Low-noise shock-absorbing transformer

Abstract

The application belongs to the technical field of power transformers, and discloses a low-noise shock-absorbing transformer, which comprises a transformer body, the bottom of the transformer body is fixedly connected with an inner oil tank, and the outer side is provided with an outer shock-absorbing shell. The vibration generated by the transformer body is conducted to the inner oil tank, the vibration first acts on the honeycomb shock-absorbing piece between the inner oil tank and the outer shock-absorbing shell through the mounting plate, the honeycomb framework cooperates with the internal viscoelastic damping to generate compression, shear composite deformation, synchronously dissipate longitudinal conduction and multidirectional vibration energy, at the same time, the inner oil tank drives the baffle and the thrust block to displace synchronously with the vibration, the honeycomb framework deformation drives the secondary energy dissipation assembly to form a follow-up thrust, additional secondary energy dissipation effect is formed, the floating heat dissipation assembly blocks the transmission of vibration to the radiator through the elastic suspension structure, the secondary amplification of noise of the thin-walled structure is avoided, multidimensional wideband vibration reduction is realized, and the overall sound insulation and shock absorption effect and the long-term operation stability of the structure are significantly improved.

Description

Technical Field

[0001] This invention belongs to the field of power transformer technology, specifically a low-noise and vibration-damping transformer. Background Technology

[0002] With the increasing density of urban power grids and the upgrading of living environment requirements, oil-immersed transformers are being deployed in large numbers around residential areas and commercial buildings. Their operation vibration and noise problems have become the core pain point of power equipment environmental governance. During the operation of the transformer, the magnetostrictive deformation of the iron core, the alternating electromagnetic force of the winding, and the pulsating impact of the internal oil flow will jointly excite the vibration of the transformer body. The vibration is transmitted outward through the oil tank structure and cooling system and radiates noise. This will not only cause fasteners to loosen and insulation components to fatigue and wear, shortening the service life of the equipment, but also continuously affect the surrounding sound environment and cause noise pollution problems.

[0003] Existing vibration reduction and noise reduction schemes for transformers generally rely on single compression deformation, which can only attenuate longitudinally transmitted vibrations along the loading direction. The suppression effect on shear vibrations and lateral sway vibrations that are common in transformer operation is very limited, resulting in poor overall sound insulation and vibration reduction effects, which are difficult to meet the low-noise operation requirements of urban substations and distribution transformers around residential areas. Summary of the Invention

[0004] To address the above problems, the present invention provides the following technical solution: A low-noise, vibration-damping transformer includes a transformer body, an inner oil tank fixedly connected to the bottom of the transformer body, an outer vibration-damping shell sleeved on the outside, and a vibration-damping gap between the inner oil tank and the outer vibration-damping shell. Bases are fixedly installed on both sides of the bottom of the outer vibration-damping shell, and floating heat dissipation components are installed on the front and rear sides of the outer vibration-damping shell. The transformer also includes: Honeycomb vibration damping components are installed inside the outer vibration damping shell and are used to absorb and reduce the vibration generated by the operation of the transformer body. The honeycomb damper includes a honeycomb skeleton arranged around the top and bottom of the inner cavity of the outer damping shell. The honeycomb skeleton is filled with viscoelastic damping. Mounting plates are fixedly connected to the surface of the inner oil tank and the inner wall of the outer damping shell. The surface of the mounting plate is fixedly connected to the surface of the honeycomb skeleton. Fixing bolts are provided on the surface of the outer damping shell. The fixing bolts pass through the outer damping shell and are threaded to the mounting plate. Baffles are provided at the top and bottom of the honeycomb skeleton. The surface of the baffles is fixedly connected to the surface of the inner oil tank. Secondary energy dissipation components are installed on the surface of the baffles. Traction damping components are installed around the inside of the outer damping housing to provide auxiliary damping for the inner oil tank.

[0005] In the above technical solution, preferably, the floating heat dissipation assembly includes corrugated flanges fixedly installed on the front and rear sides of the outer shock-absorbing shell. The side of the corrugated flange closest to the inner oil tank passes through the outer shock-absorbing shell and communicates with the surface of the inner oil tank. Radiators are provided on both the front and rear sides of the outer shock-absorbing shell. The side of the corrugated flange furthest from the outer shock-absorbing shell communicates with the radiator. A mounting plate is fixedly installed on the surface of the radiator. Disc spring assemblies are fixedly installed on both sides of the top of the mounting plate. A connecting plate is fixedly installed on the top of the disc spring assemblies. The surface of the connecting plate is fixedly installed on the surface of the transformer body. An anti-detachment shock-absorbing assembly is installed on the surface of the radiator.

