Transformer box and dry-type transformer

Abstract

The invention belongs to the technical field of dry type transformers, and particularly relates to a transformer box which comprises two supports, two main box plates and two side box plates are slidably arranged on the two supports in a limiting mode, and an opening and closing assembly used for driving the two main box plates and the two side box plates to be synchronously opened is installed at the top of the lower support. And the opening and closing assembly comprises a cross seat fixed at the top of the lower support. Through cooperation of the opening and closing assembly and the reciprocating mechanism, the two main box plates and the two side box plates can be driven to synchronously and stably move in four directions along the first guide rail and the second guide rail, then the box body can be opened from inside to outside in a blooming mode, and after the box body is opened, the dry-type transformer can be completely exposed in front of maintenance personnel, so that the maintenance personnel can conveniently maintain the dry-type transformer. Therefore, maintenance personnel can approach the equipment from any angle to carry out detection, maintenance or replacement operation, maintenance dead angles in a traditional box body are thoroughly eliminated, and the safety and efficiency of operation and maintenance work are greatly improved.

Description

Technical Field

[0001] This invention relates to the field of dry-type transformer technology, specifically to a transformer box and a dry-type transformer. Background Technology

[0002] Dry-type transformers are widely used in buildings, industrial plants and other places due to their advantages such as being oil-free, fireproof and easy to maintain. As an indispensable supporting system for dry-type transformers, the dry-type transformer box is not just "packaging", but a key guarantee facility to ensure that the transformer can operate safely, reliably and efficiently throughout its entire life cycle.

[0003] After the dry-type transformer is installed inside the transformer box, the narrow space inside the box makes subsequent maintenance of the dry-type transformer inconvenient. In addition, although some transformer boxes adopt the design of moving the dry-type transformer to the outside of the box to achieve comprehensive maintenance, this kind of removal maintenance method requires additional disassembly and assembly of the conductor bar, which increases the operation process and complexity. Therefore, we propose a transformer box and dry-type transformer to solve the above problems. Summary of the Invention

[0004] (a) Technical problems to be solved

[0005] To address the shortcomings of existing technologies, this invention provides a transformer box and a dry-type transformer, solving the problems mentioned in the background section.

[0006] (II) Technical Solution

[0007] To achieve the above objectives, the present invention specifically adopts the following technical solution:

[0008] A transformer box includes two supports, with two main box plates and two side box plates that slide at the upper limit of the two supports. An opening and closing assembly for driving the two main box plates and the two side box plates to open synchronously is installed on the top of the lower support.

[0009] The opening and closing assembly includes a cross-shaped base fixed to the top of the lower support. Inside the cross-shaped base, two lower transverse racks, two lower longitudinal racks, two upper transverse racks, and two upper longitudinal racks are slidably connected. Movable plates are fixed to one side wall of each of the two lower transverse racks and two lower longitudinal racks. Two of these movable plates are fixedly connected to their respective main housing plates, and the other two are fixedly connected to their respective side housing plates. Inside the cross-shaped base, four rotating shafts (first and second) are rotatably connected via bearings. Each rotating shaft (first) has a large-pitch-increasing gear fixed to its surface, and each rotating shaft (second) has a small-pitch-increasing gear fixed to its surface. The large-pitch-increasing gears mesh with their respective small-pitch-increasing gears. The two lower transverse racks and two lower longitudinal racks mesh with their respective small-pitch-increasing gears, and the two upper transverse racks and two upper longitudinal racks mesh with their respective large-pitch-increasing gears. A reciprocating mechanism is installed on the cross-shaped base to drive the two upper transverse racks and two upper longitudinal racks to move synchronously in opposite directions.

[0010] Furthermore, the reciprocating mechanism includes a circular seat fixed to the top of the cross seat. The top of the circular seat is rotatably connected to a drive shaft and four driven shafts via bearings. A drive gear is fixed to the surface of the drive shaft, and a driven gear is fixed to the surface of each driven shaft. The driven gears are meshed with the drive gears. A rotating plate is fixed to the top of each driven shaft. A push-pull block is eccentrically and movably connected to the top of each rotating plate. The bottom of two push-pull blocks is fixedly connected to the corresponding upper transverse rack, and the bottom of the other two push-pull blocks is fixedly connected to the corresponding upper longitudinal rack. Four positioning blocks that are adapted to the push-pull blocks are fixed to the surface of the cross seat, and the push-pull blocks slide on the corresponding positioning blocks.

