Dry-type transformer with modular assembled enclosure

Abstract

The application discloses a dry-type transformer with a modular assembling shell, which comprises a transformer body, and a displacement support is arranged at the bottom of the transformer body; the application relates to the technical field of dry-type transformer installation, and has the beneficial effects that the shell is composed of a displacement support, a bottom sealing frame, a side sealing frame, a mounting frame and a top sealing plate; all the components, such as the side sealing frame, the mounting frame and the top sealing plate, are independent modules which can be disassembled and assembled; the constituent parts in each module can be independently transported and assembled at the installation site; the occupied space is small during transportation, and the modules are convenient to enter narrow passages, such as basements; the width of the side sealing frame can be flexibly adjusted by switching between the first and second states of the coincident panel group in the side sealing frame; the size of the mounting frame and the top sealing plate can also be adjusted by using the coincident panel group; and the height of the shell can be changed by rotating the coincident panel group by 90 degrees.

Description

Technical Field

[0001] This invention relates to the field of dry-type transformer installation technology, and in particular to a dry-type transformer with a modular assembly shell. Background Technology

[0002] Dry-type transformers are widely used in power distribution scenarios such as high-rise buildings, subways, and basements. Their enclosures must meet requirements for protection, heat dissipation, installation, and transportation. Traditional enclosures primarily consist of welded square tubular frames combined with panels, a common industry structure, such as:

[0003] 1. A dry-type transformer housing with easy assembly, disclosed in CN121416262A, relates to the field of dry-type transformer technology. It includes side plates, each with two quick-clamping mechanisms movably clamped at both ends. One end of each quick-clamping mechanism passes through the side plate and is connected to a quick-locking mechanism. Each quick-locking mechanism is movably clamped at one end of a top plate, which is positioned between the two side plates. One end of one side plate is movably fitted with a switch cabinet door via a hinge. By placing the quick-clamping mechanism inside a first through hole in the side plate, pressing the quick-clamping mechanism causes a rectangular clamping post to pass through a rectangular slot and clamp inside the first slot. After the quick-clamping mechanism is installed, one end of the quick-locking mechanism connected to the other end of the quick-clamping mechanism clamps into a second slot inside a circular groove, thus achieving rapid installation and disassembly.

[0004] 2. A highly stable dry-type transformer protective shell with publication number CN107993796B includes a support block, a connecting plate, a spring, a sliding block, a door panel body, a protrusion, a protective block, an electric push rod, a limiting post, heat dissipation blades, a cleaning roller, and a frame. The outer end of the support block is connected to the connecting plate, and the inner end of the connecting plate is provided with the door panel body, the spring, and the sliding block. The upper end of the sliding block is equipped with a spring, and the upper end of the door panel body is fixed with a protrusion. The protrusion is located at the top of the support block for easy opening. The lower end of the protective block is embedded with an electric push rod, and the lower end of the electric push rod is equipped with a limiting post. The lower end of the limiting post is fitted with a frame, and the lower end of the frame is provided with a cleaning roller. The lower end of the cleaning roller is equipped with heat dissipation blades. This design allows for rapid cleaning. This invention is convenient to use, easy to operate, improves the door opening effect, and enables rapid cleaning.

[0005] Including but not limited to the aforementioned existing technologies, each wall of the transformer casing is generally made of a single metal plate. In the factory, large-sized metal plates are welded or bolted to the casing frame to form a whole casing, which is then transported to the site for hoisting and installation. This process takes up a lot of space and is difficult. At the same time, since the casing wall is a single metal plate, if there is any local damage, the entire casing wall or even the entire casing needs to be replaced. Even if the transformer casing is made of multiple equally sized casing walls spliced ​​together by the edges, when matching transformers of different sizes, it is usually necessary to reprocess and produce all the spliced ​​metal plates of the entire casing. It is difficult to adapt to the new size by making local adjustments based on the original metal plates, which to some extent leads to a waste of resources.

[0006] Furthermore, in order to fix the transformer, two bases that match the transformer channel steel are usually welded to the bottom of the inner side of the casing. Since the transformer capacity is different, the spacing between the two channel steels is different, and the length of the channel steel is different for transformers of different capacities. Therefore, in addition to making metal casings of different sizes, it is also necessary to cut materials and make bases of different sizes for installing the transformer, which further wastes resources. In view of this, we conducted in-depth research on the above problems, which led to this case. Summary of the Invention

[0007] The purpose of this invention is to solve the above-mentioned problems by designing a dry-type transformer with a modular assembly shell. This solves the problems of existing dry-type transformer shells, which are difficult to transport due to their integral box wall and fixed base structure, require replacement of the whole unit when damaged, are difficult to flexibly adapt to different transformer sizes through local adjustments, and require repeated custom processing of the base, resulting in resource waste.