[0006] In the above technical solution, preferably, the anti-detachment and shock absorption assembly includes a bearing plate fixedly installed on the front and rear sides of the inner side of the base, a support plate fixedly installed on the surface of the radiator, a T-shaped block fixedly installed on the bottom of the support plate, a round sleeve hinged to the front and rear sides of the T-shaped block by a shaft pin, a viscous damper fixedly installed on the surface of the round sleeve, and the bottom of the viscous damper hinged to the top of the bearing plate by a connecting block, a ball joint, and a shaft pin.

[0007] In the above technical solution, preferably, the secondary energy dissipation component includes a damper fixedly installed on the surface of the baffle. The damper is a displacement damper with a built-in return spring. A vertical plate is fixedly installed at the output end of the damper. A push block is fixedly installed on the surface of the vertical plate. Under the elastic tension of the built-in return spring, the end face of the push block is always pressed against the surface of the honeycomb skeleton to accurately support the reciprocating displacement of the honeycomb skeleton during multi-directional deformation.

[0008] In the above technical solution, preferably, the traction damping component includes mounting corner brackets fixedly installed at the four corners of the inner oil tank, positioning grooves are fixedly installed at the four corners of the inner cavity of the outer damping shell, arc-shaped damping pads are fixedly connected to the surface of the mounting corner brackets, T-shaped slide bars are connected inside the positioning grooves, and the arc-shaped damping pads are fixedly installed on the surface of the T-shaped slide bars.

[0009] In the above technical solution, preferably, the inner wall of the outer shock-absorbing shell is covered with a sound-absorbing pad, which is located on the outer periphery of the inner oil tank to absorb the air noise radiated outward from the inner oil tank and block the path of sound energy transmission outward.

[0010] In the above technical solution, preferably, a reinforcing block is fixedly connected between the baffle and the outer wall of the inner oil tank. The reinforcing block is a gusseted structure and is fixedly connected to the side wall of the baffle and the outer wall of the inner oil tank respectively, which is used to enhance the installation rigidity of the baffle and prevent the baffle from deforming and shifting under force when the secondary energy consumption component is working.

[0011] In the above technical solution, preferably, the upper and lower ends of the front and rear sides of the outer shock-absorbing shell are fixedly connected with isolation guardrails, and the isolation guardrails surround the outer perimeter of the radiator to protect the floating heat dissipation components from external impacts.

[0012] In the above technical solution, preferably, a U-shaped damping pad is embedded at the top opening edge of the outer damping shell. The top surface of the U-shaped damping pad is in elastic contact with the mounting end face of the transformer body to buffer the vibration transmission between the transformer body and the outer damping shell, and to avoid the rigid contact between the two to form an additional solid vibration transmission path.

[0013] In the above technical solution, preferably, rain covers are fixedly installed on both sides of the outer wall of the outer shock absorber corresponding to the positions of the fixing bolts. The rain covers completely cover the exposed installation area of ​​the fixing bolts to prevent rainwater from entering the bolt connection parts, prevent the fixing bolts from rusting and loosening, and ensure the long-term installation stability of the honeycomb shock absorber.

[0014] Compared with the prior art, the beneficial effects of the present invention are as follows: This invention transmits the vibration generated by the transformer body to the inner oil tank. The vibration first acts on the honeycomb damping component between the inner oil tank and the outer damping shell through the mounting plate. The honeycomb skeleton, together with the internal viscoelastic damping, generates a composite deformation of compression and shear, which simultaneously dissipates the longitudinal transmission and multi-directional vibration energy. At the same time, the inner oil tank drives the baffle and the push block to move synchronously with the vibration. The deformation of the honeycomb skeleton drives the secondary energy dissipation component to form a follow-up push, adding a secondary energy dissipation effect. The floating heat dissipation component blocks the transmission of vibration to the radiator through the elastic suspension structure, avoiding secondary amplification of noise in the thin-walled structure, realizing multi-dimensional broadband vibration reduction, and significantly improving the overall sound insulation and vibration reduction effect and the long-term operational stability of the structure.

