Anti-collision and pressure-resistant dry-type transformer shell

Abstract

The present application relates to the technical field of transformer shell, and particularly relates to an anti-collision and pressure-resistant dry-type transformer shell, which comprises a shell, two groups of outer protective cabinet doors are hingedly connected to one side of the shell, a bottom plate is fixedly connected to the bottom of the shell, an installation plate fixedly connected to the inner wall of the shell is arranged above the bottom plate, two groups of vertically arranged inner protective cabinet doors are arranged on the upper surface of the installation plate, and the upper and lower end surfaces of the inner protective cabinet doors are both provided with U-shaped tracks; a transmission structure composed of a hydraulic cylinder and a hydraulic telescopic rod is used to mechanically couple the outer protective cabinet doors and the inner protective cabinet doors and realize synchronous opening and closing; when the outer protective cabinet doors are closed, the hydraulic system drives the inner protective cabinet doors to tilt and close along the U-shaped tracks, so as to form double-layer sealing protection; when the outer protective cabinet doors are opened, the inner protective cabinet doors are synchronously tilted and moved inward, so as to avoid interference with internal transformer devices; the design can greatly enhance the overall anti-collision and pressure-resistant capacity of the shell while ensuring convenient operation, and effectively blocks external impact from being transmitted to the inside.

Description

Technical Field

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

[0002] As a key structure protecting the internal core components, the transformer casing not only needs to meet basic functions such as dust prevention, heat dissipation, and protection, but also needs to have sufficient mechanical strength to withstand unexpected loads such as external impacts and compression, so as to avoid damage to internal transformer coils, iron cores and other components due to damage to the casing, which could lead to power failures or even safety accidents. Currently, the outer protective cabinet doors of dry-type transformers on the market generally suffer from insufficient strength in their structural design. Most existing transformer outer protective cabinet doors adopt a single-layer sheet metal structure. Although some products have added simple reinforcing ribs inside the outer protective cabinet door, their overall impact and pressure resistance remains limited. In actual use scenarios, when the outer protective cabinet door is subjected to external collisions or pressure, the single-layer or simply reinforced outer protective cabinet door is prone to deformation, dents, or even breakage, failing to effectively prevent external forces from being transmitted to the cabinet interior. This may lead to displacement of internal transformer components, damage to the insulation layer, affecting the normal operation of the transformer, and in severe cases, causing safety hazards such as short circuits and leakage. Therefore, an impact-resistant and pressure-resistant dry-type transformer outer shell is proposed to improve the overall protective performance of the outer protective cabinet door, effectively preventing external forces from being transmitted to the cabinet interior and avoiding damage to the core components inside the cabinet, thus meeting the protection requirements and ease-of-use requirements in practical applications. Summary of the Invention

[0003] To address the problems in the prior art, this invention provides an anti-collision and pressure-resistant dry-type transformer housing, which improves the overall protective performance of the outer protective cabinet door, effectively blocks the transmission of external forces into the cabinet, and avoids damage to the core components inside the cabinet, thereby meeting the protection requirements and ease of use requirements in practical applications.

[0004] The technical solution adopted by this invention to solve its technical problem is an anti-collision and pressure-resistant dry-type transformer shell, including a shell, two sets of external protective cabinet doors hinged to one side of the shell, a base plate fixedly connected to the bottom of the shell, an mounting plate fixedly connected to the inner wall of the shell above the base plate, two sets of vertically arranged internal protective cabinet doors on the upper surface of the mounting plate, U-shaped tracks on the upper and lower ends of the internal protective cabinet doors, the U-shaped tracks including a transverse guide section and longitudinal guide sections respectively connected to both ends of the transverse guide section; longitudinal guide sliders that slide in cooperation with the longitudinal guide sections and transverse guide sliders that slide in cooperation with the transverse guide sections are fixedly connected to the upper and lower ends of the internal protective cabinet doors; the external protective cabinet doors and the internal protective cabinet doors are driven by a transmission structure, which is used to synchronously drive the internal protective cabinet doors to open and close when the external protective cabinet doors are opened and closed.

[0005] Specifically, the transmission structure includes a hydraulic cylinder horizontally mounted on the inner wall of the housing. The fixed end of the hydraulic cylinder is fixedly connected to the inner wall of the housing. The hydraulic cylinder and the longitudinal guide section of the U-shaped track are on the same axis. The output end of the hydraulic cylinder is hinged to one side of the inner protective cabinet door. The lower U-shaped track is fixedly connected to the upper surface of the mounting plate, and the upper U-shaped track is fixedly connected to the top of the inner side of the housing.

