Integral assembly structure and method of a transformer tapping lead, and transformer

Abstract

The application provides a whole assembly structure and method of a transformer tapping lead and a transformer, and the whole assembly structure comprises a switch frame for mounting a tapping switch and a lead frame for mounting a tapping lead; the switch frame is a cage-shaped frame, comprising a switch upper support, a vertical support, a lower horizontal support one and a lower horizontal support two; the lead frame comprises two lead vertical frames, one end of the lead vertical frame is connected with the switch frame, the other end is provided with an upper horizontal support at the upper part and a lower horizontal support three at the lower part; the switch upper support, the upper horizontal support and the lower horizontal support three are connected with upper clamping pieces of the transformer; and the lower horizontal support one, the lower horizontal support two and the lower horizontal support three are connected with lower clamping pieces of the transformer. During assembly, the tapping switch and the tapping lead are mounted on the whole assembly structure to be combined into a whole, and then the whole is assembled on the upper and lower clamping pieces of the transformer. The manufacturing of the tapping lead is completed before assembly, so that the manufacturing time of the transformer is greatly shortened and the production efficiency is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of power transformer, in particular to a whole assembly structure and method of transformer tap lead, and further relates to a transformer. BACKGROUND

[0002] At present, most of the tap changers of the extra-high voltage transformer are arranged between the regulating coil and the short shaft wall of the oil tank. In order to meet the electrical insulation requirements of the tap changer and the tap lead, the distance between the regulating coil and the short shaft wall of the oil tank is very large, usually not less than 1200mm. The transformer has large external dimensions, large floor area and high cost. In addition, the tap changer and the tap lead of the extra-high voltage transformer are basically fixed on the upper and lower clamps of the core. During the assembly process of the transformer, the production of the tap lead cannot be started until the coil fitting and the insertion of the upper yoke sheet of the core are completed. The production time of the tap lead is long, the production efficiency is low, and the assembly efficiency of the transformer is affected. SUMMARY

[0003] The present application aims to provide a whole assembly structure of transformer tap lead to overcome the deficiencies in the prior art.

[0004] To solve the above technical problems, the technical scheme of the present application is as follows: a whole assembly structure of transformer tap lead, comprising a switch frame for mounting a tap changer and a lead frame for mounting a tap lead, wherein the lead frame is connected with the switch frame; the switch frame is a cage-shaped frame with a quadrilateral shape, comprising a switch upper support, a vertical support, a lower horizontal support one and a lower horizontal support two, wherein four vertical supports are arranged at the four corners of the cage-shaped frame, the switch upper support is arranged at the top of the vertical supports and connected with the top of the four vertical supports, and the lower horizontal support one and the lower horizontal support two are arranged at the bottom of the vertical supports and connected with the two vertical supports respectively; the lead frame comprises two lead vertical frames arranged in parallel, one end of each of the two lead vertical frames is connected with a vertical support, the upper part of the other end of each of the two lead vertical frames is provided with an upper horizontal support for connecting the two lead vertical frames, and the lower part of the other end of each of the two lead vertical frames is provided with a lower horizontal support three for connecting the two lead vertical frames; the switch upper support and the upper horizontal support are connected with the upper clamp of the transformer, and the lower horizontal support one, the lower horizontal support two and the lower horizontal support three are connected with the lower clamp of the transformer. During operation, the tap changer and the tap lead are mounted on the whole assembly structure to form a whole, the production of the tap lead is carried out on the tooling, and after the production is completed, the whole assembly is mounted on the upper and lower clamps of the transformer to realize the whole assembly of the tap changer and the tap lead. The production of the tap lead can be started without waiting for the completion of the coil fitting and the insertion of the upper yoke sheet of the core. After the whole assembly, the production of the tap lead is completed by connecting the tap lead with the coil, which can greatly shorten the production time of the tap lead and improve the production efficiency.

