Reinforced fixing structure for outer row of low-voltage bushings

Abstract

The utility model relates to the technical field of box-type transformers, in particular to a low-voltage bushing outer row reinforcing and fixing structure which is characterized in that a first fixing support piece is fixedly connected with the outer side wall of a box body, and the height of the position where the first fixing support piece is connected with the box body is higher than that of the position where a low-voltage bushing is connected with the box body; the supporting insulator is arranged in the vertical direction, and the upper end face of the supporting insulator is fixedly connected with the end, away from the box body, of the first fixing supporting piece. The second fixing support piece comprises a supporting part and a connecting part, and the supporting part is fixedly connected with the lower end face of the supporting insulator; the connecting part is connected to one end of the supporting part, and the connecting part is fixedly connected with the outer outgoing line bar. The reinforcing and fixing structure for the outer row of the low-voltage sleeve can provide upward connecting force for the outer outgoing line row, prevent the end part of the outer outgoing line row from falling downwards, improve the load tolerance strength of a cantilever of the low-voltage sleeve, and solve the problem that the outer outgoing line row of the low-voltage sleeve is relatively long and relatively large in load, so that the outer outgoing line row is easy to displace or break.

Description

Technical Field

[0001] The utility model relates to the technical field of box-type transformers, and particularly relates to a reinforced fixing structure for the external row of low-voltage bushings. Background Art

[0002] The low-voltage bushing is a key connecting component in a box-type transformer, which is used to lead the lead wire at the low-voltage end of the box-type transformer to the outside of the oil tank. It not only serves as a structure for insulating the lead wire from the ground, but also bears the role of fixing the lead wire. In the existing box-type transformer, the low-voltage output current is small. When the low-voltage bushing is installed on the side wall of the box-type transformer body, the length of the external outgoing line row on the low-voltage bushing is also short, and the cantilever load-bearing strength thereof is sufficient to support the weight of the low-voltage connection row or the hanging cable. However, as the capacity of the box-type transformer is getting larger and larger, the use of large-current low-voltage bushings is increasing. Especially when using low-voltage hanging cables, as many as a dozen cables may be hung on a single low-voltage bushing. Generally, it is required that the external outgoing line row of the low-voltage bushing supporting the box-type transformer adopts a longer and multi-hole structure. At this time, the cantilever load-bearing strength of the low-voltage bushing itself is not enough to bear the weight of the low-voltage connection row or the hanging cable, which easily causes the low-voltage bushing to shift or break, resulting in an oil leakage accident in the box body. Therefore, it is necessary to provide a reinforced fixing structure for the external row of low-voltage bushings to solve the above technical problems. Summary of the Utility Model

[0003] The main purpose of the utility model is to provide a reinforced fixing structure for the external row of low-voltage bushings, which can provide an upward connecting force for the external outgoing line row, prevent the end of the external outgoing line row from drooping, improve the cantilever load-bearing strength of the low-voltage bushing, prevent the low-voltage bushing from shifting or shaking due to vibration, wind force or other external forces, solve the problem that the length of the external outgoing line row of the low-voltage bushing is long and the load is large, which easily leads to displacement or breakage, avoid the occurrence of an oil leakage accident in the box body, and improve the stability of the box-type transformer.

[0004] To achieve the above purpose, the reinforced fixing structure for the external row of low-voltage bushings proposed by the utility model is applied to a box-type transformer. The box-type transformer includes a box body and a low-voltage bushing. The low-voltage bushing is arranged on the side wall of the box body and is used to lead the low-voltage end lead wire inside the box body to the outside of the box body. An external outgoing line row is arranged at one end of the low-voltage bushing away from the box body. The reinforced fixing structure for the external row of low-voltage bushings includes:

[0005] A first fixing member, which is fixedly connected to the outer side wall of the box body, and the height of the position where the first fixing member is connected to the box body is higher than the height of the position where the low-voltage bushing is connected to the box body;

[0006] Support insulator, the support insulator is arranged vertically, the upper end surface of the support insulator is fixedly connected to one end of the first fixing member away from the box body, and the support insulator is placed above the outgoing line row;

[0007] Second fixing member, the second fixing member includes a support portion and a connecting portion, the support portion is fixedly connected to the lower end surface of the support insulator; the connecting portion is connected to one end of the support portion, and the connecting portion extends toward the side of the outgoing line row, and the connecting portion is fixedly connected to the outgoing line row.