[0006] Specifically, the transmission structure also includes a hydraulic telescopic rod disposed between the mounting plate and the base plate. The fixed end of the hydraulic telescopic rod is hinged to the inner wall of the housing through a first hinge seat, and the output end of the hydraulic telescopic rod is hinged to the inner side of the outer protective cabinet door through a second hinge seat. The hydraulic telescopic rod is connected to the hydraulic cylinder through a pipeline.

[0007] Specifically, each inner protective cabinet door has several horizontally arranged liquid storage tanks inside. Several sealing grooves communicating with the liquid storage tanks are also provided inside the inner protective cabinet doors. A sealing plate is slidably connected within each sealing groove. Several sliding grooves communicating with the sealing grooves are provided on the outside of the inner protective cabinet doors. A movable block fixed to one side of the sealing plate is provided within each sliding groove. A first spring is fixed between the side of the sealing plate away from the movable block and the inner wall of the liquid storage tank. An elastic buffer pad is fixed to the side of the movable block away from the sealing plate. Several extrusion structures communicating with the liquid storage tanks are provided on opposite sides of both sets of inner protective cabinet doors.

[0008] Specifically, the extrusion structure includes a through groove that communicates with the liquid storage tank. An extrusion block is slidably connected in the through groove. A second spring is fixedly connected between one end of the extrusion block and the inner wall of the through groove. When the two sets of inner protective cabinet doors are closed relative to each other, the extrusion block abuts and extrudes with the end of the extrusion block of the other set of inner protective cabinet doors.

[0009] Specifically, several sets of limiting grooves are provided on the upper inner side of the inner protective cabinet door. A limiting plate is sealed and slidably connected in the limiting groove. A third spring is fixed between the limiting plate and the limiting groove. A slot communicating with the limiting groove is provided on the upper surface of the inner protective cabinet door. A locking block is slidably connected in the slot. The locking block is fixedly connected to the limiting plate. After the locking block moves up, it engages and is positioned with the inner side of the transverse guide section of the U-shaped track. Several sets of liquid storage tanks are interconnected by a series channel, one end of which is connected to the inside of the limiting tank.

[0010] Specifically, a number of vertically arranged support columns are fixedly connected between the mounting plate and the base plate; the upper surface of the mounting plate is provided with a number of mounting holes for mounting transformer devices.

[0011] Specifically, the outer side of the housing is provided with several sets of heat dissipation channels that communicate with the inside of the housing.

[0012] The beneficial effects of this invention are: The present invention discloses an anti-collision and pressure-resistant dry-type transformer housing. Through a transmission structure composed of a hydraulic cylinder and a hydraulic telescopic rod, the outer protective cabinet door and the inner protective cabinet door are mechanically coupled and opened and closed synchronously. When the outer protective cabinet door is closed, the hydraulic system drives the inner protective cabinet door to tilt and close along the U-shaped track, forming a double-layer sealing protection. When the outer protective cabinet door is opened, the inner protective cabinet door tilts and moves inward synchronously to avoid interference with the internal transformer components. This design, while ensuring convenient operation, greatly enhances the overall anti-collision and pressure-resistant capability of the housing and effectively prevents external impacts from being transmitted to the interior.

[0013] The present invention discloses an anti-collision and pressure-resistant dry-type transformer casing. When the inner protective cabinet door is closed, the mutually pressing compression blocks apply hydraulic pressure to the liquid storage tank, pushing multiple sets of elastic buffer pads to extend synchronously and tightly adhere to the inner side of the outer protective cabinet door. In the event of an external impact, the impact force is first absorbed by the elastic buffer pads, and the remaining force is evenly distributed to the entire stress-bearing surface of the inner protective cabinet door through the incompressible liquid, avoiding local stress concentration that could lead to deformation and significantly improving impact resistance and buffer stability. When the inner protective cabinet door is closed and the liquid storage tank is pressurized, hydraulic pressure pushes the limiting plate to move the locking block upwards, engaging with the inner side of the transverse guide section of the U-shaped track to achieve mechanical positioning. This structure automatically locks after closing, preventing door displacement due to impact and improving overall structural stability. When opening, hydraulic pressure is released, and the third spring drives the locking block to automatically reset, without affecting the smoothness of opening and closing, balancing protection reliability and ease of operation.

