A low-voltage busbar mounting structure for oil-immersed transformers

Abstract

This utility model relates to the installation structure of a low-voltage busbar, and discloses an installation structure for a low-voltage busbar in an oil-immersed transformer, including a low-voltage busbar, a protective cover, and multiple connecting plates. The low-voltage busbar is installed on the top surface of the oil tank. The protective cover is hollow and mounted on the oil tank. The protective cover has a downward-opening input end, which is used to abut against the top surface of the oil tank. One end of each of the multiple connecting plates is connected to the corresponding output end of the low-voltage busbar. The input end of the protective cover surrounds the low-voltage busbar, and the connecting plates are housed within the protective cover. The other end of each connecting plate extends rearward and is used to connect low-voltage cables. This structure can prevent the low-voltage busbar and connecting plates from being collided and contaminated during transportation, improve the efficiency of on-site transformer installation, and extend the service life of the protective cover, low-voltage busbar, and connecting plates.

Description

Technical Field

[0001] This utility model relates to the field of low-voltage busbar installation technology, and in particular to a low-voltage busbar installation structure for oil-immersed transformers. Background Technology

[0002] In an oil-immersed transformer, the transformer oil serves as both the insulating medium and coolant inside the transformer.

[0003] Existing technologies improve the heat dissipation efficiency and adaptability to temperature changes of transformers by connecting an external oil tank, and reduce the amount of transformer oil used.

[0004] The top surface of the oil tank is provided with an installation groove for installing the low-voltage busbar. In order to prevent the low-voltage busbar from being damaged by collision during transportation, the low-voltage busbar and the connecting piece for connecting the low-voltage cable need to be installed at the transformer assembly site, which increases the workload of on-site transformer installation.

[0005] When a transformer is in use, the low-voltage busbar, connecting plates, and the sheaths installed at the connection points are all exposed to the elements, which can cause them to age easily and accumulate dirt on their surfaces, thus shortening their service life. Utility Model Content

[0006] To address the aforementioned shortcomings, the purpose of this utility model is to propose a low-voltage busbar installation structure for oil-immersed transformers, thereby solving the problems of increased workload during on-site transformer installation, and the easy aging, accumulation of dirt, and short service life of low-voltage busbars, connecting plates, and sheaths.

[0007] To achieve this objective, the present invention adopts the following technical solution: A low-voltage busbar mounting structure for an oil-immersed transformer includes a low-voltage busbar, a protective cover, and multiple connecting pieces. The low-voltage busbar is installed on the top surface of the oil tank of the oil-immersed transformer; The cable guard is hollow and mounted on the oil tank; The cable guard has a downward-opening input end, which is used to press against the top surface of the oil tank. One end of each of the multiple connecting pieces is connected to the corresponding output end of the low-voltage busbar. The input end of the cable guard surrounds the low-voltage busbar. The connecting pieces are housed inside the cable guard. The other end of the connecting pieces extends backward and is used to connect the low-voltage cable.

[0008] Specifically, the cable guard includes a detachable input section and an output section; The input section has a lower input port and a first output port; The lower input port is located on the front bottom surface of the input segment, and the first output port is located on the rear end surface of the input segment; The lower input port is the input end of the cable guard; the output end is provided with a second input port and a second output port; The second input port is located on the front end face of the output segment, and the second output port is located on the bottom face of the output segment; The first output port can be used to output low-voltage cables backward, or to connect with the second input port; the second output port can be used to output low-voltage cables downward.

[0009] Furthermore, the input section is provided with multiple first suspension arms, and the output section is provided with multiple second suspension arms; The top end of the first suspension arm is fixedly connected to the top surface of the inner wall of the input section, and the bottom end of the first suspension arm extends downward and is suspended from the middle of the corresponding connecting piece by the first fastener. The top end of the second suspension arm is fixedly connected to the top surface of the inner wall of the output section; the connecting piece extending into the output section is suspended from the corresponding second suspension arm by a second fastener.

[0010] Furthermore, the input segment is provided with a first operating port and a first cover plate; The first operating port extends from top to bottom through the top surface of the input section, and the first operating port faces downwards and is aligned with the lower input port; the first cover plate is used to cover and close the first operating port.

[0011] Furthermore, the output section is provided with a second operating port and a second cover plate; The second operating port extends from back to front through the rear end face of the output section, with the second operating port facing forward and opposite to the second input port; the second cover plate is used to cover and close the second operating port.

[0012] Furthermore, the cable guard also includes a sealing plate; The sealing plate is used to cover and close either the first output port or the second output port.

[0013] Preferably, the outer surface of the wire protector is coated with an anti-aging coating, and the inner wall of the wire protector is covered with an insulating film.