[0011] Furthermore, a locking assembly is also installed on the cross seat to prevent the drive shaft from loosening due to rotation;

[0012] The locking assembly includes four support seats fixed to the surface of the cross seat. Each support seat has a sliding block, and a sector-shaped toothed plate is fixed between two corresponding sliding blocks. A circular toothed plate is fixed to the surface of the drive shaft, and the two sector-shaped toothed plates are meshed with the circular toothed plate. A spring is fixed inside each support seat, and the other end of the spring is fixedly connected to the corresponding sliding block. A T-shaped plate is fixed to the top of each sector-shaped toothed plate, and a pressing plate adapted to the T-shaped plate is fixed to the surface of the drive shaft.

[0013] Furthermore, each of the support bases is equipped with a deceleration mechanism to slow down the spring's return speed;

[0014] The deceleration mechanism includes two connecting shafts rotatably connected between the inner walls of the two sides of the support base via bearings. A small deceleration gear is fixed on the surface of the upper connecting shaft, and a large deceleration gear is fixed on the surface of the lower connecting shaft. The small deceleration gear and the large deceleration gear are meshed together. A deceleration rack is fixed at the bottom of the moving block, and the deceleration rack is meshed with the small deceleration gear.

[0015] Furthermore, a rubber rack is fixed inside the support base below the reduction rack, and the rubber rack meshes with the reduction gear.

[0016] Furthermore, each of the two side panels has a heat dissipation vent on one side wall, and a protective component is installed at each heat dissipation vent.

[0017] The protective component includes an annular frame fixed at the heat dissipation vent, and a dustproof mesh, a waterproof and breathable membrane layer, and a cotton cloth layer are sequentially fixed inside the annular frame.

[0018] Furthermore, each of the two main boxes has two hinged doors, and each door is equipped with a viewing window.

[0019] Furthermore, four guide rails 1 and two guide rails 2 are fixed on each of the two supports. Four guide plates 1 that are adapted to guide rails 1 are fixed on one side wall of the main box plate. Two guide plates 2 that are adapted to guide rails 2 are fixed on one side wall of the side box plate.

[0020] A dry-type transformer includes a transformer box and a mounting frame fixed between two supports, on which the dry-type transformer body is mounted.

[0021] (III) Beneficial Effects

[0022] Compared with the prior art, the present invention provides a transformer box and a dry-type transformer, which have the following beneficial effects:

[0023] This invention, through the cooperation of the opening and closing assembly and the reciprocating mechanism, enables the two main housing plates and two side housing plates to move smoothly and synchronously in four directions along guide rail one and guide rail two. This allows the housing to "bloom" open from the inside to the outside. After the housing is opened, the dry-type transformer is completely exposed to maintenance personnel, allowing them to approach the equipment from any angle for inspection, maintenance, or replacement work. This completely eliminates the blind spots in the traditional housing and significantly improves the safety and efficiency of operation and maintenance. In addition, by using the reciprocating mechanism to drive the opening and closing assembly to open and close the two main housing plates and two side housing plates, the small displacement of the rack (upper transverse rack / upper longitudinal rack) driven by the meshing combination of the small and large pitch gears in the opening and closing assembly is amplified by the gear pair and converted into a double-stroke movement of the driven rack (lower transverse rack / longitudinal rack) and the two main housing plates and two side housing plates, achieving a labor-saving effect of small input and large output.

[0024] This invention, through its locking assembly, utilizes a spring, a sector-shaped toothed plate, and a circular toothed plate to form a mechanical self-locking mechanism. This effectively prevents the two main housing plates and two side housing plates from opening or closing on their own under vibration or external force. The locking is released only when needed by pressing the T-shaped plate open with a squeezing plate, ensuring high safety. Furthermore, the reduction mechanism in the locking assembly utilizes the reduction ratio of the gear system and the damping characteristics of the rubber to significantly delay the spring's return speed. This results in a smooth, gentle, and impact-free engagement and disengagement process between the locking sector-shaped toothed plate and the circular toothed plate, protecting the gear tooth surfaces and extending the overall lifespan of the locking assembly. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0026] Figure 2 This is a schematic diagram of the support structure of the present invention;

[0027] Figure 3 This is a schematic diagram of the opening and closing component structure of the present invention;

[0028] Figure 4 This is a schematic diagram of the movable plate structure of the present invention;

