heat exchange time between the heat transfer oil and the coil, thereby reducing the heat dissipation and cooling effect of the coil. At the same time, after long-term use, the existing oil-immersed transformer will produce impurities in the heat transfer oil. The impurities will cause wear to the coil and other components inside the oil-immersed transformer during the flow of the heat transfer oil, thus affecting the life of the oil-immersed transformer.
[0004] Therefore, how to prolong the heat exchange time between the heat transfer oil and the coil and how to separate impurities in the heat transfer oil have become problems to be solved in the existing oil-immersed transformers. In view of the above technical problems, the utility model discloses a separation oil transfer device for an oil-immersed transformer. Utility Model Content
[0005] The utility model aims to provide an oil separation and oil conduction device for an oil-immersed transformer, which can effectively prolong the heat exchange time between the heat-conducting oil and the inner side and the outer side of the coil, ensure sufficient heat dissipation of the coil, and at the same time, can precipitate and separate impurities in the heat-conducting oil during the circulation of the heat-conducting oil, thereby prolonging the service life of the oil-immersed transformer.
[0006] The utility model is realized by the following technical solutions:
[0007] A separation oil guide device for an oil-immersed transformer comprises a transformer box and a heat dissipation part, wherein a heat dissipation cavity is arranged inside the heat dissipation part, a plurality of coils are arranged inside the transformer box, a swirl oil guide flow channel is arranged outside the coil, a baffle oil guide flow channel is arranged inside the coil, the top of the heat dissipation cavity is respectively connected to the top of the swirl oil guide flow channel and the top of the baffle oil guide flow channel; the bottom of the heat dissipation cavity is respectively connected to the bottom of the swirl oil guide flow channel and the bottom of the baffle oil guide flow channel.
[0008] The heat dissipation cavity is filled with heat transfer oil. Under the action of the temperature difference in the vertical direction inside the transformer, the heat transfer oil flows from bottom to top. That is, the heat transfer oil inside the heat dissipation cavity flows to the swirl oil flow channel and the baffle oil flow channel through the bottom of the heat dissipation cavity, and part of the heat transfer oil flows from bottom to top outside the coil along the swirl oil flow channel, and increases the heat exchange distance and time with the coil through the swirl path along the swirl oil flow channel; similarly, part of the heat transfer oil flows from bottom to top inside the coil along the baffle oil flow channel, and increases the heat exchange distance and time with the coil through the baffle path along the baffle oil flow channel. In this way, the heat exchange time between the heat transfer oil and the coil is extended, and the coil can be fully cooled. At the same time, the heat transfer oil after heat exchange flows back to the heat dissipation cavity from the top of the heat dissipation part, and exchanges heat with the external environment through the heat sink, so that the heat transfer oil cools down again and participates in the next heat transfer cycle. At the same time, when the heat transfer oil in the swirl oil guide channel is swirling, under the action of the swirl centrifugal force, the impurities with higher density in the heat transfer oil can be separated from the heat transfer oil and the impurities are settled at the bottom of the swirl oil guide channel to ensure the cleanliness of the heat transfer oil.
[0009] In order to better realize the utility model, further, a swirl guide plate is arranged on the outer side of the coil along the spiral direction, and a swirl oil guide channel is formed between the swirl guide plate and the outer side of the coil.
[0010] In order to better implement the utility model, further, a sedimentation groove is provided on the side of the swirl guide plate away from the coil.
[0011] In order to better realize the utility model, further, a plurality of baffle guide plates are arranged at intervals and staggered along the direction from top to bottom on the inner side of the coil, and a baffle oil guide channel is formed between the baffle guide plate and the inner side of the coil.
[0012] In order to better realize the utility model, further, the baffle guide plate includes a first baffle and a second baffle, and the first baffle and the second baffle are staggered to form a baffle oil guide channel between the first baffle and the second baffle.
[0013] In order to better realize the present utility model, further, the first baffle plate and the second baffle plate are both arranged at an angle, and the first baffle plate and the second baffle plate are arranged in parallel.
[0014] In order to better implement the present utility model, further, the inclination angle of the first baffle plate and the second baffle plate relative to the horizontal plane is 20°-35°.