[0015] Furthermore, when the transformer vibrates during operation, the lateral swaying and torsional displacement of the inner tank are transmitted to the four corner mounting corners, causing the arc-shaped damping pads to undergo elastic bending deformation. This deformation dissipates multi-directional vibration energy. During the damping process, tightening the positioning bolts keeps the T-shaped slide bar and the positioning groove rigidly locked and relatively stationary, providing a stable support point for the arc-shaped damping pads. This ensures that the damping force is stable and controllable, effectively supplementing the lateral damping shortcomings of the honeycomb damping components. At the same time, it also takes into account the ease of assembly, improving the operational reliability and maintenance convenience of the overall vibration isolation system.

[0016] Furthermore, when the radiator vibrates due to the vibration transmitted from the oil tank, the support plate moves synchronously with the radiator in multiple directions, causing the T-block at the bottom to move synchronously. The circular sleeves on both sides of the T-block, which are hinged by shaft pins, deflect accordingly, synchronously pulling the viscous damper to produce extension and oscillation. The vibration energy is dissipated by the viscous damping effect. The support plate provides a stable support foundation for the entire assembly. While dissipating multi-directional vibration energy, it limits the maximum displacement of the radiator, avoids radiator detachment and failure under extreme conditions, and significantly improves the radiator's operational stability and multi-directional vibration reduction effect. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of the present invention; Figure 2 This is an assembly diagram of the internal vibration damping structure of the transformer of the present invention; Figure 3 This is a schematic diagram of the structure of the outer shock-absorbing shell of the present invention; Figure 4 This is a schematic diagram of the heat sink of the present invention; Figure 5 This is a schematic diagram of the anti-detachment and shock-absorbing component of the present invention; Figure 6 This is a schematic diagram of the structure of the traction damping component of the present invention; Figure 7 This is a schematic diagram of the structure of the secondary energy-consuming component of the present invention; Figure 8 This is a schematic diagram of the honeycomb skeleton structure of the present invention; Figure 9 For the present invention Figure 2 Enlarged structural diagram at point A in the middle.

[0018] In the diagram: 1. Transformer body; 2. Inner oil tank; 3. Outer shock-absorbing shell; 4. Base; 5. Floating heat dissipation assembly; 51. Corrugated flange; 52. Radiator; 53. Mounting plate; 54. Disc spring assembly; 55. Connecting plate; 56. Anti-detachment shock-absorbing assembly; 561. Bearing plate; 562. Support plate; 563. T-block; 564. Circular sleeve; 565. Viscous damper; 6. Honeycomb shock absorber; 61. Honeycomb frame. 62. Viscoelastic damping; 63. Mounting plate; 64. Fixing bolts; 65. Baffle; 66. Secondary energy dissipation components; 661. Damper; 662. Vertical plate; 663. Push block; 7. Traction damping component; 71. Mounting corner; 72. Positioning groove; 73. Arc-shaped damping pad; 74. T-shaped sliding strip; 8. Sound-absorbing pad; 9. Reinforcing block; 10. Isolation guardrail; 11. U-shaped damping pad; 12. Rain cover. Detailed Implementation

[0019] 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.

[0020] like Figures 1 to 7 As shown, the present invention provides a low-noise vibration-damping transformer, including a transformer body 1, an inner oil tank 2 fixedly connected to the bottom of the transformer body 1, an outer vibration-damping shell 3 sleeved on the outside, and a vibration-damping gap between the inner oil tank 2 and the outer vibration-damping shell 3. Bases 4 are fixedly installed on both sides of the bottom of the outer vibration-damping shell 3, and floating heat dissipation components 5 are installed on the front and rear sides of the outer vibration-damping shell 3. The transformer also includes: The honeycomb damping component 6 is installed inside the outer damping shell 3 and is used to absorb and reduce the vibration generated by the operation of the transformer body 1. The honeycomb damper 6 includes a honeycomb skeleton 61 arranged around the top and bottom of the inner cavity of the outer damping shell 3. The honeycomb skeleton 61 is filled with viscoelastic damping 62. The surface of the inner oil tank 2 and the inner wall of the outer damping shell 3 are both fixedly connected to the mounting plate 63. The surface of the mounting plate 63 is fixedly connected to the surface of the honeycomb skeleton 61. The surface of the outer damping shell 3 is provided with fixing bolts 64. The fixing bolts 64 pass through the outer damping shell 3 and are threaded to the mounting plate 63. The top and bottom of the honeycomb skeleton 61 are provided with baffles 65. The surface of the baffles 65 is fixedly connected to the surface of the inner oil tank 2. The surface of the baffles 65 is equipped with secondary energy dissipation components 66.