[0008] Optionally, the low-voltage bushing outer row strengthening and fixing structure further includes a first bolt, the support portion is a horizontal plate arranged parallel to the horizontal plane; the support portion is provided with a first installation through hole, and the lower end surface of the support insulator is provided with a first threaded hole corresponding to the first installation through hole, and the first bolt sequentially passes through the first installation through hole and the corresponding first threaded hole to fixedly connect the support portion and the support insulator.

[0009] Optionally, the connecting portion includes a side plate and a bottom plate, one end of the side plate is connected to the support portion, the other end of the side plate extends downward and is connected to the bottom plate, the bottom plate and the support portion are located on the same side of the side plate, the bottom plate is arranged parallel to the support portion, and the bottom plate is fixedly connected to the upper end surface of the outgoing line row.

[0010] Optionally, in the height direction, the axes of the support insulator, the support portion and the outgoing line row coincide.

[0011] Optionally, the connecting portion includes a vertical plate, the vertical plate extends downward at one end of the support portion, and an installation space for connecting the outgoing line row is formed between the vertical plate and the support portion, and the end surface of the vertical plate facing the installation space is fixedly connected to the side surface of the outgoing line row.

[0012] Optionally, the width of the vertical plate is the same as the width of the support portion, and the front end surface of the vertical plate is flush with the front end surface of the outgoing line row.

[0013] Optionally, the support portion and the connecting portion are integrally formed structures.

[0014] Optionally, the first fixing member includes a fixing portion and an extending portion, one end of the fixing portion is fixedly connected to the outer side wall of the box body, and the fixing portion is perpendicular to the box body, the other end of the fixing portion is connected with an extending portion, the extending portion extends horizontally in a direction away from the fixing portion, the lower end surface of the extending portion is fixedly connected to the upper end surface of the support insulator, and an installation opening is provided on the upper end surface of the extending portion.

[0015] Optionally, the fixing part and the extending part are integrally formed structures.

[0016] Optionally, the numbers of the first fixing support, the supporting insulator and the second fixing support are respectively equal to the number of the outgoing line rows, and the first fixing support, the supporting insulator and the second fixing support are arranged in one-to-one correspondence with the outgoing line rows.

[0017] Compared with the prior art, the utility model has the following beneficial effects:

[0018] 1. By arranging the external row strengthening fixing structure of the low-voltage bushing on the outer side wall of the box body, the first fixing support is fixedly connected to the outer side wall of the box body to provide a stable support point; the upper end surface of the supporting insulator is fixedly connected to one end of the first fixing support away from the box body, and both the first fixing support and the supporting insulator are located above the outgoing line row. The second fixing support includes a supporting part and a connecting part. The supporting part is fixedly connected to the lower end surface of the supporting insulator, and the connecting part is fixedly connected to the outgoing line row to provide an upward connecting force for the outgoing line row, avoid the end of the outgoing line row from drooping downward, improve the load-bearing strength of the low-voltage bushing cantilever, and prevent the low-voltage bushing from shifting or shaking due to vibration, wind force or other external forces, effectively solving the problem that the length of the outgoing line row of the low-voltage bushing is long and the load is large, which is easy to cause displacement or breakage, avoiding the box body oil leakage accident caused by the displacement or breakage of the low-voltage bushing, and effectively improving the stability of the box-type transformer.

[0019] 2. By arranging the second fixing support between the supporting insulator and the outgoing line row, when the low-voltage bushing needs to be maintained, only the connection part between the outgoing line row and the second fixing support needs to be disassembled, and it is not necessary to disassemble the connection part between the second fixing support and the supporting insulator, effectively improving the service life of the supporting insulator.