[0015] In order to better realize the utility model, further, the heat dissipation part includes a plurality of heat dissipation fins arranged side by side, adjacent heat dissipation fins are connected in sequence through connecting channels, and a heat dissipation cavity is arranged inside the heat dissipation fins.
[0016] Compared with the prior art, the utility model has the following advantages and beneficial effects:
[0017] (1) The utility model realizes heat dissipation of the coil inside the transformer box by circulating heat transfer oil in the heat dissipation part and the transformer box, and at the same time, a swirl oil flow channel is provided on the outside of the coil, and a baffle oil flow channel is provided on the inside of the coil, so that the heat transfer oil swirls along the swirl oil flow channel and baffles along the baffle oil flow channel, thereby effectively extending the heat exchange time between the heat transfer oil and the coil, ensuring that the coil can fully dissipate heat and cool down;
[0018] (2) By setting a swirl oil guide channel on the outside of the coil, when the heat transfer oil swirls along the swirl oil guide channel, the impurities in the heat transfer oil are separated from the heat transfer oil by the centrifugal force of the swirl and deposited on the side of the swirl oil guide channel away from the coil, thereby avoiding a large amount of impurities mixed in the heat transfer oil and affecting the service life of the oil-immersed transformer. BRIEF DESCRIPTION OF THE DRAWINGS
[0019] Figure 1 It is a structural schematic diagram of a separation oil guide device for an oil-immersed transformer;
[0020] Figure 2 It is a cross-sectional schematic diagram of a swirl oil guide flow channel and a baffle oil guide flow channel;
[0021] Figure 3 It is a three-dimensional schematic diagram of a swirl oil guide channel and a baffle oil guide channel;
[0022] Figure 4 It is a structural schematic diagram of a swirl guide plate;
[0023] Figure 5 It is a schematic diagram of the structure of the heat sink.
[0024] Among them: 1-transformer box; 2-heat dissipation part; 3-coil; 4-swirl oil guide channel; 5-baffle oil guide channel; 21-heat sink; 41-swirl guide plate; 42-sedimentation trough; 51-baffle guide plate; 511-first baffle plate; 512-second baffle plate. DETAILED DESCRIPTION
[0025] The following detailed descriptions are all illustrative and are intended to provide further explanation of the present invention. Unless otherwise specified, all technical and scientific terms used in the present invention have the same meanings as those commonly understood by those skilled in the art to which the present invention belongs.
[0026] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the utility model. As used herein, unless the utility model explicitly states otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.
[0027] For the convenience of description, if the words "up", "down", "left" and "right" appear in the present invention, they only indicate that they are consistent with the up, down, left and right directions of the drawings themselves, and do not limit the structure. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or component must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it cannot be understood as a limitation on the present invention.
[0028] Terminology explanation section: The terms "install", "connect", "connect", "fixed" and so on in the present utility model should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integrated connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be an internal connection between two elements, or an interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood according to the specific circumstances.
[0029] Embodiment 1:
[0030] The present embodiment is a separation oil guide device for an oil-immersed transformer, such as Figure 1-Figure 3 As shown, it includes a transformer box 1 and a heat dissipation part 2, a heat dissipation cavity is arranged inside the heat dissipation part 2, a plurality of coils 3 are arranged inside the transformer box 1, a swirl oil guide channel 4 is arranged outside the coil 3, a baffle oil guide channel 5 is arranged inside the coil 3, the top of the heat dissipation cavity is respectively connected to the top of the swirl oil guide channel 4 and the top of the baffle oil guide channel 5; the bottom of the heat dissipation cavity is respectively connected to the bottom end of the swirl oil guide channel 4 and the bottom end of the baffle oil guide channel 5.
[0031] A first oil port is provided on one side of the bottom of the heat sink 2, and a second oil port is provided on one side of the top of the heat sink 2. The first oil port is connected to one side of the bottom of the transformer case 1, and the second oil port is connected to one side of the top of the transformer case 1, forming a circulation flow path for the heat transfer oil between the heat sink 2 and the transformer case 1. Specifically, the first oil port is provided corresponding to the bottom of the coil 3, and the second oil port is provided corresponding to the top of the coil 3, so that the heat transfer oil can pass through the entire coil 3 during the circulation process. A swirl oil guide channel 4 is provided on the outside of the coil 3, and a baffle oil guide channel 5 is provided on the inside of the coil 3, that is, between the coil 3 and the frame.