[0029] Figure 5 This is a schematic diagram of the cross-shaped support structure of the present invention;

[0030] Figure 6 This is a schematic diagram of the transverse rack structure of the present invention;

[0031] Figure 7 This is a schematic diagram of the circular base structure of the present invention;

[0032] Figure 8 For the present invention Figure 4Enlarged schematic diagram of the structure at point A in the middle;

[0033] Figure 9 This is a schematic diagram of the push-pull block structure of the present invention;

[0034] Figure 10 This is a schematic diagram of the locking assembly structure of the present invention;

[0035] Figure 11 This is a schematic diagram of the fan-shaped toothed plate structure of the present invention;

[0036] Figure 12 This is a schematic diagram of the protective component structure of the present invention;

[0037] Figure 13 This is a schematic diagram of the drive shaft structure of the present invention.

[0038] In the diagram: 1. Support; 2. Main box plate; 3. Side box plate; 4. Opening and closing assembly; 41. Cross seat; 42. Lower transverse rack; 43. Lower longitudinal rack; 44. Upper transverse rack; 45. Upper longitudinal rack; 46. Moving plate; 47. Rotating shaft one; 48. Rotating shaft two; 49. Large increasing gear; 410. Small increasing gear; 411. Reciprocating mechanism; 4111. Circular seat; 4112. Drive shaft; 4113. Driven shaft; 4114. Drive gear; 4115. Driven gear; 4116. Rotating plate; 4117. Push-pull block; 4118. Positioning block; 5. Locking assembly; 51. Support base; 52. Moving block; 53. Sector-shaped toothed plate; 54. Circular toothed plate; 55. Spring; 56. T-shaped plate; 57. Extrusion plate; 58. Reduction mechanism; 581. Connecting shaft; 582. Reduction pinion; 583. Reduction gear; 584. Reduction rack; 585. Rubber rack; 6. Heat dissipation vent; 7. Protective components; 71. Annular frame; 72. Dustproof net; 73. Waterproof and breathable membrane layer; 74. Cotton cloth layer; 8. Box door; 9. Guide rail one; 10. Guide rail two; 11. Guide plate one; 12. Guide plate two; 13. Mounting bracket; 14. Dry-type transformer body. Detailed Implementation

[0039] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0040] Example

[0041] like Figure 1 , Figure 2 , Figure 3 , Figure 5 , Figure 6 ,Figure 7 , Figure 8 , Figure 9 and Figure 13 As shown, an embodiment of the present invention provides a transformer box including two supports 1. The two supports 1 have two main box plates 2 and two side box plates 3 that slide at their upper limits. Sealing treatment is applied between adjacent main box plates 2 and side box plates 3, and between the main box plates 2, side box plates 3 and supports 1. This prevents dust and lint from entering the box through gaps when it is not opened, thus avoiding any impact on the internal transformer. Two boxes 8 are hinged to each of the two main box plates 2, and each box 8 has a viewing window. This allows for routine maintenance of only certain parts of the transformer. When handling terminals, sensors, etc., there is no need to drive the main enclosure 2 to open as a whole through the opening and closing component 4. At this time, it is only necessary to open the corresponding area door 8 to operate, which greatly improves the convenience of local maintenance. The set visual observation window is made of double-layer tempered glass or transparent acrylic sheet, which has good light transmission and mechanical strength. Maintenance personnel can directly view the operating status of the transformer through the observation window and complete daily inspections without opening the enclosure door 8, avoiding frequent opening of the enclosure and damaging the sealed environment inside the enclosure. The top of the lower support 1 is equipped with an opening and closing component 4 for driving the two main enclosures 2 and the two side enclosures 3 to open simultaneously.