[0014] The beneficial effects of the technical solution of this utility model are as follows: the protection of the wire guard can prevent the low-voltage busbar and connecting piece from being bumped and contaminated during transportation and storage, improve the work efficiency of transformer on-site installation, avoid the low-voltage busbar, connecting piece and sheath from aging and accumulating stains due to exposure, and improve the service life of sheath, low-voltage busbar and connecting piece. Attached Figure Description

[0015] Figure 1A schematic diagram of a transformer structure according to an embodiment of the low-voltage busbar mounting structure for oil-immersed transformers described herein; Figure 2 A schematic diagram of the transformer structure after the wire protection cover has been installed; The components include: oil tank 1; low-voltage busbar 3; cable guard 2; connecting piece 4; input section 21; output section 22; lower input port 210; first output port 211; second output port 221; first suspension arm 212; second suspension arm 222; first cover plate 213; and second cover plate 223. Detailed Implementation

[0016] The following is in conjunction with the appendix Figure 1-2 The technical solution of this utility model will be further illustrated through specific implementation methods.

[0017] The accompanying drawings are for illustrative purposes only and should not be construed as limiting the scope of this patent. To better illustrate this embodiment, some components in the drawings may be omitted, enlarged, or reduced, and do not represent the actual dimensions of the product. It is understandable to those skilled in the art that some well-known structures and their descriptions may be omitted in the drawings.

[0018] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation" and "connection" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can also refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0019] A low-voltage busbar mounting structure for an oil-immersed transformer includes a low-voltage busbar 3, a wire protection cover 2, and multiple connecting pieces 4; The low-voltage busbar 3 is installed on the top surface of the oil tank 1 of the oil-immersed transformer; The cable guard 2 is hollow and mounted on the oil tank 1; The cable guard 2 has a downward-opening input end, which is used to press against the top surface of the oil tank 1. One end of each of the multiple connecting pieces 4 is connected to the corresponding output end of the low-voltage busbar 3. The input end of the cable guard 2 surrounds the low-voltage busbar 3. The connecting pieces 4 are housed inside the cable guard 2. The other end of the connecting pieces 4 extends backward and is used to connect the low-voltage cable.

[0020] like Figure 1As shown, before delivery and transportation, the low-voltage busbar 3 can be pre-installed, followed by the cable guard 2 and multiple connecting pieces 4. The low-voltage busbar 3 is then connected to the multiple connecting pieces 4. The cable guard 2 protects the low-voltage busbar 3 and connecting pieces 4 from collisions and contamination during transportation, reducing the workload at the installation site and improving the connection convenience between the connecting pieces 4 and the low-voltage cables. This improves the installation efficiency of the tank 1 and prevents the low-voltage busbar 3 and connecting pieces 4 from being exposed to sun and rain during use. It also prevents stains from forming on the surface of the sheath used to wrap the low-voltage busbar 3 and connecting pieces 4, thereby increasing the service life of the sheath, low-voltage busbar 3, and connecting pieces 4.

[0021] Specifically, the cable guard 2 includes a detachable input section 21 and an output section 22; The input segment 21 has a lower input port 210 and a first output port 211; The lower input port 210 is located on the front bottom surface of the input segment 21, and the first output port is located on the rear end surface of the input segment 21. The lower input port 210 is the input end of the cable guard 2; the output end 22 is provided with a second input port and a second output port 221; The second input port is located on the front end face of the output segment 22, and the second output port 221 is located on the bottom face of the output segment 22; The first output port 211 can be used to output low-voltage cables backward, or to connect with the second input port; the second output port 221 can be used to output low-voltage cables downward.

[0022] like Figure 1 and Figure 2 As shown, multiple connecting pieces 4 can be installed and stored in the input section 21 and output section 22 of the cable guard 2 to protect the connecting pieces 4.

[0023] In practical use, you can choose to use input segment 21 and / or output segment 22 as needed. For example, if you are outputting low-voltage cables to the rear, you can use only input segment 21; if you are outputting low-voltage cables to the lower, you can connect input segment 21 and output segment 22 together.

[0024] Furthermore, the input segment 21 is provided with a plurality of first suspension arms 212, and the output segment 21 is provided with a plurality of second suspension arms 222; The top end of the first suspension arm 212 is fixedly connected to the top surface of the inner wall of the input section 21, and the bottom end of the first suspension arm 212 extends downward and is suspended from the middle of the corresponding connecting piece 4 by the first fastener. The top end of the second suspension arm 212 is fixedly connected to the top surface of the inner wall of the output section 22; the connecting piece 4 extending into the output section 22 is suspended from the corresponding second suspension arm 222 by a second fastener.

[0025] like Figure 1 As shown, the installation stability of multiple connecting pieces 4 within the wire protection cover 2 can be improved by using multiple first suspension arms 212 and multiple second suspension arms 222.

[0026] Furthermore, the input segment 21 is provided with a first operation port and a first cover plate 213; The first operating port extends from top to bottom through the top surface of the input section 21, and the first operating port faces downwards and is aligned with the lower input port 210; the first cover plate 213 is used to cover and close the first operating port.

[0027] like Figure 1 As shown, the opening of the first operating port can improve the convenience of connecting the connecting piece 4 and the low-voltage busbar 3.