[0014] The present invention discloses an anti-collision and pressure-resistant dry-type transformer shell, in which multiple sets of independent elastic buffer pads extend synchronously through hydraulic drive, forming point-to-point contact with different areas inside the outer protective cabinet door, adapting to slight local deformation of the cabinet door, and avoiding uneven contact of the buffer structure; at the same time, it can buffer vibration, reduce hard collisions between cabinet doors, and prevent loosening of the connection; at the same time, the U-shaped track not only provides stable guidance for the movement of the inner protective cabinet door, but also enhances its support strength and deformation resistance, meeting the comprehensive needs of practical applications. Attached Figure Description

[0015] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0016] Figure 1 This is an isometric view of the present invention; Figure 2 This is a schematic diagram of the internal structure of the housing of the present invention; Figure 3 for Figure 2 Enlarged view of region A; Figure 4 This is a schematic diagram of the structure of the two sets of inner protective cabinet doors after they are closed according to the present invention; Figure 5 This is a schematic diagram of the inner protective cabinet door structure of the present invention; Figure 6This is a schematic diagram of the hydraulic cylinder connection structure of the present invention; Figure 7 for Figure 6 Enlarged view of region B; Figure 8 This is a schematic diagram of the U-shaped track structure of the present invention; Figure 9 This is a schematic cross-sectional view of the inner protective cabinet door portion of the present invention; Figure 10 for Figure 9 Enlarged view of region C; Figure 11 for Figure 9 Enlarged view of region D; In the diagram: 1. Shell; 2. Outer protective cabinet door; 3. Base plate; 4. Mounting plate; 5. Inner protective cabinet door; 6. Horizontal guide section; 7. Longitudinal guide section; 8. Longitudinal guide slider; 9. Horizontal guide slider; 10. Hydraulic cylinder; 11. Hydraulic telescopic rod; 12. First hinge seat; 13. Second hinge seat; 14. Liquid storage tank; 15. Sealing groove; 16. Sealing plate; 17. Slide groove; 18. Moving block; 19. First spring; 20. Elastic buffer pad; 21. Through groove; 22. Extrusion block; 23. Second spring; 24. Limiting groove; 25. Limiting plate; 26. Third spring; 27. Slot; 28. Locking block; 29. ​​Series channel; 30. Mounting hole; 31. Heat dissipation channel. Detailed Implementation

[0017] To make the technical means, creative features, objectives and effects of this invention easier to understand, the invention will be further described below in conjunction with specific embodiments.

[0018] To enhance the overall protective performance of the outer cabinet door, effectively prevent external forces from penetrating the cabinet interior, and avoid damage to core components inside the cabinet, thus meeting the protection requirements and ease-of-use requirements in practical applications, as one embodiment of the present invention, such as... Figure 1 , Figure 2 , Figure 3 , Figure 6 , Figure 7As shown, the anti-collision and pressure-resistant dry-type transformer shell of the present invention includes a shell 1. Two sets of outer protective cabinet doors 2 are hinged to one side of the shell 1. A base plate 3 is fixedly connected to the bottom of the shell 1. An mounting plate 4 is fixedly connected to the inner wall of the shell 1 above the base plate 3. Two sets of vertically arranged inner protective cabinet doors 5 are provided on the upper surface of the mounting plate 4. The upper and lower ends of the inner protective cabinet doors 5 are provided with U-shaped tracks. The U-shaped tracks include a transverse guide section 6 and a longitudinal guide section 7 respectively connected to both ends of the transverse guide section 6. The upper and lower ends of the inner protective cabinet doors 5 are fixedly connected with a longitudinal guide slider 8 that slides with the longitudinal guide section 7 and a transverse guide slider 9 that slides with the transverse guide section 6. The outer protective cabinet doors 2 and the inner protective cabinet doors 5 are connected by a transmission structure. The transmission structure is used to synchronously drive the inner protective cabinet doors 5 to open and close when the outer protective cabinet doors 2 are opened and closed.

