Transformer lifting seat air guide structure

Abstract

The utility model relates to a kind of transformer elevated seat gas guide structure, including transformer elevated seat and support insulating plate, wherein transformer elevated seat upper end is equipped with sleeve installation flange, and the sleeve installation flange side is equipped with gas pipe joint, the support insulating plate is located in the inside of transformer elevated seat upper end, and the support insulating plate includes the support plate body with upper side as plane, lower side as inclined plane, the upper side plane of the support plate body supports by the sleeve installation flange, gas in the transformer elevated seat flows along the lower side inclined plane of the support plate body, the plate body thin end of the support plate body is equipped with plate body gap, and the gas pipe joint is communicated with the plate body gap. The utility model guides gas flow by setting the support insulating plate with lower side as inclined plane and insulating ring in the inside of transformer elevated seat upper end, so that gas can be guaranteed to discharge smoothly, and cannot gather.

Description

Technical Field

[0001] This utility model relates to the field of transformers, specifically a transformer riser air guide structure. Background Technology

[0002] In existing oil-immersed transformers, the gas connection pipe joint on the riser occupies only a small area of ​​the bushing mounting flange, and the bushing mounting flange is horizontally set. Gas generated during transformer operation can easily accumulate between the bushing mounting flange and the bushing, making it difficult to effectively introduce it into the gas connection pipe. This can cause air bubbles in the transformer oil inside the equipment, which can easily lead to voltage breakdown and other problems, affecting transformer performance and even causing failure.

[0003] Patent CN203966724U discloses a novel low-pressure riser gas collection structure, which also addresses the problem that the upper plane of the riser is a horizontal area without slope, which makes it difficult for gas to flow and causes gas to accumulate. However, this patent involves bending the front and rear walls and the upper cover plate of the riser twice to guide the gas to flow naturally upward and out through the gas guide pipe joint at the highest point. This makes a significant change to the external structure of the riser. Utility Model Content

[0004] The purpose of this utility model is to provide a gas guiding structure for a transformer riser base. By setting a supporting insulating plate and an insulating ring with a sloping lower side inside the upper end of the transformer riser base, the gas flow can be guided, thereby ensuring that the gas is discharged smoothly and does not accumulate.

[0005] The objective of this utility model is achieved through the following technical solution:

[0006] A transformer riser support gas guiding structure includes a transformer riser support and a supporting insulating plate. The transformer riser support has a bushing mounting flange at its upper end, and a connecting gas pipe joint is provided on one side of the bushing mounting flange. The supporting insulating plate is located inside the upper end of the transformer riser support and includes a supporting plate body with a flat upper side and an inclined lower side. The bushing mounting flange is supported by the upper flat side of the supporting plate body. Gas in the transformer riser support flows along the lower inclined side of the supporting plate body. The thin end of the supporting plate body has a plate body notch, and the connecting gas pipe joint communicates with the plate body notch.

[0007] The lower side of the support plate is provided with a support pad, and the lower side of the support pad is in horizontal contact with the height adjustment paper ring located inside the upper end of the transformer riser.

[0008] The upper side of the support pad is inclined and the lower side is flat, and the upper inclined surface of the support pad matches the lower inclined surface of the support plate.

[0009] The thick end of the support pad has a notch on the side near the support plate.

[0010] The sleeve mounting flange has a sleeve flange through hole in the middle, and the support plate has a plate through hole in the middle that communicates with the sleeve flange through hole. An insulating ring is provided in the sleeve flange through hole, and an insulating ring lower slope is provided on the lower side of the insulating ring.

[0011] The support plate has two support pads on its lower side, and the two support pads are respectively located on both sides of the through hole of the plate. The part of the upper side of the support pad located in the through hole of the plate forms an insulating ring support part that supports the insulating ring.

[0012] The transformer riser is equipped with a current transformer and a transformer support plate inside. The lower end of the current transformer is supported by the transformer support plate, and the upper end is equipped with a height adjustment paper ring.