[0020] 3. The connection position of the second fixing support and the outgoing line row can be adjusted according to different use scenarios or use requirements of the box-type transformer, effectively improving the adaptability and practicability of the external row strengthening fixing structure of the low-voltage bushing. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 is a schematic diagram of the use state of the external row strengthening fixing structure of the low-voltage bushing according to an embodiment of the utility model;

[0022] Figure 2 is a schematic diagram of the structure of the external row strengthening fixing structure of the low-voltage bushing according to an embodiment of the utility model;

[0023] Figure 3 The front view of the external row reinforcement fixing structure of the low-voltage bushing according to an embodiment of the present utility model;

[0024] Figure 4 The structural schematic diagram of the external row reinforcement fixing structure of the low-voltage bushing according to an embodiment of the present utility model;

[0025] Figure 5 The schematic diagram of the use state of the external row reinforcement fixing structure of the low-voltage bushing according to another embodiment of the present utility model;

[0026] Figure 6 The structural schematic diagram of the external row reinforcement fixing structure of the low-voltage bushing according to another embodiment of the present utility model;

[0027] Figure 7 The front view of the external row reinforcement fixing structure of the low-voltage bushing according to another embodiment of the present utility model;

[0028] Figure 8 The structural schematic diagram of the external row reinforcement fixing structure according to another embodiment of the present utility model;

[0029] Explanation of the reference numerals in the drawings: box-type transformer 1, box body 11, low-voltage bushing 12, external outgoing line row 121, first fixing member 2, fixing part 21, extending part 22, installation opening 221, fourth bolt 23, support insulator 3, second fixing member 4, support part 41, first bolt 411, connecting part 42, side plate 421, bottom plate 422, second bolt 423, vertical plate 424, installation space 425, third bolt 426. Detailed implementation manners

[0030] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without making creative efforts shall fall within the protection scope of the present utility model.

[0031] It should be noted that all the directional indications (such as up, down, left, right, front, back...) in the embodiments of the present utility model are only used to explain the relative positional relationship and movement conditions between components in a specific posture (as shown in the drawings). If the specific posture changes, the directional indications will also change accordingly.

[0032] In the present utility model, unless otherwise clearly defined and limited, terms such as "connection" and "fixation" shall be understood in a broad sense. For example, "fixation" can be a fixed connection, or a fixed connection and integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components or the interaction relationship between two components, unless otherwise clearly defined. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0033] In addition, in the present utility model, descriptions such as "first" and "second" are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the quantity of the indicated technical features. Thus, features defined with "first" and "second" can explicitly or implicitly include at least one such feature. In addition, the meaning of "and / or" appearing throughout the text is that it includes three parallel solutions. Taking "A and / or B" as an example, it includes solution A, or solution B, or the solution where both A and B are satisfied simultaneously. In addition, the technical solutions between various embodiments can be combined with each other, but it must be based on the fact that those of ordinary skill in the art can implement it. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection required by the present utility model.

[0034] Referring to Figures 1 to 5 , to solve the above technical problems, the present utility model proposes a low-voltage bushing external row strengthening and fixing structure, which is applied to a box-type transformer 1. The box-type transformer 1 includes a box body 11 and a low-voltage bushing 12. The low-voltage bushing 12 is arranged on the side wall of the box body 11. The low-voltage bushing 12 is used to lead the low-voltage end lead inside the box body 11 to the outside of the box body 11. An external lead row 121 is provided at one end of the low-voltage bushing 12 away from the box body 11. The low-voltage bushing external row strengthening and fixing structure includes: a first fixing member 2, the first fixing member 2 is fixedly connected to the outer side wall of the box body 11, and the height of the position where the first fixing member 2 is connected to the box body 11 is higher than the height of the position where the low-voltage bushing 12 is connected to the box body 11; a support insulator 3, the support insulator 3 is arranged in the vertical direction, the upper end surface of the support insulator 3 is fixedly connected to one end of the first fixing member 2 away from the box body 11, and the support insulator 3 is placed above the external lead row 121; a second fixing member 4, the second fixing member 4 includes a support portion 41 and a connecting portion 42. The support portion 41 is fixedly connected to the lower end surface of the support insulator 3; the connecting portion 42 is connected to one end of the support portion 41, and the connecting portion 42 extends toward the side of the external lead row 121, and the connecting portion 42 is fixedly connected to the external lead row 121.