[0008] The technical solution of the present invention to achieve the above objectives is as follows: a dry-type transformer with a modular assembly shell, including a transformer body, a displacement support is provided at the bottom of the transformer body, the displacement support and the bottom sealing frame form a tank bottom, side sealing frames are symmetrically arranged on both sides of the tank bottom, an installation frame is installed on the tank bottom and matched with the side sealing frames, and a top sealing plate is installed on the top of the installation frame and the side sealing frames.

[0009] The side sealing frame includes a side frame body, and a side center crossbeam is provided on the inner wall of the side frame body. Overlapping panels are filled between the side frame body and the side center crossbeam.

[0010] The overlapping panel assembly includes a first end outer plate and a second end outer plate. A first end inner plate is provided on one side of the first end outer plate and between it and the second end outer plate. The first end outer plate and the first end inner plate are connected by a vertical plate. A support member is provided on the first end inner plate. The inner sidewall of the second end outer plate is movably attached to the support member. The overlapping panel assembly has a first state and a second state.

[0011] The first state is that the second end outer panel fully covers the first end inner panel, that is, the second end outer panel and the first end outer panel are in close contact with each other;

[0012] The second state is that the second end outer plate partially covers the first end inner plate, that is, there is a gap between the second end outer plate and the first end outer plate, and a connecting sealing plate is provided in the gap.

[0013] Preferably, the side frame includes a bottom side beam, side columns are longitudinally arranged on both sides of the bottom side beam, the middle side beam is installed on the side columns, and a top side beam is installed on the top of the side columns parallel to the bottom side beam. The top side beam has an inner extension edge. The distance between the first end inner plate and the second end outer plate is smaller than the width of the bottom side beam, the middle side beam, and the top side beam.

[0014] Preferably, a first connecting edge is provided on one side of the first end outer plate, the upper and lower ends of the upright plate and the first end inner plate, and the first connecting edge is movably attached to the side bottom crossbeam, the side middle crossbeam and the side top beam. A second connecting edge is provided on the second end outer plate except for the part close to the first end outer plate. An overlapping edge is provided on the inner wall surface of the second end outer plate, and the overlapping edge is movably attached to the first connecting edge. The second connecting edge is movably attached to the side bottom crossbeam, the side middle crossbeam and the side top beam.

[0015] Preferably, the bottom frame includes a rectangular base, the side bottom beam is movably attached to the upper wall of the rectangular base, a center seat is installed on the inner wall of the rectangular base, the displacement support includes a limiting drive structure installed in the center seat, the limiting drive structure is provided with two parallel first feet, each of the first feet is connected to a second foot through a length adjustment structure, a bottom edge plate is provided on the inner wall of the rectangular base and on both sides of the displacement support, a bottom middle plate is provided on the inner wall of the rectangular base and between the two first feet, and a U-shaped sealing plate matching the displacement support is filled between the bottom edge plate and the bottom middle plate.

[0016] Preferably, the limiting drive structure includes two internal threaded sleeves, which are respectively fixedly installed on the opposite wall surfaces of the first foot. A pull rod is movably inserted into the two internal threaded sleeves via threads. A bracket is movably inserted into the center seat. One end of the bracket is fitted into the center part of the pull rod via a bearing. Guide rods pass through the two first foot seats and the two second foot seats.

[0017] Preferably, the length adjustment structure includes a hollow rectangular sleeve fixedly installed on the inner top surface of the first foot, the upper wall of the hollow rectangular sleeve having an clearance notch, a movable strip being movably inserted into the hollow rectangular sleeve, one end of the movable strip being fixedly installed on the inner top surface of the second foot, an elongated hole being opened on the movable strip, an adjusting bolt being movably inserted through the elongated hole and the hollow rectangular sleeve, and an adjusting nut being movably fitted onto the adjusting bolt via threads.

[0018] Preferably, each mounting frame includes a bottom crossbeam of the mounting surface, which is movably fitted onto a rectangular base. Vertical mounting columns are longitudinally arranged on both sides of the bottom crossbeam, and these columns are movably fitted onto side columns. A top mounting beam is installed on the top side wall of each column, parallel to the bottom crossbeam. A U-shaped support is provided on the inner side of the top mounting beam. Two door columns are arranged between the bottom and top crossbeams, and a double door is arranged between the two door columns. Mounting sealing plates are provided on the upper and lower sides of the double door, as well as between the door columns and the mounting columns. Cable clamp brackets are movably fitted onto the two door columns.