[0013] The transformer riser is provided with an upper flange at the upper end and a lower flange at the lower end, wherein the upper flange is fixedly connected to the bushing mounting flange.

[0014] The advantages and positive effects of this utility model are as follows:

[0015] 1. This utility model has a supporting insulating plate with a sloping lower side installed inside the upper end of the transformer riser base. In this way, the gas inside the transformer riser base can flow along the sloping lower side of the supporting insulating plate and finally enter the plate body notch located at the thin end of the supporting insulating plate body and be discharged in a concentrated manner through the gas connection pipe joint, thereby ensuring that the gas can be discharged smoothly and will not accumulate.

[0016] 2. This utility model provides two support pads on the lower side of the supporting insulation plate to ensure horizontal contact with the lower height adjustment paper ring. At the same time, the two support pads have a relatively small area, so they will not affect the flow of gas along the lower inclined surface of the supporting insulation plate.

[0017] 3. In this utility model, a notch is provided at the thick end of the support pad near the notch in the plate to allow gas to pass through, thereby further ensuring gas discharge.

[0018] 4. In this utility model, an insulating ring is provided in the through hole of the sleeve flange of the sleeve mounting flange, and the lower side of the insulating ring is provided with a lower inclined surface to guide the gas flow, thereby further avoiding the accumulation of gas at the edge of the through hole of the sleeve flange.

[0019] 5. The portion of the support pad block located inside the through hole of the plate in this utility model forms an insulating ring support part for supporting the insulating ring. This ensures that the internal inclined surface of the upper end of the transformer riser is consistent and also facilitates the installation of the insulating ring.

[0020] 6. This utility model will not have a significant impact on the external structure of the transformer riser, making it easy to modify existing equipment. Attached Figure Description

[0021] Figure 1 This is a sectional view of a transformer riser using the structure of this utility model.

[0022] Figure 2 for Figure 1 A schematic diagram of the structure supporting the insulating plate.

[0023] Figure 3 for Figure 2 Front view of the centrally supporting insulating plate.

[0024] Figure 4 for Figure 3 Top view of the centrally supporting insulating plate.

[0025] Figure 5 for Figure 1 Cross-sectional view of the middle insulating ring.

[0026] Figure 6 for Figure 5 A three-dimensional schematic diagram of the middle insulating ring.

[0027] Figure 7 This is a schematic diagram of the internal structure of a transformer riser in the prior art.

[0028] Among them, 1 is the bushing mounting flange, 2 is the supporting insulating plate, 201 is the supporting pad, 2011 is the thick end of the pad, 2012 is the thin end of the pad, 2013 is the notch of the pad, 2014 is the insulating ring support part, 202 is the supporting plate body, 2021 is the plate body notch, 2022 is the plate body through hole, 2023 is the thin end of the plate body, 2024 is the thick end of the plate body, 3 is the insulating ring, 301 is the lower inclined surface of the insulating ring, 4 is the current transformer, 5 is the connecting pipe joint, 6 is the transformer riser, 601 is the upper flange, 602 is the lower flange, 7 is the transformer support plate, and 8 is the height adjustment paper ring. Detailed Implementation

[0029] The present invention will now be described in further detail with reference to the accompanying drawings.

[0030] like Figures 1-6 As shown, this utility model includes a transformer riser 6 and a supporting insulating plate 2, wherein... Figure 1 As shown, the upper end of the transformer riser 6 is provided with a bushing mounting flange 1, and a connecting pipe joint 5 is provided on one side of the bushing mounting flange 1; the supporting insulation plate 2 is located inside the upper end of the transformer riser 6, and as shown... Figures 2-4 As shown, the supporting insulating plate 2 includes a supporting plate body 202 with a flat upper side and an inclined lower side; as Figure 1As shown, the sleeve mounting flange 1 is supported by the upper plane of the support plate 202, and the lower inclined surface of the support plate 202 is used to guide gas flow; as Figure 2 and Figure 4 As shown, the lower inclined surface of the support plate 202 forms a thin end 2023 at one end and a thick end 2024 at the other end, and the thin end 2023 of the support plate 202 has a notch 2021; Figure 1 As shown, the gas connection pipe joint 5 is connected to the plate opening 2021. When this utility model is working, the gas in the transformer riser 6 will flow along the inclined surface on the lower side of the support plate 202 to the plate opening 2021 at the thin end 2023 of the plate, and then be discharged through the gas connection pipe joint 5.