[0035] By providing a strengthened fixing structure for external discharge of the low-voltage bushing on the outer side wall of the box body 11, wherein the first fixing member 2 is fixedly connected to the outer side wall of the box body 11 to provide a stable support point; the upper end surface of the support insulator 3 is fixedly connected to one end of the first fixing member 2 away from the box body 11, and both the first fixing member 2 and the support insulator 3 are located above the outgoing line row 121. The second fixing member 4 includes a support portion 41 and a connecting portion 42. The support portion 41 is fixedly connected to the lower end surface of the support insulator 3, and the connecting portion 42 is fixedly connected to the outgoing line row 121 to provide an upward connecting force for the outgoing line row 121, preventing the end of the outgoing line row from sagging downward, improving the cantilever load-bearing strength of the low-voltage bushing 12, preventing the low-voltage bushing 12 from shifting or swaying due to vibration, wind force or other external forces, effectively solving the problem that the low-voltage bushing 12 is prone to displacement or breakage due to the long length and large load of the outgoing line row 121, and avoiding the oil leakage accident of the box body 11 caused by the displacement or breakage of the low-voltage bushing 12, effectively improving the stability of the box-type transformer 1.

[0036] Since the low-voltage bushing 12 needs to be frequently maintained and repaired during the use of the box-type transformer 1, and the direct connection method between the support insulator 3 and the outgoing line row 121 is not convenient for installation and disassembly, the service life of the support insulator 3 will be significantly reduced. In the present utility model, by providing the second fixing member 4 between the support insulator 3 and the outgoing line row 121, when the low-voltage bushing 12 needs to be maintained, only the connection between the outgoing line row 121 and the second fixing member 4 needs to be disassembled, and it is not necessary to disassemble the connection between the second fixing member 4 and the support insulator 3, effectively improving the service life of the support insulator 3.

[0037] Furthermore, the connection position of the second fixing member 4 and the outgoing line row 121 can be adjusted according to different usage scenarios or usage requirements of the box-type transformer 1. For example, it can be adjusted according to the spatial distance between the lower end surface of the support insulator 3 and the upper end surface of the outgoing line row 121, or according to whether the outgoing line row 121 is connected to a copper row or a cable. By choosing to connect the second fixing member 4 to the upper end surface or side surface of the outgoing line row 121, the adaptability and practicality of the strengthened fixing structure for external discharge of the low-voltage bushing can be effectively improved. Furthermore, the second fixing member 4 is made of non-magnetic steel plate or stainless steel plate.

[0038] Refer to Figures 2 to 4 、 Figures 6 to 8, Further illustration shows that the external row strengthening and fixing structure of the low-voltage bushing further includes a first bolt 411. The supporting part 41 is a horizontal plate arranged parallel to the horizontal plane. The supporting part 41 is provided with a first installation through hole, and the lower end surface of the supporting insulator 3 is provided with a first threaded hole corresponding to the first installation through hole. The first bolt 411 sequentially passes through the first installation through hole and the corresponding first threaded hole to fixedly connect the supporting part 41 and the supporting insulator 3.

[0039] By setting the supporting part 41 as a horizontal plate arranged parallel to the horizontal plane for the first bolt 411 to connect with the supporting insulator 3, the installation and connection are convenient, and the supporting part 41 can provide a parallel abutting surface to connect with the supporting insulator 3, which is beneficial to providing stable support for the supporting insulator 3 and improving the structural stability of the external row strengthening and fixing structure of the low-voltage bushing. Specifically, optionally, the first bolt 411 is an M16X35 type stainless steel bolt (316).

[0040] Refer to Figures 1 to 4 , In an embodiment of the present application, the connecting part 42 includes a side plate 421 and a bottom plate 422. One end of the side plate 421 is connected to the supporting part 41, the other end of the side plate 421 extends downward and is connected to the bottom plate 422. The bottom plate 422 and the supporting part 41 are located on the same side of the side plate 421. The bottom plate 422 is arranged parallel to the supporting part 41, and the bottom plate 422 is fixedly connected to the upper end surface of the outgoing line row 121.

[0041] In this embodiment, by setting the connecting part 42 to include a side plate 421 and a bottom plate 422, the supporting part 41 is connected to the supporting insulator 3, the bottom plate 422 is connected to the outgoing line row 121, and the side plate 421 plays the role of connecting the supporting part 41 and the bottom plate 422 and strengthening the connection stability, which can provide a greater connection force for the outgoing line row 121, avoid the end of the outgoing line row from sagging downward, improve the cantilever load-bearing strength of the low-voltage bushing 12, prevent the low-voltage bushing 12 from shifting or shaking due to vibration, wind force or other external forces, and improve the stability of the box-type transformer 1. Moreover, the installation of the connecting part 42 in this embodiment is convenient. Among them, the bottom plate 422 is fixedly connected to the upper end surface of the outgoing line row 121, which will not additionally occupy the position where the outgoing line row 121 is connected to the external copper row, reducing the difficulty of installation and maintenance. When the space distance from the lower end surface of the supporting insulator 3 to the upper end surface of the outgoing line row 121 is sufficient and the outgoing line row 121 is connected by a copper row, it is preferably to adopt the structure of the connecting part 42 in this embodiment, which is convenient for installation and will not hinder the connection between the copper row and the outgoing line row 121, effectively reducing the difficulty of installation and maintenance.