[0028] Furthermore, the output section 21 is provided with a second operation port and a second cover plate 223; The second operating port extends from back to front through the rear end face of the output section 21. The second operating port is positioned facing forward and is opposite to the second input port. The second cover plate 223 is used to cover and close the second operating port.

[0029] like Figure 1 As shown, the second operating port can improve the ease of installation and operation of fixing the connecting piece 4 to the first suspension arm 212 or the second suspension arm 222.

[0030] Furthermore, the wire protection cover 2 also includes a sealing plate 23; The sealing plate 23 is used to cover and close the first output port 211 or the second output port 221.

[0031] like Figure 1 As shown, when the connecting piece 4 is not connected to the low-voltage cable, the first output port 211 or the second output port 221 can be sealed by the sealing plate 23 to prevent dust or foreign objects from entering the cable cover 2 during transportation and storage, thereby avoiding contamination of the low-voltage busbar 3 and the connecting piece 4.

[0032] Preferably, the outer surface of the wire protection cover 2 is coated with an anti-aging coating, and the inner wall surface of the wire protection cover 2 is covered with an insulating film.

[0033] Applying an anti-aging coating to the outer surface can improve the corrosion resistance and service life of the wire cover 2; covering the inner wall of the wire cover 2 with an insulating film can prevent leakage of current during live maintenance operations.

[0034] In summary, such as Figure 1-2The embodiment of the present invention shown herein provides a low-voltage busbar installation structure for an oil-immersed transformer. The protective cover 2 prevents the low-voltage busbar 3 and connecting piece 4 from being bumped and contaminated during transportation and storage, improving the efficiency of on-site transformer installation. It also prevents the low-voltage busbar 3, connecting piece 4, and sheath from aging and accumulating dirt due to exposure, and extends the service life of the sheath, low-voltage busbar 3, and connecting piece 4.

[0035] The technical principles of this utility model have been described above with reference to specific embodiments. These descriptions are merely for explaining the principles of this utility model and should not be construed as limiting the scope of protection of this utility model in any way. Based on this explanation, those skilled in the art can readily conceive of other specific embodiments of this utility model without any inventive effort, and these embodiments will all fall within the scope of protection of this utility model.

Claims

1. A low-voltage busbar mounting structure for an oil-immersed transformer, characterized in that, Includes low-voltage busbars, cable guards, and multiple connecting pieces; The low-voltage busbar is installed on the top surface of the oil tank of the oil-immersed transformer; The cable guard is hollow and mounted on the oil tank; The cable guard has a downward-opening input end, which is used to press against the top surface of the oil tank. One end of each of the multiple connecting pieces is connected to the corresponding output end of the low-voltage busbar. The input end of the cable guard surrounds the low-voltage busbar. The connecting pieces are housed inside the cable guard. The other end of the connecting pieces extends backward and is used to connect the low-voltage cable.

2. The low-voltage busbar mounting structure for oil-immersed transformers according to claim 1, characterized in that, The cable guard includes a detachable input section and an output section; The input section has a lower input port and a first output port; The lower input port is located on the front bottom surface of the input segment, and the first output port is located on the rear end surface of the input segment; The lower input port is the input end of the cable guard; the output end is provided with a second input port and a second output port; The second input port is located on the front end face of the output segment, and the second output port is located on the bottom face of the output segment; The first output port can be used to output low-voltage cables backward, or to connect with the second input port; the second output port can be used to output low-voltage cables downward.

3. The low-voltage busbar mounting structure for oil-immersed transformers according to claim 2, characterized in that, The input section is provided with multiple first suspension arms, and the output section is provided with multiple second suspension arms; The top end of the first suspension arm is fixedly connected to the top surface of the inner wall of the input section, and the bottom end of the first suspension arm extends downward and is suspended from the middle of the corresponding connecting piece by the first fastener. The top end of the second suspension arm is fixedly connected to the top surface of the inner wall of the output section; the connecting piece extending into the output section is suspended from the corresponding second suspension arm by a second fastener.

4. The low-voltage busbar mounting structure for oil-immersed transformers according to claim 2, characterized in that, The input section is provided with a first operating port and a first cover plate; The first operating port extends from top to bottom through the top surface of the input segment, and the first operating port is aligned downwards with the lower input port; The first cover plate is used to cover and close the first operating port.

5. The low-voltage busbar mounting structure for an oil-immersed transformer according to claim 2, characterized in that, The output section is provided with a second operating port and a second cover plate; The second operating port extends from back to front through the rear end face of the output section, with the second operating port facing forward and opposite to the second input port; the second cover plate is used to cover and close the second operating port.

6. The low-voltage busbar mounting structure for oil-immersed transformers according to claim 2, characterized in that, The cable guard also includes a sealing plate; The sealing plate is used to cover and close either the first output port or the second output port.

7. The low-voltage busbar mounting structure for an oil-immersed transformer according to claim 1, characterized in that, The outer surface of the cable guard is coated with an anti-aging coating, and the inner wall of the cable guard is covered with an insulating film.

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