[0032] Under the effect of the internal temperature difference of the transformer box 1, the heat transfer oil flows from bottom to top, part of the heat transfer oil flows along the outside of the coil 3 through the swirl oil flow channel 4, and part of the heat transfer oil flows along the inside of the coil 3 through the baffle oil flow channel 5. The flow distance of the heat transfer oil can be effectively extended by providing the swirl oil flow channel 4 and the baffle oil flow channel 5, that is, when the heat exchange between the heat transfer oil and the coil 3 is increased, the heat transfer oil can fully absorb the heat of the coil 3 to improve the heat dissipation efficiency of the coil 3.
[0033] At the same time, impurities will be generated during the long-term use of the heat transfer oil. When the heat transfer oil swirls inside the swirl oil guide channel 4, it is affected by the swirl centrifugal force, which causes the impurities with higher density in the heat transfer oil to separate from the heat transfer oil and settle at the bottom of the swirl oil guide channel, so that the staff can clean it regularly to maintain the cleanliness of the heat transfer oil.
[0034] Embodiment 2:
[0035] An oil separation and oil guiding device for an oil-immersed transformer is improved on the basis of Example 1, such as Figure 4 As shown, a swirl guide plate 41 is provided on the outer side of the coil 3 along the spiral direction, and a swirl oil guide channel 4 is formed between the swirl guide plate 41 and the outer side of the coil 3 .
[0036] The swirl guide plate 41 includes an inclined plate and an arc plate, one end of the inclined plate abuts against the outer side of the coil 3, and the other end of the inclined plate is provided with an arc plate, which is bent upward to form an arc structure. The swirl guide plate 41 composed of the inclined plate and the arc plate can guide the heat transfer oil so that the heat transfer oil swirls outside the coil 3 along the direction of the spiral line.
[0037] Furthermore, a sedimentation groove 42 is provided on the side of the swirl guide plate 41 away from the coil 3. When the heat transfer oil swirls along the swirl guide plate 41, impurities with higher density are separated and deposited into the sedimentation groove 42 by the centrifugal force of the swirl, so that the staff can clean it regularly.
[0038] The other parts of this embodiment are the same as those of Embodiment 1, and thus will not be described in detail.
[0039] Embodiment 3:
[0040] An oil separation and oil guiding device for an oil-immersed transformer, improved on the basis of Embodiment 1 or 2, such as Figure 2As shown, a plurality of baffle guide plates 51 are staggeredly arranged at intervals from top to bottom on the inner side of the coil 3, and a baffle oil guide channel 5 is formed between the baffle guide plates 51 and the inner side of the coil 3. By staggeredly arranging the baffle guide plates 51, a meandering baffle oil guide channel 5 can be formed, thereby extending the heat exchange time between the heat transfer oil and the inner side of the coil 3, and ensuring that the coil 3 is fully cooled.
[0041] Further, the baffle guide plate 51 includes a first baffle 511 and a second baffle 512, and the first baffle 511 and the second baffle 512 are staggered to form a baffle oil guide channel 5 between the first baffle 511 and the second baffle 512. One end of the first baffle 511 abuts against the left side of the inner coil surface of the coil 3, and the other end of the first baffle 511 extends toward the second baffle 512. One end of the second baffle 512 abuts against the right side of the inner coil surface of the coil 3, and the other end of the second baffle 512 extends toward the first baffle 511.
[0042] Furthermore, the first baffle 511 and the second baffle 512 are both horizontally or inclinedly arranged.
[0043] The other parts of this embodiment are the same as those of Embodiment 1 or 2, and thus will not be described in detail.
[0044] Embodiment 4:
[0045] An oil separation and oil guiding device for an oil-immersed transformer, improved on the basis of any one of embodiments 1-3, such as Figure 2 As shown, the first baffle 511 and the second baffle 512 are both arranged tilted, and the first baffle 511 and the second baffle 512 are arranged in parallel, that is, the first baffle 511 and the second baffle 512 are arranged at the same upward inclination angle relative to the horizontal plane.