[0019] Preferably, the top sealing plate includes a top crossbeam that is attached to the upper wall of the inner extension edge, a retaining strip is provided on the lower wall of the top crossbeam, the retaining strip is movably attached to the U-shaped support, a limiting edge is provided on the inner side of the top crossbeam, and multiple top cover plates are movably attached to both sides of the upper wall of the limiting edge, and an upper outlet epoxy board is provided on one of the multiple top cover plates.

[0020] Preferably, heat dissipation holes are provided on the first end outer plate, the second end outer plate, and the first end inner plate.

[0021] Preferably, the top cover has a hoisting hole.

[0022] The dry-type transformer with a modular assembly shell manufactured using the technical solution of this invention consists of a position support, a bottom sealing frame, side sealing frames, a mounting frame, and a top sealing plate. All components, including the side sealing frames, mounting frames, and top sealing plates, are detachable and assembleable independent modules. The components in each module can be transported independently and then assembled on-site. This minimizes space occupation during transportation and facilitates access to narrow passages such as basements. The width of the side sealing frame can be flexibly adjusted by switching between the first and second states of the overlapping assembly. The mounting frame and top sealing plate can also be sized using the overlapping assembly. Furthermore, the height of the shell can be changed by rotating the overlapping assembly by 90 degrees, allowing the same set of overlapping assembly to match transformers of different sizes. The position support also has an adjustment function, eliminating the need for reprocessing and improving the versatility of the shell components. Attached Figure Description

[0023] Figure 1 This is a top-view structural diagram of a dry-type transformer with a modularly assembled outer shell as described in this invention.

[0024] Figure 2 This is a schematic diagram of the overall top-view structure of a dry-type transformer with a modular assembly shell as described in this invention.

[0025] Figure 3 This is an exploded structural diagram of the side sealing frame of a dry-type transformer with a modular assembly shell as described in this invention.

[0026] Figure 4 This is an exploded structural diagram of the overlapping panel assembly of a dry-type transformer with a modular assembled shell, as described in this invention.

[0027] Figure 5 This is a schematic diagram of the installation state of the transformer body of a dry-type transformer with a modular assembly shell as described in this invention.

[0028] Figure 6 This is a schematic diagram of the connection structure between the bottom of the tank and the mounting frame on one side of a dry-type transformer with a modular assembly shell, as described in this invention.

[0029] Figure 7 This is a schematic diagram of the connection structure between the bottom of the tank and the mounting frame on the other side of a dry-type transformer with a modular assembly shell as described in this invention.

[0030] Figure 8 This is a schematic diagram of the exploded bottom structure of a dry-type transformer with a modular assembly shell as described in this invention.

[0031] Figure 9 This is a bottom view of the displacement support structure of a dry-type transformer with a modular assembly shell as described in this invention.

[0032] Figure 10 This is a schematic diagram of the connection structure between the bottom of the tank, the mounting frame, and the side sealing frame of a dry-type transformer with a modular assembly shell as described in this invention.

[0033] Figure 11 This is an exploded structural diagram of the top sealing plate, mounting frame, and side sealing frame of a dry-type transformer with a modular assembly shell according to the present invention.

[0034] Figure 12 This is a schematic diagram of the connection structure between the top sealing plate, the mounting frame, and the side sealing frame of a dry-type transformer with a modular assembly shell as described in this invention.

[0035] Figure 13 This invention relates to a dry-type transformer with a modularly assembled housing. Figure 11 Enlarged view of a portion of point A in the middle.

[0036] Figure 14 This invention relates to a dry-type transformer with a modularly assembled housing. Figure 12 Enlarged view of section B in the middle.

[0037] In the picture:

[0038] 1. Transformer body;

[0039] 2. Displacement support;

[0040] 21. Limit drive structure; 211. Internal threaded sleeve; 212. Pull screw; 213. Insert bracket; 214. Guide rod;

[0041] 22. First foot;

[0042] 23. Length adjustment structure; 231. Hollow rectangular sleeve; 232. Clearance notch; 233. Moving bar; 234. Oblong hole; 235. Adjusting bolt; 236. Adjusting nut.

[0043] 24. Second leg seat;

[0044] 3. Bottom frame; 31. Rectangular base; 32. Center seat; 33. Bottom edge plate; 34. Bottom center plate; 35. U-shaped sealing plate;

[0045] 4. Side sealing frame;

[0046] 41. Side frame; 411. Side middle crossbeam; 412. Side bottom crossbeam; 413. Side column; 414. Side top beam; 415. Inner extension edge.

[0047] 42. Overlapping panel assembly; 421. First end outer panel; 422. Second end outer panel; 423. First end inner panel; 424. Vertical panel; 425. Support component; 426. First connecting edge; 427. Second connecting edge; 428. Overlapping edge; 429. Heat dissipation hole.