[0005] Further, the overall assembly structure of the transformer tap lead, the switch frame further comprises a switch lower support, the switch lower support is a I-shaped structure, is arranged in the middle of the vertical support and is connected with the four vertical supports, the switch lower support is provided with a bottom supporting plate for supporting the bottom of the tap switch.

[0006] Further, the overall assembly structure of the transformer tap lead, the switch upper support comprises a support main body, the support main body is a U-shaped opening structure, the outer side of the closed end of the support main body is provided with a mounting interface connected with the upper clamp, the two sides of the support main body are provided with mounting seats connected with the vertical supports, and the two sides of the support main body are further provided with limiting plates located between the mounting seats, the limiting plates can prevent the tap switch from moving during hoisting.

[0007] Further, the overall assembly structure of the transformer tap lead, the lead vertical frame located on the outer side comprises lead vertical support one, lead vertical support three arranged in parallel with the vertical supports and horizontal support one, horizontal support three, horizontal support five arranged in parallel from bottom to top, the lead vertical support one extends to the upper clamp and the lower clamp at both ends, the horizontal support one, the horizontal support three and the horizontal support five are arranged in the middle of the lead vertical support one, one end of the horizontal support one, the horizontal support three and the horizontal support five is connected with the vertical support, and the other end is connected with the lead vertical support one and extends to the outer side of the lead vertical support one, the lead vertical support three is arranged in the middle of the lead vertical frame, one end of the lead vertical support three is connected with the horizontal support one, and the other end is connected with the horizontal support five.

[0008] Further, the overall assembly structure of the transformer tap lead, the lead vertical frame located on the inner side comprises lead vertical support two, lead vertical support four arranged in parallel with the vertical supports and horizontal support seven, horizontal support two, horizontal support four, horizontal support six arranged in parallel from bottom to top, the lead vertical support two is arranged in correspondence with the lead vertical support one at the same height, the horizontal support seven, the horizontal support two, the horizontal support four and the horizontal support six are arranged in the middle of the lead vertical support two, one end of the horizontal support seven, the horizontal support two, the horizontal support four and the horizontal support six is connected with the vertical support, and the other end is connected with the lead vertical support two and extends to the outer side of the lead vertical support two, the lead vertical support four is arranged in the middle of the lead vertical frame, one end of the lead vertical support four is connected with the horizontal support seven, and the other end is connected with the horizontal support six.

[0009] Further, the overall assembly structure of the transformer tap lead, one side of the tap lead is cold pressure welded with a terminal, the terminal is bolted on the switch contact of the tap switch, and the other side of the tap lead is cold pressure connected with the coil head through a terminal sleeve.

[0010] The application also provides an overall assembly method of the transformer tap lead, comprising the following steps:

[0011] S1, assembling the switch frame and the tap switch, and mounting the switch frame on the assembly tooling;

[0012] S2, assembling the lead frame;

[0013] S3, mounting the tapping lead on the lead frame;

[0014] S4, connecting the tapping switch with the tapping lead, cold pressure welding the terminal on one side of the tapping lead, and mounting the terminal on the switch contact of the tapping switch by bolts;

[0015] S5, mounting the integral assembly structure, hoisting the integral assembly structure at the upper support and the upper horizontal support of the switch, disconnecting the switch frame from the assembly tool after the hoisting rope is stressed and tightened, hoisting the integral assembly structure to the transformer body, connecting the integral assembly structure with the upper clamp and the lower clamp, and realizing the connection between the integral assembly structure and the transformer body;

[0016] S6, wiring, cold pressure connecting the other side of the tapping lead with the coil head according to the wiring diagram, and completing the production of the tapping lead.

[0017] Further, the integral assembly method of the transformer tapping lead, the assembly steps of the switch frame and the tapping switch are as follows:

[0018] S11, mounting the upper support and the lower horizontal support one and the lower horizontal support two on the assembly tool;

[0019] S12, mounting the tapping switch on the upper support of the switch;

[0020] S13, mounting four vertical supports between the upper support of the switch and the lower horizontal support one and the lower horizontal support two, and forming a cage-shaped frame;

[0021] S14, mounting the lower support of the switch at the bottom of the tapping switch, and supporting the tapping switch from the bottom.