[0019] In use, when it is necessary to open the outer protective cabinet door 2, pull the two sets of outer protective cabinet doors 2 outward. When the outer protective cabinet door 2 opens, it will drive the transmission structure to run. Under the action of the transmission structure, the two sets of vertically set inner protective cabinet doors 5 move synchronously toward the inside of the housing 1. During the movement, the longitudinal guide sliders 8 fixedly connected to the upper and lower end faces of the inner protective cabinet door 5 slide smoothly along the longitudinal guide section 7 of the U-shaped track. At the same time, the transverse guide sliders 9 on the upper and lower end faces of the inner protective cabinet door 5 slide horizontally along the transverse guide section 6 of the U-shaped track, and finally realize the tilted backward movement of the inner protective cabinet door 5. There is no need to control the opening and closing of the two sets of inner protective cabinet doors 5 separately, which improves the convenience of operation. Moreover, the tilted movement trajectory can effectively avoid the transformer devices on the mounting plate 4, avoid interference between the inner protective cabinet door 5 and the internal components when it is opened, and ensure the safety of device installation and use. When the outer protective cabinet door 2 needs to be closed, push the two sets of outer protective cabinet doors 2 inward. Through the transmission structure, drive the two sets of inner protective cabinet doors 5 in the opposite direction. The longitudinal guide slider 8 slides in the opposite direction along the longitudinal guide section 7 of the U-shaped track, and the transverse guide slider 9 slides horizontally in the opposite direction along the transverse guide section 6 of the U-shaped track. This causes the two sets of inner protective cabinet doors 5 to approach each other in an inclined trajectory. Finally, the two sets of inner protective cabinet doors 5 close together. After the double doors are closed, a double-layer protective structure is formed, which enhances the impact and pressure resistance of the shell 1. The U-shaped track provides stable guidance for the movement of the inner protective cabinet doors 5, avoiding jamming or deviation during the sliding process and ensuring sealing. At the same time, the integrated structural design of the U-shaped track can further improve the overall support strength of the inner protective cabinet doors 5 and enhance the resistance to deformation. The transmission structure can ensure the consistency of the closing action of the outer protective cabinet door 2 and the inner protective cabinet door 5, improve the smoothness of the closing operation and the structural stability after closing.

[0020] To improve the impact and pressure resistance of housing 1, for example, such as Figure 1 , Figure 2 , Figure 3As shown, the present invention also includes a transmission structure comprising a hydraulic cylinder 10 horizontally disposed on the inner wall of the housing 1, the fixed end of the hydraulic cylinder 10 being fixedly connected to the inner wall of the housing 1, the hydraulic cylinder 10 being on the same axis as the longitudinal guide section 7 of the U-shaped track, and the output end of the hydraulic cylinder 10 being hinged to one side of the inner protective cabinet door 5. The lower U-shaped track is fixedly connected to the upper surface of the mounting plate 4, and the upper U-shaped track is fixedly connected to the top of the inner side of the housing 1.

[0021] When in use, when the outer protective cabinet door 2 is opened, the opening action of the outer protective cabinet door 2 drives the hydraulic cylinder 10 to shorten and pull the inner protective cabinet door 5 toward the inside of the housing 1. The longitudinal guide slider 8 slides along the longitudinal guide section 7 of the U-shaped track, and the transverse guide slider 9 slides along the transverse guide section 6 of the U-shaped track, so as to realize the tilting and backward movement of the inner protective cabinet door 5. There is no need to operate the inner protective cabinet door 5 separately, which improves the convenience of operation. When the outer protective cabinet door 2 is closed, pushing the two sets of outer protective cabinet doors 2 inward causes the hydraulic cylinder 10 to extend, thereby pushing the inner protective cabinet door 5. This causes the longitudinal guide slider 8 to slide in the opposite direction along the longitudinal guide section 7 of the U-shaped track, and the transverse guide slider 9 to slide in the opposite direction synchronously along the transverse guide section 6. Finally, the two sets of inner protective cabinet doors 5 approach each other with an inclined trajectory and close together, ensuring that the inner protective cabinet doors 5 fit tightly when closed, improving the sealing performance. The U-shaped track fixed at both ends not only strengthens the overall support strength of the inner protective cabinet door 5, but also enhances its resistance to deformation. Together with the outer protective cabinet door 2, it forms a double-layer protective structure, significantly improving the anti-collision and pressure resistance performance of the shell 1, effectively blocking the transmission of external forces into the cabinet, and ensuring the safety of the internal transformer components.

[0022] To facilitate the inclined approach and close of the inner protective cabinet door 5 along the U-shaped track, for example, as follows: Figure 2 , Figure 3 As shown, the present invention also includes a transmission structure that further includes a hydraulic telescopic rod 11 disposed between the mounting plate 4 and the base plate 3. The fixed end of the hydraulic telescopic rod 11 is hinged to the inner wall of the housing 1 through the first hinge seat 12, and the output end of the hydraulic telescopic rod 11 is hinged to the inner side of the outer protective cabinet door 2 through the second hinge seat 13. The hydraulic telescopic rod 11 is connected to the hydraulic cylinder 10 through a pipeline.