[0021] Specifically, the honeycomb frame 61 is a commercially available metal honeycomb core structure component. It serves as the supporting base for the honeycomb damper 6 and is fixed on the mounting plate 63. It provides a filling cavity for the viscoelastic damper 62 and can also disperse concentrated vibrations into distributed unit deformations, thus broadening the direction of vibration damping force. The viscoelastic damper 62 is a commercially available viscoelastic damper 62 filler material, which is injected into the unit cavity of the honeycomb frame 61. It is the core energy-dissipating component of the honeycomb damper 6 and can convert vibration mechanical energy into heat energy for dissipation with the multi-directional deformation of the honeycomb frame 61, covering multi-directional vibration attenuation.

[0022] like Figures 1 to 4As shown, the floating heat dissipation assembly 5 includes a corrugated flange 51 fixedly installed on the front and rear sides of the outer shock-absorbing shell 3. The side of the corrugated flange 51 closest to the inner oil tank 2 passes through the outer shock-absorbing shell 3 and connects to the surface of the inner oil tank 2. Radiators 52 are provided on both the front and rear sides of the outer shock-absorbing shell 3. The side of the corrugated flange 51 away from the outer shock-absorbing shell 3 connects to the radiator 52. A mounting plate 53 is fixedly installed on the surface of the radiator 52. Disc spring assemblies 54 are fixedly installed on both sides of the top of the mounting plate 53. A connecting plate 55 is fixedly installed on the top of the disc spring assembly 54. The surface of the connecting plate 55 is fixedly installed on the surface of the transformer body 1.

[0023] Specifically, the bellows flange 51 is a commercially available metal bellows compensator, connected in series between the oil circuit interface of the inner oil tank 2 and the radiator 52. While ensuring the oil circulation path is sealed and unobstructed, it can accommodate relative displacements in multiple dimensions, including axial, lateral, and angular directions. It cuts off the rigid vibration transmission link from the oil circuit connection path, preventing the vibration of the inner oil tank 2 from being directly transmitted to the radiator 52 through the interface. The disc spring assembly 54 is a standard disc spring stacked assembly, vertically installed between the mounting plate 53 and the connecting plate 55. It bears all the vertical static load of the radiator 52 and the internal oil, while also utilizing its low dynamic stiffness... The high degree of vibration isolation achieves efficient longitudinal vibration isolation, continuously attenuating the vibration energy transmitted from the transformer body 1 to the radiator 52; the mounting plate 53 is a conventional plate-type mounting connector, fixedly assembled on the upper structure of the radiator 52, providing a lower mounting reference for the disc spring assembly 54, which can evenly distribute the suspension load and prevent the oil collection pipe of the radiator 52 from deforming due to localized concentrated force; the connecting plate 55 is a common connecting and fixing plate, serving as the upper load-bearing base of the floating suspension system, providing a stable upper mounting support for the disc spring assembly 54, and ensuring the load-bearing stability and uniform force distribution of the entire suspension structure.

[0024] like Figures 1 to 5 As shown, the surface of the radiator 52 is equipped with an anti-detachment and shock-absorbing component 56. The anti-detachment and shock-absorbing component 56 includes a support plate 561 fixedly installed on the front and rear sides of the inner side of the base 4. A support plate 562 is fixedly installed on the surface of the radiator 52. A T-block 563 is fixedly installed on the bottom of the support plate 562. A round sleeve 564 is hinged to the front and rear sides of the T-block 563 through a shaft pin. A viscous damper 565 is fixedly installed on the surface of the round sleeve 564. The bottom of the viscous damper 565 is hinged to the top of the support plate 561 through a connecting block, a ball joint seat and a shaft pin.