[0022] Further, the integral assembly method of the transformer tapping lead, the assembly steps of the lead frame are as follows:

[0023] S21, mounting all horizontal supports on the switch frame;

[0024] S22, mounting all lead vertical supports on the horizontal supports;

[0025] S23, mounting the upper horizontal support on the upper part of the lead vertical support one and the lead vertical support two, mounting the lower horizontal support three on the lower part of the lead vertical support one and the lead vertical support two, and setting the anti-sinking support at the bottom of the lower horizontal support three, and completing the assembly of the lead frame.

[0026] The application also provides a transformer comprising the integral assembly structure of the transformer tapping lead, and the oil tank long axis wall of the transformer is provided with a convex part protruding from the oil tank long axis wall, and the tapping switch is compactly arranged between the voltage regulating coil and the convex part of the oil tank long axis wall.

[0027] Compared with the prior art, the present application has the following advantages:

[0028] (1) The tap switch of the present application is arranged between the regulating coil and the long-axis wall of the oil tank. In order to meet the electrical insulation of the tap switch and the tap lead, the long-axis wall of the oil tank is partially protruded. This arrangement has a more compact structure, and the distance between the regulating coil and the short-axis wall of the oil tank can be reduced to about 200 mm, greatly reducing the size and footprint of the transformer, and improving the performance-price ratio of the transformer.

[0029] (2) The tap switch and the tap lead of the present application are arranged compactly, which can greatly reduce the size of the transformer and have a higher performance-price ratio. Meanwhile, the present application adopts a modular design, in which the tap switch and the tap lead are combined into a whole by using a switch frame and a lead frame, and the tap lead is manufactured on a tooling. After the manufacturing is completed, the whole is assembled onto the upper and lower clamps of the transformer, without the need to wait for the coil to be sleeved and the yoke to be inserted before manufacturing, which can shorten the manufacturing time of the transformer and improve the production efficiency of the transformer. BRIEF DESCRIPTION OF DRAWINGS

[0030] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or the prior art description. Obviously, the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained without creative labor.

[0031] Figure 1 It is a front view of the overall assembly structure of the transformer tap lead of the present application.

[0032] Figure 2 It is a top view of the overall assembly structure of the transformer tap lead of the present application.

[0033] Figure 3 It is a B view of Figure 1 .

[0034] Figure 4 It is a K view of Figure 2 .

[0035] Figure 5 It is a structure diagram of the upper switch support of the overall assembly structure of the transformer tap lead of the present application.

[0036] Figure 6 It is a connection diagram of the overall assembly structure of the transformer tap lead of the present application and the assembly tooling.

[0037] Figure 7The wiring principle diagram of the tap lead of the overall assembly structure of the tap lead of the transformer of the present application;

[0038] Figure 8 The schematic diagram of the prior art of the present application;

[0039] In the figure: 1, switch frame; 11, switch upper support; 111, support main body; 112, mounting interface; 113, mounting seat; 114, limiting plate; 12, vertical support; 13, lower horizontal support one; 14, lower horizontal support two; 15, switch lower support; 16, bottom support plate;

[0040] 2, lead frame; 21, upper horizontal support; 22, lower horizontal support three; 23, lead vertical support one; 24, lead vertical support three; 25, horizontal support one; 26, horizontal support three; 27, horizontal support five; 28, lead vertical support two; 29, lead vertical support four; 210, horizontal support two; 211, horizontal support four; 212, horizontal support six; 213, horizontal support seven;

[0041] 3, tap switch; 4, tap lead; 41, wiring terminal; 5, upper clamp; 6, lower clamp; 7, assembly tooling; 8, anti-sinking support; 9, oil tank long shaft wall; 91, convex part. DETAILED DESCRIPTION

[0042] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the scope of protection of the present application.