[0046] Furthermore, the inclination angle of the first baffle plate 511 and the second baffle plate 512 relative to the horizontal plane is 20°-35°.
[0047] The other parts of this embodiment are the same as any one of Embodiments 1-3, so they will not be repeated here.
[0048] Embodiment 5:
[0049] An oil separation and oil guiding device for an oil-immersed transformer, improved on the basis of any one of embodiments 1-4, such as Figure 5 As shown, the heat dissipation portion 2 includes a plurality of heat dissipation fins 21 arranged side by side, and adjacent heat dissipation fins 21 are sequentially connected via connecting channels, and a heat dissipation cavity is provided inside the heat dissipation fins 21 .
[0050] The heat transfer oil after exchanging heat with the coil 3 returns to the heat dissipation cavity and flows through the connecting channels between adjacent heat sinks 21. When flowing through each heat sink 21, it exchanges heat with the external environment, so that the heat transfer oil is quickly cooled to participate in the next cycle.
[0051] The other parts of this embodiment are the same as any one of Embodiments 1-4, so they are not described again.
[0052] The above are only preferred embodiments of the present invention and are not intended to limit the present invention in any form. Any simple modifications or equivalent changes made to the above embodiments based on the technical essence of the present invention fall within the protection scope of the present invention.
Claims
1. An oil separation and guiding device for an oil-immersed transformer, comprising a transformer box (1) and a heat dissipation part (2), wherein a heat dissipation cavity is arranged inside the heat dissipation part (2), characterized in that: A plurality of coils (3) are arranged inside the transformer box (1); a swirl oil guide channel (4) is arranged outside the coil (3); a baffle oil guide channel (5) is arranged inside the coil (3); the top of the heat dissipation cavity is respectively connected to the top of the swirl oil guide channel (4) and the top of the baffle oil guide channel (5); and the bottom of the heat dissipation cavity is respectively connected to the bottom of the swirl oil guide channel (4) and the bottom of the baffle oil guide channel (5).
2. The oil separation and oil guiding device for an oil-immersed transformer according to claim 1, characterized in that: A swirl guide plate (41) is provided on the outer side of the coil (3) along the spiral line direction, and a swirl oil guide channel (4) is formed between the swirl guide plate (41) and the outer side of the coil (3).
3. The oil separation and oil guiding device for an oil-immersed transformer according to claim 2, characterized in that: A sedimentation groove (42) is provided on a side of the swirl guide plate (41) away from the coil (3).
4. The oil separation and guiding device for an oil-immersed transformer according to claim 1, characterized in that: A plurality of baffle guide plates (51) are arranged at intervals and in an interlaced manner in a direction from top to bottom on the inner side of the coil (3), and a baffle oil guide channel (5) is formed between the baffle guide plates (51) and the inner side of the coil (3).
5. The oil separation and oil guiding device for an oil-immersed transformer according to claim 4, characterized in that: The baffle guide plate (51) comprises a first baffle plate (511) and a second baffle plate (512), wherein the first baffle plate (511) and the second baffle plate (512) are arranged alternately to form a baffle oil guide channel (5) between the first baffle plate (511) and the second baffle plate (512).
6. The oil separation and oil guiding device for an oil-immersed transformer according to claim 5, characterized in that: The first baffle plate (511) and the second baffle plate (512) are both arranged at an incline, and the first baffle plate (511) and the second baffle plate (512) are arranged in parallel.
7. The oil separation and oil guiding device for an oil-immersed transformer according to claim 6, characterized in that: The inclination angle of the first baffle plate (511) and the second baffle plate (512) relative to the horizontal plane is 20°-35°.
8. The oil separation and guiding device for an oil-immersed transformer according to any one of claims 1 to 7, characterized in that: The heat dissipation portion (2) comprises a plurality of heat dissipation fins (21) arranged side by side, adjacent heat dissipation fins (21) are connected in sequence via connection channels, and a heat dissipation cavity is provided inside the heat dissipation fins (21).