[0023] When in use, pulling the two sets of outer protective cabinet doors 2 outward will cause the hydraulic telescopic rod 11 to extend, drawing the liquid in the hydraulic cylinder 10 into the hydraulic telescopic rod 11 along the pipeline, thereby driving the hydraulic cylinder 10 to shorten synchronously. The hinge design of the first hinge seat 12 and the second hinge seat 13 can flexibly adapt to the rotation trajectory of the outer protective cabinet door 2 and the extension angle of the hydraulic telescopic rod 11, avoiding motion interference and ensuring smooth transmission. When the outer protective cabinet door 2 is closed, pushing the two sets of outer protective cabinet doors 2 inward causes the hydraulic telescopic rod 11 to shorten synchronously. This forces the liquid inside the hydraulic telescopic rod 11 to be squeezed into the hydraulic cylinder 10 along the pipeline, driving the hydraulic cylinder 10 to extend synchronously. This, in turn, pushes the inner protective cabinet door 5 to approach and close along the U-shaped track, ensuring that the two sets of inner protective cabinet doors 5 fit tightly when closed, thus improving the sealing performance. The hydraulic transmission enhances the synchronicity and load-bearing capacity of the outer protective cabinet door 2 and the inner protective cabinet door 5, and, together with the double-layer cabinet door structure, improves the impact and pressure resistance of the shell 1, blocking the transmission of external forces and protecting the internal components.

[0024] To ensure a tight fit between the inner protective cabinet door 5 and the outer protective cabinet door 2, for example, such as... Figure 9 , Figure 10 As shown, the present invention also includes several sets of horizontally arranged liquid storage tanks 14 built into the interior of each inner protective cabinet door 5. Several sets of sealing grooves 15 communicating with the liquid storage tanks 14 are opened inside the inner protective cabinet door 5. A sealing plate 16 is slidably connected to the sealing groove 15. Several sets of sliding grooves 17 communicating with the sealing grooves 15 are opened on the outside of the inner protective cabinet door 5. A moving block 18 fixedly connected to one side of the sealing plate 16 is provided in the sliding groove 17. A first spring 19 is fixedly connected between the side of the sealing plate 16 away from the moving block 18 and the inner wall of the liquid storage tank 14. An elastic buffer pad 20 is fixedly connected to the side of the moving block 18 away from the sealing plate 16. Several sets of extrusion structures communicating with the liquid storage tanks 14 are arranged on opposite sides of the two sets of inner protective cabinet doors 5.

[0025] When in use, when the two sets of inner protective cabinet doors 5 approach each other in an inclined trajectory under the drive of the hydraulic cylinder 10, the extrusion structures configured on opposite sides of the two sets of inner protective cabinet doors 5 synchronously abut against each other and apply pressure to the inside of the liquid storage tank 14, pushing the sealing plate 16 to slide away from the liquid storage tank 14, and driving the moving block 18 to extend outward along the slide groove 17, so that the elastic buffer pad 20 is pressed into contact with the inside of the outer protective cabinet door 2. Multiple sets of liquid storage tanks 14 ensure uniform pressure distribution, realize the synchronous action of the sealing plate 16 and the moving block 18, and ensure the tightness of the fit between the inner protective cabinet door 5 and the outer protective cabinet door 2. By independently extending several sets of single elastic buffer pads 20, point-to-point contact can be formed for different areas inside the outer protective cabinet door 2, avoiding the problem of uneven fit of the overall buffer structure due to slight local deformation of the outer protective cabinet door 2; at the same time, the liquid storage tank 14 hydraulically ensures that the extension length of the elastic buffer pads 20 is consistent, avoiding the situation where some buffer pads are not in contact or are over-compressed, thus ensuring the stability of the buffering effect. When the outer protective cabinet door 2 is impacted or squeezed from the outside, the impact force is partially absorbed by the elastic buffer pad 20, and the remaining force is transmitted to the sealing plate 16 and the liquid in the storage tank 14 through the moving block 18. It is instantly diffused to all connected storage tanks 14, and the local concentrated impact force is evenly distributed to the entire force-bearing surface of the inner protective cabinet door 5, reducing the local peak force, avoiding deformation of the inner protective cabinet door 5, and protecting the internal components. In addition, when the transformer vibrates during operation, or when there is vibration interference in the external environment, the elastic buffer pad 20 can adapt to the vibration displacement through its own elastic deformation, reduce the hard collision between the inner protective cabinet door 5 and the outer protective cabinet door 2, and avoid the door connection from loosening due to long-term vibration.

[0026] To facilitate the extension of the movable block 18 and allow the elastic buffer pad 20 to fit against the outer protective cabinet door 2, for example, as shown... Figure 5 , Figure 9 As shown, the present invention also includes a compression structure comprising a through groove 21 communicating with the liquid storage tank 14, a compression block 22 being slidably connected in the through groove 21, and a second spring 23 being fixedly connected between one end of the compression block 22 and the inner wall of the through groove 21. When the two sets of inner protective cabinet doors 5 are closed relative to each other, the compression block 22 abuts against and compresses the end of the compression block 22 of the other set of inner protective cabinet doors 5.