[0043] Embodiment 1

[0044] As Figures 1-7As shown, the whole assembly structure of a transformer tapping lead includes a switch frame 1 for installing a tapping switch 3 and a lead frame 2 for installing a tapping lead 4, the lead frame 2 is connected with the switch frame 1; the switch frame 1 is a cage-shaped frame with a quadrilateral shape, including a switch upper support 11, vertical supports 12, a lower horizontal support one 13 and a lower horizontal support two 14, the vertical supports 12 are provided with four vertical supports 12 respectively located at the four corners of the cage-shaped frame, the switch upper support 11 is used for supporting the upper part of the tapping switch 3, and is arranged at the top of the vertical supports 12 and connected with the top of the four vertical supports 12, the lower horizontal support one 13 and the lower horizontal support two 14 are arranged in parallel and arranged at the bottom of the vertical supports 12 and connected with two vertical supports 12 respectively; the lead frame 2 includes two parallel lead vertical frames, one end of the two lead vertical frames is connected with one vertical support 12 respectively, the other end is provided with an upper horizontal support 21 for connecting the two lead vertical frames at the upper part and a lower horizontal support three 22 for connecting the two lead vertical frames at the lower part; the switch upper support 11 and the upper horizontal support 21 are connected with an upper clamp 5 of the transformer, and the lower horizontal support one 13, the lower horizontal support two 14 and the lower horizontal support three 22 are connected with a lower clamp 6 of the transformer, that is, the upper part of the switch frame 1 and the lead frame 2 is connected with the upper clamp 5 of the transformer, and the lower part is connected with the lower clamp 6 of the transformer. In working, the tapping switch 3 and the tapping lead 4 are installed on the switch frame 1 and the lead frame 2 to be combined into a whole, and the production of the tapping lead is carried out on the tooling, after the production is completed, the whole assembly is assembled on the upper clamp and the lower clamp of the transformer, the whole assembly of the tapping switch and the tapping lead is realized, and the production of the lead does not need to wait until the transformer completes the coil sleeving and the iron core upper iron yoke insertion piece is completed; after the whole assembly, only one end of the tapping lead is connected with the coil head to complete the production of the tapping lead, the production time of the transformer can be greatly shortened, and the production efficiency is improved. In addition, the tapping switch and the tapping lead are arranged compactly, the size of the transformer can be greatly reduced, and the cost performance is higher.

[0045] In order to make the installation of the tapping switch 3 more stable, the switch frame 1 further includes a switch lower support 15, the switch lower support 15 is in the form of an I-shaped structure, is arranged at the middle part of the vertical supports 12 and is connected with the four vertical supports 12, the switch lower support 15 can further improve the overall structural strength and stability of the switch frame 1, and the switch lower support 15 is provided with a bottom supporting plate 16 for supporting the bottom of the tapping switch 1. The whole structure of the switch frame 1 is simple and compact, the size of the transformer can be greatly reduced, and the cost performance is higher.

[0046] Among them, the tapping lead 4 coil side is cold pressure welded with a terminal 41, the terminal 41 is bolted on the switch contact of the tapping switch 3, the other side of the tapping lead 4 coil is cold pressure connected with the coil head by a terminal sleeve, and the coil head includes Am' coil head, A1 upper coil head, A1 lower coil head, upper voltage regulating coil head, lower voltage regulating coil head and other coil heads.

[0047] Example 2

[0048] Based on the structure of Example 1, such as Figures 1-3 As shown, the upper bracket 11 of the switch includes a bracket body 111, which has a U-shaped opening structure to facilitate the installation of the tap changer 3. The outer side of the closed end of the bracket body 111 is provided with an installation interface 112 that connects to the upper clamp 5. The bracket body 111 has mounting seats 113 on both sides that connect to the vertical bracket 12. The bracket body 111 also has a limiting plate 114 located between the mounting seats 113 on both sides. The limiting plate 114 can prevent the tap changer 3 from moving during hoisting.