[0042] Specifically and optionally, the number of the side plates 421 is two, and the two side plates 421 are respectively arranged at two ends of the support part 41, and the bottom plate 422 is connected to the ends of the two side plates 421 away from the support part 41, further improving the stability of the second fixing member 4.

[0043] Specifically, the bottom plate 422 is provided with a second installation through hole, and the upper end surface of the outgoing wire row 121 is provided with a second threaded hole corresponding to the second installation through hole. A second bolt 423 is used to sequentially pass through the second installation through hole and the corresponding second threaded hole to fixedly connect the bottom plate 422 and the outgoing wire row 121. Specifically and optionally, a plurality of second installation through holes and second threaded holes are respectively provided, and the second bolts 423, the second installation through holes, and the second threaded holes are arranged in one-to-one correspondence. Specifically, the second bolt 423 is an M6X20 type stainless steel bolt (316).

[0044] Refer to Figure 3 , for further illustration, in the height direction, the axes of the support insulator 3, the support part 41, and the outgoing wire row 121 coincide.

[0045] By the coincidence of the axes of the support insulator 3, the support part 41, and the outgoing wire row 121 in the height direction, the force on the external strengthening fixing structure of the low-voltage bushing is more uniform, which is beneficial to improving the bearing capacity of the external strengthening fixing structure of the low-voltage bushing, enhancing the cantilever load-bearing strength of the low-voltage bushing 12, and strengthening the stability of the box-type transformer 1.

[0046] Refer to Figures 5 to 8 , in another embodiment of the present application, the connecting part 42 includes a vertical plate 424, the vertical plate 424 extends downward at one end of the support part 41, and an installation space 425 for connecting the outgoing wire row 121 is formed between the vertical plate 424 and the support part 41, and the end surface of the vertical plate 424 facing the installation space 425 is fixedly connected to the side surface of the outgoing wire row 121.

[0047] In this embodiment, since the connecting part 42 includes the vertical plate 424, the vertical plate 424 extends downward at one end of the support part 41, and the end surface of the vertical plate 424 facing the installation space 425 is fixedly connected to the side surface of the outgoing wire row 121, the contact area between the second fixing member 4 and the outgoing wire row 121 is larger, effectively increasing the force-bearing area and reducing the risk of structural deformation caused by small local force-bearing area and stress concentration.

[0048] When the spatial distance from the lower end face of the support insulator 3 to the upper end face of the outgoing line row 121 is relatively small, or when a cable is used to be connected to the outgoing line row 121, it is preferable to adopt the structure of the connecting portion 42 of this embodiment. When a cable is used to be connected to the outgoing line row 121, since the number of cables that can be connected is large and the weight is heavy, in this embodiment, by fixedly connecting the vertical plate 424 to the side surface of the outgoing line row 121, the stress area between the second fixing member 4 and the outgoing line row 121 is effectively increased, and the risk of deformation caused by small local stress area and stress concentration is reduced. When the spatial distance from the lower end face of the support insulator 3 to the upper end face of the outgoing line row 121 is relatively small, in this embodiment, by providing the installation space 425 and fixedly connecting the vertical plate 424 to the side surface of the outgoing line row 121, the structure among the support insulator 3, the second fixing member 4 and the outgoing line row 121 becomes more compact.

[0049] Specifically, the vertical plate 424 is provided with a third installation through hole, and the side surface of the outgoing line row 121 is provided with a third threaded hole corresponding to the third installation through hole. A third bolt 426 is used to sequentially pass through the third installation through hole and the corresponding third threaded hole to fixedly connect the vertical plate 424 and the outgoing line row 121. Specifically and optionally, a plurality of the third installation through holes and the third threaded holes are respectively provided, and the third bolts 426, the third installation through holes and the third threaded holes are arranged in one-to-one correspondence. Specifically, the third threaded hole penetrates through the side surface of the outgoing line row 121, which can make the connection between the vertical plate 424 and the outgoing line row 121 more stable. Specifically, the third bolt 426 is an M12X55 type stainless steel bolt (316).