[0048] 43. Interval section; 44. Connecting sealing plate;

[0049] 5. Mounting frame; 51. Bottom beam of mounting surface; 52. Upright column of mounting surface; 53. Top beam of mounting surface; 54. U-shaped bracket; 55. Door upright; 56. Double door; 57. Sealing plate of mounting surface; 58. Cable clamp bracket.

[0050] 6. Top sealing plate, 61. Top crossbeam, 62. Clip strip, 63. Limiting edge, 64. Top cover, 65. Outlet epoxy board, 66. Lifting hole. Detailed Implementation

[0051] The present invention will now be described in detail with reference to the accompanying drawings, such as... Figure 1-14As shown, a dry-type transformer with a modularly assembled housing.

[0052] Those skilled in the art can connect the components in this case sequentially. The specific connection and operation sequence should refer to the working principle described below. The detailed connection methods are well-known technologies in the field. The working principle and process are mainly described below.

[0053] Example:

[0054] A dry-type transformer with a modular assembly shell includes a transformer body 1. A displacement support 2 is provided at the bottom of the transformer body 1. The displacement support 2 and the bottom sealing frame 3 form the bottom of the tank. Side sealing frames 4 are symmetrically arranged on both sides of the bottom of the tank. An installation frame 5 is installed on the bottom of the tank and matches the side sealing frames 4. A top sealing plate 6 is installed on the top of the installation frame 5 and the side sealing frames 4.

[0055] It should be noted that, firstly, the position support 2 is adjusted according to the spacing and length of the channel steel below the transformer body 1 of different capacity sizes. Then, the bottom frame 3 is made according to the design size of the outer shell. The position support 2 and the bottom frame 3 are welded together to form the bottom of the box. Then, the various components in the side frame 4, the mounting frame 5 and the top plate 6 are spliced ​​together to form independent modules. Then, the bottom of the box, the side frame 4, the mounting frame 5 and the top plate 6 are modularly spliced ​​together to form the outer shell for storing the transformer body 1. The position support 2 can match transformer bodies 1 of different sizes, thus improving the applicability.

[0056] The components of the side sealing frame 4, mounting frame 5, and top sealing plate 6 can be disassembled for transportation and assembled on-site at the dry-type transformer installation site. This facilitates transportation to sites with limited space and solves the problem of the large space occupied by the overall casing during transportation, making it difficult to enter narrow passages such as basements. The following is a detailed explanation of each module.

[0057] The side sealing frame 4 includes a side frame 41, a side middle crossbeam 411 is provided on the inner wall of the side frame 41, and an overlapping splicing plate assembly 42 is filled between the side frame 41 and the side middle crossbeam 411.

[0058] The overlapping panel assembly 42 includes a first end outer plate 421 and a second end outer plate 422. A first end inner plate 423 is provided on one side of the first end outer plate 421 and between it and the second end outer plate 422. The first end outer plate 421 and the first end inner plate 423 are connected by a vertical plate 424. A support member 425 is provided on the first end inner plate 423. The inner sidewall of the second end outer plate 422 is movably attached to the support member 425. The overlapping panel assembly 42 has a first state and a second state.

[0059] The first state is that the second end outer plate 422 fully covers the first end inner plate 423, that is, the second end outer plate 422 and the first end outer plate 421 are in contact with each other.

[0060] The second state is that the second end outer plate 422 partially covers the first end inner plate 423, that is, there is a gap 43 between the second end outer plate 422 and the first end outer plate 421, and a connecting sealing plate 44 is provided in the gap 43.

[0061] It should be noted that the overlapping panel assembly 42 consists of a first end outer panel 421, a second end outer panel 422, a first end inner panel 423, a vertical plate 424, and a support member 425. In the first state, the second end outer panel 422 slides along the support member 425 via its inner wall, completely covering the first end inner panel 423 and fitting perfectly with the first end outer panel 421, minimizing the width of the side sealing frame 4. When the width needs to be adjusted to accommodate different design dimensions, the second end outer panel 422 can be pulled to one side to a specific position. At this time, a gap 43 appears between the first end outer panel 421 and the second end outer panel 422, and a connecting sealing plate 44 is embedded in this gap 43, widening the width of the overlapping panel assembly 42 and entering the second state. The width of the side sealing frame 4 can be adjusted by switching between two working states of the overlapping panel assembly 42. This allows the width of the side sealing frame 4 to be adjusted, enabling the same overlapping panel assembly 42 to match transformer bodies 1 of different sizes and specifications without the need for reprocessing the overlapping panel assembly 42. This improves the versatility of parts and reduces resource waste. The connecting sealing plate 44 is used to shield the interval section 43. The outer walls of the connecting sealing plate 44, the first end outer plate 421, and the second end outer plate 422 are on the same plane, improving aesthetics. Through this technical solution, when the overlapping panel assembly 42 is rotated 90 degrees, the height of the outer shell can be changed. Operators can determine the usage angle themselves according to the design dimensions of the modular assembly outer shell.