[0049] The outer vertical frame of the lead wire includes a lead wire vertical support 1 23 and a lead wire vertical support 3 24 arranged parallel to the vertical support 12, and horizontal supports 1 25, 26, and 27 arranged parallel from bottom to top. The two ends of the lead wire vertical support 1 23 extend to the upper clamp 5 and the lower clamp 6. In order to facilitate the connection between the branch lead wire 4 and the disassembly switch 3, the horizontal supports 1 25, 26, and 27 are located in the middle of the lead wire vertical support 1 23, with one end connected to the vertical support 12 and the other end connected to the lead wire vertical support 1 23 and extending to the outside of the lead wire vertical support 1 23. The lead wire vertical support 3 24 is located in the middle of the lead wire vertical frame, with one end connected to the horizontal support 1 25 and the other end connected to the horizontal support 27.

[0050] The inner vertical frame for lead wires includes a second vertical lead wire support 28 and a fourth vertical lead wire support 29 arranged parallel to the vertical support 12, and horizontal supports 213, 210, 211, and 212 arranged parallel from bottom to top. The second vertical lead wire support 28 is arranged at the same height as the first vertical lead wire support 23. To facilitate the connection between the tap lead 4 and the disassembly switch 3, the horizontal supports 213, 210, 211, and 212 are located in the middle of the second vertical lead wire support 28, with one end connected to the vertical support 12 and the other end connected to the second vertical lead wire support 28 and extending to the outside of the second vertical lead wire support 28. The fourth vertical lead wire support 29 is located in the middle of the vertical frame, with one end connected to the seventh horizontal support 213 and the other end connected to the sixth horizontal support 212. The arrangement of the horizontal supports is based on the arrangement of the tap lead wires. The overall structure of the vertical lead wire frame is simple and has good structural strength.

[0051] The present invention also provides an overall assembly method for transformer tap leads, comprising the following steps:

[0052] S1. Assemble the switch frame 1 and tap changer 3, and install the switch frame 1 on the assembly fixture 7;

[0053] S2, assemble the lead frame 2;

[0054] S3, install the tapping lead 4 on the lead frame 2;

[0055] S4, connect the tapping switch 3 and the tapping lead 4, one side of the tapping lead 4 is cold pressure welded to the terminal 41, and the terminal 41 is bolted to the switch contact of the tapping switch 3;

[0056] S5, install the overall assembly structure, hoist the overall assembly structure at the switch upper support 11 and the upper horizontal support 21, and disconnect the switch frame 1 and the assembly tool 7 after the hoisting rope is stressed and tightened; then hoist the overall assembly structure to the transformer body, connect the overall assembly structure and the upper and lower clamping pieces, that is, the switch upper support 11, the upper horizontal support 21 and the upper clamping piece 5 are connected, and all the lower horizontal supports and the lower clamping piece 6 are connected, so as to realize the connection between the overall assembly structure and the transformer body;

[0057] S6, wiring, the other side of the tapping lead 4 is cold pressure connected with the Am' coil outlet, the A1 upper coil outlet, the A1 lower coil outlet, the upper voltage regulating coil outlet and the lower voltage regulating coil outlet according to the wiring diagram, and the production of the tapping lead is completed.

[0058] The assembly steps of the switch frame 1 and the tapping switch 3 are as follows:

[0059] S11, install the switch upper support 11 and the lower horizontal support one 13 and the lower horizontal support two 14 on the assembly tool 7; the switch upper support 11 is connected with the assembly tool 7 through the mounting interface 112, and in the embodiment, the switch upper support 11, the lower horizontal support one 13 and the lower horizontal support two 14 are only installed with the assembly tool 7 through four screws, so that the assembly and disassembly are simple and convenient;

[0060] S12, install the tapping switch 3 on the switch upper support 11;

[0061] S13, install four vertical supports 12 between the switch upper support 11 and the lower horizontal support one 13 and the lower horizontal support two 14 to form a cage-shaped frame;

[0062] S14, install the switch lower support 15 at the bottom of the tapping switch 3 and fix it at the middle part of the vertical support 12 to support the tapping switch 3 from the bottom.