[0050] Refer to Figure 8 , for further illustration, the width of the vertical plate 424 is the same as the width of the support portion 41, and the front end face of the vertical plate 424 is flush with the front end face of the outgoing line row 121.

[0051] By setting the width of the vertical plate 424 to be the same as the width of the support portion 41, it is beneficial to improve the structural stability of the second fixing member 4. The front end face of the vertical plate 424 is flush with the front end face of the outgoing line row 121, which is beneficial to provide stable support for the end of the outgoing line row far from the box body 11. The overall structure is compact, and the problems of displacement or breakage easily caused by the long length and large load of the outgoing line row 121 are solved.

[0052] Refer to Figure 3 and Figure 8 , for further illustration, the support portion 41 and the connecting portion 42 are of an integrally formed structure.

[0053] By setting the support part 41 and the connection part 42 as an integrally formed structure, the number of connection points can be reduced, thereby reducing the risk of failure caused by loose or broken connection points, effectively improving the stability and service life of the second fixing member 4, and reducing the manufacturing and assembly steps of two separate components, thus simplifying the entire manufacturing process.

[0054] Referring to Figures 1 to 8 , for further illustration, the first fixing member 2 includes a fixing part 21 and an extension part 22. One end of the fixing part 21 is fixedly connected to the outer side wall of the box body 11, and the fixing part 21 is perpendicular to the box body 11. The other end of the fixing part 21 is connected with an extension part 22, which extends horizontally away from the fixing part 21. The lower end surface of the extension part 22 is fixedly connected to the upper end surface of the support insulator 3, and an installation opening 221 is provided on the upper end surface of the extension part 22.

[0055] For further illustration, a fourth installation through hole is provided on the lower end surface of the extension part 22, and a fourth threaded hole corresponding to the fourth installation through hole is provided on the upper end surface of the support insulator 3. A fourth bolt 23 sequentially passes through the fourth installation through hole and the corresponding fourth threaded hole to fixedly connect the extension part 22 and the support insulator 3. Specifically, the fourth bolt 23 is an M10X20 type stainless steel bolt (316).

[0056] Specifically and optionally, the fixing part 21 can be a solid column or a hollow column, and the hollow column can be a C-shaped steel or a U-shaped steel arranged in a horizontal posture;

[0057] Specifically and optionally, the cross-sectional shape of the extension part 22 in the height direction is L-shaped or U-shaped;

[0058] Specifically and optionally, the extension part 22 is an L-shaped angle steel or a U-shaped steel, and in the height direction, the cross-sectional shape of the extension part 22 matches the cross-sectional shape of the fixing part 21.

[0059] By providing an installation opening 221 on the upper end surface of the extension part 22, it is convenient for the installation and disassembly between the extension part 22 and the support insulator 3, reducing the difficulty of installation and maintenance.

[0060] For further illustration, the fixing part 21 and the extension part 22 are of an integrally formed structure.

[0061] By configuring the fixing portion 21 and the extension portion 22 as an integrally formed structure, the number of connection points can be reduced, thereby reducing the risk of failure due to loosening or breaking of the connection points, effectively improving the stability and service life of the first fixing support 2, and reducing the number of manufacturing and assembly steps of the two separate components, thereby simplifying the entire manufacturing process.

[0062] See also Figure 1 and Figure 5 Specifically, optionally, the number of the first fixed supports 2, the supporting insulators 3 and the second fixed supports 4 are respectively equal to the number of the outgoing line bars 121, and the first fixed supports 2, the supporting insulators 3 and the second fixed supports 4 are arranged in a one-to-one correspondence with the outgoing line bars 121.

[0063] By arranging the first fixed support 2, the supporting insulator 3 and the second fixed support 4 in one-to-one correspondence with the outgoing line bar 121, each of the outgoing line bar 121 is fully supported by the corresponding first fixed support 2, the supporting insulator 3 and the second fixed support 4, thereby effectively ensuring the stability of each of the outgoing line bar 121, facilitating the management and maintenance of the outgoing line bar 121, and improving the stability and safety of the entire box-type transformer 1.