[0062] Specifically, the side frame 41 includes a bottom side beam 412, side columns 413 are longitudinally arranged on both sides of the bottom side beam 412, a middle side beam 411 is installed on the side columns 413, a top side beam 414 is installed on the top of the side columns 413 parallel to the bottom side beam 412, and an inner extension edge 415 is provided on the top side beam 414. The distance between the inner plate 423 at the first end and the outer plate 422 at the second end is smaller than the width of the bottom side beam 412, the middle side beam 411 and the top side beam 414.

[0063] It should be noted that after the overlapping panel assembly 42 is adjusted to the target size, the dimensions of the side middle crossbeam 411, side bottom crossbeam 412, side column 413 and side top beam 414 can be determined and processed according to the final dimensions of the overlapping panel assembly 42; the side middle crossbeam 411, side bottom crossbeam 412, side column 413 and side top beam 414 are overlapped and through holes are opened for bolt and nut installation, so as to realize the connection of the side middle crossbeam 411, side bottom crossbeam 412, side column 413 and side top beam 414;

[0064] Specifically, a first connecting edge 426 is provided on one side of the first end outer plate 421, the upper and lower ends of the upright plate 424 and the first end inner plate 423. The first connecting edge 426 is movably attached to the side bottom crossbeam 412, the side middle crossbeam 411 and the side top beam 414. A second connecting edge 427 is provided on the second end outer plate 422 except for the part near the first end outer plate 421. An overlapping edge 428 is provided on the inner side wall of the second end outer plate 422. The overlapping edge 428 is movably attached to the first connecting edge 426. The second connecting edge 427 is movably attached to the side bottom crossbeam 412, the side middle crossbeam 411 and the side top beam 414.

[0065] It should be noted that the first end outer plate 421, the upright plate 424, the first end inner plate 423, the first connecting edge 426, and the second end outer plate 422 and the second connecting edge 427 can be connected to each other by welding or other means. During assembly, the first connecting edge 426 and the second connecting edge 427 are attached to the sections of the side bottom crossbeam 412, the side middle crossbeam 411, and the side top beam 414. The overlapping edge 428 is always attached to the first connecting edge 426. Through holes are opened in the sections of the first connecting edge 426, the second connecting edge 427, the overlapping edge 428, the side bottom crossbeam 412, the side middle crossbeam 411, and the side top beam 414, and bolts and nuts are used to realize the splicing between the overlapping panel groups 42 and between the side frame 41, the side middle crossbeam 411 and the overlapping panel groups 42.

[0066] Specifically, the bottom frame 3 includes a rectangular base 31, and a side bottom crossbeam 412 is movably attached to the upper wall of the rectangular base 31. A center seat 32 is installed on the inner wall of the rectangular base 31. The displacement support 2 includes a limiting drive structure 21 installed in the center seat 32. Two parallel first feet 22 are provided on the limiting drive structure 21. A second foot 24 is connected to each first foot 22 through a length adjustment structure 23. A bottom edge plate 33 is provided on the inner wall of the rectangular base 31 and on both sides of the displacement support 2. A bottom middle plate 34 is provided on the inner wall of the rectangular base 31 and between the two first feet 22. A U-shaped sealing plate 35 matching the displacement support 2 is filled between the bottom edge plate 33 and the bottom middle plate 34.

[0067] It should be noted that the rectangular base 31 and the side bottom crossbeam 412 can be spliced ​​by opening corresponding through holes and then installing bolts and nuts. The distance between the two first feet 22 can be adjusted by operating the limit drive structure 21. With the connection of the length adjustment structure 23, the distance between the two second feet 24 is thus adjusted, so that the two first feet 22 and the two second feet 24 can be matched with transformer bodies 1 of different capacities. The channel steel on the transformer body 1 is fitted onto the first feet 22 and the second feet 24, and the first feet 22 and the second feet 24 can be... Multiple mounting holes are provided. The mounting holes of the first foot 22 and the second foot 24 are connected to the mounting holes on the transformer channel steel by bolts and nuts to fix the transformer body 1 to the first foot 22 and the second foot 24. The bottom edge plate 33, the bottom middle plate 34 and the U-shaped sealing plate 35 are used to seal the space between the rectangular base 31 and the displacement support 2. The rectangular base 31, the bottom edge plate 33, the bottom middle plate 34 and the U-shaped sealing plate 35 are manufactured according to the design dimensions. The displacement support 2 is welded to the rectangular base 31, and then the bottom edge plate 33, the bottom middle plate 34 and the U-shaped sealing plate 35 are installed to realize the production of the bottom sealing frame 3.