[0063] The assembly steps of the lead frame 2 are as follows:

[0064] S21, install all the horizontal supports on the switch frame 1;

[0065] S22, install all the lead vertical supports on the horizontal supports;

[0066] S23. Install an upper horizontal bracket 21 on the upper part of the lead wire vertical bracket 1 23 and the lead wire vertical bracket 28, and install a lower horizontal bracket 3 22 on the lower part. Set an anti-sinking support 8 at the bottom of the lower horizontal bracket 3 22. The anti-sinking support 8 and the lower horizontal bracket 3 22 do not need to be installed and are connected in contact to complete the assembly of the lead wire frame 2.

[0067] The overall assembly method is simple and easy to operate, and the assembly tooling has a simple structure and is easy to assemble and disassemble, which greatly improves production efficiency.

[0068] Example 3

[0069] Based on the structure of Embodiment 1 or Embodiment 2, such as Figures 1-3 As shown, the present invention also provides a transformer, which includes the above-mentioned integral assembly structure of the transformer tap leads, and one end of the long shaft wall 9 of the transformer tank is provided with a protrusion 91 protruding from the long shaft wall 9 of the tank. The tap changer 3 is compactly arranged between the voltage regulating coil and the protrusion 91 of the long shaft wall 9 of the tank; it can meet the electrical insulation of the tap changer 3 and the tap leads 4, and the structure is more compact. The distance between the voltage regulating coil and the short shaft wall of the tank can be reduced to about 200mm, which greatly reduces the external size and floor space of the transformer, and improves the cost performance of the transformer.

[0070] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0071] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. An integral assembly structure for transformer tap lines, characterized in that: The device includes a switch frame for mounting a tap changer and a lead frame for mounting tap changer leads, the lead frame being connected to the switch frame. The switch frame is a quadrilateral cage-like frame, including an upper switch support, vertical supports, lower horizontal supports one, and lower horizontal supports two. Four vertical supports are provided, located at the four corners of the cage. The upper switch support supports the upper part of the tap changer, is located at the top of the vertical supports and connects to the tops of the four vertical supports. Lower horizontal supports one and two are arranged in parallel, located at the bottom of the vertical supports, and each connects to two vertical supports. The lead frame includes two parallel vertical lead frames, one end of each vertical lead frame connected to a vertical support, and the other end has an upper horizontal support connecting the two vertical lead frames at the top and a lower horizontal support connecting the two vertical lead frames at the bottom. The upper switch support and upper horizontal supports are connected to the upper clamp of the transformer, and lower horizontal supports one, two, and three are connected to the lower clamp of the transformer. The overall assembly method for the transformer tap lead assembly structure includes the following steps: S1. Assemble the switch frame and tap changer, and install the switch frame on the assembly fixture; S2, Assemble the lead frame; S3. Install tap leads on the lead frame; S4. Connect the tap changer to the tap lead. Cold press and weld the terminal block on one side of the tap lead. Install the terminal block on the switch contact of the tap changer with bolts. S5. Install the overall assembly structure. Lift the switch upper bracket and upper horizontal bracket as a whole. After the lifting rope is under tension and tightened, disconnect the switch frame from the assembly tooling. Then, lift the overall assembly structure onto the transformer body and connect the overall assembly structure with the upper clamp and lower clamp to achieve the connection between the overall assembly structure and the transformer body. S6. Connect the other side of the tap lead to the coil outlet using a sleeve according to the wiring diagram to complete the tap lead fabrication.

2. The integral assembly structure of the transformer tap lead according to claim 1, characterized in that: The switch frame also includes a lower switch bracket, which is an I-shaped structure, located in the middle of the vertical bracket and connected to four vertical brackets. The lower switch bracket is provided with a base plate for supporting the bottom of the tap changer.