[0064] The technical principle of the present invention is described above in combination with specific embodiments. These descriptions are only for explaining the principle of the present invention and cannot be interpreted as limiting the protection scope of the present invention in any way. Based on the explanations here, technicians in this field can think of other specific implementation methods of the present invention without creative work, and these methods will fall within the protection scope of the present invention.

Claims

1. A low-voltage bushing outer row reinforcement fixing structure, applied to a box-type transformer, the box-type transformer comprises a box body and a low-voltage bushing, the low-voltage bushing is arranged on the side wall of the box body, the low-voltage bushing is used to lead the low-voltage end lead wire inside the box body to the outside of the box body, and the end of the low-voltage bushing away from the box body is provided with an outer line row, characterized in that: The low-pressure casing outer row reinforcement fixing structure comprises: A first fixing support, wherein the first fixing support is fixedly connected to the outer side wall of the box, and the height of the position where the first fixing support is connected to the box is higher than the height of the position where the low-voltage bushing is connected to the box; A support insulator, wherein the support insulator is arranged in a vertical direction, an upper end surface of the support insulator is fixedly connected to an end of the first fixed support away from the box body, and the support insulator is placed above the outgoing line row; The second fixed support comprises a supporting portion and a connecting portion, wherein the supporting portion is fixedly connected to the lower end surface of the supporting insulator; the connecting portion is connected to one end of the supporting portion, and the connecting portion is extended toward one side of the outgoing line bus, and the connecting portion is fixedly connected to the outgoing line bus.

2. The low-voltage bushing outer row reinforcement fixing structure according to claim 1 is characterized in that: The low-voltage bushing outer row reinforcement fixing structure also includes a first bolt, and the support part is a horizontal plate arranged parallel to the horizontal plane; the support part is provided with a first mounting through hole, and the lower end surface of the support insulator is provided with a first threaded hole corresponding to the first mounting through hole, and the first bolt passes through the first mounting through hole and the corresponding first threaded hole in sequence to fix the support part and the support insulator.

3. The low-voltage bushing outer row reinforcement fixing structure according to claim 2 is characterized in that: The connecting portion includes a side plate and a bottom plate, one end of the side plate is connected to the supporting portion, the other end of the side plate extends downward and is connected to the bottom plate, the bottom plate and the supporting portion are located on the same side of the side plate, the bottom plate is arranged parallel to the supporting portion, and the bottom plate is fixedly connected to the upper end surface of the outgoing line row.

4. The low-voltage bushing outer row reinforcement fixing structure according to claim 3 is characterized in that: In the height direction, the axes of the supporting insulator, the supporting portion and the outgoing line row coincide with each other.

5. The low-voltage bushing outer row reinforcement fixing structure according to claim 2 is characterized in that: The connecting portion includes a vertical plate, which extends downwardly and is arranged at one end of the supporting portion, and an installation space for connecting the outgoing line bus is formed between the vertical plate and the supporting portion, and the end surface of the vertical plate facing the installation space is fixedly connected to the side surface of the outgoing line bus.

6. The low-voltage bushing outer row reinforcement fixing structure according to claim 5 is characterized in that: The width of the vertical plate is the same as that of the supporting portion, and the front end surface of the vertical plate is flush with the front end surface of the outgoing line row.

7. The low-voltage bushing outer row reinforcement fixing structure according to claim 1 is characterized in that: The supporting portion and the connecting portion are an integrally formed structure.

8. The low-voltage bushing outer row reinforcement fixing structure according to claim 1 is characterized in that: The first fixed support includes a fixing portion and an extending portion, one end of the fixing portion is fixedly connected to the outer side wall of the box body, and the fixing portion is arranged perpendicular to the box body, the other end of the fixing portion is connected to the extending portion, and the extending portion extends horizontally in a direction away from the fixing portion, the lower end surface of the extending portion is fixedly connected to the upper end surface of the supporting insulator, and the upper end surface of the extending portion is provided with a mounting opening.

9. The low-voltage bushing outer row reinforcement fixing structure according to claim 8 is characterized in that: The fixing portion and the extending portion are an integrally formed structure.

10. The low-voltage bushing outer row reinforcement fixing structure according to claim 1, characterized in that: The number of the first fixing supports, the supporting insulators and the second fixing supports is respectively equal to the number of the outgoing line bars, and the first fixing supports, the supporting insulators and the second fixing supports are arranged in one-to-one correspondence with the outgoing line bars.

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