[0068] Specifically, the limit drive structure 21 includes two internal threaded sleeves 211, which are fixedly installed on the opposite wall surfaces of the first foot 22. A pull rod 212 is movably inserted into the two internal threaded sleeves 211 via threads. A bracket 213 is movably inserted into the center seat 32. One end of the bracket 213 is fitted into the center of the pull rod 212 via a bearing. Guide rods 214 pass through the two first foot 22 and the two second foot 24.

[0069] It should be noted that the internal threaded sleeve 211 and the pull rod 212 are connected by threaded insertion, so that the two internal threaded sleeves 211 are at the same distance from the bracket 213 at the center of the pull rod. Through the matching of the bracket 213 and the center seat 32, the limit drive structure 21 is installed in the center of the bottom frame 3, ensuring the standard of the installation position of the transformer body 1. When the limit drive structure 21 is adjusted, the pull rod 212 is rotated. Since the threads at both ends of the pull rod 212 are turned in opposite directions and respectively mesh with the internal threaded sleeves 211 on the two first feet 22, the two first feet 22 are driven to move closer or further away from each other along the guide rod 214. This accurately adapts to the installation dimensions of the bottom channel steel of transformers of different capacities, thereby expanding the adaptability range of the transformer support 2.

[0070] Specifically, the length adjustment structure 23 includes a hollow rectangular sleeve 231 fixedly installed on the inner top surface of the first foot 22. The upper wall of the hollow rectangular sleeve 231 is provided with an avoidance notch 232. A moving strip 233 is movably inserted into the hollow rectangular sleeve 231. One end of the moving strip 233 is fixedly installed on the inner top surface of the second foot 24. An elongated hole 234 is provided on the moving strip 233. An adjusting bolt 235 movably passes through the elongated hole 234 and the hollow rectangular sleeve 231. An adjusting nut 236 is movably fitted onto the adjusting bolt 235 through a thread.

[0071] It should be noted that the length adjustment structure 23 is used to adjust the distance between the first foot 22 and the second foot 24 to match the length of the bottom channel steel of different transformers. When the adjusting nut 236 is loosened, the adjusting bolt 235 can slide relative to the moving bar 233 in the elongated hole 234. At this time, the moving bar 233 moves in the hollow rectangular sleeve 231 to change the distance between the second foot 24 and the first foot 22. The clearance notch 232 is used to reduce the height of the top of the adjusting bolt 235 to avoid interference with the channel steel on the transformer body 1. After adjusting to the target position, tighten the adjusting nut 236 to lock the adjusting bolt 235, so that the moving bar 233 is fixed to the hollow rectangular sleeve 231.

[0072] Specifically, each mounting frame 5 includes a bottom beam 51, which is movably attached to a rectangular base 31. Vertical mounting columns 52 are longitudinally arranged on both sides of the bottom beam 51, and are movably attached to side columns 413. A top beam 53 is installed on the top side wall of the top column 52, parallel to the bottom beam 51. A U-shaped support 54 is provided on the inner side of the top beam 53. Two door columns 55 are arranged between the bottom beam 51 and the top beam 53. A double door 56 is arranged between the two door columns 55. Mounting sealing plates 57 are provided on the upper and lower sides of the double door 56, and between the door columns 55 and the mounting columns 52. Cable clamp brackets 58 are movably attached to the two door columns 55.

[0073] It should be noted that the mounting frame 5, serving as the inlet and outlet side panel for both the high-voltage and low-voltage sides, adopts a modular splicing structure similar to the side sealing frame 4. The mounting surface bottom crossbeam 51, mounting surface columns 52, mounting surface top beam 53, and mounting surface sealing plate 57 are interconnected by bolts and nuts. The mounting surface bottom crossbeam 51 and the rectangular base 31 are interconnected by bolts and nuts. The mounting surface columns 52 are attached to the side columns 413 and connected by bolts and nuts through corresponding through holes, making the mounting frame 5 and the side sealing frame 4 a single unit. The mounting surface top beam 53 is horizontally positioned at the top of the mounting surface columns 52 on both sides. The U-shaped bracket 54 is used to support and fix the top sealing plate 6. The two door columns 55 are vertically installed on the mounting surface bottom crossbeam 51. Between the mounting frame 5 and the top beam 53 of the mounting surface, the mounting frame 5 is separated into a central doorway area. The double doors 56 are hinged to the two door pillars 55, which facilitates the maintenance of the interior of the casing by the staff. The areas between the upper and lower sides of the double doors 56 and the door pillars 55 and the mounting surface pillars 52 are filled and sealed by the mounting surface sealing plate 57. The cable clamp brackets 58 are fixed to the door pillars 55 by bolts to support and fix the incoming and outgoing cables. The mounting frame 5 is an independent module that can be quickly assembled with the bottom of the box, the side sealing frame 4 and the top sealing plate 6 on site. The installation position of the cable clamp brackets 58 can be flexibly selected according to the actual position of the high and low voltage terminals of the transformer body 1 to adapt to different engineering wiring requirements.