[0027] When in use, as the two sets of inner protective cabinet doors 5 approach to close, the squeezing block 22 first comes into contact with the squeezing block, slides along the through groove 21 toward the liquid storage tank 14 and compresses the second spring 23. The second spring 23 buffers the impact force to prevent damage to the components. The squeezing block 22 continues to slide and apply uniform pressure to the liquid storage tank 14, ensuring that the subsequent sealing plate 16 and moving block 18 can extend synchronously, so that the elastic buffer pad 20 fits evenly with the outer protective cabinet door 2. After closing, the second spring 23 remains compressed, maintaining stable pressure in the liquid storage tank 14, ensuring that the elastic buffer pad 20 always fits with the outer protective cabinet door 2, and improving the buffering effect.

[0028] To further enhance the impact and pressure resistance of the casing, for example, such as Figure 9 , Figure 11 As shown, the present invention also includes a plurality of limiting grooves 24 provided on the upper inner side of the inner protective cabinet door 5, a limiting plate 25 being sealed and slidably connected in the limiting groove 24, a third spring 26 being fixedly connected between the limiting plate 25 and the limiting groove 24, a slot 27 communicating with the limiting groove 24 being provided on the upper surface of the inner protective cabinet door 5, a slot 27 being slidably connected in the slot 27, a slot 28 being fixedly connected to the limiting plate 25, and the slot 28 being engaged and positioned with the inner side of the transverse guide section 6 of the U-shaped track after moving upward; Several sets of liquid storage tanks 14 are interconnected by a series channel 29, one end of which is connected to the inside of the limiting tank 24.

[0029] When in use, when the two sets of inner protective cabinet doors 5 are closed, the squeezing structure squeezes the liquid storage tank 14. The liquid pressure is transmitted to the limiting groove 24 through the series channel 29, which pushes the limiting plate 25 to compress the third spring 26 and slide, causing the locking block 28 to move upward along the locking groove 27. The locking block 28 engages and is positioned with the inner side of the transverse guide section 6 of the U-shaped track. The pressure of multiple sets of liquid storage tanks 14 is transmitted synchronously to ensure that the locking blocks 28 move synchronously and the locking force is consistent, which improves the structural stability of the inner protective cabinet door 5 after it is closed, prevents the inner protective cabinet door 5 from shifting during impact, and at the same time improves the support strength of the inner protective cabinet door 5 in the vertical direction, thereby improving the vertical compressive strength. The locking block 28 engages with the U-shaped track to form a stable mechanical positioning structure, fixing the inner protective cabinet door 5 in the closed position, resisting the horizontal and vertical displacement of the door body during impact, preventing the inner protective cabinet door 5 from sliding relative to the outer protective cabinet door 2, further improving the outer shell's impact and pressure resistance, and preventing the door body from misaligning and damaging the internal components. When the outer protective cabinet door 2 needs to be opened, the hydraulic telescopic rod 11 draws in and drives the hydraulic cylinder 10 to shorten, causing the inner protective cabinet door 5 to tilt backward. The pressure in the liquid storage tank 14 decreases. At this time, the compressed third spring 26 releases its elastic potential energy, pushing the limit plate 25 to slide in the opposite direction along the limit groove 24. Simultaneously, it drives the locking block 28 to reset downward along the locking groove 27, releasing the locking block 28 from the transverse guide section 6 of the U-shaped track. This does not affect the normal movement of the inner protective cabinet door 5. The automatic reset design of the third spring 26 does not require additional manual operation, ensuring smooth and continuous door opening and closing. This not only ensures the reliability of positioning but also takes into account the convenience of use, avoiding the impact of the positioning structure on daily operation efficiency.

[0030] For example, such as Figure 2 As shown, the present invention also includes a plurality of vertically arranged support columns fixedly connected between the mounting plate 4 and the base plate 3; the upper surface of the mounting plate 4 is provided with a plurality of mounting holes 30 for mounting transformer devices.

[0031] During use, the support column enhances the connection strength between the mounting plate 4 and the base plate 3, improves the overall structural stability, effectively bears the weight of the transformer components, and resists the risk of deformation under compression and impact; the mounting hole 30 provides installation positioning for the transformer components, simplifies disassembly and assembly operations, and ensures that the components are installed firmly.

[0032] For example, such as Figure 1 As shown, the present invention also includes a plurality of heat dissipation channels 31 on the outer side of the housing 1 that communicate with the interior of the housing 1.

[0033] During use, the heat dissipation channel 31 allows air circulation inside and outside the housing 1, quickly dissipating the heat generated by the transformer operation, avoiding high temperature affecting the normal operation of the device, and reducing the risk of failure.