[0025] Specifically, the viscous damper 565 is a commercially available small hydraulic viscous damping device, which is the core energy-consuming component of the anti-detachment and vibration damping assembly 56. It is adapted to multi-directional swing conditions through a hinged installation method at both ends. It continuously dissipates vibration energy by relying on the viscous resistance generated by the internal damping oil flowing through the throttling orifice, and has the dual functions of displacement limiting and energy dissipation and vibration reduction. The T-block 563 is a commercially available standard T-type connecting support, which is fixed to the bottom of the support plate 562 as a force transmission hub. It can provide symmetrical hinge points for the viscous dampers 565 on both sides at the same time, ensuring that the damping force on both sides is uniform and avoiding the radiator 52 from being skewed due to uneven load. The bearing plate 561 is a commercially available steel support component, which is fixed to the inside of the base 4 as the bearing foundation of the entire assembly. It can disperse the damping reaction force and avoid local stress concentration in the base 4.

[0026] like Figures 7 to 9 As shown, the secondary energy dissipation component 66 includes a damper 661 fixedly installed on the surface of the baffle 65. The damper 661 is a displacement damper with a built-in return spring. A vertical plate 662 is fixedly installed at the output end of the damper 661. A push block 663 is fixedly installed on the surface of the vertical plate 662. Under the elastic tension of the built-in return spring, the end face of the push block 663 is always pressed against the surface of the honeycomb skeleton 61 to accurately support the reciprocating displacement of the honeycomb skeleton 61 during multi-directional deformation.

[0027] Specifically, damper 661 is a commercially available passive displacement damping device, fixedly installed on the surface of baffle 65. It is the core energy-dissipating element of secondary energy-dissipating component 66. When its output end is driven by vertical plate 662 to move back and forth, it can convert vibration energy into heat energy and dissipate it through internal damping mechanism. It adds a secondary energy-dissipating effect on the main damping of honeycomb damper 6, focusing on enhancing the attenuation capability of lateral and shear-type non-longitudinal vibrations. Vertical plate 662 is a commercially available plate-type force transmission component, vertically connected to the output end of damper 661 and the pusher. Between blocks 663, displacement transmission and load distribution are achieved, ensuring that the vibration load transmitted by the push block 663 is evenly applied to the output end of the damper 661, thus ensuring a smooth and stable transmission process. The push block 663 is a standard end-face force transmission block, fixedly assembled on the side of the vertical plate 662 facing the honeycomb skeleton 61. The end face is tightly fitted with the surface of the honeycomb skeleton 61, which can accurately bear the multi-directional deformation displacement of the honeycomb skeleton 61, ensuring the sensitivity of the linkage response and the transmission stability, and ensuring that the vibration energy can be effectively transmitted to the damper 661 for dissipation.

[0028] like Figures 6 to 9As shown, the traction damping component 7 is disposed around the inside of the outer damping shell 3 and is used to provide auxiliary damping for the inner oil tank 2. The traction damping component 7 includes mounting corner brackets 71 fixedly installed at the four corners of the inner oil tank 2. Positioning grooves 72 are fixedly installed at the four corners of the inner cavity of the outer damping shell 3. Arc-shaped damping pads 73 are fixedly connected to the surface of the mounting corner brackets 71. T-shaped slide bars 74 are slidably connected inside the positioning grooves 72. A positioning set bolt (not shown in the figure) is threaded through one side wall of the positioning groove 72. The inner end of the positioning set bolt is selectively pressed against the side of the T-shaped slide bar 74. The arc-shaped damping pads 73 are fixedly installed on the surface of the T-shaped slide bar 74.

[0029] Specifically, the mounting corner 71 is a commercially available corner-type connecting component, fixedly covering the four corners of the inner oil tank 2. It serves both as the mounting base for the arc-shaped damping pad 73 to transmit vibration loads and as a means to strengthen the structural strength of the corners of the inner oil tank 2, dispersing vibration stress and preventing local fatigue damage. The positioning groove 72 is a commercially available standard groove-shaped guide rail component, fixedly installed at the four corners of the inner cavity of the outer damping shell 3, with the groove opening facing the inner oil tank 2. It provides sliding guidance and lateral rigid support for the T-shaped slider 74. Under vibration damping conditions, the groove wall restricts the sliding tendency of the T-shaped slider 74, keeping it relatively stationary to provide stable support. The arc-shaped damping pad 73 is a commercially available conventional arc-shaped elastic damping component. The two ends are fixedly connected to the mounting corner 71 and the surface of the T-shaped slide bar 74, respectively. It is the core energy-consuming component of the traction damping component 7. It absorbs and dissipates the lateral and torsional vibration energy of the inner oil tank 2 by its own elastic bending deformation, and is suitable for multi-dimensional vibration conditions. The T-shaped slide bar 74 is embedded in the cavity of the positioning slide groove 72. In the damping state, it is constrained by the groove body and remains stationary, providing a stable support end point for the arc-shaped damping plate 73 and ensuring stable vibration damping performance. In the disassembly state, the locking constraint is released by loosening the positioning set bolt, and the T-shaped slide bar 74 can slide in a directional straight line along the positioning slide groove 72 to realize the plug-in assembly of the inner oil tank 2 as a whole, which greatly reduces the difficulty of equipment assembly and maintenance.