[0042] The opening and closing assembly 4 includes a cross seat 41 fixed to the top of the lower support 1. The cross seat 41 has two lower transverse racks 42, two lower longitudinal racks 43, two upper transverse racks 44, and two upper longitudinal racks 45 slidably connected inside. Each of the two lower transverse racks 42 and the two lower longitudinal racks 43 has a movable plate 46 fixed to one side wall. Two of the movable plates 46 are fixedly connected to their respective main housing plates 2, and the other two are fixedly connected to their respective side housing plates 3. The cross seat 41 has four rotating shafts 47 and four rotating shafts 48 rotatably connected inside via bearings. The surfaces of shaft 7 are all fixed with large-pitch gears 49, and the surfaces of shaft 2 48 are all fixed with small-pitch gears 410. The large-pitch gears 49 mesh with the corresponding small-pitch gears 410. The two lower transverse racks 42 and the two lower longitudinal racks 43 mesh with the corresponding small-pitch gears 410. The two upper transverse racks 44 and the two upper longitudinal racks 45 mesh with the corresponding large-pitch gears 49. A reciprocating mechanism 411 is installed on the cross seat 41 to drive the two upper transverse racks 44 and the two upper longitudinal racks 45 to move synchronously in opposite directions. The reciprocating mechanism 411 includes a fixed... A circular seat 4111 is located at the top of the cross-shaped seat 41. A drive shaft 4112 and four driven shafts 4113 are rotatably connected to the top of the circular seat 4111 via bearings. A motor mounting bracket is fixed to the top of the lower support 1, and a motor is fixed on the motor mounting bracket. The output end of the motor is fixedly connected to the top of the drive shaft 4112, thus driving the drive shaft 4112 to rotate after the motor is started. Furthermore, the motor is a servo motor, and its rotation angle can be precisely controlled. A drive gear 4114 is fixed to the surface of the drive shaft 4112, and driven gears are fixed to the surfaces of the driven shafts 4113. Wheel 4115 and driven gear 4115 are both meshed with driving gear 4114. The top of driven shaft 4113 is fixed with rotating plate 4116. The top of rotating plate 4116 is eccentrically connected with push-pull block 4117. The bottom of two push-pull blocks 4117 is fixedly connected to the corresponding upper transverse rack 44, and the bottom of the other two push-pull blocks 4117 is fixedly connected to the corresponding upper longitudinal rack 45. The surface of cross seat 41 is fixed with four positioning blocks 4118 that are adapted to push-pull blocks 4117. Push-pull blocks 4117 slide on the corresponding positioning blocks 4118.

[0043] Working principle and usage of this invention: When subsequent maintenance is required on the transformer inside the housing, firstly, starting the motor drives the drive shaft 4112 to rotate. Then, the drive gear 4114 fixed on the surface of the drive shaft 4112 will rotate synchronously with it. Since all four driven gears 4115 mesh with the drive gear 4114, and the driven gears 4115 are respectively fixed on the surfaces of the four driven shafts 4113, the rotational force of the drive gear 4114 can be synchronously transmitted to the four driven shafts 4113, thereby causing the four driven shafts 4113 to rotate synchronously at the same speed and in the same direction. When the driven shaft 4113 rotates, the rotating plate 4116 fixed at its top will also rotate synchronously in a circular motion. Since the push-pull block 4117 is eccentrically connected to the top of the rotating plate 4116 via a pin, when the rotating plate 4116 rotates, the circular trajectory formed by the eccentric hinge point can be converted into a horizontal linear driving force through the push-pull block 4117. At the same time, the positioning block 4118 on the surface of the cross seat 41 has a sliding groove adapted to the push-pull block 4117, which can restrict the push-pull block 4117 to slide only in the horizontal direction. Since two of the push-pull blocks 4117 are fixed to two upper transverse racks 44 respectively, and the other two push-pull blocks 4117 are fixed to two upper longitudinal racks 45 respectively, it is possible to drive the two upper transverse racks 44 and the two upper longitudinal racks 45 to move synchronously in opposite directions.

[0044] Since the large-pitch-increasing gear 49 and the small-pitch-increasing gear 410 inside the cross seat 41 mesh one by one, and the upper transverse rack 44 and the upper longitudinal rack 45 mesh with the corresponding large-pitch-increasing gear 49 respectively, and the lower transverse rack 42 and the lower longitudinal rack 43 mesh with the corresponding small-pitch-increasing gear 410 respectively, when the two upper transverse racks 44 and the two upper longitudinal racks 45 move, by utilizing the gear transmission ratio characteristics, the travel of the two lower transverse racks 42 and the two lower longitudinal racks 43 can be greater than that of the two upper transverse racks 44 and the two upper longitudinal racks 45. Therefore, the travel amplification effect can be achieved to meet the requirements of a large range of opening and closing of the box panel.