[0034] In use, the core components of the transformer are fixed on the mounting plate 4 through a number of mounting holes 30 on the upper surface of the mounting plate 4. The support columns can enhance the connection strength between the two, improve the overall structural stability, effectively bear the weight of the components, and ensure the installation is firm. Pushing the two sets of outer protective cabinet doors 2 inward causes the hydraulic telescopic rod 11 to shorten, squeezing the internal liquid into the hydraulic cylinder 10 and driving the hydraulic cylinder 10 to extend. Under the push of the hydraulic cylinder 10, the inner protective cabinet door 5 slides along the longitudinal guide section 7 of the U-shaped track through the longitudinal guide slider 8 on the upper and lower end faces, and the transverse guide slider 9 slides along the transverse guide section 6, closing with each other in an inclined trajectory. In this step, the hydraulic transmission realizes the synchronous opening and closing of the outer protective cabinet door 2 and the inner protective cabinet door 5, without the need to operate the inner cabinet door separately, improving the convenience of operation. After the double-layer cabinet doors are closed, a double-layer protective structure is formed. With the integrated support of the U-shaped track, the impact and pressure resistance of the shell 1 is greatly enhanced. At the same time, the U-shaped track provides stable guidance for the movement of the inner protective cabinet door 5, avoiding jamming or deviation, and ensuring sealing and deformation resistance. When the two sets of inner protective cabinet doors 5 are closed, the squeezing blocks 22 on opposite sides abut against each other and slide along the through groove 21 toward the liquid storage tank 14 and compress the second spring 23. This not only buffers the impact force to avoid damage to the components, but also applies uniform pressure to the liquid storage tank 14. The pressure is transmitted to the limiting groove 24 through the series channel 29, which pushes the limiting plate 25 to compress the third spring 26, causing the locking block 28 to move upward and engage with the transverse guide section 6 of the U-shaped track. The pressure of multiple sets of liquid storage tanks 14 is transmitted synchronously to ensure that the locking force of the locking block 28 is consistent, preventing the inner protective cabinet door 5 from shifting during an impact, and at the same time improving the vertical pressure resistance. Meanwhile, the pressure inside the liquid storage tank 14 pushes the sealing plate 16 to slide, causing the moving block 18 and the elastic buffer pad 20 to extend and fit against the inner side of the outer protective cabinet door 2. Multiple sets of elastic buffer pads 20 can form point-to-point fit for different areas of the cabinet door, adapting to slight local deformation, avoiding uneven buffering, and the hydraulic drive ensures that the extension length is consistent, ensuring buffering stability. When there is an external impact, the elastic buffer pad 20 first absorbs part of the impact force, and the remaining force is instantly diffused to the overall force-bearing surface through the liquid in the liquid storage tank 14, reducing the local stress peak, preventing the inner protective cabinet door 5 from deforming, and protecting the internal components. In long-term use, the elastic buffer pad 20 can also buffer vibration, reduce hard collisions between cabinet doors, and prevent loosening of the connection. When the transformer is working, the heat generated is dissipated through the heat dissipation channel 31 on the outside of the casing 1 and the outside air, so as to avoid high temperature affecting the normal operation of the device and reduce the risk of failure. When the protective cabinet door needs to be opened, pull the two sets of outer protective cabinet doors 2 outwards, causing the hydraulic telescopic rod 11 to extend, drawing liquid from the hydraulic cylinder 10 and causing the hydraulic cylinder 10 to shorten, pulling the inner protective cabinet door 5 to move inwards at an angle; after the pressure in the liquid storage tank 14 decreases, the third spring 26 releases potential energy to push the limit plate 25 to reset, the locking block 28 disengages from the U-shaped track, and the inner protective cabinet door 5 opens smoothly. In this step, the hydraulic transmission still ensures that the outer protective cabinet door 2 and the inner protective cabinet door 5 move synchronously, making the operation smooth and efficient; the tilting movement trajectory of the inner protective cabinet door 5 can effectively avoid internal components, avoid interference when opening, and ensure the safety of the components; the automatic reset of the locking block 28 does not require additional manual operation, taking into account both positioning reliability and ease of use, and does not affect daily operation efficiency.