[0030] like Figures 1 to 3As shown, the inner wall of the outer damping shell 3 is lined with sound-absorbing pads 8, which are located on the outer periphery of the inner oil tank 2. These pads absorb airborne noise radiated from the inner oil tank 2 and block the path of sound energy transmission. A reinforcing block 9 is fixedly connected between the baffle 65 and the outer wall of the inner oil tank 2. The reinforcing block 9 has a gusseted structure and is fixedly connected to both the side wall of the baffle 65 and the outer wall of the inner oil tank 2. This enhances the installation rigidity of the baffle 65 and prevents deformation and displacement of the baffle 65 when the secondary energy dissipation component 66 is working. Isolation guardrails 10 are fixedly connected to the upper and lower ends of the front and rear sides of the outer damping shell 3. These guardrails 10 surround the outer periphery of the radiator 52 to prevent... To protect the floating heat dissipation component 5 from external impacts, a U-shaped shock-absorbing pad 11 is embedded in the top opening edge of the outer shock-absorbing shell 3. The top surface of the U-shaped shock-absorbing pad 11 is in elastic contact with the mounting end face of the transformer body 1, which is used to buffer the vibration transmission between the transformer body 1 and the outer shock-absorbing shell 3, and avoid the rigid contact between the two to form an additional solid vibration transmission path. Rain covers 12 are fixedly installed on both sides of the outer wall of the outer shock-absorbing shell 3 at the positions corresponding to the fixing bolts 64. The rain covers 12 completely cover the exposed mounting area of ​​the fixing bolts 64, which is used to prevent rainwater from entering the bolt connection parts, prevent the fixing bolts 64 from rusting and loosening, and ensure the long-term installation stability of the honeycomb shock absorber 6.

[0031] Specifically, the sound-absorbing pad 8 is a commercially available porous sound-absorbing and sound-insulating pad, which is fixedly laid on the inner wall of the outer damping shell 3. It can effectively absorb some of the air noise radiated outward from the inner oil tank 2 and the secondary noise caused by structural vibration, further enhancing the overall sound insulation and noise reduction effect of the transformer. The reinforcing block 9 is a commercially available standard angular reinforcing rib component, which is fixedly connected between the side of the baffle 65 and the outer wall of the inner oil tank 2. It is used to reinforce the rigidity of the installation structure of the baffle 65, prevent the baffle 65 from deforming and shifting due to the reaction force of the damper 661, ensure the stable transmission of the top pushing force of the secondary energy dissipation component 66, and improve the working reliability of the linkage energy dissipation. The isolation guardrail 10 is a commercially available standard frame-type guardrail, which is fixedly installed on the outer side of the radiator 5 of the outer damping shell 3. The surrounding area of ​​2 forms a physical protective barrier for the floating radiator 52, preventing external collisions and impacts from foreign objects from causing deformation and failure of the suspension structure; the U-shaped shock-absorbing pad 11 is a commercially available U-shaped elastic shock-absorbing pad, which is embedded in the connection gap between the top of the outer shock-absorbing shell 3 and the transformer body 1, which can buffer the vibration impact between the two, avoid rigid contact to form an additional solid vibration transmission path, and at the same time compensate for assembly tolerances and suppress abnormal noise caused by local vibration; the rain cover 12 is a commercially available standard equipment protective cover, which is fixedly installed on both sides of the outer wall of the outer shock-absorbing shell 3, completely covering the exposed installation parts of the fixing bolts 64, preventing the fasteners from rusting and loosening, ensuring the installation stability of the honeycomb shock-absorbing component 6, and improving the long-term service life of the equipment in the outdoor environment.