[0031] like Figure 1 As shown, the sleeve mounting flange 1 has a sleeve flange through hole in the middle, such as... Figures 2-4 As shown, the support plate 202 has a through hole 2022 in the middle that communicates with the through hole of the sleeve flange. The support insulation plate 2 includes support pads 201, and two support pads 201 are provided on the lower side of the support plate 202 and respectively on both sides of the through hole 202. Figure 1 and Figure 3 As shown, the lower side of the support pad 201 contacts the height adjustment paper ring 8 located inside the upper end of the transformer riser 6.

[0032] like Figures 2-3 As shown, in this embodiment, the upper side of the support pad 201 is an inclined surface, and the lower side is a flat surface. The upper inclined surface of the support pad 201 engages with the lower inclined surface of the support plate 202, and the lower flat surface of the support pad 201 is in horizontal contact with the height adjustment paper ring 8. Figure 3 As shown, in this embodiment, the angle α between the upper inclined surface and the lower plane of the support pad 201 is 3°.

[0033] like Figures 2-3 As shown, the upper inclined surface of the support pad 201 forms a thick end 2011 at one end and a thin end 2012 at the other end. The thick end 2011 has a notch 2013 near the support plate 202, so that gas can pass through the notch 2013 and eventually flow into the plate notch 2021, thereby further ensuring gas discharge.

[0034] like Figure 1 As shown, an insulating ring 3 may be provided inside the through hole of the sleeve flange as needed, and as... Figure 5As shown, the lower side of the insulating ring 3 is provided with an insulating ring lower slope 301. The insulating ring lower slope 301 can also be used to guide the gas flow to avoid gas accumulation at the edge of the sleeve flange through hole.

[0035] like Figure 4 As shown, in this embodiment, the portion of the upper inclined surface of the support pad 201 located within the through hole 202 of the plate forms an insulating ring support portion 2014, and the lower side of the insulating ring 3 is supported by the insulating ring support portion 2014. This ensures that the inner inclined surface of the upper end of the transformer riser 6 is consistent, and also facilitates the installation of the insulating ring 3.

[0036] like Figure 1 As shown in this embodiment, the transformer riser 6 is provided with a current transformer 4 and a transformer support plate 7 inside, wherein the lower end of the current transformer 4 is supported by the transformer support plate 7 and the upper end is provided with the height adjustment paper ring 8.

[0037] like Figure 1 As shown in this embodiment, the transformer riser 6 has an upper flange 601 at the upper end and a lower flange 602 at the lower end. The upper flange 601 is fixedly connected to the bushing mounting flange 1, and the lower flange 601 is used to fix the transformer riser 6.

[0038] The working principle of this utility model is as follows:

[0039] like Figure 7 As shown, the upper interior of the transformer riser seat 6 in the prior art is horizontal, which makes it easy for gas to focus at the edge corner shown at point A and not be able to be discharged in time. This will cause air bubbles to accumulate in the transformer oil inside the transformer riser seat 6, thereby affecting the transformer performance and even causing a malfunction.

[0040] And such Figures 1-4 As shown, this utility model has a supporting insulating plate 2 with a sloping lower side inside the upper end of the transformer riser 6, and the thin end 2023 of the supporting insulating plate 2 has a plate notch 2021 that communicates with the gas connecting pipe joint 5. In this way, the gas in the transformer riser 6 can flow along the sloping lower side of the supporting insulating plate 2 and enter the plate notch 2021 and be discharged by the gas connecting pipe joint 5.