[0035] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of protection claimed by the present invention. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. A shockproof and pressure-resistant dry-type transformer casing, characterized in that, The enclosure includes a housing (1), with two sets of outer protective cabinet doors (2) hinged to one side of the housing (1). A base plate (3) is fixedly connected to the bottom of the housing (1). An installation plate (4) is fixedly connected to the inner wall of the housing (1) above the base plate (3). Two sets of vertically arranged inner protective cabinet doors (5) are provided on the upper surface of the installation plate (4). The upper and lower ends of the inner protective cabinet doors (5) are provided with U-shaped tracks. The U-shaped tracks include a transverse guide section (6) and a longitudinal guide section (7) connected to both ends of the transverse guide section (6). The upper and lower ends of the inner protective cabinet doors (5) are fixedly connected with a longitudinal guide slider (8) that slides with the longitudinal guide section (7) and a transverse guide slider (9) that slides with the transverse guide section (6). The outer protective cabinet doors (2) and the inner protective cabinet doors (5) are connected by a transmission structure. The transmission structure is used to synchronously drive the inner protective cabinet doors (5) to open and close when the outer protective cabinet doors (2) are opened and closed.

2. The anti-collision and pressure-resistant dry-type transformer casing according to claim 1, characterized in that, The transmission structure includes a hydraulic cylinder (10) horizontally set on the inner wall of the housing (1). The fixed end of the hydraulic cylinder (10) is fixedly connected to the inner wall of the housing (1). The hydraulic cylinder (10) and the longitudinal guide section (7) of the U-shaped track are on the same axis. The output end of the hydraulic cylinder (10) is hinged to one side of the inner protective cabinet door (5). The lower U-shaped track is fixedly connected to the upper surface of the mounting plate (4), and the upper U-shaped track is fixedly connected to the top of the inner side of the housing (1).

3. The anti-collision and pressure-resistant dry-type transformer casing according to claim 2, characterized in that, The transmission structure also includes a hydraulic telescopic rod (11) set between the mounting plate (4) and the base plate (3). The fixed end of the hydraulic telescopic rod (11) is hinged to the inner wall of the housing (1) through the first hinge seat (12), and the output end of the hydraulic telescopic rod (11) is hinged to the inner side of the outer protective cabinet door (2) through the second hinge seat (13). The hydraulic telescopic rod (11) is connected to the hydraulic cylinder (10) through a pipeline.

4. The anti-collision and pressure-resistant dry-type transformer casing according to claim 3, characterized in that, The inner protective cabinet door (5) has several sets of horizontally arranged liquid storage tanks (14) inside. The inner protective cabinet door (5) has several sets of sealing grooves (15) that are connected to the liquid storage tanks (14). The sealing grooves (15) are sealed and slidably connected with sealing plates (16). The outer side of the inner protective cabinet door (5) has several sets of sliding grooves (17) that are connected to the sealing grooves (15). The sliding grooves (17) are provided with moving blocks (18) that are fixed to one side of the sealing plates (16). The side of the sealing plates (16) away from the moving blocks (18) is fixedly connected to the inner wall of the liquid storage tank (14) with a first spring (19). The side of the moving blocks (18) away from the sealing plates (16) is fixedly connected with an elastic buffer pad (20). The two sets of inner protective cabinet doors (5) are each equipped with several sets of extrusion structures that are connected to the liquid storage tanks (14) on opposite sides.

5. The anti-collision and pressure-resistant dry-type transformer casing according to claim 4, characterized in that, The extrusion structure includes a through groove (21) that communicates with the liquid storage tank (14). An extrusion block (22) is slidably connected inside the through groove (21). A second spring (23) is fixedly connected between one end of the extrusion block (22) and the inner wall of the through groove (21). When the two sets of inner protective cabinet doors (5) are closed relative to each other, the extrusion block (22) abuts against the end of the extrusion block (22) of the other set of inner protective cabinet doors (5).

6. The anti-collision and pressure-resistant dry-type transformer casing according to claim 5, characterized in that, The inner protective cabinet door (5) has several sets of limiting grooves (24) on the upper inner side. The limiting groove (24) is sealed and slidably connected to the limiting plate (25). The limiting plate (25) and the limiting groove (24) are fixedly connected to a third spring (26). The upper surface of the inner protective cabinet door (5) is provided with a card slot (27) that communicates with the limiting groove (24). The card slot (27) is slidably connected to the card block (28). The card block (28) is fixedly connected to the limiting plate (25). After the card block (28) moves up, it engages with the inner side of the transverse guide section (6) of the U-shaped track for positioning. Several sets of liquid storage tanks (14) are interconnected by a series channel (29), one end of which is connected to the inside of the limiting tank (24).

7. The anti-collision and pressure-resistant dry-type transformer casing according to claim 6, characterized in that, A number of vertically arranged support columns are fixedly connected between the mounting plate (4) and the base plate (3); the upper surface of the mounting plate (4) is provided with a number of mounting holes (30) for mounting transformer devices.

8. The anti-collision and pressure-resistant dry-type transformer casing according to claim 7, characterized in that, The outer side of the housing (1) is provided with several sets of heat dissipation channels (31) that communicate with the inside of the housing (1).

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