[0032] The working principle and usage process of this invention: When the transformer is put into operation, the vibration generated by the transformer body 1 is transmitted to the inner oil tank 2. The longitudinal and multi-directional composite vibrations first act on the honeycomb damping component 6 between the inner oil tank 2 and the outer damping shell 3 through the mounting plate 63. The honeycomb skeleton 61, in conjunction with the internal viscoelastic damper 62, generates compression and shear composite deformation to dissipate the main vibration energy. At the same time, the deformation displacement of the honeycomb skeleton 61 pushes the push block 663 and the vertical plate 662 to reciprocate synchronously, causing the output end of the damper 661 on the baffle 65 to extend and retract, realizing secondary additional energy dissipation and enhancing the attenuation effect of non-longitudinal vibrations. The lateral oscillation and torsional vibrations at the four corners of the inner oil tank 2 are transmitted to the arc through the mounting corner 71. The arc-shaped damping pad 73 relies on the elastic bending deformation of the arc-shaped damping pad 73 to supplement and dissipate lateral vibration energy. During the damping process, the T-shaped slide bar 74 in the positioning slide groove 72 remains stationary to provide stable support. In the heat dissipation circuit, the corrugated flange 51 compensates for relative displacement with flexible deformation and blocks the rigid transmission of vibration in the oil circuit. The disc spring group 54 provides elastic suspension support for the radiator 52 to attenuate longitudinal vibration. The multi-directional swing of the radiator 52 synchronously drives the support plate 562 and the T-shaped block 563 to move, pulling the bottom viscous damper 565 to extend and retract to dissipate energy and limit the maximum displacement to avoid the risk of detachment. In conjunction with the sound-absorbing pad 8 in the outer damping shell 3, it absorbs radiated noise and achieves multi-dimensional wide-frequency vibration reduction and noise reduction and long-term stable operation.

[0033] The preferred embodiments of the present invention disclosed above are merely illustrative of the invention. These preferred embodiments do not exhaustively describe all details, nor do they limit the invention to any specific implementation. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of the invention, thereby enabling those skilled in the art to better understand and utilize the invention. The invention is limited only by the claims and their full scope and equivalents.

Claims

1. A low-noise vibration-damping transformer, comprising a transformer body (1), wherein an inner oil tank (2) is fixedly connected to the bottom of the transformer body (1), and an outer vibration-damping shell (3) is sleeved on the outer side, and a vibration-damping gap is provided between the inner oil tank (2) and the outer vibration-damping shell (3), and bases (4) are fixedly installed on both sides of the bottom of the outer vibration-damping shell (3), and floating heat dissipation components (5) are installed on the front and rear sides of the outer vibration-damping shell (3), characterized in that, Also includes: The honeycomb shock absorber (6) is installed inside the outer shock absorber shell (3) and is used to absorb and reduce the vibration generated by the operation of the transformer body (1). The honeycomb damper (6) includes a honeycomb skeleton (61) arranged around the top and bottom of the inner cavity of the outer damping shell (3). The honeycomb skeleton (61) is filled with viscoelastic damping (62). The surface of the inner oil tank (2) and the inner wall of the outer damping shell (3) are both fixedly connected to the mounting plate (63). The surface of the mounting plate (63) is fixedly connected to the surface of the honeycomb skeleton (61). The surface of the outer damping shell (3) is provided with fixing bolts (64). The fixing bolts (64) pass through the outer damping shell (3) and are threaded to the mounting plate (63). The top and bottom of the honeycomb skeleton (61) are both provided with baffles (65). The surface of the baffles (65) is fixedly connected to the surface of the inner oil tank (2). The surface of the baffles (65) is installed with secondary energy dissipation components (66). Traction damping component (7) is installed around the inside of the outer damping shell (3) to provide auxiliary damping for the inner oil tank (2).

2. The low-noise, vibration-damping transformer according to claim 1, characterized in that: The floating heat dissipation assembly (5) includes a corrugated flange (51) fixedly installed on the front and rear sides of the outer shock-absorbing shell (3). The side of the corrugated flange (51) near the inner oil tank (2) passes through the outer shock-absorbing shell (3) and is connected to the surface of the inner oil tank (2). A radiator (52) is provided on both the front and rear sides of the outer shock-absorbing shell (3). The side of the corrugated flange (51) away from the outer shock-absorbing shell (3) is connected to the radiator (52). A mounting plate (53) is fixedly installed on the surface of the radiator (52). Disc spring groups (54) are fixedly installed on both sides of the top of the mounting plate (53). A connecting plate (55) is fixedly installed on the top of the disc spring groups (54). The surface of the connecting plate (55) is fixedly installed on the surface of the transformer body (1). An anti-detachment shock-absorbing assembly (56) is installed on the surface of the radiator (52).