[0045] Finally, since the side walls of the lower transverse rack 42 and the lower longitudinal rack 43 are both fixed with movable plates 46, two sets of movable plates 46 are fixed to the two main housing plates 2 one by one, and the other two sets of movable plates 46 are fixed to the two side housing plates 3 one by one; when the two lower transverse racks 42 move synchronously in opposite directions, the movable plates 46 drive the two main housing plates 2 to open or close synchronously in the transverse direction; and when the two lower longitudinal racks 43 move synchronously in opposite directions, the movable plates 46 can drive the two side housing plates 3 to open or close synchronously in the longitudinal direction. When the two main housing plates 2 and the two side housing plates 3 are opened, a maintenance space will be formed on the outside of the transformer. Finally, maintenance personnel can perform maintenance work on the transformer inside the housing at any angle, which greatly improves the convenience of transformer maintenance.

[0046] likeFigure 3 , Figure 10 and Figure 11 As shown, in some embodiments, a locking assembly 5 is also installed on the cross seat 41 to prevent the drive shaft 4112 from loosening due to rotation.

[0047] The locking assembly 5 includes four support seats 51 fixed to the surface of the cross seat 41. Each support seat 51 has a sliding block 52. A sector-shaped toothed plate 53 is fixed between corresponding pairs of sliding blocks 52. A circular toothed plate 54 is fixed to the surface of the drive shaft 4112. Both sector-shaped toothed plates 53 mesh with the circular toothed plate 54. Springs 55 are fixed inside each support seat 51, with the other end of each spring fixedly connected to a corresponding sliding block 52. A T-shaped plate 56 is fixed to the top of each sector-shaped toothed plate 53. A pressing plate 57 adapted to the T-shaped plate 56 is fixed to the surface of the drive shaft 4112. In use, when the two main housing plates 2 and the two side housing plates 3 are closed and the drive shaft 4112 is not driven, the locking assembly 5112 is engaged. The locking assembly 5 is in the locked state, and its core relies on the preload of the spring 55 to achieve engagement and limiting: the spring 55 inside the support base 51 is always in the normal state, and its elastic force continues to act on the moving block 52. Since the two sector toothed plates 53 are fixedly connected to the corresponding moving blocks 52, the two sector toothed plates 53 can always be engaged with the circular toothed plate 54. Since the circular toothed plate 54 is fixed on the surface of the drive shaft 4112, the complete engagement of the two sector toothed plates 53 with the circular toothed plate 54 can limit its rotation, thereby locking the drive shaft 4112 and preventing it from rotating due to vibration, external force and other factors, ensuring the stability of the two main box plates 2 and the two side box plates 3 after opening or closing.

[0048] After the drive shaft 4112 rotates to open or close the two main box plates 2 and the two side box plates 3, the extrusion plate 57 will rotate synchronously with the drive shaft 4112. Since the two ends of the extrusion plate 57 are designed with arc-shaped protrusions, it can extrude the T-shaped plates 56 on the top of the two fan-shaped toothed plates 53 during its rotation. Then, the two T-shaped plates 56 will move synchronously in opposite directions under the lateral thrust of the extrusion plate 57. When the T-shaped plates 56 move, they will drive the corresponding fan-shaped toothed plates 53 to move. After the fan-shaped toothed plates 53 move, they will drive the moving block 52 to move. When the moving block 52 moves, the spring 55 will be in a stretched state. As the moving block 52 moves, the fan-shaped toothed plates 53 will disengage from the circular toothed plates 54. At this time, the rotation restriction of the drive shaft 4112 is released, and it can then rotate freely to drive the two main box plates 2 and the two side box plates 3 to open or close.

[0049] When the two main housing plates 2 and the two side housing plates 3 are unfolded or closed in place, the drive shaft 4112 will stop rotating. At this time, the pressing plate 57 will no longer exert a pushing force on the two T-shaped plates 56. The spring 55, which is in a stretched state, will release its restoring force. Then, under the restoring force of the spring 55, the moving block 52 can be driven to move in the direction of the drive shaft 4112. When the moving block 52 moves, it will drive the fan-shaped toothed plate 53 to re-mesh with the circular toothed plate 54. At this time, the automatic locking of the drive shaft 4112 can be completed, ensuring that the drive shaft 4112 remains locked when not in operation.