[0074] Among them, the mounting faceplate 57 can use the same adjustable structure as the overlapping panel assembly 42. The specific structure has been described in the overlapping panel assembly 42 and will not be described here.

[0075] Specifically, the top sealing plate 6 includes a top crossbeam 61 that is attached to the upper wall of the inner extension edge 415. A retaining strip 62 is provided on the lower wall of the top crossbeam 61. The retaining strip 62 is movably attached to the U-shaped bracket 54. A limiting edge 63 is provided on the inner side of the top crossbeam 61. Multiple top cover plates 64 are movably attached to both sides of the upper wall of the limiting edge 63. An upper outlet epoxy board 65 is provided on one of the multiple top cover plates 64.

[0076] It should be noted that the top sealing plate 6 also adopts a detachable assembly structure. The top crossbeam 61 overlaps the side top beams 414 of the side sealing frames 4 on both sides. The clip 62 is inserted into the U-shaped bracket 54, and the clip 62 and the U-shaped bracket 54 are locked together by bolts. The positioning of the top sealing plate 6 is achieved by matching the clip 62 and the U-shaped bracket 54. The limiting edge 63 provides support for the top cover 64. Multiple top covers 64 are sequentially and movably attached to the upper wall of the limiting edge 63. They can be connected to each other by overlapping edges and bolts. The top cover 64 can also use the same adjustable structure as the overlapping assembly 42 to adapt to different sizes of shells. One of the top covers 64 has a reserved opening and is equipped with an upper outlet epoxy plate 65 for insulation and support when the transformer top outlet is outgoing.

[0077] As a preferred option, the first end outer plate 421, the second end outer plate 422, and the first end inner plate 423 are all provided with heat dissipation holes 429 for heat dissipation of the transformer. The bottom sealing frame 3, the side sealing frame 4, the mounting frame 5, and the top sealing plate 6 can also be provided with heat dissipation holes 429.

[0078] As a preferred and further option, the top cover 64 is provided with a hoisting hole 66 for hoisting and installing the top cover 64.

[0079] The above technical solutions only embody the preferred technical solutions of the present invention. Any modifications that may be made by those skilled in the art to certain parts thereof embody the principles of the present invention and fall within the protection scope of the present invention.

Claims

1. A dry-type transformer with a modularly assembled outer casing, comprising a transformer body (1), characterized in that, The transformer body (1) is provided with a displacement support (2) at the bottom. The displacement support (2) and the bottom sealing frame (3) form the bottom of the box. Side sealing frames (4) are symmetrically arranged on both sides of the bottom of the box. An installation frame (5) is installed on the bottom of the box and matches the side sealing frame (4). A top sealing plate (6) is installed on the top of the installation frame (5) and the side sealing frame (4). The side sealing frame (4) includes a side frame (41), and a side middle beam (411) is provided on the inner wall of the side frame (41). Overlapping splicing plate group (42) is filled between the side frame (41) and the side middle beam (411). The overlapping panel assembly (42) includes a first end outer plate (421) and a second end outer plate (422). A first end inner plate (423) is provided on one side of the first end outer plate (421) and between it and the second end outer plate (422). The first end outer plate (421) and the first end inner plate (423) are connected by a vertical plate (424). A support member (425) is provided on the first end inner plate (423). The inner wall of the second end outer plate (422) is movably attached to the support member (425). The overlapping panel assembly (42) has a first state and a second state. The first state is that the second end outer plate (422) fully covers the first end inner plate (423), that is, the second end outer plate (422) and the first end outer plate (421) are in contact with each other; The second state is that the second end outer plate (422) partially covers the first end inner plate (423), that is, there is a gap section (43) between the second end outer plate (422) and the first end outer plate (421), and a connecting sealing plate (44) is provided in the gap section (43). The side frame (41) includes a bottom side beam (412), and side columns (413) are longitudinally arranged on both sides of the bottom side beam (412). The middle side beam (411) is installed on the side columns (413). A top side beam (414) is installed on the top of the side columns (413) parallel to the bottom side beam (412). An inner extension edge (415) is provided on the top side beam (414). The distance between the first end inner plate (423) and the second end outer plate (422) is smaller than the width of the bottom side beam (412), the middle side beam (411), and the top side beam (414). The bottom frame (3) includes a rectangular base (31), the side bottom beam (412) is movably attached to the upper wall of the rectangular base (31), the inner wall of the rectangular base (31) is equipped with a center seat (32), the displacement support (2) includes a limiting drive structure (21) installed in the center seat (32), the limiting drive structure (21) is provided with two parallel first feet (22), each first foot (22) is connected to a second foot (24) through a length adjustment structure (23), the inner wall of the rectangular base (31) and located on both sides of the displacement support (2) are provided with a bottom edge plate (33), the inner wall of the rectangular base (31) and located between the two first feet (22) are provided with a bottom middle plate (34), and a U-shaped sealing plate (35) matching the displacement support (2) is filled between the bottom edge plate (33) and the bottom middle plate (34).