3. A low-noise, vibration-damping transformer according to claim 2, characterized in that: The anti-detachment and shock absorption assembly (56) includes a bearing plate (561) fixedly installed on the front and rear sides of the inner side of the base (4). A support plate (562) is fixedly installed on the surface of the radiator (52). A T-block (563) is fixedly installed on the bottom of the support plate (562). A round sleeve (564) is hinged to the front and rear sides of the T-block (563) through a shaft pin. A viscous damper (565) is fixedly installed on the surface of the round sleeve (564). The bottom of the viscous damper (565) is hinged to the top of the bearing plate (561) through a connecting block, a ball joint seat and a shaft pin.

4. A low-noise, vibration-damping transformer according to claim 1, characterized in that: The secondary energy dissipation component (66) includes a damper (661) fixedly installed on the surface of the baffle (65). The damper (661) is a displacement damper with a built-in return spring. A vertical plate (662) is fixedly installed at the output end of the damper (661). A push block (663) is fixedly installed on the surface of the vertical plate (662). Under the elastic tension of the built-in return spring, the end face of the push block (663) is always pressed against the surface of the honeycomb skeleton (61) to accurately support the reciprocating displacement of the honeycomb skeleton (61) during multi-directional deformation.

5. A low-noise, vibration-damping transformer according to claim 1, characterized in that: The traction damping component (7) includes mounting corner brackets (71) fixedly installed at the four corners of the inner oil tank (2). The four corners of the inner cavity of the outer damping shell (3) are fixedly installed with positioning grooves (72). The surface of the mounting corner brackets (71) is fixedly connected with arc-shaped damping pads (73). The inside of the positioning grooves (72) is connected with T-shaped slide bars (74). The arc-shaped damping pads (73) are fixedly installed on the surface of the T-shaped slide bars (74).

6. A low-noise, vibration-damping transformer according to claim 1, characterized in that: The inner wall of the outer shock-absorbing shell (3) is covered with a sound-absorbing pad (8). The sound-absorbing pad (8) is located on the outer periphery of the inner oil tank (2) to absorb the air noise radiated outward from the inner oil tank (2) and block the path of sound energy transmission outward.

7. A low-noise, vibration-damping transformer according to claim 1, characterized in that: A reinforcing block (9) is fixedly connected between the baffle (65) and the outer wall of the inner oil tank (2). The reinforcing block (9) is a gusseted structure and is fixedly connected to the side wall of the baffle (65) and the outer wall of the inner oil tank (2) respectively. It is used to enhance the installation rigidity of the baffle (65) and prevent the baffle (65) from deforming and shifting under force when the secondary energy dissipation component (66) is working.

8. A low-noise, vibration-damping transformer according to claim 2, characterized in that: The upper and lower ends of the front and rear sides of the outer shock-absorbing shell (3) are fixedly connected with isolation guardrails (10). The isolation guardrails (10) surround the outer periphery of the radiator (52) to protect the floating heat dissipation component (5) from external impact.

9. A low-noise, vibration-damping transformer according to claim 1, characterized in that: The top opening edge of the outer shock-absorbing shell (3) is fitted with a U-shaped shock-absorbing pad (11). The top surface of the U-shaped shock-absorbing pad (11) is in elastic contact with the mounting end face of the transformer body (1) to buffer the vibration transmission between the transformer body (1) and the outer shock-absorbing shell (3) and avoid the two from forming an additional solid vibration transmission path through rigid contact.

10. A low-noise, vibration-damping transformer according to claim 1, characterized in that: Rain covers (12) are fixedly installed on both sides of the outer wall of the outer shock absorber shell (3) at the positions corresponding to the fixing bolts (64). The rain covers (12) completely cover the exposed installation area of ​​the fixing bolts (64) to prevent rainwater from entering the bolt connection, prevent the fixing bolts (64) from rusting and loosening, and ensure the long-term installation stability of the honeycomb shock absorber (6).

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