[0050] Furthermore, as shown in the figure, the drive shaft 4112 is composed of an upper half and a lower half. The extrusion plate 57 is fixed to the upper half, while the circular toothed plate 54 is fixed to the lower half. The significance of this arrangement is that when the drive shaft 4112 is self-locking, the sector toothed plate 53 is in a meshing state with the circular toothed plate 54. When the drive shaft 4112 rotates, it will be unable to rotate because it simultaneously drives the extrusion plate 57 and the circular toothed plate 54. By setting the drive shaft 4112 in a split configuration, the motor will drive the drive shaft 4112. The upper part rotates first, which can drive the extrusion plate 57 to rotate and release the restriction on the circular toothed plate 54. Then, when the upper part of the drive shaft 4112 continues to rotate, it can drive the lower part to rotate, thereby driving the circular toothed plate 54 and driving the four driven shafts 4113 to rotate. In order to ensure that the drive shaft 4112 is not affected each time the motor is started, after the two main box plates 2 and the two side box plates 3 are opened or closed, the upper part of the drive shaft 4112 can be started first for fine adjustment before the next start.

[0051] like Figure 10 and Figure 11 As shown, in some embodiments, the support base 51 is provided with a deceleration mechanism 58 for delaying the return speed of the spring 55.

[0052] The reduction mechanism 58 includes two connecting shafts 581 rotatably connected between the inner walls of the two sides of the support base 51 via bearings. A small reduction gear 582 is fixed to the surface of the upper connecting shaft 581, and a large reduction gear 583 is fixed to the surface of the lower connecting shaft 581. The small reduction gear 582 and the large reduction gear 583 are meshed together. A reduction rack 584 is fixed to the bottom of the moving block 52, and the reduction rack 584 is meshed with the small reduction gear 582. A rubber rack 585 is fixed inside the support base 51 below the reduction rack 584, and the rubber rack 585 is meshed with the large reduction gear 582. Gear 583 meshes with the gear, and the rubber rack 585 is made of highly elastic, high-friction coefficient nitrile rubber or silicone, with a certain elastic deformation capability on its tooth surface. In use, when the two main housing plates 2 and the two side housing plates 3 are unfolded, the moving block 52 moves, causing the reduction rack 584 to move. Because the tooth surface of the reduction rack 584 meshes with the reduction pinion 582 on the upper connecting shaft 581, when the reduction rack 584 moves linearly, the meshing of the tooth surfaces causes the reduction pinion 582 to rotate around the connecting shaft 581. Furthermore, the reduction pinion 582 also meshes with the reduction pinion 582 on the lower connecting shaft 581. The large reduction gear 583 meshes with the small reduction gear 582, which has fewer teeth than the large reduction gear 583. Based on the characteristic that the speed decreases and the torque amplifies when the small gear drives the large gear in a gear transmission, the speed of the large reduction gear 583 is much lower than that of the small reduction gear 582 when the small reduction gear 582 rotates. Since torque is inversely proportional to speed, the output torque of the large reduction gear 583 is amplified as the speed decreases, thus simultaneously amplifying the frictional resistance at the meshing point of the gear and rack. This delays the speed at which the spring 55 drives the moving block 52 to reset. Furthermore, it supports... The seat 51 is also equipped with a rubber rack 585, which meshes with the tooth surface of the reduction gear 583. When the reduction gear 583 rotates, its tooth tip and the tooth groove of the rubber rack 585 are squeezed against each other. After the rubber material undergoes elastic deformation, it generates a reverse elastic force. At the same time, the static friction and sliding friction between the tooth surfaces hinder the rotation of the gear. This "double action of elastic compression resistance plus frictional resistance" will continuously consume the kinetic energy of the gear set and rack, significantly reducing the linear motion speed of the reduction rack 584, thereby delaying the sliding speed of the moving block 52.

[0053] like Figure 12 As shown, in some embodiments, each of the two side panels 3 has a heat dissipation vent 6 on one side wall, and a protective component 7 is installed at each heat dissipation vent 6.

[0054] The protective component 7 includes an annular frame 71 fixed at the heat dissipation vent 6. Inside the annular frame 71, a dustproof net 72, a waterproof and breathable membrane layer 73, and a cotton cloth layer 74 are fixed in sequence. The heat dissipation vents 6 on the two side panels 3 can dissipate heat from the transformer, preventing it from being damaged by high temperature. The annular frame 71 is made of stainless steel or cold-rolled steel plate and is fixed to the heat dissipation vent 6 of the side panel 3 by bolts. Through the three-layer protective structure of the dustproof net 72, the waterproof and breathable membrane layer 73, and the cotton cloth layer 74, when the outside air flows through the heat dissipation vent 6, the dustproof net 72 first blocks large impurities such as dust, sand, and insects in the air, preventing them from entering the subsequent protective layer or directly intruding into the box. Since the stainless steel material has high strength and wear resistance, and the mesh structure is transparent, it will not significantly hinder the air flow, ensuring that the heat dissipation airflow can pass smoothly.