3. The integral assembly structure of the transformer tap lead according to claim 1, characterized in that: The switch upper bracket includes a bracket body, which has a U-shaped opening structure. The outer side of the closed end of the bracket body is provided with an installation interface for connecting with the upper clamp. The bracket body is provided with mounting seats on both sides for connecting with the vertical bracket. The bracket body is also provided with limiting plates located between the mounting seats on both sides. The limiting plates can prevent the tap changer from moving during hoisting.

4. The integral assembly structure of the transformer tap lead according to claim 1, characterized in that: The outer vertical frame of the lead wire includes a lead wire vertical support 1 and a lead wire vertical support 3 arranged parallel to the vertical support, and a horizontal support 1, a horizontal support 3, and a horizontal support 5 arranged parallel from bottom to top. The two ends of the lead wire vertical support 1 extend to the upper clamp and the lower clamp. The horizontal support 1, the horizontal support 3, and the horizontal support 5 are located in the middle of the lead wire vertical support 1, with one end connected to the vertical support and the other end connected to the lead wire vertical support 1 and extending to the outside of the lead wire vertical support 1. The lead wire vertical support 3 is located in the middle of the lead wire vertical frame, with one end connected to the horizontal support 1 and the other end connected to the horizontal support 5.

5. The integral assembly structure of the transformer tap lead according to claim 4, characterized in that: The inner vertical frame of the lead wire includes a second and a fourth vertical frame of the lead wire, which are arranged parallel to the vertical frame, and a seventh, a second, a fourth, and a sixth horizontal frame, which are arranged parallel from bottom to top. The second vertical frame of the lead wire is arranged at the same height as the first vertical frame of the lead wire. The seventh, second, fourth, and sixth horizontal frames of the lead wire are located in the middle of the second vertical frame of the lead wire, with one end connected to the vertical frame and the other end connected to the second vertical frame of the lead wire and extending to the outside of the second vertical frame of the lead wire. The fourth vertical frame of the lead wire is located in the middle of the vertical frame of the lead wire, with one end connected to the seventh horizontal frame and the other end connected to the sixth horizontal frame.

6. The integral assembly structure of the transformer tap lead according to claim 1, characterized in that: One side of the tap lead is cold-pressed with a terminal block, which is bolted to the switch contact of the tap changer. The other side of the tap lead is cold-pressed to the coil outlet with a terminal sleeve.

7. The assembly method of the overall assembly structure of the transformer tap lead according to claim 1, characterized in that, The assembly steps of the switch frame and the tap changer are as follows: S11. Install the upper switch bracket and lower horizontal bracket one and lower horizontal bracket two onto the assembly fixture; S12. Install the tap changer onto the switch bracket; S13. Install four vertical supports between the upper support and the lower horizontal support one and the lower horizontal support two of the switch to form a cage-like frame; S14. Install a switch bracket at the bottom of the tap changer to provide bottom support for the tap changer.

8. The assembly method of the overall assembly structure of the transformer tap lead according to claim 1, characterized in that, The assembly steps of the lead frame are as follows: S21. Install all horizontal supports on the switch frame; S22. Install all lead wire vertical supports on the horizontal support; S23. Install an upper horizontal bracket on the upper part of the lead wire vertical bracket 1 and the lead wire vertical bracket 2, and install a lower horizontal bracket 3 on the lower part. Set an anti-sinking support at the bottom of the lower horizontal bracket 3 to complete the assembly of the lead wire frame.

9. A transformer, characterized in that: The transformer includes an integral assembly structure for the tap changer leads as described in any one of claims 1 to 6, wherein one end of the long shaft wall of the transformer tank is provided with a protrusion protruding from the long shaft wall of the tank, and the tap changer is compactly arranged between the voltage regulating coil and the protrusion of the long shaft wall of the tank.

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