2. A dry-type transformer with a modularly assembled housing according to claim 1, characterized in that, A first connecting edge (426) is provided on one side of the first end outer plate (421), the upper and lower ends of the upright plate (424) and the first end inner plate (423). The first connecting edge (426) is movably attached to the side bottom crossbeam (412), the side middle crossbeam (411) and the side top beam (414). A second connecting edge (427) is provided on the second end outer plate (422) except for the part near the first end outer plate (421). A overlapping edge (428) is provided on the inner wall surface of the second end outer plate (422). The overlapping edge (428) is movably attached to the first connecting edge (426). The second connecting edge (427) is movably attached to the side bottom crossbeam (412), the side middle crossbeam (411) and the side top beam (414).

3. A dry-type transformer with a modularly assembled housing according to claim 1, characterized in that, The limiting drive structure (21) includes two internal threaded sleeves (211), which are fixedly installed on the opposite wall surfaces of the first foot (22). A pull screw (212) is movably inserted into the two internal threaded sleeves (211) through the thread. A bracket (213) is movably inserted into the center seat (32). One end of the bracket (213) is fitted into the center of the pull screw (212) through a bearing. Guide rods (214) pass through the two first foot seats (22) and the two second foot seats (24).

4. A dry-type transformer with a modularly assembled housing according to claim 3, characterized in that, The length adjustment structure (23) includes a hollow rectangular sleeve (231) fixedly installed on the inner top surface of the first foot (22). The upper wall of the hollow rectangular sleeve (231) is provided with an avoidance notch (232). A movable strip (233) is movably inserted into the hollow rectangular sleeve (231). One end of the movable strip (233) is fixedly installed on the inner top surface of the second foot (24). An elongated hole (234) is provided on the movable strip (233). An adjusting bolt (235) movably passes through the elongated hole (234) and the hollow rectangular sleeve (231). An adjusting nut (236) is movably fitted onto the adjusting bolt (235) through a thread.

5. A dry-type transformer with a modularly assembled housing according to claim 4, characterized in that, Each mounting frame (5) includes a bottom crossbeam (51) of the mounting surface, which is movably attached to a rectangular base (31). Vertical mounting columns (52) are longitudinally arranged on both sides of the bottom crossbeam (51), and are movably attached to side columns (413). A top mounting beam (53) is installed on the top side wall of the top mounting column (52) parallel to the bottom crossbeam (51). (53) has a U-shaped bracket (54) on its inner side. Two door pillars (55) are provided between the bottom crossbeam (51) of the mounting surface and the top beam (53) of the mounting surface. A double door (56) is provided between the two door pillars (55). Mounting surface sealing plates (57) are provided on the upper and lower sides of the double door (56) and between the door pillars (55) and the mounting surface pillars (52). Cable clamp brackets (58) are movably attached to the two door pillars (55).

6. A dry-type transformer with a modularly assembled housing according to claim 5, characterized in that, The top sealing plate (6) includes a top beam (61) attached to the upper wall of the inner extension edge (415). A retaining strip (62) is provided on the lower wall of the top beam (61). The retaining strip (62) is movably attached to the U-shaped bracket (54). A limiting edge (63) is provided on the inner side of the top beam (61). Multiple top covers (64) are movably attached to both sides of the upper wall of the limiting edge (63). An upper outlet epoxy board (65) is provided on one of the multiple top covers (64).

7. A dry-type transformer with a modularly assembled housing according to claim 1, characterized in that, Heat dissipation holes (429) are provided on the first end outer plate (421), the second end outer plate (422), and the first end inner plate (423).

8. A dry-type transformer with a modularly assembled housing according to claim 6, characterized in that, The top cover (64) is provided with a hoisting hole (66).

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