[0041] Other examples Figures 1-4 As shown, this utility model provides two support pads 201 on the lower side of the supporting insulating plate 2 to ensure horizontal contact with the lower height adjustment paper ring 8, thus not affecting the height adjustment function of the height adjustment paper ring 8. Simultaneously, the two support pads 201 have relatively small areas, so they do not affect the gas flow along the lower inclined surface of the supporting insulating plate 2. Figures 2-3As shown, this utility model further provides a notch 2013 on the thick end 2011 of the support pad 201 near the notch 2013 in the plate body, allowing gas to pass through, thereby further ensuring gas discharge. The height-adjusting paper ring 8 achieves height adjustment by setting paper rings of different layers or different thicknesses, which is a well-known technology in the field.

[0042] Finally, as Figure 1 As described above, in this utility model, an insulating ring 3 can be provided in the through hole of the sleeve flange 1 as needed, and as such... Figure 5 As shown, the insulating ring 3 has a lower inclined surface 301 on its lower side to guide gas flow, thereby further ensuring gas flow. Figure 7 The sleeve flange through-hole shown does not accumulate at the edge, and at the same time... Figure 4 As shown, the portion of the support pad 201 located within the through hole 2022 of the plate forms an insulating ring support portion 2014 to support the insulating ring 3. This ensures that the internal slope of the upper end of the transformer riser 6 is consistent, and also facilitates the installation of the insulating ring 3.

Claims

1. A transformer riser air guide structure, characterized in that: The transformer includes a transformer riser base (6) and a supporting insulating plate (2). The transformer riser base (6) is provided with a bushing mounting flange (1) at its upper end, and a gas connecting pipe joint (5) is provided on one side of the bushing mounting flange (1). The supporting insulating plate (2) is located inside the upper end of the transformer riser base (6), and the supporting insulating plate (2) includes a supporting plate body (202) with a flat upper side and an inclined lower side. The bushing mounting flange (1) is supported by the upper flat side of the supporting plate body (202). The gas in the transformer riser base (6) flows along the lower inclined side of the supporting plate body (202). The thin end (2023) of the supporting plate body (202) is provided with a plate body notch (2021), and the gas connecting pipe joint (5) is connected to the plate body notch (2021).

2. The transformer riser air guide structure according to claim 1, characterized in that: The support plate (202) is provided with a support pad (201) on its lower side, and the lower side of the support pad (201) is in horizontal contact with the height adjustment paper ring (8) located inside the upper end of the transformer lifting seat (6).

3. The transformer riser air guide structure according to claim 2, characterized in that: The upper side of the support pad (201) is inclined and the lower side is flat, and the upper inclined surface of the support pad (201) cooperates with the lower inclined surface of the support plate (202).

4. The transformer riser air guide structure according to claim 3, characterized in that: The thick end (2011) of the support pad (201) has a notch (2013) on the side near the support plate (202).

5. The transformer riser air guide structure according to claim 1, characterized in that: The sleeve mounting flange (1) has a sleeve flange through hole in the middle, and the support plate (202) has a plate through hole (2022) in the middle that communicates with the sleeve flange through hole. An insulating ring (3) is provided in the sleeve flange through hole, and an insulating ring lower slope (301) is provided on the lower side of the insulating ring (3).

6. The transformer riser air guide structure according to claim 5, characterized in that: The support plate (202) has two support pads (201) on its lower side, and the two support pads (201) are respectively located on both sides of the through hole (2022) of the plate. The part of the upper side of the support pad (201) located in the through hole (2022) of the plate forms an insulating ring support part (2014) that supports the insulating ring (3).

7. The transformer riser air guide structure according to claim 1, characterized in that: The transformer riser (6) is equipped with a current transformer (4) and a transformer support plate (7) inside. The current transformer (4) is supported at the lower end by the transformer support plate (7) and has a height adjustment paper ring (8) at the upper end.

8. The transformer riser air guide structure according to claim 1, characterized in that: The transformer riser (6) is provided with an upper flange (601) at the upper end and a lower flange (602) at the lower end, wherein the upper flange (601) is fixedly connected to the bushing mounting flange (1).

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