[0055] The waterproof and breathable membrane layer 73 is made of polytetrafluoroethylene microporous membrane or EPTFE composite membrane. The pore size of the membrane is much smaller than the diameter of water droplets, but larger than the diameter of water molecules and air molecules. Liquid water cannot penetrate through the micropores. At the same time, the membrane surface is hydrophobically treated, so liquid water will form water droplets on the membrane surface and roll off, preventing it from seeping into the box and causing the transformer to get damp.

[0056] The cotton cloth layer 74 is made of degreased cotton or highly absorbent fiber cloth. Before entering the box, the air after passing through the first two layers of filtration will flow through the cotton cloth layer 74. Due to the strong adsorption capacity of the cotton cloth fiber structure, it can further adsorb the fine dust, oil fume particles and other pollutants remaining in the air, preventing them from adhering to the surface of the transformer windings and insulation components, and preventing the insulation performance from deteriorating. At the same time, the cotton cloth layer 74 has good moisture absorption properties, which can adsorb the moisture in the air. Meanwhile, the cotton cloth itself is breathable and does not block heat, so it will not affect the discharge of hot air, achieving the effect of "moisture-proof without blocking heat dissipation".

[0057] like Figure 1 , Figure 3 , Figure 4 and Figure 12 As shown, in some embodiments, four guide rails 9 and two guide rails 10 are fixed on each of the two supports 1. Four guide plates 11 adapted to guide rails 9 are fixed on one side wall of the main box plate 2. Two guide plates 12 adapted to guide rails 10 are fixed on one side wall of the side box plate 3. Through the cooperation of guide rails 9 and guide plates 11, the two main box plates 2 can be anti-deviation and limited. Through the cooperation of guide rails 10 and guide plates 12, the two side box plates 3 can be anti-deviation and limited. This can enhance the stability of the two main box plates 2 and the two side box plates 3 during movement.

[0058] like Figure 2As shown, another embodiment of the present invention proposes a dry-type transformer, including a transformer box and a mounting frame 13 fixed between two supports 1. The dry-type transformer body 14 is mounted on the mounting frame 13. The mounting frame 13 is the core load-bearing structure of the dry-type transformer body 14. The mounting frame 13 is made of welded steel such as angle steel or channel steel and is fixed between the two supports 1 by bolts. The installation position avoids the transmission components of the opening and closing assembly 4 to ensure no interference. The dry-type transformer body 14 is fixed to the mounting frame 13 by bottom bolts. The structural strength of the mounting frame 13 is adapted to the weight of the body. At the same time, rubber shock-absorbing pads can be added between the mounting frame 13 and the body as needed to absorb the vibration generated during transformer operation and prevent the vibration from being transmitted to the supports 1 or the box, thus preventing problems such as loosening of the transmission mechanism and resonance noise of the box plate. The dry-type transformer body 14 is the core of power conversion. Its operation is based on the principle of electromagnetic induction. Since it is existing technology, the composition and working principle of the dry-type transformer body 14 will not be described in detail here.

[0059] Finally, it should be noted that the above descriptions are merely preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A transformer box, comprising two supports (1), characterized in that: The upper limit sliding of the two supports (1) has two main box plates (2) and two side box plates (3). The top of the lower support (1) is equipped with an opening and closing assembly (4) for driving the two main box plates (2) and the two side box plates (3) to open synchronously. The opening and closing assembly (4) includes a cross seat (41) fixed to the top of the lower support (1). The cross seat (41) has two lower transverse racks (42), two lower longitudinal racks (43), two upper transverse racks (44), and two upper longitudinal racks (45) slidably connected inside. Each of the two lower transverse racks (42) and the two lower longitudinal racks (43) has a movable plate (46) fixed to one side wall. Two of the movable plates (46) are fixedly connected to the corresponding main box plate (2), and the other two movable plates (46) are fixedly connected to the corresponding side box plate (3). The cross seat (41) has four rotating shafts (47) and four rotating shafts (48) rotatably connected inside via bearings. The surfaces of the first rotating shaft (47) are all fixed with a large pitch gear (49), and the surfaces of the second rotating shaft (48) are all fixed with a small pitch gear (410). The large pitch gear (49) meshes with the corresponding small pitch gear (410). The two lower transverse racks (42) and the two lower longitudinal racks (43) mesh with the corresponding small pitch gears (410). The two upper transverse racks (44) and the two upper longitudinal racks (45) mesh with the corresponding large pitch gears (49). The cross seat (41) is equipped with a reciprocating mechanism (411) for driving the two upper transverse racks (44) and the two upper longitudinal racks (45) to move synchronously in opposite directions.

2. A transformer box according to claim 1, characterized in that: The reciprocating mechanism (411) includes a circular seat (4111) fixed to the top of the cross seat (41). The top of the circular seat (4111) is rotatably connected to a drive shaft (4112) and four driven shafts (4113) via bearings. A drive gear (4114) is fixed to the surface of the drive shaft (4112), and a driven gear (4115) is fixed to the surface of each driven shaft (4113). Each driven gear (4115) meshes with the drive gear (4114). The top of each driven shaft (4113) is fixed. There is a rotating plate (4116), and the top of the rotating plate (4116) is eccentrically connected to a push-pull block (4117). The bottom of two push-pull blocks (4117) is fixedly connected to the corresponding upper transverse rack (44), and the bottom of the other two push-pull blocks (4117) is fixedly connected to the corresponding upper longitudinal rack (45). The surface of the cross seat (41) is fixed with four positioning blocks (4118) that are adapted to the push-pull blocks (4117). The push-pull blocks (4117) slide on the corresponding positioning blocks (4118).

3. A transformer box according to claim 2, characterized in that: The cross seat (41) is also equipped with a locking assembly (5) to prevent the drive shaft (4112) from rotating loosely. The locking assembly (5) includes four support seats (51) fixed on the surface of the cross seat (41). Each support seat (51) has a sliding block (52). A fan-shaped toothed plate (53) is fixed between two corresponding moving blocks (52). A circular toothed plate (54) is fixed on the surface of the drive shaft (4112). Both fan-shaped toothed plates (53) are meshed with the circular toothed plate (54). A spring (55) is fixed inside each support seat (51). The other end of the spring (55) is fixedly connected to the corresponding moving block (52). A T-shaped plate (56) is fixed on the top of each fan-shaped toothed plate (53). A pressing plate (57) adapted to the T-shaped plate (56) is fixed on the surface of the drive shaft (4112).

4. A transformer box according to claim 3, characterized in that: Each of the support bases (51) is equipped with a deceleration mechanism (58) for delaying the reset speed of the spring (55). The deceleration mechanism (58) includes two connecting shafts (581) rotatably connected between the inner walls of the two sides of the support base (51) via bearings. A small deceleration gear (582) is fixed on the surface of the upper connecting shaft (581), and a large deceleration gear (583) is fixed on the surface of the lower connecting shaft (581). The small deceleration gear (582) meshes with the large deceleration gear (583). A deceleration rack (584) is fixed at the bottom of the moving block (52), and the deceleration rack (584) meshes with the small deceleration gear (582).

5. A transformer box according to claim 4, characterized in that: Below the reduction rack (584) is a rubber rack (585) fixed inside the support base (51), and the rubber rack (585) meshes with the reduction gear (583).

6. A transformer box according to claim 1, characterized in that: Each of the two side panels (3) has a heat dissipation vent (6) on one side wall, and a protective component (7) is installed at each heat dissipation vent (6). The protective component (7) includes an annular frame (71) fixed at the heat dissipation port (6), and a dustproof net (72), a waterproof and breathable membrane layer (73), and a cotton cloth layer (74) are fixed inside the annular frame (71) in sequence.

7. A transformer box according to claim 1, characterized in that: Two doors (8) are hinged to each of the two main boxes (2), and each door (8) is provided with a viewing window.

8. A transformer box according to claim 1, characterized in that: Four guide rails (9) and two guide rails (10) are fixed on each of the two supports (1). Four guide plates (11) that are compatible with guide rails (9) are fixed on one side wall of the main box plate (2). Two guide plates (12) that are compatible with guide rails (10) are fixed on one side wall of the side box plate (3).

9. A dry-type transformer, comprising a transformer box as described in any one of claims 1-8, and further comprising a mounting frame (13) fixed between two supports (1), wherein a dry-type transformer body (14) is mounted on the mounting frame (13).

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